CN104343763B - Pneumatic actuator - Google Patents
Pneumatic actuator Download PDFInfo
- Publication number
- CN104343763B CN104343763B CN201310325617.6A CN201310325617A CN104343763B CN 104343763 B CN104343763 B CN 104343763B CN 201310325617 A CN201310325617 A CN 201310325617A CN 104343763 B CN104343763 B CN 104343763B
- Authority
- CN
- China
- Prior art keywords
- piston rod
- sleeve pipe
- cylinder body
- transmission sleeve
- pneumatic apparatus
- 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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- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000033001 locomotion Effects 0.000 abstract description 7
- 238000013036 cure process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1414—Characterised by the construction of the motor unit of the straight-cylinder type with non-rotatable piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses a pneumatic actuator, comprising: the cylinder comprises a cylinder body, a piston rod and a transmission sleeve, wherein the transmission sleeve is sleeved at the extending end of the piston rod, the extending end is provided with a spiral groove, and when the extending end of the piston rod moves relative to the cylinder body, the guide rod drives the transmission sleeve to rotate around the extending end of the piston rod under the pushing of the spiral groove. Thereby converting the linear stroke motion of the piston into an axial motion. Through the screw pair guide mechanism, the guide distance is shortened, the transmission space is saved, and the problems of long guide distance and large element size in the prior art are solved.
Description
Technical field
The present invention relates to gas transmission field, particularly to pneumatic apparatus.
Background technology
Pneumatic apparatus is the important component in pneumatic actuator system and control system.It is widely used in oil
Commercial production and the manufacture fields such as chemical industry, Coal Chemical Industry, metallurgy, electric power.In pneumatic actuator system, pneumatic apparatus can also be used with
In the open and close of the valves such as ball valve, dish valve, plug valve are controlled.The execution of existing fork type pneumatic apparatus
Process is, air pressure promote piston and piston rod to move along a straight line, and piston rod drives shift fork to rotate, and is axle by transform linear motion
Line rotates.For making 90 ° of moments of torsion of the rotatable output of fork type pneumatic element, corresponding rectilinear path just by need bigger stroke away from
From, thus need to take bigger accommodation space.It follows that existing shifting fork structure executive component its take up room relatively big,
Narrow space or restricted require time, will be unable to use so that the versatility of pneumatic apparatus is poor.
Summary of the invention
For defect of the prior art, one aspect of the present invention provides a kind of pneumatic apparatus, and its element passes through spiral shell
The secondary guiding mechanism of rotation, shortens guiding distance, has saved transmission space.Thus solve and pneumatic in above-mentioned prior art perform unit
Problem existing for part.
Pneumatic apparatus provided in one embodiment of the present invention, including: cylinder body 1, piston 2 and piston rod 3, its
Being characterised by, also include: transmission sleeve pipe 4, the interior caliber of described transmission sleeve pipe 4 is corresponding to the external part external diameter of described piston rod 3,
It is set in outside the external part of described piston rod 3, is flexibly connected with described cylinder body 1 side；The external part of described piston rod 3 sets
Have: spiral groove 31；The radially fixed guide post of inner tube 5 of described transmission sleeve pipe 4, the guide end external diameter of described guide post 5 with
The groove width of described spiral groove 31 is corresponding, is assemblied in described spiral groove 31, makes the external part of described piston rod 3 from institute
Stating when stretching out in cylinder body 1, described guide post 5, under the promotion of described spiral groove 31, drives described transmission sleeve pipe 4 around institute
The external part stating piston rod 3 rotates.
In some embodiments, also include: adjusting stud 6, described adjustment stud 6 penetrates from the side of cylinder body 1, and with
Described cylinder body 1 is flexibly connected, and the end that penetrates of described adjustment stud 6 is positioned at the air inlet side of described piston 2, at the beginning of described piston 2
Beginning position offsets with the end face of described piston 2.
In some embodiments, also include: base sleeve 7, the endoporus of described base sleeve 7 and described transmission sleeve pipe 4
External diameter corresponding, one end of described base sleeve 7 is fixing with described cylinder body 1 to be connected, endoporus and the free end of described transmission sleeve pipe 4
External diameter is flexibly connected.
In some embodiments, also including: ring flange 8, described ring flange 8 is connected with the outer wall of described base sleeve 7.
In some embodiments, described spiral groove 31 is multiple spiral groove, the plurality of spiral groove
External part cylindrical along described piston rod 3 is symmetrical or is uniformly distributed.
In some embodiments, the bottom of described spiral groove 31 is cure process face.
