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GB/T 13875-2015: Walking tractors -- General requirement
Status: Valid GB/T 13875: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 13875-2015 | English | 209 |
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Walking tractors -- General requirement
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GB/T 13875-2015
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| GB/T 13875-2004 | English | 319 |
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General requirement of walking tractors
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GB/T 13875-2004
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| GB/T 13875-1992 | English | 239 |
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General requirement of walking tractors
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GB/T 13875-1992
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PDF similar to GB/T 13875-2015
Basic data | Standard ID | GB/T 13875-2015 (GB/T13875-2015) | | Description (Translated English) | Walking tractors -- General requirement | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | T61 | | Classification of International Standard | 65.060.10 | | Word Count Estimation | 10,176 | | Date of Issue | 2015-12-10 | | Date of Implementation | 2016-07-01 | | Older Standard (superseded by this standard) | GB/T 13875-2004 | | Quoted Standard | GB/T 1147.2; GB/T 2828.11-2008; GB/T 3871.20; GB/T 6229; GB/T 7927; GB/T 9480; GB 18447.2; GB/T 19407; GB 20891; GB/T 21959; GB/T 24645; GB/T 24648.1; JB/T 5673; JB/T 6294; JB/T 6697; JB/T 6701; JB/T 6712; JB/T 6717; JB/T 9832.2-1999; JB/T 10651; NY 2187 | | Regulation (derived from) | National Standard Announcement 2015 No.38 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the technical requirements, test methods, inspection rules, delivery, marking, transportation and storage of walking tractors. This standard applies to walking tractors (hereinafter referred to as tractors), the other by the driver walking handrail power tools can also refer to the implementation. | GB/T 13875-2015: Walking tractors -- General requirement---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Walking tractors - General requirement
ICS 65.060.10
T61
National Standards of People's Republic of China
Replace GB/T 13875-2004
General technical requirements for walking tractors
Released on.2015-12-10
2016-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Issued by the National Standardization Administration of China
General technical requirements for walking tractors
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, delivery, marking, transportation and storage of walking tractors.
This standard is applicable to walking tractors (hereinafter referred to as tractors), and other power tools whose handrails are controlled by the driver on foot can also be referred to
carried out.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 1147.2 Small and medium power internal combustion engines Part 2.Test methods
GB/T 2828.11-2008 Sampling inspection procedures by attributes Part 11.Assessment procedures for the claimed quality level of small populations
GB/T 3871.20 Agricultural Tractor Test Procedure Part 20.Bump Test
GB/T 6229 Test method for walking tractor
GB/T 7927 Vibration measurement method for walking tractors
GB/T 9480 Rules for the compilation of manuals for agricultural and forestry tractors and machinery, lawn and garden power machinery
GB 18447.2 Tractor Safety Requirements Part 2.Walking Tractor
GB/T 19407 Maximum control force of agricultural tractor control device
GB 20891 Diesel engine exhaust pollutant emission limits and measurement methods for non-road mobile machinery (China's third and fourth stages)
GB/T 21959 Technical requirements for tractor transport unit
GB/T 24645 Tractor mud-water tightness test method
GB/T 24648.1 Reliability Assessment of Tractors
JB/T 5673 General technical conditions for painting agricultural and forestry tractors and machinery
JB/T 6294 Type Inspection Rules for Agricultural Tractors
JB/T 6697 Basic technical conditions for electrical equipment of motor vehicles and internal combustion engines
JB/T 6701 Tractor headlight
JB/T 6712 Tractor appearance quality requirements
JB/T 6717 Hand Tractor Handrail Vibration Evaluation Index
JB/T 9832.2-1999 Agricultural and forestry tractors and machinery paint film adhesion performance determination method Press cutting method
JB/T 10651 walking tractor chassis
NY2187 tractor number plate setting technical requirements
3 Technical requirements
3.1 General requirements
3.1.1 Tractors should be manufactured in accordance with product drawings and technical documents approved by prescribed procedures.
3.1.2 If the parts and components on the tractor are connected with fasteners, they should be firmly connected as required, and there should be no looseness.
3.1.3 When the tractor is working normally, there should be no abnormal noise and odor in all systems, and there should be no oil leakage, water leakage, air leakage, or electricity leakage; the engine should not
Allow oil to escape.
