JB/T 8846.1-2001 This standard is a revision of JB/T 8846.1-1999 "Technical conditions for wet steering clutches of crawler bulldozers". During the revision, test methods and inspection rules, mechanical performance parameters of parts were added; technical requirements for reliability and cleanliness were supplemented; the materials of some castings were changed. This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of wet steering clutches of crawler bulldozers. This standard is applicable to multi-plate wet steering clutches of crawler bulldozers above 103kW. This standard was first issued in June 1987 as ZB J85 007.1-87, and the standard number was adjusted to JB/T 8846.1-1999 in 1999. This is the first revision. JB/T 8846.1-2001 Technical requirements for wet steering clutch of crawler bulldozers JB/T8846.1-2001 Standard download decompression password: www.bzxz.net

ICS 53.100
Machinery Industry Standard of the People's Republic of China
Crawler type bulldozer-Wet type steering clutchtechnicalspecifications
2001-(4-03 Issued
China Machinery Industry Federation
2001-10-01 Implementation
JB.T8846.1-2001
This standard is a revision of JB.T8846.1-1999 Technical Conditions for Wet Steering Clutch of Slow-belt Bulldozer. Compared with JB.T8846.1-1999, the main technical changes in this standard are as follows: the acid test method and inspection rules are added; the technical requirements for clutch assembly reliability and cleanliness are supplemented; the mechanical performance parameters of each part are added to Table 1; in order to improve product quality, the material of the iron parts in some parts is changed to ball-type iron. This standard will replace JB.T8846.1-1999 from the date of implementation. This standard is issued by the Machinery Industry Industry Light Machinery Standardization Technical The committee proposed that the standard should be unified. The originating units of this standard are: Tianjin Engineering Machinery Research Institute, Yingkou Kahua, Mining Equipment Parts Factory, Yingkou Engineering Machinery Clutch Factory Tianjin Ru Si Si Yun Factory.
The main drafters of this standard are: Yang Cheng, Hu Lianman. This standard was first issued in June 1987 as 2BJ85007.1-87, and the standard number was adjusted to [B/8846.1-1999 in 1999. This is the first static revision.
1 Scope
Mechanical Standards of the People's Republic of China
Crawler type bulldezer-Wet type steerlng clutchtechnical conditions
Crawler type bulldezer-Wet type steerlng clutchtechnical conditions Specificatinns
JH/T8846.1—2001
JH/8R46.1-.1999
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of crawler bulldozer wet steering clutches (hereinafter referred to as wet clutch groups). This standard is applicable to multi-plate wet steering clutches of crawler bulldozers above 103kW. 7 Referenced standards
The provisions contained in the following standards constitute the text of the standard by reference in this standard. , when this standard is published, the versions shown are valid. All standards are subject to revision. Parties using non-standard standards should explore the possibility of using the following standards to measure the latest versions, GB.T1239.4—1989
GB/T2828—1987
GB/T10095—1988
JB/T1666—199TWww.bzxZ.net
JB/T3063—1996
JB/T5938—1991
JH/T5942—1991
JB/T 6031—1992
:JB/T71581993
JBT72681994
3 Technical requirements
Technical conditions for hot-rolled springs
Counting sampling procedures and sampling tables for batch inspection (applicable to inspection of continuous batches)
Type test methods for cylindrical gear precision parts
Technical conditions for sintered metal parts
General technical conditions for ductile iron parts of engineering machineryGeneral technical conditions for self-forging parts of engineering machineryTechnical conditions for copper molds of engineering machinery
Determination of cleanliness of engineering machinery parts and componentsForce method for testing the friction properties of metal friction materialsThe overrunning clutch shall comply with the provisions of this standard and shall be manufactured according to the product samples and technical documents approved through the prescribed procedures. 3.1:
3.2 The mechanical properties of the main zeros of the explicit clutch shall comply with the provisions of Table 1. 3.3 In addition to meeting the technical requirements indicated in the drawings, castings and forgings shall also comply with the provisions of JB/T5938, JBT5942 and JB/T603I respectively: 3.4 The shape and position tolerances, surface roughness and dimensional accuracy of the main parts of the explicit clutch shall comply with the requirements of the detailed drawings, and the gear accuracy level shall be above level 10 in GB/T10095.
