CN105443480B - Work connection valve body structure and proportional multi-way valve - Google Patents
Work connection valve body structure and proportional multi-way valve Download PDFInfo
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- CN105443480B CN105443480B CN201410394407.7A CN201410394407A CN105443480B CN 105443480 B CN105443480 B CN 105443480B CN 201410394407 A CN201410394407 A CN 201410394407A CN 105443480 B CN105443480 B CN 105443480B
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- pressure
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- 239000012530 fluid Substances 0.000 claims abstract description 31
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 52
- 238000010586 diagram Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
- F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/024—Pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/028—Shuttle valves
Abstract
The present invention relates to one kind work connection valve body structure and proportional multi-way valve, work connection valve body structure includes the valve body body that work joins, it is arranged on the intrinsic main reversing valve of the valve body and pressure-compensated valve, the pressure-compensated valve carries out valve precompensation to the main reversing valve, the valve body body has valve body oil inlet, valve body oil return opening and two load hydraulic fluid ports, it is characterized in that, also include the first shuttle valve, two oil inlets of first shuttle valve join the input of the load pressure of in running order lower two load hydraulic fluid ports for receiving the valve body body respectively in the work, the oil-out of first shuttle valve exports the load pressure filtered out the spring side control chamber to the pressure-compensated valve.With existing compared with valve element is by way of the different cooperation positions of valve body are come output loading operating pressure, the screening structure of the load pressure of the first shuttle valve of the present invention can simplify the structure of valve element and valve body, reduce difficulty of processing.
Description
Technical field
The present invention relates to field of hydraulic control, more particularly to a kind of work connection valve body structure and proportional multi-way valve.
Background technology
Proportional multi-way valve is the core parts of construction machinery hydraulic system, between pump and executive component.It is many in ratio
In the valve of road, commutated frequently with manual control commutation or proportion electro-magnet electrichydraulic control, the change for making the stroke of valve element proportional, with
Just the flow of accuracy-control system.For load sensitive system, it will usually play balanced load using pressure-compensated valve,
Make all valve rod inlet outlet pressure differentials equal, it is ensured that the work connection flow of proportional multi-way valve is only relevant with the stroke of the manipulation valve rod,
Manipulator is easily controlled its composite move by the hope of oneself, keeps the independence of each actuator motions.
In current load-sensitive proportional multi-way valve, during work connection work, the pressure corresponding to A, B mouth of load is logical
Cross valve element cooperation position different from valve body to draw loaded work piece pressure, and feed back in system, the low work of compensation load
Make the pressure joined, the pressure difference for importing and exporting main valve plug keeps constant, and then makes load flow proportional to spool stroke.Pressure is mended
Although repay valve arrangement can equally loaded, its each connection load feedback pressure is by the different cooperation position of valve element, valve body
Pressure-compensated valve one end is fed back to, this can make valve element, valve body structure extremely complex, and then increase difficulty of processing.
In addition, the overflow valve in current proportional multi-way valve is generally using the plug-in overflow valve being installed on valve body, or
Person is installed on valve inner by each part and realizes overflow valve function, and these overflow valve forms are existed that structure is more complicated, peace
Fill the shortcomings of big space, pressure regulation inconvenience.
The content of the invention
The purpose of the present invention is to propose to one kind work connection valve body structure and proportional multi-way valve, pressure-compensated valve can met
Under the constant requirement of core two ends pressure difference, simplify valve element, the structure of valve body, reduce difficulty of processing.
To achieve the above object, the invention provides one kind work connection valve body structure, including work connection valve body body, set
Put in the intrinsic main reversing valve of the valve body and pressure-compensated valve, the pressure-compensated valve is carried out before valve to the main reversing valve
Compensation, the valve body body has valve body oil inlet, valve body oil return opening and two load hydraulic fluid ports, wherein, in addition to the first shuttle valve,
Two oil inlets of first shuttle valve join in running order lower receive the valve body body respectively two in the work
The input of the load pressure of hydraulic fluid port is loaded, the oil-out of first shuttle valve exports the load pressure filtered out to the pressure
The spring side control chamber of recuperation valve.
Further, the valve body body also has load-sensitive hydraulic fluid port and load pressure input port, the valve body body
The second shuttle valve is inside additionally provided with, an oil inlet of second shuttle valve receives the input of the oil-out of first shuttle valve, separately
One oil inlet receives the load pressure joined from operated adjacent inputted by the load pressure input port, second shuttle
The load pressure filtered out is output to the load-sensitive hydraulic fluid port by the oil-out of valve.
Further, two work formed between the valve element of the main reversing valve and the intrinsic main valve hole of the valve body
Chamber is connected with two of valve body body load hydraulic fluid ports by valve inner oil duct respectively, the valve element of the main reversing valve with
The oil suction chamber formed between the intrinsic main valve hole of valve body is connected via the pressure-compensated valve with the valve body oil inlet
Logical, the oil back chamber formed between the valve element of the main reversing valve and the intrinsic main valve hole of the valve body passes through valve inner oil duct
It is connected with the valve body oil return opening.
Further, first shuttle valve and the second shuttle valve are plug-in structure, and the valve is screwed into by end thread
In body body, plug is equipped with the end of first shuttle valve and the second shuttle valve.
Further, the two ends in the intrinsic main valve hole of the valve body in the axial direction are respectively equipped with ring-shaped groove, institute
The ring-shaped groove for stating main valve hole two ends is connected by valve inner oil duct with two oil inlets of first shuttle valve respectively
It is logical, in the case where work connection is in running order, between the valve element of the main reversing valve and the intrinsic main valve hole of the valve body
The ring-shaped groove of two working chambers formed respectively with the main valve hole two ends is connected, the oil-out of first shuttle valve
Pass through valve inner oil duct with the spring side control chamber of the pressure-compensated valve and an oil inlet of second shuttle valve respectively
Be connected, another oil inlet and oil-out of second shuttle valve respectively with the load pressure input port of the valve body body and
Load-sensitive hydraulic fluid port is connected by valve inner oil duct；It is in work connection under off working state, the main valve hole two
The ring-shaped groove at end is respectively by forming between the valve element and the intrinsic main valve hole of the valve body of the main reversing valve
Oil duct is connected with the oil back chamber.
Further, in the ring-shaped groove two oil inlets respectively with first shuttle valve at the main valve hole two ends
Connection oil circuit in further respectively have throttle orifice.
Further, the first overflow valve and the second overflow valve, first overflow valve are additionally provided with the valve body body
It is connected respectively with two oil inlets of first shuttle valve by valve inner oil duct with the oil inlet of the second overflow valve, it is described
The oil-out of first overflow valve and the second overflow valve is connected with the valve body oil return opening by valve inner oil duct.
Further, first overflow valve and the second overflow valve are inserted into the valve opening of the valve body body, described
First overflow valve and the second overflow valve are specifically included：Plug, spring base, poppet valve core and spring, the poppet valve core, spring base and bullet
Spring is arranged on the surface of the valve body body, the outer ring of the spring base in the valve opening by the plug
Provided with screw thread, coordinated by screw thread and be arranged in the valve opening, the conical surface of the poppet valve core is acted on inside the valve opening, described
Spring effect is between the spring base and poppet valve core.
Further, the plug be arranged on the valve body body on relative to the main valve hole axis direction inclination
On surface.
Further, the spring base can control the spring by the distance between regulation and described poppet valve core
Pre compressed magnitude.
Further, it is further opened with that the cone of compression shock when valve element is opened can be alleviated on the valve element of the main reversing valve
Shape groove or U-lag.
Further, the internal galleries at the valve element two ends of the main reversing valve are also separately installed with plug, the plug
Sealed by screw thread glue.
To achieve the above object, the invention provides a kind of proportional multi-way valve, the valve body structure of first and tail connection is included, its
In, in addition at least one foregoing work connection valve body structure.
Further, the work connection valve body structure is carried out and other works by being installed on the alignment pin of valve body body end face
The hydraulic fluid port made between the positioning action of connection valve body structure, and each work connection valve body structure is sealed by O-ring.
Based on above-mentioned technical proposal, the present invention, which will work, joins the two load hydraulic fluid ports correspondences of valve body structure in the operating condition
Load pressure draw simultaneously, and screened by the first shuttle valve, be provided to the spring side control chamber of pressure-compensated valve,
To make pressure-compensated valve two ends pressure difference stable, it is ensured that the compensation function of pressure-compensated valve is stable, reduce impact, and pass through with existing
Valve element compared with the different cooperation positions of valve body carry out the mode of output loading operating pressure, the first shuttle valve of the present invention
The screening structure of load pressure can simplify the structure of valve element and valve body, reduce difficulty of processing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 joins the hydraulic principle schematic diagram of an embodiment of valve body structure for present invention work.
Fig. 2 joins the hydraulic principle schematic diagram of another embodiment of valve body structure for present invention work.
Fig. 3 A, 3B are respectively the schematic cross-section that present invention work joins the connection valve body structure that worked in valve body structure embodiment.
Fig. 4 joins the external view of valve body structure to be worked in present invention work connection valve body structure embodiment.
Fig. 5 is the schematic diagram of Section A-A in Fig. 4 embodiments.
Fig. 6 is the schematic diagram of section B-B in Fig. 4 embodiments.
Embodiment
Below by drawings and examples, technical scheme is described in further detail.
As shown in figure 1, the hydraulic principle schematic diagram of the embodiment for present invention work connection valve body structure.In the present embodiment
In, work connection valve body structure includes the valve body body (part that i.e. double dot dash line is surrounded in figure) of work connection, is arranged on valve body
Intrinsic main reversing valve 7 and pressure-compensated valve 2, pressure-compensated valve 2 can carry out valve precompensation to main reversing valve 7 so that main
The front and rear pressure difference of reversal valve 7 is constant, and then makes work connection flow only proportional to the stroke of the valve element of main reversing valve 7, and with bearing
Carry unrelated.Valve body body has valve body oil inlet P, valve body oil return inlet T and two load hydraulic fluid ports A, B.
Work connection valve body structure also includes the first shuttle valve 3, and two oil inlets of first shuttle valve are in work in this work connection
Make to receive the input of two load hydraulic fluid ports A, B of valve body body load pressure respectively under state, and the oil-out of the first shuttle valve 3
The load pressure filtered out is exported into the spring side control chamber to pressure-compensated valve 2.What the first shuttle valve 3 was played is relatively this work
Join the pressure of two load hydraulic fluid ports of valve body structure, and take out the effect that relatively large load pressure is exported, and export larger
Load pressure can make pressure-compensated valve two ends pressure difference stable, it is ensured that pressure compensation to the spring side control chamber of pressure-compensated valve 2
The compensation function of valve is stable, reduces impact.Load-sensitive hydraulic fluid port LS can also be optionally set up in the present embodiment, so as to first
The load pressure filtered out is output to the variable control mechanism of other work connection or load sensitive pump by shuttle valve 3.
Existing work connection valve body structure is previously noted to generally require by valve element cooperation position different from valve body come defeated
Go out corresponding loaded work piece pressure, such as, it is necessary to by valve when being currently in load condition, it is necessary to export A mouthfuls of load pressures for A mouthfuls
The structure that core is moved on ad-hoc location, and valve element will carry out cooperation with the structure on valve body can be by A mouthfuls of load pressure
Power is drawn, and when being in load condition for B mouthful, then and needs valve element moving another ad-hoc location, utilizes valve element and valve body
Fit structure draws B mouthfuls of load pressure, in order to realize the extraction of the above-mentioned certain loads pressure under certain working condition, often
Need to design complicated structure on valve body and valve element, so as to add difficulty of processing.And by comparison, the present embodiment is used
The first shuttle valve load pressure screening structure in the case where work connection is in loaded state simultaneously by two load hydraulic fluid ports
Pressure is all drawn, and is recycled the first shuttle valve to filter out the larger progress of load pressure and is exported, this function corresponds to valve element and valve
The complexity of the fit structure of body is much lower, and difficulty of processing is reduced accordingly.
With reference to the schematic cross-section of Fig. 3 A, 3B work connection valve body structure, valve element 18 and the valve body body 11 of main reversing valve 7
Two working chambers formed between interior main valve hole pass through valve inner oil with two load hydraulic fluid port A, B of valve body body 11 respectively
Road is connected, and the oil suction chamber formed between the main valve hole in the valve element 18 and valve body body 11 of main reversing valve 7 is mended via pressure
Repay valve 2 with valve body oil inlet P to be connected, what is formed between the main valve hole in the valve element 18 and valve body body 11 of main reversing valve 7 returns
Oil pocket is connected by internal galleries with valve body oil return inlet T.In addition, the two ends of valve element 18 of main reversing valve 7 internal galleries also
Plug 20,17 can be separately installed with, plug 20,17 is sealed by screw thread glue.
As shown in Fig. 2 the hydraulic principle schematic diagram of another embodiment for present invention work connection valve body structure.It is real with upper one
Apply example to compare, the valve body body in the present embodiment can also further increase load-sensitive hydraulic fluid port LS and load pressure input port
LS ', and the second shuttle valve 1 can be set in valve body body, an oil inlet of the second shuttle valve 1 receives the oil-out of the first shuttle valve 3
Input, another oil inlet receives the load pressure joined from operated adjacent inputted by load pressure input port LS ', the
The load pressure filtered out is output to load-sensitive hydraulic fluid port LS by the oil-out of two shuttle valves 1.What the second shuttle valve 1 was played is to compare phase
Maximum load pressure can be as load-sensitive in the effect of the load pressure of neighbour's work connection, each work connection finally compared
Signal passes the variable control mechanism of load sensitive pump back.
Still with Fig. 3 A, 3B, the valve element 18 of the main reversing valve 7 in wherein Fig. 3 B is relative to the valve element 18 in Fig. 3 A along axis
It has rotated 90 degree.It can see from Fig. 3 A, 3B, ring be respectively equipped with the two ends of the intrinsic main valve hole of valve body in the axial direction
Shape groove I and II, and ring-shaped groove I, the II at main valve hole two ends are entered by two of valve inner oil duct and the first shuttle valve 3 respectively
Hydraulic fluid port is connected, and can see from Fig. 3 A, under work connection is in running order, that is, is switched to left working position or right working position
When, two working chambers formed between the intrinsic main valve hole of valve element 18 and valve body of main reversing valve 7 respectively with main valve hole two ends
Ring-shaped groove I, II be connected, and the oil-out of the first shuttle valve 3 respectively with the spring side control chamber of pressure-compensated valve 2 and second
One oil inlet of shuttle valve 1 is connected by valve inner oil duct, another oil inlet and oil-out of the second shuttle valve 1 respectively with
The load pressure input port LS ' of valve body body is connected with load-sensitive hydraulic fluid port LS by valve inner oil duct.
As can be seen from Figure 3B, it is in work connection under off working state, ring-shaped groove I, the II at main valve hole two ends can be with
It is connected respectively by the oil duct formed between the valve element 18 and the intrinsic main valve hole of valve body of main reversing valve 7 with oil back chamber.
Fig. 4 shows the external view for the connection valve body structure that worked in present invention work connection valve body structure embodiment.With reference to Fig. 3
And Fig. 4, the valve element 18 that main reversing valve 7 is observed that on valve body body, the spring for the valve element 12 for being arranged on pressure-compensated valve 2
Plug 33, plug 31 of the second shuttle valve 1 of stifled 15, first shuttle valve 3 of guiding of side etc., wherein can open up cone tank on valve element 18
Or U-lag, for alleviating compression shock when valve element is opened, executing agency is smoothly worked.Being oriented to stifled 15 can be right
The spring 14 of the side of valve element 12 of pressure-compensated valve 2 plays a part of guiding, and is collectively forming the control of spring side with valve element 12
Chamber (i.e. the right-hand member of valve element 12 in Fig. 3).And also have plug 21 in the opposite side of valve element 12, the side plug 21 and the formation nothing of valve element 12
The control chamber (i.e. the left end of valve element 12 in Fig. 3) of spring side, pump discharge pressure oil can be from the valve body oil-feed of valve body body 11
Internal galleries of the mouth P through valve element 12 reach the left end of valve element 12, are so achieved that the pressure difference before and after the valve element 18 of main reversing valve 7
It is constant, make load hydraulic fluid port flow proportional to the opening of valve element 18.
First shuttle valve 3 and the second shuttle valve 1 can use plug-in structure, be screwed into by end thread in valve body body 11,
Fig. 5 shows this plug-in mounting structure, and is respectively equipped with plug 33 and plug 31 in the end of the first shuttle valve 3 and the second shuttle valve 1.This
In two shuttle valves be the commercially available part of business, it is and easy for installation.
In Fig. 2 embodiments, ring-shaped groove I, the II at the main valve hole two ends in valve body body 11 respectively with the first shuttle valve 3
Two oil inlets A, B connection oil circuit in further respectively have throttle orifice 8 and throttle orifice 4.Throttle orifice 4,8 can be right as damping
Compression shock enters row buffering.Two of main reversing valve 7 are coupled with further from the pilot pressure oil outside work connection valve body structure
Control end a, b, motion of the valve element 18 of main reversing valve 7 in main valve hole, the row of valve element 18 are controlled by electrichydraulic control mode
Journey is proportional to pilot pressure.
, can be in valve body sheet in order to limit highest system pressure of the valve element 18 of main reversing valve 7 at left and right operating position
The first overflow valve 6 and the second overflow valve 5 are provided with vivo, the oil inlet of the overflow valve 5 of the first overflow valve 6 and second is respectively with
Two oil inlets of one shuttle valve 3 are connected by valve inner oil duct, and the oil-out of the first overflow valve 6 and the second overflow valve 5 is equal
It is connected with valve body oil return inlet T by valve inner oil duct.
It can see from Fig. 4 and Fig. 6, the mounting structure of the first overflow valve 6 and the second overflow valve 5, wherein the first overflow valve 6
It is inserted into the valve opening of valve body body 11 with the second overflow valve 5, and the first overflow valve 6 and the second overflow valve 5 are specifically included：It is stifled
First 36, spring base 37, poppet valve core 38 and spring 39, poppet valve core 38, spring base 37 and spring 39 are located in valve opening, and by stifled
First 36 are arranged on the surface of valve body body 11, and the outer ring of spring base 37 is provided with screw thread, is coordinated by screw thread and is arranged in valve opening,
And the conical surface of poppet valve core 38 is acted on inside valve opening, spring 39 is acted between spring base 37 and poppet valve core 38.
Spring base 37 can easily adjust it the distance between with poppet valve core 38, so as to realize the pre compressed magnitude of spring 39
Regulation, and then realize the regulation of overflow valve set pressure.When system pressure is excessive, poppet valve core 38 is in the presence of hydraulic oil
Be pushed to spring base 37 so that Opening pressure off-load, and the first overflow valve 6 and the second overflow valve 5 can by spring base 37 come
It is set to different set pressures.In addition, plug 36 may be mounted at the axis direction relative to main valve hole on valve body body 11
Inclined surface on, can so facilitate the pressure of the first overflow valve 6 and the second overflow valve 5 to set.
The work connection valve body structure of the present invention can be applied to what proportional multi-way valve, i.e. proportional multi-way valve joined including first and tail
Valve body structure, and at least one foregoing any work join the embodiment of valve body structure.And work connection valve body structure can
By being installed on the alignment pin 32,35 of the end face of valve body body 11 with other work join the positioning action of valve body structure, and
Hydraulic fluid port between each work connection valve body structure can be sealed by O-ring.
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
The embodiment of the present invention can be modified or equivalent substitution is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical scheme, it all should cover among claimed technical scheme scope of the invention.
