JB/T 6042-1992 Technical conditions for special chassis for truck cranes
Some standard content:
Machinery Industry Standard of the People's Republic of China
Special chassis for truck cranes
Technical conditions
Subject content and scope of application
JB/T 6042-92
This standard It stipulates the technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, etc. of special chassis for truck cranes. This standard applies to special chassis for truck cranes (hereinafter referred to as chassis) with a maximum rated lifting capacity of 8 to 63t. Chassis greater than 63t can be implemented as a reference.
2 referenced standards
GB1184 Provisions for shape and position tolerances without tolerances GB 1589
Automobile exterior size limits
GB18001
Tolerances and fits| | tt | Graphical signs for devices and signaling devices GB 6068. 4
GB 7258
GB7454
GB 9286
GB9417
JB 787
JB2667 | |tt | Beam adjustment technology stipulates the cross-hatch test of paint and varnish films
Automobile product model compilation rules
Automobile signs
Dimensions of the driver's operating position of the truck
For automobiles Technical conditions for water-heated heaters. Types and sizes of electric windshield wipers for automobiles. Technical conditions for electric electric wipers for automobile windshields. Technical conditions for automobile hydraulic steering boosting devices and power steering gear assemblies. JB3785
Automobile station Vehicle braking performance requirements
JB4019
JB4030.2
Test specifications for truck cranes and tire cranes Driving reliability test JB/T5943
General technical conditions for welded parts of engineering machinery
ZB T26 003
ZBT50 002
ZBT50 003
ZB J80003
Automobile door lock technical conditions
Special automobile product quality regular inspection Test Regulations Special Automobile Road Test Methods
Technical Conditions for Truck Cranes and Tire Cranes QCn 29008.1
Automotive Product Quality Inspection Complete Vehicle Assembly Adjustment and Appearance Assessment Methods QCn29008.6 Automotive Product Quality Inspection
Body sealing assessment method
QCn 29008. 7
Automotive product quality inspection
Body paint coating assessment method
Ministry of Mechanical and Electronics Industry of the People's Republic of China 1992-05- 28 Approved 912bZxz.net
Implemented on 1993-01-01
3 terminology
JB/T 6042-92
Chassis terminology should comply with the regulations of GB3730.1~3730.3. 4 Product model
The product model compilation rules are in accordance with GB9417. Its compilation structure is as follows oo
Enterprise name code
Vehicle category code
Factory-set maximum total weight "
口—one is represented by Chinese pinyin letters; ||tt| |①—One is represented by Arabic numerals;
] One can be represented by Chinese pinyin letters or Arabic numerals o
Enterprise custom code
Special automobile structural feature code||tt ||Product serial number
Note: The company name is the registration code of China Automotive Technology and Research Center, using two or three Chinese pinyin letters to represent 5 technical requirements
5.1 design and manufacturing
Chassis The design should comply with the requirements of this standard and must be manufactured according to the drawings and technical documents approved by the prescribed procedures. 5.2 Self-weight and axle load
The curb weight of the chassis and the load deviation of each axle of the chassis shall not exceed the design value. 3%. 5.3 Veranda Dimensions
Chassis outer dimensions shall comply with GB1589 regulations. For chassis with a total weight of more than 26t, the length and width dimensions may be specified in relevant technical documents.
