CN101109398A - Independent control electrohydraulic system of oil inlet and outlet with pump valve composite flux matched - Google Patents
Independent control electrohydraulic system of oil inlet and outlet with pump valve composite flux matched Download PDFInfo
- Publication number
- CN101109398A CN101109398A CNA2007100625173A CN200710062517A CN101109398A CN 101109398 A CN101109398 A CN 101109398A CN A2007100625173 A CNA2007100625173 A CN A2007100625173A CN 200710062517 A CN200710062517 A CN 200710062517A CN 101109398 A CN101109398 A CN 101109398A
- Authority
- CN
- China
- Prior art keywords
- outlet
- hydraulic
- communicated
- bit
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an electro-hydraulic system with matched pump-valve compound flow and independent controlling at oil inlet/outlet, which is characterized in that the output flow of the hydraulic supply is continuously adjusted under control of electronic signals, the flow-matching controller is arranged between a pressure sensor and the oil pipe of the hydraulic supply; an independent oil inlet and outlet controlling valve set comprises two pressure sensor I, II, two 2-position 2-way proportion throttle valve I, II, and two 2-position 2-way electromagnetic directional valve I, II. The invention allows the output flow from the power supply to be always matched with the flow desired by all actuators, so that the oil-intake valve controlling the max. load actuator is fully open, this not only allows each actuator be controlled by the oil inlet and outlet independently, but also can minimize the loss of the system. The innovation in the invention also includes that the flow of the inlet and outlet are detected respectively depending upon the moving direction of the load, flow matching is realized for the system, moving steadiness of the actuators in each direction is guaranteed, and condition for automatic control for industrial control technology especially equipment manufacturing is provided.
Description
Technical field
The present invention relates to the electrohydraulic control system of the flux matched oil inlet and outlet of a kind of pump valve combined-flow, specifically, be in a kind of pump valve electrohydraulic control system the flux matched oil inlet and outlet of a plurality of final controlling element pump valve combined-flow that control individually or simultaneously, that have less restriction loss independently to be controlled electrohydraulic system.
Background technique
Hydraulic actuator comprises oil hydraulic cylinder and oil hydraulic motor, and they all have oil-feed and fuel-displaced two controlled cavity volumes and hydraulic fluid port, adopts the control mode of traditional four limit valve port interlocks, and a certain moment can only be controlled the pressure or the flow of a cavity volume.In adopting the electrohydraulic system of cartridge valve, adopt four two to lead to cartridge valves, one group of oil inlet and outlet of controlling final controlling element respectively in twos is easy to the integrated and modularization of the system that realizes, can control the pressure or the flow in two chambeies simultaneously.But two logical cartridge valves only have switching function, can't carry out continuous control to the actuator motions state, and in order to reduce manufacture cost, such system mainly is used in the occasion of big flow.
Electrohydraulic control system has single final controlling element and multi executors two big classes, compare the linear motion system that its advantage is mainly reflected in multi executors with other drive control mode, to single executive system, through years of researches, be that pump control techniques or valve control techniques have all had very big development, energy efficiency has obtained very large raising, but for the multi executors system, the biggest problem of its sustainable development of restriction at present, application is exactly that energy consumption is bigger, and energy efficiency is low.The load-sensitive technology that is based on the pressure coupling of extensively being approved and obtaining to use by the world at present in such system, other has is exactly the multinational secondary regulation technology based on constant pressure network and hydraulic transformer just under study for action in Europe, but this technology relates to baroque hydraulic transformer and free-piston engine, binomial is mature technique very not also, also is in the development test stage at present.
In the patent of U.S. Caterpillar company application " System and method for contrlling anindependent matering valve USP 960; 695; 1999.10.05 ", adopt the motion of a final controlling element of four electronics proportional throttle valve control, though such technology can be carried out better controlled to single final controlling element, but the measure that makes whole system have high energy efficiency when not providing the working method of system when a plurality of final controlling element is arranged in the system and guaranteeing multi executors, and the advantage of electrohydraulic control technology is mainly reflected in the linear motion system of multi executors.
For prior art is further improved, the principle that oil inlet and outlet is independently controlled is applicable to the multi executors system, and has a high energy efficiency, the output flow that the present invention proposes to make power source is all the time with the required flow of all final controlling element be complementary, make the control principle of the oiling valve standard-sized sheet of controlling high capacity final controlling element, each final controlling element all can be controlled by the principle that oil inlet and outlet is independently controlled, and the restriction loss that can make system drops to minimum, further open one's minds among the present invention and be to detect respectively the flow of import and outlet according to the moving direction of load, realization flow system flow coupling guarantees the stationarity of final controlling element in all directions motion.
Compare with other transmission and control mode, the advantage of electrohydraulic control technology just is the linear motion system of multi executors, but because the difference of load, the maximum deficiency of this system is that energy efficiency is lower, become the maximum difficult point of its sustainable development of restriction, application, so improve the problem that the energy efficiency of this system just becomes this field, pays close attention to the most in the world.
Summary of the invention
The present invention is that the flux matched oil inlet and outlet of a kind of pump valve combined-flow is independently controlled electrohydraulic system, and so that a kind of single final controlling element or multi executors of being used for to be provided, oil hydraulic cylinder two chamber kinematic parameters are independent controlled, and the system hardware structure that the flux matched oil inlet and outlet of pump valve combined-flow that makes system's restriction loss minimum is independently controlled electrohydraulic system is a purpose, low to solve available technology adopting four limit valve port coordinated control system energy efficiencies, control performance is difficult for guaranteeing that oil inlet and outlet independence control technique can only be applicable to the problem of single final controlling element.
The present invention is based on the problems referred to above and purpose, the technological scheme that proposes comprises hydraulic actuator, safety valve, hydraulic power supply, flow matches controller, oil inlet and outlet independence control valve group, the output flow that it is characterized in that hydraulic power supply can be adjusted continuously by electronic signal control, set up the flow matches controller, oil inlet and outlet independence control valve group is by pressure transducer I, pressure transducer II, bi-bit bi-pass proportional throttle valve I, bi-bit bi-pass proportional throttle valve II, bi-bit bi-pass solenoid directional control valve I, bi-bit bi-pass solenoid directional control valve II constitute, and its linkage structure is as follows:
Its Placement 1 is: the import of bi-bit bi-pass proportional throttle valve I is through the hydraulic fluid port P of oil pipe L2 and hydraulic actuator
ABe communicated with, outlet is communicated with fuel tank T, and the import of bi-bit bi-pass proportional throttle valve II is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator
BBe communicated with, outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve I is communicated with the outlet P of hydraulic power supply by oil pipe L1, and outlet is through oil pipe L2 and hydraulic actuator hydraulic fluid port P
ABe communicated with, the filler opening of bi-bit bi-pass solenoid directional control valve II is communicated with the outlet P of hydraulic power supply through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator
BBe communicated with, pressure transducer I is installed in and hydraulic actuator hydraulic fluid port P
AOn the oil pipe L2 that is communicated with, its output signal is connected via wires to the flow matches controller, and pressure transducer II is installed in and hydraulic actuator hydraulic fluid port P
BOn the oil pipe L3 that is communicated with, its output signal is connected to the flow matches controller through lead;
Its Placement 2 is: the import of bi-bit bi-pass proportional throttle valve I is through the hydraulic fluid port P of oil pipe L2 and hydraulic actuator
ABe communicated with, outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass proportional throttle valve II is connected to the outlet P of hydraulic power supply through oil pipe L1, and it exports the hydraulic fluid port P that is connected to hydraulic actuator through oil pipe L2
A, the import of bi-bit bi-pass solenoid directional control valve I is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator
BBe communicated with, its outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve II is communicated with the outlet P of hydraulic power supply through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator
BBe communicated with;
Perhaps oil inlet and outlet independence control valve group is made up of pressure transducer III, three position four-way directional control valve, bi-bit bi-pass proportional throttle valve III.The filler opening of three position four-way directional control valve is communicated with the outlet P of hydraulic power supply through oil pipe L1, and oil outlet A is connected to the hydraulic fluid port P of hydraulic actuator through oil pipe L2
A, oil outlet B is connected to the hydraulic fluid port P of hydraulic actuator through oil pipe L3
B, its return opening t is connected to the bi-bit bi-pass proportional throttle valve through oil pipe L4 outlet is communicated with fuel tank T, and pressure transducer III is installed on the oil pipe L4, and its output signal is connected via wires to the flow matches controller;
Perhaps oil inlet and outlet independence control valve group is made up of pressure transducer I, pressure transducer II, 3-position 4-way proportion directional throttle valve, bi-bit bi-pass solenoid directional control valve I, bi-bit bi-pass solenoid directional control valve II, the filler opening of 3-position 4-way proportion directional throttle valve is communicated with the outlet P of hydraulic power supply through oil pipe L1, and its oil outlet A2 is connected to the hydraulic fluid port P of hydraulic actuator through oil pipe L2
A, its return opening directly is communicated with fuel tank T, and the import of bi-bit bi-pass solenoid directional control valve I is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator
BBe communicated with, its outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve II is communicated with the outlet P of hydraulic power supply through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator
BBe communicated with.
Bi-bit bi-pass proportional throttle valve I described in the technique scheme of the present invention, bi-bit bi-pass proportional throttle valve II, bi-bit bi-pass proportional throttle valve III, bi-bit bi-pass solenoid directional control valve I, bi-bit bi-pass solenoid directional control valve II, 3-position 4-way proportion directional throttle valve, three position four-way directional control valve can be the valves that electromagnet directly drives, it can be the valve of Electromagnetic Control type pilot, also can be that they make up arbitrarily, can also be the valve of internal feedback form, also can be the valve that contains the control of displacement transducer electronic closed loop.
Can have a plurality of hydraulic actuators simultaneously in the system of technique scheme of the present invention, a plurality of oil inlet and outlet independence control valve groups, and have only a hydraulic power supply and a flow matches controller in the system.
The oil hydraulic pump of hydraulic power supply can be the variable-displacement pump of electronics proportional control in the technique scheme of the present invention, it also can be quantitative hydraulic pump, it can be an independent pump, it also can be the combination of top two kinds of pumps, the power source that drives oil hydraulic pump can be the AC induction motor of constant rotational speed, can be AC servo motor, can be switched reluctance machines, also can be explosive motor.Wherein, when oil hydraulic pump is the variable-displacement pump of electronics proportional control, can be the pump of internal feedback type, also can be the electric closed loop proportional pump that has position-detection sensor; When oil hydraulic pump was quantitative hydraulic pump, power source will include revolution speed control device.
Hydraulic actuator described in the technique scheme of the present invention can be the differential hydro cylinder of single rod, can be two rod oil hydraulic cylinders, also can be oil hydraulic motor; Described flow matches controller makes the flow of oil hydraulic pump output equal the total discharge that each hydraulic pressure execution is asked according to the output flow of the rate setting signal control hydraulic power supply of hydraulic actuator.
The flux matched oil inlet and outlet of pump valve combined-flow of the present invention is independently controlled electrohydraulic system and is adopted electrohydraulic control technology, collection microelectronic technology, computer technology, modern control technology and high power hydraulic control technique are one, prior art has been done further improvement, the principle that oil inlet and outlet is independently controlled is applicable to the multi executors system, a plurality of final controlling element in the pump valve electrohydraulic control system independent control or control have simultaneously been carried out, realized the integrated and modularization of system, reduce the consumption of energy in the system, improved the efficient of energy in the system.
The present invention proposes the output flow that makes power source is complementary with the required flow of all final controlling element all the time, make the control principle of the oiling valve standard-sized sheet of controlling high capacity final controlling element, each final controlling element all can be controlled by the principle that oil inlet and outlet is independently controlled, and can make the restriction loss of system drop to minimum.Further opening one's minds in the invention also is to detect respectively according to the moving direction of load the flow of import and outlet, realized the flow matches of system, guaranteed the stationarity of final controlling element in all directions motion, also for industrial control technology particularly the automatic control of equipment manufacture condition is provided.
Description of drawings
Fig. 1 is that the oil inlet and outlet of the embodiment of the invention 1 is independently controlled the electrohydraulic system structural representation
Fig. 2 is that the oil inlet and outlet of the embodiment of the invention 2 is independently controlled the electrohydraulic system structural representation
Fig. 3 is that the oil inlet and outlet of the embodiment of the invention 3 is independently controlled the electrohydraulic system structural representation
Fig. 4 is that the oil inlet and outlet of the embodiment of the invention 4 is independently controlled the electrohydraulic system structural representation
Among the figure: 1: hydraulic actuator 2: safety valve 3: hydraulic power supply 4: flow matches controller 5: oil inlet and outlet independence control valve group 6: pressure sensor I 7: pressure sensor II 8: bi-bit bi-pass proportional throttle valve I 9: bi-bit bi-pass proportional throttle valve II 10: bi-bit bi-pass solenoid directional control valve I 11: bi-bit bi-pass solenoid directional control valve II 12: pressure sensor III 13: three position four-way directional control valve 14: bi-bit bi-pass proportional throttle valve III 15: 3-position 4-way proportion directional throttle valve 16: pressure sensor III
Embodiment
The present invention provides the hardware configuration embodiment that the flux matched oil inlet and outlet of pump valve combined-flow is independently controlled electrohydraulic system below in conjunction with accompanying drawing, and on the hardware configuration basis of this system and device, those skilled in the art is used modern corresponding electrohydraulic control technology easily, microelectronic technology, computer technology, modern control technology and high power hydraulic control technique, the flux matched oil inlet and outlet of realization pump valve combined-flow is independently controlled the automatic control of electrohydraulic system.
Embodiment 1
Among Fig. 1, implement the flux matched oil inlet and outlet of pump valve combined-flow of the present invention and independently control electrohydraulic system, comprise hydraulic actuator 1, safety valve 2, hydraulic power supply 3, flow matches controller 4, oil inlet and outlet independence control valve group 5, the output flow that its pump valve electrohydraulic system formation is a hydraulic power supply 3 can be adjusted continuously by electronic signal control, set up flow matches controller 4, oil inlet and outlet independence control valve group 5 is by pressure transducer I6, pressure transducer II7, bi-bit bi-pass proportional throttle valve I8, bi-bit bi-pass proportional throttle valve II9, bi-bit bi-pass solenoid directional control valve I10 and bi-bit bi-pass solenoid directional control valve II11 form.
Wherein: the import of bi-bit bi-pass proportional throttle valve I8 is through the hydraulic fluid port P of oil pipe L2 and hydraulic actuator 1
ABe communicated with, outlet is communicated with fuel tank T, and the import of bi-bit bi-pass proportional throttle valve II9 is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator 1
BBe communicated with, outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve I10 is communicated with the outlet P of hydraulic power supply 3 by oil pipe L1, and outlet is through oil pipe L2 and hydraulic actuator 1 hydraulic fluid port P
ABe communicated with, the filler opening of bi-bit bi-pass solenoid directional control valve II11 is communicated with the outlet P of hydraulic power supply 3 through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator 1
BBe communicated with, pressure transducer I6 is installed in and hydraulic actuator 1 hydraulic fluid port P
AOn the oil pipe L2 that is communicated with, its output signal is connected via wires to flow matches controller 4, and pressure transducer II7 is installed in and hydraulic actuator 1 hydraulic fluid port P
BOn the oil pipe L3 that is communicated with, its output signal is connected to flow matches controller 4 through lead.
Embodiment 2
Among Fig. 2, implement the flux matched oil inlet and outlet of pump valve combined-flow of the present invention and independently control electrohydraulic system, comprise hydraulic actuator 1, safety valve 2, hydraulic power supply 3, flow matches controller 4, oil inlet and outlet independence control valve group 5, the output flow that its pump valve electrohydraulic system formation is a hydraulic power supply 3 can be adjusted continuously by electronic signal control, set up flow matches controller 4, oil inlet and outlet independence control valve group 5 is by pressure transducer I6, pressure transducer II7, bi-bit bi-pass proportional throttle valve I8, bi-bit bi-pass proportional throttle valve II9, bi-bit bi-pass solenoid directional control valve I10 and bi-bit bi-pass solenoid directional control valve II11 form.
Wherein, person's oil inlet and outlet independence control valve group 5 is made up of pressure transducer I6, pressure transducer II7,3-position 4-way proportion directional throttle valve 15, bi-bit bi-pass solenoid directional control valve I10, bi-bit bi-pass solenoid directional control valve II11, the filler opening of 3-position 4-way proportion directional throttle valve 15 is communicated with the outlet P of hydraulic power supply 3 through oil pipe L1, and its oil outlet A2 is connected to the hydraulic fluid port P of hydraulic actuator 1 through oil pipe L2
A, its return opening directly is communicated with fuel tank T, and the import of bi-bit bi-pass solenoid directional control valve I10 is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator 1
BBe communicated with, its outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve II11 is communicated with the outlet P of hydraulic power supply 3 through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator 1
BBe communicated with.
Among Fig. 3, mode according to embodiment 2, oil inlet and outlet independence control valve group 5 is made up of pressure transducer III12, three position four-way directional control valve 13, bi-bit bi-pass proportional throttle valve III14, the filler opening of three position four-way directional control valve 13 is communicated with the outlet P of hydraulic power supply 3 through oil pipe L1, and oil outlet A is connected to the hydraulic fluid port P of hydraulic actuator 1 through oil pipe L2
A, oil outlet B is connected to the hydraulic fluid port P of hydraulic actuator 1 through oil pipe L3
B, its return opening t is connected to the bi-bit bi-pass proportional throttle valve through oil pipe L4 outlet is communicated with fuel tank T, and pressure transducer III12 is installed on the oil pipe L4, and its output signal is connected via wires to flow matches controller 4;
Embodiment 4
Among Fig. 4, according to embodiment 2 mode, with the import process oil pipe L2 of bi-bit bi-pass proportional throttle valve I8 and the hydraulic fluid port P of hydraulic actuator 1
ABe communicated with, outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass proportional throttle valve II 9 is connected to the outlet P of hydraulic power supply 3 through oil pipe L1, and it exports the hydraulic fluid port P that is connected to hydraulic actuator 1 through oil pipe L2
A, the import of bi-bit bi-pass solenoid directional control valve I10 is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator 1
BBe communicated with, its outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve II11 is communicated with the outlet P of hydraulic power supply 3 through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator 1
BBe communicated with;
In the above embodiment of the present invention 1,2,3 and 4, the hydraulic actuator 1 in the described system can be the differential hydro cylinder of single rod, also can be two rod oil hydraulic cylinders, also can be oil hydraulic motor; Described bi-bit bi-pass proportional throttle valve I 8, bi-bit bi-pass proportional throttle valve II9, bi-bit bi-pass proportional throttle valve III14, bi-bit bi-pass solenoid directional control valve I10, bi-bit bi-pass solenoid directional control valve II11,3-position 4-way proportion directional throttle valve 15, three position four-way directional control valve 13 can be the valves that electromagnet directly drives, it also can be the valve of Electromagnetic Control type pilot, also can be that they make up arbitrarily, also can be the valve of internal feedback form, also can be the valve that contains the control of displacement transducer electronic closed loop.
All having a group or more hydraulic actuator 1 and oil inlet and outlet independence control valve group 5 described in the above embodiment of the present invention 1,2,3 and 4 in the system, also can be to have one group of hydraulic power supply 3 and flow matches controller 4.
When the oil hydraulic pump of the power source 3 described in the above embodiment of the present invention 1,2,3 and 4 in the system can be the variable-displacement pump of electronics proportional control, also can be quantitative hydraulic pump, also can be the combination of a plurality of pumps or multiple pump; The power source that drives oil hydraulic pump can be the AC induction motor of constant rotational speed, also can be AC servo motor, also can be switched reluctance machines, also can be explosive motor.
Wherein, when oil hydraulic pump was the variable-displacement pump of electronics proportional control, power source 3 can be the internal feedback pump, also can be the electric closed loop proportional pump that has position-detection sensor; When oil hydraulic pump was quantitative hydraulic pump, power source 3 had revolution speed control device.
Flow matches controller 4 described in the above embodiment of the present invention 1,2,3 and 4 in the system is the output flows according to the rate setting signal control hydraulic power supply 3 of hydraulic actuator 1, makes the flow of oil hydraulic pump output equal the total discharge that each hydraulic pressure execution is asked.
Claims (8)
1. the flux matched oil inlet and outlet of pump valve combined-flow is independently controlled electrohydraulic system, it contains hydraulic actuator (1), safety valve (2), hydraulic power supply (3), flow matches controller (4), oil inlet and outlet independence control valve group (5), the output flow that it is characterized in that hydraulic power supply (3) can be adjusted continuously by electronic signal control, set up flow matches controller (4), oil inlet and outlet independence control valve group (5) is by pressure transducer I (6), pressure transducer II (7), bi-bit bi-pass proportional throttle valve I (8), bi-bit bi-pass proportional throttle valve II (9), bi-bit bi-pass solenoid directional control valve I (10) and bi-bit bi-pass solenoid directional control valve II (11) constitute, and its linkage structure is as follows:
Its Placement 1 is: the import of bi-bit bi-pass proportional throttle valve I (8) is through the hydraulic fluid port P of oil pipe L2 and hydraulic actuator (1)
ABe communicated with, outlet is communicated with fuel tank T, and the import of bi-bit bi-pass proportional throttle valve II (9) is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator (1)
BBe communicated with, outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve I (10) is communicated with the outlet P of hydraulic power supply (3) by oil pipe L1, and outlet is through oil pipe L2 and hydraulic actuator (1) hydraulic fluid port P
ABe communicated with, the filler opening of bi-bit bi-pass solenoid directional control valve II (11) is communicated with the outlet P of hydraulic power supply (3) through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator (1)
BBe communicated with, pressure transducer I (6) is installed in and hydraulic actuator (1) hydraulic fluid port P
AOn the oil pipe L2 that is communicated with, its output signal is connected via wires to flow matches controller (4), and pressure transducer II (7) is installed in and hydraulic actuator (1) hydraulic fluid port P
BOn the oil pipe L3 that is communicated with, its output signal is connected to flow matches controller (4) through lead;
Its Placement 2 is: the import of bi-bit bi-pass proportional throttle valve I (8) is through the hydraulic fluid port P of oil pipe L2 and hydraulic actuator (1)
ABe communicated with, outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass proportional throttle valve II (9) is connected to the outlet P of hydraulic power supply (3) through oil pipe L1, and it exports the hydraulic fluid port P that is connected to hydraulic actuator (1) through oil pipe L2
A, the import of bi-bit bi-pass solenoid directional control valve I (10) is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator (1)
BBe communicated with, its outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve II (11) is communicated with the outlet P of hydraulic power supply (3) through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator (1)
BBe communicated with;
Perhaps oil inlet and outlet independence control valve group (5) is made up of pressure transducer III (12), three position four-way directional control valve (13), bi-bit bi-pass proportional throttle valve III (14), the filler opening of three position four-way directional control valve (13) is communicated with the outlet P of hydraulic power supply (3) through oil pipe L1, and oil outlet A is connected to the hydraulic fluid port P of hydraulic actuator (1) through oil pipe L2
A, oil outlet B is connected to the hydraulic fluid port P of hydraulic actuator (1) through oil pipe L3
B, its return opening t is connected to the bi-bit bi-pass proportional throttle valve through oil pipe L4 outlet is communicated with fuel tank T, and pressure transducer III (12) is installed on the oil pipe L4, and its output signal is connected via wires to flow matches controller (4);
Perhaps oil inlet and outlet independence control valve group (5) is made up of pressure transducer I (6), pressure transducer II (7), 3-position 4-way proportion directional throttle valve (15), bi-bit bi-pass solenoid directional control valve I (10), bi-bit bi-pass solenoid directional control valve II (11), the filler opening of 3-position 4-way proportion directional throttle valve (15) is communicated with the outlet P of hydraulic power supply (3) through oil pipe L1, and its oil outlet A2 is connected to the hydraulic fluid port P of hydraulic actuator (1) through oil pipe L2
A, its return opening directly is communicated with fuel tank T, and the import of bi-bit bi-pass solenoid directional control valve I (10) is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator (1)
BBe communicated with, its outlet is communicated with fuel tank T, and the filler opening of bi-bit bi-pass solenoid directional control valve II (11) is communicated with the outlet P of hydraulic power supply (3) through oil pipe L1, and outlet is through the hydraulic fluid port P of oil pipe L3 and hydraulic actuator (1)
BBe communicated with.
2. the flux matched oil inlet and outlet of pump valve combined-flow according to claim 1 is independently controlled electrohydraulic system, it is characterized in that bi-bit bi-pass proportional throttle valve I (8), bi-bit bi-pass proportional throttle valve II (9), bi-bit bi-pass proportional throttle valve III (14), bi-bit bi-pass solenoid directional control valve I (10), bi-bit bi-pass solenoid directional control valve II (11), 3-position 4-way proportion directional throttle valve (15), three position four-way directional control valve (13) can be the valve that electromagnet directly drives, it can be the valve of Electromagnetic Control type pilot, also can be that they make up arbitrarily, can also be the valve of internal feedback form, also can be the valve that contains the control of displacement transducer electronic closed loop.
3. the flux matched oil inlet and outlet of pump valve combined-flow according to claim 1 is independently controlled electrohydraulic system, it is characterized in that system can have a plurality of hydraulic actuators (1) simultaneously, a plurality of oil inlet and outlet independence control valve groups (5), and have only a hydraulic power supply (3) and a flow matches controller (4) in the system.
4. the flux matched oil inlet and outlet of pump valve combined-flow according to claim 1 is independently controlled electrohydraulic system, the oil hydraulic pump that it is characterized in that hydraulic power supply (3) can be the variable-displacement pump of electronics proportional control, it also can be quantitative hydraulic pump, it can be an independent pump, also can be the combination of top two kinds of pumps, the power source that drives oil hydraulic pump can be the AC induction motor of constant rotational speed, can be AC servo motor, can be switched reluctance machines, also can be explosive motor.
5. the flux matched oil inlet and outlet of pump valve combined-flow according to claim 4 is independently controlled electrohydraulic system, when the oil hydraulic pump that it is characterized in that hydraulic power supply (3) is the variable-displacement pump of electronics proportional control, can be the pump of internal feedback type, also can be the electric closed loop proportional pump that has position-detection sensor.
6. the flux matched oil inlet and outlet of pump valve combined-flow according to claim 4 is independently controlled electrohydraulic system, and when the oil hydraulic pump that it is characterized in that hydraulic power supply (3) was quantitative hydraulic pump, power source will include revolution speed control device.
7. the flux matched oil inlet and outlet of pump valve combined-flow according to claim 1 is independently controlled electrohydraulic system, it is characterized in that hydraulic actuator (1) can be the differential hydro cylinder of single rod, can be two rod oil hydraulic cylinders, also can be oil hydraulic motor.
8. the flux matched oil inlet and outlet of pump valve combined-flow according to claim 1 is independently controlled electrohydraulic system, it is characterized in that the output flow of flow matches controller (4), make the flow of oil hydraulic pump output equal the total discharge that each hydraulic pressure execution is asked according to the rate setting signal control hydraulic power supply (3) of hydraulic actuator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100625173A CN100491748C (en) | 2007-08-01 | 2007-08-01 | Independent control electrohydraulic system of oil inlet and outlet matching with pump valve composite flux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100625173A CN100491748C (en) | 2007-08-01 | 2007-08-01 | Independent control electrohydraulic system of oil inlet and outlet matching with pump valve composite flux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101109398A true CN101109398A (en) | 2008-01-23 |
| CN100491748C CN100491748C (en) | 2009-05-27 |
Family
ID=39041603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100625173A Active CN100491748C (en) | 2007-08-01 | 2007-08-01 | Independent control electrohydraulic system of oil inlet and outlet matching with pump valve composite flux |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100491748C (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102139830A (en) * | 2011-01-27 | 2011-08-03 | 天津山河装备开发有限公司 | Load-sensitive double-power control device suitable for crawler crane |
| CN102305223A (en) * | 2011-05-16 | 2012-01-04 | 江门市蒙德电气有限公司 | Hydraulic control device and control method thereof |
| CN102414395A (en) * | 2009-04-29 | 2012-04-11 | 长年Tm公司 | Valve system for drilling systems |
| CN102619803A (en) * | 2012-03-31 | 2012-08-01 | 中联重科股份有限公司 | Parallel valve group, hydraulic control loop and auxiliary device |
| CN102635585A (en) * | 2012-03-31 | 2012-08-15 | 中联重科股份有限公司 | Valve group, hydraulic control loop and auxiliary device for mounting or dismounting parts |
| CN102915049A (en) * | 2012-10-30 | 2013-02-06 | 青岛同辉汽车技术有限公司 | Pressure control device of compression refuse collector |
| CN103649556A (en) * | 2011-07-12 | 2014-03-19 | 沃尔沃建造设备有限公司 | Hydraulic actuator damping control system for construction machinery |
| CN103924629A (en) * | 2014-04-15 | 2014-07-16 | 中国人民解放军63983部队 | Hydraulic excavator driving system with potential energy recovery function |
| CN104154053A (en) * | 2014-07-18 | 2014-11-19 | 国家电网公司 | Main-cylinder hydraulic loop system |
| CN104564915A (en) * | 2015-01-28 | 2015-04-29 | 太原理工大学 | Pump-valve composite two-degree-of-freedom electro-hydraulic motion loading control method |
| CN105134684A (en) * | 2015-10-10 | 2015-12-09 | 中国重型机械研究院股份公司 | Logic oil duct control system with electromagnetic switch valves and failure autodiagnosis method |
| CN105358844A (en) * | 2013-04-22 | 2016-02-24 | 派克汉尼芬公司 | Method for controlling pressure in a hydraulic actuator |
| CN105458857A (en) * | 2015-12-30 | 2016-04-06 | 浙江万丰科技开发股份有限公司 | Constant force compensation device |
| CN105570203A (en) * | 2016-01-12 | 2016-05-11 | 浙江大学 | Efficient and high-precision hydraulic control system adopting combination of pump and valve |
| CN107059983A (en) * | 2017-04-10 | 2017-08-18 | 太原理工大学 | Minus flow imports and exports independent composite control hydraulic system |
| CN107429715A (en) * | 2015-03-13 | 2017-12-01 | 川崎重工业株式会社 | Oil hydraulic system |
| CN107588150A (en) * | 2017-10-19 | 2018-01-16 | 燕山大学 | Especially big load hydraulic bjuffer |
| CN108591137A (en) * | 2018-07-12 | 2018-09-28 | 西南交通大学 | A kind of novel robot hydraulic knuckle drive system |
| CN108895040A (en) * | 2018-05-25 | 2018-11-27 | 太原理工大学 | A kind of perpendicular device of the act of liquid electricity combination drive |
| CN110714941A (en) * | 2019-10-11 | 2020-01-21 | 燕山大学 | Pump valve composite cylinder control force control and valve control cylinder position control combined loading device and control method |
| WO2020113952A1 (en) * | 2018-12-03 | 2020-06-11 | 三一汽车制造有限公司 | Pumping mechanical hydraulic system |
| CN111734877A (en) * | 2020-07-09 | 2020-10-02 | 四川航天烽火伺服控制技术有限公司 | Ball valve actuator |
| CN113202833A (en) * | 2021-05-24 | 2021-08-03 | 华东交通大学 | Load port independent control system matched with electro-hydraulic flow |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090144A (en) * | 2015-09-14 | 2015-11-25 | 太原科技大学 | Pre-loaded large-applied-force hydraulic system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2324899A1 (en) * | 1974-01-14 | 1977-04-15 | Poclain Sa | HYDRAULIC INSTALLATION ALLOWING ENERGY STORAGE AT LOW USING POWER |
-
2007
- 2007-08-01 CN CNB2007100625173A patent/CN100491748C/en active Active
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102414395A (en) * | 2009-04-29 | 2012-04-11 | 长年Tm公司 | Valve system for drilling systems |
| CN102414395B (en) * | 2009-04-29 | 2015-03-11 | 长年Tm公司 | Valve system for drilling systems |
| CN102139830A (en) * | 2011-01-27 | 2011-08-03 | 天津山河装备开发有限公司 | Load-sensitive double-power control device suitable for crawler crane |
| CN102139830B (en) * | 2011-01-27 | 2012-11-07 | 天津山河装备开发有限公司 | Load-sensitive double-power control device suitable for crawler crane |
| CN102305223A (en) * | 2011-05-16 | 2012-01-04 | 江门市蒙德电气有限公司 | Hydraulic control device and control method thereof |
| CN103649556A (en) * | 2011-07-12 | 2014-03-19 | 沃尔沃建造设备有限公司 | Hydraulic actuator damping control system for construction machinery |
| CN103649556B (en) * | 2011-07-12 | 2016-10-26 | 沃尔沃建造设备有限公司 | Hydraulic actuator damped control system for construction machinery |
| CN102619803B (en) * | 2012-03-31 | 2014-11-19 | 中联重科股份有限公司 | Parallel valve group, hydraulic control loop and auxiliary device |
| CN102635585B (en) * | 2012-03-31 | 2015-08-05 | 中联重科股份有限公司 | Valve group, hydraulic control loop and auxiliary device for mounting or dismounting parts |
| CN102635585A (en) * | 2012-03-31 | 2012-08-15 | 中联重科股份有限公司 | Valve group, hydraulic control loop and auxiliary device for mounting or dismounting parts |
| CN102619803A (en) * | 2012-03-31 | 2012-08-01 | 中联重科股份有限公司 | Parallel valve group, hydraulic control loop and auxiliary device |
| CN102915049A (en) * | 2012-10-30 | 2013-02-06 | 青岛同辉汽车技术有限公司 | Pressure control device of compression refuse collector |
| US9670943B2 (en) | 2013-04-22 | 2017-06-06 | Parker-Hannifin Corporation | Method for controlling pressure in a hydraulic actuator |
| CN105358844A (en) * | 2013-04-22 | 2016-02-24 | 派克汉尼芬公司 | Method for controlling pressure in a hydraulic actuator |
| CN105358844B (en) * | 2013-04-22 | 2017-05-24 | 派克汉尼芬公司 | Method for controlling pressure in a hydraulic actuator |
| CN103924629A (en) * | 2014-04-15 | 2014-07-16 | 中国人民解放军63983部队 | Hydraulic excavator driving system with potential energy recovery function |
| CN104154053A (en) * | 2014-07-18 | 2014-11-19 | 国家电网公司 | Main-cylinder hydraulic loop system |
| CN104564915A (en) * | 2015-01-28 | 2015-04-29 | 太原理工大学 | Pump-valve composite two-degree-of-freedom electro-hydraulic motion loading control method |
| CN107429715A (en) * | 2015-03-13 | 2017-12-01 | 川崎重工业株式会社 | Oil hydraulic system |
| CN105134684A (en) * | 2015-10-10 | 2015-12-09 | 中国重型机械研究院股份公司 | Logic oil duct control system with electromagnetic switch valves and failure autodiagnosis method |
| CN105458857A (en) * | 2015-12-30 | 2016-04-06 | 浙江万丰科技开发股份有限公司 | Constant force compensation device |
| CN105570203A (en) * | 2016-01-12 | 2016-05-11 | 浙江大学 | Efficient and high-precision hydraulic control system adopting combination of pump and valve |
| CN107059983A (en) * | 2017-04-10 | 2017-08-18 | 太原理工大学 | Minus flow imports and exports independent composite control hydraulic system |
| CN107588150A (en) * | 2017-10-19 | 2018-01-16 | 燕山大学 | Especially big load hydraulic bjuffer |
| CN108895040A (en) * | 2018-05-25 | 2018-11-27 | 太原理工大学 | A kind of perpendicular device of the act of liquid electricity combination drive |
| CN108895040B (en) * | 2018-05-25 | 2019-11-15 | 太原理工大学 | A kind of perpendicular device of the act of liquid electricity combination drive |
| CN108591137A (en) * | 2018-07-12 | 2018-09-28 | 西南交通大学 | A kind of novel robot hydraulic knuckle drive system |
| WO2020113952A1 (en) * | 2018-12-03 | 2020-06-11 | 三一汽车制造有限公司 | Pumping mechanical hydraulic system |
| CN110714941A (en) * | 2019-10-11 | 2020-01-21 | 燕山大学 | Pump valve composite cylinder control force control and valve control cylinder position control combined loading device and control method |
| CN111734877A (en) * | 2020-07-09 | 2020-10-02 | 四川航天烽火伺服控制技术有限公司 | Ball valve actuator |
| CN113202833A (en) * | 2021-05-24 | 2021-08-03 | 华东交通大学 | Load port independent control system matched with electro-hydraulic flow |
| CN113202833B (en) * | 2021-05-24 | 2023-02-24 | 华东交通大学 | Load port independent control system matched with electro-hydraulic flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100491748C (en) | 2009-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100491748C (en) | Independent control electrohydraulic system of oil inlet and outlet matching with pump valve composite flux | |
| CN102588358B (en) | High-performance energy saving type electro-hydraulic servo control oil line | |
| CN113202833B (en) | Load port independent control system matched with electro-hydraulic flow | |
| CN1821574A (en) | Low idling energy consumption hydraulic power source | |
| CN104806588B (en) | Dual-pump flow-converging hydraulic control system | |
| CN109630504B (en) | Oil inlet and outlet independent control system with pressure compensation function | |
| WO2023092667A1 (en) | Hydraulic system with electro-proportional control multi-working-position valve, and control method thereof | |
| CN107143540B (en) | Digital load sensing hydraulic control system and method | |
| CN208185095U (en) | Load port based on single side outlet throttling control valve group/discharge capacity autonomous control system | |
| CN107059983B (en) | Minus flow imports and exports independent composite control hydraulic system | |
| CN102588359A (en) | Hydraulic system, excavator and control method of hydraulic system | |
| CN108591144B (en) | Hydraulic system of motor-driven double-dosing pump double-accumulator distributed direct-drive excavator | |
| CN201588926U (en) | Motor-driven electrohydraulic control system of continuously variable transmission | |
| CN101788052B (en) | Motor driven CVT (continuously variable transmission) electro-hydraulic control system | |
| CN103470578A (en) | Direct driving type differential volume control electro-hydraulic servo control system | |
| CN208330867U (en) | A kind of distributed direct drive excavator hydraulic system of servo motor driving bivariate pump | |
| CN101865172B (en) | Active piloted active servo proportional valve | |
| CN107061382B (en) | Positive flow imports and exports independent composite control hydraulic system | |
| CN110671376B (en) | Engineering machinery load sensitive-inlet-outlet independent hydraulic system and control method thereof | |
| CN110425276B (en) | High-speed switch valve pilot control's buncher electricity liquid control system | |
| CN103924629A (en) | Hydraulic excavator driving system with potential energy recovery function | |
| CN102587445A (en) | Load sensing flow control hydraulic system with energy regeneration and conservation | |
| CN108343649A (en) | Load port based on single side outlet throttling control valve group/discharge capacity autonomous control system | |
| CN114955868A (en) | Load port independent control valve, hoisting machinery hydraulic system and working method thereof | |
| CN203685727U (en) | Sandbeach sanitation vehicle proportional hydraulic control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |