Screen pendulum differential reducer

Abstract

The invention discloses a sieve pendulum differential gear reducer. The gear reducer comprises a needle tooth holder, wherein the circumferential inner wall of the needle tooth holder is uniformly provided with needle tooth pins. The gear reducer is characterized in that one side of the needle tooth holder is provided with an output wheel, the output wheel and the needle tooth holder form a circular cavity, the inner wall of the output wheel is uniformly provided with hobbing pins, a sieve pendulum gear and an input wheel are arranged in the circular cavity, the sieve pendulum gear is sleeved on an eccentric wheel of the inner end of the input wheel, the number of teeth and the modulus of the sieve pendulum gear are the same as those of each needle tooth pin, the modulus of the sieve pendulum gear is the same as that of each hobbing pin, the number of the teeth of the sieve pendulum gear is one fewer than the number of teeth of each hobbing pin, the sieve pendulum gear is respectively meshed with the inner sides of partial need tooth pins and the inner sides of partial hobbing pins, the input wheel is led out from one side of the needle tooth holder and is provided with a drive shaft hole, and a work shaft hole is formed in the axis of the output wheel. The gear reducer has the advantages of being few in the number of whole components, small in size, low in weight, simple in structure, low in manufacturing cost, little in produced heat, easy to radiate, low in requirements for machining precision, convenient and quick to install, capable of achieving low velocity and large power, wide in applicable range and strong in expansibility, and having a self-locking function.

Description

technical field [0001] The invention relates to a speed reducer, in particular to a screen swing differential speed reducer. Background technique [0002] The traditional cycloidal pin gear reducer is a reducer housing connected by a casing base, a pin gear casing and a flange seat. The input shaft and output shaft are installed in the flange seat and the casing seat respectively, and the The cycloidal gear set on the inner end of the input shaft, the needle pins uniformly fixed in the pin gear housing, and the pin shafts uniformly fixed on the inner end of the output shaft on the wheel disc. The problems of this cycloidal pinwheel reducer are: 1. The input shaft and the output shaft are respectively installed on the flange seat and the casing seat through bearings. Eccentric sleeve and cycloidal gear, so the whole machine has many parts for relative rotation, large volume, complex structure, high manufacturing cost, large heat generated, difficult heat dissipation, especia...

AI Technical Summary

Problems solved by technology

The problems of this cycloidal pinwheel reducer are: 1. The input shaft and the output shaft are respectively installed on the flange seat and the casing seat through bearings. Eccentric sleeve and cycloidal gear, so the whole machine has many parts for relative rotation, large volume, complex structure, high manufacturing cost, large heat generated, difficult heat dissipation, especially during high-power transmission; 2. One end of the pin shaft is fixed on the output On the shaft, it is in a cantilever state, and it completely relies on the pin shaft to transmit a large torque during work. Therefore, a rolling sleeve is set on the pin shaft, but the pin shaft is still easy to wear, bend, or even break; especially once the pin shaft is divided into equal parts during processing Errors in precision will cause some or even a single pin to be stressed alone, which will greatly accelerate the wear of the pin, so the machining accuracy of the parts is required to be high; 3. When installing, the input shaft and the output shaft need to use couplings and motors respectively. The shaft is connected to the working shaft, and the installation is cumbersome; 4. The tooth shape set on the outer edge of the cycloid gear is an abnormal epicycloid, the tooth shape is complex, and the processing is difficult; 5. There are many relatively rotating parts, so that the motor needs to be overcome when driving Large frictional resistance increases the load on the motor

[0003] CN101705979 invented by me discloses a cycloid reducer. Although this cycloid reducer solves the above problems to a certain extent, it is found in practice that if a cycloid reducer with a low speed ratio and high power needs to be manufactured, It is necessary to reduce the diameter and number of teeth of the pin gear seat and the cycloid gear, and once the diameter of the cycloid gear is too small, there is no place to process the fan-shaped holes on it, so the cycloid pin gear reducer with this structure cannot achieve low speed ratio and high power

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