This standard specifies the structure and dimensions, technical requirements, test methods, inspection rules, marking, packaging and transportation of sealed track assemblies for crawler bulldozers. JB/T 5932.1-1991 Sealed track assemblies for crawler bulldozers JB/T5932.1-1991 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T5932.1～5932.5-91
Crawler Bulldozer
Sealed crawler track assembly and parts
Published on December 17, 1991
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implemented on July 1, 1992
JB/T 5932.1--91
JB/T5932.2—91
JB/T 5932. 3-—91
JB/T 5932.4-91
JB/T5932.5-91
Crawler bulldozer
Crawler bulldozer
Crawler bulldozer
Crawler bulldozer
Crawler bulldozer
Sealed track assembly
Sealed track link
Strip plate for sealed track
Sealed track pin and pin Set
Track Bolts
Machinery Industry Standard of the People's Republic of China
Crawler Bulldozer
Sealed Track Assembly
Subject Content and Scope of Application
JB/T5932.1—91
This standard specifies the structure and dimensions, technical requirements, test methods, inspection rules, marking, packaging and transportation of the sealed track assembly for crawler bulldozers.
This standard is applicable to combined sealed crawlers with pitches of 203.2, 216, and 228.6 mm. Other crawler engineering machinery can refer to this standard.
2 Reference standards
JB/T5932.2
JB/T5932.3
JB/T5932.4
JB/T5932.5
ZBJ8S004.2
GB2828
GB 9174
JB/SQ58
3 Structure and dimensions
3.1 Structure and dimensions
Crawler bulldozer
Belt-type bulldozer
Crawler bulldozer
Crawler bulldozer
Spread-belt bulldozer
Sealed track link
Track shoes for sealed tracks
Sealed track pins and bushings
Track bolts
Nuts for tracks and gear blocks
Batch-by-batch inspection counting sampling procedure and sampling table (applicable to inspection of continuous batches) - General technical conditions for general cargo transport packaging
Crawler bulldozer Quality classification of combined crawler assembly The structural schematic diagram of the crawler assembly is shown in Figure 1. The main dimensions should comply with the requirements of Figure 1 and Table 1. Table 1
W (reference size)
460,510,560
510,560,610,660
560,610.660.710
Note: The end face of the locking pin sleeve and the matching chain track section are in the same plane, J=0. Approved by the Ministry of Machinery and Electronics Industry on December 17, 1991. Implemented on July 1, 1992. 1- Track joint (JB/T5932.2);
JB/T5932.1-91
2- Locking sleeve (JB/T5932.4);
4- Seal (Appendix A of this standard);
7- Track shoe (JB/T5932.3);
3.2 Marking example
Track pitch t=216mm,
Track assembly 216-560-38
4 Technical requirements
5-pin shaft (JB/T5932.4);
8 bolts (JB/T5932.5);
Track shoe width W=560mm,
JB/T5932.191
The assembly and appearance quality of the crawler assembly shall comply with the provisions of Table 2, Table 2
Forward rotation angle (between two sections)
Reverse rotation angle (between two sections)
Track section Straightness after press-fitting
Rotation performance
Bolt assembly requirements
3-locking pin (JB/T5932.4);
6-pin sleeve (JB/T5932.4)www.bzxz.net
9-nut (ZBJ85004.2)
38-section track assembly:
≥26°30
Every 10 sections: <4mmIn the whole length: <8mm
Rotation should be flexible, and there should be no interference between adjacent belt plates and chain track sections. Tightening torque according to JB/T5932.5 Table 3, after installation, the end size of the screw rod is shown in Figure 2
Sealing
JB/T5932.191
Continued Table 2
Mud and sand shall not enter between the pin shaft and the pin sleeve
Grease shall be applied between the pin sleeve and the pin shaft
The assembly shall not have defects such as leakage and cracks
4.2 Each part of the crawler assembly shall comply with the provisions of JB/T5932.2~5932.5 and ZBJ85004.2 and Appendix A (supplement) of this standard.
5 Test method
Straightness detection of the track link after press-fitting
Measure at the inner side of the track surface near the pin sleeve. When measuring, the track link shall be tightened and leveled; or the assembly shall be pushed open and leveled while measuring the straightness of the inner side.
