CN102588501A - Hydraulic suspension of engine - Google Patents

Hydraulic suspension of engine Download PDF

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Publication number
CN102588501A
CN102588501A CN2011104491564A CN201110449156A CN102588501A CN 102588501 A CN102588501 A CN 102588501A CN 2011104491564 A CN2011104491564 A CN 2011104491564A CN 201110449156 A CN201110449156 A CN 201110449156A CN 102588501 A CN102588501 A CN 102588501A
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China
Prior art keywords
liquid chamber
base
hole
engine
attachment hole
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CN2011104491564A
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CN102588501B (en
Inventor
史美杰
张军
范倩倩
潘美蕾
章阳贺
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Pan American auto parts (Ningbo) Co., Ltd
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NINGBO FANYA AUTO PARTS CO Ltd
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Priority to CN201110449156.4A priority Critical patent/CN102588501B/en
Publication of CN102588501A publication Critical patent/CN102588501A/en
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Publication of CN102588501B publication Critical patent/CN102588501B/en
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  • Combined Devices Of Dampers And Springs (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

The invention relates to a suspension of an engine, in particular to a hydraulic suspension of an engine, which comprises a base, a rubber main spring, an upper frame and an engine fixing support, wherein a main liquid chamber, a secondary liquid chamber and a liquid flow passage are arranged between the rubber main spring and the base; the liquid flow passage communicates the main liquid chamber with the secondary liquid chamber, the upper frame and the base form an annular structure clamped on the rubber main body, one end of the engine fixing support is fixedly connected on the end surface of the rubber main body, parallel to a plane on which the annular structure is located, the other end of the engine fixing support is provided with an installation hole or a bolt for installing the engine, and the engine fixing support, the main liquid chamber and the secondary liquid chamber are arranged from top to bottom in sequence. The invention provides the hydraulic suspension of the engine, which can be adapted to the installation of the engine in a vehicle with a small height space and is good in shear resisting capability, thereby solving the problem that the existing hydraulic suspension of the engine is poor in shear resisting capability and poor in vibration reduction effect.

Description

Engine hydraulic mount
Technical field
The present invention relates to have the engine mounting of shock-absorbing function, relate in particular to a kind of engine hydraulic mount, belong to the auto parts and components field.
Background technique
Cause the problem of the riding comfort decline of vehicle for the caused body oscillating of the vibration that overcomes motor, when automobile is made, motor is installed on the car body through engine mounting with shock-absorbing function.
The initial engine mounting with shock-absorbing function is the vibration that absorbs vehicle through the internal friction characteristic that utilizes rubber, plays the effect of damping.
Chinese patent notice of authorization number for 201517580U, notice of authorization day be June 30 in 2010 day, be called in the patent documentation of " motor rubber mounting " and disclose a kind of engine mounting that carries out damping through rubber; This suspends and comprises the rubber layer between the overcoat that sulfides, interior cover and cover and the overcoat; During use this being suspended is enclosed within fixed on the bolt on the car body and make motor support on this suspends, and the resiliently deformable through rubber reaches damping effect.
The Chinese patent notification number be 2069808U, the day for announcing are January 23 in 1991 day, be called and disclose the another kind of engine mounting that carries out damping through rubber in the patent documentation of " engine mounting ", this suspends and comprises tube-like base, is contained in the rubber mount in the base and is supported on the nut on the rubber mount.Base is fixed on the car body when practical, cooperates said nut that enlarger is fixed on this suspends through screw.Resiliently deformable through rubber mount realizes damping effect.
Chinese patent number for 200710092457x, open day be December 26 in 2007 day, be called that public affairs also disclose a kind of engine mounting that carries out damping through beam (being mostly rubber pad) in the patent documentation of " right suspension installation of saloon car engine ".The spacing screw rod that this suspends and mainly comprises riser (base), is fixed on the buffer stopper on the riser and is arranged on the buffer stopper upper end.Riser is fixed on the right vertical beam during use, bearing wall is fixed on the spacing screw rod, and fixed is on bearing partition.Resiliently deformable through buffer stopper realizes damping effect.
