CN203627993U - Buffering large-torque spring restoration executing mechanism - Google Patents
Buffering large-torque spring restoration executing mechanism Download PDFInfo
- Publication number
- CN203627993U CN203627993U CN201320779014.9U CN201320779014U CN203627993U CN 203627993 U CN203627993 U CN 203627993U CN 201320779014 U CN201320779014 U CN 201320779014U CN 203627993 U CN203627993 U CN 203627993U
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- air chamber
- piston rod
- bolted
- torque spring
- buffering
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Abstract
The utility model relates to a pneumatic executing mechanism, in particular to a large-torque spring restoration type pneumatic executing mechanism with a final position air buffering structure, and belongs to the technical field of pneumatic executing mechanisms. The executing mechanism comprises a cylinder body; a left cylinder cover pressing plate is connected to the outer side of a left cylinder cover by a bolt; a guide sleeve is arranged in the cylinder body; the guide sleeve is pressed on the left cylinder cover by the left cylinder cover pressing plate; the right side of the right cylinder cover is connected with a switching box by a bolt; the rear end of the switching box is connected with a buffering air chamber; the rear end of the buffering air chamber is connected to a buffering air chamber rear cylinder cover which is connected with a buffering seat by a bolt; a buffering plunger is mounted in the buffering seat in a sliding way. According to the executing mechanism, the requirement of valve drive with frequent actions can be met, the internal components and parts damage of the executing mechanism caused by the frequent actions can be effectively avoided, the overhaul efficiency is reduced, and economic benefits are improved.
Description
Technical field
The utility model relates to a kind of pneumatic actuator, and a kind of high pulling torque spring reset type, with the pneumatic actuator of final position gas buffer structure, belongs to pneumatic actuator technical field specifically.
Background technique
Industrial automation is just produced at fast fetching for traditional industry production model, becomes to promote productivity, reduce the main force of labor strength.Along with production-scale Rapid Expansion, the specification of control valve and control accuracy have become the key factor of restriction industrial automation process.The control valve of small dimension is the unappeasable production capacity demand of expansion day by day, and main manifestations shows that Design Mode that actuator's structure of the control valve for driving can not be amplified by equal proportion completely meets the drive unit of large specifications control valve.Common pneumatic pinion and-rack actuator, air bladder formula angle stroke actuators, Pneumatic piston angle stroke actuators have a wide range of applications on the rotation such as butterfly valve, ball valve class valve, but these actuators are often because of the restriction of its structure and processing conditions, can not meet the valve demand for frequent movement, in the process of frequent movement, easily damage internal component, even cause valve catastrophe failure, to such an extent as to whole device is forced to parking maintenance, bring larger economic loss to client.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby provide a kind of buffering type high pulling torque spring return actuator, can meet the demand of the valve driving of frequent movement, can effectively avoid the actuator's damage of internal device causing because of frequent movement, thereby reduction repair rate, increases economic efficiency.
The technological scheme providing according to the utility model, buffering type high pulling torque spring return actuator comprises cylinder body, left cylinder cap and right cylinder cap are welded respectively in cylinder body two ends, in cylinder body, be provided with the return piston that can horizontally slip, between return piston and left cylinder cap, be provided with the Returnning spring that compresses return piston, it is characterized in that: left cylinder cap outside is bolted left cylinder cap pressing plate, is provided with guide sleeve in cylinder body, and guide sleeve is pressed on left cylinder cap by left cylinder cap pressing plate.
Right cylinder cap right side is bolted conversion casing, and conversion casing upper end is bolted conversion case lid, and conversion case lid center is bolted end cap; In end cap, be provided with upper bearing (metal), conversion casing bottom centre is provided with lower bearing, and the crank top rolling that is arranged on conversion casing center is arranged on upper bearing (metal) inner ring, rolls and be arranged on lower bearing inner ring in crank bottom; Be respectively equipped with up and down upper hopper chute and gliding groove at crank, top slide block is slidably installed in upper hopper chute, the bottom slide block that is slidably installed in gliding groove, is provided with position restoring piston rod between top slide block and bottom slide block, top slide block, bottom slide block and position restoring piston rod are linked into an integrated entity and realized synchronous slide by bearing pin.
Conversion box back connects buffer air chamber body, and buffer air chamber body rear end connects buffer air chamber back cylinder cover, on buffer air chamber back cylinder cover, is bolted buffing pad, and buffer plunger is slidably installed in buffing pad.
Position restoring piston rod front end is provided with position restoring piston rod front portion, position restoring piston rod front portion puts in the bearing being arranged in guide sleeve, position restoring piston rod rear end is provided with position restoring piston rod rear portion, and position restoring piston rod rear portion puts in buffer air chamber body and links into an integrated entity with buffer plunger.
Further, on return piston, be provided with guidance tape with cylinder body connecting surface.
Further, be threaded connection spacing screw mandrel in guide sleeve, spacing screw mandrel left end stretches out left cylinder cap and is threaded connection screw mandrel sheath.
Further, crank top is stretched out end cap and is bolted pointer cover plate, and pointer cover plate is provided with stroke board.
