Shift control mechanism of steering-wheel tractor

Abstract

The invention relates to a shift control mechanism of a steering wheel tractor, and the shift control mechanism carried out the shift control by adopting flexible axial lines. The shift control mechanism comprises a shift transmission assembly and a shift control assembly, wherein the shift transmission assembly comprises a lower gearbox cover, an upper gearbox cover and an intermediate transmission assembly; and the shift control assembly comprises a flexible selector axial line, an auxiliary-shift soft axial line, a main-shifting soft axial line, a main control assembly and an auxiliary control assembly, and the main control assembly and the auxiliary control assembly are arranged in a cab. The shift control mechanism has the characteristics of flexible shift, labor-saving operation, reliability and durability, and by using the shift control mechanism provided by the invention, a driver can carry out remote shift operation in a closed cab.

Description

technical field [0001] The invention relates to a tractor, in particular to a steering wheel type tractor shifting mechanism. Background technique [0002] At present, tractors are important agricultural machinery in the new socialist countryside. The shift mechanism of most walking tractors in the society adopts the method of direct shift with long arm and hard rod. The handle seat and shift mechanism of this shift mechanism The gear handle must be extended into the cab, and the cab needs to have a big opening. When the tractor turns left and right, the driver must follow the swing of the gear lever to change gears. The driver can drive in a windy and sunny environment, comfortable In addition, the long-arm hard rod is prone to deformation during long-term use, resulting in disordered gears. In response to this problem, people have invented a soft shaft to achieve this problem after long-term practice. The operating mechanism for shifting gears, such as: [0003] 1. Chine...

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Problems solved by technology

[0005] Through the inventor's market research, it is found that although the above-mentioned disclosed documents have solved the disadvantages of the driver driving in the open air, there are still certain problems, such as: in document 1, due to the main transmission outer shaft and the main transmission inner shaft The shaft is easy to wear and there are factors such as the deformation of the ball-joint bending rod section, which often cause disordered gears and unreliable use of gears; If the distance to the cab is too close, it still needs to be connected with a hard rod. The range of motion between the connecting rod and the fixed bushing is insufficient, and it is prone to inflexible gear shifting, laborious operation, and even inaccurate gear shifting, disordered gears, and gear loss, etc. defect

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