A multifunctional device for vibration and noise isolation

Abstract

The present invention relates to the technical field of devices for isolating vibration or seismic energy under environmental vibration or earthquake, and specifically to a multifunctional device for isolating vibration and noise; it comprises a set of elastomers and corresponding connecting cavities, a group of anti-pullout mechanisms, a self-insulating prestressed rubber ring and a vertical damping system, wherein the elastomer has a circular ring shape and is arranged above the connecting cavity, the anti-pullout mechanism comprises a connecting cover, a pressure plate and a plurality of limit bolts, the connecting cover is mounted on the elastomer, the limit bolts are annularly mounted on the pressure plate, the pressure plate is fixedly connected to the connecting cavity, the self-insulating prestressed rubber ring is arranged between the connecting cavity and the connecting cover to form a closed space, and the vertical damping system comprises a damping cylinder and a damping fluid; it has the functions of isolating vibration, absorbing vibration energy well, reducing secondary noise of buildings, providing sufficient vertical support stiffness and having anti-pullout functions.

Description

Technical Field

[0001] The present invention relates to the technical field of devices for isolating vibration or seismic energy under environmental vibration or earthquake action, and in particular to a multifunctional device for isolating vibration and noise. Background Art

[0002] Environmental vibration is recognized as one of the seven major public hazards. With the rapid development of modern industry and the continuous expansion of urban areas, urban subways and rail transit are becoming an increasingly important means of solving urban transportation problems. While urban subway construction continues to grow, vibration and noise issues caused by subway operation are also gradually emerging. In recent years, my country's subway transportation system has developed rapidly. Since urban subways run through urban centers, while fulfilling the primary transportation function, they also impact the safety of surrounding production buildings (such as precision laboratories, precision machine rooms, semiconductor production workshops, and bioengineering workshops), the safety of historic buildings, and the living environment of residential buildings. Minimizing the micro-resonances caused by external disturbances is crucial for building vibration isolation design.

[0003] The impact of vibration on buildings, equipment and facilities is mainly vertical vibration. At present, there are many vibration isolation devices that can effectively solve the vibration problem, but they do not have the ability to resist pull-out. Under the action of earthquakes with mainly horizontal vibrations, they cannot provide sufficient safety protection for buildings, equipment or facilities, and buildings, equipment and facilities are at risk of overturning and collapsing.

[0004] How to make the vibration isolation bearings effectively isolate vertical vibrations and provide sufficient safety protection under earthquakes is a difficulty in the current vibration control field. Summary of the Invention

[0005] The purpose of the present invention is to provide a multifunctional device for isolating vibration and noise, which has the functions of isolating vibration, absorbing vibration energy effectively, reducing secondary noise of buildings, providing sufficient vertical support stiffness and resisting pull-out.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A multifunctional device for isolating vibration and noise, comprising a set of elastic bodies and corresponding connecting cavities, a group of anti-pullout mechanisms, a self-insulating prestressed rubber ring and a vertical damping system. The elastic body is annular in shape and is arranged on the connecting cavity. The elastic body plays the role of adjusting the frequency and isolating the vibration response. The anti-pullout mechanism comprises a connecting cover, a pressure plate and a plurality of limit bolts. The connecting cover is mounted on the elastic body, and the limit bolts are annularly mounted on the pressure plate. The pressure plate is fixedly connected to the connecting cavity. The anti-pullout mechanism prevents the device from being disengaged and limits the swing of the structure. The self-insulating prestressed rubber ring isolates and transfers load to the active and fixed parts of the device. The vertical damping system absorbs vibration energy. Under normal working conditions, the limit bolts There is a gap between the bolt and the connecting cover. When the device is deformed too much, the limit bolt on the pressure plate limits the vertical movement of the connecting cover. The self-insulating prestressed rubber ring is arranged between the connecting cavity and the connecting cover to form a closed space. The vertical damping system includes a damping cylinder and damping fluid. The damping fluid is filled in the closed space formed by the connecting cavity, the connecting cover and the self-insulating prestressed rubber ring. The self-insulating prestressed rubber ring generates prestress by the extrusion deformation of the connecting cavity and the connecting cover. There is a boss on the inner side of the lower end of the self-insulating prestressed rubber ring, and the boss is used to hook the outer edge of the connecting cover during installation; the damping cylinder is installed at the center bottom of the connecting cover and is placed in the inner circle of the elastomer and immersed in the damping fluid. The connecting cover is processed with a through hole, and the through hole is installed with an intermediate bolt, and the intermediate bolt is a bolt with a vent hole.

