CN106996405A - A kind of stage variable pressure oil cylinder and its control method - Google Patents
A kind of stage variable pressure oil cylinder and its control method Download PDFInfo
- Publication number
- CN106996405A CN106996405A CN201710248754.2A CN201710248754A CN106996405A CN 106996405 A CN106996405 A CN 106996405A CN 201710248754 A CN201710248754 A CN 201710248754A CN 106996405 A CN106996405 A CN 106996405A
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- China
- Prior art keywords
- oil pocket
- oil
- stage
- pressure
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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
-
- 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
-
- 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
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Abstract
A kind of stage variable pressure oil cylinder and its control method, becoming cylinder pressure includes one-level cylinder body, first stage piston bar and protective cover cylinder；The first stage piston bar that can be released or reclaim is installed, the interior oil pocket of the one-level cylinder body is separated into the first oil pocket and the second oil pocket by the first stage piston bar in the first-stage cylinder body；The second oil duct for leading to the first oil duct of first oil pocket He leading to second oil pocket is provided with the first-stage cylinder body；Be provided with oil pocket in the first stage piston bar, the oil pocket be provided with can movable second piston rod relatively, the oil pocket is separated into the 3rd oil pocket and the 4th oil pocket by the second piston rod.The present invention proposes a kind of stage variable pressure oil cylinder, and the output of multi-stage booster pressure and multilevel decompression pressure is realized by the transformation to first stage piston bar, and the control method of above-mentioned stage variable pressure oil cylinder is also proposed in addition, and control is simple, with higher stability and controllability.
Description
Technical field
The present invention relates to hydraulic cylinder technical field, more particularly to a kind of stage variable pressure oil cylinder and its control method.
Background technology
Currently known change Press cylinder device is shown in Fig. 2, is mainly made up of cylinder body 1 and piston rod 2.Piston rod 2 separates oil cylinder
Into the first oil pocket 11 and the second oil pocket 12, the first oil pocket is bigger than the sectional area of the first oil pocket.First oil duct and the second oil duct point
Do not connected with the first oil pocket or the second oil pocket.According to forst law of motion PFirst oil pocket*SFirst oil pocket=PSecond oil pocket*SSecond oil pocket, obtain：When first
When oil pocket is input into pressure oil, the second oil pocket chamber exports boost pressure oil by the second oil duct；When the second oil pocket is input into pressure oil,
First oil pocket passes through the first oil duct output buck pressure oil.Shortcoming is：Pressure and boost pressure are depressured, respectively only first class pressure etc.
Level, it is impossible to meet the demand for control of multistage pressure.
The content of the invention
It is an object of the invention to propose a kind of stage variable pressure oil cylinder, multistage increase is realized by the transformation to first stage piston bar
The output of pressure pressure and multilevel decompression pressure.
Another object of the present invention is to propose the control method of above-mentioned stage variable pressure oil cylinder, control is simple, with higher
Stability and controllability.
For up to this purpose, the present invention uses following technical scheme：
A kind of stage variable pressure oil cylinder, including one-level cylinder body, first stage piston bar and protective cover cylinder；
The first stage piston bar that can be released or reclaim is installed, the protective cover cylinder is arranged at institute in the first-stage cylinder body
One end of one-level cylinder body is stated, and the rod end of the first stage piston bar stretches out one-level cylinder body, and positioned at the protection of protective cover cylinder
Intracavitary, the interior oil pocket of the one-level cylinder body is separated into the first oil pocket and the second oil pocket, first oil by the first stage piston bar
The sectional area of chamber is bigger than the sectional area of second oil pocket；
It is provided with the first-stage cylinder body and leads to the first oil duct of first oil pocket and lead to the of second oil pocket
Two oil ducts；
Oil pocket is provided with the first stage piston bar, the oil pocket is provided with fixed second piston rod, the oil
Chamber is separated into the 3rd oil pocket and the 4th oil pocket by the second piston rod, and the sectional area of the 3rd oil pocket is than the 4th oil pocket
Sectional area it is big；
The piston end of the second piston rod is located in the oil pocket, and the rod end of the second piston rod is fixedly connected on institute
One-level cylinder body is stated, the second piston rod, which is provided with, to lead to the 3rd oil duct of the 3rd oil pocket and lead to the 4th oil pocket
4th oil duct；
Seal is provided with the contact surface that the Relative friction of the first stage piston bar and the one-level cylinder body is slided；
Seal is also equipped with the contact surface that the Relative friction of the first stage piston bar and the second piston rod is slided.
Further description, first oil duct is located at the perforate of oil pocket inwall towards the head of the first stage piston bar
Top end face, second oil duct be located at oil pocket inwall perforate towards the head of the first stage piston bar bottom face.
