A tractor power high and low gear structure

Abstract

The invention relates to a power high-low gear structure of a tractor. The power high-low gear structure comprises a power high-low gear shell, a high gear clutch shell, an input shaft, an input gear, an output gear, a locking wet clutch, a high gear wet clutch and a speed reducing mechanism, wherein the locking wet clutch consists of the power high-low gear shell, a locking piston, a locking friction piece, a pressing disc, a disk spring and a check ring which are connected with each other, the high gear wet clutch consists of the high gear clutch shell, a high gear piston, a high gear clutch seat, a high gear clutch hub and a high gear friction piece which are connected with each other, and the speed reducing mechanism consists of a dual gear, a planet carrier, a planet pin, the input gear and the output gear which are connected with each other. According to the power high-low gear structure of the tractor, disclosed by the invention, the combination is smooth and steady when gear shifting is carried out, the impact on gears due to the gear shifting is reduced, the damage to the gears is reduced, the axial size of the mechanism is reduced, the structure is more compact, the operation is convenient, and the labor strength of a driver and the requirement on the driving level of the driver are reduced.

Description

technical field [0001] The invention relates to a shifting structure in a tractor transmission system, in particular to a tractor power high and low gear structure. Background technique [0002] The high and low gears are a kind of transmission device in the tractor transmission system, which can realize the switching function of the tractor's high gear and low gear, so that the tractor can drive and work at different speeds, and is an important structure in the transmission system. Usually, the high and low gears of tractors are mainly mechanical, and the switching between high and low gears is realized by changing the transmission route and thus changing the transmission ratio. This mechanical high and low gear structure needs to cut off the tractor's power transmitted to the gearbox when shifting gears, thus affecting the working efficiency. The mechanical high and low gears are complicated to operate, which requires a higher driving level of the driver and increases the...

AI Technical Summary

Problems solved by technology

This mechanical high and low gear structure needs to cut off the tractor's power transmitted to the gearbox when shifting gears, thus affecting work efficiency

The mechanical high and low gears are complicated to operate, which requires a higher driving level of the driver and increases the labor intensity of the driver.

When switching between high and low gears, there is often a shifting shock, which can easily cause damage to the gears of the drive train and affect the life of the gears

At present, the existing power high and low gear structure adopts the axial double clutch setting to control the high gear and low gear respectively. This structure has a large axial dimension and complicated oil circuit and control.

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