Shock insulation device

Abstract

The invention provides a seismic isolation device, and relates to the technical field of seismic isolation protection. The shock isolation device comprises two outer structures which are arranged up and down, each outer structure comprises a main body, two sets of sliding rail assemblies and two first driving parts, and each set of sliding rail assembly comprises two curvature sliding parts which are arranged at intervals in the direction perpendicular to the arrangement direction of the two sets of sliding rail assemblies; the shock insulation mechanism is arranged between the two outer structures and comprises a supporting frame and a shock insulation body. The at least eight groups of rolling assemblies are mounted on the supporting frame, and each curvature sliding part corresponds to at least one group of rolling assemblies capable of rolling; two groups of second driving assemblies, wherein each group of second driving assemblies comprises two second driving parts; and the two sets of semi-inerter energy dissipation assemblies correspond to the two sets of second driving assemblies correspondingly, and each set of semi-inerter energy dissipation assembly comprises two energy absorption and dissipation parts with the opposite driving directions, and the two energy absorption and dissipation parts are used for being matched with the two second driving parts of the same set correspondingly.

Description

Technical Field

[0001] This application relates to the field of seismic isolation and protection technology, and in particular to a seismic isolation device. Background Technology

[0002] Data center equipment and museum artifacts often suffer significant damage during earthquakes. Based on existing research and the "Seismic Resistance Technical Guidelines for Maintaining Normal Building Functionality," earthquakes typically cause light furniture to move and books and utensils to fall; at 0.2g, furniture may move or partially overturn. Since data center equipment and museum artifacts are often of high value, earthquake damage can result in substantial economic and cultural losses. Furthermore, damage to critical data center equipment can disrupt normal urban functions and negatively impact subsequent disaster relief efforts.

[0003] With the improvement of the national economic level, higher requirements are placed on the disaster prevention capabilities of buildings under earthquakes. In order to ensure the normal operation of important urban buildings after a disaster and the safety of important cultural relics, it is necessary to take effective seismic isolation and damping measures to improve urban resilience and ensure the safety of important cultural relics.

[0004] Seismic isolation technology achieves its function by setting a special isolation layer in the vertical arrangement between the isolated structure and its base. The key to this isolation layer is that its horizontal stiffness must be significantly weaker than that of the foundation and superstructure, while possessing stable and controllable deformation capabilities. This allows the horizontal deformation of the entire structure to be concentrated in the isolation layer during an earthquake, thereby reducing the seismic energy input to the area above the isolation layer and significantly lowering the horizontal acceleration of the upper part, thus protecting the isolated structure. Applications of seismic isolation technology in the building field mainly include rubber seismic isolation bearings and friction pendulum seismic isolation bearings.

[0005] Currently, there are some vibration reduction and isolation applications for data center cabinets / cultural relics. Classified by their isolation mechanism, these include isolation devices using linear slide rails, isolation devices using a combination of spherical seats and spherical block components, and isolation devices using a combination of slope-plane-slope panels and long rollers. However, current isolation devices have contradictions in terms of reset performance, isolation efficiency, and energy dissipation capacity, and cannot meet the isolation requirements for data center equipment and important cultural relics. Summary of the Invention

[0006] The purpose of this application is to provide a seismic isolation device to solve the technical problem that current seismic isolation devices have a difficult-to-balance contradiction in terms of reset performance, seismic isolation efficiency and energy dissipation capacity, and cannot meet the seismic isolation requirements of data center equipment, important cultural relics and the like.

[0007] To address the aforementioned technical problems, this application provides the following technical solutions:

[0008] This application provides a vibration isolation device, which includes two external structures arranged vertically. Each external structure includes a main body, two sets of slide rail assemblies spaced apart on the first surface of the main body, and two first driving parts located between the two sets of slide rail assemblies. Each set of slide rail assemblies includes two curvature sliding parts spaced apart along a direction perpendicular to the arrangement of the two sets of slide rail assemblies. The rail surface of the curvature sliding parts is a continuous and smooth concave surface. The two external structures are orthogonally arranged along a first direction and a second direction, and their first surfaces are opposite to each other.

[0009] A seismic isolation mechanism, arranged between the two external structures, includes:

[0010] Supporting framework;

[0011] At least eight sets of rolling components are installed on the support frame, and each of the curvature sliding parts corresponds to at least one set of rolling components that can roll, so that the two external structures can be relatively displaced relative to the vibration isolation components in the first direction and the second direction under the action of external force, and return to the initial position after the external force is removed;

[0012] Two sets of second drive components, respectively corresponding to the two external structures, each set of second drive components includes two second drive parts, and the four second drive parts correspond one-to-one with and cooperate with the four first drive parts on the two external structures;

[0013] Two sets of semi-inertial capacity energy dissipation components are respectively corresponding to the two sets of second drive components. Each set of semi-inertial capacity energy dissipation components includes two energy-absorbing and dissipating components with opposite driving directions, which are used to cooperate with the two second drive units in the same set respectively.

[0014] When the external structure generates a displacement increment relative to the vibration isolation mechanism in one of the positive or negative directions of the first or second direction, and the movement speed of the first drive unit is greater than the movement speed of the second drive unit, the corresponding second drive component drives the semi-inertial capacity energy dissipation component. In the semi-inertial capacity energy dissipation component, only the energy-absorbing and dissipating component with the same driving direction as the displacement increment direction is driven to absorb and dissipate part of the energy from the external structure.

[0015] In some modified embodiments of this application, the first surface of the main body is provided with anti-tipping plates on the outer sides of the two sets of slide rail assemblies facing away from each other. The anti-tipping plates are perpendicular to the first surface and are provided with curvature channels that correspond to and are adapted to the curvature of the adjacent curvature sliding part.

[0016] The side portion of the support frame is provided with anti-tipping sub-parts that are movably inserted through the curvature channels of each anti-tipping plate. The anti-tipping sub-parts can only generate relative movement in the curvature channels along the extension direction of the curvature channels.

[0017] In some modified embodiments of this application, the first drive unit includes a drive rack, which is arranged parallel to the slide rail assembly;

[0018] The second drive unit includes a drive gear, which is rotatably mounted on the support frame and is connected to the energy-absorbing component in a transmission manner. The drive gear meshes with the corresponding drive rack.

[0019] In some modified embodiments of this application, at least within the stroke during which the external structure and the vibration isolation component can generate relative displacement, the drive gear and the drive rack are always in contact and maintain a meshing relationship.

[0020] In some modified embodiments of this application, the support framework includes:

[0021] A rectangular outer frame, wherein the extension direction of the first frame beam forming the rectangular outer frame includes the first direction and the second direction, and each frame beam is respectively equipped with at least one set of the rolling components;

[0022] The inner frame is rectangular, and the splicing point of the second frame beam forming the inner frame is located on the inner side of the corresponding first frame beam. The four energy-absorbing components are respectively installed on the four second frame beams.

[0023] In some modified embodiments of this application, the second frame beam has a mounting cavity for mounting the energy-absorbing component, and the drive gear is located outside the mounting cavity;

[0024] The energy-absorbing and dissipating component includes:

[0025] A shaft is rotatably connected to the mounting cavity, and the drive gear is coaxially fixed to the shaft.

[0026] A unidirectional rotating component has an inner ring and an outer ring. The inner ring is fixedly connected to the axle of the drive gear, and the outer ring is coaxial with and fixedly connected to one end of the shaft, so that when the unidirectional rotating component is in the locked direction, the drive gear can drive the shaft to rotate synchronously.

[0027] A rotating mass block is coaxially fixed to the shaft.

[0028] A friction element is coaxially and rotatably connected to the shaft, and the outer side of the friction element is fixedly connected to the second frame beam;

[0029] When the energy-absorbing component is driven, the rotating mass block rotates under the drive of the shaft to absorb part of the energy from the external structure, and the friction element generates friction to dissipate the energy.

[0030] In some modified embodiments of this application, the energy-absorbing component further includes:

[0031] The first rotating normal connector is coaxially fitted onto the shaft body. The first rotating normal connector is disposed between the rotating mass block and the inner wall of the mounting cavity, and is in contact with the end face of the rotating mass block.

[0032] The second rotary normal connector is coaxially fitted onto the shaft body, and the second rotary normal connector is located between the end of the shaft body extending to the outside of the mounting cavity and the outer wall of the second frame beam.

[0033] In some modified embodiments of this application, the scrolling component includes at least one scroll member, the scroll member comprising:

[0034] Wheel frame, fixed to the support frame;

[0035] A rolling wheel is rotatably mounted on the wheel frame via a bearing. The rolling wheel is supported on the rail surface of the curved sliding part and can roll arbitrarily in both directions on the rail surface.

[0036] In some modified embodiments of this application, the curvature sliding part includes two parallel curvature slide rails;

[0037] The rolling assembly includes two rolling elements, and the rolling wheels of the two rolling elements are respectively supported on one of the curvature slide rails;

[0038] Among them, a limiting ring is provided on the outer periphery of one end face of the rolling element, and the limiting ring is in contact with the side of the curvature slide rail. The limiting rings of the two rolling elements in the same group are located on the side that is close to each other or on the side that is far away from each other.

[0039] In some modified embodiments of this application, the two ends of the curvature sliding part are respectively provided with limiting protrusions higher than the rail surface.

[0040] Compared to existing technologies, the seismic isolation device provided in this application has two external structures connected to the floor and the isolated object, respectively. The two external structures are orthogonally arranged and cooperate with the seismic isolation mechanism to achieve horizontal earthquake isolation in any direction. Through the cooperation of the curvature slide rails of the external structures and the rolling components of the seismic isolation mechanism, the external structures and the seismic isolation device can undergo relative displacement in the positive and negative directions of the first and second directions under external force. After the external force is removed, they have the ability to self-reset to their initial positions. Furthermore, through the cooperation of the first driving part of the external structure and the second driving component of the seismic isolation mechanism, and the linkage between the second driving component of the seismic isolation mechanism and the semi-inertial capacitive component, when the external structure and the seismic isolation mechanism experience a displacement increment in either the positive or negative direction of the first or second direction, only the corresponding energy-absorbing component is driven, transferring a portion of the energy from the external structure to the energy-absorbing component during this process. This energy is then dissipated through the energy-absorbing component. Therefore, the seismic isolation device possesses high seismic isolation efficiency, good reset capability, and energy dissipation capability. Attached Figure Description

[0041] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0042] Figure 1 A schematic diagram of the structure of the vibration isolation device provided in an embodiment of the present invention is shown.

[0043] Figure 2 A schematic top view of the vibration isolation device provided in an embodiment of the present invention is shown.

[0044] Figure 3 A schematic diagram of the front view structure of the vibration isolation device provided in an embodiment of the present invention is shown.

[0045] Figure 4 A schematic diagram illustrating the disassembled structure of the vibration isolation device provided in an embodiment of the present invention is shown.

[0046] Figure 5 A schematic diagram of the structure of the vibration isolation mechanism of the vibration isolation device provided in the embodiment of the present invention is shown.

[0047] Figure 6 A schematic diagram of the disassembled structure of the energy-absorbing component of the vibration isolation device provided in an embodiment of the present invention is shown.

[0048] Figure 7 The diagram schematically illustrates the structure of the first and second rotary normal connectors of the energy-absorbing component of the vibration isolation device provided in an embodiment of the present invention.