Further description, the control method of above-mentioned stage variable pressure oil cylinder, the control method of its multi-stage booster is as follows：To
Different pressure oil combinations are inputted in first oil pocket, the 4th oil pocket or the 3rd oil pocket, are exported by the second oil pocket by the second oil duct
Different multi-stage booster pressure oil realizes supercharging；
Need the control method of multilevel decompression as follows：Different pressures are inputted into the second oil pocket, the 4th oil pocket or the 3rd oil pocket
Power oil combination, exports different multilevel decompression pressure oils by the first oil duct by the first oil pocket and realizes decompression.
Further description, during multi-stage booster, each oil pocket pressure dependence is：PFirst oil pocket*SFirst oil pocket+P4th oil pocket*S4th oil pocket-
P3rd oil pocket*S3rd oil pocket=PSecond oil pocket*SSecond oil pocket；
During multilevel decompression, each oil pocket pressure dependence is：PSecond oil pocket*SSecond oil pocket-P4th oil pocket*S4th oil pocket+P3rd oil pocket*S3rd oil pocket=
PFirst oil pocket*SFirst oil pocket。
Beneficial effects of the present invention：
1st, the output of multi-stage booster pressure and multilevel decompression pressure is realized by the transformation to first stage piston bar；
2nd, control method is simple, is provided with multiple variables and is regulated and controled, with multistage variable, and the characteristic phase one of variable
Cause, the carry out modulation that can stablize.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the present of invention；
Fig. 2 is the structural representation of one embodiment of prior art.
Wherein：
It is one-level cylinder body 1, the first oil pocket 11, the second oil pocket 12, the first oil duct 13, the second oil duct 14, first stage piston bar 2, anti-
Shield cylinder 3, protection chamber 31, oil pocket 4, the 3rd oil pocket 41, the 4th oil pocket 42, the 3rd oil duct 43, the 4th oil duct 44, second piston rod
5；
First oil duct 11 is located at the perforate 110 of oil pocket inwall, the second oil duct 12 and is located at the perforate 120 of oil pocket inwall；
Top end face 201, the bottom face 202 on the head of first stage piston bar 2.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
As shown in figure 1, a kind of stage variable pressure oil cylinder, including one-level cylinder body 1, first stage piston bar 2 and protective cover cylinder 3；
The first stage piston bar 2 that can be released or reclaim is installed, the protective cover cylinder 3 is set in the one-level cylinder body 1
Rod end in one end of the one-level cylinder body 1, and the first stage piston bar 2 stretches out the one-level cylinder body 1, and positioned at the protection
In the protection chamber 31 of cover cylinder 3, the interior oil pocket of the one-level cylinder body 1 is separated into the first oil pocket 11 and by the first stage piston bar 2
Two oil pockets 12, the sectional area of first oil pocket 11 is bigger than the sectional area of second oil pocket 12；
The first oil duct 13 for leading to first oil pocket 11 is provided with the one-level cylinder body 1 and leads to second oil pocket
12 the second oil duct 14；
Oil pocket 4 is provided with the first stage piston bar 2, the oil pocket 4 is provided with fixed second piston rod 5, institute
State oil pocket 4 and the 3rd oil pocket 41 and the 4th oil pocket 42, the sectional area ratio of the 3rd oil pocket 41 are separated into by the second piston rod 5
The sectional area of 4th oil pocket 42 is big；
The piston end of the second piston rod 5 is located in the oil pocket 4, and the rod end of the second piston rod 5 is fixedly connected
In the one-level cylinder body 1, the second piston rod 5 is provided with the 3rd oil duct 43 for leading to the 3rd oil pocket 41 and led to described
4th oil duct 44 of the 4th oil pocket 42；
Seal is provided with the contact surface that the Relative friction of the first stage piston bar 2 and the one-level cylinder body 1 is slided；
Sealing is also equipped with the contact surface that the Relative friction of the first stage piston bar 2 and the second piston rod 5 is slided
Part.
The application proposes a kind of stage variable pressure oil cylinder, and the output of multi-stage booster pressure and multilevel decompression pressure can be achieved.Will
First stage piston bar 2 as become level oil cylinder oil pocket 4, second piston rod 5 is arranged in oil pocket 4, and set second piston rod as
Fixed part, when the 3rd oil duct 43 or the 4th 44 oil-feed of oil duct, as the carry out activity of first stage piston bar 2 of secondary cylinder body, in addition,
The pressure protected in chamber 31 is zero.