3.1.4 The appearance quality of the tractor should meet the requirements of JB/T 6712.Tractor painting should meet the requirements of JB/T 5673, paint film adhesion
The energy should not be lower than the level II specified in JB/T 9832.2-1999.
3.1.5 Each control mechanism should be light and flexible, with moderate tightness. The itinerary of each agency shall comply with the provisions of the instruction manual. All automatic return operations
The longitudinal parts shall be able to reset automatically after the control force is removed. The non-auto-returning manipulator should be able to stop reliably in the maneuvering position. The most of each control device
The large control force should meet the requirements of GB/T 19407.
3.1.6 The gearbox should be free of disorderly gears and automatic de-gearing.
3.1.7 The engine should be able to operate stably within the full speed regulation range, and be able to stop the engine directly or indirectly through the flameout device.
3.1.8 The drive belt groove of the engine pulley and the transmission belt groove of the clutch pulley should be aligned, and the tension of each transmission belt should be moderate, and basically the same.
It should be able to reliably transmit the full torque of the engine.
3.1.9 The clutch should be able to separate completely and engage smoothly, and should be able to transmit the full torque of the engine when engaged.
3.1.10 The steering mechanism should be able to ensure flexible and reliable steering of the tractor.
3.1.11 The lifting and lowering of the tail wheel should be able to rotate flexibly, and there should be no jamming phenomenon or self-rotation phenomenon during travel.
3.1.12 The electrical instrument installed on the tractor should meet the requirements of JB/T 6697, and the instrument display should be clear and accurate. Headlamps should meet
The provisions of JB/T 6701.The signal, alarm system, electrical, lighting and various switches should work reliably.
3.1.13 During the running-in operation and performance test, the sealing surfaces and pipe joints should be free of leakage after adjusting the fasteners twice.
3.1.14 After the muddy water test, the tractor shall not allow muddy water to penetrate into the body. Tractors for paddy fields and wetlands shall comply with the provisions of GB/T 24645
Assess muddy water resistance.
3.1.15 The height of the tractor traction device from the ground is 330mm~390mm, and the structure size can be specified by the manufacturer.
3.1.16 Tractors with engine rated power greater than 4kW shall have a braking device.
3.1.17 The tractor instruction manual should meet the requirements of GB/T 9480.
3.1.18 The tractor chassis without power can be regarded as the complete machine according to JB/T 10651.After supporting the power specified in the manual, it should meet the requirements of this
Standard requirements.
3.1.19 When the tractor transport unit is carrying out transportation operations, it should comply with the requirements of GB/T 21959.
3.2 Safety and environmental protection requirements
3.2.1 The safety and environmental protection requirements of tractors should meet the requirements of GB 18447.2.
3.2.2 The engine of the tractor should have a label that meets the requirements of GB 20891.
3.3 Main performance requirements
3.3.1 Performance of PTO shaft
3.3.1.1 At the calibrated speed of the engine, the maximum power of the PTO shaft should not be less than 95% of the value specified by the company, and the value specified by the company should not be less than 95% of the value specified by the company.
Less than 0.85 times of the engine's rated power (12h).
3.3.1.2 The variable load average fuel consumption rate of the power output shaft should not be greater than 370g/(kW·h).
3.3.1.3 The torque reserve rate of the power output shaft shall not be less than 12%.
3.3.1.4 The ratio of the speed at the maximum torque point of the PTO shaft to the speed at the maximum power point of the PTO shaft (under the calibrated engine speed) should not be large.
Less than 80%.
3.3.2 Engine performance of tractors without rear PTO shaft
3.3.2.1 Engine rated power (12h). at the rated speed, not less than 95% of the value indicated on the engine's label.
3.3.2.2 For the engine bench test, the variable load average fuel consumption rate is not more than 310g/(kW·h).
3.3.2.3 For the engine bench test, the engine torque reserve rate should not be less than 12%.
3.3.2.4 In the engine bench test, the ratio of the engine speed at the maximum torque point to the maximum power point speed is not more than 80%.
