CN114922872A - Editable cooperative control electro-hydraulic tool hydraulic system - Google Patents

Editable cooperative control electro-hydraulic tool hydraulic system Download PDF

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Publication number
CN114922872A
CN114922872A CN202210554082.9A CN202210554082A CN114922872A CN 114922872 A CN114922872 A CN 114922872A CN 202210554082 A CN202210554082 A CN 202210554082A CN 114922872 A CN114922872 A CN 114922872A
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oil
valve
hydraulic
proportional
electro
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Inventor
周泉
王瑜
冯俊龙
刘东舰
贺欣宇
吴尚泽
张静
张程
蒋巍
张荃
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No63926 Unit Of Pla
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No63926 Unit Of Pla
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Priority to CN202210554082.9A priority Critical patent/CN114922872A/en
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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
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
    • 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
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • 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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • 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
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention provides an editable cooperative control electro-hydraulic tool hydraulic system which comprises an electric control hydraulic power source, a valve island actuator and a signal processing unit. The electric control hydraulic power source comprises an electro-hydraulic proportional control module, a pump motor set, an oil tank and hydraulic auxiliaries; the electro-hydraulic proportional control module comprises an electromagnetic proportional reversing valve, a fixed-differential pressure reducing valve, an energy accumulator, a pressure gauge, a one-way valve, a high-pressure oil filter and a safety valve; the pump motor set comprises a motor and an oil pump; the oil tank and the hydraulic auxiliary part comprise an oil tank, an oil return filter and a cooler. The valve terminal executor includes PA solenoid directional valve, PB solenoid directional valve and hydro-cylinder. The signal processing unit comprises a switching power supply and an electromagnetic proportional reversing valve proportional amplifier. The invention controls the electromagnetic directional valve and the electromagnetic proportional directional valve through the signal processing unit, realizes that the oil cylinders of the actuators of the valve islands can be edited and cooperatively controlled, completes the action logic and posture cooperative operation of the hydraulic actuating mechanism, and reserves a signal interface suitable for an automatic assembly platform controlled by a computer program.

Description

Editable cooperative control electro-hydraulic tool hydraulic system
Technical Field
The invention belongs to the technical field of nonstandard processing and installation of a building steel structure, and particularly relates to an editable cooperative control electro-hydraulic tool hydraulic system.
Background
At present, the hydraulic synchronization technology is generally used in the field of installation of building steel structures. In the aspect of steel structure processing and manufacturing, the hydraulic technology is mainly used for assembling and welding large regular components, but for spatial three-dimensional node components with a plurality of angles and different angles in the same plane, assembling and welding tools are more complex. When the tool is driven by the electro-hydraulic driving, the action of the actuating mechanism is often related to the actual processing technology of various processed components, and more complex action logic and attitude cooperativity are needed. Therefore, a hydraulic system which is suitable for complex operation control of the electro-hydraulic tool and has editability and strong cooperativity needs to be designed.
Disclosure of Invention
Technical problem to be solved
The invention provides an editable cooperative control electro-hydraulic tool hydraulic system, which aims to solve the technical problems that the existing steel structure assembly electro-hydraulic tool is single in logic, weak in cooperativity, only capable of machining a specific component and low in utilization rate.
(II) technical scheme
In order to solve the technical problem, the invention provides an editable cooperative control electro-hydraulic tool hydraulic system which comprises an electric control hydraulic power source, a valve island actuator and a signal processing unit; the valve island actuator is connected with the electric control hydraulic power source through a hydraulic rubber pipe, and the signal processing unit is respectively connected with the electric control hydraulic power source and the valve island actuator through control cables; wherein,
the electric control hydraulic power source is skid-mounted and integrated, comprises a pump motor set, an electro-hydraulic proportional control module, an oil tank and a hydraulic auxiliary part, and is connected with each other through a hydraulic rubber pipe or a hard pipe row; wherein,
the pump motor set comprises two oil pumps and two motors; oil inlets of the first oil pump and the second oil pump are respectively connected with an oil tank, and the first motor and the second motor are respectively driven to rotate after being electrified, so that electric energy is converted into hydraulic energy;
the electro-hydraulic proportional control module is an oil path block, and three electromagnetic proportional reversing valves, three fixed-differential pressure reducing valves, three energy accumulators, four pressure gauges, a safety valve, a high-pressure oil filter and five one-way valves are integrated on the electro-hydraulic proportional control module; oil outlets of the first oil pump and the second oil pump are respectively connected with oil inlets of the first one-way valve and the second one-way valve; oil outlets of the first one-way valve and the second one-way valve are divided into three paths, the first path is connected with a first pressure gauge serving as a system pressure gauge, the second path is combined with a system oil return path to an oil tank after passing through a safety valve, and the third path is connected with an oil inlet of the high-pressure oil filter; the oil outlet of the high-pressure oil filter is divided into three paths after passing through a third one-way valve, the first path is connected with a first energy accumulator and a second pressure gauge, the second path is connected with a valve island actuator after passing through a first reducing valve and a first electromagnetic proportional reversing valve in sequence, and the third path is connected with oil inlets of a fourth one-way valve and a fifth one-way valve respectively; the third check valve, the first energy accumulator, the second pressure gauge, the first constant-pressure-difference pressure-reducing valve and the first electromagnetic proportional directional valve jointly form a first group of electro-hydraulic proportional control oil passages; the fourth check valve, the second energy accumulator, the third pressure gauge, the second fixed-differential pressure reducing valve and the second electromagnetic proportional reversing valve jointly form a second group of electro-hydraulic proportional control oil passages, and the connection mode of the second group of electro-hydraulic proportional control oil passages is the same as that of the first group of electro-hydraulic proportional control oil passages and is used as an actuator for expanding and controlling the second group of valve islands; a fifth check valve, a third energy accumulator, a fourth pressure gauge, a third fixed-differential pressure reducing valve and a third electromagnetic proportional directional valve jointly form a third group of electro-hydraulic proportional control oil passages, and the connection mode of the third group of electro-hydraulic proportional control oil passages is the same as that of the first group of electro-hydraulic proportional control oil passages and is used as an actuator for expanding and controlling a third group of valve islands; the connection mode of the second group of electro-hydraulic proportional control oil passages and the third group of electro-hydraulic proportional control oil passages with the valve island actuator is the same as that of the first group of electro-hydraulic proportional control oil passages with the valve island actuator;
the oil tank and the hydraulic auxiliary part comprise a cooler, an oil tank and an oil return filter; the cooler is connected between overflow ports of the first oil pump and the second oil pump and the oil tank, and plays a role in heat dissipation when the oil pumps run; the return oil filter is connected between a main return oil path of the system and the oil tank and plays a role in filtering when the system runs;
the valve island actuator comprises six PA electromagnetic directional valves, six PB electromagnetic directional valves, six left oil cylinders and six right oil cylinders; oil inlets of the six PA electromagnetic directional valves are connected with a first oil outlet of the first electromagnetic proportional directional valve; first oil outlets of the six PA electromagnetic directional valves are respectively connected with the extension oil cavities of the six left oil cylinders, and second oil outlets are respectively connected with the extension oil cavities of the six right oil cylinders; oil inlets of the six PB electromagnetic directional valves are connected with a second oil outlet of the first electromagnetic proportional directional valve; first oil outlets of the six PB electromagnetic directional valves are respectively connected with retracting oil cavities of the six left oil cylinders, and second oil outlets are respectively connected with retracting oil cavities of the six right oil cylinders;
each electromagnetic proportional directional valve, the PA electromagnetic directional valve and the PB electromagnetic directional valve are respectively connected with the signal processing unit through control cables; each left oil cylinder and each right oil cylinder are respectively connected with the signal processing unit through feedback signal cables;
the signal processing unit comprises an AC220V/DC24V switching power supply and valve-loaded proportional amplifiers of three electromagnetic proportional reversing valves; wherein, the switching power supply inputs AC220V and outputs DC 24V; each valve-mounted proportional amplifier is provided with a terminal A connected with a 24V + terminal row of the switching power supply, a terminal B connected with a 0 terminal row of the switching power supply, a reserved enabling signal terminal C, a 4-20 mA instruction input terminal D, E, a feedback signal terminal F of a controlled oil cylinder, a proportional amplifier grounding terminal G, and a terminal X and a terminal Y which are connected with an electromagnet between the proportional amplifier and the controlled oil cylinder; the first control button of the first PA electromagnetic directional valve is provided with two normally-off contacts, one end of one normally-off contact is connected with the 24V + terminal row of the switching power supply, the other end of the one normally-off contact is connected with one pole of the electromagnet of the first PA electromagnetic directional valve, and the other pole of the electromagnet is connected with the 0 terminal row of the switching power supply; one end of the other normally-off contact is connected with a feedback signal terminal F of the first electromagnetic proportional reversing valve proportional amplifier, the other end of the other normally-off contact is connected with one pole of a first left oil cylinder sensor of the first left oil cylinder, and the other pole of the first left oil cylinder sensor is connected with a 0 terminal row of the switching power supply;
the first control button of the first PB electromagnetic directional valve is provided with two normally-off contacts, one end of one normally-off contact is connected with the 24V + terminal row of the switch power supply, the other end of the one normally-off contact is connected with one pole of the electromagnet of the first PB electromagnetic directional valve, and the other pole of the electromagnet is connected with the 0 terminal row of the switch power supply; one end of the other normally-off contact is connected with a feedback signal terminal F of the first electromagnetic proportional reversing valve proportional amplifier, the other end of the other normally-off contact is connected with one pole of a first right oil cylinder sensor of the first right oil cylinder, and the other pole of the first right oil cylinder sensor is connected with a 0 terminal row of the switching power supply; the control of other PA electromagnetic directional valves and PB electromagnetic directional valves adopts the same mode.
(III) advantageous effects
The invention provides an editable cooperative control electro-hydraulic tool hydraulic system which comprises an electric control hydraulic power source, a valve island actuator and a signal processing unit. The electric control hydraulic power source comprises an electro-hydraulic proportional control module, a pump motor set, an oil tank and a hydraulic auxiliary; the electro-hydraulic proportional control module comprises an electromagnetic proportional reversing valve, a fixed-differential pressure reducing valve, an energy accumulator, a pressure gauge, a one-way valve, a high-pressure oil filter and a safety valve; the pump motor set comprises a motor and an oil pump; the oil tank and the hydraulic auxiliary part comprise an oil tank, an oil return filter and a cooler. The valve terminal executor includes PA solenoid directional valve, PB solenoid directional valve and hydro-cylinder. The signal processing unit comprises a switching power supply and an electromagnetic proportional reversing valve proportional amplifier. The invention controls the electromagnetic directional valve and the electromagnetic proportional directional valve through the signal processing unit, realizes that the oil cylinders of the actuators of the valve islands can be edited and cooperatively controlled, completes the action logic and posture cooperative operation of the hydraulic actuating mechanism, and reserves a signal interface suitable for an automatic assembly platform controlled by a computer program.
Drawings
FIG. 1 is a hydraulic schematic diagram of a hydraulic system of an electro-hydraulic tool according to an embodiment of the invention;
fig. 2 is a signal wiring diagram of an electro-hydraulic tool hydraulic system according to an embodiment of the invention.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The embodiment provides an editable cooperative control electro-hydraulic tool hydraulic system, and the hydraulic principle of the system is shown in fig. 1. The electro-hydraulic tool hydraulic system comprises an electric control hydraulic power source, a valve island actuator and a signal processing unit. The valve island actuator is connected with the electric control hydraulic power source through a hydraulic rubber pipe, and the signal processing unit is connected with the electric control hydraulic power source and the valve island actuator through control cables respectively.
The electric control hydraulic power source is skid-mounted and integrated, and comprises a pump motor set, an electro-hydraulic proportional control module, an oil tank and a hydraulic auxiliary, and the pump motor set, the electro-hydraulic proportional control module, the oil tank and the hydraulic auxiliary are mutually connected through a hydraulic rubber pipe or a hard pipe row.
The pump motor group includes the oil pump (including first oil pump 3.1, second oil pump 3.2), motor (including first motor 2.1 and second motor 2.2). Wherein, the oil inlets of the first oil pump 3.1 and the second oil pump 3.2 are respectively connected with the oil tank 1, and the first motor 2.1 and the second motor 2.2 are respectively driven to rotate by the first oil pump 3.1 and the second oil pump 3.2 after being electrified, so that the electric energy is converted into hydraulic energy.
The electro-hydraulic proportional control module is an oil path block, and an electromagnetic proportional directional valve (comprising a first electromagnetic proportional directional valve 12.1, a second electromagnetic proportional directional valve 12.2 and a third electromagnetic proportional directional valve 12.3), a constant-differential pressure reducing valve (comprising a first constant-differential pressure reducing valve 11.1, a second constant-differential pressure reducing valve 11.2 and a third constant-differential pressure reducing valve 11.3), an energy accumulator (comprising a first energy accumulator 10.1, a second energy accumulator 10.2 and a third energy accumulator 10.3), a pressure gauge (comprising a first pressure gauge 9.1, a second pressure gauge 9.2, a third pressure gauge 9.3 and a fourth pressure gauge 9.4), a safety valve 8, a high-pressure oil filter 7, a one-way valve (comprising a first one-way valve 5.1, a second one-way valve 5.2, a third one-way valve 5.3, a fourth one-way valve 5.4 and a fifth one-way valve 5.5) are integrated on the electro-hydraulic proportional control module.
Oil outlets of the first oil pump 3.1 and the second oil pump 3.2 are respectively connected with oil inlets of a first check valve 5.1 and a second check valve 5.2 of the electro-hydraulic proportional control module. The oil outlets of the first one-way valve 5.1 and the second one-way valve 5.2 are divided into three paths respectively, the first path is connected with a first pressure gauge 9.1 serving as a system pressure gauge, the second path is combined with a system oil return path to the oil tank 1 after passing through a safety valve 8, and the third path is connected with an oil inlet of the high-pressure oil filter 7.
The oil outlet of the high-pressure oil filter 7 is divided into three paths after passing through a third one-way valve 5.3, the first path is connected with a first energy accumulator 10.1 and a second pressure gauge 9.2, the second path is connected with a valve island actuator after passing through a first pressure reducing valve 11.1 and a first electromagnetic proportional reversing valve 12.1 in sequence, and the third path is connected with oil inlets of a fourth one-way valve 5.4 and a fifth one-way valve 5.5 respectively. The third check valve 5.3, the first accumulator 10.1, the second pressure gauge 9.2, the first constant-pressure-difference pressure-reducing valve 11.1 and the first electromagnetic proportional directional valve 12.1 jointly form a first group of electro-hydraulic proportional control oil passages.
And a fourth check valve 5.4, a second energy accumulator 10.2, a third pressure gauge 9.3, a second fixed-differential pressure-reducing valve 11.2 and a second electromagnetic proportional directional valve 12.2 jointly form a second group of electro-hydraulic proportional control oil passages, and the connection mode is the same as that of the first group of electro-hydraulic proportional control oil passages and is used as an actuator for expanding and controlling a second group of valve islands. And a fifth one-way valve 5.5, a third energy accumulator 10.3, a fourth pressure gauge 9.4, a third fixed-differential pressure-reducing valve 11.3 and a third electromagnetic proportional directional valve 12.3 jointly form a third group of electro-hydraulic proportional control oil passages, and the connection mode is the same as that of the first group of electro-hydraulic proportional control oil passages and is used as an actuator for expanding and controlling the third group of valve islands. The connection mode of the second group of electro-hydraulic proportional control oil passages and the third group of electro-hydraulic proportional control oil passages with the valve island actuator is the same as that of the first group of electro-hydraulic proportional control oil passages with the valve island actuator.
The oil tank and the hydraulic auxiliary comprise a cooler 6, an oil tank 1 and an oil return filter 4. The cooler 6 is connected between the overflow ports of the first oil pump 3.1 and the second oil pump 3.2 and the oil tank 1, and plays a role in heat dissipation when the oil pumps operate. The return oil filter 4 is connected between the main return oil path of the system and the oil tank 1, and plays a role in filtering when the system operates.
The valve island actuator comprises PA electromagnetic directional valves (comprising a first PA electromagnetic directional valve 13.1, a second PA electromagnetic directional valve 13.2, a third PA electromagnetic directional valve 13.3, a fourth PA electromagnetic directional valve 13.4, a fifth PA electromagnetic directional valve 13.5 and a sixth PA electromagnetic directional valve 13.6), PB electromagnetic directional valves (comprising a first PB electromagnetic directional valve 14.1, a second PB electromagnetic directional valve 14.2, a third PB electromagnetic directional valve 14.3, a fourth PB electromagnetic directional valve 14.4, a fifth PB electromagnetic directional valve 14.5 and a sixth PB electromagnetic directional valve 14.6), left oil cylinders (comprising a first left oil cylinder A1, a second left oil cylinder A2, a third left oil cylinder A3, a fourth left oil cylinder A4, a fifth left oil cylinder A5 and a sixth left oil cylinder A6) and right oil cylinders (comprising a first right oil cylinder B1, a second right oil cylinder B2, a third right oil cylinder B3, a fourth right oil cylinder B48335, a sixth right oil cylinder B4625B 35 and a sixth oil cylinder B6)
Oil inlets of six PA electromagnetic directional valves 13.1, 13.2, 13.3, 13.4, 13.5 and 13.6 are connected with a first oil outlet of the first electromagnetic proportional directional valve 12.1. The first oil outlets of the six PA electromagnetic directional valves 13.1, 13.2, 13.3, 13.4, 13.5 and 13.6 are respectively connected with the extension oil chambers of six left oil cylinders A1, A2, A3, A4, A5 and A6, and the second oil outlets are respectively connected with the extension oil chambers of six right oil cylinders B1, B2, B3, B4, B5 and B6. Oil inlets of the six PB electromagnetic directional valves 14.1, 14.2, 14.3, 14.4, 14.5 and 14.6 are connected with a second oil outlet of the first electromagnetic proportional directional valve 12.1. First oil outlets of the six PB electromagnetic directional valves 14.1, 14.2, 14.3, 14.4, 14.5 and 14.6 are respectively connected with retraction oil chambers of six left oil cylinders A1, A2, A3, A4, A5 and A6, and second oil outlets are respectively connected with retraction oil chambers of six right oil cylinders B1, B2, B3, B4, B5 and B6.
And the electromagnetic proportional directional valves, the PA electromagnetic directional valve and the PB electromagnetic directional valve are respectively connected with the signal processing unit through control cables. And each left oil cylinder and each right oil cylinder are respectively connected with the signal processing unit through feedback signal cables.
As shown in fig. 2, the signal processing unit comprises an AC220V/DC24V switching power supply and respective valve-borne proportional amplifiers of the three electromagnetic proportional directional valves 12.1, 12.2, 12.3. The switching power supply inputs AC220V and outputs DC24V, terminals A (including A1, A2 and A3) of all the valve-mounted proportional amplifiers are connected with a 24V + terminal row of the switching power supply, and terminals B (including B1, B2 and B3) of all the valve-mounted proportional amplifiers are connected with a 0 terminal row of the switching power supply. Electromagnets are connected between the terminal X and the terminal Y (including X1 and Y1, X2 and Y2, and X3 and Y3) of each valve-loaded proportional amplifier. Terminals C (including C1, C2 and C3) of the valve-loaded proportional amplifiers are enable signal interfaces reserved for the proportional amplifiers, terminals D (including D1, D2 and D3) and terminals E (including E1, E2 and E3) are command input interfaces of the proportional amplifiers 4-20 mA, terminals F (including F1, F2 and F3) are feedback signal terminals of oil cylinders controlled by the proportional amplifiers, and terminals G are grounded for the proportional amplifiers.
The first control button SB13.1 of the first PA electromagnetic directional valve 13.1 has two normally-off contacts, one end of one of which is connected to the 24V + terminal row of the switching power supply, the other end is connected to one pole of the electromagnet DT13.1 of the first PA electromagnetic directional valve 13.1, and the other pole of the electromagnet DT13.1 is connected to the 0 terminal row of the switching power supply; one end of the other normally-open contact is connected with a feedback signal interface terminal F1 of the proportional amplifier of the first electromagnetic proportional directional valve 12.1, the other end of the other normally-open contact is connected with one pole of a first left cylinder sensor FKA1 of the first left cylinder A1, and the other pole of the first left cylinder sensor FKA1 is connected with a 0 terminal row of the switching power supply.
The first control button SB14.1 of the first PB electromagnetic directional valve 14.1 has two normally-off contacts, one end of one of the normally-off contacts is connected to the 24V + terminal row of the switching power supply, the other end is connected to one pole of the electromagnet DT14.1 of the first PB electromagnetic directional valve 14.1, and the other pole of the electromagnet DT14.1 is connected to the 0 terminal row of the switching power supply; one end of the other normally-open contact is connected with a feedback signal interface terminal F1 of the proportional amplifier of the first electromagnetic proportional directional valve 12.1, the other end of the other normally-open contact is connected with one pole of a first right cylinder sensor FKB1 of the first right cylinder B1, and the other pole of the first right cylinder sensor FKB1 is connected with a 0 terminal bar of the switching power supply.
SB13.2, SB14.2 are the second control buttons of the second PA solenoid directional valve 13.2 and the second PB solenoid directional valve 14.2, respectively, and the second left cylinder a2 and the second right cylinder B2 controlled by the second PA solenoid directional valve 13.2 and the second PB solenoid directional valve 14.2, respectively, have the second left cylinder sensor FKA2 and the second right cylinder sensor FKB2, respectively. The control of the other PA solenoid directional valves 13.3, 13.4, 13.5, 13.6 and PB solenoid directional valves 14.3, 14.4, 14.5, 14.6 is set in the same way.
The electro-hydraulic tool hydraulic system controls the reciprocating reversing and the speed regulation of the oil cylinder through the electromagnetic proportional reversing valve; opening and closing combination is carried out on a plurality of groups of PA electromagnetic directional valves and PB electromagnetic directional valves through a signal processing unit, and the fact that the action sequence of the left oil cylinder and the right oil cylinder can be edited is achieved; the action amplitude of the left oil cylinder and the right oil cylinder can be edited by the interaction of the electromagnetic proportional directional valve and the constant-differential pressure reducing valve; and the signal processing unit is used for combining a plurality of groups of electromagnetic proportional directional valves, a plurality of groups of PA electromagnetic directional valves and a plurality of groups of PB electromagnetic directional valves to realize the integral cooperative control of the electro-hydraulic tool. The specific working principle is as follows:
after the system is started, an oil pump in a pump motor set pumps hydraulic oil in an oil tank into the hydraulic proportion control module through a one-way valve under the driving of a motor; when the pump pressure is abnormally over-high, the safety valve overflows; the hydraulic oil enters or is discharged from the valve island actuator at a certain flow rate through the control of the electromagnetic proportional directional valve, and the fixed-differential pressure reducing valve provides pressure compensation for the valve port in the process.
Taking a first left oil cylinder A1 and a first right oil cylinder B1 in the valve island actuator as an example, when the first PA electromagnetic directional valve 13.1 and the first PB electromagnetic directional valve 14.1 are in a power-off state or a power-on state, the first left oil cylinder A1 and the first right oil cylinder B1 are locked; when the first PA electromagnetic directional valve 13.1 is powered off and the first PB electromagnetic directional valve 14.1 is powered on, the first left oil cylinder A1 is controllable, and the first right oil cylinder B1 is not controllable; when the first PA electromagnetic directional valve 13.1 is powered on and the first PB electromagnetic directional valve 14.1 is powered off, the first left oil cylinder A1 is not controllable, and the first right oil cylinder B1 is controllable; the logic of other left and right oil cylinders is the same. The switching value signals are combined through a computer program to control the PA electromagnetic directional valves and the PB electromagnetic directional valves, the analog quantity signals are combined to control the electromagnetic proportional directional valves, the piston elongation of the unlocked oil cylinder is further controlled, and all oil cylinder locking, single oil cylinder control and editing and cooperation of actions of a plurality of oil cylinders can be achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.

Claims (1)

1. An editable cooperative control electro-hydraulic tool hydraulic system is characterized by comprising an electric control hydraulic power source, a valve island actuator and a signal processing unit; the valve island actuator is connected with the electric control hydraulic power source through a hydraulic rubber pipe, and the signal processing unit is respectively connected with the electric control hydraulic power source and the valve island actuator through control cables; wherein,
the electric control hydraulic power source is skid-mounted and integrated, comprises a pump motor set, an electro-hydraulic proportional control module, an oil tank and a hydraulic auxiliary, and is connected with one another through a hydraulic rubber pipe or a hard pipe row; wherein,
the pump motor set comprises two oil pumps and two motors; oil inlets of the first oil pump and the second oil pump are respectively connected with an oil tank, and the first motor and the second motor are respectively driven to rotate after being electrified, so that electric energy is converted into hydraulic energy;
the electro-hydraulic proportional control module is an oil path block, and three electromagnetic proportional reversing valves, three fixed-differential pressure reducing valves, three energy accumulators, four pressure gauges, a safety valve, a high-pressure oil filter and five one-way valves are integrated on the electro-hydraulic proportional control module; oil outlets of the first oil pump and the second oil pump are respectively connected with oil inlets of the first one-way valve and the second one-way valve; the oil outlets of the first one-way valve and the second one-way valve are divided into three paths, the first path is connected with a first pressure gauge serving as a system pressure gauge, the second path passes through a safety valve and then is combined with a system oil return path to lead to an oil tank, and the third path is connected with an oil inlet of a high-pressure oil filter; the oil outlet of the high-pressure oil filter is divided into three paths after passing through a third one-way valve, the first path is connected with a first energy accumulator and a second pressure gauge, the second path is connected with a valve island actuator after passing through a first reducing valve and a first electromagnetic proportional reversing valve in sequence, and the third path is connected with oil inlets of a fourth one-way valve and a fifth one-way valve respectively; the third check valve, the first energy accumulator, the second pressure gauge, the first constant-pressure-difference pressure-reducing valve and the first electromagnetic proportional directional valve jointly form a first group of electro-hydraulic proportional control oil passages; a fourth check valve, a second energy accumulator, a third pressure gauge, a second constant-pressure-difference pressure-reducing valve and a second electromagnetic proportional directional valve jointly form a second group of electro-hydraulic proportional control oil passages, and the connection mode of the second electro-hydraulic proportional control oil passages is the same as that of the first group of electro-hydraulic proportional control oil passages and is used as an actuator for expanding and controlling a second group of valve islands; a fifth check valve, a third energy accumulator, a fourth pressure gauge, a third fixed-differential pressure reducing valve and a third electromagnetic proportional directional valve jointly form a third group of electro-hydraulic proportional control oil passages, and the connection mode of the third electro-hydraulic proportional control oil passages is the same as that of the first group of electro-hydraulic proportional control oil passages and is used as an actuator for expanding and controlling a third group of valve islands; the connection mode of the second group of electro-hydraulic proportional control oil passages and the third group of electro-hydraulic proportional control oil passages with the valve island actuator is the same as that of the first group of electro-hydraulic proportional control oil passages with the valve island actuator;
the oil tank and the hydraulic auxiliary part comprise a cooler, an oil tank and an oil return filter; the cooler is connected between overflow ports of the first oil pump and the second oil pump and the oil tank, and plays a role in heat dissipation when the oil pumps run; the return oil filter is connected between a main return oil path of the system and the oil tank and plays a role in filtering when the system runs;
the valve island actuator comprises six PA electromagnetic directional valves, six PB electromagnetic directional valves, six left oil cylinders and six right oil cylinders; oil inlets of the six PA electromagnetic directional valves are connected with a first oil outlet of the first electromagnetic proportional directional valve; first oil outlets of the six PA electromagnetic directional valves are respectively connected with the extension oil cavities of the six left oil cylinders, and second oil outlets are respectively connected with the extension oil cavities of the six right oil cylinders; oil inlets of the six PB electromagnetic directional valves are connected with a second oil outlet of the first electromagnetic proportional directional valve; first oil outlets of the six PB electromagnetic directional valves are respectively connected with retracting oil cavities of the six left oil cylinders, and second oil outlets are respectively connected with retracting oil cavities of the six right oil cylinders;
each electromagnetic proportional directional valve, the PA electromagnetic directional valve and the PB electromagnetic directional valve are respectively connected with the signal processing unit through control cables; each left oil cylinder and each right oil cylinder are respectively connected with the signal processing unit through feedback signal cables;
the signal processing unit comprises an AC220V/DC24V switching power supply and valve-loaded proportional amplifiers of three electromagnetic proportional reversing valves; the switching power supply inputs AC220V and outputs DC 24V; each valve-mounted proportional amplifier is provided with a terminal A connected with a 24V + terminal row of the switching power supply, a terminal B connected with a 0 terminal row of the switching power supply, a reserved enabling signal terminal C, a 4-20 mA instruction input terminal D, E, a feedback signal terminal F of a controlled oil cylinder, a proportional amplifier grounding terminal G, and a terminal X and a terminal Y which are connected with an electromagnet between the proportional amplifier and the controlled oil cylinder; the first control button of the first PA electromagnetic directional valve is provided with two normally-off contacts, one end of one normally-off contact is connected with the 24V + terminal row of the switching power supply, the other end of the one normally-off contact is connected with one pole of the electromagnet of the first PA electromagnetic directional valve, and the other pole of the electromagnet is connected with the 0 terminal row of the switching power supply; one end of the other normally-off contact is connected with a feedback signal terminal F of the first electromagnetic proportional reversing valve proportional amplifier, the other end of the other normally-off contact is connected with one pole of a first left oil cylinder sensor of the first left oil cylinder, and the other pole of the first left oil cylinder sensor is connected with a 0 terminal row of the switching power supply;
the first control button of the first PB electromagnetic directional valve is provided with two normally-off contacts, one end of one normally-off contact is connected with a 24V + terminal bar of a switch power supply, the other end of the normally-off contact is connected with one pole of an electromagnet of the first PB electromagnetic directional valve, and the other pole of the electromagnet is connected with a 0 terminal bar of the switch power supply; one end of the other normally-open contact is connected with a feedback signal terminal F of the first electromagnetic proportional reversing valve proportional amplifier, the other end of the other normally-open contact is connected with one pole of a first right oil cylinder sensor of the first right oil cylinder, and the other pole of the first right oil cylinder sensor is connected with a 0 terminal row of the switching power supply; the control of other PA electromagnetic directional valves and PB electromagnetic directional valves adopts the same mode.
CN202210554082.9A 2022-05-19 2022-05-19 Editable cooperative control electro-hydraulic tool hydraulic system Pending CN114922872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210554082.9A CN114922872A (en) 2022-05-19 2022-05-19 Editable cooperative control electro-hydraulic tool hydraulic system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210554082.9A CN114922872A (en) 2022-05-19 2022-05-19 Editable cooperative control electro-hydraulic tool hydraulic system

Publications (1)

Publication Number Publication Date
CN114922872A true CN114922872A (en) 2022-08-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210554082.9A Pending CN114922872A (en) 2022-05-19 2022-05-19 Editable cooperative control electro-hydraulic tool hydraulic system

Country Status (1)

Country Link
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