Clutch executing mechanism of mechanical automatic transmission

Abstract

The invention discloses a clutch executing mechanism of a mechanical automatic transmission, and the clutch executing mechanism comprises a cylinder body, a push rod arranged at the front end of the cylinder body, a valve block fixed at the back end of the cylinder body, a cylinder piston arranged inside the cylinder body, and a piston rod fixed at the front side of the cylinder piston, wherein the piston rod is connected with the push rod, a preloaded spring is arranged between the back side of the cylinder piston and the front end surface of the valve block, the back end surface of the valve block is provided with an air suction solenoid valve, an air exhaust solenoid valve and a position sensor; the back end surface of the cylinder body is provided with an air inlet and an air vent; the air suction solenoid valve is connected with the air inlet via an air suction path of the valve block, the air exhaust solenoid valve is connected with the air vent via an air exhaust path of the valve block; the cylinder piston and the piston rod are provided with communicated holes; the valve block is provided with a through hole which is coaxial with the communicated holes; a signal rod of the position sensor penetrates into the through hole and the communicated holes; and the cylinder piston is provided with a position sensor magnetic ring corresponding to the signal rod. The clutch executing mechanism provided by the invention is compact in arrangement of solenoid valves and sensors, and convenient in mounting and wiring.

Description

technical field [0001] The invention relates to the technical field of automatic transmission actuators, in particular to a clutch actuator of a mechanical automatic transmission. technical background [0002] With the development of automobile technology, automatic transmission technology has gradually entered people's field of vision, and automatic mechanical transmission (AMT, Automated Mechanical Transmission) has become a heavy-duty vehicle automatic transmission due to its advantages of simple structure, low technical difficulty and low development cost. Technology's preferred target. In the AMT system, clutch control is extremely important, and the corresponding clutch actuator is an integral part of it. [0003] The clutch actuator of the current automatic transmission, such as the invention patent "pneumatic AMT clutch actuator" with Chinese patent No. ZL200720088217.8, introduces a clutch actuator. The mechanism includes a cylinder, a piston is arranged in the cy...

AI Technical Summary

Problems solved by technology

[0004] 1) When the piston returns to its position, the volume of the front chamber of the cylinder becomes larger, which will inhale air from the outside, thereby bringing dust and water into the cylinder, which will damage the piston sealing ring in the long run, and eventually lead to failure of the assembly;

[0005] 2) Solenoid valves and sensors are exposed outside the assembly and are easily damaged;

[0006] 3) Solenoid valves and sensors have no connectors, and the layout is relatively loose, the integration is low, and the installation and wiring are more troublesome

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