Some standard content:
ICS 65. 060. 10
National Standard of the People's Republic of China
GB/T4330--2003
Replaces GR/T4330-1984
Agricultural trailer
Agricultural trailer
Promulgated on 2003-10-29
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Implementation on 2004-05-01
GB/T4330—2003
This standard replaces GR/T4330—1984 Agricultural trailer. Compared with GB/T4330-1984, the main technical content of this standard has been changed as follows: safety technical requirements have been added, and it is consistent with the relevant provisions of GB72581997: - the technical requirements on the size and materials of the main parts have been deleted - the acceptance rules, marking, packaging, transportation and storage have been added - the content of general technical requirements has been adjusted. This standard is proposed by the China Machinery Industry Federation and is under the jurisdiction of the National Agricultural Machinery Standardization Technical Committee. The drafting units of this standard are: China Agricultural Mechanization Research Institute, National Agricultural Machinery Quality Supervision and Inspection Center, Jiangnan Transportation Machinery Co., Ltd.
The main drafters of this standard are: Jin Suofang, Wu Haoran, Yu Jianming, Wu Li. The previous versions of the standards replaced by this standard are as follows: ----- GB/T 4330—1977, GR/T 4330—1984. 1 Scope
Agricultural trailers
GB/T4330—2003
This standard specifies the type, basic parameters, technical conditions, safety requirements, acceptance regulations, inspection and packaging of agricultural trailers. This standard applies to 0.5t9t agricultural trailers towed by walk-behind tractors and wheeled tractors (hereinafter referred to as trailers). 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For dated references, all subsequent references (excluding errata) or revisions are not applicable to this standard: However, the departments that cooperate with this standard are encouraged to study whether the latest versions of these documents can be used. For all undated references, the latest versions shall apply to this standard. GB/T1359—1978 Types and dimensions of air brake joints for vehicles and trailers GB/T2828-[987 Sampling procedures and sampling tables for batch inspection by counting (applicable to inspection of continuous batches) GB/T3098.1—2000 Mechanical properties of fasteners Bolts, screws and studs (idtIS(）898-1:1999) Mechanical properties of fasteners Nuts coarse thread (idtIS0898-2:1992) GB/T 3098.2-.--2000
GB/T4331—2003 Test methods for agricultural trailers GR 4785—1998
Installation regulations for external lighting and signal devices of vehicles and trailers G3 7258---1997
Technical conditions for safe operation of motor vehicles
G3 10396—1999
(cqv1S011684：1995)
General rules for safety signs and hazard graphics for agricultural and forestry tractors and machinery, lawn and gardening power machinery GB/T 13306—1991
JB/T56731991 Technical conditions for painting of agricultural and forestry tractors and machinery IB/F7283—2001 Agricultural machinery leaf spring JB/T9832.21999 Agricultural and forestry tractors. And machinery. Determination method of paint film adhesion performance. Compression cutting method 3 Types and basic parameters
3.1 Classification of trailers
The connection structure is divided into two types: semi-trailer and trailer. The connection function is divided into two types: self-driving and non-dumping trailers. 3.2 The basic parameters and dimensions of semi-trailers shall comply with the requirements of Table 1. 3.3 The basic parameters and dimensions of full trailers shall comply with the provisions of Table 2. 3.4 The specifications and dimensions of the carriages shall comply with the provisions of Table 3. 3.5 The main dimensions of the towing part of the semitrailer towed by a tractor shall comply with the provisions of Table 4. 4 Technical conditions
4.1 General technical requirements
4.1.1 The trailer shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.1.2 All parts and components must be inspected and qualified before they can be assembled. GB/T 4330--2003
Load capacity/t
Trailer compartment specifications/m
Full load load bearing capacity
Bearing capacity/kg
Lower edge height/mm
Braking system type
Driving direction, type, tilt angle
Frame type
Diameter of towing ring/mm
Load capacity
Recommended vehicle specifications/m
Rear end of towing bar when fully loaded/mm
Braking system type
Dumping direction, type,
Tilt angle
Suspension type
Transfer type
Diameter of towing ring? tnm
Air pressure or foot
Hydraulic brake
Table 1 Basic parameters and dimensions of semi-trailer
50~~100
360±30
Foot mechanical brake
Backward, mechanical
1, 4;,1, 8
Air pressure or foot hydraulic brake
No suspension or leaf spring elasticity. The elasticity of the leaf spring should comply with the requirements of JB/T 7283
360±75
Air pressure brake
Backward, drip lift
The elasticity of the leaf spring should comply with JB/T 7283 requirements
