CN205533544U - Take fault self diagnosis's pneumatic cylinder position to follow system - Google Patents
Take fault self diagnosis's pneumatic cylinder position to follow system Download PDFInfo
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- CN205533544U CN205533544U CN201620274920.7U CN201620274920U CN205533544U CN 205533544 U CN205533544 U CN 205533544U CN 201620274920 U CN201620274920 U CN 201620274920U CN 205533544 U CN205533544 U CN 205533544U
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Abstract
The utility model relates to a take fault self diagnosis's pneumatic cylinder position to follow system, this system comprises electromagnetism logic switch valve, hydraulically controlled check valve, speed adjustor, overflow valve, check valve, pressure sensor, electromagnetic on -off valve, pneumatic cylinder, displacement sensor and electrical control unit, through the break -make electricity of each electromagnetism logic switch valve of logic control, electromagnetism direction valve, electromagnetic on -off valve electro -magnet, the state monitor sensor's on combination pressure sensor and the electromagnetism logic switch valve value of feedback, the electrical control unit can judge automatically whether certain electromagnetism logic switch valve breaks down, adopt the utility model discloses the system is can be rapidly automatic judges the hydraulic pressure components and parts that break down, and operating personnel can promptly and accurately change the electromagnetism logic switch valve that breaks down, shortens the maintenance duration of equipment greatly, improve equipment's maintenance efficiency, the reliability service of guarantee production line.
Description
Technical field
This utility model relates to a kind of Position of Hydraulic Cylinder system for tracking, is specifically related to a kind of tape jam self diagnosis
Position of Hydraulic Cylinder system for tracking.
Background technology
In the production line of continuous casting steel machine, for slab thickness Position of Hydraulic Cylinder closed-loop control system generally by
Servo valve or proportioning valve control, owing to servo valve or proportioning valve are more sensitive to the cleannes of fluid,
The jam phenomenon of servo valve or proportioning valve often occurs in equipment runs, and servo valve or proportioning valve
Price comparison is expensive, causes manufacturing enterprise's production run relatively costly.
In recent years, along with the fast development of hydraulic technique, have developed and be applicable to the special of slab thickness control
Hydraulic component.But owing in a continuous casting steel machine production line, this slab thickness control number of devices is more,
These slab thicknesses generally having the most up to a hundred sets of tens sets control equipment, when certain or multiple thickness control
When control equipment breaks down, trouble shoot and eliminating become extremely difficult, considerably increase maintenance difficulty and prolong
Grow maintenance time, cause the properly functioning of equipment to be severely impacted.
Summary of the invention
The purpose of this utility model is to provide the Position of Hydraulic Cylinder system for tracking of a kind of tape jam self diagnosis, the suitableeest
The Position of Hydraulic Cylinder closed-loop control system adjusted for continuous casting steel machine slab thickness, this utility model not only substitutes
Expensive servo valve or proportioning valve realize the automatically controlling of slab thickness, thus effectively save equipment
Cost of investment and production run cost, and when this slab thickness control system breaks down, can rapidly certainly
The hydraulic component that dynamic judgement is broken down, makes operator change the hydraulic pressure unit broken down timely and accurately
Device, effectively shortens the maintenance time of equipment, improves the maintenance efficiency of equipment, ensures the reliable fortune of production line
OK.
