Multi-stage gear reduction motor with compound planet gears

Abstract

The invention relates to a multi-stage gear reduction motor with compound planet gears, an output shaft of a motor and the rotating axis of a first input piece are alternatively distributed, the length and the size of the motor are no longer limited, thereby increasing the length-diameter ratio of the motor to improve the efficiency of the motor. The multi-stage gear reduction motor can be appliedto the application of limited axial space, and the compactness of the axial size of the entire reduction motor can be realized. In addition, a compound planet gear structure can be used by a last output end of a compound planet gear reduction mechanism to optimize the gear parameters of each pair of meshing gears to achieve a large reduction ratio, and the load capacity can be improved and the transmission efficiency can be improved. With the same output speed, the large reduction ratio can facilitate the rotation rate of the motor and the power density, the size and the weight of the motor can be further reduced. In the applications that the output end needs to be automatically locked, suitable gear parameters of a planetary gear train are selected, and the function of reverse self-lockof the output end of the planetary gear train can be realized.

Description

Technical field [0001] The invention relates to a reduction motor, and more specifically, to a multi-stage gear reduction motor containing a compound planetary gear. Background technique [0002] The motor shaft of the reduction motor in the related art is either parallel to the reduction output shaft or coaxial with the reduction output shaft, making the overall axial dimension too large. In some applications where the axial installation space is compact, the invention is either not applicable, or the motor has to adopt a high-cost disc brushless motor design. For other geared motors with cross-shaft designs such as worms and worms, the last-stage planetary gear reduction mechanism often uses a simple planetary gear structure, and its reduction ratio is relatively small. The small number of planetary gears also limits the speed of the reduction motor. Overall load capacity. The simple planetary gear structure also requires the sun gear and the ring gear to use the same gear mo...

AI Technical Summary

Problems solved by technology

[0002] The motor shaft of the deceleration motor in the related art is either parallel to the deceleration output shaft or coaxial with the deceleration output shaft, so that the overall axial dimension is too large

In some applications where the axial installation space is tight the invention is either not applicable or the motor has to be a high cost disc brushless motor design

For other geared motors designed with staggered shafts such as worm gears, the last stage of the planetary gear reduction mechanism often uses a simple planetary gear structure, and its reduction ratio is relatively small. The small number of planetary gears also limits the geared motor. overall load capacity

Simple planetary gear configurations also require the same gear modulus and pressure angle for the sun and ring gears as the planet gears, limiting the ability to improve transmission efficiency and power density by optimizing the modulus and pressure angle parameters of each pair of meshing gears

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