CN108035935A - A kind of electrohydraulic actuator buffer piston pushing meanss - Google Patents
A kind of electrohydraulic actuator buffer piston pushing meanss Download PDFInfo
- Publication number
- CN108035935A CN108035935A CN201711413210.3A CN201711413210A CN108035935A CN 108035935 A CN108035935 A CN 108035935A CN 201711413210 A CN201711413210 A CN 201711413210A CN 108035935 A CN108035935 A CN 108035935A
- Authority
- CN
- China
- Prior art keywords
- piston
- oil pocket
- axle sleeve
- damper
- buffer
- 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.)
- Granted
Links
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
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
-
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
- F15B15/227—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having an auxiliary cushioning piston within the main piston or the cylinder end face
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a kind of electrohydraulic actuator buffer piston pushing meanss.Including piston cylinder（1）, piston cylinder（1）Top be equipped with seal receptacle（2）, seal receptacle（2）Lower section is equipped with buffer gear（3）, buffer gear（3）Lower section is equipped with can be along piston cylinder（1）The piston rod of axis direction movement（4）；The buffer gear（3）Including axle sleeve（31）, axle sleeve（31）With piston cylinder（1）It is fixedly connected, axle sleeve（31）Inside it is connected with damper piston（32）；The seal receptacle（2）It is equipped with runner A（21）, the damper piston（32）It is above-mentioned to be equipped with runner B（321）；The seal receptacle（2）With damper piston（32）Between be equipped with oil pocket a（5）, damper piston（32）With piston rod（4）Between be equipped with oil pocket c（7）.The present invention has the characteristics that simple in structure and prolongs the service life.
Description
Technical field
The present invention relates to a kind of electrohydraulic actuator, particularly a kind of electrohydraulic actuator buffer piston pushing meanss.
Background technology
Reciprocating compressor is a kind of positive displacement compressor, is widely used in refining because its pressure at expulsion is high and stability is good
In oil and chemical industry.The rated discharge amount of compressor is basically unchanged, but due to technological process, raw material type and market
The change of demand requires that the capacity of compressor can be adjusted interior in a big way.To meet the adjusting of compressor air-discharging amount
It is required that conventionally employed is bypass adjusting method.This method have simple in structure, flow can consecutive variations, pressure ratios at different levels keep
The advantages that constant, but the work done during compression of excessive gas can be all lost, and the gas to flow back be by compressed high-temperature gas,
Cooling water cooling is also used, therefore energy consumption is huge, it is costly, in view of this, to make compressor air-discharging amount adapt to air consumption, when
Preceding adjusting method --- open-top air inlet valve regulation method is increasingly becoming development trend, its principle be by control the opening of air valve and
Shut-in time changes the decrement of gas in each stroke cycle of piston, so as to fulfill compressor air-discharging amount in 0-100% scopes
It is interior stepless adjustable.
But since the major function of the adjusting method switches for quick oil circuit, and oil pressure is delivered in piston apparatus
Promote piston rod carry-out bit in-migration to realize to open and close the quick of valve, produced between the promotion of piston rod and component
Be rigid contact, without buffering effect, serious damage can be caused to piston and component, influence the service life of valve.
The content of the invention
It is an object of the present invention to provide a kind of electrohydraulic actuator buffer piston pushing meanss.The present invention has knot
The characteristics of structure is simple and prolongs the service life.
Technical scheme：A kind of electrohydraulic actuator buffer piston pushing meanss, including piston cylinder, piston cylinder
Top be equipped with seal receptacle, be equipped with buffer gear below seal receptacle, equipped with can be transported along piston cylinder axis direction below buffer gear
Dynamic piston rod；The buffer gear includes axle sleeve, and axle sleeve is fixedly connected with piston cylinder, and buffering is connected with axle sleeve and is lived
Plug；The seal receptacle is equipped with runner A, and the damper piston is above-mentioned to be equipped with runner B；The seal receptacle and damper piston
Between be equipped with oil pocket a, oil pocket c is equipped between damper piston and piston rod.
Foregoing electrohydraulic actuator is additionally provided with gasket with buffer piston pushing meanss below the damper piston；
Oil pocket b is equipped between damper piston and gasket, oil pocket c is equipped between gasket and piston rod.
For foregoing electrohydraulic actuator with buffer piston pushing meanss, the middle part of the runner B is equipped with throttle orifice.
For foregoing electrohydraulic actuator with buffer piston pushing meanss, the axle sleeve is equipped with can be along perpendicular to axle sleeve
The steel ball of axis direction movement, steel ball side are contacted with damper piston side wall, and opposite side is equipped with return spring.
Compared with prior art, the present invention sets buffer gear, seal receptacle and buffer gear between seal receptacle and piston rod
Damper piston between be equipped with oil pocket a, oil pocket b, the gasket of buffer gear and work are equipped between the damper piston and gasket of buffer gear
Oil pocket c is equipped between stopper rod；When piston rod is promoted, hydraulic oil enters oil pocket a (oil pocket a is not full of at this time) by runner A, one
Liquid separation pressure oil is used to promote damper piston to pass through damper piston along axle sleeve axial-movement, another part hydraulic oil in oil pocket a
Runner B enters oil pocket c and promotes piston rod output,；At this time since the hydraulic oil entered into oil pocket c is a small amount of, cause piston
It is slow that bar stretches out speed so that piston rod and kinetic energy during component rigid contact are small, and then reduce piston rod to auxiliary section
The impact force of part, extends the service life of equipment；After hydraulic oil is full of oil pocket a, from runner A enter hydraulic oil all into
Enter oil pocket c, piston rod is contacted with component at this time and hydraulic thrust reaches maximum, and promotes cooperation to load.
The present invention is additionally provided with gasket below damper piston；Oil pocket b, gasket and piston rod are equipped between damper piston and gasket
Between be equipped with oil pocket c；During piston rod return, runner A is hydraulic oil outlet at this time, and whole piston cylinder assembly does not have hydraulic oil entrance,
Only it is subject to load reaction to act on；, the hydraulic oil of oil pocket c is largely introduced into oil pocket b and promotes the reverse return of damper piston, the process
So that being subject to the slow return of piston rod of load reaction, piston rod returning quickly under load reaction effect is avoided, to piston rod
And piston cylinder causes excessive mechanical damage, extend the service life of device.
The present invention is equipped with throttle orifice at the middle part of runner B；So that hydraulic oil oil pressure when flowing through runner B is increased, into
And hydraulic oil is rapidly filled with oil pocket a, oil pocket b or oil pocket c, and then enable the both ends of damper piston to quickly form oil pressure poor
Kinetic energy when forming buffering, and then avoiding piston rod and component rigid contact is excessive or avoids piston rod in load reaction
The lower mechanical damage caused by returning quickly of effect, extends the service life of device.
The present invention is equipped with axle sleeve can be along the steel ball moved perpendicular to axle sleeve axis direction, steel ball side and damper piston
Side wall contacts, and opposite side is equipped with return spring；The structure cause damper piston along during axle sleeve axial-movement, it is necessary to overcome steel ball with
Spacing power between return spring, the spacing power can further reduce the movement velocity of damper piston, further, reduce work
Kinetic energy when stopper rod and component rigid contact and piston rod returning quickly under load reaction effect is prevented, and then extension
The service life of device.
It can be seen from the above, the buffer gear of the present invention has the advantages of simple structure and easy realization, cost is low.
