CN104895867B - self-resetting cylinder - Google Patents
self-resetting cylinder Download PDFInfo
- Publication number
- CN104895867B CN104895867B CN201410081495.5A CN201410081495A CN104895867B CN 104895867 B CN104895867 B CN 104895867B CN 201410081495 A CN201410081495 A CN 201410081495A CN 104895867 B CN104895867 B CN 104895867B
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- Prior art keywords
- cylinder
- spring
- piston
- self
- resetting
- Prior art date
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Classifications
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- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- 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
Abstract
The invention discloses a kind of Self-resetting cylinder, including：Double rod cylinders, go out bar side in double rod cylinders one and spring return mechanism is set, cylinder piston is returned to initial position when being not subject to gas pressure.Meanwhile stroke control mechanism is also provided with, solve in the prior art, the problem of cylinder can not automatically reset and stroke is unadjustable.Therefore, the Self-resetting air cylinder structure proposed in the present invention is compact, and output action power is big and delivery stroke is adjustable, is applicable to a variety of valves, can drive the valve of different strokes, reduces the species of cylinder.Therefore, system input is reduced, expands the use range of cylinder.
Description
Technical field
The present invention relates to the application field of gas performs device, more particularly to Self-resetting cylinder.
Background technology
Cylinder is the important composition mechanism in pneumatic actuator system and control system.It is widely used in petrochemical industry, coal
The industrial productions such as chemical industry, metallurgy, electric power and manufacture field.In pneumatic actuator system, cylinder can be additionally used in regulating valve, throttling
The open and close of the valves such as valve, plunger valve are controlled.General traditional straight trip stroke cylinder is in design, by the valve rod of valve
The stroke that hoisting depth exports as cylinder, turn into a fixed parameter once after the stroke of cylinder determines.Traditional is straight
Stroke cylinder, due to determine Strok mechanism, therefore uniquely fixed stroke can only be exported, the versatility of such cylinder is poor, fits
Valve is narrower, it is impossible to meets the requirement of some Special valves.Meanwhile for requiring valve in the special dimensions such as coal chemical industry
Door is closed in specified open position, such as：The regulating valve of Direct Travel requires that the keying position of valve is located at the 10% of valve rod total travel
Place, meanwhile, with the change of coal chemical industry technological requirement, the keying position of same regulating valve will also change, general traditional
Cylinder can not meet this requirement.
It follows that during the present invention is realized, inventor has found to have the following disadvantages in the prior art：Existing skill
Because straight trip stroke cylinder stroke after dispatching from the factory is fixed in art, so that the execution distance of cylinder is fixed, so as to meet needs
Stroke is the requirement that command range need to adjust, and reduces the applicability of cylinder, improves the purchase cost of cylinder.
The content of the invention
For in the prior art the defects of, to solve the problems, such as that above-mentioned existing cylinder is present, the present invention propose it is a kind of from
Reset cylinder,.
The present invention proposes Self-resetting cylinder, including：Double rod cylinders, wherein, go out bar side in double rod cylinders one
Spring return mechanism is set, cylinder piston is returned to initial position when being not subject to gas pressure.
In one embodiment, in addition to：Position-limit mechanism, the position-limit mechanism, it is arranged at the end of a rod.
In one embodiment, the spring return mechanism is arranged between the position-limit mechanism and cylinder body.
In one embodiment, the spring return mechanism is set in the plunger shaft residing for a rod, if
It is placed between side piston and inboard wall of cylinder block.
In one embodiment, in addition to：Cylinder is sealed, the seal cylinder sleeve is loaded on the outside of the spring return mechanism,
It is described sealing cylinder internal diameter it is corresponding to the spring cylinder piston external diameter of the spring return mechanism, make the spring cylinder outside piston and
Inside wall of cylinder fitting is sealed, the side of the sealing cylinder is fixedly connected with double rod cylinders.
In one embodiment, the spring of the spring return mechanism is double pocketed springs.
In one embodiment, balance through hole is opened up on the spring cylinder piston.
In one embodiment, the balance through hole is distributed along the spring cylinder piston radial even circumferential.
In one embodiment, sliding bearing is also set up in the piston hole of double rod cylinders and the sealing cylinder.
