JB/T 7236—2001 This standard is a revision of JB/T 7236—1994 "Technical Conditions for Three-wheeled Agricultural Transport Vehicles". Safety requirements were added during the revision; inspection rules were refined; reliability indicators and other indicators and regulations were added. This standard specifies the technical requirements, test methods, inspection rules, delivery, marking, transportation and storage of three-wheeled agricultural transport vehicles. This standard applies to three-wheeled agricultural transport vehicles. This standard was first issued in July 1994, and this is the first revision. JB/T 7236-2001 Technical Conditions for Three-wheeled Agricultural Transport Vehicles JB/T7236-2001 Standard download decompression password: www.bzxz.net

ICS43.160
Machinery Industry Standard of the People's Republic of China
JB/T7236-2001
Three-wheel agricultural vehicles—Specifications
Promulgated on 2001-06-04bzxZ.net
China Machinery Industry Federation
Implementation on 2001-10-01
JB/T7236—2001
This standard is a revision of B/T7236-1994 "Technical Conditions for Three-wheel Agricultural Vehicles". Compared with JB/T7236-1994, the main technical content of this standard has been changed as follows: it is mainly based on the requirements for the quality of the whole vehicle, and the relevant chapters on components in the original standard have been cancelled; - the maximum design total mass, maximum design speed and external dimensions of three-wheeled agricultural transport vehicles are given - the provisions of safety requirements are added;
- the requirements for models with a maximum design speed greater than 40km/h are added; - the reliability index is added;
- the inspection rules are detailed.
This standard replaces JB/T7236-1994 from the date of implementation. This standard is proposed and managed by the National Agricultural Transport Vehicle Standardization Technical Committee. The drafting units of this standard are: Shandong Agricultural Machinery Science Research Institute, Shandong Juli Co., Ltd., Shandong Huayuan Guangming Machinery Manufacturing Co., Ltd., Shandong Shuangli Group Co., Ltd., Anhui Feicai (Group) Co., Ltd. The main drafters of this standard are: Wang Dongyue, Han Hongmei, Yue Chunqing, Ji Shaokun, Zhang Junqiang, Chi Xiangli. This standard was first issued in July 1994 and revised for the first time in June 2001. 1 Scope
Machinery Industry Standard of the People's Republic of China
Three-wheeled agricultural vehicles
Technical conditions
Three-wheeled agricultural vehicles—Specifications JB/T7236—2001
Replaces JB/T7236—1994
This standard specifies the technical requirements, test methods, inspection rules, delivery, marking, transportation and storage of three-wheeled agricultural vehicles. This standard applies to three-wheeled agricultural vehicles (hereinafter referred to as three-wheeled vehicles). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards: GB/T2828—1987
GB 7454—1987
GB/T 15705—1995
GB 18320—2001
GB 18321—2001
JB/T6712—1993
JB/T 7237—1994
JB/T98322—1999
JB/T 50096—1997
3 Technical requirements
3.1 General requirements
Batch inspection Count sampling procedures and sampling tables (applicable to continuous batch inspection) Technical regulations for the use and beam adjustment of motor vehicle headlights Dimensions of the driver's operating position of trucks
Safety technical requirements for agricultural transport vehicles
Noise limits for agricultural transport vehicles
Appearance quality requirements for tractors
Test methods for three-wheeled agricultural transport vehicles
Determination methods for paint film adhesion performance of agricultural and forestry tractors and machinery Press cutting method Reliability assessment and evaluation methods for three-wheeled agricultural transport vehicles 3.1.1 Three-wheeled vehicles shall be manufactured in accordance with product drawings and technical documents approved through prescribed procedures 3.1.2 The parts and accessories of three-wheeled vehicles shall comply with the provisions of relevant standards or technical documents, and may only be assembled after passing the inspection. 3 All parts connected by fasteners of three-wheeled vehicles shall be connected reliably as required and shall not be loose. 3.1.3
The tightening torque of fasteners in important parts shall comply with the provisions of the product drawings or instruction manual. 3.1.4 The appearance of the tricycle should be neat and tidy, the layout should be reasonable, and all parts should be free of defects. The body should be round, and the height difference between the left and right symmetrical parts of the outer edge of the body should not be greater than 40mm. The appearance quality of the paint, castings, forgings, welded parts, metal plating, etc. of the tricycle should comply with the provisions of JB/T6712. 5 The minimum ground clearance of the tricycle should be greater than or equal to 160mm. 3.1.5
5 The tricycle should not have oil or water leakage, and mud and water should not penetrate into the body. 3.1.7 The engine, transmission system and other parts of the tricycle should not make abnormal noises during operation and driving. 3.1.8 A tricycle with a steering handle or a central steering wheel is allowed to carry one driver; a tricycle with a left-hand steering wheel is allowed to carry one person in addition to the driver.