[0049] Explanation of icon numbers:

[0050] 1. External structure 1; 11. Main body; 11a. First surface; 111. Planar frame; 112. Thin steel plate; 12. Slide rail assembly; 121. Curvature sliding part; 121a. Rail surface; 1211. Limiting protrusion; 13. Drive rack; 14. Anti-tipping plate; 141. Curvature channel;

[0051] 2. Vibration isolation mechanism; 21. Support frame; 211. Rectangular outer frame; 212. Rectangular inner frame; 2121. Mounting cavity; 22. Rolling assembly; 221. Rolling wheel; 2211. Limiting ring; 23. Drive gear; 24. Energy absorption and dissipation component; 241. Shaft; 242. Unidirectional rotating component; 243. Rotating mass block; 244. Friction component; 245. First rotational normal connecting component; 246. Second rotational normal connecting component; 25. Anti-overturning sub-unit; 251. Sub-unit seat; 252. Limiting screw;

[0052] a) First direction; b) Second direction. Detailed Implementation

[0053] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0054] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0055] Seismic isolation technology achieves its function by setting a special isolation layer in the vertical arrangement between the isolated object and its base. The key to this isolation layer is that its horizontal stiffness must be significantly weaker than that of its underlying foundation and superstructure, while possessing stable and controllable deformation capabilities. This allows the vertical deformation of the entire structure to be concentrated in the isolation layer when seismic forces are applied, thereby reducing the seismic energy input above the isolation layer and significantly lowering the horizontal acceleration of the upper part of the isolation layer, thus protecting the isolated object. Currently, seismic isolation applications for data center cabinets / cultural relics can be classified according to their isolation mechanism as follows:

[0056] The first approach is to use linear guide rail type vibration isolation equipment. The finished linear guide rail has low friction, which can achieve a good vibration isolation effect. However, the linear guide rail itself does not have a reset capability and needs to be combined with a spring to give the vibration isolation equipment a reset capability. However, the problem with introducing a spring is that a spring is a reset element in which force and displacement are linearly related. When the displacement of the vibration isolation equipment is small, the spring force is very small, that is, the reset force is very small, and the reset effect is poor. When the vibration isolation equipment is subjected to a large displacement, the spring force will be large, which will make the vibration isolation efficiency of the vibration isolation equipment worse under large displacement.

[0057] Secondly, a vibration isolation device combining spherical seats and spherical block components is used. Four spherical seats serve as the base, while the spherical surfaces of the four spherical block components are in contact with the spherical seats. When an external excitation occurs, the spherical surfaces of the spherical block components slide along the spherical surfaces of the spherical seats, while the upper surface of the spherical block components remains parallel to the lower surface of the spherical seats. When the external excitation is removed, the spherical block components slide towards the lowest point of the spherical surface under the action of gravity. When the spherical block is a complete sphere, the support has excellent vibration isolation and reset performance, but it lacks energy dissipation capacity. Under external excitation, it may experience large displacements, potentially exceeding the range of the spherical seat. This could cause the vibration isolation to fail upon contact with the boundary, affecting the upper structure being isolated. Furthermore, the small contact area between the sphere and the track limits its application in large cabinets. Additionally, it does not constrain relative torsion between the upper and lower parts of the vibration isolation device, which could adversely affect the upper cabinet. When the spherical block is not a complete sphere, friction materials are typically used on the contact surface between the spherical block assembly and the spherical seat. In such cases, the reset capability is often insufficient, and the residual displacement is often large when the external excitation disappears. Similar structures using spherical tracks and friction rollers also suffer from the aforementioned problems.

[0058] Another type of vibration isolation device uses a combination of a slope-plane-slope panel and a long roller. The roller initially contacts the planar track of the slope-plane-slope panel. When external excitation is applied, the roller rolls on the slope. When the external excitation is removed, the roller rolls back onto the planar section of the slope-plane-slope panel under gravity, thus forming a reset mechanism. This type of support, due to its use of a broken plane, experiences a momentary change in vertical acceleration when the roller rolls at the plane-slope interface, which can negatively impact the protection of equipment or artifacts within the cabinet.

[0059] Example

[0060] Reference Appendix Figure 1 -Appendix Figure 7To address the inherent contradictions in current seismic isolation devices regarding reset performance, isolation efficiency, and energy dissipation, which prevent them from meeting the seismic isolation requirements for data center equipment and important cultural relics, Embodiment 1 of this invention proposes a seismic isolation device. This device comprises two external structures 1 arranged vertically. Each external structure 1 includes a main body 11, two sets of slide rail assemblies 12 spaced apart on the first surface 11a of the main body 11, and two first driving units located between the two sets of slide rail assemblies 12. Each set of slide rail assemblies 12 includes two... Curvature sliding portions 121 are spaced apart along the arrangement direction perpendicular to the two sets of slide rail assemblies 12. The rail surface 121a of the curvature sliding portion 121 is a continuous and smooth concave surface. The two outer structures 1 are orthogonally arranged along the first direction a and the second direction b, and their first surfaces 11a are opposite to each other. The vibration isolation mechanism 2 is arranged between the two outer structures 1 and includes: a support frame 21; at least eight sets of rolling assemblies 22, which are installed on the support frame 21, and each curvature sliding portion corresponds to at least one set of rolling assemblies that can roll, so that the two outer structures... Structure 1 can undergo relative displacement with respect to the vibration isolation component in the first direction a and the second direction b under the action of external force, and reset to the initial position after the external force is removed; two sets of second driving components, respectively corresponding to the two external structures 1, each set of second driving components includes a second driving part corresponding to the two first driving parts, the four second driving parts correspond one-to-one with the first driving parts on the two external structures 1 and cooperate with each other; and two sets of semi-inertial capacity energy dissipation components, respectively corresponding to the two sets of second driving components, each set of semi-inertial capacity energy dissipation components includes two energy absorption and dissipation parts 24 with opposite driving directions, used to cooperate with the two second driving parts in the same set; when the external structure 1 generates a displacement increment relative to the vibration isolation mechanism 2 in one of the positive or negative directions of the first direction a or the second direction b, and the movement speed of the first driving part is greater than the movement speed of the second driving part, the corresponding second driving component drives the semi-inertial capacity energy dissipation component, only the semi-inertial capacity energy dissipation component with the same driving direction as the displacement increment direction is driven, so as to absorb and dissipate part of the energy from the external structure 1.

[0061] Specifically, the main body 11 of the seismic isolation device provided in this embodiment includes two external structures 1 arranged vertically and an isolation mechanism 2 installed between the two external structures 1. The lower external structure 1 can be fixed to the floor, and the upper external structure 1 can be connected to the object to be isolated. The object to be isolated can be, but is not limited to, cultural relics, data center equipment, etc. The two external structures 1 are orthogonally arranged and cooperate with the isolation mechanism 2 to achieve isolation of horizontal earthquakes in any direction. Through the cooperation of the slide rail assembly 12 of the external structure 1 and the rolling assembly 22 of the isolation mechanism 2, the external structure 1 and the isolation device can undergo relative displacement in the positive and negative directions of the first direction a and the second direction b under the action of external force. After the external force is removed, it has the ability to reset itself to the initial position. Moreover, through the cooperation between the first driving part of the outer structure 1 and the second driving component of the vibration isolation mechanism 2, and the linkage between the second driving component of the vibration isolation mechanism 2 and the semi-capacitive component, when the outer structure 1 and the vibration isolation mechanism 2 generate a displacement increment in one of the positive or negative directions of the first direction a or the second direction b, only the corresponding energy-absorbing component 24 is driven, and part of the energy of the outer structure 1 is transferred to the energy-absorbing component 24 during the process. Finally, the energy can be dissipated through the energy-absorbing component 24. Therefore, the vibration isolation device provided in this embodiment has both high vibration isolation efficiency, good reset capability and energy dissipation capability.

[0062] Reference Appendix Figure 1 -Appendix Figure 4The outer structure 1 includes: a main body 11, two sets of slide rail assemblies 12 and two first drive units. The main body 11 is used to fix the various components of the external structure 1 and to connect the floor or the object to be isolated. The main body 11 can be made of square steel pipe, rectangular steel pipe and thin steel plate 112. Specifically, it can be formed by combining and overlapping steel pipes to form a planar frame 111, and at least part of the planar frame 111 is covered with thin steel plate 112. The shape and size of the main body 11 can be set according to the needs of the object to be isolated to improve the applicability of the vibration isolation device. The side of the planar frame 111 away from the thin steel plate 112 forms a first surface 11a, which can be used to fix the slide rail assembly 12, the first drive part, etc. The thin steel plate 112 can be used to connect the floor or the object to be isolated. The parts of the planar frame 111 used to fix the slide rail assembly 12 and the first drive part can be respectively provided with steel pipes. In addition, the main body 11 can form a modular structure, that is, the connection conditions can be reserved as needed, so that the external structure 1 can be used as a unit to combine and splice as needed to adapt to the object to be isolated of different sizes and shapes, thereby improving the applicability of the vibration isolation device. Two sets of slide rail assemblies 12 are respectively provided on each outer structure 1. The two sets of slide rail assemblies 12 are arranged on both sides of the first surface 11a perpendicular to its extension direction and close to the edge. Each set of slide rail assemblies 12 includes two curved sliding parts 121 spaced apart along the arrangement direction perpendicular to the two sets of slide rail assemblies 12. The rail surface 121a on the curved sliding part 121 that is used to contact the rolling assembly 22 is set as a continuous and smooth concave surface. The curved sliding part 121 can be formed by milling steel, stainless steel or aluminum alloy, or it can also be made of plastic. The two first drive parts are located between the two sets of slide rail assemblies 12 and are used to cooperate with the second drive assembly of the vibration isolation mechanism 2 to drive the semi-inertial energy dissipation component.

[0063] In this arrangement, the first surfaces 11a of the two outer structures 1 face each other and are orthogonally arranged along the first direction a. That is, the curvature sliding part 121 of one outer structure 1 extends along the first direction a, and the curvature sliding part 121 of the other outer structure 1 extends along the second direction b. Under the action of external force, the two outer structures 1 can undergo relative displacement with the vibration isolation mechanism 2 in the positive and negative directions of the first direction a.

[0064] Reference Appendix Figure 4 -Appendix Figure 6The seismic isolation mechanism 2 includes: a support frame 21 and at least eight sets of rolling components 22, two sets of second drive components, and two sets of semi-inertial capacity energy dissipation components installed on the support frame 21. The support frame 21 is the main frame of the seismic isolation mechanism 2 and can be formed by overlapping square or rectangular steel tubes. Each curvature slide rail of the outer structure 1 corresponds to at least one set of rolling components 22, and the rolling components 22 can roll along the extension direction of the curvature slide rail on the rail surface 121a of the curvature sliding part 121. Each first drive part corresponds to a set of second drive components, and the transmission between the two can be that the linear motion of the first drive part with the outer structure 1 is converted into the rotational motion of the second drive component, and the second drive part drives the corresponding energy dissipation component 24 to realize the transfer of seismic input energy to the seismic isolation mechanism 2. Two sets of semi-inertial capacitive energy dissipation components correspond one-to-one with two sets of second drive components and cooperate with each other. They correspond to the two directions of relative displacement between the outer structure 1 and the vibration isolation mechanism 2, namely the first direction a and the second direction b. Each set of semi-inertial capacitive energy dissipation components includes two energy-absorbing and dissipating parts 24 with opposite driving directions, which cooperate with the two second drive parts in the same set and correspond to the positive or negative directions of the first direction a / second direction b, respectively. When the outer structure 1 generates a displacement increment relative to the vibration isolation mechanism 2 in one of the positive or negative directions of the first direction a or the second direction b, and the speed of the first drive part is greater than the speed of the second drive part, the corresponding second drive component can drive the corresponding semi-inertial capacitive energy dissipation component. Only the drive direction of the semi-inertial capacitive energy dissipation component in the set is driven, so that a part of the kinetic energy of the relative movement can be converted into the energy of the energy-absorbing and dissipating part 24, and the energy can be dissipated by the movement of the energy-absorbing and dissipating component itself. When the outer structure 1 moves relative to the vibration isolation mechanism 2 in the opposite direction, the cooperation of the first drive component and the second drive component cannot drive the semi-inertial capacitive energy dissipation component.

