CN104895866A - Equal-speed equal-stroke high frequency response double-acting cylinder - Google Patents
Equal-speed equal-stroke high frequency response double-acting cylinder Download PDFInfo
- Publication number
- CN104895866A CN104895866A CN201510342138.4A CN201510342138A CN104895866A CN 104895866 A CN104895866 A CN 104895866A CN 201510342138 A CN201510342138 A CN 201510342138A CN 104895866 A CN104895866 A CN 104895866A
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- CN
- China
- Prior art keywords
- piston rod
- cylinder body
- group
- ring
- end cap
- 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.)
- Pending
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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
- F15B15/08—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
- F15B15/1438—Cylinder to end cap assemblies
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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
- F15B15/08—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
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses an equal-speed equal-stroke high frequency response double-acting cylinder which comprises a cylinder body, a piston rod, an end cover and three low-friction movable seal groups, wherein the piston rod is used with the cylinder body, and the end cover is sealed at one end of the cylinder body. One end of the piston rod penetrates the end cover and extends out of the cylinder body, and equal-diameter outer extension rod structures are arranged at two ends of the piston rod. A limit ring is arranged on the inner wall of the cylinder body, a positioning ring is arranged on the outer wall of the piston rod and limited between the limit ring and the end cover by the limit ring, and a guide ring contacting with the inner wall of the cylinder body is arranged on the positioning ring. The limit ring, the guide ring and the end cover form a triple concentric structure of the piston rod. The first low-friction movable seal group is fixed on the inner wall of the limit ring and positioned between the piston rod and the limit ring, the second low-friction movable seal group is fixed on the outer wall of the guide ring and positioned between the cylinder body and the guide ring, and the third low-friction movable seal group is fixed on the end cover and positioned between the piston rod and the end cover.
Description
Technical field
The present invention relates to a kind of oil cylinder, particularly relate to the distance high frequency sound two-way cylinders such as a kind of constant speed.
Background technique
Existing double-act-ing hydraulic J-Horner adopts two-stage to lead with one heart usually, and this hydraulic jack only having the concentric guide structure of two-stage not only resistance to motion is large, and kinematic accuracy is also not high, can not meet the operating mode high to dynamic response requirement.
Summary of the invention
In view of this, the invention provides the distance high frequency sound two-way cylinders such as a kind of constant speed, solve the hydraulic jack operating mode high to to-and-fro motion dynamic response requirement, i.e. the output requirement of constant speed, equal pressure in the positive and negative both direction of hydraulic jack, and the high frequency sound dynamic characteristic of reciprocating piston.
The present invention is achieved by the following technical solutions: the distance high frequency sound two-way cylinders such as a kind of constant speed, it comprise cylinder body (1), with cylinder body (1) with the use of piston rod (2), the end cap (8) be enclosed on cylinder body (1) one end, one end of piston rod (2) extends in cylinder body (1) outward through end cap (8); Wherein,
Piston rod (2) two ends adopt isodiametric outer boom structure; The inwall of cylinder body (1) is provided with limited ring (6), the outer wall of piston rod (2) is provided with positioning ring (7), limited ring (6) between limited ring (6) and end cap (8), positioning ring (7) is provided with the guide ring (9) with cylinder body (1) contact internal walls by spacing for positioning ring (7); Limited ring (6), guide ring (9), end cap (8) form three grades of concentric structures of piston rod (2);
The distance high frequency sound two-way cylinders such as described constant speed also comprise first group low friction motive sealing group (3), second group low friction motive sealing group (4), the 3rd group low friction motive sealing group (5); The inwall that first group low friction motive sealing group (3) is fixed on limited ring (6) is positioned between piston rod (2) and limited ring (6), the outer wall that second group low friction motive sealing group (4) is fixed on guide ring (9) is positioned between cylinder body (1) and guide ring (9), and it is upper and be positioned between piston rod (2) and end cap (8) that the 3rd group low friction motive sealing group (5) is fixed on end cap (8).
As the further improvement of such scheme, piston rod (2) is hollow structure.
As the further improvement of such scheme, between end cap (8) and cylinder body (1), be provided with low friction static seal group (10).
Preferably, low friction static seal group (10) can be fixed on end cap (8), is positioned between end cap (8) and cylinder body (1).
By the driving of the distance high frequency sound two-way cylinders (referring generally to hydraulic jack) such as constant speed of the present invention, the output requirement of the two-way constant-speed to objective body, equal pressure can be realized, be particularly suitable for the operating mode that to-and-fro motion is high to dynamic response requirement.Piston rod of the present invention (2) adopts three grades of concentric guide structures, not only achieves the output requirement of the two-way constant-speed of hydraulic jack, equal pressure, also substantially increases the dynamic response performance of hydraulic jack and kinematic accuracy etc.
Accompanying drawing explanation
The structural representation of the distance high frequency sound two-way cylinders such as the constant speed that Fig. 1 provides for present pre-ferred embodiments.
primary symbols explanation
Cylinder body 1 piston rod 2
First group low friction motive sealing group, 3 second groups low friction motive sealing groups 4
3rd group low friction motive sealing group 5 limited ring 6
Positioning ring 7 end cap 8
Guide ring 9 low friction static seal group 10
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, the distance high frequency sound two-way cylinders such as constant speed comprise cylinder body 1, with cylinder body 1 with the use of piston rod 2, be enclosed in the low friction motive sealing group of end cap 8, first group 3, second group low friction motive sealing group the 4, the 3rd group of low friction motive sealing group 5 on cylinder body 1 one end, low friction static seal group 10.
One end of piston rod 2 extends in outside cylinder body 1 through end cap 8, and the other end of piston rod 2 extends to the end of cylinder body 1.Piston rod 2 can be hollow structure, and piston rod 2 adopts three grades of concentric guide structures.The inwall of cylinder body 1 is provided with limited ring 6, and the outer wall of piston rod 2 is provided with positioning ring 7, and limited ring 6 between limited ring 6 and end cap 8, positioning ring 7 is provided with the guide ring 9 with cylinder body 1 contact internal walls by spacing for positioning ring 7.Limited ring 6, guide ring 9, end cap 8 form three grades of concentric structures of piston rod 2.
On the inwall that first group low friction motive sealing group 3 is fixed on limited ring 6 and between piston rod 2 and limited ring 6, on the outer wall that second group low friction motive sealing group 4 is fixed on guide ring 9 and between cylinder body 1 and guide ring 9, the 3rd group low friction motive sealing group 5 to be fixed on end cap 8 and between piston rod 2 and end cap 8.Low friction static seal group 10 is provided with between end cap 8 and cylinder body 1.Low friction static seal group 10 can be fixed on end cap 8, between end cap 8 and cylinder body 1.
The present invention, by the equivalent arrangements of piston rod 2 in positive and negative both direction, achieves the kinematic parameter that piston rod 2 positive and negative direction is equal, meets the output requirement of hydraulic jack two-way constant-speed, equal pressure; Adopt the piston rod 2 of three grades of concentric structures in addition, greatly improve the accuracy of alignment of piston rod 2, coordinate low friction motive sealing group, achieve the dynamic characteristic of piston high frequency sound.
In sum, beneficial effect of the present invention is as follows:
1, piston rod 2 adopts hollow structure, greatly alleviates the quality of moving body, is conducive to improving the reciprocating flexibility of piston rod 2;
2, piston rod 2 adopts three grades of concentric structures, greatly improves the accuracy of alignment of piston rod 2 on axis of movement, is conducive to improving the reciprocating axial precision of piston rod 2, thus improves the dynamic characteristic of piston rod 2;
3. adopt three groups low friction motive sealing groups, greatly alleviate the starting friction power of piston rod 2, be conducive to improving the piston rod 2 reciprocating response time;
4. piston rod 2 two ends adopt isodiametric outer boom structure, thus make reciprocating speed, driving force all equal, and namely reciprocatory movement has equivalent dynamic and static state characteristic, realize the characteristics such as full bi-directional and export.
Above content is in conjunction with the detailed description made for the present invention of concrete accompanying drawing, can not assert that the present invention specifically implements to be only limitted to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, some simple replacements and change can also be made, all should be considered as belonging to the invention protection domain that the present invention is determined by submitted to claims.
Claims (4)
1. the distance high frequency sound two-way cylinder such as constant speed, it comprise cylinder body (1), with cylinder body (1) with the use of piston rod (2), the end cap (8) be enclosed on cylinder body (1) one end, one end of piston rod (2) extends in cylinder body (1) outward through end cap (8); It is characterized in that:
Piston rod (2) two ends adopt isodiametric outer boom structure; The inwall of cylinder body (1) is provided with limited ring (6), the outer wall of piston rod (2) is provided with positioning ring (7), limited ring (6) between limited ring (6) and end cap (8), positioning ring (7) is provided with the guide ring (9) with cylinder body (1) contact internal walls by spacing for positioning ring (7); Limited ring (6), guide ring (9), end cap (8) form three grades of concentric structures of piston rod (2);
The distance high frequency sound two-way cylinders such as described constant speed also comprise first group low friction motive sealing group (3), second group low friction motive sealing group (4), the 3rd group low friction motive sealing group (5); The inwall that first group low friction motive sealing group (3) is fixed on limited ring (6) is positioned between piston rod (2) and limited ring (6), the outer wall that second group low friction motive sealing group (4) is fixed on guide ring (9) is positioned between cylinder body (1) and guide ring (9), and it is upper and be positioned between piston rod (2) and end cap (8) that the 3rd group low friction motive sealing group (5) is fixed on end cap (8).
2. the distance high frequency sound two-way cylinder such as constant speed as claimed in claim 1, is characterized in that: piston rod (2) is hollow structure.
3. the distance high frequency sound two-way cylinder such as constant speed as claimed in claim 1, is characterized in that: be provided with low friction static seal group (10) between end cap (8) and cylinder body (1).
4. the distance high frequency sound two-way cylinder such as constant speed as claimed in claim 3, is characterized in that: low friction static seal group (10) can be fixed on end cap (8), is positioned between end cap (8) and cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510342138.4A CN104895866A (en) | 2015-06-18 | 2015-06-18 | Equal-speed equal-stroke high frequency response double-acting cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510342138.4A CN104895866A (en) | 2015-06-18 | 2015-06-18 | Equal-speed equal-stroke high frequency response double-acting cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104895866A true CN104895866A (en) | 2015-09-09 |
Family
ID=54028744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510342138.4A Pending CN104895866A (en) | 2015-06-18 | 2015-06-18 | Equal-speed equal-stroke high frequency response double-acting cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN104895866A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034793A (en) * | 1988-02-06 | 1989-08-16 | 中南工业大学 | Stepless frequency-adjusting and cone valve controlled hydraulic shocking device |
| JP2006105315A (en) * | 2004-10-07 | 2006-04-20 | Koyo Kogyo Kk | Multi-stage hydraulic jack |
| CN201543686U (en) * | 2009-10-26 | 2010-08-11 | 浙江双飞无油轴承有限公司 | Two-way horizontal type pounding machine special for wrapped bearing bush |
| CN201587839U (en) * | 2009-12-28 | 2010-09-22 | 江阴市华澄特种机械工程有限公司 | Steering oil cylinder of bridge-expanding self-propelled type aerial operating platform with steering pull rods |
| CN102734253A (en) * | 2012-07-11 | 2012-10-17 | 银川市恒益达机械有限公司 | Double feed servo hydraulic cylinder |
| CN202867395U (en) * | 2012-08-14 | 2013-04-10 | 广州机械科学研究院有限公司 | Low-friction high-frequency sound hydraulic cylinder |
| CN203081896U (en) * | 2013-02-28 | 2013-07-24 | 韶关市伟光液压油缸有限公司 | Servo hydrocylinder |
| CN203176050U (en) * | 2013-01-29 | 2013-09-04 | 滁州金科机械模具制造有限公司 | Piston type oil cylinder structure |
-
2015
- 2015-06-18 CN CN201510342138.4A patent/CN104895866A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034793A (en) * | 1988-02-06 | 1989-08-16 | 中南工业大学 | Stepless frequency-adjusting and cone valve controlled hydraulic shocking device |
| JP2006105315A (en) * | 2004-10-07 | 2006-04-20 | Koyo Kogyo Kk | Multi-stage hydraulic jack |
| CN201543686U (en) * | 2009-10-26 | 2010-08-11 | 浙江双飞无油轴承有限公司 | Two-way horizontal type pounding machine special for wrapped bearing bush |
| CN201587839U (en) * | 2009-12-28 | 2010-09-22 | 江阴市华澄特种机械工程有限公司 | Steering oil cylinder of bridge-expanding self-propelled type aerial operating platform with steering pull rods |
| CN102734253A (en) * | 2012-07-11 | 2012-10-17 | 银川市恒益达机械有限公司 | Double feed servo hydraulic cylinder |
| CN202867395U (en) * | 2012-08-14 | 2013-04-10 | 广州机械科学研究院有限公司 | Low-friction high-frequency sound hydraulic cylinder |
| CN203176050U (en) * | 2013-01-29 | 2013-09-04 | 滁州金科机械模具制造有限公司 | Piston type oil cylinder structure |
| CN203081896U (en) * | 2013-02-28 | 2013-07-24 | 韶关市伟光液压油缸有限公司 | Servo hydrocylinder |
Non-Patent Citations (2)
| Title |
|---|
| 孔凌嘉等: "《机械设计》", 31 August 2013 * |
| 山东工学院射流组: "《液压射流技术》", 30 April 1973 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 230000 Hefei economic and Technological Development Zone, Anhui, Ziyun Applicant after: Hefei forging intelligent manufacturing Limited by Share Ltd Address before: 230000 Hefei economic and Technological Development Zone, Anhui, Ziyun Applicant before: Hefei Metalforming Machine Tool Co., Ltd. |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150909 |
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| RJ01 | Rejection of invention patent application after publication |