Because only the interior frictional property through rubber comes damping, effect is not good enough, has designed hydraulic mount in order further to improve the damping effect that suspends.Hydraulic mount mainly comprises rubber spring, base and is positioned at base and the two two chamber bodies of rubber spring that two chamber bodies are communicated with through liquid chunnel.In two chamber bodies, inject damping fluid during use.When the energy-absorbing cushioning effect is played in the rubber spring distortion during body oscillating; The chamber body that is positioned at rubber spring is squeezed and produces stereomutation; Force damping fluid through liquid chunnel motion repeatedly in two cavitys, when damping fluid is flowed through liquid chunnel between self and damping fluid will vibrate with producing friction between the liquid chunnel that the mechanical energy that is produced changes heat energy into and the effect of playing the damping energy-absorbing.
Chinese patent notice of authorization number for 201970840U, the day for announcing be September 14 in 2011 day, be called the engine mounting that discloses a kind of hydraulic type in the patent documentation of " engine mounting ".This bonnet (base) of comprising rubber spring, being positioned at the rubber spring lower end of suspending, be arranged on the hydraulic shock-absorption unit between rubber spring and the bonnet; Said bonnet is provided with the car body retaining screw, and the end away from bonnet of said body of rubber is provided with the fixed screw.Bonnet is connected on the car body through the car body retaining screw during use, and motor connects screw through motor and is connected on the body of rubber.The present invention and motor are fixed on the car body with range upon range of mode.
Chinese patent number for 200810061566x, open day be October 15 in 2008 day, be called in the patent documentation of " damping adjustable type engines suspending damping device " and disclose a kind of hydraulic mount; This suspends and mainly comprises main spring and the base that is arranged on main spring lower end; And the hydraulic shock-absorption unit between main spring and base; On the lower surface of base, be provided with to the following attachment screw that extends below, the upper-end surface of main spring is provided with the upwardly extending attachment screw of going up.Be provided with at present that attachment screw is connected with car body, last attachment screw is connected with motor.
But existing engine mounting with shock-absorbing function all has following dead zone of design and deficiency: all be the link that is connected with car body to be set in the bottom that suspends, the link that connects with motor is set on the top that suspends; When being connected motor on the car body through suspending, motor be positioned at suspend directly over, make that the two height that takies of motor and suspension is bigger; On compact car in order to realize the installation of motor; Have only the height that suspends through reduction to realize, and suspend dwindle after, rubber spring also will dwindle with inner hydraulic chamber thereupon; The feasible shock-absorbing function variation that suspends, the riding comfort variation of vehicle; Anti-shear ability is poor.
Summary of the invention
The invention provides a kind of installation and good engine hydraulic mount of anti-shear ability that can adapt to the motor in the less vehicle of height space, solved existing the suspending of shock-absorbing function of having through reducing problem and the problem of existing engine mounting anti-shear ability difference that damping performance adapts to the riding comfort difference that installation caused of the motor in the less vehicle of height space.
Above technical problem solves through following technical proposal: a kind of engine hydraulic mount; Comprise base and be arranged on the rubber spring on the base; Be provided with main liquid chamber and secondary liquid chamber between said rubber spring and the said base, be provided with liquid chunnel between main liquid chamber and the secondary liquid chamber, it is characterized in that; Also comprise and putting on the shelf and the fixed support; Said putting on the shelf and base looping structure, said loop configuration is embraced and is clipped on the said body of rubber, and the same said loop configuration that an end of said fixed support is fixed in said body of rubber belongs on the end face of plane parallel; The other end of said fixed support is provided with installs mounting hole or the bolt that motor is used, and said fixed support, main liquid chamber and secondary liquid chamber three are arranged in order from top to down.Base and/or put on the shelf links together with car body during use; Motor is connected with engine support through mounting hole on the engine support or bolt; Thereby make motor be positioned at two vertical planes with suspending; And the lower end of motor is lower than the upper end that suspends, and reduces motor and the total height that suspends when linking together.Put on the shelf and make to put on the shelf to constitute a ring structure and embrace through design and be clipped on the rubber spring with base; Overcome of the shear fracture effect of the distortion power that horizontal vibration produced of motor to rubber spring; And existing structure receives when shearing, and the bolt that be used for fixing motor or the nut of sulfuration in rubber spring is easily with throwing off between the body of rubber.Base with put that can be designed as removably connects on the shelf and improve the present invention's assembling and convenience when safeguarding.
