CN103953614B - A kind of Hydrauservo System protection modular device - Google Patents
A kind of Hydrauservo System protection modular device Download PDFInfo
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- CN103953614B CN103953614B CN201410161680.5A CN201410161680A CN103953614B CN 103953614 B CN103953614 B CN 103953614B CN 201410161680 A CN201410161680 A CN 201410161680A CN 103953614 B CN103953614 B CN 103953614B
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Abstract
The invention belongs to for Hydrauservo System applied technical field; it is specifically related to a kind of Hydrauservo System protection modular device; purpose is to improve reliability and the security of Hydrauservo System; the Hydrauservo System protection modular device that system can be taked safety precautions, safeguards system and the operator safety such as holding or unloading timely and effectively by one according to operating mode is provided.It is characterized in that: include valve block block (1), servo valve (3), logical valve and solenoid directional control valve.Hydrauservo System of the present invention protection modular device simple in construction, easy to use, stability is preferable, and versatility and interchangeability are strong, failure rate is low, stable performance.Device volume is less, can need to be moved easily appropriate location according to system, can be separately installed with servo hydraulic cylinder, it is possible to be directly installed on servo hydraulic cylinder.Device, without complex operations, arranges simple.
Description
Technical field
The invention belongs to for Hydrauservo System applied technical field, be specifically related to a kind of hydraulic pressure and watch
Dress system protection modular device.
Background technology
Hydrauservo System due to volume and quality is little, power-weight ratio is big, control accuracy is high, easy
In realize move back and forth, be easily achieved large-scale stepless speed change, stable drive, length in service life,
The advantage such as easily operated, is widely used in Aero-Space, military project, traffic, boats and ships, mine etc.
In each industrial circle.
Hydrauservo System is generally made up of oil sources, pipeline, executing agency, control system etc..System
High-voltage oil liquid is supplied to executing agency by oil sources and pipeline by system, control system pass through servo valve
Deng controlling element, control executing agency and carry out compulsory exercise.Owing to Hydrauservo System generally works
In high pressure, high output loads or high-speed cruising state, its stability and security have the heaviest
The meaning wanted.Hydrauservo System once occurs abnormal work situation, system usually can be caused to lose
Control, executing agency botches routines, pressure exceedes the situations such as nominal working range, can damage time serious
Loading object, operating personnel and system are caused security incident, therefore, safety is protected the most reliably
Measure of protecting is necessary for Hydrauservo System.Abnormal work occurs in Hydrauservo System
When making situation, generally require executing agency and stop original action immediately, take to fit according to system condition
When measure, as keep current location, keep current loaded load or unloading immediately etc., with protect
Protect the safety of hydraulic system, target and operating personnel.
Application in the market has some devices that can shield, but these protection devices have
A little defencive functions are the most single, are only capable of realizing offloading functions；Some unit protection effect is undesirable,
Be likely to occur loaded load to keep incessantly, or can not de-preservation smoothly, or discharge rate is relatively slowly not
The problem such as 0 can be unloaded to immediately.Such issues that cause protection device bad stability, function can not
Meet system requirements.
Summary of the invention
It is an object of the invention to improve reliability and the security of Hydrauservo System, it is provided that Yi Zhongneng
Enough safety precautions such as holding or unloading of timely and effectively system being taked according to operating mode, guarantee system
The Hydrauservo System of system and operator safety protection modular device.
The present invention is achieved in that
A kind of Hydrauservo System protection modular device, including valve block block, servo valve, logic
Valve and solenoid directional control valve；Wherein, valve block block is the rectangular-shaped of inner hollow, is used for installing admittedly
Determine servo valve, logical valve and solenoid directional control valve, have four hydraulic fluid ports in its minor face both sides；Servo valve
Being arranged on valve block block top, servo valve receives the control signal that external control system sends, at this
Under the driving of control signal to supply servo hydraulic cylinder fluid be adjusted, make servo hydraulic cylinder by
Accurately perform according to compulsory exercise；Logical valve is arranged between servo valve and servo hydraulic cylinder, controls to watch
Taking hydraulic cylinder and servo valve and servo hydraulic cylinder and the connection of return line or disconnection, electromagnetism changes
It is arranged between logical valve and return line to valve, controls the opening and closing of logical valve.
