CN216078113U

CN216078113U - Automobile hydraulic suspension

Info

Publication number: CN216078113U
Application number: CN202121695572.8U
Authority: CN
Inventors: 魏刚; 李小庆; 张峰; 冒薛军; 李贺; 阮颖峰; 罗义朋; 李后乐; 赵德刚
Original assignee: Ningbo Jirun Automobile Parts Co ltd; Zhejiang Geely Holding Group Co Ltd
Current assignee: Ningbo Jirun Automobile Parts Co ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-03-18
Anticipated expiration: 2031-07-23

Abstract

The utility model provides an automobile hydraulic suspension, and belongs to the technical field of hydraulic suspensions. The hydraulic suspension system solves the problem that how to enable the hydraulic suspension to meet the use requirements of different load working conditions in the prior art. The utility model provides an automobile hydraulic suspension, includes decoupling zero membrane, runner plate and casing, the runner plate sets up and separates into upper liquid chamber and lower liquid chamber in the casing, the decoupling zero membrane sets up on the runner plate, the orifice that has intercommunication upper liquid chamber and lower liquid chamber on the runner plate, it can deform to make the orifice reciprocate to have choke head and decoupling zero membrane on the decoupling zero membrane, the choke head is worn to establish in the orifice hole, when receiving the little amplitude vibration of high frequency, be formed with flow area between choke head and the orifice lateral wall, when receiving the big amplitude vibration of low-frequency, the choke head moves up or down and all can the shutoff orifice, be formed with the annular flow channel who communicates upper liquid chamber and lower liquid chamber between runner plate and the casing. The hydraulic suspension of the automobile meets the use requirements of different load working conditions.

Description

Automobile hydraulic suspension

Technical Field

The utility model belongs to the technical field of automobile suspensions, and particularly relates to an automobile hydraulic suspension.

Background

The automobile suspension can carry out two-way isolation to the vibration of transmission between power assembly and frame, plays important effect to reducing vibration and noise in the car, and the automobile suspension can receive low-frequency big amplitude load and high-frequency little amplitude load usually, when handling these two kinds of circumstances, requires that the automobile suspension should have the characteristic of big damping, high rigidity when the low frequency effectively absorbs the vibration, has the characteristic of little damping, little rigidity when the high frequency effectively to isolate the vibration.

The Chinese patent document discloses a limit structure of an engine hydraulic suspension [ application number 201210499333.4], which comprises an active side bracket, a rubber main spring, a limit structure, a turbulence plate, a flow passage cover, a decoupling membrane, an aluminum flow passage and a passive side bracket, wherein the lower end of the active side bracket extends into the passive side bracket of the hydraulic suspension, the turbulence plate is fixedly riveted, the limit structure is arranged in the passive side bracket, the upper end of the limit structure is sleeved outside the lower end of the active side bracket and is pressed on the turbulence plate, the lower end of the limit structure is fixed with the passive side bracket of the hydraulic suspension through riveting with the flow passage cover and the aluminum flow passage, and the decoupling membrane is arranged between the flow passage cover and the aluminum flow passage.

According to the limit structure of the engine hydraulic suspension, the motion of the power assembly is transmitted to the flow disturbing disc through the driving side bracket, and the limit structure and the flow channel cover can effectively control the motion of the flow disturbing disc, so that the aim of effectively controlling the motion of the power assembly is fulfilled, and the comfort and the safety of the whole vehicle are improved.

But the shortcoming lies in, can not adjust the damping that realizes the different load condition to hydraulic suspension damping, satisfies the operation requirement of different load operating modes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automobile hydraulic suspension aiming at the problems in the prior art, and the technical problem to be solved by the utility model is how to enable the hydraulic suspension to meet the use requirements of different load working conditions.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides an automobile hydraulic suspension, includes decoupling zero membrane, runner plate and casing, the runner plate sets up and separates into upper liquid chamber and lower liquid chamber in the casing, the decoupling zero membrane sets up on the runner plate, the orifice that has intercommunication upper liquid chamber and lower liquid chamber on the runner plate, the last throttle head that has of decoupling zero membrane just the decoupling zero membrane can be out of shape and make the throttle head reciprocate, the throttle head is worn to establish in the orifice hole, when receiving the little amplitude vibration of high frequency, be formed with flow area between throttle head and the orifice lateral wall, when receiving the big amplitude vibration of low-frequency, the throttle head all can the shutoff orifice through moving up or down, be formed with the annular flow channel who communicates upper liquid chamber and lower liquid chamber between runner plate and the casing.

