Three-dimensional shock insulation platform and working method thereof

Abstract

The invention discloses a three-dimensional seismic isolation platform and a working method thereof. The three-dimensional seismic isolation platform comprises a bottom plate, a horizontal seismic isolation mechanism, a middle plate, a vertical seismic isolation mechanism and a top plate. The bottom plate is horizontally arranged at the bottommost part, the horizontal shock isolation mechanism is arranged between the bottom plate and the middle plate, and the middle plate horizontally and universally moves relative to the bottom plate through the horizontal shock isolation mechanism; the vertical shock isolation mechanism is arranged between the middle plate and the top plate, and the top plate moves in the vertical direction relative to the middle plate below through the vertical shock isolation mechanism; cultural relics to be exhibited are placed on the top of the top plate. According to the three-dimensional seismic isolation platform, the vertical seismic isolation mechanism is additionally arranged on the basis of the horizontal seismic isolation mechanism, so that damage of seismic longitudinal waves to cultural relics can be effectively reduced.

Description

Technical Field

[0001] The present invention relates to the field of earthquake-proof technology, and in particular to a three-dimensional earthquake-isolating platform and a working method thereof. Background Art

[0002] Earthquakes are sudden natural disasters. Large earthquakes can cause extremely serious damage. Since humans cannot accurately predict the occurrence of earthquakes, it is particularly important to prevent and mitigate earthquake disasters. The existing cultural relics earthquake-proof device is a device installed at the bottom of cultural relics or cultural relics display cabinets. It effectively absorbs seismic waves under the action of earthquakes, thereby isolating seismic waves and protecting cultural relics. The two-dimensional earthquake-proof platform is a floating plate on the upper part that can slide horizontally. When the earthquake only shakes in the horizontal direction, it can achieve an earthquake-free effect. A universal sliding device is installed between the two flat plates of the earthquake-proof platform. The lower base plate is fixed in the display cabinet, and the upper floating plate can slide back and forth and left and right with the shaking of the earthquake. This can prevent the cultural relics or precision instruments placed on the floating plate from tipping over or sliding.

[0003] The invention patent with the patent publication number CN113606285A discloses a seismic isolation platform, including a floating top plate, a fixed bottom plate, an intermediate seat plate, a damping mechanism and a tension spring. The intermediate seat plate is connected between the floating top plate and the fixed bottom plate through a cross-shaped horizontal and vertical guide rail mechanism. The number of tension springs is two groups, which are respectively arranged between the intermediate seat plate and the floating top plate and between the intermediate seat plate and the fixed bottom plate, so that the floating top plate can return to the middle position. The number of damping mechanisms is two sets, and they are respectively arranged horizontally or vertically. The damping mechanism includes a threaded slider, a transmission screw and a damping support. The transmission screw is arranged horizontally or vertically. The threaded slider is threadedly connected to the transmission screw and is arranged on the intermediate seat plate. The damping support is mounted at both ends of the transmission screw and is respectively arranged on the inner large side surface of the floating top plate or the fixed bottom plate. The patented seismic isolation platform realizes universal horizontal movement to isolate seismic waves through the horizontal and vertical guide rail mechanisms, and at the same time increases the damping mechanism to improve the starting damping force and avoid the inertial impact damage of cultural relics. However, this patented technical solution can only isolate and buffer the transverse waves generated during an earthquake, but there are no isolation measures for the longitudinal waves of the earthquake. In the event of a strong earthquake, the longitudinal waves of the earthquake will also cause the cultural relics to overturn or bump, causing damage to the cultural relics.

[0004] Therefore, it is necessary to develop a three-dimensional seismic isolation platform and a working method thereof to address the above defects. Summary of the invention

[0005] The purpose of the present invention is to provide a three-dimensional seismic isolation platform and a working method thereof, which can effectively reduce the damage of earthquake longitudinal waves to cultural relics by adding a vertical seismic isolation mechanism on the basis of a horizontal seismic isolation mechanism.

