CN214614718U

CN214614718U - Vibration isolation device

Info

Publication number: CN214614718U
Application number: CN202120313140.XU
Authority: CN
Inventors: 周云; 凌海媚; 梁秋河; 李钧睿
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-11-05
Anticipated expiration: 2031-02-03

Abstract

The utility model relates to a vibration and noise control technical field discloses a vibration isolation device, including top-connecting plate, vertical vibration isolation unit, well board, horizontal vibration isolation unit and the lower connecting plate of making that top-down set gradually, wherein, vertical vibration isolation unit includes the box and top-down fixed connection's in proper order first rubber layer, space bar and second rubber layer in the box, the one end opening of box, the top-connecting plate lid closes to be fixed on the opening, even interval is fixed on the first rubber layer is provided with a plurality of vibration isolation springs. The utility model discloses can effectively reduce the micro-vibration that track traffic induced, improve the damping effect, effectively solve the vibration noise problem of track traffic upper cover structure.

Description

Vibration isolation device

Technical Field

The utility model relates to a vibration and noise control technical field especially relate to an isolation mounting.

Background

The earthquake is a complex three-dimensional space motion, and comprises a horizontal direction (X, Y direction) and a vertical direction (Z direction), the traditional research on the seismic isolation technology mainly considers the damping effect in the horizontal direction, the seismic damage is mainly caused by the action of the horizontal earthquake, and the vertical earthquake acceleration is only equal to 0.65 of the horizontal acceleration. However, a large number of earthquake records show that the damage effect of the vertical component of the earthquake action on the building cannot be ignored, particularly in a high-intensity area and a seismic center area, the vertical earthquake component is extremely obvious, and on the other hand, the environmental vibration caused by the development of rail transit has influence on the work and life of people, and measures for isolating the vertical vibration are also needed. Therefore, studies on three-dimensional vibration damping devices have been made.

At present, a common three-dimensional vibration isolation device comprises a horizontal support and a vertical support, wherein the horizontal support is a rubber vibration isolation support, a thick rubber vibration isolation support, a friction pendulum vibration isolation support and the like, and the vertical support is a vibration attenuation device which is vertically combined by one or more of a disc spring, a spiral spring, an oil damper and the like.

Different from a common three-dimensional vibration isolation device, the rail transit upper cover structure needs to face long-term and repeated vertical micro vibration induced by a subway, and the rail transit upper cover is of a common micro high-rise or even super high-rise structure, and the support bears large tensile and compressive stress. Therefore, the three-dimensional vibration isolation device has the following main characteristics: the vertical micro-vibration induced by subway for a long time can be borne, and the vertical fatigue performance of the support is better; the vertical acceleration induced by the subway and having wide vibration frequency range and tiny vibration can be effectively reduced, and the vertical micro-vibration damping performance is better; can bear the great compressive stress of upper cover structure transmission, vertical bearing capacity satisfies the requirement. However, the existing three-dimensional vibration isolation device is difficult to effectively reduce the vibration and noise induced and transmitted to the upper cover structure by the subway, so that the super high-rise structure of the upper cover of the subway is difficult to meet the standard requirements on the vibration and the noise.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, an object of the present invention is to provide a vibration isolation device to solve the problem that the conventional vibration isolation device is difficult to effectively reduce the vibration and noise induced to the upper cover structure by the subway.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

vibration isolation device, including upper junction plate, vertical vibration isolation unit, well board, horizontal vibration isolation unit and the lower connecting plate of making that top-down set gradually, wherein, vertical vibration isolation unit includes the box and top-down fixed connection's in proper order first rubber layer, space bar and second rubber layer in the box, the one end opening of box, the upper junction plate lid closes to be fixed on the opening, even interval is fixed on the first rubber layer is provided with a plurality of vibration isolation springs.

Preferably, the middle making plate comprises a bottom plate and a supporting column, one end of the supporting column is arranged on the upper surface of the bottom plate, a first through hole for the supporting column to pass through is formed in the bottom of the box body, a second through hole for the supporting column to pass through is formed in the second rubber layer, a groove is formed in the lower surface of the partition plate, the other end of the supporting column passes through the first through hole and the second through hole and is inserted into the groove, and a gap is formed between the upper surface of the bottom plate and the bottom of the box body.

Preferably, a central axis of one of the plurality of isolation springs is disposed coaxially with a central axis of the first rubber layer, the other isolation springs of the plurality of isolation springs are disposed on an outer peripheral side of the central isolation spring, and the other isolation springs of the plurality of isolation springs are uniformly arranged in a circumferential direction of the first rubber layer.

Preferably, the vibration isolation spring is integrally vulcanized with the first rubber layer.

Preferably, the first rubber layer is vulcanized and bonded with the upper connecting plate and the partition plate; the second rubber layer is vulcanized and bonded with the partition plate and the bottom of the box body.

Preferably, the lower surface of the middle plate is bonded to the horizontal vibration isolation unit by vulcanization.

Preferably, the diameter of the first rubber layer and the diameter of the second rubber layer are both smaller than the inner diameter of the box body, and the diameter of the partition plate is equal to the inner diameter of the box body.

Preferably, the upper surface of the partition plate is provided with a plurality of first protrusions, each first protrusion corresponds to one vibration isolation spring, the first protrusions are arranged on the inner peripheral side of the corresponding vibration isolation spring, the outer diameter of each first protrusion is equal to the inner diameter of the corresponding vibration isolation spring, the lower surface of the first rubber layer is provided with a plurality of first grooves matched with the first protrusions, and the first protrusions are inserted into the first grooves.

Preferably, the lower surface of the upper connecting plate is provided with a plurality of second protrusions, each second protrusion corresponds to one vibration isolation spring, the second protrusions are arranged on the inner peripheral side of the corresponding vibration isolation spring, the outer diameter of each second protrusion is equal to the inner diameter of the corresponding vibration isolation spring, the upper surface of the first rubber layer is provided with a plurality of second grooves matched with the second protrusions, and the second protrusions are inserted into the second grooves.

Preferably, the first protrusion is circular or cylindrical, and the second protrusion is circular or cylindrical.

The embodiment of the utility model provides a vibration isolation device compares with prior art, and its beneficial effect lies in:

the vibration isolation device provided by the embodiment of the utility model has the advantages that the plurality of vibration isolation springs are fixedly arranged through the first rubber layer, so that the micro-vibration induced by rail transit is effectively reduced, the vibration attenuation effect is improved, and the problem of vibration noise of the upper cover structure of rail transit is effectively solved; the utility model discloses a well vertical vibration isolation unit of board series connection and horizontal vibration isolation unit are made, realize the motion decoupling zero of vibration isolation device at horizontal direction and vertical direction to realize the functional partition of vertical damping and horizontal vibration isolation, satisfy not equidirectional vibration isolation damping function demand, can have good vibration isolation effect to polytype vibration source, and level and vertical multidimension degree vibration input.

Drawings

Fig. 1 is a perspective view of a vibration damping device according to an embodiment of the present invention;

fig. 2 is a sectional view of a vibration isolating device according to an embodiment of the present invention;

fig. 3 is a perspective assembly view of the vibration isolation device according to the embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a case in an embodiment of the present invention;

FIG. 5 is a schematic view of the upper surface structure of the partition board in the embodiment of the present invention;

FIG. 6 is a schematic view of the lower surface structure of the partition plate according to the embodiment of the present invention;

in the figure, 10, an upper connecting plate; 20. a vertical vibration isolation unit; 30. making a plate; 40. a horizontal vibration isolation unit; 50. a lower connecting plate; 60. an upper buttress; 70. a lower buttress;

21. a box body; 211. a first through hole; 22. a first rubber layer; 221. a vibration isolation spring; 23. a second rubber layer; 231. a second through hole; 24. a partition plate; 241. a first protrusion; 242. a groove;

31. a base plate; 32. and (4) a support column.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Vibration isolation device is used for the vibration isolation damping of track traffic upper cover structure, sets up at last buttress 60 and down between buttress 70, wherein, goes up the buttress 60 and indicates the buttress of track traffic upper cover structure, and lower buttress 70 indicates the buttress of track traffic.

