CN107740795B - Novel multistage hydraulic cylinder - Google Patents
Novel multistage hydraulic cylinder Download PDFInfo
- Publication number
- CN107740795B CN107740795B CN201611054329.1A CN201611054329A CN107740795B CN 107740795 B CN107740795 B CN 107740795B CN 201611054329 A CN201611054329 A CN 201611054329A CN 107740795 B CN107740795 B CN 107740795B
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- China
- Prior art keywords
- hydraulic cylinder
- sealing plate
- cylinder
- oil
- stage
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- 238000007789 sealing Methods 0.000 claims abstract description 44
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 21
- 239000010720 hydraulic oil Substances 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 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
- F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
-
- 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)
Abstract
The invention discloses a novel multi-stage hydraulic cylinder, which is characterized in that: the hydraulic cylinder comprises a cylinder body and a hydraulic cylinder group, wherein the hydraulic cylinder group is sleeved in the cylinder body, the hydraulic cylinder group comprises N-level hydraulic cylinders, and a piston rod of a previous-level hydraulic cylinder in the N-level hydraulic cylinders is a cylinder barrel of a next-level hydraulic cylinder. The bottom of the cylinder body is provided with an oil filling port, the bottom of the cylinder barrel of the N-level hydraulic cylinder is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are respectively provided with a first sealing plate (3) which is opened inwards and a second sealing plate which is opened outwards. The first sealing plate (3) and the second sealing plate are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel, and one ends of the first sealing plate and the second sealing plate are hinged with the cylinder barrel. The beneficial effects are that: by adopting the novel multi-stage hydraulic cylinder, the working stroke of the hydraulic cylinder is increased, the application range of the hydraulic cylinder is wider, low-pressure oil does not need to be injected into the multi-stage hydraulic cylinder, and the cost is saved.
Description
Technical Field
The invention relates to the field of machine manufacturing, in particular to a novel multi-stage hydraulic cylinder.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion. The device has simple structure and reliable operation. When it is used to realize reciprocating motion, it can eliminate speed reducer, and has no transmission clearance and smooth motion, so that it can be widely used in hydraulic systems of various machines.
The hydraulic cylinder is usually composed of a cylinder tube and a piston rod, into which high-pressure hydraulic oil flows, because the pressure in the cylinder tube increases, jacking up the piston rod. The working stroke of the whole hydraulic cylinder is only as long as that of the piston rod, and the piston rod cannot be made too long in order to ensure the safety and the reliability of the hydraulic cylinder, so that the hydraulic cylinder can only be used for low-rise buildings, and the application range of the hydraulic cylinder is greatly limited.
Disclosure of Invention
In order to solve the technical problems, the invention provides a novel multi-stage hydraulic cylinder, wherein a piston rod of a front-stage hydraulic cylinder is a cylinder barrel of a rear-stage hydraulic cylinder, and the stroke of the hydraulic cylinder is increased through the transmission of the multi-stage hydraulic cylinder.
The technical proposal is as follows:
A novel multistage hydraulic cylinder is characterized in that: the hydraulic cylinder comprises a cylinder body and a hydraulic cylinder group, wherein the hydraulic cylinder group is sleeved in the cylinder body and comprises N-level hydraulic cylinders, and a piston rod of a previous-level hydraulic cylinder in the N-level hydraulic cylinders is a cylinder barrel of a next-level hydraulic cylinder; n is a positive integer.
The bottom of the cylinder body is provided with an oil filling port, the bottom of the cylinder barrel of the N-level hydraulic cylinder is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are respectively provided with a first sealing plate which is opened inwards and a second sealing plate which is opened outwards;
The first sealing plate and the second sealing plate are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel, and one ends of the first sealing plate and the second sealing plate are hinged with the cylinder barrel.
By adopting the structure, after high-pressure hydraulic oil flows into the cylinder barrel, the first-stage hydraulic cylinder is jacked up, when the hydraulic pressure of the hydraulic oil reaches a certain degree, the first sealing plate can be pushed away, the high-pressure hydraulic oil flows into the next-stage hydraulic cylinder, and so on. The working stroke of the hydraulic cylinder is increased.
Still further, the first and second sealing plates are each provided with a lead block.
By adopting the structure, the dead weight of each stage of sealing plate is convenient to set. The dead weight of the sealing plate on the cylinder barrel of the previous stage is smaller than that of the sealing plate of the next stage, and the dead weight of the first sealing plate is smaller than that of the second sealing plate.
Further, a first permanent magnet and a second permanent magnet are respectively arranged around the oil inlet and the oil outlet, and the first permanent magnet and the second permanent magnet are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel.
