CN201028091Y - Exterior adjusting type torque limitation adjusting device - Google Patents
Exterior adjusting type torque limitation adjusting device Download PDFInfo
- Publication number
- CN201028091Y CN201028091Y CNU2007200664065U CN200720066406U CN201028091Y CN 201028091 Y CN201028091 Y CN 201028091Y CN U2007200664065 U CNU2007200664065 U CN U2007200664065U CN 200720066406 U CN200720066406 U CN 200720066406U CN 201028091 Y CN201028091 Y CN 201028091Y
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- China
- Prior art keywords
- nut
- guide bar
- guide rod
- handed thread
- spring
- 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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Abstract
The utility model provides an external adjusting type torque limitation adjusting device, which comprises a gripper, a left nut, a left spring, a left travel switch, a pushing bar, a guide bar, an adjusting bolt, a sliding block, a right spring, a right travel switch, a right nut, a pin and a sharp tuning knob, wherein, one end of the guide bar is provided with right-hand threads, and the other end of the guide bar is provided with left-hand threads; the right nut is provided with inner right-hand threads, and the left nut is provided with inner left-hand threads; the extended end of the guide bar is provided with a radial hole for inserting the pin; the sharp tuning knob is fixedly on the guide bar, and the other end of the guide bar is contacted with the gripper; gears of the sliding block and an inner gear volume are connected through multi-gear meshing. By using the device, the sharp tuning knob arranged outside of the primary electrical box is only turned rather than opening the primary electrical box, and the torque limitation of the actuating mechanism can be adjusted; thereby, the seal performance of the primary electrical box is ensured, and the operation is very convenient.
Description
Technical field
The utility model relates to part-turn electric actuator, particularly a kind of external regulation type moment restriction regulating device.
Background technique
Part-turn electric actuator is power with the ac power supply, accepts unified standard electric signal, exports 0-90 ° of corner displacement, handles controlling mechanisms such as air door plate washer in the industrial process control apparatus, butterfly valve, ball valve by connecting rod by output shaft again.For guaranteeing the safe operation of process control, thus unlatching in the corner displacement or closed position two-way to cross force moment protection be one of critical function of actuator.
The method that realizes force moment protection has multiple, utilizes that the rotation of ring gear is a kind of mode of using always in the planetary gear speed reducing mechanism.The existing moment restriction regulating device of this kind method that utilizes all is installed in the main electric box, connect together with electric master control unit, so the adjustment of moment restriction must be opened main electric box case, could adjust the position of its left and right nut repeatedly, influenced the sealing of main electric box, and adjusted also inconvenient.
Summary of the invention
The utility model will influence the sealing of main electric box when adjusting in order to solve existing apparatus, and adjusts inconvenient existing technical problem, is arranged separately in outside the main electric box and provide a kind of, and the moment restriction regulating device of vernier knob is arranged.
According to above-mentioned purpose, the utility model provides a kind of external regulation type moment restriction regulating device, comprise pressing plate, left nut, left spring, left lateral journey switch, push rod, guide rod, adjustment spiral shell lamp, slide block, right spring, right lateral journey switch, right nut, also have pin, vernier knob to form;
Wherein an end of guide rod has right-handed thread, and its other end has left-handed thread;
Wherein right nut is interior right-handed thread, and left nut is interior left-handed thread;
Wherein the end that stretches out of guide rod has radial hole, but the plug-in mounting pin vernier knob is fixedly mounted on the guide rod, its other end contacts with pressing plate
Said apparatus, wherein the gear of gear on the slide block and internal tooth volume is multiple tooth being connected with a joggle
The utility model has been owing to taked above technical measures, the adjustment of moment restriction, need not open main electric box, need only be rotatably installed in the outer vernier knob of case, both guaranteed the tightness of main electric box, operates very convenient again
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
It shown in the accompanying drawing external regulation type moment restriction regulating device of part-turn electric actuator in a kind of industrial processes automatic control system, it is arranged separately in outside the main electric box, comprise pressing plate 1, left nut 2, left spring 3, left lateral journey switch 4, push rod 5, guide rod 6, adjust screw 7, slide block 8, right spring 10, right lateral journey switch 11, right nut 12, also have pin 13 and vernier knob 14 to form, wherein an end of guide rod 6 has right-handed thread, and its other end has left-handed thread; Wherein right nut 10 is interior right-handed thread, and left nut 2 is interior left-handed thread; Wherein the end that stretches out of guide rod 6 has radial hole, but plug-in mounting pin 13 vernier knob 14 is fixedly mounted on the guide rod 6, its other end contacts with pressing plate 1; Wherein the gear on the slide block 8 is multiple tooth being connected with a joggle with the gear that is installed in the ring gear 9 of main electric box inferior planet reducing gear.
At first, rated load according to the type actuator, when the right nut 12 of left nut 2 that left-handed thread is installed and right-handed thread, left spring 3 and right spring 10 are compressed to certain-length, push rod 5 placed the neutral position and tighten that to adjust screw 7 fixing, the gear engagement on gear on the slide block 8 and the ring gear 9 is in place.
Then, actuator is applied load, its load value is for needing the moment values of restriction.Restart actuator, at this moment, ring gear 9 will produce in a small amount by the sense of rotation of actuator shaft and rotate, and drive slide block 8 and move axially in guide rod 6 upper edges, and the load of its amount of movement and actuator is relevant with the elastic force of left spring 3 or right spring 10.Adjust vernier knob 14, driving guide rod 6 by pin 13 rotates, but be installed in square left nut 2 and right nut 12 on the guide rod 6, its diagonal angle is stuck in the device case inwall that also is square and can not rotates, can only be each other move axially along guide rod 6 in the other direction, thereby cause that left spring 3 and right spring 10 loosen or compress.Observe push rod 5 simultaneously and just run into left lateral journey switch 4 or right lateral journey switch 11, then stop to adjust, the contact of position limit switch is moved and corresponding electric signal is sent to governor circuit, promptly adjusts the two-way moment values of crossing, and has realized the function of actuator's moment restriction.
Adjustment finishes, and need only screw pressing plate 1, makes it withstand guide rod 6, vernier knob 14 locked can not becoming flexible then, and operation is very easy.
Claims (2)
1. an external regulation type moment limits regulating device, comprise pressing plate (1), left nut (2), left spring (3), left lateral journey switch (4), push rod (5), guide rod (6), adjust screw (7), slide block (8), right spring (10), right lateral journey switch (11), right nut (12), it is characterized in that: also have pin (13), vernier knob (14) to form;
Wherein an end of guide rod (6) has right-handed thread, and its other end has left-handed thread;
Wherein right nut (10) is interior right-handed thread, and left nut (2) is interior left-handed thread;
Wherein the end that stretches out of guide rod (6) has radial hole, but plug-in mounting pin (13) vernier knob (14) is fixedly mounted on the guide rod (6), its other end contacts with pressing plate (1).
2. device according to claim 1 is characterized in that: wherein the gear of gear on the slide block (8) and ring gear (9) is multiple tooth being connected with a joggle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200664065U CN201028091Y (en) | 2007-01-18 | 2007-01-18 | Exterior adjusting type torque limitation adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200664065U CN201028091Y (en) | 2007-01-18 | 2007-01-18 | Exterior adjusting type torque limitation adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028091Y true CN201028091Y (en) | 2008-02-27 |
Family
ID=39132303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200664065U Expired - Fee Related CN201028091Y (en) | 2007-01-18 | 2007-01-18 | Exterior adjusting type torque limitation adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028091Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889411A (en) * | 2012-10-08 | 2013-01-23 | 天津市雄华电子仪表有限公司 | Moment control mechanism of electric actuator |
-
2007
- 2007-01-18 CN CNU2007200664065U patent/CN201028091Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889411A (en) * | 2012-10-08 | 2013-01-23 | 天津市雄华电子仪表有限公司 | Moment control mechanism of electric actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20100220 |