CN217463075U

CN217463075U - One-level single-shaft small-tooth-difference speed reducer

Info

Publication number: CN217463075U
Application number: CN202220216629.XU
Authority: CN
Inventors: 王忠引; 马其学
Original assignee: Ningbo Jinyi Transmission Technology Co ltd
Current assignee: Ningbo Jinyi Transmission Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-09-20
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a few tooth difference reduction gears of one-level unipolar, input shaft, gear housing, balanced eccentric cover, external gear, internal gear driving part, external gear driving part, the input shaft passes through a bearing fixed mounting with the gear housing, and input shaft fixed mounting has the balanced eccentric cover of taking the balancing piece, and sliding fit is connected with balanced eccentric cover to the centre bore of initiative external gear, and carries out fixed location in the axial, and the external gear makes integrative internal gear meshing with the gear housing. Further comprising: the output shaft is connected with the external gear through a zero-tooth-difference coupling structure which is meshed with the output shaft, and a gasket is arranged at one end of the balance eccentric sleeve and one end of the external gear. According to the one-level single-shaft small-tooth-difference speed reducer, when a single driving gear rotates eccentrically, a balancing weight is configured on the weightless side of the eccentric sleeve, so that the centrifugal force caused by operation can be eliminated, the operation balance is achieved, the size of a machine body is reduced, the transmission efficiency is improved, and the processing difficulty and the manufacturing cost can be reduced by adopting a mould pressing part.

Description

One-level single-shaft small-tooth-difference speed reducer

Technical Field

The utility model relates to a reduction gear specifically is a few tooth of one-level unipolar is poor reduction gear.

Background

The multi-stage dead axle gear reducer and the multi-stage planetary reducer which are used at present have large radial and axial sizes due to a plurality of transmission chains. In addition, the small-tooth-difference speed reducer using the two eccentric wheels for balancing not only increases the axial size and the cost due to the addition of one driving gear, but also greatly reduces the transmission efficiency. In order to solve the problems, innovative design is urgently needed on the basis of the original speed reducer.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a few tooth difference reduction gears of one-level unipolar to propose the reduction gear that uses at present among the above-mentioned background art with high costs, the many problems of driving chain.

In order to achieve the above object, the utility model provides a following technical scheme: a single-shaft, small tooth difference speed reducer, comprising: the input shaft and the gear shell are fixedly installed through a bearing I, the input shaft is fixedly provided with a balance eccentric sleeve with a balance block, and the balance eccentric sleeve are tightly matched and limited to rotate mutually by a hole with a trimming edge and a shaft;

the central hole of the driving external gear is connected with the balance eccentric sleeve in a sliding fit manner and is fixedly positioned in the axial direction, and the external gear is meshed with the internal gear which is integrated with the gear shell.

Further comprising: the output shaft is connected with the outer gear through a zero-tooth-difference coupling structure which is meshed with the outer gear, the zero-tooth-difference coupling structure can be replaced by a shaft pin structure, and a gasket is arranged at one end of the balance eccentric sleeve and one end of the outer gear;

and the second bearing is used for limiting the axial direction and the radial direction of the input shaft and limiting the output shaft.

Preferably, the input shaft is in driving connection with the motor shaft or other rotating shafts through a coupler, and 4 counter bores for stringing nuts are formed in the input end of the gear shell.

Preferably, the gear housing is fixedly mounted with the motor or other input source by a nut.

Preferably, the shaft pin structure comprises an inner gear driving part and an outer gear driving part, and the inner and outer positions of the inner gear driving part and the outer gear driving part can be mutually switched.

Preferably, the output shaft is fixedly connected with the output end cover in the radial direction and the axial direction through a bearing III, and the output end cover is clamped and installed with the gear shell.

Compared with the prior art, the beneficial effects of the utility model are that: this few tooth difference reduction gear of one-level unipolar can remove the centrifugal force that the operation brought, reaches the operation balance, reduces the cost of manufacture, and its concrete content is as follows:

1. according to the primary single-shaft small-tooth-difference speed reducer, when a single driving gear rotates eccentrically, a balancing weight is configured on the weightless side of an eccentric sleeve, so that the centrifugal force caused by operation can be eliminated, and the operation balance is achieved;

2. according to the one-stage single-shaft small-tooth-difference speed reducer, the outer gear revolves around the inner gear to serve as a speed reduction output speed, and the outer gear is connected through the mutually meshed zero-tooth-difference coupling structures arranged on the inner gear and the output shaft, so that the size of a machine body is reduced, and the transmission efficiency is improved.

3. This few tooth difference reduction gear of one-level unipolar adopts the mould pressing part, can reduce the processing degree of difficulty, reduces the cost of manufacture.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a first positional relationship diagram of the external gear driving member and the internal gear driving member of the present invention;

FIG. 3 is a second position relationship diagram of the external gear driving member and the internal gear driving member of the present invention;

in the figure: 1. an input shaft; 2. a gear housing; 3. a first bearing; 4. balancing the eccentric sleeve; 5. an outer gear; 6. a gasket; 7. an output shaft; 8. a second bearing; 9. a third bearing; 10. an output end cover; 12. a shaft pin; 13. an inner gear driving member; 14. and the external gear driving piece.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a single-shaft, small tooth difference speed reducer, comprising: the motor comprises an input shaft 1, a gear shell 2, a balance eccentric sleeve 4, an external gear 5, an internal gear driving part 13 and an external gear driving part 14, wherein a motor shaft or other rotating shafts are in driving connection with the input shaft 1 through a coupler, the gear shell 2 is provided with 4 counter bores for stringing nuts at the input end, and the gear shell 2 is fixedly installed with a motor or other input sources through nuts;

the input shaft 1 and the gear shell 2 are fixedly installed through a bearing I3, the input shaft 1 is fixedly provided with a balance eccentric sleeve 4 with a balance block, and the input shaft 1 and the balance eccentric sleeve are tightly matched with each other through a hole with a trimming edge and a shaft to limit mutual rotation;

the center hole of the driving external gear 5 is connected with the balance eccentric sleeve 4 in a sliding fit manner and is fixed and positioned in the axial direction, when the input shaft 1 rotates, the balance eccentric sleeve 4 is driven to synchronously rotate, the center of the external gear 5 can rotate around the center of the input shaft 1, and the external gear 5 is meshed with the internal gear which is integrated with the gear shell 2;

further comprising: the output shaft 7 is connected with the external gear 5 through a zero-tooth differential coupling structure which is meshed with each other, the speed of relative motion of the external gear 5 around the internal gear is directly transmitted to the output shaft 7 through the zero-tooth differential coupling structure, the zero-tooth differential coupling structure can be replaced by a shaft pin 12 structure, the shaft pin 12 structure comprises an internal gear driving part 13 and an external gear driving part 14, the internal and external positions of the internal gear driving part 13 and the external gear driving part 14 can be mutually converted, so that the purpose of reducing speed with small tooth difference is achieved, in order to prevent the balance eccentric sleeve 4 and the external gear 5 from moving axially, one end of the balance eccentric sleeve 4 and one end of the external gear 5 are provided with a gasket 6, and the gasket 6 is adjusted in axial clearance;

the bearing II 8 is used for axial and radial limiting of the input shaft 1 and limiting the output shaft 7, in addition, the output shaft 7 is fixedly connected with the output end cover 10 in the radial direction and the axial direction through the bearing III 9, and the output end cover 10 is clamped with the gear shell 2.

The working principle is as follows: the mechanism achieves speed reduction through meshing transmission of a pair of external gears 5 with the difference of 1-5 teeth and an internal gear, adopts a pair of internal and external gears for meshing, has small axial size, can replace a traditional multistage fixed-shaft gear reducer and a multistage planetary reducer, uses the external gear 5 as a driving part for speed reduction, is installed on an input shaft 1 with an eccentric sleeve, and integrally fixes the internal gear and a shell;

when the input shaft 1 rotates to drive the balance eccentric sleeve 4 to rotate, the external gear 5 also rotates around the balance eccentric sleeve 4, and the external gear 5 is meshed with the internal gear which is fixed, so that the rotating external gear can rotate and revolve, the external gear 5 is connected with the output shaft 7 by a zero-tooth differential coupling structure, and the speed of relative rotation of the external gear 5 around the internal gear is transmitted to the output shaft 7 by the zero-tooth differential coupling structure, so that the aim of reducing speed is fulfilled.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a few tooth difference reduction gears of one-level unipolar, mainly comprises input shaft, balanced eccentric cover, external gear, internal gear and output shaft, its characterized in that includes: the input shaft and the gear shell are fixedly installed through a bearing I, the input shaft is fixedly provided with a balance eccentric sleeve with a balance block, and the balance eccentric sleeve are tightly matched and limited to rotate mutually by a hole with a trimming edge and a shaft;

the central hole of the driving external gear is connected with the balance eccentric sleeve in a sliding fit manner and is fixedly positioned in the axial direction, and the external gear is meshed with the internal gear which is integrated with the gear shell;

further comprising: the output shaft is connected with the outer gear through a zero-tooth-difference coupling structure which is meshed with each other, the zero-tooth-difference coupling structure can be replaced by a shaft pin structure, and a gasket is arranged at one end of the balance eccentric sleeve and one end of the outer gear;

2. The one-stage single-shaft small tooth difference speed reducer according to claim 1, characterized in that: the input shaft is in driving connection with the motor shaft through a coupler, and 4 counter bores for stringing nuts are formed in the input end of the gear shell.

3. The one-stage single-shaft small tooth difference speed reducer according to claim 1, characterized in that: the gear shell is fixedly installed with the motor through a nut.

4. The one-stage single-shaft small tooth difference speed reducer according to claim 1, characterized in that: the shaft pin structure comprises an inner gear driving part and an outer gear driving part, and the inner position and the outer position of the inner gear driving part and the outer gear driving part can be mutually converted.

5. The one-stage single-shaft small tooth difference speed reducer according to claim 1, characterized in that: the output shaft is fixedly connected with the output end cover in the radial direction and the axial direction through a bearing III, and the output end cover is clamped and installed with the gear shell.