CN111637109A - Multi-oil-cylinder related accurate positioning system - Google Patents
Multi-oil-cylinder related accurate positioning system Download PDFInfo
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- CN111637109A CN111637109A CN202010548268.4A CN202010548268A CN111637109A CN 111637109 A CN111637109 A CN 111637109A CN 202010548268 A CN202010548268 A CN 202010548268A CN 111637109 A CN111637109 A CN 111637109A
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- 239000003921 oil Substances 0.000 claims description 79
- 230000002596 correlated effect Effects 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- 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
- F15B15/08—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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/24—Other details, e.g. assembly with regulating devices for restricting the stroke
-
- 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
- F15B15/26—Locking mechanisms
-
- 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
- F15B15/26—Locking mechanisms
- F15B2015/268—Fluid supply for locking or release independent of actuator pressurisation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention provides a multi-oil-cylinder related accurate positioning system which comprises a three-cavity oil cylinder for accurate positioning adjustment, a control device connected with the three-cavity oil cylinder and a related oil cylinder connected with the control device, wherein the three-cavity oil cylinder comprises a cylinder body, and an inner piston rod and an outer piston rod which are arranged in an inner cavity of the cylinder body. The three-cavity oil cylinder is provided with an inner piston rod and an outer piston rod which are transversely arranged, the inner cavity of the three-cavity oil cylinder is divided into a first cavity, a second cavity and a third cavity by the inner piston rod and the outer piston rod, and pressure oil feeding control is performed through the three cavities, so that the telescopic movement of the inner piston rod and the outer piston rod of the three-cavity oil cylinder is controlled, locking is performed after the inner piston rod is positioned by controlling a hydraulic reversing valve through a related oil cylinder, the outer piston rod can continue to extend to the designed stroke, and controllable accurate positioning adjustment of the oil cylinder is realized.
Description
Technical Field
The invention relates to the technical field of hydraulic control of engineering machinery, in particular to a multi-cylinder association precise positioning system.
Background
In the working environment of the engineering machinery, a hydraulic system has been widely applied due to the characteristics of convenient operation and control, effective overload protection and the like, wherein a hydraulic oil cylinder is used as an important execution element of the hydraulic system and becomes an indispensable important component part in the working environment of the engineering machinery, but the hydraulic oil cylinder is limited due to the structure, the stroke and the installation distance of the oil cylinder are fixed after the oil cylinder is formed and are difficult to change, in some special working conditions, the plurality of oil cylinders need to be correlated, the oil cylinders have a plurality of working positions, and at this time, the plurality of oil cylinders need to be controlled respectively in a manual operation mode, and meanwhile, the positioning is difficult to accurately control, and huge deviation exists. The multi-cylinder related precise positioning system is a solution for the situation.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a multi-cylinder related precise positioning system, so as to solve the problems mentioned in the background art.
The technical problem solved by the invention is realized by adopting the following technical scheme: the multi-oil-cylinder related accurate positioning system comprises a three-cavity oil cylinder for accurate positioning adjustment, a control device connected with the three-cavity oil cylinder and a related oil cylinder connected with the control device, wherein the three-cavity oil cylinder comprises a cylinder body, an inner piston rod and an outer piston rod which are arranged in an inner cavity of the cylinder body, the inner cavity of the cylinder body is separated by the inner piston rod and the outer piston rod to form a first cavity, a second cavity and a third cavity, and the first cavity, the second cavity and the third cavity are respectively connected with the control device through pipelines;
the control device comprises three groups of hydraulic control one-way valves and a hydraulic reversing valve which are respectively connected with the inner cavity of the three-cavity oil cylinder, the three groups of hydraulic control one-way valves are a first hydraulic control one-way valve, a second hydraulic control one-way valve and a third hydraulic control one-way valve, the hydraulic reversing valve is connected with the first hydraulic control one-way valve in series, the second hydraulic control one-way valve and the third hydraulic control one-way valve are respectively communicated with the oil tank through a P2 port and a P1 port of the control device, the hydraulic reversing valve is connected with pipelines from the third hydraulic control one-way valve to the P1 port in parallel, and the linked oil cylinder controls the on-off.
The further scheme of the invention is as follows: the tail end of a piston rod in the three-cavity oil cylinder is provided with a first piston, an inner cavity of the three-cavity oil cylinder is separated by the first piston to form a first cavity and a second cavity, the tail end of an outer piston rod is provided with a second piston, and an inner cavity of the three-cavity oil cylinder is separated by the second piston to form a third cavity.
The further scheme of the invention is as follows: the inner piston rod and the outer piston rod are connected in a sliding mode in an inner cavity of the three-cavity oil cylinder, and a second piston of the outer piston rod is arranged corresponding to the front end of the inner piston rod.
The further scheme of the invention is as follows: and a step block is arranged in the inner cavity of the three-cavity oil cylinder and is positioned in the second cavity to limit the displacement of the first piston.
The further scheme of the invention is as follows: and the first hydraulic control one-way valve, the second hydraulic control one-way valve and the third hydraulic control one-way valve are respectively connected with the first cavity, the second cavity and the third cavity of the three-cavity oil cylinder through an S1 port, a K1 port and a K2 port of the control device.
The further scheme of the invention is as follows: one path of hydraulic oil circuit in the associated oil cylinder is connected with the hydraulic reversing valve through an X port of the control device for control.
Compared with the prior art, the invention has the beneficial effects that: the three-cavity oil cylinder is provided with an inner piston rod and an outer piston rod which are transversely arranged, the inner cavity of the three-cavity oil cylinder is divided into a first cavity, a second cavity and a third cavity by the inner piston rod and the outer piston rod, and pressure oil feeding control is performed through the three cavities, so that the telescopic movement of the inner piston rod and the outer piston rod of the three-cavity oil cylinder is controlled, locking is performed after the inner piston rod is positioned by controlling a hydraulic reversing valve through a related oil cylinder, the outer piston rod can continue to extend to the designed stroke, and controllable accurate positioning adjustment of the oil cylinder is realized.
Drawings
FIG. 1 is a hydraulic schematic of the present invention;
FIG. 2 is a schematic structural diagram of a three-cavity oil cylinder according to the present invention.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further described below by combining the specific drawings.
As shown in FIGS. 1-2,
the embodiment provides a multi-cylinder association accurate positioning system, which comprises a three-cavity cylinder 1 for accurate positioning adjustment, a control device 2 connected with the three-cavity cylinder 1, and an association cylinder 3 connected with the control device 2, wherein the three-cavity cylinder 1 comprises a cylinder body 11, and an inner piston rod 12 and an outer piston rod 13 which are arranged in an inner cavity of the cylinder body 11, the inner cavity of the cylinder body 11 is separated by the inner piston rod 12 and the outer piston rod 13 to form a first cavity 14, a second cavity 15 and a third cavity 16, and the first cavity 14, the second cavity 15 and the third cavity 16 are respectively connected with the control device 2 through pipelines;
the control device 2 comprises three groups of hydraulic control one-way valves and a hydraulic reversing valve 24 which are respectively connected with the inner cavity of the three-cavity oil cylinder 1, the three groups of hydraulic control one-way valves are a first hydraulic control one-way valve 21, a second hydraulic control one-way valve 22 and a third hydraulic control one-way valve 23, the hydraulic reversing valve 24 is connected with the first hydraulic control one-way valve 21 in series, the second hydraulic control one-way valve 22 and the third hydraulic control one-way valve 23 are respectively communicated with the oil tank through a P2 port and a P1 port of the control device 2, the hydraulic reversing valve 24 is connected with pipelines of the third hydraulic control one-way valve 23 to the P1 port in parallel, the first hydraulic control one-way valve 21 is connected with the oil tank, and the related oil cylinder 3 controls the.
In this embodiment, a first piston 17 is disposed at a tail end of an inner piston rod 12 of the three-cavity oil cylinder 1, an inner cavity of the three-cavity oil cylinder 1 is separated by the first piston 17 to form a first cavity 14 and a second cavity 15, a second piston 18 is disposed at a tail end of an outer piston rod 13, and an inner cavity of the three-cavity oil cylinder 1 is separated by the second piston 18 to form a third cavity 16. The inner piston rod 12 and the outer piston rod 13 are connected in a sliding manner in the inner cavity of the three-cavity oil cylinder 1, and the second piston 18 of the outer piston rod 13 is arranged corresponding to the front end of the inner piston rod 12.
In this embodiment, a step block 19 is disposed in an inner cavity of the three-cavity oil cylinder 1, and the step block 19 is located in the second cavity 14 and is used for limiting displacement of the first piston 17, so as to control positioning adjustment of the three-cavity oil cylinder 1.
In this embodiment, the first pilot-controlled check valve 21, the second pilot-controlled check valve 22, and the third pilot-controlled check valve 23 are respectively connected with the first cavity 14, the second cavity 15, and the third cavity 16 of the three-cavity oil cylinder 1 through an S1 port, a K1 port, and a K2 port of the control device.
In this embodiment, one hydraulic oil path in the associated oil cylinder 3 is connected to the hydraulic directional valve 24 through an X port of the control device for control. When the hydraulic change-over valve 24 is not pressurized by the associated cylinder 3, the oil path of the first pilot-operated check valve 21 is directly returned to the oil tank, and when the hydraulic change-over valve 24 is pressurized, the first pilot-operated check valve 21 is communicated with the port P1 of the control device 2.
The working principle of the invention is as follows: when pressure oil enters the control device from the port P1, the pressure oil opens the second hydraulic control one-way valve 22 and the third hydraulic control one-way valve 23, the pressure oil at the port P1 enters the third cavity 16 of the three-cavity oil cylinder 1, the second cavity 15 of the three-cavity oil cylinder 1 is directly communicated with an oil tank through the port P2 for oil return, at the moment, if the associated oil cylinder 3 does not work, the port X has no pressure, the first cavity 14 of the three-cavity oil cylinder 1 is communicated with the oil tank for oil return, the outer piston rod 13 and the inner piston rod 12 of the three-cavity oil cylinder 1 both move leftwards under the action of the pressure oil, so that the three-cavity oil cylinder 1 contracts, and the action of oil cylinder contraction; if the associated oil cylinder 3 works, the port X has pressure, the first cavity 14 of the three-cavity oil cylinder 1 is communicated with the port P1, pressure oil enters the first cavity 14, and because the surface area of the inner piston rod 12 in the first cavity 14 is larger than the surface area of the outer piston rod 13 in the second oil cavity 15, the inner piston rod 12 and the outer piston rod 13 will move rightwards finally, and the three-cavity oil cylinder 1 performs extending action; at this time, because the inside of the cylinder body 11 of the three-cavity oil cylinder 1 is provided with the step block 19, when the inner piston rod 12 moves to the step block 19, the inner piston rod is mechanically limited, so that the extending action of the three-cavity oil cylinder 1 reaches accurate positioning when the associated oil cylinder 3 moves. After the three-cavity oil cylinder 1 is accurately positioned, if switching pressure oil enters the control device 2 from the port P2, the pressure oil only opens the third hydraulic control one-way valve 23 of the port K2, the first hydraulic control one-way valve 21 of the port S1 cannot discharge hydraulic oil locking the first cavity 14, the inner piston rod 12 does not move, the pressure oil only pushes the outer piston rod 13 to move rightwards, and at the moment, the three-cavity oil cylinder 1 can continue to extend to the designed stroke.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. Accurate positioning system of many hydro-cylinders relevance, including three chamber hydro-cylinders that are used for accurate location to adjust, the controlling means who is connected with three chamber hydro-cylinders, connection controlling means's relevant hydro-cylinder, its characterized in that: the three-cavity oil cylinder comprises a cylinder body, an inner piston rod and an outer piston rod, wherein the inner piston rod and the outer piston rod are arranged in an inner cavity of the cylinder body;
the control device comprises three groups of hydraulic control one-way valves and a hydraulic reversing valve which are respectively connected with the inner cavity of the three-cavity oil cylinder, the three groups of hydraulic control one-way valves are a first hydraulic control one-way valve, a second hydraulic control one-way valve and a third hydraulic control one-way valve, the hydraulic reversing valve is connected with the first hydraulic control one-way valve in series, the second hydraulic control one-way valve and the third hydraulic control one-way valve are respectively communicated with the oil tank through a P2 port and a P1 port of the control device, the hydraulic reversing valve is connected with pipelines from the third hydraulic control one-way valve to the P1 port in parallel, and the linked oil cylinder controls the on-off.
2. The multi-cylinder correlated precision positioning system of claim 1, characterized in that: the tail end of a piston rod in the three-cavity oil cylinder is provided with a first piston, an inner cavity of the three-cavity oil cylinder is separated by the first piston to form a first cavity and a second cavity, the tail end of an outer piston rod is provided with a second piston, and an inner cavity of the three-cavity oil cylinder is separated by the second piston to form a third cavity.
3. The multi-cylinder correlated precision positioning system of claim 2, characterized in that: the inner piston rod and the outer piston rod are connected in a sliding mode in an inner cavity of the three-cavity oil cylinder, and a second piston of the outer piston rod is arranged corresponding to the front end of the inner piston rod.
4. The multi-cylinder correlated precision positioning system of claim 3, characterized in that: and a step block is arranged in the inner cavity of the three-cavity oil cylinder and is positioned in the second cavity to limit the displacement of the first piston.
5. The multi-cylinder correlated precision positioning system of claim 2, characterized in that: and the first hydraulic control one-way valve, the second hydraulic control one-way valve and the third hydraulic control one-way valve are respectively connected with the first cavity, the second cavity and the third cavity of the three-cavity oil cylinder through an S1 port, a K1 port and a K2 port of the control device.
6. The multi-cylinder correlated precision positioning system of claim 5, characterized in that: one path of hydraulic oil circuit in the associated oil cylinder is connected with the hydraulic reversing valve through an X port of the control device for control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548268.4A CN111637109A (en) | 2020-06-16 | 2020-06-16 | Multi-oil-cylinder related accurate positioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548268.4A CN111637109A (en) | 2020-06-16 | 2020-06-16 | Multi-oil-cylinder related accurate positioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111637109A true CN111637109A (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010548268.4A Pending CN111637109A (en) | 2020-06-16 | 2020-06-16 | Multi-oil-cylinder related accurate positioning system |
Country Status (1)
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| CN (1) | CN111637109A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1096410A (en) * | 1996-09-20 | 1998-04-14 | Tadano Eng:Kk | Hydraulic cylinder and operation method therefor |
| CN2509361Y (en) * | 2001-11-01 | 2002-09-04 | 梁云波 | Air cylinder |
| CN202707668U (en) * | 2012-06-14 | 2013-01-30 | 王亚军 | Sectional type multiple-pass cylinder |
| CN103410807A (en) * | 2013-09-02 | 2013-11-27 | 缪乾 | Stroke-adjustable multi-position air cylinder |
| CN103771286A (en) * | 2014-02-24 | 2014-05-07 | 河海大学常州校区 | Multi-cylinder synchronous lifting mechanism |
| CN103821793A (en) * | 2014-03-17 | 2014-05-28 | 奉化市全盛自动化工程有限公司 | Multi-stroke air cylinder control system |
| GB2530796A (en) * | 2014-10-03 | 2016-04-06 | Sev Glocon Ltd | Actuator arrangement |
| CN206338261U (en) * | 2016-11-17 | 2017-07-18 | 晏万文 | Ultrahigh-pressure hydraulic pressure charging system with fast discharging component |
| CN108351041A (en) * | 2015-11-09 | 2018-07-31 | 克马蒂克公司 | Multifunctional sanitary valve and its operating method |
| CN108368951A (en) * | 2015-12-11 | 2018-08-03 | 完全化学私人有限公司 | The multiposition revolving actuator controlled by fluid |
| KR20180106502A (en) * | 2017-03-20 | 2018-10-01 | 최찬희 | Hydraulic booster for rock crusher |
| CN108679005A (en) * | 2018-04-23 | 2018-10-19 | 中国矿业大学 | A kind of multistage Multipurpose hydraulic booster that pressure ratio is variable |
| CN110296262A (en) * | 2019-06-27 | 2019-10-01 | 佛山市恒力泰机械有限公司 | A kind of multiple drive power cylinder and a kind of inserted valve of multiple drive power |
-
2020
- 2020-06-16 CN CN202010548268.4A patent/CN111637109A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1096410A (en) * | 1996-09-20 | 1998-04-14 | Tadano Eng:Kk | Hydraulic cylinder and operation method therefor |
| CN2509361Y (en) * | 2001-11-01 | 2002-09-04 | 梁云波 | Air cylinder |
| CN202707668U (en) * | 2012-06-14 | 2013-01-30 | 王亚军 | Sectional type multiple-pass cylinder |
| CN103410807A (en) * | 2013-09-02 | 2013-11-27 | 缪乾 | Stroke-adjustable multi-position air cylinder |
| CN103771286A (en) * | 2014-02-24 | 2014-05-07 | 河海大学常州校区 | Multi-cylinder synchronous lifting mechanism |
| CN103821793A (en) * | 2014-03-17 | 2014-05-28 | 奉化市全盛自动化工程有限公司 | Multi-stroke air cylinder control system |
| GB2530796A (en) * | 2014-10-03 | 2016-04-06 | Sev Glocon Ltd | Actuator arrangement |
| CN108351041A (en) * | 2015-11-09 | 2018-07-31 | 克马蒂克公司 | Multifunctional sanitary valve and its operating method |
| CN108368951A (en) * | 2015-12-11 | 2018-08-03 | 完全化学私人有限公司 | The multiposition revolving actuator controlled by fluid |
| CN206338261U (en) * | 2016-11-17 | 2017-07-18 | 晏万文 | Ultrahigh-pressure hydraulic pressure charging system with fast discharging component |
| KR20180106502A (en) * | 2017-03-20 | 2018-10-01 | 최찬희 | Hydraulic booster for rock crusher |
| CN108679005A (en) * | 2018-04-23 | 2018-10-19 | 中国矿业大学 | A kind of multistage Multipurpose hydraulic booster that pressure ratio is variable |
| CN110296262A (en) * | 2019-06-27 | 2019-10-01 | 佛山市恒力泰机械有限公司 | A kind of multiple drive power cylinder and a kind of inserted valve of multiple drive power |
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| 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: 20200908 |