Some standard content:
2C5_13.140
National Standard of the People's Republic of China
GB 16710.11996
GB/T 16710.2~-16710.51996
Earth-moving machinery Noise limits and determination mcasurcments1996-12-23 issued
State Administration of Technical Supervision
199707-01 implementation
GE11671L.2-1996
Under the general standard "Engineering Noise Limit and Determination", it includes three standards, which can be divided into two parts in terms of technology. The first part is GB1F3.6.1. It gives the value of noise recovery of the following type of machine. The second part is B/1671C.2-~16710.E, which specifically gives the method of determining the noise level of the machine under the demonstration test case and the test conditions, and the method of determining the external noise level at the driver's position. This standard group provides a complete series of standards for the determination of the noise limit of industrial machinery, but the determination method can be divided into two parts in terms of technology. The first part is GB1G32. The determination of the noise level of industrial machinery in the fixed position test conditions is as follows: 1S? Acoustics: The external noise emission of mechanical machines is still equivalent to a certain number of laboratory tests. Therefore, it has been carefully tested by the French car case. It is due to the fact that the measurement principle and method are not more in line with the version (first edition) S6193:13. In terms of marketing and format, they are coordinated as a standard. There are 63 states that have recorded it. Therefore, this standard has not been issued since the date of entry into force. The second production standard is the "age examination qualification shake" recorded in the market. Therefore, there is no indication of the date of entry into force of this standard. The second production standard is the I574-2-345 second process machine sound measurement method. This standard is a standard for the recorder. This standard is not issued by the Ministry of Industry and Information Technology of the People's Republic of China. This standard is drafted by the China Magnetic Industry Engineering Research Institute. The main beneficiaries of this standard are: Sheng Zonghou, Tcheng, Jiao Fei, Guan Run, Lin Gou, Xin Yin
National Standard of the People's Republic of China
Determination of external radiated noise of machine under earth-morlng machineryStatlonary tesi This standard is a special test specification for equipment type GB/T1671D.2-1996
This standard specifies the specific methods to determine the sound rate and emission under test conditions in a repeatable working environment. The test method is to determine the value of the product to be retained by the company for each basic component (product, connection, etc.), and it can also be used for actual evaluation. Determine the T in the city to determine the equivalent connection A special test for the heat core, see B/T167:0.3T particle machine case training test conditions The following are the test conditions for the following types of machines: hydraulic type and ball type towing machine, Section and wheel type:
Take the belt type to the wheel type installation type
a pregnant fear I expand.
2 Angle standard
The following standard contains the parent text, through the female standard reference surface called this standard marked the system text, this standard version for the horse, the stock female shown are in effect, so other standards are read and agreed, so that the parties to this standard should explore the use of the following standard service new effect this flash can be huge. GT3785-83 Qing-level design 1, rain-level general test method G8199871 method planning mechanical technology
G/1e?. J.3-1! ! rT engineering machine ruling test system can be determined under the position of the machine throat G civil / 1670. - 1996 engineering machine worry about the dynamic test change recording machine ~ oh determination (B167.9.3190 under the dynamic test conditions can be measured under the position of the machine noise G3/1376? 1396 acoustics sound method Europe to determine the sound power level of the source - near the self-field above the reflecting surface engineering method IS5, reverse road vehicle 4 machine test specification - net edge rate Guohao Technical Supervision Bureau 1996-12-23 approved 1937-07-5 implementation || tt || IEC O: 9R average sound level meter
3 Terminology
GB/6710.21996
This standard adopts the following definitions and the terms given in CB848, (B/T3767 3.7 Equivalent A-weighted sound level Lc.
The A-weighted sound level averaged over the entire rotation time. 3.2 Weighted power Lwa
The A-weighted sound level is obtained by averaging the equivalent continuous A-level on the full energy measurement and averaging the single power over the entire rotation time.
3.3 Excavator
The upper mechanism of the machine can rotate 360*, and the upper mechanism, bucket arm, and movable lowering components of the machine can be used to dig, lift, return and light belt or wheel self-propelled machine. During the excavation operation, the lower part of the card expansion is fixed and unchanged during the working cycle of the excavation to the interruption rate. Figure 1: 1. 3.4. 3.5. 3.6. 3.6. 3.7. 3.8. 3.9. 4.10. 4.11. 4.12. 4.13. 4.14. 4.15. 4.16. 4.17. 4.18. 4.19. 4.20. 4.21. 4.22. 4.23. 4.24. 4.25. 4.26. 4.27. 4.28. 4.29. 4.30. 4.31. 4.32. 4.33. 4.34. 4.35. 4.36. 4.37. 4.38. 4.39. 4.40. 4.41. 4.42. 4.43. 4.44. 4.45. 4.46. 4.47. 4.48. 4.49. 4.50. 4.51. 4.52. 4.53. 4.54. 4.55. 4.56. 4.57. 4.58. 4.59. 4.60. 4.61. 4.62. 4.63. 4.64. 4.65. 4.66. 4.67. 4.68. 4.69. 4.70. 4.71. 4.72. 4.73. 4.74. 4.75. 4.76. 4.77. 4.78. 4.79. 4.80. 4.81. 4.82. 4.83. As an excavator, the pressure is restored by using the reverse bucket at ground level! To control the direction of the earthwork machine, this will cause the heat to rise. When the bucket rotates to make materials, the main machine is fixed. When used as a loader, the shovel, load, transport and season materials by lifting the machine forward and flipping and lifting the bull. The instrument must be able to pass through the air. 1 The required visual weight, integral translation level - should meet the requirements of TFC8(14 for "only". The optional instrument includes the selected transmitter and cable, which meets the requirements of G3755 for type 1 only. In order to reduce the possible directionality difference, an omnidirectional transmitter should be used for measurement: the microphone and its corresponding electric contraction should be selected. The temperature change range during the rapid rise measurement is out so that its comprehensive recording sensitivity will not change significantly, 5 test cycles
5. 1 General
Environmental requirements are in accordance with Chapter 4 and Appendix A of GB/3767-1096, and the water level requirements are in the range of 4.2~-5.3. The temperature, air flow, air pressure, vibration and effective protection field are within the range specified by the instrument manufacturer. 5.2 Test site and environmental correction value <
The test site's measurement ground is sea soil or sand with low hard reflection (5.3.1 and 5.3.2), and there is no sound reflection within the range of one times the radius from the center of the sound source to the measuring point (the measurement half surface radius is the highest). The environmental correction value can be considered to be less than 0.5, and the internal surface can be ignored.
For the main 5.3.1c all-sand test ground, the environmental correction value 5 should be determined and used for the calculation of the rated power. 5.3 Test site
5.3. 1 General description
The measurement surface of the test site specified in 5.3.2-5.A.4 can be used: 1) Convenient surface (concrete or concrete surface); 2) Composite surface of reflective surface and sand; 3) Sand surface, the reflective surface can be used as a test surface: all operating conditions:
control plan: all operating conditions;
a belt loader, the system operation three conditions of the pump reflective surface and sand composite surface using crawler tractors and crawler loaders to carry out the operation of the machine on the sand surface, the microphone is arranged on the limited reflection surface. The test surface can be used for the driving of mobile tractors and belt loaders and the operation of certain wave systems. As long as it can be fully,
CB/T 16710.2—1996
According to Appendix A of GR/T3747—1S66, the correction value K is less than 0.5B and greater than 0.5. It is corrected in the calculation of sound power level. 5.3.2 Anti-annual surface measurement 5.3.1) 1
The sound transmission test is conducted in the concrete or sand layer. 5.3.3 The ground measurement includes the name of the ground and the sand layer. 5.3.1) The machine is traveling to find a small sand layer with a diameter less than mm. The depth is 0.3m. The depth can be appropriately increased. The ground between the microphone and the microphone should be the same as the 3.2 wind radiation. This provides a wide range of sound transmission measurement environments: the minimum size of the small complex platform can only be used when there is a hard surface on each side of the moving path. The machine has traveled twice. For each of the three sound transmission measurement points, they are located on both sides of the machine. The same method can also be used to complete the above situation. 5.3.4 Ground measurement The ground pressure should be relatively high. 5.4 The noise recorded at each activity point should be at least 10% lower than the radial sound increase. 5.5 In the event of rain, sleet, ice or other weather conditions, the ground value should not be exceeded. 5.6 All signal equipment should be equipped with a routine alarm, such as the alarm of the vehicle before the test. 6 Measurement of equivalent continuous A sound level
6.1 The test surface is a hemisphere, and the radius of the machine is shown in Figures 1 to 4: The length of the earthmoving vehicle is only the main cut part, including the loaders (seating machine, bucket, and other packages). The length of the half-single is:
4, when the tester is less than 1.5m
the tester is less than 1.5m
1F Xiqi test machine soil body length is greater than 4. 6.? The transmitter on the ball measurement room should be placed in the UK month 5 measurement, the position of the microphone and the standard straight line are also shown in Figure 5 Table 1. Length 1 transmitter real these coordinate values
6.3 Positioning of the machine
6.3.1 Loaders and bulldozers
GB/I 16710.2-1996
r—学国兰
South 5 hemisphere. Microphones on the machine should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The center of the machine body (see Figure 2 and Figure 3) is defined as the center point for positioning the machine. 6 3.2 The center of the excavator should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The rotation center of the excavator (see Figure 1) is defined as the center point for positioning the machine, 6. 4 Measurement time
Under stable operation, the measurement time of each reading at each measuring point should be within the range of 1~31:. The configuration and operation of the machine
A (standard)
Before each reading of a set of parameters, the engine should be in a low-speed idling state, and then the engine should reach the new set speed specified by the manufacturer under stable no-load conditions.
8 Acoustic measurement
B.1 The instrument only
Collect the data and calculate the average value of the instrument. It should meet the requirements of IEC 6004-4 for type 4 instruments. Equivalent continuous A level. Unit R, can be obtained by the formula (:
In practice: T-measurement time, that is, the machine running time during the test cycle: P ()-time of the sound signal A calibration sound pressure
Reference sound pressure (20 μP):
Gn/F 15710.2—1996
Or, adopt the numerical integration of formula: 2) to obtain: tram. = 3u Ig
Where: 10
The time of the system accounts for a percentage of the entire measurement time limit, the interval band is 1B or small:
A sound level should comply with the safety E3?5 cost standard "type measurement layer solution measurement, only the time of the device is subject to the "increase" block B.2 Number of measurements
At each microphone measurement point, three measurements are determined. In order to meet the requirements in 9.3, additional measurements may be required. 9 Use the average equivalent continuous sound level on the measurement surface to calculate the weighted power level 9 Calculate the average equivalent continuous A sound level on the measurement surface a The average equivalent continuous A sound level on the measurement surface should be calculated by the dB reference sound 20a The equivalent continuous A production level value is calculated by the formula (31):
=1C IeN4
[1F10*
Where: Lmn.-
The continuous sound level measured from the first microphone measuring point, the total number of microphone measuring points is calculated by K (2uPE). bZxz.net
9.2A Design Power Level Calculation
A Design Sound Efficiency Level of the Array I~. Single dB, Shan formula (1) Lwx = Lrn,T - K - 10 lg %
Where: One-dimensional surface area, unit m, for hemispherical surface S=; S, -lr*:
Liu at r=4 ㎡.
