Multi-limit rolling shock isolation device

Through the combined structure of the rubber layer and slip layer of the multi-pole limit rolling shock isolation device, the problems of insufficient seismic protection of the existing shock isolation device and weak vertical seismic resistance of the friction pendulum shock isolation device are solved, low-cost and efficient shock isolation effect are achieved, and the installation process is simplified.

CN223202527UActive Publication Date: 2025-08-08NORTHWEST UNIVERSITY FOR NATIONALITIES
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Patent Information

Application Number
CN202421764471.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-24
Publication Date
2025-08-08
Estimated Expiration
2034-07-24

AI Technical Summary

Technical Problem

The conventional earthquake protection measures such as binding and bolting used by existing earthquake isolation devices cannot effectively prevent the components from being damaged by environmental vibration. The vertical earthquake resistance of the friction pendulum is weak, the production process is complex and costly, and the upper load is small, and it is difficult to achieve the friction coefficient between the friction pendulum support slider and the friction surface, and it is difficult to adjust after installation.

Method used

The multi-pole limit rolling shock isolation device is adopted to achieve rolling energy consumption under low-level excitation through the combined structure of rubber layer, slip layer and steel ball in the upper and lower concave panels, and the vertical bearing capacity and torsion resistance are enhanced through the rubber layer, combined with bolt hole connections, simplify production and have pull-resistant ability.

Benefits of technology

Effective earthquake isolation under low-level excitation is achieved, the vertical earthquake resistance and torsion resistance of the device are enhanced, the production cost is reduced, and the installation and adjustment process is simplified.

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Abstract

The utility model discloses a multi-limit rolling shock isolation device which comprises an upper concave panel, a lower concave panel is attached to the lower portion of the upper concave panel, and shock isolation devices are arranged in the upper concave panel and the lower concave panel. The utility model relates to the technical field of shock absorption and isolation devices, in particular to a multi-limit rolling shock isolation device, through the matching of an upper rubber layer, a lower rubber layer, an upper sliding layer, a lower sliding layer and a steel ball, the rubber layers and the sliding layers are sequentially laid on the surfaces of an upper concave panel and a lower concave panel, and the multi-limit rolling shock isolation device is easy to manufacture and low in cost; due to the structural characteristics of the steel balls and the concave panels and the assistance of the up-and-down sliding layer, the steel balls can roll in the two concave panels under lower horizontal excitation, and the problems that an existing shock isolation device conventionally adopts anti-seismic protection measures such as binding and bolting, and the conventional method cannot effectively prevent components from being damaged by environmental vibration, so that the service life of the components is prolonged, and the service life of the components is prolonged are solved. The problems that a conventional friction pendulum shock isolation device is poor in vertical shock resistance, complex in manufacturing process and high in cost are solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of vibration isolation devices, in particular to a multi-limit position rolling vibration isolation device. Background Art

[0002] Seismic isolation technology is an effective earthquake-resistant measure. It reduces the impact of earthquake waves on buildings by installing an isolation layer or shock-absorbing device between the foundation, bottom, or lower structure and the upper structure of the building, thereby protecting the safety of the building and personnel.

[0003] The application of seismic isolation technology in my country started relatively late, and the applications were mostly in buildings. However, there has been little research on the seismic isolation of components that are not suitable for large-scale instruments and equipment, cultural relics, etc., which are not suitable for large displacements, and the seismic isolation methods used also have problems.

[0004] Existing seismic isolation devices conventionally use binding, bolting and other seismic protection measures, which have certain seismic resistance capabilities, but for high-precision equipment, such conventional methods cannot effectively protect components from damage caused by environmental vibrations; conventional friction pendulum seismic isolation devices have weak vertical seismic resistance, complex manufacturing processes and high costs; friction pendulum seismic isolation supports are simple and convenient, and have strong horizontal seismic isolation capabilities, but due to the small load on the upper part of the seismic isolation device, it is difficult to achieve the friction coefficient between the friction pendulum support slider and the friction surface, and the device itself is difficult to adjust later after installation. Utility Model Content

[0005] In response to the deficiencies in the prior art, the utility model provides a multi-limit position rolling isolation device, which solves the problem that the conventional anti-seismic protection measures such as binding and bolting adopted in the existing isolation devices cannot effectively protect the components from damage caused by environmental vibrations; it solves the problem that the conventional friction pendulum isolation device has weak vertical seismic resistance, complex manufacturing process and high cost; it compensates for the problem that the upper load of the existing isolation device is small, it is difficult to achieve the friction coefficient between the friction pendulum support slider and the friction surface, and the device itself is difficult to adjust later after installation.

[0006] To achieve the above-mentioned objectives, the utility model is implemented through the following technical solutions: a multi-limit position rolling seismic isolation device, comprising an upper concave panel, a lower concave panel is adhered to the bottom of the upper concave panel, and seismic isolation devices are arranged inside the upper and lower concave panels. The seismic isolation device comprises an upper rubber layer, a lower rubber layer, an upper sliding layer, a lower sliding layer and a steel ball. The top of the outer wall of the upper rubber layer is fixedly connected to the inner wall of the upper concave panel, the bottom of the upper rubber layer is fixedly connected to the upper sliding layer, the bottom of the upper sliding layer is adhered to the sliding layer, the bottom of the sliding layer is fixedly connected to the lower rubber layer, the bottom of the lower rubber layer is fixedly connected to the inner wall of the lower concave panel, and the inner walls of the upper and lower concave panels are respectively adhered with steel balls.

[0007] Preferably, a connecting plate is attached to the top of the upper concave panel, and a clamping plate is fixedly connected to the top of the connecting plate.

[0008] Preferably, threaded holes are respectively provided on the inner wall of the upper concave panel and the inner wall of the connecting plate, screws are threadedly connected to the inner walls of the threaded holes, and grooves are provided on the surfaces of the screws.

[0009] Preferably, a gasket is attached to the top of the connecting plate, the top of the gasket is attached to the outer wall of the screw, and the screw passes through the gasket.

[0010] Preferably, a positioning plate is fixedly connected to the outer wall of the connecting plate, and a side of the bottom of the outer wall of the positioning plate close to the connecting plate is attached to the outer wall of the upper concave panel.

[0011] Beneficial effects

[0012] The utility model provides a multi-limit position rolling isolation device. It has the following beneficial effects: the multi-limit position rolling isolation device, through the cooperation between the rubber layer, the lower rubber layer, the upper sliding layer, the lower sliding layer and the steel ball, realizes that the entire device is composed of upper and lower concave panels, steel balls, rubber layers and sliding layers. The rubber layer and sliding layer are laid on the surface of the upper and lower concave panels in sequence, and bolt holes connected to the upper components are left on the upper concave panel, so that the production is simple and the cost is low. Secondly, due to the structural characteristics of the steel ball and the concave panel, and with the assistance of the upper and lower sliding layers, the steel ball can roll in the two concave panels under low-level excitation, playing the role of energy consumption. Finally, due to the presence of the rubber layer, the device has a certain pull-out resistance and torsional resistance on the basis of improving the vertical bearing capacity of the device, which solves the problem that the conventional anti-seismic protection measures such as binding and bolting adopted in the existing seismic isolation device cannot effectively protect the components from damage caused by environmental vibration; it solves the problem that the conventional friction pendulum seismic isolation device has weak vertical seismic resistance, complex manufacturing process and high cost; it makes up for the problem that the upper load of the existing seismic isolation device is small, it is difficult to reach the friction coefficient between the friction pendulum support slider and the friction surface, and the device itself is difficult to adjust later after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the appearance;

[0015] Figure 3 for Figure 1 Schematic diagram of the structure of the middle and lower concave panel and steel ball;

[0016] Figure 4 for Figure 1 Another structural diagram of ;

[0017] Figure 5 for Figure 4 Schematic diagram of the appearance;

[0018] Figure 6 for Figure 1 Schematic diagram of the structure of the upper concave panel, lower concave panel and lower rubber layer;

[0019] Figure 7 for Figure 4 Schematic diagram of the structure of the middle screw, connecting plate and upper concave panel.

[0020] In the figure: 1. Upper concave panel; 2. Lower concave panel; 3. Lower rubber layer; 4. Upper rubber layer; 5. Lower sliding layer; 6. Upper sliding layer; 7. Steel ball; 8. Connecting plate; 9. Positioning plate; 10. Clamping plate; 11. Screw; 12. Gasket; 13. Threaded hole; 14. Groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Existing seismic isolation devices conventionally use binding, bolting and other seismic protection measures. Such conventional methods cannot effectively protect components from damage caused by environmental vibrations; conventional friction pendulum seismic isolation devices have weak vertical seismic resistance, complex manufacturing processes and high costs; but due to the small load on the isolation device, it is difficult to achieve the friction coefficient between the friction pendulum support slider and the friction surface, and the device itself is difficult to adjust later after installation.

[0023] In view of this, the utility model provides a multi-limit position rolling isolation device, which realizes that the entire device is composed of upper and lower concave panels, steel balls, rubber layers and sliding layers through the cooperation between the rubber layer, the lower rubber layer, the upper sliding layer, the lower sliding layer and the steel balls. The rubber layer and the sliding layer are laid on the surfaces of the upper and lower concave panels in sequence, and bolt holes connected to the upper components are left on the upper concave panel, so that the production is simple and the cost is low. Secondly, due to the structural characteristics of the steel balls and the concave panels, and with the assistance of the upper and lower sliding layers, the steel balls can roll in the two concave panels under low-level excitation, thereby consuming energy. Finally, due to the existence of the rubber layer, the device has a certain pull-out resistance and torsional resistance on the basis of improving the vertical bearing capacity of the device, which solves the problem that the conventional anti-seismic protection measures such as binding and bolting adopted in the existing seismic isolation device cannot effectively protect the components from damage caused by environmental vibration; it solves the problem that the conventional friction pendulum seismic isolation device has weak vertical seismic resistance, complex manufacturing process and high cost; it makes up for the problem that the upper load of the existing seismic isolation device is small, it is difficult to achieve the friction coefficient between the friction pendulum support slider and the friction surface, and the device itself is difficult to adjust later after installation.

[0024] By those skilled in the art, the components in this case are connected in sequence. For the specific connection and operation sequence, reference should be made to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0025] Example 1, by Figure 1-7It can be seen that a multi-limit position rolling isolation device in this case includes an upper concave panel 1, and a lower concave panel 2 is attached to the lower side of the upper concave panel 1. The overall structure is simple and the appearance is a cubic box. The upper concave panel 1 and the lower concave panel 2 have the same structure and are centrally symmetrical. The upper concave panel 1 and the lower concave panel 2 are the same and can simultaneously bond the upper and lower rubber layers and the upper and lower sliding layers. The upper concave panel 1 and the lower concave panel 2 are not sealed on all sides. The upper concave panel 1 and the lower concave panel 2 are provided with an isolation The seismic isolation device includes an upper rubber layer 4, a lower rubber layer 3, an upper sliding layer 6, a lower sliding layer 5 and a steel ball 7. The top of the outer wall of the upper rubber layer 4 is fixedly connected to the inner wall of the upper concave panel 1. The cold vulcanizing agent method is used to achieve the connection between the upper rubber layer 4 and the upper concave panel 1. The method can achieve high-strength bonding between the upper rubber layer 4 and the upper concave panel 1. The bottom of the upper rubber layer 4 is fixedly connected with the upper sliding layer 6. The upper rubber layer 4 is connected to the upper sliding layer 6 by hot vulcanization. The upper rubber layer is subjected to high temperature and high pressure. 4 and the upper sliding layer 6 are vulcanized together to achieve a tight connection. The bottom of the upper sliding layer 6 is attached to the sliding layer 5. The bottom of the sliding layer 5 is fixedly connected to the lower rubber layer 3. The lower rubber layer 3 is connected to the sliding layer 5 by hot vulcanization. The lower rubber layer 3 and the sliding layer 5 are vulcanized together under high temperature and high pressure to achieve a tight connection. The bottom of the lower rubber layer 3 is fixedly connected to the inner wall of the concave panel 2. The cold vulcanizing agent method is used to achieve the connection between the lower rubber layer 3 and the concave panel 2. This method can be achieved The lower rubber layer 3 is now highly bonded to the concave panel 2, and the inner walls of the upper concave panel 1 and the lower concave panel 2 are respectively bonded with steel balls 7. The device combines the structural characteristics of the steel balls 7 and the upper and lower concave panels 1 and 2, and the assistance of the upper sliding layer 6 and the lower sliding layer 5 to achieve rolling energy dissipation under low upper load conditions, playing an effective seismic isolation role. By introducing the upper rubber layer 4 and the lower rubber layer 3, the pull-out and torsion resistance of the entire device are enhanced, so that the device has a certain ability to resist vertical vibration.

[0026] In the specific implementation process, it is worth noting that the overall structure is simple and the appearance is a cubic box. The upper concave panel 1 and the lower concave panel 2 have the same structure and the overall structure is centrally symmetrical. The upper concave panel 1 and the lower concave panel 2 are the same, and the upper and lower rubber layers and the upper and lower sliding layers can be bonded at the same time. The upper concave panel 1 and the lower concave panel 2 are not sealed on all sides. The cold vulcanizing agent method is used to achieve the connection between the upper rubber layer 4 and the upper concave panel 1. This method can achieve high-strength bonding between the upper rubber layer 4 and the upper concave panel 1, and use hot vulcanization to connect the upper rubber layer 4 to the upper sliding layer 6. The upper rubber layer 4 and the upper sliding layer 6 are vulcanized together under high temperature and high pressure to achieve a tight connection. Vulcanization connects the lower rubber layer 3 and the lower sliding layer 5. The lower rubber layer 3 and the lower sliding layer 5 are vulcanized together under high temperature and high pressure to achieve a tight connection. The cold vulcanizing agent method is used to achieve the connection between the lower rubber layer 3 and the lower concave panel 2. This method can achieve high-strength bonding between the lower rubber layer 3 and the lower concave panel 2. The device combines the structural characteristics of the steel ball 7 and the upper and lower concave panels 1 and 2, and the assistance of the upper sliding layer 6 and the lower sliding layer 5 to achieve rolling energy consumption under low upper load conditions, and plays an effective seismic isolation role. By introducing the upper rubber layer 4 and the lower rubber layer 3, the pull-out and torsional resistance of the entire device are enhanced, so that the device has a certain ability to resist vertical vibration.

[0027] Furthermore, a connecting plate 8 is attached to the top of the upper concave panel 1, and a card plate 10 is fixedly connected to the top of the connecting plate 8. The card plate 10 is connected to the external device. The first connection direction is to add a connecting plate 8, and the connecting plate 8 is surrounded by card plates 10. The device and the device are connected as a whole through the card plates 10. The second connection direction uses an electromagnet. This solution is suitable for equipment with iron connections or equipment components that are easy to set iron plates at the bottom of the equipment. Because the upper concave panel 1 of the device is iron, the device and the device can be tightly connected through the electromagnet. The third connection direction is connected by metal glue. This solution is suitable for equipment that is installed once and does not need to be disassembled. Connect the device to the device by gluing;

[0028] In the specific implementation process, it is worth noting that the card plate 10 is connected to the external device. The first connection direction is to add a connecting plate 8. The connecting plate 8 is surrounded by card plates 10, and the device is connected to the device as a whole through the card plates 10. The second connection direction uses an electromagnet connection. This solution is suitable for device components with iron connections or easy to set iron plates at the bottom of the device. Because the upper concave panel 1 of the device is iron, the device and the device can be tightly connected through the electromagnet. The third connection direction is connected by metal glue. This solution is suitable for devices that are installed once and do not need to be disassembled. By connecting the device to the device through gluing, the device as a whole is connected to the external device through three connection methods.

[0029] Furthermore, threaded holes 13 are respectively formed on the inner wall of the upper concave panel 1 and the inner wall of the connecting plate 8. Screws 11 are threadedly connected to the inner walls of the threaded holes 13. A groove 14 is formed on the surface of the screw 11. The staff inserts an external tool into the inside of the groove 14 and rotates the external tool to rotate the screw 11 into the threaded holes 13 inside the connecting plate 8 and the upper concave panel 1, thereby connecting the connecting plate 8 to the upper concave panel 1.

[0030] During the specific implementation process, it is worth noting that the staff inserts the external tool into the inside of the groove 14, and the staff rotates the external tool to rotate the screw 11 into the threaded hole 13 inside the connecting plate 8 and the upper concave panel 1, connecting the connecting plate 8 to the upper concave panel 1, and punching holes around the upper concave panel to reserve the threaded holes 13 to facilitate connection with the connecting plate 8. The function of the gasket 12 is mainly to increase the contact area, reduce pressure, prevent loosening, and protect parts and screws 11;

[0031] Furthermore, a gasket 12 is attached to the top of the connecting plate 8, and the top of the gasket 12 is attached to the outer wall of the screw 11. The screw 11 passes through the gasket 12. When the staff rotates the screw 11, the staff first places the gasket 12 on the position of the threaded hole 13, inserts the screw 11 into the gasket 12, and then rotates the screw 11 into the threaded hole 13 inside the connecting plate 8 and the upper concave panel 1;

[0032] During the specific implementation process, it is worth noting that when the staff rotates the screw 11, the staff first places the washer 12 at the position of the threaded hole 13, inserts the screw 11 into the washer 12, and then rotates the screw 11 into the threaded hole 13 inside the connecting plate 8 and the upper concave panel 1. The function of the washer 12 is mainly to increase the contact area, reduce pressure, prevent loosening, and protect parts and the screw 11;

[0033] Specifically, the overall structure is simple, and the appearance is a cubic box. The upper concave panel 1 and the lower concave panel 2 have the same structure, and the overall structure is centrally symmetrical. The upper concave panel 1 and the lower concave panel 2 are the same, and the upper and lower rubber layers and the upper and lower sliding layers can be bonded at the same time. The upper concave panel 1 and the lower concave panel 2 are not sealed on all sides. The cold vulcanizing agent method is used to achieve the connection between the upper rubber layer 4 and the upper concave panel 1. The method can achieve high-strength bonding between the upper rubber layer 4 and the upper concave panel 1, and the upper rubber layer 4 is connected to the upper sliding layer 6 by hot vulcanization. The upper rubber layer 4 is bonded under high temperature and high pressure. The lower rubber layer 3 and the lower sliding layer 5 are vulcanized together with the upper sliding layer 6 to achieve a tight connection, and the lower rubber layer 3 and the lower sliding layer 5 are vulcanized together under high temperature and high pressure to achieve a tight connection. The cold vulcanizing agent method is used to achieve the connection between the lower rubber layer 3 and the concave panel 2. This method can achieve high-strength bonding between the lower rubber layer 3 and the concave panel 2. The device combines the structural characteristics of the steel ball 7 and the upper and lower concave panels 1 and 2, and the assistance of the upper sliding layer 6 and the sliding layer 5 to achieve rolling energy consumption when the upper load is low, which plays an effective role in isolating The upper rubber layer 4 and the lower rubber layer 3 are introduced to enhance the anti-pulling and anti-torsion capabilities of the entire device, so that the device has a certain ability to resist vertical vibration. When the device as a whole needs to be connected to external equipment, the staff puts the connecting plate 8 on the upper concave panel 1, the staff first puts the gasket 12 on the position of the threaded hole 13, the staff inserts the screw 11 into the gasket 12, the staff inserts the external tool into the inside of the groove 14, and the staff rotates the external tool to rotate the screw 11 into the threaded hole 13 inside the connecting plate 8 and the upper concave panel 1 In the figure, the connecting plate 8 is connected to the upper concave panel 1, and the clamping plate 10 is connected to the external device. The first connection direction is to add a connecting plate 8, and the connecting plate 8 is surrounded by clamping plates 10. The device and the device are connected by the clamping plates 10. The second connection direction uses an electromagnet. This solution is suitable for equipment with a physical connection or equipment components that are easy to install an iron plate at the bottom of the equipment. Because the upper concave panel 1 of the device is iron, the device and the device can be tightly connected by the electromagnet. The third connection direction is to connect with metal glue. This solution is suitable for equipment that is installed once and does not need to be disassembled. The device and the device are connected by gluing.

[0034] Example 2, by Figure 4 and 5 It can be seen that the outer wall of the connecting plate 8 is fixedly connected with the positioning plate 9, and the bottom of the outer wall of the positioning plate 9 close to the side of the connecting plate 8 is in contact with the outer wall of the upper concave panel 1. When the staff puts the connecting plate 8 on the upper concave panel 1, the connecting plate 8 drives the positioning plates 9 around to move, and the positioning plates 9 around are inserted into the upper concave panel 1. The positioning plates 9 around are in contact with the outer walls of the upper concave panel 1.

[0035] During the specific implementation process, it is worth noting that when the staff puts the connecting plate 8 on the upper concave panel 1, the connecting plate 8 drives the positioning plates 9 around it to move, and the positioning plates 9 around it are inserted into the upper concave panel 1. The positioning plates 9 around it are in contact with the outer walls of the upper concave panel 1, thereby realizing the rapid positioning of the connecting plate 8 and the upper concave panel 1;

[0036] Specifically, when the staff places the connecting plate 8 on the upper concave panel 1, the connecting plate 8 drives the surrounding positioning plates 9 to move, and the surrounding positioning plates 9 are inserted into the upper concave panel 1. The surrounding positioning plates 9 contact the surrounding outer walls of the upper concave panel 1, thereby realizing rapid positioning of the connecting plate 8 and the upper concave panel 1.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0038] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-limit position rolling isolation device, comprising an upper concave panel (1), characterized in that: A lower concave panel (2) is attached to the lower side of the upper concave panel (1), and a shock-isolating device is provided inside the upper concave panel (1) and the lower concave panel (2); The seismic isolation device comprises an upper rubber layer (4), a lower rubber layer (3), an upper sliding layer (6), a lower sliding layer (5) and a steel ball (7); The top of the outer wall of the upper rubber layer (4) is fixedly connected to the inner wall of the upper concave panel (1); the bottom of the upper rubber layer (4) is fixedly connected to the upper sliding layer (6); the bottom of the upper sliding layer (6) is adhered to the lower sliding layer (5); the bottom of the sliding layer (5) is fixedly connected to the lower rubber layer (3); the bottom of the lower rubber layer (3) is fixedly connected to the inner wall of the lower concave panel (2); and the inner walls of the upper concave panel (1) and the lower concave panel (2) are adhered to steel balls (7), respectively.

2. The multi-limit rolling isolation device according to claim 1, characterized in that: A connecting plate (8) is attached to the top of the upper concave panel (1), and a clamping plate (10) is fixedly connected to the top of the connecting plate (8).

3. The multi-limit rolling isolation device according to claim 1, characterized in that: The inner wall of the upper concave panel (1) and the inner wall of the connecting plate (8) are respectively provided with threaded holes (13), the inner walls of the threaded holes (13) are threadedly connected with screws (11), and the surface of the screws (11) is provided with grooves (14).

4. The multi-limit rolling isolation device according to claim 3, characterized in that: A gasket (12) is attached to the top of the connecting plate (8), the top of the gasket (12) is attached to the outer wall of the screw (11), and the screw (11) passes through the gasket (12).

5. The multi-limit rolling isolation device according to claim 2, characterized in that: The outer wall of the connecting plate (8) is fixedly connected to a positioning plate (9), and the bottom of the outer wall of the positioning plate (9) close to the side of the connecting plate (8) is in contact with the outer wall of the upper concave panel (1).