Gear-shifting device of mini-tiller

Abstract

The invention discloses a gear-shifting device of a mini-tiller. A reverse gear is fixedly sleeved on a second locating shaft, a forward gear is fixedly sleeved on a first locating shaft, and a driving gear is slidingly sleeved on a gear-shifting shaft. A declutch shift shaft is fixed in a transmission case body, a gear-shifting fork is sleeved on the declutch shift shaft, a clamping foot of the gear-shifting fork is jointed with the driving gear in a clamped manner, and the gear-shifting fork can slide on the declutch shift shaft. A teeth row is fixed on the gear-shifting fork, the teeth row is meshed with sector teeth, the sector teeth are fixed with the inner end of a rotating shaft, the rotating shaft is arranged on the transmission case body in a penetrating manner, and the outer end of the rotating shaft is fixed with a control arm. According to the matching of the sector teeth and a fluted disc, the gear-shifting fork is moved by the gear-shifting device, so that one gear-shifting fork and one declutch shift shaft can realize the gear-shifting action, the gear-shifting fork can be effectively located on the declutch shift shaft so as to completely eradicate the phenomenon of putting into wrong gear, the internal structure of the transmission case is simplified, and the production cost of the mini-tiller transmission case is greatly reduced; and the mini-tiller gear-shifting device provided by the invention has the advantages of simple structure, easiness in assembling, good reliability, convenience in operation and the like.

Description

technical field [0001] The invention belongs to the technical field of tillage machines, and in particular relates to a shifting device on a tillage machine. Background technique [0002] Tillers are powered by small diesel engines or gasoline engines. They have the characteristics of light weight, small size, and simple structure. They can be widely used in dry land, paddy fields, orchards, etc. in plains, mountains, and hills. The tiller can be used freely in the field, which is convenient for users to use and store. It saves the trouble that large-scale agricultural machinery cannot enter the fields in mountainous areas. It is the best choice for farmers and consumers to replace cattle farming. [0003] Existing micro tillage machines generally have two forward gears and one reverse gear. The switching between the two forward gears, the high gear and the low gear, and the switching between the forward gear and the reverse gear are each completed by a shift fork. The shif...

AI Technical Summary

Problems solved by technology

[0004] 1) The shift fork cannot be effectively positioned when shifting gears, and there may be a phenomenon of wrong gear shifting, that is, when the forward gear is shifted, the reverse gear is also shifted. damage, shortening the service life of the gear

[0005] 2) It requires two shift forks, two shift fork shafts and two sets of connecting rod control mechanisms, the structure is complicated, the assembly is difficult, the production cost is high, and the entire transmission box is bulky and heavy

[0006] 3) The structure of the connecting rod control mechanism is complex, the flexibility and reliability are poor, and the operation is inconvenient

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