CN203847616U - Hydraulic damping structure - Google Patents
Hydraulic damping structure Download PDFInfo
- Publication number
- CN203847616U CN203847616U CN201420179606.1U CN201420179606U CN203847616U CN 203847616 U CN203847616 U CN 203847616U CN 201420179606 U CN201420179606 U CN 201420179606U CN 203847616 U CN203847616 U CN 203847616U
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- spool
- passage
- compression
- buffering
- damping structure
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Abstract
The utility model discloses a hydraulic damping structure. The hydraulic damping structure solves the problems that the existing hydraulic damping structure is complex relatively and poor in working reliability. According to the technical scheme, the hydraulic damping structure comprises a flexible body and is characterized in that the flexible body which is used for being immersed in fluid separates the fluid into a buffering portion and a compressing portion; channels which communicate the buffering portion and the compressing portion are formed in the flexible body; compressing valve cores are arranged inside flow damming sides of some channels; buffering valve cores are arranged inside some channels; opening degrees which are increased along with the flexible body movement towards the compressing portion are formed between the compressive valve core and the channels; opening degrees which are reduced along with the flexible body movement towards the buffering portion are formed between the buffering valve core and the channels.
Description
Technical field
The utility model relates to a kind of vibration damping structure, relates in particular to a kind ofly utilize fluid pressurized and change stressed hydraulic type vibration damping structure.
Background technique
On vehicle, be generally provided with vibration damper, be used in vehicle traveling process damping effect is provided, these vibration dampers have hydraulic type or mechanical structure.
Chinese invention patent application (the patent No.: disclose a kind of dydraulic shock absorber 200910259700.1), having comprised: vibration damper body; Spring; Vibration damper urceolus, on vibration damper urceolus with boss; Guide pipe, its upper end is connected to vibration damper urceolus by interference fit, between lower end and vibration damper urceolus, leaves gap; Spring lower tray, is connected to guide pipe outside thread, and for supported spring lower end, its position can up-down adjustment.Guide pipe upper end diameter is less than boss diameter, and guide pipe is installed downwards from vibration damper urceolus top, and when guide pipe upper end runs into after boss, guide pipe is fixed.The present invention does not increase number of spare parts, just can realize guide pipe mode fixing easily, and spring lower tray height is adjustable, and spring lower tray can reuse, and contributes to reduce costs.
This hydraulic retarder effect is in actual use relatively poor, under limit case, can not provide good protection effect for driver.
Model utility content
For overcoming above-mentioned defect, the utility model technical issues that need to address: a kind of simple in structure, hydraulic type vibration damping structure that functional reliability is good is provided.
For solveing the technical problem, the technical solution of the utility model: a kind of hydraulic type vibration damping structure, comprise movable body, it is characterized in that, movable body is used for being immersed in fluid, and movable body becomes buffer portion and compression member fluid partitioning, is provided with the passage of linking up buffer portion and compression member in movable body, in the face that dams of some passages, be provided with compression spool, in other passages, be provided with buffering spool; Between compression spool and passage, have along with movable body becomes large aperture to the motion of compression member direction, between buffering spool and passage, there is the aperture diminishing to the motion of buffer portion direction along with movable body.Movable body in this vibration damping structure is immersed in liquid, as hydraulic oil.On use state, movable body is arranged in cylinder body, in cylinder body, be perfused with hydraulic oil, movable body is separated into two cavitys cylinder body, in these two cavitys, be fed into respectively hydraulic oil, in the time of in action, movable body is towards the compression member motion of hydraulic oil, under the effect of hydraulic oil compression part, compression valve core axial motion within passage dams face and make to compress aperture between spool and passage and become large, hydraulic oil can flow towards buffer portion from compression member, by hydraulic oil, the retardation of compression spool is reached the object of deceleration.During Er movable body reversing motion, movable body moves towards the buffer portion of hydraulic oil, the hydraulic oil of buffer portion promotes buffering spool and carries out axial motion, and the aperture that makes to cushion between spool and passage diminishes gradually, the flow of hydraulic oil is little, under the retardation of buffering spool, movable body has reversing motion comparatively slowly.When movable body's reversing motion is overrun, the aperture between compression spool and passage can be reduced to minimum; And during movable body's positive movement, it is large that the aperture between compression spool and passage becomes, movable body has positive movement faster.
