CN205654630U - Antihunting valve - Google Patents
Antihunting valve Download PDFInfo
- Publication number
- CN205654630U CN205654630U CN201620160554.2U CN201620160554U CN205654630U CN 205654630 U CN205654630 U CN 205654630U CN 201620160554 U CN201620160554 U CN 201620160554U CN 205654630 U CN205654630 U CN 205654630U
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- Prior art keywords
- valve
- oil duct
- spool
- valve body
- oil
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- Withdrawn - After Issue
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Abstract
The utility model provides an antihunting valve, including the valve piece, first installation cavity, the second installation cavity, firstly prevent putting valve F1 and second and prevent putting valve F2, firstly prevent putting valve F1 and second to prevent putting valve F2 be the same hydrovalve, firstly prevent putting valve F1 and include the valve body, bottom spool and last case, on the bottom spool under lieing in the bottom spool damping unit, sliding spool chamber and the poppet spring down of tip, lie in the sliding spool in sliding spool chamber, offered ooff valve S on the sliding spool, the valve body lower extreme is equipped with the spool chamber, the disk seat chamber, and the ring channel oil duct include still on the valve body that it gets through the draining oil duct of valve body terminal surface to link to each other the other end with the ring channel oil duct with the 2nd communicating auxiliary oil cylinders way of spool chamber, one end, and the draining oil duct communicates with each other with the 2nd auxiliary oil cylinders way, go up the case and include valve core oil way, go up poppet spring, second damping hole C. The utility model provides an antihunting valve has improved the valve body structure, makes valve body part quantity less relatively, and the structure is simple relatively, and it is more easy to process.
Description
Technical field
This utility model relates to engineering machinery field, more specifically, relates to one and prevents oscillatory valve.
Background technology
At present, on excavator, hydraulic rotary motor is during braking, the compression shock brought due to inertia
And pressure oscillation can cause the positive and negative alternating movement of hydraulic motor moment, this moment is positive and negative is alternately rotated meeting
Cause hydraulic system to fluctuate, thus greatly reduce the maneuvering performance of excavator revolution, in some instances it may even be possible to can damage
Other hydraulic unit of system, causes excavator machine life to shorten.
In prior art, on commonly used rotary motor arrange prevent oscillatory valve from eliminating, absorbing liquid pressure motor
The compression shock of actuator port, it is ensured that the revolution of excavator complete machine reaches the effect steadily stopped.But, existing
Prevent that oscillatory valve number of parts is more, must comprise and prevent converse mechanism or one-way valve structures, overall knot
Structure is complicated, and difficulty of processing is big.
Therefore it provides one prevents oscillatory valve, improve valve body structure, make valve body piece quantity relatively fewer,
Structure is relatively easy, and it is the easiest to process, and is problem to be solved in the utility model.
Utility model content
Technical problem to be solved in the utility model is, it is provided that one prevents oscillatory valve, improves valve body knot
Structure, makes valve body piece quantity relatively fewer, and structure is relatively easy, and it is the easiest to process.
In view of this, this utility model provides one and prevents oscillatory valve, including valve block 1, described valve block 1
Including the first side hydraulic fluid port A；Second side hydraulic fluid port B；The the first connection oil being connected with described first side hydraulic fluid port A
Road A1；The the second connection oil duct B1 being connected with described second side hydraulic fluid port B；It is connected oil duct with described first
The first installation cavity 11 that A1 connects；The second installation cavity 12 that oil duct B1 connects it is connected with described second；Point
It is not installed on the first anti-sway valve F1 and second in described first installation cavity 11 and described second installation cavity 12
Anti-sway valve F2, described first anti-sway valve F1 and described second anti-sway valve F2 are identical hydraulic valve, described
First anti-sway valve F1 includes valve body 2, is positioned at the bottom spool 31 of described valve body 2 lower end and is positioned at described valve body
The upper valve core 32 of 2 upper ends, described bottom spool 31 includes the damping list being positioned at described bottom spool 31 bottom
Unit 310, guiding valve core cavity 30 and bottom spool spring 33, be positioned at the sliding spool 34 of described guiding valve core cavity 30,
Switch valve S is offered, with described valve opening 37 corresponding for switch valve S on described sliding spool 34；Described valve body
2 lower ends are provided with spool chamber 21, the valve support chamber 22 being connected with described spool chamber 21, with described valve support chamber 22
The cannelure oil duct 221 being connected, described valve body 2 also includes communicate with described spool chamber 21 second is auxiliary
Oil duct 24, one end other end that is connected with described cannelure oil duct 221 is helped to get through letting out of described valve body 2 end face
Oil oil duct 222, and described draining oil duct 222 communicates with described second auxiliary oil channel 24；Described upper valve core
32 include upper valve core oil duct 323, upper valve core spring 35, and one end communicates separately with described upper valve core oil duct 323
One end extends to the second damping hole C of described upper valve core 32 end face；At described first side hydraulic fluid port A with described
The first pressure release oil duct A2 it is further opened with between second installation cavity 12；At described second side hydraulic fluid port B with described
The second pressure release oil duct B2 it is further opened with between first installation cavity 11；At described valve body 2 near described bottom spool
The end of 31 is provided with screw plug 4.
Preferably, described switch valve S includes switch valve oil duct 342 and the 3rd auxiliary oil channel 341, described
Three auxiliary oil channel 341 one end are connected with described switch valve oil duct 342, and the other end gets through described sliding spool 34
Bottom, described switch valve oil duct 342 is corresponding with described valve opening 37.
Preferably, described switch valve oil duct 342 also includes the annular oil storage end being positioned on described sliding spool 34
Portion.
Preferably, described damping unit 310 includes the first auxiliary oil being positioned at described bottom spool 31 bottom
Road 315, the first damping hole 316 being connected with described first auxiliary oil channel 315.
Preferably, described sliding spool 34 also includes first annular oil storage tank N.
Preferably, described upper valve core 32 includes the second annular oil storage tank P.
Preferably, the spring rate of described bottom spool spring 33 is firm more than the spring of described upper valve core spring 35
Degree.
Preferably, described first anti-sway valve F1 also includes being sleeved on described valve body 2 outside, one end with described
One end face of valve body 2 abuts the rubber gasket that one end abuts with the cross section within described first oil duct A1
6。
Preferably, described first installation cavity 11 also includes the second annular oil groove 111.
Preferably, described valve body 2 also includes valve body external screw thread 20, described valve block 1 also includes interior spiral shell
Stricture of vagina 10, described valve body external screw thread 20 mates with described female thread 10.
What this utility model provided prevents oscillatory valve, improves valve body structure, makes valve body piece quantity relatively
Few, structure is relatively easy, and it is the easiest to process.
Accompanying drawing explanation
Fig. 1 is that this utility model is provided the structural representation preventing oscillatory valve one embodiment；
Fig. 2 is that this utility model shown in Fig. 1 is provided the structural representation preventing oscillatory valve valve block one embodiment
Figure；
Fig. 3 is that this utility model shown in Fig. 1 is provided the structural representation preventing oscillatory valve one embodiment；
Fig. 4 is that this utility model shown in Fig. 1 is provided the structural representation preventing oscillatory valve valve body one embodiment
Figure；
Fig. 5 is that this utility model shown in Fig. 1 is provided the structure preventing oscillatory valve core assembly one embodiment
Schematic diagram；
Fig. 6 is that this utility model shown in Fig. 1 is provided the structure preventing oscillatory valve bottom spool one embodiment to show
It is intended to；
Fig. 7 is that this utility model shown in Fig. 1 is provided the structure preventing oscillatory valve upper valve core one embodiment to show
It is intended to；
Fig. 8 is that this utility model shown in Fig. 1 is provided the structure preventing oscillatory valve sliding spool one embodiment to show
It is intended to.
Wherein, in Fig. 1 to 8, corresponding relation between reference and component names is:
1 valve block；10 female threads；11 first installation cavitys；111 second annular oil grooves；12 second install
Chamber；2 valve bodies；20 valve body external screw threads；21 spool chambers；211 spacing planes；22 valve support chamber；221 rings
Shape groove oil duct；222 drain path；23 valve seat cavity of resorptions；24 second auxiliary oil channels；3 core assemblies；30
Guiding valve core cavity；31 bottom spools；311 lower valve bases；312 lower valve rods；313 lower valve rod cavitys；314 times
Spool oil duct；315 first auxiliary oil channels；316 first damping holes；32 upper valve cores；321 upper valve bases；
322 upper valve rods；323 upper valve core oil ducts；324 upper valve rod chambeies；325 annular guide brackets；33 bottom spool bullets
Spring；34 sliding spools；341 the 3rd auxiliary oil channels；342 switch valve oil ducts；343 ring shaped oil passages；On 35
Valve core spring；36 pads；37 valve openings；4 screw plugs；5 sealing rings；6 rubber gaskets.
Detailed description of the invention
With embodiment, this utility model is described further below in conjunction with the accompanying drawings.It should be noted that not
In the case of conflict, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding this utility model, but,
This utility model can be different from other modes described here with employing to be implemented, therefore, and this utility model
Protection domain do not limited by following public specific embodiment.
This utility model provides one and prevents oscillatory valve, and including valve block 1, described valve block 1 includes the first side
Hydraulic fluid port A；Second side hydraulic fluid port B；The the first connection oil duct A1 being connected with described first side hydraulic fluid port A；With institute
State the second connection oil duct B1 that the second side hydraulic fluid port B connects；Be connected with described first that oil duct A1 connects the
One installation cavity 11；The second installation cavity 12 that oil duct B1 connects it is connected with described second；It is respectively arranged in institute
State the first anti-sway valve F1 in the first installation cavity 11 and described second installation cavity 12 and the second anti-sway valve F2,
Described first anti-sway valve F1 and described second anti-sway valve F2 is identical hydraulic valve, described first anti-sway valve
F1 includes valve body 2, is positioned at the bottom spool 31 of described valve body 2 lower end and is positioned at the upper of described valve body 2 upper end
Spool 32, described bottom spool 31 includes the damping unit 310 being positioned at described bottom spool 31 bottom；Sliding
Spool chamber 30 and bottom spool spring 33, be positioned at the sliding spool 34 of described guiding valve core cavity 30, described sliding spool
Switch valve S is offered, with described valve opening 37 corresponding for switch valve S on 34；Described valve body 2 lower end is provided with
Spool chamber 21, the valve support chamber 22 being connected with described spool chamber 21, the annular being connected with described valve support chamber 22
Groove oil duct 221, described valve body 2 also includes the second auxiliary oil channel 24 communicated with described spool chamber 21；
One end other end that is connected with described cannelure oil duct 221 gets through the draining oil duct 222 of described valve body 2 end face,
And described draining oil duct 222 communicates with described second auxiliary oil channel 24；Described upper valve core 32 includes upper valve core
Oil duct 323, upper valve core spring 35, one end communicates the other end and extends to described with described upper valve core oil duct 323
Second damping hole C of upper valve core 32 end face；At described first side hydraulic fluid port A and described second installation cavity 12
Between be further opened with the first pressure release oil duct A2；At described second side hydraulic fluid port B and described first installation cavity 11
Between be further opened with the second pressure release oil duct B2；Arrange near the end of described bottom spool 31 at described valve body 2
There is screw plug 4.
What this fact Example was provided prevent, and the operation principle of oscillatory valve from being:
Assume that the first side hydraulic fluid port A and the second side hydraulic fluid port B is the actuator port of hydraulic motor, the first side hydraulic fluid port
A is oil-out, and the second side hydraulic fluid port B is oil-in:
When normally working, B mouth pressure oil connects oil duct B1, upper valve core oil duct 323, bottom spool oil along second
Road 314 enters hydraulic pressure chamber G, overcome upper valve core spring 35 and bottom spool spring 33 promote bottom spool 31 to
Move down, upper valve core 32 also with the movement of bottom spool 31 to moving down, upper valve core 32 is fitted with bottom spool 31,
Ensure that the first side hydraulic fluid port A and the second side hydraulic fluid port B is not communicated with；B mouth pressure oil along the second pressure release oil duct B2,
Drain path the 222, second auxiliary oil channel 24 enters bottom spool 31 cavity of resorption, is entered by damping unit 310
Bottom spool 31 epicoele, overcome upper valve core spring 35 and bottom spool spring 33 promote bottom spool 31 to moving down,
Upper valve core 32 also with the movement of bottom spool 31 to moving down, upper valve core 32 is fitted with bottom spool 31, it is ensured that
Side hydraulic fluid port A and the second side hydraulic fluid port B is not communicated with, and hydraulic motor can normally use.
When sudden shutting off the first side hydraulic fluid port A, the second side hydraulic fluid port B working oil, stopping is transported by hydraulic motor
Turning, but hydraulic motor may proceed to operating due to inertia, now hydraulic motor becomes the work of pump principle, correspondingly
First side hydraulic fluid port A becomes pressure oil port, and now the compression shock of the first side hydraulic fluid port A is very big, and now first
Side hydraulic fluid port A pressure is more than the second side hydraulic fluid port B pressure, for making spool have the normal rate of decay, increases
I.e. can open on sliding spool 34 according to the selection mechanism of first and second side hydraulic fluid port A, B pressure change
If switch valve S, the first side hydraulic fluid port A pressure oil along first connect oil duct A1, upper valve core oil duct 323, under
Spool oil duct 314 enters hydraulic pressure chamber G, and sliding spool 34 moves to leftmost bit, so upper and lower by bottom spool 31
Chamber is linked up, and on bottom spool 31, the first damping hole 316 is inoperative, overcomes upper valve core spring 35 and bottom spool
Spring 33 promote bottom spool 31 to moving down, upper valve core 32 also with the movement of bottom spool 31 to moving down, lower valve
The movement of core 31 can absorb a part of compression shock, during the first side hydraulic fluid port A pressure declines,
The astern speed of bottom spool 31 is more than the astern speed of upper valve core 32, and bottom spool 31 disengages with upper valve core 32,
First side hydraulic fluid port A fluid is let out to the second side hydraulic fluid port B, plays mechanism of car reversion effect on suppression excavator；
When the second side hydraulic fluid port B pressure is more than the first side hydraulic fluid port A pressure, the second side hydraulic fluid port B pressure oil is along second
Pressure release oil duct B2, drain path the 222, second auxiliary oil channel 24 enter bottom spool 31 cavity of resorption, by resistance
Buddhist nun's unit 310 enters bottom spool 31 epicoele, and sliding spool 34, due to differential pressure action, is pushed into rightmost position, lower valve
The upper and lower cavity of core 31 is closed, and on bottom spool 31, damping unit 310 works, and bottom spool 31 is towards the right side simultaneously
Mobile.During the second side hydraulic fluid port B pressure declines, due to damping unit 310 on bottom spool 31
Effect, the astern speed of bottom spool 31 is less than the astern speed of upper valve core 32, bottom spool 31 and upper valve core
32 fit always, and fluid cannot let out the first side hydraulic fluid port A from the second side hydraulic fluid port B；By above effect,
The most effectively eliminate the pressure oscillation of the first side hydraulic fluid port A, make the pressure of the first side hydraulic fluid port A steadily decline directly
Stop completely to hydraulic motor.
The technical scheme that this fact Example is provided, by arranging switch valve at bottom spool, at bottom spool and upper valve
Damping hole is all set on core, when the second side hydraulic fluid port pressure is more than the first side hydraulic fluid port pressure, by spool
Damping hole, the rate of decay moved after reducing spool, make spool close with valve seat；When the first side hydraulic fluid port pressure
During more than the second side hydraulic fluid port pressure, utilize the switch valve offered on sliding spool, reach the purpose steadily decayed,
Change the present situation that must be provided with preventing converse mechanism or check valve in prior art, simplify valve body knot
Structure, makes valve body piece quantity relatively fewer, and structure is relatively easy, and it is the easiest to process.