In order to achieve the above object, the technical solution of the utility model is:
The Position of Hydraulic Cylinder system for tracking of a kind of tape jam self diagnosis, including electromagnetic direction valve 1, the first electromagnetism is patrolled
Collect switch valve the 201, second electromagnetism logic switch valve 202, first hydraulic control one-way valve the 301, second fluid-control one-way
Valve 302, First Speed actuator 401, second speed actuator 402, the first electromagnetism on-off valve 501,
Two electromagnetism on-off valves 502, first pressure transducer the 601, second pressure transducer 602, overflow valve 7, single
To valve 8, hydraulic cylinder 9, displacement transducer 10 and electric control unit 11；
Being provided with displacement transducer 10 on described hydraulic cylinder 9, the plug chamber of hydraulic cylinder 9 connects the first electromagnetism break-make
The main hydraulic fluid port A of valve 501, pressure oil port P of the first electromagnetism on-off valve 501 passes through First Speed actuator 401
It is connected with the main hydraulic fluid port B of the first hydraulic control one-way valve 301, the main hydraulic fluid port A and of the first hydraulic control one-way valve 301
The main hydraulic fluid port A of one electromagnetism logic switch valve 201 connects, pressure oil port P of the first electromagnetism logic switch valve 201
Be connected with the main hydraulic fluid port B of electromagnetic direction valve 1, the oil return inlet T of the first electromagnetism logic switch valve 201 with from
The main return line T0 of Hydraulic Station is connected, pressure oil port P of electromagnetic direction valve 1 and the master from Hydraulic Station
Pressure piping P0 connects, the oil return inlet T of electromagnetic direction valve 1 and the main return line T0 phase from Hydraulic Station
Connect；The plug chamber of hydraulic cylinder 9 connects the main hydraulic fluid port B, the main hydraulic fluid port A of check valve 8 of check valve 8 and from liquid
The main return line T0 at pressure station is connected；Pressure oil port P of described first electromagnetism on-off valve 501 and the first speed
Between degree actuator 401, first pressure transducer 601 is installed；The control of described first hydraulic control one-way valve 301
The hydraulic fluid port A of hydraulic fluid port X and the second electromagnetism logic switch valve 202 is connected, letting out of the first hydraulic control one-way valve 301
Hydraulic fluid port Y is connected with the main return line T0 from Hydraulic Station；The bar chamber of hydraulic cylinder 9 connects the second electromagnetism and leads to
The main hydraulic fluid port A of disconnected valve 502, pressure oil port P of the second electromagnetism on-off valve 502 passes through second speed actuator
402 are connected with the main hydraulic fluid port B of the second hydraulic control one-way valve 302, the main hydraulic fluid port A of the second hydraulic control one-way valve 302 with
The main hydraulic fluid port A of the second electromagnetism logic switch valve 202 connects, the pressure oil of the second electromagnetism logic switch valve 202
Mouthful P is connected with the main hydraulic fluid port B of electromagnetic direction valve 1, the oil return inlet T of the second electromagnetism logic switch valve 202 and
Main return line T0 from Hydraulic Station is connected；The bar chamber of hydraulic cylinder 9 connects the pressure oil port of overflow valve 7
P, the oil return inlet T of overflow valve 7 is connected with the main return line T0 from Hydraulic Station；Described second electromagnetism
Between pressure oil port P and the second speed actuator 402 of on-off valve 502, second pressure transducer 602 is installed；
The control port X and the main hydraulic fluid port A of the first electromagnetism logic switch valve 201 of described second hydraulic control one-way valve 302
Being connected, the drain tap Y of the second hydraulic control one-way valve 302 is connected with the main return line T0 from Hydraulic Station；
Described first pressure transducer the 601, second pressure transducer 602 and be arranged on hydraulic cylinder 9 displacement pass
Sensor 10 is connected with electric control unit 11 by cable, the electric magnet a of the first electromagnetism on-off valve 501,
The electric magnet a of the second electromagnetism on-off valve 502 is connected with electric control unit 11 by cable, the first electromagnetism
The electric magnet a of logic switch valve 201, the electric magnet a of the second electromagnetism logic switch valve 202, electromagnetic direction valve
The electric magnet a of 1 is connected with electric control unit 11 by cable, the first electromagnetism logic switch valve 201
State-detection s, state-detection s of the second electromagnetism logic switch valve 202 pass through cable and electric control unit
11 are connected, and electric control unit 11 is provided power supply V by outside.
By First Speed controller 401 set in advance, the opening degree of second speed controller 402 and tune
Save the electric magnet a's of the electric magnet a of the first electromagnetism logic switch valve 201, the second electromagnetism logic switch valve 202
Dutycycle realizes being precisely controlled hydraulic cylinder 9 location following.
By controlling the electric magnet a power-off of electromagnetic direction valve 1, the electric magnet a of the first electromagnetism on-off valve 501
The electric magnet a power-off of power-off and the second electromagnetism on-off valve 502, the position of hydraulic cylinder 9 can be by positive lock.