Chassis. The working environment temperature should comply with the provisions of Article 1.1.3 of ZBJ80003. Chassis with special requirements can be implemented according to the technical agreement. 5.5 Engine
5.5.1 Engine power, torque, and minimum fuel consumption should meet the requirements of the design brief. . 5.5.2 The engine should have good starting performance. When the ambient temperature is above -5C, the car should be able to start smoothly. When the ambient temperature is below -5C, the car should be able to start smoothly after using starting fluid or other preheating measures. . 5.5.3 The engine works normally and stably at various speeds without abnormal noise: oil pressure, oil temperature, and water temperature should be within the engine technical specifications: 5.6 Transmission system
5.6.1 The clutch engagement is smooth and the separation is complete. , the operation is light, and there should be no abnormal noise, shaking or slipping. The pedal force should not be greater than 300N. 5.6.2 The requirements of the transmission, transfer case, transmission shaft and drive axle should respectively comply with the provisions of GB7258 7.2~7.7 Steering. System
5.7.1 The installation position of the steering wheel, the steering wheel's automatic return capability, the steering wheel's usage requirements, the maximum free rotation amount of the steering wheel, etc. shall comply with the provisions of GB7258 3.13.5
5.7. 2. On a flat, hard, dry and clean cement or asphalt road, the chassis transitions from straight driving to a circular driving state with a diameter of 24m at a speed of 10km/h, and the chassis is applied to the circumference of the outer edge of the steering wheel on the premise that it takes no more than 10 seconds. The force shall not be greater than 150N, and the difference between the left and right steering forces shall not be greater than 15% of the smaller steering force. 5.7.3 The hydraulic booster device shall comply with the requirements of JB3785. When the steering booster device fails, the steering wheel shall be used to control the vehicle steering 913.
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JB/T6042—92
5.7.4 The minimum turning diameter and front wheel alignment values ??shall comply with Articles 3.3 and 3.9 of GB7258. Regulation. 5.8 Braking system
5.8.1 When the engine is running at medium speed, the indicated air pressure of the air pressure gauge should rise from zero to the starting air pressure within 4 minutes. After the air compressor works for 10 minutes, the air pressure should reach the calibrated air pressure value. Stop inflating after reaching the calibrated air pressure. After 5 consecutive full braking times, the air pressure must not be lower than the starting air pressure. 5.8.2 When the air pressure rises to 590kPa, without using the brake, stop the air compressor for 3 minutes, and the reduction in air pressure should not exceed 9.8kPa. When the air pressure is 590kPa, depress the brake pedal to the bottom and observe for 3 minutes after the air pressure stabilizes. The air pressure drop shall not exceed 19.6 kPa.
5.8.3 The braking distance deviation and point braking on a flat, hard, dry and clean cement or asphalt road surface (adhesion coefficient is 0.7) shall comply with the provisions of Table 1.
Table 1
Item
Limit value
Total weight of the machine,
Initial velocity
12
12~ 26
26～50
>50
bottom
braking distance
m
disc 1
1 = 20km/h
3.8
4.4
6.0
7.4
Note: 1) Air pressure brake system: air pressure gauge indicates air pressure ≤ 500kPat hydraulic brake System: Pedal force ≤ 600N.
Full
Machine 2
30km/h
8.0
9.5
12
A15
2) Pneumatic braking system: the indicated air pressure of the air pressure gauge is not greater than the rated working pressure; hydraulic braking system: pedal force ≤ 700N
3) Stability requirements for emergency braking at the specified initial speed. Bottom
Emergency braking deviation amount”
mm
dream
=20 km/h
80
whole||tt ||Machine
=30km/h
200
Point braking+
V=30--40
km/h||tt| |No deviation
4) When applying partial braking (quickly relax the brake pedal), vehicle braking stability requirements (lightly hold the steering wheel with both hands) 5.8.4 When braking normally, the braking system should ensure that the braking force increases evenly; when the brake pedal is fully depressed, it should ensure effective braking. When driving without braking, the brake drum should not generate heat, and the brake drum should not make abnormal noise when braking. 5.8.5 When the braking system partially fails, the braking performance shall comply with the provisions of Article 4.12 of GB7258. 5.8.6 The parking brake system is easy and reliable to operate. When in the braking position, the parking indicator light should work, and the parking brake performance should comply with JB4019 regulations.