To sum up, the present invention has the characteristics that simple in structure and prolongs the service life.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Mark in attached drawing for：1- piston cylinders, 2- seal receptacles, 21- runners A, 3- buffer gear, 31- axle sleeves, 32- bufferings
Piston, 321- runners B, 322- throttle orifice, 33- gaskets, 4- piston rods, 5- oil pockets a, 6- oil pocket b, 7- oil pocket c, 8- steel ball, 9-
Return spring.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.A kind of electrohydraulic actuator buffer piston pushing meanss, are formed as shown in Figure 1, including piston cylinder 1,
The top of piston cylinder 1 is equipped with seal receptacle 2, and the lower section of seal receptacle 2 is equipped with buffer gear 3, and the lower section of buffer gear 3 is equipped with can be along piston cylinder
The piston rod 4 of 1 axis direction movement；The buffer gear 3 includes axle sleeve 31, and axle sleeve 31 is fixedly connected with piston cylinder 1, axle sleeve
Damper piston 32 is connected with 31；The seal receptacle 2 is equipped with runner A21, and the damper piston 32 is above-mentioned to be equipped with
Runner B321；Oil pocket a5 is equipped between the seal receptacle 2 and damper piston 32, oil pocket is equipped between damper piston 32 and piston rod 4
c7。
The foregoing lower section of damper piston 32 is additionally provided with gasket 33；Oil pocket b6, gasket are equipped between damper piston 32 and gasket 33
Oil pocket c7 is equipped between 33 and piston rod 4.
The middle part of foregoing runner B321 is equipped with throttle orifice 322.
Foregoing axle sleeve 31 is equipped with can be along the steel ball 8 moved perpendicular to 31 axis direction of axle sleeve, 8 side of steel ball and buffering
32 side wall of piston contacts, and opposite side is equipped with return spring 9.
When piston rod 4 is promoted, hydraulic oil enters oil pocket a5 (oil pocket a5 is not full of at this time) by runner A21, a part
Hydraulic oil is used to promote damper piston 32 to overcome the spacing power between steel ball 8 and return spring 9 along 31 axis of axle sleeve in oil pocket a5
Movement, another part hydraulic oil enter oil pocket c7 by the runner B321 of damper piston 32 and promote piston rod 4 to export；Work as hydraulic oil
After oil pocket a5, the hydraulic oil entered from runner A21 fully enters oil pocket c7, and piston rod 4 contacts simultaneously with component at this time
And hydraulic thrust reaches maximum, and cooperation is promoted to load.
During 4 return of piston rod, runner A21 is hydraulic oil outlet at this time, and whole piston cylinder assembly does not have including buffer gear
Hydraulic oil enters, and is only subject to load reaction to act on；The hydraulic oil of oil pocket c7 is largely introduced into oil pocket b6 and promotes damper piston 32
Overcome the reverse return of spacing power between steel ball 8 and return spring 9, which to be subject to the piston rod 4 of load reaction slowly to return
Position.
Claims (4)
- A kind of 1. electrohydraulic actuator buffer piston pushing meanss, it is characterised in that：Including piston cylinder（1）, piston cylinder（1）'s Top is equipped with seal receptacle（2）, seal receptacle（2）Lower section is equipped with buffer gear（3）, buffer gear（3）Lower section is equipped with can be along piston cylinder （1）The piston rod of axis direction movement（4）；The buffer gear（3）Including axle sleeve（31）, axle sleeve（31）With piston cylinder（1） It is fixedly connected, axle sleeve（31）Inside it is connected with damper piston（32）；The seal receptacle（2）It is equipped with runner A（21）, it is described Damper piston（32）It is above-mentioned to be equipped with runner B（321）；The seal receptacle（2）With damper piston（32）Between be equipped with oil pocket a（5）, Damper piston（32）With piston rod（4）Between be equipped with oil pocket c（7）.
- 2. electrohydraulic actuator according to claim 1 buffer piston pushing meanss, it is characterised in that：The buffering Piston（32）Lower section is additionally provided with gasket（33）；Damper piston（32）With gasket（33）Between be equipped with oil pocket b（6）, gasket（33）With work Stopper rod（4）Between be equipped with oil pocket c（7）.
- 3. electrohydraulic actuator according to claim 1 or 2 buffer piston pushing meanss, it is characterised in that：Described Runner B（321）Middle part be equipped with throttle orifice（322）.