The fault self-diagnosis method of the Position of Hydraulic Cylinder system for tracking of a kind of tape jam self diagnosis described above,
When the location following of hydraulic cylinder 9 breaks down, fault self-diagnosis method is as follows:
1. the electric magnet a energising of electromagnetic direction valve 1, the electric magnet a of the first electromagnetism on-off valve 501 is kept to break
Electricity, the electric magnet a power-off of the second electromagnetism on-off valve 502, now: the first electromagnetism logic switch valve 201
Electric magnet a power-off, the electric magnet a power-off of the second electromagnetism logic switch valve 202；If the first pressure sensing
Device 601 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the first electromagnetism logic switch valve 201
Status monitoring s be operating position, then the first electromagnetism logic switch valve 201 breaks down；If the second pressure
Force transducer 602 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the second electromagnetism logic is opened
The status monitoring s closing valve 202 is operating position, then the second electromagnetism logic switch valve 202 breaks down；
2. the electric magnet a energising of electromagnetic direction valve 1, the electric magnet a of the first electromagnetism on-off valve 501 is kept to break
Electricity, the electric magnet a power-off of the second electromagnetism on-off valve 502, now: the first electromagnetism logic switch valve 201
Electric magnet a energising, the electric magnet a power-off of the second electromagnetism logic switch valve 202；If the first pressure sensing
Device 601 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the first electromagnetism logic switch valve 201
Status monitoring s be operating position, then the first electromagnetism logic switch valve 201 is working properly；If the first pressure
The force value of force transducer 601 does not change and is the return pressure value from Hydraulic Station return line T0
T ', and the status monitoring s of the first electromagnetism logic switch valve 201 is off-position, then the first electromagnetism logic
Switch valve 201 breaks down；
3. the electric magnet a energising of electromagnetic direction valve 1, the electric magnet a of the first electromagnetism on-off valve 501 is kept to break
Electricity, the electric magnet a power-off of the second electromagnetism on-off valve 502, now: the second electromagnetism logic switch valve 202
Electric magnet a energising, the electric magnet a power-off of the first electromagnetism logic switch valve 201；If the second pressure sensing
Device 602 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the second electromagnetism logic switch valve 202
Status monitoring s be operating position, then the second electromagnetism logic switch valve 202 is working properly；If the second pressure
The force value of force transducer 602 does not change and is the return pressure value from Hydraulic Station return line T0
T ', and the status monitoring s of the second electromagnetism logic switch valve 202 is off-position, then the second electromagnetism logic
Switch valve 202 breaks down.
The most relatively, the utility model has the advantages that:
1) servo valve or proportioning valve is replaced to realize hydraulic cylinder by the electromagnetism logic switch valve of miniaturization
The accurate control of position, is greatly saved the Installed capital cost of equipment, and reduce the later stage of manufacturing enterprise
Spare part production run cost.
2) automatically controlled by electromagnetism logic switch valve, electromagnetism on-off valve and pressure sensing by electric control unit
The control system of the composition such as device, by detection pressure transducer and electromagnetism logic switch valve status monitoring sensor
Value of feedback, electric control unit can accurate certain or the fault of multiple electromagnetism logic switch valve of automatic decision.
So using this method energy hydraulic component that automatic decision breaks down rapidly, operator can be accurate in time
Really change the electromagnetism logic switch valve broken down, be greatly shortened the maintenance time of equipment, improve equipment
Maintenance efficiency, ensures the reliability service of production line.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is further described in detail:
Fig. 1 is this utility model system hydraulic schematic diagram.
Detailed description of the invention
As it is shown in figure 1, the Position of Hydraulic Cylinder system for tracking of a kind of tape jam self diagnosis, including electromagnetic direction valve 1,
First electromagnetism logic switch valve the 201, second electromagnetism logic switch valve 202, the first hydraulic control one-way valve 301,
Two hydraulic control one-way valves 302, First Speed actuator 401, second speed actuator 402, the first electromagnetism break-make
Valve the 501, second electromagnetism on-off valve 502, first pressure transducer the 601, second pressure transducer 602, overflows
Stream valve 7, check valve 8, hydraulic cylinder 9, displacement transducer 10 and electric control unit 11.
Being provided with displacement transducer 10 on described hydraulic cylinder 9, the plug chamber of hydraulic cylinder 9 connects the first electromagnetism break-make
The main hydraulic fluid port A of valve 501, pressure oil port P of the first electromagnetism on-off valve 501 passes through First Speed actuator 401
It is connected with the main hydraulic fluid port B of the first hydraulic control one-way valve 301, the main hydraulic fluid port A and of the first hydraulic control one-way valve 301
The main hydraulic fluid port A of one electromagnetism logic switch valve 201 connects, pressure oil port P of the first electromagnetism logic switch valve 201
Be connected with the main hydraulic fluid port B of electromagnetic direction valve 1, the oil return inlet T of the first electromagnetism logic switch valve 201 with from
The main return line T0 of Hydraulic Station is connected, pressure oil port P of electromagnetic direction valve 1 and the master from Hydraulic Station
Pressure piping P0 connects, the oil return inlet T of electromagnetic direction valve 1 and the main return line T0 phase from Hydraulic Station
Connect；The plug chamber of hydraulic cylinder 9 connects the main hydraulic fluid port B, the main hydraulic fluid port A of check valve 8 of check valve 8 and from liquid
The main return line T0 at pressure station is connected；Pressure oil port P of described first electromagnetism on-off valve 501 and the first speed
Between degree actuator 401, first pressure transducer 601 is installed；The control of described first hydraulic control one-way valve 301
The hydraulic fluid port A of hydraulic fluid port X and the second electromagnetism logic switch valve 202 is connected, letting out of the first hydraulic control one-way valve 301
Hydraulic fluid port Y is connected with the main return line T0 from Hydraulic Station；The bar chamber of hydraulic cylinder 9 connects the second electromagnetism and leads to
The main hydraulic fluid port A of disconnected valve 502, pressure oil port P of the second electromagnetism on-off valve 502 passes through second speed actuator
402 are connected with the main hydraulic fluid port B of the second hydraulic control one-way valve 302, the main hydraulic fluid port A of the second hydraulic control one-way valve 302 with
The main hydraulic fluid port A of the second electromagnetism logic switch valve 202 connects, the pressure of the second electromagnetism logic switch valve (202)
Hydraulic fluid port P is connected with the main hydraulic fluid port B of electromagnetic direction valve 1, the oil return inlet T of the second electromagnetism logic switch valve 202 with
Main return line T0 from Hydraulic Station is connected；The bar chamber of hydraulic cylinder 9 connects the pressure oil port of overflow valve 7
P, the oil return inlet T of overflow valve 7 is connected with the main return line T0 from Hydraulic Station；Described second electromagnetism
Between pressure oil port P and the second speed actuator 402 of on-off valve 502, second pressure transducer 602 is installed；
The control port X and the main hydraulic fluid port A of the first electromagnetism logic switch valve 201 of described second hydraulic control one-way valve 302
Being connected, the drain tap Y of the second hydraulic control one-way valve 302 is connected with the main return line T0 from Hydraulic Station.
First pressure transducer the 601, second pressure transducer 602 and be arranged on the displacement transducer of hydraulic cylinder 9
10 are connected with electric control unit 11 by cable, the electric magnet a of the first electromagnetism on-off valve 501, second
The electric magnet a of electromagnetism on-off valve 502 is connected with electric control unit 11 by cable, the first electromagnetism logic
The electric magnet a of switch valve 201, the electric magnet a of the second electromagnetism logic switch valve 202, electromagnetic direction valve 1
Electric magnet a is connected with electric control unit 11 by cable, the state of the first electromagnetism logic switch valve 201
Detection s, state-detection s of the second electromagnetism logic switch valve 202 pass through cable and electric control unit 11 phase
Connecting, electric control unit 11 is provided power supply V by outside.
As it is shown in figure 1, automatic fault diagnosis method based on Position of Hydraulic Cylinder system for tracking, by electrical control
Unit 11 is by the power on/off of logic control electromagnetic direction valve 1 electric magnet a, the first electromagnetism logic switch valve 201
The power on/off of electric magnet a, the power on/off of the second electromagnetism logic switch valve 202 electric magnet a, the first electromagnetism are logical
The disconnected power on/off of valve 501 electric magnet a, the power on/off of the second electromagnetism on-off valve 502 electric magnet a, in conjunction with the
State prison on one pressure transducer the 601, second pressure transducer the 602, first electromagnetism logic switch valve 201
The value of feedback of the status monitoring sensor s on survey sensor s, the second electromagnetism logic switch valve 202, electric-controlled
Unit 11 processed can automatic decision the first electromagnetism logic switch valve the 201, second electromagnetism logic switch valve 202 whether
Break down.Electric control unit 11 finally can accurately judge first electromagnetism logic switch valve the 201, second electricity
Whether magnetic logic switch valve 202 breaks down.
Described electromagnetic direction valve 1 controls for the opening and closing of pressure oil-source.
Described first electromagnetism logic switch valve the 201, second electromagnetism logic switch valve 202 is miniaturization electromagnetism
Logic switch valve, this valve motional inertia is little, fast response time, control mode are simple and cheap.Described
First electromagnetism logic switch valve 201 is used for the plug chamber controlling to inject hydraulic cylinder 9 from the pressure oil-source of Hydraulic Station,
And control hydraulic cylinder 9 and fill in the fluid in chamber and flow back to Hydraulic Station oil return opening, the most described electromagnetism logic switch valve 201
Sensor s is monitored with location status.Described second electromagnetism logic switch valve 202 is for controlling from Hydraulic Station
Pressure oil-source inject the bar chamber of hydraulic cylinder 9, and the fluid controlling hydraulic cylinder 9 bar chamber flows back to Hydraulic Station oil return
Mouthful, the most described electromagnetism logic switch valve 202 monitors sensor s with location status.
Described first hydraulic control one-way valve 301 and the second hydraulic control one-way valve 302 are for hydraulic cylinder 9 under normal circumstances
Position keep.
Described First Speed actuator 401, second speed actuator 402 are used for setting the speed of hydraulic cylinder 9,
Make hydraulic cylinder 9 energy steady operation.
Described first electromagnetism on-off valve 501 and the second electromagnetism on-off valve 502 hydraulic cylinder 9 under accident condition
Emergency lock.
Described first pressure transducer 601 fills in the pressure detecting of chamber hydraulic circuit for hydraulic cylinder 9, and described the
Two pressure transducers 602 are for the pressure detecting of the bar chamber hydraulic circuit of hydraulic cylinder 9.
Described overflow valve 7, for preventing the bar cavity pressure of hydraulic cylinder 9 from exceeding safety value, protects hydraulic cylinder 9
Bar chamber, play safety overflow effect.
Described check valve 8, for the repairing of the plunger shaft of hydraulic cylinder 9, prevents hydraulic cylinder 9 from filling in chamber and is emptied, and damages
Bad hydraulic cylinder sealing element.
Described 10 accurately detect for the position of hydraulic cylinder 9 for displacement transducer, and open with the first electromagnetism logic
Close valve 201 and the second electromagnetism logic switch valve 202 forms location following closed-loop control system.
Described electric control unit 11 can be made up of computer, PLC or single-chip microcomputer.
The location following of hydraulic cylinder 9 controls to be detected in real time the actual bit of hydraulic cylinder 9 by electric control unit 11
Put value, and compared with setup control positional value, if actual position value and the error of setup control positional value
Exceed value range set in advance, then realize location following control by following steps:
1. electric control unit 11 keep the electric magnet a of electromagnetic direction valve 1 to be energized, the first electromagnetism on-off valve
The electric magnet a energising of 501, the electric magnet a energising of the second electromagnetism on-off valve 501, be arranged on hydraulic cylinder 9
Displacement transducer 10 detect the actual position value of hydraulic cylinder 9 in real time；When the real time position value of hydraulic cylinder 9 is little
When setup control positional value, the electric magnet a energising of the first electromagnetism logic switch valve 201, the second electromagnetism are patrolled
The electric magnet a power-off of volume switch valve 202, from the pressure oil-source of Hydraulic Station principal pressure pipeline P0 through electromagnetism side
Pressure oil port P entering the first electromagnetism logic switch valve 201 by main hydraulic fluid port B to the hydraulic fluid port P of valve 1 is laggard
Become owner of hydraulic fluid port A, then pass sequentially through the first hydraulic control one-way valve 301, First Speed controller the 401, first electromagnetism
The plunger shaft of hydraulic cylinder 9 is injected after on-off valve 501；The hydraulic oil being simultaneously from hydraulic cylinder 9 bar chamber leads to successively
Cross the second electromagnetism on-off valve 502, second speed controller the 402, second hydraulic control one-way valve 302 enters the second electricity
The main hydraulic fluid port A of magnetic logic on-off valve 202, oil return inlet T flow back to the main return line T0 of Hydraulic Station, hydraulic cylinder 9
Moving forward, the real time position value of hydraulic cylinder 9 is approached to setup control positional value.When setup control positional value
When setting numerical value more than certain, the electric magnet a of the first electromagnetism logic switch valve 201 persistently electric, second is electric
The electric magnet a of magnetic logic switch valve 202 continues power-off, and hydraulic cylinder 9 quickly approaches to setup control positional value,
The speed of hydraulic cylinder 9 is determined by the aperture of First Speed actuator 401 and second speed actuator 402；When
Setup control positional value is less than when setting certain numerical value, and the first electromagnetism logic is reconciled in electric control unit 11 modulation
The dutycycle of the electric magnet a of switch valve 201, and the electric magnet a of the second electromagnetism logic switch valve 202 is lasting
Power-off, hydraulic cylinder 9 approaches to setup control positional value at a slow speed, and the speed of hydraulic cylinder 9 is by the first electromagnetism logic
The dutycycle of electric magnet a of switch valve 201, First Speed actuator 301 and second speed actuator 302
Aperture determine.
2. electric control unit 11 keep the electric magnet a of electromagnetic direction valve 1 to be energized, the first electromagnetism on-off valve
The electric magnet a energising of 501, the electric magnet a energising of the second electromagnetism on-off valve 501, be arranged on hydraulic cylinder 9
Displacement transducer 10 detect the actual position value of hydraulic cylinder 9 in real time；When the real time position value of hydraulic cylinder 9 is big
When setup control positional value, the electric magnet a energising of the second electromagnetism logic switch valve 202, the first electromagnetism are patrolled
The electric magnet a power-off of volume switch valve 201, from the pressure oil-source of Hydraulic Station principal pressure pipeline P0 through electromagnetism side
Pressure oil port P entering the second electromagnetism logic switch valve 202 by main hydraulic fluid port B to the hydraulic fluid port P of valve 1 is laggard
Become owner of hydraulic fluid port A, then pass sequentially through the second hydraulic control one-way valve 302, second speed actuator the 402, second electromagnetism
The bar chamber of hydraulic cylinder 9 is injected after on-off valve 502；It is simultaneously from hydraulic cylinder 9 to fill in the hydraulic oil in chamber and pass sequentially through
First electromagnetism on-off valve 501, First Speed actuator the 401, first hydraulic control one-way valve 301 enter the first electromagnetism
The main hydraulic fluid port A of logic on-off valve 201, oil return inlet T flow back to the main return line T0 of Hydraulic Station, hydraulic cylinder 9
Being moved rearwards by, the real time position value of hydraulic cylinder 9 is approached to setup control positional value.When setup control positional value
When setting numerical value more than certain, the electric magnet a of the second electromagnetism logic switch valve 202 persistently electric, first is electric
The electric magnet a of magnetic logic switch valve 201 continues power-off, and hydraulic cylinder 9 quickly approaches to setup control positional value,
The speed of hydraulic cylinder 9 is determined by the aperture of second speed actuator 402 and First Speed actuator 401；When
When setup control positional value sets numerical value less than certain, the second electromagnetism logic is reconciled in electric control unit 11 modulation
The dutycycle of the electric magnet a of switch valve 202, and the electric magnet a of the first electromagnetism logic switch valve 201 is lasting
Power-off, hydraulic cylinder 9 approaches to setup control positional value at a slow speed, and the speed of hydraulic cylinder 9 is by the second electromagnetism logic
The dutycycle of electric magnet a of switch valve 202, second speed actuator 302 and First Speed actuator 301
Aperture determine.
3., in hydraulic cylinder 9 work process, due to hydraulic cylinder 9 or the internal leakage of hydraulic component, cause
Hydraulic cylinder 9 physical location changes, when position change value exceedes specification error, and electric control unit 11
Automatically adjust the position deviation value of hydraulic cylinder 9 according to above-mentioned action 1., 2., make the actual bit of hydraulic cylinder 9
Put in the range of value is controlled automatically at specification error, thus automatically control the positional value of hydraulic cylinder 9 in real time.
4. occurring uncontrollable accident, the such as displacement of hydraulic cylinder 9 out of control when hydraulic cylinder 9, the first electromagnetism is patrolled
Collecting the frequent power on/off of switch valve the 201, second electromagnetism logical valve 202 etc., now electric control unit 11 controls
The electric magnet a power-off of electromagnetic direction valve 1, the electric magnet a power-off of the first electromagnetism on-off valve 501, the second electricity
The electric magnet a power-off of magnetic on-off valve 502, the position of hydraulic cylinder 9 will be locked, it is to avoid the generation of accident.
By First Speed controller 401 set in advance, the opening degree of second speed controller 402 and whole
Set the tone the dutycycle of electric magnet a of joint first electromagnetism logic switch valve the 201, second electromagnetism logic switch valve 202
Can realize hydraulic cylinder 9 location following is precisely controlled.
The location following of hydraulic cylinder 9 controls to be automatically controlled action completed by above-mentioned, the position of hydraulic cylinder 9 with
During with system jam, automatic diagnosis method is as follows:
When the location following of given setting position value and hydraulic cylinder 9 controls not respond in time t0 or liquid
When the position of cylinder pressure 9 occurs frequently to adjust in the range of the value of setting position, then electric control unit 11 can be sentenced
Disconnected is owing to the first electromagnetism logic switch valve 201 or the second electromagnetism logic switch valve 202 there is a problem and lead
Cause the generation of fault.Electric control unit 11 startup separator diagnoses automatically:
1. the electric magnet a energising of electromagnetic direction valve 1, the electric magnet a of the first electromagnetism on-off valve 501 is kept to break
Electricity, the electric magnet a power-off of the second electromagnetism on-off valve 502, now: the first electromagnetism logic switch valve 201
Electric magnet a power-off, the electric magnet a power-off of the second electromagnetism logic switch valve 202；If the first pressure sensing
Device 601 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the first electromagnetism logic switch valve 201
Status monitoring s be operating position, then the first electromagnetism logic switch valve 201 breaks down；If the second pressure
Force transducer 602 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the second electromagnetism logic is opened
The status monitoring s closing valve 202 is operating position, then the second electromagnetism logic switch valve 202 breaks down.
This automatic diagnosis method forms mode is attributed to as follows:
2. the electric magnet a energising of electromagnetic direction valve 1, the electric magnet a of the first electromagnetism on-off valve 501 is kept to break
Electricity, the electric magnet a power-off of the second electromagnetism on-off valve 502, now: the first electromagnetism logic switch valve 201
Electric magnet a energising, the electric magnet a power-off of the second electromagnetism logic switch valve 202；If the first pressure sensing
Device 601 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the first electromagnetism logic switch valve 201
Status monitoring s be operating position, then the first electromagnetism logic switch valve 201 is working properly；If the first pressure
The force value of force transducer 601 does not change and is the return pressure from hydraulic pressure station owner return line T0
Be worth T ', and the status monitoring s of the first electromagnetism logic switch valve 201 is off-position, then the first electromagnetism is patrolled
Collect switch valve 201 to break down.
This automatic diagnosis method forms mode is attributed to as follows:
3. the electric magnet a energising of electromagnetic direction valve 1, the electric magnet a of the first electromagnetism on-off valve 501 is kept to break
Electricity, the electric magnet a power-off of the second electromagnetism on-off valve 502, now: the second electromagnetism logic switch valve 202
Electric magnet a energising, the electric magnet a power-off of the first electromagnetism logic switch valve 201；If the second pressure sensing
Device 602 is the system pressure value P ' from Hydraulic Station pressure piping P0, and the second electromagnetism logic switch valve 202
Status monitoring s be operating position, then the second electromagnetism logic switch valve 202 is working properly；If the second pressure
The force value of force transducer 602 does not change and is the return pressure from hydraulic pressure station owner return line T0
Be worth T ', and the status monitoring s of the second electromagnetism logic switch valve 202 is off-position, then the second electromagnetism is patrolled
Collect switch valve 202 to break down.
This automatic diagnosis method forms mode is attributed to as follows:
The utility model has the advantages that: replaced servo valve or ratio by the electromagnetism logic switch valve of miniaturization
Example valve realizes the accurate control to Position of Hydraulic Cylinder, is greatly saved the Installed capital cost of equipment, and subtracts
The spare part production run cost in the later stage of few manufacturing enterprise.
Meanwhile, electric control unit automatically controls and is passed by electromagnetism logic switch valve, electromagnetism on-off valve and pressure
The control system of the composition such as sensor, is sensed by detection pressure transducer and electromagnetism logic switch valve status monitoring
The value of feedback of device, electric control unit can accurately certain or the event of multiple electromagnetism logic switch valve of automatic decision
Barrier.So use this method can hydraulic component that rapidly automatic decision breaks down, operator can and
Time change the electromagnetism logic switch valve broken down exactly, be greatly shortened the maintenance time of equipment, raising sets
Standby maintenance efficiency, ensures the reliability service of production line.
Parts that the present embodiment describes the most in detail and structure belong to the well-known components of the industry and common structure or often
By means, describe the most one by one.
Claims (1)
1. the Position of Hydraulic Cylinder system for tracking of a tape jam self diagnosis, it is characterised in that: include electromagnetism direction
Valve (1), the first electromagnetism logic switch valve (201), the second electromagnetism logic switch valve (202), the first hydraulic control one-way valve
(301), the second hydraulic control one-way valve (302), First Speed actuator (401), second speed actuator (402),
One electromagnetism on-off valve (501), the second electromagnetism on-off valve (502), the first pressure transducer (601), the second pressure pass
Sensor (602), overflow valve (7), check valve (8), hydraulic cylinder (9), displacement transducer (10) and electric control unit
(11)；
Being provided with displacement transducer (10) on described hydraulic cylinder (9), the plug chamber of hydraulic cylinder (9) connects the first electromagnetism
The main hydraulic fluid port A of on-off valve (501), pressure oil port P of the first electromagnetism on-off valve (501) is regulated by First Speed
Device (401) is connected with the main hydraulic fluid port B of the first hydraulic control one-way valve (301), the main oil of the first hydraulic control one-way valve (301)
The main hydraulic fluid port A of mouth A and the first electromagnetism logic switch valve (201) connects, the first electromagnetism logic switch valve (201)
Pressure oil port P be connected with the main hydraulic fluid port B of electromagnetic direction valve (1), the first electromagnetism logic switch valve (201)
