Some standard content:
Forestry Industry Standard of the People's Republic of China
LY/T1202.4—2001
neg ISO 5395 : 1990
Lawn mower
Test methods
Lawn mower-Test procedures
2001-07-24 Issued
State Forestry Administration Issued
2001-12-15 Implementation
LY/T 1202.4—2001
ISO Foreword
1 Model
2 Test methods for blade-type lawn mowers
Determination of brake time of blades
Sample Author's Note
&Oil and Rice Leakage Inspection
E. 4. Impact test
3. Blade imbalance or failure test
2.6 Model test
2.7 Companion test
Station, grass discharge channel, grass discharge shield and grass nesting device structural integrity test 2.8
Follow-up lawn scraper braking test
Single-dust lawn scraper single braking test
Ride-on lawn scraper running qualitative test
3. Roll-type lawn scraper Driving method of lawn scraper
The braking time of the blade is set
The sound of the lawn scraper is set
The height of the oil tank washing shuttle
The test test of the follow-up lawn scraper model Follow-up lawn scraper braking test
Grass feeding period grass line test
Riding section grass scraper braking test
Riding lawn scraper grass discharge line test 3.8
3. Appendix A (Appendix to the standard)
Appendix B (Appendix to the standard)
Appendix C (Appendix to the standard)
Appendix to the standard industry
Additional test equipment
Test target material penetration test
Projectile test report
Test report
Attachment E (Appendix to the specification)
LY/T1202.4-·2001
This international standard is a revision of the technical conditions of Y1212197 grass machine. After this revision, the original standard has become a series of standards.
The standard adopts 15395:1990 small dynamic grass machine, Turf tractors, grass and net spreading machines. Professional turf spreading machines and garden tractors with additional equipment. Definition, safety requirements and test procedures for complete machines and IS053!5, 1990/Amd.1.1092 (powered turf spreading machines, grass spreading machines, professional turf spreading machines and attached equipment. Definition, safety requirements and test procedures for complete machines and tractors? Supplement 1. In the internal wear instrument, the appropriate test method is adopted, and the lubrication time, operator's ear sound, lubrication box leakage and other secondary injuries are added, and the general test conditions are used as the standard. The source of this standard is the American National Standard ASI/CPH71.E-984, which adopts the fifth edition of the sound measurement method for the operation of the equipment and the operator's environment, and the method of calculating the super knowledge 3. The appendixes and appendix requirements of this standard. Appendix C are all international references: This standard is not a reference.
This standard shall be implemented from the date of implementation. 1.Y/T1202:1857 This standard is proposed by the National Forestry Machinery Standardization Technical Committee. This standard is initiated by the National Forestry Machinery Standardization Technical Committee. Drafting unit: Nantong Longitudinal Model International Co., Ltd. This standard was discussed and approved by the following units: Beijing Shenzhen Workers' College, Yangzhou Forest Machinery Manufacturing Co., Ltd., Yangzhou Forest Machinery, State Forestry Bureau, and the Institute of Forestry Machinery of the State Administration of Industry and Information Technology. The main contributors to this standard are: Mu Lingdi. In addition to Yu. Fan Yuan. LY^r1202.4—2001
ISO is a global organization that organizes national standards bodies (ISO member bodies). The work of formulating international standards is generally carried out through 190 technical committees. Each member group has the right to inform the committee of its interest in the topics determined by its technical committee. It can also cooperate with the relevant international organizations (governmental and non-governmental) in the work of the committee. In the field of electrotechnical standardization, ISO cooperates closely with the International Electrotechnical Commission (IEC). The international standards adopted by the technical committee are sent to the member groups for voting. It takes at least 75 votes of the member groups to pass an international standard.