Further, bearing outside is provided with the bearing plate being bolted in guide sleeve outer end.
Further, buffer air chamber back cylinder cover is provided with back cylinder cover air source hole.
Further, buffing pad is provided with buffing pad air source hole.
Compared with the prior art the utility model has the following advantages:
1. described in, buffering type high pulling torque spring return actuator relies on to increase in spring one side and overcomes acting force of the spring and reach cushioning effect, opposite side is to rely on the gas buffer structure of actuator self to realize cushioning effect, does not need to carry out other any annexes and is equipped with and controls.
2. Returnning spring module can realize the valve demand for control that meets plurality of specifications compared with the moment output of high pulling torque.
3. can realize the debugging demand of multiple cushioning effect by adjusting the size of back cylinder cover air source hole.
4. the design of buffer plunger and buffing pad, with respect to the buffer structure of other external-addeds, meets product specification demand more in its function, is just produced into originally and says, increases few compared with plain edition actuator.
5. buffering type high pulling torque spring return actuator is as the valve positioner of frequent movement, can extend the working life of actuator self, also can reduce the excessive abrasion that valve sealing face causes because of frequent contact simultaneously, extend the working life of whole valve, be reached for client and reduce costs, increase the final purpose of mixed economy profit.
Accompanying drawing explanation
Fig. 1 is the utility model plan view.
Fig. 2 is the utility model plan view.
Description of reference numerals: 1-screw mandrel sheath, the left cylinder cap pressing plate of 2-, the left cylinder cap of 3-, 4-Returnning spring, 5-cylinder body, 6-bearing, 7-bearing plate, 8-position restoring piston rod front portion, 9-return piston, the right cylinder cap of 10-, the spacing screw mandrel of 11-, 12-guide sleeve, 13-guidance tape, 14-changes casing, 15 conversion case lids, 16-end cap, 17-stroke board, 18-pointer cover plate, 19-crank, 20-top slide block, 21-bottom slide block, 22-upper hopper chute, 23-gliding groove, 24-upper bearing (metal), 25-lower bearing, 26-bearing pin, 27-position restoring piston rod, 28-position restoring piston rod rear portion, 29-buffer air chamber body, 30-buffer plunger, 31-buffer air chamber back cylinder cover, 32-buffing pad, 33-back cylinder cover air source hole, 34-buffing pad air source hole.
Embodiment
The utility model is further described in connection with the embodiment in accompanying drawing below:
As shown in Figure 1 and 2, the utility model mainly comprises cylinder body 5, and left cylinder cap 3 and right cylinder cap 10 are welded respectively in cylinder body 5 two ends, is provided with the return piston 9 that can horizontally slip in cylinder body 5, is provided with the Returnning spring 4 that compresses return piston 9 between return piston 9 and left cylinder cap 3.On return piston 9, be provided with guidance tape 13 with cylinder body 5 connecting surfaces, guidance tape 13 plays leading role to return piston 9.
Right cylinder cap 10 right sides are bolted conversion casing 14, and conversion casing 14 upper ends are bolted conversion case lid 15, and conversion case lid 15 centers are bolted end cap 16.In end cap 16, be provided with upper bearing (metal) 24, conversion casing 14 bottom centre are provided with lower bearing 25, and the crank 18 tops rollings that are arranged on conversion casing 14 centers are arranged on upper bearing (metal) 24 inner rings, roll and be arranged on lower bearing 25 inner rings in crank 18 bottoms.Crank 18 tops are stretched out end cap 16 and are bolted pointer cover plate 18.Pointer cover plate 18 is provided with stroke board 17.
Be respectively equipped with up and down upper hopper chute 22 and gliding groove 23 at crank 18, top slide block 20 is slidably installed in upper hopper chute 22, bottom slide block 21 is slidably installed in gliding groove 23, between top slide block 20 and bottom slide block 21, be provided with position restoring piston rod 27, top slide block 20, bottom slide block 21 and position restoring piston rod 27 are linked into an integrated entity and are realized synchronous slide by bearing pin 26.
Conversion casing 14 rear ends connect buffer air chamber body 29, and buffer air chamber body 29 rear ends connect buffer air chamber back cylinder cover 31, are bolted buffing pad 32 on buffer air chamber back cylinder cover 31, and buffer plunger 30 is slidably installed in buffing pad 32.
Position restoring piston rod 27 front ends are provided with position restoring piston rod front portion 8, and position restoring piston rod front portion 8 puts in the bearing 6 being arranged in guide sleeve 12, and bearing 6 outsides are provided with the bearing plate 7 being bolted in guide sleeve 12 outer ends.Position restoring piston rod 27 rear ends are provided with position restoring piston rod rear portion 28, and position restoring piston rod rear portion 28 puts in buffer air chamber body 29 and links into an integrated entity with buffer plunger 30.