In some embodiments, the end face of the guide end of described guide post 5 is high strength cemented carbide face.
In some embodiments, also including: limited cover 9, described limited cover 9 is fixed on described guide post 5 and described biography
Dynamic sleeve pipe 4 connects the end of end.
In some embodiments, also include: fixing bar 10, described fixing bar 10 through piston inlet chamber with give vent to anger
Chamber, two ends are fixing with described cylinder body 1 to be connected.
Compared with prior art, having the advantage that according to the present invention
1, spiral pneumatic actuator has compact conformation, the advantage that stroke is short.
2, piston rod only drawn by axis direction, compressive stress, do not have the applying of side force can improve the stress of piston rod
Situation.
3, piston rod spiral groove surface and the roller bearing face of cylinder are greatly enhanced through intensive treatment, contact surface intensity.
4, roller bearing can be around its axis rotation in piston rod and power transmission shaft, and this structure makes between roller bearing and helicla flute as rolling
Dynamic friction, reduces abrasion, improves service life.
Accompanying drawing explanation
Fig. 1 is the pneumatic apparatus structural representation in one embodiment of the present invention；
Fig. 2 is the structural representation of transmission sleeve pipe in the pneumatic apparatus of the present invention in Fig. 1.
Reference numerals list:
Caliber in 1-cylinder body, 2-piston, 3-piston rod, 31-spiral groove, 32-external part, 4-transmission sleeve pipe, 41-,
42-driving end, 5-guide post, 51-fix end, 52-guide end, 6-adjust stud, 7-base sleeve, 71-base sleeve interior
Hole, one end of 72-base sleeve, 73-bolt, 8-ring flange, 9-limited cover, 10-fix bar, 11-cylinder cap, 12-dividing plate, 121-
The side of dividing plate, 13-back-moving spring.
Detailed description of the invention
Below in conjunction with the accompanying drawings invention is described in further detail.
With reference to the pneumatic apparatus that Fig. 1, Fig. 1 are present invention structural representation in one embodiment.The present invention
In pneumatic apparatus, including the cylinder body 1, piston 2, piston rod 3 and the transmission sleeve pipe 4 that are made up of cylinder cap 11 and dividing plate 12.Live
Filling in the 2 coaxially connected piston rods in side 3, be assemblied in the inner chamber of cylinder body 1, when air inlet " A " air inlet of cylinder body 1, gas outlet " B " goes out
During gas, promoting piston 2, moves to opposite side in the side from cylinder body 1 inner chamber.On the cylindrical of the external part 32 of piston rod 3, edge
Axially offering spiral groove 31, the interior caliber 41 of transmission sleeve pipe 4 is corresponding to the external diameter of the external part 32 of piston rod 3, interior caliber
41 are assemblied in outside the external part 32 of piston rod 3, and the upper surface of transmission sleeve pipe 4 is connected with dividing plate 12 bearing, is placed in dividing plate 12
121 sides.In the interior caliber 41 of transmission sleeve pipe 4, fixing end 51 and the interior caliber 41 of the i.e. guide post 5 of radially secure guide post 5(
Sidewall vertically connect), the external diameter of the guide end 52 of guide post 5 is corresponding with the groove width of spiral groove 31, is assemblied in spiral
In shape groove 31.When making the external part of described piston rod 3 (that is, dividing plate 12 side) stretch out from cylinder body 1 (linear motion), guide post
5 under the promotion of spiral groove 31, drives transmission sleeve pipe 4 to rotate (around 3 turns of piston rod around the external part of piston rod 3
Dynamic).For make piston 2 when running to side the most steady, between the dividing plate 12 and piston 2 of cylinder body 1, be additionally provided with back-moving spring
13, thus when air inlet " A " initial charge (when having pneumatics in outlet pipe), piston 2 in During initial movement not
Play can be produced, meanwhile, when air inlet " A " stops air inlet or aerofluxus, piston 7 can be made to move to initial position.
In one embodiment of the present invention, the work process of pneumatic apparatus is, during air inlet " A " air inlet, and source of the gas pressure
Trying hard to recommend dynamic piston 2 and piston rod 3 moves along a straight line downwards, the downward compression reseting spring 13 of piston 2, piston rod 3 moves down, band
Action-oriented bar 5 moves along helical trajectory in piston rod 8 spiral groove 31, and guide post 5 drives transmission sleeve pipe 4 to turn around its axis
Dynamic.When driving end 42 connecting valve or the external spacing equipment of transmission sleeve pipe 4, being turned on and off of valve can be realized.Instead
It, during air inlet " A " aerofluxus, piston 2 moves up under back-moving spring 13 acts on, and drives piston rod 3 upwards to move along a straight line,
Piston rod 8 drives guide post 5 to move in spiral groove 31, and guide post 5 drives transmission sleeve pipe 4 rotatable around its axis,
Realize the position-limit mechanism motion of external valve, thus realize being turned on and off of valve.
For making cylinder 1 can be operated on multiple initial position, the needs of the initial position of different valve can be met, at this
In a kind of embodiment of invention, also include: adjust stud 6, adjust stud 6 and penetrate from the side of cylinder cap 11 and cylinder cap 11 screw thread
Connecting, the end that penetrates adjusting stud 6 is positioned at the air inlet side of piston 2, offsets with the end face of piston 2 at the initial position of piston 2.By
In adjust stud 6 with cylinder cap 11 for threadeding, therefore, when needed, can from outside regulate adjustment stud 6 screw-in away from
From, thus realize the regulation to piston 2 initial position.Therefore, the status requirement that different control valve is turned on and off can be met,
Improve the scope of application of element.
For making the control transmission (i.e. the motion of transmission sleeve pipe 4) of this element be not easily susceptible to the interference in the external world, and keep stable,
In one embodiment of the invention, also include: base sleeve 7, the endoporus 71 of base sleeve 7 and the external diameter of transmission sleeve pipe 4
Accordingly, one end 72 of base sleeve 7 is connected by bolt 73 is fixing with cylinder cap 11, and endoporus 71 is by bearing and transmission sleeve pipe 4
Free end external diameter is flexibly connected, thus produces transmission sleeve pipe 4 at the two ends of transmission sleeve pipe 4 and support, so that transmission sleeve pipe 4
Rotate the most steady.Meanwhile, it is fixed with other devices for ease of element of the present invention, in one embodiment of the present invention
In, also including: ring flange 8, this ring flange 8 is connected with the outer wall of base sleeve 7 (for ring flange 8 and base sleeve 7 shown in figure
Integrally manufactured situation).
For making transmission sleeve pipe 4 the most steady to the guiding of guide post 5, in one embodiment of the invention, spiral type
Groove 31 can also be multiple spiral groove, such as 2,3 etc., and stretching out of the piston rod 3 on the plurality of spiral groove edge
End cylindrical is symmetrical or is uniformly distributed.Thus increase the transmission area of guide post 5 and spiral groove 31, thus ensure that transmission is more
For steadily.Meanwhile, for strengthening the intensity of spiral groove 31, the bottom of spiral groove 31 can be carried out Surface hardening treatment,
The bottom making spiral groove 31 is cure process face.Simultaneously, it is possible to the assembling end to guide post 5 with spiral groove 31 assembling
Face 52 carries out welded high-strength hard alloy process, and guide end 52 surface making guide post 5 is high strength cemented carbide face.Thus
Improve the service life of element.
In view of the ruggedness of element of the present invention, the fixing end 51 at guide post 5 also fixes limited cover 9, and limited cover 9 is fixed
It is connected the end of end with transmission sleeve pipe 4 in guide post 5.It is therefore prevented that guide post 5 and transmission sleeve pipe 4 during life-time service
Dockingundocking.Thus improve the reliability of element.
For make this plunger of component 2 when running in cylinder body 1 more stable, in certain embodiments of the present invention, also wrap
Including: fixing bar 10, fixing bar 10 is through the inlet chamber of piston and outlet chamber, and one end is fixing with cylinder cap 11 to be connected, the other end and
Dividing plate 12 is fixing to be connected, thus prevents the axial float of piston 2, makes transmission sleeve pipe 4 more stable to the control of external valve.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, it is also possible to making some deformation and improvement, these broadly fall into the protection model of the present invention
Enclose.
Claims (9)
1. pneumatic apparatus, including: cylinder body (1), piston (2) and piston rod (3), it is characterised in that also include: transmission sleeve pipe
(4), the interior caliber of described transmission sleeve pipe (4) is corresponding to the external part external diameter of described piston rod (3), is set in described piston rod
(3), outside external part, it is flexibly connected with described cylinder body (1) side；The external part of described piston rod (3) is provided with spiral groove
(31)；The radially fixed guide post of the inner tube (5) of described transmission sleeve pipe (4), the guide end external diameter of described guide post (5) and described spiral shell
The groove width of rotation shape groove (31) is corresponding, is assemblied in described spiral groove (31), makes the external part of described piston rod (3) from institute
Stating when stretching out in cylinder body (1), described guide post (5), under the promotion of described spiral groove (31), drives described transmission sleeve pipe
(4) external part around described piston rod (3) rotates.
