Gear-selecting and gear-shifting executive mechanism for automatic transmission

Abstract

The invention relates to an actuator for selecting and exchanging gear of automatic transmission, comprising body, selector equipment, gear shift, control valve block. Selector oil cylinder of said selector equipment is assigned with exchanging oil cylinder of said gear shift in orthogonality. It is characterized in that said selector equipment, gear shift and control valve block is formed into a total part and is collected on said body, the equipment is connected with clutch mechanism and power resource by system oil pipe. The invention is provided with compact structure, good integrity, easily manufacturing, low cost and high stability. The actuator for selecting and exchanging gear is added on the mechanical transmission and there is almost no any change for mechanical transmission. The high transmission efficiency of mechanical transmission is maintained. The invention is commonly used to mechanical speed-changing box with different structure, especially the mechanical speed-changing box of automobile.

Description

technical field [0001] The invention relates to an actuator of a transmission, in particular to an actuator for selecting and shifting gears in an automobile transmission. Background technique [0002] Due to the disadvantages of low efficiency, complex structure, and high manufacturing cost in the hydraulic automatic transmission used in automobiles, people try to realize automation on the fixed manual transmission with high efficiency and simple structure, so the electronically controlled mechanical automatic transmission is developed. transmission. At present, the gear selection and clutch actuators of traditional electronically controlled mechanical automatic transmissions adopt the integrated flow channel plate type composed of upper and lower valve plates. The gear selection cylinder is connected to the back of the integrated flow channel plate through hollow screws, and the solenoid valve group It is connected to the front of the integrated flow channel plate. This s...

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Problems solved by technology

[0002] Due to the disadvantages of low efficiency, complex structure, and high manufacturing cost in the hydraulic automatic transmission used in automobiles, people try to realize automation on the fixed manual transmission with high efficiency and simple structure, so the electronically controlled mechanical automatic transmission is developed. transmission

At present, the gear selection and clutch actuators of traditional electronically controlled mechanical automatic transmissions adopt the integrated flow channel plate type composed of upper and lower valve plates. The gear selection cylinder is connected to the back of the integrated flow channel plate through hollow screws, and the solenoid valve group It is connected to the front of the integrated flow channel plate. This structure has the following disadvantages: First, the upper and lower valve plates require high precision, difficult processing, and difficult to manufacture; The size of the actuator is increased, and the cost is high; the third is that the selection and shift displacement sensors are assembled on the selection and shift plunger in the form of independent components, thereby introducing assembly errors

[0003] The electronically controlled mechanical automatic transmission has two control methods: electric-hydraulic / gas and electric motor. Due to the compressibility of the gas volume, the shifting speed is slow; while the electric control type is composed of the electric motor, the gear pair for deceleration and torque increase, and the electric motor. Drives and other components, this mechanism is difficult to manufacture, high cost, and has relatively high requirements on the electrical system of the vehicle. In addition, vibration and impact will occur during the shifting process, which will have a negative impact on the comfort of the ride and the life of the parts. influences

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