[0065] Among them, the energy-absorbing component 24 can absorb energy by, but is not limited to, converting the kinetic energy of relative motion into its own rotational inertial energy, and the energy can be mainly dissipated through friction.

[0066] Further, see attached document. Figure 1 -Appendix Figure 6In order to realize the transmission between the first drive unit and the second drive unit, in a specific implementation, the first drive unit and the second drive unit can adopt a gear and rack transmission form. Specifically, the first drive unit includes a drive rack 13, which is a straight tooth and arranged parallel to the curvature sliding part 121. It can be made of steel, stainless steel, aluminum alloy or nylon, etc. Correspondingly, the second drive unit includes a drive gear 23, which is rotatably mounted on the support frame 21 and is connected to the energy absorption and dissipation component 24. The drive gear 23 can be made of the same material as the drive rack 13 and have the same module so that the two can mesh and transmit power.

[0067] Among them, reference appendix Figure 5 The first drive units corresponding to the two outer structures 1 are arranged vertically at intervals, and the arrangement of the drive gears 23 is adapted to the position and height of the corresponding drive racks 13. Each outer structure 1 is provided with two drive racks 13, which correspond to the two positive and negative directions of relative movement between the outer structure 1 and the vibration isolation mechanism 2, respectively. The drive racks 13 should have a suitable thickness. The maximum thickness should ensure that the outer structure 1 and the vibration isolation mechanism 2 do not contact the support frame 21 when they move relative to each other. The minimum thickness should ensure that at the maximum stroke of the relative movement between the outer structure 1 and the vibration isolation mechanism 2, when the outer structure 1 and the vibration isolation mechanism 2 experience vertical misalignment due to the curvature sliding part 121, the drive racks 13 and the drive gears 23 can always maintain a necessary and reasonable contact area to ensure a reliable transmission relationship between the drive racks 13 and the drive gears 23.

[0068] For details, please refer to the appendix. Figure 4 and attached Figure 5 The support frame 21 may include two parts: a rectangular outer frame 211 and a rectangular inner frame 212. The rectangular outer frame 211 is used to install the rolling components 22. The four first frame beams of the rectangular outer frame 211 can be made of four rectangular tubes. The arrangement direction of each first frame beam is parallel to the extension direction of the corresponding curvature sliding part 121. At least one set of rolling components 22 is installed on each first frame beam. Through holes can be opened in the first frame beams to install the rolling components 22. The four second frame beams of the rectangular inner frame 212 can also be made of four rectangular tubes. The rectangular tubes can be spliced ​​together by welding or angle bracket bolts to form the rectangular inner frame 212. The splicing position is located inside the corresponding first frame beam. It can also be further set at the middle position inside the first frame beam, that is, the second frame beam and the corresponding first frame beam can form a 45-degree angle. The rectangular inner frame 212 and the rectangular outer frame 211 can be fixed by welding. The four energy-absorbing components 24 are respectively installed on the four second frame beams.

[0069] Among them, reference appendix Figure 4 and attached Figure 7The first frame beam can be provided with an installation cavity 2121 to install the energy-absorbing component 24. Taking the first frame beam as an example, a portion of the opposite sidewall of the tube can be cut off in the middle part of the rectangular tube to form the installation cavity 2121.

[0070] Further, see attached document. Figure 4 -Appendix Figure 7 The energy-absorbing component 24 mainly includes: a shaft 241, a one-way rotating component 242, a rotating mass block 243, and a friction component 244. The shaft 241 is arranged perpendicular to the first direction a and the second direction b, and is rotatably installed in the mounting cavity 2121 of the first frame beam. Specifically, a circular hole can be opened on the upper wall corresponding to the cut-off portion of the rectangular tube for connecting the shaft 241. The one-way rotating component 242 has an inner ring and an outer ring, which can rotate in one direction, but cannot rotate in the opposite direction. The inner ring is fixedly connected to the axle of the drive gear 23, and the outer ring is coaxially connected to one end of the shaft 241 and fixed relative to the shaft 241. The one-way rotating component 242 can adopt a ratchet structure or use a pre-made one-way bearing. This design allows the one-way rotating component to be in the locked position. The drive gear 23 can drive the shaft 241 to rotate synchronously; the rotating mass block 243 can be set as a flat cylindrical component, with a hole in the middle through which the shaft 241 can pass and a thread for fixed connection with the shaft 241, so that the rotating mass block 243 is fixedly connected to the shaft 241; the friction plate can be obtained by cutting a part of the solid of a disc and opening a hole in the center. The hole in the center is adapted to the shaft 241 for passing through the shaft 241, but is not fixed to the shaft 241. After passing through the cut part of the solid, the friction plate can be fixed to the inner wall of the mounting cavity 2121, so that the friction plate does not rotate around the shaft 241 relative to the second frame beam. The friction plate can be made of ceramic composite material or metal composite material.

[0071] Further, see attached document. Figure 7The energy-absorbing component 24 further includes: a first rotating normal connector 245 and a second rotating normal connector 246. The first rotating normal connector 245 and the second rotating normal connector 246 have the same structure. For example, they can be thrust bearings or thrust ball bearings. When placed on a plane, several small rollers contact the plane and can rotate on the plane with relatively low friction. The first rotating normal connector 245 is coaxially fitted onto the shaft 241. The first rotating normal connector 245 is disposed between the rotating mass block 243 and the inner wall of the mounting cavity 2121, and contacts the end face of the rotating mass block 243. The second rotating normal connector 246... The coaxial assembly is fitted onto the shaft 241. The second rotational normal connector 246 is located between the end of the shaft 241 extending to the outside of the mounting cavity 2121 and the outer wall of the second frame beam. The retainer of the second rotational normal connector 246 is fixed to the shaft 241. The roller shaft contacts the outer wall of the rectangular tube. The rotating mass block 243 has a certain gravity, which will generate a certain axial pressure through the shaft 241. The arrangement of the first rotational normal connector 245 and the second rotational normal connector 246 can bear the load along the axis direction, i.e., the axial pressure, and enable the shaft 241 to rotate smoothly under this load.

[0072] When subjected to an earthquake, the seismic isolation mechanism 2 and the outer structure 1 move relative to each other. The rolling component 22 slides along the curvature sliding part 121 in a certain direction, and the driving rack 13 drives the semi-inertial capacity energy dissipation component in the corresponding direction of motion to start working. Taking the relative motion between the external structure 1 and the vibration isolation mechanism 2 along the positive direction of the first direction a as an example, the relative motion generates a relative velocity V. The pitch circle radius of the drive gear 23 is R, and the angular velocities of the two drive gears 23 in the first direction a are V / R respectively. In this case, the unidirectional rotating member 242, which is opposite to the negative direction of the first direction a, is in the direction of motion, that is, the drive gear 23 in the negative direction of the first direction a cannot drive the corresponding energy-absorbing component 24. For ease of description, this energy-absorbing component 24 is called the second energy-absorbing component. The unidirectional rotating member 242, which is opposite to the positive direction of the first direction a, is in the locking direction, and the drive gear 23 in the positive direction of the first direction a can drive the corresponding energy-absorbing component 24. For ease of description, this energy-absorbing component 24 is called the first energy-absorbing component. The angular velocities of the shaft 241 and the rotating mass block 243 of the first energy-absorbing component are both V / R. Assume that the density of the rotating mass block 243 is ρ and its edge radius is R. m If the thickness is t and the radius of shaft 241 is r, then the moment of inertia of the rotating mass block 243 is... The mass of the rotating mass block 243 is If expressed in terms of mass, the moment of inertia should be: The first energy-absorbing component only considers the energy absorbed by the rotating mass block 243. The energy of the first energy-absorbing component will gradually dissipate due to the friction of the first rotating normal connector 245, the second rotating normal connector 246, and the friction plate. The energy already transferred to the first energy-absorbing component will no longer affect the relative motion between the seismic isolation mechanism 2 and the external structure 1 under seismic excitation. If the velocity V continues to increase in the same direction, the energy absorbed by the first energy-absorbing component will increase to the energy calculated based on the new velocity V.

[0073] Due to the characteristics of the unidirectional rotating component 242, when the speed V no longer increases or decreases, the rotating mass block 243 no longer receives externally transferred energy. That is, the direction of motion of the outer structure 1 and the vibration isolation mechanism 2 remains unchanged. However, as long as the speed V no longer increases, the system cannot transfer kinetic energy to the first energy-absorbing component.

[0074] When the direction of motion of the outer structure 1 and the vibration isolation mechanism 2 changes, the relative velocity V in the negative direction along the first direction a increases. That is, the second energy-absorbing component will be activated at this time. When the relative velocity V is less than the linear velocity ωR of the second energy-absorbing component, which is converted from the angular velocity and the pitch circle radius of the drive gear 23, energy will be input to the second energy-absorbing component. If the instantaneous relative velocity V is less than ωR, due to the characteristics of the unidirectional rotating component 242, no energy will be input to the second energy-absorbing component.

[0075] When the seismic action ceases to generate excitation, due to the weight of itself and the upper seismically isolated object, the rolling component 22 will slide along the curvature sliding part 121 toward the center position of the curvature sliding part 121 (i.e., the lowest point of the curvature sliding part 121), thereby completing the automatic reset of the seismic isolation device.

[0076] Furthermore, when a large relative displacement occurs between the outer structure 1 and the seismic isolation mechanism 2, there are two possible overturning modes. The first is that the overturning tendency occurs around the axis perpendicular to the curvature sliding part 121, that is, the two sets of rolling components 22 on the side with the larger relative displacement are on the curvature sliding part 121, while the two sets of rolling components 22 on the other side are disengaged from the curvature sliding part 121. The second is that the overturning tendency occurs around the axis in the track direction. In this case, the two sets of rolling components 22 in one row are in contact with the curvature sliding part 121, while the two sets of rolling components 22 in the other row are disengaged from the curvature sliding part 121.

[0077] For details, please refer to the appendix. Figure 1 -Appendix Figure 5To prevent the outer structure 1 and the isolation mechanism 2 from overturning during relative motion, the present invention employs a technical solution in which two anti-overturning plates 14 are provided on the first surface 11a of the main body 11. These two anti-overturning plates 14 are located on the opposite outer sides of two curvature sliding portions 121 on the same surface. The anti-overturning plates 14 can be flat plates and are arranged perpendicular to the first surface 11a. Curvature channels 141 with the same curvature and substantially the same extension length are provided on the anti-overturning plates 14. Anti-overturning sub-parts 25 are respectively provided on the side of the support frame 21. Each anti-overturning sub-part 25 is movably inserted into the curvature channel 141 of the corresponding anti-overturning plate 14. The center line of the curvature channel 141 is consistent with the center line of the movement of the anti-overturning sub-part 25 along the curvature sliding part 121 on the isolation mechanism 2. Through the adaptation of the two, during the relative movement of the outer structure 1 relative to the isolation mechanism 2, the anti-overturning sub-part 25 can only generate relative movement along the extension direction of the curvature track and does not come into contact with the anti-overturning plate 14. When the first overturning mode occurs, the anti-overturning sub-part 25 contacts the side wall of the curvature channel 141, inhibiting its continued sliding and stopping the overturning tendency; when the second overturning mode occurs, the anti-overturning sub-part 25 abuts against the side of the anti-overturning plate 14, which can also stop the overturning tendency.