Further instruction, when the various combination of the first oil pocket 11, the 4th oil pocket 42 and the 3rd oil pocket 41 is input into pressure oil
When, then the second oil pocket 12 exports different multi-stage booster pressure oils by the second oil duct 14；When the second oil pocket 12, the 4th oil pocket 42
When being input into pressure oil with the various combination of the 3rd oil pocket 41, then the first oil pocket 11 exports different multistage drops by the first oil duct 13
Pressure pressure oil, the output of multi-stage booster pressure and multilevel decompression pressure can be realized by making the change cylinder pressure of the application.
Further description, first oil duct 11 is located at the perforate 110 of oil pocket inwall towards the first stage piston bar 2
Head top end face 201, second oil duct 12 be located at oil pocket inwall perforate 120 towards the first stage piston bar 2 head
The bottom face 202 in portion.Perforate 110,120 just to head, makes fuel-displaced or oil-feed direction consistent with the direction of motion of piston rod,
Oil-feed or the fuel-displaced obstruction to piston rod movement are reduced, makes that there is higher controllability into oil pump capacity and oil pressure, realizes accurate increase
Level or the adjustment that degrades.
Further description, the control method of the application stage variable pressure oil cylinder, the control method of its multi-stage booster is as follows：
Different pressure oils combinations are inputted into the first oil pocket 11, the 4th oil pocket 42 or the 3rd oil pocket 41, the is passed through by the second oil pocket 12
Two oil ducts 14 export different multi-stage booster pressure oils and realize supercharging；
Need the control method of multilevel decompression as follows：Inputted not into the second oil pocket 12, the 4th oil pocket 42 or the 3rd oil pocket 41
Same pressure oil combination, exports different multilevel decompression pressure oils by the first oil duct 13 by the first oil pocket 11 and realizes decompression.
According to the forst law of motion, the control principle of multi-stage booster：PFirst oil pocket*SFirst oil pocket+P4th oil pocket*S4th oil pocket-P3rd oil pocket*
S3rd oil pocket=PSecond oil pocket*SSecond oil pocket, wherein P refers to the pressure of each chamber, and S refers to sectional area, when the first oil pocket 11, the 4th oil pocket
42 and the 3rd various combination of oil pocket 41 when being input into pressure oil, then the second oil pocket 12 exports different multistages by the second oil duct 14
Boost pressure oil.
The control principle of multilevel decompression：PSecond oil pocket*SSecond oil pocket-P4th oil pocket*S4th oil pocket+P3rd oil pocket*S3rd oil pocket=PFirst oil pocket*SFirst oil pocketWhen
When the various combination of second oil pocket 12, the 4th oil pocket 42 and the 3rd oil pocket 41 is input into pressure oil, then the first oil pocket 11 passes through first
Oil duct 13 exports different multilevel decompression pressure oils, makes the change cylinder pressure of the application and can realize multi-stage booster pressure and multilevel decompression pressure
The output of power, is provided with multiple variables and is regulated and controled, and with multistage variable, and the characteristic of variable is consistent, and what can be stablized enters
Row modulation.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel, which would not require any inventive effort, can associate other embodiments of the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (3)
1. a kind of stage variable pressure oil cylinder, it is characterised in that：Including one-level cylinder body, first stage piston bar and protective cover cylinder；
The first stage piston bar that can be released or reclaim is installed, the protective cover cylinder is arranged at described one in the first-stage cylinder body
One end of level cylinder body, and the rod end of the first stage piston bar stretches out the one-level cylinder body, and positioned at the protection of protective cover cylinder
Intracavitary, the interior oil pocket of the one-level cylinder body is separated into the first oil pocket and the second oil pocket, first oil by the first stage piston bar
The sectional area of chamber is bigger than the sectional area of second oil pocket；
The second oil for leading to the first oil duct of first oil pocket and leading to second oil pocket is provided with the first-stage cylinder body
Road；
Be provided with oil pocket in the first stage piston bar, the oil pocket is provided with fixed second piston rod, the oil pocket by
The second piston rod is separated into the 3rd oil pocket and the 4th oil pocket, sectional area the cutting than the 4th oil pocket of the 3rd oil pocket
Area is big；
The piston end of the second piston rod is located in the oil pocket, and the rod end of the second piston rod is fixedly connected on described one
Level cylinder body, the second piston rod, which is provided with, to lead to the 3rd oil duct of the 3rd oil pocket and leads to the 4th of the 4th oil pocket
Oil duct；
Seal is provided with the contact surface that the Relative friction of the first stage piston bar and the one-level cylinder body is slided；
Seal is also equipped with the contact surface that the Relative friction of the first stage piston bar and the second piston rod is slided.
2. the control method of stage variable pressure oil cylinder as claimed in claim 1, it is characterised in that：
The control method of multi-stage booster is as follows：Different pressure oil groups are inputted into the first oil pocket, the 4th oil pocket or the 3rd oil pocket
Close, exporting different multi-stage booster pressure oils by the second oil duct by the second oil pocket realizes supercharging；
Need the control method of multilevel decompression as follows：Different pressure oils are inputted into the second oil pocket, the 4th oil pocket or the 3rd oil pocket
Combination, exports different multilevel decompression pressure oils by the first oil duct by the first oil pocket and realizes decompression.
3. the control method of stage variable pressure oil cylinder according to claim 2, it is characterised in that：
During multi-stage booster, each oil pocket pressure dependence is：PFirst oil pocket*SFirst oil pocket+P4th oil pocket*S4th oil pocket-P3rd oil pocket*S3rd oil pocket=PSecond oil pocket*
SSecond oil pocket；
During multilevel decompression, each oil pocket pressure dependence is：PSecond oil pocket*SSecond oil pocket-P4th oil pocket*S4th oil pocket+P3rd oil pocket*S3rd oil pocket=PFirst oil pocket*
SFirst oil pocket。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248754.2A CN106996405B (en) | 2017-04-17 | 2017-04-17 | A kind of stage variable pressure oil cylinder and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710248754.2A CN106996405B (en) | 2017-04-17 | 2017-04-17 | A kind of stage variable pressure oil cylinder and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106996405A true CN106996405A (en) | 2017-08-01 |
| CN106996405B CN106996405B (en) | 2019-05-10 |
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ID=59434029
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710248754.2A Active CN106996405B (en) | 2017-04-17 | 2017-04-17 | A kind of stage variable pressure oil cylinder and its control method |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503088A (en) * | 2020-05-07 | 2020-08-07 | 山东万通液压股份有限公司 | Single-telescopic thrust multiplication hydraulic cylinder |
| CN113059070A (en) * | 2020-11-20 | 2021-07-02 | 宁波市鄞州派合机械有限公司 | Vertical pipe buckling machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050201874A1 (en) * | 2004-03-11 | 2005-09-15 | Atkinson Dana S. | Innerscoping hydraulic system |
| CN202946470U (en) * | 2012-06-02 | 2013-05-22 | 山西高行液压股份有限公司 | Speed change oil cylinder system |
| CN203532406U (en) * | 2013-05-14 | 2014-04-09 | 张家口长城液压油缸有限公司 | Multi-stage double-action reinforced hydraulic cylinder |
| CN204041615U (en) * | 2014-07-02 | 2014-12-24 | 中国人民解放军国防科学技术大学 | Controlled variable cross section oil hydraulic cylinder and hydraulic control system thereof |
| CN104806600A (en) * | 2015-04-16 | 2015-07-29 | 徐州重型机械有限公司 | Variable-speed hydraulic cylinder |
| CN205101317U (en) * | 2015-10-14 | 2016-03-23 | 三一重型能源装备有限公司 | Hydraulic cylinder speed governing hydraulic system and engineering machinery |
| CN206626041U (en) * | 2017-04-17 | 2017-11-10 | 佛山市恒力泰机械有限公司 | A kind of stage variable pressure oil cylinder |
-
2017
- 2017-04-17 CN CN201710248754.2A patent/CN106996405B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050201874A1 (en) * | 2004-03-11 | 2005-09-15 | Atkinson Dana S. | Innerscoping hydraulic system |
| CN202946470U (en) * | 2012-06-02 | 2013-05-22 | 山西高行液压股份有限公司 | Speed change oil cylinder system |
| CN203532406U (en) * | 2013-05-14 | 2014-04-09 | 张家口长城液压油缸有限公司 | Multi-stage double-action reinforced hydraulic cylinder |
| CN204041615U (en) * | 2014-07-02 | 2014-12-24 | 中国人民解放军国防科学技术大学 | Controlled variable cross section oil hydraulic cylinder and hydraulic control system thereof |
| CN104806600A (en) * | 2015-04-16 | 2015-07-29 | 徐州重型机械有限公司 | Variable-speed hydraulic cylinder |
| CN205101317U (en) * | 2015-10-14 | 2016-03-23 | 三一重型能源装备有限公司 | Hydraulic cylinder speed governing hydraulic system and engineering machinery |
| CN206626041U (en) * | 2017-04-17 | 2017-11-10 | 佛山市恒力泰机械有限公司 | A kind of stage variable pressure oil cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503088A (en) * | 2020-05-07 | 2020-08-07 | 山东万通液压股份有限公司 | Single-telescopic thrust multiplication hydraulic cylinder |
| CN113059070A (en) * | 2020-11-20 | 2021-07-02 | 宁波市鄞州派合机械有限公司 | Vertical pipe buckling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106996405B (en) | 2019-05-10 |
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