5.8.7 Auxiliary braking should be sensitive and reliable.
5.8.8 Vehicles using air pressure braking systems must be equipped with a low-pressure alarm device. 5.9 Power take-off
5.9.1 When in gear, the gear meshing is flexible, the interlocking device is effective, there is no automatic gear jumping, and there is no abnormal noise during operation. 5.9.2 There must be an easily identifiable sign indicating the coupling and disengagement positions of the power take-off near the power take-off control lever. 5.10 Electrical instruments
5.10.1 The car should be equipped with a main power switch. Each switch should be appropriately positioned to facilitate driver operation. The wiring of the whole car should be correct. No short circuit or open circuit should occur. A protective coil must be installed where the wires pass through the iron hole. . 5.10.2 All lamps, indicators, instruments, horns, etc. should be installed firmly and work reliably (the light bulbs should have protective devices and should not become loose, damaged, lose their function or change the direction of light due to vehicle vibration. All switches should be free and should not be caused by The vehicle vibrates and automatically opens and closes); the switch must have a pattern mark that complies with the regulations of GB4094; external lighting and signaling devices should comply with the regulations of GB4785. 5.10.3 The beam irradiation position of the headlight shall comply with the provisions of Article 5.3 of GB7258. 5.11 Noise
5.11.1 For chassis with a total machine weight of no more than 26t, the maximum acceleration noise value outside the vehicle shall not exceed 89dB(A). 914
JB/T6042-92
5.11.2 For chassis with a total vehicle weight greater than 26t, the maximum acceleration noise value outside the vehicle shall not exceed 91dB (A). 5.12 Exhaust gas emission
Free acceleration emission smoke degree is not greater than Rh5.0 (Bosch unit). 5.13 Oil leakage
The chassis must drive continuously at a medium speed for a distance of not less than 50km. After parking for 10 minutes, observe all parts. There must be no oil leakage. 5.14 Water leakage
Check the water tank, water pump, etc. when the engine is running and stopped. Water leakage is not allowed in the cylinder block, cylinder head, heater device and all connecting parts. 5.15 Chassis assembly quality requirements
5.15.1 Outsourced and outsourced accessories must have certificates of conformity issued by the manufacturer. The main outsourced accessories must be final products identified by relevant departments, and all parts must be inspected. It can only be assembled if it is qualified and has the acceptance procedures of the inspection department. 5.15.2 All parts of each assembly should be assembled correctly and completely. No missing or wrong installation is allowed. The fasteners are firmly connected and the tightening torque of the connectors in important parts should be Meet design requirements.
5.15.3 Gas and liquid pipelines and electrical circuits should be firmly installed and arranged neatly, and should not automatically loosen, fall off, or rub against each other during driving. 5.15.4
Each control piece is easy to operate, flexible, and has indicator marks. Each control mechanism and toe-in should be adjusted correctly according to the design requirements. 5.15.52
5.15.6 The lateral and radial swing of the wheel shall not exceed 8mm. 5.15.7 The appearance quality of tires should comply with the provisions of Article 6.1 of GB7258. The tire pressure should comply with the regulations of the corresponding vehicle model, and the error should not exceed ±19.6 kPa.
5.16 Appearance requirements
5.16.1 The exposed surface should be clean and free of oil, dirt, rust, damage and unevenness. 5.16.2 Casting, forging, welding and other non-machined surfaces should be smooth , there shall be no defects such as flash, burrs, trachoma, welding spots, oxide scale, etc. The welds should be evenly hooked, and there should be no cracks, bubbles, slag inclusions, or meat bites. 5.16.3 The paint film shall not have defects such as delamination, cracks, peeling, or flow marks. The paint film shall be firm and the color shall be bright. 5.17 Frame
5.17.1 The welding quality of the frame shall comply with JB/T5943. 5.17.2 The dimensional tolerances and shape and position tolerances of the frame assembly after welding shall meet the following requirements. The frame width tolerance should comply with the IT16 standard tolerance value in GB1800; a.
The diagonal length of the frame should not be greater than 1/1000 of the wheelbase from the first to the last axis (as shown in the figure ); b.
aa' - the axis of the pin hole of the front leaf spring lifting lug (or the center line of the front suspension); bb' - the axis of the pin hole of the rear leaf spring lifting lug or the center line of the balance shaft of the balance suspension c. The flatness of the plane on the box-shaped part of the frame is 1.5mm within a length of 1m and the total length is 4mm; the longitudinal straightness of the side is 1.5mm within a length of 1m and should not be greater than 6mm within the full length. 5.17.3 The flatness of the plane on the slewing bearing ring should meet the requirements of the 11th grade tolerance level in GB1184, and its surface roughness parameter Ra value is 12.5um.
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JB/T 6042-92
5.17.4 Defects in frame parts caused by stamping are allowed to be repaired by repair welding. The mechanical properties and shape of the parts after repair welding are consistent with The size must meet the design requirements.