Oil return inlet T be connected with the main return line T0 from Hydraulic Station, the pressure oil of electromagnetic direction valve (1)
Mouthful P is connected with the principal pressure pipeline P0 from Hydraulic Station, the oil return inlet T of electromagnetic direction valve (1) and from
The main return line T0 of Hydraulic Station is connected；The plug chamber of hydraulic cylinder (9) connects the main hydraulic fluid port B of check valve (8),
The main hydraulic fluid port A of check valve (8) is connected with the main return line T0 from Hydraulic Station；Described first electromagnetism leads to
Between pressure oil port P and the First Speed actuator (401) of disconnected valve (501), the first pressure transducer is installed
(601)；The control port X of described first hydraulic control one-way valve (301) and the second electromagnetism logic switch valve (202)
Hydraulic fluid port A is connected, the drain tap Y of the first hydraulic control one-way valve (301) and the main return line T0 from Hydraulic Station
It is connected；The bar chamber of hydraulic cylinder (9) connects the main hydraulic fluid port A of the second electromagnetism on-off valve (502), the second electromagnetism break-make
Pressure oil port P of valve (502) is by the main oil of second speed actuator (402) with the second hydraulic control one-way valve (302)
Mouth B connects, the main hydraulic fluid port A of the second hydraulic control one-way valve (302) and the master of the second electromagnetism logic switch valve (202)
Hydraulic fluid port A connects, pressure oil port P of the second electromagnetism logic switch valve (202) and electromagnetic direction valve (1)
Main hydraulic fluid port B connects, the oil return inlet T of the second electromagnetism logic switch valve (202) and the main oil return from Hydraulic Station
Pipeline T0 is connected；The bar chamber of hydraulic cylinder (9) connects pressure oil port P of overflow valve (7), returning of overflow valve (7)
Hydraulic fluid port T is connected with the main return line T0 from Hydraulic Station；The pressure of described second electromagnetism on-off valve (502)
Second pressure transducer (602) is installed between power hydraulic fluid port P and second speed actuator (402)；Described second
The control port X of hydraulic control one-way valve (302) and the main hydraulic fluid port A of the first electromagnetism logic switch valve (201) is connected,
The drain tap Y of the second hydraulic control one-way valve (302) is connected with the main return line T0 from Hydraulic Station；
Described first pressure transducer (601), the second pressure transducer (602) and be arranged on the position of hydraulic cylinder (9)
Displacement sensor (10) is connected with electric control unit (11) by cable, the electricity of the first electromagnetism on-off valve (501)
Magnet a, the electric magnet a of the second electromagnetism on-off valve (502) are connected with electric control unit (11) by cable,
The electric magnet a of the first electromagnetism logic switch valve (201), the electric magnet a of the second electromagnetism logic switch valve (202),
The electric magnet a of electromagnetic direction valve (1) is connected with electric control unit (11) by cable, the first electromagnetism logic
State-detection s of switch valve (201), the second electromagnetism logic switch valve (202) state-detection s by cable with
Electric control unit (11) is connected, and electric control unit (11) is provided power supply V by outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274920.7U CN205533544U (en) | 2016-04-05 | 2016-04-05 | Take fault self diagnosis's pneumatic cylinder position to follow system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274920.7U CN205533544U (en) | 2016-04-05 | 2016-04-05 | Take fault self diagnosis's pneumatic cylinder position to follow system |
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| CN205533544U true CN205533544U (en) | 2016-08-31 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650061A (en) * | 2016-04-05 | 2016-06-08 | 中国重型机械研究院股份公司 | Hydraulic cylinder position following system with fault self-diagnosis function and control method |
| CN110135066A (en) * | 2019-05-15 | 2019-08-16 | 北京交通大学 | A kind of method for diagnosing faults of dynamic power shift gear box pilot operated compound relief valve |
| CN110262444A (en) * | 2018-03-12 | 2019-09-20 | 罗斯蒙特公司 | Field device switch monitors device |
| US11821951B2 (en) | 2021-09-29 | 2023-11-21 | Rosemount Inc. | Field device switch monitoring |
-
2016
- 2016-04-05 CN CN201620274920.7U patent/CN205533544U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650061A (en) * | 2016-04-05 | 2016-06-08 | 中国重型机械研究院股份公司 | Hydraulic cylinder position following system with fault self-diagnosis function and control method |
| CN110262444A (en) * | 2018-03-12 | 2019-09-20 | 罗斯蒙特公司 | Field device switch monitors device |
| CN110262444B (en) * | 2018-03-12 | 2023-03-10 | 罗斯蒙特公司 | On-off monitor for field device |
| CN110135066A (en) * | 2019-05-15 | 2019-08-16 | 北京交通大学 | A kind of method for diagnosing faults of dynamic power shift gear box pilot operated compound relief valve |
| US11821951B2 (en) | 2021-09-29 | 2023-11-21 | Rosemount Inc. | Field device switch monitoring |
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