10 1gs
r=:6 m,
environmental positive value, unit dB (2 new B/T3767-19 divided by A) 93 Determination of the measurement results
The three groups of sound level values provided by each sound device must be within 1dB of the difference between the three values (see 82). If two of the three values are not satisfied, additional tests are required. The average of the two values with a difference within 1dB is used as the A-weighted sound power value: If there is no pair of sound power level calculation values that meet the above requirements, the arithmetic mean of the two pairs of numbers is taken as the limit value.
10 Record all tests conducted according to this standard. The following contents should be recorded. 10.1 Test machine
a) Machine make
h) Machine type
) Machine number;
d) Machine accessories, including main equipment and manufacturing! The rated speed of the engine at rated torque must be 1c when the rated speed is exceeded according to ISO1585. 10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and the test site measurement ground type including the machine position diagram: 1) The test site atmosphere, air pressure, relative humidity and wind speed. 10.3 Instruments
a) Name of the instrument used for measurement. Type and number of the instrument: 1) Calibration method of the instrument system;
e) Calibration period and quick notes of the acoustic calibrator instrument system. 10.4 Acoustic data
a) Location of the acoustic calibrator:
1 Connect to Section 8 to require the efficiency of each measurement point at each level A level c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
A7 safety and operation
GB/116710. 2-:996
Appendix A
(Standard Record:
Configuration and operation of the machine
During the test, the relevant standard safety regulations and the manufacturer's operating instructions shall be observed. A2 Configuration of the machine
The machine is equipped with standard working equipment (bucket, bulldozer, etc.) as specified by the manufacturer. The fuel tank is filled with no more than half of the full fuel. The fuel tank is filled with fuel within the specified range during production. The machine is placed on the test track. The cutting edge of the excavator or loaded bucket or bulldozer is placed 30mm50m wide from the ground. If the height is less than 250m, the maximum height is exceeded. 44 (excluding disassembly) or the cutting edge of the plate: excluding active teeth) The plane formed by the shape must be parallel to the resistance surface (operation position). A3 The operation of the machine
The function is stationary and the brake is used to stop. The engine is running at the rated speed specified by the manufacturer under no-load conditions. This is the speed at which the engine outputs 150-1535 rpm. The transmission is in neutral position: All working positions are not in motion: The surrounding environment has reached the specified upper limit. Do not collect the test data before the transmission reaches the specified upper limit. During the system inspection process, the driver should ensure that the machine is running properly.2 The wind radiation is too strong, which provides a wide range of sound transmission measurement environment: the minimum size of the small complex platform can only be used when there is a hard reflection on each moving road. The machine has traveled twice before. For each of the three sound transmission measurement points, they are located on both sides of the machine. The same method can also be used for the above conditions. 5.3.4 Ground measurement 5.3 The ground pressure is relatively high. 3.4 The noise recorded at each activity point is at least 10% lower than the radial increase of the sound. 5.5 The three weather conditions are accompanied by rain, rain, ice, and ground value. The test should not be performed. 5.6 All signals are equipped with management, such as the alarm system of the vehicle before the alarm must be a routine vehicle alarm. During the test, the six companies 6 Measurement of equivalent continuous A sound level
6.1 The test surface is a hemisphere, and the radius of the machine is shown in Figures 1 to 4: The length of the earthmoving vehicle is only the main cut part, including the loaders (seating machine, bucket, and other packages). The length of the half-single is:
4, when the tester is less than 1.5m
the tester is less than 1.5m
1F Xiqi test machine soil body length is greater than 4. 6.? The transmitter on the ball measurement room should be placed in the UK month 5 measurement, the position of the microphone and the standard straight line are also shown in Figure 5 Table 1. Length 1 transmitter real these coordinate values
6.3 Positioning of the machine
6.3.1 Loaders and bulldozers
GB/I 16710.2-1996
r—学国兰
South 5 hemisphere. Microphones on the machine should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The center of the machine body (see Figure 2 and Figure 3) is defined as the center point for positioning the machine. 6 3.2 The center of the excavator should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The rotation center of the excavator (see Figure 1) is defined as the center point for positioning the machine, 6. 4 Measurement time
Under stable operation, the measurement time of each reading at each measuring point should be within the range of 1~31:. The configuration and operation of the machine
A (standard)
Before each reading of a set of parameters, the engine should be in a low-speed idling state, and then the engine should reach the new set speed specified by the manufacturer under stable no-load conditions.
8 Acoustic measurement
B.1 The instrument only
Collect the data and calculate the average value of the instrument. It should meet the requirements of IEC 6004-4 for type 4 instruments. Equivalent continuous A level. Unit R, can be obtained by the formula (:
In practice: T-measurement time, that is, the machine running time during the test cycle: P ()-time of the sound signal A calibration sound pressure
Reference sound pressure (20 μP):
Gn/F 15710.2—1996
Or, adopt the numerical integration of formula: 2) to obtain: tram. = 3u Ig
Where: 10
The time of the system accounts for a percentage of the entire measurement time limit, the interval band is 1B or small:
A sound level should comply with the safety E3?5 cost standard "type measurement layer solution measurement, only the time of the device is subject to the "increase" block B.2 Number of measurements
At each microphone measurement point, three measurements are determined. In order to meet the requirements in 9.3, additional measurements may be required. 9 Use the average equivalent continuous sound level on the measurement surface to calculate the weighted power level 9 Calculate the average equivalent continuous A sound level on the measurement surface a The average equivalent continuous A sound level on the measurement surface should be calculated by the dB reference sound 20a The equivalent continuous A production level value is calculated by the formula (31):
=1C IeN4
[1F10*
Where: Lmn.-
The continuous sound level measured from the first microphone measuring point, the total number of microphone measuring points is calculated by K (2uPE).
9.2A Design Power Level Calculation
A Design Sound Efficiency Level of the Array I~. Single dB, Shan formula (1) Lwx = Lrn,T - K - 10 lg %
Where: One-dimensional surface area, unit m, for hemispherical surface S=; S, -lr*:
Liu at r=4 ㎡.
