CN203822930U - Oil pressure absorber for railway vehicle - Google Patents
Oil pressure absorber for railway vehicle Download PDFInfo
- Publication number
- CN203822930U CN203822930U CN201420268799.8U CN201420268799U CN203822930U CN 203822930 U CN203822930 U CN 203822930U CN 201420268799 U CN201420268799 U CN 201420268799U CN 203822930 U CN203822930 U CN 203822930U
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- adjusting nut
- oil
- hole
- spring
- valve
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Abstract
The utility model provides an oil pressure absorber for a railway vehicle, and belongs to the field of oil pressure absorbers. The oil pressure absorber structurally comprises a piston component and a foot valve component, wherein the piston component comprises a damping valve, a piston body, a spring and a regulating nut; the damping valve is directly mounted on and in sliding connection with the piston body, the regulating nut is sleeved with one end of the spring, and the valve core of the damping valve is sleeved with the other end of the spring, so that the top end of the valve core is opposite to the regulating nut, and the valve core and the regulating nut can move relatively; the regulating nut is in threaded connection with the piston body, and the connection parts of the regulating nut and the piston body are fixedly connected through riveting. Through the adoption of the oil pressure absorber, oil pollution can be avoided; the friction between the spring and a threaded hole can be controlled effectively; damping force can be regulated conveniently; the regulating nut can be dismounted; breakdown of an absorber caused by looseness of the regulating nut can be avoided effectively.
Description
Technical field
The utility model relates to oil-pressure damper field, particularly a kind of oil pressure vibrating reducer for railbus.
Background technique
For ensureing vehicle operation safely and smoothly on the line, existing rail vehicle, be that EMU, rolling stock, light rail, subway etc. all extensively adopt oil-pressure damper to carry out vibration damping above, its Main Function is to reduce vehicle the be in operation vibration and the impact that cause when contact with track from wheel, thus Security, stationarity, Economy and the passenger's of raising vehicle operating travelling comfort.This type of vibration damper inside mainly contains bottom valve parts, piston element, pilot seal parts, oil storage cylinder parts, inner cylinder, outside protective covers parts and two ends bindiny mechanism composition.The basic principle of vibration damper is: in the time of work, piston is to-and-fro motion in inner cylinder, and fluid produces damping through orifice valve while flowing in cylinder, and meanwhile, vibration damper is converted into the heat energy of fluid by the vibrational energy of system and dissipates.
The defect of prior art
One, defective workmanship:
Existing oil-pressure damper piston and bottom valve orifice valve, for ensureing the stability of damping force, after completing, adjustment needs to be fixed with screw thread glue, even if using screw thread glue fixes, due to the quality of screw thread glue and the deficiency of assembly technology, also often there is the phenomenons such as damping valve of damper becomes flexible, comes off, and cause defective shock absorber.Assemble rear test failure, need to reprocess, because orifice valve is fixed with screw thread glue, cannot adjust with spanner, must, by orifice valve being unclamped after heating, be high-intensity screw thread glue due to what use, heating-up temperature needs very high, can destroy orifice valve spring like this, need more renew spring, and the efficiency of reprocessing be also very low; Because vibration damper inside belongs to the sealing system of high-cleanness sealing, the cleanliness of fluid requires very high, if the cleaning of screw thread glue totally can not pollute fluid, causes orifice valve to stop up, and causes the defects such as damping force is unstable, thereby makes defective shock absorber.
Two, structural imperfection:
Orifice valve structure on damper piston is at present: spring is put in piston body endoporus, and adjusting nut is enclosed within on core valve, is then contained on piston body.Because vibration damper spatial constraints causes spanner groove or the hole of opening on adjusting nut very little, the dismounting in later stage is brought to very burden, dismantling spanner often damages.Orifice valve in the course of the work, need frequent and adjusting nut to clash into, if it is firm not that orifice valve is fixed in the time of assembling, in later stage work, can greatly increase the loosening risk of adjusting nut, after loosening, cause damping force unstable, because the unstable vibration damper that causes of damping force breaks down, likely cause the vibration aggravation of whole vehicle, and affect passenger's travelling comfort.
Mainly there is following problem in the orifice valve structure of shock absorber bottom valve at present:
Oiling valve motive position quality is large, and inertia is large, and the action underaction of valve can not cover vibration damper fluid in the time of high-frequency work in time, causes absorber damping force unstable.While adjusting spring pressure, by adopting replacing pad to realize, can only be to have level adjustment, validity be inadequate and complicated, does not reach optimum value.The fixing defect of orifice valve is identical with above-mentioned piston element, has same problem.
Summary of the invention
Technical assignment of the present utility model is for the deficiencies in the prior art, and a kind of oil-pressure damper is provided, and solves technological problems, solves the structure problem of piston and bottom valve.
The utility model solves the technological scheme that its technical problem adopts:
A kind of oil-pressure damper, comprise piston element and bottom valve parts, described piston element comprises piston body, one and above orifice valve are installed on piston body, also have one and the above spring matching with orifice valve and adjusting nut, orifice valve is directly contained on piston body and with it and is slidably connected, described spring one end is enclosed within on adjusting nut, and the other end is enclosed within on the spool of orifice valve, and making between the top end of spool and spool and adjusting nut relative with adjusting nut can relative movement; The middle part of described adjusting nut is provided with through hole, between adjusting nut and piston body, is threaded; Orifice valve is directly contained on piston body, reduces the impact of orifice valve to adjusting nut, thereby reduce the loosening risk of adjusting nut, adjusting nut can play again spring fixation, effectively the friction of control spring and tapped hole.
Between the adjusting nut of piston body outside and the connection part of piston body together with rivet clasp.Orifice valve adjusting nut fixedly changes the fixing of riveted joint form into by original screw thread glue, does not need heating dismounting, only need can adjust with spanner, conveniently reprocesses.
Further, offer driving hole or groove on adjusting nut, driving hole or groove are successively around being arranged on middle through-hole around.By improving the structure of adjusting nut, can make spanner groove or hole increase, convenient damping force and the dismounting adjusting nut adjusted.
Described oil-pressure damper, described bottom valve parts comprise orifice valve, bottom valve body, spring and adjusting nut, orifice valve is directly contained on bottom valve body and with it and is slidably connected, described spring one end is connected on adjusting nut, the other end is enclosed within on the spool of orifice valve, and making between the top end of spool and spool and adjusting nut relative with adjusting nut can relative movement; Between described adjusting nut and bottom valve body, be threaded; Adjusting nut and bottom valve body are fixed by the mode of rivet clasp at the adjusting nut of bottom valve external body and the connection part of bottom valve body.Orifice valve adjusting nut fixedly changes the fixing of riveted joint form into by original screw thread glue, does not need heating dismounting, only need can adjust with spanner, conveniently reprocesses.
Further, adjust nut upper end and form a groove, spring is corresponding thereto arranged in groove.Groove is convenient to the position of spring to fix.
Orifice valve is directly contained on piston body, reduces the impact of orifice valve to adjusting nut, thereby reduce the loosening risk of adjusting nut, adjusting nut can play again spring fixation, effectively the friction of control spring and tapped hole.
Further, offer driving hole or groove on adjusting nut, spanner groove is successively around being arranged on middle through-hole around.Improve spanner groove or the hole of adjusting nut, convenient damping force and the dismounting adjusting nut adjusted.
Described oil-pressure damper, one end of its adjusting nut relative with orifice valve spool is arranged to convex and is matched with described spring.The medial axis at orifice valve spool place and the axis at adjusting nut place are on same straight line.Be conducive to like this retaining spring, make spring be in all the time fixing central position.
In the time that wheel runs into protruding road surface and is subject to impacting, cylinder barrel moves up, and piston relatively moves down in inner cylinder tube.Now, the piston valve of a side is washed open upwards by fluid, and the fluid of inner cylinder tube chamber inner carrier downside flows to piston upside.Meanwhile, also there is part fluid also to flow in the oil pocket between inside and outside cylinder barrel by the damping valve opening in bottom valve.And in the time that wheel is crossed protruding ground toward whereabouts, cylinder barrel also can be followed down motion, piston will move up with respect to cylinder barrel.In the time that piston moves up, fluid is pushed the flow direction valve inner cylinder tube of bottom open, and the hole of the oil of inner cylinder tube piston upside on piston opposite side valve flows to downside simultaneously.Now when fluid flows through in the process of each valve damping hole, can produce certain resistance, reciprocating like this oil liquid temperature will raise, then oil liquid temperature will dissipate by outer oil cylinder, whole process is that the vibrational energy of vehicle is converted into heat energy and dissipates, thereby play the object of vibration damping, the impact load of concavo-convex road surface to vehicle of so just effectively having decayed.The large I of oil-pressure damper damping force need to be adjusted by the size of adjusting damping valve opening according to vehicle.
Compared with prior art, the beneficial effect producing is the utility model:
1, process aspect: for solving technological problems, it is fixing that the means of fixation of orifice valve adjusting nut and piston body fixedly changes riveted joint into by original screw thread glue, do not need heating dismounting, only need can adjust with spanner, conveniently reprocesses.Adopt that riveted joint is fixing can improve the efficiency of adjusting damping force, can avoid again the pollution of fluid, and spring do not need to change yet, reduce costs.
2, structure aspects:
1) for solving piston structure problem: piston body, adjusting nut structure are improved, be enclosed within on orifice valve by original adjusting nut, change into orifice valve is directly contained on piston body, the one, reduce the impact of orifice valve to adjusting nut, thereby reduce the loosening risk of adjusting nut, adjusting nut can play again spring fixation, effectively the friction of control spring and tapped hole; The 2nd, spanner groove or the hole of improving adjusting nut, convenient damping force and the dismounting adjusting nut adjusted.
2) for solving bottom valve structure problem: the structure of improving bottom valve oiling valve, orifice valve is directly assemblied on bottom valve body, the one, reduce the impact of orifice valve to adjusting nut, thereby reduce the loosening risk of adjusting nut, adjusting nut can play again spring fixation, effectively the friction of control spring and tapped hole; The 2nd, spanner groove or the hole of improving adjusting nut, convenient damping force and the dismounting adjusting nut adjusted.
Brief description of the drawings
Accompanying drawing 1 is overall structure schematic diagram of the present utility model;
Accompanying drawing 2 is structural representations of piston element;
Accompanying drawing 3 is structural representations of bottom valve parts.
In figure: 1, mounting rod assembly; 2, outside protective covers; 3, dust-proof cover; 4, pilot seal assembly; 5, piston rod; 6, airbag components; 7, oil storage cylinder parts; 8, inner cylinder; 9, bottom valve parts; 9-1, orifice valve; 9-2, bottom valve body; 9-3, spring; 9-4, adjusting nut; 9-5, driving hole; 10, piston element; 10-1, orifice valve; 10-2, piston body; 10-3, spring; 10-4, adjusting nut; 10-5, driving hole; 11, rivet clasp point.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail below.
As shown in Figure 1, structure of the present utility model comprises mounting rod parts 1, outside protective covers 2, dust-proof cover 3, pilot seal assembly 4, piston rod 5, airbag components 6, oil storage cylinder parts 7, inner cylinder 8, bottom valve parts 9, piston element 10.Piston rod 5 is threaded connection on outside protective covers 2; dust-proof cover 3 is enclosed within on piston rod 5; piston rod 5 is put in pilot seal assembly 4 endoporus; piston element 10 is threaded connection at piston rod 5 the other ends; put into together in inner cylinder 8; inner cylinder 8 the other ends are equipped with bottom valve parts 9; airbag components 6 is equipped with in inner cylinder 8 outsides; complete after above-mentioned work; above-mentioned parts are put in oil storage cylinder parts 7 together; finally mounting rod assembly 1 is put in the connecting ring of outside protective covers 2 and oil storage cylinder parts 7, by mounting rod assembly, 1 vibration damper is arranged on vehicle.
As shown in Figure 2, described piston element 10 comprises orifice valve 10-1, piston body 10-2, spring 10-3 and adjusting nut 10-4, orifice valve 10-1 is directly contained in to piston body 10-2 above and is slidably connected with it, and one end of the adjusting nut 10-4 relative with orifice valve 10-1 spool is arranged to convex and is matched with described spring 10-3; Spring 10-3 one end is enclosed within that adjusting nut 10-4 is upper, and the other end is enclosed within on the spool of orifice valve 10-1, and making between the top end of spool and spool and adjusting nut 10-4 relative with adjusting nut 10-4 can relative movement; Between described adjusting nut 10-4 and piston body 10-2, be threaded; Between adjusting nut 10-4 and piston body 10-2, put together with 11 rivet clasps at rivet clasp.
On adjusting nut 10-4, offer driving hole 10-5, driving hole 10-5 is successively around being arranged on middle through-hole around.Convenient damping force and the dismounting adjusting nut 10-4 of adjusting.
As shown in Figure 3, described bottom valve parts 9 comprise orifice valve 9-1, bottom valve body 9-2, spring 9-3 and adjusting nut 9-4, orifice valve 9-1 is directly contained in to bottom valve body 9-2 above and is slidably connected with it, adjust nut 9-4 upper end and form a groove, described spring 9-3 one end is arranged in this groove, the other end is enclosed within on the spool of orifice valve 9-1, and making between the top end of spool and spool and adjusting nut 9-4 relative with adjusting nut 9-4 can relative movement; Between described adjusting nut 9-4 and bottom valve body 9-2, be threaded; Between adjusting nut 9-4 and bottom valve body 9-2, adjusting nut 9-4 and bottom valve body 9-2 are fixed by the mode of rivet clasp at rivet clasp point 11.
On adjusting nut 9-4, offer driving hole 9-5, driving hole 9-5 is successively around being arranged on middle through-hole around.
Except the technical characteristics described in specification, be those skilled in the art's known technology.