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

[0007] The present invention discloses a three-dimensional seismic isolation platform, comprising a bottom plate, a horizontal seismic isolation mechanism, an intermediate plate, a vertical seismic isolation mechanism and a top plate; the bottom plate is horizontally arranged at the bottom, the horizontal seismic isolation mechanism is arranged between the bottom plate and the intermediate plate, and the intermediate plate can realize horizontal universal movement relative to the bottom plate through the horizontal seismic isolation mechanism; the vertical seismic isolation mechanism is arranged between the intermediate plate and the top plate, and the top plate can realize vertical movement relative to the intermediate plate below through the vertical seismic isolation mechanism; cultural relics to be exhibited are placed on the top of the top plate.

[0008] Furthermore, the vertical seismic isolation mechanism includes vertical buffer units, and a plurality of the vertical buffer units are evenly distributed around the periphery of the vertical center line of the top plate.

[0009] Furthermore, the vertical buffer unit includes a pin support 1, a rocker arm, a pin support 2, a second linear guide rail, a tension spring fixing rod 2 and a second tension spring, the pin support 1 is fixedly connected to the top surface of the middle plate, the pin support 2 is fixedly connected to the bottom surface of the top plate, the pins at both ends of the rocker arm are connected between the pin support 1 and the pin support 2; the pin support 2 is slidably connected to the second linear guide rail through a slider, and the extension line of the second linear guide rail intersects with the vertical center line of the top plate; the second tension spring is tightened between the pin support 2 and the tension spring fixing rod 2, and the top end of the tension spring fixing rod 2 is fixed to the middle of the bottom surface of the top plate.

[0010] Furthermore, the number of the rocker arms is four, and the four rocker arms are divided into two pairs arranged in parallel up and down, and the corresponding pin support 1 and pin support 2 are respectively provided with two horizontally parallel pins for connecting the ends of the rocker arms.

[0011] Furthermore, both ends of the pin on the upper portion of the second pin support extend outward and are provided with an annular groove for hanging the second tension spring hook.

[0012] Furthermore, an inner limit block is provided at the inner end of the second linear guide rail, and the inner limit block limits the sliding block at the root of the second pin support from sliding inward; and a rubber pad is compounded on one side of the inner limit block that blocks the second pin support.

[0013] Furthermore, the vertical buffer unit also includes an inner tension spring bracket, an outer tension spring bracket and a third tension spring, the inner tension spring bracket and the outer tension spring bracket are both L-shaped bracket plates and are arranged next to the rocker arm; the bottom folding plate of the inner tension spring bracket is fixedly connected to the middle position of the top surface of the intermediate plate, the top folding plate of the outer tension spring bracket is fixedly connected to the outer periphery of the bottom surface of the top plate, the outer bottom of the third tension spring is inclined and its two ends are respectively connected to the bottom end of the outer tension spring bracket and the top end of the inner tension spring bracket.

[0014] Furthermore, the vertical buffer unit also includes an eye bolt, which is threadedly connected to a threaded hole at the bottom end of the tension spring outer bracket or the top end of the tension spring inner bracket, and the hook of the third tension spring is hung in the bolt head hole of the eye bolt.

[0015] Furthermore, the horizontal seismic isolation mechanism includes an adapter plate, a linear guide assembly and a reset spring assembly. The number of the linear guide assemblies is two and they are cross-arranged at the upper and lower ends of the adapter plate and are respectively connected to the bottom plate and the middle plate; the four groups of reset spring assemblies are respectively arranged on both sides of the two linear guide assemblies, and can reset the adapter plate in the center.

[0016] The present invention also discloses a working method of a three-dimensional seismic isolation platform, and uses any of the three-dimensional seismic isolation platforms described above to isolate and protect against seismic waves.

[0017] Compared with the prior art, the three-dimensional seismic isolation platform of the present invention has the following beneficial effects:

[0018] The three-dimensional seismic isolation platform of the present invention can achieve horizontal universal movement of the middle plate relative to the bottom plate by setting the horizontal seismic isolation mechanism, thereby isolating the influence of the horizontal seismic shear wave; by setting the vertical seismic isolation mechanism between the middle plate and the top plate, the top plate moves up and down relative to the vertical direction of the middle plate, thereby isolating the influence of the seismic longitudinal wave. Protecting the cultural relics placed on the top plate in three dimensions can effectively prevent the cultural relics from being overturned and damaged by bumps.