Four hydraulic fluid ports of valve block block as above are respectively high-voltage power supply oil-in, oil return pipe road binders
Mouth, servo hydraulic cylinder the first hydraulic fluid port, servo hydraulic cylinder the second hydraulic fluid port, high-voltage power supply oil-in and high pressure
Source connects, and return line hydraulic fluid port is connected with return line, servo hydraulic cylinder the first hydraulic fluid port and servo-fluid
One cavity A chamber of cylinder pressure connects, another of servo hydraulic cylinder the second hydraulic fluid port and servo hydraulic cylinder
Individual cavity B chamber connects.
It also includes high-precision filter, and high-precision filter is arranged on valve block block side, high-precision
The high-voltage power supply oil-in of the oil-in and valve block block of spending filter is connected, to by its internal oil passages
Fluid filter, the oil-out of high-precision filter is connected with the high pressure oil-in of servo valve.
Logical valve as above includes the logical valve realizing keeping function and realizes offloading functions
Logical valve, wherein, it is achieved keep the logical valve of function to include the first logical valve and the second logical valve,
The logical valve realizing offloading functions includes the 3rd logical valve and the 4th logical valve；Solenoid directional control valve includes
Holding solenoid directional control valve and unloading solenoid directional control valve；Holding solenoid directional control valve includes the first guarantor
Hold with solenoid directional control valve and the second holding solenoid directional control valve；Unloading solenoid directional control valve includes first
Unloading solenoid directional control valve and the second unloading solenoid directional control valve.
The oil return inlet T mouth of servo valve as above is directly connected with return line R, an oil
One hydraulic fluid port A mouth of mouth A mouth and the first logical valve connects, and another hydraulic fluid port B mouth and second is patrolled
A bite hydraulic fluid port A mouth collecting valve connects.
One hydraulic fluid port A of the first logical valve as above is connected with a hydraulic fluid port A of servo valve,
Another hydraulic fluid port B is connected with a cavity A chamber of servo hydraulic cylinder；First holding electromagnetism changes
It is arranged between the control mouth X of the first logical valve and valve block block return line hydraulic fluid port to valve, control
Make the logic function of the first logical valve for opening or blocking；Act the one of the second logical valve keeping function
Individual hydraulic fluid port A is connected with another hydraulic fluid port B of servo valve, another hydraulic fluid port B and servo hydraulic cylinder
Another cavity B chamber connect；Second holding solenoid directional control valve is arranged on the second logical valve
Control, between mouth X and valve block block return line hydraulic fluid port, to control the logic function of the second logical valve
For opening or blocking；One hydraulic fluid port A of the 3rd logical valve playing offloading functions returns with valve block block
Oil pipe line hydraulic fluid port connects, and hydraulic fluid port is connected with another cavity B chamber of servo hydraulic cylinder；First unloads
Load solenoid directional control valve is arranged on control mouth X and the valve block block oil return pipe road binders of the 3rd logical valve
Between Kou, control the logic function of the 3rd logical valve for opening or blocking；Play the 4th of offloading functions the
One hydraulic fluid port A of logical valve is connected with valve block block return line hydraulic fluid port, another hydraulic fluid port B with
One cavity A chamber of servo hydraulic cylinder connects；Second unloading solenoid directional control valve is arranged on the 4th
Between control mouth X and the valve block block return line hydraulic fluid port of logical valve, control the 4th logical valve
Logic function is for opening or blocking.
Holding solenoid directional control valve as above uses normally closed type solenoid directional control valve, unloading electromagnetism
Reversal valve uses solenoid directional control valve open in usual or normally closed type solenoid directional control valve.
It also includes snap joint, and snap joint is arranged on four hydraulic fluid ports of valve block block.
The beneficial effects of the present invention is:
Hydrauservo System of the present invention protection modular device simple in construction, easy to use,
Stability is preferable, and versatility and interchangeability are strong, failure rate is low, stable performance.Device volume is less,
Can need to be moved easily appropriate location according to system, can be separately installed with servo hydraulic cylinder, it is possible to
It is directly installed on servo hydraulic cylinder.Device, without complex operations, arranges simple.