Further, a first gasket and a second gasket are arranged around the oil inlet and the oil outlet respectively, the first gasket and the second gasket are arranged on the inner side and the outer side of the bottom of the cylinder barrel respectively, and the thickness of the first gasket and the second gasket is larger than that of the first permanent magnet and the second permanent magnet.
By adopting the structure, the gasket can prevent the sealing plate from colliding with the cylinder barrel, and can prevent the sealing plate from colliding with the permanent magnet to damage the permanent magnet.
Still further, the first and second washers are each made of an elastic material.
By adopting the steps, the elastic material can play a certain role in buffering, and the service life of the hydraulic cylinder is prolonged.
The beneficial effects are that: by adopting the novel multi-stage hydraulic cylinder, the working stroke of the hydraulic cylinder is increased, the application range of the hydraulic cylinder is wider, low-pressure oil does not need to be injected into the multi-stage hydraulic cylinder, and the cost is saved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of the structure at the oil inlet and the oil outlet.
Detailed Description
The invention is further described below with reference to examples and figures.
As shown in fig. 1 and2, the novel multi-stage hydraulic cylinder comprises a cylinder body 1 and a hydraulic cylinder group, wherein the hydraulic cylinder group is sleeved in the cylinder body 1 and comprises N-stage hydraulic cylinders, and a piston rod of a 1 st-stage hydraulic cylinder in 2-stage hydraulic cylinders is a cylinder barrel 2 of a second-stage hydraulic cylinder;
The bottom of the cylinder body 1 is provided with an oil filling port, the bottoms of cylinder barrels 2 of the 1 st and 2 nd-level hydraulic cylinders are respectively provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are respectively provided with a first sealing plate 3 which is opened inwards and a second sealing plate 4 which is opened outwards;
The first sealing plate 3 and the second sealing plate 4 are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel 2, and one ends of the first sealing plate 3 and the second sealing plate 4 are hinged with the cylinder barrel 2.
Lead blocks 5 are arranged in the first sealing plate 3 and the second sealing plate 4.
The periphery of the oil inlet and the oil outlet is respectively provided with a first permanent magnet 6 and a second permanent magnet 7, and the first permanent magnet 6 and the second permanent magnet 7 are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel 2.
The periphery of the oil inlet and the oil outlet is respectively provided with a first gasket 8 and a second gasket 9, and the first gasket 8 and the second gasket 9 are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel 2. The first gasket 8 and the second gasket 9 are both made of an elastic material.
After hydraulic oil enters the cylinder body 1, under the pressure effect of the hydraulic oil, the 1 st stage hydraulic cylinder is jacked, after the pressure of the hydraulic oil reaches a certain degree, the first sealing plate 3 at the bottom of the cylinder barrel 2 of the 1 st stage hydraulic cylinder is pushed inwards, the hydraulic oil enters the cylinder barrel 2 of the 1 st stage hydraulic cylinder, the 2 nd stage hydraulic cylinder is jacked, after the pressure of the hydraulic oil continues to be increased to a certain degree, the first sealing plate 3 at the bottom of the cylinder barrel 2 of the 2 nd stage hydraulic cylinder is pushed upwards, and the hydraulic oil enters the cylinder barrel 2 of the 2 nd stage hydraulic cylinder to jack up the piston rod of the 2 nd stage hydraulic cylinder.
Similarly, when the hydraulic oil descends, the high-pressure hydraulic oil pushes up the second sealing plate 4, so that the hydraulic oil flows out.
It should be noted that the above description is only a preferred embodiment of the present invention, and that various similar representations can be made by those skilled in the art without departing from the spirit and scope of the claims of the present invention, and such modifications are within the scope of the present invention.
Claims (4)
1. The utility model provides a novel multistage pneumatic cylinder which characterized in that: the hydraulic cylinder comprises a cylinder body (1) and a hydraulic cylinder group, wherein the hydraulic cylinder group is sleeved in the cylinder body (1), the hydraulic cylinder group comprises N-level hydraulic cylinders, and a piston rod of a previous-level hydraulic cylinder in the N-level hydraulic cylinders is a cylinder barrel (2) of a next-level hydraulic cylinder;
The bottom of the cylinder body (1) is provided with an oil filling port, the bottom of a cylinder barrel (2) of the N-level hydraulic cylinder is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are respectively provided with a first sealing plate (3) which is opened inwards and a second sealing plate (4) which is opened outwards;
The first sealing plate (3) and the second sealing plate (4) are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel (2), and one ends of the first sealing plate (3) and the second sealing plate (4) are hinged with the cylinder barrel (2);
lead blocks (5) are arranged in the first sealing plate (3) and the second sealing plate (4), so that the dead weight of the sealing plate on the cylinder barrel of the previous stage is smaller than that of the sealing plate of the next stage, and the dead weight of the first sealing plate is smaller than that of the second sealing plate.
