Mini-tiller shifting speed changing mechanism and mini-tiller comprising same

Abstract

The invention discloses a mini-tiller shifting speed changing mechanism. The mechanism comprises a box body, a spindle assembly, a shifting speed changing assembly and a reverse shifting assembly. Theshifting speed changing assembly comprises a countershaft, a synchronous dual gear, a countershaft shifting gear, a shifting dual gear, a countershaft ring gear and a worm, wherein the synchronous dual gear, the countershaft shifting gear, the shifting dual gear, the countershaft ring gear and the worm are sequentially arranged on the countershaft in a sleeving mode; the shifting speed changing assembly further comprises a worm meshing gear for controlling the countershaft ring gear and the worm to be engaged and disengaged; and the worm meshing gear is arranged on the worm in a sleeving modeand can move in the axial direction of the worm. Through mutual cooperation of three shifting devices of the countershaft shifting gear, the shifting dual gear and the worm meshing gear, walking shifting of a mini-tiller is achieved, more gears are set, the speed of the mini-tiller is controlled more flexibly, and the selectivity is higher under different environments. The invention further discloses a mini-tiller using the mini-tiller shifting speed changing mechanism. has small power loss and low failure rate. The mini-tiller has the characteristics of lower power loss and fault rate and high reliability, is low in noise and can work normally in various complicated work places and environments.

Description

technical field [0001] The invention relates to the field of micro tillage machines, in particular to a gear shift mechanism of the micro tillage machine and the micro tillage machine. Background technique [0002] As a small agricultural mechanical device, the tiller is playing an increasingly important role in plowing, plowing, pruning and weeding. However, in the prior art, the gear shifting mechanism of the micro tillage machine generally has complex structures, long power transmission routes that reduce the reliability of power transmission, inconvenient gear shifting operations, poor flexibility, and low stability. 1. Under the condition of poor lubricating conditions, it cannot run normally for a long time and cannot meet the needs of agricultural production. [0003] Therefore, it is necessary to improve the gear shifting mechanism of the tiller, so that it has simple structure, reliable power transmission, flexible and convenient gear shifting, more flexible speed ...

AI Technical Summary

Problems solved by technology

However, in the prior art, the gear shifting mechanism of the micro tillage machine generally has complex structures, long power transmission routes that reduce the reliability of power transmission, inconvenient gear shifting operations, poor flexibility, and low stability. 1. Under the condition of poor lubricating conditions, it cannot run normally for a long time and cannot meet the needs of agricultural production.

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