CN108412828A - A kind of hydraulic control flat valve - Google Patents
A kind of hydraulic control flat valve Download PDFInfo
- Publication number
- CN108412828A CN108412828A CN201810258108.9A CN201810258108A CN108412828A CN 108412828 A CN108412828 A CN 108412828A CN 201810258108 A CN201810258108 A CN 201810258108A CN 108412828 A CN108412828 A CN 108412828A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 54
- 239000010720 hydraulic oil Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001079814 Symphyotrichum pilosum Species 0.000 description 1
- 235000004224 Typha angustifolia Nutrition 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011144 upstream manufacturing 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of hydraulic control flat valves, including two five logical hydraulic locks, two five logical hydraulic locks include valve body, body wall upper edge is parallel to valve body and is axially disposed with first interface to the 5th interface, two parts up and down are divided by valve seat in valve body, it is provided with the steel ball of position-adjustable in upper part, the bushing with sliding chamber is provided in lower part, being equipped in the sliding chamber can be along valve body slide valve lever in axial sliding.The present invention uses two five logical hydraulic lock structures, coordinate inlet one-way valve and bypass check valve, realize the function of flow control and position self-locking, the hydraulic cylinder both ends of traditional structure are both needed to be sealed by two check valves, it is changed to only need a check valve, the reliability for improving sealing is conducive to hydraulic cylinder long term location self-locking.It is provided with bush structure in the present invention and carries out clearance control, reduces the influence that temperature change moves slide valve lever fit clearance, reduces the possibility that catching phenomenon occurs.
Description
Technical field
The present invention relates to a kind of hydraulic control flat valves, for flow control and position self-locking in the hydraulic tests such as electro-hydraulic actuator
Deng.
Background technology
Hydraulic control flat valve is the core component of electro-hydraulic actuator flux and flow direction control, and leakproofness determines downstream hydraulic cylinder
The reliability that position is kept, affects the working efficiency of upstream hydraulic pump.Traditional two kinds of structures of hydraulic control flat valve generally use, one
It is Double-conical-surface sealing hydraulic pressure lock, for the structure there are hard position limiting sealed situation, sealing effect is poor；Another structure is two four-way liquid
Pressure lock, the structure make downstream hydraulic cylinder both ends be sealed by two check valves, and leak source is more, and sealing reliability is low.
Invention content
For problems of the prior art, the object of the present invention is to provide the high liquid of a kind of good airproof performance, reliability
Control flat valve.
In order to realize that above-mentioned task, the present invention use following technical scheme：
A kind of hydraulic control flat valve, including two five logical hydraulic locks, described two five logical hydraulic locks include valve body, valve body-side
Wall upper edge is parallel to valve body and is axially disposed with first interface to the 5th interface, is divided into two up and down by valve seat in valve body
Point, it is provided with the steel ball of position-adjustable in upper part, the bushing with sliding chamber is provided in lower part, is assembled in the sliding chamber
Have can along valve body slide valve lever in axial sliding, wherein：
The first interface is connected to the cunning chamber to the 4th interface, described its spaced radial of slide valve lever upper edge
The first oil-through hole is provided with to third oil-through hole, one end of slide valve lever is provided with the mandril that diameter is less than slide valve lever, mandril it is outer
It is provided with the limiting stand that length is less than mandril on wall, the third oil-through hole is provided with axis side opening from the end face of limiting stand；
The other end of the slide valve lever is provided with the axial hole of connection the first oil-through hole and the second oil-through hole along its axial direction；The valve seat
On offer lock hole, the mandril may pass through lock hole and be contacted with the steel ball；5th interface with it is described
Lock hole connection.
Further, it is provided with plug above the valve seat, there is gap between plug and valve seat；The plug following table
Face axially offers the spring eye that diameter is more than the steel ball along plug, and self-locking spring is equipped in spring eye, self-locking spring
Lower end is contacted with the steel ball；The outer cover of the mandril is equipped with resetting spring, one end of resetting spring and the valve seat
Lower surface contact, the other end of resetting spring contacts with the end face of the slide valve lever.
Further, the diameter of part is small between the first oil-through hole and the other end of the slide valve lever on the slide valve lever
In the diameter of rest part on slide valve lever.
Further, on the slide valve lever between the first oil-through hole and the second oil-through hole, third oil-through hole with top
Labyrinth sealing slot group is both provided between bar.
Further, the cunning chamber of the bush inside is that both ends are penetrating and the cavity of sizing, liner outer wall upper edge are parallel
It is axially disposed with the first oil guiding hole to the 4th oil guiding hole in bushing, first oil guiding hole to the 4th oil guiding hole is along lining
It is distributed on the circumferencial direction of set multiple.
Further, the lock hole is through the hole of valve seat upper and lower surface, and lock hole includes superposed first
Taper hole and the second taper hole positioned at lower part, the first taper hole, the second taper hole are connected to by connecting hole；The maximum of first taper hole
Internal diameter is less than the diameter of the steel ball.
Further, the valve inner is provided with the penetrating centre bore in both ends, and platform is provided on the centre bore
Rank slot is provided with the chuck coordinated with step groove on the liner outer wall；The upper end of the valve body is sealed by overhead gage,
The plug is pierced by overhead gage；The valve body lower end is sealed by lower baffle plate.
Further, it is arranged at intervals on the inner wall of the centre bore and first oil guiding hole to the 4th oil guiding hole position
Set corresponding circumferential groove.
Further, two five logical hydraulic locks are arranged two, are denoted as L and R respectively, wherein：The first of L and R connects
Mouth is connected to hydraulic pump, and is connected to fuel tank by first entrance check valve, second entrance check valve respectively；The first of L connects
Mouth connects the third interface of R by the first bypass check valve, and the first interface of R passes through the third that the second bypass check valve connects L
Interface；The 4th interface of the second interface connection R of L, the second interface of the 4th interface connection R of L, the 5th interface difference of L and R
It is connected to the both ends of hydraulic cylinder.
The present invention has following technical characterstic：
1. the present invention uses two five logical hydraulic lock structures, cooperation inlet one-way valve and bypass check valve, flow is realized
The function of control and position self-locking, the hydraulic cylinder both ends of traditional structure are both needed to be sealed by two check valves, are changed to only
A check valve is needed, the reliability of sealing is improved, is conducive to hydraulic cylinder long term location self-locking.
2. being provided with bush structure in the present invention, which uses material identical with slide valve lever, carries out clearance control, altogether
With high/low temperature ageing treatment is carried out, reduces the influence that temperature change moves slide valve lever fit clearance, reduce catching phenomenon
Possibility.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Cross-sectional view when Fig. 2 is two two five logical hydraulic lock connections；
Fig. 3 is the bushing axial section of the present invention；
Fig. 4 is the axial section of the slide valve lever and nail rod of the present invention；
Fig. 5 is the axial section of the valve seat of the present invention；
Fig. 6 is slide valve lever, bushing and the valve seat assembling structure of the present invention along axis profile figure (position 1)；
Fig. 7 is slide valve lever, bushing and the valve seat assembling structure of the present invention along axis profile figure (position 2)；
Fig. 8 is the hydraulic control flat valve forward direction working hydraulic pressure oil flow graph of the present invention；
Fig. 9 is the reversely operated hydraulic oil flow graph of hydraulic control flat valve of the present invention；
Figure label represents：1-plug, 2-self-locking springs, 3-overhead gages, 4-valve bodies, 5-steel balls, 6-valve seats,
7-resetting springs, 8-slide valve levers, 9-bushings, 10-lower baffle plates, the 11-the first bypass check valve, 12-first entrances are unidirectional
Valve, the 13-the second bypass check valve, 14-second entrance check valves, 15-first interfaces, 16-second interfaces, 17-thirds connect
Mouthful, the 18-the four interface, the 19-the five interface, 20-circumferential grooves, the 21-the first oil guiding hole, the 22-the second oil guiding hole, 23-the
Three oil guiding holes, the 24-the four oil guiding hole, 25-closure gasket grooves, 26-limiting stands, 27-axial holes, the 28-the first oil-through hole,
29-the second oil-through hole, 30-third oil-through holes, 31-axis side openings, 32-end faces, 33-sliding chambers, 34-lock holes, 35-the
One taper hole, the 36-the second taper hole, 37-mandrils, 38-chuck.
Specific implementation mode
The invention discloses a kind of hydraulic control flat valve, structure chart is as shown in Figure 1, the flat valve includes two five logical hydraulic pressure
Lock, described two five logical hydraulic locks include valve body 4, and 4 side wall upper edge of valve body is parallel to that valve body 4 is axial to be disposed with first and connect
15 to the 5th interfaces 19 of mouth, i.e. first interface 15, second interface 16, third interface 17, the 4th interface 18 and the 5th interface 19, this
The effect of a little interfaces is the water conservancy diversion for coordinating the slide valve lever 8 of different location to carry out hydraulic oil；It is divided into up and down by valve seat 6 in valve body 4
Two parts, the larger and upper part of lower part is smaller, is provided with the steel ball 5 of position-adjustable in upper part, the effect of steel ball 5 be
When it is contacted with valve seat 6, metal sealing is formed with valve seat 6, to provide reliable sealing for the position self-locking of hydraulic cylinder.Lower part
The bushing 9 with sliding chamber 33 is provided in point, being equipped in the sliding chamber 33 can be along slide valve lever 8 in axial sliding of valve body 4；It is preferred that
Ground, slide valve lever 8 are laid in the center of valve body 4.Wherein：
(first interface 15, second interface 16, third interface 17 and the 4th connect 15 to the 4th interface 18 of first interface
It mouthful 18) is connected to the cunning chamber 33, makes hydraulic oil that can be entered in sliding chamber 33 by four interfaces, or from described
Cunning chamber 33 in flowed out by four interfaces, to coordinate the different location of slide valve lever 8, to realize different functions；
Described its spaced radial of 8 upper edge of slide valve lever is provided with the first oil-through hole 28 to (the first oil-through hole 28, second of third oil-through hole 30
Oil-through hole 29, third oil-through hole 30), described three oil-through holes radially cross slide valve lever 8, when the first oil-through hole 28 and institute
When the first interface 15 stated partially overlaps or is completely superposed in the axial direction, described second oil-through hole 29 and second interface 16, the
Three oil-through holes 30 partially overlap or are completely superposed with third interface 17 in the axial direction；I.e. when hydraulic oil can be by first interface 15
When entering or flowing out in the first oil-through hole 28, hydraulic oil also can flow in or out second by second interface 16, third interface 17
Oil-through hole 29, third oil-through hole 30.
One end of slide valve lever 8 is provided with the mandril 37 that diameter is less than slide valve lever 8, and the effect of mandril 37 is when slide valve lever 8 exists
When being moved in sliding chamber 33, the steel ball 5 can be pushed up by mandril 37, steel ball 5 is made to be disengaged with the valve seat 6
With depressurization state.The limiting stand 26 that length in the axial direction is less than mandril 37 is provided on the outer wall of mandril 37, such as Fig. 4 institutes
Show, limiting stand 26 can be regarded as a cylinder outside fastening head cover；One end of limiting stand 26 and the end of slide valve lever 8 connect
It touches, has a distance between the other end and the end of mandril 37.The diameter of slide valve lever 8 is maximum, and limiting stand 26 takes second place, and mandril 37
Diameter it is relatively minimal.
The third oil-through hole 30 is provided with axis side opening 31 from the end face of limiting stand 26 32；As shown in figure 4, described
Axis side opening 31 includes that edge is parallel to the axial first axle side opening being opened in inside limiting stand 26, and is axially opened in along being parallel to
One end of the second axis side opening in slide valve lever 8, the second axis side opening connects with first axle side opening end, and the diameter of the second axis side opening
More than first axle side opening；The other end of second axis side opening is connected to the third oil-through hole 30.The axis side opening 31 allows
Hydraulic oil is from the third oil-through hole 30 that axis side opening 31 enters slide valve lever 8.Preferably, the axis side opening 31 is along the top
The outer wall of bar 37 opens up.
The other end of the slide valve lever 8 is provided with the axial direction of connection the first oil-through hole 28 and the second oil-through hole 29 along its axial direction
Hole 27；27 one end of axial hole is opened on the end face 32 of slide valve lever 8, the other end in an axial direction to 8 internal stretch of slide valve lever, until
It is connected to the first oil-through hole 28 and the second oil-through hole 29.Lock hole 34 is offered on the valve seat 6, the mandril 37 may pass through
Lock hole 34 is simultaneously contacted with the steel ball 5；The diameter of the lock hole 34 is less than the diameter of steel ball 5, steel ball 5 and lock hole
34 upper end coordinates to realize metal sealing；5th interface 19 is connected to the lock hole 34 so that extraneous hydraulic pressure
Oil can enter the hydraulic oil in slide valve lever 8 or in the sliding chamber 33 by the 5th interface 19, lock hole 34 by axis side opening 31
Across lock hole 34 valve body 4 is flowed out from the 5th interface 19.
As shown in Figure 1,6 top of valve seat is provided with plug 1, there is gap between plug 1 and valve seat 6, which permits
Perhaps hydraulic oil flows between lock hole 34 and the 5th interface 19；1 lower surface of plug is along 1 axial direction of plug namely guiding valve
The axial direction of bar 8 offers the spring eye that diameter is more than the steel ball 5, and spring eye is blind hole, and self-locking spring is equipped in spring eye
2, the lower end of self-locking spring 2 is contacted with the steel ball 5；Under the promotion of mandril 37, the steel ball 5 can enter spring
Kong Zhong；The outer cover of the mandril 37 is equipped with resetting spring 7, and one end of resetting spring 7 and the lower surface of the valve seat 6 connect
It touches, the other end of resetting spring 7 is contacted with the end face 32 of the slide valve lever 8 (being connected with mandril 37).In the present solution, described
Spring eye, lock hole 34, mandril 37, slide valve lever 8, sliding chamber 33 are coaxially disposed.
Further, as shown in figure 4, on the slide valve lever 8 first oil-through hole 28 and the slide valve lever 8 the other end it
Between part diameter be less than slide valve lever 8 on rest part diameter.It is upper end to define slide valve lever 8 one end of mandril 37 is arranged, then
First oil-through hole 28 and the diameter of 8 this part of lower end of slide valve lever are small compared with the diameter of other parts on slide valve lever 8, when slide valve lever 8 fills
After fitting in the cunning chamber 33 of bushing 9, there is gap between sliding 33 side wall of chamber and 8 lower part of slide valve lever, so that hydraulic oil can be by the
One interface 15 flows into.
As Figure 1 and Figure 4, on the slide valve lever 8 between the first oil-through hole 28 and the second oil-through hole 29, third
Labyrinth sealing slot group is both provided between oil-through hole 30 and mandril 37；Include multiple close in each labyrinth sealing slot group
The width of sealing groove, each seal groove is 0.5-0.7mm, and depth is that the setting of 0.28-0.42mm seal groove groups significantly reduces
Leakage rate between slide valve lever 8 and bushing 9 improves the working efficiency of valve body 4.
In the present invention, slide valve lever 8 is not more than 0.01mm with 33 fit clearance of sliding chamber.In order to avoid slide valve lever 8 and sliding chamber 33
Since clamping stagnation caused by temperature change, slide valve lever 8 are all made of identical high-strength abrasion-proof steel with bushing 9 under minim gap,
Ensure identical temperature variability；High/low temperature ageing treatment is carried out, influence of the temperature change to material is reduced；Carry out surface diamond-like
Plating improves mutual moving surface intensity.
The structure of bushing 9 is as shown in Figure 3.Cunning chamber 33 inside the bushing 9 is that both ends are penetrating and the cavity of sizing, lining
It covers 9 outer wall upper edges and is parallel to that bushing 9 is axial to be disposed with 21 to the 4th oil guiding hole 24 of the first oil guiding hole, first Oil Guide
21 to the 4th oil guiding hole 24 of hole is distributed along the circumferencial direction of bushing 9 multiple.The effect of oil guiding hole is that hydraulic oil is enable to pass through
Interface enters in sliding chamber 33.In the example that Fig. 3 is provided, the first oil guiding hole 21 symmetrically lays four on the circumference of bushing 9,
Laying number of the remaining oil guiding hole on bushing 9 is identical as the first oil guiding hole 21 as mode.In four oil guiding holes, the first oil guiding hole
21 be high pressure oil fuel feed hole, and the second oil guiding hole 22 is high pressure oil oil outlet；As shown in Figure 6, Figure 7, when slide valve lever 8 is located at position 1
When, third oil guiding hole 23 is high pressure oil fuel feed hole, and the 4th oil guiding hole 24 is high pressure oil oil outlet；When slide valve lever 8 is located at position 2
When, third oil guiding hole 23 is low pressure oil oil outlet, and the 4th oil guiding hole 24 is low pressure oil fuel feed hole.In four oil guiding holes,
It is sealed by 0 shape rubber ring between adjacent oil guiding hole, rubber ring is mounted in closure gasket groove 25.
As shown in figure 5, for the structural schematic diagram of 6 part of valve seat.The lock hole 34 is through 6 upper and lower surface of valve seat
Hole, lock hole 34 include superposed first taper hole 35 and the second taper hole 36 positioned at lower part, the first taper hole 35, second cone
Hole 36 is connected to by connecting hole；The maximum inner diameter of first taper hole 35 is less than the diameter of the steel ball 5.Slide valve lever 8 is moved through
Cheng Zhong, when mandril 37 passes through lock hole 34 to jack up steel ball 5 upwards, the end face 32 of the limiting stand 26 on 37 outer wall of mandril and institute
After the second taper hole 36 contact stated, the position of mandril 37 is defined, and cannot be continued to move up.In the present solution, steel ball 5 and valve seat
6 sealing is most important, should ensure sealing reliability, can flexibly open again.Using metal conical surface and steel ball 5 in the present invention
Cooperation is sealed, i.e., when steel ball 5 and the first taper hole 35 contact, metal sealing is formed between steel ball 5 and valve seat 6.Described
The frustoconical bevel angle a of first taper hole 35 is 38 ° -46 °, and the axial length L of the first taper hole 35 is 0.25-0.35mm.By long-term close
Envelope property verification experimental verification, the sealing structure can reach 3600h and not reveal.
As shown in Figure 1 and Figure 5, the valve body 4 is internally provided with the penetrating centre bore in both ends, is set on the centre bore
It is equipped with step groove, the chuck 38 coordinated with step groove is provided on 9 outer wall of bushing；The upper end of the valve body 4 passes through
Overhead gage 3 seals, and the plug 1 is pierced by overhead gage 3；Plug 1 is inverted T-shaped structure；4 lower end of valve body passes through lower baffle plate
10 sealings.For the ease of the water conservancy diversion of hydraulic oil, it is arranged at intervals on the inner wall of the centre bore and first oil guiding hole 21
To the corresponding circumferential groove in 24 position of the 4th oil guiding hole 20.For at the first oil guiding hole 21, when hydraulic oil enters first interface 15
In after, subsequently into in circumferential groove 20, be flowed into sliding chamber 33 from circumferential groove 20 by four the first oil guiding holes 21.
As a specific embodiment, in actual use, described two five logical hydraulic locks are arranged two, remember respectively
It is in full symmetric arrangement, it is ensured that medium bidirectional flow type state is always for L and R.As shown in Figure 2；Wherein：The first of L and R connects
Mouth 15 is connected to hydraulic pump, and is connected to fuel tank by first entrance check valve 12, second entrance check valve 14 respectively；L's
First interface 15 connects the third interface 17 of R by the first bypass check valve 11, and the first interface 15 of R is unidirectional by the second bypass
Valve 13 connects the third interface 17 of L；The second interface 16 of L connects the 4th interface 18 of R, and the 4th interface 18 of L connects the second of R
The 5th interface 19 of interface 16, L and R are respectively connected to the both ends of hydraulic cylinder.
As shown in Figure 8, Figure 9, it is the hydraulic control flat valve hydraulic oil forward direction of the present invention and reverse flow graph.The hydraulic control of the present invention
There are two types of operating modes altogether according to the working method of hydraulic pump for flat valve.In order to express easily, note L1 to L5, R1 to R5 distinguish table
Show 15 to the 5th interface 19 of first interface of L, R.
When hydraulic pump forward direction works, as shown in figure 8, high pressure oil enters from L1 mouthfuls in L, the slide valve lever 8 of L moves up to
Valve seat 6 limit (26 end face 32 of limiting stand is contacted with the second taper hole 36), at this time mandril 37 by steel ball 5 open-top, the high pressure from valve seat 6
Oil is flowed out from L2 mouthfuls, and into R4 mouthfuls, the steel ball 5 in R is pushed upwardly a certain distance under the action of high pressure oil, enters stifled
In first 1 spring eye, then high pressure oil is flowed out from R5, into hydraulic cylinder, pushes hydraulic cylinder piston positive movement；The piston other end
Low-pressure hydraulic oil enter in L from L5 along oil circuit, after passing through lock hole 34, enter in third oil-through hole 30 from axis side opening 31,
Then it is flowed out from L3 mouthfuls, by returning to R1 mouthfuls, before low pressure oil flows into hydraulic pump after the second bypass check valve 13, completes positive work
Cycle.
When hydraulic pump is inversely pressurized, as shown in figure 9, high pressure oil enters from R1 mouthfuls, the slide valve lever 8 of R moves up to valve
Seat 6 limits, 37 open-top steel ball 5 of mandril, and high pressure oil is flowed out from R2 mouthfuls, and into L4 mouthfuls, the steel ball 5 in L is under the action of high pressure oil
Certain distance is jacked up upwards, and high pressure oil is then flowed out from L5, into hydraulic cylinder, pushes piston reverses direction movement；The piston other end
Low-pressure hydraulic oil enters from R5 mouthfuls in R along oil circuit, after passing through lock hole 34, enters in third oil-through hole 30 from axis side opening 31,
Then it flows out from R3 mouthfuls, by returning to L1 mouthfuls, before low pressure oil flows into hydraulic pump after the first bypass check valve 11, completes reversely operated
Cycle, hydraulic cylinder piston is toward counter motion.
Claims (9)
1. a kind of hydraulic control flat valve, including two five logical hydraulic locks, which is characterized in that two five logical hydraulic locks include valve
Body (4), valve body (4) side wall upper edge are parallel to valve body (4) and are axially disposed with first interface (15) to the 5th interface (19), valve
Two parts up and down are divided by valve seat (6) in body (4), the steel ball (5) of position-adjustable is provided in upper part, is set in lower part
Be equipped with the bushing (9) with sliding chamber (33), be equipped in the sliding chamber (33) can along valve body (4) slide valve lever (8) in axial sliding,
Wherein：
The first interface (15) is connected to the cunning chamber (33) to the 4th interface (18), on the slide valve lever (8)
The first oil-through hole (28) is radially arranged at intervals with to third oil-through hole (30), it is small that one end of slide valve lever (8) is provided with diameter
Mandril (37) in slide valve lever (8) is provided with the limiting stand (26) that length is less than mandril (37) on the outer wall of mandril (37), from limiting
The end face (32) of position platform (26) is provided with axis side opening (31) into the third oil-through hole (30)；The slide valve lever (8) it is another
Hold the axial hole (27) that the first oil-through hole of connection (28) and the second oil-through hole (29) are provided with along its axial direction；The valve seat (6)
On offer lock hole (34), the mandril (37) may pass through lock hole (34) and be contacted with the steel ball (5)；Described
5th interface (19) is connected to the lock hole (34).
2. hydraulic control flat valve as described in claim 1, which is characterized in that it is provided with plug (1) above the valve seat (6),
There is gap between plug (1) and valve seat (6)；Plug (1) lower surface axially offers diameter along plug (1) more than described
The spring eye of steel ball (5) is equipped with self-locking spring (2) in spring eye, and the lower end of self-locking spring (2) connects with the steel ball (5)
It touches；The outer cover of the mandril (37) is equipped with resetting spring (7), the following table of one end and the valve seat (6) of resetting spring (7)
Face contacts, and the other end of resetting spring (7) is contacted with the end face (32) of the slide valve lever (8).
3. hydraulic control flat valve as described in claim 1, which is characterized in that the first oil-through hole (28) on the slide valve lever (8)
The diameter of part is less than the diameter of rest part on slide valve lever (8) between the other end of the slide valve lever (8).
4. hydraulic control flat valve as described in claim 1, which is characterized in that be located at the first oil-through hole on the slide valve lever (8)
(28) it is both provided with labyrinth sealing slot group between the second oil-through hole (29), between third oil-through hole (30) and mandril (37).
5. hydraulic control flat valve as described in claim 1, which is characterized in that the internal cunning chamber (33) of the bushing (9) is two
Penetrating and sizing cavity, bushing (9) outer wall upper edge is held to be parallel to bushing (9) and be axially disposed with the first oil guiding hole (21) extremely
4th oil guiding hole (24), first oil guiding hole (21) to the 4th oil guiding hole (24) divide along the circumferencial direction of bushing (9)
Cloth is multiple.
6. hydraulic control flat valve as described in claim 1, which is characterized in that the lock hole (34) is on valve seat (6)
The hole of lower surface, lock hole (34) include superposed first taper hole (35) and the second taper hole (36) positioned at lower part, and
One taper hole (35), the second taper hole (36) are connected to by connecting hole；The maximum inner diameter of first taper hole (35) is less than the steel ball
(5) diameter.
7. hydraulic control flat valve as described in claim 1, which is characterized in that it is penetrating that the valve body (4) is internally provided with both ends
Centre bore, be provided with step groove on the centre bore, the card coordinated with step groove be provided on the bushing (9) outer wall
Platform (38)；The upper end of the valve body (4) is sealed by overhead gage (3), and the plug (1) is pierced by overhead gage (3)；Described
Valve body (4) lower end is sealed by lower baffle plate (10).
8. hydraulic control flat valve as described in claim 1, which is characterized in that be arranged at intervals on the inner wall of the centre bore with
First oil guiding hole (21) is to the corresponding circumferential groove (20) in the 4th oil guiding hole (24) position.
9. hydraulic control flat valve as described in claim 1, which is characterized in that two five logical hydraulic locks are arranged two, point
It is not denoted as L and R, wherein：The first interface (15) of L and R is connected to hydraulic pump, and passes through first entrance check valve respectively
(12), second entrance check valve (14) is connected to fuel tank；The first interface (15) of L connects R by the first bypass check valve (11)
Third interface (17), the first interface (15) of R passes through the third interface (17) that the second bypass check valve (13) connects L；The of L
The 5th of the 4th interface (18) of two interfaces (16) connection R, the second interface (16) of the 4th interface (18) the connection R of L, L and R connects
Mouth (19) is respectively connected to the both ends of hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258108.9A CN108412828B (en) | 2018-03-27 | Hydraulic control flow distribution valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258108.9A CN108412828B (en) | 2018-03-27 | Hydraulic control flow distribution valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108412828A true CN108412828A (en) | 2018-08-17 |
| CN108412828B CN108412828B (en) | 2024-06-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109442061A (en) * | 2018-12-27 | 2019-03-08 | 山西双环重工集团有限公司 | Three seven port valves and stamping equipment |
| CN110513356A (en) * | 2019-09-09 | 2019-11-29 | 江西理工大学 | A kind of Kaplan oil circuit hydraulic lock control structure |
| CN112983919A (en) * | 2021-03-31 | 2021-06-18 | 同济大学 | Large-impulse hydraulic power mechanism based on shaft flow distribution |
| CN114562558A (en) * | 2022-02-28 | 2022-05-31 | 重庆长安汽车股份有限公司 | Rotary valve and vehicle |
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| CN208587342U (en) * | 2018-03-27 | 2019-03-08 | 中国石油化工股份有限公司 | A kind of hydraulic control flat valve |
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| US5497801A (en) * | 1993-09-14 | 1996-03-12 | Mitsubishi Jukogyo Kabushiki Kaisha | Flow control valve |
| JP2013079692A (en) * | 2011-10-05 | 2013-05-02 | Shimadzu Corp | Flow rate control valve |
| CN105275484A (en) * | 2014-07-14 | 2016-01-27 | 巨隆集团芜湖兴隆液压有限公司 | Hydraulic control one-way valve |
| CN205744643U (en) * | 2016-05-05 | 2016-11-30 | 四川重汽王牌兴城液压件有限公司 | Constant voltage self-locking derrick crane hydraulic lifting system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442061A (en) * | 2018-12-27 | 2019-03-08 | 山西双环重工集团有限公司 | Three seven port valves and stamping equipment |
| CN110513356A (en) * | 2019-09-09 | 2019-11-29 | 江西理工大学 | A kind of Kaplan oil circuit hydraulic lock control structure |
| WO2021047162A1 (en) * | 2019-09-09 | 2021-03-18 | 赣州黄金沃特发电设备有限公司 | Hydraulic lock control structure for rotating blade oil passage |
| CN112983919A (en) * | 2021-03-31 | 2021-06-18 | 同济大学 | Large-impulse hydraulic power mechanism based on shaft flow distribution |
| CN114562558A (en) * | 2022-02-28 | 2022-05-31 | 重庆长安汽车股份有限公司 | Rotary valve and vehicle |
| CN114562558B (en) * | 2022-02-28 | 2024-06-04 | 重庆长安汽车股份有限公司 | Rotary valve and vehicle |
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