Dry type brake device for automobile transmission

Abstract

The invention discloses a dry type brake device for an automobile transmission. A piston and a brake disc are arranged in a clamp body frame. A rotating shaft of the transmission is sleeved with the brake disc, one end face of the piston abuts against the side face of the brake disc in a clutch manner, and a piston cavity is formed between the other end face of the piston and the inner wall of theclamp body frame. The piston generates a reciprocating action when liquid is pressure-injected into the piston cavity or subjected to pressure-relief, and the brake disc is driven in a clutch mannerby making the piston abut against or leave the brake disc, so that the rotating shaft of the transmission is braked, and the combination-braking or separating-releasing working process is realized; and the device is suitable for external dry type braking of the new energy automobile transmission. The dry type brake device for the automobile transmission has the beneficial effects of being high inreliability, low in energy consumption, rapid in clutch response and capable of reducing production cost.

Description

technical field [0001] The invention belongs to a transmission mechanism braking device, in particular to a braking device applied to an automobile transmission. Background technique [0002] The wet shifting in the traditional transmission housing mainly includes manual fork transmission MT, automatic electronic shifting fork transmission AMT, hydraulic wet friction plate automatic transmission AT and wet dual clutch transmission DCT, and the dry braking outside the housing mainly includes manual gear dry clutch, and some dry dual-clutch transmissions. The shifting time of the shift fork is long, it is difficult to quickly respond to the shifting demand, the power is interrupted and the energy consumption of shifting is high, and it is difficult to quickly and intelligently shift the demand of hybrid and pure electric vehicles, and the wet friction pair and hydraulic system are used, resulting in low transmission efficiency , The hydraulic system consumes a lot of energy a...

AI Technical Summary

Problems solved by technology

The shifting time of the shift fork is long, it is difficult to quickly respond to the shifting demand, the power is interrupted and the energy consumption of shifting is high, and it is difficult to quickly and intelligently shift the demand of hybrid and pure electric vehicles, and the wet friction pair and hydraulic system are used, resulting in low transmission efficiency , The hydraulic system consumes a lot of energy and costs, and it is difficult to adapt to the needs of hybrid and pure electric vehicles. The dry dual clutch has problems such as large moment of inertia and limited transmission torque.

At present, the vast majority of new energy vehicle transmissions use electronic shift forks and synchronizers to shift gears. The shifting time is long, power interruptions occur frequently, and shifting frustration is serious.

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