Winch

Abstract

The invention relates to a winch, which comprises a reel, a motor and a power transmission device, wherein the power transmission device comprises a shell, a shaft of a driving gear, a planetary gear component, a ring gear and a power out put part, wherein the shaft of the driving gear defines a longitudinal axis and the remote end of the shaft of the driving gear is provided with the driving gear and the shaft of the driving gear extends into the shell; the planetary gear component comprises a first planet carrier and a second planet carrier which are arranged in the shell and can rotate around the longitudinal axis, and a first planetary gear, a second planetary gear and a third planetary gear which are engaged with the transmission gear respectively and rotationally supported on the first and second planet carriers; the ring gear is arranged in the shell and meshed with the first planetary gear, the second planetary gear and the third planetary gear; and the power output part can rotate around the longitudinal axis and is provided with an input gear part and an output gear part, and the input gear part is engaged with the first planetary gear, the second planetary gear and the third planetary gear, and the output gear part is suitable to be engaged with an internal tooth part of the reel. The winch adopts a single-planetary gear to realize the function of speed reduction with large speed ratio, has the advantages of high transmission efficiency, simple structure, light weight and low cost.

Description

technical field [0001] The invention relates to a winch, in particular to an electric winch used for automobiles. Background technique [0002] The electric winch for automobile is a vehicle-mounted equipment equipped on engineering vehicles, off-road vehicles, and SUV sports vehicles. It is mainly used for vehicle rescue, loading and unloading or hoisting goods. [0003] US Patent No. 4,545,567 discloses a winch. The structure of the power transmission device of the winch is very complicated, and a multi-stage planetary mechanism in series is used to realize the deceleration function of a large speed ratio. [0004] Therefore, the power transmission device of the traditional winch has a complex structure and low transmission efficiency, which leads to an increase in the weight of the whole machine, a large number of parts, complex processing and assembly, and high manufacturing costs. [0005] US reissued patent Re.36216 discloses a winch, the brake mechanism of which is v...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the power transmission device of the traditional winch has a complex structure and low transmission efficiency, which leads to an increase in the weight of the whole machine, a large number of parts, complex processing and assembly, and high manufacturing costs.

[0005] U.S. reissued patent Re.36216 discloses a winch, the brake mechanism of which is very complicated, therefore, the processing and assembly are complicated, the cost is high, and the failure rate is high, the maintenance cost is high and maintenance is difficult

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