CN203656078U - Chain tensioning device - Google Patents
Chain tensioning device Download PDFInfo
- Publication number
- CN203656078U CN203656078U CN201320770793.6U CN201320770793U CN203656078U CN 203656078 U CN203656078 U CN 203656078U CN 201320770793 U CN201320770793 U CN 201320770793U CN 203656078 U CN203656078 U CN 203656078U
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- CN
- China
- Prior art keywords
- connecting lever
- chain
- tensioning
- elastic force
- tensioning support
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- Expired - Fee Related
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Abstract
The utility model discloses a chain tensioning device. The chain tensioning device comprises a tensioning support and a connecting lever arranged on the tensioning support. A driven arm of the connecting lever is provided with a tensioning chain wheel. The rotation axis of the tensioning chain wheel is parallel to the rotation axis of the connecting lever. An elastic piece is connected between a driving arm of the connecting lever and the tensioning support and exerts elastic force on the connecting lever to make the connecting lever rotate round the axis of the connecting lever. When the tensioning chain wheel is meshed with a chain of a chain transmission mechanism, the elastic piece connected to the driving arm of the connecting lever exerts elastic force used for chain tensioning on the driven arm of the connecting lever and the tensioning chain wheel, the elastic force is released in time when the chain becomes loose again and tensions the chain again, compensation is achieved automatically, and the chain can be tensioned for a long time.
Description
Technical field
The utility model relates to a kind of chain stretching device.
Background technique
In agricultural harvesting machinery, chain transmission is a kind of modal power transmission mode, and chain strengthens in the back pitch that works long hours, and relaxation phenomenon occurs, and chain can not effectively be engaged with sprocket wheel, and transmission capacity declines.
Chinese patent CN102628498A discloses a kind of chain wheel tension mechanism, comprises that fixed base and guiding movement are assemblied in the sprocket wheel supporting base on fixed base, and sprocket wheel supporting base is provided with tension sprocket, between fixed base and sprocket wheel supporting base, is provided with set screw; When use, tension sprocket is engaged with the chain of chain wheel driving mechanism, regulate the rate of tension of tension sprocket to chain by the position of adjusting sprocket wheel supporting base; This tensioning mechanism in use needs to carry out tension chain by the position of continuous adjustment tension sprocket, inconvenient operation, and also easily loosening while carrying out tensioning, cause beating of chain, affect the performance of machine.
Model utility content
The purpose of this utility model is to provide a kind of tension device that can automatically realize the chain tension of chain drive.
The utility model adopts following technological scheme: a kind of chain stretching device, comprise tensioning support and be arranged on the connecting lever on tensioning support, the slave arm of connecting lever is provided with tension sprocket, the rotation axis of tension sprocket is parallel with the rotation axis of connecting lever, is connected with the elastic component that connecting lever is applied to the elastic force of rotating around self axis between the master arm of connecting lever and tensioning support.
On described tensioning support, be also provided with the flexible adjustment mechanism of adjustable elastic part elastic force, this mechanism comprises that spiral is screwedly mounted on the adjusting screw rod on tensioning support and is screwed in the locking nut on adjusting screw rod, and the corresponding end of described elastic component is connected on adjusting screw rod.
The master arm of described connecting lever is wedge shape.
Angle between master arm and the slave arm of described connecting lever is 90 °.
Described elastic component is extension spring.
Adopt the tension device of said structure, because tension sprocket is installed on the slave arm of connecting lever, in the time that tension sprocket engages with the chain of chain drive, the slave arm of the elastic component connecting on connecting lever master arm to connecting lever and tension sprocket apply the elastic force of tension chain, this elastic force discharges also in time tension chain again in the time that chain is again lax, automatically realize compensation, the tensioning that can keep for a long time chain.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment's of the present utility model structural representation.
