CN211778469U - Stepless adjustable eccentric mechanism - Google Patents
Stepless adjustable eccentric mechanism Download PDFInfo
- Publication number
- CN211778469U CN211778469U CN202020398974.0U CN202020398974U CN211778469U CN 211778469 U CN211778469 U CN 211778469U CN 202020398974 U CN202020398974 U CN 202020398974U CN 211778469 U CN211778469 U CN 211778469U
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- eccentric
- inner sleeve
- hole
- screw rod
- eccentric inner
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- Expired - Fee Related
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Abstract
A stepless adjustable eccentric mechanism comprises a locking nut, a left eccentric inner sleeve, a jacking screw rod, an outer eccentric sleeve, a guide flat key, a mandrel, a right eccentric inner sleeve and a tensioning screw rod. Through holes are formed in the same positions of the left eccentric inner sleeve and the right eccentric inner sleeve, and the diameter of the through hole of the left eccentric inner sleeve is larger than that of the through hole of the right eccentric inner sleeve. The jacking screw is jacked on the side surface of the right eccentric inner sleeve through the through hole of the left eccentric inner sleeve. The right part of the tightening screw rod is provided with a threaded hole, and the tensioning screw rod is connected with the threaded hole of the tightening screw rod through a through hole of the right eccentric inner sleeve. The mechanism can steplessly adjust the eccentricity, and the adjusted eccentricity can be reliably kept unchanged in the working process.
Description
Technical Field
The invention relates to a stepless adjustable eccentric mechanism.
Background
The eccentricity of the adjustable eccentric mechanism is generally adjusted in steps, i.e. selected among several set eccentricity values. Some experimental equipment needs to adjust the eccentricity steplessly, and the adjusted eccentricity needs to be ensured to be reliably kept unchanged in the working process.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a stepless adjustable eccentric mechanism, the eccentric amount of which can be adjusted in a stepless manner, and the adjusted eccentric amount can be reliably kept unchanged in the working process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the designed stepless adjustable eccentric mechanism comprises a locking nut, a left eccentric inner sleeve, a jacking screw rod, an outer eccentric sleeve, a guide flat key, a mandrel, a right eccentric inner sleeve and a tensioning screw rod, wherein the eccentric hole of the outer eccentric sleeve is provided with a left thread and a right thread with the same parameters but opposite rotation directions, the outer column of the left eccentric inner sleeve is made into a thread, the parameters of the thread are the same as the left thread of the eccentric hole of the rotation direction and the outer eccentric sleeve, the outer column of the right eccentric inner sleeve is made into a thread, the parameters of the thread are the same as the right thread of the eccentric hole of the rotation direction and the outer eccentric sleeve, the guide flat key is fixedly arranged on the mandrel, the eccentric amounts of the left eccentric inner sleeve and the right eccentric inner sleeve are the same and are in sliding fit with the guide flat key, through holes are arranged at the same positions of the left eccentric inner sleeve and the right eccentric inner sleeve, the diameter of the through hole of the left eccentric inner sleeve is larger than that of the, the right part of the jacking screw rod is provided with a threaded hole, the tensioning screw rod is connected with the threaded hole of the jacking screw rod through a through hole of the right eccentric inner sleeve, and the left part of the jacking screw rod is provided with an external thread and an inner hexagonal hole.
The working principle of the invention is as follows: the eccentricity of the mechanism is determined by the relative circumferential positions of the outer eccentric sleeve and the left eccentric inner sleeve and the right eccentric inner sleeve. During adjustment, the locking nut and the tightening screw are firstly loosened to be in threaded connection with the jacking screw. Then, the outer eccentric sleeve rotates relative to the left eccentric inner sleeve and the right eccentric inner sleeve to obtain the required eccentric amount according to the requirement. The eccentric amount can be adjusted steplessly because the amount of rotation of the outer eccentric sleeve relative to the left eccentric inner sleeve and the right eccentric inner sleeve can be any. When the relative rotation occurs, the left eccentric inner sleeve and the right eccentric inner sleeve move outwards or inwards simultaneously. And then, the locking nut is screwed down and the tightening screw rod is in threaded connection with the jacking screw rod, so that the adjustment is completed. The movement of the left eccentric inner sleeve and the right eccentric inner sleeve is limited by the tensioning screw rod and the jacking screw rod, so that the adjusted eccentric amount is reliably kept unchanged in the working process.
The invention has the beneficial effects that: the eccentric amount can be adjusted steplessly, and the adjusted eccentric amount can be reliably kept unchanged in the working process.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a right side view of fig. 1.
In the figure, 1, a locking nut, 2, a left eccentric inner sleeve, 3, a jacking screw rod, 4, an outer eccentric sleeve, 5, a guide flat key, 6, a mandrel, 7, a right eccentric inner sleeve and 8, a tensioning screw rod are arranged.
Detailed Description
As shown in fig. 1 and 2, the stepless adjustable eccentric mechanism according to the embodiment of the present invention includes a lock nut 1, a left eccentric inner sleeve 2, a tightening screw 3, an outer eccentric sleeve 4, a guide flat key 5, a mandrel 6, a right eccentric inner sleeve 7, and a tightening screw 8. The eccentric hole of the outer eccentric sleeve 4 is provided with a left thread and a right thread with the same parameters but opposite rotating directions. The outer column of the left eccentric inner sleeve 2 is made into a thread, and the parameters of the thread are the same as the rotating direction and the left section thread of the eccentric hole of the outer eccentric sleeve 4; the outer column of the right eccentric inner sleeve 7 is made into a thread, and the parameters of the thread are the same as the right section of the thread of the eccentric hole of the rotating direction and the outer eccentric sleeve 4. The guide flat key 5 is fixedly arranged on the mandrel 6, and the eccentric amounts of the left eccentric inner sleeve 2 and the right eccentric inner sleeve 7 are the same and are in sliding fit with the guide flat key 5. Through holes are formed in the left eccentric inner sleeve 2 and the right eccentric inner sleeve 7 at the same position, and the diameter of the through hole of the left eccentric inner sleeve 2 is larger than that of the through hole of the right eccentric inner sleeve 7. The jacking screw rod 3 is jacked on the side surface of the right eccentric inner sleeve 7 through a through hole of the left eccentric inner sleeve 2, and a threaded hole is formed in the right part of the jacking screw rod 3. The tightening screw rod 8 is connected with the threaded hole of the tightening screw rod 3 through the through hole of the right eccentric inner sleeve 7. The left part of the jacking screw rod 3 is provided with an external thread and an inner hexagonal hole.
The eccentricity of the mechanism is determined by the relative circumferential positions of the outer eccentric sleeve 4 and the left eccentric inner sleeve 2 and the right eccentric inner sleeve 7. During adjustment, the locking nut 1 and the tightening screw 8 are firstly loosened to be connected with the screw thread of the jacking screw 3. Then, the outer eccentric sleeve 4 is rotated relative to the left eccentric inner sleeve 2 and the right eccentric inner sleeve 7 as required to obtain the required eccentric amount. Since the amount of rotation of the outer eccentric sleeve 4 with respect to the left and right eccentric inner sleeves 2 and 7 can be arbitrary, the amount of eccentricity can be steplessly adjusted. When the relative rotation occurs, the left eccentric inner sleeve 2 and the right eccentric inner sleeve 7 move outward or inward at the same time. Then, the lock nut 1 and the tightening screw 8 are screwed to the screw thread of the tightening screw 3, and the adjustment is completed. Because the tensioning screw rod 8 and the jacking screw rod 3 limit the movement of the left eccentric inner sleeve 2 and the right eccentric inner sleeve 7, the adjusted eccentric amount is ensured to be reliably kept unchanged in the working process.
Claims (1)
1. The utility model provides a stepless adjustable eccentric mechanism, includes lock nut, left eccentric endotheca, top tight screw rod, outer eccentric cover, direction parallel key, mandrel, right eccentric endotheca, taut screw rod, its characterized in that: the eccentric hole of the outer eccentric sleeve is provided with a left thread and a right thread with the same parameters but opposite rotation directions, the outer column of the left eccentric inner sleeve is made into a thread, the parameters of the screw thread are the same as the screw thread of the left section of the eccentric hole of the rotating direction and the outer eccentric sleeve, the outer column of the right eccentric inner sleeve is made into the screw thread, the parameters of the screw thread are the same as the screw thread of the right section of the eccentric hole of the rotating direction and the outer eccentric sleeve, the guide flat key is fixedly arranged on the mandrel, the eccentric amount of the left eccentric inner sleeve and the right eccentric inner sleeve is the same and is in sliding fit with the guide flat key, through holes are arranged at the same positions of the left eccentric inner sleeve and the right eccentric inner sleeve, the diameter of a through hole of the left eccentric inner sleeve is larger than that of a through hole of the right eccentric inner sleeve, the jacking screw rod jacks on the side face of the right eccentric inner sleeve through the through hole of the left eccentric inner sleeve, a threaded hole is formed in the right part of the jacking screw rod, the tensioning screw rod is connected with the threaded hole of the jacking screw rod through the through hole of the right eccentric inner sleeve, and an external thread and an inner hexagonal hole are formed in the left part of the jacking screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020398974.0U CN211778469U (en) | 2020-03-26 | 2020-03-26 | Stepless adjustable eccentric mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020398974.0U CN211778469U (en) | 2020-03-26 | 2020-03-26 | Stepless adjustable eccentric mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211778469U true CN211778469U (en) | 2020-10-27 |
Family
ID=72932015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020398974.0U Expired - Fee Related CN211778469U (en) | 2020-03-26 | 2020-03-26 | Stepless adjustable eccentric mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211778469U (en) |
-
2020
- 2020-03-26 CN CN202020398974.0U patent/CN211778469U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 Termination date: 20210326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |