Noise-reducing planetary reducer

Abstract

The invention provides a noise-reducing planetary reducer. The noise-reducing planetary reducer comprises a planetary case body, a planetary assembly, a planetary input gear and a planetary output gear, wherein a planetary plate and the planetary assembly are sequentially arranged in the planetary case body from left to right; the left end of the planetary plate is connected with a planetary output shaft; the planetary output gear is arranged on the planetary output shaft; the planetary assembly comprises three planetary gears which are mutually in 120-degree arrangement; connecting shafts are arranged in the planetary gears in a sleeving way; the convex edges of the left ends of the connecting shafts are arranged in raised round holes in the right end of the planetary plate in a clamping way; the right ends of the connecting shafts are connected with nut locking structures. The noise-reducing planetary reducer provided by the invention has the beneficial effects that the planetary plate and the planetary output shaft are of an integrated structure, bearings I are additionally arranged in the outer diameter positions of the planetary plate, eccentricity and lopsidedness of the planetary plate are reduced, and the noise is reduced; the locking nut structures are locking structures which are additionally arranged on the basis of common nuts, the overlap ratio of the planetary gears and an inner gear is increased, the assembling and machining efficiency is greatly increased, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of mechanical transmission mechanisms, in particular to a noise reduction planetary reducer. Background technique [0002] The reducer in the actuator has a total of 3 stages of reduction, and the planetary reducer is one of them, which is widely used in the reducer of the electric actuator. In the noise inspection of the actuator at the factory, the noise index seriously exceeded the standard, and the pass rate of one-time assembly was low. It had to be disassembled and assembled repeatedly to find out the reason, and the problem could only be qualified after the problem was eliminated. The production efficiency was low and the cost was high, which became a technical problem that plagued production. [0003] The noise of the reducer is mainly generated by gear meshing, such as figure 1 In the planetary reducer shown, the influence of the eccentric weight of the planetary disc (A) on the noise, the eccentri...

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Problems solved by technology

In the noise inspection of the actuator at the factory, the noise index seriously exceeds the standard, and the pass rate of one-time assembly is low. It needs to be disassembled repeatedly to find out the reason, and the problem can only be qualified after the problem is eliminated. The production efficiency is low and the cost is high, which has become a technical problem that plagues production.

[0003] The noise of the reducer is mainly generated by gear meshing, such as figure 1 In the planetary reducer shown, the influence of the eccentric weight of the planetary disc (A) on the noise, the eccentric weight of the planetary disc (A) causes the planetary gear (B) to generate unbalanced centrifugal force during meshing operation, causing the vibration of the gear train and generating noise ; Internal gear (C) and planetary case (D) are set separately, that is, internal gear (C) is located in planetary case (D), which reduces assembly processing efficiency and increases cost; connecting shaft (E) and planetary The connection structure of the disc (A) is welded. The welded connecting shaft (E) and the planetary disc (A) are prone to cracks due to the rapid cooling of the heat-affected zone. Reasonable, it is easy to cause the shafts on the planetary disk to be out of alignment, shortening the service life of the gears

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