CN104819244B - Damp mounting frame for gear case based on hydraulic suspension - Google Patents

Abstract

The invention discloses a vibration-damping installation frame for gearboxes based on hydraulic suspension, aiming to provide a vibration-damping mounting frame for gearboxes in the low-frequency region, and effectively improve the vibration of the gearbox in the middle and high-frequency regions. A vibration-damping mounting bracket for gear boxes that performs vibration-damping and isolation effects. It includes a bottom frame, a top frame for installing a gearbox, and several hydraulic mounts arranged on the bottom frame for supporting the top frame. The hydraulic mount includes an upper chamber and a lower chamber. An intercommunicating vibration tuning device is provided between at least one pair of hydraulic mounts, and the intercommunicating vibration tuning device includes a first tuning pipeline, a floating first adaptive partition device arranged on the first tuning pipeline, a second tuning pipeline and The floating second-type self-adaptive isolation device set on the second tuning pipeline.

Description

Vibration-absorbing mount for gearbox based on hydraulic mount

technical field

The invention relates to a vibration-damping installation frame for a gear box, in particular to a vibration-damping mounting frame for a gear box based on hydraulic suspension.

Background technique

The vibration and noise of the gearbox are mainly caused by the friction, vibration and collision of the transmission gear. How to effectively reduce the vibration and noise of the gearbox and make it more in line with environmental protection requirements is a key research topic at home and abroad. The vibration damping element used to support the gearbox in the traditional technology is generally a rubber-based damping element, which attenuates vibration energy through the elasticity of the rubber body and its own hysteresis loss. At present, with the advancement of technology, various damping components are used to support the gearbox to achieve better vibration damping and vibration isolation effects; among them, hydraulic mounts are currently a relatively common vibration damping component. The common structure of the hydraulic mount is divided into multiple chambers inside the engine mount by the upper runner plate, the decoupling plate and the lower runner plate, and each chamber communicates with each other through the channels on the runner plate. The hydraulic mount produces a large energy loss along the way when the liquid flows between different chambers, so that the vibration energy can be dissipated as soon as possible to achieve the purpose of damping vibration; but the current structure of the hydraulic mount is not suitable for the low frequency region Vibration can effectively reduce vibration and shock isolation, but for the vibration in the medium and high frequency region, due to the large inertia of the liquid in the flow channel between the chambers, the liquid hardly has time to flow, and it cannot be effectively used by the liquid flow. Vibration energy consumption, so it is not good for vibration isolation in the middle and high frequency areas.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a vibration-damping installation frame for gearboxes based on hydraulic suspension, which can not only reduce the vibration of the gearbox in the low-frequency region, but also effectively improve the Damping and isolating the vibration of the gearbox in the medium and high frequency area.

Technical scheme of the present invention is:

A shock-absorbing mounting frame for a gear box based on a hydraulic mount, comprising a bottom frame, a top frame for installing a gearbox, and several hydraulic mounts arranged on the bottom frame for supporting the top frame, and the hydraulic mount includes In the upper chamber and the lower chamber, at least one pair of hydraulic mounts in the hydraulic mounts is provided with an intercommunicating vibration tuning device, the intercommunicating vibration tuning device includes a first tuning pipeline, and the A floating first adaptive isolation device, a second tuning pipeline and a floating second adaptive isolation device arranged on the second tuning pipeline; the floating first adaptive isolation device includes a Two ring-shaped bumps on the top, a guide rod set in the first tuning pipe, two guide sleeves set on the guide rod, two pre-tightened compression springs set on the guide rod and two pieces set on the guide rod The partition end plate on the rod, the guide rod of the floating first adaptive partition device extends along the first tuning pipe, and the two guide sleeves of the floating first adaptive partition device are respectively connected to the inner wall of the first tuning pipe through the connecting rod. A ring-shaped bump is located between the two guide sleeves; the two partition end plates are parallel to each other, and the partition end plate is perpendicular to the guide rod, and the two partitions are located between the two ring-shaped bumps. There are annular sealing rings on the sides; the two partition end plates are located between the two pre-tightened compression springs, and the pre-tightened compression springs are located between the guide sleeve and the partition end plate; the floating second self-adaptive partition device includes a Two ring-shaped protrusions on the inner side of the second tuning pipe, a guide rod arranged in the second tuning pipe, two guide sleeves sleeved on the guide rod, and two pre-tightened compression springs sleeved on the guide rod and two partition end plates arranged on the guide rod, the guide rod of the floating second self-adaptive partition device extends along the second tuning pipe, and the two guide sleeves of the floating second self-adaptive partition device are respectively connected to the second The inner wall of the tuning pipe is connected, and the two ring-shaped projections are located between the two guide sleeves; the two partition end plates are parallel to each other, and the partition end plates are perpendicular to the guide rod, and the two partitions are located between the two ring-shaped projections. 1. An annular sealing ring is respectively provided on the side facing the partition end plate; the two partition end plates are located between the two pre-tightened compression springs, and the pre-tightened compression spring is located between the guide sleeve and the partition end plate; the first tuning One port of the pipe communicates with the upper chamber of a hydraulic mount, and the other port communicates with the lower chamber of another hydraulic mount; one port of the second tuning pipe communicates with the lower chamber of a hydraulic mount and the upper chamber of the hydraulic mount communicates with the port of the first tuning pipe, the other port of the second tuning pipe communicates with the upper chamber of another hydraulic mount, and the lower chamber of the hydraulic mount The chamber communicates with the port of the first tuning conduit.

