CN114277620A - Rubber hydraulic composite node with damping gap - Google Patents
Rubber hydraulic composite node with damping gap Download PDFInfo
- Publication number
- CN114277620A CN114277620A CN202111451252.2A CN202111451252A CN114277620A CN 114277620 A CN114277620 A CN 114277620A CN 202111451252 A CN202111451252 A CN 202111451252A CN 114277620 A CN114277620 A CN 114277620A
- Authority
- CN
- China
- Prior art keywords
- liquid
- rubber
- mandrel
- damping
- inner sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 72
- 239000005060 rubber Substances 0.000 title claims abstract description 72
- 238000013016 damping Methods 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 130
- 238000007789 sealing Methods 0.000 claims description 44
- 150000001875 compounds Chemical class 0.000 claims description 22
- 229920001967 Metal rubber Polymers 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 238000002955 isolation Methods 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 210000000003 hoof Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
Images
Landscapes
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The invention relates to the technical field of vibration reduction, in particular to the technical field of vibration reduction of railway vehicles, and particularly discloses a rubber hydraulic composite node with damping gaps. The damping gap can enhance the damping effect of the liquid flowing in the liquid cavity, bubbles are not easy to generate, the phenomenon that the flow channel between the two liquid cavities is blocked by the debris abrasive particles in the liquid can be avoided, and the vibration isolation and damping performance of the hydraulic composite node is ensured.
Description
Technical Field
The invention relates to a rubber hydraulic composite node with a damping gap, which belongs to the technical field of vibration reduction.
Background
The hydraulic composite node is a connecting damping part widely applied to railway vehicles, and is mainly installed on a bogie frame of a vehicle to connect an axle box rotating arm and the bogie so as to improve the running stability and safety of the vehicle. The hydraulic composite node is provided with communicated cavity structures inside the rubber node, viscous liquid is injected into the cavity in advance, and when the hydraulic composite node is loaded, the liquid flows between the cavities to generate damping, so that vibration energy is consumed to achieve the purposes of vibration reduction and vibration isolation.
In the prior art, as the invention patent of '201910815514.5', the patent name is 'a split type liquid rubber composite node with damping through holes and a forming method', the liquid rubber composite node comprises an outer sleeve, a cover plate, a middle spacer sleeve, a rubber body and a mandrel, wherein the rubber body is vulcanized between the middle spacer sleeve and the mandrel, the cover plate covers the middle spacer sleeve, and the outer side of the cover plate and the middle spacer sleeve is sleeved with the outer sleeve; a liquid cavity is formed between the cover plate and the rubber body, the liquid cavity is separated by the middle spacer sleeve, liquid channels are formed in the rubber body and the mandrel, and the liquid cavities which are separated from each other are communicated with the liquid channels. The liquid cavities separated from each other are communicated by a liquid channel, so that the liquid flows only in the closed cavities formed in the liquid cavities and the liquid channel. Therefore, the rigidity of the liquid rubber composite node can be adjusted by adjusting the volume of the liquid cavity, particularly the dynamic rigidity of the liquid rubber composite node in a high-frequency state and a low-frequency state, so that the critical speed and the over-curve performance of a vehicle can be improved, the vehicle can be subjected to vibration reduction and energy absorption in the running process through the liquid rubber composite node, and the abrasion is reduced, but the liquid cavities are communicated through a shaft through hole penetrating through the mandrel, and the invention mainly has the following problems:
1. the inner diameter and the volume of the shaft through hole are usually small, when liquid in the two liquid cavities flows in the shaft through hole, the shaft through hole is easily blocked by debris abrasive particles in the liquid, a liquid flow channel of the two liquid cavities is blocked, and the use performance of the hydraulic composite node is influenced.
2. Because the inner diameter of the shaft through hole is usually small, when liquid flows in the shaft through hole, the flowing speed is changed suddenly, the pressure of some parts in the shaft through hole is lower than saturated vapor pressure, bubbles are generated in the liquid, and the dynamic rigidity stability of the hydraulic compound node is influenced.
3. Under the same operation condition, the hysteresis curve of the liquid flowing in the shaft through hole is relatively less and fuller, and the damping effect is also influenced.
In summary, in order to ensure the vibration isolation and damping effects of the hydraulic composite node, a hydraulic composite node which has more stable performance and is not easy to cause the blockage of a liquid flow passage between hydraulic cavities is urgently needed.