Described spool is connected in passage by spring.Utilize the elasticity that the elastic force of spring has to a certain degree spool to hold effect, and make spool only outside safety range, fluid could promote valve core movement, can be by the replacing of spring be reached to the adjustment to vibration damper safety range, and then reach the adjustment to vibration damper Applicable scope, make the applied widely of vibration damper, and can control cushioning stroke.
At passage internal thread, be connected with hollow bolt, spring is connected to the inner end of hollow bolt.Hollow bolt does not limit flowing of hydraulic oil, and for convenience detach, is convenient to spring to change.
The end of described buffering spool has plush copper, on buffering spool, in the inner side of plush copper, is provided with inclined-plane or the conical surface, and the aperture between buffering spool and passage is formed between this inclined-plane or the conical surface and passage.Inclined-plane or the conical surface all have the characteristic of gradual change, and this makes speed reducer, and subduing of impact power can be in comparatively mild state, to meet actual operating mode demand in the course of the work.
One-body molded on the inner peripheral surface of passage that is equipped with buffering spool have a bulge loop, and the cross-under with gap of buffering spool is in bulge loop.By bulge loop being set and making to cushion spool cross-under in this bulge loop, make to cushion action stability and the good reliability of spool.
Inclined-plane is two, and they are located at the relative both sides of buffering spool symmetrically, has along the axially extended plane of passage the inner on inclined-plane and the Plane intersects cushioning on spool on buffering spool.Be provided with described inclined-plane and plane, be convenient to spool to process, simple in structure, make to cushion spool and can adapt to well work requirements.
Plush copper is positioned at passage, on the side face of plush copper, be provided with some along the axially extended groove of passage, the two ends of the inner bottom surface being obliquely installed respectively with described inclined-plane and thoroughly the bottom surface of the interior oral area of groove intersect.Groove is arranged in plush copper thoroughly, facilitates the setting of groove.And the inner bottom surface described in arranging, when hydraulic oil flows through inner bottom surface, inner bottom surface can slow down the flowing velocity of hydraulic oil, and to the effect of this inner bottom surface, slowing down of hydraulic oil flow velocity is embodied in the axial motion of spool by hydraulic oil, make to cushion spool and more can adapt to the work requirements of vibration damping structure.
One-body molded on the planar section of buffering spool have a lug, and along the axial arranged of plush copper the footpath that is positioned at plush copper upwards, the outer side surface of lug is positioned at the outer circumferential face position of plush copper to lug.By described lug is set, utilize the leading role between lug and vias inner walls, and make to cushion plush copper on spool outside reaching passage completely time, the motion in the axial direction of buffering spool has good radial stability, avoid cushioning spool and produce and gently significantly radially rock in movement process, in order to avoid buffering spool is damaged.
The shape of described compression spool is frustoconical, be equipped with in the passage that compresses spool and there is diameter shrinkage part, the inner at this diameter shrinkage part is formed with seam, compression spool is plugged in the diameter shrinkage part of this passage through seam, has formed the aperture between compression spool and passage between compression spool and this seam.The compression spool of taper is adapted to the promotion of hydraulic oil, is convenient to make to compress the positive movement that spool responds movable body in time, and makes to have formed aperture between passage and compression spool by the mode of seam is set in passage, simple in structure, is convenient to processing.
On the side face of compression spool, be provided with some guiding pieces, the outer side surface of guiding piece extends axially along compression spool, and the footpath that guiding piece is positioned at compression spool makes progress.By guiding piece is set, be used to the motion of compression spool that good leading role is provided, radially amplitude of fluctuation is little in movement process for compression spool, is conducive to compress the spool assurance in working life, and compression spool is also difficult for clamping stagnation.