- 4. electrohydraulic actuator according to claim 1 or 2 buffer piston pushing meanss, it is characterised in that：Described Axle sleeve（31）Being equipped with can be along perpendicular to axle sleeve（31）The steel ball of axis direction movement（8）, steel ball（8）Side and damper piston （32）Side wall contacts, and opposite side is equipped with return spring（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413210.3A CN108035935B (en) | 2017-12-24 | 2017-12-24 | Piston buffering pushing device for electro-hydraulic actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711413210.3A CN108035935B (en) | 2017-12-24 | 2017-12-24 | Piston buffering pushing device for electro-hydraulic actuator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035935A true CN108035935A (en) | 2018-05-15 |
| CN108035935B CN108035935B (en) | 2020-02-18 |
Family
ID=62100686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711413210.3A Active CN108035935B (en) | 2017-12-24 | 2017-12-24 | Piston buffering pushing device for electro-hydraulic actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035935B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778490A (en) * | 2019-11-11 | 2020-02-11 | 无锡康茨压缩机配件与系统有限公司 | Stepless air quantity regulating air valve operation method and hydraulic damping device thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758814A (en) * | 2013-12-31 | 2014-04-30 | 中船重工中南装备有限责任公司 | Buffer casting air cylinder |
| CN204186689U (en) * | 2014-10-14 | 2015-03-04 | 湘潭高工科技有限公司 | Oil hydraulic cylinder |
| CN204493339U (en) * | 2014-08-04 | 2015-07-22 | 唐颖达 | A kind of range-adjustable buffer plunger double-acting hydraulic cylinder |
| CN204865142U (en) * | 2015-07-09 | 2015-12-16 | 成都科力夫科技有限公司 | Compress tightly filter material's device in pressure filter |
| CN206144898U (en) * | 2016-11-02 | 2017-05-03 | 中国石油大学(华东) | Novel hydraulic cylinder |
| CN206175383U (en) * | 2016-11-08 | 2017-05-17 | 河北宣化工程机械股份有限公司 | Bull -dozer operating cylinder with buffer function |
| CN206320117U (en) * | 2016-12-29 | 2017-07-11 | 赛克思液压科技股份有限公司 | A kind of adjustable-pressure level 2 buffering overflow valve |
| CN206682075U (en) * | 2017-03-29 | 2017-11-28 | 天津鹰格尔液压缸有限公司 | A kind of differential hydro cylinder with pooling feature |
| CN206738287U (en) * | 2017-03-10 | 2017-12-12 | 富泰华工业（深圳）有限公司 | Rotary cylinder |
-
2017
- 2017-12-24 CN CN201711413210.3A patent/CN108035935B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103758814A (en) * | 2013-12-31 | 2014-04-30 | 中船重工中南装备有限责任公司 | Buffer casting air cylinder |
| CN204493339U (en) * | 2014-08-04 | 2015-07-22 | 唐颖达 | A kind of range-adjustable buffer plunger double-acting hydraulic cylinder |
| CN204186689U (en) * | 2014-10-14 | 2015-03-04 | 湘潭高工科技有限公司 | Oil hydraulic cylinder |
| CN204865142U (en) * | 2015-07-09 | 2015-12-16 | 成都科力夫科技有限公司 | Compress tightly filter material's device in pressure filter |
| CN206144898U (en) * | 2016-11-02 | 2017-05-03 | 中国石油大学(华东) | Novel hydraulic cylinder |
| CN206175383U (en) * | 2016-11-08 | 2017-05-17 | 河北宣化工程机械股份有限公司 | Bull -dozer operating cylinder with buffer function |
| CN206320117U (en) * | 2016-12-29 | 2017-07-11 | 赛克思液压科技股份有限公司 | A kind of adjustable-pressure level 2 buffering overflow valve |
| CN206738287U (en) * | 2017-03-10 | 2017-12-12 | 富泰华工业（深圳）有限公司 | Rotary cylinder |
| CN206682075U (en) * | 2017-03-29 | 2017-11-28 | 天津鹰格尔液压缸有限公司 | A kind of differential hydro cylinder with pooling feature |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778490A (en) * | 2019-11-11 | 2020-02-11 | 无锡康茨压缩机配件与系统有限公司 | Stepless air quantity regulating air valve operation method and hydraulic damping device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108035935B (en) | 2020-02-18 |
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