CN105090160A - Double-acting piston type hydraulic cylinder - Google Patents
Double-acting piston type hydraulic cylinder Download PDFInfo
- Publication number
- CN105090160A CN105090160A CN201510635701.7A CN201510635701A CN105090160A CN 105090160 A CN105090160 A CN 105090160A CN 201510635701 A CN201510635701 A CN 201510635701A CN 105090160 A CN105090160 A CN 105090160A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- cylinder barrel
- double
- guide pin
- pin bushing
- 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
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
- F15B15/08—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
- F15B15/1433—End caps
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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
- F15B15/1457—Piston rods
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a double-acting piston type hydraulic cylinder and relates to the technical field of hydraulic instruments. The double-acting piston type hydraulic cylinder comprises a cylinder barrel and a piston rod. A piston rod guide sleeve is arranged between the inner wall of the cylinder barrel and the piston rod. A sealing ring I and a guide belt are arranged between the piston rod guide sleeve and the piston rod. A sealing ring II is arranged between the piston rod guide sleeve and the inner wall of the cylinder barrel. The piston rod guide sleeve is fixedly connected with an end cover arranged at the upper portion of the cylinder barrel through a bolt. A spring steel cable baffle ring is arranged between the piston rod guide sleeve and the cylinder barrel. A dustproof ring is arranged between the end cover and the piston rod. The sealing ring II is an O-shaped sealing ring. The problem that a double-acting piston type hydraulic cylinder is difficult to machine and assemble can be solved through the double-acting piston type hydraulic cylinder.
Description
Technical field
The present invention relates to hydraulic pressure apparatus technical field, especially a kind of piston-type hydraulic cylinder.
Background technique
A kind of piston-type hydraulic cylinder is as shown in Figure 1 had in various types of double-acting hydraulic cylinder, comprise cylinder barrel 9 and piston rod 10, on cylinder barrel 9 top, be provided with between piston rod 10 with cylinder barrel 9 and be connected guide pin bushing 1, connecting guide pin bushing 1 adopts thread type or welding type to connect with the connection of cylinder barrel 9, because cylinder barrel 9 barrel is thinner, connects guide pin bushing 1 and adopts thread type join strength low with cylinder barrel 9, easily cause loosening, be also easy to scratch Sealing thus cause the interior leakage of oil cylinder.Adopt welding type to be connected if connect guide pin bushing 1 with cylinder barrel 9, owing to there is welding stress, distortion is large, easily damages, also causes maintenance difficult because of non-dismountable, cause the oil cylinder life-span low; Connect guide pin bushing 1 is overall processing simultaneously, and needs machining screw, and the precision of screw thread process and assembling all requires higher, causes processing and assembles all more difficult.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of double-acting piston oil hydraulic cylinder, and it can solve the processing of double-acting piston oil hydraulic cylinder and the problem of assembling difficulty.
In order to solve the problem, technological scheme of the present invention is: this double-acting piston oil hydraulic cylinder comprises cylinder barrel and piston rod, between described inner wall of cylinder and described piston rod, be provided with piston rod guide pin bushing, between described piston rod guide pin bushing and described piston rod, be provided with seal ring I and guidance tape; Seal ring II is provided with between described piston rod guide pin bushing and described inner wall of cylinder; Described piston rod guide pin bushing is fixedly connected with the end cap being arranged on described cylinder barrel top by bolt; Back-up ring is provided with between described piston rod guide pin bushing and described cylinder barrel; Dust ring is provided with between described end cap and described piston rod.
In technique scheme, more specifically scheme can also be: described back-up ring is Spring Steel Wire back-up ring; Described seal ring II is O RunddichtringO.
Owing to adopting technique scheme, the present invention has following beneficial effect:
1, former connection guide pin bushing is changed into after end cap and piston rod guide pin bushing are fastenedly connected by hexagon socket head cap screw and being fixed by Spring Steel Wire back-up ring and cylinder barrel by structure of the present invention, without the need to be threaded or weld, compact structure, easy processing, assembling simply, can be enhanced productivity greatly.
2, present invention employs Spring Steel Wire back-up ring and cylinder barrel is fixed, structure stability is strong.During assembling, can not damage Sealing, avoid the form be threaded connection, easy scratch Sealing causes the problem of the interior leakage of oil cylinder; Can greatly improve the quality of products.
3, end cap of the present invention and piston rod guide pin bushing do not need machining screw, and avoid the various problem such as processing difficulties and assembly precision because accuracy of thread causes, total is easy to process, easily assembles.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art double-acting piston oil hydraulic cylinder;
Fig. 2 is structural representation of the present invention.
Number in the figure is expressed as: 1, connect guide pin bushing, 2, bolt, 3, dust ring, 4, back-up ring, 5, piston rod guide pin bushing, 6, seal ring I, 7, seal ring II, 8, guidance tape, 9, cylinder barrel, 10, piston rod, 11, end cap.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the structural representation of a kind of double-acting piston oil hydraulic cylinder of prior art, comprise cylinder barrel 9 and piston rod 10, on cylinder barrel 9 top, be provided with between piston rod 10 with cylinder barrel 9 and be connected guide pin bushing 1, whole connection guide pin bushing 1 adopts with the connection of cylinder barrel 9 and is threaded, connect between guide pin bushing 1 top and piston rod 10 and be provided with dust ring 3, connect between guide pin bushing 1 and piston rod 10 and be provided with seal ring I 6 and guidance tape 8; Connect between guide pin bushing 1 and cylinder barrel 9 inwall and be provided with seal ring II 7; This thread connecting mode intensity is low, easily causes loosening, is also easy to scratch Sealing thus causes the interior leakage of oil cylinder; Because connection guide pin bushing 1 is overall processing, and need machining screw, the precision of screw thread process and assembling all requires higher, causes processing and assembles all more difficult.
Fig. 2 is double-acting piston oil hydraulic cylinder of the present invention, comprises cylinder barrel 9 and piston rod 10, is provided with piston rod guide pin bushing 5 between cylinder barrel 9 upper inside wall and piston rod 10, is provided with seal ring I 6 and guidance tape 8 between piston rod guide pin bushing 5 and piston rod 10; Seal ring II 7 is provided with between piston rod guide pin bushing 5 and cylinder barrel 9 inwall; Seal ring II 7 is O RunddichtringO; Piston rod guide pin bushing 5 is fixedly connected with the end cap 11 being arranged on cylinder barrel 9 top with compression spring by bolt 2; Be provided with back-up ring 4 between piston rod guide pin bushing 5 and cylinder barrel 9, back-up ring 4 is stuck between piston rod guide pin bushing 5 with cylinder barrel 9 and works the effect of being fixedly connected with, and this enforcement guide ring 4 is Spring Steel Wire back-up ring; Dust ring 3 is provided with between end cap 11 and piston rod 10.
Claims (2)
1. a double-acting piston oil hydraulic cylinder, comprise cylinder barrel (9) and piston rod (10), between described cylinder barrel (9) inwall and described piston rod (10), be provided with piston rod guide pin bushing (5), between described piston rod guide pin bushing (5) and described piston rod (10), be provided with seal ring I (6) and guidance tape (8); Seal ring II (7) is provided with between described piston rod guide pin bushing (5) and described cylinder barrel (9) inwall; It is characterized in that: described piston rod guide pin bushing (5) is fixedly connected with the end cap (11) being arranged on described cylinder barrel (9) top by bolt (2); Back-up ring (4) is provided with between described piston rod guide pin bushing (5) and described cylinder barrel (9); Dust ring (3) is provided with between described end cap (11) and described piston rod (10).
2. double-acting piston oil hydraulic cylinder according to claim 1, is characterized in that: described back-up ring (4) is Spring Steel Wire back-up ring; Described seal ring II (7) is O RunddichtringO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510635701.7A CN105090160A (en) | 2015-09-30 | 2015-09-30 | Double-acting piston type hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510635701.7A CN105090160A (en) | 2015-09-30 | 2015-09-30 | Double-acting piston type hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090160A true CN105090160A (en) | 2015-11-25 |
Family
ID=54571266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510635701.7A Pending CN105090160A (en) | 2015-09-30 | 2015-09-30 | Double-acting piston type hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090160A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202016007691U1 (en) * | 2016-12-21 | 2018-03-22 | Bümach Engineering International B.V. | Schraubarbeitszylinder |
| EP3252319B1 (en) * | 2016-06-03 | 2021-03-03 | Ognibene Power S.P.A. | Method of assembling a piston-cylinder group through low temperature welding |
| WO2024104517A1 (en) * | 2022-11-14 | 2024-05-23 | Bümach Engineering International B. V. | Working cylinder |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4433649A1 (en) * | 1994-09-21 | 1995-11-02 | Fichtel & Sachs Ag | Assembling piston=cylinder unit for damper |
| CN202082195U (en) * | 2011-06-07 | 2011-12-21 | 临沂金利液压科技有限公司 | Guide device of hydraulic cylinder |
| CN202176575U (en) * | 2011-07-31 | 2012-03-28 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Novel steering oil cylinder with end cover improved structure |
| CN202301268U (en) * | 2011-10-19 | 2012-07-04 | 南京德凡传动设备有限公司 | Hydraulic cylinder |
| CN102852902A (en) * | 2012-09-20 | 2013-01-02 | 湖南特力液压有限公司 | Guide sleeve mounting structure of driving cylinder, driving cylinder and blocking key |
| CN102889265A (en) * | 2012-10-18 | 2013-01-23 | 徐州永佳液压设备有限公司 | Hydraulic cylinder with magnetic buffer structure |
| CN202811633U (en) * | 2012-09-03 | 2013-03-20 | 山东隆源液压科技有限公司 | Lift cylinder for multifunctional vehicle |
| CN202811629U (en) * | 2012-09-03 | 2013-03-20 | 山东隆源液压科技有限公司 | Supporting-leg oil cylinder of concrete pump truck |
| CN203189389U (en) * | 2013-03-19 | 2013-09-11 | 厦门银华机械有限公司 | Fixing structure of hydraulic oil cylinder guide sleeves and baffle rings |
| CN203822746U (en) * | 2014-04-29 | 2014-09-10 | 山东德方液压机械股份有限公司 | Hydraulic lifting oil cylinder for containers |
| CN104454757A (en) * | 2014-11-12 | 2015-03-25 | 三一重型装备有限公司 | Hydraulic cylinder and cylinder cover structure thereof |
-
2015
- 2015-09-30 CN CN201510635701.7A patent/CN105090160A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4433649A1 (en) * | 1994-09-21 | 1995-11-02 | Fichtel & Sachs Ag | Assembling piston=cylinder unit for damper |
| CN202082195U (en) * | 2011-06-07 | 2011-12-21 | 临沂金利液压科技有限公司 | Guide device of hydraulic cylinder |
| CN202176575U (en) * | 2011-07-31 | 2012-03-28 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Novel steering oil cylinder with end cover improved structure |
| CN202301268U (en) * | 2011-10-19 | 2012-07-04 | 南京德凡传动设备有限公司 | Hydraulic cylinder |
| CN202811633U (en) * | 2012-09-03 | 2013-03-20 | 山东隆源液压科技有限公司 | Lift cylinder for multifunctional vehicle |
| CN202811629U (en) * | 2012-09-03 | 2013-03-20 | 山东隆源液压科技有限公司 | Supporting-leg oil cylinder of concrete pump truck |
| CN102852902A (en) * | 2012-09-20 | 2013-01-02 | 湖南特力液压有限公司 | Guide sleeve mounting structure of driving cylinder, driving cylinder and blocking key |
| CN102889265A (en) * | 2012-10-18 | 2013-01-23 | 徐州永佳液压设备有限公司 | Hydraulic cylinder with magnetic buffer structure |
| CN203189389U (en) * | 2013-03-19 | 2013-09-11 | 厦门银华机械有限公司 | Fixing structure of hydraulic oil cylinder guide sleeves and baffle rings |
| CN203822746U (en) * | 2014-04-29 | 2014-09-10 | 山东德方液压机械股份有限公司 | Hydraulic lifting oil cylinder for containers |
| CN104454757A (en) * | 2014-11-12 | 2015-03-25 | 三一重型装备有限公司 | Hydraulic cylinder and cylinder cover structure thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3252319B1 (en) * | 2016-06-03 | 2021-03-03 | Ognibene Power S.P.A. | Method of assembling a piston-cylinder group through low temperature welding |
| DE202016007691U1 (en) * | 2016-12-21 | 2018-03-22 | Bümach Engineering International B.V. | Schraubarbeitszylinder |
| US10865815B2 (en) | 2016-12-21 | 2020-12-15 | Buemach Engineering International B.V. | Screw-threaded working cylinder |
| WO2024104517A1 (en) * | 2022-11-14 | 2024-05-23 | Bümach Engineering International B. V. | Working cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151125 |