9 The specific power of a tricycle shall not be less than 4.0kW/t. 3.1.9
China Machinery Industry Federation approved 2001-1001 implementation on June 4, 2001
JB/T7236-2001
3.1.10 The clutch pedal of a tricycle must be placed in a position that is convenient for the driver's left foot to operate. The clutch should engage smoothly and disengage completely. The free travel of the clutch pedal is 20~40mm, and the maximum operating force of the pedal should not exceed 250N. 3.1.11 The free travel of the service brake pedal of a tricycle is 20~40mm. In emergency braking, the pedal force should not exceed 700N; the operating force of the parking brake operating device should not exceed 400N. 3.1.12 When an unloaded tricycle is driving in a straight line at a speed of 25km/h ± 0.5km/h, the torque acting on the steering device is: the steering handle type is not more than 8N·m, and the steering wheel type is not more than 4N·m. 3.1.13 When an unloaded tricycle is driving at a speed of 10kmh ± 0.5km/h and the front wheel turns 180° along a circle with a diameter of 9m, the torque applied to the steering device is: the steering handle type is not more than 60N·m, and the steering wheel type is not more than 40N·m. 3.1.14 The dimensions of the driver's control position for a steering wheel tricycle refer to the provisions of GB/T15705. 3.1.15 The dimensions of the driver's control position for a handlebar tricycle shall be in accordance with the provisions of Figure 1 and Table 1. Figure 1
7236—2001
Seat cushion surface to ceiling height (measured at A100mm in front of the backrest)Distance from handlebar to backrest
Distance from handlebar to upper surface of seat cushion
Horizontal distance from center of brake and clutch pedals to backrest (the larger value is taken when the value of dimension ④ is smaller)
Front-to-back distance between center of brake and accelerator pedalStroke of brake and clutch pedal
Distance from upper surface of seat cushion to bottom plate
Distance from center of clutch pedal to symmetrical center plane of frameDistance from center of brake pedal to symmetrical center plane of frameLateral distance between brake and accelerator pedals
Distance from center of brake pedal to flywheel cover
The fully enclosed cab shall not leak water.
≥960
450~600
220~320
630~730
≤150
40-550
20~280
20~280
60-130
The steering device of a tricycle should be flexible, easy to operate and free of obstruction. During the steering process of the wheels, there should be no interference with other parts. 3.1.17
The tricycle should not deviate when driving on a flat, hard, dry and clean road, and its steering device should not have shimmy, poor road feel or other abnormal phenomena.
3.1.18 The tire model and pattern on the same axle should be the same and should be adapted to the maximum design speed. The tire load should not exceed the rated load of the tire.
The tricycle should be equipped with a generator with a power of not less than 150W, and its technical performance should be good. Safety requirements
3.2.1 External dimensions, maximum design speed and maximum design total mass shall comply with the provisions of 3.2 in GB18320-2001
The external dimensions, maximum design speed and maximum design total mass of the tricycle shall comply with the provisions of B2 Cab interior space
The safety requirements of the cab interior space shall comply with the provisions of 5.2.1 in GB18320-2001 3 Seats
Driver's seat The safety requirements of the steering wheel (steering handle) shall comply with the provisions of 5.2.2 in GB18320-2001. 4 Steering wheel (steering handle)
The safety requirements of the steering wheel (steering handle) shall comply with the provisions of 5.2.3 in GB18320-2001. 3.2.5
5 Operating mechanism
The safety requirements of the operating mechanism shall comply with the provisions of 5.2.4 in GB18320-2001. 5 Access to and from the cab
Access to and from the cab shall comply with the provisions of 5.2.5 in GB18320-2001. 3
3.2.7 Doors and Windows
JB/T7236-2001
The safety requirements for doors and windows shall comply with the provisions of 5.2.6 of GB18320-2001. 3.2.8 Cabin Interior Materials
Cabiner Interior Materials shall comply with the provisions of 5.2.7 of GB18320-2001. 3.2.9 Vehicle Stability
3.2.9.1 The rear overhang shall comply with the provisions of 5.3.1 of GB18320-2001. 3.2.9.2 The bearing mass of the steering wheel shall comply with the provisions of 5.3.2 of GB18320-2001. The roll stability angle shall comply with the provisions of 5.3.3 of GB18320-2001. 3.2.9.3
3.2.10 Starting switch and throttle control mechanism The starting switch and throttle control mechanism shall comply with the provisions of 5.4.1 of GB18320-2001. 3.2.11 Steering system
3.2.11.1 The position of the steering wheel (handlebar) shall comply with the provisions of 5.4.2.1 of GB18320-2001. 3.2.11.2 The maximum free rotation of the steering wheel (handlebar) shall comply with the provisions of 5.4.2.2 of GB18320-2001. 3.2.11.3 The steering limit device shall comply with the provisions of 5.4.2.3 of GB18320-2001. 3.2.11.4 The left or right turning angle of the steering wheel shall comply with the provisions of 5.4.2.4 of GB18320-2001. 3.2.12 Braking system
The driving and parking brake systems shall comply with the provisions of 5.4.3.1 of GB18320-2001. 3.2.12.1 Driving brake performance
The driving brake performance under the specified test conditions shall comply with the provisions of 5.4.3.4 of GB18320-2001. 3.2.12.2 Parking brake performance
The parking brake performance under the specified test conditions shall comply with the provisions of 5.4.3.5 of GB18320-2001. 3.2.13 Traveling system
The safety requirements of the traveling system shall comply with the provisions of 5.4.4 of GB18320-2001. 3.2.14 Transmission system
The safety requirements of the transmission system shall comply with the provisions of 5.4.5.2 and 5.4.5.3 of GB18320-2001. 3.2.15 Self-unloading device
The safety requirements of self-unloading device shall comply with the provisions of 5.4.6 of GB18320-2001. 3.2.16 Lighting signal device and other electrical equipment 3.2.16.1 The lights of tricycles shall be installed securely, intact and effective, and shall not become loose, damaged, lose their function or change the direction of light due to the vibration of the vehicle. All light switches shall be installed securely, open and close freely, and shall not open and close automatically due to the vibration of the vehicle. The switch position shall be convenient for the driver to operate.
