CN103104741A - Pneumatic thin film performing mechanism with built-in type anti-rotating device - Google Patents
Pneumatic thin film performing mechanism with built-in type anti-rotating device Download PDFInfo
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- CN103104741A CN103104741A CN2013100451548A CN201310045154A CN103104741A CN 103104741 A CN103104741 A CN 103104741A CN 2013100451548 A CN2013100451548 A CN 2013100451548A CN 201310045154 A CN201310045154 A CN 201310045154A CN 103104741 A CN103104741 A CN 103104741A
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Abstract
The invention discloses a pneumatic thin film performing mechanism with a built-in type anti-rotating device. The performing mechanism comprises a film cover component, a membrane, a tray, an elastic element and a push bar, wherein the membrane is fixed on the inner side of the film cover component, the tray is fixed on membrane, two ends of the elastic element are respectively connected with the film cover component and the tray, one end of the push bar is fixed on the tray, and the other end of the push bar penetrates through the film cover component and is exposed outside the film cover component. The pneumatic thin film performing mechanism is further provided with the built-in type anti-rotating device. The film cover component comprises an upper film cover, a connecting pipe and a lower film cover, wherein the upper film cover, the connecting pipe and the lower film cover are sequentially connected, and an anti-rotating guide component used for limiting a moving track of the built-in type anti-rotating device is arranged on the inner side of the connecting pipe. One end of the built-in type anti-rotating device is fixedly connected to the tray, and the other end of the built-in type anti-rotating device is connected with the anti-rotating guide component. The built-in type anti-rotating device can move along a track limited by the anti-rotating guide component. The built-in type anti-rotating device is arranged in the pneumatic thin film performing mechanism, not only is travel of the pneumatic thin film performing mechanism not affected, but also the push bar can be prevented from rotating.
Description
Technical field
The present invention relates to the pneumatic control valve field, particularly a kind of pneumatic diaphragn actuating mechanism with built-in anti-rotation device.
Background technique
Pneumatic diaphragn actuating mechanism is the important component part of pneumatic control valve, and it often is used in the various industries such as chemical industry, metallurgy as pneumatic control valve drive unit commonly used.Pneumatic diaphragn actuating mechanism simple in structure, reliable in action, easy to maintenance, with low cost, thereby be used widely.Pneumatic diaphragn actuating mechanism commonly used is divided into positive interaction and two kinds of executive modes of reaction, as shown in Figures 1 and 2.Referring to Fig. 1, the positive interaction pneumatic diaphragn actuating mechanism produces a thrust on thin film membrane when input signal increases, and overcome the active force of spring in this thrust after, push rod is to outer displacement; Referring to Fig. 2, the input signal connection mouth of reaction pneumatic diaphragn actuating mechanism is near support one side, and when input signal increased, the displacement of push rod was inside, and is inner mobile to the film head.
Pneumatic diaphragn actuating mechanism is divided into conventional pneumatic diaphragn actuating mechanism and the pneumatic diaphragn actuating mechanism of high thrust.Above and the above modulating valve of high pressure (greater than ANSI600psi PN110) DN100 for normal pressure (less than ANSI600psi PN110) DN150, if larger at shut off differential pressure, in the unsettled situation of pressure medium, small size actuator just can't provide enough thrust, and the actuator of high thrust must design can be provided.The high thrust pneumatic diaphragn actuating mechanism is for the device of power source is provided to large bore valves (DN250-DN400), the occasion of comparing use with the pneumatic diaphragn actuating mechanism of routine requires comparatively strict, security requirement is higher, so structure is also more complicated, and traditional high thrust actuator is all without built-in rotation-preventing mechanism, cause that spool, valve rod rotate when the valve internal pressure is larger, and the push rod that drives pneumatic diaphragn actuating mechanism also rotates, and rotates by push rod the problem that the diaphragm rotation of the pneumatic diaphragn actuating mechanism that causes damages.If add antirotation keys in valve component, structure will very complex, and spool, valve rod easily vibrations in High Pressure Difference fluctuation medium, can have a strong impact on the degree of regulation of valve.And the spring in existing high thrust pneumatic diaphragn actuating mechanism only has an end tightening, and spring easy unstability under large stroke causes that modulating valve is linear, return difference does not meet standard code, the even fracture of spring.
