JB/T 3688.2-1998 Technical requirements for wheel loaders

JB/T 3688.2-1998 This standard is a revision of JB 3688.2-86 "Technical Requirements for Wheel Loaders". This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of wheel loaders. This standard is applicable to wheel loaders used outdoors and working in a front-end direction. Other types of loaders can also refer to it. JB/T 3688.2-1998 Technical Requirements for Wheel Loaders JB/T3688.2-1998 Standard download decompression password: www.bzxz.net

ICS53.100
Machinery Industry Standard of the People's Republic of China
JB/T3688.2-1998
Wheel loaders-Technical specificationsIssued on November 16, 1998
National Bureau of Machinery Industry
Implementation on December 1, 1998
JB/T3688.2—1998
This standard is a revision of JB3688.2-86 "Technical specifications for wheel loaders". Compared with JB3688.2-86, the main technical content of this standard has been changed as follows: it clearly stipulates the qualitative and quantitative evaluation methods and criteria for the driver's field of vision; it clearly stipulates the technical requirements for common parts of loaders: the requirements for braking performance directly adopt GB853287 "Performance requirements and test methods for tire-type earth-moving machinery brake systems";
- The paint color requirements for the appearance of loaders have been deleted; according to the principle of verifiability, only technical guarantee conditions are stipulated in the standard, and the manufacturer's guarantee cannot replace the technical requirements, so the manufacturer's guarantee commitment has been deleted;- In order to coordinate with the current standards such as the loader reliability test method, Appendix A in the original standard has been deleted. This standard will replace JB3688.2-86 from the date of implementation. This standard is proposed and managed by the Engineering Machinery Standardization Technical Committee of the Ministry of Machinery Industry. The drafting unit of this standard: Tianjin Engineering Machinery Research Institute of the Ministry of Machinery Industry. The main drafting units of this standard: Liuzhou Engineering Machinery Co., Ltd., Xiamen Engineering Machinery Co., Ltd., and Xuzhou Loader Factory.
The main drafters of this standard are: Yang Yaoxi, Wu Runcai, Liu Liangchen, Zhao Canming, Li Suoyun, Zhang Erping, Li Weiping, Xu Yonghui. 1
1Scope
Machinery Industry Standard of the People's Republic of China
Technical Specifications for Wheel Loaders
Wheel loaders—Technical specificationsJB/T3688.2—1998
Error! Bookmark not defined.
Replaces JB3688.2—86
This standard specifies the technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of wheel loaders. This standard is applicable to wheel loaders (hereinafter referred to as loaders) for open-air use and front-end forward operation. Other types of loaders may also be used for reference.
2Cited Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. GB 2828-87
GB 282987
GB3766—83
GB/T 3846—93
GB 793587
GB841987
GB 842087
GB 8502-87
GB 853287
GB 1017588
GB1040089
GB 1085689
GB/T1330691
GB/T14761.6—93
GB 16710.1—1996
GB/T16710.2—1996
GB/T16710.3—1996
GB/ T16710.4—1996
GB/T16710.51996
GB/T16937.1—1997
GB/T 16937.2—1997
JB/T324991
JB3683—84
Count sampling procedure and sampling table for batch inspection (applicable to inspection of continuous batches)Count sampling procedure and sampling table for periodic inspection (applicable to inspection of stability of production process)General technical conditions for hydraulic system
Measurement of free acceleration smoke density of diesel vehicleFilter paper smoke density methodGeneral technical conditions for hydraulic components
Earth-moving machineryDriver's seat vibration test method and limit valueDriver's body size and minimum activity space for the driverEarth-moving machinery
Earth-moving machinery protection and storage
Performance requirements and test methods for brake system of tire-type earth-moving machineryRated working load of loader
Measurement method of force and tipping load of loaderGeneral for twin-turbine hydraulic torque converter Technical conditions and signs
Free acceleration smoke emission standard for diesel vehicles
Noise limit
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Earth-moving machinery
Earth-moving machinery
Construction machinery
Construction machinery
Approved by the State Bureau of Machinery Industry on November 16, 1998 Determination of external radiated noise under stationary test conditions Determination of noise at the driver's position under stationary test conditions Determination of external radiated noise under dynamic test conditions Determination of noise at the driver's position under dynamic test conditions Driver's field of vision criteria
Driver's field of vision assessment method
Guard plates and shields
Comfortable area and reach of operation
1998 -12-01 implementation
JB/T3688.1—96
JB/T3688.3—1998
JBn4198—86
JB/T593691
JB/T593791
JB/T5938—91
JB/T5939—91
J B/T5940—91
JB/T5941—91
JB/T594291
JB/T5943—91
JB /T5944—91
JB/T594591
JB/T594691
JB/T5947—91
JB/T5 94891
JB/T594991
JB/T6031—92
JB/T715593
JB/T7160 93
JB/T7692—95
JB/T7693—95
JB/T7696—95
JB/T7698—9 5
JB/T841096
JB/T8548—1997
JB/T8816—1998
JB/T51026.293
JB/T51147—94
JB/T5114894
ZBJ19016——89
ZBE39 001—86
ZBE39002—86
3 Technical requirements
3.1 General requirements