10 1gs
r=:6 m,
environmental positive value, unit dB (2 new B/T3767-19 divided by A) 93 Determination of the measurement results
The three groups of sound level values provided by each sound device must be within 1dB of the difference between the three values (see 82). If two of the three values are not satisfied, additional tests are required. The average of the two values with a difference within 1dB is used as the A-weighted sound power value: If there is no pair of sound power level calculation values that meet the above requirements, the arithmetic mean of the two pairs of numbers is taken as the limit value.
10 Record all tests conducted according to this standard. The following contents should be recorded. 10.1 Test machine
a) Machine make
h) Machine type
) Machine number;
d) Machine accessories, including main equipment and manufacturing! The rated speed of the engine at rated torque must be 1c when the rated speed is exceeded according to ISO1585. 10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and the test site measurement ground type including the machine position diagram: 1) The test site atmosphere, air pressure, relative humidity and wind speed. 10.3 Instruments
a) Name of the instrument used for measurement. Type and number of the instrument: 1) Calibration method of the instrument system;
e) Calibration period and quick notes of the acoustic calibrator instrument system. 10.4 Acoustic data
a) Location of the acoustic calibrator:
1 Connect to Section 8 to require the efficiency of each measurement point at each level A level c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
A7 safety and operation
GB/116710. 2-:996
Appendix A
(Standard Record:
Configuration and operation of the machine
During the test, the relevant standard safety regulations and the manufacturer's operating instructions shall be observed. A2 Configuration of the machine
The machine is equipped with standard working equipment (bucket, bulldozer, etc.) as specified by the manufacturer. The fuel tank is filled with no more than half of the full fuel. The fuel tank is filled with fuel within the specified range during production. The machine is placed on the test track. The cutting edge of the excavator or loaded bucket or bulldozer is placed 30mm50m wide from the ground. If the height is less than 250m, the maximum height is exceeded. 44 (excluding disassembly) or the cutting edge of the plate: excluding active teeth) The plane formed by the shape must be parallel to the resistance surface (operation position). A3 The operation of the machine
The function is stationary and the brake is used to stop. The engine is running at the rated speed specified by the manufacturer under no-load conditions. This is the speed at which the engine outputs 150-1535 rpm. The transmission is in neutral position: All working positions are not in motion: The surrounding environment has reached the specified upper limit. Do not collect the test data before the transmission reaches the specified upper limit. During the system inspection process, the driver should ensure that the machine is running properly.2 The wind radiation is too strong, which provides a wide range of sound transmission measurement environment: the minimum size of the small complex platform can only be used when there is a hard reflection on each moving road. The machine has traveled twice before. For each of the three sound transmission measurement points, they are located on both sides of the machine. The same method can also be used for the above conditions. 5.3.4 Ground measurement 5.3 The ground pressure is relatively high. 3.4 The noise recorded at each activity point is at least 10% lower than the radial increase of the sound. 5.5 The three weather conditions are accompanied by rain, rain, ice, and ground value. The test should not be performed. 5.6 All signals are equipped with management, such as the alarm system of the vehicle before the alarm must be a routine vehicle alarm. During the test, the six companies 6 Measurement of equivalent continuous A sound level
6.1 The test surface is a hemisphere, and the radius of the machine is shown in Figures 1 to 4: The length of the earthmoving vehicle is only the main cut part, including the loaders (seating machine, bucket, and other packages). The length of the half-single is:
4, when the tester is less than 1.5m
the tester is less than 1.5m
1F Xiqi test machine soil body length is greater than 4. 6.? The transmitter on the ball measurement room should be placed in the UK month 5 measurement, the position of the microphone and the standard straight line are also shown in Figure 5 Table 1. Length 1 transmitter real these coordinate values
6.3 Positioning of the machine
6.3.1 Loaders and bulldozers
GB/I 16710.2-1996
r—学国兰
South 5 hemisphere. Microphones on the machine should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The center of the machine body (see Figure 2 and Figure 3) is defined as the center point for positioning the machine. 6 3.2 The center of the excavator should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The rotation center of the excavator (see Figure 1) is defined as the center point for positioning the machine, 6. 4 Measurement time
Under stable operation, the measurement time of each reading at each measuring point should be within the range of 1~31:. The configuration and operation of the machine
A (standard)
Before each reading of a set of parameters, the engine should be in a low-speed idling state, and then the engine should reach the new set speed specified by the manufacturer under stable no-load conditions.
8 Acoustic measurement
B.1 The instrument only
Collect the data and calculate the average value of the instrument. It should meet the requirements of IEC 6004-4 for type 4 instruments. Equivalent continuous A level. Unit R, can be obtained by the formula (:
In practice: T-measurement time, that is, the machine running time during the test cycle: P ()-time of the sound signal A calibration sound pressure
Reference sound pressure (20 μP):
Gn/F 15710.2—1996
Or, adopt the numerical integration of formula: 2) to obtain: tram. = 3u Ig
Where: 10
The time of the system accounts for a percentage of the entire measurement time limit, the interval band is 1B or small:
A sound level should comply with the safety E3?5 cost standard "type measurement layer solution measurement, only the time of the device is subject to the "increase" block B.2 Number of measurements
At each microphone measurement point, three measurements are determined. In order to meet the requirements in 9.3, additional measurements may be required. 9 Use the average equivalent continuous sound level on the measurement surface to calculate the weighted power level 9 Calculate the average equivalent continuous A sound level on the measurement surface a The average equivalent continuous A sound level on the measurement surface should be calculated by the dB reference sound 20a The equivalent continuous A production level value is calculated by the formula (31):
=1C IeN4
[1F10*
Where: Lmn.-
The continuous sound level measured from the first microphone measuring point, the total number of microphone measuring points is calculated by K (2uPE).