Embodiment
The embodiment of the utility model chain stretching device: as shown in Figure 1, comprise tensioning support (not shown), tensioning support is provided with the connecting lever 2 of the axis rotation of extending around fore-and-aft direction, angle between master arm and the slave arm of connecting lever 2 is 90 °, and the master arm of connecting lever is wedge shape, be conducive to like this guarantee the intensity of connecting lever 2, be rotatably equipped with tension sprocket 1 on the slave arm of connecting lever 2, the rotation axis of tension sprocket 1 is parallel with the rotation axis of connecting lever 2; The right side spiral that is positioned at connecting lever 2 on tensioning support is screwed the adjusting screw rod 5 extending along left and right directions, between the master arm of the left end of adjusting screw rod 5 and connecting lever 2, be connected with extension spring 3, extension spring 3 applies elastic force to the right to the master arm of connecting lever 2, the large I of this elastic force regulates by screwing adjusting screw rod 5, and adjusting screw rod 5 is realized self locking and positioning by two locking nuts 4 that screw on it, adjusting screw rod 5 coordinates the flexible adjustment mechanism that forms adjusting extension spring elastic force with two locking nuts 4.
Above-described embodiment in use, tension sprocket 1 is engaged with the chain of chain wheel driving mechanism, the elastic force that extension spring 3 applies connecting lever 2 drives connecting lever 2 to drive tension sprocket 1 to compress chain, regulate the elastic force of extension spring 3 by screwing adjusting screw rod 5, regulate the tensioning degree of tension sprocket 1 to chain, and in use, once again there is relaxation phenomenon in chain, the elastic force of extension spring 3 discharges a part, and again orders about connecting lever 2 and drive tension sprocket 1 to compress chain.
In other embodiments, flexible adjustment mechanism also can adopt guiding movement to be assemblied in the slide block on tensioning support, the corresponding end of extension spring is connected to and on slide block, regulates extension spring elastic force, and slide block is realized self poisoning by positioning screwn.
In above-described embodiment, extension spring is the elastic component that connecting lever is applied to elastic force, and this elastic force is pulling force, and in other embodiments, elastic component can be also stage clip, and the elastic force like this connecting lever being applied is pressure.
Claims (5)
1. a chain stretching device, it is characterized in that: comprise tensioning support and be arranged on the connecting lever on tensioning support, the slave arm of connecting lever is provided with tension sprocket, the rotation axis of tension sprocket is parallel with the rotation axis of connecting lever, is connected with the elastic component that connecting lever is applied to the elastic force of rotating around self axis between the master arm of connecting lever and tensioning support.
2. chain stretching device according to claim 1, it is characterized in that: the flexible adjustment mechanism that is also provided with adjustable elastic part elastic force on described tensioning support, this mechanism comprises that spiral is screwedly mounted on the adjusting screw rod on tensioning support and is screwed in the locking nut on adjusting screw rod, and the corresponding end of described elastic component is connected on adjusting screw rod.
3. chain stretching device according to claim 1, is characterized in that: the master arm of described connecting lever is wedge shape.
4. chain stretching device according to claim 1, is characterized in that: the angle between master arm and the slave arm of described connecting lever is 90 °.
5. according to the chain stretching device described in claim 1-4 any one, it is characterized in that: described elastic component is extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320770793.6U CN203656078U (en) | 2013-11-30 | 2013-11-30 | Chain tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320770793.6U CN203656078U (en) | 2013-11-30 | 2013-11-30 | Chain tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656078U true CN203656078U (en) | 2014-06-18 |
Family
ID=50922468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320770793.6U Expired - Fee Related CN203656078U (en) | 2013-11-30 | 2013-11-30 | Chain tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656078U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377479A (en) * | 2017-08-17 | 2017-11-24 | 哈密天诚新能源设备维护有限公司 | Integrated contactless solar panels cleaning equipment |
| CN108953523A (en) * | 2018-08-07 | 2018-12-07 | 真木农业设备（安徽）有限公司 | A kind of chain stretching device |
-
2013
- 2013-11-30 CN CN201320770793.6U patent/CN203656078U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107377479A (en) * | 2017-08-17 | 2017-11-24 | 哈密天诚新能源设备维护有限公司 | Integrated contactless solar panels cleaning equipment |
| CN107377479B (en) * | 2017-08-17 | 2023-09-12 | 哈密天诚新能源设备维护有限公司 | Integrated touchless solar panel cleaning device |
| CN108953523A (en) * | 2018-08-07 | 2018-12-07 | 真木农业设备（安徽）有限公司 | A kind of chain stretching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20141130 |
|
| EXPY | Termination of patent right or utility model |