When the hydraulic mount is subjected to a high-frequency small-amplitude load, the decoupling film is subjected to micro deformation under the oil pressure of the upper liquid chamber, the micro deformation of the decoupling film drives the throttling head to slightly move up and down, so that a flow area is formed between the throttling head and the side wall of the throttling hole, oil in the upper liquid chamber and the lower liquid chamber can pass through the throttling head and the side wall of the throttling hole, the resistance of oil flow in the upper liquid chamber and the lower liquid chamber is small, the dynamic stiffness and the damping of the hydraulic mount are small, and the requirements of small damping and small stiffness under the high-frequency small-amplitude load are met;

when the hydraulic mount is subjected to low-frequency large-amplitude load, the decoupling film is greatly deformed by the oil pressure of the upper liquid chamber, the deformation of the decoupling film drives the throttling head to move upwards or downwards, the throttling head moves upwards or downwards to block the throttling hole, so that oil in the upper liquid chamber and the lower liquid chamber cannot be communicated through the throttling hole, the oil in the upper liquid chamber and the lower liquid chamber can only pass through the annular flow channel formed between the flow channel plate and the shell, and the annular flow channel is longer in length, so that the resistance of the oil passing through the annular flow channel is larger, the hydraulic mount generates large rigidity and large damping, the vibration energy under large amplitude can be attenuated, the influence of vibration on an automobile is reduced, the comfort of the automobile is improved, the requirements of large rigidity and large damping during low-frequency large-amplitude load are met, and therefore the hydraulic mount can meet the use requirements of different load working conditions.

In the hydraulic suspension for the automobile, an inner concave portion is arranged at the throttle hole on the throttle head, the inner concave portion comprises an upper moving section and a lower moving section connected with the upper moving section, the throttle head moves upwards to gradually reduce the flow area formed between the upper moving section and the side wall of the throttle hole, and the throttle head moves downwards to gradually reduce the flow area formed between the lower moving section and the side wall of the throttle hole. The decoupling film is greatly deformed by the oil pressure of the upper liquid chamber, the deformation of the decoupling film drives the throttle head to move downwards to ensure that the flow area between the downward moving section and the side wall of the throttle hole is gradually reduced, the flow rate of oil in the upper liquid chamber is gradually reduced from the position between the throttle head and the side wall of the throttle hole to the position in the lower liquid chamber, the flow resistance of the oil in the upper liquid chamber and the lower liquid chamber is gradually increased, the hydraulic suspension damping and the dynamic stiffness are gradually increased, the vibration energy under large amplitude is gradually attenuated, the deformation of the decoupling film drives the throttle head to move upwards to ensure that the flow area between the upward moving section and the side wall of the throttle hole is gradually reduced, the flow rate of the oil in the lower liquid chamber from the position between the throttle head and the side wall of the throttle hole to the upper liquid chamber is gradually increased, the hydraulic suspension damping and the dynamic stiffness are gradually increased, and the vibration energy under large amplitude is gradually attenuated, the decoupling membrane generates large deformation to enable the throttling head to move upwards or downwards to enable the throttling head to block the throttling hole, so that oil in the upper liquid chamber and the lower liquid chamber cannot be communicated through the throttling hole, the oil in the upper liquid chamber and the lower liquid chamber can only pass through an annular flow channel formed between the flow channel plate and the shell, and the annular flow channel is long in length and large in resistance when passing through the annular flow channel, so that large rigidity and large damping are generated in terms of hydraulic suspension, vibration energy under large amplitude can be exhausted, the influence of vibration on an automobile is reduced, the comfort of the automobile is improved, and the requirements of large rigidity and large damping during low-frequency large-amplitude load are met.