9.2A Design Power Level Calculation
A Design Sound Efficiency Level of the Array I~. Single dB, Shan formula (1) Lwx = Lrn,T - K - 10 lg %
Where: One-dimensional surface area, unit m, for hemispherical surface S=; S, -lr*:
Liu at r=4 ㎡.
10 1gs
r=:6 m,
environmental positive value, unit dB (2 new B/T3767-19 divided by A) 93 Determination of the measurement results
The three groups of sound level values provided by each sound device must be within 1dB of the difference between the three values (see 82). If two of the three values are not satisfied, additional tests are required. The average of the two values with a difference within 1dB is used as the A-weighted sound power value: If there is no pair of sound power level calculation values that meet the above requirements, the arithmetic mean of the two pairs of numbers is taken as the limit value.
10 Record all tests conducted according to this standard. The following contents should be recorded. 10.1 Test machine
a) Machine make
h) Machine type
) Machine number;
d) Machine accessories, including main equipment and manufacturing! The rated speed of the engine at rated torque must be 1c when the rated speed is exceeded according to ISO1585. 10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and the test site measurement ground type including the machine position diagram: 1) The test site atmosphere, air pressure, relative humidity and wind speed. 10.3 Instruments
a) Name of the instrument used for measurement. Type and number of the instrument: 1) Calibration method of the instrument system;
e) Calibration period and quick notes of the acoustic calibrator instrument system. 10.4 Acoustic data
a) Location of the acoustic calibrator:
1 Connect to Section 8 to require the efficiency of each measurement point at each level A level c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
A7 safety and operation
GB/116710. 2-:996
Appendix A
(Standard Record:
Configuration and operation of the machine
During the test, the relevant standard safety regulations and the manufacturer's operating instructions shall be observed. A2 Configuration of the machine
The machine is equipped with standard working equipment (bucket, bulldozer, etc.) as specified by the manufacturer. The fuel tank is filled with no more than half of the full fuel. The fuel tank is filled with fuel within the specified range during production. The machine is placed on the test track. The cutting edge of the excavator or loaded bucket or bulldozer is placed 30mm50m wide from the ground. If the height is less than 250m, the maximum height is exceeded. 44 (excluding disassembly) or the cutting edge of the plate: excluding active teeth) The plane formed by the shape must be parallel to the resistance surface (operation position). A3 The operation of the machine
The function is stationary and the brake is used to stop. The engine is running at the rated speed specified by the manufacturer under no-load conditions. This is the speed at which the engine outputs 150-1535 rpm. The transmission is in neutral position: All working positions are not in motion: The surrounding environment has reached the specified upper limit. Do not collect the test data before the transmission reaches the specified upper limit. During the system inspection process, the driver should ensure that the machine is running properly.1 square foot
The test surface is a hemisphere, and the radius of the machine is shown in Figure 1-Figure 4: The length of the earthmoving machine is only considered, including the main cutting part (the loaders (the seat of the earthmoving machine, the bucket, the effect unit, etc.). The length of the half-single is:
4, when the tester is less than 1.5m
the tester is less than 1.5m
1F Xiqi test machine soil length is greater than 4. 6.? The transmitter on the measuring room should be placed in the UK month 5 measurement, the position of the microphone and the standard straight wire are also shown in Figure 5 Table 1. Length 1 transmitter to achieve these coordinate values
6.3 Positioning of the machine
6.3.1 Loaders and bulldozers
GB/I 16710.2-1996
r—学国兰
South 5 hemisphere. Microphones on the machine should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The center of the machine body (see Figure 2 and Figure 3) is defined as the center point for positioning the machine. 6 3.2 The center of the excavator should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The rotation center of the excavator (see Figure 1) is defined as the center point for positioning the machine, 6. 4 Measurement time
Under stable operation, the measurement time of each reading at each measuring point should be within the range of 1~31:. The configuration and operation of the machine
A (standard)
Before each reading of a set of parameters, the engine should be in a low-speed idling state, and then the engine should reach the new set speed specified by the manufacturer under stable no-load conditions.
8 Acoustic measurement
B.1 The instrument only
Collect the data and calculate the average value of the instrument. It should meet the requirements of IEC 6004-4 for type 4 instruments. Equivalent continuous A level. Unit R, can be obtained by the formula (:
In practice: T-measurement time, that is, the machine running time during the test cycle: P ()-time of the sound signal A calibration sound pressure
Reference sound pressure (20 μP):
Gn/F 15710.2—1996
Or, adopt the numerical integration of formula: 2) to obtain: tram. = 3u Ig
Where: 10
The time of the system accounts for a percentage of the entire measurement time limit, the interval band is 1B or small:
A sound level should comply with the safety E3?5 cost standard "type measurement layer solution measurement, only the time of the device is subject to the "increase" block B.2 Number of measurements
At each microphone measurement point, three measurements are determined. In order to meet the requirements in 9.3, additional measurements may be required. 9 Use the average equivalent continuous sound level on the measurement surface to calculate the weighted power level 9 Calculate the average equivalent continuous A sound level on the measurement surface a The average equivalent continuous A sound level on the measurement surface should be calculated by the dB reference sound 20a The equivalent continuous A production level value is calculated by the formula (31):
=1C IeN4
[1F10*
Where: Lmn.-
The continuous sound level measured from the first microphone measuring point, the total number of microphone measuring points is calculated by K (2uPE).
9.2A Design Power Level Calculation
A Design Sound Efficiency Level of the Array I~. Single dB, Shan formula (1) Lwx = Lrn,T - K - 10 lg %
Where: One-dimensional surface area, unit m, for hemispherical surface S=; S, -lr*:
Liu at r=4 ㎡.
10 1gs
r=:6 m,
environmental positive value, unit dB (2 new B/T3767-19 divided by A) 93 Determination of the measurement results
The three groups of sound level values provided by each sound device must be within 1dB of the difference between the three values (see 82). If two of the three values are not satisfied, additional tests are required. The average of the two values with a difference within 1dB is used as the A-weighted sound power value: If there is no pair of sound power level calculation values that meet the above requirements, the arithmetic mean of the two pairs of numbers is taken as the limit value.