Table 2 Basic parameters and dimensions of full trailer
Line: 650
Air brake
Air brake (in accordance with the provisions of 6.10 in GB 7258-1997)) Three-way tipping forward or backward or sideways and rearward, hydraulic lift, sideways or rearward tipping angle 3 45°, the side interval tipping angle of three-way tipping is not greater than 75″, and the rear tipping angle is not less than 40°. Steel plate spring elastic frame. In accordance with the requirements of IB/T7283, axle steering, steel ball type shaftless turntable
4.1.3 The reliability of the trailer shall comply with the requirements specified in Table 5. 4.1.4 The air brake joint shall comply with GB/T 1359. 4.1.5 For the brake system pipeline of the trailer with pneumatic brake, the air source shall be cut off after the air is inflated to 0.5MPa. The air pressure of the brake system pipeline shall not drop by more than 0.5MPa within 15min after the air is inflated; the air pressure of the brake system arm pipeline shall not drop by more than 0.1MPa within 15min after the air is cut off. When inflating and deflating, the camshaft, brake arm and air chamber push rod shall move flexibly and return quickly. There shall be no oil seepage or leakage in the hydraulic brake system. 3
Carriage specifications/m
Carriage floor area (length × width)/m
Basic car height/m
Carriage specifications/m\
Carriage floor area (length × width)/m
Basic car height/m1
Carriage specifications and dimensions
1. 45×0. 801. 60 ×0. 9011. 80 ×1. 002. 0c×1. 002. 20X1. 102. 50×1. 50 3. 00×1. 600.35
3.80×1.904.00×2,004.10×2.101.30×2.203.40X1.8c
4.50X2.33
5,60×2.30
Hand tractor specifications/kw
2. 21 -~ 8. 82
Assessment items
Table 4 Main dimensions of the drawbar part of the semi-trailer towed by a walking tractor H
365-30
Average first fault-clearing distance/km
Average time between faults/km
Table 5 Trailer reliability
Unit type
Wheel tractor locomotive unit
Wheel bottle locomotive unit
Wheel bottle locomotive unit||tt ||Hand-held slatted sail locomotive group
GB/T4330—2003
Unit is mm
1700=100
Specified index
2:3000
4.1.6 Under the working pressure of the hydraulic device of the matching tractor, the hydraulic dump trailer should raise the empty carriage for 2 minutes, and then lower it for another 2 minutes. After raising and lowering it three times, there should be no oil seepage or leakage. When dumping, the carriage should rise and fall flexibly and return to the position accurately, the hydraulic cylinder should rise and fall smoothly, and there should be no obvious oil drops on the surface of the trailer. 4.1.7 The steering of the trailer should be flexible, and there should be no abnormal friction when turning left or right 90°. The tangential pull at the towing ring when the trailer is unloaded: single tire is not more than 400 N. Dual tire is not more than 600 N. 4.1.8 The wheels should rotate flexibly, and there should be no abnormal friction or looseness. 4.1.9 The surface painting should comply with the provisions of JB/T5673. Apply primer before applying topcoat. Quality requirements for decorative surface paint: paint leakage is allowed: paint peeling of no more than 2cm area is less than or equal to 2 places: wrinkles and sagging of no more than 10cm area are less than or equal to 3 places, 4.1.9.1 The adhesion of the decorative surface paint film shall be checked according to the provisions of JB/T9832.2. The paint film adhesion should not be lower than level 2. 4.1.9.2 Method for measuring the adhesion of paint film: Check any point on the decorative surface, calculate the percentage of the peeling area to the specified inspection area, and determine the grade after comparing with the standard. 4.1.10 Carriage assembly
4.1.10.1 The compartment panel should be flexible to open and close, and the connection should be reliable. The ratio of the force to lift the compartment panel to the deadweight of the compartment panel should not be greater than 65%. 4.t.10.2 The height difference between adjacent compartment panels and the gap between the compartment panels after the compartment panels are closed should not be greater than 5mm. The gap between each compartment panel and the bottom panel should generally not be greater than 3m. The maximum gap in some places is allowed to be 5mm. The cumulative length of the gap of 3mm~5mm should not be greater than 20% of the closed panel length.
4.1.10.3 The outer contour of the vehicle should be rectangular, and the ratio of the difference in the length of its diagonal lines to the length of the diagonal lines should not be less than one-fourth of the lower one. 4.1.11 The supporting points or surfaces of the trailer's box frame and vehicle frame should be in close contact, and the maximum gap when unloaded should not be greater than 0.2% of the vehicle length. 4.1.12 The parts and components connected by the trailer's fasteners should be firmly connected. There should be no missing parts. The fastening bolts of key parts such as wheels, leaf springs, and turntables should be tightened according to the specified torque.
