Pneumatic shift multi-point soft positioning mechanism
A technology of pneumatic shifting and positioning mechanism, which is applied in the field of shifting mechanism for pneumatic shifting of transmission, and can solve the problems of gearbox damage, traffic accident, large operating force, etc.
Active Publication Date: 2017-02-08
DALIAN NATURE MACHINERY ELECTRONICS EQUIP +1
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Problems solved by technology
[0002] In vehicles with rear-mounted gearboxes, vehicles with manual shifting usually use a connecting rod or cable mechanism to complete the shifting. Due to the long transmission distance, a large operating force is required, and accurate coordination of hands and feet is required to complete the shifting operation. Mistakes will cause damage to the gearbox and serious traffic accidents
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[0022]The so-called soft positioning, that is, the movement stop position of the shift cylinder is determined comprehensively by the Hall sensor and the ventilation mode, and the stroke of the shift cylinder only acts as a limit position. The pneumatic shift multi-point soft positioning mechanism of the present invention is composed of a shift cylinder and a position selection cylinder, and the shift cylinder and the position selection cylinder are installed on the transmission case in an orthogonal manner in space. On the premise that the structure of the gear shifting cylinder remains unchanged, the gear shifting of different gears can be realized in the same gearbox only by changing the position selection cylinder mechanism. Now in conjunction with the accompanying drawings, the specific implementation of the patent will be described in detail.
[0023] like Figure 4~Figure 7 Shown is the part of the shift cylinder, the position selection cylinder and the shift cylinder a...
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The invention provides a pneumatic shifting multipoint soft positioning mechanism. A gear shifting cylinder assembly and a gear selecting cylinder assembly are added to an upper cover assembly under the condition that a mechanical gear transmission main body is not changed; pneumatic pistons which are arranged in cylinders are controlled and accordingly gear selection and gear shifting can be controlled; meanwhile the soft positioning can be achieved through the change of gear selecting cylinders according to the different requirements of the gear control number of a gear box, wherein the soft positioning of five gear control can be achieved only through the single cylinder and the soft positioning of six gear control can be achieved only through adding of the double cylinders; the compressed air required by the pistons is provided by a vehicle air source and controlled by electromagnetic valves; the electromagnetic valves are controlled by ECUs of an EPS system in turn; the ECUs can determine whether gear shifting of a transmission can be performed or not according to the vehicle speed, the rotation speed of an engine, a gear to be changed and the separation condition of a clutch and the integral gear shifting process can be controlled; meanwhile the operation which is against gear shifting operation procedures is not executed and accordingly the gearbox and driving safety can be protected.
Description
technical field [0001] The invention relates to the technical field of gear shifting of an electronically controlled mechanical automatic transmission for automobiles, in particular to a gear selection mechanism for pneumatic gear shifting of the transmission. Background technique [0002] In vehicles with rear-mounted gearboxes, vehicles with manual shifting usually use a connecting rod or cable mechanism to complete the shifting. Due to the long transmission distance, a large operating force is required, and accurate coordination of hands and feet is required to complete the shifting operation. Mistakes will cause damage to the gearbox and serious traffic accidents. With the rapid development of electronic technology and the in-depth study of shifting theory, the way of car shifting has gradually evolved from manual shifting to automatic shifting, which is realized through automatic transmissions. The automatic transmission is realized by adding a gear selection actuator ...
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IPC IPC(8): F16H61/34
CPCF16H61/30F16H61/34F16H2061/301
Inventor 刘欣董清伟
Owner DALIAN NATURE MACHINERY ELECTRONICS EQUIP