3.3.3 Traction performance
3.3.3.1 The maximum traction of the tractor shall not be less than the value specified by the enterprise.
3.3.3.2 The traction specific fuel consumption under the maximum traction power condition of the main ploughing operation.
a) For tractors with a calibrated power of not more than 4kW, the traction specific fuel consumption is not more than 585g/(kW·h);
b) For tractors with a calibrated power greater than 4kW but not greater than 7kW, the traction specific fuel consumption is not greater than 485g/(kW·h);
c) For a passenger (riding) tractor with a calibrated power greater than 7kW, the traction specific fuel consumption is not greater than 360g/(kW·h);
d) For a dual-purpose (walking) tractor with a calibrated power greater than 7kW, the traction specific fuel consumption is not greater than 425g/(kW·h).
3.3.4 Starting performance
The tractor should be able to start smoothly when the ambient temperature is 0°C.
3.3.5 High temperature performance
The high temperature performance test is performed at an ambient temperature of 40°C, the engine coolant temperature should be lower than 100°C, and the evaporative cooling model does not
Check the cooling water temperature. The lubricating oil temperature, transmission box oil temperature, and engine exhaust temperature should not be higher than the highest limit set by the company.
3.3.6 Vibration index of the handrail
The vibration index of the tractor handlebar shall comply with the regulations of JB/T 6717.
3.3.7 Structure ratio quality
The structural ratio of the tractor mass.
a) For tractors with a calibrated power not greater than 4kW, the structural specific mass should not be greater than 58kg/kW;
b) For tractors with a calibrated power greater than 4kW but not greater than 7kW, the structural specific mass should not be greater than 55kg/kW;
c) For a passenger (riding) tractor with a rated power greater than 7kW, the structural specific mass is not greater than 55kg/kW;
d) For dual-use (walking) tractors with a rated power greater than 7kW, the structural specific mass is not greater than 50kg/kW.
Note. For special tractors with special structures, the structural ratio and quality will not be assessed.
3.3.8 Reliability
The mean time between failures (MTBF) of the reliability test of tractor products should not be less than 210h; the comprehensive score (Q) of the failure-free performance should not be less than 210h.
Less than 70 points.
3.3.9 Anti-bump performance
After the tractor passes the bump test specified in GB/T 3871.20, it should still be able to meet the requirements for use.
4 Test method
4.1 The appearance and assembly quality of the tractor shall be inspected by visual inspection and measuring tools.
4.2 The paint film adhesion test of tractor covering parts is in accordance with the regulations of JB/T 9832.2-1999.
4.3 The tractor performance test shall be in accordance with the provisions of GB/T 6229.
4.4 The detection method of headlamps shall comply with the regulations of JB/T 6701.
4.5 The engine bench test shall be in accordance with the provisions of GB/T 1147.2.
4.6 The vibration measurement of the tractor handlebar shall be in accordance with the regulations of GB/T 7927.
4.7 The muddy water tightness test of the tractor shall be in accordance with the provisions of GB/T 24645.
4.8 The tractor reliability test shall be in accordance with the provisions of GB/T 24648.1.
4.9 The test of tractor safety and environmental protection items shall be in accordance with the provisions of GB 18447.2.
4.10 The bump test should be in accordance with the provisions of GB/T 3871.20.
5 Inspection rules
5.1 Factory inspection
5.1.1 Each tractor should undergo a factory inspection before leaving the factory to check whether the tractor's manufacturing, assembly quality and main technical indicators are
Meet the requirements of product standards.
5.1.2 The items of factory inspection are shown in Table 1.
Table 1
5.1.3 All items in the factory inspection can be judged as qualified.
5.2 Type inspection
5.2.1 Timing of type inspection
Type inspection should be carried out in one of the following situations.
a) When the newly developed tractor is finalized and appraised;
b) After formal production, when the structure, principle, and important components have been greatly changed to improve the design;
c) After formal production, every 5 years;
d) When production resumes 6 months after the product has been discontinued;
e) When there is a big difference between the factory inspection results and the last type inspection;
f) When the national quality supervision agency proposes to carry out type inspection.
5.2.2 Inspection items
5.2.2.1 The tractor type inspection that falls under 5.2.1a) shall carry out all the performance tests of the whole machine, the use test of the whole machine and the bump test, or
Replace the use test of the whole machine with the durability test of the component bench and the reliability test of the whole machine.
If it belongs to the tractor series design, all models of power value should be tested for the performance of the whole machine. For the inspection items, see JB/T 6294.can
For other test items such as reliability and use test, only the test of the maximum power value model can be carried out.