Claims (9)
1. an oil pressure vibrating reducer for railbus, comprise piston element and bottom valve parts, it is characterized in that described piston element comprises piston body, one and above orifice valve are installed on piston body, also have one and the above spring matching with orifice valve and adjusting nut, orifice valve is directly contained on piston body and with it and is slidably connected, described spring one end is enclosed within on adjusting nut, the other end is enclosed within on the spool of orifice valve, and making between the top end of spool and spool and adjusting nut relative with adjusting nut can relative movement; The middle part of described adjusting nut is provided with through hole, between adjusting nut and piston body, is threaded; Adjusting nut and piston body are fixed by the mode of rivet clasp at the adjusting nut of piston body outside and the connection part of piston body.
2. oil-pressure damper according to claim 1, it is characterized in that described bottom valve parts comprise orifice valve, bottom valve body, spring and adjusting nut, orifice valve is directly contained on bottom valve body and with it and is slidably connected, described spring one end is connected on adjusting nut, the other end is enclosed within on the spool of orifice valve, and making between the top end of spool and spool and adjusting nut relative with adjusting nut can relative movement; The middle part of described adjusting nut is provided with through hole, between adjusting nut and bottom valve body, is threaded; Adjusting nut and bottom valve body are fixed by the mode of rivet clasp at the adjusting nut of bottom valve external body and the connection part of bottom valve body.
3. oil-pressure damper according to claim 1, is characterized in that being disposed with several driving holes around adjusting nut through hole, and each driving hole is identical to the distance in the through hole center of circle.
4. oil-pressure damper according to claim 1, is characterized in that being disposed with several spanner grooves around adjusting nut through hole, and each spanner groove is identical to the distance in the through hole center of circle.
5. oil-pressure damper according to claim 2, is characterized in that being disposed with several driving holes around adjusting nut through hole, and each driving hole is identical to the distance in the through hole center of circle.
6. oil-pressure damper according to claim 2, is characterized in that being disposed with several spanner grooves around adjusting nut through hole, and each spanner groove is identical to the distance in the through hole center of circle.
7. according to the oil-pressure damper described in claim 1 or 3 or 4, it is characterized in that one end of adjusting nut relative with orifice valve spool in piston element is arranged to convex and matches with corresponding spring.
8. according to the oil-pressure damper described in claim 2 or 5 or 6, it is characterized in that the adjustment nut upper end in bottom valve parts forms a groove, spring is corresponding thereto arranged in groove.
9. oil-pressure damper according to claim 8, is characterized in that the axis at medial axis, adjusting nut and the bottom valve body place at orifice valve spool place is on same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268799.8U CN203822930U (en) | 2014-05-17 | 2014-05-17 | Oil pressure absorber for railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420268799.8U CN203822930U (en) | 2014-05-17 | 2014-05-17 | Oil pressure absorber for railway vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822930U true CN203822930U (en) | 2014-09-10 |
Family
ID=51478438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420268799.8U Expired - Fee Related CN203822930U (en) | 2014-05-17 | 2014-05-17 | Oil pressure absorber for railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822930U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065542A (en) * | 2015-09-18 | 2015-11-18 | 珠海市业成轨道交通设备科技有限公司 | Piston unit of oil-pressure damper for rail locomotive |
| CN107143603A (en) * | 2017-06-28 | 2017-09-08 | 中车青岛四方车辆研究所有限公司 | Valve component, piston unit and oil-pressure damper |
| CN109458428A (en) * | 2018-12-28 | 2019-03-12 | 湖南联诚轨道装备有限公司 | A kind of damping piston debugging tool |
| CN110905962A (en) * | 2019-11-29 | 2020-03-24 | 中国北方车辆研究所 | Annular vibration damping valve |
| CN111022554A (en) * | 2019-12-19 | 2020-04-17 | 湖南联诚轨道装备有限公司 | Thread damping piston |
-
2014
- 2014-05-17 CN CN201420268799.8U patent/CN203822930U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065542A (en) * | 2015-09-18 | 2015-11-18 | 珠海市业成轨道交通设备科技有限公司 | Piston unit of oil-pressure damper for rail locomotive |
| CN107143603A (en) * | 2017-06-28 | 2017-09-08 | 中车青岛四方车辆研究所有限公司 | Valve component, piston unit and oil-pressure damper |
| CN109458428A (en) * | 2018-12-28 | 2019-03-12 | 湖南联诚轨道装备有限公司 | A kind of damping piston debugging tool |
| CN109458428B (en) * | 2018-12-28 | 2024-03-12 | 湖南联诚轨道装备有限公司 | Damping piston debugging tool |
| CN110905962A (en) * | 2019-11-29 | 2020-03-24 | 中国北方车辆研究所 | Annular vibration damping valve |
| CN110905962B (en) * | 2019-11-29 | 2022-02-01 | 中国北方车辆研究所 | Hydro-pneumatic spring with annular damping valve |
| CN111022554A (en) * | 2019-12-19 | 2020-04-17 | 湖南联诚轨道装备有限公司 | Thread damping piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160517 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |