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Screw rod gear selecting and gear shifting mechanism

A shifting mechanism and shifting technology, applied to mechanical equipment, components with teeth, belts/chains/gears, etc., can solve problems such as inconvenient control and complex structure

Inactive Publication Date: 2012-09-19
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a tractor electronically controlled mechanical automatic transmission gear selection mechanism with compact structure, easy installation and convenient operation, so as to solve the problems of complex structure and inconvenient control of existing mechanisms

Method used

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  • Screw rod gear selecting and gear shifting mechanism
  • Screw rod gear selecting and gear shifting mechanism
  • Screw rod gear selecting and gear shifting mechanism

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] Such as figure 1 A gear selection and shifting mechanism for tractors is shown, including a gear selection mechanism and a gear shifting mechanism. The gear shifting mechanism includes a gear shifting shaft 9, and the shifting finger 8 is engaged with the gear shifting shaft 9 through a spline in anti-rotation, and Can do axial sliding along the shift shaft 9. A shift fork 81 is fixed at the lower end of the shift finger 8, and three shift fork shafts 12, 14, 15 perpendicular to the shift shaft are arranged in parallel corresponding to the shift fork 81.

[0013] The gear selection mechanism is a screw rod gear selection mechanism, including a screw rod 4 arranged parallel to the shift shaft 9. A screw nut 5 is assembled on the screw rod 4, and the screw nut 5 is welded to one end of a driven rod 6, and the driven rod 6 is fixed by welding. The other...

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Abstract

The invention relates to a screw rod gear selecting and gear shifting mechanism, comprising a gear selecting mechanism and a gear shifting mechanism. The gear selecting mechanism is a screw rod gear selecting mechanism, and comprises a screw rod with the rotating axis parallel with a gear shifting shaft; a nut making linear motion along the rotating axis when the screw rod rotates is assembled on the screw rod, the nut is in transmission connection with a gear shifting fingerstall through a driven rod fixed with the nut, and the gear shifting fingerstall is axially assembled on a gear shifting finger along the gear shifting shaft in a limiting and rotating mode. The gear selecting mechanism is a screw rod-nut mechanism, wherein the nut is driven to make linear motion through driving the screw rod to rotate, the nut drives the gear shifting finger to slide along the gear shifting shaft through the driven rod, and the gear shifting finger glides to a position corresponding to a shifting fork shaft, therefore, gear selecting is realized. The gear shifting mechanism comprises a gear shifting shaft and a gear shifting finger matched with the gear shifting shaft through a spline. When the gear shifting shaft rotates, the gear shifting finger is driven to rotate so as to drive a shifting fork, and the corresponding shifting fork shaft is turned to move to a proper gear so that gear shifting is realized.

Description

technical field [0001] The invention relates to the field of wheel shifting mechanisms, in particular to tractor electronically controlled mechanical shifting mechanisms. Background technique [0002] In recent years, with the advancement of vehicle automatic transmission technology, the research on automatic transmission products in our country has been greatly developed, and different types of automatic transmissions have appeared one after another. Tractors need a large shifting force when shifting gears, and the frequent operation of traditional manual shifting is likely to cause driver fatigue. The application of automatic transmission on tractors and the research on automatic transmission technology of tractors have been paid more and more attention. Most of the gear selection and shifting mechanisms of electronically controlled mechanical automatic transmissions for vehicles in the prior art are hydraulically controlled, and generally adopt dual hydraulic cylinders X...

Claims

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Application Information

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IPC IPC(8): F16H61/34F16H25/20
Inventor 周志立丁金全徐立友赵剡水郗建国刘益滔曹付义席志强牛毅
Owner HENAN UNIV OF SCI & TECH
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