In one embodiment, in addition to：Damping ring, the damping ring are fixed on the work of double rod cylinder inner cavities
On the outside of consent.
In one embodiment, the upper side of the cylinder upper end cover includes corresponding ring with the downside of spring cylinder cap
Shape groove, the annular groove is corresponding to the external diameter of the sealing cylinder, the both ends of the sealing cylinder is assemblied in the cylinder upper end cover
Upper side annular groove, and in the downside annular groove of the spring cylinder cap.
It follows that compared with prior art, Self-resetting cylinder of the invention has advantages below：It is compact-sized, output
Active force is big and delivery stroke is adjustable, is applicable to a variety of valves, can drive the valve of different strokes, reduces the kind of cylinder
Class.Therefore, system input is reduced, expands the use range of cylinder.
Brief description of the drawings
Fig. 1 is the structural representation of Self-resetting cylinder in one embodiment of the present invention；
Fig. 2 is the structural representation of Self-resetting cylinder in another embodiment of the present invention;
Fig. 3 is the structural representation of the Self-resetting cylinder in one embodiment of the present invention with range-adjustable function；
Fig. 4 is the structural representation of the Self-resetting cylinder in another embodiment of the present invention with range-adjustable function；
Fig. 5 is the structural representation of the Self-resetting cylinder in one embodiment of the present invention with dual reset spring；
Fig. 6 is the balance through hole schematic diagram of spring cylinder piston in one embodiment of the present invention；
Fig. 7 is the schematic diagram for having in one embodiment of the present invention in cylinder body damping structure.
Reference numerals list is as follows：
K1. stomata；2. cylinder bottom end cover；3. cylinder body；4. cylinder piston；5. cylinder upper end cover；K2. stomata；6. clamp screw
Nail；7. spring cylinder piston；8. spring cylinder piston rod；9. back-moving spring；10. seal cylinder；11. spring cylinder cap；12. protection cap；13.
Adjusting nut；C2. annular groove；14. sliding bearing；15. guidance tape；C1. annular groove；16. sliding bearing；17. adapter sleeve
Cylinder；18. sliding bearing；K3 balances through hole；20. pair rod cylinder；21. control-rod；22. perform bar；23. damping ring；30. spring
Resetting-mechanism；31. clamping boss；Pocketed springs in 91..
Embodiment
Invention is described in further detail below in conjunction with the accompanying drawings.
Such as the structural representation that Fig. 1 is Self-resetting cylinder in an embodiment of the present invention, the knot of Self-resetting cylinder of the present invention
Structure is, in the end set spring return mechanism 30 of the control-rod 21 of double rod cylinders 20.In spring return mechanism 30, control
The end of bar 21 is fixedly connected by screw thread with spring cylinder piston rod 8（The end of control-rod 21 is lengthened）, to protect
The steadiness of its connection is demonstrate,proved, upon connection using positioning screw 6 from side（Radially）It is fixed, so as to avoid loosening.In spring cylinder
One end assembling spring cylinder cap 11 of piston rod 8, in the one end of spring cylinder piston rod 8（Boss is on spring cylinder piston rod 8）It is cylindrical
Upper setting clamping boss 31, makes spring cylinder piston 7 be installed on the clamping boss 31.Wherein, spring cylinder piston rod 8 and control-rod
21 end can be the threaded form of diagram, can also use integration processing to give and realize.Back-moving spring 9 is assemblied in spring
Between cylinder piston 7 and spring cylinder cap 11, the both ends of back-moving spring 9 offset with spring cylinder piston 7 and spring cylinder cap 11 respectively.It is above-mentioned
Cylindrically coiled spring or conical helical spring can be selected in back-moving spring 9.To make the playback of back-moving spring 9 more accurate, sensitive, its
Back-moving spring 9 should have certain initial deformation amount when being assemblied between spring cylinder piston 7 and spring cylinder cap 11, ensure gas
The accurate playback of cylinder piston 4.Therefore, when K1 stomata air inlets, pusher cylinder piston 4 to A directions move, drive control-rod 21 and
Spring cylinder piston rod 8 moves up, and back-moving spring 9 produces compression.When K1 stomatas stop air inlet, cylinder piston 4 is resetting bullet
Under the promotion of spring 9, drive control-rod 21 and spring cylinder piston rod 8 to move down, return to original position.
In the case of movement travel is less, to make the reset of control-rod 21 more sensitive, as shown in Fig. 2 in the present invention
A kind of embodiment in, spring return mechanism 30 is arranged in the cavity of the one end of control-rod 21, the both ends of back-moving spring 9 and gas
The upper surface of cylinder piston 4 and the lower surface of cylinder upper end cover 5 offset.When K1 stomata air inlets, pusher cylinder piston 4 is to A directions
It is mobile, compression is directly produced to back-moving spring 9, has saved transmission distance.When K1 stomatas stop air inlet, cylinder piston 4 is multiple
Under the promotion of the position stretching force of spring 9, original position is returned to.It is achieved thereby that the parking position accuracy of small stroke, and saved cylinder
Body volume.
Adjusted for ease of being given to the stroke of above-mentioned double rod cylinders 20, as shown in Figure 3,4, a kind of in the present invention implements
In mode.In the end of the control-rod 21 of double rod cylinders 20（That is the end of spring cylinder piston rod 8）External screw thread is opened up, and at this
Matching stop nut 13 is assembled on external screw thread, the stop nut is being controlled along externally threaded axial movement
The end of bar 21 forms screw thread position-limit mechanism.The fixing assembling of cylinder piston 4 of the other end of control-rod 21 and double rod cylinders 20,
The cylinder piston 4 simultaneously with double rod cylinders 20 execution bar 22 one end fixing assembling, in practical application, control-rod 21 with
Performing bar 22 can be integrally machined, and integrally be assembled with the centre bore of cylinder piston 4, and for ease of processing, control-rod 21 is with performing bar 22
After can also individually processing with the fixing assembling of cylinder piston 4.Bilateral air inlet/outlet K1, K2 of its pair of rod cylinder 20, are opened in
On cylinder bottom end cover 2 and cylinder upper end cover 5, and it is fixedly connected with the both ends of cylinder body 3, its bilateral air inlet/outlet K1, K2 aperture
It is preferably ＆3 Huos ＆5mm.The cylinder block material of above-mentioned double rod cylinders 20 is preferably the materials such as ordinary carbon steel or stainless steel.Its
In, diameter of cylinder can be chosen for~.
As shown in Figure 3,4, when needing that the original position of execution bar 22 or overall stroke is adjusted, spacing spiral shell is adjusted
Mother 13, control-rod 21 is set to be moved to side, cylinder piston 4 is in the movement of the inner chamber of double rod cylinders 20.Such as, cylinder diameter 50mm, always
Stroke 180mm, when need to be 150mm by stroke adjustment, rotary spacing nut 13 moves up control-rod 21 on control-rod 21
30mm（Total kilometres are made to be adjusted to 150mm）, synchronously make the mobile 30mm in the inner chamber of double rod cylinders 20 of cylinder piston 4, reach
Give to cylinder stroke the purpose of regulation.
In order to further increase the reset deformation force of spring, as shown in figure 5, in one embodiment of this invention, resetting
Inside spring 9, interior pocketed springs 91 are also provided with, make the occasion bigger present invention can apply to require power output.
As shown in figure 3, to make the spring reset deformation force of back-moving spring 9 is more stable to put on spring cylinder piston 7,
Pocketed springs cylinder body is gone back in the outside of spring cylinder piston 7（It is consistent with the part name in description of reference numerals）10, seal cylinder 10
Downside is inserted into the upper surface annular groove C1 of the cylinder upper end cover 5 of double rod cylinders 20, and upside loads under spring cylinder cap 11
In the annular groove C2 of end face, by studs and nut will seal cylinder 10 and spring cylinder cap 11 is fixed on cylinder upper end cover 5
On the annular groove C1 of end face, so as to form more stable be fixedly connected with double rod cylinders 20.The internal diameter of the sealing cylinder 10 with
The external diameter of spring cylinder piston 7 is corresponding, makes spring cylinder piston 7 cylindrical and is bonded with the sealing inwall of cylinder 10.To seal spring cylinder piston 7
Slip in cylinder 10 is more steady, spring cylinder piston 7 external cylindrical surface built with guidance tape 15.
The adjustable side of spring cylinder piston rod 8 is stretched out provided with external screw thread from spring cylinder cap 11, is threadedly coupled with adjusting nut 13,
Adjusting nut 13 is against on the upper surface step of spring cylinder cap 11.The centre bore of spring cylinder cap 11 is built with sliding bearing 14, spring cylinder
Piston rod 8 is located in sliding bearing 14.
The course of work of cylinder is in present embodiment：When from the stomata K1 air inlets of cylinder bottom end cover 2, bleed pressure pushes away
Dynamic cylinder piston 4, which drives, performs bar 22, branch sleeve 17, spring cylinder piston rod 8, spring cylinder piston 7 and adjusting nut 13 together
Move up, the compression spring 9 of spring cylinder piston 7, now, be vented from the stomata K2 of cylinder upper end cover 5, until cylinder piston 4 with
The lower surface of cylinder upper end cover 5 offsets.When the stomata K1 exhausts of cylinder bottom end cover 2, the compressed push the spring cylinder of spring 9 is lived
Plug 7 and spring cylinder piston rod 8 move down, and drive adjusting nut 13, perform bar 22, branch sleeve 17 and cylinder piston 4 together
Move down, until the upper surface of adjusting nut 13 and spring cylinder cylinder cap 11 offsets.In order to increase the power output of cylinder and effect
Speed, meanwhile, it can also make the stomata K2 air inlets of cylinder upper end cover 5, bleed pressure pusher cylinder piston 4 moves down, with spring
Cylinder piston rod 8 drives execution bar 22 to move down together.Performing moving up and down for bar 22 can drive connected valve to live
Stopper rod does reciprocating linear action, realizes the opening and closing of valve.The delivery stroke of this cylinder has regulatory function：Pass through regulation
Nut 13 can adjust the upper-lower position of spring cylinder piston rod 8 and spring cylinder piston 7 in sealing cylinder 10, pass through spring cylinder piston
It is threadedly coupled between bar 8 and execution bar 22, synchronous adjustment performs the upper-lower position of bar 22 and cylinder piston 4 in cylinder body 3.Cylinder
At the end of the stomata K1 exhausts of bottom end cover 2, the distance between the upper surface of cylinder piston 4 and cylinder upper end cover 5 h are the row of cylinder
Journey.Further, it is also possible to adjust adjusting nut 13 at any time, execution bar 22 is stretched out different length, the stroke h of cylinder is passed through tune
Whole adjusting nut 13 realizes the real-time adjustment of cylinder stroke.
To avoid the maloperation to adjusting nut 13, protection cap 12 is provided with the upper surface boss of spring cylinder cap 11, is protected
Lid 12 is fixed on spring cylinder cap 11 by screw.The both ends of branch sleeve 17 difference being arranged in the centre bore of cylinder upper end cover 5
Offseted with the end of spring cylinder piston rod 8 in the cylinder piston 4 in cylinder body 3 and sealing cylinder 10, make execution bar 22 and cylinder piston
4th, branch sleeve 17, spring cylinder piston rod 8, adjusting nut 13 are integrated and can synchronously do reciprocating linear action.
To make spring cylinder piston 7 operationally more steady, in one embodiment of the invention, in spring cylinder piston
7 are provided with one or more balance through hole K3, upper and lower two cavitys of the inner spring cylinder piston 7 of communication seals cylinder 10, the balance through hole
K3 aperture and quantity, it can be set according to cylinder diameter size, so as to ensure piston when moving up and down, not in some intracavitary moment
Assemble a certain amount of air pressure, make the movement of piston unaffected.
To make each side's uniform force of spring cylinder piston 7, as shown in fig. 6, in one embodiment of the invention, balance is logical
Hole K3 is uniformly distributed along the radial circumference of spring cylinder piston 7.Particular number is preferably 6,8 or 10.（It is illustrated as the feelings in 8 holes
Condition）
To reduce the operationally shock with double inner chambers of rod cylinder 20 of cylinder piston 4, as shown in fig. 7, the present invention's
In a kind of embodiment, the central hole of cylinder bottom end cover 2 in double inner chambers of rod cylinder 20 sets damping ring 23, reduces cylinder
Impact of the piston 4 to cylinder bottom end cover 2, reduce noise during cylinder operation.
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, various modifications and improvements can be made, these belong to the protection domain of invention.
Claims (2)
1. Self-resetting cylinder, including：Double rod cylinders (20), it is characterised in that go out bar side in double rod cylinders (20) one
Spring return mechanism (30) is set, cylinder piston (4) is returned to initial position when being not subject to gas pressure；
Further, the Self-resetting cylinder also includes：Position-limit mechanism, the position-limit mechanism, it is arranged at the end of a rod
Portion；
Further, the spring return mechanism (30) is arranged between the position-limit mechanism and cylinder body (3)；
Further, the Self-resetting cylinder also includes：Cylinder (10) is sealed, the sealing cylinder (10) is set in the spring reset
On the outside of mechanism (30), spring cylinder piston (7) external diameter phase of the internal diameter and the spring return mechanism (30) of the sealing cylinder (10)
Should, make the spring cylinder piston (7) cylindrical and be bonded with sealing cylinder (10) inwall, the side of the sealing cylinder (10) goes out with described pair
Bar cylinder (20) is fixedly connected；
Further, the spring of the spring return mechanism (30) is double pocketed springs；
Further, balance through hole (K3) is opened up on the spring cylinder piston (7)；
Further, the balance through hole (K3) is uniformly distributed along spring cylinder piston (7) radial circumference；
Further, sliding bearing (16) is also set up in the piston hole of double rod cylinders (20) and the sealing cylinder (10)；
Further, the Self-resetting cylinder also includes：Damping ring (23), the damping ring (23) are fixed on double rod gas
On the outside of the piston hole of cylinder (20) inner chamber.
2. Self-resetting cylinder according to claim 1, upper side and the spring cylinder cap (11) of the cylinder upper end cover (5)
Downside includes corresponding annular groove (C1, C2), and the annular groove (C1, C2) is corresponding to the external diameter of the sealing cylinder (10), makes
The both ends of the sealing cylinder (10) are assemblied in the annular groove and the spring cylinder cap (11) of the upper side of the cylinder upper end cover (5)
Downside annular groove in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410081495.5A CN104895867B (en) | 2014-03-06 | 2014-03-06 | self-resetting cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410081495.5A CN104895867B (en) | 2014-03-06 | 2014-03-06 | self-resetting cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104895867A CN104895867A (en) | 2015-09-09 |
| CN104895867B true CN104895867B (en) | 2018-01-05 |
Family
ID=54028745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410081495.5A Active CN104895867B (en) | 2014-03-06 | 2014-03-06 | self-resetting cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895867B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240596A (en) * | 2015-10-12 | 2016-01-13 | 罗普阀业（宜兴）有限公司 | Aluminum-alloy straight-stoke piston type pneumatic actuator |
| CN105665973B (en) * | 2016-03-10 | 2018-02-13 | 佛山华盾人防工程有限公司 | Pneumatic expander and the pre-buried pipeline of people's air defense ventilation using it rapidly and efficiently |
| CN106975785A (en) * | 2017-05-01 | 2017-07-25 | 桐乡市百宝电子商务有限公司 | A kind of bar cutter device |
| CN108656024B (en) * | 2018-05-18 | 2020-09-08 | 武汉三江航天远方科技有限公司 | Spring cylinder spring and assembling tool and method thereof |
| CN109322871A (en) * | 2018-11-30 | 2019-02-12 | 湖南协力液压有限公司 | A kind of hydraulic cylinder that can automatically reset |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3481526B2 (en) * | 1999-11-08 | 2003-12-22 | 三星電機株式会社 | Drive cylinder |
| CN201241890Y (en) * | 2008-08-19 | 2009-05-20 | 孙光锋 | Single-acting multiplying-power air cylinder |
| CN201779090U (en) * | 2010-08-30 | 2011-03-30 | 杭州小森机械制造有限公司 | Cutting oil cylinder, steel bar cutting machine and steel bar straightening and cutting machine |
| CN203023166U (en) * | 2012-12-23 | 2013-06-26 | 湖南明鼎科技有限公司 | Cylinder for third rail current collector |
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2014
- 2014-03-06 CN CN201410081495.5A patent/CN104895867B/en active Active
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| Publication number | Publication date |
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| CN104895867A (en) | 2015-09-09 |
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