JB/T 7515-1994 Four-phase parallel connecting rod pulsation continuously variable transmission
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T7515-94
Four-phase parallel connecting rod pulsating continuously variable transmission
Issued on October 25, 1994
Ministry of Machinery Industry of the People's Republic of China
Implementation on October 1, 1995
Mechanical Industry Standard of the People's Republic of China
Four-phase parallel connecting rod pulsating continuously variable transmission
1 Subject content and scope of application
JB/T7515-94
This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules and packaging, storage and transportation of four-phase parallel connecting rod pulsating continuously variable transmission.
This standard is applicable to mechanical continuously variable transmission (hereinafter referred to as transmission) with an input power of 0.09 to 0.37 kW, consisting of four sets of parallel arranged one-way overrunning clutches and crank rocker mechanism groups with a phase difference of 90°. This standard applies to constant torque transmissions that mainly transmit motion. This standard applies to the basic type of transmissions. 2 Reference standards
GB6404
GB11368
Packaging storage and transportation pictorial signs
Method for determining the sound power level of gear device noise Gear transmission device cleanliness
GB/T13384
General technical conditions for packaging of electromechanical products
ZBY110
ZBY111
Torque and speed measuring instrument
Torque and speed sensor
3 Models and basic parameters
3.1 Model
The transmission model includes: product code, input power and output shaft rotation direction code. 3.1.1 Product code
The transmission code is represented by the Chinese phonetic letter "MT". 3.1.2 Output shaft rotation direction code
The transmission output shaft rotation direction is determined by facing the end face of the output shaft extension, and its codes are represented by Chinese phonetic letters, "S" for clockwise rotation and "N\ for counterclockwise rotation. 3.1.3 Model representation example
Output shaft clockwise rotation
Input power 0.09kW
Product code
3.2 Basic parameters
3.2.1: Main performance parameters
The main performance parameters of the transmission shall comply with the provisions of Table 1. 3.2.2 External installation and connection dimensions
The installation dimensions, shaft extension connection dimensions and external dimensions of the transmission are shown in Figure 1 and Table 2. Approved by the Ministry of Machinery Industry on October 25, 1994
Implementation on October 1, 1995
Input power
JB/T 7515--94
Table 1 Main performance parameters
Input speed
Maximum output torque
Maximum output power
0, 063
Output speed range
Note: If necessary, MT0.09 can be equipped with a 0.12kW motor, MT0.18 can be equipped with a 0.25kW motor, and MT0.37 can be equipped with a 0.55kW motor.
Dimensional parameters of the transmission
Technical requirements
Basic requirements
1651149
Matching bolts
Shaft extension connection dimensions
External dimensions
JB/T7515-94
4.1.1 The transmission shall be manufactured according to the approved samples and technical documents through the prescribed procedures. 4.1.2 The material, hardness, surface roughness and dimensional accuracy of the main parts of the transmission shall meet the requirements of the design drawings. 4.2 Working parts
The ambient temperature for reliable operation of the transmission is -15~40℃. When it is below 0℃, it should be preheated before starting. Performance requirements of the whole machine
The transmission shall be stable and reliable when running within the working range, and the speed regulation shall be sensitive. 4.3.1
When the transmission is running without load, the input torque shall not be greater than the value specified in Table 3. Table 3 Maximum no-load input torque
Input speed
When the transmission is running at no load, the output speed range shall comply with the provisions of Table 1. MTO.37
When the transmission is running, there shall be no abnormal sound, and its no-load running noise shall not exceed the value specified in Table 4. Table 4 Noise
Noise sound power level
The effective value of the vibration velocity of the transmission shall comply with the provisions of Table 5. MTO.18
Table 5 Effective value of vibration velocity
Center height
Effective value of vibration velocity
When the transmission is running, the temperature rise of the oil pool shall not be greater than the value specified in Table 6, and its maximum temperature shall not exceed 78°C. Table 6 Oil pool temperature rise
No load operation temperature rise
Load operation temperature rise
When the transmission is in load operation, its slip ratio shall not exceed the value specified in Table 7, Table 7 Slip ratio
Output speedbZxz.net
Slip ratio
Transmission efficiency shall not be lower than the value specified in Table 8. Table 8 Efficiency
Output speed
Transmission cleanliness shall not be greater than the value specified in Table 9. 150
Impurity weight
JB/T7515-94
Table 9 Cleanliness
When the transmission is in no load operation, adjust to the highest speed, start 5 times within 2 minutes, and no faults shall occur. When the output shaft speed is zero, the transmission acts as a clutch. The radial runout of the outermost end of the transmission shaft extension shall not be greater than the provisions of Table 10. Table 10 Shaft extension radial runout
Extension diameter
Radial runout
The parallelism of the transmission axis to the foot support surface is 100:0.2mm. There shall be no oil leakage at the matching and sealing points of the transmission. 4.4 Appearance quality requirements
4.4.1 The outer surface of the transmission shall not have bulges, depressions and pores. 9~15
4.4.2 The paint on the outer surface of the transmission shall be bright, flat, solid and of uniform color, and shall not have defects such as paint leakage, bubbles, peeling, etc. 5 Test method
The performance data in this standard are obtained based on the following test methods. 5.1 Test conditions
5.1.1 The transmission test shall be carried out on a special test bench. mg/L
5.1.2 During the test, the indoor ambient temperature is 23±5℃ (10～35℃ is also allowed if necessary), and the air should circulate freely. Forced circulation is not allowed.
5.2 Test device and test instruments
5.2.1 The test device consists of a motor, a transmission, a sensor, a loader, a coupling and a test platform. The schematic diagram of the test device is shown in Figure 2.
