CN114370439A - Hydraulic system in series mode - Google Patents
Hydraulic system in series mode Download PDFInfo
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- CN114370439A CN114370439A CN202210118402.6A CN202210118402A CN114370439A CN 114370439 A CN114370439 A CN 114370439A CN 202210118402 A CN202210118402 A CN 202210118402A CN 114370439 A CN114370439 A CN 114370439A
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- Prior art keywords
- hydraulic
- valve
- group
- oil
- hydraulic cylinder
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
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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
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/78—Control of multiple output members
- F15B2211/782—Concurrent control, e.g. synchronisation of two or more actuators
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a series mode hydraulic system, which belongs to the technical field of hydraulic systems and comprises a power assembly, a central valve group, a functional valve group and a hydraulic cylinder group, wherein the power assembly, the central valve group, the functional valve group and the hydraulic cylinder group are sequentially connected through pipelines, the power assembly is used for conveying hydraulic oil to the functional valve group through the central valve group, and the functional valve group is used for cutting off and reversing the hydraulic oil so as to change the movement direction of the hydraulic cylinder group. In the embodiment of the invention, the hydraulic system with the hydraulic cylinders switched in the serial mode can realize the control of a plurality of four-cylinder hydraulic systems under the condition of ensuring synchronous driving of the four-cylinder systems, automatically eliminate accumulated errors through overflow valves arranged on the oil cylinders in the operation process and ensure the stable operation of hydraulic pressure.
Description
Technical Field
The invention belongs to the technical field of hydraulic systems, and particularly relates to a series mode hydraulic system.
Background
The existing hydraulic system can not realize synchronous driving of a multi-cylinder system, and the multi-cylinder system has large accumulated errors in the operation process, so that the stable operation of the system can not be ensured.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an embodiment of the present invention provides a series-mode hydraulic system.
In order to solve the technical problems, the invention provides the following technical scheme:
a series mode hydraulic system comprises a power assembly, a central valve group, a functional valve group and a hydraulic cylinder group,
the power assembly, the central valve group, the functional valve group and the hydraulic cylinder group are connected in sequence through pipelines,
the power assembly is used for conveying hydraulic oil to the functional valve group through the central valve group,
the function valve group is used for cutting off and reversing the hydraulic oil so as to change the movement direction of the hydraulic cylinder group.
As a further improvement of the invention: the power assembly comprises a hydraulic motor, a hydraulic pump and an oil tank,
the hydraulic pump is arranged at the output end of the hydraulic motor, the hydraulic motor is used for driving the hydraulic pump to rotate,
the hydraulic pump is installed inside the oil tank, and an oil-water separator is further arranged in the oil tank and used for discharging air in the system.
As a further improvement of the invention: the hydraulic motor is connected with the hydraulic pump through a coupler,
the power assembly further comprises a central valve block, an overflow valve and a one-way valve, wherein the one-way valve is used for preventing hydraulic oil from flowing back to the hydraulic pump.
As a further improvement of the invention: and an oil filling port is arranged on one side of the oil tank.
As a still further improvement of the invention: the hydraulic pump is a gear pump, and the rotating speed of the gear pump is 2 ml/r.
As a still further improvement of the invention: the rated power of the hydraulic motor 8 is 800W, and the set pressure of the overflow valve or the highest working pressure of the system is 14 MPa.
As a still further improvement of the invention: the function valve group comprises a reversing manifold block, a pressure sensor and a two-position two-way valve used for controlling the movement of the hydraulic cylinder group,
the two-position two-way valve is connected with the hydraulic pump through a pipeline, and the pressure sensor is used for detecting the working pressure of the system.
As a still further improvement of the invention: the functional valve group also comprises a two-position two-way balance valve SV2, a two-position two-way balance valve SV3, a two-position two-way balance valve SV6 and a two-position two-way balance valve SV4,
the two-position two-way balance valve SV2, the two-position two-way balance valve SV3, the two-position two-way balance valve SV6, the two-position two-way balance valve SV4 and the two-position two-way valve can be cartridge valves.