As shown in fig. 1 to 3, a vibration isolation device according to a preferred embodiment of the present invention includes an upper connecting plate 10, a vertical vibration isolation unit 20, a middle plate 30, a horizontal vibration isolation unit 40, and a lower connecting plate 50, which are sequentially arranged from top to bottom, wherein the upper connecting plate 10 is connected to an upper pier 60, and may be connected by bolts; the lower connecting plate 50 is connected with the lower buttress 70 and can be connected through bolts; the vertical vibration isolation unit 20 is used for vertical vibration isolation, the horizontal vibration isolation unit 40 is used for horizontal vibration isolation, and the middle working plate 30 is arranged between the vertical vibration isolation unit 20 and the horizontal vibration isolation unit 40, so that motion decoupling in the horizontal direction and the vertical direction is realized, and functional partitioning of vertical vibration attenuation and horizontal vibration isolation is realized. In this embodiment, the upper connecting plate 10 and the lower connecting plate 50 are both square; in other embodiments, the upper connecting plate 10 and the lower connecting plate 50 may have other shapes, such as rectangular or circular shapes.

Preferably, the vertical vibration isolation unit 20 includes a box 21, a first rubber layer 22, a second rubber layer 23 and a partition plate 24, one end of the box 21 is open, and the upper connection plate 10 is covered and fixed on the opening, for example, the top of the wall surface of the box 21 may be connected with the upper connection plate 10 through a bolt; the first rubber layer 22, the partition plate 24 and the second rubber layer 23 are sequentially arranged in the box body 21 from top to bottom, the first rubber layer 22 and the second rubber layer 23 are arranged at intervals and are separated by the partition plate 24, preferably, the first rubber layer 22, the upper connecting plate 10 and the partition plate 24 are vulcanized and bonded, specifically, the upper surface of the first rubber layer 22 is vulcanized and bonded with the lower surface of the upper connecting plate 10, and the lower surface of the first rubber layer 22 is vulcanized and bonded with the upper surface of the partition plate 24; the second rubber layer 23 is vulcanized and bonded with the partition plate 24 and the bottom of the box body 21, specifically, the upper surface of the second rubber layer 23 is vulcanized and bonded with the lower surface of the partition plate 24, and the lower surface of the second rubber layer 23 is vulcanized and bonded with the bottom of the box body 21; a plurality of vibration isolation springs 221 are fixedly arranged on the first rubber layer 22, the vibration isolation springs 221 are uniformly arranged on the first rubber layer 22, and the vibration isolation springs are not arranged on the second rubber layer 23. Preferably, the vibration isolation spring is integrally vulcanized with the first rubber layer. Specifically, the vulcanization setting means that a vulcanizing agent is added to the first rubber layer 22, so that the first rubber layer 22 and the plurality of vibration isolation springs 221 are vulcanized and bonded together. The plurality of vibration isolation springs 221 are arranged in parallel, so that the fatigue performance of the vibration isolation springs is good, vibration can be effectively reduced for a long time, and the vibration reduction effect is improved. The isolation spring 221 may be a coil spring.

In the utility model, the vertical vibration isolation unit 20 can meet the vertical pressure-bearing requirement by fixedly arranging the first rubber layer and the vibration isolation spring, effectively reduce the micro-vibration induced by the rail transit, improve the vibration attenuation effect and effectively solve the vibration noise problem of the upper cover structure of the rail transit; the utility model discloses a well board 30 series connection vertical vibration isolation unit 20 and horizontal vibration isolation unit 40 realize the vibration isolation device at the motion decoupling zero of horizontal direction and vertical direction to realize the functional partition of vertical damping and horizontal vibration isolation, satisfy not equidirectional vibration isolation damping functional requirement.

As shown in fig. 3, the middle working plate 30 includes a bottom plate 31 and a supporting column 32, one end of the supporting column 32 is disposed on the upper surface of the bottom plate 31, and the other end of the supporting column 32 penetrates through the bottom of the box 21 and the second rubber layer 23 and is inserted into the partition plate 24, so as to effectively ensure the connection between the vertical vibration isolation unit 20 and the horizontal vibration isolation unit 40, and thus ensure the integrity of the vibration isolation device; correspondingly, as shown in fig. 4, the bottom of the box 21 is provided with a first through hole 211 for the end of the supporting column 32 to pass through, the second rubber layer 23 is provided with a second through hole 231 for the end of the supporting column 32 to pass through, and the diameters of the first through hole 211 and the second through hole 231 are equal to the diameter of the supporting column 32; as shown in fig. 6, the lower surface of the partition plate 24 is provided with a groove 242 into which the end of the supporting column 32 is inserted, the shape of the groove 242 matching the outer peripheral shape of the supporting column 32, and the supporting column 32 is inserted into the groove 242 without penetrating through the partition plate 24, so that the partition plate 24 can be supported by the supporting column 32. The bottom plate 31 has a certain thickness, a gap is formed between the upper surface of the bottom plate 31 and the bottom of the box body 21, so that the vertical vibration isolation unit 20 can move vertically, and the vertical vibration isolation unit 20 can move relatively with the support column 32 as an axis. Preferably, the lower surface of the bottom plate 31 is bonded to the horizontal vibration isolation unit 40 by vulcanization.

Preferably, a central axis of one of the plurality of isolation springs 221 is disposed coaxially with a central axis of the first rubber layer 22, at a center of the first rubber layer 22, the other isolation springs 221 of the plurality of isolation springs 221 are disposed at an outer peripheral side of the central isolation spring 221, and the other isolation springs 221 of the plurality of isolation springs 221 are uniformly arranged in a circumferential direction of the first rubber layer 22. For example, as shown in fig. 3, one isolation spring 221 is provided at the center of the first rubber layer 22, four isolation springs 221 are provided on the outer peripheral side of the center isolation spring 221, and the four isolation springs 221 are arranged uniformly in the circumferential direction. When the outer edge of the first rubber layer 22 is circular, the center connecting lines of the four isolation springs 221 located on the outer peripheral side are circular and form a concentric ring with the outer edge of the first rubber layer 22.

As shown in fig. 3, the supporting column 32 is disposed perpendicular to the bottom plate 31, and the supporting column 32 is disposed coaxially with the central axis of the bottom plate 31; further, the center axis of the support column 32 is aligned with the center axis of the partition plate 24 to support the partition plate 24 with the support column 32, thereby supporting the vertical vibration isolation unit 20.

Alternatively, in this embodiment, the outer edge of the bottom plate 31 is circular, and the supporting column 32 is a cylinder. In other embodiments, the shape of the outer edge of the bottom plate 31 may be other shapes, such as square, and the support column 32 may be a square column or an elliptic column. Further, optionally, the bottom plate 31 and the supporting pillar 32 are both made of steel, and the bottom plate 31 and the supporting pillar 32 may be two independent components or may be integrally formed.

Preferably, the diameter of the first rubber layer 22 and the diameter of the second rubber layer 23 are both smaller than the inner diameter of the box body 21, so that the first rubber layer 22 and the second rubber layer 23 can be deformed transversely when bearing vertical pressure; further, it is preferable that the diameter of the partition plate 24 is equal to the inner diameter of the case 21.

As shown in fig. 5, the upper surface of the partition plate 24 is provided with a plurality of first protrusions 241, the central axes of the plurality of first protrusions 241 are parallel to each other, each first protrusion 241 corresponds to one vibration isolation spring 221, the first protrusions 241 are disposed on the inner circumferential side of the corresponding vibration isolation spring 221, the outer diameter of the first protrusions 241 is equal to the inner diameter of the corresponding vibration isolation spring 221, so as to fix the bottom of the corresponding vibration isolation spring 221 by the first protrusions 241, correspondingly, the lower surface of the first rubber layer 22 is provided with a plurality of first grooves matching with the first protrusions 241 of the partition plate 24, and the first protrusions 241 of the partition plate 24 are inserted into the corresponding first grooves, respectively. Preferably, the first protrusion 241 may have a circular or cylindrical shape. The first protrusion 241 has a certain height, and the first protrusion 241 having a ring shape has a certain thickness. Preferably, the height of the first protrusion 241 is 20 mm.

Further, a plurality of second protrusions are disposed on the lower surface of the upper connecting plate 10, each of the second protrusions corresponds to one of the vibration isolation springs 221, the second protrusions are disposed on the inner circumferential side of the corresponding vibration isolation spring 221, the outer diameter of each of the second protrusions is equal to the inner diameter of the corresponding vibration isolation spring 221, so that the top of the corresponding vibration isolation spring 221 is fixed by the second protrusions, correspondingly, a plurality of second grooves matched with the second protrusions of the upper connecting plate 10 are disposed on the upper surface of the first rubber layer 22, and the second protrusions are respectively inserted into the corresponding second grooves. Preferably, the second protrusion may have a circular ring shape or a cylindrical shape. The second bulge has a certain height, and the second bulge in the shape of a circular ring has a certain thickness. Preferably, the height of the second protrusion is 10 mm.

In this embodiment, the first protrusions 241 and the second protrusions correspond to each other one by one, have the same outer diameter, and are equal to the inner diameter of the corresponding isolation springs 221, so as to fix the bottom and the top of the same isolation spring 221, respectively, and thus fix the corresponding isolation springs 221. In other embodiments, the first protrusions 241 may be provided only on the upper surface of the partition plate 24 or the second protrusions may be provided only on the lower surface of the upper connecting plate 10 according to the use requirement.

It should be noted that the shapes of the first protrusion 241 and the second protrusion may be the same or different; the heights may be the same or different, and the sum of the heights of the first and

second protrusions

241 and 221 is less than the height of the isolation spring 221.

Optionally, the upper connecting plate 10 is bolted to the box body 21, specifically, the upper connecting plate 10 is bolted to the outer edge of the box body 21; the lower connection plate 50 is bolted to the horizontal vibration isolation unit 40.

It should be noted that, the utility model discloses well vertical vibration isolation unit 20 not only can reduce the microvibration that induces because of rail transit, moreover, can keep apart the vertical vibration of earthquake.

In this embodiment, the horizontal vibration isolation unit 40 is a laminated natural rubber mount, a laminated lead rubber mount, or a high damping rubber mount to perform horizontal vibration isolation. The horizontal vibration isolation unit 40 is preferably a laminated natural rubber mount. The laminated natural rubber support has the characteristics of stable and reliable performance and wide application in the industry, has higher vertical rigidity and vertical bearing capacity, can provide smaller rigidity for the horizontal direction, and is favorable for obtaining a good vibration isolation effect.

In the actual design, according to the actual dynamic characteristics of the vibration-isolated upper cover structure and the vibration-isolated target requirement, the horizontal vibration-isolating unit 40 adopts a laminated natural rubber support or a laminated lead rubber support, and the laminated lead rubber support is provided with a lead rod in the middle of the support, so that the function of dissipating vibration energy can be achieved.

In summary, the embodiment of the present invention provides a vibration isolation device, wherein the vertical vibration isolation unit 20 can effectively reduce the micro-vibration induced by rail transit by using the fixedly arranged rubber layer and the vibration isolation spring, so as to improve the vibration attenuation effect and effectively solve the problem of vibration noise of the upper cover structure of rail transit; the utility model discloses a well board 30 series connection vertical vibration isolation unit 20 and horizontal vibration isolation unit 40 realize the vibration isolation device at the motion decoupling zero of horizontal direction and vertical direction to realize the functional partition of vertical damping and horizontal vibration isolation, satisfy not equidirectional vibration isolation damping functional requirement. The vertical vibration isolation unit 20 and the middle plate 30 are connected in a manner that the supporting columns 32 are inserted into the grooves, so that the connection is more reliable, and the overall performance of the vibration isolation device is exerted.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A vibration isolation apparatus, comprising:

the vibration isolation device comprises an upper connecting plate, a vertical vibration isolation unit, a middle working plate, a horizontal vibration isolation unit and a lower connecting plate which are sequentially arranged from top to bottom;

the vertical vibration isolation unit comprises a box body, and a first rubber layer, a partition plate and a second rubber layer which are sequentially and fixedly connected with one another from top to bottom in the box body, wherein one end of the box body is open, the upper connecting plate covers and is fixed on the opening, and a plurality of vibration isolation springs are uniformly and fixedly arranged on the first rubber layer at intervals.

2. The vibration isolation device according to claim 1, wherein the middle plate comprises a bottom plate and a support column, one end of the support column is arranged on the upper surface of the bottom plate, the bottom of the box body is provided with a first through hole for the support column to pass through, the second rubber layer is provided with a second through hole for the support column to pass through, the lower surface of the partition plate is provided with a groove, the other end of the support column passes through the first through hole and the second through hole and is inserted into the groove, and the upper surface of the bottom plate has a gap with the bottom of the box body.

3. The vibration isolation device according to claim 1, wherein a center axis of one of the plurality of the vibration isolation springs is disposed coaxially with a center axis of the first rubber layer, the other vibration isolation springs of the plurality of the vibration isolation springs are disposed on an outer peripheral side of the center vibration isolation spring, and the other vibration isolation springs of the plurality of the vibration isolation springs are arranged uniformly in a circumferential direction of the first rubber layer.

4. The vibration isolation device according to claim 1, wherein the vibration isolation spring is vulcanized integrally with the first rubber layer.

5. The vibration isolation device according to claim 1, wherein the first rubber layer is vulcanization bonded to both the upper connection plate and the spacer plate; the second rubber layer is vulcanized and bonded with the partition plate and the bottom of the box body.

6. The vibration isolation device according to claim 1, wherein the lower surface of the middle plate is bonded to the horizontal vibration isolation unit by vulcanization.

7. The vibration isolation device according to claim 1, wherein the diameter of the first rubber layer and the diameter of the second rubber layer are smaller than the inner diameter of the tank body, and the diameter of the spacer plate is equal to the inner diameter of the tank body.

8. The vibration isolation device according to claim 1, wherein the upper surface of the partition plate is provided with a plurality of first protrusions, each of the first protrusions corresponds to one of the vibration isolation springs, the first protrusions are provided on the inner peripheral side of the corresponding vibration isolation spring, the outer diameter of the first protrusions is equal to the inner diameter of the corresponding vibration isolation spring, the lower surface of the first rubber layer is provided with a plurality of first grooves matching with the first protrusions, and the first protrusions are inserted into the first grooves.

9. The vibration isolation device according to claim 8, wherein the lower surface of the upper coupling plate is provided with a plurality of second protrusions each corresponding to one of the vibration isolation springs, the second protrusions are provided on the inner circumferential side of the corresponding vibration isolation spring, and the outer diameter of the second protrusions is equal to the inner diameter of the corresponding vibration isolation spring, and the upper surface of the first rubber layer is provided with a plurality of second grooves matching with the second protrusions, and the second protrusions are inserted into the second grooves.

10. The vibration isolation device according to claim 9, wherein the first protrusion has a circular ring shape or a cylindrical shape, and the second protrusion has a circular ring shape or a cylindrical shape.