Some standard content:
All technical contents of this standard are mandatory
GB19194—2003
This standard is formulated based on the General Rules and Safety of Karts and Their Equipment in Part VI of the 2001 International Rules of Karting promulgated by CIK/FIA (International Automobile Federation/International Karting Committee). This standard is proposed by the Tianjin Quality and Technical Supervision Bureau. This standard is under the jurisdiction of the Tianjin Tanggu District Quality and Technical Supervision Bureau. The drafting units of this standard are: Tianjin Tanggu District Quality and Technical Supervision Bureau, Xiamen Chengshin Rubber Industry Company, Shenzhen Haoshengzhe Karting Co., Ltd., Tianjin Oushen Karting Co., Ltd., and the 5701 Factory of the Chinese People's Liberation Army. The main drafters of this standard are: Liu Yuzhuo, Liu Yingru, Jian Jianzheng, Gu Feng, and Guo Qi. This standard is published for the first time.
1 Scope
General Technical Conditions for Racing Karts
GB 19194--2003
This standard specifies the technical requirements and inspection rules for racing karts (hereinafter referred to as karts) and their components. This standard applies to the appraisal inspection, delivery inspection and arbitration inspection of karts produced and used in China and imported karts. 2 Normative References
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties to the agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions shall apply to this standard. GB/T2828 Batch inspection counting sampling procedures and sampling tables (applicable to continuous batch inspection) GB19196 Kart classification and registration
GB19197 Kart track construction specifications
HG/T2177 Tire appearance quality
JB3677 Tightening torque specifications for automotive threaded fasteners JB/T5943 General technical conditions for welded parts of engineering machinery 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Braking distance
The distance that the kart slides from the moment the brake is applied to the moment the wheels stop sliding at a certain speed. 3.2
Wheelbase
The distance between the center lines of the front and rear axles.
(Kart) Frame
Auxiliary components installed on the frame that are in direct contact with the airflow, including two side boxes, a deflector and a front fender. 3.4
Racing karts
Karts that meet the requirements of relevant national standards and are used in club cups, regional cups, championships, national cups, international championships, grand prix and other events.
4 Technical requirements
4.1 Basic requirements
The design, manufacture and maintenance of karts must meet safety requirements. Defects that endanger the personal safety of drivers and other personnel are not allowed. Karts are only allowed to be used when they are in a safe state. 1
GB 19194—-2003
4.2 Conditions of use
Karts should be used in venues that meet the requirements of GB19197. 4.3 Structure of karts
Karts consist of three parts: frame (including body, seat and other accessories), wheels and engine (see Figure 1). Figure 1 Structural diagram of a racing kart
4.4 Performance
4.4.1 Height
The highest point of the kart shall not exceed 650mm from the ground (excluding the headrest). 4.4.2 Length
Accelerator pedal
Front fender
Steering wheel
Engine
Exhaust pipe
Brake disc
Rear bumper
Side box
Brake pedal
Front bumper
The length of a long-track kart shall not exceed 2100mm (excluding the fairing), and the length of other karts (excluding the fairing) shall not exceed 1820mm.
4.4.3 Width
The total width shall not exceed 1400mm.
4.4.4 Wheelbase
The wheelbase of FW class is 1040mm±5mm, and the maximum wheelbase of other classes is 1270mm. GB 19194-2003
The minimum wheelbase of FE and ICE is 1060mm, and the minimum wheelbase of other classes (except FE, FW and ICE) is 1010mm. 4.4.5 Wheelbase
The wheelbase shall not be less than two-thirds of the wheelbase.
4.4.6 Minimum curb weight
shall meet the requirements of GB19196.
4.4.7 Braking distance
On a standard road surface with a road friction coefficient greater than 0.7, the braking distance at a speed of 30km/h is less than 7.5m. 4.4.8 Starting performance
For electric start karts, the starting time shall not exceed 5s. 4.5 Occupant protection
After a racing kart collides head-on with a rigid fixed barrier at a speed of 45 km/h (or undergoes a pendulum test equivalent to a collision test), the following requirements shall be met:
a) The cockpit shall not be allowed to be significantly deformed, and the smooth exit of the hybrid II male dummy shall not be affected, and the frame shall not be allowed to have a break that causes the risk of occupant injury.
b) The fuel system shall not be allowed to leak during the collision, and the leakage after the collision shall be less than 30g/min. c) The seat and seat fixing points shall be intact.