Described compression spool is cylindrical, is equipped with in the passage that compresses spool and has diameter shrinkage part, in the inner of this diameter shrinkage part, is formed with seam, and compression spool passes seam and is plugged in the diameter shrinkage part of this passage; At the interior distolateral one-body molded of compression spool, have protrusion, a discoid convex body, convex body for and seam face fit; On the outer circumferential face of compression spool, be provided with some guide grooves along compression valve mandrel to setting, guide groove is positioned at the outside of convex body, and the size self-pressure retractor spool outer end of guide groove diminishes gradually to the inner.The size of guide groove had both instructed the degree of depth of groove, instructed again the opening size of groove.The axial motion good stability of this compression spool in passage, and simple in structure, because the setting of described guide groove is convenient to form described aperture between compression spool and described seam.
Compared with prior art, the beneficial effect the utlity model has: be provided with in movable body that described compression spool is gentle rushes spool, all there is retardance to a certain degree while making to move in movable body, thereby provide damping effect for target object.When movable body makes positive movement, the suffered drag of movable body is relatively little, when Er movable body does reversing motion, the suffered drag of movable body is relatively large, this just makes this vibration damping structure be applicable to being applied on automobile, by the direction to movable body, arrange, make car body movable body's positive movement fast when declining, and movable body's reversing motion is slow when automobile rises, this just makes the rate of descent of car body be greater than the rate of climb, this has adapted to the requirement of safe driving well, in order to avoid car body rises too fast and driver is up thrown, this has improved the Security of running on the one hand, also can effectively improve on the other hand the travelling comfort while driving.Movable body in this vibration damping structure can adapt to the motion state of object on above-below direction well, does not need to use various sensors or solenoid valve, simple in structure, functional reliability good, cheap.
Accompanying drawing explanation
Fig. 1 is the stereogram of movable body in the utility model hydraulic type vibration damping structure.
Fig. 2 is the structural drawing of movable body's one end face in the utility model hydraulic type vibration damping structure.
Fig. 3 is the structural drawing of movable body other end in the utility model hydraulic type vibration damping structure.
Longitudinal sectional view in direction of Tu4Shi movable body
Fig. 5 is the A portion enlarged view in Fig. 4.
Longitudinal sectional view in another direction of Tu6Shi movable body
Fig. 7 is the B portion enlarged view in Fig. 6.
Fig. 8 is the amplification assumption diagram of buffering spool.
Fig. 9 is the amplification assumption diagram of the another kind of mode of execution of compression spool.
Embodiment
See in figure, the agent structure of this hydraulic type vibration damping structure is a columniform movable body 1, at the center position of movable body 1, is provided with step hole 3, so that toward the interior insertion body of rod of step hole 3.
In actual application, movable body 1 need to be assemblied in cylinder body, and movable body 1 is separated into compaction cavum and buffering cavity cylinder body, and in compaction cavum, for containing the compression member of hydraulic oil, buffering cavity is interior for containing the buffer portion of hydraulic oil.In movable body 1, be provided with vertically some passages, these passages are circumferentially uniform along movable body 1, and passage is linked up these two cavitys in cylinder body.The outer end of the body of rod reaches the outside of cylinder body, the closed end of cylinder body is fixed on corresponding position by the mode being actively coupled, the outer end of the body of rod is actively connected on object, take automobile as example, the closed end of cylinder body is movably fixed in vehicle bridge, and the outer end of the body of rod is connected in the bottom of car body actively.Between car body and vehicle bridge, also need to arrange spiral spring, this vibration damping structure is only that the axial deformation of spiral spring is blocked and reaches the object of vibration damping.
The compression spool 5 that dams face internal clearance and be provided with at some passages, is provided with other passage internal clearances and cushions spool 6.The outer end of compression spool 5 is all towards the compression member of fluid, and the outer end of buffering spool 6 is all towards the buffer portion of fluid.Movable body 1 is in compression member when motion towards fluid, and it is large that the aperture between compression spool 5 and passage becomes, and has higher speed while making movable body 1 to the buffer portion motion of fluid; Movable body 1 is in buffer portion when motion towards fluid, and the aperture between buffering spool 6 and passage diminishes, and make movable body 1, from the buffer portion of fluid, the motion to compression member has relatively slow speed.
All spools are all floating type by spring 7 and are connected in passage, specifically at passage internal thread, are connected with hollow bolt 2, and the outer end of hollow bolt 2 sinks in the end face of movable body 1, and spring 7 is connected to the inner end of hollow bolt 2.Movable body 1 is to compression member when motion of fluid, and suffered resistance is relatively little, and has comparatively faster speed; Movable body 1 is to buffer portion when motion of fluid, and suffered resistance is relatively large, and has relatively slow speed.
The outer end of buffering spool 6 is one-body molded a cylindrical plush copper 10 that has, between passage and plush copper 10, be provided with some along the axial arranged saturating groove 11 of passage, these saturating grooves 11 are circumferentially uniform along plush copper 10, groove 11 flows through for hydraulic oil thoroughly, the plush copper 10 of buffering on spool 6 can arrange relatively littlely with the distance between vias inner walls face like this, and passage can be by providing good leading role with joining combined into the axial motion that cushions spool 6 of plush copper 10.
Groove 11 can be arranged on the internal face of passage thoroughly, and now the outer circumferential face of plush copper 10 outer one end side portion is level and smooth circumferential surface.Groove 11 also can be arranged on the outer circumferential face of plush copper 10 thoroughly, the week that these saturating grooves 11 are distributed on plush copper 10 makes progress, the outer port part of groove 11 is positioned on the exterior edge face of plush copper 10 thoroughly, the bottom surface of groove 11 interior oral areas is connected by the inner bottom surface 12 being obliquely installed with inclined-plane 13 or the conical surface set in the interior one end side portion of plush copper 10 thoroughly, and intersect with the bottom surface of this saturating groove 11 and described inclined-plane 13 or the conical surface respectively at the two ends of inner bottom surface 12.
Under the situation on the interior distolateral formation of plush copper 10 inclined-plane 13, formed inclined-plane 13 is two, and the relative both sides of buffering spool 6 are located on these two inclined-planes 13 symmetrically, and the aperture between buffering spool 6 and passage is formed between inclined-plane 13 and the outer port part of passage.Buffering spool 6 has along the axially extended plane of passage, and corresponding with two inclined-planes 13, described plane is also two, the two ends on inclined-plane 13 respectively with side face and the Plane intersects of plush copper 10.Because form described plane on buffering spool 6, on buffering spool 6, planar section is relatively thin.In the situation that plush copper 10 reaches passage outside completely, the easy generation of buffering spool 6 is radially rocked, and on buffering spool 6, the intensity of this planar section can not guarantee.For overcoming these defects, one-body molded on the planar section of buffering spool 6 have a lug 15, and lug 15 is axial arranged along passage, and the outer side surface of lug 15 is positioned on the position of plush copper 10 outer circumferential faces.In addition, on the inner peripheral surface of passage that is equipped with buffering spool 6 one-body molded have interior to bulge loop 14, buffering spool 6 is with gap through in bulge loop 14.
Compression spool 5 be shaped as conical butt, the little head end of compression spool 5 is all towards the homonymy of movable body 1, the little head end that compresses spool 5 is all towards the compression member of fluid.When movable body 1 compresses componental movement to hydraulic oil, due to hydraulic oil pressurized, by passage, in buffering cavity, flow.Along with movable body 1 further moves, the outer end of compression spool 5 is subject to the axial inside pressure of hydraulic oil simultaneously, and compression spool 5 is under the effect of this pressure and move towards interior extreme direction.Passage and compression spool 5 interior distolateral between be formed with aperture, between the size of this aperture and the flow of hydraulic oil, be direct proportaion, aperture is larger, the flow of hydraulic oil is larger.And along with compression spool 5 is towards the further displacement of inner end, it is increasing that this aperture can become, hydraulic oil is in flow process, owing to being compressed the retardance of spool 5, thereby also just obtained deceleration, in aperture, become gradually large process, also the process to object vibration damping just.
The internal diameter that is equipped with the passage of compression spool 5 has variation, and this passage has diameter shrinkage part, in the inner of passage diameter shrinkage part, is formed with seam 9, and compression spool 5 is plugged in the diameter shrinkage part in passage through seam 9.The interior distolateral of compression spool 5, be formed with discoid convex body 8, the external diameter of convex body 8 is greater than the internal diameter of seam 9.On usual state, under the effect of spring 7, convex body 8 is fitted in the formed plane of seam 9.
For ease of compression spool 5, have good stability in movement process, one-body molded on the outer circumferential face of compression spool 5 have some guiding pieces 4, and the outer side surface of guiding piece 4 extends axially along compression spool 5.The guiding piece 4 showing in figure is four, and these four guiding pieces 4 are distributed on the side face of compression spool 5, and guiding piece 4 is along the radially setting of compression spool 5.These guiding pieces 4 measure-alike, the outer side surface of all guiding pieces 4 is all tangent with same circumferential surface, or the outer side surface of these guiding pieces 4 is positioned on same circumferential surface.
The shape of compression spool 5 also can be equipped with in the passage that compresses spool 5 and have diameter shrinkage part for cylindrical, in the inner of this diameter shrinkage part, is formed with seam 9, and compression spool 5 passes seam 9 and is plugged in the diameter shrinkage part of this passage.At the interior distolateral one-body molded of compression spool 5, have protrusion, a discoid convex body 8, convex body 8 is for fitting with seam 9 faces; On the outer circumferential face of compression spool 5, be provided with some guide grooves 16 that axially arrange along compression spool 5, guide groove 16 is positioned at the outside of convex body 8, and size self-pressure retractor spool 5 outer ends of guide groove 16 diminish gradually to the inner.The truncation surface of guide groove 16 is V-shaped, and the entrance point of guide groove 16 is positioned on compression spool 5 exterior edge faces, and the outlet end of guide groove 16 is positioned on the outer circumferential face of compression spool 5.
Described buffering spool 6 can be also cylindrical, on the outer circumferential face of buffering spool 6, also some intake chutes can be set, the structure of this intake chute is similar to the structure of above-mentioned guide groove 16, just in channel axis, make progress, intake chute and guide groove 16 opposite direction is set, the stub end of intake chute is towards the inner side of buffering spool 6, and the little head end of intake chute is towards the outer end of buffering spool 6, and the little head end of intake chute is positioned at the inner side of buffering spool 6 exterior edge faces.
Claims (10)
1. a hydraulic type vibration damping structure, comprise movable body, it is characterized in that, movable body is used for being immersed in fluid, movable body becomes buffer portion and compression member fluid partitioning, in movable body, be provided with the passage of linking up buffer portion and compression member, in the face that dams of some passages, be provided with compression spool, in other passages, be provided with buffering spool; Between compression spool and passage, have along with movable body becomes large aperture to the motion of compression member direction, between buffering spool and passage, there is the aperture diminishing to the motion of buffer portion direction along with movable body.
2. hydraulic type vibration damping structure according to claim 1, is characterized in that, described spool is all connected in passage by spring, at passage internal thread, is connected with hollow bolt, and spring is connected to the inner end of hollow bolt.
3. hydraulic type vibration damping structure according to claim 1 and 2, it is characterized in that, the end of described buffering spool has plush copper, on buffering spool, in the inner side of plush copper, is provided with inclined-plane or the conical surface, and the aperture between buffering spool and passage is formed between this inclined-plane or the conical surface and passage.
4. hydraulic type vibration damping structure according to claim 3, is characterized in that, one-body molded on the inner peripheral surface of passage that is equipped with buffering spool have a bulge loop, and the cross-under with gap of buffering spool is in bulge loop.
5. hydraulic type vibration damping structure according to claim 3, it is characterized in that, inclined-plane is two, and they are located at the relative both sides of buffering spool symmetrically, on buffering spool, there is along the axially extended plane of passage the inner on inclined-plane and the Plane intersects cushioning on spool.
6. hydraulic type vibration damping structure according to claim 5, it is characterized in that, plush copper is positioned at passage, on the side face of plush copper, be provided with some along the axially extended groove of passage, the two ends of the inner bottom surface being obliquely installed respectively with described inclined-plane and thoroughly in groove the bottom surface of oral area intersect.
7. hydraulic type vibration damping structure according to claim 6, is characterized in that, one-body molded on the planar section of buffering spool have a lug, and along the axial arranged of plush copper the footpath that is positioned at plush copper upwards, the outer side surface of lug is positioned at the outer circumferential face position of plush copper to lug.
8. hydraulic type vibration damping structure according to claim 1 and 2, it is characterized in that, the shape of described compression spool is frustoconical, be equipped with in the passage that compresses spool and there is diameter shrinkage part, the inner at this diameter shrinkage part is formed with seam, compression spool is plugged in the diameter shrinkage part of this passage through seam, has formed the aperture between compression spool and passage between compression spool and this seam.
9. hydraulic type vibration damping structure according to claim 8, is characterized in that, on the side face of compression spool, is provided with some guiding pieces, and the outer side surface of guiding piece extends axially along compression spool, and the footpath that guiding piece is positioned at compression spool makes progress.
10. hydraulic type vibration damping structure according to claim 1 and 2, it is characterized in that, described compression spool is cylindrical, be equipped with in the passage that compresses spool and there is diameter shrinkage part, the inner at this diameter shrinkage part is formed with seam, and compression spool is plugged in the diameter shrinkage part of this passage through seam; At the interior distolateral one-body molded of compression spool, have protrusion, a discoid convex body, convex body for and seam face fit; On the outer circumferential face of compression spool, be provided with some guide grooves along compression valve mandrel to setting, guide groove is positioned at the outside of convex body, and the size self-pressure retractor spool outer end of guide groove diminishes gradually to the inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179606.1U CN203847616U (en) | 2014-04-15 | 2014-04-15 | Hydraulic damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420179606.1U CN203847616U (en) | 2014-04-15 | 2014-04-15 | Hydraulic damping structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847616U true CN203847616U (en) | 2014-09-24 |
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ID=51560638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420179606.1U Expired - Fee Related CN203847616U (en) | 2014-04-15 | 2014-04-15 | Hydraulic damping structure |
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| Country | Link |
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| CN (1) | CN203847616U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883662A (en) * | 2014-04-15 | 2014-06-25 | 叶晓锋 | Hydraulic type vibration reducer |
| CN107091295A (en) * | 2017-06-28 | 2017-08-25 | 中车青岛四方车辆研究所有限公司 | Valve component, piston unit and oil-pressure damper |
-
2014
- 2014-04-15 CN CN201420179606.1U patent/CN203847616U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883662A (en) * | 2014-04-15 | 2014-06-25 | 叶晓锋 | Hydraulic type vibration reducer |
| CN103883662B (en) * | 2014-04-15 | 2016-05-11 | 叶骁锋 | Hydraulic vibration absorber |
| CN107091295A (en) * | 2017-06-28 | 2017-08-25 | 中车青岛四方车辆研究所有限公司 | Valve component, piston unit and oil-pressure damper |
| CN107091295B (en) * | 2017-06-28 | 2019-03-29 | 中车青岛四方车辆研究所有限公司 | Valve component, piston unit and oil-pressure damper |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20160415 |