Integrated low-latency intermediate shaft brake

Abstract

The invention relates to an integrated low-delay intermediate shaft brake, which is installed at the front end of the intermediate shaft of a transmission, and includes a brake housing connected with the transmission housing. The brake housing has three air passages, and one end of the air passage I is blocked. , a quick-release valve, a piston, 5 friction plates, 5 steel plates, and a top pin pressed into the piston are arranged in the brake housing; a quick-release valve device with a simple structure is integrated in the control air circuit of the present invention. , the exhaust of the brake cylinder is no longer controlled by the brake solenoid valve, but is directly exhausted by the quick release valve, which shortens the lag time of releasing the brake and improves the system response speed; the invention adopts a highly integrated structure, combining the quick release valve, Pistons, friction plates, steel plates, etc. are integrated in one brake housing, with high system integration and strong adaptability, which improves the convenience of assembly and maintenance; the piston of the present invention adopts a double-channel sealing structure, through two identical Y-shaped sealing rings Realize gas and oil sealing on both sides of the piston, reliable sealing and low cost.

Description

technical field [0001] The invention belongs to the technical field of a mechanical automatic transmission (AMT) without a synchronizer for a commercial vehicle, and relates to an integrated low-delay intermediate shaft brake used for adjusting the rotational speed of a commercial vehicle transmission. Background technique [0002] At present, some mechanical automatic transmissions do not have synchronizers and use sliding gear sleeves to shift gears. When upshifting, the speed of the intermediate shaft needs to be reduced to a reasonable speed range in order to achieve smoother gear meshing and gear shifting. The intermediate shaft brake can realize the deceleration function, and the intermediate shaft brake has its own mechanical characteristics, and the braking control of the brake to the speed of the intermediate shaft of the transmission has a hysteresis in response. Therefore, when the brake is released, the brake has a time-delay property and will continue to maintai...

AI Technical Summary

Problems solved by technology

The existing intermediate shaft brakes used at home and abroad have a long response time for releasing the brake, are not easy to control accurately, and are prone to "over-braking phenomenon", resulting in gear shift failure

[0003] In addition, the intermediate shaft brakes used at home and abroad are mostly split, that is, parts such as friction plates and steel plates need to be assembled to the transmission assembly in a scattered manner.

As a result, the assembly and maintenance of the transmission assembly are inconvenient

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