Mini-cultivator speed-change mechanism

Abstract

The invention relates to an agricultural mini-cultivator used for farming paddy fields and dry fields, in particular to a mini-cultivator speed-change mechanism. The mini-cultivator speed-change mechanism comprises a driving shaft, a driven shaft, a reverse gear shaft, a shift fork shaft and an output shaft, wherein the driving shaft is provided with a belt driven wheel and a driving triple gear capable of moving along the axial direction of the driving shaft, the driven shaft is provided with a clutch gear capable of moving along the axial direction of the driven shaft, a driven triple gear rotationally matched with the driven shaft and a driven shaft output gear fixed on the driven shaft; the reverse gear shaft is provided with a reverse gear; the shift fork shaft is provided with a shifting fork; the output shaft is provided with a driving gear engaged with the driven shaft output gear; the driving shift fork shaft is provided with a sliding chute matched with the shifting fork; the driving shift fork shaft is engaged with the driven shift fork shaft in a one-to-one correspondence way under the action of the shifting fork; and the side of the driven shaft shift fork shaft is provided with a slot capable of being connected with the clutch gear into a whole in a blocking way. The speed-change mechanism has the following characteristics of multiple gears, simple structure and high reliability.

Description

technical field [0001] The invention relates to an agricultural cultivating machine for cultivating paddy fields and dry land, in particular to a speed change mechanism of a micro tillage machine. Background technique [0002] In hilly areas and mountainous areas with large ground slopes, and in small paddy fields, large-scale agricultural machinery cannot exert its power, and more human or animal power is used, which is labor-intensive and low in production efficiency. In view of this present situation, agricultural tillage machine has occurred at present. In the prior art, there are the following deficiencies: 1. Most of the existing micro-tillers have fewer shifting gears, and only need to set the gears for plowing. The speed change is not flexible enough, and it is impossible to better complete ditching, In addition, due to the lack of gears, the driving speed is relatively slow in places other than plowing fields, such as roads; 2. Even if a few micro tillage machines ...

AI Technical Summary

Problems solved by technology

In the prior art, there are the following deficiencies: 1. Most of the existing micro-tillers have fewer shifting gears, and only need to set the gears for plowing. The speed change is not flexible enough, and it is impossible to better complete ditching, In addition, due to the lack of gears, the driving speed is relatively slow in places other than plowing fields, such as roads; 2. Even if a few micro tillage machines are equipped with multiple gears, these speed change mechanisms are usually equipped with multiple transmissions. shaft, which not only leads to a large and bulky transmission, but also a complex structure that leads to a low reliability of the transmission mechanism.

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