CN108252979A - Hydraulic control valve and hydraulic system - Google Patents
Hydraulic control valve and hydraulic system Download PDFInfo
- Publication number
- CN108252979A CN108252979A CN201810224783.XA CN201810224783A CN108252979A CN 108252979 A CN108252979 A CN 108252979A CN 201810224783 A CN201810224783 A CN 201810224783A CN 108252979 A CN108252979 A CN 108252979A
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- Prior art keywords
- hydraulic fluid
- fluid port
- control valve
- hydraulic
- valve
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- 239000012530 fluid Substances 0.000 claims abstract description 233
- 238000004891 communication Methods 0.000 claims abstract description 9
- 230000008929 regeneration Effects 0.000 claims description 45
- 238000011069 regeneration method Methods 0.000 claims description 45
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000002828 fuel tank Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 69
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B2013/002—Modular valves, i.e. consisting of an assembly of interchangeable components
Abstract
The invention discloses a kind of hydraulic control valve and hydraulic systems.Hydraulic control valve joins including work.Work connection is with oil inlet, oil discharge outlet, the first actuator port and the second actuator port and including main control valve, including the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port and the 4th hydraulic fluid port.First hydraulic fluid port is connect with oil inlet, and the second hydraulic fluid port is connect with oil discharge outlet, and third hydraulic fluid port is connect with the first actuator port, and the 4th hydraulic fluid port is connect with the second actuator port.Main control valve has the first operating position and the second operating position, and in the first operating position, main control valve controls the first hydraulic fluid port to be in fluid communication with third hydraulic fluid port and the fluid of the 4th hydraulic fluid port is controlled to flow to third hydraulic fluid port；In the second operating position, main control valve controls the first hydraulic fluid port and the 4th hydraulic fluid port to be in fluid communication.The oil return of second actuator port of the hydraulic control valve of the present invention is flowed directly back at the first actuator port, is regenerated so as to fulfill flow, and compared with being returned directly to fuel tank in the prior art, energy consumption is relatively low.
Description
Technical field
The present invention relates to technical field of engineering machinery, more particularly to a kind of hydraulic control valve and hydraulic system.
Background technology
Multi-way valve, which is located at, to be the core element of construction machinery hydraulic system between source element and executive component.Multi-way valve
Including the auxiliary valves such as oil inlet connection, tail connection, multiple work connection, multiple safety overflow valves and check valve, compact-sized, good manufacturability
And combination is flexible, is widely used in mechanically moving.
Flow shares multi-way valve and is applied to include multiple executing agencies and has the engineering machinery of composite move, with band valve for pressure difference
Plunger piston variable hydraulic pump form flow sharing hydraulic system.Maximum load pressure signal acts on hydraulic pump valve for pressure difference, pressure difference
The pressure-flow demand of valve impression system simultaneously provides adjustable flow when system condition changes according to flow demand.It is existing
Flow shares multi-way valve, frequently with Hydraulic guide control, proportion electro-magnet electrichydraulic control or control commutation manually, the stroke of spool
Proportional variation is with the flow of accuracy-control system.Also with compensator balanced load pressure, make all spools inlet and outlet pressures
Difference is equal, but work is associated in commutation process, and load pressure is also easy to produce impact.And since many executing agencies are to multi-way valve
Position leakage requires very strict in work connection working hole, and it is difficult to be finished so as to cause valve opening.In addition, existing flow is total to
Enjoying multi-way valve work connection does not have flow regeneration function, and energy consumption is larger.
Invention content
The purpose of the present invention is to provide a kind of hydraulic control valve and hydraulic system, to reduce energy consumption.
First aspect present invention provides a kind of hydraulic control valve, joins including work, work connection with oil inlet, oil discharge outlet,
First actuator port and the second actuator port and including：
Main control valve, including the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port and the 4th hydraulic fluid port, the first hydraulic fluid port connects with oil inlet
It connects, the second hydraulic fluid port is connect with oil discharge outlet, and third hydraulic fluid port is connect with the first actuator port, and the 4th hydraulic fluid port and the second actuator port connect
It connects；
Main control valve has the first operating position and the second operating position, in the first operating position, main control valve control the
One hydraulic fluid port is in fluid communication with third hydraulic fluid port and the fluid of the 4th hydraulic fluid port is controlled to flow to third hydraulic fluid port；In the second operating position, master control
Valve processed controls the first hydraulic fluid port and the 4th hydraulic fluid port to be in fluid communication.
In some embodiments, main control valve includes being set to check valve between third hydraulic fluid port and the 4th hydraulic fluid port, the
One operating position, check valve control fluid flow to third hydraulic fluid port from the 4th hydraulic fluid port.
In some embodiments, hydraulic control valve includes valve body, main valve plug and the first regeneration spool and the second regeneration valve
Core, main valve plug have axis hole, and the first regeneration spool is set to the first end of axis hole, and the second regeneration spool is set to the second of axis hole
End, the first regeneration spool and the second regeneration spool form check valve relative to axis hole, in the first operating position, the first regeneration spool
It is opened with the second regeneration spool, the fluid of the 4th hydraulic fluid port is flowed to by the first regeneration spool, axis hole and the second regeneration spool
Third hydraulic fluid port.
In some embodiments, hydraulic control valve further includes the first plug of the first end for being set to axis hole, and first is stifled
Head is used to limit the position of the first regeneration spool；And/or hydraulic control valve further includes the second of the second end for being set to axis hole and blocks up
Head, the second plug are used to limit the position of the second regeneration spool.
In some embodiments, hydraulic control valve further includes the bullet being set between the first plug and the first regeneration spool
Spring；And/or hydraulic control valve further includes the spring being set between the second plug and the second regeneration spool.
In some embodiments, the diameter of the end of main valve plug is less than the diameter in the middle part of it.
In some embodiments, main control valve also has third operating position, at third operating position, the first hydraulic fluid port,
Second hydraulic fluid port, third hydraulic fluid port and the 4th hydraulic fluid port are turned off, and work connection, which further includes, is set to the second actuator port and the 4th hydraulic fluid port
Between holding valve, when main control valve is in third operating position, keep valve control the second actuator port and the 4th hydraulic fluid port it
Between oil circuit disconnect.
In some embodiments, valve is kept to include the first hydraulic fluid port and the second hydraulic fluid port, keeps the first hydraulic fluid port and the main control of valve
The 4th hydraulic fluid port connection of valve, keeps the second hydraulic fluid port of valve to be connected with the second actuator port, valve is kept to control its first hydraulic fluid port and its
Break-make between second hydraulic fluid port.
In some embodiments, work connection further includes the overload repairing being set between the second actuator port and oil discharge outlet
Valve.
In some embodiments, overload oil compensating valve includes overflow valve and the check valve being arranged in parallel with overflow valve, check valve
Oil inlet connect with oil discharge outlet, the oil outlet of check valve is connect with the second actuator port.
In some embodiments, work connection further includes pressure compensator, and main control valve further includes the 5th hydraulic fluid port and the 6th oil
Mouthful, the 5th hydraulic fluid port is connected with the first hydraulic fluid port, and the 6th hydraulic fluid port is selectively connected with third hydraulic fluid port or the 4th hydraulic fluid port, pressure compensator
It is set between the 5th hydraulic fluid port and the 6th hydraulic fluid port to control the pressure difference between the first hydraulic fluid port of main control valve and the 6th hydraulic fluid port to set
Definite value.
In some embodiments, work connection, which further includes, is set between the 6th hydraulic fluid port of pressure compensator and main control valve
Check valve, the oil inlet of check valve are connect with pressure compensator, and the oil outlet of check valve and the 6th hydraulic fluid port of main control valve connect.
In some embodiments, hydraulic control valve is multi-way valve, and multi-way valve includes at least two work and joins.
Second aspect of the present invention provides a kind of hydraulic system, the hydraulic pressure control provided including such as any one of first aspect present invention
Valve processed.
Based on technical solution provided by the invention, hydraulic control valve joins including work.Work connection is with oil inlet, oil extraction
Mouthful, the first actuator port and the second actuator port and including main control valve, including the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port and
4th hydraulic fluid port.First hydraulic fluid port is connect with oil inlet, and the second hydraulic fluid port is connect with oil discharge outlet, and third hydraulic fluid port and the first actuator port connect
It connects, the 4th hydraulic fluid port is connect with the second actuator port.Main control valve has the first operating position and the second operating position, in the first work
Make position, main control valve controls the first hydraulic fluid port to be in fluid communication with third hydraulic fluid port and the fluid of the 4th hydraulic fluid port is controlled to flow to third oil
Mouthful；In the second operating position, main control valve controls the first hydraulic fluid port and the 4th hydraulic fluid port to be in fluid communication.The hydraulic control valve of the present invention exists
During in the first operating position, that is the first hydraulic fluid port connects the first actuator port oil inlet at this time with third hydraulic fluid port, and second
Actuator port oil return, main control valve control the fluid of the 4th hydraulic fluid port to flow to third hydraulic fluid port, that is to say, that the second actuator port of control
Oil return flow directly back at the first actuator port, so as to fulfill flow regenerate, compared with being returned directly to fuel tank in the prior art,
It consumes energy relatively low.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the theory structure schematic diagram of the hydraulic control valve of the embodiment of the present invention；
Fig. 2 is the cross section structure schematic diagram of the hydraulic control valve of the embodiment of the present invention；
Fig. 3 is the overlooking the structure diagram of hydraulic control valve shown in Fig. 2；
Fig. 4 is the structure diagram of the B-B direction in Fig. 3；
Fig. 5 and Fig. 6 is respectively the front view and sectional view of main valve plug.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the present invention and its application or makes
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, the component and positioned opposite, the digital table of step otherwise illustrated in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to be drawn according to practical proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely illustrative, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms are represented in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need to that it is further discussed in figure.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made in opposite description to space used herein above.
The hydraulic control valve of the embodiment of the present invention joins including work.Work connection is with oil inlet P, oil discharge outlet T, the first work
Hydraulic fluid port A and the second actuator port B and including：
Main control valve 1, including the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port and the 4th hydraulic fluid port, the first hydraulic fluid port and oil inlet P
Connection, the second hydraulic fluid port are connect with oil discharge outlet T, and third hydraulic fluid port is connect with the first actuator port A, the 4th hydraulic fluid port and the second actuator port
B connections；
Main control valve 1 has the first operating position (upper in Fig. 1) and the second operating position (bottom in Fig. 1),
First operating position, main control valve 1 control the first hydraulic fluid port to be in fluid communication with third hydraulic fluid port and the fluid of the 4th hydraulic fluid port are controlled to flow to
Third hydraulic fluid port；In the second operating position, main control valve controls the first hydraulic fluid port and the 4th hydraulic fluid port to be in fluid communication.
For the hydraulic control valve when in the first operating position, the first hydraulic fluid port connects that is at this time with third hydraulic fluid port
One actuator port oil inlet, and the second actuator port oil return, main control valve 1 control the fluid of the 4th hydraulic fluid port to flow to third hydraulic fluid port,
That is the oil return of the second actuator port of control is flowed directly back at the first actuator port, regenerated so as to fulfill flow, it is and existing
It is returned directly to fuel tank in technology to compare, energy consumption is relatively low.
As shown in Figure 1, the main control valve of the present embodiment includes the check valve being set between third hydraulic fluid port and the 4th hydraulic fluid port.
In the first operating position, check valve control fluid flows to third hydraulic fluid port from the 4th hydraulic fluid port.
Specifically in the present embodiment, as shown in Fig. 2, Fig. 5 and Fig. 6, hydraulic control valve include valve body 11, main valve plug 12 with
And first regeneration spool 13 and second regenerate spool 19.Main valve plug 12 has axis hole 12c.First regeneration spool 13 is set to axis hole
The first end of 12c, the second regeneration spool 19 are set to the second end of axis hole 12c.First regeneration spool 13 and second regenerates spool
19 form check valve relative to axis hole 12c.In the first operating position, the first regeneration spool 13 and second regenerates spool 19 and opens
It opens, the fluid of the 4th hydraulic fluid port flows to third hydraulic fluid port by the first regeneration spool 13, axis hole and the second regeneration spool 19.
Hydraulic control valve further includes the first plug 27 of the first end for being set to axis hole, and the first plug is used to limit first
Regenerate the position of spool 13.Wherein, the first plug 27 is connect by screw thread with main valve plug 12.
Preferably, the hydraulic control valve of the present embodiment, which further includes, is set between the first plug 27 and the first regeneration spool 13
Spring 28.Spring 28 plays buffering and reset response.
Similarly, hydraulic control valve further includes the second plug of the second end for being set to axis hole, and the second plug is used to limit
The position of second regeneration spool 19.Hydraulic control valve further includes the spring being set between the second plug and the second regeneration spool.
The diameter at the both ends of main valve plug 12 is less than the diameter at middle part.Such setting can make up the first plug and the second plug
Dilatancy after tightening avoids the clamping stagnation of main valve plug.Specifically, it is next that the mode that incision is ground may be used in the both ends of main valve plug 12
Processing.
As shown in Figure 1, main control valve 1 also has third operating position (the middle position in Fig. 1).At third operating position,
First hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port and the 4th hydraulic fluid port are turned off, and work connection, which further includes, is set to the second actuator port B
With the holding valve 3 between the 4th hydraulic fluid port, when main control valve 1 is in third operating position, valve 3 is kept to control the second actuator port
Oil circuit between the 4th hydraulic fluid port disconnects.
Valve 3 is kept to include the first hydraulic fluid port 3a and the second hydraulic fluid port 3b, keeps the first hydraulic fluid port 3a and the 4th of main control valve 1 of valve
Hydraulic fluid port connect, the second hydraulic fluid port 3b of valve is kept connect with the second actuator port, keep valve 3 control its first hydraulic fluid port 3a and its second
Break-make between hydraulic fluid port 3b.When main control valve is in middle position, valve 3 is kept to be off the hydraulic pressure so as to avoid working chamber
Oil is revealed by the fit clearance between main valve plug 12 and the valve opening 110 of valve body 11, so as to prevent falling suddenly for executing agency
It falls.Further, the fit precision between the valve opening 110 to main valve plug and valve body is reduced, so as to reduce difficulty of processing.
Specifically, valve 3 is kept to include the holding spool 31 with the conical hole cooperation on valve body 11.Spool 31 is kept to include ball
Face.Zero leakage is realized substantially with being combined into linear sealing between spherical surface and conical hole.
Preferably, work connection further includes the overload oil compensating valve 4 being set between the second actuator port B and oil discharge outlet T.Overload
Fill valve 4 plays the role of protecting executing agency.
Overload oil compensating valve 4 includes overflow valve and the check valve being arranged in parallel with overflow valve, the oil inlet of check valve and oil extraction
Mouth connection, the oil outlet of check valve are connect with the second actuator port.The setting of check valve can prevent executing agency to be emptied, and raising is held
Row agency security simultaneously reduces noise.
Work connection further includes pressure compensator 2.Main control valve 1 further includes the 5th hydraulic fluid port and the 6th hydraulic fluid port, the 5th hydraulic fluid port with
First hydraulic fluid port connects, and the 6th hydraulic fluid port is selectively connected with third hydraulic fluid port or the 4th hydraulic fluid port, and pressure compensator is set to the 5th oil
To control the pressure difference between the first hydraulic fluid port of main control valve and the 6th hydraulic fluid port as setting value between mouth and the 6th hydraulic fluid port.
Specifically, pressure compensator 2 includes pressure-compensated valve 21 and is set between pressure-compensated valve 21 and Lc channels
Check valve 22.
Work connection further includes the check valve 9 being set between pressure compensator 2 and the 6th hydraulic fluid port of main control valve 1, unidirectionally
The oil inlet of valve 9 is connect with pressure compensator 2, and the oil outlet of check valve 9 and the 6th hydraulic fluid port of main control valve connect.
In at least one embodiment, hydraulic control valve is multi-way valve.Multi-way valve includes at least two work and joins.
The structure of the hydraulic control valve of the specific embodiment of the invention is described in detail below according to Fig. 1 to Fig. 6.
Shown as shown in Figure 1, Figure 3 and Figure 4, the work connection of the hydraulic control valve of the present embodiment includes main control valve 1, pressure compensation
Device 2 and holding valve 3.Work connection has oil inlet P, oil discharge outlet T, the first actuator port A and the second actuator port B.
Main control valve 1 has the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the 4th hydraulic fluid port, the 5th hydraulic fluid port, the 6th hydraulic fluid port, the
Seven hydraulic fluid ports and drain tap.First hydraulic fluid port is connect with oil inlet P, and the second hydraulic fluid port is connect with oil discharge outlet T, third hydraulic fluid port and the first work
Hydraulic fluid port A connections, the 4th hydraulic fluid port are connect with the second actuator port B.5th hydraulic fluid port passes through pressure compensator 2 and check valve 9 and
Six hydraulic fluid ports connect.7th hydraulic fluid port is with keeping the control terminal of valve 3 to connect.Drain tap is connect with oil discharge outlet T.
There are three operating positions for the tool of main control valve 1, and when in bottom, the 7th hydraulic fluid port and drain tap are turned off, the first oil
Mouth is connected with the 5th hydraulic fluid port, and the 6th hydraulic fluid port connects hydraulic oil being delivered to the second actuator port B, third oil with the 4th hydraulic fluid port
Mouth connects that the oil return of the first actuator port A is made to be circulated to oil discharge outlet T with the second hydraulic fluid port；When in middle position, the 6th hydraulic fluid port
It is connected with drain tap and remaining hydraulic fluid port is turned off.At this point, keep valve 3 that there is off-state to prevent the oil of the second actuator port B
Liquid leaks and executive component is caused to fall；In it is upper when, the first hydraulic fluid port is connected with the 5th hydraulic fluid port, the 6th hydraulic fluid port and third oil
Mouthful connection so as to which hydraulic oil is delivered to the first actuator port A, be provided between third hydraulic fluid port and the 4th hydraulic fluid port check valve so as to
The oil return of the 4th hydraulic fluid port is made to be circulated to the flow regeneration that third hydraulic fluid port realizes oil return.
The first hydraulic fluid port 3a of valve 3 and the 4th hydraulic fluid port of main control valve is kept to connect, keeps the second hydraulic fluid port 3b and second of valve 3
Actuator port B connections.The first control terminal of valve 3 is kept to be all connected with its first hydraulic fluid port 3a and its second hydraulic fluid port 3b.Keep valve 3
The second control terminal connect with its second hydraulic fluid port 3b by restricting element and be provided with spring.
As shown in Figure 1, pressure compensator 2 includes pressure-compensated valve 21 and check valve 22.When main control valve 1 be in it is upper or
When the next, the hydraulic oil of oil inlet P flows to pressure-compensated valve 21 by the throttle structure of main control valve 1, passes through pressure-compensated valve
21 hydraulic pressure oil overhold opening one-way valve 3 flows to executive component, and at the same time the flow direction load of check valve 22 in open-top pressure compensator 2
Control oil circuit Lc channels, that is to say, that the load pressure of executive component is input in load control oil circuit Lc channels.It loads quick
Feel oil circuit Ls channels pressure by damping feed back in the control terminal of pressure-compensated valve 21, so as to make pressure-compensated valve 21 into
Mouth pressure is consistent with the feedback pressure of load-sensitive oil circuit Ls, ensures that the inlet outlet pressure differential of main control valve is consistent, and then realizes negative
Carry sensitive function.
Work connection further includes the plug 5 being set between the first actuator port A and oil discharge outlet T and is set to the second work
Overload oil compensating valve 4 between hydraulic fluid port B and oil discharge outlet.Overload oil compensating valve 4 includes overflow valve and is arranged in parallel with overflow valve unidirectional
Valve.Overflow valve is used to prevent the oil pressure of the second actuator port B is excessive from playing a protective role.
As shown in Fig. 2, the hydraulic control valve of the present embodiment includes valve body 11 and main valve plug 12.Wherein, the knot of main valve plug 12
Structure is as shown in Figure 5 and Figure 6.The main control valve of the present embodiment further includes the first regeneration spool 13 and the being set in main valve plug 12
Two regeneration spools 19.First regeneration spool 13 and second regenerates spool 19 and moves realization relative to valve body 11 under the action of oil pressure
The effect of check valve, so as to which the oil return for making the second actuator port is flowed directly back at the first actuator port, so as to fulfill flow again
It is raw.
It is as follows to implement the regenerated process of flow：As depicted in figs. 1 and 2, when guide oil chamber a oil inlets, main valve plug 12
It moves right under the promotion of oil liquid pressure, at this point, P chambers are connected by main valve plug 12 with Pc chambers, then passes through compensating spool 211
First neck, check valve 9 are connected with bridge type return, and bridge type return is connected by main valve plug 12 with A chambers.B chambers are by keeping spool
31 connect with C chambers.First regeneration spool 13 moves right under the pressure effect of fluid and compressed spring is thus by main valve plug 12
On throttle orifice open.The fluid of C chambers is flowed to by first through hole 12b and throttle orifice in axis hole 12c.Second regeneration spool 19
Compressed spring is so as to open another throttle orifice on main valve plug 12 under the pressure effect of fluid, so that axis hole 12c passes through
Second through-hole 12a is connected with A chambers to be regenerated so as to fulfill flow.
The both ends of main valve plug 12 are respectively arranged with the first pilot control chamber a and the second pilot control chamber b.Second pilot control
Chamber b by end cap 16, spring 15, spring base 14, gag lever post 16 and regulating device 17 and valve body 11 end face and main valve plug 12
It is collectively formed.End cap 16 is fastenedly connected with valve body of main valve 11 by screw, and regulating device 17 is connected through a screw thread with end cap 16.Limit
Position bar 18 is connected through a screw thread with regulating device 17, and the position of gag lever post 18 is adjusted by using allen wrench and can adjust main valve
The stroke of core 12 is so as to adjust the maximum stream flow of actuator port.
The structure of first pilot control chamber a is similar to the structure of the second pilot control chamber b, and details are not described herein again.
The present invention also provides a kind of hydraulic system, including load-sensitive hydraulic pump, hydraulic cylinder executive component, pilot control system
System and the multi-way valve with above-mentioned work connection.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
It can modify to the specific embodiment of the present invention or equivalent replacement is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical solution should all cover in the claimed technical solution range of the present invention.
Claims (14)
1. a kind of hydraulic control valve, which is characterized in that join including work, work connection with oil inlet (P), oil discharge outlet (T),
First actuator port (A) and the second actuator port (B) and including：
Main control valve (1), including the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port and the 4th hydraulic fluid port, first hydraulic fluid port with it is described into
Hydraulic fluid port (P) connects, and second hydraulic fluid port is connect with the oil discharge outlet (T), the third hydraulic fluid port and first actuator port (A)
Connection, the 4th hydraulic fluid port are connect with the second actuator port (B)；
The main control valve (1) has the first operating position and the second operating position, in first operating position, the master control
Valve (1) processed controls first hydraulic fluid port to be in fluid communication with the third hydraulic fluid port and controls described in the fluid flow direction of the 4th hydraulic fluid port
Third hydraulic fluid port；In second operating position, the main control valve controls first hydraulic fluid port to connect with the 4th hydraulic fluid port fluid
It is logical.
2. hydraulic control valve according to claim 1, which is characterized in that the main control valve includes being set to the third
Check valve between hydraulic fluid port and the 4th hydraulic fluid port, in first operating position, the check valve controls fluid from described the
Four hydraulic fluid ports flow to the third hydraulic fluid port.
3. hydraulic control valve according to claim 2, which is characterized in that the hydraulic control valve includes valve body (11), master
Spool (12) and the first regeneration spool (13) and the second regeneration spool (19), the main valve plug (12) is with axis hole, and described the
One regeneration spool (13) is set to the first end of the axis hole, and the second regeneration spool (19) is set to the second of the axis hole
End, the first regeneration spool (13) and the second regeneration spool (19) form the check valve relative to the axis hole,
First operating position, the first regeneration spool (13) and the second regeneration spool (19) are opened, the 4th oil
The fluid of mouth flows to the third oil by the first regeneration spool (13), the axis hole and the second regeneration spool (19)
Mouthful.
4. hydraulic control valve according to claim 3, which is characterized in that the hydraulic control valve further include be set to it is described
The first plug (27) of the first end of axis hole, first plug (27) for limit it is described first regeneration spool position；
And/or the hydraulic control valve further includes the second plug of the second end for being set to the axis hole, second plug is used to limit
Make the position of the second regeneration spool.
5. hydraulic control valve according to claim 4, which is characterized in that the hydraulic control valve further include be set to it is described
Spring (28) between first plug (27) and the first regeneration spool (13)；And/or the hydraulic control valve is further included and is set
The spring being placed between second plug and the second regeneration spool.
6. hydraulic control valve according to claim 4, which is characterized in that the diameter of the end of the main valve plug (12) is less than
Diameter in the middle part of it.
7. hydraulic control valve according to claim 1, which is characterized in that the main control valve (1) also has third work
Position, at the third operating position, first hydraulic fluid port, second hydraulic fluid port, the third hydraulic fluid port and the described 4th
Hydraulic fluid port is turned off, and the work connection further includes the holding valve being set between second actuator port and the 4th hydraulic fluid port
(3), when the main control valve (1) is in the third operating position, the holding valve (3) controls second actuator port
Oil circuit between the 4th hydraulic fluid port disconnects.
8. hydraulic control valve according to claim 7, which is characterized in that the holding valve (3) includes the first hydraulic fluid port (3a)
With the second hydraulic fluid port (3b), first hydraulic fluid port (3a) for keeping valve is connected with the 4th hydraulic fluid port of the main control valve (1), the guarantor
The second hydraulic fluid port (3b) for holding valve is connected with second actuator port, and the holding valve (3) controls its first hydraulic fluid port (3a) and its
Break-make between second hydraulic fluid port (3b).
9. hydraulic control valve according to claim 1, which is characterized in that the work connection, which further includes, is set to described second
Overload oil compensating valve (4) between actuator port and the oil discharge outlet.
10. hydraulic control valve according to claim 9, which is characterized in that the overload oil compensating valve (4) including overflow valve and
The check valve being arranged in parallel with the overflow valve, the oil inlet of the check valve are connect with the oil discharge outlet, the check valve
Oil outlet is connect with second actuator port.
11. hydraulic control valve according to claim 1, which is characterized in that the work connection further includes pressure compensator
(2), the main control valve (1) further includes the 5th hydraulic fluid port and the 6th hydraulic fluid port, and the 5th hydraulic fluid port is connected with first hydraulic fluid port, institute
It states the 6th hydraulic fluid port selectively to connect with the third hydraulic fluid port or the 4th hydraulic fluid port, the pressure compensator (2) is set to institute
It states between the 5th hydraulic fluid port and the 6th hydraulic fluid port to control between the first hydraulic fluid port of the main control valve and the 6th hydraulic fluid port
Pressure difference is setting value.
12. hydraulic control valve according to claim 11, which is characterized in that the work connection, which further includes, is set to the pressure
Check valve (9) between 6th hydraulic fluid port of force compensating device (2) and the main control valve (1), the oil inlet of the check valve (9) with
Pressure compensator (2) connection, the oil outlet of the check valve (9) are connect with the 6th hydraulic fluid port of the main control valve (1).
13. hydraulic control valve according to claim 1, which is characterized in that the hydraulic control valve is multi-way valve, described more
Road valve includes at least two work connection.
14. a kind of hydraulic system, which is characterized in that including the hydraulic control valve as described in any one of claim 1 to 13.
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| CN201810224783.XA CN108252979A (en) | 2018-03-19 | 2018-03-19 | Hydraulic control valve and hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810224783.XA CN108252979A (en) | 2018-03-19 | 2018-03-19 | Hydraulic control valve and hydraulic system |
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| CN108252979A true CN108252979A (en) | 2018-07-06 |
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| CN201810224783.XA Pending CN108252979A (en) | 2018-03-19 | 2018-03-19 | Hydraulic control valve and hydraulic system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983017A (en) * | 2021-10-11 | 2022-01-28 | 中联重科股份有限公司 | Multi-way valve reversing linkage and hydraulic system |
| CN114165495A (en) * | 2021-11-23 | 2022-03-11 | 江苏汇智高端工程机械创新中心有限公司 | Multi-way valve with independently controlled working link and valve port and engineering machinery |
| CN114671168A (en) * | 2022-04-26 | 2022-06-28 | 徐州徐工环境技术有限公司 | Pressure and flow controllable integrated valve of garbage compression station and working method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236901A (en) * | 1985-04-15 | 1986-10-22 | Kayaba Ind Co Ltd | Hydraulic controller for regeneration and preferential use |
| DE102005033222A1 (en) * | 2005-07-15 | 2007-01-18 | Bosch Rexroth Aktiengesellschaft | Load independent flow distribution valve arrangement for controlling hydraulic load has non-return valve opening which is arranged in flow path of pressurized medium in direction of flow connection |
| CN102633213A (en) * | 2012-04-28 | 2012-08-15 | 安徽合力股份有限公司 | Energy regeneration type forklift hydraulic system |
| CN102678687A (en) * | 2012-05-22 | 2012-09-19 | 山河智能装备股份有限公司 | On-car revolution energy-saving system |
| CN204553385U (en) * | 2015-02-11 | 2015-08-12 | 徐工集团工程机械股份有限公司 | Valve core of multiway valve, load sensing multi-way valve and excavator |
| CN205371127U (en) * | 2015-12-16 | 2016-07-06 | 赫斯可液压(上海)有限公司 | Excavator control valve case regeneration structure |
| CN106545041A (en) * | 2015-11-06 | 2017-03-29 | 徐工集团工程机械股份有限公司 | Hydraulic control system and excavator |
| CN206308728U (en) * | 2016-11-04 | 2017-07-07 | 山东常林机械集团股份有限公司 | A kind of energy-conservation excavator swing arm potential energy recycle device |
| CN208089657U (en) * | 2018-03-19 | 2018-11-13 | 徐工集团工程机械有限公司 | hydraulic control valve and hydraulic system |
-
2018
- 2018-03-19 CN CN201810224783.XA patent/CN108252979A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236901A (en) * | 1985-04-15 | 1986-10-22 | Kayaba Ind Co Ltd | Hydraulic controller for regeneration and preferential use |
| DE102005033222A1 (en) * | 2005-07-15 | 2007-01-18 | Bosch Rexroth Aktiengesellschaft | Load independent flow distribution valve arrangement for controlling hydraulic load has non-return valve opening which is arranged in flow path of pressurized medium in direction of flow connection |
| CN102633213A (en) * | 2012-04-28 | 2012-08-15 | 安徽合力股份有限公司 | Energy regeneration type forklift hydraulic system |
| CN102678687A (en) * | 2012-05-22 | 2012-09-19 | 山河智能装备股份有限公司 | On-car revolution energy-saving system |
| CN204553385U (en) * | 2015-02-11 | 2015-08-12 | 徐工集团工程机械股份有限公司 | Valve core of multiway valve, load sensing multi-way valve and excavator |
| CN106545041A (en) * | 2015-11-06 | 2017-03-29 | 徐工集团工程机械股份有限公司 | Hydraulic control system and excavator |
| CN205371127U (en) * | 2015-12-16 | 2016-07-06 | 赫斯可液压(上海)有限公司 | Excavator control valve case regeneration structure |
| CN206308728U (en) * | 2016-11-04 | 2017-07-07 | 山东常林机械集团股份有限公司 | A kind of energy-conservation excavator swing arm potential energy recycle device |
| CN208089657U (en) * | 2018-03-19 | 2018-11-13 | 徐工集团工程机械有限公司 | hydraulic control valve and hydraulic system |
Non-Patent Citations (4)
| Title |
|---|
| 于俊崇等: "船用核动力", vol. 1, 上海交通大学出版社, pages: 157 * |
| 刘光清: "液压与气压传动技术", vol. 1, 30 November 2015, 西南交通大学出版社, pages: 71 * |
| 刘合涛等: "基于LS信号放大的控制阀设计", 流体传动与控制, no. 2, pages 22 - 24 * |
| 汽车驾驶员新等级标准教材编委会编: "汽车维修 中级工", vol. 1, 30 June 1992, 上海交通大学出版社, pages: 157 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983017A (en) * | 2021-10-11 | 2022-01-28 | 中联重科股份有限公司 | Multi-way valve reversing linkage and hydraulic system |
| CN114165495A (en) * | 2021-11-23 | 2022-03-11 | 江苏汇智高端工程机械创新中心有限公司 | Multi-way valve with independently controlled working link and valve port and engineering machinery |
| CN114165495B (en) * | 2021-11-23 | 2022-10-18 | 江苏汇智高端工程机械创新中心有限公司 | Multi-way valve with independently controlled working link and valve port and engineering machinery |
| WO2023092871A1 (en) * | 2021-11-23 | 2023-06-01 | 江苏汇智高端工程机械创新中心有限公司 | Working link, valve port independent control type multi-way valve, and engineering machine |
| CN114671168A (en) * | 2022-04-26 | 2022-06-28 | 徐州徐工环境技术有限公司 | Pressure and flow controllable integrated valve of garbage compression station and working method |
| CN114671168B (en) * | 2022-04-26 | 2024-01-09 | 徐州徐工环境技术有限公司 | Pressure and flow controllable garbage compression station integrated valve and working method |
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