JB/T3688.2-1998
Basic parameters of wheel loaders
Test methods of wheel loaders
Technical conditions for diesel engines for construction machinery
General technical conditions for machined parts
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery
Construction machinery|| tt||Construction machinery
Construction machinery
Construction machinery
General technical conditions for gray iron castings
General technical conditions for ductile iron castings
General technical conditions for steel castings
General technical conditions for high manganese steel castings
General technical conditions for nonferrous alloy castings
General technical conditions for free forgings
General technical conditions for welded parts
General technical conditions for heat-treated parts
General technical conditions for assembly
General technical conditions for painting
Packaging Technical conditions for use
Technical conditions for caliper disc brakes
Technical conditions for shoe brakes
General technical conditions for steel die forgings
Technical conditions for wheels of wheeled engineering machinery
Test method for driver's field of vision
Engineering machinery
Technical requirements for locking devices of articulated frames of engineering machineryTechnical conditions for drive shaft assemblies for loaders
Instruments for engineering machinery
Installation dimensions of wheel spokes and hubs for loadersSound test method
Forward and reverse sound alarm devices for earth-moving machineryEngineering machinery Technical conditions for mechanical power shift transmission Technical conditions for engineering machinery drive axle
Tire loader product quality classification
Test method
Tire loader reliability accelerated test specification Tire loader reliability test method, fault classification and evaluation General technical conditions for single-stage centripetal turbine torque converter Truck crane and tire crane hydraulic oil solid particle contamination measurement method Truck crane and tire crane hydraulic oil solid particle contamination level 3.1.1 Loaders should be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures and meet the requirements of this standard. 3.1.2 The basic parameters of the loader are as specified in JB/T3688.1. Its structure should consider improving the operating efficiency of the loader and the possibility of replacing multiple working devices.
JB/T3688.21998
3.1.3 The loader should be able to operate normally at an ambient temperature of -15~+40℃. If there are special needs, it can be stipulated in the contract between the supply and demand parties.
3.1.4 The raw materials, purchased parts and cooperative parts used in the loader shall have the official mark and certificate of the supplier, and can only be used after passing the sampling inspection.
3.1.5 The machined parts of the loader shall comply with the provisions of JB/T5936. 3.1.6 The gray iron castings of the loader shall comply with the provisions of JB/T5937. 3.1.7 The ductile iron castings of the loader shall comply with the provisions of JB/T5938. 3.1.8 The steel castings of the loader shall comply with the provisions of JB/T5939. 3.1.9
The high manganese steel castings of the loader shall comply with the provisions of JB/T5940. 3.1.10
The non-ferrous metal castings of the loader shall comply with the provisions of JB/T5941. The forgings of the loader shall comply with the provisions of JB/T5942 and JB/T6031. 3.1. 11
The welded parts of the loader shall comply with the provisions of JB/T5943. The heat-treated parts of the loader shall comply with the provisions of JB/T5944. The assembly of the loader shall comply with the provisions of JB/T5945. The exterior painting of the loader shall comply with the provisions of JB/T5946. The hydraulic system and hydraulic components used in the loader shall comply with the provisions of GB3766 and GB7935. The diesel engine used in the loader shall comply with the provisions of JBn4198. The power shift transmission used in the loader shall comply with the provisions of JB/T8548. The torque converter used in the loader shall comply with the provisions of ZBJ19016 or GB10856. The drive axle used in the loader shall comply with the provisions of JB/T8816. The brake used in the loader shall comply with the provisions of JB/T5948 or JB/T5949. The drive shaft used in the loader shall comply with the provisions of JB/T7693. 3.1.23
The instruments used in loaders shall comply with the provisions of JB/T7696. 3.1.24The capacity of the fuel tank used in loaders shall ensure that the continuous operation time is not less than one work shift. 3.1.25The wheels used in loaders shall comply with the provisions of JB/T7155, and the installation dimensions of the spokes and hubs shall comply with the provisions of JB/T7698. 3.2 Performance requirements
3.2.1The breakout force of the loader shall comply with the requirements of JB/T3688.1. 3.2.2The solid particle contamination level of the hydraulic oil of the loader hydraulic system shall not exceed 20/17 in ZBE39002-86. 3.2.3The solid particle contamination level of the oil of the torque converter and transmission system of the loader shall not exceed 21/18 in ZBE39002-86. 3.2.4The sealing of the whole loader shall be reliable, stable and leak-free. After the whole machine sealing test in JB/T51026.2-93, the leakage of the whole machine shall not exceed 3 drops.
Note: JBT51026.2 is an arbitration method, and the whole machine sealing test in the factory inspection items can be used as a reference. 3.2.5 The settlement of the hydraulic cylinder of the loader shall comply with the provisions of Table 1. Table 1 Hydraulic cylinder settlement
Average value of static test for 3 hours
Bucket hydraulic cylinder
3.2.6 The loader shall meet the following requirements in the 1000-hour reliability test or industrial test: Lifting hydraulic cylinder
JB/T3688.2—1998
a) The average trouble-free working time shall be not less than 100 hours; b) The effectiveness shall be not less than 82%
3.3 Safety and comfort requirements
3.3.1 The rated load (working load) of the loader shall not exceed 50% of the static tipping load and 100% of the lifting capacity (see GB10175).
3.3.2 The noise limit of the loader shall comply with the provisions of GB16710.1. 3.3.3 The driver's seat for the loader shall have the manufacturer's mark and certificate, and the vibration limit of the seat shall comply with the provisions of GB8419. 3.3.4 The free acceleration smoke emission value of the loader shall comply with the provisions of Table 2. Note: The free acceleration smoke emission value in special working occasions shall comply with relevant regulations. Table 2 Standard value of free acceleration smoke emission
Rated load (working load)
Smoke value
3.3.5 The driver's cab of the loader shall comply with the provisions of GB8420, and shall be equipped with indicating charts or instruments that facilitate the driver to understand and observe the working status of the loader at any time.
3.3.6 The layout of the loader driver's operating device shall comply with the provisions of JB3683, and the operating force shall comply with the provisions of Table 3. Table 3 Operating force
Handle (boom, dump bucket)
≤120
Steering wheel
3.3.7 The braking performance of the loader shall comply with the provisions of GB8532. 3.3.8 The driver's field of vision of the loader shall comply with the provisions of GB/T16937.1. Pedal
≤700
3.3.9 The signal and external lighting devices of the loader shall meet the needs of driving and working conditions, and its forward and reverse alarm sound response shall comply with the provisions of JB/T8410.
3.3.10 The loader shall have safety technical measures during startup and operation to ensure personal safety and prevent accidents. The guard plate and shield of the loader shall comply with the provisions of JB/T3249.
3.3.11 The front and rear frames of the articulated loader shall be equipped with an articulated frame locking device that complies with the provisions of JB/T7692 to prevent deflection and ensure safety during delivery, lifting and maintenance. 4 Test method
The determination of the loader's breakout force and tipping load shall comply with the provisions of GB10400. 4.1
The measurement of the external radiated noise of the loader shall be in accordance with the provisions of GB/T16710.2 and GB/T16710.4. The measurement of the noise at the driver's position of the loader shall be in accordance with the provisions of GB/T16710.3 and GB/T16710.5. 4.3
4.4 The measurement of the exhaust smoke density of the diesel engine for the loader under free acceleration conditions shall be in accordance with the provisions of GB/T3846. The measurement of the forward and reverse alarm sound of the loader shall be in accordance with the provisions of JB/T8410. 4.5
The test and evaluation of the loader driver's field of vision shall be in accordance with the provisions of JB/T7160 and GB/T16937.2. JB/T3688.2-1998
4.7 The solid particle contamination measurement of the hydraulic oil of the loader hydraulic system and the oil of the torque converter and transmission system shall be in accordance with the provisions of ZBE39001. 4.8 The reliability test of the loader shall be in accordance with the provisions of JB/T51147 or JB/T51148 4.9 The tests of other items shall be carried out in accordance with the provisions of JB/T3688.3. 5 Inspection rules
The inspection of the loader is divided into factory inspection, periodic inspection and type inspection. The loader shall be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped, and shall be accompanied by documents or marks of qualified product quality. 5.1 Inspection Items
5.1.1 The factory inspection items of loaders shall at least include: a) Correctness of assembly;
b) Integrity of the whole machine, spare parts and random tools; c) Appearance quality;
d) Rated pressure of hydraulic system;
e) Lubrication status of each lubricating part;
f) Status of oils such as fuel, hydraulic oil and coolant; g) Simulation of driving conditions to detect braking distance and steering performance; h) Simulation of working conditions to detect the action time of working device; i) Forward and reverse alarm sound;
j) Tightness of the whole machine.