4.6 Noise
The noise of the kart shall not exceed 107.5dB. 4.7 Frame
4.7.1 The frame main pipe diameter of the intercontinental racing kart shall not be less than 30mm. 4.7.2 The frame main pipe diameter of the FW-class kart shall not be less than 30mm, and the frame main pipe diameter of the other levels of formula karts shall not be less than 32mm.
4.7.3 The frame material must meet the use requirements, and the tensile strength of the frame material must not be less than 350MPa. 4.7.4 The maximum outer diameter of the rear axle of FE and ICE karts is 40mm, and the minimum wall thickness is 2.5mm. The diameter of the rear axle of FW is not less than 30mm, and the wall thickness is not less than 4.9mm. The maximum outer diameter of the rear axle of other levels of karts is 50mm, the minimum outer diameter is 25mm, and the minimum wall thickness is 1.9mm.
4.7.5 No more than three sets of bearings are installed on the rear axle. Chrome coating is not allowed for FE and ICE axle heads. 4.7.6 Titanium, magnesium and their composite materials are not allowed to be used in the frame. 4.7.7 Slag inclusions, cracks and pores are not allowed in the rear axle material. 4.7.8 Elastic or hinged suspension is not allowed between the frame and the axle. 4.7.9 The fatigue life of the frame shall not be less than 10×10° times when simulating the use of karts. After the fatigue life test, the frame is not allowed to have cracks or permanent deformation.
4.7.10 Weld quality
The weld quality of the kart shall comply with the relevant provisions of JB/T5943. 4.7.11 The frame structure dimensions of the FW-class kart shall comply with the provisions of Figure 2. The length tolerance not marked in Figure 2 is ±5mm, and the angle tolerance not marked is ±1°
4.7.12 Worn and damaged parts are not allowed to be repaired and reused, and the replaced materials are not allowed to be reused. 4.7.13 The tightening torque of parts shall comply with the provisions of JB3677. 4.7.14 The parts on the frame shall not be wrongly installed or missed, and shall be firmly fixed. GB19194—2003
4.7.15 The edge of the bottom plate shall not have hidden dangers that may cause harm to the occupants. When drilling holes on the bottom plate, the diameter of the holes shall not be greater than 10mm, and the margins of adjacent holes shall not be less than four times the hole diameter. The floor should not exceed the front bumper. 4.7.16 No parts should protrude beyond the rear bumper. Except for the brake disc and sprocket, other parts should not be lower than the floor of the vehicle body. 4.8 Engine
4.8.1 The engine should be suitable for the working conditions of the kart, and the engine configuration should comply with the requirements of GB19196. It is not allowed to use injection fuel injection devices and fuel combustion aids. 4.8.2 It is not allowed to use adjustable ignition devices (such as staged ignition devices and delayed ignition devices). 4.8.3 The water pump of a water-cooled engine is an independent system relative to the engine. 4.8.4 A muffler should be installed on a two-stroke engine. The exhaust device should be located behind the occupants and its height should not exceed 450mm. The outer diameter of the muffler terminal should be greater than 30mm and face the ground at a certain angle to the right of the direction of travel. The exhaust device should not have sharp edges. 4.8.5 The radiator should be no more than 500mm from the ground and no more than 550mm from the rear axle. It should not come into contact with the seats and side boxes. Its pipes should be able to withstand the corresponding pressure and heat and be securely fixed. 4.8.6 The wiring of the electrical system should be reasonable, and each connection point should be reliable and have insulation measures. 4.9 Braking system
4.9.1 FC, FE, ICC and ICE karts must have two independently working brakes. The brakes should be hydraulic and should act on all four wheels at the same time. 4.9.2 If the brakes are operated by cables, the diameter of the brake cables used shall not be less than 1.8 mm. There should be a spare cable between the pedal and the brake so that the brakes can still work normally when the normal brake cables fail. 4.9.3 The use of graphite (carbon sheet) brake discs is prohibited. 4.9.4 The brakes should have wear compensation devices to ensure that they do not fail during braking. 4.9.5 The brake pedal and all parts acting on the brake master pump should be made of steel. The pump body and pump sleeve should not be surface treated with chrome or nickel.