The gear box of this scheme is installed above the top frame; during the working process of the gear box, when the gear box is in the low-frequency vibration area, the liquid in the hydraulic mount flows between the upper and lower chambers, so that the low-frequency vibration energy can be consumed as soon as possible Dispersion, so as to achieve the purpose of reducing the vibration of the gearbox in the low frequency region.

When the gearbox is in the medium-high frequency vibration region, the liquid in the hydraulic mount hardly circulates. At this time, the hydraulic mount accelerates the attenuation process of high-frequency vibration through the elastic deformation characteristics of the decoupling plate; more importantly, it is obtained through experiments Since the first tuning pipeline and the second tuning pipeline of the intercommunicating vibration tuning device communicate with the chambers in the two hydraulic mounts, the liquids in the two hydraulic mounts can be connected through the first tuning pipeline and the second tuning pipeline, Part of the high-frequency vibrations in the two hydraulic suspension chambers cancel each other, thereby effectively improving the vibration reduction and isolation effects of the gearbox in the middle and high frequency regions.

Further, since the vibration in the lower chamber of the hydraulic mount has been attenuated, the vibration frequencies of the upper chamber and the lower chamber of the same hydraulic mount are different, and there are certain differences; One port communicates with the upper chamber of one hydraulic mount, and the other port communicates with the lower chamber of another hydraulic mount (that is, the upper chamber of the hydraulic mount communicates with the lower chamber of another hydraulic mount); One port of the second tuning pipeline communicates with the lower chamber of a hydraulic mount, and the other port communicates with the upper chamber of another hydraulic mount (that is, the upper chamber of the hydraulic mount communicates with the upper chamber of another hydraulic mount In this way, the difference in vibration frequency between the upper chamber and the lower chamber can be used to effectively avoid the vibration superposition in the two hydraulic mount chambers, and further increase the high-frequency vibration in the two hydraulic mount chambers to cancel each other part, to further improve the vibration damping effect of the gearbox in the middle and high frequency region.

On the other hand, although the first tuning pipe and the second tuning pipe are connected to the chambers in the two hydraulic mounts, it is beneficial to improve the vibration damping effect on the gearbox in the middle and high frequency regions, but in the case of low frequency and large amplitude excitation, there are The superimposition of vibrations in the two hydraulic suspension chambers may occur, which affects the normal use of the vibration damping mounting frame. For example, during low-frequency vibration, when one hydraulic mount chamber is in a compressed state and the other hydraulic mount chamber is in a stretched state, the vibrations in the two hydraulic mount chambers are easy to superimpose. Therefore, in order to avoid the superimposition of vibrations in the two hydraulic suspension chambers during low-frequency and large-amplitude excitation, which will affect the normal use of the vibration-damping installation frame; this scheme sets a floating first adaptive partition device on the first tuning pipeline , set a floating second adaptive partition device on the second tuning pipeline to solve this problem. In the low-frequency, large-amplitude excitation process, when the chamber of one hydraulic mount is in a compressed state and the chamber of the other hydraulic mount is in a stretched state among the two hydraulic mounts that are connected to each other; due to the low frequency, During the large-amplitude excitation process, the liquid flow in the hydraulic mount is large, so the liquid in the chamber of the hydraulic mount in the compressed state will flow into the chamber of the hydraulic mount in the stretched state. When a large amount of liquid flows When passing through the first tuning pipeline or the second tuning pipeline, the partition end plate of the floating first or floating second self-adaptive partition device will move to the annular protrusion under the drive of the fluid, and abut against the annular sealing ring, thus Cut off the first tuning pipe or the second tuning pipe to avoid the superposition of vibration in the two hydraulic mount chambers, and ensure the normal use of the vibration damping mounting frame in the low-frequency and large-amplitude excitation process; in the high-frequency vibration area, the hydraulic mount The liquid inside hardly circulates, so this problem does not exist.