10 Record all tests conducted according to this standard. The following contents should be recorded. 10.1 Test machine
a) Machine make
h) Machine type
) Machine number;
d) Machine accessories, including main equipment and manufacturing! The rated speed of the engine at rated torque must be 1c when the rated speed is exceeded according to ISO1585. 10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and the test site measurement ground type including the machine position diagram: 1) The test site atmosphere, air pressure, relative humidity and wind speed. 10.3 Instruments
a) Name of the instrument used for measurement. Type and number of the instrument: 1) Calibration method of the instrument system;
e) Calibration period and quick notes of the acoustic calibrator instrument system. 10.4 Acoustic data
a) Location of the acoustic calibrator:
1 Connect to Section 8 to require the efficiency of each measurement point at each level A level c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
A7 safety and operation
GB/116710. 2-:996
Appendix A
(Standard Record:
Configuration and operation of the machine
During the test, the relevant standard safety regulations and the manufacturer's operating instructions shall be observed. A2 Configuration of the machine
The machine is equipped with standard working equipment (bucket, bulldozer, etc.) as specified by the manufacturer. The fuel tank is filled with no more than half of the full fuel. The fuel tank is filled with fuel within the specified range during production. The machine is placed on the test track. The cutting edge of the excavator or loaded bucket or bulldozer is placed 30mm50m wide from the ground. If the height is less than 250m, the maximum height is exceeded. 44 (excluding disassembly) or the cutting edge of the plate: excluding active teeth) The plane formed by the shape must be parallel to the resistance surface (operation position). A3 The operation of the machine
The function is stationary and the brake is used to stop. The engine is running at the rated speed specified by the manufacturer under no-load conditions. This is the speed at which the engine outputs 150-1535 rpm. The transmission is in neutral position: All working positions are not in motion: The surrounding environment has reached the specified upper limit. Do not collect the test data before the transmission reaches the specified upper limit. During the system inspection process, the driver should ensure that the machine is running properly.1 square foot
The test surface is a hemisphere, and the radius of the machine is shown in Figure 1-Figure 4: The length of the earthmoving machine is only considered, including the main cutting part (the loaders (the seat of the earthmoving machine, the bucket, the effect unit, etc.). The length of the half-single is:
4, when the tester is less than 1.5m
the tester is less than 1.5m
1F Xiqi test machine soil length is greater than 4. 6.? The transmitter on the measuring room should be placed in the UK month 5 measurement, the position of the microphone and the standard straight wire are also shown in Figure 5 Table 1. Length 1 transmitter to achieve these coordinate values
6.3 Positioning of the machine
6.3.1 Loaders and bulldozers
GB/I 16710.2-1996
r—学国兰
South 5 hemisphere. Microphones on the machine should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The center of the machine body (see Figure 2 and Figure 3) is defined as the center point for positioning the machine. 6 3.2 The center of the excavator should coincide with the center of the hemisphere (the intersection of the X-axis and the Y-axis in Figure 5), and the front of the machine should be microphones 1 and 4. The rotation center of the excavator (see Figure 1) is defined as the center point for positioning the machine, 6. 4 Measurement time
Under stable operation, the measurement time of each reading at each measuring point should be within the range of 1~31:. The configuration and operation of the machine
A (standard)
Before each reading of a set of parameters, the engine should be in a low-speed idling state, and then the engine should reach the new set speed specified by the manufacturer under stable no-load conditions.
8 Acoustic measurement
B.1 The instrument only
Collect the data and calculate the average value of the instrument. It should meet the requirements of IEC 6004-4 for type 4 instruments. Equivalent continuous A level. Unit R, can be obtained by the formula (:
In practice: T-measurement time, that is, the machine running time during the test cycle: P ()-time of the sound signal A calibration sound pressure
Reference sound pressure (20 μP):
Gn/F 15710.2—1996
Or, adopt the numerical integration of formula: 2) to obtain: tram. = 3u Ig
Where: 10
The time of the system accounts for a percentage of the entire measurement time limit, the interval band is 1B or small:
A sound level should comply with the safety E3?5 cost standard "type measurement layer solution measurement, only the time of the device is subject to the "increase" block B.2 Number of measurements
At each microphone measurement point, three measurements are determined. In order to meet the requirements in 9.3, additional measurements may be required. 9 Use the average equivalent continuous sound level on the measurement surface to calculate the weighted power level 9 Calculate the average equivalent continuous A sound level on the measurement surface a The average equivalent continuous A sound level on the measurement surface should be calculated by the dB reference sound 20a The equivalent continuous A production level value is calculated by the formula (31):
=1C IeN4
[1F10*
Where: Lmn.-
The continuous sound level measured from the first microphone measuring point, the total number of microphone measuring points is calculated by K (2uPE).
9.2A Design Power Level Calculation
A Design Sound Efficiency Level of the Array I~. Single dB, Shan formula (1) Lwx = Lrn,T - K - 10 lg %
Where: One-dimensional surface area, unit m, for hemispherical surface S=; S, -lr*:
Liu at r=4 ㎡.
10 1gs
r=:6 m,
environmental positive value, unit dB (2 new B/T3767-19 divided by A) 93 Determination of the measurement results
The three groups of sound level values provided by each sound device must be within 1dB of the difference between the three values (see 82). If two of the three values are not satisfied, additional tests are required. The average of the two values with a difference within 1dB is used as the A-weighted sound power value: If there is no pair of sound power level calculation values that meet the above requirements, the arithmetic mean of the two pairs of numbers is taken as the limit value.
