CN107503998B - Back pressure and dynamicliquid pressure conglomerate integration regulate and control multi executors system - Google Patents
Back pressure and dynamicliquid pressure conglomerate integration regulate and control multi executors system Download PDFInfo
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- CN107503998B CN107503998B CN201710830469.1A CN201710830469A CN107503998B CN 107503998 B CN107503998 B CN 107503998B CN 201710830469 A CN201710830469 A CN 201710830469A CN 107503998 B CN107503998 B CN 107503998B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- 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
- 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
- F15B21/08—Servomotor systems incorporating electrically operated control 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20546—Type of pump variable capacity
-
- 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
- F15B2211/50—Pressure control
- F15B2211/57—Control of a differential pressure
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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
A kind of back pressure and dynamicliquid pressure conglomerate integration regulate and control multi executors system, have additional hydrodynamic regulation unit, back pressure regulates and controls unit, controller, switchover control valve, hydraulic control one-way valve and pressure sensor, utilize energy regeneration structure, control the back oil cavity pressure of each actuator other than highest load, keep the pressure difference of each actuator oil suction chamber and control valve port identical, the pressure and flow for making hydraulic pump are matched with each hydraulic actuator, multi executors system throttles caused by load variations are eliminated to lose, and regulate and control the operating point of power source by the back oil cavity pressure of control actuator, regulate and control unit and the nonrigid connection of power source, hydraulic hybrid function is further expanded to action potential to recycle, reduce throttling loss, energy-saving effect is effectively promoted, shorten investment return period, conducive to popularization and application.
Description
Technical field
The present invention relates to a kind of control systems of multi executors in hydraulic control technology, especially a kind of to be used for engineer equipment
Power matching and the electrohydraulic control technology for reducing the loss of multi executors system pressure difference.
Background technique
Currently, the non-rice habitats such as various types engineering machinery, road building machine, mining machinery, forestry machinery and agricultural machinery move
Dynamic equipment, generallys use the hydraulic pump as power source of internal combustion engine drives, through multi-way valve and pipeline distribution and transmitting power, control
The hydraulic system of multiple actuator composite moves, this is also that hydraulic technique is most widely used, most important field, and feature is power
High, compact-sized, the handling good and environmental suitability of density is strong, but fatal deficiency is that capacity usage ratio is low, and complete machine efficiency only has
20% or so.Studies have shown that the loss of control valve port significant energy, engine work long hours in inefficient area and action potential
The energy dissipation of conversion process is to cause that engineer equipment installed power is big, fuel consumption is big, discharge difference and serious of fever
Source, the energy dissipation that wherein control valve generates are the most serious.In published patent of invention " using the energy conservation of load-sensitive technology
Type shield segment assembling positions electrohydraulic control system, and CN103032396A " for multi executors system often there is load to change
The wide feature of range makes the output pressure of hydraulic pump that load be followed to change and change always by using Ioad-sensing control principle
Become, avoids original system always with energy dissipation caused by maximum working pressure fuel feeding, reduce restriction loss and overflow
Loss, but match since the output pressure of pump can only be loaded with highest, and for multi executors system, larger load variations institute
Causing the restriction loss of low-load actuator control valves can not eliminate always, and exactly multi executors system is most for this partial loss
Main energy consumption source, accounts for the 35% ~ 39% of engine output.
In addition, engineering machinery load wide variation in actual operation, power source is caused to often operate in inefficient
Working region increases the discharge and energy consumption of power source, and therefore, it is necessary to the situations of change according to load, using torque couple side
Formula adds the power source of other forms, matches to original power source, such as the dynamoelectric machine of oil electric mixed dynamic mode
Or the hydraulic pump/motor of hydraulic hybrid mode absorbs main power source in low load working condition auxiliary power source as loading
Power, so that the efficiency of main power source is promoted, and under big load operating condition, auxiliary power source discharges absorbed energy and auxiliary
Main power source drives load to do work together, but existing hybrid power mode, and the energy that auxiliary power source provides will pass through control valve
Second throttle generate loss, and function be only match engine operating point, after adding this unit, the cost of complete machine
It will increase many, and the cost recovery period is longer, restrict and promote and apply.
Summary of the invention
For multi executors systems such as above-mentioned existing load-sensitives there is deficiency, the present invention provides a kind of back pressure and power
Hydraulic hybrid integration regulates and controls multi executors system, utilizes structure using energy regeneration, controls each other than highest load
The back oil cavity pressure of actuator, to keep the pressure of each actuator oil suction chamber all identical, even if the pressure difference of all control valve ports
It is all identical, it matches the pressure of hydraulic pump and flow all with each hydraulic actuator, eliminates multi executors caused by load variations
System throttles loss, this system can also regulate and control the operating point of power source by the back oil cavity pressure of control actuator, and adjust
Control unit nonrigid can be connected with power source, by hydraulic hybrid function further expand to action potential recycle with
Return period is invested in reduction throttling loss, significant increase energy-saving effect and shortening, is conducive to promote and apply.
To achieve the goals above, the technical scheme is that a kind of back pressure and the regulation of dynamicliquid pressure conglomerate integration
Multi executors system includes: power source, Main Hydraulic Pump, transfer case, safety valve, the first hydraulic actuator, the second hydraulic execution
Device, third hydraulic actuator, the first control valve, the second control valve and third control valve；It is characterized by:
It further has additional: hydrodynamic regulation unit, the first back pressure regulation unit, the second back pressure regulation unit, controller the
One switchover control valve, the second switchover control valve, third switchover control valve, the first hydraulic control one-way valve G1, the second hydraulic control one-way valve G2,
Third hydraulic control one-way valve G3, first pressure sensor, second pressure sensor, third pressure sensor, the 4th pressure sensor,
5th pressure sensor and the 6th pressure sensor；
The actuator port of first control valve is connected to the actuator port of the first hydraulic actuator respectively；Second control valve
Actuator port be connected to respectively with the actuator port of the second hydraulic actuator；The actuator port of third control valve respectively with third liquid
Press the actuator port connection of actuator；The oil outlet of Main Hydraulic Pump respectively with the first control valve, the second control valve third control valve
Oil inlet connection, the oil return opening of the first control valve is connected to the oil outlet of the first hydraulic control one-way valve G1, the second control valve out
Hydraulic fluid port is connected to the oil outlet of the second hydraulic control one-way valve G2, and the oil outlet of third control valve is fuel-displaced with third hydraulic control one-way valve G3's
Mouth connection；The output shaft of power source is connect with transfer case, and the input shaft of Main Hydraulic Pump is connect with transfer case；First switchover control valve
Hydraulic fluid port A1 and hydraulic fluid port B1 be connected to respectively with the actuator port of the first hydraulic actuator, the hydraulic fluid port A2 and oil of the second switchover control valve
Mouthful B2 is connected to the actuator port of the second hydraulic actuator respectively, and the hydraulic fluid port A3 and hydraulic fluid port B3 of third switchover control valve are respectively with the
The actuator port of three hydraulic actuators is connected to；First pressure sensor, second pressure sensor respectively with the first hydraulic actuator
Actuator port connection, third pressure sensor, the 4th pressure sensor respectively with the actuator port of the second hydraulic actuator connect
Logical, the 5th pressure sensor, the 6th pressure sensor is connected to the actuator port of third hydraulic actuator respectively；All pressure pass
Sensor, displacement sensor, speed probe output signal be all connected to controller, these signals are given after controller operation
The first control valve, the second control valve, third control valve, the first switchover control valve, the second switchover control valve, third conversion are controlled out
The signal of control valve and rotational speed governor movement.
A further technical solution lies in: the first back pressure regulation unit is identical as the second back pressure regulation cellular construction,
It include back pressure regulation hydraulic pump/motor I, back pressure regulation hydraulic pump/motor II, back pressure regulation accumulator I, back pressure regulation accumulation of energy
Device II, repairing check valve, the 7th pressure sensor, the 8th pressure sensor, the first displacement sensor, speed probe and second
Displacement sensor；
First back pressure regulates and controls in unit: back pressure regulates and controls the hydraulic fluid port P1 of hydraulic pump/motor I and the hydraulic fluid port of the first switchover control valve
The hydraulic fluid port R2 of R1 and the second switchover control valve connection, back pressure regulates and controls the hydraulic fluid port P2 of hydraulic pump/motor I and back pressure regulates and controls accumulator I
Oil inlet, the 7th pressure sensor, repairing check valve oil outlet connection, speed probe detect back pressure regulate and control hydraulic pump/horse
Up to I revolving speed, the first displacement sensor detects the pivot angle of back pressure regulation hydraulic pump/motor I；Back pressure regulates and controls hydraulic pump/motor I and back
Pressure regulation hydraulic pump/motor II is coaxially connected, they connect or be not connected to transfer case, and back pressure regulation hydraulic pump/motor II goes out
Hydraulic fluid port and the 8th pressure sensor, back pressure regulation II oil inlet of accumulator connects, back pressure regulate and control II oil outlet of hydraulic pump/motor and
Fuel tank connection, second displacement sensor detect the discharge capacity of back pressure regulation hydraulic pump/motor II；
Second back pressure regulates and controls in unit: back pressure regulates and controls the hydraulic fluid port P1 of hydraulic pump/motor I and the hydraulic fluid port of third switchover control valve
R3 connection；The drive shaft of back pressure regulation hydraulic pump/motor I and back pressure regulation hydraulic pump/motor II is not connect with transfer case, remaining
Structural relation is identical as the first back pressure regulation unit.
Further technical solution also resides in: when the hydrodynamic regulation unit is electrical adjusted and controlled, hydrodynamic regulation list
Member includes hydrodynamic regulation dynamoelectric machine, rotational speed governor, bidirectional DC-DC converter, supercapacitor and power switch；
Hydrodynamic regulation dynamoelectric machine drive shaft is connect with transfer case, one end of bidirectional DC-DC converter and the direct current of rotational speed governor
Bus connection, the other end of bidirectional DC-DC converter are connect with supercapacitor, the input terminal and power switch of rotational speed governor
Connection.
Further technical solution also resides in: when the hydrodynamic regulation unit is hydraulic regulating mode, comprising dynamic
Regulate and control hydraulic pump/motor, hydrodynamic regulation accumulator, the 9th pressure sensor and third displacement sensor；Hydrodynamic regulation hydraulic pump/
The drive shaft of motor is connected with transfer case, the oil inlet P 5 of hydrodynamic regulation hydraulic pump/motor and the work of hydrodynamic regulation accumulator
Hydraulic fluid port, the connection of the 9th pressure sensor actuator port, the hydraulic fluid port P6 of hydrodynamic regulation hydraulic pump/motor are connected to fuel tank, third position
Displacement sensor is mounted on hydrodynamic regulation hydraulic pump/motor, detects its discharge capacity.
Further technical solution also resides in: the Main Hydraulic Pump is volume adjustable hydraulic pump, constant-pressure variable hydraulic pump, invariable power
Variable pump, inverted flux control type hydraulic pump or ratio become displacement hydraulic pump.
Further technical solution also resides in: first control valve, the second control valve and third control valve are four Bian Lian
The hydraulic valve bank of dynamic multiple directional control valve or oil inlet and outlet independent control, control mode is Hydraulic guide control, is controlled manually
System or electrical-liquid control.
Further technical solution also resides in: first hydraulic actuator, the second hydraulic actuator, the hydraulic execution of third
Device is hydraulic cylinder or hydraulic motor.
Further technical solution also resides in: first switchover control valve, the second switchover control valve, third conversion and control
Valve is hydraulic control or electric signal control.
Further technical solution also resides in: hydraulic fluid port A1, B1 of first switchover control valve, the second switchover control valve
Hydraulic fluid port A2, B2, hydraulic fluid port A3, B3 of third switchover control valve are to pass in and out respectively with the first control valve oil inlet and outlet, the second control valve
Hydraulic fluid port, the connection of third control valve oil inlet and outlet, the hydraulic fluid port R1 of the first switchover control valve, the hydraulic fluid port R2 of the second switchover control valve and the
One back pressure regulates and controls the hydraulic fluid port P1 connection of back pressure regulation hydraulic pump/motor I in unit；Second back pressure regulates and controls the first back pressure tune in unit
The hydraulic fluid port P1 of control hydraulic pump/motor I is connected to the hydraulic fluid port R3 of third switchover control valve.
Above-mentioned technical proposal of the present invention has beneficial effect below compared with prior art.
This system regulates and controls the pressure of actuator oil back chamber by pressure energy hydraulic revived structure, so that execute more
For device system under big load difference operating condition, the pressure difference of each actuator control valves is equal, the output pressure and stream of hydraulic pump
It is matched needed for amount and each actuator, thus eliminates the inconsistent generated restriction loss of load.
This system is not necessarily to pressure difference compensation valve, can not be influenced by load difference, be accurately controlled and distribute flow, further
Reduce the restriction loss of control valve control flow.
This system uses new control structure, includes that action potential recycles function, that is, uses same set of hardware system,
It realizes the recycling of movable arm potential energy and rotary braking kinetic energy, realizes that energy regenerating utilizes and eliminates load variations generation throttling damage
The overall-in-one control schema of consumption.
This system is made using new structure by the pressure of control actuator oil back chamber to adjust the operating point of engine
Engine operation meets the matched requirement of engine power in efficient operation region.
This system complete machine structure scheme reduces the installed power of machine, reduces the fever of system, and increasing machine can hold
The continuous working time simultaneously reduces cooling power, solves construction machinery hydraulic oil tank little Yi and causes asking for hydraulic heating of oil and aging
Topic.
This system structure effectively eliminates original scheme on the basis of retaining existing multi executors steer mode advantage
Deficiency has the advantages that high energy efficiency, low emission, action potential recycling and power matching integration etc. are various.
Detailed description of the invention
Fig. 1 is that the present invention regulates and controls unit containing electric driving force and the back pressure connecting with transfer case regulation unit controls three liquid
Press the circuit theory structure chart of actuator.
Fig. 2 is that the present invention regulates and controls unit containing hydraulic power and the back pressure connecting with transfer case regulation unit controls three liquid
Press the circuit theory structure chart of actuator.
Fig. 3 is that the circuit that the present invention controls three hydraulic actuators only with the back pressure regulation unit connecting with transfer case is former
Manage structure chart.
Shown in Fig. 4 it is the present invention containing electric driving force regulation unit and separates back pressure regulation unit control three with transfer case
The circuit theory structure chart of hydraulic actuator.
Shown in Fig. 5 it is the present invention containing hydraulic power regulation unit and separates back pressure regulation unit control three with transfer case
The circuit theory structure chart of hydraulic actuator.
It is the present invention shown in Fig. 6 only with the circuit for separating back pressure regulation unit three hydraulic actuators of control with transfer case
Principle assumption diagram.
In figure: 1, power source, 2, Main Hydraulic Pump, 3, transfer case, 4, safety valve, the 5, first hydraulic actuator, the 6, second liquid
Press actuator, 7, third hydraulic actuator, the 8, first control valve, the 9, second control valve, 10, third control valve, the 11, first conversion
Control valve, the 12, second switchover control valve, the 13, second switchover control valve, the 14, first back pressure regulation unit, 15, controller, 16,
First pressure sensor, 17, second pressure sensor, 18, third pressure sensor, the 19, the 4th pressure sensor, the 20, the 5th
Pressure sensor, the 21, the 6th pressure sensor, 22, back pressure regulation accumulator I, 23, back pressure regulation accumulator II, 24, back pressure tune
Control hydraulic pump/motor I, 25, back pressure regulate and control hydraulic pump/motor II, 26, repairing check valve, the 27, the 7th pressure sensor, 28, the
Eight pressure sensors, the 29, first displacement sensor, 30, speed probe, 31, second displacement sensor, 32, hydrodynamic regulation list
Member, 33, hydrodynamic regulation it is electronic/engine, 34, hydrodynamic regulation hydraulic pump/motor, 35, hydrodynamic regulation accumulator, the 36, the 9th pressure
Force snesor, 37, third displacement sensor, 38, rotational speed governor, 39, bidirectional DC-DC converter, 40, supercapacitor, 41,
Power switch, the 42, second back pressure regulate and control unit.
G1: the first hydraulic control one-way valve, the G2: the second hydraulic control one-way valve, G3: third hydraulic control one-way valve, P1, back pressure regulation are hydraulic
I oil inlet of pump/motor, P2, back pressure regulate and control I oil outlet of hydraulic pump/motor, and P3, back pressure regulate and control II oil inlet of hydraulic pump/motor,
P4, back pressure regulate and control II oil outlet of hydraulic pump/motor, and P5, hydrodynamic regulation hydraulic pump/motor oil inlet, P6, hydrodynamic regulation are hydraulic
Pump/motor oil outlet, A1, the first switchover control valve hydraulic fluid port I, the first switchover control valve of B1 hydraulic fluid port II, the first switchover control valve of R1
Hydraulic fluid port III, the second switchover control valve of A2 hydraulic fluid port I, the second switchover control valve of B2 hydraulic fluid port II, the second switchover control valve of R2 hydraulic fluid port III, A3
Third switchover control valve hydraulic fluid port I, B3 third switchover control valve hydraulic fluid port II, R3 third switchover control valve hydraulic fluid port III.
Specific embodiment
The explanation of a step is made to a specific embodiment of the invention with reference to the accompanying drawing.
Embodiment 1
It as shown in Fig. 1, is that back pressure of the present invention and dynamicliquid pressure conglomerate integration regulate and control multi executors system embodiment 1,
The circuit of its back pressure regulation unit three hydraulic actuator of control for containing electric driving force regulation unit and connecting with transfer case is former
Reason.Power source 1 selects internal combustion engine, volume adjustable hydraulic pump of the Main Hydraulic Pump 2 using inverted flux control, transfer case 3 in the system
Main transmitting torque, each axle speed ratio are 1:1, and safety valve 4 sets pressure as 32 MPa, and the first hydraulic actuator 5 selects liquid
Cylinder pressure, the second hydraulic actuator 6 equally select hydraulic cylinder, and third hydraulic actuator 7 selects hydraulic motor；First control valve 8,
Two control valves 9 and third control valve 10 are all made of the proportional multi-way valve of inverted flux control.Its structural relation is further to have additional
Hydrodynamic regulation unit 32, the first back pressure regulate and control unit 14, and the second back pressure regulates and controls unit 42 and controller 15, and controller 15 uses 32
The industrial control computer of position, the first switchover control valve 11 added, the second switchover control valve 12 and third switchover control valve 13
It is all made of electric controling mode；First hydraulic control one-way valve G1, the second hydraulic control one-way valve G2 and third hydraulic control one-way valve G3 promoting menstruation are equal
For 32 mm；First pressure sensor 16, second pressure sensor 17, third pressure sensor 18, the 4th pressure sensor 19,
5th pressure sensor 20, the 6th pressure sensor 21 pressure limit be 0-40 MPa.
The actuator port of first control valve 8 is connected to the actuator port of the first hydraulic actuator 5 respectively, the second control valve 9
Actuator port be connected to respectively with the actuator port of the second hydraulic actuator 6, the actuator port of third control valve 10 is respectively with
The actuator port of three hydraulic actuators 7 is connected to；The oil outlet of Main Hydraulic Pump 2 respectively with the first control valve 8, the second control valve 9 and
The oil inlet of third control valve 10 is connected to, and the oil return opening of the first control valve 8 is connected to the first hydraulic control one-way valve G1 oil outlet, and second
9 oil outlet of control valve is connected to the second hydraulic control one-way valve G2 oil outlet, the oil outlet and third fluid-control one-way of third control valve 10
The connection of valve G3 oil outlet；The output shaft of power source 1 is connect with transfer case 3, and the input shaft of Main Hydraulic Pump 2 is connect with transfer case 3；The
The hydraulic fluid port A1 and hydraulic fluid port B1 of one switchover control valve 11 are connected to the actuator port of the first hydraulic actuator 5 respectively, the second conversion control
The hydraulic fluid port A2 and hydraulic fluid port B2 of valve 12 processed are connected to the actuator port of the second hydraulic actuator 6 respectively, third switchover control valve 13
Hydraulic fluid port A3 and hydraulic fluid port B3 are connected to the actuator port of third hydraulic actuator 7 respectively；First pressure sensor 16, second pressure pass
Sensor 17 is connected to the actuator port of the first hydraulic actuator 5 respectively, and third pressure sensor 18, the 4th pressure sensor 19 divides
Be not connected to the actuator port of the second hydraulic actuator 6, the 5th pressure sensor 20, the 6th pressure sensor 21 respectively with third
The actuator port of hydraulic actuator 7 is connected to；All pressure sensors, displacement sensor, speed probe output signal connect
It is connected to controller 15, these signals provide control the first control valve 8, the second control valve 9, third control after 15 operation of controller
What valve 10, the first switchover control valve 11, the second switchover control valve 12, third switchover control valve 13 and rotational speed governor 30 processed acted
Signal.
First back pressure regulation unit 14 is identical on composition and internal connection relationship as the second back pressure regulation unit 42, all wraps
Back pressure regulation hydraulic pump/motor I 25 is included, back pressure regulates and controls hydraulic pump/motor II 25, and back pressure regulates and controls accumulator I 22, back pressure regulation
Accumulator II 22, repairing check valve 26, the 7th pressure sensor 27, the 8th pressure sensor 28, the first displacement sensor 29 turn
Fast sensor 30, second displacement sensor 31.
First back pressure regulates and controls in unit 14: the hydraulic fluid port P1 and the first conversion and control valve oil of back pressure regulation hydraulic pump/motor I 24
I R1 of mouth and II R2 of the second switchover control valve hydraulic fluid port connection, back pressure regulates and controls I oil outlet P2 of hydraulic pump/motor and back pressure regulates and controls accumulation of energy
The oil inlet of device I, the 7th pressure sensor 27, the connection of 26 oil outlet of repairing check valve, speed probe 30 detect back pressure regulation
I 24 revolving speed of hydraulic pump/motor, the first displacement sensor 29 detect the pivot angle of back pressure regulation hydraulic pump/motor I 24；Back pressure regulation
Hydraulic pump/motor I 24 and back pressure regulation hydraulic pump/motor II 25 are coaxially connected, and connect with transfer case 3, and back pressure regulates and controls liquid
Pressure II 25 oil outlet of pump/motor is connect with the 8th pressure sensor 28, back pressure regulation II 23 oil inlet of accumulator, and back pressure regulates and controls liquid
Pressure II 25 oil outlet of pump/motor is connect with fuel tank, and second displacement sensor 31 detects back pressure regulation hydraulic pump/motor II 25
Discharge capacity.
Second back pressure regulates and controls in unit 42: back pressure regulates and controls I oil inlet P 1 of hydraulic pump/motor and third switchover control valve hydraulic fluid port
III R3 connection；Back pressure regulate and control hydraulic pump/motor I 24 and back pressure regulation hydraulic pump/motor II 25 drive shaft not with transfer case 3
Connection, remaining connection relationship are identical as connection relationship described in the first back pressure regulation unit.
Hydrodynamic regulation unit 32 is electrical control methods, and hydrodynamic regulation unit 32 includes hydrodynamic regulation dynamoelectric machine
33, rotational speed governor 38, bidirectional DC-DC converter 39, supercapacitor 40, power switch 41.Hydrodynamic regulation dynamoelectric machine
Drive shaft is connect with transfer case, and one end of bidirectional DC-DC converter 39 is connect with the DC bus of rotational speed governor 38, two-way
The other end of DC-DC converter 39 is connect with supercapacitor 40, and the input terminal of rotational speed governor 38 is connect with power switch 41.
Shown in Main Hydraulic Pump 2 select minus flow type volume adjustable hydraulic pump.
First control valve 8, the second control valve 9 and third control valve 10 select the multiple directional control valve of four sides linkage, with master
Inverted flux control function is realized in the cooperation of hydraulic pump 2.
First hydraulic actuator 5, the second hydraulic actuator 6 select hydraulic cylinder, and third hydraulic actuator 7 selects hydraulic horse
It reaches.
First switchover control valve 11, the second switchover control valve 12, third switchover control valve 13 select electric signal controlling party
Formula.
Embodiment 2
It as shown in Fig. 2, is that back pressure of the present invention and dynamicliquid pressure conglomerate integration regulate and control multi executors system embodiment 2,
The circuit of its back pressure regulation unit three hydraulic actuator of control for containing hydraulic power regulation unit and connecting with transfer case 3 is former
Reason.
The composition and connection relationship of the present embodiment 2 are similar to Example 1, and difference is only that hydrodynamic regulation unit 32 uses liquid
Control mode is pressed, hydraulic power regulation unit includes hydrodynamic regulation hydraulic pump/motor 34, hydrodynamic regulation accumulator 35, and the 9th
Pressure sensor 36, third displacement sensor 37.The hydrodynamic regulation hydraulic pump/motor 34 selects axial plunger structure, drives
Moving axis is directly connected on transfer case 3, the oil inlet P 5 of hydrodynamic regulation hydraulic pump/motor 34 and the work of hydrodynamic regulation accumulator 35
Making hydraulic fluid port, the connection of 36 actuator port of the 9th pressure sensor, the hydraulic fluid port P6 of hydrodynamic regulation hydraulic pump/motor 34 is connected to fuel tank,
Third displacement sensor 37 is mounted on hydrodynamic regulation hydraulic pump/motor 34, for detecting its swash plate pivot angle.
Embodiment 3
It as shown in Fig. 3, is that back pressure of the present invention and dynamicliquid pressure conglomerate integration regulate and control multi executors system embodiment 3,
The circuit theory of three hydraulic actuators is controlled using the back pressure regulation unit connecting with transfer case 3.The present embodiment and embodiment 1
Difference with embodiment 2 is not include hydrodynamic regulation unit 32 in system.
Embodiment 4
It as shown in Fig. 4, is that back pressure of the present invention and dynamicliquid pressure conglomerate integration regulate and control multi executors system embodiment 4,
Regulate and control unit containing electric driving force and the back pressure regulation unit isolated with transfer case 3 controls the circuit original of three hydraulic actuators
Reason.The composition of the system is identical with the composition of embodiment 1, and difference is that the back pressure regulation in the first back pressure regulation unit is hydraulic
Pump/motor I 24 and back pressure regulation hydraulic pump/motor II 25 are not connect with transfer case 3, and power source 1 selects motor, Main Hydraulic Pump
2 select constant pressure variable displacement pump.
Embodiment 5
It as shown in Fig. 5, is back pressure of the present invention and dynamicliquid pressure conglomerate integration regulation multi executors system embodiment
5, --- regulate and control unit containing hydraulic power and separates the circuit that back pressure regulation unit controls three hydraulic actuators with transfer case 3
Principle.The system composition of the present embodiment 5 is same as Example 2, and difference is that the back pressure regulation in the first back pressure regulation unit is hydraulic
Pump/motor I 24 and back pressure regulation hydraulic pump/motor II 25 are not connect with transfer case 3, and Main Hydraulic Pump 2 selects minus flow variable pump.
Embodiment 6
It as shown in Fig. 6, is back pressure of the present invention and dynamicliquid pressure conglomerate integration regulation multi executors system embodiment
6, --- only with the circuit theory for separating back pressure regulation unit three hydraulic actuators of control with transfer case 3.
The system composition of the present embodiment 6 is same as Example 3, and difference is only the back pressure tune in the first back pressure regulation unit
Control hydraulic pump/motor I 24 and back pressure regulation hydraulic pump/motor II 25 are not connect with transfer case 3, and Main Hydraulic Pump 2 selects electric ratio
Become displacement hydraulic pump.
Claims (9)
1. a kind of back pressure and dynamicliquid pressure conglomerate integration regulate and control multi executors system, include: power source (1), Main Hydraulic Pump
(2), transfer case (3), safety valve (4), the first hydraulic actuator (5), the second hydraulic actuator (6), third hydraulic actuator
(7), the first control valve (8), the second control valve (9) and third control valve (10) further include the first displacement sensor (29), second
Displacement sensor (31), third displacement sensor (37) and speed probe (30)；It is characterized by:
Further have additional: hydrodynamic regulation unit (32), the first back pressure regulation unit (14), second by pressure regulation unit (42),
Controller (15), the first switchover control valve (11), the second switchover control valve (12), third switchover control valve (13), the first hydraulic control
Check valve G1, the second hydraulic control one-way valve G2, third hydraulic control one-way valve G3, first pressure sensor (16), second pressure sensor
(17), third pressure sensor (18), the 4th pressure sensor (19), the 5th pressure sensor (20) and the 6th pressure sensor
(21)；
The actuator port of first control valve (8) is connected to the actuator port of the first hydraulic actuator (5) respectively；Second control
The actuator port of valve (9) is connected to the actuator port of the second hydraulic actuator (6) respectively；The actuator port of third control valve (10)
It is connected to respectively with the actuator port of third hydraulic actuator (7)；
The oil outlet of Main Hydraulic Pump (2) respectively with the first control valve (8), the second control valve (9) and third control valve (10) into
Hydraulic fluid port connection, the oil return opening of the first control valve (8) are connected to the oil outlet of the first hydraulic control one-way valve G1, the second control valve (9)
Oil outlet is connected to the oil outlet of the second hydraulic control one-way valve G2, the oil outlet and third hydraulic control one-way valve G3 of third control valve (10)
Oil outlet connection；The output shaft of power source (1) is connect with transfer case (3), the input shaft of Main Hydraulic Pump (2) and transfer case (3)
Connection；The hydraulic fluid port A1 and hydraulic fluid port B1 of first switchover control valve (11) are connected to the actuator port of the first hydraulic actuator (5) respectively,
The hydraulic fluid port A2 and hydraulic fluid port B2 of second switchover control valve (12) are connected to the actuator port of the second hydraulic actuator (6) respectively, third
The hydraulic fluid port A3 and hydraulic fluid port B3 of switchover control valve (13) are connected to the actuator port of third hydraulic actuator (7) respectively；First pressure
Sensor (16), second pressure sensor (17) are connected to the actuator port of the first hydraulic actuator (5) respectively, and third pressure passes
Sensor (18), the 4th pressure sensor (19) are connected to the actuator port of the second hydraulic actuator (6) respectively, the 5th pressure sensing
Device (20), the 6th pressure sensor (21) are connected to the actuator port of third hydraulic actuator (7) respectively；All pressure sensings
Device, displacement sensor, speed probe output signal be all connected to controller (15), these signals by controller (15) transport
Control the first control valve (8), the second control valve (9), third control valve (10), the first switchover control valve (11), the are provided after calculation
The signal of two switchover control valves (12), third switchover control valve (13) and rotational speed governor (38) movement.
2. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
First back pressure regulation unit (14) is identical as the second back pressure regulation unit (42), structure, include back pressure regulate and control hydraulic pump/
Motor I (24), back pressure regulation hydraulic pump/motor II (25), back pressure regulation accumulator I (22), back pressure regulation accumulator II (23),
Repairing check valve (26), the 7th pressure sensor (27), the 8th pressure sensor (28), the first displacement sensor (29), revolving speed
Sensor (30) and second displacement sensor (31)；
First back pressure regulates and controls in unit (14): back pressure regulates and controls the hydraulic fluid port P1 and the first switchover control valve of hydraulic pump/motor I (24)
(11) the hydraulic fluid port R2 connection of hydraulic fluid port R1 and the second switchover control valve (12), back pressure regulate and control the hydraulic fluid port P2 of hydraulic pump/motor I (24)
It is connected to, turns with oil inlet, the 7th pressure sensor (27), repairing check valve (26) oil outlet of back pressure regulation accumulator I (22)
Fast sensor (30) detection back pressure regulates and controls I revolving speed of hydraulic pump/motor, and it is hydraulic that the first displacement sensor (29) detects back pressure regulation
The pivot angle of pump/motor I (24)；Back pressure regulation hydraulic pump/motor I (24) and back pressure regulate and control that hydraulic pump/motor II (25) are coaxial connects
It connects, they connect or be not connected to transfer case (3), and back pressure regulates and controls hydraulic pump/motor II (25) oil outlet and the 8th pressure sensing
Device (28), back pressure regulation accumulator II (23) oil inlet connection, back pressure regulates and controls hydraulic pump/motor II (25) oil outlet and fuel tank connects
It connects, second displacement sensor (31) detects the discharge capacity of back pressure regulation hydraulic pump/motor II (25)；
Second back pressure regulates and controls in unit (42): back pressure regulates and controls the hydraulic fluid port P1 and third switchover control valve of hydraulic pump/motor I (24)
(13) hydraulic fluid port R3 connection；Back pressure regulates and controls the drive shaft of hydraulic pump/motor I (24) and back pressure regulation hydraulic pump/motor II (25)
It is not connect with transfer case (3), remaining structural relation is identical as the first back pressure regulation unit (14).
3. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
When the hydrodynamic regulation unit (32) is electrical adjusted and controlled, hydrodynamic regulation unit (32) include hydrodynamic regulation it is electronic/hair
Motor (33), rotational speed governor (38), bidirectional DC-DC converter (39), supercapacitor (40) and power switch (41)；Power
Regulation dynamoelectric machine (33) drive shaft is connect with transfer case (3), and one end of bidirectional DC-DC converter (39) and revolving speed control
The DC bus of device (38) connects, and the other end of bidirectional DC-DC converter (39) is connect with supercapacitor (40), revolving speed control
The input terminal of device (38) is connect with power switch (41).
4. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
It include hydrodynamic regulation hydraulic pump/motor (34), hydrodynamic regulation when the hydrodynamic regulation unit (32) is hydraulic regulating mode
Accumulator (35), the 9th pressure sensor (36) and third displacement sensor (37)；The drive of hydrodynamic regulation hydraulic pump/motor (34)
Moving axis is connected with transfer case (3), the oil inlet P 5 of hydrodynamic regulation hydraulic pump/motor (34) and the work of hydrodynamic regulation accumulator (35)
Make hydraulic fluid port, the connection of the 9th pressure sensor (36) actuator port, the hydraulic fluid port P6 and fuel tank of hydrodynamic regulation hydraulic pump/motor (34) connect
Logical, third displacement sensor (37) is mounted on hydrodynamic regulation hydraulic pump/motor (34), detects its discharge capacity.
5. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
The Main Hydraulic Pump (2) is volume adjustable hydraulic pump.
6. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
First control valve (8), the second control valve (9) and third control valve (10) they are the multiple directional control valves of four sides linkage, or into
The hydraulic valve bank of oil outlet independent control, control mode are Hydraulic guide controls, are manually controlled or electrical-liquid control.
7. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
First hydraulic actuator (5), the second hydraulic actuator (6), third hydraulic actuator (7) are hydraulic cylinder or hydraulic horse
It reaches.
8. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
First switchover control valve (11), the second switchover control valve (12), third switchover control valve (13) are hydraulic controls, or electricity
The control of gas signal.
9. back pressure according to claim 1 and dynamicliquid pressure conglomerate integration regulate and control multi executors system, it is characterised in that:
Hydraulic fluid port A2, B2 of hydraulic fluid port A1, B1 of first switchover control valve (11), the second switchover control valve (12), third conversion and control
Hydraulic fluid port A3, B3 of valve (13) are to control respectively with the first control valve (8) oil inlet and outlet, the second control valve (9) oil inlet and outlet, third
The connection of valve (10) oil inlet and outlet, the hydraulic fluid port R1 of the first switchover control valve (11), the hydraulic fluid port R2 of the second switchover control valve (12) and the
One back pressure regulates and controls the hydraulic fluid port P1 connection of back pressure regulation hydraulic pump/motor I (24) in unit (14)；Second back pressure regulates and controls unit (42)
In the first back pressure regulation hydraulic pump/motor I (24) hydraulic fluid port P1 be connected to the hydraulic fluid port R3 of third switchover control valve (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710830469.1A CN107503998B (en) | 2017-09-15 | 2017-09-15 | Back pressure and dynamicliquid pressure conglomerate integration regulate and control multi executors system |
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|---|---|---|---|
| CN201710830469.1A CN107503998B (en) | 2017-09-15 | 2017-09-15 | Back pressure and dynamicliquid pressure conglomerate integration regulate and control multi executors system |
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| CN107503998B true CN107503998B (en) | 2019-08-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3850594B2 (en) * | 1999-08-09 | 2006-11-29 | 日立建機株式会社 | Hydraulic control device for hydraulic working machine |
| CN201011762Y (en) * | 2007-02-08 | 2008-01-30 | 冯康健 | Semi-automatic drum-type transplanting machine |
| CN202406490U (en) * | 2011-12-06 | 2012-09-05 | 四川农业大学 | Anti-winding soil covering furrowing device |
| WO2013099710A1 (en) * | 2011-12-28 | 2013-07-04 | 日立建機株式会社 | Power regeneration device for work machine and work machine |
| CN102561451B (en) * | 2012-03-04 | 2014-05-07 | 浙江大学 | Energy optimization system for hydraulic excavator |
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