Figure 2 Schematic diagram of the test device
1-Test platform: 2-Motor: 3.5-Torque and speed sensor: 4-Tested transmission 6-Loader 17, 8, 9, 10-Coupling 5.2.2 The driving and loading methods of the test device should be compatible with the test requirements. The loading torque and speed should be stable during the test. The fluctuation should not exceed 3%.
JB/T7515-94
5.2.3 The detection accuracy of the devices and instruments used for the test should comply with the provisions of Table 11. Table 11 Test instruments and accuracy
Test instruments
Speed and torque measuring instrument
Thermometer
Analytical balance
Noise measuring instrument
Accident measuring instrument
Accuracy requirements
Torque measurement ±1%
Speed measurement ±0.5%
Sensitivity (1/10000g
±1dB(A)
Error does not exceed ±5%
Priority should be given to the torque and speed measuring instrument specified in ZBY110 and the torque and speed sensor specified in ZBY111. Other measuring instruments and sensors that meet the requirements in 5.2.4 may also be used. 5.2.5 The coaxiality requirements after the test device is installed shall comply with the provisions of ZBY111. 5.3 Test procedure
5.3.1 Test preparation||tt ||After the transmission under test, test equipment and sensors are installed as required, the measuring instrument is installed in a position that is convenient for observation, and the wiring, self-calibration and zeroing before testing are performed.
When the transmission output speed is 40, 150 and 300r/min, it is run at no load for 20 minutes respectively. After a total of 1 hour of continuous operation, the following test is carried out.
5.3.2 No-load operation test
5.3.2.1 When the transmission is running at no load, turn the speed control hand wheel by hand to test the input torque value within the output speed range. 5.3.2.2 When the transmission is running at no load, turn the speed control hand wheel by hand to test the output speed range. When the nominal output speed is 40, 150 and 300r/min respectively, 10 groups of input speed na and output speed nes data are measured [For data collection and processing methods, see Appendix A (Supplement). 5.3.2.3 When the transmission is running at the highest output shaft speed, the noise shall be measured in accordance with GB6404. 5.3.2.4 When the transmission is running at the highest output shaft speed, the effective value of the vibration velocity shall be measured on the transmission housing based on the height of the output shaft centerline, and the larger value shall be taken as the measured value. 5.3.3 Load operation test
5.3.3.1 The load operation test is divided into four stages of loading at 25%, 50%, 75% and 100% of the rated load of the output shaft. The first three stages are operated at an output speed below 100t/min. The operation time of each stage is not less than 15min, and no abnormality shall occur: Then it is operated at the 100% rated load stage. The operation time is based on the stability of the lubricating oil temperature, but it should be not less than 2h. The stability of the lubricating oil temperature means that when the transmission is running, the change of the lubricating oil temperature within 30min is not greater than 1C. 5.3.3.2 At the 100% rated load stage, when the nominal output speed is 40, 150 and 300r/min respectively, 10 sets of input speed, torque and output speed, torque data are measured (see Appendix A for data acquisition and processing methods). The transmission slip rate is calculated according to formula (1):
Where, n. -
,—average input speed under load at the same speed regulating position, r/min; i. average output speed under load at the same speed regulating position, r/mina—--average input speed under space dispersion at the same speed regulating position, r/min:b—average output speed under no-load at the same speed regulating position, r/min,.**+*+**(1)
5.3.3.4 Transmission efficiency is calculated according to formula (2): JB/T7515-94
In the formula; Tu—each measured value of input torque at the same speed regulating position, N·m: Tz—each measured value of output torque at the same speed regulating position, N·m; —each measured value of input speed at the same speed regulating position, r/min; z——each measured value of output speed at the same speed regulating position, r/min; N—the number of effective measurements of torque and speed at the same speed regulating position. 5.3.4 Temperature rise test
The temperature rise test of the transmission is divided into the no-load operation temperature rise test and the loaded operation temperature rise test. 5.3.4.1 No-load operation oil pool temperature measurement
After the transmission output shaft runs at the highest speed and no-load for 30 minutes, use a thermometer to measure the oil pool temperature every 15 minutes until the temperature stabilizes.
5.3.4.2 Load operation oil pool temperature measurement
When the transmission output speed is 150r/min, after running at rated load for 30 minutes, use a thermometer to measure the oil pool temperature every 15 minutes until the temperature stabilizes.
5.3.4.3 Determination of ambient temperature
Place an oxygen expansion bulb thermometer 1.5m away from the surface of the transmission to be tested. The height of the thermometer expansion bulb from the ground is the same as the center line of the transmission shaft a.
The thermometer should be placed without being affected by external radiation heat and airflow: The reading of the ambient temperature value should be carried out simultaneously with the reading of the transmission oil pool temperature value c.
5.3.4.4 The temperature rise of the transmission is calculated according to (3): A=-te
Where; △r—temperature rise at no load or rated load, -- oil temperature at no load or rated load, °C; fe
ambient temperature at no load or rated load, °C. 5.3.5 Overload test
5.3.5.1After the load test, the transmission is subjected to an overload test at an output speed of 150r/min and 110% of the rated load. The test time of the loading stage shall not be less than 5min.
5.3.5.2 After the overload test, the transmission shall not have any abnormal phenomenon. 5.3.6 Oil leakage inspection
When the transmission is running under load, use visual inspection method to observe that there is more than one drop every 120 minutes at the fixed connection part and more than one drop every 60 minutes at the movable connection part. It is oil leakage.
5.3.7 The cleanliness of the transmission shall be determined in accordance with GB11368. 6 Inspection rules
6.1 Products must be inspected and qualified by the manufacturer before they can leave the factory, and they must be accompanied by product certificates, product instructions, and packing lists. 6.2 The inspection of the transmission is divided into factory inspection and type inspection. 6.3 Factory inspection
6.3.1 The output speed range of the transmission shall comply with the provisions of Article 4.3.3. 6.3.2 The performance of the transmission speed regulating mechanism shall comply with the provisions of Article 4.3.1. 6
JB/T7515-94
6.3.3 The oil pool temperature rise test during no-load operation shall comply with the provisions of Article 4.3.6. The no-load starting performance shall comply with the provisions of Article 4.3.10. 6.3.4
The radial runout of the outermost end of the transmission shaft extension shall comply with the provisions of Article 4.3, 12. The parallelism of the transmission axis to the foot support surface shall comply with the provisions of Article 4.3.13. 6.3.6
The transmission seal inspection shall comply with the provisions of Article 4.3.14. 6.3.7
The appearance quality of the transmission shall comply with the provisions of Article 4.4. 6.3.8
6.4 Type test
Type test shall be carried out for any of the following situations: products produced for the first time after identification and finalization or old products produced by a new factory; when there are major changes in the design, process or materials of the products produced normally, which may affect the performance of the products; when the products that are not produced frequently are produced again. The transmission type test items are shown in Table 12.
Table 12 Type inspection items
Inspection items
Speed regulation performance
Output speed range
Load oil pool temperature rise
Starting performance
Radial circumferential runout of shaft extension
Parallelism of axis centerline to foot support
Sealing
Noise measurement
Slip ratio test
Efficiency test
Cleanliness inspection
Appearance quality inspection
Effective value of braking speed
Sampling method and judgment principle
Sampling method
6.5.1.1 Transmissions must be inspected for each unit before leaving the factory. Technical requirements clauses
Test methods clauses and test methods
Hand feeling and visual inspection
5. 3. 2. 2
Dry micrometer measurement
Micrometer measurement
5. 3. 3.3
5.3, 2. 4
Unit products subject to type inspection shall be selected from the qualified products in the factory inspection according to the batch inspection counting sampling procedure of GB2828 and the provisions of 6.5.1.2
Sampling table>.
6.5.1.3 For finalized products, 2% of the average monthly output of various models shall be subject to type inspection every two years, but there shall be no less than 2 units of each model. 6.5.2 Judgment Principles
6. 5. 2. 1
Production,
6. 5. 2. 2
When the type inspection fails, the product should be stopped from delivery, and the production should be stopped at this time, and it can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall have a fixed label on a conspicuous position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
Products should be packed in wooden boxes when leaving the factory, and their packaging should comply with the provisions of GB/T13384. The outside of the packaging box should be marked with "upward" and "moisture-proof" signs, and the signs should comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission should comply with the transportation regulations marked on the packaging box and be suitable for land, water transportation and loading and unloading requirements. 7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gas.1 Load operation test is divided into four stages of loading at 25%, 50%, 75% and 100% of the rated load of the output shaft. The first three stages are operated at an output speed below 100t/min. The operation time of each stage is not less than 15min, and no abnormality shall occur: Then it is operated at the 100% rated load stage. The operation time is based on the stability of the lubricating oil temperature, but it should be not less than 2h. The stability of the lubricating oil temperature means that when the transmission is running, the change of the lubricating oil temperature within 30min is not greater than 1C. 5.3.3.2 At the 100% rated load stage, when the nominal output speed is 40, 150300r/min respectively, 10 sets of input speed, torque and output speed, torque data are measured (see Appendix A for data acquisition and processing methods). The transmission slip rate is calculated according to formula (1):
Where, n. -
,—average input speed under load at the same speed regulating position, r/min; i. average output speed under load at the same speed regulating position, r/mina—--average input speed under space dispersion at the same speed regulating position, r/min:b—average output speed under no-load at the same speed regulating position, r/min,.**+*+**(1)
5.3.3.4 Transmission efficiency is calculated according to formula (2): JB/T7515-94
In the formula; Tu—each measured value of input torque at the same speed regulating position, N·m: Tz—each measured value of output torque at the same speed regulating position, N·m; —each measured value of input speed at the same speed regulating position, r/min; z——each measured value of output speed at the same speed regulating position, r/min; N—the number of effective measurements of torque and speed at the same speed regulating position. 5.3.4 Temperature rise test
The temperature rise test of the transmission is divided into the no-load operation temperature rise test and the loaded operation temperature rise test. 5.3.4.1 No-load operation oil pool temperature measurement
After the transmission output shaft runs at the highest speed and no-load for 30 minutes, use a thermometer to measure the oil pool temperature every 15 minutes until the temperature stabilizes.
5.3.4.2 Load operation oil pool temperature measurement
When the transmission output speed is 150r/min, after running at rated load for 30 minutes, use a thermometer to measure the oil pool temperature every 15 minutes until the temperature stabilizes.
5.3.4.3 Determination of ambient temperature
Place an oxygen expansion bulb thermometer 1.5m away from the surface of the transmission to be tested. The height of the thermometer expansion bulb from the ground is the same as the center line of the transmission shaft a.
The thermometer should be placed without being affected by external radiation heat and airflow: The reading of the ambient temperature value should be carried out simultaneously with the reading of the transmission oil pool temperature value c.
5.3.4.4 The temperature rise of the transmission is calculated according to (3): A=-te
Where; △r—temperature rise at no load or rated load, -- oil temperature at no load or rated load, °C; fe
ambient temperature at no load or rated load, °C. 5.3.5 Overload test
5.3.5.1After the load test, the transmission is subjected to an overload test at an output speed of 150r/min and 110% of the rated load. The test time of the loading stage shall not be less than 5min.
5.3.5.2 After the overload test, the transmission shall not have any abnormal phenomenon. 5.3.6 Oil leakage inspection
When the transmission is running under load, use visual inspection method to observe that there is more than one drop every 120 minutes at the fixed connection part and more than one drop every 60 minutes at the movable connection part. It is oil leakage.
5.3.7 The cleanliness of the transmission shall be determined in accordance with GB11368. 6 Inspection rules
6.1 Products must be inspected and qualified by the manufacturer before they can leave the factory, and they must be accompanied by product certificates, product instructions, and packing lists. 6.2 The inspection of the transmission is divided into factory inspection and type inspection. 6.3 Factory inspection
6.3.1 The output speed range of the transmission shall comply with the provisions of Article 4.3.3. 6.3.2 The performance of the transmission speed regulating mechanism shall comply with the provisions of Article 4.3.1. 6
JB/T7515-94
6.3.3 The oil pool temperature rise test during no-load operation shall comply with the provisions of Article 4.3.6. The no-load starting performance shall comply with the provisions of Article 4.3.10. 6.3.4
The radial runout of the outermost end of the transmission shaft extension shall comply with the provisions of Article 4.3, 12. The parallelism of the transmission axis to the foot support surface shall comply with the provisions of Article 4.3.13. 6.3.6
The transmission seal inspection shall comply with the provisions of Article 4.3.14. 6.3.7
The appearance quality of the transmission shall comply with the provisions of Article 4.4. 6.3.8
6.4 Type test
Type test shall be carried out for any of the following situations: products produced for the first time after identification and finalization or old products produced by a new factory; when there are major changes in the design, process or materials of the products produced normally, which may affect the performance of the products; when the products that are not produced frequently are produced again. The transmission type test items are shown in Table 12.
Table 12 Type inspection items
Inspection items
Speed regulation performance
Output speed range
Load oil pool temperature rise
Starting performance
Radial circumferential runout of shaft extension
Parallelism of axis centerline to foot support
Sealing
Noise measurement
Slip ratio test
Efficiency test
Cleanliness inspection
Appearance quality inspection
Effective value of braking speed
Sampling method and judgment principle
Sampling method
6.5.1.1 Transmissions must be inspected for each unit before leaving the factory. Technical requirements clauses
Test methods clauses and test methods
Hand feeling and visual inspection
5. 3. 2. 2
Dry micrometer measurement
Micrometer measurement
5. 3. 3.3
5.3, 2. 4
Unit products subject to type inspection shall be selected from the qualified products in the factory inspection according to the batch inspection counting sampling procedure of GB2828 and the provisions of 6.5.1.2
Sampling table>.
6.5.1.3 For finalized products, 2% of the average monthly output of various models shall be subject to type inspection every two years, but there shall be no less than 2 units of each model. 6.5.2 Judgment Principles
6. 5. 2. 1
Production,
6. 5. 2. 2
When the type inspection fails, the product should be stopped from delivery, and the production should be stopped at this time, and it can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall have a fixed label on a conspicuous position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
Products should be packed in wooden boxes when leaving the factory, and their packaging should comply with the provisions of GB/T13384. The outside of the packaging box should be marked with "upward" and "moisture-proof" signs, and the signs should comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission should comply with the transportation regulations marked on the packaging box and be suitable for land, water transportation and loading and unloading requirements. 7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gas.1 Load operation test is divided into four stages of loading at 25%, 50%, 75% and 100% of the rated load of the output shaft. The first three stages are operated at an output speed below 100t/min. The operation time of each stage is not less than 15min, and no abnormality shall occur: Then it is operated at the 100% rated load stage. The operation time is based on the stability of the lubricating oil temperature, but it should be not less than 2h. The stability of the lubricating oil temperature means that when the transmission is running, the change of the lubricating oil temperature within 30min is not greater than 1C. 5.3.3.2 At the 100% rated load stage, when the nominal output speed is 40, 150300r/min respectively, 10 sets of input speed, torque and output speed, torque data are measured (see Appendix A for data acquisition and processing methods). The transmission slip rate is calculated according to formula (1):
Where, n. -
,—average input speed under load at the same speed regulating position, r/min; i. average output speed under load at the same speed regulating position, r/mina—--average input speed under space dispersion at the same speed regulating position, r/min:b—average output speed under no-load at the same speed regulating position, r/min,.**+*+**(1)
5.3.3.4 Transmission efficiency is calculated according to formula (2): JB/T7515-94
In the formula; Tu—each measured value of input torque at the same speed regulating position, N·m: Tz—each measured value of output torque at the same speed regulating position, N·m; —each measured value of input speed at the same speed regulating position, r/min; z——each measured value of output speed at the same speed regulating position, r/min; N—the number of effective measurements of torque and speed at the same speed regulating position. 5.3.4 Temperature rise test
The temperature rise test of the transmission is divided into the no-load operation temperature rise test and the loaded operation temperature rise test. 5.3.4.1 No-load operation oil pool temperature measurement
After the transmission output shaft runs at the highest speed and no-load for 30 minutes, use a thermometer to measure the oil pool temperature every 15 minutes until the temperature stabilizes.
5.3.4.2 Load operation oil pool temperature measurement
When the transmission output speed is 150r/min, after running at rated load for 30 minutes, use a thermometer to measure the oil pool temperature every 15 minutes until the temperature stabilizes.
5.3.4.3 Determination of ambient temperature
Place an oxygen expansion bulb thermometer 1.5m away from the surface of the transmission to be tested. The height of the thermometer expansion bulb from the ground is the same as the center line of the transmission shaft a.
The thermometer should be placed without being affected by external radiation heat and airflow: The reading of the ambient temperature value should be carried out simultaneously with the reading of the transmission oil pool temperature value c.