5.18 Cab
5.18.1 The cab should be fully enclosed in metal. The internal width dimension should be no less than 800mm, and the remaining dimensions should refer to JB2667. 5.18.2 The cab has beautiful appearance, coordinated colors, broad vision, reasonable indoor structure, good ventilation, and has good dew-proof, sound insulation, heat insulation, rainproof and dustproof sealing properties.
5.18.3 The type, size and technical requirements of wipers shall comply with the provisions of JB3032 and JB3033, and their arrangement shall ensure an appropriate wiping area. For single-seat cabs, the wiping area shall not be less than 1800cm2. 5.18. 4. The layout of the heating ducts in the cab should be reasonable, the outlet airflow should not be directed towards the human body, and the flow rate should be appropriate. The type and technical conditions of the heating device should comply with the regulations of JB2883.
5.18.5 The door should be easy to open and close, and should not open by itself. The door lock should be locked reliably. There is no abnormal sound from the doors and windows when driving. The technical conditions of its door locks should comply with ZBT26003 regulations.
5.18.6 The cab glass should be safety glass, and the front windshield should be laminated glass (or tempered glass in some areas). Other doors and windows can use tempered glass.
5.18.7 There must not be any sharp protrusions inside or outside the cab that can cause injury. The non-metallic materials inside the cab should have high fire resistance.
5.18.8 The inner and outer surfaces of the cab should be smooth and tidy, free of cracks and rust, and the inner and outer sheet metal parts should not be uneven. 5.18.9 After installation, the doors, door frames, windows and window frames must have all the gaps around them. 6 Test methods
6.1 Appearance inspection shall be carried out by visual inspection and hand feeling. 6.2 Use general or special measuring instruments for dimensions, pressure, temperature, and weight. 6.3 The reliability mileage and road distribution during the chassis finalization test shall comply with the provisions of Article 2.1 of JB4030.2. 6.4 The reliability driving test conditions of the chassis, the measurement of main structural parameters and technical characteristic parameters and the test methods should comply with ZBT50003 regulations.
6.5 The chassis periodic inspection and test procedures shall be in accordance with ZBT50002. 6.6 Frame stress measurement shall be carried out according to the requirements in GB6068.4 or with simulated load. 6.7 Oil leakage inspection should be carried out in accordance with the provisions of Appendix E of QCn29008.1. 6.8 The inspection and evaluation of the body paint coating shall be in accordance with the requirements of QCn29008.7 truck model requirements, and the paint film fastness shall be in accordance with the requirements of GB9286. 6.9 The use of headlights and beam adjustment shall be adjusted and tested in accordance with GB7454. 6.10 The inspection and evaluation of the rainproof and dustproof sealing of the cab shall be in accordance with the requirements of QCm29008.6 truck model. 7 Inspection rules
7.1 Type test
a. The number of products in the type test shall be no less than 2 units; b. The final test items are shown in Table 2.
7.2 Periodic inspection test
7.2.1 Assessment test
For mass-produced chassis, for truck crane chassis with a maximum rated lifting capacity less than or equal to 16t, the cumulative output reaches 800 units; a .
For chassis with a maximum rated lifting capacity greater than 16t and less than or equal to 32t, the cumulative production reaches 400 units: for chassis with a maximum rated lifting capacity greater than 32~63t, when the cumulative production reaches 200 units; 1 unit shall be sampled Carry out regular assessment tests; b. For the driving mileage requirements of the assessment test, see 2 in ZBT50002.2 provisions; c. The assessment test items are shown in Table 2.
916
JB/T 6042--92
9
899
this
this
一|| tt||+
88
Note
Preparation
4
E
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A
4
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check
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Rat
rich
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water| |tt||Oil
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Slippery
Performance
Chassis performance|| tt||External
item
inspection
inspection
item
5
4
3||tt| |No.
Sequence
:
917
JB/T 6042--92
Note
Article
Article
备
4
a
4
A
A
华
2|| tt||year return
inspection
w
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car
Butterfly
return
:|| tt||:
frame
car
out of school
move
put
chassis performance
test|| tt | 918
7.2.2 Spot check test
JB/T 6042--92
The inspection test shall be based on the sampling evaluation period specified in Table 3; a.
