CN202883817U - Roller type non-return device and power driven actuator with non-return device - Google Patents
Roller type non-return device and power driven actuator with non-return device Download PDFInfo
- Publication number
- CN202883817U CN202883817U CN 201220429143 CN201220429143U CN202883817U CN 202883817 U CN202883817 U CN 202883817U CN 201220429143 CN201220429143 CN 201220429143 CN 201220429143 U CN201220429143 U CN 201220429143U CN 202883817 U CN202883817 U CN 202883817U
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- return device
- roller
- wedge space
- lug boss
- star
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Abstract
The utility model discloses a roller type non-return device and power driven actuator with non-return device. The roller type non-return device and power driven actuator with non-return device comprises an outer ring. The roller type backstop and power driven actuator with backstop is characterized in that a star wheel is arranged in the outer ring. Poking claws are arranged between the star wheel and the inner wall of the outer ring. At least one protrusion part is arranged on the surface of the star wheel and wedge space is formed by the surface of the star wheel and the inner wall of the outer ring by the protrusion part. A rolling column is arranged in the wedge space and a gap at one end close to the protrusion part in the wedge space is larger than a diameter of the rolling column. The gap far away from one end of the protrusion part in a groove body is smaller than the diameter of the rolling column. An elastic component is arranged between the protrusion part and the rolling column and the rolling column is clamped in the wedge space by the elastic component. The roller type backstop and power driven actuator with backstop is high in efficiency and good in backstopping effect. The utility model provides a power driven actuator. The utility model comprises the non-return device.
Description
Technical field
The utility model relates to a kind of non-return device, relates in particular to a kind of roller type brake.
Background technique
At present, the transportation of gas or liquid medium adopts pipeline to finish more, and further the flow for the control pipeline internal medium is equipped with control valve at pipeline usually.The open and close of initial control valve are by manual control, yet along with the progress of science and technology adopts electric actuator to finish to the open and close of control valve mostly, when closing fully, control valve can produce certain reverse pressure difference in the pipeline, the existence of this reverse pressure difference can cause the medium back flow in the pipeline, thereby can force the valve plate counter-rotating of control valve, the counter-rotating of valve plate will inevitably the driving electric final controlling element motor reversal, because the counter-rotating of motor can cause the damage of motor, therefore usually non-return device is installed to prevent the counter-rotating of valve plate drive motor in electric actuator, existing non-return device mainly cooperatively interacts to realize return-stopping function by the check gear, this kind gear structure in use mainly exists mechanical efficiency low, the defective that the check effect is relatively poor and problem.
Summary of the invention
Technical problem to be solved in the utility model provides preferably roller type brake of a kind of efficient height, check effect.
For solving the problems of the technologies described above, the utility model provides a kind of roller type brake, comprise outer shroud, be provided with star-wheel in the described outer shroud, be provided with pusher dog between described star-wheel and the described outer shroud inwall, described star-wheel surface has at least one lug boss, described lug boss makes between described star-wheel surface and the described outer shroud inwall and forms the wedge space, described wedge is provided with roller in the space, the gap of nearly described lug boss one end is greater than the diameter of described roller in the described wedge space, in the described wedge space away from the gap of the described lug boss one end diameter less than described roller, be provided with elastic element between described lug boss and the described roller, by described elastic element described roller be stuck in the described wedge space.
Described elastic element is helical spring.
Described lug boss is two and is symmetrical arranged.
In addition, the utility model provides a kind of electric actuator, comprises described non-return device.
Compared with prior art, the beneficial effects of the utility model are:
Because a kind of roller type brake of the present utility model is when the star-wheel counterrotating, since have in the wedge space one section can wedge rollers the space, be the gap less than the position of the diameter of roller, so when star-wheel rotates as driving link, roller be subjected to the frictional force effect by wedging in the wedge space, form self-locking, thereby can stop star-wheel to continue counter-rotating, finally play the effect of check, this check process is effective and rapid, therefore the utility model efficient is high, and the check effect is better.
Description of drawings
Below in conjunction with drawings and embodiments the utility model is elaborated
Fig. 1 is structural representation of the present utility model.
Among the figure: outer shroud 10, pusher dog 12, star-wheel 14, lug boss 16, wedge space 18, roller 20, elastic element 22.
Embodiment
Referring to shown in Figure 1, roller type brake of the present utility model, comprise outer shroud 10, pusher dog 12 and star-wheel 14, wherein: star-wheel 14 is arranged on the inside of outer shroud 10, pusher dog 12 is between the inwall that is arranged on star-wheel 14 and outer shroud 10 at two and interval, symmetrically on the star-wheel 14 be provided with two lug bosses 16, this lug boss 16 is spaced from each other two pusher dogs 12 and makes in its both sides between the inwall of the surface of star-wheel 14 and outer shroud 10 and forms respectively wedge space 18, in wedge space 18, be respectively arranged with roller 20, the gap of close lug boss 16 1 ends is greater than the diameter of roller 20 in the wedge space 18, be that roller 20 herein can be freely movable, in the opposite wedge space 18 away from an end of lug boss 16 namely near the gap of pusher dog 12 1 ends less than the diameter of roller 20 but pusher dog 12 is entered in the wedge space 18, for making non-return device of the present utility model can be in faster non-return state, between lug boss 16 and roller 20, elastic element 22 is installed, by this elastic element roller 20 is stuck in the wedge space 18, aforesaid elastic element 22 is preferably helical spring, pusher dog 12 is connected with the pto＝power take-off of electric actuator during use, star-wheel 14 is connected with valve plate, when rotating, the pto＝power take-off normal forward of electric actuator at first drives pusher dog 12 in outer shroud 10 interior rotations, then thereby pusher dog 12 enters wedge space 18 interior promotion rollers 20 to lug boss and drives the open and close that valve plate is controlled in star-wheel 14 rotations, when the stressed counter-rotating of valve plate, at first drive star-wheel 14 reverse rotation, since in the wedge space 18 away from the gap of the lug boss one end diameter less than roller 20, be subjected to frictional force effect roller 20 by wedging in wedge space 18, form self-locking, star-wheel 14 can't reverse rotation, thereby has played the effect of check.
The above only is preferred embodiments of the present invention; protection scope of the present invention is not limited with above-mentioned mode of execution; as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (4)
1. roller type brake, comprise outer shroud, it is characterized in that: be provided with star-wheel in the described outer shroud, be provided with pusher dog between described star-wheel and the described outer shroud inwall, described star-wheel surface has at least one lug boss, described lug boss makes between described star-wheel surface and the described outer shroud inwall and forms the wedge space, described wedge is provided with roller in the space, the gap of nearly described lug boss one end is greater than the diameter of described roller in the described wedge space, in the described wedge space away from the gap of the described lug boss one end diameter less than described roller, be provided with elastic element between described lug boss and the described roller, by described elastic element described roller be stuck in the described wedge space.
2. non-return device according to claim 1, it is characterized in that: described elastic element is helical spring.
3. non-return device according to claim 1 and 2, it is characterized in that: described lug boss is two and is symmetrical arranged.
4. an electric actuator is characterized in that: comprise each described non-return device in the claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429143 CN202883817U (en) | 2012-08-28 | 2012-08-28 | Roller type non-return device and power driven actuator with non-return device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429143 CN202883817U (en) | 2012-08-28 | 2012-08-28 | Roller type non-return device and power driven actuator with non-return device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883817U true CN202883817U (en) | 2013-04-17 |
Family
ID=48075248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220429143 Expired - Fee Related CN202883817U (en) | 2012-08-28 | 2012-08-28 | Roller type non-return device and power driven actuator with non-return device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883817U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869569A (en) * | 2018-09-17 | 2018-11-23 | 太原理工大学 | A kind of roller Bidirectional non-return device |
| CN109139737A (en) * | 2018-09-17 | 2019-01-04 | 太原理工大学 | A kind of roller clutch for pipeline correction |
| CN111085841A (en) * | 2019-12-27 | 2020-05-01 | 东南大学 | Motor transmission anti-blocking drive plate |
-
2012
- 2012-08-28 CN CN 201220429143 patent/CN202883817U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869569A (en) * | 2018-09-17 | 2018-11-23 | 太原理工大学 | A kind of roller Bidirectional non-return device |
| CN109139737A (en) * | 2018-09-17 | 2019-01-04 | 太原理工大学 | A kind of roller clutch for pipeline correction |
| CN111085841A (en) * | 2019-12-27 | 2020-05-01 | 东南大学 | Motor transmission anti-blocking drive plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181218 Address after: Room 904, 9th floor, 18 East Street, Tianshuiyuan, Chaoyang District, Beijing Patentee after: BEIJING SAILIN XINNENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 215000 Chunwang Road, Panyang Industrial Park, Huangduo Town, Xiangcheng District, Suzhou City, Jiangsu Province, 8-3 Patentee before: SUZHOU BONRAY MEASURE & CONTROL EQUIPMENT Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20210828 |