CN110388339B - Full-functional intelligent electrohydraulic linkage control system and control method - Google Patents
Full-functional intelligent electrohydraulic linkage control system and control method Download PDFInfo
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- CN110388339B CN110388339B CN201910781841.3A CN201910781841A CN110388339B CN 110388339 B CN110388339 B CN 110388339B CN 201910781841 A CN201910781841 A CN 201910781841A CN 110388339 B CN110388339 B CN 110388339B
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004146 energy storage Methods 0.000 claims abstract description 37
- 230000007547 defect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/088—Characterised by the construction of the motor unit the motor using combined actuation, e.g. electric and fluid actuation
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/124—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated
- F16K31/1245—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston servo actuated with more than one valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
- F15B2013/0448—Actuation by solenoid and permanent magnet
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B2015/206—Combined actuation, e.g. electric and fluid actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/75—Control of speed of the output member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a full-functional intelligent electrohydraulic linkage control system and a control method, which relate to the technical field of actuator control systems and comprise a motor connected with an oil tank, wherein the motor comprises an A1 oil outlet and a B1 oil outlet, and the B1 oil outlet is respectively connected with a first electromagnetic valve, a one-way valve, an energy storage tank, a third electromagnetic valve and an electrohydraulic linkage actuator in series; the A1 oil outlet is connected between the third electromagnetic valve and the oil cylinder of the electrohydraulic linkage actuator; a second electromagnetic valve and a fourth electromagnetic valve are also connected in parallel between the two oil ways; the motor, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the energy storage tank are respectively connected with an electric control system. The system realizes the control of various modes of the electrohydraulic linkage actuator valve, solves the defect of single function of the pneumatic or electric actuator, improves the control precision, saves energy and can effectively improve the working efficiency.
Description
Technical Field
The invention relates to the technical field of actuator control systems, in particular to a full-function intelligent electrohydraulic linkage control system and a control method.
Background
In the field of fluid control and the intelligent valve industry, a valve actuator is an indispensable valve driving device for realizing program control, automatic control and remote control of a valve. Because the control process and the control requirements are continuously improved, the electric actuator and the pneumatic actuator cannot meet the requirements in the aspects of adjusting precision, switching speed, fault position, large torque, low energy consumption and the like of the valve actuator, and the electro-hydraulic linkage actuator is applied. In the electrohydraulic linkage actuator, how to well improve the system thereof, the reaction speed is high, the control precision is high, and the problems of ESD, PST, step control and linkage control are urgently needed to be solved in the field.
Disclosure of Invention
The invention aims to overcome the problems of the prior art, and provides a full-function intelligent electrohydraulic linkage control system and a control method, which are combined by utilizing the advantages of high motor control precision and high electromagnetic valve control speed, realize quick opening and quick closing of an electrohydraulic linkage actuator valve by additionally arranging an energy storage tank and controlling an oil way by an electromagnetic valve.
The above purpose is realized by the following technical scheme:
the motor and electromagnetic valve linkage control system comprises a motor connected with an oil tank, wherein the motor comprises an A1 oil outlet and a B1 oil outlet, the B1 oil outlet is connected with a first electromagnetic valve, and an O port of the first electromagnetic valve is connected with a B port of an oil cylinder of an electrohydraulic linkage actuator; the P port of the first electromagnetic valve is connected with the A port of the oil cylinder of the electrohydraulic linkage actuator through a one-way valve, an energy storage tank and a third electromagnetic valve; the oil outlet of the A1 is connected between the third electromagnetic valve and an A port of the oil cylinder of the electrohydraulic linkage actuator, a fourth electromagnetic valve is connected at the junction of the oil outlet of the A1, the third electromagnetic valve and the A port of the oil cylinder of the electrohydraulic linkage actuator, and the other end of the fourth electromagnetic valve is connected between an O port of the first electromagnetic valve and a B port of the oil cylinder of the electrohydraulic linkage actuator; a second electromagnetic valve is connected in parallel with an O port of the first electromagnetic valve between the energy storage tank and the third electromagnetic valve; the motor, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the energy storage tank are respectively connected with an electric control system.
Preferably, the hydraulic control system further comprises a pressure sensor, wherein the pressure sensor comprises a first pressure sensor arranged between the one-way valve and the energy storage tank, a second pressure sensor arranged at an A port of an oil cylinder of the electrohydraulic linkage actuator, and a third pressure sensor arranged at a B port of the oil cylinder of the electrohydraulic linkage actuator.
Preferably, the hydraulic control system further comprises a throttle valve, wherein the throttle valve comprises a first throttle valve arranged at an oil outlet of the energy storage tank and a second throttle valve arranged between the fourth electromagnetic valve and the A1 oil outlet.
Preferably, the first electromagnetic valve is a two-position three-way electromagnetic valve, and the second electromagnetic valve, the third electromagnetic valve and the fourth electromagnetic valve are two-position two-way electromagnetic valves.
Preferably, the electrohydraulic linkage actuator is a single-acting electrohydraulic linkage actuator or a double-acting electrohydraulic linkage actuator.
The control method of the motor and electromagnetic valve linkage control system is used for opening and closing valve states of the electro-hydraulic linkage actuator, and defaults to initial states of the valve, the A1 oil outlet, the B1 oil outlet, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the energy storage tank of the electro-hydraulic linkage actuator to be closed states, and is characterized by comprising the following control modes:
(1) Double-acting quick closing: the motor drives an A1 oil outlet to produce oil, and meanwhile, the third electromagnetic valve is conducted, and the energy storage tank and the A1 oil outlet synchronously feed oil to an A port of an oil cylinder of the electrohydraulic linkage actuator so as to realize quick closing of the valve;
(2) Double-acting slow off: the motor drives an oil outlet of the A1 to discharge oil, the oil is fed into an A port of an oil cylinder of the electrohydraulic linkage actuator, and the valve is slowly closed by controlling the rotating speed of the motor;
(3) Double-acting quick-opening: the motor drives the oil outlet of the B1 to discharge oil, meanwhile, the second electromagnetic valve is conducted, and the energy storage tank and the oil outlet of the B1 synchronously feed oil to the port B of the oil cylinder of the electrohydraulic linkage actuator, so that a valve is quickly opened;
(4) Double-acting slow opening: the motor drives the oil outlet of the B1 oil outlet to feed oil to the B port of the oil cylinder of the electrohydraulic linkage actuator, so that a valve is slowly opened;
(5) And (3) closing in combination of speed and speed: the motor drives an A1 oil outlet to discharge oil, meanwhile, the third electromagnetic valve is conducted, the energy storage tank and the A1 oil outlet are synchronously fed into an A port of an oil cylinder of the electrohydraulic linkage actuator, a valve is closed rapidly, and when the valve is closed to a preset value, the third electromagnetic valve is closed, and the motor drives the A1 oil outlet to continuously discharge oil until the valve is closed completely;
(6) The combination of speed and slow is opened: the motor drives the oil outlet of the B1 to go out oil, meanwhile, the second electromagnetic valve is conducted, the energy storage tank and the oil outlet of the A1 are synchronously fed into the port B of the oil cylinder of the electrohydraulic linkage actuator, a valve is opened rapidly, when the valve is opened to a preset value, the second electromagnetic valve is closed, and the oil outlet of the B1 is driven by the motor alone to continue to go out oil until the valve is opened completely;
(7) Single-action quick-opening: the motor drives the oil outlet of the B1 to discharge oil, meanwhile, the second electromagnetic valve is conducted, and the energy storage tank and the oil outlet of the A1 synchronously feed oil to the port B of the oil cylinder of the electrohydraulic linkage actuator, so that a valve is quickly opened;
(8) Single-action fast closing: the fourth electromagnetic valve is conducted, and under the action of the spring, the single-acting electrohydraulic linkage actuator enables oil in the inner cavity of the port B of the oil cylinder of the electrohydraulic linkage actuator to enter the inner cavity of the port A of the oil cylinder of the electrohydraulic linkage actuator along the fourth electromagnetic valve, so that the valve is closed rapidly.
Advantageous effects
The full-functional intelligent electrohydraulic linkage control system and the control method thereof utilize the advantages of high motor control precision and high solenoid valve control speed, combine the motor control precision with the solenoid valve control speed, realize the control of various modes of electrohydraulic linkage actuator valves through additionally arranging the control of the oil way by the energy storage tank and the solenoid valve, solve the defect of single function of a pneumatic or electric actuator, greatly reduce the power of a motor, save energy and effectively improve the working efficiency.
Drawings
FIG. 1 is a schematic diagram of a full-function intelligent electrohydraulic linkage control system of the present invention coupled to a dual-acting electrohydraulic linkage actuator;
FIG. 2 is a schematic diagram of a full-functional intelligent electrohydraulic linkage control system of the present invention connected to a single-acting electrohydraulic linkage actuator.
Detailed Description
It should be noted that the description of the specific structure and the order of description in this section are merely illustrative of specific embodiments and should not be construed as limiting the scope of the invention in any way. Furthermore, the embodiments in this section and the features in the embodiments may be combined with each other without conflict.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, a motor and electromagnetic valve linkage control system comprises a motor connected with an oil tank, wherein the motor comprises an A1 oil outlet and a B1 oil outlet, the B1 oil outlet is connected with a first electromagnetic valve 1, and an O port of the first electromagnetic valve 1 is connected with a B port of an oil cylinder 10-1 of an electrohydraulic linkage actuator 10; the P port of the first electromagnetic valve 1 is connected with the A port of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10 through a one-way valve 6, an energy storage tank 5 and a third electromagnetic valve 3; the oil outlet of the A1 is connected between the oil outlet of the third electromagnetic valve 3 and the port A of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, a fourth electromagnetic valve 4 is connected at the junction of the oil outlet of the A1, the oil outlet of the third electromagnetic valve 3 and the port A of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, and the other end of the fourth electromagnetic valve 4 is connected between the port O of the first electromagnetic valve 1 and the port B of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10; a second electromagnetic valve 2 is connected in parallel with an O port of the first electromagnetic valve 1 between the energy storage tank 5 and the third electromagnetic valve 3; the motor, the first electromagnetic valve 1, the second electromagnetic valve 2, the third electromagnetic valve 3, the fourth electromagnetic valve 4 and the energy storage tank 5 are respectively connected with an electric control system.
As an optimization of the system, the system further comprises a pressure sensor 7, wherein the pressure sensor 7 comprises a first pressure sensor 7-1 arranged between the one-way valve 6 and the energy storage tank 5, a second pressure sensor 7-2 arranged at an A port of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, and a third pressure sensor 3 arranged at a B port of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10. In order to facilitate the control of the oil pressure flow, a throttle valve is provided, comprising a first throttle valve 8 arranged at the oil outlet of the accumulator tank, and a second throttle valve 9 arranged between the fourth solenoid valve 4 and the oil outlet of the A1.
In this embodiment, the first electromagnetic valve 1 is a two-position three-way electromagnetic valve, and the second electromagnetic valve 2, the third electromagnetic valve 3 and the fourth electromagnetic valve 4 are two-position two-way electromagnetic valves. The electro-hydraulic linkage actuator 10 may be a single-acting electro-hydraulic linkage actuator or a double-acting electro-hydraulic linkage actuator.
According to the control method of the motor and solenoid valve coordinated control system, which is used for opening and closing the valve state of the electrohydraulic coordinated actuator, the initial states of the valve of the electrohydraulic coordinated actuator 10, the A1 oil outlet, the B1 oil outlet, the first solenoid valve 1, the second solenoid valve 2, the third solenoid valve 3, the fourth solenoid valve 4 and the energy storage tank 5 are all closed states by default, and the control method comprises the following control modes:
(1) Double-acting quick closing: as shown in fig. 1, the motor drives the oil outlet of the A1, and at the same time, the third electromagnetic valve 3 is conducted, and the energy storage tank 5 and the oil outlet of the A1 are synchronously fed into the port a of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, so that the valve is quickly closed;
(2) Double-acting slow off: as shown in fig. 1, the motor drives the oil outlet of the A1 to discharge oil, and the oil is fed into the A port of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, and the valve is slowly closed by controlling the rotating speed of the motor;
(3) Double-acting quick-opening: as shown in fig. 1, the motor drives the oil outlet of the B1, and at the same time, the second electromagnetic valve 2 is turned on, and the energy storage tank 5 and the oil outlet of the B1 are synchronously fed into the port B of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, so as to realize quick valve opening;
(4) Double-acting slow opening: as shown in fig. 1, the motor drives the oil outlet of the B1 to feed oil to the B port of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, so as to realize slow opening of the valve;
(5) And (3) closing in combination of speed and speed: as shown in fig. 1, the motor drives the oil outlet of the A1 to go out oil, meanwhile, the third electromagnetic valve 3 is turned on, the energy storage tank 5 and the oil outlet of the A1 are synchronously fed into the port a of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, so as to realize quick closing of the valve, when the valve is closed to a preset value (100% is in a completely closed state, the preset value is 80%), the third electromagnetic valve 3 is closed, the oil outlet of the A1 is driven by the motor alone to continue to go out oil until the valve is completely closed (100% is completely closed), at this time, the port O of the first electromagnetic valve 1 is switched to the port P, and the oil pressure enters the energy storage tank 5 through the port P of the first electromagnetic valve 1 to be complemented;
(6) The combination of speed and slow is opened: as shown in fig. 1, the motor drives the oil outlet of the B1 to go out oil, meanwhile, the second electromagnetic valve 2 is turned on, the energy storage tank 5 and the oil outlet of the A1 are synchronously fed into the port B of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10, so as to realize quick opening of the valve, when the valve is opened to a preset value (0 is in a fully opened state, the preset value is 20%), the second electromagnetic valve 2 is closed, the motor drives the oil outlet of the B1 to continue to go out oil until the valve is fully opened (reaching 0 to be fully closed), the port O of the first electromagnetic valve 1 is switched to the port P, and the oil pressure enters the energy storage tank 5 through the port P of the first electromagnetic valve 1 to be complemented;
(7) Single-action quick-opening: as shown in fig. 2, the motor drives the oil outlet of the B1, and simultaneously, the second electromagnetic valve 2 is conducted, and the energy storage tank 5 and the oil outlet of the A1 synchronously feed oil to the port B of the oil cylinder of the electrohydraulic linkage actuator, so that a valve is quickly opened;
(8) Single-action fast closing: as shown in fig. 2, the fourth electromagnetic valve 4 is turned on, and the single-acting electrohydraulic linkage actuator drives the oil in the cavity of the port B of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10 to enter the cavity of the port a of the oil cylinder 10-1 of the electrohydraulic linkage actuator 10 along the fourth electromagnetic valve 4 under the action of the spring of the single-acting electrohydraulic linkage actuator, so as to realize quick valve closing.
The system realizes multiple controls such as double-acting fast closing/double-acting slow closing/double-acting fast opening/double-acting slow opening/fast slow closing (partial stroke fast closing, partial stroke slow closing)/fast slow opening (partial stroke slow opening)/single-acting fast opening, single-acting fast closing and the like under the condition of not changing the structure of the hydraulic control module by combining software and hardware. The single and double action regulation, the ESD part stroke test, the position of the appointed fault and the like can be realized. Fundamentally solves the defect that a pneumatic actuator or an electric actuator can only realize a single function.
While the invention has been described with respect to the preferred embodiments, it is to be understood that the invention is not limited thereto, but is capable of modification and substitution within the spirit and scope of the invention as will be apparent to those skilled in the art. Therefore, the protection scope of the present invention should be subject to the claims.
Claims (6)
1. The full-functional intelligent electrohydraulic linkage control system is characterized by comprising a motor connected with an oil tank, wherein the motor comprises an A1 oil outlet and a B1 oil outlet, the B1 oil outlet is connected with a first electromagnetic valve, and an O port of the first electromagnetic valve is connected with a B port of an oil cylinder of an electrohydraulic linkage actuator; the P port of the first electromagnetic valve is connected with the A port of the oil cylinder of the electrohydraulic linkage actuator through a one-way valve, an energy storage tank and a third electromagnetic valve; the oil outlet of the A1 is connected between the third electromagnetic valve and an A port of the oil cylinder of the electrohydraulic linkage actuator, a fourth electromagnetic valve is connected at the junction of the oil outlet of the A1, the third electromagnetic valve and the A port of the oil cylinder of the electrohydraulic linkage actuator, and the other end of the fourth electromagnetic valve is connected between an O port of the first electromagnetic valve and a B port of the oil cylinder of the electrohydraulic linkage actuator; a second electromagnetic valve is connected in parallel with an O port of the first electromagnetic valve between the energy storage tank and the third electromagnetic valve; the motor, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the energy storage tank are respectively connected with an electric control system.
2. The full-function intelligent electro-hydraulic linkage control system according to claim 1, further comprising a pressure sensor, wherein the pressure sensor comprises a first pressure sensor arranged between the one-way valve and the energy storage tank, a second pressure sensor arranged at an A port of an oil cylinder of the electro-hydraulic linkage actuator, and a third pressure sensor arranged at a B port of the oil cylinder of the electro-hydraulic linkage actuator.
3. The full-function intelligent electro-hydraulic coordinated control system according to claim 2 further comprising a throttle valve comprising a first throttle valve disposed at an oil outlet of the accumulator tank and a second throttle valve disposed between the fourth solenoid valve and the A1 oil outlet.
4. The full-function intelligent electro-hydraulic coordinated control system according to claim 1 wherein the first solenoid valve is a two-position three-way solenoid valve and the second, third and fourth solenoid valves are two-position two-way solenoid valves.
5. The full-function intelligent electrohydraulic linkage control system of claim 1 wherein said electrohydraulic linkage actuator is a single-acting electrohydraulic linkage actuator or a double-acting electrohydraulic linkage actuator.
6. The control method of any one of claims 1-5, for opening and closing a valve state of the electro-hydraulic linkage actuator, defaulting to an initial state of the valve of the electro-hydraulic linkage actuator, the A1 oil outlet, the B1 oil outlet, the first solenoid valve, the second solenoid valve, the third solenoid valve, the fourth solenoid valve, and the energy storage tank to a closed state, comprising the following control modes:
(1) Double-acting quick closing: the motor drives an A1 oil outlet to produce oil, and meanwhile, the third electromagnetic valve is conducted, and the energy storage tank and the A1 oil outlet synchronously feed oil to an A port of an oil cylinder of the electrohydraulic linkage actuator so as to realize quick closing of the valve;
(2) Double-acting slow off: the motor drives an oil outlet of the A1 to discharge oil, the oil is fed into an A port of an oil cylinder of the electrohydraulic linkage actuator, and the valve is slowly closed by controlling the rotating speed of the motor;
(3) Double-acting quick-opening: the motor drives the oil outlet of the B1 to discharge oil, meanwhile, the second electromagnetic valve is conducted, and the energy storage tank and the oil outlet of the B1 synchronously feed oil to the port B of the oil cylinder of the electrohydraulic linkage actuator, so that a valve is quickly opened;
(4) Double-acting slow opening: the motor drives the oil outlet of the B1 oil outlet to feed oil to the B port of the oil cylinder of the electrohydraulic linkage actuator, so that a valve is slowly opened;
(5) And (3) closing in combination of speed and speed: the motor drives an A1 oil outlet to discharge oil, meanwhile, the third electromagnetic valve is conducted, the energy storage tank and the A1 oil outlet are synchronously fed into an A port of an oil cylinder of the electrohydraulic linkage actuator, a valve is closed rapidly, and when the valve is closed to a preset value, the third electromagnetic valve is closed, and the motor drives the A1 oil outlet to continuously discharge oil until the valve is closed completely;
(6) The combination of speed and slow is opened: the motor drives the oil outlet of the B1 to go out oil, meanwhile, the second electromagnetic valve is conducted, the energy storage tank and the oil outlet of the A1 are synchronously fed into the port B of the oil cylinder of the electrohydraulic linkage actuator, a valve is opened rapidly, when the valve is opened to a preset value, the second electromagnetic valve is closed, and the oil outlet of the B1 is driven by the motor alone to continue to go out oil until the valve is opened completely;
(7) Single-action quick-opening: the motor drives the oil outlet of the B1 to discharge oil, meanwhile, the second electromagnetic valve is conducted, and the energy storage tank and the oil outlet of the A1 synchronously feed oil to the port B of the oil cylinder of the electrohydraulic linkage actuator, so that a valve is quickly opened;
(8) Single-action fast closing: the fourth electromagnetic valve is conducted, and under the action of the spring, the single-acting electrohydraulic linkage actuator enables oil in the inner cavity of the port B of the oil cylinder of the electrohydraulic linkage actuator to enter the inner cavity of the port A of the oil cylinder of the electrohydraulic linkage actuator along the fourth electromagnetic valve, so that the valve is closed rapidly.
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| CN201910781841.3A CN110388339B (en) | 2019-08-23 | 2019-08-23 | Full-functional intelligent electrohydraulic linkage control system and control method |
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| CN201910781841.3A CN110388339B (en) | 2019-08-23 | 2019-08-23 | Full-functional intelligent electrohydraulic linkage control system and control method |
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| CN110388339B true CN110388339B (en) | 2024-03-12 |
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| CN110388339A (en) | 2019-10-29 |
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