Summary of the invention
The invention provides a kind of pneumatic diaphragn actuating mechanism with built-in anti-rotation device and this built-in anti-rotation device, particularly a kind of high thrust pneumatic diaphragn actuating mechanism with built-in anti-rotation device, to solve defects of the prior art.
Technological scheme of the present invention is as follows:
A kind of pneumatic diaphragn actuating mechanism with built-in anti-rotation device, it comprises membrane cover assembly, diaphragm, pallet, elastic element, push rod, wherein to be fixed in described membrane cover assembly inboard for diaphragm, pallet is fixed on described diaphragm, the elastic element two ends respectively with described membrane cover assembly be connected pallet and be connected, push rod one end is fixed on described pallet, and the other end passes described membrane cover assembly and is exposed to its outside, and described pneumatic diaphragn actuating mechanism also is provided with built-in anti-rotation device;
Wherein, described membrane cover assembly comprises upper membrane cover, adapter and the lower membrane cover that connects successively, the inboard anti-rotation guide member that is provided with the movement locus of the described built-in anti-rotation device of restriction of described adapter, described built-in anti-rotation device one end is fixedly connected on described pallet, the other end is slidably connected to described anti-rotation guide member, and described built-in anti-rotation device can be along the orbiting motion of described anti-rotation guide member restriction.
Preferably, described built-in anti-rotation device comprises the vertical portion that is fixedly connected on described pallet and is slidably connected to the horizontal part of described anti-rotation guide member, described vertical portion is fixedly connected with described horizontal part, and the end that described horizontal part is non-at it and described vertical portion is connected is provided with the moving link that coordinates with described anti-rotation guide member.
Preferably, described vertical portion comprises at least one anti-rotation screw rod, described horizontal part comprises at least one anti-rotation connecting rod, described anti-rotation screw rod be connected the anti-rotation connecting rod and connect by an anti-rotation connecting plate, wherein said anti-rotation connecting plate is provided with the first group mounting hole corresponding with described anti-rotation screw rod at vertical direction, is provided with in the horizontal direction the second group mounting hole corresponding with described anti-rotation connecting rod.
Preferably, described vertical portion comprises two anti-rotation screw rods, described horizontal part comprises an anti-rotation connecting rod, described first group of mounting hole is two mounting holes corresponding with described two anti-rotation screw rods, described second group of mounting hole is a mounting hole corresponding with described anti-rotation connecting rod, and two mounting holes of described first group of mounting hole do not communicate with a mounting hole of described second group of mounting hole.
Preferably, the described anti-rotation guide member of taking over the inboard is the anti-rotation direction recess, and the moving link of horizontal part one end of described built-in anti-rotation device is for snapping in the bearing of described anti-rotation direction recess, and described horizontal part is provided with the bump that blocks described bearing.
Preferably, described bearing is rolling bearing.Rolling bearing can guarantee that built-in anti-rotation device can normally move when whole stroke, the card jail can not occur, hinder the phenomenon of the normal operation of actuator.
Preferably, described bump is the step that a protrusion arranges.
Preferably, be arranged with the anti-rotation connecting sleeve outside described anti-rotation connecting rod, described anti-rotation connecting sleeve one end contacts with described anti-rotation connecting plate, and the other end contacts with described moving link.
Preferably, described anti-rotation screw rod two ends are equipped with the screw section, and its two ends are fixedly connected with described anti-rotation connecting plate with described pallet respectively with nut by screw thread.
