CN103851122B - Oil-pressure damper overflow valve - Google Patents
Oil-pressure damper overflow valve Download PDFInfo
- Publication number
- CN103851122B CN103851122B CN201210522474.3A CN201210522474A CN103851122B CN 103851122 B CN103851122 B CN 103851122B CN 201210522474 A CN201210522474 A CN 201210522474A CN 103851122 B CN103851122 B CN 103851122B
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- China
- Prior art keywords
- hole
- spool
- valve
- valve seat
- matrix
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- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000011159 matrix material Substances 0.000 claims abstract description 29
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 241001484259 Lacuna Species 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
nullThe invention discloses a kind of oil-pressure damper overflow valve，Including matrix、Spool、Spring and valve seat，There is on matrix valve installing hole、Fuel feed hole and outage，Also include that valve seat guides，Valve seat guides also has guiding blind hole，Valve seat is positioned at the periphery guiding blind hole and valve seat and guides the hole wall matched in clearance of blind hole，Spool has pilot seal post and spring base，The spool of sealing column root has sealing surface，Sealing hole is also had on matrix，The two ends sealing hole communicate with valve installing hole and fuel feed hole respectively，In the valve installing hole of matrix and be positioned at and seal the Kong Yanchu in hole there is step，The pilot seal post of spool is inserted in the sealing hole of matrix and coordinates with sealing interporal lacuna，The spring base of spool and sealing surface are respectively positioned in valve installing hole，The sealing surface of spool coordinates with the step end face in the valve installing hole of matrix，Spring is positioned at valve installing hole.The Adjustment precision of the present invention is higher, and stability is high, and service life is long.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to can be used for the overflow valve of oil-pressure damper.
Background technology
Overflow valve is the important component part of oil-pressure damper, is the part of most critical in oil-pressure damper damping generation system.
Overflow valve is the core component of vibroshock, and the design of overflow valve directly affects the performance of product.The overflow valve of hydraulic damper for rolling stock can be divided into leaf spring overflow valve, face contact type overflow valve and cylindrical to coordinate guidance type overflow valve etc. at present.
Though leaf spring orifice valve and face contact type orifice valve performance are more stable, but damping force Adjustment precision is relatively low, and is not easy to safeguard.Cylindrical coordinates pilot seal formula overflow valve, although have higher Adjustment precision, but along with spool or the abrasion of matrix valve opening, the situations such as damping capacity instability such as Valve Vibration easily occurs.
Summary of the invention
It is an object of the invention to provide a kind of on the premise of ensureing higher Adjustment precision, stability is high, service life length oil-pressure damper overflow valve.
nullIn order to achieve the above object，The technical scheme is that a kind of oil-pressure damper overflow valve，Including matrix、Spool、Spring and valve seat，There is on matrix valve installing hole、Fuel feed hole and outage，Also include that valve seat guides，Valve seat guides has external thread section，External thread section coordinates with the threaded one end of the valve installing hole of matrix，Valve seat guides also has guiding blind hole，Described valve seat is positioned at the periphery guiding blind hole and valve seat and guides the hole wall matched in clearance of blind hole，Described spool has pilot seal post and spring base，The spool of sealing column root has sealing surface，Sealing hole is also had on described matrix，The two ends sealing hole communicate with valve installing hole and fuel feed hole respectively，In the valve installing hole of matrix and be positioned at and seal the Kong Yanchu in hole there is step，The pilot seal post of described spool is inserted in the sealing hole of matrix and coordinates with sealing interporal lacuna，The spring base of spool and sealing surface are respectively positioned in valve installing hole，The sealing surface of spool coordinates with the step end face in the valve installing hole of matrix，Described spring is positioned at valve installing hole，One end offsets with valve seat，The other end offsets with the spring base of spool，Initial throttle orifice is had in described spool，Overflow launder is had on the pilot seal post of spool，The notch of overflow launder communicates with fuel feed hole，The bottom of overflow launder leads to one end of initial throttle orifice，The other end of initial throttle orifice leads to valve installing hole，Valve installing hole connects with outage.
There is on the spring base of described spool the first lead, there is on valve seat the second lead, one end of spring be enclosed within the first lead of the spring base of spool and with the first lead matched in clearance, the other end of spring be enclosed within the second lead of valve seat and with the second lead matched in clearance.
There is on the spring base of described spool several axially extended slots, the bottom land of slot from the distance of center spool more than or equal to the peripheral radius of sealing surface of spool.
Described valve seat guides also has necking segment, has gap between periphery and the inwall of valve installing hole of necking segment, and the aperture of outage is connected with gap.
Technique effect: have overflow launder on the pilot seal post of the spool in the present invention, the notch of overflow launder communicates with fuel feed hole, along with progressively opening of overflow valve, overflow area the most constantly increases, in conjunction with certain spring rate and pre compressed magnitude, it is ensured that provide more accurate turbulent behavior for vibroshock；Both ends of the spring in the present invention is respectively fitted on the first lead of spool and the second lead of valve seat, it is ensured that the stability of spring；Valve seat in the present invention is positioned at the periphery guiding blind hole and valve seat and guides the hole wall matched in clearance of blind hole, therefore, relative to single fixing valve seat, this structure can adjust the most automatically according to the abrasion of spool or valve opening, it is ensured that spring and spool are in the stability of course of action；Turbulent behavior of the present invention is accurate, stable performance, it is possible to provide the damping force characteristic of degree of precision for vibroshock, improves vibroshock and the service life of parts.
Accompanying drawing explanation
The present invention is further detailed explanation for the embodiment be given below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the overflow valve (closed mode) of the present invention；
Fig. 2 is the right view of the spool in Fig. 1；
Fig. 3 is the open mode schematic diagram of Fig. 1.
Detailed description of the invention
nullSuch as Fig. 1、2、Shown in 3，A kind of oil-pressure damper overflow valve of the present invention，Including matrix 5、Spool 3、Spring 4 and valve seat 2，There is on matrix 5 valve installing hole 5-1、Fuel feed hole 5-4 and outage 5-5，Also include that valve seat guides 1，Valve seat guides 1 and has external thread section 1-2，External thread section 1-2 coordinates with the threaded one end of the valve installing hole 5-1 of matrix 5，Valve seat guides 1 and also has guiding blind hole 1-1，Described valve seat 2 is positioned at the periphery guiding blind hole 1-1 and valve seat 2 and guides the hole wall matched in clearance of blind hole 1-1，Described spool 3 has pilot seal post 3-1 and spring base 3-2，The spool 3 of sealing column 3-1 root has sealing surface 3-4，Sealing hole 5-3 is also had on described matrix 5，The two ends sealing hole 5-3 communicate with valve installing hole 5-1 and fuel feed hole 5-4 respectively，In the valve installing hole 5-1 of matrix 5 and be positioned at and seal the Kong Yanchu of hole 5-3 there is step 5-2，The pilot seal post 3-1 of described spool 3 be inserted in the sealing hole 5-3 of matrix 5 and with seal hole 5-3 matched in clearance，The spring base 3-2 and sealing surface 3-4 of spool 3 are respectively positioned in valve installing hole 5-1，The sealing surface 3-4 of spool 3 coordinates with the step 5-2 end face in the valve installing hole 5-1 of matrix 5，Described spring 4 is positioned at valve installing hole 5-1，One end offsets with valve seat 2，The other end offsets with the spring base 3-2 of spool 3，Initial throttle orifice 3-3 is had in described spool 3，Overflow launder 3-1-1 is had on the pilot seal post 3-1 of spool 3，The notch of overflow launder 3-1-1 communicates with fuel feed hole 5-4，The bottom of overflow launder 3-1-1 leads to one end of initial throttle orifice 3-3，The other end of initial throttle orifice 3-3 leads to valve installing hole 5-1，Valve installing hole 5-1 connects with outage 5-5.
As shown in Figure 1, 2, in order to make spring action more stable, there is on the spring base 3-2 of described spool 3 first lead 3-2-1, there is on valve seat 2 second lead 2-1, one end of spring 4 be enclosed within the first lead 3-2-1 of the spring base 3-2 of spool 3 and with the first lead 3-2-1 matched in clearance, the other end of spring 4 be enclosed within the second lead 2-1 of valve seat 2 and with the second lead 2-1 matched in clearance.
As in figure 2 it is shown, in order to provide the off-load damping capacity meeting requirement, the spring base 3-2 of described spool 3 has several axially extended slot 3-5, the bottom land of the slot 3-5 distance from the spool 3 center peripheral radius more than or equal to the sealing surface 3-4 of spool 3.Slot 3-5 can tackle abnormal conditions, is to ensure that safe measure.When speed quickly time, it is desirable to damping force slowly increases, and does not increase quickly, and to avoid exceeding the limit, without slot 3-5, then damped coefficient is of a relatively high, it is impossible to take precautions against abnormal conditions.
As shown in Figure 1,3, flowing for the ease of liquid, described valve seat guides 1 and also has necking segment 1-3, has gap 6 between periphery and the inwall of valve installing hole 5-1 of necking segment 1-3, and the aperture of outage 5-5 is connected with gap 6.
As shown in Figure 3, the operation principle of the present invention is as follows: the present invention is used for locomotive vehicle oil hydraulic damper, and when vibroshock works, high-pressure work oil is by this overflow valve, along with opening of spool 3 makes overflow launder 3-1-1 area be changed stepwise, working oil is discharged into outage 5-5 by after valve installing hole 5-1.When oil pressure at fuel feed hole 5-4 is less than preset value, working oil only enters outage 5-5 by the initial throttle orifice 3-3 on spool 3；When oil pressure at fuel feed hole 5-4 is higher than preset value, spool 3 rises to specify position, and the overflow launder 3-1-1 part on spool 3 connects with outage 5-5, forms off-load.Oil pressure at fuel feed hole 5-4 is the highest, and spool 3 rises the highest, and the area that overflow valve is opened is the biggest, thus produces default unloading performance；When spool 3 and matrix 5 seal and produce gap due to abrasion between mating holes, easily there is unsteady phenomena in spool 3.Owing to valve seat 2 is positioned at the periphery guiding blind hole 1-1 and valve seat 2 and guides the hole wall matched in clearance of blind hole 1-1, valve seat 2 can adjust according to the deflection of spring 4 within the specific limits, and the state that keeps relative stability, and after spring 4 fixes, spool 3 also can be stablized relatively.
Claims (3)
1. an oil-pressure damper overflow valve, including matrix (5), spool (3), spring (4) and valve seat (2), matrix (5) has valve installing hole (5-1), fuel feed hole (5-4) and outage (5-5), it is characterised in that:
A, also include valve seat guide (1), valve seat guides (1) and has external thread section (1-2), external thread section (1-2) coordinates with the threaded one end of the valve installing hole (5-1) of matrix (5), valve seat guides (1) and also has guiding blind hole (1-1), described valve seat (2) is positioned at the periphery guiding blind hole (1-1) and valve seat (2) and guides the hole wall matched in clearance of blind hole (1-1)
B, described spool (3) have pilot seal post (3-1) and spring base (3-2), have sealing surface (3-4) on the spool (3) of sealing column (3-1) root,
Sealing hole (5-3) is also had on c, described matrix (5), the two ends sealing hole (5-3) communicate with valve installing hole (5-1) and fuel feed hole (5-4) respectively, in the valve installing hole (5-1) of matrix (5) and be positioned at and seal the Kong Yanchu in hole (5-3) there is step (5-2)
D, the pilot seal post (3-1) of described spool (3) be inserted in the sealing hole (5-3) of matrix (5) and with seal hole (5-3) matched in clearance, the spring base (3-2) of spool (3) and sealing surface (3-4) are respectively positioned in valve installing hole (5-1), the sealing surface (3-4) of spool (3) coordinates with step (5-2) end face in the valve installing hole (5-1) of matrix (5)
E, described spring (4) are positioned at valve installing hole (5-1), and one end offsets with valve seat (2), and the other end offsets with the spring base (3-2) of spool (3),
Initial throttle orifice (3-3) is had in f, described spool (3), overflow launder (3-1-1) is had on the pilot seal post (3-1) of spool (3), the notch of overflow launder (3-1-1) communicates with fuel feed hole (5-4), the bottom of overflow launder (3-1-1) leads to one end of initial throttle orifice (3-3), the other end of initial throttle orifice (3-3) leads to valve installing hole (5-1), valve installing hole (5-1) connects with outage (5-5)
G, described spool (3) spring base (3-2) on there is several axially extended slots (3-5), the bottom land of slot (3-5) distance from spool (3) center is more than or equal to the peripheral radius of sealing surface (3-4) of spool (3).
Oil-pressure damper overflow valve the most according to claim 1, it is characterized in that: on the spring base (3-2) of described spool (3), there is the first lead (3-2-1), there is on valve seat (2) the second lead (2-1), one end of spring (4) be enclosed within first lead (3-2-1) of the spring base (3-2) of spool (3) upper and with the first lead (3-2-1) matched in clearance, the other end of spring (4) be enclosed within second lead (2-1) of valve seat (2) upper and with the second lead (2-1) matched in clearance.
Oil-pressure damper overflow valve the most according to claim 1, it is characterized in that: described valve seat guides (1) and also has necking segment (1-3), having gap (6) between periphery and the inwall of valve installing hole (5-1) of necking segment (1-3), the aperture of outage (5-5) is connected with gap (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210522474.3A CN103851122B (en) | 2012-12-07 | 2012-12-07 | Oil-pressure damper overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210522474.3A CN103851122B (en) | 2012-12-07 | 2012-12-07 | Oil-pressure damper overflow valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103851122A CN103851122A (en) | 2014-06-11 |
| CN103851122B true CN103851122B (en) | 2016-09-14 |
Family
ID=50859134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210522474.3A Active CN103851122B (en) | 2012-12-07 | 2012-12-07 | Oil-pressure damper overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851122B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143603B (en) * | 2017-06-28 | 2019-01-25 | 中车青岛四方车辆研究所有限公司 | Valve component, piston unit and oil-pressure damper |
| CN108167370B (en) * | 2017-12-30 | 2024-03-29 | 珠海市业成轨道交通设备科技有限公司 | Valve seat of core valve of oil pressure shock absorber for high-speed motor train |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4889151A (en) * | 1988-11-03 | 1989-12-26 | Oten Peter D | Snap action pressure relief valve with over pressure indicator |
| DE29816094U1 (en) * | 1997-12-23 | 1999-04-22 | Fritz Schunk Gmbh & Co Kg | Hydraulic shock absorber |
| CN201277299Y (en) * | 2008-10-17 | 2009-07-22 | 常州慧阳科技发展有限公司 | Damping unloading valve of vibration damper |
| CN101943237A (en) * | 2010-09-08 | 2011-01-12 | 河海大学常州校区 | Double-overflow load limiting double-stage hydraulic damper |
| CN102537174A (en) * | 2012-02-10 | 2012-07-04 | 河海大学常州校区 | Overflow constant-load hydraulic rotary damper |
| CN203009686U (en) * | 2012-12-07 | 2013-06-19 | 常州朗锐凯迩必减振技术有限公司 | Overflow valve used for oil damper |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5508883B2 (en) * | 2010-02-05 | 2014-06-04 | カヤバ システム マシナリー株式会社 | Pressure relief valve and seismic damper |
-
2012
- 2012-12-07 CN CN201210522474.3A patent/CN103851122B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4889151A (en) * | 1988-11-03 | 1989-12-26 | Oten Peter D | Snap action pressure relief valve with over pressure indicator |
| DE29816094U1 (en) * | 1997-12-23 | 1999-04-22 | Fritz Schunk Gmbh & Co Kg | Hydraulic shock absorber |
| CN201277299Y (en) * | 2008-10-17 | 2009-07-22 | 常州慧阳科技发展有限公司 | Damping unloading valve of vibration damper |
| CN101943237A (en) * | 2010-09-08 | 2011-01-12 | 河海大学常州校区 | Double-overflow load limiting double-stage hydraulic damper |
| CN102537174A (en) * | 2012-02-10 | 2012-07-04 | 河海大学常州校区 | Overflow constant-load hydraulic rotary damper |
| CN203009686U (en) * | 2012-12-07 | 2013-06-19 | 常州朗锐凯迩必减振技术有限公司 | Overflow valve used for oil damper |
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| Publication number | Publication date |
|---|---|
| CN103851122A (en) | 2014-06-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213125 Jiangsu province Changzhou City New District Xue Shun Road No. 19 Patentee after: CHANGZHOU KYB LEADRUN VIBRATION REDUCTION TECHNOLOGY CO.,LTD. Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213125 Jiangsu province Changzhou City New District Xue Shun Road No. 19 Patentee before: CHANGZHOU KYB LEADRUN VIBRATION REDUCTION TECHNOLOGY CO.,LTD. Patentee before: CSR QISHUYAN INSTITUTE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190109 Address after: 213011 No. 2 Longpan Road, Wujin High-tech Development Zone, Changzhou City, Jiangsu Province Co-patentee after: CHANGZHOU KYB LEADRUN VIBRATION REDUCTION TECHNOLOGY CO.,LTD. Patentee after: CRRC CHANGZHOU DIESEL ENGINE COMPONENTS Co.,Ltd. Co-patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213125 No. 19 Xuejiashunyuan Road, Xinbei District, Changzhou City, Jiangsu Province Co-patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Patentee before: CHANGZHOU KYB LEADRUN VIBRATION REDUCTION TECHNOLOGY CO.,LTD. |
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| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 213011 No. 2 Longpan Road, Wujin High-tech Development Zone, Changzhou City, Jiangsu Province Patentee after: CRRC CHANGZHOU DIESEL ENGINE COMPONENTS Co.,Ltd. Country or region after: China Patentee after: CHANGZHOU KYB LEADRUN VIBRATION REDUCTION TECHNOLOGY CO.,LTD. Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Address before: 213011 No. 2 Longpan Road, Wujin High-tech Development Zone, Changzhou City, Jiangsu Province Patentee before: CRRC CHANGZHOU DIESEL ENGINE COMPONENTS Co.,Ltd. Country or region before: China Patentee before: CHANGZHOU KYB LEADRUN VIBRATION REDUCTION TECHNOLOGY CO.,LTD. Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
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| CP03 | Change of name, title or address |