10 Record all tests conducted according to this standard. The following contents should be recorded. 10.1 Test machine
a) Machine make
h) Machine type
) Machine number;
d) Machine accessories, including main equipment and manufacturing! The rated speed of the engine at rated torque must be 1c when the rated speed is exceeded according to ISO1585. 10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and the test site measurement ground type including the machine position diagram: 1) The test site atmosphere, air pressure, relative humidity and wind speed. 10.3 Instruments
a) Name of the instrument used for measurement. Type and number of the instrument: 1) Calibration method of the instrument system;
e) Calibration period and quick notes of the acoustic calibrator instrument system. 10.4 Acoustic data
a) Location of the acoustic calibrator:
1 Connect to Section 8 to require the efficiency of each measurement point at each level A level c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
A7 safety and operation
GB/116710. 2-:996
Appendix A
(Standard Record:
Configuration and operation of the machine
During the test, the relevant standard safety regulations and the manufacturer's operating instructions shall be observed. A2 Configuration of the machine
The machine is equipped with standard working equipment (bucket, bulldozer, etc.) as specified by the manufacturer. The fuel tank is filled with no more than half of the full fuel. The fuel tank is filled with fuel within the specified range during production. The machine is placed on the test track. The cutting edge of the excavator or loaded bucket or bulldozer is placed 30mm50m wide from the ground. If the height is less than 250m, the maximum height is exceeded. 44 (excluding disassembly) or the cutting edge of the plate: excluding active teeth) The plane formed by the shape must be parallel to the resistance surface (operation position). A3 The operation of the machine
The function is stationary and the brake is used to stop. The engine is running at the rated speed specified by the manufacturer under no-load conditions. This is the speed at which the engine outputs 150-1535 rpm. The transmission is in neutral position: All working positions are not in motion: The surrounding environment has reached the specified upper limit. Do not collect the test data before the transmission reaches the specified upper limit. During the system inspection process, the driver should ensure that the machine is running properly.4 Test time
Under stable operation, the measuring time of each reading at each measuring point should be within the range of 1~31:. Machine configuration and operation
A (standard)
Before reading a set of parameters each time, the engine should be in a low-speed idling state and then reach the new set speed under stable no-load state specified by the manufacturer.
8 Acoustic measurement
B.1 The data collected by the measuring instrument shall be integrated as an average value, which shall comply with the requirements of IEC 6004-4 for type 4 instruments. The equivalent continuous A level. Unit R can be obtained by formula (:
In practice: T - measurement time, that is, the approximate running time of the machine during the test: P () - calibration sound pressure of the sound signal
Reference sound pressure (20 μP):
Gn/F 15710.2—1996
Or, use formula: 2) to obtain the numerical integration: tram. = 3u Ig
Where: 10
The time of the system accounts for a percentage of the entire measurement time limit. The interval is 1B or heavy:
A The sound level should comply with the E3?5 standard "type measurement layer solution measurement, only the time of the device is subject to the "increase" block B.2 Number of measurements
At each microphone measurement point, three measurements are required. In order to meet the requirements in 9.3, additional measurements may be required. 9 Use the average equivalent continuous sound level on the measurement surface to calculate the weighted power level 9 Calculate the average equivalent continuous A sound level on the measurement surface The average equivalent continuous A sound level on the measurement surface should be calculated by the dB reference sound 20a equivalent continuous A production level value (31 calculation:
=1C IeN4
[1F10*
Where: Lmn.-
The continuous sound level measured from the first microphone measuring point, the total number of microphone measuring points is calculated by K (2uPE).
9.2A Design Power Level Calculation
A Design Sound Efficiency Level of the Array I~. Single dB, Shan formula (1) Lwx = Lrn,T - K - 10 lg %
Where: One-dimensional surface area, unit m, for hemispherical surface S=; S, -lr*:
Liu at r=4 ㎡.
10 1gs
r=:6 m,
environmental positive value, unit dB (2 new B/T3767-19 divided by A) 93 measurement results determination
must be provided by each speaker diffuse point to the three groups of storage level values (see 82 three borrowed two of the difference is within 1dB, not satisfied, need additional test, the difference between the two values within 1B calculated as the A-weighted sound power value: if there is less than a pair of sound power level calculation value to meet the above requirements, then the number of rounded. The arithmetic mean of the values shall be taken as the limit compensation.
10 Record all the tests conducted according to this standard. The following shall be recorded: 10.1 Test machine
a) Machine make
h) Machine type
) Machine number;
d) Machine configuration, including main components and make! The rated speed of the engine at rated torque at rated speed specified in ISO 1585 shall be 1c
10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and test site measurement ground type used, including diagram showing machine location: 1) Air pressure, humidity and wind speed of the test site. 10.3 Instruments
a) Name of the instrument, type and number of the instrument: 1) Calibration method of the instrument system;
e) Calibration period and points of the acoustic calibrator system. 10.4 Data
a) Location of the acoustic calibrator:
1 Connect to the 8th level and require the efficiency of each high-end measurement point to be Class A c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
A7 safety and operation
GB/116710. 2-:996
Appendix A
(Standard Record:
Configuration and operation of the machine
During the test, the relevant standard safety regulations and the manufacturer's operating instructions shall be observed. A2 Configuration of the machine
The machine is equipped with standard working equipment (bucket, bulldozer, etc.) as specified by the manufacturer. The fuel tank is filled with no more than half of the full fuel. The fuel tank is filled with fuel within the specified range during production. The machine is placed on the test track. The cutting edge of the excavator or loaded bucket or bulldozer is placed 30mm50m wide from the ground. If the height is less than 250m, the maximum height is exceeded. 44 (excluding disassembly) or the cutting edge of the plate: excluding active teeth) The plane formed by the shape must be parallel to the resistance surface (operation position). A3 The operation of the machine
The function is stationary and the brake is used to stop. The engine is running at the rated speed specified by the manufacturer under no-load conditions. This is the speed at which the engine outputs 150-1535 rpm. The transmission is in neutral position: All working positions are not in motion: The surrounding environment has reached the specified upper limit. Do not collect the test data before the transmission reaches the specified upper limit. During the system inspection process, the driver should ensure that the machine is running properly.4 Test time
Under stable operation, the measuring time of each reading at each measuring point should be within the range of 1~31:. Machine configuration and operation
A (standard)
Before reading a set of parameters each time, the engine should be in a low-speed idling state and then reach the new set speed under stable no-load state specified by the manufacturer.