3. In addition to meeting the technical requirements indicated in the drawings, the internal and external elastic materials shall also comply with the relevant provisions of A-T1239.4. 3.6 The friction plate of the clutch shall use sintered gold bottom friction plate material, and its physical and mechanical properties shall comply with the provisions of JBT3063.
China Machine Tool Industry Federation approved 2001-04-03 implementation of 2001-1-01
Parts name
Seven driving shoes
Friction plate
Inner spring
Outer spring
Sealing ring
Material number
QT500-7
FM-101S
FM-102S
60S12MnA
60Si2CrA
Note: Material brand is used as reference
JB/T 8B46.1--2001
3.? The main parts of the wet clutch should be cleaned and dried. The deactivation degree of the wet clutch assembly shall not be higher than 8mg/mL: HB
170-230
3. There shall be no cracks, oil stains, spots and rust on the non-processed surface of the casting. The parts shall be painted with paint, and the paint film shall be uniform without wrinkles, rust and other phenomena.
3.9 The surfaces of the inner plate, spring, lock plate, bolts, etc. shall be treated with anti-rust treatment. 3.10 The clutch after adjustment can be separated completely. The engagement is smooth and the maximum torque of the bulldozer should be transmitted when it is fully engaged. When the secondary clutch is separated, that is, the driven brake is applied, the bulldozer can turn smoothly in place. 3.11 The mean time between failures (M1HF) shall not be less than 500h. 3.12 The service life of the plate shall not be less than 3000h, and the service life of the clutch shall not be less than 4000h. 4 Test methods
4.1 The mechanical properties of the hybrid clutch parts and general parts shall be tested in accordance with the provisions of JB/T5938, JB/T5942 and JB/T6031. 4.2 The cleanliness test of the wet clutch assembly shall be carried out in accordance with the provisions of JB/T7153. 4.3 The inspection of the original wiper of the wet clutch shall be carried out in accordance with the provisions of JB/T7268. 4.4 The steering performance and reliability of the wet clutch shall be tested on the spot with the main engine and in accordance with the relevant provisions of IB/T1666. 5 Inspection schedule
5.1 Delivery inspection
Each set of wet clutch must be inspected and qualified by the inspection department of the manufacturer before it can be shipped. The inspection items include appearance quality, external dimensions and fitting quality.
5.2 Type inspection
The type inspection of the wet clutch is shown in Table 2. Sampling inspection is carried out in accordance with the provisions of GB/T2828, using a single positive belt sampling plan, and special inspection level S-3 is used for Class A unqualified products, and general inspection level II is used for Class B and Class C unqualified products. The combined quality level (AQL) is determined in accordance with the provisions of Table 2 or by negotiation between the supply and demand parties. During the inspection, if the number of unqualified items in each item is equal to or less than the corresponding qualified judgment number (A-), then the batch of products is accepted, otherwise it is rejected. 2
A Safety unqualified
Classification
Core unqualified
Feasibility
High performance
JB/T8846.1—2001
Comparative inspection and
Main parts mechanical properties
Overall dimensions
Main performance
Main dimensions and dimensions of the product
Parts shape and position of the device
Assembly quality
Anti-chain treatment
External quality points
Main parts surface roughness
6 Marking, packaging, transportation and storage
6.1 The wet clutch should be marked with the manufacturer's name or factory logo, and the specifications of the clutch. Inspection level
6.2 Each wet clutch should be rust-proof before packaging, and wrapped with strong, non-water-transmitting neutral paper or plastic film before being packed into the packaging box.
6.3 The packaging box should be accompanied by a product certification and packing list. 6.4 The packaging box should be marked with:
a) manufacturer's name, address and zip code;
b) product name, model and specifications;
weight and total weight;
d) "Be careful", "Do not get wet" and other signs;
date of manufacture
6.5 The packed wet clutch should be stored in a ventilated and dry warehouse under normal storage conditions. The clutch should be guaranteed to be free of rust for 12 months from the date of leaving the factory.
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