As a still further improvement of the invention: the pipeline between the function valve group and the hydraulic cylinder group comprises an oil inlet pipeline connected with a first working oil port of the two-position two-way valve and an oil return pipeline connected with a second working oil port of the two-position two-way valve,
when the hydraulic cylinders of the hydraulic cylinder group are in a serial working state, the oil inlet pipeline and the oil return pipeline are set as follows:
the oil inlet pipeline is connected with the upper cavity of the first hydraulic cylinder, the lower cavity of the first hydraulic cylinder is connected with the upper cavity of the next hydraulic cylinder through a pipeline, the lower cavity of the last hydraulic cylinder is connected with the oil return pipeline, and then the lower cavity of the upper-stage hydraulic cylinder is connected with the upper cavity of the lower-stage hydraulic cylinder through a pipeline, so that the hydraulic cylinders are connected in series.
As a still further improvement of the invention: the hydraulic cylinder group switching device further comprises a control module, wherein the control module is electrically connected with the pressure sensor and used for controlling the two-position two-way valve, the functional valve group, the central valve block and the hydraulic motor to rotate forwards and backwards according to the working pressure detected by the pressure sensor so as to realize switching of the movement direction of the hydraulic cylinder group.
Compared with the prior art, the invention has the beneficial effects that:
in the embodiment of the invention, the hydraulic system with the hydraulic cylinders converted in the series mode can control a plurality of four-cylinder hydraulic systems under the condition of ensuring synchronous driving of the four-cylinder systems, can automatically eliminate accumulated errors through overflow valves arranged on the oil cylinders in the operation process, ensures stable operation of hydraulic pressure, has the advantages of quick response, high stability, small risk and good safety performance, and is suitable for occasions with heavy load, multiple functional requirements and stable working condition requirements, such as rail four-way shuttle vehicles. This hydraulic system application can realize the quick switching-over and the jacking motion of shuttle in the quadriversal shuttle, can increase the maximum cargo capacity of shuttle simultaneously, this hydraulic system stability is high, the later maintenance is simple, and is with low costs, logistics system's work efficiency among the stereoscopic warehouse has been improved, and this hydraulic system principle is reliable, the later maintenance is simple and convenient, can reduce the input of manpower and material resources effectively, apply to the quadriversal shuttle, can improve the work efficiency among the stereoscopic warehouse, better serve modernized intelligent storage logistics system. .
Drawings
FIG. 1 is a schematic diagram of a powertrain and center valve block of a series mode hydraulic system;
FIG. 2 is a first schematic diagram of a functional valve block of a series mode hydraulic system;
FIG. 3 is a second schematic diagram of a functional valve block of a series mode hydraulic system;
FIG. 4 is a schematic diagram of a powertrain in a series-mode hydraulic system.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
Referring to fig. 1, the embodiment provides a series mode hydraulic system, which includes a power assembly, a central valve group, a functional valve group, and a hydraulic cylinder group, where the power assembly, the central valve group, the functional valve group, and the hydraulic cylinder group are sequentially connected through a pipeline, the power assembly is configured to deliver hydraulic oil to the functional valve group through the central valve group, and the functional valve group is configured to cut off and reverse the hydraulic oil to change a moving direction of the hydraulic cylinder group.
Referring to fig. 4, in an embodiment, the power assembly includes a hydraulic motor 8, a hydraulic pump 1 and an oil tank 2, the hydraulic pump 1 is installed at an output end of the hydraulic motor 8, the hydraulic motor 8 is used for driving the hydraulic pump 1 to rotate, the hydraulic pump 1 is installed inside the oil tank 2, and an oil-water separator 5 is further disposed inside the oil tank 2 and used for discharging air in the system.
Drive hydraulic pump 1 through hydraulic motor 8 and rotate, and then pass through the pipeline with the inside hydraulic oil of oil tank 2 and carry to central valve group and function valves.
Referring to fig. 4, in an embodiment, the hydraulic motor 8 is connected to the hydraulic pump 1 through a coupling 7, the power assembly further includes a central valve block 3, an overflow valve and a check valve 4, the check valve 4 is used for preventing hydraulic oil from flowing back to the hydraulic pump 1, so as to prolong the service life of the hydraulic pump 1, and an oil filling port is disposed on one side of the oil tank 2, so that hydraulic oil can be supplemented and the amount of oil can be observed conveniently at any time.
Referring to fig. 1 and 4, in one embodiment, the center valve assembly includes a two-position two-way valve 6.
In one embodiment, the hydraulic pump 1 may be a gear pump, or may be another type of pump, and is not limited herein, the rotation speed of the gear pump is 2ml/r, the rated power of the hydraulic motor 8 is 800W, and the set pressure of the relief valve or the maximum system operating pressure is 14 MPa.
Referring to fig. 2 and 3, in one embodiment, the functional valve set includes a reversing manifold, a pressure sensor, and a two-position two-way valve for controlling the movement of the hydraulic cylinder set, the two-position two-way valve is connected to the hydraulic pump 1 through a pipeline, and the pressure sensor is used for detecting the working pressure of the system.
Referring to fig. 2, in an embodiment, the functional valve group further includes a two-position two-way balance valve SV2, a two-position two-way balance valve SV3, a two-position two-way balance valve SV6, and a two-position two-way balance valve SV4, where the two-position two-way balance valve SV2, the two-position two-way balance valve SV3, the two-position two-way balance valve SV6, the two-position two-way balance valve SV4, and the two-position two-way valve may all be cartridge valves, and the reversing of the four-cylinder system may be realized through the forward and reverse rotation of the hydraulic motor 8, so as to ensure the bidirectional operation of the four-cylinder system, and the overflow valve may be adjusted to a desired value by the cooperation of the two-position two-way valve and the overflow valve, so as to ensure the smooth operation of the four-cylinder system.
Referring to fig. 2 and 3, in an embodiment, the pipeline between the functional valve group and the hydraulic cylinder group includes an oil inlet pipeline connected to the first working oil port of the two-position two-way valve and an oil return pipeline connected to the second working oil port of the two-position two-way valve, and when the hydraulic cylinders of the hydraulic cylinder group are in a serial working state, the oil inlet pipeline and the oil return pipeline are set as follows: the oil inlet pipeline is connected with the upper cavity of the first hydraulic cylinder, the lower cavity of the first hydraulic cylinder is connected with the upper cavity of the next hydraulic cylinder through a pipeline, the lower cavity of the last hydraulic cylinder is connected with the oil return pipeline, and then the lower cavity of the upper-stage hydraulic cylinder is connected with the upper cavity of the lower-stage hydraulic cylinder through a pipeline, so that the hydraulic cylinders are connected in series.
Example 2
The hydraulic system in the series mode further comprises a control module, wherein the control module is electrically connected with the pressure sensor and used for controlling the two-position two-way valve 6, the functional valve group, the central valve block 3 and the hydraulic motor 8 to rotate forwards and backwards according to the working pressure detected by the pressure sensor so as to realize the switching of the movement direction of the hydraulic cylinder group.
In the embodiment of the invention, the hydraulic system with the hydraulic cylinders converted in the series mode can control a plurality of four-cylinder hydraulic systems under the condition of ensuring synchronous driving of the four-cylinder systems, can automatically eliminate accumulated errors through overflow valves arranged on the oil cylinders in the operation process, ensures stable operation of hydraulic pressure, has the advantages of quick response, high stability, small risk and good safety performance, and is suitable for occasions with heavy load, multiple functional requirements and stable working condition requirements, such as rail four-way shuttle vehicles. This hydraulic system application can realize the quick switching-over and the jacking motion of shuttle in the quadriversal shuttle, can increase the maximum cargo capacity of shuttle simultaneously, this hydraulic system stability is high, the later maintenance is simple, and is with low costs, logistics system's work efficiency among the stereoscopic warehouse has been improved, and this hydraulic system principle is reliable, the later maintenance is simple and convenient, can reduce the input of manpower and material resources effectively, apply to the quadriversal shuttle, can improve the work efficiency among the stereoscopic warehouse, better serve modernized intelligent storage logistics system.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (10)
1. A series mode hydraulic system is characterized by comprising a power assembly, a central valve group, a functional valve group and a hydraulic cylinder group,
the power assembly, the central valve group, the functional valve group and the hydraulic cylinder group are connected in sequence through pipelines,
the power assembly is used for conveying hydraulic oil to the functional valve group through the central valve group,
the function valve group is used for cutting off and reversing the hydraulic oil so as to change the movement direction of the hydraulic cylinder group.