2. The novel multi-stage hydraulic cylinder according to claim 1, wherein: the periphery of the oil inlet and the oil outlet is respectively provided with a first permanent magnet (6) and a second permanent magnet (7), and the first permanent magnet (6) and the second permanent magnet (7) are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel (2).
3. The novel multi-stage hydraulic cylinder according to claim 1, wherein: the periphery of the oil inlet and the oil outlet is respectively provided with a first gasket (8) and a second gasket (9), and the first gasket (8) and the second gasket (9) are respectively arranged on the inner side and the outer side of the bottom of the cylinder barrel (2).
4. A novel multi-stage hydraulic cylinder according to claim 3, wherein: the first gasket (8) and the second gasket (9) are both made of an elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054329.1A CN107740795B (en) | 2016-11-25 | 2016-11-25 | Novel multistage hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611054329.1A CN107740795B (en) | 2016-11-25 | 2016-11-25 | Novel multistage hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107740795A CN107740795A (en) | 2018-02-27 |
| CN107740795B true CN107740795B (en) | 2024-05-07 |
Family
ID=61234987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611054329.1A Active CN107740795B (en) | 2016-11-25 | 2016-11-25 | Novel multistage hydraulic cylinder |
Country Status (1)
| Country | Link |
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| CN (1) | CN107740795B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388352B (en) * | 2019-08-06 | 2020-07-28 | 扬州大山液压气动制造有限公司 | Multi-stage hydraulic cylinder |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09254885A (en) * | 1996-03-22 | 1997-09-30 | Showa:Kk | Power tilt cylinder device |
| JPH10141323A (en) * | 1996-11-06 | 1998-05-26 | Yuasa Koki Kk | Hydraulic cylinder |
| JP2005350173A (en) * | 2004-06-08 | 2005-12-22 | Oil Drive Kogyo Kk | Hydraulic cylinder for hydraulic elevator and hydraulic circuit using it |
| CN101403400A (en) * | 2008-10-10 | 2009-04-08 | 胜利油田高原石油装备有限责任公司 | Multilevel constant-velocity hydraulic cylinder system |
| CN101539215A (en) * | 2009-05-05 | 2009-09-23 | 海宪华 | Novel flue check valve |
| CN102269197A (en) * | 2011-07-21 | 2011-12-07 | 淮安天工传动科技有限公司 | Multi-stage double-acting oil cylinder of hydraulic rail jack |
| CN102562709A (en) * | 2011-12-30 | 2012-07-11 | 湖南特力液压有限公司 | Difunctional synchronous telescopic type multistage hydraulic cylinder and hydraulic device |
| CN104591014A (en) * | 2014-11-25 | 2015-05-06 | 中联重科股份有限公司 | Telescopic cylinder, landing leg control system and crane |
| CN206647353U (en) * | 2016-11-25 | 2017-11-17 | 重庆键英液压机电有限公司 | New multistage telescopic hydraulic cylinder |
-
2016
- 2016-11-25 CN CN201611054329.1A patent/CN107740795B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09254885A (en) * | 1996-03-22 | 1997-09-30 | Showa:Kk | Power tilt cylinder device |
| JPH10141323A (en) * | 1996-11-06 | 1998-05-26 | Yuasa Koki Kk | Hydraulic cylinder |
| JP2005350173A (en) * | 2004-06-08 | 2005-12-22 | Oil Drive Kogyo Kk | Hydraulic cylinder for hydraulic elevator and hydraulic circuit using it |
| CN101403400A (en) * | 2008-10-10 | 2009-04-08 | 胜利油田高原石油装备有限责任公司 | Multilevel constant-velocity hydraulic cylinder system |
| CN101539215A (en) * | 2009-05-05 | 2009-09-23 | 海宪华 | Novel flue check valve |
| CN102269197A (en) * | 2011-07-21 | 2011-12-07 | 淮安天工传动科技有限公司 | Multi-stage double-acting oil cylinder of hydraulic rail jack |
| CN102562709A (en) * | 2011-12-30 | 2012-07-11 | 湖南特力液压有限公司 | Difunctional synchronous telescopic type multistage hydraulic cylinder and hydraulic device |
| CN104591014A (en) * | 2014-11-25 | 2015-05-06 | 中联重科股份有限公司 | Telescopic cylinder, landing leg control system and crane |
| CN206647353U (en) * | 2016-11-25 | 2017-11-17 | 重庆键英液压机电有限公司 | New multistage telescopic hydraulic cylinder |
Non-Patent Citations (1)
| Title |
|---|
| CPP桨毂机构电液伺服加载试验台;贵忠东;丁凡;袁野;李佑策;刘硕;满在朋;;农业机械学报;20131027(第01期);全文 * |
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| CN107740795A (en) | 2018-02-27 |
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