CN215596362U

CN215596362U - Speed reducer brake structure

Info

Publication number: CN215596362U
Application number: CN202121321188.1U
Authority: CN
Inventors: 郝鸣; 吕刚; 陈树才; 陈炜; 许强
Original assignee: Jiangsu Guomao Reducer Group Co ltd
Current assignee: Jiangsu Guomao Reducer Group Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-01-21
Anticipated expiration: 2031-06-11

Abstract

The utility model belongs to the technical field of speed reducers, in particular to a brake structure of a speed reducer, which comprises: a brake cover; the sliding seat is arranged in a sliding manner along the axial direction of the gear shaft; the locking structure is arranged between the speed reducer box body and the gear shaft, and extrusion braking is realized on the gear shaft through deformation; the extrusion spring is arranged between the brake cover and the sliding seat, and the axis of the extrusion spring is parallel to the axis of the gear shaft; the outer wall of the sliding seat is provided with a step structure, the inside of the speed reducer box body is provided with a corresponding step structure in a matching mode with the sliding seat, a sealing cavity is formed between the sliding seat and the step surface vertical to the axis of the gear shaft, the speed reducer box body and the step surface vertical to the axis of the gear shaft, the inner surface of the speed reducer box body and the outer surface of the sliding seat, and an oil supply channel communicated with the inside and the outside of the sealing cavity is arranged on the speed reducer box body. The utility model provides a brake structure which can effectively ensure that each structure in a speed reducer can keep a stable state when a prime motor does not work formally and outputs power.

Description

Speed reducer brake structure

Technical Field

The utility model belongs to the technical field of speed reducers, and particularly relates to a brake structure of a speed reducer.

Background

The speed reducer plays a role in matching rotating speed and transmitting torque between a prime motor and a working machine or an actuating mechanism, is relatively precise machinery, aims to reduce the rotating speed, and is widely applied to modern machinery.

The existing speed reducer realizes work following after a prime motor is started, and is in a free state after the prime motor stops working, and is not limited in a stable state incapable of moving by any limiting structure, so that the speed reducer can also act along with the prime motor when the prime motor does not receive a control signal and does not work formally but slightly rotates, and when the condition is irregular for many times, the service life of the speed reducer is very easy to reduce, and the matching precision of an internal structure is influenced.

In view of the above problems, the present inventors have actively researched and innovated a brake structure of a speed reducer based on practical experience and professional knowledge that is abundant for many years in engineering application of such products.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the background art, the utility model provides a quick brake structure.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a speed reducer brake structure, sets up between speed reducer box and gear shaft, includes:

the brake cover is coaxially arranged with the gear shaft, is in sealing fit with the speed reducer box body, and is fixed relative to the axial direction of the gear shaft;

the sliding seat is arranged along the axial direction of the gear shaft in a sliding manner and is in sealing fit with the speed reducer box body;

the locking structure is arranged on the other side, opposite to the braking cover, of the sliding seat, is arranged between the speed reducer box body and the gear shaft, and is used for realizing extrusion braking on the gear shaft through deformation;

the extrusion spring is arranged between the brake cover and the sliding seat, and the axis of the extrusion spring is parallel to the axis of the gear shaft;

the outer wall of the sliding seat is provided with at least one step structure, the inside of the speed reducer box body and the sliding seat are matched to form corresponding step structures, the sliding seat is provided with a step surface vertical to the axis of the gear shaft, the speed reducer box body is provided with a step surface vertical to the axis of the gear shaft, the inner surface of the speed reducer box body and the outer surface of the sliding seat form a sealed cavity, and the speed reducer box body is provided with a communicated oil supply channel inside and outside the sealed cavity.

Furthermore, the other side of the brake cover relative to the extrusion spring is positioned by a clamp spring partially embedded in the inner wall of the speed reducer box body.

Furthermore, the outer surface of the brake cover is sealed with the speed reducer box body through a sealing structure embedded in the speed reducer box body.

Further, the brake cover and/or the sliding seat are/is provided with a mounting groove for accommodating the end of the extrusion spring.

Further, the mounting groove is arranged on the sliding seat.

Furthermore, the sliding seat is located on the outer surfaces of two sides of the step surface, and the sliding seat and the speed reducer box are sealed through a sealing structure embedded in the speed reducer box.

Furthermore, two seals are arranged between one side of the step surface of the sliding seat and the speed reducer box body.

Furthermore, a circumferential groove is formed in the outer surface of the sliding seat between two seals, and a circumferential cavity is formed between the circumferential groove and the inner wall of the speed reducer box body.

Furthermore, the locking structure is positioned on the other side of the gear shaft, which is opposite to the sliding seat in the axial direction of the gear shaft, through a step surface on the box body of the speed reducer.

Further, the sliding seat comprises two parts, wherein the sealed cavity is formed between the first part and the speed reducer box body, the second part is in contact with the locking structure, and the first part and the second part transmit force through a plane perpendicular to the axis of the gear shaft.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides the brake structure which can effectively ensure that each structure in the speed reducer can be kept in a stable state when the prime motor does not work formally to output power, and can effectively prolong the service life of the speed reducer and improve the working stability of the speed reducer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a brake structure of a speed reducer after installation;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a cross-sectional view of the slide mount;

FIG. 4 is an enlarged view of a portion of FIG. 1 at B;

in the figure: 1. a speed reducer box body; 2. a gear shaft; 3. a brake cover; 4. a sliding seat; 41. a circumferential groove; 42. a first portion; 43. a second portion; 5. a locking structure; 6. a compression spring; 7. an oil supply passage; 8. sealing the cavity; 9. mounting grooves; 10. and (4) annular cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-4, a speed reducer brake structure sets up between speed reducer box 1 and gear shaft 2, includes: the brake cover 3 is coaxially arranged with the gear shaft 2, is in sealing fit with the speed reducer box body 1, and is fixed relative to the axial direction of the gear shaft 2; the sliding seat 4 is arranged in a sliding manner along the axial direction of the gear shaft 2 and is in sealing fit with the speed reducer box body 1; the locking structure 5 is arranged on the other side, opposite to the braking cover 3, of the sliding seat 4, is arranged between the speed reducer box body 1 and the gear shaft 2, and realizes extrusion braking on the gear shaft 2 through deformation; the extrusion spring 6 is arranged between the brake cover 3 and the sliding seat 4, and the axis of the extrusion spring is parallel to the axis of the gear shaft 2; the outer wall of the sliding seat 4 is provided with at least one step structure, the corresponding step structure is arranged inside the speed reducer box body 1 in a matching mode with the sliding seat 4, a sealing cavity 8 is formed between the sliding seat 4 and the step face perpendicular to the axis of the gear shaft 2, the step face perpendicular to the axis of the speed reducer box body 1 and the gear shaft 2, the inner surface of the speed reducer box body 1 and the outer surface of the sliding seat 4, and an oil supply channel 7 communicated with the inside and the outside of the sealing cavity 8 is arranged on the speed reducer box body 1.

The utility model provides a brake structure which can effectively ensure that each structure in a speed reducer can keep a stable state when a prime motor does not work formally and outputs power. When the oil supply channel 7 is not supplied with oil liquid during operation, the extrusion spring 6 extrudes the sliding seat 4, so that the extrusion spring 6 extrudes the locking structure 5 through the sliding seat 4, the locking structure 5 extrudes the gear shaft 2 through deformation, the gear shaft 2 is fixed through the friction force increased relative to the gear shaft 2, the stability of other structures in the reduction gearbox matched with the gear shaft 2 is effectively ensured, in the condition, the speed reducer does not work, the required friction force is smaller, the locking structure 5 which can be applied to the position in the prior art is more, for example, a combined structure of friction plates and the like are adopted, the locking structure 5 required by the position is a structure which can deform through extrusion, and the selection is easier. When the prime motor receives a control signal and works formally, the oil supply of the oil supply channel 7 can be realized before or synchronously by the control system, so that the sliding seat 4 is extruded to the extrusion spring 6 by the reverse force, the whole sliding seat 4 is free from extruding the locking structure 5, the friction force of the locking structure 5 to the gear shaft 2 is reduced, and the gear shaft 2 can rotate freely under the driving of the prime motor.

As a preference of the above embodiment, the other side of the braking cover 3 relative to the extrusion spring 6 is positioned by the snap spring partially embedded in the inner wall of the reducer case 1, the braking cover 3 is fixed on the side simply, the groove body for installing the snap spring or the installation of the snap spring in the groove body is easy to realize, and the other end of the braking cover 3 can naturally keep a stable state under the extrusion of the extrusion spring 6 without adopting an additional fixing structure.

