CN109268438A - Hydraulic bushing - Google Patents
Hydraulic bushing Download PDFInfo
- Publication number
- CN109268438A CN109268438A CN201811273607.1A CN201811273607A CN109268438A CN 109268438 A CN109268438 A CN 109268438A CN 201811273607 A CN201811273607 A CN 201811273607A CN 109268438 A CN109268438 A CN 109268438A
- Authority
- CN
- China
- Prior art keywords
- runner
- hydraulic bushing
- hydraulic
- sap cavity
- sub
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 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 11
- 239000011148 porous material Substances 0.000 claims description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 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
- 238000004073 vulcanization Methods 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
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004043 responsiveness Effects 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
-
- 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 first runner body, the first runner for hydraulic fluid is configured on the outer surface of first runner body, wherein, two main liquid cavities for accommodating hydraulic fluid are 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.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 radially protruding part is equipped with the intercommunicating pore axially extended, and being used for will be described
First sub- chamber and the second sub- chamber connection.
In a preferred embodiment, the radially protruding part includes multiple intercommunicating pores being uniformly distributed circumferentially.
In a preferred embodiment, the seal assembly further includes the second rubber vulcanized in the support ring
Body so that the radially protruding part by second rubber bodies with the inner surface of the housing is sealed contacts.
In a preferred embodiment, second rubber bodies include being formed with the axial end portion of the first runner body
The axial end portion of the first part of sealed contact and the housing forms the second part of sealed contact, and is located at institute
State the Part III that sealed contact is formed in radially protruding part and with the inner surface of the housing.
In a preferred embodiment, it is embedded in the first part of second rubber bodies and second part just
The gasket of property.
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 main liquid cavity is not connected to each other with the auxiliary sap cavity.
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 intercommunicating pore and the length axial dynamic according to required for hydraulic bushing are rigid
Degree is to determine.
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 of the hydraulic bushing in the axial direction is improved, is reached
Better effectiveness in vibration suppression is arrived.Meanwhile the connection between two sub- chambers of the auxiliary sap cavity of hydraulic bushing passes through radially protruding part
Intercommunicating pore realize, take full advantage of the space in auxiliary sap cavity, further enhance the change that hydraulic bushing can be provided rigid
The effect of degree.
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.
Fig. 4 shows that vulcanization thereon has the structure of the support ring of rubber bodies.
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 crosses curve in low speed to can afford high-frequency vibration
When, the wheel rim taken turns pair can recline rail, and vibration frequency is decreased obviously at this time.Under above two operating condition, the movement of wheel can be driven
Make mandrel 10 and housing 30 that relative motion occur, so that the main liquid cavity in front and the main liquid cavity in rear can respectively be sent out
Raw expansion and contraction.In this way, hydraulic fluid just can be flowed between two main liquid cavities 45 by first runner 42, thus phase
Have adjusted the rigidity of hydraulic bushing 100 with answering, so that train keeps stable operation.The rigidity of this variation is hydraulic bushing 100
An important performance.
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, the connection axially extended is offered in the protruding portion 62 of support ring 60 extended radially out
Hole 90, so that the first sub- chamber 82 and the second sub- chamber 84 adjacent to each other in the axial direction for assisting sap cavity 80 are interconnected.In this way, liquid
Pressure fluid just can flow between the first sub- chamber 82 and the second sub- chamber 84 of auxiliary sap cavity 80.With the flowing of hydraulic fluid,
The rigidity of hydraulic bushing 100 in the axial direction is changed in the larger context, in the axial direction for enhancing hydraulic bushing 100
Variation rigidity effect, achieve the purpose that axial low frequency Low rigidity and high frequency high rigidity.
In addition, when hydraulic bushing 100 bears axial sinusoidal excitation, the protruding portion 62 of support ring 60 extended radially out
Moving back and forth in axial direction can be generated, to squeeze the first sub- chamber 82 and the second sub- chamber 84 being located at left and right sides of it.In this way, its
In can generate internal high pressure in a sub- chamber (such as first sub- chamber 82), and another sub- chamber (such as second sub- chamber 84) is corresponding
Ground generates internal low-voltage, so that hydraulic fluid can be flowed into from the sub- chamber (such as first sub- chamber 82) with internal high pressure has inside
The sub- chamber (such as second sub- chamber 84) of low pressure.Due to pressure difference existing between two sub- chambers, hydraulic bushing 100 is caused to generate
Variation rigidity in axial direction.Which further enhances the effects of the axial variation rigidity of hydraulic bushing 100, and it is low just to reach axial low frequency
The purpose of degree and high 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 sap cavity 80 by the intercommunicating pore 90 being provided in radially protruding part 62
It is flowed between first sub- chamber 82 and the second sub- chamber 84, so that do not need to add additional auxiliary flow body in auxiliary sap cavity 80,
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 intercommunicating pore in the first sub- chamber 82 and second for assisting sap cavity 80
It is flowed back and forth between sub- chamber 84, so that hydraulic fluid generates when through the entrance of intercommunicating pore 90, outlet and hole internal channel
Damping.This is embodied in hydraulic fluid and flows through caused by above-mentioned zone along stroke pressure loss and local pressure loss.This into
One step enhances the effect of the variation rigidity in the axial direction of hydraulic bushing 100.
Be not intended to be bound by any theory, according to the present invention, assist sap cavity 80 in intercommunicating pore 90 be mainly used to for
Hydraulic bushing 100 provides the variation rigidity in axial direction, and the first runner 42 in main liquid cavity 45 is mainly used to mention for hydraulic bushing 100
For variation rigidity radially.Therefore, the geometric parameters such as cross-sectional area and length of first runner 42 and intercommunicating pore 90 can basis
The requirement of radial variation rigidity and axial variation rigidity for hydraulic bushing 100 designs.
In a preferred embodiment, in support ring 60 circumferentially on be uniformly arranged six companies being separated from each other
Through-hole 90.In this way, mobility of the hydraulic fluid between the first sub- chamber 82 and the second sub- chamber 84 of auxiliary sap cavity 80
It is improved, thus further improves the responsiveness of 100 pairs of hydraulic bushing axial variation rigidities.
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 95 is additionally provided in support ring 60.As shown in figure 3, hydraulic fluid
Perfusion channel 95 includes that the horizontal branch 96 for leading to the axial end portion of support ring 60 and one end are connected to and another with horizontal branch 96
The vertical branch 94 of auxiliary sap cavity 80 is led in one end.In this way, can use hydraulic fluid after hydraulic bushing 100 assembles
Perfusion channel 95 injects hydraulic fluid to auxiliary sap cavity 80.After injection is completed, plug (not shown) can be used for example by liquid
The horizontal branch 96 in pressure fluid perfusion channel 95 is blocked.It alternatively, can also be by the way that steel ball to be squeezed into the entrance of horizontal branch 96
Come sealed hydraulic fluid perfusion channel 95.
As shown in Fig. 2, the vertical branch 94 of hydraulic fluid perfusion channel 95 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.
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 radially protruding part is equipped with the company axially extended
Through-hole, for the described first sub- chamber and the second sub- chamber to be connected to.
3. hydraulic bushing according to claim 2, which is characterized in that the radially protruding part includes multiple circumferentially uniform
The intercommunicating pore of distribution.
4. according to claim 1 to hydraulic bushing described in any one of 3, which is characterized in that the seal assembly further includes sulphur
Change the second rubber bodies in the support ring, so that the radially protruding part passes through second rubber bodies and the housing
The sealed contact of inner surface.
5. hydraulic bushing according to claim 4, which is characterized in that second rubber bodies include and the first runner
The axial end portion of body forms the first part of sealed contact and the axial end portion of the housing forms the second of sealed contact
Part, and it is located in the radially protruding part and is formed with the inner surface of the housing Part III of sealed contact.
6. hydraulic bushing according to claim 5, which is characterized in that in the first part and second of second rubber bodies
Rigid gasket is embedded in part.
7. according to claim 1 to hydraulic bushing described in any one of 6, which is characterized in that be equipped with liquid in the support ring
Fluid perfusion channel is pressed, for injecting hydraulic fluid to the auxiliary sap cavity.
8. hydraulic bushing according to claim 7, 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.
9. according to claim 1 to hydraulic bushing described in any one of 8, which is characterized in that the main liquid cavity and the auxiliary
Sap cavity is not connected to each other.
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 of the intercommunicating pore and length root
It is determined according to axial direction dynamic rate required for hydraulic bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273607.1A CN109268438B (en) | 2018-10-30 | 2018-10-30 | Hydraulic bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273607.1A CN109268438B (en) | 2018-10-30 | 2018-10-30 | Hydraulic bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109268438A true CN109268438A (en) | 2019-01-25 |
| CN109268438B CN109268438B (en) | 2024-04-09 |
Family
ID=65194999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811273607.1A Active CN109268438B (en) | 2018-10-30 | 2018-10-30 | Hydraulic bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268438B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113906236A (en) * | 2019-04-08 | 2022-01-07 | 威巴克欧洲股份公司 | Hydraulic damping support |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5169130A (en) * | 1990-01-09 | 1992-12-08 | Hutchinson | Hydraulically damped bushings |
| FR2727179A1 (en) * | 1994-11-17 | 1996-05-24 | Hutchinson | Hydraulic anti-vibration support for attachment of vehicle front suspension system to chassis |
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|---|---|
| CN109268438B (en) | 2024-04-09 |
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