CN205155015U - Rolling stock hydraulic shock absorber seal structure - Google Patents
Rolling stock hydraulic shock absorber seal structure Download PDFInfo
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- CN205155015U CN205155015U CN201520808503.1U CN201520808503U CN205155015U CN 205155015 U CN205155015 U CN 205155015U CN 201520808503 U CN201520808503 U CN 201520808503U CN 205155015 U CN205155015 U CN 205155015U
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- guide holder
- oil
- piston rod
- guide
- oil storage
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Abstract
The utility model discloses a rolling stock hydraulic shock absorber seal structure. The oil leak accident very easily takes place for current hydraulic shock absorber's movive seal piece in the use. The utility model discloses a guide holder sets up in the oil storage jar to hole clearance fit with interior hydro -cylinder, the guide holder passes through static seal spare with the oil storage inside wall of cylinder and seals, the dust ring sets up the ditch inslot at the guide holder, and the lip of dust ring and piston rod interference fit, movive seal piece and guide holder interference fit, the lip and the piston rod of movive seal piece are interference fit, it has guide way and a plurality of oil gallery to open on the guide holder, the guide ring cover is put in the guide way to with piston rod clearance fit, the pressurization subassembly sets up between piston rod and guide holder, dust ring, movive seal piece, oil gallery, pressurization subassembly and guide ring are arranged to the inner by the outer end of guide holder in proper order. The utility model discloses realize the separation of pressurization and low pressure seal, promote the sealed factor of safety of hydraulic shock absorber comprehensively.
Description
Technical field
The utility model belongs to rail vehicles field, relates to rail vehicles oil-pressure damper, is specifically related to a kind of locomotive vehicle oil hydraulic damper sealing configuration.
Background technique
Along with the great-leap-forward development of domestic railway transportation equipment industry, the motion speed also corresponding raising of rolling stock, numerous passengers more pay attention to Security and the travelling comfort of taking track traffic trip than ever.Oil-pressure damper as rolling stock key components and parts, its to the damping of rolling stock and Security more and more pay attention to by main engine factory scientific worker, can it normally play vibration-damping function by the comfort level of the traffic safety and passenger that directly have influence on train.Because China is vast in territory, climate variability, track grade differ greatly, this requires that oil-pressure damper should be able to bear sand and dust and to corrode and from the vibratory impulse of track and rolling stock, this proposes more harsh quality requirement to vibration damper, oil-pressure damper except keeping reliable and stable damping capacity, most critical be exactly prevent resisting medium from leaking (leakage of oil).In present existing solution, actual operation on locomotive examination effect is unsatisfactory, if application number is 200610074906.3, name is called the Chinese patent literature of " seal arrangement of rail locomotive and vehicle oil-pressure damper ", this patent has following deficiency: (1) motive sealing inside is the wave structure of fold, and quality testing engineer is difficult to detect subsurface defect (as lip breakage, scuffing etc.); (2) this structure does not increase guiding device, metal parts machining accuracy and cost are raised, and vibration damper is at any time by side direction alternate load, easily causes, between piston rod and guide holder, sliding friction occurs, damage piston rod surface; (3) to take stroke in the axial direction longer for sealing structure, is unfavorable for vibration damper overall construction design; (4) though sealing structure can ensure zero leakage in perfect condition, in actual loading operation, vibratility adjustment generally exceedes Sealing and to stretch stroke, causes seal lip to be worn and torn, losing efficacy, oil accident occurs, and causes vibration-damping function to lose efficacy.This is serious potential safety hazard to the rolling stock of running at high speed.Be necessary to propose for this reason a kind of structure simple, be convenient to the sealing configuration that detection, easy processing, safety coefficient are high, be easy to vibration damper global design.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, a kind of locomotive vehicle oil hydraulic damper sealing configuration is proposed, by external dust ring, static seal and motive sealing, internal high-voltage black box, realize high pressure sealing to be separated with low pressure seal, General Promotion Seal of Oil Dampers safety coefficient, makes component easily process, is easy to detect, facilitate vibration damper global design.
The utility model takes following technical proposals:
The utility model comprises dust ring, outer blind nut, pressing plate, static seal, dynamic seal, oil storage cylinder, guide holder, O shape circle, lattice enclose and guide ring; Described guide holder is arranged in oil storage cylinder, and with the endoporus Spielpassung of inner cylinder; Guide holder and oil storage cylinder inwall are sealed by static seal, and pressing plate is adjacent to static seal; Described outer blind nut and oil storage cylinder inwall are threaded connection, and clamping platen; Described dust ring is arranged in the groove of guide holder, and the lip of dust ring and piston rod interference fit; Described dynamic seal and guide holder interference fit, the lip of dynamic seal and piston rod are interference fit; Guide holder has guiding groove and some spill ports; The outer end of described spill port is communicated with the oil pocket formed between oil storage cylinder and inner cylinder; Described guide ring is nested with in guiding groove, and with piston rod Spielpassung; Described O shape snare is put and form high-pressure sealing component in Ge Laiquan, and high-pressure sealing component is arranged between piston rod and guide holder; Described dust ring, dynamic seal, spill port, high-pressure sealing component and guide ring are arranged to the inner successively by the outer end of guide holder, and the contact segment of guide holder and piston rod is separated into inner high pressure oil area and outside low pressure oil district by spill port.