Claims (12)
1. one kind work connection valve body structure, including work connection valve body body, be arranged on the intrinsic main reversing valve of the valve body
And pressure-compensated valve, the pressure-compensated valve carries out valve precompensation to the main reversing valve, and there is the valve body body valve body to enter
Hydraulic fluid port, valve body oil return opening, load-sensitive hydraulic fluid port, load pressure input port and two load hydraulic fluid ports, it is characterised in that also including the
The second shuttle valve is additionally provided with one shuttle valve, the valve body body, two oil inlets of first shuttle valve are at the work connection
In the input of the load pressure for two load hydraulic fluid ports for receiving the valve body body under working condition respectively, first shuttle valve
Oil-out exports the load pressure filtered out the spring side control chamber to the pressure-compensated valve；One of second shuttle valve
Oil inlet receives the input of the oil-out of first shuttle valve, and another oil inlet receives defeated by the load pressure input port
The load pressure filtered out is output to described by the load pressure joined from operated adjacent entered, the oil-out of second shuttle valve
Load-sensitive hydraulic fluid port；
Ring-shaped groove is respectively equipped with the two ends of the intrinsic main valve hole of the valve body in the axial direction, the main valve hole two ends
The ring-shaped groove is connected by valve inner oil duct with two oil inlets of first shuttle valve respectively, in work connection
Under in running order, two working chambers formed between the valve element of the main reversing valve and the intrinsic main valve hole of the valve body
The ring-shaped groove with the main valve hole two ends is connected respectively, and the oil-out of first shuttle valve is mended with the pressure respectively
Repay the spring side control chamber of valve with an oil inlet of second shuttle valve by valve inner oil duct to be connected, second shuttle
Another oil inlet and oil-out of valve pass through with the load pressure input port of the valve body body and load-sensitive hydraulic fluid port respectively
Valve inner oil duct is connected；It is in work connection under off working state, the ring-shaped groove at the main valve hole two ends
Pass through the oil duct formed between the valve element and the intrinsic main valve hole of the valve body of the main reversing valve and the main commutation respectively
The oil back chamber formed between the valve element of valve and the intrinsic main valve hole of the valve body is connected.
2. work according to claim 1 joins valve body structure, it is characterised in that the valve element of the main reversing valve and the valve
Two working chambers formed between the intrinsic main valve hole of body pass through valve body with two load hydraulic fluid ports of the valve body body respectively
Internal galleries are connected, the oil suction chamber formed between the valve element of the main reversing valve and the intrinsic main valve hole of the valve body via
The pressure-compensated valve is connected with the valve body oil inlet, and the oil back chamber passes through valve inner oil duct and the valve body oil return
Mouth is connected.
3. work according to claim 2 joins valve body structure, it is characterised in that first shuttle valve and the second shuttle valve are
Plug-in structure, is screwed into the valve body body by end thread, is all provided with the end of first shuttle valve and the second shuttle valve
There is plug.
4. work according to claim 2 joins valve body structure, it is characterised in that the annular at the main valve hole two ends
Groove in the connection oil circuit of two oil inlets of first shuttle valve respectively with further respectively having throttle orifice.
5. work according to claim 2 joins valve body structure, it is characterised in that be additionally provided with first in the valve body body
Overflow valve and the second overflow valve, the oil inlet of first overflow valve and the second overflow valve respectively with first shuttle valve two
Oil inlet is connected by valve inner oil duct, and the oil-out of first overflow valve and the second overflow valve is returned with the valve body
Hydraulic fluid port is connected by valve inner oil duct.
6. work according to claim 5 joins valve body structure, it is characterised in that first overflow valve and the second overflow valve
In the valve opening for being inserted into the valve body body, first overflow valve and the second overflow valve are specifically included：Plug, spring base,
Poppet valve core and spring, the poppet valve core, spring base and spring are arranged on described in the valve opening by the plug
On the surface of valve body body, the outer ring of the spring base is provided with screw thread, is coordinated by screw thread and is arranged in the valve opening, the cone
The conical surface of valve element is acted on inside the valve opening, and the spring effect is between the spring base and poppet valve core.
7. work according to claim 6 joins valve body structure, it is characterised in that the plug is arranged on the valve body body
On on inclined surface relative to the axis direction of the main valve hole.
8. work according to claim 6 joins valve body structure, it is characterised in that the spring base can pass through regulation and institute
The distance between poppet valve core is stated to control the pre compressed magnitude of the spring.
9. work according to claim 2 joins valve body structure, it is characterised in that also opened on the valve element of the main reversing valve
Cone tank or U-lag provided with compression shock when can alleviate valve element unlatching.
10. work according to claim 2 joins valve body structure, it is characterised in that at the valve element two ends of the main reversing valve
Internal galleries be also separately installed with plug, the plug is sealed by screw thread glue.
11. a kind of proportional multi-way valve, includes the valve body structure of first and tail connection, it is characterised in that also including at least one right
It is required that 1~10 any described work connection valve body structure.
12. proportional multi-way valve according to claim 11, it is characterised in that the work joins valve body structure by being installed on
The alignment pin of valve body body end face join with other work the positioning action of valve body structure, and each work connection valve body structure
Between hydraulic fluid port sealed by O-ring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394407.7A CN105443480B (en) | 2014-08-12 | 2014-08-12 | Work connection valve body structure and proportional multi-way valve |
| DE102015215267.7A DE102015215267B4 (en) | 2014-08-12 | 2015-08-11 | Functional connection valve body structure and proportional multi-way valve |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410394407.7A CN105443480B (en) | 2014-08-12 | 2014-08-12 | Work connection valve body structure and proportional multi-way valve |
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| CN105443480A CN105443480A (en) | 2016-03-30 |
| CN105443480B true CN105443480B (en) | 2017-09-08 |
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| CN201410394407.7A Active CN105443480B (en) | 2014-08-12 | 2014-08-12 | Work connection valve body structure and proportional multi-way valve |
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| CN (1) | CN105443480B (en) |
| DE (1) | DE102015215267B4 (en) |
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| CN107504005B (en) * | 2017-10-13 | 2023-12-26 | 浙江海宏液压科技股份有限公司 | Forced oil supplementing multi-way valve driven to judge |
| CN108150475A (en) * | 2018-02-05 | 2018-06-12 | 江苏恒立液压科技有限公司 | Load sensing multi-way valve group and with its walking machine hydraulic system |
| CN108302078A (en) * | 2018-03-19 | 2018-07-20 | 安徽博流体传动股份有限公司 | Remote-control pressure control valve |
| CN108412829B (en) * | 2018-04-09 | 2022-02-11 | 徐州燕大传动与控制技术有限公司 | Load sensitive type multi-way valve with independently adjustable inlet and outlet throttling edges |
| CN108317280B (en) * | 2018-04-18 | 2023-11-21 | 第一拖拉机股份有限公司 | Power reversing valve for tractor |
| CN108591549A (en) * | 2018-06-01 | 2018-09-28 | 江苏安普阀门机械有限公司 | A kind of deep fat overflow valve |
| CN108661966B (en) * | 2018-06-08 | 2019-12-20 | 东莞海特帕沃液压科技有限公司 | Plug-in type pressure compensation valve |
| CN109626215B (en) * | 2019-01-28 | 2023-09-19 | 宁波宇洲液压设备有限公司 | Get-on proportional multi-way valve for lorry-mounted crane |
| CN110319238B (en) * | 2019-08-05 | 2024-03-22 | 安徽理工大学 | High-flow electrohydraulic proportional reversing excitation dual-purpose valve |
| CN112412912B (en) * | 2020-11-27 | 2023-09-08 | 徐州阿马凯液压技术有限公司 | Novel variable regeneration device and system |
| EP4019786B1 (en) | 2020-12-28 | 2023-11-22 | Danfoss Power Solutions (Zhejiang) Co. Ltd | Load-sensing multi-way valve work section |
| CN112797044B (en) * | 2020-12-31 | 2023-07-04 | 徐工集团工程机械股份有限公司 | Sheet type multi-way valve and engineering machinery |
| CN113464514B (en) * | 2021-07-30 | 2023-06-02 | 湖南三一中型起重机械有限公司 | Integrated electric control multi-way valve and crane |
| CN113669315A (en) * | 2021-08-18 | 2021-11-19 | 沈阳北方重矿机械有限公司 | Brand-new coal mine directional drilling machine system integrated valve set |
| CN115750889B (en) * | 2022-11-14 | 2023-09-15 | 大连船用阀门有限公司 | Indirect valve position indicator |
| CN116357776B (en) * | 2023-06-02 | 2023-08-01 | 太原理工大学 | Three-way speed regulating valve for hydraulic support |
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| CN204099322U (en) * | 2014-08-12 | 2015-01-14 | 徐工集团工程机械股份有限公司 | Work connection valve body structure and proportional multi-way valve |
-
2014
- 2014-08-12 CN CN201410394407.7A patent/CN105443480B/en active Active
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2015
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102015215267A1 (en) | 2016-02-18 |
| DE102015215267B4 (en) | 2024-02-01 |
| CN105443480A (en) | 2016-03-30 |
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