5.1.2 The periodic inspection items of loaders shall at least include: a) factory inspection items (see 5.1.1); b) kinematic parameters of working device:
c) bucket capacity:
d) weight of the whole machine and position of center of gravity:
e) digging force, lifting capacity and tipping load; f) turning radius and horizontal passing radius:
g) maneuverability and braking performance;
h) driving speed:
i) noise at the driver's ear under fixed working conditions;
j) layout and operating force of control devices:
k) contamination of hydraulic oil;
1) oil contamination of torque converter and transmission system: m) traction performance;
n) driver's field of vision:
o) exhaust smoke of diesel engine:
p) reliability test.
5.1.3 The type inspection items of loaders shall at least include: a) factory inspection items (see 5.1.1);
b) periodic inspection items (see 5.1.2);
c) industrial tests.
5.2 Sampling and batching
JB/T3688.2—1998
5.2.1 The factory inspection of loaders adopts full inspection. 5.2.2 The periodic and type inspection of loaders adopts sampling inspection. The specific sampling and batching methods shall be randomly selected by the quality inspection department of the manufacturer according to the one-time sampling plan specified in GB2829 from the batch of the month (or quarter) to be inspected. 5.2.3 Loaders shall be subject to type inspection in any of the following situations: a) Trial design and appraisal of new products or old products for transfer to factory production; b) When there are major changes in the normal production process, such as structure, materials or processes, which may affect product performance; c) When production is resumed after a long period of suspension;
d) When the national quality supervision agency proposes type inspection requirements. 5.3 Judgment rules
5.3.1 The factory inspection items shall be in accordance with the provisions of 5.1.1, and its indicators or requirements shall meet the requirements 100% to be qualified. 5.3.2 Loaders for finalized mass production shall be subject to periodic inspection at least once every two years. The inspection items shall be in accordance with the provisions of 5.1.2, and its indicators or requirements shall be judged according to the single sampling plan of ROL-50, DL=1 in GB2829. The inspection results of item p) in 5.1.2 are valid for five years. 5.3.3 Type inspection items shall be in accordance with the provisions of 5.1.3, and its indicators or requirements shall be determined according to the one-time sampling plan of RQL=40, DL-1 in GB2829.
Note: After the manufacturer and the user reach an agreement, it is allowed to adopt the one-time, two-time and five-time sampling plans of other RQL and DL specified in GB2829, and it is also allowed to adopt the sampling plans specified in GB2828 and other regulations. 6 Marking, packaging, transportation and storage
6.1 The loader shall be fixed with a sign in a conspicuous position, and its form and size shall comply with the provisions of GB/T13306. The sign shall at least indicate: a) Manufacturer name:
b) Product model and name;
c) Product main parameters:
d) Overall dimensions;
e) Product number:
f) Date of manufacture.
6.2 The packaging of the loader and its accessories, spare parts and random tools shall comply with the provisions of JB/T5947 and ensure that they will not be damaged under normal transportation and storage conditions.
6.3 The random documents shall be sealed and packaged with moisture-proof materials, including at least: a) Factory certificate of conformity;
b) Packing list;
c) Operation and maintenance instructions;
d) List of random accessories, spare parts and random tools. 6.4 The transportation of the loader shall comply with the relevant regulations of the transportation department. Without the consent of the manufacturer, the parts of the loader shall not be disassembled during transportation. Before shipment, the manufacturer shall carry out the following preparations: a) If necessary, drain the water in the water tank; b) Cut off the circuit connecting the battery and the vehicle body. 6.5 The protection and storage of the loader shall comply with the requirements of GB8502. 6
Mechanical Industry Standard
Technical Specifications for Wheel Loaders
JB/T368821998
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Book Size 880×1230
Print Sheet 3/4
4 Words 14,000bzxz.net
First Printing in November 1998
First Edition in November 1998
Print Quantity 00,001-500
Cost 1000 Yuan
98-213
8668891, its index or requirement shall meet the requirements 100% to be qualified. 5.3.2 For the loaders produced in batches, periodic inspection shall be carried out at least once every two years. The inspection items shall be in accordance with the provisions of 5.1.2, and its index or requirement shall be determined according to the one-time sampling plan of ROL-50, DL=1 in GB2829. The inspection result of item p) in 5.1.2 shall be valid for five years. 5.3.3 The type inspection items shall be in accordance with the provisions of 5.1.3, and its index or requirement shall be determined according to the one-time sampling plan of RQL=40, DL-1 in GB2829.