As preferably, said rubber spring is provided with attachment hole, but the plug of said fixed support be connected in the said attachment hole.The fixed support is not sulfided with rubber spring; And be designed to pluggable mode; The fixed support can be changed separately; Being common version and fixed support with other Component Design except that the fixed support of the present invention is designed to different forms according to the difference of vehicle, improves versatility of the present invention and reduces the mould development cost.
As preferably, sulfuration has connecting sleeve in the said attachment hole, and said engine support links together with said attachment hole through said connecting sleeve.Connecting sleeve is set, makes that engine support is difficult in rubber spring, coming off, if directly be inserted on the rubber, because the elasticity of rubber, the fixed support is prone to produce obscission.
As preferably, be provided with buckle between said engine support and the said connecting sleeve, said fixed support is connected in the said connecting sleeve through said buckle.Had after the buckle, can be designed as Spielpassung between connecting sleeve and the fixed support.Convenience when further raising fixed support is assembled on the body of rubber.
As preferably, said loop configuration is provided with at least two and connects said bases and the first car body attachment holes of putting on the shelf, and the said first car body attachment hole is positioned at the both sides of said rubber spring, and said base links together through the said first car body attachment hole with putting on the shelf.After passing the first car body attachment hole through bolt during use the present invention is fixed on the car body, this bolt is also held loop configuration tightly on rubber spring in the lump simultaneously.During non-working condition, each parts of the present invention can be taken apart and deposit, and are convenient when depositing; Through identical attachment hole come to realize simultaneously the present invention with the connection between the car body and base with the connection between putting on the shelf, convenient during simple in structure, assembling.
As preferably, said upper end of putting on the shelf is provided with the second car body attachment hole, said first car body attachment hole and the distribution triangular in shape of the second car body attachment hole.During use, the present invention is linked together with car body after also passing the second car body attachment hole through bolt.According to 3 principles of confirming a plane, the present invention is more steady with the connection between the car body.
The present invention also comprises leather cup; The lower end surface of said rubber spring is provided with cavity; Said base plate is provided with the through hole that connects the upper and lower end face, is provided with step and flaps in the said through hole, and the lower end of said through hole is through said cup packing; The lower end surface sealing paste of said rubber spring is combined on the said step; Said flaps and said cavity surround said main liquid chamber, and said flaps, said through hole and said leather cup three surround said secondary liquid chamber, and said flaps is provided with the resistive plate portion slit that constitutes said liquid chunnel.In the cavity that is surrounded by leather cup, cavity and through hole three, fill with damping fluid (existing damping fluid commonly used is ethylene glycol) when using; When the vibration of motor causes that the volume size of main liquid chamber changes; Damping fluid flows between main liquid chamber and secondary liquid chamber through liquid chunnel back and forth; Produce friction in the flow process and will vibrate the mechanical energy that is produced and convert heat energy into, play the effect of damping.Forcing rubber spring to be sealedly connected on the step through base on the rubber spring with putting on the shelf to hold tightly.Realize that with simple structure rubber spring is with being tightly connected between the base.
As preferably, state between main liquid chamber and the said secondary liquid chamber and be provided with dividing plate, be provided with the decoupling zero sheet between said dividing plate and the said flaps, said dividing plate is provided with the partition board portion slit that constitutes said liquid chunnel." decoupling zero sheet " is meant through from rocking and the sheet component of absorbed oscillation energy in damping fluid.During the low frequency large-amplitude vibration; Main liquid chamber can produce volume-variation and force damping fluid between two chambers, to flow back and forth; Yet during engine producing high frequency low amplitude vibrations; Rubber spring is difficult for producing distortion, thus poor to the damping effect of high frequency low-amplitude, also be that aforesaid way only has good cushioning effect to the low frequency large amplitude.Through design damping chamber and decoupling zero sheet, when high frequency slightly vibrates, in chamber, damping chamber, rock the absorbed oscillation energy in the present technique scheme, make the present invention good damping effect also arranged the high frequency low amplitude vibrations through separating the lotus root sheet.
As preferably, said decoupling zero sheet comprises flake main body and the some friction levers that run through flake main body, and said friction lever is provided with along the axially extended damping hole of friction lever.During the vibration of low frequency high amplitude, damping hole constitutes the part of liquid chunnel, and the frictional force when the increase damping fluid flows improves low frequency damping effect of the present invention.Decoupling rod can increase the area of contact of decoupling zero sheet with damping fluid, and when causing damping fluid to rock when the high frequency low amplitude vibrations, friction effect is good, thereby increases high frequency damping effect of the present invention.Damping hole is designed to be positioned on the friction lever and along the axially extended hole of friction lever, can plays the effect of the length that prolongs liquid chunnel.
The present invention also comprises the leather cup supporting cover, and said leather cup supporting cover is threaded on the said base, and said leather cup is connected on the said base through said leather cup supporting cover.Make leather cup can be installed to base easily and get on and pull down from base, convenient when injecting damping fluid.
As preferably, said joint of putting on the shelf with said base is provided with the adjusting play.To produce rubber spring fixing when insecure with the poor sealing between the base and between with ring structure when the wearing and tearing owing to rubber spring, can be through closing to such an extent that more hold together overcome with putting on the shelf base.
The present invention has following advantage, and the installation and the anti-shear ability that can adapt to the motor in the less vehicle of height space are good; But all be that removably is produced on together between the parts in the preferred version, be convenient to follow-up maintenance, can change separately parts, maintenance cost is low; Preferably put in the case, increase the decoupling zero sheet, make that vibration all has good damping effect to high and low frequency in the present invention.
Description of drawings
Fig. 1 is a split view of the present invention.
Fig. 2 is the enlarged diagram of overlooking of separating the lotus root sheet.
Fig. 3 is the B-B schematic cross-section at the A place of Fig. 2
Fig. 4 is a schematic top plan view of the present invention.
Fig. 5 is C-C schematic cross-section of Fig. 4.
Fig. 6 is a user mode schematic representation of the present invention.
Among the figure: leather cup supporting cover 1, installation gap 11, leather cup fixing bolt 12, leather cup 2, base 3, groove 31, the locating stud 32 of putting on the shelf, pedestal part mounting hole 33; Through hole 34, step 35, flaps 36, resistive plate portion slit 361, main spring positioning hole 37, dividing plate locating stud 38 is separated lotus root sheet 4; Flake main body 41, friction lever 42, damping hole 43, dividing plate 5, partition board portion slit 51, dividing plate positioning hole 52, rubber spring 6; Attachment hole 61, main spring locating stud 62, connecting sleeve 63, cavity 64 puts 7 on the shelf, the positioning hole 71 of putting on the shelf, the portion's mounting hole 72 of putting on the shelf; The second car body attachment hole 73, adjusting play 74, fixed support 8, connecting rod 81, strut 82, buckle 83, motor mounting hole 84; The first car body attachment hole 9, secondary liquid chamber 91, main liquid chamber 92, liquid chunnel 93, car body 100, motor 101, fixed hole 102.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Referring to Fig. 1, a kind of engine hydraulic mount comprises leather cup supporting cover 1, leather cup 2, base 3, separates lotus root sheet 4, dividing plate 5, rubber spring 6, puts 7 and fixed support 8 on the shelf.
Leather cup supporting cover 1 is an annular.Leather cup supporting cover 1 forms for aluminum.The outer periphery of leather cup supporting cover 1 are provided with nine installation gaps 11.
Leather cup 2 is made for rubber.
Base 3 forms for aluminum.The underpart of base 3 is provided with the groove 31 that connects front/rear end.Respectively be provided with two put on the shelf locating stud 32 and pedestal part mounting holes 33 on the end about the upper-end surface of base 3.Pedestal part mounting hole 33 is put on the shelf between the locating stud 32 at two.Base 3 is provided with the through hole 34 that connects upper and lower surfaces.Be provided with step 35 and flaps 36 in the through hole 34.Flaps 36 is structure as a whole with step 35.Flaps 36 is provided with three resistive plate portion slits 361.The diagonal angle is provided with two dividing plate locating studs 38 on the step 36.The front surface of base 3 is provided with main spring positioning hole 37.Main spring positioning hole 37 connects to through hole 34 and is positioned at the top of step 35.
Dividing plate 5 is an iron plate.Dividing plate 5 is provided with five partition board portion slits 51 and two dividing plate positioning holes 52 that match with dividing plate locating stud 38.
The upper end of rubber spring 6 is provided with the attachment hole 61 that connects front and rear surfaces.Rubber spring 6 is trapezoidal.Be set to trapezoidal not only steady but also effective to the bradyseism of up-down vibration.The front surface of rubber spring 6 is provided with the main spring locating stud 62 that matches with main spring positioning hole 37.
Put on the shelf and 7 form for aluminum.Put on the shelf and 7 be arched arc plate upwards.7 the right ends of putting on the shelf respectively is provided with two put on the shelf positioning hole 71 and the portion's mounting holes 72 of putting on the shelf of matching with the locating studs 32 of putting on the shelf.7 the upper end rear side of putting on the shelf is provided with one second car body attachment hole 73.Pedestal part mounting hole 33 constitutes the first car body attachment hole 9 with the portion's mounting hole 72 of putting on the shelf.
Fixed support 8 from after be provided with connecting rod 81 and strut 82 forward successively.Connecting rod 81 is " T " shape with strut 82 and is connected.Connecting rod 81 is provided with buckle 83.Strut 82 is provided with the motor mounting hole 84 that connects upper and lower surfaces.Motor mounting hole 84 has three.Certainly it is the same motor mounting hole 84 being changed to the effect that the motor construction bolt connects motor, just be designed to attachment hole store in a warehouse more convenient than the mode that is designed to bolt when of the present invention.
Referring to Fig. 2, separate lotus root sheet 4 and comprise flake main body 41, on flake main body, be provided with 11 row, four row and amount to 44 friction levers 42.Friction lever 42 is provided with damping hole 43.
Referring to Fig. 3, friction lever 42 connects the upper and lower surfaces of flake main body 41.Damping hole 43 is along the axial perforation friction lever 42 of friction lever.
Referring to Fig. 4, two first car body attachment holes 9 and 73 distributions triangular in shape of the second car body attachment hole.Four locating stud 32 correspondences of putting on the shelf are located in four positioning holes 71 of putting on the shelf.
Referring to Fig. 5, putting on the shelf 7 constitutes to embrace with base 3 and is clipped in the loop configuration on the rubber spring 6.
In attachment hole 61, be provided with connecting sleeve 63.Connecting sleeve 63 sulfurations are in attachment hole 61.Connecting rod 81 is inserted in the attachment hole 61.Connecting rod 81 is to be connected together with connecting sleeve 63 through the buckle on it 83 (referring to Fig. 1) to fix.
Main spring locating stud 62 be located in realize in the main spring positioning hole 37 rubber spring 6 about the location.
The lower end surface of rubber spring 6 is provided with cavity 64.The lower end surface of rubber spring 6 is combined on the step 35 through dividing plate 5 sealing pastes.Dividing plate 5 cooperates dividing plate positioning hole 52 (referring to Fig. 1) to be positioned on the step 35 through dividing plate locating stud 38.Separate lotus root sheet 4 between flaps 36 and dividing plate 5.
Leather cup 2 through leather cup supporting cover 1 by the lower end surface that is pressed in base 3.Leather cup 2 with between the base 3 for being tightly connected.Leather cup supporting cover 1 passes installation gap 11 (referring to Fig. 1) through leather cup fixing bolt 12 and is threaded together with base 3.
Leather cup 2, flaps 36 and through hole 34 surround secondary liquid chamber 91.Cavity 64 surrounds main liquid chamber 92 with dividing plate 5.
Resistive plate portion slit 361 constitutes the liquid chunnel 93 that is communicated with secondary liquid chamber 91 and main liquid chamber 92 with partition board portion slit 5.
The cavity that is positioned at body of rubber 5 and base 3 that need in secondary liquid chamber 91, main liquid chamber 92 and liquid chunnel 93 etc., promptly be sealed out by leather cup 2 before using is filled with damping fluid, does not leave air otherwise can influence damping effect.
Referring to Fig. 6, putting on the shelf 7 is provided with adjusting play 74 with the joint of base 3.
After passing two the first car body attachment holes 9 and the second car body attachment hole 73 through the screw correspondence during use the present invention is fixed on the car body 100.Through behind fixed hole on the screw bolt passes motor 101 102 and the motor mounting hole 84 (referring to Fig. 1) motor 101 being fixed in the present invention.This design makes the motor top high-endly add height sum of the present invention with what the distance between the top of the present invention was less than motor, plays the effect of dwindling spatial altitude.When motor 101 produced horizontal vibration simultaneously, the shearing force of substantially horizontal was not easy engine mounting bracket is opened with the rubber shearing.

Claims (10)

1. engine hydraulic mount; Comprise base and be arranged on the rubber spring on the base; Be provided with main liquid chamber and secondary liquid chamber between said rubber spring and the said base, be provided with liquid chunnel between main liquid chamber and the secondary liquid chamber, it is characterized in that; Also comprise and putting on the shelf and the fixed support; Said putting on the shelf and base looping structure, said loop configuration is embraced and is clipped on the said body of rubber, and the same said loop configuration that an end of said fixed support is fixed in said body of rubber belongs on the end face of plane parallel; The other end of said fixed support is provided with installs mounting hole or the bolt that motor is used, and said fixed support, main liquid chamber and secondary liquid chamber three are arranged in order from top to down.
2. engine hydraulic mount according to claim 1 is characterized in that said rubber spring is provided with attachment hole, but the plug of said fixed support be connected in the said attachment hole.
3. engine hydraulic mount according to claim 2 is characterized in that, sulfuration has connecting sleeve in the said attachment hole, and said fixed support links together with said attachment hole through said connecting sleeve.
4. engine hydraulic mount according to claim 3 is characterized in that, is provided with buckle between said engine support and the said connecting sleeve, and said fixed support is connected in the said connecting sleeve through said buckle.
5. according to claim 1 or 2 or 3 or 4 described engine hydraulic mounts; It is characterized in that; Said loop configuration is provided with at least two and connects said base and the first car body attachment hole of putting on the shelf; The said first car body attachment hole is positioned at the both sides of said rubber spring, and said base links together through the said first car body attachment hole with putting on the shelf.
6. engine hydraulic mount according to claim 5 is characterized in that, said upper end of putting on the shelf is provided with the second car body attachment hole, said first car body attachment hole and the distribution triangular in shape of the second car body attachment hole.
7. according to claim 1 or 2 or 3 or 4 described engine hydraulic mounts, it is characterized in that, also comprise leather cup; The lower end surface of said rubber spring is provided with cavity; Said base plate is provided with the through hole that connects the upper and lower end face, is provided with step and flaps in the said through hole, and the lower end of said through hole is through said cup packing; The lower end surface sealing paste of said rubber spring is combined on the said step; Said flaps and said cavity surround said main liquid chamber, and said flaps, said through hole and said leather cup three surround said secondary liquid chamber, and said flaps is provided with the resistive plate portion slit that constitutes said liquid chunnel.
8. engine hydraulic mount according to claim 7; It is characterized in that; Be provided with dividing plate between said main liquid chamber and the said secondary liquid chamber, be provided with the decoupling zero sheet between said dividing plate and the said flaps, said dividing plate is provided with the partition board portion slit that constitutes said liquid chunnel.
9. engine hydraulic mount according to claim 8 is characterized in that, said decoupling zero sheet comprises flake main body and the some friction levers that run through flake main body, and said friction lever is provided with along the axially extended damping hole of friction lever.
10. according to claim 1 or 2 or 3 described engine hydraulic mounts, it is characterized in that said joint of putting on the shelf with said base is provided with the adjusting play.
CN201110449156.4A 2011-12-29 2011-12-29 Hydraulic suspension of engine Active CN102588501B (en)

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CN105041958A (en) * 2015-07-17 2015-11-11 瑞安市恒盛汽车零部件有限公司 Hydraulic shock absorption support for engine
CN106114182A (en) * 2016-06-29 2016-11-16 奇瑞汽车股份有限公司 A kind of hydraulic suspension structure of engine
CN106457994A (en) * 2014-05-16 2017-02-22 伯杰橡胶金属有限责任公司 Assembly mounting
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CN110103693A (en) * 2019-03-19 2019-08-09 宁波拓普集团股份有限公司 A kind of hydraulic mount
CN112060900A (en) * 2020-10-10 2020-12-11 上海汽车集团股份有限公司 Automobile, power assembly suspension system and torsion-resistant pull rod thereof
JPWO2020250744A1 (en) * 2019-06-11 2021-12-09 山下ゴム株式会社 Anti-vibration device
WO2022116975A1 (en) * 2020-12-01 2022-06-09 长城汽车股份有限公司 Hydraulic suspension apparatus having integral suspension framework laterally pressed, and vehicle

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