[0008] Furthermore, grooves are processed on the upper and lower surfaces of the elastic body, and the grooves connect the inner and outer circles of the elastic body. At the same time, vertical through holes are processed on the grooves, and the vertical through holes connect the grooves on the upper and lower surfaces of the elastic body.

[0009] Furthermore, a surface sealing ring is provided between the connecting cavity and the pressing plate, and an axial sealing ring is provided between the pressing plate and the connecting cover.

[0010] Furthermore, the upper end surface of the connecting cover and the lower end surface of the connecting cavity are both processed with connecting holes.

[0011] Furthermore, the connecting cavity is circular in shape, with a circular cavity processed inside, and a circular concave platform matching the outer diameter of the elastomer is concentrically processed at the bottom of the cavity, with the lower end surface of the elastomer placed on the circular concave platform.

[0012] Furthermore, the connecting cover has a circular shape and is composed of a cover plate and a flange. At the same time, the bottom surface of the cover plate of the connecting cover is concentrically processed with a circular concave platform of the same size as the circular concave platform of the connecting cavity and a circular concave cavity matching the outer diameter of the cylinder of the damping cylinder.

[0013] Furthermore, the damping cylinder is composed of a cylinder and an annular plate, with a threaded through hole provided in the middle. The upper end of the cylinder of the damping cylinder is interference-mounted on the circular concave cavity on the bottom surface of the connecting cover.

[0014] Furthermore, the upper end surface of the connecting cavity is processed with a circular groove, and the flat O-ring is placed in the circular groove and protrudes a portion thereof. At the same time, the outermost edge of the upper end surface of the connecting cavity is also processed with a convex stop.

[0015] Furthermore, a circular groove is processed on the inner side of the pressure plate, and the axial O-ring is placed in the circular groove and protrudes a portion. At the same time, the outermost edge of the lower end face of the pressure plate is also processed with a concave stop that matches the convex stop of the connecting cavity. The pressure plate is concentrically installed on the upper end face of the connecting cavity through the stop, and a plurality of fixing bolts fix the connecting cavity and the pressure plate.

[0016] Furthermore, the device can also be combined with a horizontal seismic isolation device to form a three-way vibration isolation / vibration device for use, and the horizontal seismic isolation device is installed on the connection cover or the connection hole of the connection cavity of the device.

[0017] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0018] 1. The multifunctional vibration and noise isolation device proposed in this patent can be used in combination, and the number of models and arrangements can be flexibly selected according to the load distribution of the protected object.

[0019] 2. Vibration Isolation: The connection cover, mounted on the protected object, and the connection cavity, mounted on the unprotected object or the ground, achieve vertical flexible isolation through an elastic body. The elastic body primarily adjusts the vertical natural frequency of the protected object, isolating vibrations through its own vertical reciprocating deformation.

[0020] Since the rubber ring is made of polymer elastic material and its extrusion volume is controlled within the set range, the vertical stiffness is small, isolating the transmission of vibration and sound; the axial O-ring can realize the sealing function, and relative to the vertical stiffness of the elastomer, the vertical stiffness of the rubber ring and the axial O-ring can be ignored.

[0021] 3. Seismic isolation effect: This patent proposes a multifunctional device for vibration and noise isolation. Since it adjusts the vertical natural frequency of the protected object, it also has a certain function of isolating vertical seismic effects.

[0022] 4. Anti-pullout effect: The limit bolts, pressure plate and connecting cover form an anti-pullout mechanism, which can realize the anti-pullout limiting effect of the vibration isolation support. When the anti-pullout mechanism isolates vibration, there is a certain gap between the lower end face of the limit bolt and the upper end face of the flange of the connecting cover, the pressure plate and the connecting cover are in a separated state, and the vibration isolation support is in a vibration isolation state; when the protected object encounters an earthquake, the anti-pullout mechanism plays an anti-pullout limiting role. The above functions are described in two aspects. First, the vertical earthquake action increases the vertical movement amplitude of the vibration isolation support. The pressure plate and limit bolts of the vibration isolation support can limit the upward movement amplitude of the connecting cover; second, under the action of horizontal earthquakes, the protected object has a large swaying reaction, which makes part of the vibration isolation support appear in a tensile state. The pressure plate and limit bolts of the vibration isolation support can limit the upward movement amplitude of the connecting cover, playing an anti-swaying role for the overall structure.

[0023] 5. Integrated Protection and Isolation: A rubber ring is positioned between the connection cover and the connection cavity. This prestressed rubber ring is appropriately compressed, enabling the vibration isolation support to achieve integrated protection and isolation, isolating the transmission path of vibration and noise within the support. Furthermore, the rubber ring ensures the integrity of the support and, during earthquakes, facilitates the transfer of horizontal loads between the connection cover and the connection cavity.

[0024] 6. Rapid damping effect of vertical vibration attenuation: The inner cavity of the vibration isolation support is filled with viscous damping fluid, a damping cylinder is fixedly connected to the connecting cover, and multiple damping fluid flow channels are provided on the upper and lower end surfaces of the elastomer. During the vertical reciprocating deformation of the elastomer, the connecting cover follows the vertical reciprocating motion of the elastomer. At this time, the damping cylinder fixedly connected to the connecting cover makes vertical reciprocating motion in the viscous damping fluid to generate a damping force; at the same time, during the vertical reciprocating deformation of the elastomer immersed in the viscous damping fluid, its own expansion and contraction deformation and the deformation of the damping fluid flow channel also cause the damping fluid to move and generate a damping force. While providing damping force, the viscous damping fluid converts kinetic energy into heat energy, dissipates vibration energy, and accelerates vibration attenuation. At the same time, the speed and hysteresis of the viscous damping fluid also improve the anti-sway effect of the vibration isolation support.

[0025] 7. The multifunctional vibration and noise isolation device proposed in this patent can also be used in combination with existing horizontal seismic isolation supports, such as horizontal rubber supports and slide supports, to form a three-dimensional vibration isolation support. This is described in detail in Examples 2, 3, and 4 of this patent. Multiple such three-dimensional vibration isolation supports can be flexibly combined to form a three-dimensional vibration isolation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of Example 1 of the present invention;

[0027] Figure 2 for Figure 1 sectional view of

[0028] Figure 3 Schematic diagram of the elastomer structure;

[0029] Figure 4 It is a top view of the elastic body;

[0030] Figure 5 for Figure 4 AA top view;

[0031] Figure 6 Schematic diagram of the rubber ring structure;

[0032] Figure 7 It is a schematic diagram of the connection structure between the rubber ring and the connection cover;

[0033] Figure 8 For Example 1, use the state diagram;

[0034] Figure 9 The limiting bolt in use in Example 1 Figure 1 ;

[0035] Figure 10 The limiting bolt in use in Example 1 Figure 2 ;

[0036] Figure 11 The limiting bolt in use in Example 1 Figure 3 ;

[0037] Figure 12 This is a structural diagram of Example 2;

[0038] Figure 13 This is a structural diagram of a lead rubber bearing in Example 2;

[0039] Figure 14 This is a structural diagram of Example 3;

[0040] Figure 15 This is a structural diagram of a lead rubber bearing in Example 3;

[0041] Figure 16 This is a structural diagram of Example 4.

[0042] Description of the drawings: 1-connecting cover, 2-connecting chamber, 3-pressure plate, 4-damping cylinder, 5-elastomer, 6-rubber ring, 7-flat O-ring, 8-axial O-ring, 9-middle bolt, 10-fixing bolt, 11-limiting bolt, 12-horizontal rubber bearing upper connecting plate, 13-horizontal rubber bearing, 14-horizontal rubber bearing lower connecting plate, 15-polytetrafluoroethylene plate, 16-sliding plate. DETAILED DESCRIPTION

[0043] like Figure 1-14In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] Example 1

[0045] As attached Figure 1 -Attached Figure 2 As shown, a multifunctional device for vibration and noise isolation consists of a connecting cover 1, a connecting cavity 2, a pressure plate 3, a damping cylinder 4, an elastomer 5, a rubber ring 6, a planar O-ring 7, an axial O-ring 8, an intermediate bolt 9, a fixing bolt 10 and a limit bolt 11.

[0046] The upper end surface of the connection cover 1 is processed with a connection hole, and the vibration isolation support is connected to the protected object through the connection hole of the connection cover 1. The lower end surface of the connection cavity 2 is processed with a connection hole, and the vibration isolation support is connected to the non-protected object or the ground through the connection hole of the connection cavity 2.

[0047] As attached Figure 3 and attached Figure 4 and attached Figure 5 As shown, the elastic body 5 is an annular rubber, and the upper and lower end surfaces of the elastic body 5 are processed with cross-orthogonal grooves as viscous damping liquid flow channels. At the same time, vertical connecting holes are also processed on the grooves corresponding to the upper and lower end surfaces to connect the grooves at the upper and lower ends.

[0048] The connecting cavity 2 is circular in shape and has a circular cavity machined inside. The bottom of the cavity is also concentrically machined with a circular concave platform that matches the outer diameter of the elastic body 5. The lower end surface of the elastic body 5 is placed on the circular concave platform, and the cavity wall of the circular concave platform limits the horizontal movement of the elastic body 5.

[0049] As attached Figure 6 As shown, a small boss extending inward is provided at the lower end of the cross section of the rubber ring 6 .

[0050] As attached Figure 1 As shown, the connecting cover 1 has a circular shape and is composed of a cover plate and a flange. At the same time, the bottom surface of the cover plate of the connecting cover 1 is concentrically processed with a circular concave platform of the same size as the circular concave platform of the connecting cavity 2 and a circular concave cavity matching the outer diameter of the cylinder of the damping cylinder 4.

[0051] The damping cylinder 4 is composed of a cylinder and an annular plate, with a threaded through hole in the middle. The upper end of the cylinder of the damping cylinder 4 is interference-fitted on the circular concave cavity on the bottom surface of the connecting cover 1 .

[0052] As attached Figure 1 and attached Figure 7As shown, the rubber ring 6 fits over the flange of the connecting cover 1, with its small projection hooking onto the bottom of the flange. At this point, the outer diameter of the rubber ring 6 is slightly larger than the inner diameter of the circular cavity of the connecting chamber 2. The connecting cover 1, along with the rubber ring 6, is installed into the circular cavity of the connecting chamber 2. Because the outer diameter of the rubber ring 6 is slightly larger than the inner diameter of the circular cavity of the connecting chamber 2, the rubber ring 6 is squeezed and deformed during installation. Once installed, the circular recess on the bottom surface of the connecting cover 1 fits over the elastic body 5, and the cavity wall of the circular recess also restricts the horizontal movement of the elastic body 5.

[0053] As attached Figure 1 As shown, the upper end surface of the connecting cavity 2 is processed with a circular groove, and the flat O-ring 7 is placed in the circular groove and protrudes a portion. At the same time, the outermost edge of the upper end surface of the connecting cavity 2 is also processed with a convex stop.

[0054] The pressure plate 3 is annular in shape, with an outer diameter identical to that of the connecting chamber 2 and an inner diameter slightly larger than the outer diameter of the connecting cover 1. A circular groove is machined into the inner side of the pressure plate 3, into which the axial O-ring 8 is positioned, protruding a portion. The outermost edge of the lower end surface of the pressure plate 3 is machined with a concave stop that mates with the convex stop of the connecting chamber 2.

[0055] The pressure plate 3 is concentrically mounted on the upper end surface of the connecting chamber 2 through a stopper, and a plurality of fixing bolts 10 securely connect the connecting chamber 2 and the pressure plate 3. At this point, the planar O-ring 7 is deformed by the flat surface of the pressure plate 3, achieving a sealed state. The axial O-ring 8 is also deformed by the axial surface of the outer edge of the connecting cover 1, achieving a sealed state.

[0056] As attached Figure 1 As shown, the lower end surface of the limiting bolt 11 is flat rather than pointed. The pressure plate 3 is also provided with a circular threaded through hole. After the pressure plate 3 is installed on the connecting cavity 2, multiple limiting bolts 11 are installed on the pressure plate 3, and the lower end surface of each limiting bolt 11 abuts against the flange of the connecting cover 1.

[0057] As attached Figure 1 As shown, the center of the cover plate of the connecting cover 1 is also machined with a countersunk through-hole, and the damping cylinder 4, which is interference-fitted with the bottom surface of the connecting cover 1, is also provided with a threaded through-hole in the center. Therefore, the center of the connecting cover 1 serves as an oil filling hole for injecting viscous damping fluid. After the viscous damping fluid is poured from the connecting cover 1 into the middle of the elastic body 5, it flows through the cross-shaped grooves provided on the lower end surface of the elastic body 5 to the periphery of the vibration isolation support. The annular plate of the damping cylinder 4 is completely immersed in the viscous damping fluid.

[0058] As attached Figure 1As shown, after the viscous damping fluid is poured, the middle bolt 9 is placed in the countersunk through hole of the connecting cover 1 and is screwed to the damping cylinder 4. The middle bolt 9 is provided with a T-shaped vent hole.

[0059] As attached Figure 8 As shown in the figure, the upper part of the vibration isolation support is connected to the protected object through the connecting cover 1, and the lower part is connected to the non-protected object or the ground through the connecting cavity 2. The weight of the protected object acts on the end surface 1, that is, the attached Figure 7 At the same time, the non-protected objects or the ground will exert a reaction force on the bottom of the connection cavity 2, that is, the attached Figure 7 Therefore, the elastic body 5 deforms under the action of the upper load and the supporting load, as shown in the attached Figure 7 As shown in FIG, its thickness is compressed, and the outer and inner sides bulge. The connecting cover 1 also moves downward following the compression of the elastic body 5. At this time, the lower end surface of the limiting bolt 11 is separated from the connecting cover 1. Figure 9 shown.

[0060] At this time, all the limit bolts 11 are removed, and the surface of each limit bolt 11 is filled with thread glue, and re-screwed until it is against the flange of the connecting cover 1 again, and a set torque is applied to each limit bolt 11, as shown in the attached figure. Figure 10 After completing this step, each limit bolt 11 is loosened at a certain angle as set. This allows each limit bolt 11 to move upward by the same distance, as shown in the attached figure. Figure 11 After the thread glue is cured, the vibration isolation support is ready for use.

[0061] Example 2

[0062] This patent proposes a multifunctional device for isolating vibration and noise, which can also be combined with a horizontal rubber support at the bottom of the connecting cavity 2 to form a three-dimensional vibration isolation (vibration) support type I, as shown in the attached figure. Figure 12 and attached Figure 13 As shown. Figure 13 The type of horizontal rubber bearing given is a lead rubber bearing, but this embodiment is also applicable to a non-lead rubber bearing.

[0063] The upper connecting plate 11 of the horizontal rubber support is placed on the upper end surface of the horizontal rubber support 12 and is fixedly connected to the upper end surface of the horizontal rubber support 12 by fastening bolts. The lower connecting plate 13 of the horizontal rubber support is placed on the lower end surface of the horizontal rubber support 12 and is fixedly connected to the lower end surface of the horizontal rubber support 12 by fastening bolts.

[0064] This patent proposes a multifunctional vibration and noise isolation device with a connection cavity 2 having threaded holes machined into its bottom surface. The upper connecting plate 11 of the horizontal rubber bearing is fixedly connected to the connection cavity 2 via fastening bolts, forming the three-dimensional vibration isolation bearing type I. The lower connecting plate 13 of the horizontal rubber bearing is mounted and connected to an unprotected object or the ground, while the upper end surface of the connection cover 1 is mounted and connected to the protected object.

[0065] The three-dimensional vibration isolation bearing type I is designed to vertically isolate and dissipate vertical vibrations and a portion of vertical seismic action using a multifunctional vibration and noise isolation device. Horizontally, the horizontal rubber bearing 12 adjusts the horizontal natural frequency of the protected object, isolating and dissipating horizontal seismic action through its own horizontal reciprocating deformation.

[0066] Example 3

[0067] This patent proposes a multifunctional device for isolating vibration and noise, in which the top surface of the connecting cover 1 can also be combined with a horizontal rubber support to form a three-dimensional vibration isolation (vibration) support type II, as shown in the attached Figure 14 and attached Figure 15 As shown. Figure 15 The type of horizontal rubber bearing given is a lead rubber bearing, but this embodiment is also applicable to a non-lead rubber bearing.

[0068] The upper connecting plate 11 of the horizontal rubber support is placed on the upper end surface of the horizontal rubber support 12 and is fixedly connected to the upper end surface of the horizontal rubber support 12 by fastening bolts. The lower connecting plate 13 of the horizontal rubber support is placed on the lower end surface of the horizontal rubber support 12 and is fixedly connected to the lower end surface of the horizontal rubber support 12 by fastening bolts.

[0069] This patent proposes a multifunctional vibration and noise isolation device with a connection cover 1 having a threaded hole on its top surface. The upper connecting plate 11 of the horizontal rubber bearing is fixedly connected to the connection cavity 2 via fastening bolts, forming the three-dimensional vibration isolation bearing type II. The lower connecting plate 13 of the horizontal rubber bearing is mounted and connected to an unprotected object or the ground, while the lower end surface of the connection cavity 2 is mounted and connected to the protected object.

[0070] The three-dimensional vibration isolation bearing type II vertically isolates and dissipates vertical vibrations and a portion of vertical seismic action through the multifunctional vibration and noise isolation device. Horizontally, the horizontal rubber bearing 12 adjusts the horizontal natural frequency of the protected object, isolating and dissipating horizontal seismic action through its own horizontal reciprocating deformation.

[0071] Example 4

[0072] This patent proposes a multifunctional device for isolating vibration and noise, in which the top surface of the connecting cover 1 can also be combined with the slide support to form a three-dimensional vibration isolation (vibration) support type III, as shown in the attached Figure 16 As shown. The top surface of the connection cover 1 can also be machined into a circular concave, onto which a polytetrafluoroethylene plate 15 (commonly known as a PTFE plate) is embedded and fixed. The polytetrafluoroethylene plate 15 is circular in shape, and its thickness is greater than the height of the circular concave on the top surface of the connection cover 1. A sliding plate 16 is mounted on the polytetrafluoroethylene plate 15. The upper end surface of the sliding plate 16 is mounted and connected to the protected object, and the lower end surface of the sliding plate 16 is machined into a high-quality low-friction surface. This low-friction surface contacts the polytetrafluoroethylene plate 15, forming the three-dimensional vibration isolation support type III.

[0073] The upper end surface of the sliding plate 16 is installed and connected to the protected object, and the lower end surface of the connecting cavity 2 is installed and connected to the protected object.

[0074] The Type III 3D vibration isolation bearing uses a multifunctional vibration and noise isolation device to vertically isolate and dissipate vertical vibrations, as well as a portion of vertical seismic effects. Horizontally, the sliding plate bearing cushions horizontal seismic effects through low-friction sliding between its sliding plate 16 and the polytetrafluoroethylene plate 15. It does not inherently provide horizontal restoring stiffness. The Type III 3D vibration isolation bearing can be used in combination with other 3D vibration isolation bearings that have horizontal restoring stiffness.

[0075] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by those skilled in the art in the art to which the present invention pertains. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless defined as such herein, will not be interpreted in an idealized or overly formal sense.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A multifunctional device for vibration and noise isolation, characterized by: The invention comprises a set of elastic bodies (5) and corresponding connecting cavities (2), a set of anti-pullout mechanisms, a self-insulating prestressed rubber ring (6) and a vertical damping system, wherein the elastic body (5) is annular in shape and is arranged on the connecting cavity (2), the anti-pullout mechanism comprises a connecting cover (1), a pressure plate (3) and a plurality of limit bolts (11), the connecting cover (1) is mounted on the elastic body (5), the limit bolts (11) are annularly mounted on the pressure plate (3), the pressure plate (3) is fixedly connected to the connecting cavity (2), the self-insulating prestressed rubber ring (6) is arranged between the connecting cavity (2) and the connecting cover (1) to form a closed space, and the vertical damping system comprises a damping cylinder (4) and a damping fluid, wherein the damping fluid is filled in the closed space formed by the connecting cavity (2), the connecting cover (1) and the self-insulating prestressed rubber ring (6); the damping cylinder (4) is mounted on the connecting cover (1 ) is placed at the center bottom of the elastic body (5) and is immersed in the damping liquid. The connecting cover (1) is processed with a through hole, and the through hole is installed with an intermediate bolt (9), and the intermediate bolt (9) is a bolt with a vent hole; the upper and lower surfaces of the elastic body (5) are processed with grooves, and the grooves are connected to the inner and outer circles of the elastic body (5). At the same time, a vertical through hole is processed on the groove, and the vertical through hole is connected to the upper and lower grooves of the elastic body (5); the outer shape of the connecting cover (1) is circular, and the connecting cover (1) is composed of a cover plate and a flange. At the same time, the bottom surface of the cover plate of the connecting cover (1) is concentrically processed with a circular concave platform of the same size as the circular concave platform of the connecting cavity (2) and a circular concave cavity matching the outer diameter of the cylinder of the damping cylinder (4); the damping cylinder (4) is composed of a cylinder and a circular ring plate, and a threaded through hole is provided in the middle. The upper end of the cylinder of the damping cylinder (4) is interference-mounted on the circular concave cavity on the bottom surface of the connecting cover (1).

2. A multifunctional device for vibration and noise isolation according to claim 1, characterized in that: A surface sealing ring is provided between the connecting cavity (2) and the pressing plate (3), and an axial sealing ring is provided between the pressing plate (3) and the connecting cover (1).

3. The multifunctional device for vibration and noise isolation according to claim 1, characterized in that: The upper end surface of the connecting cover (1) and the lower end surface of the connecting cavity (2) are both processed with connecting holes.

4. The multifunctional device for vibration and noise isolation according to claim 1, characterized in that: The connecting cavity (2) is circular in shape, and a circular cavity is processed inside. The bottom of the cavity is also concentrically processed with a circular concave platform that matches the outer diameter of the elastic body (5), and the lower end surface of the elastic body (5) is placed on the circular concave platform.

5. The multifunctional device for vibration and noise isolation according to claim 1, characterized in that: The upper end surface of the connecting cavity (2) is processed with a circular groove, and the flat O-ring (7) is placed in the circular groove and protrudes a portion thereof. At the same time, the outermost edge of the upper end surface of the connecting cavity (2) is also processed with a convex stop.

6. The multifunctional device for vibration and noise isolation according to claim 1, characterized in that: A circular groove is machined on the inner side of the pressure plate (3), and an axial O-ring (8) is placed in the circular groove and protrudes a portion thereof. At the same time, a concave stop that matches the convex stop of the connecting cavity (2) is also machined on the outermost edge of the lower end surface of the pressure plate (3). The pressure plate (3) is concentrically mounted on the upper end surface of the connecting cavity (2) through the stop, and a plurality of fixing bolts (10) fix the connecting cavity (2) and the pressure plate (3) together.

7. The multifunctional device for vibration and noise isolation according to claim 1, characterized in that: The device is combined with a horizontal vibration isolation device to form a three-way vibration isolation / vibration device for use. The horizontal vibration isolation device is installed on the connection cover (1) or the connection hole of the connection cavity (2) of the device.

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