CN108167509A - A kind of cable wire drive-type pneumatic actuator - Google Patents
A kind of cable wire drive-type pneumatic actuator Download PDFInfo
- Publication number
- CN108167509A CN108167509A CN201810144277.XA CN201810144277A CN108167509A CN 108167509 A CN108167509 A CN 108167509A CN 201810144277 A CN201810144277 A CN 201810144277A CN 108167509 A CN108167509 A CN 108167509A
- Authority
- CN
- China
- Prior art keywords
- cable wire
- spring
- driving pulley
- type pneumatic
- tightwire
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The invention belongs to pneumatic actuator technical fields, disclose a kind of cable wire drive-type pneumatic actuator, including driving mechanism, piston type pneumatic mechanism and spring return mechanism, driving mechanism babinet, case lid and driving pulley, cable wire and back tightwire before connecting on driving pulley；Piston type pneumatic mechanism includes front end housing, cylinder barrel and the back cylinder cover and piston that are fixedly connected, and piston is connected by preceding cable traction bar with the front end of preceding cable wire；Spring return mechanism includes the spring strut protecgulum, spring strut and the spring strut rear cover that are fixedly connected and compressed spring and spring base, spring base is connected by back tightwire draw bar with the rear end of back tightwire, pulling motion process of the present invention is entirely rolling friction, it avoids traditional piston actuator and the output torque loss brought in rotary motion is converted in linear motion, make motion process more steady, valve driving for angle stroke provides the output torque with linear characteristic, meets the more stable control requirement needed for valve.
Description
Technical field
The present invention relates to a kind of pneumatic actuators, specifically a kind of that there is linear convergent rate torque characteristics, action to put down
Surely, the smaller cable wire drive-type pneumatic actuator of duty, belongs to pneumatic actuator technical field.
Background technology
Angular travel valve (such as ball valve, butterfly valve) is that very extensive valve is selected in Process Control System and chemical plant installations
Type.In the existing executing agency matched, the choosing most when being required often as large torque of Pneumatic piston executing agency
.In traditional Pneumatic piston executing agency, generally using curved arm rod or slide block structure of cranking arm, provided as by piston
Linear motion be converted to the major way of the rotary motion cranked arm.
Traditional curved arm rod or slide block structure of cranking arm since the component angle of thrust constantly changes during exercise, make work
Constantly change in total travel used in the component value for cranking arm tangential, output torque characteristic is finally made to take the shape of the letter U distribution, i.e. mid-ranges
Output torque is relatively small, also just influences control requirement of the angular travel valve in process control in this way, and often by defeated
Go out the limitation of torque characteristics stage casing minimum value, when type selecting must take into consideration the model of larger specification to meet the driving requirement of valve.
During linear motion is converted to rotary motion, traditional curved arm rod or slide block structure action part of cranking arm
Between all there are sliding frictions.Due to the influence of sliding friction, make output torque not steady enough, so as to cause the steady of valve event
Qualitative deficiency；Meanwhile need to overcome certain stiction in action launching, generate torque output sluggish, reaction is inadequate
It is sensitive, it is unfavorable for the quick response of valve event, in type selecting with certain limitation.
Invention content
It is an object of the present invention to overcome the above deficiencies, has linear convergent rate torque characteristics so as to provide one kind, moves
Work is steady, is quick on the draw, the smaller cable wire drive-type pneumatic actuator of duty, can meet large torque output, action stability
With the valve driving demand that response speed requirement is high, duty requires stringenter occasion.Since it has stable torque output,
Under the requirements of type selecting of same torque requirement, lower specifications and models are selected than traditional piston actuator, are reduced
Duty and gas consumption, so as to improve economic benefit.