5.3.4.4 The temperature rise of the transmission is calculated according to (3): A=-te
Where; △r—temperature rise at no load or rated load, -- oil temperature at no load or rated load, °C; fe
ambient temperature at no load or rated load, °C. 5.3.5 Overload test
5.3.5.1After the load test, the transmission is subjected to an overload test at an output speed of 150r/min and 110% of the rated load. The test time of the loading stage shall not be less than 5min.
5.3.5.2 After the overload test, the transmission shall not have any abnormal phenomenon. 5.3.6 Oil leakage inspection
When the transmission is running under load, use visual inspection method to observe that there is more than one drop every 120 minutes at the fixed connection part and more than one drop every 60 minutes at the movable connection part. It is oil leakage.
5.3.7 The cleanliness of the transmission shall be determined in accordance with GB11368. 6 Inspection rules
6.1 Products must be inspected and qualified by the manufacturer before they can leave the factory, and they must be accompanied by product certificates, product instructions, and packing lists. 6.2 The inspection of the transmission is divided into factory inspection and type inspection. 6.3 Factory inspection
6.3.1 The output speed range of the transmission shall comply with the provisions of Article 4.3.3. 6.3.2 The performance of the transmission speed regulating mechanism shall comply with the provisions of Article 4.3.1. 6
JB/T7515-94
6.3.3 The oil pool temperature rise test during no-load operation shall comply with the provisions of Article 4.3.6. The no-load starting performance shall comply with the provisions of Article 4.3.10. 6.3.4
The radial runout of the outermost end of the transmission shaft extension shall comply with the provisions of Article 4.3, 12. The parallelism of the transmission axis to the foot support surface shall comply with the provisions of Article 4.3.13. 6.3.6
The transmission seal inspection shall comply with the provisions of Article 4.3.14. 6.3.7
The appearance quality of the transmission shall comply with the provisions of Article 4.4. 6.3.8
6.4 Type test
Type test shall be carried out for any of the following situations: products produced for the first time after identification and finalization or old products produced by a new factory; when there are major changes in the design, process or materials of the products produced normally, which may affect the performance of the products; when the products that are not produced frequently are produced again. The transmission type test items are shown in Table 12.
Table 12 Type inspection items
Inspection items
Speed regulation performance
Output speed range
Load oil pool temperature rise
Starting performance
Radial circumferential runout of shaft extension
Parallelism of axis centerline to foot support
Sealing
Noise measurement
Slip ratio test
Efficiency test
Cleanliness inspection
Appearance quality inspection
Effective value of braking speed
Sampling method and judgment principle
Sampling method
6.5.1.1 Transmissions must be inspected for each unit before leaving the factory. Technical requirements clauses
Test methods clauses and test methods
Hand feeling and visual inspection
5. 3. 2. 2
Dry micrometer measurement
Micrometer measurement
5. 3. 3.3
5.3, 2. 4
Unit products subject to type inspection shall be selected from the qualified products in the factory inspection according to the batch inspection counting sampling procedure of GB2828 and the provisions of 6.5.1.2
Sampling table>.
6.5.1.3 For finalized products, 2% of the average monthly output of various models shall be subject to type inspection every two years, but there shall be no less than 2 units of each model. 6.5.2 Judgment Principles
6. 5. 2. 1
Production,
6. 5. 2. 2
When the type inspection fails, the product should be stopped from delivery, and the production should be stopped at this time, and it can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall have a fixed label on a conspicuous position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
Products should be packed in wooden boxes when leaving the factory, and their packaging should comply with the provisions of GB/T13384. The outside of the packaging box should be marked with "upward" and "moisture-proof" signs, and the signs should comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission should comply with the transportation regulations marked on the packaging box and be suitable for land, water transportation and loading and unloading requirements. 7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gas.=T—average output speed under no-load at the same speed adjustment position, r/min,.**+*+**(1)
5.3.3.4 Transmission efficiency is calculated according to formula (2): JB/T7515-94
wherein; Tu—each measured value of input torque at the same speed adjustment position, N·m; Tz—each measured value of output torque at the same speed adjustment position, N·m; —each measured value of input speed at the same speed adjustment position, r/min; z——each measured value of output speed at the same speed adjustment position, r/min; N—the number of effective measurements of torque and speed at the same speed adjustment position. 5.3.4 Temperature rise test
The temperature rise test of the transmission is divided into no-load operation temperature rise test and load operation temperature rise test. 5.3.4.1 Determination of oil pool temperature during no-load operation
After the transmission output shaft has been running at no-load for 30 minutes at the highest speed, the temperature of the oil pool shall be measured every 15 minutes with a thermometer until the temperature stabilizes.
5.3.4.2 Determination of oil pool temperature during load operation
When the transmission output speed is 150r/min, after running at rated load for 30 minutes, the temperature of the oil pool shall be measured every 15 minutes with a thermometer until the temperature stabilizes.
5.3.4.3 Determination of ambient temperature
Place an oxygen expansion bulb thermometer 1.5m away from the surface of the transmission to be tested. The height of the thermometer expansion bulb from the ground shall be the same as the center line of the transmission shaft a.
The placement of the thermometer shall not be affected by external radiant heat and airflow: The reading of the ambient temperature value shall be carried out simultaneously with the reading of the transmission oil pool temperature value. c.
5.3.4.4 The temperature rise of the transmission shall be calculated according to (3): A=-te
wherein; △r—temperature rise at no load or rated load, ---oil temperature at no load or rated load, °C; fe
ambient temperature at no load or rated load, °C. 5.3.5 Overload test
5.3.5.1 After the load test, the transmission shall be subjected to an overload test at 110% of the rated load at an output speed of 150r/min. The test time of the loading stage shall not be less than 5min.
5.3.5.2 After the overload test, the transmission shall not have any abnormal phenomenon. 5.3.6 Oil leakage inspection
When the transmission is running under load, it shall be observed by visual inspection. If there is more than one drop of oil per 120min at the fixed connection part and more than one drop of oil per 60min at the movable connection part, it is considered to be leaking oil.
