CN112879379A - Efficient three-cavity hydraulic cylinder and actuating method thereof - Google Patents
Efficient three-cavity hydraulic cylinder and actuating method thereof Download PDFInfo
- Publication number
- CN112879379A CN112879379A CN202110141121.8A CN202110141121A CN112879379A CN 112879379 A CN112879379 A CN 112879379A CN 202110141121 A CN202110141121 A CN 202110141121A CN 112879379 A CN112879379 A CN 112879379A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- oil
- cavity
- hydraulic cylinder
- hydraulic cavity
- 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
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 117
- 239000010720 hydraulic oil Substances 0.000 claims description 18
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
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
-
- 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
- F15B15/1409—Characterised by the construction of the motor unit of the straight-cylinder type with two or more independently movable working pistons
-
- 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
- F15B15/202—Externally-operated valves mounted in or on the actuator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The application belongs to the field of hydraulic cylinders, and particularly relates to a high-efficiency three-cavity hydraulic cylinder and an actuating method thereof. The high-efficiency three-cavity hydraulic cylinder comprises a first hydraulic cylinder, a second hydraulic cylinder, a piston, an oil inlet and return pipeline and an oil control pipeline. The second hydraulic cylinder and the first hydraulic cylinder are provided with hydraulic cavities which are communicated with each other, and the cross-sectional area of the second hydraulic cylinder is larger than that of the first hydraulic cylinder; the piston comprises a first piston part, a second piston part and a piston rod, and the first piston part and the second piston part divide hydraulic cavities of the first hydraulic cylinder and the second hydraulic cylinder into a first hydraulic cavity, a second hydraulic cavity and a third hydraulic cavity respectively; the first oil inlet and return pipeline A is connected with the first hydraulic cavity, and the second oil inlet and return pipeline B is connected with the third hydraulic cavity; and the first oil control pipeline, the second oil control pipeline and the third oil control pipeline are all provided with a back pressure valve. The high-efficient three chamber pneumatic cylinders of this application can solve the problem of pneumatic cylinder inefficiency under the low load, improves the test frequency, saves test time and expense.
Description
Technical Field
The application belongs to the field of hydraulic cylinders, and particularly relates to a high-efficiency three-cavity hydraulic cylinder and an actuating method thereof.
Background
Hydraulic cylinders are common hydraulic working components that are capable of converting hydraulic pressure into mechanical motion. A common hydraulic cylinder configuration is shown in figure 1. The hydraulic cylinder comprises cylinder body outer wall, piston rod, hydraulic chamber 1, hydraulic chamber 2 and oil inlet and return port A, B. When the port A is filled with oil and the port B is filled with oil, pressure difference exists between the hydraulic cavity 1 and the hydraulic cavity 2, and the piston is pushed to move rightwards by the pressure difference. Similarly, the piston will move to the left when port B is filled with oil. In a strength test, a hydraulic cylinder is widely used for applying load to a test piece, the test piece is fixed in the test process, the load of the hydraulic cylinder is in direct proportion to the elastic deformation of the test piece, namely, a small load is needed initially, a large load is needed during maximum deformation, and the hydraulic cylinder is designed according to the maximum load.
The prior art has the disadvantage that the area of the piston can only be designed according to the maximum load, and under the condition of a certain flow, the larger the area of the piston is, the lower the movement speed is, so that the efficiency of the prior art is lower under low load.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The application aims to provide an efficient three-cavity hydraulic cylinder and an actuating method thereof, so as to solve at least one problem in the prior art.
The technical scheme of the application is as follows:
a first aspect of the present application provides a high-efficiency three-chamber hydraulic cylinder, comprising:
a first hydraulic cylinder;
the second hydraulic cylinder is connected with the first hydraulic cylinder, the second hydraulic cylinder and the first hydraulic cylinder are provided with hydraulic cavities which are communicated with each other, and the cross-sectional area of the second hydraulic cylinder is larger than that of the first hydraulic cylinder;
the piston comprises a first piston part, a second piston part and a piston rod, the first piston part is arranged in the first hydraulic cylinder, the second piston part is arranged in the second piston part, the first piston part and the second piston part divide hydraulic cavities of the first hydraulic cylinder and the second hydraulic cylinder into a first hydraulic cavity, a second hydraulic cavity and a third hydraulic cavity respectively, one end of the piston rod is sequentially connected with the first piston part and the second piston part, and the other end of the piston rod extends out of the end part of the second hydraulic cylinder to serve as a loading end;
the oil inlet and return pipeline comprises a first oil inlet and return pipeline A and a second oil inlet and return pipeline B, the first oil inlet and return pipeline A is connected with the first hydraulic cavity, and the second oil inlet and return pipeline B is connected with the third hydraulic cavity;
an oil control pipeline comprising a first oil control pipeline, a second oil control pipeline and a third oil control pipeline, wherein,
one end of the first oil control pipeline is connected with the first hydraulic cavity, the other end of the first oil control pipeline is connected with the second hydraulic cavity, and a first back pressure valve S is arranged on the first oil control pipeline;
one end of the second oil control pipeline is connected with the first oil inlet and return pipeline A, the other end of the second oil control pipeline is connected with the second hydraulic cavity, and a second back pressure valve R is arranged on the second oil control pipeline;
one end of the third oil control pipeline is connected with the second hydraulic cavity, the other end of the third oil control pipeline is connected with the third hydraulic cavity, and a third back pressure valve T is arranged on the third oil control pipeline.
Optionally, the first hydraulic cylinder is integrally formed with the second hydraulic cylinder.
Optionally, the first hydraulic cylinder and the second hydraulic cylinder are both cylindrical.
A second aspect of the present application provides an actuating method for a high-efficiency three-chamber hydraulic cylinder, based on the high-efficiency three-chamber hydraulic cylinder as described above, including:
during forward loading, first advance to return oil pipeline A oil feed, the second advances to return oil pipeline B oil return:
in the first stage, the first backpressure valve S, the second backpressure valve R and the third backpressure valve T are all closed, and hydraulic oil enters the first hydraulic cavity to push the piston to move in the forward direction;
in the second stage, along with the forward movement of the piston, the volume of the second hydraulic cavity is gradually increased, the pressure is reduced, when the pressure difference between the second hydraulic cavity and the third hydraulic cavity reaches the opening threshold of the third backpressure valve T, the third backpressure valve T is opened, the hydraulic oil in the third hydraulic cavity flows back, and the oil is supplemented to the second hydraulic cavity;
in the third stage, the pressure of the first hydraulic cavity is gradually increased along with the oil inlet of the first hydraulic cavity, when the opening threshold of the first backpressure valve R is reached, the first backpressure valve R is opened, and the oil inlet of the first hydraulic cavity and the oil inlet of the second hydraulic cavity are jointly performed;
in the fourth stage, the pressure of the second hydraulic cavity is gradually increased along with the oil inlet of the second hydraulic cavity, and when the pressure difference between the second hydraulic cavity and the third hydraulic cavity is smaller than the opening threshold of the third backpressure valve T, the third backpressure valve T is closed;
during reverse loading, first advance to return oil pipeline A oil return, the second advances to return oil pipeline B oil feed:
in the first stage, the first backpressure valve S, the second backpressure valve R and the third backpressure valve T are all closed, and hydraulic oil enters a third hydraulic cavity to push the piston to move reversely;
in the second stage, along with the reverse motion of the piston, the volume of the second hydraulic cavity is gradually reduced, the pressure is increased, when the pressure difference between the first hydraulic cavity and the second hydraulic cavity reaches the opening threshold of the first backpressure valve S, the first backpressure valve S is opened, and the hydraulic oil in the second hydraulic cavity flows back through the first hydraulic cavity.
The invention has at least the following beneficial technical effects:
the high-efficient three chamber pneumatic cylinders of this application, under low load, through little cross section chamber oil feed, the functioning speed is fast, under high load, through little cross section chamber and the common oil feed of middle chamber, can effectively improve loading efficiency.
Drawings
FIG. 1 is a schematic view of a high-efficiency, three-chamber hydraulic cylinder according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a high-efficiency, three-chamber hydraulic cylinder according to one embodiment of the present application.
Wherein:
1-a first hydraulic chamber; 2-a second hydraulic chamber; 3-third hydraulic chamber.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments that can be derived by a person skilled in the art from the embodiments given herein without making any creative effort shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the scope of the present application.
The present application is described in further detail below with reference to fig. 1-2.
A first aspect of the present application provides a high-efficiency three-chamber hydraulic cylinder, comprising: the hydraulic system comprises a first hydraulic cylinder, a second hydraulic cylinder, a piston, an oil inlet and return pipeline and an oil control pipeline.
Specifically, the second pneumatic cylinder is connected with first pneumatic cylinder, and first pneumatic cylinder and second pneumatic cylinder all are the cylinder, preferred integrated into one piece structure, and the second pneumatic cylinder has the hydraulic pressure chamber that communicates each other with first pneumatic cylinder, and the cross sectional area of second pneumatic cylinder is greater than the cross sectional area of first pneumatic cylinder.
The piston includes first piston portion, second piston portion and piston rod, first piston portion sets up in first pneumatic cylinder, second piston portion sets up in the second piston portion, three chamber structures are separated into with the hydraulic pressure chamber of first pneumatic cylinder and second pneumatic cylinder respectively to first piston portion and second piston portion, first hydraulic pressure chamber 1, second hydraulic pressure chamber 2, third hydraulic pressure chamber 3, both sides are the small cross section cavity respectively in the three chamber structures, big cross section cavity, the centre is the cross section cavity of notch cuttype. One end of the piston rod is sequentially connected with the first piston part and the second piston part, and the other end of the piston rod extends out of the end part of the second hydraulic cylinder to serve as a loading end, so that loading of loads is realized.
The utility model provides a high-efficient three-cavity hydraulic cylinder still including advancing oil return pipeline and oil accuse pipeline, advances oil return pipeline and includes that first advance oil return pipeline A and second advance oil return pipeline B, and first advance oil return pipeline A is connected with first hydraulic pressure chamber 1, and the second advances oil return pipeline B to be connected with third hydraulic pressure chamber 3. The oil control pipeline comprises a first oil control pipeline, a second oil control pipeline and a third oil control pipeline, wherein one end of the first oil control pipeline is connected with the first hydraulic cavity 1, the other end of the first oil control pipeline is connected with the second hydraulic cavity 2, a first back pressure valve S is arranged on the first oil control pipeline, one end of the second oil control pipeline is connected with the first oil inlet and return pipeline A, the other end of the second oil control pipeline is connected with the second hydraulic cavity 2, and a second back pressure valve R is arranged on the second oil control pipeline; one end of a third oil control pipeline is connected with the second hydraulic cavity 2, the other end of the third oil control pipeline is connected with the third hydraulic cavity 3, and a third back pressure valve T is arranged on the third oil control pipeline.
The application discloses three chamber pneumatic cylinders of high efficiency through three backpressure valve, controls the flow direction of hydraulic oil. When the pressure of the second hydraulic chamber 2 is greater than the pressure of the first hydraulic chamber 1 and the differential pressure between the pressure of the second hydraulic chamber and the pressure of the first hydraulic chamber is greater than the opening threshold of the first backpressure valve S, the first backpressure valve S is opened, and hydraulic oil in the second hydraulic chamber 2 can flow to the first hydraulic chamber 1; when the pressure of the first oil inlet and return pipeline A is greater than that of the second hydraulic cavity 2 and the differential pressure between the first oil inlet and return pipeline A and the second oil inlet and return pipeline A is greater than the opening threshold of the second backpressure valve R, the second backpressure valve R is opened, hydraulic oil in the first oil inlet and return pipeline A can flow to the second hydraulic cavity 2, and oil can be commonly fed into the first hydraulic cavity 1 and the second hydraulic cavity 2; when the pressure of the third hydraulic chamber 3 is greater than the pressure of the second hydraulic chamber 2 and the differential pressure between the third hydraulic chamber and the second hydraulic chamber is greater than the opening threshold of the third backpressure valve T, the third backpressure valve T opens, and hydraulic oil in the third hydraulic chamber 3 can flow to the second hydraulic chamber 2.
Based on the high-efficiency three-cavity hydraulic cylinder, the application also provides an actuating method of the high-efficiency three-cavity hydraulic cylinder, which comprises the following steps:
during forward loading, first advance to return oil pipeline A oil feed, the second advances to return oil pipeline B oil return:
in the first stage, the first backpressure valve S, the second backpressure valve R and the third backpressure valve T are all closed, hydraulic oil enters the first hydraulic cavity 1, and the piston is pushed to move in the forward direction;
in the second stage, along with the forward movement of the piston, the volume of the second hydraulic cavity 2 is gradually increased, the pressure is reduced, when the pressure difference between the second hydraulic cavity 2 and the third hydraulic cavity 3 reaches the opening threshold of the third backpressure valve T, the third backpressure valve T is opened, the hydraulic oil in the third hydraulic cavity 3 flows back, and the oil is supplemented to the second hydraulic cavity 2;
in the third stage, the pressure of the first hydraulic cavity 1 is gradually increased along with the oil inlet of the first hydraulic cavity 1, when the opening threshold of the first backpressure valve R is reached, the first backpressure valve R is opened, and the first hydraulic cavity 1 and the second hydraulic cavity 2 are jointly filled with oil;
in the fourth stage, the pressure of the second hydraulic chamber 2 is gradually increased along with the oil feeding of the second hydraulic chamber 2, and when the pressure difference between the second hydraulic chamber 2 and the third hydraulic chamber 3 is smaller than the opening threshold of the third backpressure valve T, the third backpressure valve T is closed;
during reverse loading, first advance to return oil pipeline A oil return, the second advances to return oil pipeline B oil feed:
in the first stage, the first backpressure valve S, the second backpressure valve R and the third backpressure valve T are all closed, hydraulic oil enters the third hydraulic cavity 3, and the piston is pushed to move reversely;
in the second stage, along with the reverse motion of the piston, the volume of the second hydraulic cavity 2 is gradually reduced, the pressure is increased, when the pressure difference between the first hydraulic cavity 1 and the second hydraulic cavity 2 reaches the opening threshold of the first backpressure valve S, the first backpressure valve S is opened, and the hydraulic oil in the second hydraulic cavity 2 flows back through the first hydraulic cavity 1.
According to the actuating method of the high-efficiency three-cavity hydraulic cylinder, in the initial stage of forward loading, the pressure is smaller than the opening threshold of the back pressure valve, the back pressure valve is not opened, hydraulic oil only enters the first hydraulic cavity 1, and the piston is pushed to move forward. The volume of the second hydraulic cavity 2 is increased in the piston movement process, the pressure is reduced, the third backpressure valve T is opened under the pressure difference between the second hydraulic cavity 2 and the third hydraulic cavity 3, hydraulic oil in the third hydraulic cavity 3 returns to supplement oil to the second hydraulic cavity 2, and the first backpressure valve S is closed all the time under the pressure difference between the first hydraulic cavity 1 and the second hydraulic cavity 2. Because the cross-sectional area of the first hydraulic chamber 1 is small, the running speed is high under the condition of a certain flow, and a test piece can be quickly loaded. Along with the oil inlet of the first hydraulic cavity 1, when the opening threshold of the first backpressure valve R is reached, the first backpressure valve R is opened, the oil inlet of the first hydraulic cavity 1 and the oil inlet of the second hydraulic cavity 2 are jointly performed, and the third backpressure valve T is closed due to the fact that the oil inlet pressure is higher than the oil return pressure, and the maximum load can be applied.
The application discloses high-efficient three chamber pneumatic cylinders and actuating method thereof, under low load, through little cross-section chamber oil feed, the functioning speed is fast, under high load, through little cross-section chamber and the common oil feed of middle chamber. The problem of the pneumatic cylinder inefficiency under low load can be solved, improve the test frequency, save test time and expense.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (4)
1. A high-efficiency three-cavity hydraulic cylinder is characterized by comprising:
a first hydraulic cylinder;
the second hydraulic cylinder is connected with the first hydraulic cylinder, the second hydraulic cylinder and the first hydraulic cylinder are provided with hydraulic cavities which are communicated with each other, and the cross-sectional area of the second hydraulic cylinder is larger than that of the first hydraulic cylinder;
the piston comprises a first piston part, a second piston part and a piston rod, the first piston part is arranged in the first hydraulic cylinder, the second piston part is arranged in the second piston part, the first piston part and the second piston part divide hydraulic cavities of the first hydraulic cylinder and the second hydraulic cylinder into a first hydraulic cavity (1), a second hydraulic cavity (2) and a third hydraulic cavity (3) respectively, one end of the piston rod is connected with the first piston part and the second piston part in sequence, and the other end of the piston rod extends out of the end part of the second hydraulic cylinder to serve as a loading end;
the oil inlet and return pipeline comprises a first oil inlet and return pipeline A and a second oil inlet and return pipeline B, the first oil inlet and return pipeline A is connected with the first hydraulic cavity (1), and the second oil inlet and return pipeline B is connected with the third hydraulic cavity (3);
an oil control pipeline comprising a first oil control pipeline, a second oil control pipeline and a third oil control pipeline, wherein,
one end of the first oil control pipeline is connected with the first hydraulic cavity (1), the other end of the first oil control pipeline is connected with the second hydraulic cavity (2), and a first back pressure valve S is arranged on the first oil control pipeline;
one end of the second oil control pipeline is connected with the first oil inlet and return pipeline A, the other end of the second oil control pipeline is connected with the second hydraulic cavity (2), and a second back pressure valve R is arranged on the second oil control pipeline;
one end of the third oil control pipeline is connected with the second hydraulic cavity (2), the other end of the third oil control pipeline is connected with the third hydraulic cavity (3), and a third backpressure valve T is arranged on the third oil control pipeline.
2. The high-efficiency, three-chamber hydraulic cylinder of claim 1, wherein the first hydraulic cylinder is integrally formed with the second hydraulic cylinder.
3. The high-efficiency, three-chamber hydraulic cylinder of claim 2, wherein the first cylinder and the second cylinder are each cylindrical.
4. A method for actuating a high-efficiency three-chamber hydraulic cylinder according to any one of claims 1 to 3, comprising:
during forward loading, first advance to return oil pipeline A oil feed, the second advances to return oil pipeline B oil return:
in the first stage, the first backpressure valve S, the second backpressure valve R and the third backpressure valve T are all closed, hydraulic oil enters the first hydraulic cavity (1) and pushes the piston to move in the forward direction;
in the second stage, along with the forward movement of the piston, the volume of the second hydraulic cavity (2) is gradually increased, the pressure is reduced, when the pressure difference between the second hydraulic cavity (2) and the third hydraulic cavity (3) reaches the opening threshold of the third backpressure valve T, the third backpressure valve T is opened, the hydraulic oil in the third hydraulic cavity (3) flows back, and the oil is supplemented to the second hydraulic cavity (2);
in the third stage, along with the oil feeding of the first hydraulic cavity (1), the pressure of the first hydraulic cavity (1) is gradually increased, when the opening threshold value of the first backpressure valve R is reached, the first backpressure valve R is opened, and the first hydraulic cavity (1) and the second hydraulic cavity (2) are jointly fed with oil;
in the fourth stage, along with the oil inlet of the second hydraulic cavity (2), the pressure of the second hydraulic cavity (2) is gradually increased, and when the pressure difference between the second hydraulic cavity (2) and the third hydraulic cavity (3) is smaller than the opening threshold of the third backpressure valve T, the third backpressure valve T is closed;
during reverse loading, first advance to return oil pipeline A oil return, the second advances to return oil pipeline B oil feed:
in the first stage, the first backpressure valve S, the second backpressure valve R and the third backpressure valve T are all closed, hydraulic oil enters a third hydraulic cavity (3) and pushes the piston to move reversely;
in the second stage, along with the reverse movement of the piston, the volume of the second hydraulic cavity (2) is gradually reduced, the pressure is increased, when the pressure difference between the first hydraulic cavity (1) and the second hydraulic cavity (2) reaches the opening threshold of the first backpressure valve S, the first backpressure valve S is opened, and the hydraulic oil in the second hydraulic cavity (2) flows back through the first hydraulic cavity (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141121.8A CN112879379A (en) | 2021-02-01 | 2021-02-01 | Efficient three-cavity hydraulic cylinder and actuating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141121.8A CN112879379A (en) | 2021-02-01 | 2021-02-01 | Efficient three-cavity hydraulic cylinder and actuating method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112879379A true CN112879379A (en) | 2021-06-01 |
Family
ID=76052516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110141121.8A Pending CN112879379A (en) | 2021-02-01 | 2021-02-01 | Efficient three-cavity hydraulic cylinder and actuating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112879379A (en) |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2169722Y (en) * | 1993-04-18 | 1994-06-22 | 周龙生 | High effect energy saving pressure increasing device |
| JPH08105401A (en) * | 1994-10-03 | 1996-04-23 | Toyooki Kogyo Co Ltd | Booster device |
| US20020029569A1 (en) * | 2000-09-11 | 2002-03-14 | Nambu Co., Ltd | Pressure intensifying apparatus for hydraulic cylinder |
| US20030097924A1 (en) * | 2001-11-28 | 2003-05-29 | Minibooster Hydraulics A/S | Hydraulic pressure intensifier |
| JP2006153113A (en) * | 2004-11-29 | 2006-06-15 | Mitsubishi Heavy Ind Ltd | Valve built-in type hydraulic cylinder |
| CN102878147A (en) * | 2012-10-29 | 2013-01-16 | 山西天创液压机械设备制造有限公司 | Acceleration oil cylinder device |
| CN203223265U (en) * | 2013-01-11 | 2013-10-02 | 江苏公大动力技术有限公司 | Overflow valve and actuator |
| CN103883585A (en) * | 2014-04-08 | 2014-06-25 | 武汉科技大学 | Self-adapting load conversion hydraulic cylinder |
| CN104422597A (en) * | 2013-08-29 | 2015-03-18 | 深圳市弗赛特检测设备有限公司 | Constant-force loading device of test stand of drilling tool |
| CN204357806U (en) * | 2014-11-25 | 2015-05-27 | 王凤娟 | A kind of simple and easy self booster |
| CN104712594A (en) * | 2015-03-06 | 2015-06-17 | 长沙伟诺机电有限公司 | Coating supercharging device |
| CN104832466A (en) * | 2014-12-12 | 2015-08-12 | 中国航空工业集团公司北京长城计量测试技术研究所 | Area ratio-variable pressure multiplication device and adjustment method |
| EP3034889A1 (en) * | 2014-12-18 | 2016-06-22 | Scanwill ApS | Pressure transducer with clamping sleeve |
| US20180252241A1 (en) * | 2017-03-03 | 2018-09-06 | Pistonpower Aps | Hydraulic pressure intensifier |
| CN109185240A (en) * | 2018-11-16 | 2019-01-11 | 美钻深海能源科技研发（上海）有限公司 | Energy storage type is from pressure release pressurized construction and control method |
| CN109334926A (en) * | 2018-10-17 | 2019-02-15 | 华中科技大学 | A kind of buoyancy regulating system and method for the deep underwater glider in full sea |
| CN110043783A (en) * | 2019-04-18 | 2019-07-23 | 黑龙江大学 | It is pressurized controllable type oiling device and correction oil injection method |
| CN209761886U (en) * | 2019-05-10 | 2019-12-10 | 郑州商学院 | Automatic pressurizing loop of hydraulic support upright post |
| CN209908877U (en) * | 2019-05-16 | 2020-01-07 | 佛山市顺德区亚数工业自动化科技有限公司 | Driving device of rotary oil cylinder |
-
2021
- 2021-02-01 CN CN202110141121.8A patent/CN112879379A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2169722Y (en) * | 1993-04-18 | 1994-06-22 | 周龙生 | High effect energy saving pressure increasing device |
| JPH08105401A (en) * | 1994-10-03 | 1996-04-23 | Toyooki Kogyo Co Ltd | Booster device |
| US20020029569A1 (en) * | 2000-09-11 | 2002-03-14 | Nambu Co., Ltd | Pressure intensifying apparatus for hydraulic cylinder |
| US20030097924A1 (en) * | 2001-11-28 | 2003-05-29 | Minibooster Hydraulics A/S | Hydraulic pressure intensifier |
| JP2006153113A (en) * | 2004-11-29 | 2006-06-15 | Mitsubishi Heavy Ind Ltd | Valve built-in type hydraulic cylinder |
| CN102878147A (en) * | 2012-10-29 | 2013-01-16 | 山西天创液压机械设备制造有限公司 | Acceleration oil cylinder device |
| CN203223265U (en) * | 2013-01-11 | 2013-10-02 | 江苏公大动力技术有限公司 | Overflow valve and actuator |
| CN104422597A (en) * | 2013-08-29 | 2015-03-18 | 深圳市弗赛特检测设备有限公司 | Constant-force loading device of test stand of drilling tool |
| CN103883585A (en) * | 2014-04-08 | 2014-06-25 | 武汉科技大学 | Self-adapting load conversion hydraulic cylinder |
| CN204357806U (en) * | 2014-11-25 | 2015-05-27 | 王凤娟 | A kind of simple and easy self booster |
| CN104832466A (en) * | 2014-12-12 | 2015-08-12 | 中国航空工业集团公司北京长城计量测试技术研究所 | Area ratio-variable pressure multiplication device and adjustment method |
| EP3034889A1 (en) * | 2014-12-18 | 2016-06-22 | Scanwill ApS | Pressure transducer with clamping sleeve |
| CN104712594A (en) * | 2015-03-06 | 2015-06-17 | 长沙伟诺机电有限公司 | Coating supercharging device |
| US20180252241A1 (en) * | 2017-03-03 | 2018-09-06 | Pistonpower Aps | Hydraulic pressure intensifier |
| CN109334926A (en) * | 2018-10-17 | 2019-02-15 | 华中科技大学 | A kind of buoyancy regulating system and method for the deep underwater glider in full sea |
| CN109185240A (en) * | 2018-11-16 | 2019-01-11 | 美钻深海能源科技研发（上海）有限公司 | Energy storage type is from pressure release pressurized construction and control method |
| CN110043783A (en) * | 2019-04-18 | 2019-07-23 | 黑龙江大学 | It is pressurized controllable type oiling device and correction oil injection method |
| CN209761886U (en) * | 2019-05-10 | 2019-12-10 | 郑州商学院 | Automatic pressurizing loop of hydraulic support upright post |
| CN209908877U (en) * | 2019-05-16 | 2020-01-07 | 佛山市顺德区亚数工业自动化科技有限公司 | Driving device of rotary oil cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103291685B (en) | A kind of little load high speed, heavy load low speed cylinder | |
| CN202707672U (en) | Fast-low speed combined oil cylinder | |
| CN101168179A (en) | Hydraulic forming equipment | |
| CN203685751U (en) | Three-stage constant thrust hydraulic oil cylinder | |
| CN111017785B (en) | Energy-saving hydraulic cylinder for reciprocating lifting | |
| CN112879379A (en) | Efficient three-cavity hydraulic cylinder and actuating method thereof | |
| CN110630582B (en) | Cylinder energy storage type hydraulic cylinder | |
| CN202971410U (en) | Double-stroke cylinder | |
| US20220333621A1 (en) | Pneumatic actuator | |
| CN205118326U (en) | Hydraulic damper for elevator | |
| CN205207304U (en) | Novel sequence action pneumatic cylinder | |
| CN203176054U (en) | Multistage cylinder | |
| CN114087244A (en) | Release-blocking oil way based on passive mold opening working condition of press | |
| CN215058516U (en) | Reciprocating automatic reversing supercharger | |
| JP2002070806A (en) | Bi-directional actuation cylinder device | |
| CN201486954U (en) | Air (oil) pressure cylinder improvement device | |
| CN217271085U (en) | Main jacking oil cylinder accelerating device of spiral pipe jacking machine | |
| CN203297187U (en) | Small load at high speed and large load at low speed cylinder device | |
| CN207064174U (en) | A kind of second-compressed cylinder | |
| CN205973594U (en) | Mechanical lock double acting jack | |
| CN218817344U (en) | Three-stage expansion hydraulic structure | |
| CN113153837A (en) | Reciprocating automatic reversing supercharger | |
| CN110529441B (en) | Ultrahigh-pressure double-acting continuous automatic supercharging device | |
| CN110454462A (en) | Energy saving cylinder, energy-saving hydraulic system and engineering machinery | |
| CN201068316Y (en) | Discharging plate oil cylinder device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for 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: 20210601 |