Mechanical-hydraulic interactive continuously variable transmission

A continuously variable transmission, interactive technology, used in mechanical equipment, transmission devices, fluid transmission devices, etc., to achieve the effects of excellent high-speed transmission performance, control of heat generation, and simple structure

Inactive Publication Date: 2011-08-17
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Secondly, due to the limitation of structural principles, most of them can only be used on light cars with small transmission power.

Method used

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  • Mechanical-hydraulic interactive continuously variable transmission
  • Mechanical-hydraulic interactive continuously variable transmission
  • Mechanical-hydraulic interactive continuously variable transmission

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Experimental program
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Embodiment Construction

[0060] The present invention is characterized in that it contains: an input part 16, an output part 1, a planetary gear transmission part 30, a combined hydraulic pump 31 and a variable hydraulic motor. The basic working principle of the present invention is that after the input shaft 16 inputs power, the output shaft 1 does not necessarily rotate or slowly rotate due to the effect of the load. At the same time, it rotates at a higher speed. From the analysis of the motion relationship of the planetary shaft gear 26 relative to the ring gear, it can be seen that when the rotational speed of the input shaft 16 driving the planetary shaft gear 26 to revolve is constant, the slower the rotation speed of the planetary shaft gear 26, the faster the rotational speed of the output shaft 1, When the rotation speed of the planetary shaft gear 26 is zero, the rotational speed of the output shaft 1 is equal to the rotational speed of the input shaft 16 , and the transmission speed ratio ...

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PUM

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Abstract

A mechanical-hydraulic interactive continuously variable transmission comprises an input part, a combined hydraulic pump (31), an epicyclic gear transmission part (30) and an output part that are sequentially connected, wherein the output part comprises a hydraulic motor and an output shaft (1); the combined hydraulic pump (31) and the hydraulic motor form a hydraulic system through a hydraulic circuit; the input part drives the combined hydraulic pump (31) through the epicyclic gear transmission part (30); the combined hydraulic pump drives the hydraulic motor to rotate through the hydrauliccircuit; the hydraulic motor and the epicyclic gear transmission part (30) simultaneously drive the output shaft (1) to rotate; and the output shaft (1) serves as the output of the whole continuouslyvariable transmission. The adoption of the structure can realize stepless continuous change and speed change does not need the separation and shift of gears. Besides, the speed ratio can be accurately controlled, and the continuously variable transmission can be used for any mechanical equipment needing speed change, especially for automobiles.

Description

technical field [0001] The invention relates to the field of stepless speed change, and can also be used as a soft start device for starting with load. Background technique [0002] In various fields where mechanical equipment is used, most of the systems that need to transmit speed and power need speed change devices. At present, there are two kinds of speed changers: stepped speed change and stepless speed change. Although the structure of the stepped speed changer is relatively simple, the speed change is discontinuous, has jumps, is not stable, and the speed change control is more loaded down with trivial details. Continuously variable transmissions are stable and soft, and can perform continuous transmission within a certain range, but often have complex structures and high manufacturing costs. Especially in the automotive industry, continuously variable transmissions can only be equipped on some high-end and luxurious cars. rise. In addition, whether there is a step ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H47/04
Inventor 李生录李双寿李睿傅水根李军利
Owner TSINGHUA UNIV
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