4.9.6 The brake pedal should have a return spring. The brake pedal should not extend beyond the front bumper. 4.10 Steering system
4.10.1 The steering wheel should turn flexibly and there should be no blocking during the turning process. The bearings of the steering mechanism shall be made of all metal. 4.10.2 The vertical distance between the highest point of the steering wheel and the plane on the bottom plate of the frame is 525mm ± 20mm. The steering column of the steering wheel shall be a metal tube with a diameter of not less than 20mm and a wall thickness of not less than 2mm. The direction shall be controlled by a circular steering wheel. One-third of the circumference of the steering wheel may be flat. The steering gear ratio is 1:1. 4.10.3
4.10.4 The components of the steering system shall be fixed with self-locking nuts or adhesive bolt-type fasteners. 4.10.5 If a metal steering wheel is used, its wheel rim shall be covered with elastic materials such as rubber. 4.10.6 Cable-operated or chain-type flexible steering mechanisms are not allowed. 4.11 Travel system
4.11.1 Tire size: The maximum diameter of the tire of ICE-level FE-level kart is 350mm, and the maximum width of the tire is 250mm. The maximum width of the rear tire of ICA/J-level kart is 185mm. For other racing karts, the maximum diameter of the front tire is 280mm, the maximum diameter of the rear tire is 300mm, the maximum width of the front tire is 135mm, and the maximum width of the rear tire is 215mm. 4.11.2 Except for FE and ICE karts, which use Φ152.5mm (6in) rims, the rims of other karts are Φ126mm (5in). The outer diameter of the 126mm (5in) rim should not be less than 136.2mm, the diameter of the rim and tire joint is (126±1.2)mm, the rim and tire joint width is not less than 10mm, and the transition radius between the rim frame and the tire joint surface is not less than 8mm (see Figure 3).
GB19194—2003
Figure 3126.2mm (5in) rim schematic diagram
4.11.3 The front wheel should be equipped with a bearing seat, the width of which should not be less than 10mm. 4.11.4 There shall be no less than three bolts reinforcing the outer edge of the rear wheel, and the tightening torque shall be 1.8Nm to 2.3Nm. Unit: mm
4.11.5 In order to make the tire and the rim tightly connected, the tire shall be inflated to a pressure of 400kPa (4ba) after the tire and the rim are assembled, and then deflated to the specified pressure.
4.11.6 The tire bursting pressure (liquid) shall not be less than 800kPa (8ba). 4. 11.7
Dry tires and wet tires shall not be mixed. Soft tires and hard tires shall not be mixed. Tires of different brands shall not be mixed. Heating or cooling tires shall not be allowed. Chemical treatment of tires shall not be allowed. 4.11.8
Retreaded tires shall not be allowed. Radial tires shall not be allowed. 4. 11.9
4.11.10 Unregistered kart tires shall not be used. The appearance quality of the tire shall comply with the relevant provisions of HG/T2177. 4. 11. 11
4.11.12 The tensile strength of the rear wheel fixing bolts shall not be less than 800MPa. 4.12 The transmission system
Should be rear wheel transmission. Differentials and chain lubrication devices are not allowed. 6
4.13 Fuel system
4.13.1 Any part of the kart other than the fuel tank is not allowed to be used as a fuel tank. GB 19194--2003
4.13.2 It is recommended to use a quick-loading and unloading fuel tank. The fuel tank can only supply fuel to the engine under standard air pressure, and its outlet aperture is not greater than 5mm. 4.13.3 The maximum capacity of the fuel tank of FE and ICE karts is 19L, and the minimum capacity of the fuel tank of other levels of karts is 8L. When the fuel tank is installed on the side of the frame, a bumper shall be installed. The bumper shall be a metal tube with a diameter of not less than 15mm and a wall thickness of not less than 1.5mm. 4.13.4 The fuel tank shall not be allowed to leak. If a plastic fuel tank is used, it shall be made of flame-retardant materials and shall be treated with anti-static treatment. 4.13.5 The fuel tank and the fuel pipe shall be firmly fixed. The fuel pipe shall be properly protected. 4.13.6 The accelerator pedal shall have a return spring and a limit screw. The accelerator pedal and the carburetor shall be connected in a hinged manner. The accelerator pedal shall not extend beyond the front bumper.
