CN101571176B - Plate valve - Google Patents
Plate valve Download PDFInfo
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- CN101571176B CN101571176B CN2008100943433A CN200810094343A CN101571176B CN 101571176 B CN101571176 B CN 101571176B CN 2008100943433 A CN2008100943433 A CN 2008100943433A CN 200810094343 A CN200810094343 A CN 200810094343A CN 101571176 B CN101571176 B CN 101571176B
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- valve
- valve seat
- mentioned
- spiral chute
- valve body
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Abstract
The invention provides a plate valve. A platy valve body (16) and annular valve seats (17, 20) for placing the valve (16) form a one-way valve (10) used in a hydraulic buffer (1); a plurality of circles of vortex-shaped spiral grooves (17b, 20b) are formed on a placing surface of the value body (1) of the valve seats (17, 20); the spiral grooves (17b, 20b) are respectively opened at the inner sideand the outer side of the valve seat (17); the width of the spiral grooves (17b, 20b) is set into the width that is larger than the width of walls (17a, 20a) which are adjacent to the spiral grooves (17b, 20b); thus, when the valve body (16) ascends from the valve seats (17, 20), enough working oil is supplied to peeling parts of the valve body (16) and the valve seats (17, 20) from the spiral grooves (17b, 20b) so that the impact sound along with the peeling can be prevented.
Description
Technical field
The present invention relates to a kind of plate valve that when the hydraulic bjuffer that is used for rail truck etc. prevents that being assembled in its inner plate valve opens, produces extraordinary noise.
Background technique
The one-way valve that is assembled in the hydraulic bjuffer for example makes the valve body of circular plate shape fall to being positioned on the valve seat of ring-type.
The hydraulic pressure of the inboard hollow portion of the valve seat of ring-type acts on the valve body as cracking pressure, because this cracking pressure is greater than the hydraulic pressure that acts on the valve body back side, so valve body rises and opens one-way valve from valve seat.The application target of the one-way valve of this spline structure is that for example the piston in being contained in cylinder makes working oil not flow in the cylinder from the oily reservoir in the cylinder outside by resistance ground when elongate sides is moved.
Be used for the large hydraulic buffer of rail truck etc., the action of the one-way valve of this structure is the main cause that produces extraordinary noise.
That is, when cut-off valve, valve body is subjected to the adsorption force effect that the viscosity because of oil causes and is in the state that is attracted on the valve seat.In addition, to act on the one-way valve of blocked state for example be to change under the such situation of stroke directions at piston to carry out to cracking pressure.That is, in most cases, cracking pressure is not slowly to rise, but sharply acts on the one-way valve.
If making valve body and valve seat instantaneous valve body and the valve seat of drawing back under the oil film state of contact, then can produce negative pressure because of peeling off in the space that is being formed between valve body and the valve seat.On the one hand, this negative pressure can postpone valve body to be peeled off from valve seat, on the other hand, from the moment that valve seat rises, can bring bigger variation in pressure at valve body to released part.
This variation in pressure makes the piston rod of buffer, urceolus produce resonance, thereby produces Strike note.
Summary of the invention
Therefore, the objective of the invention is to, prevent to follow the opening action that is used for the plate valve on the hydraulic bjuffer and produce Strike note.
In order to reach above purpose, the plate valve that is used on the hydraulic bjuffer of the present invention has tabular valve body, feed valve fall the multi-circle spiral flow groove on the plane of valve seat, the valve body that is formed at valve seat of ring-type of position that falls with being vortex shape, the spiral fluted two ends are respectively in the inboard and the outer openings of valve seat, and spiral fluted width b is set at width a greater than the wall adjacent with spiral chute.
Detailed content of the present invention and other features, advantage will describe in the following record of specification, and be shown in the accompanying drawing.
Description of drawings
Fig. 1 is the longitudinal section that the major component of hydraulic bjuffer of the present invention has been used in expression.
Fig. 2 is the plan view of expression valve seat of the present invention.
The sectional view of the major component of Fig. 3 valve seat that to be expression dissect along the III-III line of Fig. 2.
Fig. 4 and Fig. 3 are similar, and a situation arises but expression is because of the problem that produces of cutting spiral chute.
Embodiment
With reference to accompanying drawing Fig. 1, used hydraulic bjuffer 1 of the present invention to have cylinder 3, this cylinder 3 vertically is arranged in the urceolus 2 coaxially.Be divided into grease chamber, top and grease chamber, below 4 by not shown piston in the cylinder 3.In these grease chambeies, enclose respectively working oil is arranged.In addition, between urceolus 2 and cylinder 3, be provided with the oily reservoir 5 that stores working oil.
The slip of the piston in 1 pair of cylinder of hydraulic bjuffer 3 produces damping force.Be provided with the slip according to piston is circulated working oil between grease chamber 4 and oily reservoir 5 seat valve 6 in the bottom of cylinder 3.
Bottom at cylinder 3 has marked off space 11 by valve disc 7.Space 11 always is connected with oily reservoir 5 by being formed at the otch 12 on the valve disc.
Be formed with many paths 13 on valve disc 7, these paths 13 are with the working oil guiding one-way valve 10 in space 11.Under the state of the end on observation of cylinder 3, path 13 is along the outer circumference configuration of bolt 8, and connects valve disc 7 respectively.
Be formed with many paths 15 in the inboard of path 13, these paths 15 are with the working oil guiding compressed side orifice valve 9 of grease chamber 4.Under the state of the end on observation of cylinder 3, path 15 is along the configuration of the circumference between path 13 and bolt 8, and connects valve disc 7 respectively.
Compressed side orifice valve 9 is arranged on facing in the outlet in space 11 of path 15.Compressed side orifice valve 9 is made of leaf valve.Leaf valve is made of the overlapping blade of multi-disc, and the hydraulic pressure of path 15 makes the hydraulic pressure in space 11 rise to authorized pressure when above, then makes the peripheral part of leaf valve that resiliently deformable takes place downwards, makes the working oil of grease chamber 4 flow to oily reservoir 5 by space 11 from path 15.Circulating resistance in the time of thus produces the compressed side damping force.
One-way valve 10 is arranged on facing in the outlet of grease chamber 4 of path 13.One-way valve 10 has with the valve body 16 of the periphery tabling of nut 14, be formed at the valve seat 17 for the ring-type of the periphery clan position of valve body 16 on the valve disc 7, be formed at the valve seat 20 for the ring-type of all clans positions in the valve body 16 on the valve disc 7, be used for the Returnning spring 18 to valve seat 17 and valve seat 20 yielding support valve bodies 16.Valve seat 17 and valve seat 20 are formed on the valve disc 7 coaxially.Between valve seat 17 and valve seat 20, be formed with the slot part 21 of ring-type.Path 13 is at the interior side opening of slot part 21.
On nut 14, be formed with stepped part 14a.Valve body 16 is made of the plate valve of circle, and this circular plate valve can be supported in the below periphery of the stepped part 14a of nut 14 with being free to slide.Returnning spring 18 is made of helical spring.The cardinal extremity of Returnning spring 18 is supported on the stepped part 14a, and its front end and valve body 16 connect.Stepped part 14a also has the effect as the stop member of the displacement more than the specified degree of limiting valve body 16.On valve body 16, be formed with intercommunicating pore 19, the connection between the path 15 that this intercommunicating pore 19 is used to guarantee grease chamber 4 and pass to compressed side orifice valve 9.
In the one-way valve 10 under opening the state of valve, valve body 16 is subjected to the adsorption force effect that the viscosity because of oil produces and is in the state that is attracted on valve seat 17 and the valve seat 20.Piston in being housed in cylinder 3 is when retraction stroke is transformed into extended travel, and the one-way valve 10 under the blocked state is subjected to the cracking pressure effect.Because the variation of the stroke directions of piston takes place at short notice, therefore, the pressure rapid change of grease chamber 4, the cracking pressure of one-way valve 10 sharply rises thereupon.Between valve body 16 and valve seat 17 and valve seat 20 under the oil film state of contact, when cracking pressure with valve body 16 on valve seat 17 and valve seat 20 during instantaneous drawing back, producing negative pressure because of peeling off in the valve body 16 that produces and the gap between valve seat 17 and the valve seat 20.On the one hand, this negative pressure has postponed valve body 16 to be peeled off from valve seat 17 and valve seat 20, on the other hand, from the moment that valve seat 17 and valve seat 20 rises, can bring bigger variation in pressure at valve body 16 to released part.When this variation in pressure makes the piston rod of hydraulic bjuffer 1, when urceolus 2 produces resonance, just can produce Strike note.
With reference to Fig. 2, successfully peel off in order when driving valve, to make valve body 16 from valve seat 17 and valve seat 20, one-way valve 10 of the present invention has spiral chute 17b and spiral chute 20b, this spiral chute 17b be formed at valve seat 17 with valve body 16 outer circumferential face facing surfaces, this spiral chute 20b be formed at valve seat 20 with valve body 16 inner peripheral surface facing surfaces.
With reference to Fig. 3, make the width of the width b of spiral chute 17b greater than the part that does not form spiral chute 17b, in other words, promptly greater than the width a of the wall 17a of valve seat 17.In addition, make the width a of wall 17a greater than zero.That is, make wall 17a have the part on plane.If represent then to be shown below with representation.
b＞a＞0
To spiral chute 20b also and spiral chute 17b similarly set between the width b of the width a of wall 20a and spiral chute 20b relation.
In theory, also can make the width a of wall 17a, wall 20a is zero.With reference to Fig. 4, on the surface of cutting valve seat 17, valve seat 20, when forming spiral chute 17b, spiral chute 20b, be zero if make the width a of wall 17a, wall 20a, then cutting the result is that residual wall 17a, the height of wall 20a can't be for constant because of machining error.Therefore, in practice, the width a of wall 17a, wall 20a need be set at value greater than zero.
When forming valve seat 17 and valve seat 20 as described above, under the valve body 16 as plate valve fell to being positioned at state on valve seat 17 and the valve seat 20, spiral chute 17b and spiral chute 20b always were full of working oil.Therefore, at piston from retraction stroke during to extended travel transition shift direction, even cracking pressure sharply acts on valve body 16, be trapped in working oil among spiral chute 17b and the spiral chute 20b and also can be supplied directly onto release surface between valve body 16 and valve seat 17 and the valve seat 20.Therefore, can not produce negative pressure by the gap between the valve body 16 of peeling off generation and valve seat 17 and the valve seat 20,16 ones of valve bodies are successfully risen from valve seat 17 and valve seat 20 by resistance ground.Its result can prevent that hydraulic bjuffer from following the rising of valve body 16 and produce the phenomenon of Strike note.
As mentioned above, the width b by making spiral chute 17b and spiral chute 20b can make spiral chute 17b and spiral chute 20b store more working oil greater than the width a of wall 17a and wall 20a.On the other hand, the width b by making spiral chute 17b and spiral chute 20b is greater than the width a of wall 17a and wall 20a, reduced the area that valve body 16 is peeled off from valve seat 17 and valve seat 20.Therefore, by this qualification, when valve seat 17 and valve seat 20 are peeled off, can supply with working oil to release surface fully at valve body 16.
In addition, spiral chute 17b and spiral chute 20b rotate a few and form on the seat surface of valve seat 17 and valve seat 20.For example, if spiral chute 17b or spiral chute 20b only form 1 circle, even then one-way valve 10 is in blocked state, grease chamber 4 and space 11 also can be connected by spiral chute 17b or spiral chute 20b, when 4 pressure were higher than space 11 pressure in the grease chamber, one-way valve 10 just can not stop working oil 4 to flow to space 11 from the grease chamber.That is, diminish the effect that prevents adverse current of one-way valve 10.
Therefore,, oil can not be circulated by spiral chute 17b or spiral chute 20b for when the inaccessible one-way valve 10, preferably spiral chute 17b and spiral chute 20b are all set long enough.Therefore, need on valve seat 17 and valve seat 20, be formed up to minority circle spiral chute 17b and spiral chute 20b respectively.
In addition, in above embodiment, valve seat 17 is equivalent to the 1st valve seat, and valve seat 20 is equivalent to the 2nd valve seat.
As mentioned above, adopt the present invention, prevented to follow the opening action of the plate valve that is used for hydraulic bjuffer and the generation of the Strike note that produces with simple structure.Therefore, the present invention prevents to produce when piston conversion stroke directions and brings good especially effect aspect the bigger Strike note especially in the large hydraulic buffer that rail truck is used.
More than, by certain embodiments the present invention has been described, but the present invention is not limited to the foregoing description.To those skilled in the art, can in the technical scope of claim, carry out various modifications or change to these embodiments.
For example, in the above-described embodiments, plate valve of the present invention has been applied in the one-way valve 10 on the seat valve of being located in the hydraulic bjuffer 16.Certainly, plate valve of the present invention also can be applied to be located in the one-way valve on the piston of hydraulic bjuffer 1.
Exclusive character that embodiments of the invention comprised or feature are as described in the claim of front.
Claims (5)
1. plate valve, it is used for hydraulic bjuffer (1); Wherein,
This plate valve has valve seat (17,20), the spiral chute (17b, 20b) of tabular valve body (16), ring-type,
This valve seat (17,20) is for above-mentioned valve body (16) position that falls,
This spiral chute (17b, 20b) forms a few with swirl shape on the above-mentioned valve body (16) of above-mentioned valve seat (17,20) falls plane;
The two ends of above-mentioned spiral chute (17b, 20b) are respectively in the inboard and the outer openings of above-mentioned valve seat (17,20);
The width b of above-mentioned spiral chute (17b, 20b) is set at width a greater than the wall (17a, 20a) adjacent with above-mentioned spiral chute (17b, 20b).
2. plate valve according to claim 1, wherein, the width of all above-mentioned walls (17a, 20a) that will be adjacent with above-mentioned spiral chute (17b, 20b) is set at greater than zero.
3. plate valve according to claim 1, wherein, this plate valve performance is as the effect of one-way valve (10).
4. plate valve according to claim 3, wherein, above-mentioned one-way valve (10) also has towards the Returnning spring (18) of above-mentioned valve seat (17,20) to above-mentioned valve body (16) application of force.
5. according to each described plate valve in the claim 1～4, wherein, the above-mentioned valve seat of ring-type (17,20) has first valve seat (17) and second valve seat (20), this first valve seat (17) is for the periphery clan position of above-mentioned valve body (16), and this second valve seat (20) is for interior all clans position of above-mentioned valve body (16); Plate valve has ring-type slot part (21) and path (13), the slot part of this ring-type (21) is formed between above-mentioned first valve seat (17) and above-mentioned second valve seat (20), this path (13) is at above-mentioned slot part (21) opening, falls to being positioned at above-mentioned first valve seat (17) and above-mentioned second valve seat (20) the inaccessible above-mentioned path (13) that comes up by making above-mentioned valve body (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100943433A CN101571176B (en) | 2008-04-28 | 2008-04-28 | Plate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100943433A CN101571176B (en) | 2008-04-28 | 2008-04-28 | Plate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101571176A CN101571176A (en) | 2009-11-04 |
| CN101571176B true CN101571176B (en) | 2011-01-19 |
Family
ID=41230614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100943433A Expired - Fee Related CN101571176B (en) | 2008-04-28 | 2008-04-28 | Plate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101571176B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10221911B2 (en) | 2016-07-19 | 2019-03-05 | Beijingwest Industries Co., Ltd. | Twin-tube hydraulic damper with a vibration suppressing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055105U (en) * | 1989-01-13 | 1990-03-28 | 罗良祖 | Oil leakless vehicle shock absorber |
| CN1499101A (en) * | 2002-10-31 | 2004-05-26 | �泡��ҵ��ʽ���� | Damp force generating valve of hydraulic damper |
| DE10351357B3 (en) * | 2003-11-04 | 2005-02-24 | Zf Friedrichshafen Ag | Fluid resistance valve for use in vibration damper has valve flaps pushed down onto plate with holes or parallel against Belleville washer to allow flow of fluid through holes |
| CN2736598Y (en) * | 2004-05-31 | 2005-10-26 | 深圳市中车业成实业有限公司 | Foot valve assembly for vehicle vibration isolator |
-
2008
- 2008-04-28 CN CN2008100943433A patent/CN101571176B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055105U (en) * | 1989-01-13 | 1990-03-28 | 罗良祖 | Oil leakless vehicle shock absorber |
| CN1499101A (en) * | 2002-10-31 | 2004-05-26 | �泡��ҵ��ʽ���� | Damp force generating valve of hydraulic damper |
| DE10351357B3 (en) * | 2003-11-04 | 2005-02-24 | Zf Friedrichshafen Ag | Fluid resistance valve for use in vibration damper has valve flaps pushed down onto plate with holes or parallel against Belleville washer to allow flow of fluid through holes |
| CN2736598Y (en) * | 2004-05-31 | 2005-10-26 | 深圳市中车业成实业有限公司 | Foot valve assembly for vehicle vibration isolator |
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| Publication number | Publication date |
|---|---|
| CN101571176A (en) | 2009-11-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan, Japan Patentee after: KAYABA INDUSTRY CO LTD Address before: Tokyo, Japan, Japan Patentee before: Kayaba Industry Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110119 Termination date: 20210428 |
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| CF01 | Termination of patent right due to non-payment of annual fee |