Accompanying drawing explanation
Fig. 1 is a kind of Hydrauservo System protection modular device schematic diagram of the present invention；
Fig. 2 is the front view of a kind of Hydrauservo System protection modular device of the present invention；
Fig. 3 is the top view of a kind of Hydrauservo System protection modular device of the present invention；
In figure, 1. valve block block, 2. plug, 3. servo valve, 4. high-precision filter, the most quickly connect
Head, 6. the first logical valve, 7. the second logical valve, 8. the 3rd logical valve, 9. the 4th logical valve, 10.
First holding solenoid directional control valve, 11. second holding solenoid directional control valves, 12. first unloading electricity consumptions
Magnetic reversal valve, 13. second unloading solenoid directional control valves, 14. bolts, 15. spring shims, 16. hydraulic pressure
ServoBcylinder.
Detailed description of the invention
With specific embodiment, a kind of Hydrauservo System of the present invention is protected below in conjunction with the accompanying drawings
Modular device is described:
As Figure 1-3, a kind of Hydrauservo System protection modular device, including valve block block
1, servo valve 3, high-precision filter 4, logical valve, solenoid directional control valve, snap joint 5, stifled
2, bolt 14 and spring shim 15.Wherein, valve block block 1 is the cuboid of inner hollow
Shape, be used for installing fixing servo valve 3, high-precision filter 4, logical valve, solenoid directional control valve and
Snap joint 5, has four hydraulic fluid ports in valve block block 1 minor face both sides, including high-voltage power supply oil-in,
Return line hydraulic fluid port, servo hydraulic cylinder the first hydraulic fluid port and servo hydraulic cylinder the second hydraulic fluid port, high-voltage power supply enters
Hydraulic fluid port is connected with high-voltage power supply, and return line hydraulic fluid port is connected with return line, servo hydraulic cylinder the first oil
Mouth is connected with a cavity A chamber of servo hydraulic cylinder 16, servo hydraulic cylinder the second hydraulic fluid port and servo
Another cavity B chamber of hydraulic cylinder 16 connects.Snap joint 5 is arranged on the two of valve block block 1
On four hydraulic fluid ports of bar oil circuit, quickly and pipeline joint can prevent oil liquid leakage in docking operation.
Logical valve includes realizing keeping the logical valve of function and realizing the logical valve of offloading functions, its
In, it is achieved keep the logical valve of function to include the first logical valve 6 and the second logical valve 7, it is achieved to unload
The logical valve carrying function includes the 3rd logical valve 8 and the 4th logical valve 9.Solenoid directional control valve includes protecting
Hold with solenoid directional control valve and unloading solenoid directional control valve.Holding solenoid directional control valve includes the first holding
With solenoid directional control valve 10 and the second holding solenoid directional control valve 11.Unloading solenoid directional control valve includes
First unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve 13.Each electromagnetic switch
The corresponding logical valve of valve, controls the switch of counterlogic valve.
Servo valve 3 is arranged on valve block block 1 top, servo by bolt 14 and spring shim 15
Valve 3 receives the control signal that external control system sends, to supply under the driving of this control signal
The fluid of servo hydraulic cylinder 16 is adjusted, and makes servo hydraulic cylinder 16 action according to the rules accurately hold
OK.In the present embodiment, the high pressure oil inlet P mouth of servo valve 3 and high-precision filter 4
Oil-out connects, and oil return inlet T mouth is directly connected with valve block block 1 return line hydraulic fluid port, one
One hydraulic fluid port A mouth of hydraulic fluid port A mouth and the first logical valve 6 connects, another hydraulic fluid port B mouth and the
A bite hydraulic fluid port A mouth of two logical valves 7 connects.The oil-in of high-precision filter 4 and valve block block
The high-voltage power supply oil-in of body 1 connects, and it is arranged on valve block block 1, to by its internal oil passages
Fluid filter.
In a kind of Hydrauservo System of the present invention protects an embodiment of modular device, on
State solenoid directional control valve and all use 24V direct current supply.Act the one of the first logical valve 6 keeping function
Individual hydraulic fluid port A is connected with a hydraulic fluid port A of servo valve 3, another hydraulic fluid port B and servo hydraulic cylinder
One cavity A chamber of 16 connects.First holding solenoid directional control valve 10 is arranged on the first logical valve
Between control mouth X and the valve block block 1 return line hydraulic fluid port of 6, control patrolling of the first logical valve 6
Collect function for opening or blocking.Rise keep function the second logical valve 7 a hydraulic fluid port A with watch
Another hydraulic fluid port B taking valve 3 connects, another of another hydraulic fluid port B and servo hydraulic cylinder 16
Cavity B chamber connects.Second holding solenoid directional control valve 11 is arranged on the control of the second logical valve 7
Between mouth X and valve block block 1 return line hydraulic fluid port, control the logic function of the second logical valve 7
For opening or blocking.Play a hydraulic fluid port A and the valve block block 1 of the 3rd logical valve 8 of offloading functions
Return line hydraulic fluid port connects, another hydraulic fluid port B and another cavity B chamber of servo hydraulic cylinder 16
Connect.First unloading solenoid directional control valve 12 is arranged on control mouth X and the valve of the 3rd logical valve 8
Between block block 1 return line hydraulic fluid port, control the logic function of the 3rd logical valve 8 for opening or hindering
Disconnected.Play a hydraulic fluid port A and valve block block 1 return line of the 4th logical valve 9 of offloading functions
Hydraulic fluid port connects, and another hydraulic fluid port B is connected with a cavity A chamber of servo hydraulic cylinder 16.Second
Unloading solenoid directional control valve 13 is arranged on the control mouth X of the 4th logical valve 9 and valve block block 1 time
Between oil pipe line hydraulic fluid port, control the logic function of the 4th logical valve 9 for opening or blocking.
Holding solenoid directional control valve uses normally closed type solenoid directional control valve.Unloading use solenoid directional control valve according to
Operating mode selects different types of solenoid directional control valve, when using solenoid directional control valve open in usual, electromagnetic switch
Module is protected to realize offloading functions in the case of the whole power down of valve preferential；Use normally closed type electromagnetic switch
During valve, module in the case of the whole power down of solenoid directional control valve, is protected to realize keeping function preferential.
Plug 2 is arranged on valve block block 1 side, for the fabrication hole of plugging valve block block 1, its
Quantity determines according to actual needs.
Embodiment one: protection modular device unloading solenoid directional control valve 12 and 13 of the present invention
Use solenoid directional control valve open in usual, now realize unloading merit under the protection whole power-down conditions of modular device
Energy.
During work, protection modular device of the present invention is in non-protect mode.Now first keeps
Powering on solenoid directional control valve 10 and the second holding solenoid directional control valve 11, they are operated in conducting shape
State, the control oil of the first logical valve 6 and the second logical valve 7 is by the first holding solenoid directional control valve
10 and second holding solenoid directional control valve 11 return to return line.Now, rise and keep the of function
One logical valve 6 and the second logical valve 7 are in opening state, make servo valve 3 and servo hydraulic cylinder
Fluid connection between 16.First unloading solenoid directional control valve 12 and the second unloading electromagnetic switch
Valve 13 powers on simultaneously, and they are operated in closure state, the first unloading solenoid directional control valve 12 and the
Two unloadings are oily by the control of the 3rd logical valve 8 and the 4th logical valve 9 respectively with solenoid directional control valve 13
Road cuts off, and oil circuit control can not connect return line R.Now, the 3rd logic of offloading functions is played
Valve 8 and the 4th logical valve 9 are in closure state, by servo hydraulic cylinder 16 and return line R it
Between oil circuit block.The high-voltage oil liquid filtration through high pressure filter 4 and the regulation control of servo valve 3
After system, entered the A (B) of servo hydraulic cylinder 16 by the first logical valve 6 (the second logical valve 7)
Chamber, promotes piston rod (left) the to the right motion of servo hydraulic cylinder 16, the B of servo hydraulic cylinder 16
(A) fluid in chamber is extruded, and returns to watch by the second logical valve 7 (the first logical valve 6)
Take valve 3, finally export from the hydraulic fluid port T of servo valve 3 and return to return line, form oil circulation,
Servo valve can normally control servo hydraulic cylinder action according to the rules and accurately perform.
When abnormality occurs in Hydrauservo System, use automatic or manual mode trigger protection mould
Block assembly so that it is be in protected mode.Protected mode has two kinds, a kind of for holding pattern, one
For unloading mode, operating personnel can select to arrange protected mode according to system applying working condition.
When triggering protection modular device of the present invention for holding pattern, the first holding electromagnetism changes
To valve 10 and the second holding solenoid directional control valve 11 dead electricity, they are operated in closure state, incite somebody to action
Keeping the first logical valve 6 of function and the oil circuit control of the second logical valve 7 to cut off, oil circuit control is not
Can connect return line R, now, the first logical valve 6 and the second logical valve 7 are in closure state,
Oil circuit between servo hydraulic cylinder 16 and servo valve 3 is blocked.Meanwhile, the first unloading electromagnetism
Reversal valve 12 and the second unloading solenoid directional control valve 13 power on, and they are operated in closure state, the
One unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve 13 will play the of offloading functions
The oil circuit control of three logical valves 8 and the 4th logical valve 9 cuts off, and oil circuit control can not connect oil return pipe
Road R, now, the 3rd logical valve 8 and the 4th logical valve 9 are in closure state, by servo-hydraulic
Oil circuit between cylinder 16 and return line R blocks.So, the fluid quilt of servo hydraulic cylinder 16
Quickly shutting at A, B two in chamber, servo hydraulic cylinder 16 keeps current stress state, protection
Modular device realizes keeping function.
When the protection modular device of the present invention is triggered as unloading mode, the first holding electromagnetic switch
Valve 10 and the second holding solenoid directional control valve 11 power on, and they are operated in opening state, rise and keep
First logical valve 6 of function and the control oil of the second logical valve 7 are by the first holding electromagnetic switch
Valve 10 and the second holding solenoid directional control valve 11 return to return line, the first logical valve 6 and second
Logical valve 7 is in opening state, is linked up by the oil circuit between servo hydraulic cylinder 16 and servo valve 3.
Meanwhile, the first unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve 13 dead electricity, it
Be operated in opening state equally, rise offloading functions the 3rd logical valve 8 and the 4th logical valve 9
Control oil respectively by the first unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve
13 return to return line, and the 3rd logical valve 8 and the 4th logical valve 9 are in opening state, will
Oil circuit between servo hydraulic cylinder 16 and return line R is linked up.Now, servo valve 3 A,
Fluid in the fluid of B mouth and 16 liang of chambeies of servo hydraulic cylinder passes through the 3rd logical valve 8 and the 4th
Logical valve 9 quick relief, protection modular device realizes offloading functions.
When system power supply occurs abnormal, during the protection whole dead electricity of module, the first holding electromagnetic switch
Valve 10 and second keeps unloading with solenoid directional control valve 12 and second with solenoid directional control valve 11, first
The unloading equal dead electricity of solenoid directional control valve 13.Now, first keeps with solenoid directional control valve 10 and second
Holding solenoid directional control valve 11 is operated in closure state, has made to keep the first logical valve 6 of function
It is in closure state, by between servo hydraulic cylinder 16 and servo valve 3 with the second logical valve 7
Oil circuit blocks；First unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve 13 work
At opening state, the 3rd logical valve 8 of offloading functions and the 4th logical valve 9 has been made to be in conducting
State, links up the oil circuit between servo hydraulic cylinder 16 and return line R.Now, servo valve
The output fluid of 3 can not enter servo hydraulic cylinder 16, and the fluid in 16 liang of chambeies of servo hydraulic cylinder leads to
Cross the 3rd logical valve 8 and the 4th logical valve 9 fast discharging.Under this operating mode, guarantor of the present invention
Protect modular device and realize offloading functions.
Embodiment two: protection modular device unloading solenoid directional control valve 12 and 13 of the present invention
Use normally closed type solenoid directional control valve, now realize keeping merit under the protection whole power-down conditions of modular device
Energy.
During work, protection modular device of the present invention is in non-protect mode.Now first keeps
Powering on solenoid directional control valve 10 and the second holding solenoid directional control valve 11, they are operated in conducting shape
State, the control oil of the first logical valve 6 and the second logical valve 7 is by the first holding solenoid directional control valve
10 and second holding solenoid directional control valve 11 return to return line.Now, rise and keep the of function
One logical valve 6 and the second logical valve 7 are in opening state, make servo valve 3 and servo hydraulic cylinder
Fluid connection between 16.First unloading solenoid directional control valve 12 and the second unloading electromagnetic switch
Valve 13 dead electricity, they are operated in closure state, and the first unloading solenoid directional control valve 12 and second unloads
The oil circuit control of the 3rd logical valve 8 and the 4th logical valve 9 is cut by load solenoid directional control valve 13 respectively
Disconnected, oil circuit control can not connect return line R.Now, the 3rd logical valve 8 of offloading functions is played
It is in closure state, by between servo hydraulic cylinder 16 and return line R with the 4th logical valve 9
Oil circuit blocks.High-voltage oil liquid after the regulation of the filtration of high pressure filter 4 and servo valve 3 controls,
A (B) chamber of servo hydraulic cylinder 16 is entered by the first logical valve 6 (the second logical valve 7),
Promote piston rod (left) the to the right motion of servo hydraulic cylinder 16, the B (A) of servo hydraulic cylinder 16
Fluid in chamber is extruded, and returns to servo valve 3 by the second logical valve 7 (the first logical valve 6),
Finally export from the hydraulic fluid port T of servo valve 3 and return to return line, form oil circulation, servo valve
Can normally control servo hydraulic cylinder action according to the rules accurately to perform.
When abnormality occurs in Hydrauservo System, use automatic or manual mode trigger protection mould
Block assembly so that it is be in protected mode.Protected mode has two kinds, a kind of for holding pattern, one
For unloading mode, operating personnel can select to arrange protected mode according to system applying working condition.
When triggering protection modular device of the present invention for holding pattern, the first holding electromagnetism changes
To valve 10 and the second holding solenoid directional control valve 11 dead electricity, they are operated in closure state, incite somebody to action
Keeping the first logical valve 6 of function and the oil circuit control of the second logical valve 7 to cut off, oil circuit control is not
Can connect return line R, now, the first logical valve 6 and the second logical valve 7 are in closure state,
Oil circuit between servo hydraulic cylinder 16 and servo valve 3 is blocked.Meanwhile, the first unloading electromagnetism
Reversal valve 12 and second unloads use solenoid directional control valve 13 dead electricity, and they are operated in closure state, the
One unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve 13 will play the of offloading functions
The oil circuit control of three logical valves 8 and the 4th logical valve 9 cuts off, and oil circuit control can not connect oil return pipe
Road R, now, the 3rd logical valve 8 and the 4th logical valve 9 are in closure state, by servo-hydraulic
Oil circuit between cylinder 16 and return line R blocks.So, the fluid quilt of servo hydraulic cylinder 16
Quickly shutting at A, B two in chamber, servo hydraulic cylinder 16 keeps current stress state, protection
Modular device realizes keeping function.
When the protection modular device of the present invention is triggered as unloading mode, the first holding electromagnetic switch
Valve 10 and the second holding solenoid directional control valve 11 power on, and they are operated in opening state, rise and keep
First logical valve 6 of function and the control oil of the second logical valve 7 are by the first holding electromagnetic switch
Valve 10 and the second holding solenoid directional control valve 11 return to return line, the first logical valve 6 and second
Logical valve 7 is in opening state, is linked up by the oil circuit between servo hydraulic cylinder 16 and servo valve 3.
Meanwhile, the first unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve 13 power on, it
Be operated in opening state equally, rise offloading functions the 3rd logical valve 8 and the 4th logical valve 9
Control oil respectively by the first unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve
13 return to return line, and the 3rd logical valve 8 and the 4th logical valve 9 are in opening state, will
Oil circuit between servo hydraulic cylinder 16 and return line R is linked up.Now, servo valve 3 A,
Fluid in the fluid of B mouth and 16 liang of chambeies of servo hydraulic cylinder passes through the 3rd logical valve 8 and the 4th
Logical valve 9 quick relief, protection modular device realizes offloading functions.
When system power supply occurs abnormal, during the protection whole dead electricity of module, the first holding electromagnetic switch
Valve 10 and second keeps unloading with solenoid directional control valve 12 and second with solenoid directional control valve 11, first
The unloading equal dead electricity of solenoid directional control valve 13.Now, first keeps with solenoid directional control valve 10 and second
Holding solenoid directional control valve 11 is operated in closure state, has made to keep the first logical valve 6 of function
It is in closure state, by between servo hydraulic cylinder 16 and servo valve 3 with the second logical valve 7
Oil circuit blocks；First unloading solenoid directional control valve 12 and the second unloading solenoid directional control valve 13 work
At closure state, the 3rd logical valve 8 of offloading functions and the 4th logical valve 9 has been made to be in Guan Bi
State, blocks the oil circuit between servo hydraulic cylinder 16 and return line R.Now, servo-fluid
The fluid of cylinder pressure 16 is quickly shut at A, B two in chamber, and servo hydraulic cylinder 16 keeps current
Stress state.Under this operating mode, protection modular device of the present invention realizes keeping function.
Hydrauservo System of the present invention protection modular device keeps effective, is in holding
In state 1 minute, pressure drop be not more than its load time operating pressure 5%；Device unloading speed
Hurry up, in 200ms, pressure can be down to 0MPa.
Hydrauservo System of the present invention protection modular device simple in construction, easy to use,
Stability is preferable, and versatility and interchangeability are strong, failure rate is low, stable performance.Device volume is less,
Can need to be moved easily appropriate location according to system, can be separately installed with servo hydraulic cylinder, it is possible to
It is directly installed on servo hydraulic cylinder.Device, without complex operations, arranges simple.
This device is not limited in Hydrauservo System, on the premise of without departing from present inventive concept
Can make a variety of changes and expand, such as can be applicable to the hydraulic proportional having identical safeguard measure demand
In other system such as system, it is equally applicable for the Hydrauservo System of other medium such as water, emulsion
In, equivalent effect can be played, the present invention is not described in detail.
Claims (4)
1. Hydrauservo System with protection a modular device, including valve block block (1), servo valve (3),
Logical valve and solenoid directional control valve；Wherein, valve block block (1) is the rectangular-shaped of inner hollow, is used for pacifying
The fixing servo valve (3) of dress, logical valve and solenoid directional control valve, have four hydraulic fluid ports in its minor face both sides；Watch
Taking valve (3) and be arranged on valve block block (1) top, servo valve (3) receives what external control system sent
Control signal, is adjusted the fluid of supply servo hydraulic cylinder (16) under the driving of this control signal,
Servo hydraulic cylinder (16) action according to the rules is made accurately to perform；Logical valve is arranged on servo valve (3) and watches
Take between hydraulic cylinder (16), control servo hydraulic cylinder (16) and servo valve and servo hydraulic cylinder (16)
Connection with return line or disconnection, solenoid directional control valve is arranged between logical valve and return line, controls
The opening and closing of logical valve；
Four hydraulic fluid ports of described valve block block (1) be respectively high pressure fuel source oil-in, return line hydraulic fluid port,
Servo hydraulic cylinder the first hydraulic fluid port, servo hydraulic cylinder the second hydraulic fluid port, high pressure fuel source oil-in is connected with high-voltage power supply,
Return line hydraulic fluid port is connected with return line, servo hydraulic cylinder the first hydraulic fluid port and servo hydraulic cylinder (16)
One cavity A chamber connects, servo hydraulic cylinder the second hydraulic fluid port and another cavity of servo hydraulic cylinder (16)
B chamber connects；
Described logical valve includes realizing keeping the logical valve of function and realizing the logical valve of offloading functions, its
In, it is achieved keep the logical valve of function to include the first logical valve (6) and the second logical valve (7), it is achieved to unload
The logical valve carrying function includes the 3rd logical valve (8) and the 4th logical valve (9)；Solenoid directional control valve includes protecting
Hold with solenoid directional control valve and unloading solenoid directional control valve；Holding solenoid directional control valve includes the first holding electricity consumption
Magnetic reversal valve (10) and second keeps with solenoid directional control valve (11)；Unloading solenoid directional control valve includes first
Unloading solenoid directional control valve (12) and the second unloading solenoid directional control valve (13)；
The oil return inlet T mouth of described servo valve (3) directly connects with valve block block (1) return line hydraulic fluid port
Connecing, a hydraulic fluid port A mouth of a hydraulic fluid port A mouth and the first logical valve (6) connects, another hydraulic fluid port B
Mouth is connected with a hydraulic fluid port A mouth of the second logical valve (7)；
One hydraulic fluid port A of described the first logical valve (6) is connected with a hydraulic fluid port A of servo valve (3),
Another hydraulic fluid port B is connected with a cavity A chamber of servo hydraulic cylinder (16)；First holding electromagnetism changes
Control mouth X and valve block block (1) the oil return pipe road binders of the first logical valve (6) it is arranged on to valve (10)
Between Kou, control the logic function of the first logical valve (6) for opening or blocking；Rise and keep the second of function
One hydraulic fluid port A of logical valve (7) is connected with another hydraulic fluid port B of servo valve (3), another hydraulic fluid port
B is connected with another cavity B chamber of servo hydraulic cylinder (16)；Second keeps with solenoid directional control valve (11)
It is arranged between the control mouth X of the second logical valve (7) and valve block block (1) return line hydraulic fluid port, control
Make the logic function of the second logical valve (7) for opening or blocking；Play the 3rd logical valve (8) of offloading functions
A hydraulic fluid port A be connected with valve block block (1) return line hydraulic fluid port, another hydraulic fluid port B and servo-fluid
Another cavity B chamber of cylinder pressure (16) connects；First unloading solenoid directional control valve (12) is arranged on
Between control mouth X and valve block block (1) the return line hydraulic fluid port of three logical valves (8), control the 3rd and patrol
Collect the logic function of valve (8) for opening or blocking；Play of the 4th logical valve (9) of offloading functions
Hydraulic fluid port A is connected with valve block block (1) return line hydraulic fluid port, another hydraulic fluid port B and servo hydraulic cylinder (16)
Cavity A chamber connect；Second unloading solenoid directional control valve (13) is arranged on the 4th logical valve (9)
Control mouth X and valve block block (1) return line hydraulic fluid port between, control the patrolling of the 4th logical valve (9)
Collect function for opening or blocking.
A kind of Hydrauservo System protection modular device the most according to claim 1, its feature exists
In: it also includes that high-precision filter (4), high-precision filter (4) are arranged on valve block block (1)
Side, the oil-in of high-precision filter (4) is connected with the high-voltage power supply oil-in of valve block block (1),
Filter by the fluid of its internal oil passages, the oil-out of high-precision filter (4) and servo valve (3)
High pressure oil-in connect.
A kind of Hydrauservo System protection modular device the most according to claim 1, its feature exists
In: described holding solenoid directional control valve uses normally closed type solenoid directional control valve, and unloading solenoid directional control valve is adopted
With solenoid directional control valve open in usual or normally closed type solenoid directional control valve.
A kind of Hydrauservo System protection modular device the most according to claim 1, its feature exists
In: it also includes that snap joint (5), snap joint (5) are arranged on four oil of valve block block (1)
On mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410161680.5A CN103953614B (en) | 2014-04-21 | 2014-04-21 | A kind of Hydrauservo System protection modular device |
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| CN201410161680.5A CN103953614B (en) | 2014-04-21 | 2014-04-21 | A kind of Hydrauservo System protection modular device |
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| CN103953614B true CN103953614B (en) | 2016-08-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201255147Y (en) * | 2008-09-05 | 2009-06-10 | 郑州大方桥梁机械有限公司 | Multifunction driving liquid controlled valve |
| CN102410283A (en) * | 2011-10-19 | 2012-04-11 | 无锡市海航电液伺服系统有限公司 | Hydraulic protection modular structure of servo actuator |
| CN103148041A (en) * | 2013-03-07 | 2013-06-12 | 北京理工大学 | Energy-saving active/passive load double electrohydraulic servo valve control system and control method thereof |
| CN204003794U (en) * | 2014-04-21 | 2014-12-10 | 天津航天瑞莱科技有限公司 | A kind of Hydrauservo System protection module device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4898652B2 (en) * | 2007-12-26 | 2012-03-21 | 三菱重工業株式会社 | Fluid pressure actuator system and control method of fluid pressure actuator system |
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2014
- 2014-04-21 CN CN201410161680.5A patent/CN103953614B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201255147Y (en) * | 2008-09-05 | 2009-06-10 | 郑州大方桥梁机械有限公司 | Multifunction driving liquid controlled valve |
| CN102410283A (en) * | 2011-10-19 | 2012-04-11 | 无锡市海航电液伺服系统有限公司 | Hydraulic protection modular structure of servo actuator |
| CN103148041A (en) * | 2013-03-07 | 2013-06-12 | 北京理工大学 | Energy-saving active/passive load double electrohydraulic servo valve control system and control method thereof |
| CN204003794U (en) * | 2014-04-21 | 2014-12-10 | 天津航天瑞莱科技有限公司 | A kind of Hydrauservo System protection module device |
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| CN103953614A (en) | 2014-07-30 |
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