4.14 Requirements for non-metallic materials
4.14.1 The seats, air deflector, front fender and side boxes shall be made of non-metallic materials. 4.14.2 Carbon fiber and polyaramid (Cavelar) fiber products are not allowed to be used as non-metallic materials. When glass fiber products are used, they shall be matte textile products. When plastics are used, they shall not be easily broken. 4.14.3 The surface of non-metallic parts shall not have flash, cracks or deformation that affects the performance. 4.15 Seats
4.15.1 Headrests shall be installed for FE-level and ICE-level karts. 4.15.2 The acute angle between the seat back and the horizontal plane shall not exceed 62°. 4.15.3 The seat surface shall be concave. The vertical projection length of the seat surface shall be 300mm±5mm. The angle between the seat surface and the horizontal plane shall be 8°～28°.
4.15.4 The vertical projection length of the seat back shall not be less than 465mm (excluding the headrest). 4.15.5 The lowest point of the seat shall not be lower than the lower plane of the frame. The seat shall be firmly fixed. 4.16 Body
4.16.1 Air deflector
4.16.1.1 The air deflector shall be installed at the bottom of the front bumper and the front side of the frame. The deflector shall be mounted on the front bumper at two mounting points. No reinforcement components are allowed. The deflector shall be mounted using the quick-install method and shall not hinder the normal movement of the accelerator and brake pedals. 4.16.1.2 The distance between the front end of the deflector and the centerline of the front axle shall not exceed 600mm. 4.16.1.3 The deflector shall be bilaterally symmetrical with the centerline of the frame as the axis. The distance from the inner plane of the end of the deflector close to the bumper to the initial position of the pedal shall not be less than 150mm.
4.16.1.4 The width of the deflector shall be 860mm±43mm. 4.16.2 Front fender
The distance between the upper end of the front fender and the lower plane of the steering wheel shall not be less than 50mm. The width of the front fender shall be 250mm±12.5mm. 4.16.3 Side box
4.16.3.1 The surface of the side box shall be smooth and complete. Except for the holes required for fixing, there shall be no other holes on the side box board. The curve radius of the side box edge should be 5 mm~20 mm.
4.16.3.2 The side box should be installed in an appropriate position and should not affect the normal operation of the passengers. 4.16.3.3 The width of the front end of the side box is 120mm±6.5mm, and the width of the rear end of the side box is 180mm±9mm. 4.16.3.4 The lower plane of the side box should be no less than 25mm and no more than 40mm from the ground. The gap between the side box and the rear tire is 40mm±20mm.
4.16.3.5 The upper plane of the side box should not exceed the horizontal plane formed by the top of the front wheel and the rear wheel. The distance that the side box extends outwards beyond the vertical plane on the outside of the wheel should not be more than 20mm. The maximum distance that the side box extends inwards beyond the vertical plane on the outside of the wheel is 40mm (see Figure 4). 4.17 Safety protection devices
4.17.1 Safety belts
Seat belts are not allowed to be installed on racing karts. 7
GB19194—2003
4.17.2 Bumper
L≤140;
L3= 40±20 :
Ls=120±6;
Lr ≥ 50 :
L≤600:
L≤40.