In the above hydraulic suspension for an automobile, both the side surface of the upper moving section and the side surface of the lower moving section are arc-shaped. The flow area formed by the upward moving section and the side wall of the throttling hole is gradually reduced when the throttling head moves upwards, and the flow area formed by the downward moving section and the side wall of the throttling hole is gradually reduced when the throttling head moves downwards, so that the resistance of oil liquid circulation of the lower liquid chamber and the upper liquid chamber is gradually increased, the hydraulic suspension damping and the dynamic stiffness are gradually increased, and the vibration energy under large amplitude is gradually attenuated.

In the hydraulic suspension for the automobile, the side surface of the upper moving section and the side surface of the lower moving section are both obliquely arranged, and the side surface of the upper moving section and the side surface of the lower moving section are connected to form a v shape. The flow area formed by the upward moving section and the side wall of the throttling hole is gradually reduced when the throttling head moves upwards, and the flow area formed by the downward moving section and the side wall of the throttling hole is gradually reduced when the throttling head moves downwards, so that the resistance of oil liquid circulation of the lower liquid chamber and the upper liquid chamber is gradually increased, the hydraulic suspension damping and the dynamic stiffness are gradually increased, and the vibration energy under large amplitude is gradually attenuated.

In the hydraulic suspension for the automobile, the throttle hole comprises a first through hole, a middle hole and a second through hole, the middle hole is communicated with the first through hole and the second through hole, the first through hole is communicated with the upper liquid chamber, the second through hole is communicated with the lower liquid chamber, the aperture of the first through hole and the aperture of the second through hole are larger than that of the middle hole, and the middle hole corresponds to the joint of the upper moving section and the lower moving section. The arrangement of the first through hole and the second through hole enables oil to enter and exit through the first through hole or the second through hole more quickly, the flowing speed of the oil from the throttling hole is increased, the flowing resistance of the oil is small, the dynamic rigidity and the damping of the hydraulic suspension are small, the requirement when the oil is subjected to high-frequency small-amplitude load is met, the middle hole corresponds to the joint of the upper moving section and the lower moving section, the flow area formed by the upper moving section and the side wall of the throttling hole when the throttling head moves upwards is ensured to be gradually reduced, and the flow area formed by the lower moving section and the side wall of the throttling hole when the throttling head moves downwards is gradually reduced.

In the above hydraulic suspension for automobiles, a groove is formed in the runner plate, the throttle hole is formed in the bottom wall of the groove, and a liquid inlet hole is formed in the decoupling film and located above the groove. The oil liquid in the upper liquid chamber can flow into the groove from the liquid inlet hole and flows into the lower liquid chamber from the groove through the throttling hole, and the oil liquid in the lower liquid chamber can flow into the throttling hole and then enter the groove and flows into the upper liquid chamber from the groove through the liquid inlet hole, so that the oil liquid in the hydraulic suspension can circulate in two directions.

In the above hydraulic suspension for an automobile, the liquid inlet holes are a plurality of which are circumferentially distributed, and the choke head is located between the liquid inlet holes. The liquid inlet hole ensures the inlet and outlet area of oil from the liquid inlet hole, reduces the pressure of oil pressure on the decoupling film, and ensures that the stroke of the throttle head moving up and down is small due to the deformation of the decoupling film.

In the hydraulic suspension for the automobile, the runner plate is provided with a positioning pin, and the positioning pin is connected to the decoupling film in a penetrating manner. The matching precision of the runner plate and the decoupling film is ensured.

In foretell car hydraulic pressure suspension, the circumference of runner plate has the runner chamber, the runner chamber surrounds with liquid chamber lateral wall and forms annular runner, runner plate upper end has the first opening of intercommunication upper liquid chamber and annular runner, runner plate lower extreme has the second opening of intercommunication lower liquid chamber and annular runner, the via hole that is linked together with first opening has on the decoupling zero membrane. The oil in the upper liquid chamber enters the first opening through the via hole, enters the annular flow channel from the first opening and flows into the lower liquid chamber from the second opening, and also enters the annular flow channel from the lower liquid chamber from the second opening, then flows out from the first opening and flows into the upper liquid chamber through the via hole, so that the bidirectional flow can be realized.