International Standards Promotion ISO); 19th TS0/TC23 Tractor and Forest Machinery Technical Committee formulated. This edition 1 abolishes and replaces several parts of the old versions: 505395-1: 1084, ISO 5395-2: 1987, S(5391-311985 and its 1986 supplement: and all editions of S053-41585. Scope
Forestry Industry Standard of the People's Republic of China
Test method
Lawn mower
Lawn mower standard procedurewwW.bzxz.Net
LY/T1202.42001
negISO5395.1990
Y/T1232159
This standard specifies the test methods for the braking time of the blade of a single machine, the operator's ear noise, the oil tank leakage check, the impact test and the blade imbalance test items. This standard applies to dry blade mowers. This standard does not apply to dry blade mowers, blade mowers, or electric lawn mowers. 2. Test methods for dry blade mowers
2.1 How many blades are braked?
The blades rotate at a high rate of: 100 seconds. The time from the moment the operating mechanism is opened to the moment the blades stop rotating:
2.2 2.2.1 Test the amplifier, precision 1d13(A), precision 25mV/P day; - sound level standard, 0.5dB(A); measure the ambient wind speed with an accuracy of 13%, 1:- engine speed measuring instrument with an accuracy of 11%,
measure the ambient temperature with a precision of 12.2.2
2.2. 2.1
Height of the operator of the grass making machine: 1.65m~1.75m2.2.2.2 The test should be conducted by personnel who have received technical training and are currently using the test technology. The instrument's instruction manual or other documents should be obtained to ensure the correct use of all instruments, and the following special circumstances should be considered:2-2-2.3
The type of microphone, its physical properties and the relative direction of the source of change: The influence of environmental climatic conditions (temperature, humidity and atmospheric pressure) on the performance of the instrument. The test instrument may be affected by low humidity, so it should be noted!
Correct acoustic calibration process. On-site calibration should be carried out immediately before and after each test procedure is completed. Note: If the sound transmission data and sound efficiency meter are to be tested with electrical power, 2-2.2.4 The test should be carried out in a wind speed less than 5m/3. 2.2.2.5 The transmission site must be isolated and do not increase the vibration or sound pressure level readings. 2.2.2.6 Site control requirements: The test site should be large enough to allow the tank to open up and the center of the test site to be at least 153 meters away. There should be no signs, buildings or mountains within the test site. Site dimensions: The minimum size of the test site including the test site should be larger than the test site. The length and width should be larger than the test site. State Forestry Administration 2001-7-74 approved 2001-1215 implementation 1500 m, 1500 m); R (empty donkey purchase width? 1500 LY/T 1202.4--2001
Golden No. 3 length
to the sample.
Test coverage
Stop sound
b) Transmission displacement
The test site surface is free land, the surface is not frozen, the height is about 50m, ge
Unit: mm
2.2.2.7 The observer who reads the sound meter stands directly behind the mower operator, and other personnel are at least 7m away from the mower being tested. It should not affect the measured pressure level.
2.2.2.8 The back noise should be at least 10B1A lower than the noise level of the sensitive measuring equipment. 2.2.2.9 All leather mowers shall be tested under certain conditions: The test shall be carried out in the center of the test area, the engine shall be adjusted to the highest speed specified by the manufacturer, and the gearbox shall be adjusted to the position close to 50UL. 2.2.3 Determination method
2.2.3.1 The sound level shall be adjusted to the 1st gear. 2.2.3.2 Measure and record the ambient wind speed, ambient temperature, the maximum operating speed of the engine specified by the equipment manufacturer, the engine speed under these working conditions and the ambient pressure level. 2.2.3.3 The sound source should be kept in a normal position without contact with the sound source. It should be 168m above the ground and 25mm to the left or right of the center. When the handle is in the most forward position, it should be 200mm behind the rear point of the handle (see Figure 16).
LY/I1202.4—2001
2.2.3.1 The observation of the sound meter should reach at least 5% until the actual test is obtained. The sound meter should be tested and repeated at each position to obtain the maximum pressure.
2.2.4 Determination and calculation of sound level
Take the arithmetic mean of the sound level readings on the left and right sides of the product, and take the average value of the measured 3 decibels (A). Record the data in Table E1, see Table E (prompt recording). 2.3 Simple inspection
Fill the fuel tank with oil as specified, turn the mower 20° longitudinally and 30° diagonally and stop using for 1 minute to check whether it is full. 2.4 Replacement test 2.4.1 Test equipment The lawn mower should be placed in the test target described in Appendix A (Appendix 1 of the standard) for testing. The test makeup is shown in Figure 2. Unit: mm. 2.0 mm. 3.0 mm. 4.0 mm. 5.0 mm. 6.0 mm. 7.0 mm. 8.0 mm. 9.0 mm. 10.0 mm. 11.0 mm. 12.0 mm. 13.0 mm. 14.0 mm. 15.0 mm. Material 835
can be more medical
4100 standard
75s standard tube
sales station piece, girl in net 1
J size: self-length: 16mm; wire diameter: 3.2mm: total function: 17.75 net material diameter: 3Gmm: elasticity: 2.27Nm. Two-component flat:) quick impact test device
2.4.2 Test method
The test should include each piece component.
[.Y/T 1202-4 2001
Test device See Figure 2. The lawn mower is mounted on a 3mm3mm high quality pipe. The test machine should be opened 50mm from the top and the pipe inserted into the rotating blade at 10mm15mm from the tip. The pipe should be inserted into each blade assembly track once. A new pipe should be used for each test. The lawn mower should be rotated 156 times or until the engine ignites or the pipe is replaced. If the structure of the lawn mower does not allow the pipe to be used within the specified range, the lawn mower can be replaced. The mower is moved a short distance to ensure that the blade is balanced. 2.5 Blade imbalance test 2.5.7 Test equipment The mower is tested in the test configuration described in Appendix A (Annex to the standard). The test shall be carried out on a semi-flat surface. 2.5.2 Test method The test shall be carried out on each blade assembly. A new mower is used for each test. The blade imbalance is determined by formula (1): M = 0. C24 d
Formula, M—blade balance,
—blade diagram:
Remove material from the blade or increase material to obtain the unbalance calculated by formula (1). Each blade assembly should be tested within the test drive cycle for 10,000 seconds. Each blade component of a multi-axis evaluation machine should be tested separately. If the manufacturer agrees, the test can also be carried out simultaneously. 2.6 Foot model or exploration test
2.6.1 Test equipment
or The test device is a model blade as shown in Figure 3. 2.62. Test method
The lawn mower is placed on a hard surface, the lawn guard should be in its normal position on the platform: the lawn mower support should be aligned with the support surface,
the test is carried out under normal conditions.
The test is carried out with the blade in the highest and lowest positions. If the blade is in different positions at different angles, the test should be carried out at the two extreme heights of the blade. The bottom of the model blade is kept horizontal at any angle, and the blade is raised within a range of 15° before or after the blade is raised (see Figure 3). The model blade is tested by applying a force of 20 N to any part of the lawn mower outlet until the platform is raised from its original position. Regardless of the position of the blade, the force is applied to the lawn mower and the model blade after the lawn mower, see Figure 3. The standard type probe is made up of a selected pair of auxiliary grass machines. 2.7 Projectile companion test
2.7.1 The test equipment
can rotate
receive the test area
Y/T1202.4—2001
*The special reason
single surface is not mn liver,
install the test report area
self-registered in the Wei'an Park
Figure 3 foot-pull type real device and foot-tax type test device use unit mr.
2.7.1.1 The bad grass scraping Kai effect is tested in the new test solid climbing in Figure A1. And the rate calling car machine is placed on the comprehensive pad/plywood surface specified in Figure B2 and Figure B. During the whole test period, the single-axis machine shall be installed in the specified position of the corresponding point, and the steel ball below the machine shall not be blocked.
LY/I1202.42001
Production: The safety of the test period and the assembly of the plate shall meet the requirements of B (standard height) and C (standard appendix) to meet the requirements of the material science department. 2-7.1.2 The projectile shall be a steel ball with a diameter of 5.35 mm and a hardness of 13JIR, such as the steel ball of the lunar bearing): 2.7.1.3 The projectile point for the special object shall be placed at the 12 o'clock position shown in Figure 4~8, and the position shall be within 25mm of the actual return of the blade. For each blade, a projectile point shall be set. The outlet of the tooth should be fixed and flush with the upper surface of the palm mat (see Figure 2). This device should be adjustable so that the projectile maintains a constant speed.
The projectile should always ensure that the steel ball rises from the exit at a height of 1. Adjust the speed of the projectile so that the steel ball rises at least 30mm above the surface of the palm mat within a range of 10 degrees to a vertical line. Then put the mower in place and adjust the blades according to 2.7.2. The engine is operated at the speed specified by the manufacturer so that the steel balls enter the mower one by one. Adjust the speed of the steel balls until they are hit by the lawn mower blades and do not use cracked or twisted ones. Unit.nint
standard range, high 9N)
(7 IBT/±50)l
put the level quantity basic research
operation provincial distribution area
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2000100
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high natural beauty loss
high seat fire SAH network 20U fat
medical 4 single-axis random apple flat judgment apple machine test week
BTC one knife circle.
BTC-Figure,
(76n+RTC/250)5
simulated hand sleeping negative stomach
LY/T1202.4—7001
standard must resist, high YOI
entry point (2)
high 2000 cowhide jump (900
and above is the work period area)
work area
seat battery
height people in D to match
medical 5 double-draw on-demand lawn system single machine test target (750 1BTC,2±h0)\
injection bed
standard watt board fertilizer board merchant 500
Figure center single-axis ride-on lawn mower test giant unit!
Some standard net watts take aurora
Additional resistance to opening and energy problems
Towards motion energy
1C-sharp factor
LY/T1202.42001
Unit: om
(1)1ETC/2±6C)
Front entry point(2)
Unit: mm
Height 900 standard dead source according to fat length
GC/2=50)
To entry point3)
One hand start mold gas connection
Core start plate non-except for the dream
Drawing machine test!
2.7.2 Test method
Each door piece should be subjected to this test. Figure 3-axis riding ratio lucky lawn machine test frequency target machine piece should be adjusted 31 single height must be adjacent to the high cutting position piece will be placed on the palm mat / loose board surface specified in Figure 32 and Figure B3, which has 3mm or slightly less than 30m cut scene people cut:Each test blade is hit by 500 projectiles. The blades of multi-axis mowers are tested separately in reverse order. The results of each test are analyzed. If a test area is hit too much during the test, it must be replaced or replaced before continuing the test: to reduce the rebound impact to the maximum extent, the ball in the test device (or on the surface of the device) must be opened to eliminate the risk of test personnel and the test personnel. For each test of 5GF projectiles, a new blade should be used, except for 4 blades that are not damaged by projectiles. 2.7.3 After the completion of the lighting record
ten calculation ring record request; the number of soldiers to see the Appendix D standard attachment). Hit and hit the height line of the fertilizer area center line carefully, virtual bullet in the low this case continued target area:
2. Day has shell, light pass reverse, single guard single and fast grass energy of the fine you integrity test 2.B.1 meeting equipment
2. Day. 1. 1 Test assembly
The test assembly (see Figure 9) consists of a 1.5mm thick steel plate and a 19mm thick rubber plate. The plate should be large enough to fit the center of the tool. An air inlet hole should be set at the center of the tool tip. The maximum diameter of the hole is shown in Table 1. The maximum straightness of the air inlet hole does not interfere with the two types of knives (3TC). The knife is straight back. Design: To ensure the expansion of the range, the person standing behind the two plates at the end to prevent possible leakage, 8
reverse the air hole point
R1: :37
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