[0078] The anti-overturning plate 14 can be a thin plate structure, and its material can be, but is not limited to, steel, aluminum alloy, or other materials with similar strength. Several bolt holes can be opened on the anti-overturning plate 14, and bolts can be connected through the bolt holes to the curved slide rail or the corresponding bolt holes on the main body 11 for fixing the anti-overturning plate 14. The anti-overturning sub-part 25 can specifically include: sub-part seat 251 and limiting screw 252. The sub-part seat 251 is fixed to the outside of the support frame 21, and the limiting screw 252 is connected to the sub-part seat 251 and passes through the curvature channel 141. When the vibration isolation device is working normally and does not have an overturning tendency, the anti-overturning sub-part 25 and the anti-overturning plate 14 do not interact. However, when the vibration isolation device has an overturning tendency, the limiting screw 252 comes into contact with the anti-overturning plate 14 to stop the overturning of the vibration isolation device.

[0079] Further, refer to the attached figures and appendices. Figure 5 To further prevent overturning in the first type of overturning mode, in a specific implementation, limiting protrusions 1211 higher than the rail surface 121a can be provided at both ends of the extension direction of the curvature sliding part 121. The limiting protrusions 1211 and the rail surface 121a of the curved slide rail are not smoothly connected, so that when the rolling component 22 rolls to the end of the curvature sliding part 121 and has the tendency to continue sliding, it will create resistance and prevent the overturning of the vibration isolation device.

[0080] Further, see attached document. Figure 4In a specific implementation, the rolling assembly 22 includes at least one rolling element, which includes a wheel frame and a rolling wheel 221. The wheel frame is completely fixed to the support frame 21. The rolling wheel 221 is rotatably mounted on the wheel frame through a bearing so that the rolling wheel 221 can rotate with low friction relative to the support frame 21. The rolling wheel 221 is supported on the rail surface 121a of the curvature sliding part 121 and can roll arbitrarily in both directions on the rail surface 121a.

[0081] Specifically, in order to improve the load-bearing capacity of the device, refer to the appendix. Figure 4 In the technical solution adopted by the present invention, the rolling component 22 can be arranged with double-sided bearing wheels, and the curvature sliding part 121 is set as a double slide rail mode. Specifically, the rolling component 22 includes two rolling elements, and the curvature sliding part 121 includes two parallel curvature slide rails. The distance between the two curvature slide rails is set according to the distance between the two rolling elements of the rolling component 22, so that the two rolling elements of the rolling component 22 can be supported on one curvature slide rail respectively.

[0082] Among them, reference appendix Figure 3 and attached Figure 4 To improve the stability of the device during movement, a limiting ring 2211 can be provided on the outer periphery of one end face of each rolling element. The limiting ring 2211 contacts the side of the curvature slide rail. The limiting rings 2211 of the two rolling elements in the same group are located on the side that is close to each other or on the side that is far away from each other, so as to prevent the rolling element from slipping off the curvature slide rail along its axial direction.

[0083] When assembling the seismic isolation device, for the outer structure 1, the main body 11 is assembled first. The drive rack 13 and slide rail assembly 12 are connected to the main body 11 by welding, bonding or bolting. The anti-tipping plate 14 can be installed at this step, or it can be installed after the outer structure 1 and the seismic isolation mechanism 2 are assembled.

[0084] For the vibration isolation mechanism 2, first complete the assembly of the rectangular outer frame 211. After its assembly is completed, install the rolling assembly 22 onto the rectangular outer frame 211 and complete the installation of the anti-overturning sub-unit 25. When installing the energy-absorbing component 24, first install the first rotating normal connector 245 and the second rotating normal connector 246 to the corresponding positions of the second frame beam. Then, place the rotating mass block 243 into the position of the mounting cavity 2121, place the friction plate above the rotating mass block 243, adjust its position so that it is locked against the side wall of the second frame beam, and then remove the shaft 241 from the second frame beam. The pre-reserved hole at the beam mounting cavity 2121, that is, the middle of the second rotating normal connector 246, passes through and continues to pass through the friction plate and rotating mass block 243, and connects and fixes the rotating mass block 243 to the pre-reserved connection section on the shaft 241. Then, the unidirectional rotating component 242 and the drive gear 23 are combined and assembled on the corresponding position on the shaft 241. After completion, the four second frame beams are assembled together to form a rectangular inner frame 212 and fixed on the rectangular outer frame 211, thus completing the assembly of the intermediate structure.

[0085] For the overall installation of the vibration isolation device, the outer structure 1 and the vibration isolation mechanism 2 in the above state are assembled. The rolling component 22 on the vibration isolation mechanism 2 is engaged with the curvature sliding part 121 of the outer structure 1. The drive gear 23 on the vibration isolation mechanism 2 is engaged with the drive rack 13 of the outer structure 1. After this step is completed, if the anti-overturning plate 14 on the outer structure 1 has not yet been installed, it can be installed at this time. After installation, the anti-overturning sub-part 25 can be engaged with the anti-overturning plate 14, thereby completing the assembly of the vibration isolation device.

[0086] It should be noted that in the description of this specification, the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; the terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0087] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0088] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vibration isolation device, characterized in that, include: Two external structures arranged vertically, each external structure comprising: a main body, two sets of slide rail assemblies spaced apart on the first surface of the main body, and two first driving parts located between the two sets of slide rail assemblies. Each set of slide rail assemblies includes two curved sliding parts spaced apart along a direction perpendicular to the arrangement of the two sets of slide rail assemblies. The track surface of the curved sliding parts is a continuous and smooth concave surface. The two external structures are orthogonally arranged along a first direction and a second direction, and their first surfaces are opposite to each other. A seismic isolation mechanism, arranged between the two external structures, includes: Supporting framework; At least eight sets of rolling components are installed on the support frame, and each of the curvature sliding parts corresponds to at least one set of rolling components that can roll, so that the two external structures can be relatively displaced relative to the vibration isolation components in the first direction and the second direction under the action of external force, and return to the initial position after the external force is removed; Two sets of second drive components are respectively corresponding to the two external structures. Each set of second drive components includes a second drive part corresponding to the two first drive parts. The four second drive parts correspond one-to-one with and cooperate with the first drive parts on the two external structures. Two sets of semi-inertial capacity energy dissipation components are respectively corresponding to the two sets of second drive components. Each set of semi-inertial capacity energy dissipation components includes two energy-absorbing and dissipating components with opposite driving directions, which are used to cooperate with the two second drive units in the same set respectively. When the external structure generates a displacement increment relative to the vibration isolation mechanism in one of the positive or negative directions of the first or second direction, and the movement speed of the first drive unit is greater than the movement speed of the second drive unit, that is, when the driving equivalent angular velocity of the second drive unit is greater than the angular velocity of the energy-absorbing component, the corresponding second drive component drives the semi-inertial capacitive energy-absorbing component. In the semi-inertial capacitive energy-absorbing component, only the energy-absorbing component with the same driving direction as the displacement increment direction is driven to absorb and dissipate part of the energy from the external structure.

2. The vibration isolation device according to claim 1, characterized in that, The first surface of the main body is provided with anti-tipping plates on the outer sides of the two sets of slide rail assemblies facing away from each other. The anti-tipping plates are perpendicular to the first surface and are provided with curvature channels that correspond to and are adapted to the curvature of the adjacent curvature sliding part. The side portion of the support frame is provided with anti-tipping sub-parts that are movably inserted through the curvature channels of each anti-tipping plate. The anti-tipping sub-parts can only generate relative movement in the curvature channels along the extension direction of the curvature channels.

3. The vibration isolation device according to claim 1, characterized in that, The first drive unit includes a drive rack, which is arranged parallel to the slide rail assembly; The second drive unit includes a drive gear, which is rotatably mounted on the support frame and is connected to the energy-absorbing component in a transmission manner. The drive gear meshes with the corresponding drive rack.

4. The vibration isolation device according to claim 3, characterized in that, At least during the stroke in which the external structure and the vibration isolation assembly can produce relative displacement, the drive gear and the drive rack are always in contact and maintain a meshing relationship.

5. The vibration isolation device according to claim 3, characterized in that, The supporting framework includes: A rectangular outer frame, wherein the extension direction of the first frame beam forming the rectangular outer frame includes the first direction and the second direction, and each frame beam is respectively equipped with at least one set of the rolling components; The inner frame is rectangular, and the splicing point of the second frame beam forming the inner frame is located on the inner side of the corresponding first frame beam. The four energy-absorbing components are respectively installed on the four second frame beams.

6. The vibration isolation device according to claim 3, characterized in that, The second frame beam has a mounting cavity for mounting the energy-absorbing component, and the drive gear is located outside the mounting cavity; The energy-absorbing and dissipating component includes: A shaft is rotatably connected to the mounting cavity; A unidirectional rotating component has an inner ring and an outer ring. The outer ring is fixedly connected to the axle of the drive gear, and the inner ring is coaxial with and fixedly connected to one end of the shaft, so that when the unidirectional rotating component is in the locked direction, the drive gear can drive the shaft to rotate synchronously. A rotating mass block is coaxially fixed to the shaft. A friction element is coaxially and rotatably connected to the shaft, and the outer side of the friction element is fixedly connected to the second frame beam; When the energy-absorbing component is driven, the rotating mass block rotates under the drive of the shaft to absorb part of the energy from the external structure and generates friction with the friction component to dissipate the energy.

7. The vibration isolation device according to claim 5, characterized in that, The energy-absorbing component also includes: The first rotating normal connector is coaxially fitted onto the shaft body. The first rotating normal connector is disposed between the rotating mass block and the inner wall of the mounting cavity, and is in contact with the end face of the rotating mass block. The second rotary normal connector is coaxially fitted onto the shaft body, and the second rotary normal connector is located between the end of the shaft body extending to the outside of the mounting cavity and the outer wall of the second frame beam.

8. The vibration isolation device according to claim 1, characterized in that, The scrolling component includes at least one scroll member, the scroll member comprising: Wheel frame, fixed to the support frame; A rolling wheel is rotatably mounted on the wheel frame via a bearing. The rolling wheel is supported on the rail surface of the curved sliding part and can roll arbitrarily in both directions on the rail surface.

9. The vibration isolation device according to claim 8, characterized in that, The curvature sliding part includes two parallel curvature slide rails; The rolling assembly includes two rolling elements, and the rolling wheels of the two rolling elements are respectively supported on one of the curvature slide rails; Among them, a limiting ring is provided on the outer periphery of one end face of the rolling element, and the limiting ring is in contact with the side of the curvature slide rail. The limiting rings of the two rolling elements in the same group are located on the side that is close to each other or on the side that is far away from each other.

10. The vibration isolation device according to claim 1 or 2, characterized in that, The curved sliding part has limiting protrusions at both ends that are higher than the rail surface.

Images