CN210920040U - Axial locking device of cycloidal steel ball speed reducer - Google Patents
Axial locking device of cycloidal steel ball speed reducer Download PDFInfo
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- CN210920040U CN210920040U CN201921481941.6U CN201921481941U CN210920040U CN 210920040 U CN210920040 U CN 210920040U CN 201921481941 U CN201921481941 U CN 201921481941U CN 210920040 U CN210920040 U CN 210920040U
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- bearing
- speed reducer
- steel ball
- transmission shaft
- locking device
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Abstract
The utility model belongs to the reducer field, and relates to an axial locking device of a cycloidal steel ball reducer, which comprises a transmission shaft; the bearing is arranged at one end of the transmission shaft; the locking nut is arranged on one side of the bearing close to the end part of the transmission shaft and used for fixing the bearing; an elastic body disposed between the bearing and the lock nut; and the shell is sleeved outside the supporting bearing. The utility model realizes the fixation of the bearing by compressing the elastic body, eliminates the clearance in the thread transmission pair by the action of the compressed elastic body on the locking nut, can effectively prevent the locking nut from loosening, and realizes the reliable locking of the axial direction of the reducer; when the internal parts of the speed reducer are abraded to cause the gap between the transmission pairs to be enlarged, the compressed elastic bodies push the bearing and the transmission shaft to move axially, so that the gap generated by the internal parts of the speed reducer due to abrasion is eliminated, and automatic compensation is realized.
Description
Technical Field
The utility model belongs to the reduction gear field relates to a cycloid steel ball reduction gear axial locking device.
Background
In the process of transmitting power, the cycloidal steel ball speed reducer generates axial acting force between adjacent parts. Therefore, in the assembly process of the cycloid steel ball speed reducer, the speed reducer is axially locked, the axial acting force of parts in the speed reducer is balanced, the axial movement of the parts is limited, and the reliable transmission of the speed reducer is guaranteed.
In the prior art, the speed reducer is usually fixed in a mode that nuts are arranged at the end part of the speed reducer, and the nuts are locked by arranging jackscrews in the radial direction of a shell, so that the nuts are prevented from loosening. But the locking amount of the nut in the scheme is adjusted through the jackscrew, so that the locking amount is not convenient to control; and the nut is in rigid contact with the part to be pre-tightened, and if the part is worn, the nut cannot perform clearance compensation, so that the transmission precision of the speed reducer is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a cycloid steel ball reduction gear axial locking device, through the automatic compensation of elastomer, guarantees the reliability and the long-term transmission precision of device operation.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a cycloidal steel ball speed reducer axial locking device, comprising: a drive shaft; the bearing is arranged at one end of the transmission shaft; the locking nut is arranged on one side of the bearing close to the end part of the transmission shaft and used for fixing the bearing; an elastic body disposed between the bearing and the lock nut; and the shell is sleeved outside the supporting bearing.
Optionally, the elastomer is a metal elastomer.
Optionally, the metal elastomer is a multi-wave spring or a diaphragm spring.
Optionally, one end of the transmission shaft is provided with a stepped shaft, the diameter of the cross section of the step closest to the end of the transmission shaft is the smallest, and the first step and the second step are respectively arranged along the direction far away from the end of the transmission shaft.
Optionally, the bearing is provided on the second step.
Optionally, the locking nut is disposed on the first step.
The beneficial effects of the utility model reside in that:
the utility model realizes the fixation of the bearing by compressing the elastic body, eliminates the clearance in the thread transmission pair by the acting force generated by the elastic body to the locking nut, can effectively prevent the locking nut from loosening, and realizes the reliable locking of the reducer; in addition, when the clearance between the transmission pair becomes bigger due to the abrasion of the internal parts of the speed reducer, the compressed elastic body rebounds to push the bearing and the transmission shaft to axially move, so that the clearance generated by the internal parts of the speed reducer due to the abrasion is eliminated, and the automatic compensation is realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to FIG. 1, the reference numbers in the drawings denote: the transmission shaft comprises a transmission shaft 1, a bearing 2, a shell 3, an elastic body 4 and a locking nut 5.
The utility model discloses mainly include transmission shaft 1, bearing 2, casing 3, metal elastomer 4 and lock nut 5. A bearing 2 is arranged on the transmission shaft 1, the bearing 2 is arranged in an inner hole of the shell 3, a metal elastic body 4 is arranged on the side surface of the bearing 2, and a locking nut 5 is arranged on the side surface of the metal elastic body 4. The metal elastic body 4 may be a metal elastic body such as a multiwave spring or a diaphragm spring. The locking nut 5 compresses the metal elastic body 4 on the bearing 2 through the screw pair, and the bearing 2 drives the transmission shaft 1 to move axially, so that the axial compression of the internal parts of the speed reducer is realized.
In order to guarantee that bearing 2 and lock nut 5 are fixed better, one of transmission shaft 1 is served and is equipped with the ladder, and the ladder diameter that is closest to 1 tip of transmission shaft is minimum, is first ladder and second ladder respectively along the direction of keeping away from 1 tip of transmission shaft, bearing 2 sets up on the second ladder, lock nut 5 sets up on first ladder.
Preferably, the locking amount of the locking nut 5 can be increased, so that the metal elastic body 4 is further compressed to generate a larger elastic force, further compression of the internal parts of the speed reducer is realized, and the gap between the internal parts is further reduced. The accurate transmission of motion can be guaranteed more, and the transmission precision is improved. Meanwhile, after the elastic body is compressed, outward reverse thrust can be generated to push the nut to move reversely, gaps in the threaded transmission pair are eliminated, loosening of the threaded connection pair is effectively prevented, and reliable locking of the speed reducer is achieved.
In addition, when the internal parts of the speed reducer are worn to cause the increase of the gap between the transmission pairs, the compressed elastic body 4 pushes the bearing 2 and the transmission shaft 1 to axially move under the action of the spring force, so that the gap caused by the wear in the parts is eliminated, and the automatic compensation of the gap is realized.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (6)
1. The axial locking device of the cycloid steel ball speed reducer is characterized by comprising:
a drive shaft;
the bearing is arranged at one end of the transmission shaft;
the locking nut is arranged on one side of the bearing close to the end part of the transmission shaft and used for fixing the bearing;
an elastic body disposed between the bearing and the lock nut;
and the shell is sleeved outside the bearing.
2. The cycloidal steel ball speed reducer axial locking device of claim 1 wherein said elastomer is a metal elastomer.
3. The cycloidal steel ball speed reducer axial locking device of claim 2 wherein said metal elastomer is a multi-wave spring or a diaphragm spring.
4. The axial locking device of a cycloid steel ball speed reducer of claim 1 wherein the drive shaft has a stepped shaft at one end, the step closest to the end of the drive shaft having the smallest cross-sectional diameter being the first step and the second step, respectively, in the direction away from the end of the drive shaft.
5. The cycloidal steel ball speed reducer axial locking device of claim 4, wherein said bearing is disposed on a second step.
6. The cycloidal steel ball speed reducer axial locking device of claim 4, wherein said lock nut is disposed on a first step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921481941.6U CN210920040U (en) | 2019-09-06 | 2019-09-06 | Axial locking device of cycloidal steel ball speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921481941.6U CN210920040U (en) | 2019-09-06 | 2019-09-06 | Axial locking device of cycloidal steel ball speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210920040U true CN210920040U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921481941.6U Active CN210920040U (en) | 2019-09-06 | 2019-09-06 | Axial locking device of cycloidal steel ball speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210920040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112297346A (en) * | 2020-10-16 | 2021-02-02 | 珠海格力智能装备有限公司 | Mould adjusting mechanism and injection molding machine with same |
-
2019
- 2019-09-06 CN CN201921481941.6U patent/CN210920040U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112297346A (en) * | 2020-10-16 | 2021-02-02 | 珠海格力智能装备有限公司 | Mould adjusting mechanism and injection molding machine with same |
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