In foretell car hydraulic suspension, be provided with rubber main spring and rubber die block in the casing, rubber main spring and rubber die block are connected and make and form the liquid chamber between the two, the runner plate matches and sets up in the liquid chamber, form between runner cavity and the rubber main spring annular runner, form between runner plate and the rubber main spring go up the liquid chamber, form between runner plate and the rubber die block lower liquid chamber. The rubber main spring and the rubber bottom die are connected to form a liquid chamber, so that the runner plate is conveniently installed in the liquid chamber to form an upper liquid chamber and a lower liquid chamber in the liquid chamber.

Compared with the prior art, the utility model has the following advantages:

when the hydraulic suspension is subjected to high-frequency small-amplitude load, the decoupling film is subjected to micro deformation under the oil pressure of the upper liquid chamber, the micro deformation of the decoupling film drives the throttling head to slightly move up and down, a circulation area is formed between the inner concave part on the throttling head and the side wall of the throttling hole, so that oil in the upper liquid chamber and the lower liquid chamber passes through the throttling head and the side wall of the throttling hole, the resistance for circulation of the upper liquid chamber and the lower liquid chamber is smaller, the dynamic stiffness and the damping of the hydraulic suspension are smaller, the vibration isolation performance of the suspension is improved, and the requirements of small damping and small stiffness under the high-frequency small-amplitude load are met;

when the hydraulic suspension is subjected to low-frequency large-amplitude load, the decoupling film is greatly deformed by the oil pressure of the upper liquid chamber, the deformation of the decoupling film drives the throttling head to move upwards or downwards, the throttling head moves upwards or downwards to seal the throttling hole, so that oil in the upper liquid chamber and the lower liquid chamber cannot be communicated through the throttling hole, the oil in the upper liquid chamber and the lower liquid chamber can only pass through the annular flow channel formed by the side wall of the flow channel plate and the side wall of the liquid chamber, and the annular flow channel is long in length and large in resistance when the oil passes through the annular flow channel, so that large rigidity and large damping are generated on the hydraulic suspension, the vibration energy under large amplitude can be exhausted, the influence of vibration on an automobile is reduced, the comfort of the automobile is improved, the requirements of large rigidity and large damping during low-frequency large-amplitude load are met, and therefore, the hydraulic suspension can meet the use requirements of different load working conditions.

Drawings

Fig. 1 is a sectional view of an automotive hydraulic mount according to a first embodiment.

Fig. 2 is a schematic structural view of the flow field plate.

Fig. 3 is a schematic view of the structure of the flow field plate in another direction.

Fig. 4 is a schematic structural view of a decoupling film.

Fig. 5 is an enlarged view of a portion a of fig. 1.

Fig. 6 is a sectional view of the hydraulic mount for an automobile according to the second embodiment.

Fig. 7 is an enlarged view of a portion B of fig. 6.

In the figure, 1, a decoupling membrane; 1a, a via hole; 11. a throttle head; 11a, an inner concave portion; 11a1, upper shift section; 11a2, downshifting segment; 12. a liquid inlet hole; 2. a runner plate; 21. an orifice; 211. a first through hole; 212. a middle hole; 213. a second through hole; 22. an annular flow passage; 23. a groove; 24. positioning pins; 25. a runner cavity; 26. a first opening; 27. a second opening; 3. a housing; 3a, an upper liquid chamber; 3b, a lower liquid chamber; 3c, a liquid chamber; 4. a rubber main spring; 5. and (4) a rubber bottom die.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1-5, an automotive hydraulic mount comprises a decoupling film 1, a runner plate 2 and a housing 3, wherein a rubber main spring 4 and a rubber bottom mold 5 are arranged in the housing 3, the rubber main spring 4 is connected with a power assembly through a connecting shaft, the rubber main spring 4 is connected with the rubber bottom mold 5 to form a liquid chamber 3c therebetween, the runner plate 2 is arranged in the liquid chamber 3c in a matching manner, an annular flow passage 22 is formed between a flow passage cavity 25 and the rubber main spring 4, an upper liquid chamber 3a is formed between the runner plate 2 and the rubber main spring 4, a lower liquid chamber 3b is formed between the runner plate 2 and the rubber bottom mold 5, the rubber main spring 4 and the rubber bottom mold 5 are connected to form a liquid chamber 3c, so that the runner plate 2 is arranged in the liquid chamber 3c to form an upper liquid chamber 3a and a lower liquid chamber 3b therein, the runner plate 2 is provided with a throttle hole 21 communicating the upper liquid chamber 3a with the lower liquid chamber 3b, the orifice 21 includes a first through hole 211, an intermediate hole 212, and a second through hole 213, the intermediate hole 212 communicating with both the first through hole 211 and the second through hole 213, the first through hole 211 communicating with the upper liquid chamber 3b, the second through hole 213 communicating with the lower liquid chamber 3b, and the first through hole 211 and the second through hole 213 each having a larger hole diameter than the intermediate hole 212.

The flow channel plate 2 is provided with a positioning pin 24, the decoupling film 1 is arranged on the flow channel plate 2, the positioning pin 24 is connected on the decoupling film 1 in a penetrating manner, the matching precision of the flow channel plate 2 and the decoupling film 1 is ensured, the decoupling film 1 is made of natural rubber, the natural rubber has the characteristics of good rebound resilience, insulativity, water-resisting property, plasticity and the like, the decoupling film 1 can be ensured to deform under the action of oil pressure and can recover under the action of oil pressure, the decoupling film 1 is provided with a throttling head 11, the throttling head 11 is arranged in the throttling hole 21 in a penetrating manner, a concave part 11a is arranged on the throttling head 11 and positioned at the throttling hole 21, the concave part 11a comprises an upper moving section 11a1 and a lower moving section 11a2 connected with the upper moving section 11a1, the side surface of the upper moving section 11a1 and the side surface of the lower moving section 11a2 are both in an arc shape, a middle hole 212 corresponds to the connection part of the upper moving section 11a1 and the lower moving section 11a2, and the throttling head 11 moves upwards to enable the flow area formed between the upper moving section 11a1 and the side wall of the throttling hole 21 to be gradually smaller, the throttling head 11 moves downwards to enable the flow area formed between the downward moving section 11a2 and the side wall of the throttling hole 21 to be gradually reduced, the throttling head 11 can block the middle hole 212 through moving upwards or downwards, the decoupling film 1 is greatly deformed by the oil pressure of the upper liquid chamber 3a, the decoupling film 1 is deformed to drive the throttling head 11 to move downwards to enable the flow area between the downward moving section 11a2 and the side wall of the middle hole 212 to be gradually reduced, the oil liquid in the upper liquid chamber 3a is enabled to flow into the lower liquid chamber 3b from the space between the throttling head 11 and the side wall of the middle hole 212 through flowing, the resistance of oil liquid flowing in the upper liquid chamber 3a and the lower liquid chamber 3b is enabled to be gradually increased, the hydraulic suspension damping and the dynamic stiffness are enabled to be gradually increased, the vibration energy under large amplitude is enabled to be gradually attenuated, the decoupling film 1 is deformed to drive the throttling head 11 to move upwards to enable the throttling head 11 to enable the flow area between the upward moving section 11a1 and the side wall of the middle hole 212 to be gradually reduced, and the oil liquid chamber 3b is enabled to flow into the side wall of the upper liquid chamber 3a from the space between the side wall of the throttling head 11 and the middle hole 212 The oil flow is gradually reduced, so that the resistance of oil circulation of the lower liquid chamber 3b and the upper liquid chamber 3a is gradually increased, the hydraulic suspension damping and the dynamic stiffness are gradually increased, and the vibration energy under large amplitude is gradually attenuated. Be provided with recess 23 on flow path plate 2, orifice 21 sets up on recess 23 diapire, be provided with feed liquor hole 12 on decoupling zero membrane 1, feed liquor hole 12 is located the top of recess 23, feed liquor hole 12 is a plurality of, a plurality of feed liquor hole 12 is circumferential distribution, choke head 11 is located between a plurality of feed liquor hole 12, feed liquor hole 12 has guaranteed fluid from feed liquor hole 12 business turn over area, reduce the oil pressure to decoupling zero membrane 1 pressure, decoupling zero membrane 1 deformation makes the stroke that choke head 11 reciprocated little, make the fluid of last liquid chamber 3a can flow into in recess 23 from feed liquor hole 12, flow into lower liquid chamber 3b through orifice 21 from recess 23, also can make the fluid of lower liquid chamber 3b flow into orifice 21 and then get into recess 23, flow into upper liquid chamber 3a through feed liquor hole 12 from recess 23, realize the two-way circulation of fluid in the hydraulic suspension.

The flow channel plate 2 is provided with a flow channel cavity 25 in the circumferential direction, the flow channel cavity 25 and the side wall of the liquid chamber 3c are encircled to form an annular flow channel 22, the upper end of the flow channel plate 2 is provided with a first opening 26 communicated with the upper liquid chamber 3a and the annular flow channel 22, the lower end of the flow channel plate 2 is provided with a second opening 27 communicated with the lower liquid chamber 3b and the annular flow channel 22, the decoupling membrane 1 is provided with a through hole 1a communicated with the first opening 26, oil in the upper liquid chamber 3a enters the first opening 26 through the through hole 1a, enters the annular flow channel 22 from the first opening 26 and flows out from the second opening 27 to the lower liquid chamber 3b, or enters the second opening 27 from the lower liquid chamber 3b to the annular flow channel 22 and then flows out from the first opening 26 to flow into the upper liquid chamber 3a through the through hole 1a, and bidirectional flow can be realized.

When the hydraulic suspension is subjected to high-frequency small-amplitude load, the decoupling film 1 is subjected to micro deformation under the oil pressure of the upper liquid chamber 3a, the micro deformation of the decoupling film 1 drives the throttling head 11 to slightly move up and down, a flow area is formed between the inner concave part 11a on the throttling head 11 and the side wall of the middle hole 212, so that oil in the upper liquid chamber 3a and the lower liquid chamber 3b passes through the space between the throttling head 11 and the side wall of the middle hole 212, the flow resistance of the upper liquid chamber 3a and the lower liquid chamber 3b is smaller, the dynamic stiffness and the damping of the hydraulic suspension are smaller, the vibration isolation performance of the suspension is improved, and the requirements of small damping and small stiffness under the high-frequency small-amplitude load are met.

When the hydraulic suspension is subjected to low-frequency large-amplitude load, the decoupling film 1 is greatly deformed by the oil pressure of the upper liquid chamber 3a, the decoupling film 1 is deformed to drive the throttling head 11 to move upwards or downwards, the throttling head 11 blocks the throttling hole 21, so that oil in the upper liquid chamber 3a and the lower liquid chamber 3b cannot pass through the throttling hole 21, the oil in the upper liquid chamber 3a and the lower liquid chamber 3b can only pass through the annular flow passage 22 formed by the flow passage plate 2 and the side wall of the liquid chamber 3c, and the annular flow passage 22 is long in length, so that the resistance of the oil passing through the annular flow passage 22 is large, and the hydraulic suspension generates large rigidity and large damping, thereby being capable of dissipating vibration energy under large amplitude, improving the comfort of a vehicle, and meeting the requirements of large rigidity and large damping during low-frequency large-amplitude load, and therefore, the hydraulic suspension can meet the use requirements of different load working conditions.

Example two

As shown in fig. 6 and 7, the present embodiment has substantially the same structure as the first embodiment, except that the side surface of the upward moving section 11a1 and the side surface of the downward moving section 11a2 are both inclined, and the side surface of the upward moving section 11a1 and the side surface of the downward moving section 11a2 are connected in a v shape, so as to ensure that the flow area formed by the upward moving section 11a1 and the side wall of the middle hole 212 is gradually reduced when the throttle head 11 moves upward, and the flow area formed by the downward moving section 11a2 and the side wall of the middle hole 212 is gradually reduced when the throttle head 11 moves downward, so that the resistance to oil flow between the lower fluid chamber 3b and the upper fluid chamber 3a is gradually increased, the hydraulic suspension damping and the dynamic stiffness are gradually increased, and the vibration energy under large amplitude is gradually attenuated.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. A hydraulic suspension for an automobile, comprising a decoupling film (1), a runner plate (2) and a shell (3), wherein the runner plate (2) is arranged in the shell (3) to divide the interior of the shell (3) into an upper liquid chamber (3a) and a lower liquid chamber (3b), the decoupling film (1) is arranged on the runner plate (2), the hydraulic suspension is characterized in that the runner plate (2) is provided with a throttling hole (21) which is communicated with the upper liquid chamber (3a) and the lower liquid chamber (3b), the decoupling film (1) is provided with a throttling head (11), the decoupling film (1) can deform to enable the throttling head (11) to move up and down, the throttling head (11) is arranged in the throttling hole (21) in a penetrating manner, when the hydraulic suspension is subjected to high-frequency small-amplitude vibration, a flow area is formed between the throttling head (11) and the side wall of the throttling hole (21), and when the hydraulic suspension is subjected to low-frequency large-amplitude vibration, the throttling head (11) can block the throttling hole (21) by moving up and down, an annular flow channel (22) which is communicated with the upper liquid chamber (3a) and the lower liquid chamber (3b) is formed between the flow channel plate (2) and the shell (3).

2. The hydraulic mount for the automobile as recited in claim 1, wherein the throttle head (11) has an inner recess (11a) at the throttle hole (21), the inner recess (11a) includes an upper shift section (11a1) and a lower shift section (11a2) connected to the upper shift section (11a1), the upward shift of the throttle head (11) gradually decreases a flow area formed between the upper shift section (11a1) and a side wall of the throttle hole (21), and the downward shift of the throttle head (11) gradually decreases a flow area formed between the lower shift section (11a2) and the side wall of the throttle hole (21).

3. The hydraulic mount for automobile of claim 2, characterized in that the side of the upper shift section (11a1) and the side of the lower shift section (11a2) are both arc-shaped.

4. The hydraulic mount for automobile as claimed in claim 2, wherein the side of the upper shift section (11a1) and the side of the lower shift section (11a2) are both inclined, and the side of the upper shift section (11a1) and the side of the lower shift section (11a2) are connected to form a v-shape.

5. The hydraulic mount for automobiles of claim 2, 3 or 4, wherein the orifice (21) comprises a first through hole (211), a middle hole (212) and a second through hole (213), the middle hole (212) communicates with both the first through hole (211) and the second through hole (213), the first through hole (211) communicates with the upper liquid chamber (3b), the second through hole (213) communicates with the lower liquid chamber (3b), the first through hole (211) and the second through hole (213) each have a larger aperture than the middle hole (212), and the middle hole (212) corresponds to the junction of the upper shift section (11a1) and the lower shift section (11a 2).

6. The hydraulic mount of claim 1, 2, 3 or 4, wherein the runner plate (2) is provided with a groove (23), the bottom wall of the groove (23) is provided with the throttle hole (21), the decoupling film (1) is provided with a liquid inlet hole (12), and the liquid inlet hole (12) is positioned above the groove (23).

7. The hydraulic mount of claim 6, wherein the plurality of liquid inlet holes (12) are circumferentially distributed, and the throttle head (11) is located between the plurality of liquid inlet holes (12).

8. The hydraulic mount for a motor vehicle according to claim 1, 2, 3 or 4, characterized in that the runner plate (2) is provided with positioning pins (24), and the positioning pins (24) are threaded on the decoupling membrane (1).

9. The hydraulic mount of claim 1, 2, 3 or 4, wherein the runner plate (2) has a runner cavity (25) in the circumferential direction, the runner cavity (25) and the side wall of the liquid chamber (3c) surround to form the annular runner (22), the runner plate (2) has a first opening (26) at the upper end for communicating the upper liquid chamber (3a) and the annular runner (22), the runner plate (2) has a second opening (27) at the lower end for communicating the lower liquid chamber (3b) and the annular runner (22), and the decoupling film (1) has a through hole (1a) communicated with the first opening (26).

10. The hydraulic mount of claim 9, wherein a rubber main spring (4) and a rubber bottom die (5) are disposed in the housing (3), the rubber main spring (4) and the rubber bottom die (5) are connected to form the liquid chamber (3c) therebetween, the runner plate (2) is disposed in the liquid chamber (3c) in a matching manner, the annular runner (22) is formed between the runner cavity (25) and the rubber main spring (4), the upper liquid chamber (3a) is formed between the runner plate (2) and the rubber main spring (4), and the lower liquid chamber (3b) is formed between the runner plate (2) and the rubber bottom die (5).