JB/T 8813-1998 This standard is a revision of ZB J85 017-89 "Steering brake belt for crawler bulldozers". This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging and storage of steering brake belts for crawler bulldozers. This standard is applicable to steering brake belts for clutches of crawler bulldozers, and other variant products can also be used as a reference. JB/T 8813-1998 Steering brake belt for crawler bulldozers JB/T8813-1998 Standard download decompression password: www.bzxz.net

ICS 53.100
Machinery Industry Standard of the People's Republic of China
JB/T8813—1998
Crawler buildozer-Steering brake bands198-09-3Promulgated
China Machinery Industry Bureau
1998-12-01Implementation
JB/T13-199A
This standard is a revision of ZJ85017—Steering brake bands for crawler buildozer. This standard supplements relevant technical requirements when revising ZBJ017…, such as adding product quality, requirements for the appearance of the brake pads, requirements for the connection of the brake bands, etc. From the date of implementation, this standard shall be implemented as of 2B18 Yuanxin 17—89. This standard was proposed and approved by the Engineering Machinery Standardization Technical Committee of the Ministry of Machinery Industry. This standard was drafted by: Tianjin Engineering Machinery Research Institute of the Ministry of Machinery Industry, Turushunuocheng General Equipment Factory, Hebei Yingzhong Hydraulic Factory, and the main drafters of the technical standard are Yang Chengyan, Huang Mengshen and Liu Shihua. 1 Standard
Machinery Industry Standard of the People's Republic of China
Steering brake belt for crawler bulldozers,
Crawler bulldozer-Steeriung bruke landsJB/T8813-1998
18517-9
This standard specifies the classification, technical requirements, test methods, inspection rules, specifications, packaging and storage of steering brake belts for crawler bulldozers.
This standard is applicable to steering brake belts for crawler tractors (hereinafter referred to as brake belts), and other products can also refer to it: 2 Referenced standards
The texts of the following standards are all cited in this standard as the provisions of this standard. When this standard is published, the versions shown are valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest version of the following standards. GR875-86
GB282837
GB 68U7-86
JR/T1666-·1997
IB/T 593591
JB/T5U42-
JB/T594391
JT/T 6931-93
JB/TB17
See Table 1 for brake band types.
Flat head hollow rivets
Speed ​​character checking oil sample procedure and single sample table (applicable to the inspection of injection batches) Technical conditions for chemical treatment of steel workpieces before installation Belt pusher test method
Engineering machinery
General technology for machine processing parts
Engineering machinery
Second-stage machinery
Engineering machinery
Engineering machine locks
General for free-plating parts Technical conditionsbzxZ.net
General technical conditions for welded parts
General technical conditions for steel die forgings
Technical conditions for brake friction pads
Rotary brake belts for crawler bulldozers
3.2 The specifications of the brake belt are determined by the inner diameter D and width of the brake belt in contact with the brake drum of the crawler bulldozer. The basic size of the brake belt should comply with the requirements of Figure 1 and Table 2.
Approved by the State Machinery Industry Bureau on September 30, 1998
Implemented on January 1, 1981
Brake belt welcomes you
36×38
128 ×.14
30G×9G
371×106
371×126
425X101
425×152
42×125
438×50
45G×15/h
.1B/T88131998
1 Book item, 2 thick joint piece: 3
Period punching, 1- connection garbage, 5 movable seat
Basic Xuanjiancun
3.3 Songji
3.3.1 Marking method||tt ||3.3.2 Soft marking example
Brake band
JB/T8813-1998
Standard number
Brake band specification
Type code
The marking of the steering brake band of the high-clutch gearbox of the belt-type bulldozer with a diameter of 450mm and a width of 150mm is, Xiaodong band
4 Technical requirements
G450X150JB/T8813-1SS8
4.1 The brake band and its parts shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved in the specified sequence. The recommended materials and heat treatment hardness of the main parts of the brake band are shown in Table 3. 4.2 Parts Name Brake Band Brake Seat Replacement Plate Note: 15MnMoVN or Han 45 1 Mn is not recommended. 4.3 The technical requirements of the barrier plate shall comply with the provisions of JB/T5942 and J/T6021. 4.4 Brake band welded parts shall comply with the provisions of JB/5943. 4.5
The functional workpiece of the brake band shall comply with the provisions of J, T5936.4.6
The total treatment hardness
Adjustment 220~277 HH
Flash hardness surface allowable 48--55HRC
The original thickness of the friction plate shall not exceed 0.1mm. When inspected on the mold, the gap should be close, and the gap between the parts shall not be greater than 4.7
The inner and outer surfaces of the plate shall be smooth and flat. 4.
There shall be no damage or overlap around the nail hole of the friction plate. 4.10 The steel joint of the same thickness of 1.mm as the rod shall be ~10, and after connection, it shall be allowed to have less than 3 cracks.
4.11 The friction plate shall be firmly connected to the brake band part. There shall be no gap. The film after riveting is intact and fine turtle marks are allowed. 4.12 The brake belt can be opened in a relaxed state without any wear phenomenon. 4.13 The contact area of ​​the brake belt with the brake effect should be greater than 8% when the brake belt is in a folded state, and the contact should be uniform. 4.14 The surface of the welded parts of the brake belt should be pickled and thinned, and then coated with anti-rust or anti-rust primer. If other anti-rust treatment methods are used, it shall be determined by negotiation between the manufacturer and the user.
4.15 Under normal conditions, the service life of the brake belt shall not be less than G000b. 3
5 Test method
JB/T8813-1998
5.1 The basic size and shape and position of the brake belt should be inspected using a special mold and measured under damaged working conditions. 5.2 The pickling and chemical treatment of the outer surface of the brake pad shall be carried out in accordance with the provisions of GB6807: 5.3 The specifications of the narrow wiper shall be carried out in accordance with the provisions of JB 18817. 5.4 The service life test of the brake band shall be carried out in accordance with the site test of the belt-type pusher, especially the test method shall be in accordance with the relevant provisions of JB 166.
Good control inspection rules
6.1 Factory inspection
Each brake band shall be inspected by the manufacturing inspection department before it can be released! The inspection items include the inner diameter size, the contact area with the brake or the brake, and the outer dimensions. .2 Type inspection
6.2.1 The brake band type inspection items shall be in accordance with the provisions of Table 4. Sampling inspection shall be carried out in accordance with the provisions of GB2828. A one-time oil sampling plan shall be adopted. Generally, the qualified quality level shall be determined by the provisions of Table 4 or by negotiation between the supply and demand parties. The sampling rate shall be determined according to the number of brake belt inspection batches. Table 4
The inner diameter, the life of the belt and the drum, the outer hole quality, the material processing degree, and the appearance are measured in Table 4.
6.2.2 During the inspection, if the number of unqualified items in each item is equal or smaller than the corresponding qualified judgment number A, the batch of products shall be marked, packed and stored.
7.1 The mother brake belt shall be packed in corrugated paper. There shall be protective filling material in the box to avoid mutual damage during transportation. 2. Only the returned brake belts are allowed to be packed in the packaging box. 7.3 The accompanying documents in the packaging include product certificate, product instruction manual and installation order. 7.4 The outer surface of the product packaging shall be marked with: a) manufacturer name, trademark, address and zip code, b) product name and specifications, c) date of manufacture or production batch number, and d) name, address and zip code of the consignee. 5 The brake belt of the transfer box should be placed in a well-ventilated room to avoid moisture, heavy magnetic impact, corrosion by brewing and alkaline substances.
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