The outer surface of the brake cover 3 is sealed with the speed reducer box 1 through a sealing structure embedded in the speed reducer box 1, and the requirement for sealing is low due to the fact that the brake cover 3 does not move axially, and only a conventional O-shaped sealing ring is needed.

In order to ensure the stability of the operation of the compression spring 6, the brake cover 3 and/or the sliding seat 4 are provided with mounting grooves 9 for receiving the ends of the compression spring 6. The installation groove 9 is preferably arranged on the sliding seat 4, and the installation purpose is considered, in the installation process, the sliding seat 4 is installed in the speed reducer box body 1 relative to the brake cover 3, after the installation is completed, the extrusion spring 6 can be directly installed, and the phenomenon that the extrusion spring 6 moves relatively in the installation process of a subsequent structure is avoided.

Preferably, the sliding seat 4 is located on the outer surfaces of two sides of the step surface, and the sliding seat is sealed with the speed reducer box 1 through a sealing structure embedded in the speed reducer box 1, that is, effective sealing is realized on two sides of the sealing cavity 8, so that the influence on oil quality due to the fact that impurities and the like enter the sealing cavity 8 is avoided, and more importantly, the pressure relief caused by the fact that the oil in the sealing cavity 8 leaks outwards is avoided.

The sliding seat 4 is provided with two seals at least between one side of the step surface and the speed reducer box body 1, preferably, the two seals are used on one side with a larger sealing area, the processing difficulty of a longer processing surface can be reduced by the mode, and the requirements can be relatively reduced along with the arrangement of the multiple seals like the size requirements of the axiality and the like.

In sealed face can have impurity etc. unavoidably, in order to collect above-mentioned impurity, reduce it and destroy sealed face or seal structure, sliding seat 4 surface is provided with hoop recess 41 between the twice is sealed, forms hoop cavity 10 between hoop recess 41 and the speed reducer box 1 inner wall, and hoop cavity 10 can realize the collection to impurity.

As a preference of the above embodiment, the locking structure 5 is located on the other side of the sliding seat 4 in the axial direction of the gear shaft 2 by a step surface located on the reduction box 1, such a locating manner for the locking structure 5 is simple, and the step surface can participate in the extrusion of the locking structure 5 through stable support.

For the sake of motion sensitivity, the sliding seat 4 comprises two parts, wherein a first part 42 forms a sealed cavity 8 with the reducer casing 1, a second part 43 is in contact with the locking structure 5, and the first part 42 and the second part 43 transmit force through a plane perpendicular to the axis of the gear shaft 2. Through the arrangement of the split type, the weight of the first part 42 which is driven by the oil supplied through the oil supply channel 7 is reduced, so that the action sensitivity of brake release can be improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a speed reducer brake structure, its characterized in that sets up between speed reducer box and gear shaft, includes:

2. The reducer brake structure of claim 1, wherein the other side of the brake cover relative to the extrusion spring is positioned by a snap spring partially embedded in the inner wall of the reducer case.

3. The speed reducer brake structure according to claim 1 or 2, wherein the outer surface of the brake cover is sealed with the speed reducer box through a sealing structure embedded in the speed reducer box.

4. The reducer brake structure of claim 1, wherein the brake cover and/or the sliding seat are provided with mounting grooves for receiving ends of the compression spring.

5. The reducer brake structure of claim 4, wherein the mounting groove is disposed on the sliding seat.

6. The brake structure of the speed reducer according to claim 1, wherein the sliding seat is located on the outer surface of each of two sides of the step surface, and the sliding seat is sealed with the speed reducer box body through a sealing structure embedded in the speed reducer box body.

7. The reduction gear brake structure of claim 6, wherein the sliding seat is provided with two seals at least between one side of the step surface and the reduction gear box body.

8. The brake structure of the speed reducer according to claim 7, wherein the outer surface of the sliding seat is provided with a circumferential groove between two seals, and a circumferential cavity is formed between the circumferential groove and the inner wall of the speed reducer box body.

9. The reducer brake structure of claim 1, wherein the locking structure is positioned by a stepped surface on the reducer case, on the other side of the gear shaft with respect to the sliding seat in the axial direction.

10. A reducer brake structure according to claim 1 or 9, wherein the sliding seat comprises two parts, a first part of the sliding seat and the reducer casing form the sealed cavity, a second part of the sliding seat is in contact with the locking structure, and the first part and the second part transmit force through a plane perpendicular to the axis of the gear shaft.