Figure 4 Schematic diagram of body component clearance
4.17.2.1 Bumpers shall be made of carbon structural steel or alloy structural steel. 4.17.2.2 The height of the bottom of the front and rear bumpers from the ground shall not be less than 200mm. L2=25～40:
L4=5~20 ;
Le=180±9 :
Lg =250±12. 5 ;
L1o=860±43;
4.17.2.3 The front bumper should not exceed the line connecting the high points of the outer edges of the front and rear wheel rims. The height of the side bumper from the ground should not exceed the height of the rear axle. It should cover at least two-thirds of the width of the rear wheel 4.17.2.4 The diameter of the upper crossbar of the rear bumper shall not be less than 19mm; the diameter of the lower part of the rear bumper, the front bumper and the side bumpers shall not be less than 15mm, and the wall thickness of the bumper shall not be less than 1.5mm (or equivalent profile). 4.17.2.5 The bottom of the upper crossbar of the rear bumper shall be at least 15mm higher than the top of the front bumper and perpendicular to the direction of travel of the kart. The upper crossbar of the rear bumper shall be at least 60mm wider than the front end of the front bumper. 4.17.2.6 FE and ICE karts are not required to install side bumpers. 4.17.3 Chain guards
The chain guards shall be able to effectively cover the engine chain and its transmission parts. 4.18 Identification
Each vehicle shall have an identification. The identification plate shall be fixed to a conspicuous position of the rear crossbeam of the frame. 4.18.14
4.18.2 The content of the kart identification plate includes: the level of the kart (such as ICA-level kart), engine model and power, frame number, implementation standard, production date, factory name, and address. 4.18.3 The warning instructions (or warning signs) for the use of karts should be marked on obvious parts of the karts and explained in detail in the instruction manual.
5 Inspection rules
5.1 Inspection classification
GB19194—2003
Kart inspection is divided into identification inspection and quality consistency inspection. Identification inspection is used to comprehensively evaluate whether the quality of karts meets the requirements of this standard. Quality consistency inspection is used to assess whether the karts have reached the quality level confirmed in the identification inspection. 5.2 Sampling
When sampling in the finished product warehouse of the production enterprise, the minimum number of samples to be drawn is 2, and the minimum inspection batch should not be less than 5 times the minimum number of samples. When sampling at the kart user unit, the number of inspection batches is not limited. When sampling for supervision inspection, the sampling location is not limited, and the number of inspection batches is not limited. Kart samples should be randomly sampled from the inspection batch.
5.3 Identification inspection
5.3.1 Situations where identification inspection is required
Identification inspection shall be carried out in any of the following situations: identification inspection shall be carried out before the kart of this model is put on the market; a)
b) In order to obtain market access and product safety certification; c)
When the kart of this model is registered;
When the occupants of the kart of this model are injured or disabled during use, and the reason is unknown; e)
When the frame material inspection results are inconsistent with the inspection results of the identification inspection; f)
When the user or quality supervision agency makes a request, g) When there are major changes in production conditions, processes, materials, and main components. When resuming production after suspension. 5.3.2 Identification and inspection items
The contents specified in the technical requirements of this standard are all identification and inspection items. 5.3.3 Judgment rules
Average sample size and inspection critical constant for Class A non-conformity 5. 3.3. 1
Occupant protection:
Tensile strength of frame material;
Tensile strength of rear wheel fixing bolts;
Tire burst pressure;
Frame fatigue life;
f) The rear axle material does not meet the requirements of the technical requirements of this standard and constitutes a fatal defect. According to the normal inspection and sampling plan of GB/T2828, the qualified quality level (AQL) is 1.5, and the special inspection level is S-1. The sample size and inspection critical constant of the inspection batch are shown in Table 1. Table 1 Sample size and critical test number of fatal defect items Batch, N
51～150
151~280
281~500
501~～~10 000
Sample size, n1
5.3.3.2 Average sample size and critical test number of Class B unqualified products Performance in use;
b) Noise;
Weld quality;
Braking system;
Qualified number, Acl
Unqualified number, Rel
GB19194—2003
Steering system;
The seats do not meet the requirements of the technical requirements of this standard, which constitute serious defects. According to GB/T2828 normal inspection sampling plan, its qualified quality level (AQI) is 2.5, and the general inspection level is I. The sample size and inspection critical constant of the inspection lot are shown in Table 2. Table 2 Sampling size and inspection critical constant of heavy defect items Batch, N2
91~150
151~280
281~500
Sample size, n2
5.3.3.3 Average sample size and inspection critical constant of Class C unqualified qualified judgment number, Ac2
Unqualified judgment number, Re
The part of the technical requirements other than the items determined in Articles 5.2.3.1 and 5.2.3.2 that does not meet the technical requirements is a minor defect. According to GB/T2828 normal inspection sampling plan, its qualified quality level (AQL) is 6.5, and the general inspection level is II. The sample size and inspection critical number of the inspection batch are shown in Table 3.