Described dynamic seal has annular V groove towards the end opens of guide holder the inner.
Described lattice enclose has taper oil storage tank towards the end opens of guide holder the inner, and O shape snare is put in taper oil storage tank.
Described guide ring adopts the blending material of teflon and bronze powder.
Described dust ring and dynamic seal all adopt the elastic material of oil resistant.
The beneficial effect that the utility model has:
1, the utility model is by the impurity such as dust, washing agent in the external dust ring isolation external world, in guide holder indoor design high pressure oil area and low pressure oil district, make dynamic seal lip not bear oil pressure and only do simple frizing action, drastically increase the working life of dynamic seal.
2, dynamic seal structure of the present utility model is simple, easy processing, facilitates quality engineer to detect, and dynamic seal end adopts unique V-type to design, auto-compensation lip weares and teares, and plays very crucial effect for further elevator car vehicle safety and travelling comfort.
3, integral sealing size of the present utility model is less, reserves enough safety travels to vibration damper inner space, avoid vibration damper because stroke is nervous the accident that meets accident.
4, the utility model sets up guide structure, reduces the machining accuracy of metalwork and cost, and when the more important thing is that piston rod bears side direction alternate load, piston rod also directly and metal pieces into contact, can not avoid the coating of scratch piston rod surface.
5, the utility model also can apply to automobile and damper of motorcycle etc. with the vibration damper (or damper) of hydraulic oil (or other media).
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present utility model;
Fig. 2 is the structure sectional view of dynamic seal in the utility model;
Fig. 3 is the structure sectional view that in the utility model, lattice enclose.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, a kind of locomotive vehicle oil hydraulic damper sealing configuration, comprises dust ring 1, outer blind nut 2, pressing plate 3, static seal 4, dynamic seal 5, oil storage cylinder 6, guide holder 7, O shape circle 9, lattice encloses 10 and guide ring 11; Guide holder 7 is arranged in oil storage cylinder 6, and with the endoporus Spielpassung of inner cylinder 13; Guide holder 7 and oil storage cylinder 6 inwall are sealed by static seal 4, and pressing plate 3 is adjacent to static seal 4; Outer blind nut 2 is threaded connection with oil storage cylinder 6 inwall, and clamping platen 3, make pressing plate 3 produce axial pressure and compress static seal 4; Dust ring 1 is arranged in the groove of guide holder 7, and the lip of dust ring 1 and piston rod 14 interference fit; Dynamic seal 5 and guide holder 7 interference fit, lip and the piston rod 14 of dynamic seal 5 are interference fit; Guide holder 7 has guiding groove and some spill ports 8; The outer end of spill port 8 is communicated with the oil pocket formed between oil storage cylinder 6 and inner cylinder 13 (III chamber); Guide ring 11 is nested with in guiding groove, and with piston rod Spielpassung, guide ring 11 adopts the blending material of teflon and bronze powder; O shape circle 9 is nested with and forms high-pressure sealing component in Ge Laiquan 10, and high-pressure sealing component is arranged between piston rod 14 and guide holder 7; Dust ring 1, dynamic seal 5, spill port 8, high-pressure sealing component and guide ring 11 are arranged to the inner successively by the outer end of guide holder 7, the contact segment of guide holder and piston rod 14 is separated into inner high pressure oil area and outside low pressure oil district by spill port 8, make dynamic seal lip not bear oil pressure and only do simple frizing action, drastically increase the working life of dynamic seal; Dust ring 1 and dynamic seal 5 all adopt the elastic material of oil resistant.
As shown in Figure 2, dynamic seal 5 has annular V groove towards the end opens of guide holder 7 the inner, dynamic seal 5 can be made to produce internal pressure stress when being full of fluid in annular V groove, compensates the mild wear of dynamic seal 5 lip.
As shown in Figure 3, lattice enclose 10 has taper oil storage tank towards the end opens of guide holder 7 the inner, and O shape circle 9 is nested with in taper oil storage tank; Lattice can be made when being full of fluid in the taper oil storage tank that lattice enclose to enclose generation internal pressure stress, compensate the mild wear of O shape circle.
The working principle of this locomotive vehicle oil hydraulic damper sealing configuration:
When rolling stock orbits because the error of the irregularity of track and locomotive element assembling can make rolling stock produce motion (vertical or transverse vibration) in the direction of perpendicular or parallel track, this vibration can make vibration damper stretch or compression movement along piston rod axial direction, with this vibration that decays, make vehicle operating steadily, safety.
Dust ring 1 is the outside dust-proof sealing structure of vibration damper, outside dust, washing agent and fine sand can be stoped to enter vibration damper inside, avoid foreign matter to enter vibration damper, vibration-damping function was lost efficacy.
When vibration damper is in stretching (compression) stage: due to piston rod outwards (interior) motion, II (I) cavity volume increases, pressure reduces, I (II) cavity volume reduces, pressure increase, therefore I (II) chamber belongs to hyperbaric chamber, fluid flows into II (I) chamber from I (II) chamber by the damping hole piston, because hydraulic oil 12 is sheared by the damping hole 16 of piston, produce (compression) damping force that stretches, with the vibration of rolling stock of decaying.Because guide ring and piston rod belong to Spielpassung, high pressure oil is made to enter high-pressure sealing component place by this gap, interference fit between this high-pressure sealing component and piston rod, when hydraulic fluid pressure is less than high-pressure sealing component enclasping force, hydraulic oil is not by high-pressure sealing component, when I (II) cavity volume reduces gradually, when oil liquid pressure raises gradually and is greater than high-pressure sealing component enclasping force, partial high pressure oil flows in the oil storage tank of spill port by the gap between high-pressure sealing component and piston rod, because now oil liquid pressure is greater than III cavity pressure, hydraulic oil flows back to III chamber by spill port, therefore the pressure at dynamic seal place almost maintains a barometric pressure, so this dynamic seal just simply reciprocally carries out frizing action, and because of dynamic seal compression chord in guide holder, can auto-compensation be carried out when the lip of dynamic seal has wearing and tearing, avoid vibration damper leakage of oil because of lip wearing and tearing.
Claims (4)
1. a locomotive vehicle oil hydraulic damper sealing configuration, comprise dust ring, outer blind nut, pressing plate, static seal, dynamic seal, oil storage cylinder, guide holder, O shape circle, lattice enclose and guide ring, it is characterized in that: described guide holder is arranged in oil storage cylinder, and with the endoporus Spielpassung of inner cylinder; Guide holder and oil storage cylinder inwall are sealed by static seal, and pressing plate is adjacent to static seal; Described outer blind nut and oil storage cylinder inwall are threaded connection, and clamping platen; Described dust ring is arranged in the groove of guide holder, and the lip of dust ring and piston rod interference fit; Described dynamic seal and guide holder interference fit, the lip of dynamic seal and piston rod are interference fit; Guide holder has guiding groove and some spill ports; The outer end of described spill port is communicated with the oil pocket formed between oil storage cylinder and inner cylinder; Described guide ring is nested with in guiding groove, and with piston rod Spielpassung; Described O shape snare is put and form high-pressure sealing component in Ge Laiquan, and high-pressure sealing component is arranged between piston rod and guide holder; Described dust ring, dynamic seal, spill port, high-pressure sealing component and guide ring are arranged to the inner successively by the outer end of guide holder, and the contact segment of guide holder and piston rod is separated into inner high pressure oil area and outside low pressure oil district by spill port.
2. a kind of locomotive vehicle oil hydraulic damper sealing configuration according to claim 1, is characterized in that: described dynamic seal has annular V groove towards the end opens of guide holder the inner.
3. a kind of locomotive vehicle oil hydraulic damper sealing configuration according to claim 1, is characterized in that: described lattice enclose has taper oil storage tank towards the end opens of guide holder the inner, and O shape snare is put in taper oil storage tank.
4. a kind of locomotive vehicle oil hydraulic damper sealing configuration according to claim 1, is characterized in that: described dust ring and dynamic seal all adopt the elastic material of oil resistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520808503.1U CN205155015U (en) | 2015-10-16 | 2015-10-16 | Rolling stock hydraulic shock absorber seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520808503.1U CN205155015U (en) | 2015-10-16 | 2015-10-16 | Rolling stock hydraulic shock absorber seal structure |
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| Publication Number | Publication Date |
|---|---|
| CN205155015U true CN205155015U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520808503.1U Active CN205155015U (en) | 2015-10-16 | 2015-10-16 | Rolling stock hydraulic shock absorber seal structure |
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| CN (1) | CN205155015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536188A (en) * | 2020-04-30 | 2020-08-14 | 珠海市业成轨道交通设备科技有限公司 | Single-cycle structure oil pressure damper guide cover assembly for world leading high-speed motor train unit |
-
2015
- 2015-10-16 CN CN201520808503.1U patent/CN205155015U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536188A (en) * | 2020-04-30 | 2020-08-14 | 珠海市业成轨道交通设备科技有限公司 | Single-cycle structure oil pressure damper guide cover assembly for world leading high-speed motor train unit |
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| GR01 | Patent grant |