AMT gear selecting and shifting actuator and transmission

Abstract

The invention is suitable for the technical field of transmissions, and provides an AMT gear selecting and shifting actuator. The MT gear selecting and shifting actuator comprises a gear selecting and shifting shaft, a gear shifting rocker arm, a gear shifting driving assembly and a gear selecting driving assembly, wherein the gear shifting driving assembly drives the gear selecting and shifting shaft to rotate in the axial direction through the gear shifting rocker arm; a sliding shifting block is installed on the gear selecting and shifting shaft in the axial direction in a sliding mode; the gear selecting driving assembly comprises a gear selecting screw rod; the gear selecting screw rod is in threaded connection with a gear selecting screw rod nut, and the gear selecting screw rod nut is clamped with the sliding shifting block; one end of the gear selecting screw rod is connected with a gear selecting motor through a gear selecting coupler; and the gear selecting screw rod is in threaded connection with a sealing plug block, the sealing plug block is located in a concave hole of a shell, the elastic check ring is further installed between the sealing plug block and the gear selecting coupler, external threads are arranged on the peripheral face of the sealing plug block, and internal threads matched with the external threads are arranged in the concave hole. The AMT gear selecting and shifting actuator is high in universality, and transmission of the whole mechanism is simplified; and the workload in the assembly process is reduced, and the assembly cost is reduced.

Description

technical field [0001] The invention relates to the technical field of transmissions, in particular to an AMT gear selection actuator and a transmission. Background technique [0002] Electromechanical automatic transmission (i.e. AMT shift actuator) is upgraded from the traditional manual transmission, which not only achieves high fuel economy and low emission, but also inherits the high efficiency, high reliability and low cost of manual transmission , Simple structure and so on. The selection and shifting mechanisms in electromechanical automatic transmissions are driven by full motor drive, pneumatic drive mechanism, hydraulic drive mechanism, electro-hydraulic drive mechanism, etc. [0003] Among them, the all-motor-driven transmission uses the motor as the driving part to perform gear selection. The output shaft of the motor is connected to the screw through a coupling, and the screw nut is screwed on the screw. The motor drives the screw to rotate, and then drives th...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides an AMT selector and shift actuator and a transmission, aiming at solving the problem that a plurality of circlips need to be trial-assembled in the assembly process of the existing all-motor-driven transmission, so that the actual assembling circlips can be separated from the actual assembly gap. matching question

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