Table 3 Sample size and inspection critical number of minor defects Batch, N3
91~150
5.3.3.4 Determination of inspection batch
Sample size, n3
Qualified determination number, Ac3
Unqualified determination number, Re:
The number of unqualified types A, B, and C in the sample is all less than or equal to the corresponding qualified determination number Ac, and the inspection batch is determined to be qualified. The number of unqualified types in the sample is greater than or equal to the corresponding unqualified determination number Re, and the inspection batch is determined to be unqualified. 5.3.3.5 Disposal of inspection batch
Unqualified inspection batches should be inspected one by one. Unqualified karts can only be shipped and used after they are repaired and qualified. Unqualified karts are not allowed to leave the factory or be sold.
5.4 Quality consistency inspection
5.4.1 Applicable situations for quality consistency inspection Every kart shall be subject to quality consistency inspection. 5.4.2 Quality consistency inspection items
Except for the fatal defect items identified in Article 5.3.3.1 of the technical requirements, the rest are quality consistency inspection items. The annual quality inspection items of karts include all quality consistency inspection items and rear axle material inspection. 5.4.3 Judgment rules
Follow the provisions of 5.3.3.2, 5.3.3.3, 5.3.3.4 and 5.3.3.5. 102 Identification and inspection items
The contents specified in the technical requirements of this standard are all identification and inspection items. 5.3.3 Judgment rules
Average sample size and inspection critical constant for Class A non-conformity 5. 3.3. 1
Occupant protection:
Tensile strength of frame material;
Tensile strength of rear wheel fixing bolts;
Tire burst pressure;
Frame fatigue life;
f) The rear axle material does not meet the requirements of the technical requirements of this standard and constitutes a fatal defect. According to the normal inspection and sampling plan of GB/T2828, the qualified quality level (AQL) is 1.5, and the special inspection level is S-1. The sample size and inspection critical constant of the inspection batch are shown in Table 1. Table 1 Sample size and critical test number of fatal defect items Batch, N
51～150
151~280
281~500
501~～~10 000
Sample size, n1
5.3.3.2 Average sample size and critical test number of Class B unqualified products Performance in use;
b) Noise;
Weld quality;
Braking system;
Qualified number, Acl
Unqualified number, Rel
GB19194—2003
Steering system;
The seats do not meet the requirements of the technical requirements of this standard, which constitute serious defects. According to GB/T2828 normal inspection sampling plan, its qualified quality level (AQI) is 2.5, and the general inspection level is I. The sample size and inspection critical constant of the inspection lot are shown in Table 2. Table 2 Sampling size and inspection critical constant of heavy defect items Batch, N2
91~150
151~280
281~500
Sample size, n2
5.3.3.3 Average sample size and inspection critical constant of Class C unqualified qualified judgment number, Ac2bZxz.net
Unqualified judgment number, Re
The part of the technical requirements other than the items determined in Articles 5.2.3.1 and 5.2.3.2 that does not meet the technical requirements is a minor defect. According to GB/T2828 normal inspection sampling plan, its qualified quality level (AQL) is 6.5, and the general inspection level is II. The sample size and inspection critical number of the inspection batch are shown in Table 3.