4.1.13 The welding quality requirements of the main parts of the trailer's frame (including the box frame for dump trailers), the traction frame, turntable frame, suspension, axle head and other key parts should meet the requirements of Table 6.
GB/T4330-—2003
Leakage welding, crack
Burn-through, technical penetration
Gas emulsion bite, slag inclusion
4.2 Safety technical requirements
Table 6 Welding quality requirements for key parts
Calculation method
Number of defects allowed to appear
Number of defects allowed to appear
Number of defects within 0.2m welding length ≤ mmn Calculate the ratio of the cleaning length to the continuous weld length 4.2.1 All tire models and tire patterns on the same trailer should be consistent. Qualified quality requirements
Total ≤3
≤2C%. No more than 3
4.2,2 The rear overhang of a full trailer should not be greater than 55% of the wheelbase, and the load-bearing point of a semi-trailer when fully loaded should comply with the provisions of Table 1. 4.2.3 The external dimensions of the vehicle group composed of the permitted matching tractor shall comply with the provisions of 3.2 of GB7258-1997. 4.2.4 The trailer mass ratio (ratio of the total mass of the trailer to the curb mass of the tractor) of the wheeled tractor group shall not be greater than 3. Note: The curb mass of the tractor refers to the mass of the tractor with the smallest curb mass permitted for matching in the trailer product manual. 4.2.5 The specific power of the tractor group shall not be less than 4.1kW/1. Note: Specific power = rated power of the tractor (kW)/total driving mass of the group (t). 4.2.6 The stability angle of the group to the left or right when it is unloaded and static: semi-trailer, 25° * full trailer, 235° 4.2.7 When the trailer is driving in a straight line on a dry road, there shall be no obvious sway. 4.2.8 The fastening bolts of the wheels shall meet the requirements of mechanical properties of grade 8.8 and above as specified in GB/T 3098.1~3098.2. 1 The fastening screws of the lower turntable must be equipped with anti-loosening devices: 4.2.9 The trailer (or vehicle group) shall have a service brake system and a parking brake system. 4.2.9.1 The service brakes of the trailer shall meet the following requirements. a) All wheels shall be equipped with brakes. b) The effect of the service brake device shall be reasonably distributed between the axles. c) The effect of the service brake device shall be symmetrically distributed between the left and right wheels of each axle. The brakes must have wear compensation devices. After the brakes are worn, the brake closure must be easily compensated by the automatic or automatic adjustment device. c) The automatic travel of the brake pedal of the semi-trailer shall meet the requirements of the vehicle's technical conditions and the instructions for use. f) When the hydraulic service brake reaches the specified braking efficiency, the pedal stroke (including idle stroke, the same below) shall not exceed one-fourth of the full pedal stroke.
The hydraulic service brake system shall not damage the function of the service brake system due to the corrosion of the brake fluid on the brake pipe, etc., forming air blockage. 4.2.9.2 The parking brake of the trailer unit shall meet the following requirements. The parking brake can ensure that the trailer unit can be parked reliably on the uphill and downhill slopes even without the driver's control. The driver must be able to achieve the parking brake while sitting in the seat. When parking the brake, the force applied to the operating device 1: is not more than 600 N when operated by hand, and not more than 700 N when operated by foot. b
4.2.9.3 The pneumatic brake system must have a pressure limiting device to ensure that the air pressure in the air reservoir does not exceed the maximum allowable air pressure. 4.2.9.4 The design and construction of brake lines and brake hoses shall comply with the provisions of 6.11 of GB7258-1997. 4.2.9.5 The air cylinder used for trailers shall comply with the provisions of 6.12 of GB7258-1997. 4.2.10 Braking performance
4.2.10.1 Service brake performance test
a) Test service brake performance by braking distance The braking distance of the trailer vehicle group at the specified initial speed and the braking stability shall comply with the requirements of Table 7. If there is any doubt about the braking distance of the no-load test, the braking performance requirements of the full-load test in Table 7 may be used. The braking distance refers to the distance traveled by the trailer vehicle group from the moment the foot touches the brake pedal to the moment the vehicle group stops when the vehicle group brakes suddenly at the specified initial speed.
Train set type
Wheeled tractor set
Walking tractor set
Braking distance and braking stability requirements
Braking initial spring,
(km/h)
b) Use stable speed to test driving brake performance Full load test braking
Distance requirements
No load test braking
Distance requirements/
GB/T 4330—2003
Braking stability requirements
When braking, the vehicle shall not exceed
The specified test track width/m
When the trailer set brakes suddenly at the specified initial speed, the braking stability deceleration and braking stability shall meet the requirements of Table 8. Braking coordination time: refers to the time required from the start of the pedal action to the trailer vehicle brake stable base speed reaching the specified value in Table 8 when the brake is pressed suddenly. Trailer group braking coordination time requirements: load capacity 4t, should not be more than 0.53s load capacity 4t, should not be more than 0.65s. Table 8 Braking deceleration and braking stability requirements Initial speed/
Vehicle type
Wheeled tractor group
(km/h)
Full load test turning
Stable deceleration/
No load test braking
Stable deceleration/
(m/s°)
Braking stability requirements
Braking time The group shall not exceed
Specified test track width/m
Walking tractor group
Note: Braking stability speed refers to the average value from the time when the group braking deceleration reaches the maximum to the time when the deceleration begins to decrease when the brake deceleration instrument is used for inspection.
When there is doubt about the braking performance of the unloaded test, the braking performance requirements of the full-load test in Table 8 can be used. c) When conducting the braking performance test, the brake pedal force should meet the following requirements: ≤700N for full-load test and ≤600N for unloaded test. 4.2.10.2 Parking Brake Performance
The parking brake performance of the trailer vehicle group should meet the requirements of 6.14.3 of GB 7258-1997. 4.2.11 Signal Device
4.2.11.1 The light guide should be installed firmly and should not be loosened or damaged due to the vibration of the trailer. 4.2.11.2 The trailer should be equipped with left and right rear position lights, left and right brake lights, rear license plate lights, rear reflectors and left and right rear turn signals. The light color should meet the relevant requirements of GB 4785.
4.2.11.3 Two red warning lights shall be installed on the left and right sides of the trailer: their height shall be 300mm~400mm1 higher than the front rail of the trailer and less than 150mm from the outside of the vehicle compartment
4.2.11.4 Trailers with a load of 2t or more shall be equipped with side reflectors. The reflectors shall comply with the provisions of 7.2.5 of GB72581997. 4.2.11.5 The brightness of various lamps at normal voltage shall comply with the requirements of 7.6.13 of GB 72581997. 4.2.11.6 The joints of the circuit system shall be tightly wrapped with insulating cloth, and the parts passing through metal objects shall be padded with rubber, plastic pipes and other insulating materials. 4.2.12 Wheel requirements
4.2.12.1 The load of the tire shall not exceed the rated load of the tire, 4.2.12.2 The lateral swing and radial moment of the wheel assembly shall not exceed 8mml. 4.2.13 The side and rear lower protection devices of the trailer shall comply with the provisions of 11.13 of GB72581997. 4.2.14 The dump truck shall be equipped with a locking device in the transportation state and a locking device in the maintenance state after lifting, and they shall be reliable and effective. Safety warning signs should be set in the clear positions on both sides of the car, and the safety warning signs should comply with the requirements of (B10396. 4.2.15 The product instruction manual must contain requirements for safety and safe operation. 5 Test method
Carry out in accordance with the provisions of GB/T4331.
6 Inspection regulations
6.1 The inspection of trailers is divided into factory inspection and type test. GB/T 4330--2003
6.2 Each trailer must pass the inspection before it can leave the factory, and it must be accompanied by documents or marks that prove the quality of the product. 6.3 For trailer factory inspection, all items with \~/” in Table 9 must be checked. All items must be qualified before the certificate of conformity can be issued for shipment. 6.4
Type test of trailer
The manufacturer shall conduct type test in one of the following situations. When the new product is finalized and identified;
After formal production, when there are major changes in structure, materials, and processes that may affect product quality; when the product is resumed after being discontinued for more than two years; when there is a major difference between the results of the final inspection and the results of the last type inspection: d)
Quality monitoring under normal production conditions,
Type inspection items are all items listed in the standard, see Table 9. For type inspection, two prototypes are randomly selected from the same batch of products that pass the factory inspection. Formal production will commence only after all items are qualified. Under normal production conditions, quality monitoring and reliability tests should be conducted at least once every three years, and inspections of other items should be conducted at least once a year.
6.4.4.1 The inspection adopts the one-time normal sampling plan specified in GB/T2828, with special inspection level S-1. The quality characteristic classification and quality level requirements of each inspection item are shown in Table 9.