5.2 Test of rotation performance and rotation angle
The crawler assembly should be lifted vertically and naturally straightened. Check that each section cannot be bent (the two sections at the end are allowed to be bent). Then turn the assembly to measure the positive and negative rotation angles between two adjacent sections. 6 Inspection rules
Factory inspection
The sampling inspection items, classification and qualified quality level (AQL) of the crawler assembly shall be in accordance with the provisions of Table 3. Table 3
Tightening torque
Side clearance J
Other assembly and appearance requirements and dimensions of each item 2.5
6.1.2 Sampling inspection shall be carried out in accordance with GB2828, using a sub-sampling plan and a general inspection level of 1. The sample size code shall be determined by the manufacturer according to the production batch, or by negotiation between the supply and demand parties. During the inspection, if the number of defects in each item is equal to or less than the corresponding qualified judgment number (Ac), the batch of products shall be accepted, otherwise it shall be rejected. 6.2 Type inspection
The rules for type inspection shall be in accordance with the provisions of JB/SQ58. Marking, packaging and transportation
JB/T 5932.191
7.1 The track assembly can be shipped after assembly, or the track shoes can be bundled separately for shipment. They should be firmly bundled during shipment. 7.2 When the track shoes are shipped separately from the assembly, the track bolts, nuts, locking pins, seals and other parts should be shipped in packaging boxes. The parts should be clean when packed, and there should be waterproof paper in the box, and the packaging box should be firm and reliable. 7.3 The bundling packaging and box packaging should comply with the provisions of GB9174. The packaging type and protection method of the packaging box should be determined by negotiation between the supply and demand parties according to the storage and transportation conditions.
7.4 The packaging box should contain a packing list and product certificate. The certificate of conformity shall include the following contents: a.
Manufacturer name and address:
Product name and specification;
Manufacture date (or number);
Inspector signature and seal.
The shipping mark on the packaging box shall indicate the following contents: a.
Parts name, specification, quantity:
Batch number and box number (or contract number);
Box size (length × width × height):
Net weight and gross weight;
Packing date:
Arrival station (port) and consignee;
Departure station (port) and consignee
7.6 From the date of shipment, the manufacturer shall ensure that the product will not be rusted, damaged or lost due to improper packaging for at least one year under normal storage and transportation conditions.
A1 Type and structural dimensions
JB/T5932.191
Appendix A
High-quality belt seals
(Supplement)
The types and structural dimensions of track seals are shown in Figure A1, and the applicable occasions are shown in Table A1. Type D
51280/
Technical requirements
JB/T5932.191
For ordinary pins and bushings with a pitch of 203.2mmFor ordinary pins and bushings with a pitch of 216mmFor field
For 203.2 and 216mm pitchDent purple pins and bushingsFor ordinary pins and bushings with a pitch of 228.6mmFor locking pins and bushings with a pitch of 228.6mmFor 228.6mm pitch6mm pitch, suitable for use with D and E types.
The materials and properties of A, B and C type track seals are shown in Table A2; the materials and heat treatment requirements of D, E and F type track seals are shown in Table A3.
Shore A
Tear strength
Elongation at break
100% modulus
Tear strength kN/m
National elasticity
Hot air aging
(80℃×70h)
Hardness change Shore A degree
Tear strength change (maximum)%
Tear elongation change (maximum)
Permanent compression set
Viscosity
Water absorption%
Surface hardness
Hardened layer
Heat treatment deformation
Type A, B
Polyurethane rubber|| tt||≥400
≥>140
-2～+2
Type D, E
45Cr(GB3077)
52~60HRC
0.8mm(>50HRC)
The flatness of each plane is less than 0.2mm
Foamed polyurethane rubber
≥200
Polyurethane rubber
85(GB1222)
45±3HRC
Additional instructions:
JB/T5932.191
This standard is proposed and managed by Tianjin Engineering Machinery Research Institute. This standard is drafted by Tianjin Engineering Machinery Research Institute. The main drafters of this standard are Hao Runcai and Li Mingxiang.
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