Preferably, the hydraulic mount also includes an upper channel plate, a decoupling plate, a lower channel plate and a leather cup distributed sequentially from top to bottom, the upper chamber is located above the upper channel plate, and the lower chamber is located between the lower channel plate and the leather cup. Between the bowls; the first tuning pipeline includes a first vertical long pipeline, a first vertical short pipeline and a first connecting pipeline connecting the lower end of the first vertical long pipeline and the lower end of the first vertical short pipeline, the first vertical pipeline The upper port of a vertical long pipeline passes through a hydraulic mount cup, lower runner plate, decoupling sheet and upper runner plate from bottom to top, and communicates with the upper chamber of the hydraulic mount; the first The upper port of the vertical short pipe passes through the cup of another hydraulic mount from bottom to top, and communicates with the lower chamber of the hydraulic mount; the second tuning pipe includes a second vertical long pipe, the second The vertical short pipe and the second connecting pipe connecting the lower end of the second vertical long pipe and the lower end of the second vertical short pipe, the second vertical long pipe is inserted in the first vertical short pipe, the second vertical The upper port of the long pipe passes through the cup, the lower runner plate, the decoupling plate and the upper runner plate of the hydraulic mount from bottom to top, and communicates with the upper chamber of the hydraulic mount; the second vertical short pipe Sleeved on the first vertical long pipe, the upper port of the second vertical short pipe passes through the cup of another hydraulic mount from bottom to top, and communicates with the lower chamber of the hydraulic mount.

In the structure of this scheme, the second vertical long pipeline is inserted in the first vertical short pipeline, the second vertical short pipeline is sleeved on the first vertical long pipeline, and the first vertical short pipeline, the first vertical The long pipe, the second vertical long pipe and the second vertical short pipe all communicate with the upper and lower chambers of the hydraulic mount through the upper port, so only one through hole needs to be opened at the bottom of the hydraulic mount to realize the two hydraulic pressures. The communication between the mount cavities; at the same time, the existing installation method of the hydraulic mount will not be changed, and the change design of the hydraulic mount structure will be effectively reduced, reducing costs.

As a preference, on the inner side of the first vertical long pipeline, between the cup and the lower runner plate, a first straight communication hole communicating with the lower chamber of the hydraulic mount is provided; on the inner side of the second vertical long pipeline, A second straight communication hole communicating with the lower chamber of the hydraulic mount is provided between the cup and the lower runner plate.

Since the first straight communication hole communicates with the upper and lower chambers of the hydraulic mount, the second direct communication hole communicates with the upper and lower chambers of another hydraulic mount; when the gearbox is in the process of medium frequency vibration (upper, The flow of liquid between the lower chambers is small), because the length of the direct communication hole is small, at this time, the liquid in the upper and lower chambers of the hydraulic mount can be directly connected through the first or second direct communication hole circulation, thereby further improving the vibration damping effect during the medium frequency vibration process.

Preferably, the floating first adaptive isolation device is arranged in the middle of the first connecting pipeline, and the floating second adaptive isolation device is arranged in the middle of the second connecting pipeline.

Preferably, a plurality of flow resistance push plates are arranged on the guide rod between the two partition end plates, and the flow resistance push plates are parallel to the partition end plates.

During low-frequency and large-amplitude excitation, when a large amount of liquid flows through the first tuning pipe or the second tuning pipe, the fluid will push the flow resistance push plate to move, which is beneficial to cooperate with the partition end plate to move toward the annular protrusion and resist Leaning against the annular sealing ring, the first tuning pipeline or the second tuning pipeline is further isolated, so as to avoid the superposition of vibrations in the two hydraulic suspension chambers.