Described buffer air chamber back cylinder cover 31 is provided with back cylinder cover air source hole 33, and buffing pad 32 is provided with buffing pad air source hole 34, back cylinder cover air source hole 33 and 34 air inlets simultaneously of buffing pad air source hole, exhaust simultaneously.When air inlet, owing to there being a cushion stroke between buffer plunger 30 and buffing pad 32, so back cylinder cover air source hole 33 can only be to the left side air chamber air inlet of buffer air chamber, and buffing pad air source hole 34 can only be given the right side air chamber air inlet of the buffer air chamber that buffer plunger 30 and buffing pad 32 form.After cushion stroke finishes, the left side air chamber of buffer air chamber becomes an air chamber after being communicated with the right side air chamber of buffer air chamber, and back cylinder cover air source hole 33 and buffing pad air source hole 34 are simultaneously to this air chamber air inlet.
Return piston 9 is because the left side air chamber of buffer air chamber and the right side air chamber of buffer air chamber become an air chamber after being communicated with, internal pressure is reduced to cannot overcome acting force of the spring time, starting to react on position restoring piston rod 27 moves to opposite side, making to bring about the desired sensation becomes an air chamber space and diminishes to buffer plunger 30 and contact completely with buffing pad 32 after the left side air chamber of buffer air chamber and the right side air chamber of buffer air chamber are communicated with, again form two air chambers.Now less owing to having changed the size of suction port of left side air chamber of buffer air chamber, reach and changed the effect that exhaust delays, can realize pooling feature.
Claims (7)
1. a buffering type high pulling torque spring return actuator, comprise cylinder body (5), left cylinder cap (3) and right cylinder cap (10) are welded respectively in cylinder body (5) two ends, in cylinder body (5), be provided with the return piston (9) that can horizontally slip, between return piston (9) and left cylinder cap (3), be provided with the Returnning spring (4) that compresses return piston (9), it is characterized in that: left cylinder cap (3) outside is bolted left cylinder cap pressing plate (2), in cylinder body (5), be provided with guide sleeve (12), guide sleeve (12) is pressed on left cylinder cap (3) by left cylinder cap pressing plate (2),
Right cylinder cap (10) right side is bolted conversion casing (14), and conversion casing (14) upper end is bolted conversion case lid (15), and conversion case lid (15) center is bolted end cap (16); In end cap (16), be provided with upper bearing (metal) (24), conversion casing (14) bottom centre is provided with lower bearing (25), crank (18) the top rolling that is arranged on conversion casing (14) center is arranged on upper bearing (metal) (24) inner ring, rolls and be arranged on lower bearing (25) inner ring in crank (18) bottom; Be respectively equipped with up and down upper hopper chute (22) and gliding groove (23) at crank (18), top slide block (20) is slidably installed in upper hopper chute (22), bottom slide block (21) is slidably installed in gliding groove (23), between top slide block (20) and bottom slide block (21), be provided with position restoring piston rod (27), top slide block (20), bottom slide block (21) and position restoring piston rod (27) are linked into an integrated entity and are realized synchronous slide by bearing pin (26);
Conversion casing (14) rear end connects buffer air chamber body (29), buffer air chamber body (29) rear end connects buffer air chamber back cylinder cover (31), on buffer air chamber back cylinder cover (31), be bolted buffing pad (32), buffer plunger (30) is slidably installed in buffing pad (32);
Position restoring piston rod (27) front end is provided with position restoring piston rod front portion (8), position restoring piston rod front portion (8) puts in the bearing (6) being arranged in guide sleeve (12), position restoring piston rod (27) rear end is provided with position restoring piston rod rear portion (28), and position restoring piston rod rear portion (28) puts in buffer air chamber body (29) and links into an integrated entity with buffer plunger (30).
2. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: at return piston (9), upper and cylinder body (5) connecting surface is provided with guidance tape (13).
3. buffering type high pulling torque spring return actuator as claimed in claim 1, it is characterized in that: in described guide sleeve (12), be threaded connection spacing screw mandrel (11), spacing screw mandrel (11) left end stretches out left cylinder cap (3) and is threaded connection screw mandrel sheath (1).
4. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described crank (18) top is stretched out end cap (16) and is bolted pointer cover plate (18), and pointer cover plate (18) is provided with stroke board (17).
5. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described bearing (6) outside is provided with the bearing plate (7) being bolted in guide sleeve (12) outer end.
6. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described buffer air chamber back cylinder cover (31) is provided with back cylinder cover air source hole (33).
7. buffering type high pulling torque spring return actuator as claimed in claim 1, is characterized in that: described buffing pad (32) is provided with buffing pad air source hole (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320779014.9U CN203627993U (en) | 2013-11-30 | 2013-11-30 | Buffering large-torque spring restoration executing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320779014.9U CN203627993U (en) | 2013-11-30 | 2013-11-30 | Buffering large-torque spring restoration executing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203627993U true CN203627993U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320779014.9U Withdrawn - After Issue CN203627993U (en) | 2013-11-30 | 2013-11-30 | Buffering large-torque spring restoration executing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203627993U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672123A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Buffer type large-torque spring restoration executing mechanism |
-
2013
- 2013-11-30 CN CN201320779014.9U patent/CN203627993U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672123A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Buffer type large-torque spring restoration executing mechanism |
| CN103672123B (en) * | 2013-11-30 | 2016-03-16 | 无锡智能自控工程股份有限公司 | Buffering type high pulling torque spring return actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20160316 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |