CN202082460U - Torsion spring excessive force protection mechanism for electric valve actuator - Google Patents
Torsion spring excessive force protection mechanism for electric valve actuator Download PDFInfo
- Publication number
- CN202082460U CN202082460U CN2011201443780U CN201120144378U CN202082460U CN 202082460 U CN202082460 U CN 202082460U CN 2011201443780 U CN2011201443780 U CN 2011201443780U CN 201120144378 U CN201120144378 U CN 201120144378U CN 202082460 U CN202082460 U CN 202082460U
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- CN
- China
- Prior art keywords
- torsion spring
- electric valve
- excessive force
- actuator
- boxboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Electrically Driven Valve-Operating Means (AREA)
Abstract
The utility model provides a torsion spring excessive force protection mechanism for an electric valve actuator. An upper case board and a lower case board are arranged at the upper part of the electric valve actuator; the upper case board is fixedly connected with the lower case board through an upright post; a transmission gear and a torsion frame are installed in the space between the upper case board and the lower case board; a torsion spring is installed on one side of the torsion frame; and a limit switch is installed on the lower case board. The torsion spring excessive force protection mechanism with simple structure can control the power output of the actuator through a torsion spring and the limit switch and achieve the whole stroke excessive force protection for the actuator, so that an electric motor can be protected effectively, the service life of the actuator can be prolonged, and the reliability of the actuator can be improved. The torsion spring excessive force protection mechanism is suitable for being used and installed on an electric valve.
Description
Technical field
The utility model is the protective gear that dynamo-electric field is used for electric valve, specifically electric valve actuator torsion spring exertin protection mechanism.
Background technique
Before the utility model proposes, electric actuator has only position-limit mechanism, and position-limit mechanism is general only just to work in the high-low limit position of final controlling element, this limit method be have very big circumscribed.
Final controlling element in the course of the work; when running to limit position; will feed back to controller; come to cut off the power supply by controller again to final controlling element; thereby play the effect of protection final controlling element; but this position-limit mechanism has significant limitation; because in the total travel of final controlling element operation; have only two location points that limit function is arranged; when running into not at limit position in running, final controlling element surpasses under the loading condition of self ouput force; controller can not cut off the power supply to final controlling element, thereby does not have the effect of protection final controlling element, influences the life-span of final controlling element.
Summary of the invention
At the existing shortcoming of existing electric valve actuator, the utility model provides electric valve actuator torsion spring exertin protection mechanism.This mechanism solves the technical problem of electric valve actuator safety protection by limiting board and torsion spring are installed on final controlling element.
The scheme that the utility model technical solution problem is adopted: on the top of electric valve actuator, be provided with boxboard and following boxboard, fixedly connected by column between last boxboard and the following boxboard, driving gear is installed in the clearance space between last boxboard and following boxboard and reverses frame, torsion spring is installed reversing frame one side, on the last boxboard limit switch is installed.
Good effect, the utility model is simple in structure, by the ouput force of torsion spring and limit switch control final controlling element, plays the exertin protection to the final controlling element total travel, thereby effectively protects motor, improve final controlling element working life, and has increased the reliability of final controlling element.Suit on electric valve, to install and use.
Description of drawings:
Fig. 1 is the utility model form structure schematic representation
Fig. 2 is that the utility model torsion spring and limit switch are provided with key plan
Fig. 3 is for the utility model driving gear and reverse frame key plan is set
Fig. 4 is provided with key plan for the utility model limit switch
Fig. 5 is the utility model driving gear, reverse frame and torsion spring is provided with key plan
Fig. 6 is provided with key plan for boxboard, following boxboard and column on the utility model
Among the figure, 1. electric valve actuator, 2. limit switch, 3. torsion spring 4. reverses frame, and 5. driving gear is 6. gone up boxboard, 7. descends boxboard, 8. column.
Embodiment:
Top at electric valve actuator 1, be provided with boxboard 6 and following boxboard 7, fixedly connected by column between last boxboard and the following boxboard, driving gear 5 is installed in the clearance space between last boxboard and following boxboard and reverses frame 4, torsion spring 3 is installed reversing frame one side, on the following boxboard limit switch 2 is installed.
Working principle of the present utility model:
According to active force and reaction force principle; the down transmission of driven by motor driving gear one-level one-level; by T shape screw thread circular movement is converted to straight line motion at last; electric actuator can apply certain active force to load simultaneously; load just can be given equal and opposite in direction of final controlling element equally; direction opposite effect power; and the pressure pulling force is converted to torsion by T shape screw thread; torsion is by the transmission of driving gear, is delivered to the reversing on the frame of elasticity assembling, and reversing frame is to adopt torsion spring to clamp assembling; thereby reversing frame overcomes the resistance of torsion spring and rotates and come; and then pressing limit switch, the effect in protection final controlling element life-span is played in the final controlling element outage.When the final controlling element load reduces or eliminates, reverse frame and can be subjected to the torsion of torsion spring and go back to initial position, leave limit switch, and then the final controlling element energising works on.
The beneficial effects of the utility model
1, reliability height
Because the utility model adopts torsion spring to add the limit switch structure; therefore when final controlling element bears than the big load of final controlling element nominal ouput force; the limit switch of final controlling element will play a role, and this protection is a total travel, plays the effect of power-off protection final controlling element motor and component.
2, easy to use, cost is low, efficient is high
Because of the present utility model simple in structure, it is low to make assembly cost, fairly simple in the production assembly process, by the special tooling crimping, all the other Placements all adopt thread connecting mode, so easy installation and removal, are convenient to make produce keep in repair.
3, can regulate ouput force
Torsion spring can also be controlled the ouput force of final controlling element except the exertin protective function is arranged, the torsion spring of different size just has different ouput forces, therefore can satisfy different different requirements of customers.
Claims (1)
1. electric valve actuator torsion spring exertin protection mechanism; it is characterized in that: be provided with boxboard (6) and following boxboard (7) on the top of electric valve actuator (1); fixedly connected by column between last boxboard and the following boxboard; driving gear (5) is installed in the clearance space between last boxboard and following boxboard and reverses frame (4); torsion spring (3) is installed reversing frame one side, limit switch (2) is installed on the following boxboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201443780U CN202082460U (en) | 2011-05-09 | 2011-05-09 | Torsion spring excessive force protection mechanism for electric valve actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201443780U CN202082460U (en) | 2011-05-09 | 2011-05-09 | Torsion spring excessive force protection mechanism for electric valve actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202082460U true CN202082460U (en) | 2011-12-21 |
Family
ID=45343089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201443780U Expired - Fee Related CN202082460U (en) | 2011-05-09 | 2011-05-09 | Torsion spring excessive force protection mechanism for electric valve actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202082460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180045A (en) * | 2014-07-30 | 2014-12-03 | 绥中泰德尔自控设备有限公司 | Force limit protection mechanism applied to electric actuator and provided with springs, suspension and limit switches |
-
2011
- 2011-05-09 CN CN2011201443780U patent/CN202082460U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180045A (en) * | 2014-07-30 | 2014-12-03 | 绥中泰德尔自控设备有限公司 | Force limit protection mechanism applied to electric actuator and provided with springs, suspension and limit switches |
| CN104180045B (en) * | 2014-07-30 | 2018-12-25 | 绥中泰德尔自控设备有限公司 | A kind of Electric Actuator spring suspension and limit switch limiter protection mechanism |
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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: 20111221 Termination date: 20200509 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |