Transmission brake integrated device for vehicle

Abstract

The invention relates to a transmission brake integrated device for a vehicle, and belongs to the technical field of vehicles. The device comprises a brake positioned in a rim, and a speed reducer, wherein one side of the rim is provided with an open end disk which is fixedly connected with an output flange; friction plates which are distributed at intervals are arranged at one end of the brake close to the end disk; brake discs are arranged between adjacent friction plates; an oil cylinder block is arranged on one side of a friction pair constructed by the friction plates and the brake discs; a travel braking oil cylinder and a parking braking oil cylinder are arranged in the oil cylinder block; a travel piston and a parking piston are arranged in the travel braking oil cylinder and the parking braking oil cylinder respectively; parking springs containing a return mechanism are distributed at intervals along the outer circumference of the parking piston; the speed reducer extends into a cavity in the middle part of the oil cylinder from the open end of the rim; an output shaft on the middle part of the speed reducer is fixedly connected with an output flange; a shell and a brake shell are fixedly connected with a frame. On the premise of ensuring the original functions, the structure can be as compact as possible, and the research and development demands of novel vehicles with narrow structural spaces can be met practically.

Description

technical field [0001] The invention relates to a transmission and braking integrated device, in particular to a vehicle transmission and braking integrated device applied to a new type of automobile, which belongs to the technical field of vehicles. Background technique [0002] With the depletion of oil resources and the improvement of people's awareness of environmental protection, new energy vehicles will become the mainstream of future vehicle development. As far as the applicant knows, in the current development of new energy vehicles, the traditional vehicle transmission system is still used to replace its fuel power unit with a hybrid or pure electric drive unit. Most of the more advanced new energy vehicles at home and abroad, especially the transmission systems of new energy buses, still adopt low-floor axle solutions, that is, separate motors, brakes, accelerators and decelerators are used on traditional low-floor axles. It is complex, and the axle, motor, brake ...

AI Technical Summary

Problems solved by technology

Most of the more advanced new energy vehicles at home and abroad, especially the transmission systems of new energy buses, still adopt low-floor axle solutions, that is, separate motors, brakes, accelerators and decelerators are used on traditional low-floor axles. It is complex, and the axle, motor, brake and reducer respectively occupy the chassis space of the vehicle, and the volume is relatively large, which has a great impact on the overall layout and internal space of the new energy bus, and cannot achieve the ideal low floor, reducing the new energy bus. Advantages of energy buses

In terms of off-road vehicles and special vehicles, traditional vehicles are limited by the structure of the axle and transmission system, and the passability of the vehicle is greatly affected, so they cannot well adapt to special needs.

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