CN104214157B - A kind of electrichydraulic control reversal valve and electrohydraulic control system - Google Patents
A kind of electrichydraulic control reversal valve and electrohydraulic control system Download PDFInfo
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- CN104214157B CN104214157B CN201410423870.XA CN201410423870A CN104214157B CN 104214157 B CN104214157 B CN 104214157B CN 201410423870 A CN201410423870 A CN 201410423870A CN 104214157 B CN104214157 B CN 104214157B
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Abstract
The invention discloses a kind of electrichydraulic control reversal valve and electrohydraulic control system, belong to hydraulic valve piece field.Described electrichydraulic control reversal valve includes: the first inserted valve, second inserted valve and two four-way electromagnetic reversing valves, the A mouth of the first inserted valve and the A mouth connection of the second inserted valve, the P1 mouth connection of the X mouth of the first inserted valve and two four-way electromagnetic reversing valves, the P2 mouth connection of the X mouth of the second inserted valve and two four-way electromagnetic reversing valves, the P3 mouth of two four-way electromagnetic reversing valves is interconnected with B mouth and first actuator of described first inserted valve, described two four-way electromagnetic reversing valve the first actuators are interconnected, B mouth and second actuator of described two four-way electromagnetic reversing valves are interconnected.Described electrohydraulic control system includes: electrichydraulic control reversal valve, hydraulic pump and actuator.Described electrichydraulic control reversal valve includes inserted valve and two four-way electromagnetic reversing valves so that this valve has bigger negotiability.
Description
Technical field
The present invention relates to hydraulic valve piece field, particularly to a kind of electrichydraulic control reversal valve and electrohydraulic control system.
Background technology
Existing electrichydraulic control reversal valve is the combination of solenoid directional control valve and pilot operated directional control valve, and this electrichydraulic control is changed
It is connected between hydraulic pump and actuator to valve, for changing the flow direction of the hydraulic oil provided by hydraulic pump,
Make hydraulic oil can flow into actuator, thus control actuator work.
At present, in the hydraulic system of deck machinery, the maximum flow of each hydraulic pump can be up to
4000L/min, and the maximum stream flow of existing electrichydraulic control reversal valve is less than 500L/min so that existing
Electrichydraulic control reversal valve can not meet the hydraulic pump mating big flow.If electrichydraulic control reversal valve is replaced with greatly
Hands behaviour's reversal valve of flow, then hands behaviour reversal valve can not realize electrichydraulic control, reduces the automatic of hydraulic system
Change degree.
Summary of the invention
In order to solve the problem that in prior art, electrichydraulic control reversal valve flow is little, embodiments provide
A kind of electrichydraulic control reversal valve and electrohydraulic control system.Described technical scheme is as follows:
On the one hand, the invention provides a kind of electrichydraulic control reversal valve, described electrichydraulic control reversal valve includes:
First inserted valve, the second inserted valve and two four-way electromagnetic reversing valves, the A mouth of described first inserted valve and institute
State the A mouth connection of the second inserted valve, the X mouth of described first inserted valve and described two four-way electromagnetic reversing valves
P1 mouth connection, the X mouth of described second inserted valve connects with the P2 mouth of described two four-way electromagnetic reversing valves,
The P3 mouth of described two four-way electromagnetic reversing valves is mutual with the B mouth of described first inserted valve and the first actuator
Connection, described two four-way electromagnetic reversing valve the first actuators are interconnected, and described two four-way electromagnetics change
It is interconnected to B mouth and second actuator of valve.
Specifically, described electrichydraulic control reversal valve includes the first repairing check valve and the second repairing check valve, institute
The B mouth of the oil-in and described first inserted valve of stating the first repairing check valve connects, and described first repairing is unidirectional
The oil-out of valve connects with the X mouth of described first inserted valve, the oil-in of described second repairing check valve and institute
State the B mouth connection of the second inserted valve, the oil-out of described second repairing check valve and described second inserted valve
X mouth connects.
Specifically, described electrichydraulic control reversal valve also includes: the first check valve and the second check valve, described
The oil-in of one check valve connects with the A mouth of described first inserted valve, the oil-out of described first check valve with
The X mouth connection of described first inserted valve, the oil-in of described second check valve and the A of described second inserted valve
Mouth connection, the oil-out of described second check valve connects with the X mouth of described second inserted valve.
Further, after the oil-out of described first check valve connects with the X mouth of described first inserted valve, then
And the pipeline between the oil-out of described first repairing check valve and the P1 mouth of described two four-way electromagnetic reversing valves
Connection, after the oil-out of described second check valve connects with the X mouth of described second inserted valve, then with described the
Pipeline connection between oil-out and the P2 mouth of described two four-way electromagnetic reversing valves of two repairing check valves.
Specifically, described electrichydraulic control reversal valve also includes the 3rd check valve, described 3rd check valve fuel-displaced
Mouth respectively with the A mouth of described first inserted valve, the X mouth of described first inserted valve, described second inserted valve
The X mouth of A mouth and described first inserted valve is interconnected.