3.2.16.2 The requirements for the number, light colour and other aspects of the external lighting and signalling devices of tricycles are shown in Table 2. 4
3.2. 16. 3
Name of lighting and signalling devices
Headlamp
Front position lamp
Rear position lamp
Front turn signal lamp
Rear turn signal lamp
Brake lamp
License plate lamp
Rear reflector
7236—2001
At least 1
Amber
The luminous intensity of the high beam of each headlamp of a tricycle shall comply with the provisions of 5.5.2 of GB 18320-2001. The configuration requirements for the high and low beam of headlamps shall comply with the provisions of 5.5.3 of GB 18320-2001. 3.2.16.5 The requirements for turn signal lamps shall comply with the provisions of 5.5.4 of GB18320-2001. 3.2.16.6 The brightness of instrument lamps shall comply with the provisions of 5.5.6 of GB18320-2001. 3.2.16.7 The requirements for the opening and closing and lighting of front position lamps, rear position lamps, license plate lamps and instrument lamps shall comply with the provisions of 5.5.7 of GB18320-2001. 3.2.16.8 The brightness of turn signal lamps, brake lamps, rear position lamps and rear license plate lamps shall comply with the provisions of 5.5.8 of GB18320-2001. The horn shall comply with the provisions of 5.5.9 of GB18320-2001. 3.2. 16. 9
3.2.16.10
The instruments and meters shall comply with the provisions of 5.5.10 of GB18320-2001. 3.2.17
Safety protection
3.2.17.1 Rearview mirrors shall comply with the provisions of 5.6.1 of GB18320-2001. 3. 2. 17. 2
3. 2. 17. 3
3. 2. 17. 4
Front windshield wipers shall comply with the provisions of 5.62 of GB18320-2001. All wheels of tricycles shall have mudguards. Protection of dangerous moving parts shall comply with the provisions of 5.66 of GB18320-2001. Requirements for safety protection devices and safety distances shall comply with the provisions of 5.6.8 of GB18320-2001. 3.2.17.5
Hydraulic, fuel and lubrication systems
Safety requirements for hydraulic, fuel and lubrication systems shall comply with the provisions of 5.7 of GB18320-2001. 3.2.19 Thermal protection
Thermal protection shall meet the requirements of 5.8 of GB18320-2001. 3.2.20
Electrical requirements
3.2.20.1 The installation and protection of batteries shall comply with the provisions of 5.9.1 of GB18320-2001. 3.2.20.2 The protection of electrical wires shall comply with the provisions of 5.9.2 of GB18320-2001. 3.2.20.3 The overload protection of circuits shall comply with the provisions of 5.9.3 of GB18320-2001. 3.3 Usage information
The factory logo or trademark and model logo of tricycles shall comply with the provisions of 7.1.1 of GB18320-2001. 3.3.2
2 The installation and content of product labels shall comply with the provisions of 7.1.2 of GB18320-2001. 5
JB/T7236—2001
3.3.3 The frame number or vehicle identification code shall comply with the provisions of 7.1.3 of GB18320—2001. 3.3.4 The license plate (frame) shall comply with the provisions of 7.1.4 of GB18320—2001. 3.3.5 The graphic signs of the control parts, indicators and signal devices shall comply with the provisions of 7.2 of GB18320—2001. 3.3.6 The safety signs of tricycles shall comply with the provisions of 7.3 of GB18320—2001. 3.3.7 The instruction manual shall comply with the provisions of 7.4 of GB18320-2001. The instructions must give the safety precautions, safety signs and their locations, product label locations and frame number locations. 3.4 Main performance requirements
3.4.1 The rated power of the tricycle engine shall be 1h power. After the tricycle is run-in as required, the rated power shall comply with the provisions of the instruction manual, with a tolerance of ±5%.
3.4.2 The lowest stable speed of the tricycle in the highest gear shall not exceed 40% of the maximum design speed. 3.4.3 The maximum slope that a tricycle can climb shall be greater than or equal to 20%. 3.4.4 When the tricycle is fully loaded, the distance for accelerating from 15km/h to 30km/h shall not exceed 120m. 3.4.5 When the tricycle is fully loaded and glides out of gear on a flat, dry concrete or asphalt road, the straight-line gliding distance at an initial speed of 30km/h shall not be less than 165m.
3.4.6 The road fuel consumption rate of a fully loaded tricycle (based on the maximum design gross mass) shall not exceed 2.8L/(t·100km). 3.4.7 The tricycle shall be started three times at an ambient temperature of 5°C or higher and meet the following requirements, and two starts shall be successful: a) manual start, each start time is less than or equal to 15s b) electric start, each start time is less than or equal to 30s. 3.4.8 The minimum turning circle diameter of the tricycle shall not be greater than 9m. 3.4.9 The dump truck compartment shall be able to rise, fall or stop at any position smoothly, and the maximum inclination angle shall not be less than 45°. When the engine is running at the rated speed, the time for the fully loaded compartment to be lifted to the maximum inclination angle (without unloading) shall not be greater than 20s. When overloaded by 10%, it shall stay for 5min when lifted to 20°, and the self-lowering amount of the compartment shall not be greater than 5%. The dump truck compartment shall be able to return to its position accurately after being lifted.