5.3.7 The cleanliness of the transmission shall be determined in accordance with GB11368. 6 Inspection rules
6.1 Products must be inspected and qualified by the manufacturer before they can leave the factory, and they must be accompanied by a product certificate, product instruction manual, and packing list. 6.2 The inspection of the transmission is divided into factory inspection and type inspection. 6.3 Factory inspection
6.3.1 The output speed range of the transmission shall comply with the provisions of Article 4.3.3. 6.3.2 The performance of the transmission speed regulating mechanism shall comply with the provisions of Article 4.3.1. 6
JB/T7515-94
6.3.3 The oil pool temperature rise test during no-load operation shall comply with the provisions of Article 4.3.6. The no-load starting performance shall comply with the provisions of Article 4.3.10. 6.3.4
The radial runout of the outermost end of the transmission shaft extension shall comply with the provisions of Article 4.3, 12. The parallelism of the transmission axis to the foot support surface shall comply with the provisions of Article 4.3.13. 6.3.6
The transmission seal inspection shall comply with the provisions of Article 4.3.14. 6.3.7
The appearance quality of the transmission shall comply with the provisions of Article 4.4. 6.3.8
6.4 Type inspection
Type tests shall be carried out for any of the following situations: products produced for the first time after identification and finalization or old products produced in a transferred factory; when the normally produced products have major changes in design, process or materials, which may affect the performance of the product; when products that are not frequently produced are produced again. The transmission type inspection items are shown in Table 12.
Table 12 Type inspection items
Inspection items
Speed regulation performance
Output speed range
Load oil pool temperature rise
Starting performance
Radial circumferential runout of shaft extension
Parallelism of axis centerline to foot support
Sealing
Noise measurement
Slip ratio test
Efficiency test
Cleanliness inspection
Appearance quality inspection
Effective value of braking speed
Sampling method and judgment principle
Sampling method
6.5.1.1 Transmissions must be inspected for each unit before leaving the factory. Technical requirements clauses
Test methods clauses and test methods
Hand feeling and visual inspection
5. 3. 2. 2
Dry micrometer measurement
Micrometer measurement
5. 3. 3.3
5.3, 2. 4
Unit products subject to type inspection shall be selected from the qualified products in the factory inspection according to the batch inspection counting sampling procedure of GB2828 and the provisions of 6.5.1.2
Sampling table>.
6.5.1.3 For finalized products, 2% of the average monthly output of various models shall be subject to type inspection every two years, but there shall be no less than 2 units of each model. 6.5.2 Judgment Principles
6. 5. 2. 1
Production,
6. 5. 2. 2
When the type inspection fails, the product should be stopped from delivery, and the production should be stopped at this time, and it can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall have a fixed label on a conspicuous position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
Products should be packed in wooden boxes when leaving the factory, and their packaging should comply with the provisions of GB/T13384. The outside of the packaging box should be marked with "upward" and "moisture-proof" signs, and the signs should comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission should comply with the transportation regulations marked on the packaging box and be suitable for land, water transportation and loading and unloading requirements. 7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gas.=T—average output speed under no-load at the same speed adjustment position, r/min,.**+*+**(1)
5.3.3.4 Transmission efficiency is calculated according to formula (2): JB/T7515-94
wherein; Tu—each measured value of input torque at the same speed adjustment position, N·m; Tz—each measured value of output torque at the same speed adjustment position, N·m; —each measured value of input speed at the same speed adjustment position, r/min; z——each measured value of output speed at the same speed adjustment position, r/min; N—the number of effective measurements of torque and speed at the same speed adjustment position. 5.3.4 Temperature rise test
The temperature rise test of the transmission is divided into no-load operation temperature rise test and load operation temperature rise test. 5.3.4.1 Determination of oil pool temperature during no-load operation
After the transmission output shaft has been running at no-load for 30 minutes at the highest speed, the temperature of the oil pool shall be measured every 15 minutes with a thermometer until the temperature stabilizes.
5.3.4.2 Determination of oil pool temperature during load operation
When the transmission output speed is 150r/min, after running at rated load for 30 minutes, the temperature of the oil pool shall be measured every 15 minutes with a thermometer until the temperature stabilizes.
5.3.4.3 Determination of ambient temperature
Place an oxygen expansion bulb thermometer 1.5m away from the surface of the transmission to be tested. The height of the thermometer expansion bulb from the ground shall be the same as the center line of the transmission shaft a.
The placement of the thermometer shall not be affected by external radiant heat and airflow: The reading of the ambient temperature value shall be carried out simultaneously with the reading of the transmission oil pool temperature value. c.
5.3.4.4 The temperature rise of the transmission shall be calculated according to (3): A=-te
wherein; △r—temperature rise at no load or rated load, ---oil temperature at no load or rated load, °C; fe
ambient temperature at no load or rated load, °C. 5.3.5 Overload test
5.3.5.1 After the load test, the transmission shall be subjected to an overload test at 110% of the rated load at an output speed of 150r/min. The test time of the loading stage shall not be less than 5min.
5.3.5.2 After the overload test, the transmission shall not have any abnormal phenomenon. 5.3.6 Oil leakage inspection
When the transmission is running under load, it shall be observed by visual inspection. If there is more than one drop of oil per 120min at the fixed connection part and more than one drop of oil per 60min at the movable connection part, it is considered to be leaking oil.
