An automatic transmission brake band test device

Abstract

The invention relates to the technical field of brake bands, in particular to an automatic transmission brake band experimental device. The brake band is sleeved on the outside of the clutch, the right end of the clutch is connected to the turntable, the turntable is connected to the positioning disk, the right end of the positioning disk is connected to the rotating shaft on the stand, a fixed sleeve is arranged in the cylindrical shaft of the turntable, and a The torque sensor, the adapter plate is connected with the oil supply pipeline on the stand, the piston push rod is in contact with the stopper at one end of the brake band, the end of the piston push rod is provided with a piston body, and the piston body and the inner wall of the base are provided There is a return spring, and the brake pressure supply oil circuit is connected between the piston cover and the piston body inside the piston cavity through a three-way pipe. This structure can simulate the working conditions of the clutch hub, clutch, brake pressure supply oil and lubricating oil, eliminate the interference factors caused by the parts in the whole machine experiment, and solve the influence of the interference factors of other components in the brake band experiment .

Description

Technical field [0001] The invention relates to the technical field of brake bands, in particular to an automatic transmission brake band experimental device. Background technique [0002] In the process of R&D and design improvement of new automatic transmissions, bench testing is particularly important. Tests can verify and find problems, and can provide important reference for product design. In the past, bench testing of the whole machine was mainly used because the whole machine The test can accurately reflect the true working state of the transmission. However, with the advancement and innovation of technology, the importance of component testing has become more and more prominent. As one of the important components of automatic transmission, the brake belt was mainly used to obtain friction through the whole machine test. Performance data such as coefficient and braking time are subject to many interference factors, such as the influence of the fit tolerances between vario...

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Problems solved by technology

[0002] In the process of new product development and design improvement of automatic transmissions, bench tests are particularly important. Tests can verify and discover problems, and can provide important references for product design. In the past, bench tests were mainly used for complete machines, because The test can accurately reflect the real working state of the transmission, but with the advancement and innovation of technology, the importance of component testing has become more prominent. Brake bands are one of the important components of automatic transmissions. In the past, friction was mainly obtained through machine tests. Performance data such as coefficients and braking time are subject to many interference factors, such as the influence of tolerances between various parts and inaccurate control conditions, etc., which is unfavorable for the study of the performance of a single brake band. The obtained brake band performance data results are often not reliable and not stable enough

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