According to technical solution provided by the invention, the cable wire drive-type pneumatic actuator, including driving mechanism, piston
Formula pneumatic mechanism and spring return mechanism,
The driving mechanism babinet, case lid and driving pulley, the babinet is interior to be equipped with lower bearing, and upper bearing (metal), institute are equipped in case lid
The upper and lower side for stating driving pulley is separately mounted in the inner ring of upper bearing (metal) and lower bearing, and preceding cable wire and rear steel are connected on driving pulley
Rope；
The piston type pneumatic mechanism includes the front end housing, cylinder barrel and the back cylinder cover that are fixedly connected, before the back cylinder cover and babinet
End is connected, and piston is equipped in cylinder barrel, and piston is connected by preceding cable traction bar with the front end of preceding cable wire；
The spring return mechanism includes the spring strut protecgulum, spring strut and the spring strut rear cover that are fixedly connected, before the spring strut
Lid is connected with the rear end of babinet, and spring base, the rear end phase that spring base passes through back tightwire draw bar and back tightwire are equipped in spring strut
Even, compressed spring is equipped between spring strut protecgulum and spring base.
Further, the both sides of the babinet are equipped with to make forward and backward mechanical position limitation to the rotary motion of driving pulley
Front limit bolt and rear caging bolt, and can by adjusting the screw-in depth of the front limit bolt and rear caging bolt,
Adjust the angular range of driving pulley rotary motion.
Further, the outside of the driving pulley is equipped with the upper U-lag in top-bottom layout and lower U-lag；The preceding steel
Rope is twined in the lower U-lag on the outside of driving pulley, and the rear end of preceding cable wire is fixed on driving pulley；The back tightwire is twined in driving
In upper U-lag on the outside of pulley, the front end of back tightwire is fixed on driving pulley.
Further, the front end of the preceding cable traction bar is connected with piston；The preceding cable wire passes through preceding cable traction bar,
And it is mutually fixed with the front end of preceding cable traction bar.
Further, cable wire guide holder is equipped between the babinet and back cylinder cover, preceding cable wire pilot bushing is mounted on preceding steel
On rope guide holder；The preceding cable traction bar is connected across preceding cable wire pilot bushing with piston.
Further, the rear end of the back tightwire draw bar connects with spring base；The back tightwire is drawn across back tightwire
Bar, and mutually fixed with the rear end of back tightwire draw bar.
Further, back tightwire guide holder, the installation of back tightwire pilot bushing are equipped between the babinet and spring strut protecgulum
On back tightwire guide holder；The back tightwire draw bar connects across back tightwire pilot bushing with spring base.
Further, the upper bearing (metal) and lower bearing use standard rolling bearing.
Compared with the prior art the present invention has following technique effect：
Preceding cable wire and the mutual straight line pulling motion of back tightwire drive driving pulley to rotate, and preceding cable wire and back tightwire are led
Gravitation is tangentially acted on driving pulley, directly forms corresponding torque, and torque arm length is made to remain constant, is achieved in linear
Torque output characteristics；
Preceding cable wire and back tightwire make rolling friction in two U-lags of driving pulley, effectively reduce because of frictional influence to output
The loss of torque effectively increases the stationarity of transfer efficiency and output torque, so as to make the control of the valve of driving more stable
Reliably；
With linear torque output characteristics, without traditional air rammer driven using curved arm rod or slide block structure of cranking arm
The intrinsic mid-ranges output torque of formula executing agency is substantially reduced problem, can be with when valve makees executing agency's type selecting
Smaller specifications and models are selected, effectively reduce the cost of valve complete machine, reduce the duty of valve complete machine in a device, so as to improve
Economic benefit；
Running part is not influenced by stiction, sensitiveer fast to the response for inputting air source signal, is turned round in particular for big
During the valve selection of square driving, can meet the needs of fast reaction simultaneously；
Due to avoiding the influence of sliding friction in driving mechanism, the frictional dissipation of moving parts is small, and moving parts are few, makes
Product working life is longer, and maintenance cost is lower；
Cover structure is installed using top, installation is simple, easy to maintain.
Description of the drawings
Fig. 1 is axis geodesic structure schematic diagram of the present invention.
Fig. 2 is box portion sectional view of the present invention.
Fig. 3 is driving pulley structure diagram of the present invention.
Fig. 4 and Fig. 5 moves schematic diagram for driving pulley of the present invention.
Reference sign：Before 1- babinets, 2- case lids, 3- driving pulleys, 4- upper bearing (metal)s, 5- back tightwires, 6- after cable wire, 7-
Cable wire locking nut before caging bolt, 8- back tightwires locking nut, 9-, 10- front limits bolt, 11- back cylinder covers, 12- cylinder barrels,
Cable wire pilot bushing, 18- spring struts before cable wire guide holder, 17- before cable traction bar, 16- before 13- pistons, 14 front end housings, 15-
Protecgulum, 19- spring struts, 20- compressed springs, 21- spring bases, 22- spring struts rear cover, 23- back tightwires guide holder, 24- back tightwires
U-lag, the upper U-lags of 28- under draw bar, 25- back tightwires pilot bushing, 26- lower bearings, 27-.
Specific embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in Figs. 1-3：Cable wire drive-type pneumatic actuator, mainly includes：By babinet 1, case lid 2, driving pulley 3,
Upper bearing (metal) 4, lower bearing 26, preceding cable wire 6, back tightwire 5, front limit bolt 10, rear caging bolt 7, preceding cable wire locking nut 8, after
The driving mechanism that cable wire locking nut 9 forms；By front end housing 14, back cylinder cover 11, cylinder barrel 12, piston 13, preceding cable traction bar 15,
The piston type pneumatic mechanism of preceding cable wire guide holder 16, preceding cable wire pilot bushing 17 composition；By spring strut protecgulum 18, spring strut rear cover
22nd, spring strut 19, compressed spring 20, spring base 21, back tightwire guide holder 23, back tightwire draw bar 24, back tightwire pilot bushing
The spring return mechanism of 25 compositions.
As shown in Figs. 1-3, babinet 1 is fixed with 2 bolt of case lid, and lower bearing 26 is equipped in babinet 1, upper axis is equipped in case lid 2
4 are held, the upper and lower side of driving pulley 3 is separately mounted to upper bearing (metal) 4 and in the inner ring of lower bearing 26,3 both ends of driving pulley connect respectively
Cable wire 6 and back tightwire 5 before connecing.Upper bearing (metal) 4 and lower bearing 26 all use standard rolling bearing.
As shown in Figure 1, one end of babinet 1 is connect with back cylinder cover 14, back cylinder cover 14 passes through bolt with cylinder barrel 12, front end housing 11
It is fixed, piston 13 is equipped in cylinder barrel 12, as pneumatic actuation part.Before piston 13 is by preceding cable traction bar 15 and preceding cable wire 6
End is connected, and cable wire 6 does reciprocating linear motion simultaneously before realizing the linear reciprocating motion traction of piston 13.
The other end of babinet 1 is connect with spring strut protecgulum 18, and spring strut protecgulum 18 is welded with spring strut 19, spring strut rear cover 22
It is connected into integral type.Spring base 21 is equipped in spring strut 19, compressed spring 20, bullet are equipped between spring strut protecgulum 18 and spring base 21
Spring abutment 21 is connected by back tightwire draw bar 24 with 5 rear end of back tightwire, is realized and is driven spring by the stretching motion of compressed spring 20
Seat 21 does reciprocating linear motion, then draw back tightwire 5 while do reciprocating linear motion.
Piston 13 is connect with preceding 15 front end of cable traction bar；Preceding cable wire 6 passes through preceding cable traction bar 15, and is led with preceding cable wire
The front end for drawing bar 15 is fixed.Preceding cable wire guide holder 16 is fixed between babinet 1 and back cylinder cover 11, and preceding cable wire pilot bushing 17 is installed
On preceding cable wire guide holder 16；Preceding cable traction bar 15 is passed through out of preceding cable wire pilot bushing 17, is transported for preceding cable traction bar 15
It is dynamic that guiding role is provided.
Spring base 21 is connect with 24 rear end of back tightwire draw bar；Back tightwire 5 passes through back tightwire draw bar 24, and and back tightwire
The rear end of draw bar 24 is fixed.Back tightwire guide holder 23 is fixed between babinet 1 and spring strut protecgulum 18, back tightwire pilot bushing
25 are mounted on back tightwire guide holder 23；Back tightwire draw bar 24 is passed through out of back tightwire pilot bushing 23, is drawn for back tightwire
The movement of bar 24 provides guiding role.
As shown in Fig. 1,4,5,1 both sides of babinet are equipped with adjustable front limit bolt 10 and rear caging bolt 7, can be right respectively
Forward and backward mechanical position limitation is made in the rotary motion of driving pulley 3, and can be by adjusting the front limit bolt 10 and rear caging bolt 7
Screw-in depth, adjust 3 rotary motion of driving pulley angular range.
As shown in Figs. 1-3, the outside of driving pulley 3 is equipped with the upper U-lag 28 in top-bottom layout and lower U-lag 27.Preceding steel
Rope 6 is twined in the lower U-lag 27 in 3 outside of driving pulley, and rear end is fixed with driving pulley 3 using preceding cable wire locking nut 8.Steel afterwards
Rope 5 is twined in the upper U-lag 28 in 3 outside of driving pulley, and front end is fixed with driving pulley 3 using back tightwire locking nut 9.
As shown in Fig. 1,4, preceding cable wire 6 drives driving pulley 3 to be rotated in the counterclockwise direction, revolves from piston 13 to front haulage
The extreme position turned is limited by the top of front limit bolt 10.
As shown in Figure 1,5, back tightwire 5 from compressed spring 20 with flexible spring seat 21 to rear haulage, drive driving pulley 3 along suitable
Clockwise rotates, and the extreme position of rotation is limited by the top of rear caging bolt 7.
Claims (8)
1. cable wire drive-type pneumatic actuator, including driving mechanism, piston type pneumatic mechanism and spring return mechanism, feature
It is,
The driving mechanism babinet（1）, case lid（2）And driving pulley（3）, the babinet（1）It is interior to be equipped with lower bearing（26）, case lid
（2）It is interior to be equipped with upper bearing (metal)（4）, the driving pulley（3）Upper and lower side be separately mounted to upper bearing (metal)（4）With lower bearing（26）It is interior
In circle, driving pulley（3）Cable wire before upper connection（6）And back tightwire（5）；
The piston type pneumatic mechanism includes the front end housing being fixedly connected（14）, cylinder barrel（12）And back cylinder cover（11）, the rear cylinder
Lid（11）With babinet（1）Front end be connected, cylinder barrel（12）It is interior to be equipped with piston（13）, piston（13）Pass through preceding cable traction bar（15）
With preceding cable wire（6）Front end be connected；
The spring return mechanism includes the spring strut protecgulum being fixedly connected（18）, spring strut（19）With spring strut rear cover（22）,
The spring strut protecgulum（18）With babinet（1）Rear end be connected, spring strut（19）It is interior to be equipped with spring base（21）, spring base（21）It is logical
Later cable traction bar（24）With back tightwire（5）Rear end be connected, spring strut protecgulum（18）With spring base（21）Between be equipped with pressure
Contracting spring（20）.
2. cable wire drive-type pneumatic actuator as described in claim 1, which is characterized in that the babinet（1）Both sides set
It is useful for driving pulley（3）Rotary motion make the front limit bolt of forward and backward mechanical position limitation（10）With rear caging bolt（7）,
It and can be by adjusting the front limit bolt（10）With rear caging bolt（7）Screw-in depth, adjust driving pulley（3）Rotation
The dynamic angular range of transhipment.
3. cable wire drive-type pneumatic actuator as described in claim 1, which is characterized in that the driving pulley（3）It is outer
Side is equipped with the upper U-lag in top-bottom layout（28）With lower U-lag（27）；The preceding cable wire（6）It twines in driving pulley（3）Outside
Lower U-lag（27）It is interior, preceding cable wire（6）Rear end be fixed on driving pulley（3）On；The back tightwire（5）It twines in driving pulley（3）
The upper U-lag in outside（28）It is interior, back tightwire（5）Front end be fixed on driving pulley（3）On.
4. cable wire drive-type pneumatic actuator as described in claim 1, which is characterized in that the preceding cable traction bar（15）
Front end and piston（13）It is connected；The preceding cable wire（6）Across preceding cable traction bar（15）, and with preceding cable traction bar（15）'s
Front end is mutually fixed.
5. cable wire drive-type pneumatic actuator as described in claim 1, which is characterized in that the babinet（1）And back cylinder cover
（11）Between be equipped with cable wire guide holder（16）, preceding cable wire pilot bushing（17）Mounted on preceding cable wire guide holder（16）On；Before described
Cable traction bar（15）Across preceding cable wire pilot bushing（17）With piston（13）It is connected.
6. cable wire drive-type pneumatic actuator as described in claim 1, which is characterized in that the back tightwire draw bar（24）
Rear end and spring base（21）Connect；The back tightwire（5）Across back tightwire draw bar（24）, and with back tightwire draw bar（24）
Rear end mutually fix.
7. cable wire drive-type pneumatic actuator as described in claim 1, which is characterized in that the babinet（1）And spring strut
Protecgulum（18）Between be equipped with back tightwire guide holder（23）, back tightwire pilot bushing（25）Mounted on back tightwire guide holder（23）On；
The back tightwire draw bar（24）Across back tightwire pilot bushing（23）With spring base（21）Connect.
8. cable wire drive-type pneumatic actuator as described in claim 1, which is characterized in that the upper bearing (metal)（4）And lower axle
It holds（26）Use standard rolling bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144277.XA CN108167509A (en) | 2018-02-12 | 2018-02-12 | A kind of cable wire drive-type pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144277.XA CN108167509A (en) | 2018-02-12 | 2018-02-12 | A kind of cable wire drive-type pneumatic actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108167509A true CN108167509A (en) | 2018-06-15 |
Family
ID=62512434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810144277.XA Pending CN108167509A (en) | 2018-02-12 | 2018-02-12 | A kind of cable wire drive-type pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007420A (en) * | 2021-04-06 | 2021-06-22 | 扬州市扬修电力设备有限公司 | Linear transmission device of valve actuator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2609665A1 (en) * | 1975-04-04 | 1976-10-21 | Hydraudyne Bv | HYDRAULIC TRAIN CYLINDER |
| US5694960A (en) * | 1996-11-05 | 1997-12-09 | Turk; Edward J. | Hazardous gas protection system and method for automatic valve closure |
| CN1456831A (en) * | 2002-05-10 | 2003-11-19 | 株式会社巴技术研究所 | Rotary angle limiting mechanism of rotary valve and regulator therewith |
| CN201568580U (en) * | 2009-11-30 | 2010-09-01 | 蔡忠 | Intelligent type special rapid cut-off valve for gas |
| US20170122416A1 (en) * | 2015-11-03 | 2017-05-04 | Emerson Process Management, Valve Automation, Inc. | Rotary actuators with chain operated cams |
| CN208185582U (en) * | 2018-02-12 | 2018-12-04 | 无锡智能自控工程股份有限公司 | A kind of cable wire drive-type pneumatic actuator |
-
2018
- 2018-02-12 CN CN201810144277.XA patent/CN108167509A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2609665A1 (en) * | 1975-04-04 | 1976-10-21 | Hydraudyne Bv | HYDRAULIC TRAIN CYLINDER |
| US5694960A (en) * | 1996-11-05 | 1997-12-09 | Turk; Edward J. | Hazardous gas protection system and method for automatic valve closure |
| CN1456831A (en) * | 2002-05-10 | 2003-11-19 | 株式会社巴技术研究所 | Rotary angle limiting mechanism of rotary valve and regulator therewith |
| CN201568580U (en) * | 2009-11-30 | 2010-09-01 | 蔡忠 | Intelligent type special rapid cut-off valve for gas |
| US20170122416A1 (en) * | 2015-11-03 | 2017-05-04 | Emerson Process Management, Valve Automation, Inc. | Rotary actuators with chain operated cams |
| CN208185582U (en) * | 2018-02-12 | 2018-12-04 | 无锡智能自控工程股份有限公司 | A kind of cable wire drive-type pneumatic actuator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007420A (en) * | 2021-04-06 | 2021-06-22 | 扬州市扬修电力设备有限公司 | Linear transmission device of valve actuator |
| CN113007420B (en) * | 2021-04-06 | 2023-06-30 | 扬州市扬修电力设备有限公司 | Linear transmission device of valve actuator |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180615 |
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| RJ01 | Rejection of invention patent application after publication |