Disclosure of Invention
The invention aims to provide a rubber hydraulic composite node with damping gaps, wherein the damping gaps which are symmetrically arranged along the circumferential direction of a mandrel and are communicated with two liquid chambers are arranged on the mandrel, so that the damping effect of mutual flowing of liquid in the liquid chambers can be enhanced, the phenomenon that a flow channel between the two liquid chambers is blocked by debris and abrasive particles in the liquid is avoided, and the vibration isolation and damping performance of the hydraulic composite node is ensured.
In order to achieve the purpose, the invention provides the following technical scheme: a rubber hydraulic composite node with damping gaps comprises an integrally formed metal rubber combination body, wherein two cavities are formed in the metal rubber combination body; a core shaft is arranged in the metal rubber combination body in a penetrating manner, and the core shaft and the cavity of the metal rubber combination body form a liquid cavity of the hydraulic composite node together; the mandrel is provided with damping gaps which are communicated with the two liquid cavities and symmetrically distributed along the circumferential direction of the mandrel, and the damping gaps form flow channels for liquid in the two liquid cavities.
Preferably, the metal rubber assembly comprises a metal inner sleeve, a metal outer sleeve and a rubber body vulcanized between the inner sleeve and the outer sleeve, the inner sleeve comprises a hollow shaft, and the mandrel is fixedly connected in the hollow shaft; the liquid cavities are symmetrically arranged on two sides of the mandrel on the axial center line L2, and the damping gaps and the liquid cavities are correspondingly communicated with two sides of the radial center line L1.
Preferably, the length-width ratio of the damping gap is set according to the dynamic-static stiffness ratio of the hydraulic compound node.
Preferably, the aspect ratio of the damping gap is 100-30000.
Preferably, the intersection of the liquid cavity and the damping gap forms a liquid inlet and outlet, and the inlet and outlet are of a gradual necking structure gradually reduced from the liquid cavity to the damping gap.
Preferably, the inner sleeve is symmetrically provided with two through holes positioned at two sides of the axial center line L2, the rubber body is symmetrically provided with two liquid tanks correspondingly communicated with the through holes of the inner sleeve, and the two liquid chambers are formed by the through holes, the liquid tanks and the mandrel together; the profile of the inner wall of the through hole in the inner sleeve at the inlet and the outlet is a cambered surface profile I protruding towards the radial center line L1 of the hydraulic compound node, and the radius R of the cambered surface profile I is determined according to the resistance loss coefficient of liquid flow.
Preferably, the mandrel is provided with a groove correspondingly communicated with the through hole of the inner sleeve, and the two liquid cavities are formed by the through hole, the liquid groove and the groove together; the whole volume of the liquid cavity can be adjusted by adjusting the size of the groove.
Preferably, the groove wall of the liquid groove of the rubber body connected with the through hole of the inner sleeve is a vertical structure parallel to the radial center line L1 of the hydraulic compound node or an oblique structure inclined towards the side of the core axially far away from the radial center line L1.
Preferably, the axial connecting surface of the inner sleeve and the mandrel is provided with two annular sealing grooves which are positioned on the inner sleeve and distributed along the circumferential direction of the mandrel, and the two annular sealing grooves are positioned on two sides of the liquid cavity and are communicated with the liquid cavity; a V-shaped sealing element is arranged in the annular sealing groove; the annular sealing groove comprises a stop table which is gradually reduced from the liquid cavity to the inner side of the annular sealing groove, and the stop table and the mandrel jointly form a sealing inlet.
Preferably, the rubber body is of a saddle-shaped structure comprising middle rubber and hoof rubber at two sides, the liquid groove is formed in the middle rubber, and the rubber molded surface on the outer side surface of the hoof rubber is a cambered surface molded surface II protruding towards the mandrel; the inner sleeve is of an inverted I-shaped structure which is arranged corresponding to the rubber body of the saddle-shaped structure and comprises two side connecting discs which are fixedly connected to two ends of the hollow shaft, the rubber body is vulcanized between the side connecting discs and the hollow shaft, and the through hole is formed in the middle of the hollow shaft.