8 Acoustic measurement
B.1 The data collected by the measuring instrument shall be integrated as an average value, which shall comply with the requirements of IEC 6004-4 for type 4 instruments. The equivalent continuous A level. Unit R can be obtained by formula (:
In practice: T - measurement time, that is, the approximate running time of the machine during the test: P () - calibration sound pressure of the sound signal
Reference sound pressure (20 μP):
Gn/F 15710.2—1996
Or, use formula: 2) to obtain the numerical integration: tram. = 3u Ig
Where: 10
The time of the system accounts for a percentage of the entire measurement time limit. The interval is 1B or heavy:
A The sound level should comply with the E3?5 standard "type measurement layer solution measurement, only the time of the device is subject to the "increase" block B.2 Number of measurements
At each microphone measurement point, three measurements are required. In order to meet the requirements in 9.3, additional measurements may be required. 9 Use the average equivalent continuous sound level on the measurement surface to calculate the weighted power level 9 Calculate the average equivalent continuous A sound level on the measurement surface The average equivalent continuous A sound level on the measurement surface should be calculated by the dB reference sound 20a equivalent continuous A production level value (31 calculation:
=1C IeN4
[1F10*
Where: Lmn.-
The continuous sound level measured from the first microphone measuring point, the total number of microphone measuring points is calculated by K (2uPE).
9.2A Design Power Level Calculation
A Design Sound Efficiency Level of the Array I~. Single dB, Shan formula (1) Lwx = Lrn,T - K - 10 lg %
Where: One-dimensional surface area, unit m, for hemispherical surface S=; S, -lr*:
Liu at r=4 ㎡.
10 1gs
r=:6 m,
environmental positive value, unit dB (2 new B/T3767-19 divided by A) 93 measurement results determination
must be provided by each speaker diffuse point to the three groups of storage level values (see 82 three borrowed two of the difference is within 1dB, not satisfied, need additional test, the difference between the two values within 1B calculated as the A-weighted sound power value: if there is less than a pair of sound power level calculation value to meet the above requirements, then the number of rounded. The arithmetic mean of the values shall be taken as the limit compensation.
10 Record all the tests conducted according to this standard. The following shall be recorded: 10.1 Test machine
a) Machine make
h) Machine type
) Machine number;
d) Machine configuration, including main components and make! The rated speed of the engine at rated torque at rated speed specified in ISO 1585 shall be 1c
10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and test site measurement ground type used, including diagram showing machine location: 1) Air pressure, humidity and wind speed of the test site. 10.3 Instruments
a) Name of the instrument, type and number of the instrument: 1) Calibration method of the instrument system;
e) Calibration period and points of the acoustic calibrator system. 10.4 Data
a) Location of the acoustic calibrator:
1 Connect to the 8th level and require the efficiency of each high-end measurement point to be Class A c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
A7 safety and operation
GB/116710. 2-:996
Appendix A
(Standard Record:
Configuration and operation of the machine
During the test, the relevant standard safety regulations and the manufacturer's operating instructions shall be observed. A2 Configuration of the machine
The machine is equipped with standard working equipment (bucket, bulldozer, etc.) as specified by the manufacturer. The fuel tank is filled with no more than half of the full fuel. The fuel tank is filled with fuel within the specified range during production. The machine is placed on the test track. The cutting edge of the excavator or loaded bucket or bulldozer is placed 30mm50m wide from the ground. If the height is less than 250m, the maximum height is exceeded. 44 (excluding disassembly) or the cutting edge of the plate: excluding active teeth) The plane formed by the shape must be parallel to the resistance surface (operation position). A3 The operation of the machine
The function is stationary and the brake is used to stop. The engine is running at the rated speed specified by the manufacturer under no-load conditions. This is the speed at which the engine outputs 150-1535 rpm. The transmission is in neutral position: All working positions are not in motion: The surrounding environment has reached the specified upper limit. Do not collect the test data before the transmission reaches the specified upper limit. During the system inspection process, the driver should ensure that the machine is running properly.1 Test machine
a) Machine make
h) Machine type
) Machine code;
d) Machine configuration, including main equipment and accessories. The rated speed of the engine at rated torque shall be as specified in ISO 1585.
10.2 Acoustic environment
GBT 16710.7-1996
a) Description of the test site and test site measurement ground type including the diagram showing the machine position: 1) Test site atmosphere, pressure, relative humidity and wind speed. 10.3 Instruments
a) Name of the instrument, type and serial number: 1) Method of calibration of the instrument system;
e) Calibration period and quick notes of the acoustic calibrator instrument system. 10.4 Industry-University Data
a) Transducer position:
1 connected to the 8th to require the efficiency of each high-use point and each quantity to be Class A c! 4 sound levels of background sound at multiple sound transmission group points; all the time calculation results, add the sound positive and negative calculation and display to [decimal place;
) According to .1 [calculated equivalent continuous sound level; e: method 92 to calculate the day of the A six power frequency:
11 report content
1) 9.3 calculated 4 output gram rate level back to the nearest integer (rate C.5. rounded to a smaller number. [rounded to a larger number
h) machine step selection factory model. Screen guide, SD1555 determine the effective power kW machine configuration: and the test site used for the mother ground type: () the engine rated speed given by the manufacturer (engine according to 1S door 1585 rated speed), it
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