Mechanical automatic transmission selector shift actuator

Abstract

The invention relates to a gear-selecting and shifting actuating mechanism for an automatic mechanical transmission case and belongs to the field of automobile components. The gear selecting-shifting actuating mechanism comprises a gear-selecting mechanism and a gear-shifting mechanism; a gear-selecting piston is arranged in a gear-selecting operating oil cylinder in the gear-selecting mechanism and is connected with a gear selecting-shifting shifting head in a matching manner; the gear selecting-shifting shifting head is sleeved on a gear-selecting and shifting shaft; gear-shifting piston rods are arranged in a left cylinder and a right cylinder of a gear-shifting operating oil cylinder in the gear-shifting mechanism; a first piston sleeve is arranged in the left cylinder of the gear-shifting operating oil cylinder; a second piston sleeve is arranged in the right cylinder of the gear-shifting operating oil cylinder; the sum of the areas of the left end parts of the gear-shifting piston rods and the working surface of the first piston sleeve in the left cylinder of the operating oil cylinder is equal to that of areas of the right end parts of the gear-shifting piston rods and the working surface of the second piston sleeve in the right cylinder of the operating oil cylinder; the middle bottoms of the gear-shifting piston rods are hinged with a gear-shifting shifting block; and the gear-shifting shifting block is sleeved on the gear-selecting and shifting shaft. The gear-selecting and shifting actuating mechanism has the benefit that the gear-selecting and shifting action can be frequently performed within a short time, so that the operation strength of a driver is greatly reduced.

Description

technical field [0001] The invention relates to an automobile component, in particular to a gear selection and shifting actuator of a mechanical automatic transmission. Background technique [0002] For the mechanical automatic transmission, it retains the original basic components such as the synchronizer, and uses electronic control technology to transform the traditional control system to realize automation. Generally, there are three driving modes: electric-hydraulic, electric-pneumatic and all-electric. [0003] When the working piston in the working cylinder of the shifting device in the current selection and shifting actuator is displaced left and right, the area of ​​the working surface is not equal, resulting in unequal pressure, which has an impact on the life of the piston and the working cylinder, and the structure It is more complicated, the inheritance of production is not good enough, and the investment cost of transformation is high. Therefore, it is very b...

AI Technical Summary

Problems solved by technology

[0003] When the working piston in the working cylinder of the shifting device in the current selection and shifting actuator is displaced left and right, the area of ​​the working surface is not equal, resulting in unequal pressure, which has an impact on the life of the piston and the working cylinder, and the structure It is more complicated, the production inheritance is not good enough, and the investment cost of transformation is high

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