Brake-linkage stepless speed change control handle returning mechanism

Abstract

The invention belongs to the technical field of agriculture, and particularly relates to a brake-linked continuously variable speed control handle return mechanism, which includes a pillar body, an arm seat is arranged in the middle of the pillar body, an arm shaft is arranged on the arm seat, and an arm shaft is arranged on the inner side of the arm seat. A spring seat, a linkage seat is set under the spring seat, a pin shaft is set on the linkage seat, a continuously variable transmission arm is installed on the support arm shaft, a control handle is installed on the top of the continuously variable transmission arm, and a return pull rod and a return lever are respectively installed on both sides of the bottom. The position pull plate, the return pull rod and the bottom of the return pull plate are all installed on the linkage plate. The linkage plate is installed on the pin shaft. There is an adjustment pull rod, and a compression spring is sheathed on the adjustment pull rod, the compression spring is located in the upper connecting fork, and the lower connecting fork is hinged with a connecting plate. The invention has simple and compact structure, reliable action and easy implementation. In some cases, when the brake may be stepped on first, it plays a protective role and avoids human-machine damage.

Description

technical field [0001] The invention relates to a return mechanism of a brake linkage continuously variable speed control handle, which belongs to the field of agricultural technology. Background technique [0002] With the development of technology and the progress of the times, the combination of HST continuously variable speed + stepped mechanical gearbox is used to replace the traditional mechanical transmission mode, and it is gradually widely used in self-propelled agricultural machinery, especially wheeled harvesting machinery. HST has the characteristics of large stepless speed regulation range, stable speed change, easy forward, stop and reverse conversion, and easy operation. Under normal circumstances, when the vehicle is running to stop, the driver should first push and pull the shift control handle to the stop position to cut off the driving force, and then step on the brake to achieve smooth braking of the vehicle, but in some cases, it may happen that the driv...

AI Technical Summary

Problems solved by technology

Under normal circumstances, when the vehicle is running to stop, the driver should first push and pull the shift control handle to the stop position to cut off the driving force, and then step on the brake to achieve smooth braking of the vehicle, but in some cases, it may happen that the driver first steps on the brake situation, causing human-machine damage, in order to avoid this situation, there is a need for a protective measure to ensure sequential operation

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