On the other hand, embodiments providing a kind of electrohydraulic control system, described system includes: electro-hydraulic
Control reversal valve, hydraulic pump and at least two actuator, the oil-out of described hydraulic pump and described electro-hydraulic control
The P mouth connection of reversal valve processed；
Described electrichydraulic control reversal valve includes: the first inserted valve, the second inserted valve and two four-way electromagnetic commutations
Valve, the A mouth of described first inserted valve connects and connects with the A mouth of described second inserted valve in described electro-hydraulic control
The P mouth of reversal valve processed, the X mouth of described first inserted valve and the P1 mouth of described two four-way electromagnetic reversing valves are even
Logical, the X mouth of described second inserted valve connects with the P2 mouth of described two four-way electromagnetic reversing valves, described two
The P3 mouth of four-way electromagnetic reversing valve connects with the B mouth of described first inserted valve and connects and changes in described electrichydraulic control
To the A mouth of valve, the P4 mouth of described two four-way electromagnetic reversing valves connects with the B mouth of described second inserted valve
And connect the B mouth at described electrichydraulic control reversal valve；
When described actuator is two and the respectively first actuator and the second actuator, described
One actuator includes motor and the hand-operated direction valve of the first actuator of the first actuator, described first
The A mouth of the hand-operated direction valve of actuator connects with the A mouth of the motor of described first actuator, and described
The B mouth of the hand-operated direction valve of one actuator connects with the B mouth of the motor of described first actuator, described
The T mouth of the hand-operated direction valve of the first actuator and the connection of the first fuel tank, described first actuator manual
The P mouth of reversal valve connects with the A mouth of described electrichydraulic control reversal valve, and described second actuator includes second
The motor of actuator and the hand-operated direction valve of the second actuator, the manual reverse of direction of described second actuator
The A mouth of valve connects with the A mouth of the motor of described second actuator, manually changing of described second actuator
B mouth to the B mouth of valve with the motor of described second actuator connects, described second actuator manual
The T mouth of reversal valve and the connection of the second fuel tank, the P mouth of the hand-operated direction valve of described second actuator is with described
The B mouth connection of electrichydraulic control reversal valve；
When described actuator is three and the respectively the 3rd actuator, the 4th actuator and the 5th execution
During mechanism, described hydraulic pump is two and the respectively first hydraulic pump and the second hydraulic pump, described electrichydraulic control
Reversal valve is two and the respectively first electrichydraulic control reversal valve and the second electrichydraulic control reversal valve, the described 3rd
Actuator includes motor and the hand-operated direction valve of the 3rd actuator of the 3rd actuator, and the described 3rd holds
The A mouth of the hand-operated direction valve of row mechanism connects with the A mouth of the motor of described 3rd actuator, and the described 3rd
The B mouth of the hand-operated direction valve of actuator connects with the B mouth of the motor of described 3rd actuator, and described
The T mouth of the hand-operated direction valve of three actuators and the connection of the 3rd fuel tank, manually changing of described 3rd actuator
A1 mouth to the P mouth of valve with described first electrichydraulic control reversal valve connects, and described 4th actuator includes
The motor of four actuators and the hand-operated direction valve of the 4th actuator, manually changing of described 4th actuator
A mouth to the A mouth of valve with the motor of described 4th actuator connects, described 4th actuator manual
The B mouth of reversal valve connects with the B mouth of the motor of described 4th actuator, the hands of described 4th actuator
The T mouth of dynamic reversal valve and the connection of the 4th fuel tank, the P mouth of the hand-operated direction valve of described 4th actuator is respectively
Connect with the A2 mouth of the B1 mouth of described first electrichydraulic control reversal valve and described second electrichydraulic control reversal valve,
Described 5th actuator includes motor and the hand-operated direction valve of the 5th actuator of the 5th actuator, institute
The A mouth of hand-operated direction valve stating the 5th actuator connects with the A mouth of the motor of described 5th actuator,
The B mouth of the hand-operated direction valve of described 5th actuator connects with the B mouth of the motor of described 5th actuator,
The T mouth of the hand-operated direction valve of described 5th actuator and the connection of the 5th fuel tank, described 5th actuator
The P mouth of hand-operated direction valve connects with the B2 mouth of described second electrichydraulic control reversal valve, described first hydraulic pump
The oil-out of oil-out and described second hydraulic pump respectively with P1 mouth and the institute of described first electrichydraulic control reversal valve
State the P2 mouth connection of the second electrichydraulic control reversal valve.
Specifically, described electrohydraulic control system includes the first repairing check valve and the second repairing check valve, described
The oil-in of the first repairing check valve connects with the B mouth of described first inserted valve, described first repairing check valve
Oil-out connect with the X mouth of described first inserted valve, the oil-in of described second repairing check valve is with described
The B mouth connection of the second inserted valve, the oil-out of described second repairing check valve and the X of described second inserted valve
Mouth connection.
Specifically, described electrohydraulic control system also includes: the first check valve and the second check valve, described first
The oil-in of check valve connects with the A mouth of described first inserted valve, the oil-out of described first check valve and institute
State the X mouth connection of the first inserted valve, the oil-in of described second check valve and the A mouth of described second inserted valve
Connection, the oil-out of described second check valve connects with the X mouth of described second inserted valve.
Specifically, after the oil-out of described first check valve connects with the X mouth of described first inserted valve, then with
Pipeline between oil-out and the P1 mouth of described two four-way electromagnetic reversing valves of described first repairing check valve is even
Logical, after the oil-out of described second check valve connects with the X mouth of described second inserted valve, then with described second
Pipeline connection between oil-out and the P2 mouth of described two four-way electromagnetic reversing valves of repairing check valve.
Specifically, it is provided with between oil-out and the P mouth of described electrichydraulic control reversal valve of described hydraulic pump
Three check valves, the described oil-in of the 3rd check valve connects with the oil-out of described hydraulic pump, and the described 3rd is single
P mouth to the oil-out of valve with described electrichydraulic control reversal valve connects.
The technical scheme that the embodiment of the present invention provides has the benefit that the electricity that the embodiment of the present invention provides
Hydraulic control reversal valve coordinates two four-way electromagnetic reversing valves by two inserted valves, when two four-way electromagnetics
Reversal valve must not electricity time, the first inserted valve opens, and the second inserted valve is closed, and fluid flows into from the first inserted valve
Actuator, when two four-way electromagnetic reversing valves obtain electric, the first inserted valve is closed, and the second inserted valve is opened,
Fluid flows into another actuator from the second inserted valve, it is achieved thereby that the commutation of fluid；Simultaneously as should
The oil-in of two four-way electromagnetic reversing valves is that the X mouth with two inserted valves connects, and the X of two inserted valves
The oil pressure of mouth is less, so these two four-way electromagnetic reversing valves can apply to play in this electrichydraulic control reversal valve
The effect of guide；It is additionally, since this inserted valve and there is bigger negotiability, so this electrichydraulic control commutation
Valve has bigger negotiability, it is possible to be applicable to the hydraulic pump that flow is 4000L/min.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the electrichydraulic control reversal valve that the embodiment of the present invention one provides；
Fig. 2 is the schematic diagram of the electrohydraulic control system that the embodiment of the present invention two provides；
Fig. 3 is the schematic diagram of the electrohydraulic control system that the embodiment of the present invention three provides.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment is described in further detail.
Embodiment one
Embodiments provide a kind of electrichydraulic control reversal valve, as it is shown in figure 1, this electrichydraulic control commutation
Valve includes: the first inserted valve the 101, second inserted valve 102 and two four-way electromagnetic reversing valves 4, the first plug-in mounting
The A mouth of valve 101 and the A mouth connection of the second inserted valve 102, the X mouth of the first inserted valve 101 and two four
The P1 mouth connection of electric change valve 4, the X mouth of the second inserted valve 102 and two four-way electromagnetic reversing valves 4
P2 mouth connection, the P3 mouth of two four-way electromagnetic reversing valves 4 and the B mouth and first of the first inserted valve 101
Actuator (not shown) is interconnected, the P4 mouth of two four-way electromagnetic reversing valves 4 and the second inserted valve
B mouth and second actuator of 102 are interconnected.
Specifically, electrichydraulic control reversal valve includes the first repairing check valve 301 and the second repairing check valve 302,
The oil-in of the first repairing check valve 301 and the B mouth connection of the first inserted valve 101, the first repairing check valve
The X mouth connection of the oil-out of 301 and the first inserted valve 101, the oil-in of the second repairing check valve 302 with
The B mouth connection of the second inserted valve 102, the oil-out of the second repairing check valve 302 and the second inserted valve 102
X mouth connection.The effect of the first repairing check valve 301 is when the first inserted valve 101 is closed,
The first inserted valve 101 is prevented to be unlocked.The action principle of the second repairing check valve 302 is unidirectional with the first repairing
The action principle of valve 301 is identical.
Specifically, electrichydraulic control reversal valve can also include: the first check valve 201 and the second check valve 202,
The oil-in of the first check valve 201 and the A mouth connection of the first inserted valve 101, going out of the first check valve 201
The X mouth connection of hydraulic fluid port and the first inserted valve 101, the oil-in of the second check valve 202 and the second inserted valve 102
The connection of A mouth, the oil-out of the second check valve 202 connects with the X mouth of the second inserted valve 102.This is first years old
Check valve 201 and the second check valve 202 are closed for improving the first inserted valve 101 and the second inserted valve 102
Time reliability.Specifically, the second check valve must not be sketched as a example by electricity by two four-way electromagnetic reversing valve 4a
The operation principle of 202, two four-way electromagnetic reversing valve 4a must not make two four-way electromagnetic reversing valve 4a's by electricity
P2 mouth does not connects with P4 mouth, when the A mouth of hydraulic oil flow to the second inserted valve 102, and a part of hydraulic oil
Flow in the second check valve 202, and flow at the X mouth of the second inserted valve 102 by the second check valve 202,
Pressure suffered by the X mouth of the second inserted valve 102 is increased (due to two four-way electromagnetic reversing valve 4a's
P2 mouth is in cut-off state, so being Hydrostatic Transfer Device between the A mouth of the second inserted valve 102a and X mouth, and i.e.
The A mouth of two inserted valves 102 is equal by the pressure of hydraulic oil be subject at X mouth), because hydraulic oil to be opened
During the second inserted valve 102, need to overcome the spring force of the second inserted valve 102 and the second inserted valve valve 102
At the pressure suffered by X mouth, so increasing the second inserted valve valve 102 at the pressure suffered by X mouth so that the
The hydraulic oil of the A mouth of two inserted valve valves 102 is more difficult to open the second inserted valve valve 102 so that at two four-ways
When the P2 mouth of solenoid directional control valve 4a does not connects with P4 mouth, the closedown of the second inserted valve valve 102 is more reliable.
Further, after the oil-out of the first check valve 201 and the X mouth connection of the first inserted valve 101, then
And the pipeline between the oil-out of the first repairing check valve 301 and the P1 mouth of two four-way electromagnetic reversing valves 4 is even
Logical, after the oil-out of the second check valve 202 connects with the X mouth of the second inserted valve 102, then with the second repairing
Pipeline connection between the P2 mouth of the oil-out of check valve 302 and two four-way electromagnetic reversing valves 4.By inciting somebody to action
Oil circuit is associated with and beneficially simplifies oil circuit, reduces the volume of electrichydraulic control reversal valve.
Specifically, electrichydraulic control reversal valve can also include the 3rd check valve 9, the oil-out of the 3rd check valve 9
Respectively with the A mouth of the first inserted valve 101, the X mouth of the first inserted valve 101, the A of the second inserted valve 102
The X mouth of mouth and the first inserted valve 101 is interconnected.3rd check valve 9 is used for preventing hydraulic oil from refluxing.
The electrichydraulic control reversal valve that the embodiment of the present invention provides coordinates one two four energisings by two inserted valves
Magnetic reversal valve, when two four-way electromagnetic reversing valves must not electricity time, the first inserted valve opens, and the second inserted valve closes
Closing, fluid flows into actuator from the first inserted valve, and when two four-way electromagnetic reversing valves obtain electric, first inserts
Dress valve cuts out, and the second inserted valve is opened, and fluid flows into another actuator from the second inserted valve, thus realizes
The commutation of fluid；Simultaneously as the oil-in of these two four-way electromagnetic reversing valves is and the X of two inserted valves
Mouth connection, and the oil pressure of the X mouth of two inserted valves is less, so these two four-way electromagnetic reversing valves can be applied
The effect of guide is played in this electrichydraulic control reversal valve；It is additionally, since this inserted valve and there is bigger circulation
Ability, so this electrichydraulic control reversal valve has bigger negotiability, it is possible to being applicable to flow is
The hydraulic pump of 4000L/min.
Embodiment two
Embodiments provide a kind of electrohydraulic control system, as in figure 2 it is shown, this system includes: implement
Electrichydraulic control reversal valve 1a, hydraulic pump 7a and at least two actuator that example one provides, hydraulic pump 7a's
Oil-out connects with the P mouth of electrichydraulic control reversal valve 1a, and electrichydraulic control reversal valve 1a includes: the first plug-in mounting
Valve 101a, the second inserted valve 102a and two four-way electromagnetic reversing valve 4a, the A mouth of the first inserted valve 101a
Connect and connect the P mouth at electrichydraulic control reversal valve 1a, the first plug-in mounting with the A mouth of the second inserted valve 102a
The P1 mouth connection of the X mouth of valve 101a and two four-way electromagnetic reversing valve 4a, the X of the second inserted valve 102a
Mouthful connect with the P2 mouth of two four-way electromagnetic reversing valve 4a, the P3 mouth of two four-way electromagnetic reversing valve 4a with
The B mouth of the first inserted valve 101a connects and connects the A mouth at electrichydraulic control reversal valve 1a, two four energisings
The P4 mouth of magnetic reversal valve 4a and the B mouth of the second inserted valve 102a connect and connect at electrichydraulic control reversal valve 1a
B mouth.
When actuator is two and the respectively first actuator 901a and the second actuator 902a, the
One actuator 901a includes motor 5a1 and the hand-operated direction valve of the first actuator of the first actuator
6a1, the A mouth of the hand-operated direction valve 6a1 of the first actuator and the A mouth of the motor 5a1 of the first actuator
Connection, the B mouth of the hand-operated direction valve 6a1 of the first actuator and the B of the motor 5a1 of the first actuator
Mouth connection, the T mouth of the hand-operated direction valve 6a1 of the first actuator and the first fuel tank 8a1 connection, first holds
The P mouth of the hand-operated direction valve 6a1 of row mechanism connects with the A mouth of electrichydraulic control reversal valve 1a, and second performs machine
Structure 902a includes the motor 5a2 of the second actuator and the hand-operated direction valve 6a2 of the second actuator, second
The A mouth connection of the A mouth of the hand-operated direction valve 6a2 of actuator and the motor 5a2 of the second actuator, the
The B mouth connection of the B mouth of the hand-operated direction valve 6a2 of two actuators and the motor 5a2 of the second actuator,
The T mouth of the hand-operated direction valve 6a2 of the second actuator and the second fuel tank 8a2 connection, hand-operated direction valve 6a2
P mouth connect with the B mouth of electrichydraulic control reversal valve 1a.
Specifically, this electrohydraulic control system can include the first repairing check valve 301a and the second repairing check valve
The oil-in of 302a, the first repairing check valve 301a and the B mouth connection of the first inserted valve 101a, first mends
The oil-out of oil check valve 301a and the X mouth connection of the first inserted valve 101a, the second repairing check valve 302a
Oil-in and the B mouth connection of the second inserted valve 102a, the oil-out of the second repairing check valve 302a and the
The X mouth connection of two inserted valve 102a.At the first inserted valve 101a or the A mouth of the second inserted valve 102a and B
When mouth does not connects, when the B mouth of inserted valve has pressure oil, the B mouth of inserted valve is made to end to A mouth, specifically
Ground, as a example by the A mouth of the first inserted valve 101a does not connects with B mouth, introduces the first repairing check valve 301a
Operation principle, the active area of the A mouth of the first inserted valve 101a and the pressure of X mouth is respectively A1, A2,
And A2 > A1, the active area of the B mouth pressure of the first inserted valve 101a is A3, and A3=A2-A1, then
A2 > A3, according to the basic structure of inserted valve, the pressure suffered by X mouth of the first inserted valve 101a can make
First inserted valve 101a has the trend of closedown, the pressure suffered by the A mouth of the first inserted valve 101a and B mouth to make
First inserted valve 101a has the trend of unlatching, when the spool of the first inserted valve 101a is closed, now first inserts
The B mouth of dress valve 101a is also communicated with pressure oil, and this pressure oil is by the oil-out of the first repairing check valve 301a
Flowing at the X mouth of the first inserted valve 101a, now the B mouth of the first inserted valve 101a and X mouth belong to static pressure
Transmission, pressure is identical, again A2 > A3, then the X mouth of the first inserted valve 101a acts on the first inserted valve 101a
Spool on power more than the power of B mouth, make the spool of the first inserted valve 101a close, the i.e. first inserted valve 101a
B mouth to A mouth by, therefore, the effect of the first repairing check valve 301a is at the first inserted valve 101a
Under the state closed, the first inserted valve 101a is prevented to be unlocked.The action principle of the second repairing check valve 302a
Identical with the action principle of the first repairing check valve 301a.
Specifically, this electrohydraulic control system can also include: the first check valve 201a and the second check valve 202a,
The oil-in of the first check valve 201a and the A mouth connection of the first inserted valve 101a, the first check valve 201a's
The X mouth connection of oil-out and the first inserted valve 101a, the oil-in of the second check valve 202a and the second plug-in mounting
The A mouth connection of valve 102a, the oil-out of the second check valve 202a and the X mouth connection of the second inserted valve 102a.
This first check valve 201a and the second check valve 202a is for increasing the first inserted valve 101a and the second inserted valve
Pressure reduction between A mouth and the X mouth of 102a so that the first inserted valve 101a and the second inserted valve 102a is opening
Qi Shi, needs just can be unlocked by bigger pressure.
Further, after the oil-out of the first check valve 201a and the X mouth connection of the first inserted valve 101a,
Pipe again and between oil-out and the P1 mouth of two four-way electromagnetic reversing valve 4a of the first repairing check valve 301a
Road connects, after the X mouth of the oil-out of the second check valve 202a and the second inserted valve 102a connects, then with the
Pipeline connection between oil-out and the P2 mouth of two four-way electromagnetic reversing valve 4a of two repairing check valve 302a.
Beneficially simplify oil circuit by being associated with by oil circuit, reduce the volume of electrichydraulic control reversal valve 1a.
Specifically, it is provided with the 3rd between oil-out and the P mouth of electrichydraulic control reversal valve 1a of hydraulic pump 7a
Check valve 9a, the oil-in of the 3rd check valve 9a connects with the oil-out of hydraulic pump 7a, the 3rd check valve 9a
Oil-out connect with the P mouth of electrichydraulic control reversal valve 1a.3rd check valve 9a is used for preventing hydraulic oil
It is back in hydraulic pump 7a.
Following is a brief introduction of the operation principle of the electrohydraulic control system that the embodiment of the present invention provides:
Starting hydraulic pump 7a, hand-operated direction valve 6a1 and be in middle position, two position four-way solenoid valve 4a are original state,
The electric magnet of i.e. two position four-way solenoid valve 4a must not be electric so that the spool of two position four-way solenoid valve 4a is in left position,
From the P mouth of the hydraulic oil entrance electrichydraulic control reversal valve 1a that hydraulic pump 7a gets, and it is divided into two branch roads.
Wherein a branch road hydraulic oil flow is awaited orders to the A mouth of the second inserted valve 102a, and hydraulic oil is opened simultaneously
Second check valve 202a, and it flow at the X mouth of the second inserted valve 102a, due to two four-way electromagnetic reversing valves
The P2 mouth of 4a is in cut-off state so that be Hydrostatic Transfer Device between the A mouth of the second inserted valve 102a and X mouth,
The A mouth of the i.e. second inserted valve 102a is equal by the pressure of hydraulic oil, at inserted valve spool be subject at X mouth
On, the active area of the X mouth of the second inserted valve 102a is more than A mouth, adds the spring in inserted valve spool
Power effect so that the spool of the second inserted valve 102a is by downward active force so that the second inserted valve 102a
Spool can not open, hydraulic oil is cut off at the A mouth of the second inserted valve 102a, and can not with second insert
The B mouth connection of dress valve 102a.
An other branch road hydraulic oil is awaited orders at the A of the first inserted valve 101a, and small part hydraulic oil is beaten simultaneously
Open the first check valve 201a, and flow at the X mouth of the first inserted valve 101a, due to two four-way electromagnetic commutations
The P1 mouth of valve 4a connects with P3 mouth, and P3 mouth connects with fuel tank 8a1 (now at hand-operated direction valve 6a1
The T mouth of Yu Zhongwei, i.e. hand-operated direction valve 6a1 connects with fuel tank 8a1) so that the X of the first inserted valve 101a
Hydraulic oil flow at Kou, after hand-operated direction valve 6a1, flows back to fuel tank 8a1, and meanwhile, hydraulic oil is by the first plug-in mounting
The spool of valve 101a is opened, and hydraulic oil flows into the B mouth of the first inserted valve 101a, enters the first actuator
The P mouth of the hand-operated direction valve 6a1 of 901a, is passed through by the hand-operated direction valve 6a1 of the first actuator 901a
The rotation of the motor 5a1 of first actuator of commutation action control the first actuator 901a.
The hand-operated direction valve 6a1 of the first actuator operating the first actuator 901a goes back to middle position, and first holds
The motor 5a1 of first actuator of row mechanism 901a stops operating, and now, makes two four-way electromagnetic commutations
The electric magnet of valve 4a obtains electric, and the spool of two four-way electromagnetic reversing valve 4a is in right position, and two four-way electromagnetics change
Cutting off to the P1 mouth of valve 4a and P3 mouth, P2 mouth connects with P4 mouth, the A mouth of the first inserted valve 101a and
Becoming Hydrostatic Transfer Device between X mouth, the pressure of i.e. two oil ports is equal, again because hydraulic oil is at the first inserted valve 101a
X mouth at active area more than A mouth, add the effect of spring force in the first inserted valve 101a, make
The spool stress obtaining the first inserted valve 101a is downward, and spool is closed, meanwhile, by the first repairing check valve 301a
Replenisher force feed in the first inserted valve 101a spring cavity, increases the pressure at the X mouth of the first inserted valve 101a
Power, prevents the first inserted valve 101a to be opened easily, and now, the spool of the second inserted valve 102a is opened, and opens
Opening principle identical with the open theory of the first inserted valve 101a, the hydraulic oil got from hydraulic pump 7a is inserted through second
The A mouth of dress valve 102a flows into B mouth, enters first actuator of the second actuator 902a through B mouth
The P mouth of hand-operated direction valve 6a2, by the hand-operated direction valve of first actuator of the second actuator 902a
The motor 5a2 of first actuator of commutation action control the second actuator 902a of 6a2 rotates.
In the electrohydraulic control system that the embodiment of the present invention provides, electrichydraulic control reversal valve is joined by two inserted valves
Unification two four-way electromagnetic reversing valves, when two four-way electromagnetic reversing valves must not electricity time, the first inserted valve is beaten
Opening, the second inserted valve is closed, and fluid flows into the first actuator from the first inserted valve, when two four-way electromagnetics
When reversal valve obtains electric, the first inserted valve is closed, and the second inserted valve opens, and fluid flows into the from the second inserted valve
Two actuators, it is achieved thereby that the commutation of fluid；Simultaneously as these two four-way electromagnetic reversing valves have
Bigger negotiability, so this electrohydraulic control system also has bigger negotiability, the hydraulic pressure mated
The flow of pump can be 4000L/min；Additionally, coordinate two four-way electromagnetic to commutate by two inserted valves
Valve, it is achieved that the automatization of electrohydraulic control system, meanwhile, this electrohydraulic control system achieves two execution machines
Structure shares the big flow commutation function of a hydraulic pump, optimizes the quantity of power source, has saved cost.
Embodiment three
Embodiments providing another kind of electrohydraulic control system, compared with embodiment two, the present embodiment is joined
For two hydraulic pumps, three actuators and two electrichydraulic control reversal valves.
As it is shown on figure 3, when actuator is three and the respectively the 3rd actuator 903a, the 4th execution machine
During structure 904a and the 5th actuator 905a, hydraulic pump is two and the respectively first hydraulic pump 7a1 and second
Hydraulic pump 7a2, electrichydraulic control reversal valve is two and the respectively first electrichydraulic control reversal valve 1a1 and the second electricity
Hydraulic control reversal valve 1a2, the 3rd actuator 903a include that the motor 5a3 and the 3rd of the 3rd actuator holds
The hand-operated direction valve 6a3 of row mechanism, the A mouth of the hand-operated direction valve 6a3 of the 3rd actuator and the 3rd performs machine
The A mouth connection of the motor 5a3 of structure, the B mouth of the hand-operated direction valve 6a3 of the 3rd actuator and the 3rd performs
The B mouth connection of the motor 5a3 of mechanism, the T mouth of the hand-operated direction valve 6a3 of the 3rd actuator and the 3rd oil
Case 8a3 connects, the P mouth of the hand-operated direction valve 6a3 of the 3rd actuator and the first electrichydraulic control reversal valve 1a1
A1 mouth connection, the 4th actuator 904a includes motor 5a4 and the 4th execution machine of the 4th actuator
The A mouth of the hand-operated direction valve 6a4 of structure, the hand-operated direction valve 6a4 of the 4th actuator and the 4th actuator
The A mouth connection of motor 5a4, the B mouth of the hand-operated direction valve 6a4 of the 4th actuator and the 4th actuator
Motor 5a4 B mouth connection, the T mouth of the hand-operated direction valve 6a4 of the 4th actuator and the 4th fuel tank 8a4
Connection, the P mouth of the hand-operated direction valve 6a4 of the 4th actuator respectively with the first electrichydraulic control reversal valve 1a1
B1 mouth and the second electrichydraulic control reversal valve 1a2 A2 mouth connection, the 5th actuator 905a includes the 5th
The motor 5a5 and the hand-operated direction valve 6a5 of the 5th actuator of actuator, manually changing of the 5th actuator
Connect with the A mouth of motor 5a5 to the A mouth of valve 6a5, the B of the hand-operated direction valve 6a5 of the 5th actuator
Mouth connects with the B mouth of the motor 5a5 of the 5th actuator, the T of the hand-operated direction valve 6a5 of the 5th actuator
Mouth connects with the 5th fuel tank 8a5, the P mouth of the hand-operated direction valve 6a5 of the 5th actuator and the second electro-hydraulic control
The B2 mouth connection of reversal valve 1a2 processed, the oil-out of the first hydraulic pump 7a1 and the second hydraulic pump 7a2's is fuel-displaced
Mouth respectively with P1 mouth and the P2 mouth of the second electrichydraulic control reversal valve 1a2 of the first electrichydraulic control reversal valve 1a1
Connection.
Specifically, this electrohydraulic control system can also include two the 3rd check valve 9a1, two the 3rd check valves
The oil-in of 9a1 connects with the oil-out of the first hydraulic pump 7a1 and the oil-out of the second hydraulic pump 7a2 respectively,
The oil-out of two the 3rd check valve 9a1 is electric with the P mouth of the first electrichydraulic control reversal valve 1a1 and second respectively
The P mouth connection of hydraulic control reversal valve 1a2.3rd check valve 9a1 is used for preventing hydraulic oil to be back to first
In hydraulic pump 7a1 and the second hydraulic pump 7a2.
Following is a brief introduction of the operation principle of the electrohydraulic control system that the embodiment of the present invention provides:
Start the first hydraulic pump 7a1 and the second hydraulic pump 7a2, respectively by the first electrichydraulic control reversal valve 1a1
With electric magnet DT1, DT2 of the second electrichydraulic control reversal valve 1a2 whether electric, thus control three execution
Mechanism works, and three actuators can work the most two-by-two, is specifically shown in following table:
The duty table of the electrohydraulic control system that table 1 provides for the embodiment of the present invention
In table ,+representing electric, expression must not electricity.
Following is a brief introduction of the operation principle of three kinds of operating modes:
Operating mode one: electric magnet DT1 and electric magnet DT2 all must not be electric, now, the first electrichydraulic control reversal valve
The P1 mouth of 1a1 connects with A1 mouth, and P1 mouth does not connects with B1 mouth；Second electrichydraulic control reversal valve 1a2's
P2 mouth connects with A2 mouth, and P2 mouth does not connects with B2 mouth, and P1 mouth and P2 mouth control the 3rd actuator respectively
903a and the 4th actuator 904a work.
Operating mode two: electric magnet DT1 must not be electric, and electric magnet DT2 obtains electric, now, P1 mouth is with A1 mouth even
Logical, P1 mouth does not connects with B1 mouth；P2 mouth connects with B2 mouth, and P2 mouth does not connects with A2 mouth, P1 mouth and
P2 mouth controls the 3rd actuator 903a and the 5th actuator 905a work respectively.
Operating mode three: electric magnet DT1 and electric magnet DT2 all electric, now, P1 mouth connects with B1 mouth, P1
Mouth does not connects with A1 mouth；P2 mouth connects with B2 mouth, and P2 mouth does not circulates to A2 mouth, P1 mouth and P2 mouth
Control the 4th actuator 904a and the 5th actuator 905a work respectively.
It should be noted that above-described embodiment only lists the situation including three actuators, this situation is only
One of which embodiment for the present invention, it is readily appreciated that, the number of the actuator in the present invention can also be
More than three, and be arranged according to the connected mode in embodiment three, i.e. every many interpolations one perform structure,
The P mouth of this execution structure can connect with the P mouth of previous execution structure, it is achieved sharing or mutual of hydraulic pump
For standby.
In the electrohydraulic control system that the embodiment of the present invention provides, changed by two hydraulic pumps and two electrichydraulic control
To valve control three perform structures, when first, second two four-way electromagnetic reversing valves all must not electricity time, P1 mouth
Connecting with A1 mouth, P2 mouth connects with A2 mouth, the 3rd actuator and the 4th actuator work；When first
Two four-way electromagnetic reversing valves must not electricity, when the second two four-way electromagnetic reversing valves obtain electric, P1 mouth and A1 mouth
Connection,；P2 mouth connects with B2 mouth, the 3rd actuator and the 5th actuator work；When first, second
Two four-way electromagnetic reversing valves all electric time, P1 mouth connects with B1 mouth, and P2 mouth connects with B2 mouth, the 4th
Actuator and the 5th actuator work, thus by two hydraulic pumps and two electrichydraulic control reversal valve controls
Make three and perform structure commutation, simultaneously as these two four-way electromagnetic reversing valves have bigger negotiability,
So this electrohydraulic control system also has bigger negotiability, the flow of the hydraulic pump mated can be
4000L/min；Additionally, coordinate two four-way electromagnetic reversing valves by two inserted valves, it is achieved that electro-hydraulic
The automatization of control system, meanwhile, this electrohydraulic control system achieves three actuators and shares two hydraulic pressure
The big flow commutation function of pump, optimizes the quantity of power source, has saved cost.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (10)
1. an electrichydraulic control reversal valve, it is characterised in that described electrichydraulic control reversal valve includes: first inserts
Dress valve (101), the second inserted valve (102) and two four-way electromagnetic reversing valves (4), described first inserted valve
(101) A mouth connects with the A mouth of described second inserted valve (102), described first inserted valve (101)
X mouth connect with the P1 mouth of described two four-way electromagnetic reversing valves (4), described second inserted valve (102)
X mouth connect with the P2 mouth of described two four-way electromagnetic reversing valves (4), described two four-way electromagnetics commutation
The P3 mouth of valve (4) connects with B mouth and the first actuator three of described first inserted valve (101), institute
The B mouth and second of the P4 mouth and described second inserted valve (102) of stating two four-way electromagnetic reversing valves (4) is held
Row mechanism three connects.
Electrichydraulic control reversal valve the most according to claim 1, it is characterised in that described electrichydraulic control is changed
Including the first repairing check valve (301) and the second repairing check valve (302) to valve, described first repairing is unidirectional
The oil-in of valve (301) connects with the B mouth of described first inserted valve (101), and described first repairing is unidirectional
The oil-out of valve (301) connects with the X mouth of described first inserted valve (101), and described second repairing is unidirectional
The oil-in of valve (302) connects with the B mouth of described second inserted valve (102), and described second repairing is unidirectional
The oil-out of valve (302) connects with the X mouth of described second inserted valve (102).
Electrichydraulic control reversal valve the most according to claim 2, it is characterised in that described electrichydraulic control is changed
Also include to valve: the first check valve (201) and the second check valve (202), described first check valve (201)
Oil-in connect with the A mouth of described first inserted valve (101), going out of described first check valve (201)
Hydraulic fluid port connects with the X mouth of described first inserted valve (101), the oil-in of described second check valve (202)
Connect with the A mouth of described second inserted valve (102), the oil-out of described second check valve (202) and institute
State the X mouth connection of the second inserted valve (102).
Electrichydraulic control reversal valve the most according to claim 3, it is characterised in that described first check valve
(201) after oil-out connects with the X mouth of described first inserted valve (101), then with described first repairing
Pipeline between oil-out and the P1 mouth of described two four-way electromagnetic reversing valves (4) of check valve (301) is even
Logical, after the oil-out of described second check valve (202) connects with the X mouth of described second inserted valve (102),
Again with the oil-out of described second repairing check valve (302) and described two four-way electromagnetic reversing valves (4)
Pipeline connection between P2 mouth.
Electrichydraulic control reversal valve the most according to claim 1, it is characterised in that described electrichydraulic control is changed
Also include the 3rd check valve (9) to valve, the oil-out of described 3rd check valve (9) is inserted with described first respectively
The A mouth of dress valve (101), the X mouth of described first inserted valve (101), described second inserted valve (102)
A mouth and the X mouth of described first inserted valve (101) be interconnected.
6. an electrohydraulic control system, it is characterised in that described system includes: electrichydraulic control reversal valve (1a),
Hydraulic pump (7a) and at least two actuator, the oil-out of described hydraulic pump (7a) and described electrichydraulic control
The P mouth connection of reversal valve (1a)；
Described electrichydraulic control reversal valve (1a) including: the first inserted valve (101a), the second inserted valve (102a)
With two four-way electromagnetic reversing valves (4a), the A mouth of described first inserted valve (101a) and described second plug-in mounting
The A mouth of valve (102a) connects and connects the P mouth described electrichydraulic control reversal valve (1a), and described first
The X mouth of inserted valve (101a) connects with the P1 mouth of described two four-way electromagnetic reversing valves (4a), and described
The X mouth of two inserted valves (102a) connects with the P2 mouth of described two four-way electromagnetic reversing valves (4a), described
The P3 mouth of two four-way electromagnetic reversing valves (4a) connects with the B mouth of described first inserted valve (101a) and connects
Lead to the A mouth described electrichydraulic control reversal valve (1a), the P4 of described two four-way electromagnetic reversing valves (4a)
Mouth connects and connects with the B mouth of described second inserted valve (102a) described electrichydraulic control reversal valve (1a)
B mouth；
When described actuator is two and the respectively first actuator (901a) and the second actuator
(902a), time, described first actuator (901a) includes the motor (5a1) and of the first actuator
The hand-operated direction valve (6a1) of one actuator, the A of the hand-operated direction valve (6a1) of described first actuator
Mouth connects with the A mouth of the motor (5a1) of described first actuator, manually changing of described first actuator
B mouth to the B mouth of valve (6a1) with the motor (5a1) of described first actuator connects, and described first
The T mouth of the hand-operated direction valve (6a1) of actuator and the first fuel tank (8a1) connection, described first performs
The P mouth of the hand-operated direction valve (6a1) of mechanism connects with the A mouth of described electrichydraulic control reversal valve (1a), institute
State the second actuator (902a) and include motor (5a2) and the hands of the second actuator of the second actuator
Dynamic reversal valve (6a2), the A mouth of the hand-operated direction valve (6a2) of described second actuator is held with described second
The A mouth connection of the motor (5a2) of row mechanism, the B of the hand-operated direction valve (6a2) of described second actuator
Mouth connects with the B mouth of the motor (5a2) of described second actuator, manually changing of described second actuator
To T mouth and the second fuel tank (8a2) connection, the hand-operated direction valve of described second actuator of valve (6a2)
(6a2) P mouth connects with the B mouth of described electrichydraulic control reversal valve (1a)；
When described actuator is three and the respectively the 3rd actuator (903a), the 4th actuator (904a)
During with the 5th actuator (905a), described hydraulic pump be two and the respectively first hydraulic pump (7a1) and
Second hydraulic pump (7a2), described electrichydraulic control reversal valve is two and the respectively first electrichydraulic control reversal valve
(1a1) He the second electrichydraulic control reversal valve (1a2), described 3rd actuator (903a) includes that the 3rd holds
The motor (5a3) of row mechanism and the hand-operated direction valve (6a3) of the 3rd actuator, described 3rd actuator
The A mouth of hand-operated direction valve (6a3) connect with the A mouth of the motor (5a3) of described 3rd actuator,
The B mouth of the hand-operated direction valve (6a3) of described 3rd actuator connects with the B mouth of described motor (5a3),
The T mouth of the hand-operated direction valve (6a3) of described 3rd actuator and the connection of the 3rd fuel tank (8a3), described
The P mouth of the hand-operated direction valve (6a3) of the 3rd actuator and described first electrichydraulic control reversal valve (1a1)
A1 mouth connection, described 4th actuator (904a) include the 4th actuator motor (5a4) and
The hand-operated direction valve (6a4) of the 4th actuator, the hand-operated direction valve (6a4) of described 4th actuator
A mouth connects with the A mouth of the motor (5a4) of described 4th actuator, described 4th actuator manual
The B mouth of reversal valve (6a4) connects with the B mouth of the motor (5a4) of described 4th actuator, and described
The T mouth of the hand-operated direction valve (6a4) of four actuators and the connection of the 4th fuel tank (8a4), the described 4th holds
The P mouth of the hand-operated direction valve (6a4) of row mechanism respectively with described first electrichydraulic control reversal valve (1a1)
B1 mouth connects with the A2 mouth of described second electrichydraulic control reversal valve (1a2), described 5th actuator (905a)
Including motor (5a5) and the hand-operated direction valve (6a5) of the 5th actuator of the 5th actuator, described
The A mouth of the hand-operated direction valve (6a5) of five actuators and the motor (5a5) of described 5th actuator
A mouth connects, the B mouth of the hand-operated direction valve (6a5) of described 5th actuator and described 5th actuator
Motor (5a5) B mouth connection, the T mouth of the hand-operated direction valve (6a5) of described 5th actuator and
5th fuel tank (8a5) connection, the P mouth of the hand-operated direction valve (6a5) of described 5th actuator is with described
Second electrichydraulic control reversal valve (1a2) B2 mouth connection, the oil-out of described first hydraulic pump (7a1) and
The oil-out of described second hydraulic pump (7a2) respectively with the P1 of described first electrichydraulic control reversal valve (1a1)
Mouth connects with the P2 mouth of described second electrichydraulic control reversal valve (1a2).
Electrohydraulic control system the most according to claim 6, it is characterised in that described electrohydraulic control system
Including the first repairing check valve (301a) and the second repairing check valve (302a), described first repairing check valve
(301a) oil-in connects with the B mouth of described first inserted valve (101a), and described first repairing is unidirectional
The oil-out of valve (301a) connects with the X mouth of described first inserted valve (101a), described second repairing list
B mouth to the oil-in of valve (302a) with described second inserted valve (102a) connects, described second repairing
The oil-out of check valve (302a) connects with the X mouth of described second inserted valve (102a).
Electrohydraulic control system the most according to claim 7, it is characterised in that described electrohydraulic control system
Also include: the first check valve (201a) and the second check valve (202a), described first check valve (201a)
Oil-in connect with the A mouth of described first inserted valve (101a), described first check valve (201a)
Oil-out connects with the X mouth of described first inserted valve (101a), and described second check valve (202a) enters
Hydraulic fluid port connects with the A mouth of described second inserted valve (102a), described second check valve (202a) fuel-displaced
Mouth connects with the X mouth of described second inserted valve (102a).
Electrohydraulic control system the most according to claim 8, it is characterised in that described first check valve
(201a) after oil-out connects with the X mouth of described first inserted valve (101a), then mend with described first
Pipe between oil-out and the P1 mouth of described two four-way electromagnetic reversing valves (4a) of oil check valve (301a)
Road connects, the oil-out of described second check valve (202a) and the X mouth of described second inserted valve (102a)
After connection, then commutate with the oil-out of described second repairing check valve (302a) and described two four-way electromagnetics
Pipeline connection between the P2 mouth of valve (4a).
Electrohydraulic control system the most according to claim 6, it is characterised in that described hydraulic pump (7a)
Oil-out and the P mouth of described electrichydraulic control reversal valve (1a) between be provided with the 3rd check valve (9a), institute
The oil-out of the oil-in and described hydraulic pump (7a) of stating the 3rd check valve (9a) connects, described 3rd unidirectional
The oil-out of valve (9a) connects with the P mouth of described electrichydraulic control reversal valve (1a).
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| CN201410423870.XA CN104214157B (en) | 2014-08-26 | 2014-08-26 | A kind of electrichydraulic control reversal valve and electrohydraulic control system |
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| CN104214157B true CN104214157B (en) | 2016-08-31 |
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| US6672399B2 (en) * | 2001-10-19 | 2004-01-06 | Deere & Company | Hydraulic diverting system for utility vehicle |
| CN101608644A (en) * | 2009-03-06 | 2009-12-23 | 上海人豪液压技术有限公司 | Combination hydraulic integrated control valve block system |
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| CN103821784A (en) * | 2012-11-19 | 2014-05-28 | 西安志越机电科技有限公司 | Single-pump and double-motor open type hydraulic system for travelling mechanism of land leveler |
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| JP3202361B2 (en) * | 1992-10-29 | 2001-08-27 | 三菱重工業株式会社 | Brake device for injection molding machine |
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|---|---|---|---|---|
| US6672399B2 (en) * | 2001-10-19 | 2004-01-06 | Deere & Company | Hydraulic diverting system for utility vehicle |
| CN101608644A (en) * | 2009-03-06 | 2009-12-23 | 上海人豪液压技术有限公司 | Combination hydraulic integrated control valve block system |
| CN101865168A (en) * | 2010-06-22 | 2010-10-20 | 三一重工股份有限公司 | Hydraulic system and engineering machine with same |
| CN102829011A (en) * | 2012-08-21 | 2012-12-19 | 中传重型装备有限公司 | Double-pump confluence hydraulic loop combined valve and application thereof |
| CN103821784A (en) * | 2012-11-19 | 2014-05-28 | 西安志越机电科技有限公司 | Single-pump and double-motor open type hydraulic system for travelling mechanism of land leveler |
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