Integral low-latency intermediate shaft brake

Abstract

The invention relates to an integral low-latency intermediate shaft brake. The integral low-latency intermediate shaft brake is mounted at the front end of a transmission intermediate shaft and comprises a brake shell connected with a transmission shell. Three gas paths are formed on the brake shell, and one end of the first gas path is plugged. A quick release valve, a piston, five friction plates, five steel sheets and an ejector pin pressed into the piston are arranged in the brake shell. The simple-structure quick release valve device is integrated in the control gas path, when braking isrelieved, a brake gas cylinder exhausts gas, a solenoid valve is controlled not through the brake, the quick release valve directly exhausts gas, the retardation time for relieving brake is shortened,and the system response speed is increased; the integrated structure is adopted, the quick release valve, the piston, the friction plates, the steel sheets and the like are integrated in the brake shell, the system integration level is high, adaptability is strong, and convenience of assembling and maintenance is improved; and the dual sealing structure is adopted by the piston, gas and oil sealing of the two sides of the piston is achieved through two identical Y-shaped sealing rings, sealing is achieved reliably, and cost is low.

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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