A hydraulic multi-stage bevel gear automatic transmission controlled by electric servo for vehicles

Abstract

An electric servo controlled hydraulic multistage bevel gear type automatic transmission for a vehicle comprises a driving shaft and a driven shaft, wherein multiple sets of driving gears are installed on the driving shaft, corresponding multiple sets of driven gears are installed on the driven shaft, the driving shaft is connected with a power source, the driven shaft outputs torque, each set ofgears is in a mutually meshed state at certain transmission ratio and corresponds to one gear, a mandrel for automatic gear shifting is arranged in the driving shaft or the driven shaft, one end of the mandrel is connected with an output rod of a movable hydraulic cylinder, and the mandrel is provided with a hydraulic gear oil channel for gear shifting. Different hydraulic gear oil channels on themandrel controls key blocks of the corresponding gears to in a combining state with a driving gear or driven gear through axial movement of the mandrel to achieve gear shifting. The electric servo controlled hydraulic multistage bevel gear type automatic transmission easily achieves automatic gear shifting and has the advantages of few gear engagement and shifting execution elements, simple control system, high gear shifting speed and good reliability.

Description

technical field [0001] The invention relates to the technical field of transmissions, in particular to a hydraulic multi-stage bevel gear automatic transmission controlled by electric servo for vehicles. Background technique [0002] Automated Mechanical Transmission (AMT, Automated Mechanical Transmission) is to replace the clutch manually completed by the driver by adding an electronically controlled automatic operation mechanism under the condition that the basic structure of the traditional fixed shaft and gear transmission remains unchanged. Separation and combination, gear selection, gear removal, and synchronous adjustment of engine speed and other operations, and then realize automatic gear shifting of the transmission. Affected by factors such as transmission power, reliability, and adaptability, the most common application at present is the electronically controlled hydraulic AMT. , it mainly has the following problems: the gear shift actuator mainly adopts an orth...

AI Technical Summary

Problems solved by technology

[0002] Automated Mechanical Transmission (AMT, Automated Mechanical Transmission) is to replace the clutch manually completed by the driver by adding an electronically controlled automatic operation mechanism under the condition that the basic structure of the traditional fixed shaft and gear transmission remains unchanged. Separation and combination, gear selection, gear removal, and synchronous adjustment of engine speed and other operations, and then realize automatic gear shifting of the transmission. Affected by factors such as transmission power, reliability, and adaptability, the most common application at present is the electronically controlled hydraulic AMT. , it mainly has the following problems: the gear shift actuator mainly adopts an orthogonal structure arrangement, and the moving parts need to move in two directions to realize the gear selection and gear shifting actions. Extended; in order to realize the combination of gear axial movement and torque transmission, a synchronizer and a series of auxiliary components need to be installed, and the overall structure is complex; the gear selection actuator and gear shift actuator are controlled by 2-6 hydraulic valves respectively, and the control system is relatively complicated

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