5.3.7 The cleanliness of the transmission shall be determined in accordance with GB11368. 6 Inspection rules
6.1 Products must be inspected and qualified by the manufacturer before they can leave the factory, and they must be accompanied by a product certificate, product instruction manual, and packing list. 6.2 The inspection of the transmission is divided into factory inspection and type inspection. 6.3 Factory inspection
6.3.1 The output speed range of the transmission shall comply with the provisions of Article 4.3.3. 6.3.2 The performance of the transmission speed regulating mechanism shall comply with the provisions of Article 4.3.1. 6
JB/T7515-94
6.3.3 The no-load oil pool temperature rise test shall comply with the provisions of Article 4.3.6. The no-load starting performance shall comply with the provisions of Article 4.3.10. 6.3.4
The radial runout of the outermost end of the transmission shaft extension shall comply with the provisions of Article 4.3, 12. The parallelism of the transmission axis to the foot support surface shall comply with the provisions of Article 4.3.13. 6.3.6
The transmission seal inspection shall comply with the provisions of Article 4.3.14. 6.3.7
The appearance quality of the transmission shall comply with the provisions of Article 4.4. 6.3.8
6.4 Type inspection
Type tests shall be carried out for any of the following situations: products produced for the first time after identification and finalization or old products produced in a transferred factory; when the normally produced products have major changes in design, process or materials, which may affect the performance of the product; when products that are not frequently produced are produced again. The transmission type inspection items are shown in Table 12.
Table 12 Type inspection items
Inspection items
Speed regulation performance
Output speed range
Load oil pool temperature rise
Starting performance
Radial circumferential runout of shaft extension
Parallelism of axis centerline to foot support
Sealing
Noise measurement
Slip ratio test
Efficiency test
Cleanliness inspection
Appearance quality inspection
Effective value of braking speed
Sampling method and judgment principle
Sampling method
6.5.1.1 Transmissions must be inspected for each unit before leaving the factory. Technical requirements clauses
Test methods clauses and test methods
Hand feeling and visual inspection
5. 3. 2. 2
Dry micrometer measurement
Micrometer measurement
5. 3. 3.3
5.3, 2. 4
Unit products subject to type inspection shall be selected from the qualified products in the factory inspection according to the batch inspection counting sampling procedure of GB2828 and the provisions of 6.5.1.2
Sampling table>.
6.5.1.3 For finalized products, 2% of the average monthly output of various models shall be subject to type inspection every two years, but there shall be no less than 2 units of each model. 6.5.2 Judgment Principles
6. 5. 2. 1
Production,
6. 5. 2. 2
When the type inspection fails, the product should be stopped from delivery, and the production should be stopped at this time, and it can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall have a fixed label on a conspicuous position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
Products should be packed in wooden boxes when leaving the factory, and their packaging should comply with the provisions of GB/T13384. The outside of the packaging box should be marked with "upward" and "moisture-proof" signs, and the signs should comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission should comply with the transportation regulations marked on the packaging box and be suitable for land, water transportation and loading and unloading requirements. 7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gas.5 Overload test
5.3.5.1 After the load test, the transmission shall be subjected to an overload test at 110% of the rated load at an output speed of 150r/min. The test time of the loading stage shall not be less than 5min.
5.3.5.2 After the overload test, the transmission shall not have any abnormal phenomenon. 5.3.6 Oil leakage inspection
When the transmission is running under load, it shall be observed by visual inspection. If there is more than one drop per 120min at the fixed connection part and more than one drop per 60min at the movable connection part, it is considered to be leaking oil.
5.3.7 The cleanliness of the transmission shall be determined in accordance with GB11368. 6 Inspection rules
6.1 Products must be inspected and qualified by the manufacturer before they can leave the factory, and must be accompanied by a product certificate, product instruction manual, and packing list. 6.2 Transmission inspections are divided into factory inspections and type inspections. 6.3 Factory inspection
6.3.1 The output speed range of the transmission shall comply with the provisions of Article 4.3.3. 6.3.2 The performance of the transmission speed regulating mechanism shall comply with the provisions of Article 4.3.1. 6
JB/T7515-94
6.3.3 The no-load oil pool temperature rise test shall comply with the provisions of Article 4.3.6. The no-load starting performance shall comply with the provisions of Article 4.3.10. 6.3.4
The radial runout of the outermost end of the transmission shaft extension shall comply with the provisions of Article 4.3, 12. The parallelism of the transmission axis to the foot support surface shall comply with the provisions of Article 4.3.13. 6.3.6
The transmission seal inspection shall comply with the provisions of Article 4.3.14. 6.3.7
The appearance quality of the transmission shall comply with the provisions of Article 4.4. 6.3.8
6.4 Type inspection
Type tests shall be carried out for any of the following situations: products produced for the first time after identification and finalization or old products produced in a transferred factory; when the normally produced products have major changes in design, process or materials, which may affect the performance of the product; when products that are not frequently produced are produced again. The transmission type inspection items are shown in Table 12.
Table 12 Type inspection items
Inspection items
Speed regulation performance
Output speed range
Load oil pool temperature rise
Starting performance
Radial circumferential runout of shaft extension
Parallelism of axis centerline to foot support
Sealing
Noise measurement
Slip ratio test
Efficiency test
Cleanliness inspection
Appearance quality inspection
Effective value of braking speed
Sampling method and judgment principle
Sampling method
6.5.1.1 Transmissions must be inspected for each unit before leaving the factory. Technical requirements clauses
Test methods clauses and test methods
Hand feeling and visual inspection
5. 3. 2. 2
Dry micrometer measurement
Micrometer measurement
5. 3. 3.3
5.3, 2. 4
Unit products subject to type inspection shall be selected from the qualified products in the factory inspection according to the batch inspection counting sampling procedure of GB2828 and the provisions of 6.5.1.2
Sampling table>.