Table 3|| tt||Annual output, Taiwan
Number of samples, Taiwan
Sampling period, year
b.
C.
100
3
100~300
2
The driving test of the spot check test should be carried out after running in, and the test mileage should be no less than 500km; the spot check test items are shown in Table 2.
7.2.3 Factory inspection
a.
b.
Each chassis must undergo factory inspection after assembly and adjustment. It can only be sent to the warehouse after passing the factory inspection; 300| |tt||1
Driving inspection and adjustment should be carried out on hard roads during factory inspection. The maximum speed shall not exceed 40km/h (or shall not exceed 50% of the maximum speed);
c.
a.
The factory inspection chassis mileage shall not be less than 100km; inspection items and The content is shown in Table 2.
8 Marking, packaging, transportation, storage
8.1 Product labels and all instruction boards should be in the correct position, with clear numbers, and the type and specifications should comply with the relevant regulations of JB787. 8.2 The model number and factory number of the chassis should be printed on an easily visible part of the metal frame in size 1 printing. The model number comes first, the factory number comes last, and asterisks (★) are printed at both ends of the factory number. 8.3 When the chassis is shipped, the random parts (including the parts removed from the main engine) should be properly packaged to ensure that they are not damaged or rusted during transportation and storage.
8.4
The technical documents supplied with the machine include:
a.
b.
c
Instructions); product certificate;
packing list;
d.
consumable parts list.
8.5 The chassis tools and engine tools should be complete. 8.61
The packaging and transportation methods are determined by negotiation between the supplier and the buyer. 9Quality Guarantee
Under the condition that the user abides by the usage and storage rules stipulated by the manufacturer, the warranty period will start to be calculated one month after the chassis is picked up. The chassis warranty period is one year. During the warranty period If the parts of the internal product are indeed damaged due to poor manufacturing quality, the manufacturer shall repair or replace them for the user free of charge (except for wearing parts).
Additional notes:
This standard is proposed and managed by Changsha Construction Machinery Research Institute. This standard was drafted by Changsha Construction Machinery Research Institute, Shandong Tai'an Truck Crane Factory, and Xuzhou Heavy Machinery Factory. The main drafters of this standard are Cao Shenmei, Wang Xiurong, and Sun Dengbin. 919
Consumable parts list.
8.5 Chassis tools and engine tools should be complete. 8.61
The packaging and transportation methods are determined by negotiation between the supplier and the buyer. 9Quality Guarantee
Under the condition that the user abides by the usage and storage rules stipulated by the manufacturer, the warranty period will start to be calculated one month after the chassis is picked up. The chassis warranty period is one year. During the warranty period If the parts of the internal product are indeed damaged due to poor manufacturing quality, the manufacturer shall repair or replace them for the user free of charge (except for wearing parts).
Additional notes:
This standard is proposed and managed by Changsha Construction Machinery Research Institute. This standard was drafted by Changsha Construction Machinery Research Institute, Shandong Tai'an Truck Crane Factory, and Xuzhou Heavy Machinery Factory. The main drafters of this standard are Cao Shenmei, Wang Xiurong, and Sun Dengbin. 919
Consumable parts list.
8.5 Chassis tools and engine tools should be complete. 8.61
The packaging and transportation methods are determined by negotiation between the supplier and the buyer. 9Quality Guarantee
Under the condition that the user abides by the usage and storage rules stipulated by the manufacturer, the warranty period will start to be calculated one month after the chassis is picked up. The chassis warranty period is one year. During the warranty period If the parts of the internal product are indeed damaged due to poor manufacturing quality, the manufacturer shall repair or replace them for the user free of charge (except for wearing parts).
Additional notes:
This standard is proposed and managed by Changsha Construction Machinery Research Institute. This standard was drafted by Changsha Construction Machinery Research Institute, Shandong Tai'an Truck Crane Factory, and Xuzhou Heavy Machinery Factory. The main drafters of this standard are Cao Shenmei, Wang Xiurong, and Sun Dengbin. 919
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