Pneumatic apparatus the most according to claim 1, it is characterised in that also include: adjust stud (6), described adjustment spiral shell
Post (6) penetrates from the opposite side of cylinder body (1), and is flexibly connected with described cylinder body (1), and position is held in penetrating of described adjustment stud (6)
In the air inlet side of described piston (2), offset with the end face of described piston (2) at the initial position of described piston (2).
Pneumatic apparatus the most according to claim 1 or claim 2, it is characterised in that also include: base sleeve (7), described base
The endoporus of sleeve pipe (7) is corresponding to the external diameter of described transmission sleeve pipe (4), and one end of described base sleeve (7) is solid with described cylinder body (1)
Fixed connection, the endoporus of described base sleeve (7) is flexibly connected with the free end external diameter of described transmission sleeve pipe (4).
Pneumatic apparatus the most according to claim 3, it is characterised in that also include: ring flange (8), described ring flange (8)
It is connected with the outer wall of described base sleeve (7).
Pneumatic apparatus the most according to claim 1, it is characterised in that described spiral groove (31) is multiple spiral type
Groove, the plurality of spiral groove is symmetrical along the external part cylindrical of described piston rod (3) or is uniformly distributed.
Pneumatic apparatus the most according to claim 5, it is characterised in that the bottom of described spiral groove (31) is hardening
Process face.
7. according to pneumatic apparatus described in claim 1 or 4 or 6, it is characterised in that the guide end of described guide post (5)
End face be high strength cemented carbide face.
Pneumatic apparatus the most according to claim 7, it is characterised in that also include: limited cover (9), described limited cover
(9) it is fixed on described guide post (5) and is connected the end of end with described transmission sleeve pipe (4).
Pneumatic apparatus the most according to claim 1, it is characterised in that also include: fixing bar (10), described fixing bar
(10) through inlet chamber and the outlet chamber of piston, two ends are fixing with described cylinder body (1) to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325617.6A CN104343763B (en) | 2013-07-30 | 2013-07-30 | Pneumatic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310325617.6A CN104343763B (en) | 2013-07-30 | 2013-07-30 | Pneumatic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104343763A CN104343763A (en) | 2015-02-11 |
| CN104343763B true CN104343763B (en) | 2016-12-28 |
Family
ID=52500042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310325617.6A Active CN104343763B (en) | 2013-07-30 | 2013-07-30 | Pneumatic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104343763B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6666129B1 (en) * | 1999-10-21 | 2003-12-23 | Tuchenhagen Gmbh | Operating device for a rotatable closing element of a valve |
| CN201696388U (en) * | 2010-06-23 | 2011-01-05 | 徐州惠科自动化工程有限公司 | Driving cylinder of which piston rod capable of conducting combination movement of linear and rotation |
| CN102285526B (en) * | 2010-06-21 | 2012-12-12 | 徐州惠科自动化工程有限公司 | Adhesive tape clamping braking device with swingable splint |
| CN202780573U (en) * | 2012-09-11 | 2013-03-13 | 台州万洲机械有限公司 | Rotary clamp |
| CN103115034A (en) * | 2011-11-16 | 2013-05-22 | 鸿富锦精密工业（深圳）有限公司 | Rotary cylinder |
| CN203394917U (en) * | 2013-07-30 | 2014-01-15 | 航天长征化学工程股份有限公司 | Pneumatic execute element |
-
2013
- 2013-07-30 CN CN201310325617.6A patent/CN104343763B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6666129B1 (en) * | 1999-10-21 | 2003-12-23 | Tuchenhagen Gmbh | Operating device for a rotatable closing element of a valve |
| CN102285526B (en) * | 2010-06-21 | 2012-12-12 | 徐州惠科自动化工程有限公司 | Adhesive tape clamping braking device with swingable splint |
| CN201696388U (en) * | 2010-06-23 | 2011-01-05 | 徐州惠科自动化工程有限公司 | Driving cylinder of which piston rod capable of conducting combination movement of linear and rotation |
| CN103115034A (en) * | 2011-11-16 | 2013-05-22 | 鸿富锦精密工业（深圳）有限公司 | Rotary cylinder |
| CN202780573U (en) * | 2012-09-11 | 2013-03-13 | 台州万洲机械有限公司 | Rotary clamp |
| CN203394917U (en) * | 2013-07-30 | 2014-01-15 | 航天长征化学工程股份有限公司 | Pneumatic execute element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104343763A (en) | 2015-02-11 |
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