In technique scheme, as a kind of preferred embodiment, described switch valve S includes switch valve oil duct
342 and the 3rd auxiliary oil channel 341, described 3rd auxiliary oil channel 341 one end and described switch valve oil duct 342
Connecting, the other end gets through the bottom of described sliding spool 34, described switch valve oil duct 342 and described valve opening 37
Corresponding.
The technical scheme that this fact Example is provided, by offering porose and oil duct formation switch on bottom spool
Valve, changes the present situation that must be provided with preventing converse mechanism or check valve in prior art, simplifies valve body
Structure, makes valve body piece quantity relatively fewer, and structure is relatively easy, and it is the easiest to process.
In technique scheme, as a kind of preferred embodiment, described switch valve oil duct 342 also includes position
Annular oil storage end on described sliding spool 34.
In technique scheme, as a kind of preferred embodiment, described damping unit 310 includes being positioned at institute
State the first auxiliary oil channel 315 of bottom spool 31 bottom, be connected with described first auxiliary oil channel 315
One damping hole 316.
In technique scheme, as a kind of preferred embodiment, described sliding spool 34 also includes first
Annular oil storage tank N.
In technique scheme, as a kind of preferred embodiment, described upper valve core 32 includes the second ring
Shape oil storage tank P.
In technique scheme, as a kind of preferred embodiment, the spring of described bottom spool spring 33 is firm
Degree is more than the spring rate of described upper valve core spring 35.
In technique scheme, as a kind of preferred embodiment, described first anti-sway valve F1 also includes set
Be contained in described valve body 2 outside, one end abuts one end and described first oil duct with an end face of described valve body 2
The rubber gasket 6 that cross section within A1 abuts.
Between the first oil duct A1 and valve body, it is set with rubber gasket is possible to prevent the oil in the first oil duct A1
Clearance leakage between the outside and oil duct of valve body is gone out, and improves provided by the utility model anti-further
The only sealing property of oscillatory valve.
In technique scheme, as a kind of preferred embodiment, described first installation cavity 11 also includes the
Second ring oil groove 111.
In technique scheme, as a kind of preferred embodiment, described valve body 2 also includes the outer spiral shell of valve body
Stricture of vagina 20, described valve block 1 also includes female thread 10, described valve body external screw thread 20 and described female thread 10
Coupling.
What this utility model provided prevents oscillatory valve, improves valve body structure, makes valve body piece quantity relatively
Few, structure is relatively easy, and it is the easiest to process.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model,
For a person skilled in the art, this utility model can have various modifications and variations.All in this practicality
Within novel spirit and principle, any amendment made；Equivalent；Improve, should be included in this
Within the protection domain of utility model.
Claims (10)
1. preventing an oscillatory valve, including valve block (1), described valve block (1) includes the first side hydraulic fluid port A；Second side hydraulic fluid port B；The the first connection oil duct A1 being connected with described first side hydraulic fluid port A；The the second connection oil duct B1 being connected with described second side hydraulic fluid port B；The first installation cavity (11) that oil duct A1 connects it is connected with described first；The second installation cavity (12) that oil duct B1 connects it is connected with described second；It is respectively arranged in described first installation cavity (11) and inner the first anti-sway valve F1 of described second installation cavity (12) and the second anti-sway valve F2, described first anti-sway valve F1 and described second anti-sway valve F2 is identical hydraulic valve, described first anti-sway valve F1 includes valve body (2), it is positioned at the bottom spool (31) of described valve body (2) lower end and is positioned at the upper valve core (32) of described valve body (2) upper end, it is characterised in that:
Include on described bottom spool (31) being positioned at the damping unit (310) of described bottom spool (31) bottom, guiding valve core cavity (30) and bottom spool spring (33), it is positioned at the sliding spool (34) of described guiding valve core cavity (30), described sliding spool offers switch valve S on (34), with described valve opening (37) corresponding for switch valve S；Described valve body (2) lower end is provided with spool chamber (21), the valve support chamber (22) being connected with described spool chamber (21), the cannelure oil duct (221) being connected with described valve support chamber (22), also include on described valve body (2) that the second auxiliary oil channel (24) communicated with described spool chamber (21), one end other end that is connected with described cannelure oil duct (221) gets through the draining oil duct (222) of described valve body (2) end face, and described draining oil duct (222) communicates with described second auxiliary oil channel (24)；Described upper valve core (32) includes upper valve core oil duct (323), upper valve core spring (35), one end communicates the other end with described upper valve core oil duct (323) and extends to the second damping hole C of described upper valve core (32) end face；It is further opened with the first pressure release oil duct A2 between described first side hydraulic fluid port A and described second installation cavity (12)；It is further opened with the second pressure release oil duct B2 between described second side hydraulic fluid port B and described first installation cavity (11)；At described valve body (2), the end of described bottom spool (31) is provided with screw plug (4).
The most according to claim 1 prevent oscillatory valve, it is characterized in that, described switch valve S includes switch valve oil duct (342) and the 3rd auxiliary oil channel (341), described 3rd auxiliary oil channel (341) one end is connected with described switch valve oil duct (342), the other end gets through the bottom of described sliding spool (34), and described switch valve oil duct (342) is corresponding with described valve opening (37).
The most according to claim 2 prevent oscillatory valve, it is characterised in that described switch valve oil duct (342) also includes the annular oil storage end being positioned on described sliding spool (34).
The most according to claim 1 prevent oscillatory valve, it is characterized in that, described damping unit (310) includes the first auxiliary oil channel (315) being positioned at described bottom spool (31) bottom, the first damping hole (316) being connected with described first auxiliary oil channel (315).
The most according to claim 1 prevent oscillatory valve, it is characterised in that on described sliding spool (34), also include first annular oil storage tank N.
The most according to claim 1 prevent oscillatory valve, it is characterised in that on described upper valve core (32), include the second annular oil storage tank P.
The most according to claim 1 prevent oscillatory valve, it is characterised in that the spring rate of described bottom spool spring (33) is more than the spring rate of described upper valve core spring (35).
The most according to claim 1 prevent oscillatory valve, it is characterized in that, described first anti-sway valve F1 also includes being sleeved on described valve body (2) outside, one end abuts one end and is connected the rubber gasket (6) that the cross section within oil duct A1 abuts with described first with an end face of described valve body (2).
The most according to claim 1 prevent oscillatory valve, it is characterised in that described first installation cavity (11) also includes the second annular oil groove (111).
The most according to claim 1 prevent oscillatory valve, it is characterized in that, valve body external screw thread (20) is also included on described valve body (2), also include on described valve block (1) that female thread (10), described valve body external screw thread (20) mate with described female thread (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620160554.2U CN205654630U (en) | 2016-03-03 | 2016-03-03 | Antihunting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620160554.2U CN205654630U (en) | 2016-03-03 | 2016-03-03 | Antihunting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205654630U true CN205654630U (en) | 2016-10-19 |
Family
ID=57355439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620160554.2U Withdrawn - After Issue CN205654630U (en) | 2016-03-03 | 2016-03-03 | Antihunting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205654630U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909585A (en) * | 2016-03-03 | 2016-08-31 | 杭州力龙液压有限公司 | Anti-swing valve |
| CN109296579A (en) * | 2018-11-30 | 2019-02-01 | 杭州力龙液压有限公司 | Balanced valve and hydraulic motor |
-
2016
- 2016-03-03 CN CN201620160554.2U patent/CN205654630U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909585A (en) * | 2016-03-03 | 2016-08-31 | 杭州力龙液压有限公司 | Anti-swing valve |
| CN109296579A (en) * | 2018-11-30 | 2019-02-01 | 杭州力龙液压有限公司 | Balanced valve and hydraulic motor |
| CN109296579B (en) * | 2018-11-30 | 2024-06-07 | 杭州力龙液压有限公司 | Balance valve and hydraulic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161019 Effective date of abandoning: 20180427 |