2. A series mode hydraulic system according to claim 1, wherein the power pack comprises a hydraulic motor, a hydraulic pump and a tank,
the hydraulic pump is arranged at the output end of the hydraulic motor, the hydraulic motor is used for driving the hydraulic pump to rotate,
the hydraulic pump is installed inside the oil tank, and an oil-water separator is further arranged in the oil tank and used for discharging air in the system.
3. A series mode hydraulic system according to claim 2, wherein said hydraulic motor is coupled to said hydraulic pump via a coupling,
the power assembly further comprises a central valve block, an overflow valve and a one-way valve, wherein the one-way valve is used for preventing hydraulic oil from flowing back to the hydraulic pump.
4. A series mode hydraulic system according to claim 3, wherein a filler point is provided on one side of the tank.
5. A series mode hydraulic system according to claim 3, wherein the hydraulic pump is a gear pump, the gear pump having a speed of 2 ml/r.
6. A series mode hydraulic system according to claim 5, characterised in that the rated power of the hydraulic motor 8 is 800W and the set pressure of the relief valve or the maximum system operating pressure is 14 MPa.
7. A series mode hydraulic system according to claim 1, wherein the functional valve block comprises a reversing manifold, a pressure sensor and a two-position, two-way valve for controlling the movement of the hydraulic cylinder block,
the two-position two-way valve is connected with the hydraulic pump through a pipeline, and the pressure sensor is used for detecting the working pressure of the system.
8. A series mode hydraulic system according to claim 7, wherein said functional valve block further comprises two-position two-way balance valve SV2, two-position two-way balance valve SV3, two-position two-way balance valve SV6 and two-position two-way balance valve SV4,
the two-position two-way balance valve SV2, the two-position two-way balance valve SV3, the two-position two-way balance valve SV6, the two-position two-way balance valve SV4 and the two-position two-way valve can be cartridge valves.
9. The series-mode hydraulic system of claim 8, wherein the piping between the function valve group and the hydraulic cylinder group comprises an oil inlet piping connected to the first working port of the two-position two-way valve and an oil return piping connected to the second working port of the two-position two-way valve,
when the hydraulic cylinders of the hydraulic cylinder group are in a serial working state, the oil inlet pipeline and the oil return pipeline are set as follows:
the oil inlet pipeline is connected with the upper cavity of the first hydraulic cylinder, the lower cavity of the first hydraulic cylinder is connected with the upper cavity of the next hydraulic cylinder through a pipeline, the lower cavity of the last hydraulic cylinder is connected with the oil return pipeline, and then the lower cavity of the upper-stage hydraulic cylinder is connected with the upper cavity of the lower-stage hydraulic cylinder through a pipeline, so that the hydraulic cylinders are connected in series.
10. The series-mode hydraulic system as claimed in claim 7, further comprising a control module electrically connected to the pressure sensor for controlling the two-position two-way valve, the function valve set, the center valve block and the hydraulic motor to rotate in the forward and reverse directions to switch the moving directions of the hydraulic cylinder sets according to the working pressure detected by the pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210118402.6A CN114370439A (en) | 2022-02-08 | 2022-02-08 | Hydraulic system in series mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210118402.6A CN114370439A (en) | 2022-02-08 | 2022-02-08 | Hydraulic system in series mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114370439A true CN114370439A (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210118402.6A Pending CN114370439A (en) | 2022-02-08 | 2022-02-08 | Hydraulic system in series mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114370439A (en) |
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2022
- 2022-02-08 CN CN202210118402.6A patent/CN114370439A/en active Pending
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