6.5.1.3 For finalized products, 2% of the average monthly output of various models shall be subject to type inspection every two years, but there shall be no less than 2 units of each model. 6.5.2 Judgment Principles
6. 5. 2. 1
Production,
6. 5. 2. 2
When the type inspection fails, the product should be stopped from delivery, and the production should be stopped at this time, and it can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall have a fixed label on a conspicuous position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
Products should be packed in wooden boxes when leaving the factory, and their packaging should comply with the provisions of GB/T13384. The outside of the packaging box should be marked with "upward" and "moisture-proof" signs, and the signs should comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission should comply with the transportation regulations marked on the packaging box and be suitable for land, water transportation and loading and unloading requirements. 7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gas.5 Overload test
5.3.5.1 After the load test, the transmission shall be subjected to an overload test at 110% of the rated load at an output speed of 150r/min. The test time of the loading stage shall not be less than 5min.
5.3.5.2 After the overload test, the transmission shall not have any abnormal phenomenon. 5.3.6 Oil leakage inspection
When the transmission is running under load, it shall be observed by visual inspection. If there is more than one drop per 120min at the fixed connection part and more than one drop per 60min at the movable connection part, it is considered to be leaking oil.
5.3.7 The cleanliness of the transmission shall be determined in accordance with GB11368. 6 Inspection rules
6.1 Products must be inspected and qualified by the manufacturer before they can leave the factory, and must be accompanied by a product certificate, product instruction manual, and packing list. 6.2 Transmission inspections are divided into factory inspections and type inspections. 6.3 Factory inspection
6.3.1 The output speed range of the transmission shall comply with the provisions of Article 4.3.3. 6.3.2 The performance of the transmission speed regulating mechanism shall comply with the provisions of Article 4.3.1. 6
JB/T7515-94
6.3.3 The no-load oil pool temperature rise test shall comply with the provisions of Article 4.3.6. The no-load starting performance shall comply with the provisions of Article 4.3.10. 6.3.4
The radial runout of the outermost end of the transmission shaft extension shall comply with the provisions of Article 4.3, 12. The parallelism of the transmission axis to the foot support surface shall comply with the provisions of Article 4.3.13. 6.3.6
The transmission seal inspection shall comply with the provisions of Article 4.3.14. 6.3.7
The appearance quality of the transmission shall comply with the provisions of Article 4.4. 6.3.8
6.4 Type inspection
Type tests shall be carried out for any of the following situations: products produced for the first time after identification and finalization or old products produced in a transferred factory; when the normally produced products have major changes in design, process or materials, which may affect the performance of the product; when products that are not frequently produced are produced again. The transmission type inspection items are shown in Table 12.
Table 12 Type inspection items
Inspection items
Speed regulation performance
Output speed range
Load oil pool temperature rise
Starting performance
Radial circumferential runout of shaft extension
Parallelism of axis centerline to foot support
Sealing
Noise measurement
Slip ratio test
Efficiency test
Cleanliness inspection
Appearance quality inspection
Effective value of braking speed
Sampling method and judgment principle
Sampling method
6.5.1.1 Transmissions must be inspected for each unit before leaving the factory. Technical requirements clauses
Test methods clauses and test methods
Hand feeling and visual inspection
5. 3. 2. 2
Dry micrometer measurement
Micrometer measurement
5. 3. 3.3
5.3, 2. 4
Unit products subject to type inspection shall be selected from the qualified products in the factory inspection according to the batch inspection counting sampling procedure of GB2828 and the provisions of 6.5.1.2
Sampling table>.
6.5.1.3 For finalized products, 2% of the average monthly output of various models shall be subject to type inspection every two years, but there shall be no less than 2 units of each model. 6.5.2 Judgment Principles
6. 5. 2. 1
Production,
6. 5. 2. 2
When the type inspection fails, the product should be stopped from delivery, and the production should be stopped at this time, and it can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall have a fixed label on a conspicuous position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
Products should be packed in wooden boxes when leaving the factory, and their packaging should comply with the provisions of GB/T13384. The outside of the packaging box should be marked with "upward" and "moisture-proof" signs, and the signs should comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission should comply with the transportation regulations marked on the packaging box and be suitable for land, water transportation and loading and unloading requirements. 7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gas.2
When the type inspection fails, the product should be stopped from being delivered, and the production should also be stopped at this time. The product can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall be fixed with a label in an obvious position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
The product shall be packed in wooden boxes before leaving the factory, and its packaging shall comply with the provisions of GB/T13384. The outside of the packaging box shall be marked with "upward" and "moisture-proof" and other signs, and its signs shall comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission shall comply with the transportation regulations marked on the packaging box and shall be suitable for land, water transportation and loading and unloading requirements.7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gases.2
When the type inspection fails, the product should be stopped from being delivered, and the production should also be stopped at this time. The product can only be resumed after the new type inspection passes. If any item in the type inspection fails, the item shall be double-checked. If the item still fails in the random inspection, it shall be judged as a defective product. 7
Marking, packaging, transportation, storage
7.1 Marking
JB/T7515-94
Each transmission shall be fixed with a label in an obvious position. The label content includes:
Product name:
Product model:
Input power;
Input speed;
Output speed range:
Maximum output torque:
Machine weight:
Product number:
Factory date,
Manufacturer name:
Standard number.
7.2 Packaging
The product shall be packed in wooden boxes before leaving the factory, and its packaging shall comply with the provisions of GB/T13384. The outside of the packaging box shall be marked with "upward" and "moisture-proof" and other signs, and its signs shall comply with the provisions of GB191. The accompanying technical documents include:
Product certificate:
Instruction manual:
Packing list.
7.3 Transportation
During transportation, the transmission shall comply with the transportation regulations marked on the packaging box and shall be suitable for land, water transportation and loading and unloading requirements.7.4 Storage
The transmission should be stored in a ventilated and dry place without corrosive gases.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.