Table 3 Sample size and inspection critical number of minor defects Batch, N3
91~150
5.3.3.4 Determination of inspection batch
Sample size, n3
Qualified determination number, Ac3
Unqualified determination number, Re:
The number of unqualified types A, B, and C in the sample is all less than or equal to the corresponding qualified determination number Ac, and the inspection batch is determined to be qualified. The number of unqualified types in the sample is greater than or equal to the corresponding unqualified determination number Re, and the inspection batch is determined to be unqualified. 5.3.3.5 Disposal of inspection batch
Unqualified inspection batches should be inspected one by one. Unqualified karts can only be shipped and used after they are repaired and qualified. Unqualified karts are not allowed to leave the factory or be sold.
5.4 Quality consistency inspection
5.4.1 Applicable situations for quality consistency inspection Every kart shall be subject to quality consistency inspection. 5.4.2 Quality consistency inspection items
Except for the fatal defect items identified in Article 5.3.3.1 of the technical requirements, the rest are quality consistency inspection items. The annual quality inspection items of karts include all quality consistency inspection items and rear axle material inspection. 5.4.3 Judgment rules
Follow the provisions of 5.3.3.2, 5.3.3.3, 5.3.3.4 and 5.3.3.5. 102 Identification and inspection items
The contents specified in the technical requirements of this standard are all identification and inspection items. 5.3.3 Judgment rules
Average sample size and inspection critical constant for Class A non-conformity 5. 3.3. 1
Occupant protection:
Tensile strength of frame material;
Tensile strength of rear wheel fixing bolts;
Tire burst pressure;
Frame fatigue life;
f) The rear axle material does not meet the requirements of the technical requirements of this standard and constitutes a fatal defect. According to the normal inspection and sampling plan of GB/T2828, the qualified quality level (AQL) is 1.5, and the special inspection level is S-1. The sample size and inspection critical constant of the inspection batch are shown in Table 1. Table 1 Sample size and critical test number of fatal defect items Batch, N
51～150
151~280
281~500
501~～~10 000
Sample size, n1
5.3.3.2 Average sample size and critical test number of Class B unqualified products Performance in use;
b) Noise;
Weld quality;
Braking system;
Qualified number, Acl
Unqualified number, Rel
GB19194—2003
Steering system;
The seats do not meet the requirements of the technical requirements of this standard, which constitute serious defects. According to GB/T2828 normal inspection sampling plan, its qualified quality level (AQI) is 2.5, and the general inspection level is I. The sample size and inspection critical constant of the inspection lot are shown in Table 2. Table 2 Sampling size and inspection critical constant of heavy defect items Batch, N2
91~150
151~280
281~500
Sample size, n2
5.3.3.3 Average sample size and inspection critical constant of Class C unqualified qualified judgment number, Ac2
Unqualified judgment number, Re
The part of the technical requirements other than the items determined in Articles 5.2.3.1 and 5.2.3.2 that does not meet the technical requirements is a minor defect. According to GB/T2828 normal inspection sampling plan, its qualified quality level (AQL) is 6.5, and the general inspection level is II. The sample size and inspection critical number of the inspection batch are shown in Table 3.
Table 3 Sample size and inspection critical number of minor defects Batch, N3
91~150
5.3.3.4 Determination of inspection batch
Sample size, n3
Qualified determination number, Ac3
Unqualified determination number, Re:
The number of unqualified types A, B, and C in the sample is all less than or equal to the corresponding qualified determination number Ac, and the inspection batch is determined to be qualified. The number of unqualified types in the sample is greater than or equal to the corresponding unqualified determination number Re, and the inspection batch is determined to be unqualified. 5.3.3.5 Disposal of inspection batch
Unqualified inspection batches should be inspected one by one. Unqualified karts can only be shipped and used after they are repaired and qualified. Unqualified karts are not allowed to leave the factory or be sold.
5.4 Quality consistency inspection
5.4.1 Applicable situations for quality consistency inspection Every kart shall be subject to quality consistency inspection. 5.4.2 Quality consistency inspection items
Except for the fatal defect items identified in Article 5.3.3.1 of the technical requirements, the rest are quality consistency inspection items. The annual quality inspection items of karts include all quality consistency inspection items and rear axle material inspection. 5.4.3 Judgment rules
Follow the provisions of 5.3.3.2, 5.3.3.3, 5.3.3.4 and 5.3.3.5. 10
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