The technical effects are as follows: the damping gaps are symmetrically arranged on the two sides of the mandrel in the radial direction, the damping gaps are spherical surface annular structures, the circumferential volume is large, and the debris abrasive particles in the liquid cannot be blocked in the damping gaps; the flow velocity of the liquid in the damping gap changes smoothly, the pressure gradient is small, the cavitation phenomenon can be reduced, bubbles are not easy to generate, and the stability of dynamic rigidity can be fully ensured; the shape of the damping gap determines that the liquid flow time-lag curve is fuller and the damping effect is better.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a rubber hydraulic compound node in the embodiment of the invention.
Fig. 2 is a sectional view taken along a-a in fig. 1.
Fig. 3 is a sectional view taken in the direction B-B in fig. 1.
Fig. 4 is a partial enlarged view at E in fig. 2.
Fig. 5 is a partial enlarged view of fig. 1 at P.
Fig. 6 is a perspective view of the mandrel.
Fig. 7 is a schematic perspective view of the inner sleeve.
The reference numerals include: 1. a damping gap; 2. a mandrel; 3. a liquid chamber; 4. an inner sleeve; 5. a jacket; 6. a rubber body; 7. a hollow shaft; 8. an inlet and an outlet; 9. a through hole; 10. a liquid bath; 11. a cambered surface profile I; 12. a groove; 13. a trench wall; 14. an axial connection face; 15. an annular seal groove; 16. a V-shaped seal; 17. a stop table; 18. middle rubber; 19. a shoe rubber; 20. a cambered surface molded surface II; 21. a side connection disc; 22. a vertex angle portion; 23. a first side portion; 24. a second side part; 25. a stop end surface; sealing the inlet 26.
Detailed Description
The invention is described in further detail below with reference to figures 1-7.
As shown in fig. 1, the direction M is an axial direction of the hydraulic compound node, the direction N is a radial direction of the hydraulic compound node, L1 is a radial centerline of the hydraulic compound node, and L2 is an axial centerline of the hydraulic compound node, wherein a radial middle section of the radial centerline L1 is perpendicular to an axial middle section of the axial centerline L2.
A rubber hydraulic composite node with a damping gap 1 comprises an integrally formed metal rubber combination body, wherein two cavities are formed in the metal rubber combination body; a mandrel 2 is arranged in the metal rubber combination body in a penetrating manner, and the mandrel 2 and the cavity of the metal rubber combination body form a liquid cavity 3 of the hydraulic composite node together; as shown in fig. 1, the metal rubber assembly specifically includes a metal inner sleeve 4, a metal outer sleeve 5 and a rubber body 6 vulcanized between the inner sleeve 4 and the outer sleeve 5, a cavity of the metal rubber assembly is formed on the inner sleeve 4 and the rubber body 6, a liquid cavity 3 is formed by the mandrel 2, the inner sleeve 4 and the rubber body 6, and a viscous liquid is injected into the liquid cavity 3.
As shown in fig. 2 and 6, the mandrel 2 is provided with damping gaps 1 which are communicated with the two liquid chambers 3 and symmetrically distributed along the circumference of the mandrel 2, and the damping gaps 1 form flow channels for liquid in the two liquid chambers 3; when the vehicle body is loaded, pressure difference is formed in the liquid cavities 3, so that liquid flows in the two liquid cavities 3 through the damping gaps 1, and the liquid generates a damping effect in the flowing process to weaken impact load, so that the hydraulic compound node achieves better vibration isolation and vibration reduction effects. As shown in fig. 2, the damping gap 1 in this embodiment is a spherical annular structure provided on the circumferential side surface of the mandrel 2, so that the liquid can flow easily, the debris and the abrasive particles in the liquid can be prevented from being blocked, and the damping effect is good. The length-width ratio of the damping gap 1 is set according to the dynamic-static stiffness ratio of the hydraulic compound node under specific working conditions, the length-width ratio of the damping gap 1 is 100-30000, the length of the damping gap 1 is shown as H1 in fig. 3, the width of the damping gap 1 is shown as H2 in fig. 3, the length-width ratio of the damping gap 1, namely H1/H2, is 100-30000, and the length-width ratio of the damping gap 1 in this embodiment is specifically 5000; the length of the damping gap 1 is long, so that the flow area of liquid in the liquid cavity 3 can be increased, and the damping effect is enhanced.
As shown in fig. 7, the inner sleeve 4 includes a hollow shaft 7, when the mandrel 2 and the metal rubber assembly are assembled together, the mandrel 2 is fixedly connected in the hollow shaft 7, specifically, the mandrel 2 is assembled in the hollow shaft 7 in an interference manner, and then the connecting end S of the mandrel 2 and the inner sleeve 4 is welded to further ensure the sealing performance between the mandrel 2 and the inner sleeve 4. As shown in fig. 1 and 2, the liquid chambers 3 are symmetrically arranged on two sides of the mandrel 2 on the axial center line L2, the damping gaps 1 and the liquid chambers 3 are correspondingly communicated with two sides of the radial center line L1, specifically, the liquid chambers 3 are located on two sides of the axial middle section of the hydraulic compound node, and the damping gaps 1 and the liquid chambers 3 are integrally communicated with two sides of the radial middle section of the hydraulic compound node. As shown in fig. 1, two through holes 9 located at two sides of the axial center line L2 are symmetrically arranged on the inner sleeve 4, two liquid tanks 10 correspondingly communicated with the through holes 9 of the inner sleeve 4 are arranged on the rubber body 6, and the two liquid chambers 3 are formed by the through holes 9, the liquid tanks 10 and the mandrel 2; a person skilled in the art can also set a groove 12 correspondingly communicated with the through hole 9 of the inner sleeve 4 on the mandrel 2 according to actual needs, at the moment, the two liquid cavities 3 are formed by the through hole 9, the liquid groove 10 and the groove 12 together, the whole volume of the liquid cavities 3 can be adjusted by adjusting the size of the groove 12, so that the specific vibration starting frequency of the hydraulic composite node is adjusted, an ideal dynamic-static stiffness ratio is further realized under the specific vibration starting frequency, and the vibration isolation and damping performance of the hydraulic composite node is improved.
As shown in fig. 1 and fig. 2, the slot wall 13 of the liquid slot 10 of the rubber body 6 connected with the through hole 9 of the inner sleeve 4 is a vertical structure parallel to the radial center line L1 of the hydraulic compound node or an oblique structure inclined towards the mandrel 2 to the side far away from the radial center line L1, which is convenient for the forming and demoulding of the rubber body 6 and reduces the processing difficulty. In the vulcanization process of the rubber body 6, an insert matched with the liquid tank 10 needs to be placed in the liquid tank 10 of the rubber body 6, and after the rubber body 6 is processed, the insert is taken out from the liquid tank 10, so that the rubber body 6 is demoulded. When the groove wall 13 is a vertical structure parallel to the radial center line L1 of the hydraulic compound node, the insert can be directly taken out of the liquid groove 10 after the machining is finished; when the groove wall 13 is of an oblique line type structure which inclines towards the mandrel 2 to the side far away from the radial center line L1, namely the groove wall 13 is of a splayed structure which gradually increases towards the opening of the mandrel 2, the insert can be directly taken out from the liquid groove 10 without blocking; however, when the groove wall 13 is of a reverse V-shaped structure gradually reduced toward the opening of the mandrel 2, the reverse V-shaped insert engaged with the reverse V-shaped groove wall 13 is difficult to be taken out from the liquid groove 10, which makes it difficult to demold the rubber body 6. In the present embodiment, the groove wall 13 is preferably formed in a vertical structure.
Wherein, the intersection of the liquid cavity 3 and the damping gap 1 forms an inlet and an outlet 8 for liquid, as shown in fig. 4, the inlet and the outlet 8 are of a gradual necking structure which gradually shrinks from the liquid cavity 3 to the damping gap 1, so as to reduce the resistance of the liquid flowing into and out of the damping gap 1, and facilitate the free flow of the liquid in the two liquid cavities 3. As shown in fig. 4, the profile of the inner wall of the through hole 9 in the inner sleeve 4 at the inlet/outlet 8 is a cambered profile one 11 protruding towards the radial center line L1 of the hydraulic compound node, and the radius R of the cambered profile one 11 is determined according to the resistance loss coefficient of the liquid flow under specific working conditions.
As shown in fig. 1, an annular sealing groove 15 is formed in an axial connecting surface 14 of the inner sleeve 4 and the mandrel 2, and the annular sealing groove 15 is used for enhancing the sealing performance of the inner sleeve 4 and the mandrel 2 at the axial connecting surface 14; this annular seal groove 15 distributes on endotheca 4 along the circumference of dabber 2, and this annular seal groove 15 is located 3 both sides in liquid chamber and for two with 3 intercommunications in liquid chamber simultaneously, and two annular seal grooves 15 satisfy the sealed demand of the axial connection face 14 of 3 both sides in liquid chamber. The V-shaped sealing element 16 is arranged in the annular sealing groove 15 and specifically comprises a top corner part 22, a first side part 23 and a second side part 24, when the V-shaped sealing element 16 is placed in the annular sealing groove 15, the top corner part 22 abuts against the bottom wall of the annular sealing groove 15, the first side part 23 is limited on the inner wall of the annular sealing groove 15, which is far away from the mandrel 2, and the second side part 24 abuts against the mandrel 2; the annular sealing groove 15 comprises a stop table 17 which is gradually reduced from the liquid cavity 3 to the inner side of the annular sealing groove 15, the stop table 17 and the mandrel 2 form a sealing inlet 26, specifically, as shown in fig. 5, the stop table 17 comprises a stop end surface 25 positioned at the sealing inlet 26, and the mandrel 2 and the stop end surface 25 form the sealing inlet 26 of the V-shaped sealing element 16; the stopping end face 25 is obliquely arranged from the inside of the annular sealing groove 15 to the axial center line L2 of the hydraulic composite node, so that the stopping table 17 gradually shrinks towards the inside of the annular sealing groove 15, the V-shaped sealing element 16 is conveniently placed in the annular sealing groove 15, meanwhile, the stopping end face 25 which is obliquely arranged is beneficial to draining high-pressure liquid into the annular sealing groove 15 in which the V-shaped sealing element 16 is placed, when the hydraulic composite node is loaded, the impact pressure of the liquid which is drained into the annular sealing groove 15 in the liquid cavity 3 enables the first side part 23 and the second side part 24 of the V-shaped sealing element 16 to be opened and tightly abutted towards two sides, the sealing performance of the hydraulic composite node is further improved, the dynamic sealing effect is enhanced, the problem that the sealing at the axial connecting face 14 of the inner sleeve 4 and the mandrel 2 is insufficient is effectively solved, meanwhile, the stopping end face 11 which is obliquely arranged can also prevent the sealing element 9 from being separated from the annular groove 8, further ensuring the sealing performance.
As shown in fig. 1 and 3, the rubber body 6 is of a saddle-shaped structure including a middle rubber 18 and two side shoe rubbers 19, the rubber profile on the outer side surface of the shoe rubbers 19 is a second cambered surface profile 20 protruding towards the mandrel 2, and when the hydraulic compound node is loaded, the second cambered surface profile 20 can prevent rubber from being accumulated and broken, so that the fatigue life of the rubber body 6 is prolonged; as shown in fig. 1 and 7, the inner sleeve 4 is an inverted i-shaped structure corresponding to the rubber body 6 of the saddle-shaped structure, and includes two side connection plates 21 fixedly connected to two ends of the hollow shaft 7, the rubber body 6 is vulcanized between the side connection plates 21 and the hollow shaft 7, the through hole 9 is arranged in the middle of the hollow shaft 7, and the liquid tank 10 is arranged on the middle rubber 18 and is in fit with the through hole 9.
The above examples are only illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments of the present invention as required without any inventive contribution thereto after reading the present specification, but all such modifications are intended to be protected by the following claims.
Claims (10)
1. A rubber hydraulic composite node with damping gaps comprises an integrally formed metal rubber combination body, wherein two cavities are formed in the metal rubber combination body; a mandrel (2) is arranged in the metal rubber combination body in a penetrating way, and the mandrel (2) and the cavity of the metal rubber combination body form a liquid cavity (3) of the hydraulic composite node together; the mandrel (2) is provided with damping gaps (1) which are communicated with the two liquid chambers (3) and symmetrically distributed along the circumferential direction of the mandrel (2), and the damping gaps (1) form flow channels for liquid in the two liquid chambers (3).
2. The rubber hydraulic composite node with the damping gap according to claim 1, wherein the metal rubber assembly comprises a metal inner sleeve (4), a metal outer sleeve (5) and a rubber body (6) vulcanized between the inner sleeve (4) and the outer sleeve (5), the inner sleeve (4) comprises a hollow shaft (7), and the mandrel (2) is fixedly connected in the hollow shaft (7); the liquid cavity (3) is symmetrically arranged on two sides of the mandrel (2) on the axial center line L2, and the damping gap (1) and the liquid cavity (3) are correspondingly communicated with two sides of the radial center line L1.
3. Rubber hydrodynamic compound node with damping gap according to claim 2, characterized in that the length to width ratio of the damping gap (1) is set according to the dynamic-static stiffness ratio of the hydrodynamic compound node.
4. The rubber-hydraulic composite node with damping gap according to claim 3, characterized in that the aspect ratio of the damping gap (1) is 100-30000.
5. The rubber-hydraulic composite node with damping gaps according to claim 4, wherein the intersection of the liquid cavity (3) and the damping gap (1) forms an inlet and outlet (8) for liquid, and the inlet and outlet (8) is of a gradual necking structure which gradually decreases from the liquid cavity (3) to the damping gap (1).
6. The rubber hydraulic composite node with the damping gap as claimed in any one of claims 2 to 5, wherein the inner sleeve (4) is symmetrically provided with two through holes (9) located at two sides of the axial center line L2, the rubber body (6) is symmetrically provided with two liquid grooves (10) correspondingly communicated with the through holes (9) of the inner sleeve (4), and the two liquid chambers (3) are formed by the through holes (9), the liquid grooves (10) and the mandrel (2); the profile of the inner wall of the through hole (9) in the inner sleeve (4) at the inlet and the outlet (8) is a cambered surface profile I (11) protruding towards the radial center line L1 of the hydraulic compound node, and the radius R of the cambered surface profile I (11) is determined according to the resistance loss coefficient of liquid flow.
7. The rubber hydraulic composite node with the damping gap as claimed in claim 6, wherein the mandrel (2) is provided with a groove (12) correspondingly communicated with the through hole (9) of the inner sleeve (4), and the two liquid chambers (3) are formed by the through hole (9), the liquid groove (10) and the groove (12); the whole volume of the liquid cavity (3) can be adjusted by adjusting the size of the groove (12).
8. The rubber hydrodynamic compound node with damping gap as claimed in claim 7, characterized in that the flume (10) of the rubber body (6) and the groove wall (13) connected with the through hole (9) of the inner sleeve (4) are vertical structure parallel to the radial center line L1 of the hydrodynamic compound node or oblique structure inclined to the side far away from the radial center line L1 towards the mandrel (2).
9. The rubber hydraulic composite node with the damping gap as claimed in claim 8, wherein the axial connecting surface (14) of the inner sleeve (4) and the mandrel (2) is provided with two annular sealing grooves (15) which are located on the inner sleeve (4) and distributed along the circumferential direction of the mandrel (2), and the two annular sealing grooves (15) are located on two sides of the liquid cavity (3) and communicated with the liquid cavity (3); a V-shaped sealing element (16) is arranged in the annular sealing groove (15); the annular sealing groove (15) comprises a stop table (17) which is gradually reduced from the liquid cavity (3) to the inner side of the annular sealing groove (15), and the stop table (17) and the mandrel (2) jointly form a sealing inlet (26).
10. The rubber hydraulic composite node with the damping gap as claimed in claim 9, wherein the rubber body (6) is of a saddle-shaped structure comprising a middle rubber (18) and two side shoe rubbers (19), the liquid groove (10) is arranged on the middle rubber (18), and the rubber profile on the outer side surface of the shoe rubbers (19) is a cambered surface profile II (20) protruding towards the mandrel (2); the inner sleeve (4) is of an inverted I-shaped structure which is arranged corresponding to the rubber body (6) of the saddle-shaped structure and comprises two side connecting discs (21) which are fixedly connected to the two ends of the hollow shaft (7), the rubber body (6) is vulcanized between the side connecting discs (21) and the hollow shaft (7), and the through hole (9) is arranged in the middle of the hollow shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451252.2A CN114277620A (en) | 2021-12-01 | 2021-12-01 | Rubber hydraulic composite node with damping gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451252.2A CN114277620A (en) | 2021-12-01 | 2021-12-01 | Rubber hydraulic composite node with damping gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114277620A true CN114277620A (en) | 2022-04-05 |
Family
ID=80870508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111451252.2A Pending CN114277620A (en) | 2021-12-01 | 2021-12-01 | Rubber hydraulic composite node with damping gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114277620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115970914A (en) * | 2023-02-18 | 2023-04-18 | 北京赛赋医药研究院有限公司 | Centrifugal equipment and method for detecting cell protein by PCR Array technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252476A (en) * | 1978-09-12 | 1981-02-24 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Hydraulically operated mine prop with safety valve |
| US4869475A (en) * | 1987-08-04 | 1989-09-26 | Hutchinson | Hydraulic antivibratory support sleeves |
| US5251884A (en) * | 1991-04-23 | 1993-10-12 | Hutchinson | Hydraulic antivibration mounts for damping oscillations in rigid parts |
| FR2701524A1 (en) * | 1993-02-12 | 1994-08-19 | Hutchinson | Improvements made to hydraulic vibration-damping sleeves (bushes) |
| CN101619751A (en) * | 2009-07-24 | 2010-01-06 | 株洲时代新材料科技股份有限公司 | Method for manufacturing and assembling elastic joint rubber elastic element and product thereof |
| CN104315076A (en) * | 2014-09-12 | 2015-01-28 | 东风小康汽车有限公司重庆分公司 | Self-adapting variable-damping hydraulic pressure rubber vibration isolation device for automobile suspension |
-
2021
- 2021-12-01 CN CN202111451252.2A patent/CN114277620A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4252476A (en) * | 1978-09-12 | 1981-02-24 | Bochumer Eisenhutte Heintzmann Gmbh & Co. | Hydraulically operated mine prop with safety valve |
| US4869475A (en) * | 1987-08-04 | 1989-09-26 | Hutchinson | Hydraulic antivibratory support sleeves |
| US5251884A (en) * | 1991-04-23 | 1993-10-12 | Hutchinson | Hydraulic antivibration mounts for damping oscillations in rigid parts |
| FR2701524A1 (en) * | 1993-02-12 | 1994-08-19 | Hutchinson | Improvements made to hydraulic vibration-damping sleeves (bushes) |
| CN101619751A (en) * | 2009-07-24 | 2010-01-06 | 株洲时代新材料科技股份有限公司 | Method for manufacturing and assembling elastic joint rubber elastic element and product thereof |
| CN104315076A (en) * | 2014-09-12 | 2015-01-28 | 东风小康汽车有限公司重庆分公司 | Self-adapting variable-damping hydraulic pressure rubber vibration isolation device for automobile suspension |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115970914A (en) * | 2023-02-18 | 2023-04-18 | 北京赛赋医药研究院有限公司 | Centrifugal equipment and method for detecting cell protein by PCR Array technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110454537B (en) | Split type liquid rubber composite node rigidity adjusting structure and method | |
| JPH0226098B2 (en) | ||
| CN112065909B (en) | Dynamic stiffness characteristic adjusting method and liquid rubber composite node with auxiliary cavity | |
| CN114277620A (en) | Rubber hydraulic composite node with damping gap | |
| CN112096776A (en) | Integral liquid rubber composite node and rigidity adjusting method | |
| CN112112923A (en) | Multistage sealing method for cavity of liquid rubber composite node | |
| CN216279508U (en) | Integral wear-resisting metal seal ball valve | |
| JPS58203242A (en) | Suspension bush and manufacturing method thereof | |
| CN201671809U (en) | Check valve of plunger pump | |
| CN110499678B (en) | Split type liquid rubber composite node with damping through hole and forming method | |
| CN210510107U (en) | Inner sleeve for hydraulic bushing | |
| CN109268436A (en) | Hydraulic bushing | |
| CN111706638B (en) | Hydraulic composite bushing and sealing method thereof | |
| CN109268441B (en) | Hydraulic bushing | |
| CN210484496U (en) | Liquid composite bushing | |
| CN114251409A (en) | Saddle-shaped rubber hydraulic composite node and assembling method thereof | |
| CN111706639B (en) | Hydraulic composite bushing, runner for hydraulic composite bushing and forming method of runner | |
| CN109333346A (en) | Central water flooding formula sander | |
| CN209839050U (en) | Hydraulic bushing | |
| CN112112963A (en) | Dynamic and static stiffness decoupling method for liquid rubber composite node | |
| CN102200193B (en) | Plunger pump check valve | |
| CN109268438B (en) | Hydraulic bushing | |
| JPS6110138A (en) | Bush encapsulated with fluid | |
| CN209781554U (en) | Hydraulic bushing | |
| CN109268440B (en) | Auxiliary spring device for hydraulic bushing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220405 |
|
| RJ01 | Rejection of invention patent application after publication |