Preferably, the described anti-rotation direction recess groove that is casting.The groove of casting can normally move when whole stroke by bearing, the card jail can not occur, hinder the phenomenon of the normal operation of actuator.
Preferably, described elastic element two ends are fixedly connected with described pallet with described membrane cover assembly respectively.Only have an end fixedly to compare with the spring of traditional high thrust pneumatic diaphragn actuating mechanism, the fixing processing mode of both ends of the spring more can be guaranteed the stability of this actuator.
Preferably, described pneumatic diaphragn actuating mechanism is the high thrust pneumatic diaphragn actuating mechanism.The rotation of push rod, spool and valve rod more easily appears due to the high thrust pneumatic diaphragn actuating mechanism, and the damage that causes due to rotation of diaphragm, can be more effective so built-in anti-rotation device of the present invention is used in the high thrust pneumatic diaphragn actuating mechanism.
the present invention also provides a kind of built-in anti-rotation device for pneumatic diaphragn actuating mechanism, described pneumatic diaphragn actuating mechanism comprises pallet and adapter, the adapter inboard of described pneumatic diaphragn actuating mechanism is provided with the anti-rotation guide member of the movement locus of the described built-in anti-rotation device of restriction, described built-in anti-rotation device comprises the vertical portion that is fixedly connected on described pallet and is slidably connected to the horizontal part of described anti-rotation guide member, described vertical portion is fixedly connected with described horizontal part, the end that described horizontal part is non-at it and described vertical portion is connected is provided with the moving link that coordinates with described anti-rotation guide member.
Compared with prior art, beneficial effect of the present invention is as follows:
The one, the present invention arranges built-in anti-rotation device in pneumatic diaphragn actuating mechanism, by this anti-rotation device with the movement limit of pallet in the anti-rotation direction recess of taking over, thereby effectively prevented the rotation of pallet under the prerequisite that does not affect stroke, and rupture of diaphragm and the damage of having avoided the rotation because of pallet to cause, extended life-span of diaphragm and pneumatic diaphragn actuating mechanism;
The 2nd, prevents that because push rod is fixedly connected with pallet pallet from rotating the while and also can prevent the throw-out lever rotation, even under very large rotation torque, also can prevent the throw-out lever rotation;
The 3rd. because push rod is connected with spool with valve rod, prevented that the push rod rotation from can guarantee that also spool, valve rod do not rotate simultaneously;
The 4th. this built-in anti-rotation device does not change the overall structure of whole pneumatic diaphragn actuating mechanism, thereby does not affect the ouput force of actuator;
The 5th. pneumatic diaphragn actuating mechanism and this built-in anti-rotation device compact structure with built-in anti-rotation device of the present invention, easily manufactured;
The 6th. the anti-rotation direction recess in adapter of the present invention is direct casting, need not process, bearing on anti-rotation device is rolling bearing simultaneously, thereby can guarantee that built-in anti-rotation device can normally move when whole stroke, the card jail can not occur, hinder the phenomenon of the normal operation of actuator;
The 7th. only have an end fixedly to compare with the spring of traditional high thrust pneumatic diaphragn actuating mechanism, the both ends of the spring of pneumatic diaphragn actuating mechanism of the present invention is fixed, thereby the stability of this actuator more can be guaranteed.
Certainly, implement arbitrary product of the present invention and might not need to reach simultaneously above-described all advantages.
Description of drawings
Fig. 1 is the structural representation of traditional positive interaction high thrust pneumatic diaphragn actuating mechanism;
Fig. 2 is the structural representation of classical inverse effect high thrust pneumatic diaphragn actuating mechanism;
Fig. 3 is the structural representation with the positive interaction high thrust pneumatic diaphragn actuating mechanism of built-in anti-rotation device of embodiments of the invention one;
Fig. 4 is the structural representation of the built-in anti-rotation device of embodiments of the invention one;
Fig. 5 is the structural representation of anti-rotation connecting plate of the built-in anti-rotation device of embodiments of the invention one;
Fig. 6 is the structural representation of anti-rotation connecting sleeve of the built-in anti-rotation device of embodiments of the invention one;
Fig. 7 is the structural representation of anti-rotation screw rod of the built-in anti-rotation device of embodiments of the invention one;
Fig. 8 is the structural representation of anti-rotation connecting rod of the built-in anti-rotation device of embodiments of the invention one;
Fig. 9 is the structural representation with the reaction high thrust pneumatic diaphragn actuating mechanism of built-in anti-rotation device of embodiments of the invention two.
Embodiment
The invention provides a kind of pneumatic diaphragn actuating mechanism with built-in anti-rotation device, a kind of high thrust pneumatic diaphragn actuating mechanism with built-in anti-rotation device particularly, increased anti-rotation device in pneumatic diaphragn actuating mechanism film chamber, when push rod moves up and down, the rotation-preventing mechanism of anti-rotation device slides in the anti-rotation guiding groove of taking over, and playing neither affects the effect that stroke can prevent that again throw-out lever rotates.
The present invention will be further described with specific embodiment by reference to the accompanying drawings in the below.
Embodiment one
referring to Fig. 3, the pneumatic diaphragn actuating mechanism with built-in anti-rotation device of the present embodiment, a kind of positive interaction high thrust pneumatic diaphragn actuating mechanism with built-in anti-rotation device specifically, it comprises the membrane cover assembly, diaphragm 2, pallet 3, elastic element, push rod 4, wherein the membrane cover assembly comprises the upper membrane cover 11 that connects successively, adapter 12 and lower membrane cover 13, upper membrane cover 11, adapter 12 and lower membrane cover 13 form the film chamber of this actuator, it is inboard that diaphragm 2 is fixed in the membrane cover assembly, be specially and be fixed in membrane cover 11 and take between 12, pallet 3 is fixed on diaphragm 2, specifically in the present embodiment, elastic element is symmetrically arranged two springs 5, are connected with pallet with the lower membrane cover 13 of membrane cover assembly respectively and are connected in the two ends of every spring, the two ends of every spring all are fixedly connected with pallet 3 with lower membrane cover 13 in the present embodiment, push rod 4 one ends are fixed on pallet 3, the other end passes the lower membrane cover 13 of membrane cover assembly and is exposed to its outside, also be provided with built-in anti-rotation device 1 in the film chamber of this pneumatic diaphragn actuating mechanism, wherein, take over the anti-rotation guide member that 12 inboards are provided with the movement locus of the above-mentioned built-in anti-rotation device 1 of restriction, specifically in the present embodiment, the anti-rotation direction recess 121 that this anti-rotation guide member is casting, above-mentioned built-in anti-rotation device 1 one ends are fixedly connected on pallet 3, the other end is slidably connected to anti-rotation direction recess 121, and this built-in anti-rotation device 1 can be along the orbiting motion of anti-rotation direction recess 121 restrictions.
referring to Fig. 4, specifically in the present embodiment, built-in anti-rotation device 1 comprises the vertical portion that is fixedly connected on pallet 3 and is slidably connected to the horizontal part of anti-rotation direction recess 121, particularly, in the present embodiment, the vertical portion comprises two anti-rotation screw rods 6, horizontal part comprises an anti-rotation connecting rod 7, two anti-rotation screw rods 6 are connected with the anti-rotation connecting rod by anti-rotation connecting plate 8 connections, wherein, anti-rotation connecting plate 8 is provided with and two first group of mounting holes that anti-rotation screw rod 6 is corresponding at vertical direction, be specially two mounting holes that be arranged in parallel 81, 82, anti-rotation connecting plate 8 is provided with the second group mounting hole corresponding with anti-rotation connecting rod 7 in the horizontal direction, be specially a mounting hole 83, referring to Fig. 5, wherein two of first group of mounting hole mounting holes do not communicate with a mounting hole of second group of mounting hole.Anti-rotation connecting rod 7 is fixedly connected with anti-rotation connecting plate 8 by a shaft block ring 73; Anti-rotation connecting rod 7 is provided with at its non-end that is connected with anti-rotation connecting plate 8 moving link that coordinates with anti-rotation direction recess 121, be specifically rolling bearing 71 in the present embodiment, and be provided with in rolling bearing 71 outsides and block one of rolling bearing 71 and protrude the step 72 that arranges.In addition, also be arranged with anti-rotation connecting sleeve 9 on anti-rotation connecting rod 7, its structure is referring to Fig. 6, and an end of anti-rotation connecting sleeve 9 contacts with anti-rotation connecting plate 8, and the other end contacts with rolling bearing 71.