Note 1.The tractor series design refers to the design of a group of tractor models that adopts a chassis (transmission system), other systems are optional, and consists of several models.
In total, all models use a serial number.
Note 2.After replacing engines with different powers, the inspection items for which the tractor performance parameters have not changed can be quoted from the same series and matched with other power engines.
The results of inspection data of the tractor models.
5.2.2.2 The type inspection of the tractor belonging to 5.2.1b) shall be carried out all the performance tests of the whole machine, and the durability of the bench of the major improved components
Test or machine reliability test.
5.2.2.3 For tractors belonging to 5.2.1c), d), e), and f), the type inspection shall be carried out in accordance with the provisions of Table 1.
5.2.3 Classification of nonconformities
When the inspected item does not meet the requirements specified in Chapter 3, it is called a non-conforming item. According to the degree of influence of the non-conforming item on the quality of the product, it is divided into
Class A disqualification, B disqualification, C disqualification, and D disqualification. The unqualified classification is shown in Table 1.
5.2.4 Sampling plan
5.2.4.1 Established in accordance with Table B.1 in GB/T 2828.11-2008, see Table 2.
5.2.4.2 In addition to test prototypes, spare prototypes can be provided or selected according to needs. The spare prototypes are only used when the quality of the prototype is not caused by the quality problem.
Enabled during normal inspection.
5.2.5 Judgment rules
5.2.5.1 The tractor type inspection items belonging to the conditions a) and b) in 5.2.1 should all meet the requirements, and the reliability and bump tests should meet the requirements respectively.
If it meets the requirements of 3.3.8 and 3.3.9, it is finally judged as qualified; otherwise, it is finally judged as unqualified.
5.2.5.2 Tractors belonging to conditions c), d), e), and f) in 5.2.1 shall be judged according to the sampling plan in Table 2.According to Table 1 to sample each type
The inspection items are inspected and judged. When the number of unqualified items in categories A, B, C, and D does not exceed 0, 1, 2, and 2, respectively, the sample is determined to be qualified; no
The sample is judged to be unqualified.
5.2.5.3 During the entire performance inspection period, if a serious failure, fatal failure or 2 general failures occur due to product quality problems, the inspection should be stopped.
After testing, the product shall be treated as unqualified.
6 delivery
6.1 Each tractor shall be inspected and qualified by the enterprise and issued a certificate before leaving the factory.
6.2 The following work should be done before the tractor leaves the factory.
a) Drain the fuel and cooling water (do not put antifreeze), and the exhaust pipe with the upward opening should have measures to prevent rainwater from entering;
b) Check and adjust the tire pressure to the value specified by the company, and the tire should not be filled with liquid;
c) It is stipulated that lead seals should be added to lead seals;
d) The battery should be dry without electrolyte (except for maintenance-free batteries);
e) If structurally possible, hydraulic pumps and other accessories should be placed in a separated state;
f) Before shipment, lubrication parts should be filled with or supplemented with lubricating oil or grease according to regulations.
Note. If the user has special requirements for the delivery status of the tractor, it can be resolved through consultation with the enterprise.
6.3 In addition to the accessories provided according to special orders, each tractor shipped from the factory should be equipped with a complete set of spare parts and accessories in accordance with the provisions of the product technical documents.
Pieces and tools in the car.
6.4 For each tractor shipped with the factory, the enterprise shall provide the following documents.
a) Instructions for use;
b) Parts catalog;
c) Certificate of conformity and warranty;
d) A list of spare parts, accessories and tools;
e) Packing list.
7 Marking, transportation and storage
7.1 A trademark or company logo that can be permanently maintained should be installed on the visible part of the outer surface of the tractor body.
The mark of the model that can be identified should be installed on the spot. The number plate holder of the tractor shall comply with the regulations of NY2187.
7.2 The tractor shall be equipped with a product label that can be permanently maintained. The sign should contain at least the following content.
a) Tractor model and name;
b) Engine rated power (12h);
c) Factory number and year and month;
d) The name and address of the company;
e) Product implementation standard number.
7.3 The loading and transportation of the tractor shall ensure that the tractor (including spare parts, accessories and tools) will not be damaged or lost during normal transportation.
phenomenon.
7.4 Under dry and ventilated storage conditions, the anti-rust period of the tractor and its spare parts, accessories and vehicle tools is valid from the date of leaving the factory.
12 months.
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