CN109268436A - Hydraulic bushing - Google Patents
Hydraulic bushing Download PDFInfo
- Publication number
- CN109268436A CN109268436A CN201811273566.6A CN201811273566A CN109268436A CN 109268436 A CN109268436 A CN 109268436A CN 201811273566 A CN201811273566 A CN 201811273566A CN 109268436 A CN109268436 A CN 109268436A
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- CN
- China
- Prior art keywords
- chamber
- runner
- sub
- auxiliary
- hydraulic
- 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.)
- Granted
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- 239000012530 fluid Substances 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000010412 perfusion Effects 0.000 claims description 14
- 238000004073 vulcanization Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000013016 damping Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
- F16F13/1409—Units of the bushing type, i.e. loaded predominantly radially characterised by buffering features or stoppers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
- F16F13/1445—Units of the bushing type, i.e. loaded predominantly radially characterised by method of assembly, production or treatment
- F16F13/1454—Sealing of units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
- F16F13/1463—Units of the bushing type, i.e. loaded predominantly radially characterised by features of passages between working chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The present invention provides a kind of hydraulic bushings, comprising: mandrel；It is set in the first runner body of the sleeve-shaped on mandrel, the first rubber bodies are filled in gap between mandrel and the first runner body, the first runner for hydraulic fluid is configured on the outer surface of first runner body, two main liquid cavities for accommodating hydraulic fluid are wherein diametrically opposite configured in the first rubber bodies, they are communicated with each other by first runner；Housing, compression type are set in the radial outside of first runner body；And at least one axially external seal assembly of first runner body is set, the auxiliary sap cavity for accommodating hydraulic fluid is collectively defined with housing.Seal assembly includes the support ring being set on mandrel comprising the radially protruding part in auxiliary sap cavity.The radially protruding part with the inner surface of housing is sealed contacts, so that auxiliary sap cavity is separated into the second sub- chamber in axially external the first sub- chamber and axially inner side.
Description
Technical field
The present invention relates to a kind of hydraulic bushings for vehicle, especially rail vehicle.
Background technique
Hydraulic bushing is widely applied a kind of part in vehicle (such as automobile and rail vehicle), is mostly installed at vehicle
Suspension or bogie on, be used for buffering vibration and impact, to improve the stability and safety of vehicle driving.
Chinese patent literature CN108150536A discloses a kind of hydraulic bushing.The hydraulic bushing includes mandrel, is set in
First runner body on the outside of mandrel, and compress the housing for being set in the external side of first runner.Mandrel and first runner body it
Between gap in be filled with the first rubber bodies, constructed on the outer surface of first runner body fluted.The diameter in the first rubber bodies
To two sap cavities being relatively configured with for accommodating liquid, further groove and housing surround runner, and two sap cavities pass through runner
Connection.By the mobility between the hydraulic fluid in two sap cavities, the rigidity of adjustable hydraulic bushing, to realize raising
Vehicle driving, especially in the stability of Ackermann steer angle.
However in above-mentioned hydraulic bushing, the range of rigidity and damping adjusting is still limited.Therefore, uncommon in the art
Prestige provides a kind of hydraulic bushing, and having can be higher to provide for vehicle in the rigidity and damping of wider upper variation
Traveling stability and safety.
Summary of the invention
The present invention is intended to provide a kind of novel hydraulic bushing, it can be in the radial and axial upper function for realizing variation rigidity
Energy.
According to the present invention, a kind of hydraulic bushing is provided, comprising: mandrel；It is arranged the of sleeve-shaped on the mandrel
One runner body is filled with the first rubber bodies in the gap between the mandrel and the first runner body, described first-class
The first runner for hydraulic fluid is configured on the outer surface of road body, wherein in first rubber bodies diametrically opposite
Two main liquid cavities for accommodating hydraulic fluid are configured with, described two main liquid cavities are communicated with each other by the first runner；Outside
Set, compression type are set in the radial outside of the first runner body；And at least one of the first runner body is set
Axially external seal assembly, the seal assembly and the housing collectively define the auxiliary liquid for accommodating hydraulic fluid
Chamber.Wherein, the seal assembly includes the support ring being arranged on the mandrel, and the support ring includes being in the auxiliary liquid
Intracavitary radially protruding part, the radially protruding part with the inner surface of the housing is sealed contacts, thus by the auxiliary liquid
Chamber is separated into the second sub- chamber in axially external the first sub- chamber and axially inner side.
In a preferred embodiment, the support ring include for by it is described auxiliary sap cavity the first sub- chamber and second
The second flow channel that sub- chamber communicates with each other.
In a preferred embodiment, continuous on inner surface of the second flow channel by being formed in the support ring
Groove is formed, wherein the groove is connected in axially external first end with the described first sub- chamber, and is in axially inner side
Second end be connected with the described second sub- chamber.
In a preferred embodiment, it is equipped with hydraulic fluid perfusion channel in the support ring, is used for described auxiliary
Liquid-aid cavity injects hydraulic fluid.
In a preferred embodiment, the hydraulic fluid perfusion channel includes lead to the support ring axially external
The horizontal branch of end, and lead to the vertical branch of the first sub- chamber of the auxiliary sap cavity.
In a preferred embodiment, the first end of the groove is divided by the vertical of the hydraulic fluid perfusion channel
First sub- chamber described in Zhi Eryu is connected.
In a preferred embodiment, the support ring further includes the auxiliary rubber body of vulcanization on it, so that described
Radially protruding part by the auxiliary rubber body with the inner surface of the housing is sealed contacts.
In a preferred embodiment, the auxiliary rubber body includes for being formed with the axial end portion of the runner body
The first part of sealed contact, the second part for forming sealed contact with the axial end portion of the housing, Yi Jiyong
The Part III of sealed contact is formed in the inner surface with the housing, wherein the Part III is in institute in the axial direction
It states between first part and second part.
In a preferred embodiment, it is embedded in the first part of the auxiliary rubber body and second part just
The gasket of property.
In a preferred embodiment, the cross-sectional area of the first runner and length are according to required for hydraulic bushing
Radial dynamic rate determines, and the cross-sectional area of the second flow channel and the length axial dynamic according to required for hydraulic bushing
Rigidity determines.
Hydraulic bushing according to the present invention all has variation rigidity characteristic, the degree of stiffness variation in the axial direction and radially
With excitation amplitude and frequency dependence.Due to assisting the presence of sap cavity, the damping effect in the axial direction of the hydraulic bushing is improved, is reached
Better effectiveness in vibration suppression is arrived.Meanwhile the connection between the auxiliary sap cavity of hydraulic bushing passes through second be arranged in support ring
Runner is realized, without being arranged additional part in auxiliary sap cavity.This is just sufficiently used in auxiliary sap cavity
Space, and further enhance the effect for the variation rigidity that hydraulic bushing can be provided.
Detailed description of the invention
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein:
Fig. 1 schematically shows the cross-sectional view of hydraulic bushing according to an embodiment of the invention.
Fig. 2 is showing the enlarged view in the auxiliary sap cavity region in hydraulic bushing shown in Fig. 1.
Fig. 3 shows the structure of the unvulcanized support ring for having rubber bodies, especially shows the hydraulic fluid in support ring
Perfusion channel and second flow channel.
In the accompanying drawings, identical component makes to be denoted by the same reference numerals.Attached drawing is not drawn according to actual ratio
System.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.It should be noted that term " axial direction " herein and
" radial direction " respectively refers to the horizontal and vertical direction in Fig. 1.
Fig. 1 schematically shows hydraulic bushing 100 according to an embodiment of the invention.As shown in Figure 1, hydraulic lining
Set 100 include mandrel 10, be arranged in mandrel 10 radial outside first runner bodies 20, and be set in a manner of compression the
The housing 30 of the radial outside of one runner body 20.First runner body 20 is normally constructed to the form of sleeve member.Mandrel 10 is usually
Preformed member, and in the embodiment shown in fig. 1, it is configured to the form of Step Shaft.It the both ends of mandrel 10 for example can be with rail
The bogie of road train is connected, and housing 30 is connected with positioning arm.The also settable optional inner sleeve 15 on mandrel 10 is such as schemed
Shown in 1.Two axial end portions of housing 30 are radially bent towards mandrel 10, so as to form flange 32, to be conducive to liquid
Press the sealing of bushing 100.
The first rubber bodies 40 are filled in gap between mandrel 10 and first runner body 20.It will be understood, however, that
In the case where being provided with inner sleeve 15, the first rubber bodies 40 be can be filled between inner sleeve 15 and first runner body 20.In the first rubber
Two main liquid cavities 45 for accommodating hydraulic fluid are provided on body 40, they are preferably configured to diametrically opposed.Also
It is to say, the two main liquid cavities 45 all only partly extend in the circumferential, and diametrically opposed.In the outer of first runner body 20
Constructed on surface it is fluted, can spiral circle distribution form.In the assembled state, housing 30 is pressed on first runner
On body 20, so that the groove on first runner body 20 is formd for hydraulic fluid in the first runner 42 wherein flowed.First
The both ends of runner 42 are connected to two main liquid cavities 45 respectively.In addition, being configured with the use being connected to first runner 42 on housing 30
In the liquid injection hole (not shown) of injection hydraulic fluid.
When track train resists the snakelike operation phase in straightway, wheel can afford high-frequency vibration, and cross curve in low speed
When, wheel can afford low-frequency vibration.Under above two operating condition, the movement of wheel can drive mandrel 10 and housing 30 that phase occurs
To movement, so that expansion and contraction can respectively occur for the main liquid cavity in front and the main liquid cavity in rear.In this way, hydraulic
Fluid just can be flowed between two main liquid cavities 45 by first runner 42, to adjust accordingly hydraulic bushing 100
Rigidity so that train keep stable operation.The rigidity of this variation is an important performance of hydraulic bushing 100.
The features described above and function of hydraulic bushing are as known in the art, such as can be refering to the Chinese special of the applicant
Sharp document CN108150536A, the patent document are incorporated herein by reference.
According to the present invention, as shown in Figure 1, the two in the axial direction end of first runner body 20 is by 50 envelope of seal assembly
It closes, to form the closed chamber for being used to accommodate hydraulic fluid, i.e. main liquid cavity 45.Seal assembly 50 includes the support ring of rigidity
60, it is mounted on mandrel 10.In the illustrated embodiment, mandrel 10 is configured to multi-diameter shaft, and therefore, support ring 60 is preferably installed
At the hierarchic structure of mandrel 10, to form good positioning and to be more stably supported.Vulcanization has the in support ring 60
Two rubber bodies 70 have been embedded in the gasket 55,56 of rigidity in the second rubber bodies 70 (see Fig. 2).In this way, support ring 60 and gasket
55,56 one is formed by the second rubber bodies 70.
If Fig. 2 is more clearly illustrated, the second rubber bodies 70 of vulcanization include the part separated in two axial directions, i.e., close
The inboard portion 72 of the axial end portion of first runner body 20, and the exterior portion 74 of the axial end portion close to housing 30.Pass through
This set, the outer surface of the axial end portion of the inboard portion 72 and first runner body 20 of the second rubber bodies 70 form sealing, and
The exterior portion 74 of second rubber bodies 70 and the axial end portion of housing 30 (are specifically formed at the axial end portion of housing 30
Flange 32 inner surface) formed sealing.In this way, in the inboard portion 72 of the second rubber bodies 70, the outside of the second rubber bodies 70
Closed auxiliary sap cavity 80 is formd between part 74, support ring 60 and housing 30, wherein hydraulic fluid can be accommodated.However with
Unlike main liquid cavity 45, the auxiliary sap cavity 80 in each seal assembly 50 is configured to fully extend in the circumferential, that is, auxiliary
Sap cavity 80 extended 360 degree in the circumferential.It should be noted that auxiliary sap cavity 80 is configured to not be connected to main liquid cavity 45.
In preferred embodiment as shown in the figure, support ring 60 further includes the protruding portion 62 extended radially out.It is prominent
Portion 62 is presented axially between the inboard portion 72 and exterior portion 74 of the second rubber bodies 70.According to the present invention, support ring 60
Protruding portion 62 be in auxiliary sap cavity 80, and extend radially out always, it is close until being formed with the inner surface of housing 30
The contact of envelope formula.