Referring to Fig. 7, anti-rotation screw rod 6 two ends of the present embodiment are equipped with the screw section, and its two ends are fixedly connected with anti-rotation connecting plate 8 with pallet 3 respectively with nut 61, nut 62 by screw thread respectively, referring to Fig. 3 and Fig. 4.
Referring to Fig. 8, the anti-rotation connecting rod 7 of the present embodiment comprises three steps, and first step of upper end is connected with anti-rotation connecting plate 8, the sheathed anti-rotation connecting sleeve 9 of second step at middle part, and the 3rd step 72 of lower end is used for blocking rolling bearing, prevents that it from dropping out.
Below illustrate the mounting type of the built-in anti-rotation device of the present embodiment.
when the built-in anti-rotation device of the described the present embodiment of Fig. 3 is installed, at first pallet 3, diaphragm 2, push rod 4 use nuts are connected, then the threaded one end section with two anti-rotation screw rods 6 of built-in anti-rotation device is arranged on respectively on pallet, play the effect of location, the top screw thread that is specially in the present embodiment the anti-rotation screw rod 6 shown in Fig. 7 is connected with pallet 3, lower thread by the anti-rotation screw rod 6 shown in Fig. 7 is connected in two anti-rotation screw rods 6 with anti-rotation connecting plate 8 afterwards, during concrete the installation, first the pair of parallel borehole jack with anti-rotation connecting plate 8 enters on the polished rod of two anti-rotation screw rods, fix with hexagon thin nut again, in addition, to mill flat place be for easy for installation in the centre of anti-rotation screw rod 6, then, wear respectively rolling bearing 71 on anti-rotation connecting rod 7, anti-rotation connecting sleeve 9, and then anti-rotation connecting rod 7 is connected in anti-rotation connecting plate 8, be specially the second group of mounting hole that first step of anti-rotation connecting rod 7 upper ends in Fig. 8 is arranged in anti-rotation connecting plate 8, this second group of mounting hole is specially and disjoint another mounting hole vertical with the pair of parallel hole of first group of mounting hole, and the distance between the pair of parallel hole of this mounting hole and first group of mounting hole is identical, referring to Fig. 5, after above-mentioned several parts all install, fix with a shaft block ring 73, wherein, anti-rotation connecting sleeve 9 is enclosed within on anti-rotation connecting rod 7, left end contacts with anti-rotation connecting plate 8, the right contacts with bearing 71, anti-rotation connecting sleeve 9 plays a transition role in the centre, when whole film head is installed, bearing 71 1 ends on this built-in anti-rotation device are snapped in the top of the anti-rotation direction recess 121 of adapter 12 at last.
When the high thrust pneumatic diaphragn actuating mechanism of the present embodiment works, continuous increase along with source of the gas, pallet 3 meeting movements up and down, driving built-in anti-rotation device moves up and down, when the anti-rotation direction recess 121 that arranges in adapter 12 can guarantee whole stroke, the bearing 71 of built-in anti-rotation device all is stuck in anti-rotation direction recess 121, guarantees that the component that are connected with built-in anti-rotation device do not rotate.Wherein, push rod 4, diaphragm 2 are all to link together with pallet 3, fix with nut, as long as pallet 3 does not rotate, push rod 4 just can not rotate, and because push rod 4 is connected with movement parts in valve, push rod 4 does not rotate again, and in valve, movement parts is not rotated yet; Simultaneously, diaphragm 2 does not rotate yet, thereby just can not be damaged.
Embodiment two
Referring to Fig. 9, the present embodiment and embodiment's one difference is, above-mentioned built-in anti-rotation device is applied to reaction high thrust pneumatic diaphragn actuating mechanism, be specially, diaphragm is fixed between lower membrane cover and adapter, and pallet is fixedly connected with diaphragm, and pallet is fixedly connected with push rod, the anti-rotation screw rod of the vertical portion of built-in anti-rotation device is fixedly connected on pallet, and the anti-rotation direction recess that the bearing on the anti-rotation connecting rod of its horizontal part arranges in snapping in and taking over bottom.
can find out from embodiment shown in Figure 3 one and the described embodiment two of Fig. 9, the pneumatic diaphragn actuating mechanism film is provided with built-in anti-rotation device in the chamber, this built-in anti-rotation device is fixed on pallet, the rolling bearing of its horizontal part snaps in the anti-rotation direction recess of adapter, when being applied to the positive interaction pneumatic diaphragn actuating mechanism, the rolling bearing of built-in anti-rotation device is stuck in the top of the anti-rotation direction recess of adapter, when being applied to the reaction pneumatic diaphragn actuating mechanism, the anti-rotation direction recess that the rolling bearing of built-in anti-rotation device is stuck in adapter bottom, can guarantee in above-mentioned two situations that rolling bearing snaps in and be positioned at the anti-rotation direction recess of adapter always.This built-in anti-rotation device can guarantee pallet and take over keep relative non-rotary position, and simultaneously because the part in the middle of diaphragm is pressed on pallet, pallet does not rotate diaphragm and just not can rotate; And adapter and membrane cover link together, the periphery of diaphragm clips in the middle of adapter and diaphragm, take over pallet and guarantee relative not rotation status, whole diaphragm just can keep smooth state, usually the projected life of diaphragm is very long, only otherwise fold occurs, be can be gently not flimsy, the life-span of pneumatic diaphragn actuating mechanism just can not be affected because of the damage of diaphragm like this.
The above disclosed preferred embodiment of the present invention just is used for helping to set forth the present invention.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this invention yet and only is described embodiment.Obviously, according to the content of this specification, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to explain better principle of the present invention and practical application, thereby under making, the technical field technician can understand and utilize the present invention well.The present invention only is subjected to the restriction of claims and four corner and equivalent.
Claims (13)
1. pneumatic diaphragn actuating mechanism with built-in anti-rotation device, comprise membrane cover assembly, diaphragm, pallet, elastic element, push rod, wherein to be fixed in described membrane cover assembly inboard for diaphragm, pallet is fixed on described diaphragm, the elastic element two ends respectively with described membrane cover assembly be connected pallet and be connected, push rod one end is fixed on described pallet, the other end passes described membrane cover assembly and is exposed to its outside, it is characterized in that, described pneumatic diaphragn actuating mechanism also is provided with built-in anti-rotation device;
Wherein, described membrane cover assembly comprises upper membrane cover, adapter and the lower membrane cover that connects successively, the inboard anti-rotation guide member that is provided with the movement locus of the described built-in anti-rotation device of restriction of described adapter, described built-in anti-rotation device one end is fixedly connected on described pallet, the other end is slidably connected to described anti-rotation guide member, and described built-in anti-rotation device can be along the orbiting motion of described anti-rotation guide member restriction.
2. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 1, it is characterized in that, described built-in anti-rotation device comprises the vertical portion that is fixedly connected on described pallet and is slidably connected to the horizontal part of described anti-rotation guide member, described vertical portion is fixedly connected with described horizontal part, and the end that described horizontal part is non-at it and described vertical portion is connected is provided with the moving link that coordinates with described anti-rotation guide member.
3. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 2, it is characterized in that, described vertical portion comprises at least one anti-rotation screw rod, described horizontal part comprises at least one anti-rotation connecting rod, described anti-rotation screw rod be connected the anti-rotation connecting rod and connect by an anti-rotation connecting plate, wherein said anti-rotation connecting plate is provided with the first group mounting hole corresponding with described anti-rotation screw rod at vertical direction, is provided with in the horizontal direction the second group mounting hole corresponding with described anti-rotation connecting rod.
4. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 3, it is characterized in that, described vertical portion comprises two anti-rotation screw rods, described horizontal part comprises an anti-rotation connecting rod, described first group of mounting hole is two mounting holes corresponding with described two anti-rotation screw rods, described second group of mounting hole is a mounting hole corresponding with described anti-rotation connecting rod, and two mounting holes of described first group of mounting hole do not communicate with a mounting hole of described second group of mounting hole.
5. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as described in claim 2 or 4, it is characterized in that, the described anti-rotation guide member of taking over the inboard is the anti-rotation direction recess, the moving link of horizontal part one end of described built-in anti-rotation device is for snapping in the bearing of described anti-rotation direction recess, and described horizontal part is provided with the bump that blocks described bearing.
6. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 5, is characterized in that, described bearing is rolling bearing.
7. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 5, is characterized in that, described bump is the step that a protrusion arranges.
8. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as described in claim 3 or 4, it is characterized in that, the described anti-rotation connecting rod outside is arranged with the anti-rotation connecting sleeve, and described anti-rotation connecting sleeve one end contacts with described anti-rotation connecting plate, and the other end contacts with described moving link.
9. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as described in claim 3 or 4, is characterized in that, described anti-rotation screw rod two ends are equipped with the screw section, and its two ends are fixedly connected with described anti-rotation connecting plate with described pallet respectively with nut by screw thread.
10. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 5, is characterized in that, described anti-rotation direction recess is the groove of casting.
11. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 1 is characterized in that, described elastic element two ends are fixedly connected with described pallet with described membrane cover assembly respectively.
12. the pneumatic diaphragn actuating mechanism with built-in anti-rotation device as claimed in claim 1 is characterized in that, described pneumatic diaphragn actuating mechanism is the high thrust pneumatic diaphragn actuating mechanism.
13. built-in anti-rotation device that is used for pneumatic diaphragn actuating mechanism, described pneumatic diaphragn actuating mechanism comprises pallet and adapter, it is characterized in that, the adapter inboard of described pneumatic diaphragn actuating mechanism is provided with the anti-rotation guide member of the movement locus of the described built-in anti-rotation device of restriction, described built-in anti-rotation device comprises the vertical portion that is fixedly connected on described pallet and is slidably connected to the horizontal part of described anti-rotation guide member, described vertical portion is fixedly connected with described horizontal part, the end that described horizontal part is non-at it and described vertical portion is connected is provided with the moving link that coordinates with described anti-rotation guide member.
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| CN201310045154.8A CN103104741B (en) | 2013-02-05 | 2013-02-05 | Pneumatic thin film performing mechanism with built-in type anti-rotating device |
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| CN201310045154.8A CN103104741B (en) | 2013-02-05 | 2013-02-05 | Pneumatic thin film performing mechanism with built-in type anti-rotating device |
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| CN103104741B CN103104741B (en) | 2014-11-26 |
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| CN103807500A (en) * | 2014-02-27 | 2014-05-21 | 江苏康创自控工程有限公司 | Linkage device of valve rod and push rod |
| CN105508703A (en) * | 2015-11-24 | 2016-04-20 | 芜湖豫新世通汽车空调有限公司 | Double-spring vacuum driver |
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| Publication number | Publication date |
|---|---|
| CN103104741B (en) | 2014-11-26 |
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