Planetary reducer with adjustable single staggered tooth back clearance of planet wheel

Abstract

The invention discloses a planetary reducer with an adjustable single staggered tooth back clearance of a planet wheel in the field of planet gear transmission. An output end cover, an inner gear ring and an input end cover are coaxially connected to form a closed cavity; a sun gear and at least two planet gears are arranged in the cavity; the sun gear is coaxially connected and fixed on a motor spindle connecting sleeve; the motor spindle connecting sleeve is coaxially and rotatably connected with the input end cover; the planet gear comprises a first gear and a second gear which are coaxially connected and have the same parameters; the first gear and the second gear are arranged in a staggered manner; and the tooth faces of the first gear and the second gear make contact with the two side tooth faces of sun gear teeth and the two side tooth faces of inner gear ring teeth, respectively. The radial meshing clearance of the gear can be adjusted by adjusting the size of the sun gear to ensure a small back clearance; and in addition, the radial meshing clearance of the gear can be adjusted by replacing a large sun gear to ensure the small back clearance, so that the speed reducer is prevented from being scrapped, and the cost is saved.

Description

technical field [0001] The invention relates to the field of planetary gear transmission, in particular to a planetary gear reducer with adjustable backlash for single-displaced teeth of a planetary gear. Background technique [0002] The involute planetary transmission reducer is widely used in various machinery as a deceleration, acceleration and variable speed transmission device. Planetary transmission usually uses several planetary wheels to transmit loads at the same time, and uses internal meshing to split the power and make it reasonable. Therefore, it has compact structure, small size, light weight, large transmission ratio range, high transmission efficiency, stable operation, low noise, and can be carried out. Advantages of motion synthesis and decomposition. [0003] For planetary transmission reducers with output shafts that have two working states, counterclockwise and clockwise, especially for parts that need to be positioned repeatedly, it is always desirabl...

AI Technical Summary

Problems solved by technology

[0004] 1. For reducers that require a backlash of less than 10', high-precision gears need to be ground, which not only requires a long processing cycle, but also greatly increases the cost

[0005] 2. The reducer using cylindrical spur gears cannot solve the problem of increased meshing clearance caused by gear wear and thus leads to increased backlash, so the reducer can only be scrapped

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