CN106884833A - A kind of hydraulic servo synchronization system - Google Patents
A kind of hydraulic servo synchronization system Download PDFInfo
- Publication number
- CN106884833A CN106884833A CN201710251962.8A CN201710251962A CN106884833A CN 106884833 A CN106884833 A CN 106884833A CN 201710251962 A CN201710251962 A CN 201710251962A CN 106884833 A CN106884833 A CN 106884833A
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- oil
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- synchronization system
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/26—Supply reservoir or sump assemblies
-
- 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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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
- F15B13/024—Pressure relief valves
-
- 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
- F15B13/027—Check valves
-
- 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
- F15B13/029—Counterbalance valves
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/002—Calibrating
-
- 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
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of hydraulic servo synchronization system, including fuel tank, for storing fluid；Auxiliary unit, with the auxiliary oil way for delivering oil；The first oil circuit, the second oil circuit with parallel connection and for delivering oil and the reversal valve for commutating, first oil circuit, the second oil circuit and reversal valve are connected with auxiliary oil way.The present invention reaches synchronous purpose with auxiliary unit jointly using master unit so that computing is accurate, and response is fast, improves operating efficiency.
Description
Technical field
The present invention relates to mechanical electronic hydraulic field, and in particular to a kind of hydraulic servo synchronization system.
Background technology
Hydraulic synchronous system is to realize multiple actuators with returning that same displacement, identical power or equal velocity move
Road.Large scale equipment is very big because of load force or relation of layout, need to set multiple hydraulic actuators and drive an executing agency simultaneously, such as
The fuselage lifting hydraulic cylinder in compression hydraulic cylinder, pile press machine in hydraulic press, swing arm cylinder and scraper bowl cylinder in loading machine, scraper machine
Swing arm cylinder, bucket in perching knife lift cylinders and ridge buster lift cylinders, excavator in middle sluice gate hydraulic cylinder and scraper bowl lift cylinders, bull-dozer
Cylinder and dipper cylinder etc.
Hydraulic synchronization motion includes synchronous power, synchronous three classes of speed sync and position.Power synchronously refers to output to each actuator
Power it is identical；Speed sync refers to that each actuator motions speed is identical；Position synchronously then needs to ensure each actuator in operation and stops
Position is identical when only.The mode of hydraulic synchronization uses mechanical synchronization, using Hydraulic Synchronizing Valve synchronization, uses choke valve, speed governing
Valve hydraulic synchronization, using gear shunting motor synchronous, the method for synchronization of the above all with one it is common the characteristics of, exactly belong to out
Ring control system, hydraulic cylinder for short stroke or requires that synchronization accuracy system not high can be used, when requiring synchronization accuracy
The hydraulic cylinder of high and long stroke cannot be realized.
In sum, it is necessary to which it is same with the hydraulic servo that displacement transducer forms a closed loop to design a kind of use ratio valve
Step system is realized.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of hydraulic servo synchronization system, by displacement, flow signal
Closed-loop automatic control is reached, so as to realize low speed absolute error synchronization.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of hydraulic servo synchronization system, including：
Fuel tank, for storing fluid；
Auxiliary unit, with the auxiliary oil way for delivering oil；
Master unit, the first oil circuit, the second oil circuit with parallel connection and for delivering oil and the reversal valve for commutating,
First oil circuit, the second oil circuit and reversal valve are connected with auxiliary oil way.
The beneficial effects of the invention are as follows：Synchronous purpose is reached with auxiliary unit using master unit jointly so that computing is accurate,
Response is fast, improves operating efficiency.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the auxiliary unit, including the hydraulic pump that is connected with fuel tank and the motor for driving hydraulic pump,
The auxiliary oil way connects with hydraulic pump and check valve is provided with auxiliary oil way.
Beneficial effect using above-mentioned further scheme is:Using check valve, when preventing oil pump from stopping, fluid is produced to pour in down a chimney
Phenomenon, simple structure reduces the leakage between each Hydraulic Elements, can consume when can reduce each element manipulation in addition
Lose.
Further, the auxiliary unit also includes high pressure filter, and the high pressure filter is arranged on check valve and main list
Between the oil circuit of unit.
Beneficial effect using above-mentioned further scheme is:High pressure filter plays secondary filter effect in systems, increases
The cleannes of oiling liquid, protect the precision element of the system, prevent valve card phenomenon.
Further, it is also equipped with oil absorption filter on the auxiliary oil way between fuel tank and hydraulic pump.
Beneficial effect using above-mentioned further scheme is:Oil absorption filter uses coarse filtration, prevents the impurity of bulky grain
Oil pump is damaged, shortens oil pump life, the oil filter oil filter precision should not prevent oil pump self-priming fluid not from too high in addition
Foot, and burn pump.
Further, pressure gauge and accumulator are installed on auxiliary oil way.
Beneficial effect using above-mentioned further scheme is:Pressure gauge is connected by pressure measurement flexible pipe, so that pressure gauge
Display fluctuation is less, more accurately display system pressure；Using accumulator, one is absorbing effect, is risen to Wave crest and wave trough pressure slow
Punching is acted on, and two is pressure store oil, is not in have instantaneous pressure to decline to manifest when proportional reversing valve is in adjustment.
Further, first oil circuit and the second oil circuit of the master unit are to include the proportional reversing valve, the superposition that are connected
Built-in mangneto displacement transducer, built-in mangneto displacement are installed in formula hydraulic control one-way valve, high-pressure ball valve and hydraulic cylinder, hydraulic cylinder
Closed loop is formed between sensor and proportional reversing valve.
Beneficial effect using above-mentioned further scheme is:Built-in mangneto displacement transducer detects Position of Hydraulic Cylinder, than
Example reversal valve, when PLC provides a desired value, line number is entered by D/A and A/D modules to the fine-limit work element of hydraulic pressure oil supply cylinder
According to conversion, hydraulic cylinder exact position is drawn in the case where the CPU of PLC is calculated, stacking type hydraulic control check valve, high-pressure ball valve are mainly works as liquid
When cylinder pressure stops, hydraulic cylinder is prevented because producing roll-off when Hydraulic Elements are leaked.
Further, a Superimposed relief valve in parallel on the reversal valve.
Beneficial effect using above-mentioned further scheme is:Be not in unload when servo hydraulic system can be made not work
Oil does not freely produce back pressure.
Further, the proportional reversing valve is two-position four-way solenoid valve.
Beneficial effect using above-mentioned further scheme is:Loading and pressure release transformation.
Further, liquid level gauge and air filter are installed in fuel tank.
Beneficial effect using above-mentioned further scheme is:Fuel tank uses closed oil tank, air filter in order that oil pump exists
During work, fuel tank is not set to produce negative pressure, and large granular impurity carries out filtration to external world；Liquid level gauge real-time monitoring oil tank liquid level
Situation.
Further, it is also equipped with counterbalance valve on the auxiliary oil way of fuel tank and master unit.
Beneficial effect using above-mentioned further scheme is:Prevent hydraulic cylinder in the course of the work, negative pressure produced during decline,
So that hydraulic cylinder suction air, and generation is creeped.
Brief description of the drawings
Fig. 1 is synchronization hydraulic system schematic diagram of the present invention；
Fig. 2 is synchronization hydraulic system principle assumption diagram of the present invention.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, liquid level gauge 1；2nd, oil absorption filter；3rd, air filter 3；4th, motor；5th, hydraulic pump；6th, check valve；7th, height is pressed through
Filter；8th, pressure gauge；9th, accumulator；10th, proportional reversing valve；11st, hydraulic cylinder；12nd, reversal valve；13rd, high-pressure ball valve；14th, it is superimposed
Formula overflow valve；15th, stacking type hydraulic control check valve；16th, counterbalance valve；17th, fuel tank.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
As shown in figure 1, a kind of hydraulic servo synchronization system, including：Fuel tank 17 for storing fluid；
Auxiliary unit with the auxiliary oil way for delivering oil；And
The main list of the first oil circuit, the second oil circuit with parallel connection and for delivering oil and the reversal valve 12 for commutating
Unit, first oil circuit, the second oil circuit and reversal valve 12 are connected with auxiliary oil way.
In one embodiment of the present of invention, fuel tank 17 uses closed oil tank 17, is provided with fuel tank 17 in fuel tank 17
Liquid level gauge 1 and air filter 3 are installed, fuel tank 17 uses closed oil tank 17, and air filter 3 is not in order that oil pump operationally, makes
Fuel tank 17 produces negative pressure, and large granular impurity carries out filtration to external world；The level condition of 1 real-time monitoring fuel tank of liquid level gauge 17,
To supplement fluid in time.Counterbalance valve 16 is also equipped with the auxiliary oil way of fuel tank 17 and master unit.Prevent hydraulic cylinder 11 from existing
In the course of work, negative pressure is produced during decline so that hydraulic cylinder 11 sucks air, and generation is creeped.
In one embodiment of the present of invention, auxiliary unit includes the hydraulic pump 5 connected with fuel tank 17 and for driving liquid
The motor 4 of press pump 5, auxiliary oil way connects with hydraulic pump 5 and check valve 6 is provided with auxiliary oil way.Motor 4 drives
Hydrodynamic press pump 5 is from pump oil in fuel tank 17 and via check valve 6 is into auxiliary oil way and then enters main unit.The setting of check valve 6
It is then to prevent fluid from flowing backward to hydraulic pump 5, it is to avoid hydraulic pump 5 is caused to damage.
Auxiliary unit also includes high pressure filter 7, and high pressure filter 7 is arranged between check valve 6 and the oil circuit of master unit,
High pressure filter 7 plays secondary filter effect in systems, increases the cleannes of fluid, protects the precision element of the system, prevents
Only valve card phenomenon.
Oil absorption filter 2 is also equipped with auxiliary oil way between fuel tank 17 and hydraulic pump 5.Oil absorption filter 2 is used
Coarse filtration, prevents the impurity damage oil pump of bulky grain, shortens oil pump life, and the oil filter oil filter precision should not be selected in addition
Height, prevents oil pump self-priming fluid not enough, and burns pump.
Pressure gauge 8 and accumulator 9 are installed on auxiliary oil way, pressure gauge 8 is connected by pressure measurement flexible pipe, so that pressure
The display fluctuation of power table 8 is less, more accurately display system pressure；Using accumulator 9, one is absorbing effect, gives Wave crest and wave trough pressure
Power plays cushioning effect, and two is pressure store oil, is not in have instantaneous pressure to decline to show when proportional reversing valve 10 is in adjustment
It is existing.
In one embodiment of the present of invention, master unit is set to the first oil circuit, the second oil circuit two-way oil circuit and carries out fuel feeding, real
The purpose for now being worked asynchronously with auxiliary unit.First oil circuit and the second oil circuit of master unit are to include the ratio commutation being connected
Built-in mangneto displacement sensing is installed in valve 10, stacking type hydraulic control check valve 15, high-pressure ball valve 13 and hydraulic cylinder 11, hydraulic cylinder 11
Device, closed loop is formed between built-in mangneto displacement transducer and proportional reversing valve 10.Built-in mangneto displacement transducer inspection
The real time position of the hydraulic cylinder 11 for needing synchronous is surveyed, two amplified devices of proportional reversing valve 10 is installed on servo hydraulic system and is put
Big signal, rises or falls in hydraulic cylinder 11, when advancing or retreating, carries out flow adjustment, the position of corresponding control hydraulic cylinder 11,
A closed-loop system is formed between built-in mangneto displacement transducer and proportional reversing valve 10, is entered through PLC by A/D and D/A modules
Row internal data is changed, and through PID arithmetic, two hydraulic cylinders of adjustment 11 are synchronous.Proportional reversing valve 1210 is to give the fuel feeding of hydraulic cylinder 11
Fine-limit work element, when PLC provides a desired value, data conversion is carried out by D/A and A/D modules, PLC CPU count
The exact position of hydraulic cylinder 11 is drawn under calculation, stacking type hydraulic control check valve 156, high-pressure ball valve 13 are mainly when hydraulic cylinder 11 stops
When, hydraulic cylinder 11 is prevented because producing roll-off when Hydraulic Elements are leaked.
A Superimposed relief valve 14 in parallel on proportional reversing valve 10, proportional reversing valve 10 is two-position four-way solenoid valve,
Loading and pressure release transformation, are not in that emptying does not freely produce back pressure when servo hydraulic system can be made not work.
Counterbalance valve 16 is also equipped with the auxiliary oil way of fuel tank 17 and master unit, hydraulic cylinder 11 is prevented in the course of work
In, negative pressure is produced during decline so that hydraulic cylinder 11 sucks air, and generation is creeped.
In the present embodiment, the concrete structure of master unit does not elaborate, on the premise of it can realize synchronous working, main list
Unit can use different oil circuit patterns.
It is illustrated in figure 2 principle assumption diagram of the invention, 1# proportional reversing valve controlled output traffic driven 1# servo-hydraulics
Cylinder, detects that its signal is compared with 1# position signallings by the built-in mangneto displacement transducers of 1#；2# proportional reversing valve flows
Controlled output traffic driven 2# servo hydraulic cylinders, detect that its signal is believed with 2# positions by the built-in mangneto displacement transducers of 2#
Number it is compared.1# positions are compared with 2# positions again, make dynamic object value changes, so as to reach two servo-hydraulics
Cylinder dynamic synchronization.
The system is mainly commutated in actual application by programmable controller PLC, mangneto displacement transducer, ratio
Valve 10 is constituted.Its main operational principle：Mangneto displacement transducer detects the position of servo hydraulic cylinder 11, and proportional reversing valve 10 is controlled
Amount opening and the direction of motion, form ratio, an integration, that the pid algorithm of differential adjusts its is accurate in programmable controller PLC
Position；The dynamic position in two proportional servo cylinders does a secondary ratio, integration, differential pid algorithm again, makes its two servos
Cylinder dynamic synchronization.
Compared with open-loop control system, closed-loop control has series of advantages.In feedback control system, no matter for assorted
Reason (external disturbance or internal system change), as long as controlled variable deviates setting, will produce corresponding control action
Go to eliminate deviation.Therefore, it has the ability for suppressing interference, changes insensitive to element characteristic, and can improve the response of system
Characteristic.But the introducing of backfeed loop increased the complexity of system, and gain selection can not cause the unstable of system at that time.
To improve control accuracy, when disturbance variable can be measured, also often simultaneously using control (i.e. feedforward control) conduct by disturbance
The supplement of feedback control and constitute multiplex control system.
Advantages of the present invention：Each carry out calculating PID variable desired values in two hydraulic cylinders 11, then second carries out PID again
Computing, goes into a double closed-loop PID arithmetic system so that computing is accurate, and response is fast etc..
Controlled the present invention may also apply to two or the synchronization lifting of branched hydraulic cylinder 11 or flexible equipment and for precision
Multi-cylinder real time position processed.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of hydraulic servo synchronization system, it is characterised in that including：
Fuel tank (17), for storing fluid；
Auxiliary unit, with the auxiliary oil way for delivering oil；
Master unit, the first oil circuit, the second oil circuit with parallel connection and for delivering oil and the reversal valve (12) for commutating,
First oil circuit, the second oil circuit and reversal valve (12) are connected with auxiliary oil way.
2. hydraulic servo synchronization system according to claim 1, it is characterised in that the auxiliary unit, including with fuel tank
(17) hydraulic pump (5) and the motor (4) for driving hydraulic pump (5) of connection, the auxiliary oil way is with hydraulic pump (5) even
Lead to and check valve (6) is installed on auxiliary oil way.
3. hydraulic servo synchronization system according to claim 2, it is characterised in that the auxiliary unit is also pressed through including height
Filter (7), the high pressure filter (7) is installed in check valve (6) and the oil circuit of master unit between.
4. hydraulic servo synchronization system according to claim 2, it is characterised in that fuel tank (17) and hydraulic pump (5) it
Between auxiliary oil way on be also equipped with oil absorption filter (2).
5. hydraulic servo synchronization system according to claim 1, it is characterised in that pressure gauge is provided with auxiliary oil way
And accumulator (9) (8).
6. hydraulic servo synchronization system according to claim 1, it is characterised in that the first oil circuit of the master unit and
Two oil circuits are to include the proportional reversing valve (10), stacking type hydraulic control check valve (15), high-pressure ball valve (13) and the hydraulic pressure that are connected
Cylinder (11), installs built-in mangneto displacement transducer in the hydraulic cylinder (11), the built-in mangneto displacement transducer with than
Closed loop is formed between example reversal valve (10).
7. hydraulic servo synchronization system according to claim 1, it is characterised in that in parallel on the reversal valve (12)
Individual Superimposed relief valve (14).
8. hydraulic servo synchronization system according to claim 6, it is characterised in that the proportional reversing valve (10) is two
Four way solenoid valve.
9. hydraulic servo synchronization system according to claim 1, it is characterised in that be provided with liquid level gauge fuel tank (17) is inner
And air filter (3) (1).
10. hydraulic servo synchronization system according to claim 1, it is characterised in that in the auxiliary of fuel tank (17) and master unit
Help on oil circuit and be also equipped with counterbalance valve (16).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710251962.8A CN106884833A (en) | 2017-04-17 | 2017-04-17 | A kind of hydraulic servo synchronization system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710251962.8A CN106884833A (en) | 2017-04-17 | 2017-04-17 | A kind of hydraulic servo synchronization system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980208A (en) * | 2018-10-09 | 2018-12-11 | 杭州励贝电液科技有限公司 | A kind of superhigh precision pressure control device |
| CN109253119A (en) * | 2018-10-30 | 2019-01-22 | 太重榆次液压工业（上海）有限公司 | A kind of clamping unit transporting raceway |
| CN109458384A (en) * | 2018-12-11 | 2019-03-12 | 山东交通学院 | The symmetrical hydraulic cylinder propulsion system of double piston-rod is connected in series in shield excavation machine |
| CN110388341A (en) * | 2019-07-22 | 2019-10-29 | 深圳东风汽车有限公司 | The control method that the solenoid valve of hydraulic system commutates without clamping stagnation |
| CN113915528A (en) * | 2021-10-28 | 2022-01-11 | 广州文冲船厂有限责任公司 | Pressure distribution system |
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