Note: After the manufacturer and the user reach an agreement, it is allowed to adopt the one-time, two-time and five-time sampling plans of other RQL and DL specified in GB2829, and it is also allowed to adopt the sampling plans specified in GB2828 and other regulations. 6 Marking, packaging, transportation and storage
6.1 The loader shall have a fixed sign in a conspicuous position, and its form and size shall comply with the provisions of GB/T13306. The label shall indicate at least: a) Manufacturer’s name:
b) Product model and name;
c) Product main parameters:
d) Overall dimensions;
e) Product number:
f) Date of manufacture.
6.2 The packaging of the loader and its accessories, spare parts and random tools shall comply with the provisions of JB/T5947 and ensure that they will not be damaged under normal transportation and storage conditions.
6.3 The random documents shall be sealed and packaged with moisture-proof materials, including at least: a) Factory certificate of conformity;
b) Packing list;
c) Instructions for use and maintenance:
d) List of random accessories, spare parts and random tools. 6.4 The transportation of the loader shall comply with the relevant regulations of the transportation department. Without the consent of the manufacturer, the parts of the loader shall not be disassembled during transportation. Before shipment, the manufacturer should carry out the following preparations: a) If necessary, drain the water in the water tank; b) cut off the circuit connecting the battery and the vehicle body. 6.5 The protection and storage of the loader should comply with the requirements of GB8502. 6
Mechanical Industry Standard
Technical Specifications for Wheel Loaders
JB/T368821998
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Book Size 880×1230
Print Sheet 3/4
4 Words 14,000
First Printing in November 1998
First Edition in November 1998
Print Quantity 00,001-500
Cost 1000 Yuan
98-213
8668891, its index or requirement shall meet the requirements 100% to be qualified. 5.3.2 For the loaders produced in batches, periodic inspection shall be carried out at least once every two years. The inspection items shall be in accordance with the provisions of 5.1.2, and its index or requirement shall be determined according to the one-time sampling plan of ROL-50, DL=1 in GB2829. The inspection result of item p) in 5.1.2 shall be valid for five years. 5.3.3 The type inspection items shall be in accordance with the provisions of 5.1.3, and its index or requirement shall be determined according to the one-time sampling plan of RQL=40, DL-1 in GB2829.
Note: After the manufacturer and the user reach an agreement, it is allowed to adopt the one-time, two-time and five-time sampling plans of other RQL and DL specified in GB2829, and it is also allowed to adopt the sampling plans specified in GB2828 and other regulations. 6 Marking, packaging, transportation and storage
6.1 The loader shall have a fixed sign in a conspicuous position, and its form and size shall comply with the provisions of GB/T13306. The label shall indicate at least: a) Manufacturer’s name:
b) Product model and name;
c) Product main parameters:
d) Overall dimensions;
e) Product number:
f) Date of manufacture.
6.2 The packaging of the loader and its accessories, spare parts and random tools shall comply with the provisions of JB/T5947 and ensure that they will not be damaged under normal transportation and storage conditions.
6.3 The random documents shall be sealed and packaged with moisture-proof materials, including at least: a) Factory certificate of conformity;
b) Packing list;
c) Instructions for use and maintenance:
d) List of random accessories, spare parts and random tools. 6.4 The transportation of the loader shall comply with the relevant regulations of the transportation department. Without the consent of the manufacturer, the parts of the loader shall not be disassembled during transportation. Before shipment, the manufacturer should carry out the following preparations: a) If necessary, drain the water in the water tank; b) cut off the circuit connecting the battery and the vehicle body. 6.5 The protection and storage of the loader should comply with the requirements of GB8502. 6
Mechanical Industry Standard
Technical Specifications for Wheel Loaders
JB/T368821998
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Book Size 880×1230
Print Sheet 3/4
4 Words 14,000
First Printing in November 1998
First Edition in November 1998
Print Quantity 00,001-500
Cost 1000 Yuan
98-213
866889
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