6.4.4.2 Classification of non-conformities
Any inspected item that does not meet the requirements specified in Chapter 4 is called a non-conforming item. According to the importance of its product quality characteristics, it is divided into Class A non-conforming items, Class B non-conforming items and Class C non-conforming items. The quality characteristic classification of each item is shown in Table 9. Table 9 Inspection item characteristic classification and quality level requirements Item classification
Maximum outer dimension
Item name
Tire number and pattern
Tire load
Tilt stability angle
True line running stability
Strength of wheel fixing bolts, anti-loosening of fastening bolts for up and down rotation
Service brake
Parking brake of trailer group
Design and structure of brake line and brake hose Gas tank used for trailer
Lights should be installed
Signal equipment requirements
Red sign at the front of full trailer
Load 2t The above trailers are equipped with reflectors, various lamps, light-weight
Circuit system
Trailer side and rear lower protection devices
Unloading transportation state lock Over-travel after lifting Maintenance state Locking device Technical safety signs
Product instruction manual Safety requirements
Reliability
Item clause number
4. 2. 10. 1
4. 2. 5. 2
4.2. 9. 4
4, 2. 11. 1
4.2, 11.2
4. 2, 11. 9
4. 2. J1. 4
4. 2. 1L.5
1. 2. 1L. 5
Test items
Item classification
Item name
Towing mass ratio of wheeled tractor group
Specific power of tractor group
Pressure limiting device of air brake system
Transverse motion and radial runout of wheels
Air brake joint
Sealing performance of brake system
Pressed self-unloading performance
Fastener assembly requirements
Welding quality of key parts
Fully-trailer is flexible in steering
Semi-trailer wheels are flexible in rotation
Surface painting and primer
Adhesion of decorative surface film
Box panels should be flexible to open and close and reliably connected
Circular plate chain
The outer corridor of the vehicle should be rectangular
Table 9 (continued)
Gap between the box frame and the frame of the dump trailer AQL value requirements for item 6.4.4.3
The qualified quality level (AQI. value) of various items is shown in Table 9, 6.4.4.4
General situation. Inspection batch N=26~50 units, maximum sample size n=2. Item Date No.
4. 2. 12. 2
4. 1. 9.
4. 1. 9. 2
4. 1. 10. 1
GB/T 4330--2003
Out! Inspection Item White
6.4.4.5 Sampling Plan See Table 10.4, R is the number of unqualified points for sample acceptance, R is the number of unqualified points for sample rejection. If all types are accepted, the sample batch under inspection is deemed qualified, otherwise the sample batch under inspection is deemed unqualified. Table 10 Sampling plan
Classification of non-conformities
Inspection level
Number of samples R
7 Marking, packaging, transportation and storage
7.1 Each trailer shall be equipped with at least one permanent trademark or factory logo in a simple and visible position on the front of the vehicle body, and a logo that can identify the vehicle model shall be installed in a visible position on the outer surface of the vehicle body. 7.2 The vehicle must be equipped with a permanent product label. The production station label shall be made in accordance with the provisions of GB/T13306 and shall be fixed in a clear position that is not affected by the replacement of parts. Its specific location shall be indicated in the product manual. The label shall indicate: brand, model, total mass, load capacity, factory number, factory date and manufacturer name. 7.3 The trailer leaves the factory-generally as a complete vehicle, without packaging. For special needs, the packaging method can be negotiated separately, GB/T 4330 --2003
The whole trailer shall be shipped in accordance with the relevant regulations of the transportation department. The random technical documents, accessories, spare parts, and parts that must be removed during transportation shall be packed separately to ensure that they are not damaged or lost during transportation. 7.5 The accompanying documents, spare parts and accessories of the trailer are: a) Product instruction manual;
b) Product inspection certificate;
c) Packing list:
Spare parts and accessories, etc. (provided according to the instructions or contract requirements) 7.6 The product should be stored in a dry place with a flat ground, avoiding sunlight as much as possible, and paying attention to anti-corrosion and anti-corrosion.4
Type test of trailers
The manufacturer shall conduct type test in one of the following situations. When the new product is finalized and identified;
After formal production, when the structure, material and process have changed greatly, which may affect the product quality; when the product is stopped for more than two years and then resumed; when there is a big difference between the result of the final inspection and the result of the last type inspection: d)
Quality monitoring under normal production conditions,
Type inspection items are all items listed in the standard, see Table 9. Type inspection also randomly selects 2 samples from the same batch of products that pass the factory inspection. After all items are qualified, formal production will be carried out. Under normal production conditions, the reliability test should be carried out at least once every three years, and the inspection of other items should be carried out at least once a year.
6.4.4.1 The inspection shall adopt the normal sampling plan specified in GB/T 2828, the special inspection level S-1, the quality characteristic classification and quality level requirements of each inspection item are shown in Table 9.
