Lock ring type double-acting central transmission differential gear and differential lock operating device

Abstract

The invention discloses a lock-ring double-acting central driving differential mechanism and a differential lock operating device, applied to the central driving and steering mechanism of hand tractors. The invention is aimed at improving the existing technology related to the steering function of hand tractors. The structure is small and compact, and applicable to the development and arrangement in a mini-type gear box of a hand tractor; without changing the structure of an existing technical model, the lock-ring double-acting central driving differential mechanism is used to replace the central driving bull-gear in the existing technology, and combined with a jaw steering gear on a steering shaft of the existing technology to form a new steering gear train, and matched with a differential lock operating device, the differential mechanism is opened or locked under the control of a differential lock clutch operating handle, so that the hand tractor can achieve two steering manners i.e. differential driving steering and jaw clutch steering. During actual operation, suitable operation manner can be chosen according to the environmental contents, and as a result, the working efficiency and operation safety under various environments of the hand tractor can be improved.

Description

technical field [0001] The invention relates to a central transmission mechanism and a control device of a tractor, in particular to a central transmission mechanism and a control device of a walking tractor. Background technique [0002] The walk-behind tractor is a small agricultural tractor for farming and transportation. It has a simple and compact structure, a small and flexible model, convenient operation, and a wide range of applications. [0003] The steering operation method of walking tractors in the prior art generally adopts the mode of pinching the handle to control the clutch of the left (right) jaw clutch on the steering shaft in the gearbox, and realizes the steering by cutting off the power of the driving wheel on one side. The steering of this principle The method is very beneficial to the steering control of the tractor in field cultivation, which is labor-saving and effective, but in road transportation operations, the steering operation method using this...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention aims at the deficiencies in the steering operation principle of the walking tractor in the prior art that can not take into account the deficiencies in the operation and control safety under various environmental contents, without changing the basic structure principle of the walking tractor in the prior art, to provide A lock-ring type double-acting central transmission differential and a differential lock control device, in an improved manner, the lock-ring type double-acting central transmission differential is used to replace the central transmission large gear on the steering shaft of a walking tractor in the prior art, Cooperate with the toothed steering gear on the steering shaft of the prior art to form a new steering shaft wheel train, cooperate with the differential lock control device, and under the control of the differential lock control handle, the differential lock ring is moved left and right to open Or lock the differential, when it is opened, the differential acts as a differential speed, and when it is locked, all parts of the differential form a whole and only play the role of a central transmission gear, so as to realize the free differential steering and jaw clutch of the walking tractor Turn to two different steering modes to improve the operation adaptability and control safety of the walking tractor in different environments

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