3.5 Environmental protection requirements
3.5.1 The noise of the tricycle shall comply with the provisions of GB18321. 3.5.2 The exhaust of tricycles shall comply with the provisions of 5.11 of GB183202001. 3.6 Reliability
3.6.1 The mileage of the reliability test of tricycles shall be in accordance with the provisions of Table 3. The fatal faults (Class I) specified in B/T50096 shall not occur during the test.
Maximum speed
Reliability test mileage
≤ 30
>30-40
>40~50
Note: If the variant vehicle meets the reliability test report of the basic vehicle model recognized by the testing department, the reliability mileage can be 5000m3.6.2 The mean failure-free mileage (MTBF) of tricycles shall not be less than 2000km. 3.6.3 The comprehensive score value (o) of tricycles without faults shall not be less than 65 points. 3.6.4 The braking performance and environmental pollution value of the vehicle after the reliability test shall meet the national quality indicators for in-use vehicles. 6
4 Test method
JB/T7236—2001
4.1 The dimensions and mass parameters, power performance, engine rated power, fuel economy, sliding performance, handling performance, braking performance, starting performance, dump truck dump performance, noise and cab sealing of tricycles shall be inspected in accordance with the provisions of JB/T7237. 4.2 The inspection of headlights shall be carried out in accordance with the provisions of GB7454. 4.3 The inspection of oil leakage shall be carried out after the tricycle has driven continuously for not less than 10km and stopped for 5 minutes. There shall be no obvious leakage. The inspection of water leakage shall be carried out when the engine is running or stopped. There shall be no obvious water leakage in the water tank, water pump, cylinder block, cylinder head, heating device and all connecting parts.
4.4 The appearance quality of tricycles shall be inspected by visual inspection, and the adhesion performance of paint film shall be inspected in accordance with the provisions of .B/T9832.2. 4.5 The inspection of the safety items of tricycles shall be carried out in accordance with the provisions of Chapter 6 of GB18320-2001. 4.6 The reliability test of tricycles shall be carried out in accordance with the provisions of JB/T50096 or other relevant provisions. 4.7 Other items shall be inspected by visual inspection or other conventional methods. 5 Inspection rules
The inspection types of tricycles are divided into factory inspection and type inspection. 5.1 Factory inspection
5.1.1 Each tricycle must pass the inspection before it can leave the factory, and it must be accompanied by documents or marks proving the quality of the product. 5.1.2 The factory inspection of tricycles shall at least fully check the items with "√" in Table 4. All items must be qualified before the certificate of conformity can be issued for shipment.
5.2 Type inspection
5.2.1 The manufacturer shall conduct type inspection in any of the following situations: a) Finalization and appraisal of new products;
b) Trial finalization and appraisal of old products produced in different places or transferred to other factories: After formal production, if there are major changes in structure, materials and processes, which may affect product quality; ①) When the product is discontinued for more than one year and production is resumed; e) When the factory inspection result is significantly different from the last type inspection result: ) Quality monitoring under normal production conditions (reliability test should be conducted at least once every three years, and inspection of other items should be conducted at least once a year).
5.2.2 Inspection items
The inspection items are all the test items listed in this standard, see Table 4. For type inspection of a) type, two prototypes are required, and one of the prototypes is inspected for performance and assembly quality, and then reliability test is conducted together with the other prototype. For type inspection of b)~e) types, two prototypes are required, and both are tested for performance, assembly quality and reliability. f) Type inspection requires two prototypes, and both prototypes are subject to performance, assembly quality and/or reliability tests at specified intervals.
5.2.3 Classification of nonconformities
Any inspected item that does not meet the requirements specified in Chapter 3 is called a nonconformity (defect). According to the importance of its impact on product quality characteristics, it is divided into Class A nonconformity, Class B nonconformity and Class C nonconformity. The names of each item are shown in Table 4. Nonconformity of Class A items is called Class A nonconformity, and the rest is analogous.
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