Preferably, the first tuning pipe is a round pipe, the partition end plate is circular, and the center of the partition end plate of the floating first adaptive partition device coincides with the center of the first tuning pipe, and the outer diameter of the partition end plate is It is smaller than the inner diameter of the first tuning pipe between the two annular projections, and the outer diameter of the partition end plate is larger than the outer diameter of the annular sealing ring in the first tuning pipe.

Preferably, the second tuning pipe is a round pipe, the partition end plate is circular, and the center of the partition end plate of the floating second adaptive partition device coincides with the center of the second tuning pipe, and the outer diameter of the partition end plate is It is smaller than the inner diameter of the second tuning pipe between the two annular protrusions, and the outer diameter of the partition end plate is larger than the outer diameter of the annular sealing ring in the second tuning pipe.

Preferably, the annular sealing ring is a Y-shaped sealing ring.

Preferably, the hydraulic mount also includes a base, a rubber main spring and a metal skeleton integrated with the rubber main spring, the metal skeleton is located above the base, the base is connected to the chassis through bolts, and the metal installation skeleton is connected to The top shelf is connected.

The beneficial effect of the present invention is that not only the vibration of the gearbox in the low-frequency region can be damped, but also the effect of damping and isolating the vibration of the gear box in the middle and high-frequency region can be effectively improved.

Description of drawings

FIG. 1 is a structural schematic diagram of a shock-absorbing installation frame for a gear box based on hydraulic suspension according to the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of the floating first adaptive isolation device of the present invention.

In the figure: underframe 1, top frame 2, front hydraulic mount 3a, right front hydraulic mount 3b, base 31, cup 32, lower chamber 33, lower runner plate 34, decoupling plate 35, upper runner plate 36, Upper chamber 37, rubber main spring 38, metal skeleton 39, the first tuning pipe 4, the first vertical long pipe 41, the first connecting pipe 42, the first vertical short pipe 43, the second tuning pipe 5, the second Vertical long pipe 51, second connecting pipe 52, second vertical short pipe 53, first adaptive partition device 6a, flow resistance push plate 61, guide rod 62, partition end plate 63, annular sealing ring 64, annular convex Block 65, pre-tightened compression spring 66, guide sleeve 67, second self-adaptive blocking device 6b.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figure 1, a vibration-damping installation frame for gearboxes based on hydraulic suspension includes a bottom frame 1, a top frame 2 for installing the gearbox, and several hydraulic mounts arranged on the bottom frame for supporting the top frame. . The hydraulic mounts in this embodiment include a left front hydraulic mount 3a, a right front hydraulic mount 3b, a left rear hydraulic mount and a right rear hydraulic mount. The left front, right front, left rear and right rear four hydraulic suspensions are located between the bottom frame and the top frame. The base frame is square. The left front, right front, left rear and right rear four hydraulic mounts are distributed at the four top corners of the chassis. The hydraulic mount in this embodiment is prior art. Each hydraulic mount includes a base 31, a rubber main spring 38, a metal skeleton 39 connected with the rubber main spring, an upper chamber 37, a lower chamber 33, an upper channel plate 36 distributed sequentially from top to bottom, and a decoupling Sheet 35, lower runner plate 34 and leather cup 32. The upper chamber is located above the upper channel plate. The lower chamber is located between the lower runner plate and the cup. The base is connected with the chassis by bolts. A metal skeleton sits above the base. The metal mounting frame is connected to the top frame by bolts.

Among the four hydraulic mounts, a pair of hydraulic mounts is provided with an intercommunicating vibration tuning device, specifically, an intercommunicating vibration tuning device is provided between the left front and right front hydraulic mounts. The intercommunicating vibration tuning device includes a first tuning pipeline 4, a floating first self-adaptive isolation device 6a arranged on the first tuning pipeline, a second tuning pipeline 5 and a floating second self-adaptive isolation device arranged on the second tuning pipeline. Adapt to partition 6b. The first tuning channel and the second tuning channel are circular tubes. The interior of the first tuning pipeline, the second tuning pipeline and the upper chamber and the lower chamber of each hydraulic mount are filled with liquid, and the liquid is ethylene glycol.