6.4.4.2 Classification of non-conformities
All inspected items that do not meet the requirements of Chapter 4 are called non-conformities. According to the importance of their product quality characteristics, they are divided into Class A non-conformities, Class B non-conformities and Class C non-conformities. The quality characteristic classification of each item is shown in Table 9. Table 9 Classification of inspection items and quality level requirements Item classification
Maximum outer dimension
Item name
Tire number and pattern
Tire load
Tilt stability angle
True line running stability
Strength of wheel fixing bolts, anti-loosening of fastening bolts for up and down rotation
Service brake
Parking brake of trailer unit
Design and construction of brake line and brake hose Gas tank used for trailer
Lights to be installed
Signal equipment requirements
Red sign at the front of full trailer
Load 2t The above trailers are equipped with reflectors, various lamps, light-weight
Circuit system
Trailer side and rear lower protection devices
Unloading transportation state lock Over-travel after lifting Maintenance state Locking device Technical safety signs
Product instruction manual Safety requirements
Reliability
Item clause number
4. 2. 10. 1
4. 2. 5. 2
4.2. 9. 4
4, 2. 11. 1
4.2, 11.2
4. 2, 11. 9
4. 2. J1. 4
4. 2. 1L.5
1. 2. 1L. 5
Test items
Item classification
Item name
Towing mass ratio of wheeled tractor group
Specific power of tractor group
Pressure limiting device of air brake system
Transverse motion and radial runout of wheels
Air brake joint
Sealing performance of brake system
Pressed self-unloading performance
Fastener assembly requirements
Welding quality of key parts
Fully-trailer is flexible in steering
Semi-trailer wheels are flexible in rotation
Surface painting and primer
Adhesion of decorative surface film
Box panels should be flexible to open and close and reliably connected
Circular plate chain
The outer corridor of the vehicle should be rectangular
Table 9 (continued)
Gap between the box frame and the frame of the dump trailer AQL value requirements for item 6.4.4.3
The qualified quality level (AQI. value) of various items is shown in Table 9, 6.4.4.4
General situation. Inspection batch N=26~50 units, maximum sample size n=2. Item Date No.
4. 2. 12. 2
4. 1. 9.
4. 1. 9. 2
4. 1. 10. 1
GB/T 4330--2003
Out! Inspection Item White
6.4.4.5 Sampling Plan See Table 10.4, R is the number of unqualified points for sample acceptance, R is the number of unqualified points for sample rejection. If all types are accepted, the sample batch under inspection is deemed qualified, otherwise the sample batch under inspection is deemed unqualified. Table 10 Sampling plan
Classification of non-conformities
Inspection level
Number of samples R
7 Marking, packaging, transportation and storage
7.1 Each trailer shall be equipped with at least one permanent trademark or factory logo in a simple and visible position on the front of the vehicle body, and a logo that can identify the vehicle model shall be installed in a visible position on the outer surface of the vehicle body. 7.2 The vehicle must be equipped with a permanent product label. The production station label shall be made in accordance with the provisions of GB/T13306 and shall be fixed in a clear position that is not affected by the replacement of parts. Its specific location shall be indicated in the product manual. The label shall indicate: brand, model, total mass, load capacity, factory number, factory date and manufacturer name. 7.3 The trailer leaves the factory-generally as a complete vehicle, without packaging. For special needs, the packaging method can be negotiated separately, GB/T 4330 --2003
The whole trailer shall be shipped in accordance with the relevant regulations of the transportation department. The random technical documents, accessories, spare parts, and parts that must be removed during transportation shall be packed separately to ensure that they are not damaged or lost during transportation. 7.5 The accompanying documents, spare parts and accessories of the trailer are: a) Product instruction manual;
b) Product inspection certificate;
c) Packing list:
Spare parts and accessories, etc. (provided according to the instructions or contract requirements) 7.6 The product should be stored in a dry place with a flat ground, avoiding sunlight as much as possible, and paying attention to anti-corrosion and anti-corrosion.4
Type test of trailers
The manufacturer shall conduct type test in one of the following situations. When the new product is finalized and identified;
After formal production, when the structure, material and process have changed greatly, which may affect the product quality; when the product is stopped for more than two years and then resumed; when there is a big difference between the result of the final inspection and the result of the last type inspection: d)
Quality monitoring under normal production conditions,
Type inspection items are all items listed in the standard, see Table 9. Type inspection also randomly selects 2 samples from the same batch of products that pass the factory inspection. After all items are qualified, formal production will be carried out. Under normal production conditions, the reliability test should be carried out at least once every three years, and the inspection of other items should be carried out at least once a year.
6.4.4.1 The inspection shall adopt the normal sampling plan specified in GB/T 2828, the special inspection level S-1, the quality characteristic classification and quality level requirements of each inspection item are shown in Table 9.
6.4.4.2 Classification of non-conformities
All inspected items that do not meet the requirements of Chapter 4 are called non-conformities. According to the importance of their product quality characteristics, they are divided into Class A non-conformities, Class B non-conformities and Class C non-conformities. The quality characteristic classification of each item is shown in Table 9. Table 9 Classification of inspection items and quality level requirements Item classification
Maximum outer dimension
Item name
Tire number and pattern
Tire load
Tilt stability angle
True line running stability
Strength of wheel fixing bolts, anti-loosening of fastening bolts for up and down rotation
Service brake
Parking brake of trailer unit
Design and construction of brake line and brake hose Gas tank used for trailer
Lights to be installed
Signal equipment requirements
Red sign at the front of full trailer
Load 2t The above trailers are equipped with reflectors, various lamps, light-weight
Circuit system
Trailer side and rear lower protection devices
Unloading transportation state lock Over-travel after lifting Maintenance state Locking device Technical safety signs
Product instruction manual Safety requirements
Reliability
Item clause number
4. 2. 10. 1
4. 2. 5. 2
4.2. 9. 4
4, 2. 11. 1
4.2, 11.2
4. 2, 11. 9
4. 2. J1. 4
4. 2. 1L.5
1. 2. 1L. 5
Test items
Item classification
Item name
Towing mass ratio of wheeled tractor group
Specific power of tractor group
Pressure limiting device of air brake system
Transverse motion and radial runout of wheels
Air brake joint
Sealing performance of brake system
Pressed self-unloading performance
Fastener assembly requirements
Welding quality of key parts
Fully-trailer is flexible in steering
Semi-trailer wheels are flexible in rotation
Surface painting and primer
Adhesion of decorative surface film
Box panels should be flexible to open and close and reliably connected
Circular plate chain
The outer corridor of the vehicle should be rectangular
Table 9 (continued)
Gap between the box frame and the frame of the dump trailer AQL value requirements for item 6.4.4.3
The qualified quality level (AQI. value) of various items is shown in Table 9, 6.4.4.4
General situation. Inspection batch N=26~50 units, maximum sample size n=2. Item Date No.
4. 2. 12. 2
4. 1. 9.
4. 1. 9. 2
4. 1. 10. 1
GB/T 4330--2003
Out! Inspection Item White
6.4.4.5 Sampling Plan See Table 10.4, R is the number of unqualified points for sample acceptance, R is the number of unqualified points for sample rejection. If all types are accepted, the sample batch under inspection is deemed qualified, otherwise the sample batch under inspection is deemed unqualified. Table 10 Sampling plan
Classification of non-conformities
Inspection level
Number of samples R
7 Marking, packaging, transportation and storage
7.1 Each trailer shall be equipped with at least one permanent trademark or factory logo in a simple and visible position on the front of the vehicle body, and a logo that can identify the vehicle model shall be installed in a visible position on the outer surface of the vehicle body. 7.2 The vehicle must be equipped with a permanent product label. The production station label shall be made in accordance with the provisions of GB/T13306 and shall be fixed in a clear position that is not affected by the replacement of parts. Its specific location shall be indicated in the product manual. The label shall indicate: brand, model, total mass, load capacity, factory number, factory date and manufacturer name. 7.3 The trailer leaves the factory-generally as a complete vehicle, without packaging. For special needs, the packaging method can be negotiated separately, GB/T 4330 --2003
The whole trailer shall be shipped in accordance with the relevant regulations of the transportation department. The random technical documents, accessories, spare parts, and parts that must be removed during transportation shall be packed separately to ensure that they are not damaged or lost during transportation. 7.5 The accompanying documents, spare parts and accessories of the trailer are: a) Product instruction manual;
b) Product inspection certificate;
c) Packing list:
Spare parts and accessories, etc. (provided according to the instructions or contract requirements) 7.6 The product should be stored in a dry place with a flat ground, avoiding sunlight as much as possible, and paying attention to anti-corrosion and anti-corrosion.5
Test items
Item classificationwwW.bzxz.Net
Item name
Towing mass ratio of wheeled tractor group
Specific power of tractor group
Pressure limiting device of air brake system
Transverse motion and radial runout of wheels
Air brake joint
Sealing performance of brake system
Pressed self-unloading performance
Fastener assembly requirements
Welding quality of key parts
Fully-trailer is flexible in steering
Semi-trailer wheels are flexible in rotation
Surface painting and primer
Adhesion of decorative surface film
Box panels should be flexible to open and close and reliably connected
Circular plate chain
The outer corridor of the vehicle should be rectangular
Table 9 (continued)
Gap between the box frame and the frame of the dump trailer AQL value requirements for item 6.4.4.3
The qualified quality level (AQI. value) of various items is shown in Table 9, 6.4.4.4
General situation. Inspection batch N=26~50 units, maximum sample size n=2. Item Date No.
4. 2. 12. 2
4. 1. 9.
4. 1. 9. 2
4. 1. 10. 1
GB/T 4330--2003
Out! Inspection Item White
6.4.4.5 Sampling Plan See Table 10.4, R is the number of unqualified points for sample acceptance, R is the number of unqualified points for sample rejection. If all types are accepted, the sample batch under inspection is deemed qualified, otherwise the sample batch under inspection is deemed unqualified. Table 10 Sampling plan
Classification of non-conformities
Inspection level
Number of samples R
7 Marking, packaging, transportation and storage
7.1 Each trailer shall be equipped with at least one permanent trademark or factory logo in a simple and visible position on the front of the vehicle body, and a logo that can identify the vehicle model shall be installed in a visible position on the outer surface of the vehicle body. 7.2 The vehicle must be equipped with a permanent product label. The production station label shall be made in accordance with the provisions of GB/T13306 and shall be fixed in a clear position that is not affected by the replacement of parts. Its specific location shall be indicated in the product manual. The label shall indicate: brand, model, total mass, load capacity, factory number, factory date and manufacturer name. 7.3 The trailer leaves the factory-generally as a complete vehicle, without packaging. For special needs, the packaging method can be negotiated separately, GB/T 4330 --2003
The whole trailer shall be shipped in accordance with the relevant regulations of the transportation department. The random technical documents, accessories, spare parts, and parts that must be removed during transportation shall be packed separately to ensure that they are not damaged or lost during transportation. 7.5 The accompanying documents, spare parts and accessories of the trailer are: a) Product instruction manual;
b) Product inspection certificate;
c) Packing list:
Spare parts and accessories, etc. (provided according to the instructions or contract requirements) 7.6 The product should be stored in a dry place with a flat ground, avoiding sunlight as much as possible, and paying attention to anti-corrosion and anti-corrosion.5
Test items
Item classification
Item name
Towing mass ratio of wheeled tractor group
Specific power of tractor group
Pressure limiting device of air brake system
Transverse motion and radial runout of wheels
Air brake joint
Sealing performance of brake system
Pressed self-unloading performance
Fastener assembly requirements
Welding quality of key parts
Fully-trailer is flexible in steering
Semi-trailer wheels are flexible in rotation
Surface painting and primer
Adhesion of decorative surface film
Box panels should be flexible to open and close and reliably connected
Circular plate chain
The outer corridor of the vehicle should be rectangular
Table 9 (continued)
Gap between the box frame and the frame of the dump trailer AQL value requirements for item 6.4.4.3
The qualified quality level (AQI. value) of various items is shown in Table 9, 6.4.4.4
General situation. Inspection batch N=26~50 units, maximum sample size n=2. Item Date No.
4. 2. 12. 2
4. 1. 9.
4. 1. 9. 2
4. 1. 10. 1
GB/T 4330--2003
Out! Inspection Item White
6.4.4.5 Sampling Plan See Table 10.4, R is the number of unqualified points for sample acceptance, R is the number of unqualified points for sample rejection. If all types are accepted, the sample batch under inspection is deemed qualified, otherwise the sample batch under inspection is deemed unqualified. Table 10 Sampling plan
Classification of non-conformities
Inspection level
Number of samples R
7 Marking, packaging, transportation and storage
7.1 Each trailer shall be equipped with at least one permanent trademark or factory logo in a simple and visible position on the front of the vehicle body, and a logo that can identify the vehicle model shall be installed in a visible position on the outer surface of the vehicle body. 7.2 The vehicle must be equipped with a permanent product label. The production station label shall be made in accordance with the provisions of GB/T13306 and shall be fixed in a clear position that is not affected by the replacement of parts. Its specific location shall be indicated in the product manual. The label shall indicate: brand, model, total mass, load capacity, factory number, factory date and manufacturer name. 7.3 The trailer leaves the factory-generally as a complete vehicle, without packaging. For special needs, the packaging method can be negotiated separately, GB/T 4330 --2003
The whole trailer shall be shipped in accordance with the relevant regulations of the transportation department. The random technical documents, accessories, spare parts, and parts that must be removed during transportation shall be packed separately to ensure that they are not damaged or lost during transportation. 7.5 The accompanying documents, spare parts and accessories of the trailer are: a) Product instruction manual;
b) Product inspection certificate;
c) Packing list:
Spare parts and accessories, etc. (provided according to the instructions or contract requirements) 7.6 The product should be stored in a dry place with a flat ground, avoiding sunlight as much as possible, and paying attention to anti-corrosion and anti-corrosion.
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