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Actuator for shift transformation of automatic gearbox of heavy type commercial automobile

A technology of automatic transmissions and actuators, applied in the direction of mechanical equipment, components with teeth, transmission device control, etc., can solve the problems of complex shifting operations and unreliable gear positions of mechanical transmissions, and achieve simple and reliable shifting operations. Improved reliability, thrust and pull balance effect

Inactive Publication Date: 2009-11-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of complex shifting operation and unreliable gears of multi-gear mechanical transmissions on heavy-duty commercial vehicles, and proposes a simple executive mechanism for gear conversion of electronically controlled pneumatic mechanical automatic transmissions, which can Reduce the friction of the actuator and improve the reliability of the mechanism

Method used

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  • Actuator for shift transformation of automatic gearbox of heavy type commercial automobile
  • Actuator for shift transformation of automatic gearbox of heavy type commercial automobile
  • Actuator for shift transformation of automatic gearbox of heavy type commercial automobile

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Embodiment Construction

[0016] The present invention consists of three parts: a gear selection actuator, a shift actuator and a housing 12. The gear selection actuator includes a gear selection multi-position cylinder 10 and a displacement sensor 13. The gear selection multi-position cylinder 10 is arranged outside the housing 12, specifically fixed on the upper part of the left side of the housing 12. The gear selection multi-position cylinder 10 is connected with the gear selection solenoid valve 15, and the gear selection solenoid valve 15 controls the intake and exhaust of the multi-position cylinder 10. A gear selection push rod 11 is installed inside the gear selection multi-position cylinder 10, and the gear selection multi-position cylinder 10 promotes the gear selection push rod 11 to move. The displacement sensor 13 is located on the gear selection push rod 11 at this end, and the displacement sensor 13 can detect the moving position of the gear selection push rod 11 . The other end of the...

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Abstract

The invention discloses an actuator for the shift transformation of an electrically-controlled pneumatic mechanical automatic gearbox of a heavy type commercial automobile for road transportation; a shift selection multiposition cylinder and a shift transformation multiposition cylinder are arranged outside a shell respectively; the shift selection multiposition cylinder is communicated with a shift selection electromagnetic valve; the inside of the shift selection multiposition cylinder is provided with a shift selection push rod; the other end of the shift selection push rod is connected with a shift selection push block of the shell; a shift selection block, a spring and a shift transformation gear are sleeved on a spline shaft; the shift selection block is extended into a groove at thelower end of the shift selection push block; the outer end of a rack type push rod is extended into the shift transformation multiposition cylinder; the shift transformation multiposition cylinder iscommunicated with a shift transformation electromagnetic valve; the output of parameters of the operating condition is sequentially connected with an electrical control unit and a drive circuit; andthe output of the drive circuit is connected with the shift selection electromagnetic valve and the shift transformation electromagnetic valve respectively. The actuator can carry out accurate positioning on shift selection stroke and shift transformation stroke, solves the problem of inaccurate stroke control in the process of shift transformation and improves the performance of the shift transformation and the reliability of the actuator.

Description

technical field [0001] The invention relates to an electronically controlled mechanical automatic transmission of a road transport vehicle, in particular to an actuator for shifting gears of an electronically controlled pneumatic mechanical automatic transmission of a heavy-duty commercial vehicle. Background technique [0002] The power transmission part of some heavy-duty commercial vehicles is a mechanical transmission with manual shifting, and the transmission mainly uses a fixed-shaft gear mechanism for power transmission. In order to reduce the number of times the driver manually shifts gears during driving and reduce the driver's labor intensity, on the basis of the main structure of the original manual transmission, an electromechanical automatic transmission with a shift actuator controlled by an electronic control unit is adopted. The electromechanical automatic transmission is equipped with an electronic control unit (ECU), which collects vehicle operating paramet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/28F16H63/30
Inventor 何仁刘文光
Owner JIANGSU UNIV
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