Preferably, as shown in Fig. 2, being again provided with the third portion of the second rubber bodies 70 on the protruding portion 62 of support ring 60
Divide 76.In this way, support ring 60 by the Part III 76 of the second rubber bodies 70 and the inner surface of housing 30 formed it is sealed contact,
To which sap cavity 80 will be assisted to be separated into the first sub- chamber 82 and the second sub- chamber 84 adjacent to each other in two axial directions.As shown, auxiliary
The sub- chamber 82 of the first of liquid-aid cavity 80 is in axially external, and the second sub- chamber 84 is in axially inner side.
According to the present invention, second flow channel is equipped on the inner surface of support ring 60 (surface being in contact with mandrel 10)
96, such as formed by continuous groove.It (is in the embodiment shown in Figure 2 axial direction that the second flow channel 96, which is configured to one end,
Outer end) with auxiliary sap cavity 80 the first sub- chamber 82 be connected, and the other end (being in the embodiment shown in Figure 2 axial inner ends) with it is auxiliary
The sub- chamber 84 of the second of liquid-aid cavity 80 is connected.In this way, the first sub- chamber 82 adjacent to each other in the axial direction of sap cavity 80 is assisted
It is interconnected with the second sub- chamber 84 by second flow channel 96.In this way, hydraulic fluid just can be in the first son of auxiliary sap cavity 80
It is flowed between chamber 82 and the second sub- chamber 84.With the flowing of hydraulic fluid, enable the rigidity of hydraulic bushing 100 in the axial direction
Change in the larger context, enhance the effect of the variation rigidity in the axial direction of hydraulic bushing 100, reaches axial low frequency Low rigidity
With the purpose of high frequency high rigidity.
In addition, the radially protruding part 62 of support ring 60 can generate axial direction when hydraulic bushing 100 bears axial sinusoidal excitation
On move back and forth, thus squeeze be located at its at left and right sides of the first sub- chamber 82 and the second sub- chamber 84.In this way, wherein in a son
Internal high pressure can be generated in chamber (such as first sub- chamber 82), and another sub- chamber (such as second sub- chamber 84) correspondingly generates inside
Low pressure, so that hydraulic fluid can flow into the sub- chamber with internal low-voltage from the sub- chamber (such as first sub- chamber 82) with internal high pressure
(such as second sub- chamber 84).Due to pressure difference existing between two sub- chambers, hydraulic bushing 100 is caused to produce in axial direction
Variation rigidity.Which further enhances the effect of the axial variation rigidity of hydraulic bushing 100, reach low frequency Low rigidity and the height in axial direction
The purpose of frequency high rigidity.
In addition, since support ring 60 passes through the inner surface formation sealing of the Part III 76 and housing 30 of the second rubber bodies 70
Formula contact, the Part III 76 of the second rubber bodies 70 can also provide the displacement of variation radially.This also has to a certain extent
Conducive to the stiffness variation radially of hydraulic bushing 100.
In addition, enabling hydraulic fluid in auxiliary liquid by the second flow channel 96 on the inner surface that is provided with support ring 60
It is flowed between the sub- chamber 82 of the first of chamber 80 and the second sub- chamber 84, so that not needing to add additional auxiliary flow in auxiliary sap cavity 80
Road body, so as to fully utilize the space in auxiliary sap cavity 80.In this way, being formed by hydraulic bushing 100 with more compact
Structure.Especially, when product bears axial load, hydraulic fluid is by second flow channel 96 in the first son for assisting sap cavity 80
It is flowed back and forth between chamber 82 and the second sub- chamber 84, so that hydraulic fluid is in through the entrance of second flow channel 96, outlet and runner
Flow path when generate damping.This is embodied in hydraulic fluid and flows through caused by above-mentioned zone along stroke pressure loss and part pressure
Power loss.Which further enhances the effects of the variation rigidity in the axial direction of hydraulic bushing 100.
It is not intended to be bound by any theory, according to the present invention, the second flow channel 96 in sap cavity 80 is assisted to be mainly used to
The variation rigidity in axial direction is provided for hydraulic bushing 100, and the first runner 42 in main liquid cavity 45 is mainly used to as hydraulic bushing 100
Variation rigidity radially is provided.Therefore, the geometric parameters such as cross-sectional area and length of first runner 42 and second flow channel 96 can be with
It is designed according to the requirement of radial variation rigidity and axial variation rigidity for hydraulic bushing 100.
According to the present invention, the gasket 55 of rigidity has been respectively embedded into the exterior portion 74 of rubber bodies 70 and inboard portion 72
With 56, to provide a degree of axial rigidity for hydraulic bushing 100.Other than the effect of axial rigidity is provided, pad
Piece 56 can also squeeze the second adjacent rubber bodies 70, to sufficiently ensure main liquid cavity 45 and assist the hydraulic fluid in sap cavity 80
Sealing effect.Dummy slider 55 is then capable of the second rubber bodies 70 with the flange 32 of metal-coating 30 and between the two
The sealing for auxiliary sap cavity 80 is collectively formed in exterior portion 74.The leakproofness of sap cavity 80 is assisted to obtain further as a result,
It improves.
According to the present invention, hydraulic fluid perfusion channel 90 is additionally provided in support ring 60.As shown in Figures 2 and 3, flow of pressurized
Body perfusion channel 90 include lead to support ring 60 axial end portion horizontal branch 92 and one end be connected to horizontal branch 92 and
The other end leads to the vertical branch 94 of auxiliary sap cavity 80.In this way, can use flow of pressurized after hydraulic bushing 100 assembles
Body perfusion channel 90 injects hydraulic fluid to auxiliary sap cavity 80.After injection is completed, plug (not shown) can be used for example will
The horizontal branch 92 of hydraulic fluid perfusion channel 90 is blocked.It alternatively, can also be by the way that steel ball be squeezed into entering for horizontal branch 92
Mouth comes sealed hydraulic fluid perfusion channel 90.
As shown in Fig. 2, the vertical branch 94 of hydraulic fluid perfusion channel 90 be arranged to lead to auxiliary sap cavity 80 in axis
The sub- chamber 82 of first outward.Thus, it is possible to simplify structure, and difficulty of processing is reduced, save the cost.
As shown in Fig. 2, a preferred embodiment according to the present invention, first with auxiliary sap cavity 80 of second flow channel 96
Vertical branch 94 and first sub- chamber of auxiliary sap cavity 80 of that the connected one end of sub- chamber 82 by hydraulic fluid perfusion channel 90
82 are connected.Structure is just further simplified in this way, reduces difficulty of processing, save the cost.
It should be noted that being required to setting seal assembly at the axial ends of first runner body.The two sealing groups
Part can be seal assembly 50 as described above, can also use seal assembly 50 as described above with only one of them, and another
One uses common sealing element.This common sealing element only needs provide sealing effect to form closed main liquid cavity i.e.
Can, it is that those skilled in the art is easy design.
Although by reference to preferred embodiment, invention has been described, the case where not departing from the scope of the present invention
Under, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as there is no structures to rush
Prominent, items technical characteristic mentioned in the various embodiments can be combined in any way.The invention is not limited to texts
Disclosed in specific embodiment, but include all technical solutions falling within the scope of the claims.
Claims (10)
1. a kind of hydraulic bushing, comprising:
Mandrel；
It is arranged the first runner body of sleeve-shaped on the mandrel, the gap between the mandrel and the first runner body
The first rubber bodies are inside filled with, the first runner for hydraulic fluid is configured on the outer surface of the first runner body,
In, two main liquid cavities for accommodating hydraulic fluid, described two masters are diametrically opposite configured in first rubber bodies
Sap cavity is communicated with each other by the first runner；
Housing, compression type are set in the radial outside of the first runner body；And
At least one axially external seal assembly of the first runner body is set, and the seal assembly and the housing are total
The auxiliary sap cavity for accommodating hydraulic fluid is defined together；
Wherein, the seal assembly includes the support ring being arranged on the mandrel, and the support ring includes being in the auxiliary
Radially protruding part in sap cavity, the radially protruding part with the inner surface of the housing is sealed contacts, thus by the auxiliary
Sap cavity is separated into the second sub- chamber in axially external the first sub- chamber and axially inner side.
2. hydraulic bushing according to claim 1, which is characterized in that the support ring includes for by the auxiliary sap cavity
The first sub- chamber and the second flow channel that communicates with each other of the second sub- chamber.
3. hydraulic bushing according to claim 2, which is characterized in that the second flow channel is by being formed in the support ring
Continuous groove on inner surface is formed, wherein the groove is in axially external first end and the described first sub- chamber phase
Even, the second end for being in axially inner side is connected with the described second sub- chamber.
4. hydraulic bushing according to claim 3, which is characterized in that it is logical to be equipped with hydraulic fluid perfusion in the support ring
Road, for injecting hydraulic fluid to the auxiliary sap cavity.
5. hydraulic bushing according to claim 4, which is characterized in that the hydraulic fluid perfusion channel is described including leading to
The horizontal branch of the axially external end of support ring, and lead to the vertical branch of the first sub- chamber of the auxiliary sap cavity.
6. hydraulic bushing according to claim 5, which is characterized in that the first end of the groove passes through the hydraulic fluid
The vertical branch of perfusion channel and be connected with the described first sub- chamber.
7. according to claim 1 to hydraulic bushing described in any one of 6, which is characterized in that the support ring further includes vulcanization
Auxiliary rubber body on it, so that the radially protruding part is sealed by the inner surface of the auxiliary rubber body and the housing
Formula contact.
8. hydraulic bushing according to claim 7, which is characterized in that the auxiliary rubber body include for the runner
The axial end portion of body forms the first part of sealed contact, for forming sealed contact with the axial end portion of the housing
Second part, and the Part III for forming sealed contact with the inner surface of the housing, wherein the Part III
In the axial direction between the first part and second part.
9. hydraulic bushing according to claim 8, which is characterized in that in the first part and second of the auxiliary rubber body
Rigid gasket is embedded in part.
10. the hydraulic bushing according to any one of claim 2 to 9, which is characterized in that the cross section of the first runner
Long-pending and length is determined according to radial direction dynamic rate required for hydraulic bushing, and the cross-sectional area and length of the second flow channel
It is determined according to axial direction dynamic rate required for hydraulic bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273566.6A CN109268436B (en) | 2018-10-30 | 2018-10-30 | Hydraulic bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273566.6A CN109268436B (en) | 2018-10-30 | 2018-10-30 | Hydraulic bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109268436A true CN109268436A (en) | 2019-01-25 |
| CN109268436B CN109268436B (en) | 2024-04-09 |
Family
ID=65194015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811273566.6A Active CN109268436B (en) | 2018-10-30 | 2018-10-30 | Hydraulic bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268436B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706639A (en) * | 2020-05-27 | 2020-09-25 | 株洲时代新材料科技股份有限公司 | Hydraulic composite bushing, runner for hydraulic composite bushing and forming method of runner |
| CN112065909A (en) * | 2020-08-18 | 2020-12-11 | 株洲时代瑞唯减振装备有限公司 | Dynamic stiffness characteristic adjusting method and liquid rubber composite node with auxiliary cavity |
| CN113074215A (en) * | 2021-03-30 | 2021-07-06 | 厦门大学 | STM measuring device of high stability |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111706639A (en) * | 2020-05-27 | 2020-09-25 | 株洲时代新材料科技股份有限公司 | Hydraulic composite bushing, runner for hydraulic composite bushing and forming method of runner |
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| CN112065909B (en) * | 2020-08-18 | 2022-08-26 | 株洲时代瑞唯减振装备有限公司 | Dynamic stiffness characteristic adjusting method and liquid rubber composite node with auxiliary cavity |
| CN113074215A (en) * | 2021-03-30 | 2021-07-06 | 厦门大学 | STM measuring device of high stability |
| CN113074215B (en) * | 2021-03-30 | 2022-04-26 | 厦门大学 | STM measuring device of high stability |
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| CN109268436B (en) | 2024-04-09 |
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