The first tuning pipeline includes a first vertical long pipeline 41 , a first vertical short pipeline 43 and a first connecting pipeline 42 connecting the lower end of the first vertical long pipeline and the first vertical short pipeline. One port of the first tuning pipe communicates with the upper chamber of one hydraulic mount (i.e., the left front hydraulic mount), and the other port communicates with the lower chamber of the other hydraulic mount (i.e., the right front hydraulic mount). That is to say, the upper port of the first vertical long pipeline passes through the cup, the lower runner plate, the decoupling plate and the upper runner plate of a hydraulic mount (ie, the left front hydraulic mount) from bottom to top, and connects with the hydraulic mount The upper chamber of the first vertical short pipe passes through the cup of another hydraulic mount (that is, the right front hydraulic mount) from bottom to top, and communicates with the lower chamber of the hydraulic mount. The first vertical long pipeline is in sealing connection with the decoupling sheet. The first vertical short pipe is sealingly connected with the cup.

The second tuning pipeline includes a second vertical long pipeline 51 , a second vertical short pipeline 53 and a second connecting pipeline 52 connecting the lower end of the second vertical long pipeline and the second vertical short pipeline. The second vertically long pipe is inserted in the first vertically short pipe. The second vertical short pipe is sleeved on the first vertical long pipe. A port of the second tuning pipe communicates with the lower chamber of a hydraulic mount (that is, the left front hydraulic mount), and the upper chamber of the hydraulic mount communicates with the port of the first tuning pipe; the second tuning pipe The other port communicates with the upper chamber of the other hydromount (i.e., the right front hydromount), and the lower chamber of this hydromount communicates with the port of the first tuning pipe; specifically, the second vertical The upper port of the long pipe passes through the cup, the lower runner plate, the decoupling plate and the upper runner plate of the hydraulic mount (that is, the right front hydraulic mount) from bottom to top, and communicates with the upper chamber of the hydraulic mount. The upper port of the second vertical short pipe passes through the cup of another hydraulic mount (ie, the left front hydraulic mount) from bottom to top, and communicates with the lower chamber of the hydraulic mount. The second vertical long pipeline and the first vertical short pipeline are arranged on the same hydraulic mount. The second vertical short pipeline and the first vertical long pipeline are arranged on the same hydraulic mount. The second vertical long pipeline is sealed and connected with the decoupling sheet. The second vertical short pipe is sealingly connected with the cup.

A first direct communication hole communicating with the lower chamber of the hydraulic mount is provided on the inner side of the first vertical long pipeline between the cup and the lower runner plate. A second straight communication hole communicating with the lower chamber of the hydraulic mount is provided on the inner side of the second vertical long pipeline between the cup and the lower runner plate.

As shown in Figure 1 and Figure 2, the floating first adaptive partition device is arranged in the middle of the first connecting pipeline. The floating first adaptive partition device includes two ring-shaped projections 65 arranged on the inner side of the first connecting pipe, a guide rod 62 arranged in the first connecting pipe, and two guide sleeves 67 sleeved on the guide rod , two pre-tightened compression springs 66 sleeved on the guide rod and two partition end plates 63 arranged on the guide rod. The guide rod of the floating first adaptive partition device extends along the first connecting pipe, and the guide rod is arranged coaxially with the first connecting pipe. The two guide sleeves of the floating first self-adaptive partition device are respectively connected with the inner wall of the first tuning pipeline through connecting rods. Two ring-shaped bumps are located between the two guide sleeves. The two partition end plates are parallel to each other, and the partition end plates are perpendicular to the guide rod. The two partitions are located between the two annular protrusions. The two partition end plates are located between the two pre-tightened compression springs, and the pre-tightened compression springs are located between the guide sleeve and the partition end plates. The partition end plate is circular, and the center of the partition end plate of the floating first adaptive partition device coincides with the center of the first tuning pipe. Annular sealing rings 64 are respectively provided on the two annular protrusions and on the side facing the partition end plate. The annular sealing ring is arranged around the annular protrusion. The annular sealing ring is a Y-shaped sealing ring. The outer diameter of the partition end plate of the floating first adaptive partition device is smaller than the inner diameter of the first tuning pipe between the two annular protrusions, and the outer diameter of the partition end plate is larger than the outer diameter of the annular sealing ring in the first tuning pipe . On the guide rod of the floating first self-adaptive partition device, there are several flow resistance push plates 61 distributed equidistantly between the two partition end plates, and the flow resistance push plates are parallel to the partition end plates.

The floating second adaptive partition device is arranged in the middle of the second connecting pipeline. The floating second self-adaptive partition device includes two ring-shaped protrusions arranged on the inner surface of the second connecting pipe, a guide rod arranged in the second connecting pipe, two guide sleeves sleeved on the guide rod, two A pre-tightened compression spring sleeved on the guide rod and two partition end plates arranged on the guide rod. The guide rod of the floating second adaptive partition device extends along the second connecting pipe, and the guide rod is arranged coaxially with the second connecting pipe. The two guide sleeves of the floating second self-adaptive partition device are respectively connected with the inner wall of the second tuning pipeline through connecting rods. Two ring-shaped bumps are located between the two guide sleeves. The two partition end plates are parallel to each other, and the partition end plates are perpendicular to the guide rod. The two partitions are located between the two annular protrusions. The two partition end plates are located between the two pre-tightened compression springs, and the pre-tightened compression springs are located between the guide sleeve and the partition end plates. The partition end plate is circular, and the center of the partition end plate of the floating second adaptive partition device coincides with the center of the second tuning pipe. Annular sealing rings are respectively provided on the two annular protrusions and on the side facing the partition end plate. The annular sealing ring is arranged around the annular protrusion. The annular sealing ring is a Y-shaped sealing ring. The outer diameter of the partition end plate of the floating second adaptive partition device is smaller than the inner diameter of the second tuning pipe between the two annular protrusions, and the outer diameter of the partition end plate is larger than the outer diameter of the annular sealing ring in the second tuning pipe . On the guide rod of the floating second self-adaptive partition device, there are several flow resistance push plates distributed equidistantly between the two partition end plates, and the flow resistance push plates are parallel to the partition end plates.

Claims (8)

1. a gear-box vibration damping installing rack based on hydraulic mount, including underframe, if for install gear-box upper frame and The dry hydraulic mount being arranged on underframe for supporting upper frame, described hydraulic mount includes upper chamber and lower chambers, it is characterized in that, Described hydraulic mount is at least provided with between a pair hydraulic mount intercommunication vibration tuner, this intercommunication vibration tuning dress Put and include the first tuning pipeline, the floating type first self adaptation partition apparatus being arranged on the first tuning pipeline, second tune pipe Road and floating the second formula self adaptation partition apparatus being arranged on second tune pipeline；

Described floating type first self adaptation partition apparatus includes the twice annular lug being arranged on the first tuning insides of pipes face, Being arranged on the guide rod in the first tuning pipeline, two are set in the guide pin bushing on guide rod, the pretension compression that two are set on guide rod Spring and two pieces of partition end plates being arranged on guide rod, the guide rod of floating type first self adaptation partition apparatus is along the first tuning pipeline Extending, two guide pin bushings of floating type first self adaptation partition apparatus are connected with the first tuning inner-walls of duct by connecting rod respectively, and two Road annular lug is between two guide pin bushings；Two cut off end plate is parallel to each other, and it is perpendicular with guide rod to cut off end plate, and two partitions are positioned at Between twice annular lug, on two annular lugs, on the side cut off end plate, it is respectively equipped with O-ring seal；Two cut off end Plate is between two pretension compression springs, and pretension compression spring at guide pin bushing and is cut off between end plate；

Described floating type second self adaptation partition apparatus includes the twice annular lug being arranged on second tune insides of pipes face, Being arranged on the guide rod in second tune pipeline, two are set in the guide pin bushing on guide rod, the pretension compression that two are set on guide rod Spring and two pieces of partition end plates being arranged on guide rod, the guide rod of floating type second self adaptation partition apparatus is along second tune pipeline Extending, two guide pin bushings of floating type second self adaptation partition apparatus are connected with second tune inner-walls of duct by connecting rod respectively, and two Road annular lug is between two guide pin bushings；Two cut off end plate is parallel to each other, and it is perpendicular with guide rod to cut off end plate, and two partitions are positioned at Between twice annular lug, on two annular lugs, on the side cut off end plate, it is respectively equipped with O-ring seal；Described two every Broken ends of fractured bone plate is between two pretension compression springs, and pretension compression spring at guide pin bushing and is cut off between end plate；

The described Single port of the first tuning pipeline and the upper chamber of a hydraulic mount are connected, another port and another hydraulic mount Lower chambers be connected；The Single port of described second tune pipeline and the lower chambers of a hydraulic mount are connected, and this hydraulic pressure The upper chamber of suspension is connected with the port of the first tuning pipeline, the another port of second tune pipeline and another hydraulic mount Upper chamber is connected, and the lower chambers of this hydraulic mount is connected with the port of the first tuning pipeline；

Cut off on described guide rod, two and be provided with some flow resistance push pedals being equally spaced between end plates, and flow resistance push pedal and partition End plate is parallel.

Gear-box vibration damping installing rack based on hydraulic mount the most according to claim 1, is characterized in that, described hydraulic suspension Putting upper guidance tape, decoupling sheet, dirty guidance tape and the leather cup also including being sequentially distributed from top to bottom, described upper chamber is positioned at upper runner Above plate, lower chambers is between dirty guidance tape and leather cup；

Described first tuning pipeline includes the first vertical long pipeline, the first vertical short duct and connection the first vertical long pipeline lower end Be connected pipeline with the first of the first vertical short duct lower end, the upper port of the described first vertical long pipeline is from bottom to top through a liquid The leather cup of hydraulic suspension, dirty guidance tape, decoupling sheet and upper guidance tape, and connect with the upper chamber of this hydraulic mount；Described first erects The upper port of straight short duct is from bottom to top through the leather cup of another hydraulic mount, and connects with the lower chambers of this hydraulic mount；

Described second tune pipeline includes the second vertical long pipeline, the second vertical short duct and connection the second vertical long pipeline lower end Be connected pipeline with the second of the second vertical short duct lower end, the described second vertical long pipeline is plugged in the first vertical short duct, The upper port of the second vertical long pipeline passes the leather cup of hydraulic mount, dirty guidance tape, decoupling sheet and upper guidance tape from bottom to top, and Connect with the upper chamber of this hydraulic mount；Described second vertical short duct is set on the first vertical long pipeline, and second is the shortest The upper port of pipeline is from bottom to top through the leather cup of another hydraulic mount, and connects with the lower chambers of this hydraulic mount.

Gear-box vibration damping installing rack based on hydraulic mount the most according to claim 2, is characterized in that, first is the longest The first direct-connected through hole that the lower chambers with hydraulic mount connects it is provided with on insides of pipes face, between leather cup with dirty guidance tape； On second vertical long pipeline medial surface, between leather cup with dirty guidance tape, be provided with that the lower chambers with hydraulic mount connects second Direct-connected through hole.

Gear-box vibration damping installing rack based on hydraulic mount the most according to claim 2, is characterized in that, floating type first Self adaptation partition apparatus is arranged on the middle part of the first connection pipeline, and floating type second self adaptation partition apparatus is arranged on the second connection The middle part of pipeline.

Gear-box vibration damping installing rack based on hydraulic mount the most according to claim 1, is characterized in that, described first adjusts Humorous pipeline is pipe, and described partition end plate is rounded, and floating type first self adaptation partition apparatus cut off end plate center with The center superposition of the first tuning pipeline, this partition end plate external diameter tunes the internal diameter of pipeline less than first between two annular lugs, And the external diameter of this partition end plate is more than the external diameter of the O-ring seal in the first tuning pipeline.

Gear-box vibration damping installing rack based on hydraulic mount the most according to claim 1, is characterized in that, described second adjusts Humorous pipeline is pipe, and described partition end plate is rounded, and floating type second self adaptation partition apparatus cut off end plate center with The center superposition of second tune pipeline, this partition end plate external diameter is less than the internal diameter of the second tune pipeline between two annular lugs, And the external diameter of this partition end plate is more than the external diameter of the O-ring seal in second tune pipeline.

Gear-box vibration damping installing rack based on hydraulic mount the most according to claim 1, is characterized in that, described annular is close Seal is y-type seal ring.

Gear-box vibration damping installing rack based on hydraulic mount the most according to claim 1, is characterized in that, described hydraulic suspension Putting and also include base, rubber spring and the metallic framework being connected as a single entity with rubber spring, metallic framework is positioned at above base, described Base is connected with underframe by bolt, and described metallic framework is connected with upper frame by bolt.