[0019] In addition, by installing the damper at the end of the screw rod, a damping effect can be generated on it, which is convenient for adjusting the size of the damping. By tightening the first tension spring between the tension spring seat 1 and the tension spring fixing rod 1, the adapter plate can be effectively reset in the center. By setting a plurality of circumferentially evenly distributed vertical buffer units between the top plate and the middle plate, the top plate can be stably supported to avoid the tilting of the top plate. The vertical displacement of the top plate is achieved by the swing of the swing arm relative to the pin support, which is convenient for the second tension spring to be installed in a nearly horizontal direction under normal conditions, saving space in the vertical direction; the free swing of the far end of the swing arm is achieved by the sliding connection between the pin support 2 and the second linear guide rail. By increasing the number of swing arms to four, two parallelogram components are formed on the two side walls of the pin support respectively, and two second tension springs are correspondingly set, so that the connection structure is more stable and prevents the top plate from overturning. By setting the inner limit block, the slider at the root of the pin support 2 is prevented from sliding excessively inward and being unable to reset. The additional inner tension spring bracket, outer tension spring bracket and third tension spring actually constitute an auxiliary reset mechanism, which pulls the top plate upward to prevent the far end of the swing rod from swinging downward excessively and causing the top plate to be unable to reset. By arranging a hook for installing the third tension spring with an eye bolt, the tension strength of the third tension spring can be adjusted so that the top plate obtains a suitable reset force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the main structure of the three-dimensional seismic isolation platform of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA part;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the three-dimensional seismic isolation platform of the present invention;

[0024] Figure 4 for Figure 2 A schematic diagram of the partial enlarged structure of the middle I part;

[0025] Figure 5 It is a schematic diagram of the explosion structure of the horizontal seismic isolation mechanism of the present invention;

[0026] Figure 6 It is a schematic diagram of the explosion structure of the vertical seismic isolation mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the vertical buffer unit in the present invention.

[0028] Explanation of the reference numerals: 1. bottom plate; 101. guide rail groove; 2. adapter plate; 201. tension spring fixing rod 1; 3. slider; 4. first linear guide rail; 5. lead screw; 6. nut block; 7. nut limiting sleeve; 8. lead screw support; 9. first tension spring; 10. tension spring seat 1; 11. damper; 12. middle plate; 1201. pin support positioning groove; 13. pin support 1; 14. rocker arm; 15. pin support 2; 16. second linear guide rail; 1601. inner limiting block; 17. tension spring fixing rod 2; 18. second tension spring; 19. tension spring inner bracket; 20. tension spring outer bracket; 21. third tension spring; 22. sheep eye screw; 23. top plate. DETAILED DESCRIPTION

[0029] The core of the present invention is to provide a three-dimensional seismic isolation platform, which can effectively reduce the damage of earthquake longitudinal waves to cultural relics by adding a vertical seismic isolation mechanism on the basis of the horizontal seismic isolation mechanism.

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] With reference to the accompanying drawings, Figure 1 This is a schematic diagram of the main structure of the three-dimensional seismic isolation platform of the present invention; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the middle AA part; Figure 3 It is a schematic diagram of the three-dimensional structure of the three-dimensional seismic isolation platform of the present invention; Figure 4 for Figure 2 A schematic diagram of the partial enlarged structure of the middle I part; Figure 5 It is a schematic diagram of the explosion structure of the horizontal buffer mechanism of the present invention; Figure 6 It is a schematic diagram of the explosion structure of the vertical seismic isolation mechanism of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the vertical buffer unit in the present invention.

[0033] In a specific embodiment, Figures 1 to 7 As shown, the three-dimensional seismic isolation platform of the present invention includes a bottom plate 1, a horizontal seismic isolation mechanism, an intermediate plate 12, a vertical seismic isolation mechanism and a top plate 23. The bottom plate 1 is horizontally arranged at the bottom, that is, the bottom plate 1 is horizontally installed on the base of a cultural relic cabinet or an exhibition stand. The horizontal seismic isolation mechanism is arranged between the bottom plate 1 and the intermediate plate 12, and the intermediate plate 12 can realize horizontal universal movement relative to the bottom plate 1 through the horizontal seismic isolation mechanism. The vertical seismic isolation mechanism is arranged between the intermediate plate 12 and the top plate 23, and the top plate 23 can realize vertical movement relative to the intermediate plate 12 below through the vertical seismic isolation mechanism. A plurality of mounting holes are opened on the top plate 23, and cultural relics to be exhibited are placed on the top of the top plate 23.

[0034] By setting the horizontal seismic isolation mechanism, the middle plate 12 can move horizontally relative to the bottom plate 1, thereby isolating the horizontal seismic shear wave effect; by setting the vertical seismic isolation mechanism between the middle plate 12 and the top plate 23, the top plate 23 moves up and down relative to the middle plate 12 in the vertical direction, thereby isolating the seismic longitudinal wave effect. Protecting the cultural relics placed on the top plate 23 in three dimensions can effectively prevent the cultural relics from being overturned and damaged by bumps.

[0035] In a specific embodiment of the present invention, Figures 1 to 5As shown, the horizontal seismic isolation mechanism includes an adapter plate 2, a linear guide assembly and a reset spring assembly. The number of the linear guide assemblies is two and they are cross-arranged at the upper and lower ends of the adapter plate 2 and are respectively connected to the bottom plate 1 and the middle plate 12. Four groups of reset spring assemblies are respectively arranged on both sides of the two linear guide assemblies, which can reset the adapter plate 2 in the center.

[0036] Specifically, if Figures 1 to 5 As shown, the linear guide assembly includes a slider 3, a first linear guide rail 4, a screw 5, a nut block 6, a nut limit sleeve 7, a screw support 8 and a damper 11. The linear guide assembly described below is explained, and the two first linear guide rails 4 are arranged in parallel and symmetrically in the middle position of the top surface of the base plate 1, and the first linear guide rails 4 are installed in the guide rail groove 101 by screws. The middle plate 12 is respectively connected to the first linear guide rails 4 by means of the two sliders 3 below. The screw 5 is parallelly mounted in the middle position of the two first linear guide rails 4 through the screw supports 8 at both ends, and the nut block 6 is connected to the screw 5 by transmission threads, and the nut block 6 is installed in the middle position of the bottom surface of the adapter plate 2 through the nut limit sleeve 7. The damper 11 is installed in the screw support 8 and can provide damping output to the screw 5. The linear guide assembly described above is consistent with the structure below, except that the installation direction is perpendicular to it and is installed on the bottom surface of the middle plate 12.

[0037] Specifically, if Figures 1 to 5 As shown, the reset tension spring assembly includes a first tension spring 9 and a tension spring seat 10, and a tension spring fixing rod 201 is disposed in the center of each of the four sides of the adapter plate 2. The bottom plate 1 is provided with tension spring seats 10 on both sides of the linear guide assembly below, and the first tension spring 9 is tightened between the tension spring seat 10 and the corresponding tension spring fixing rod 201. The bottom surface of the intermediate plate 12 is provided with tension spring seats 10 on both sides of the linear guide assembly above, and the first tension spring 9 is tightened between the tension spring seat 10 and the corresponding tension spring fixing rod 201.

[0038] The damper 11 is installed at the end of the screw rod 5 to produce a damping effect on it, which is convenient for adjusting the damping size. The first tension spring 9 is tightened between the tension spring seat 10 and the tension spring fixing rod 201, which can effectively reset the adapter plate 2 in the center.

[0039] In a specific embodiment of the present invention, Figures 1 to 3 , Figure 6 and Figure 7 As shown, the vertical seismic isolation mechanism includes vertical buffer units, and a plurality of the vertical buffer units are evenly distributed around the periphery of the vertical center line of the top plate 23. In a specific embodiment, the number of the vertical buffer units is four.

[0040] By arranging a plurality of circumferentially evenly distributed vertical buffer units between the top plate 23 and the middle plate 12 , the top plate 23 can be stably supported to avoid the top plate 23 from tilting.

[0041] Specifically, if Figure 6 and Figure 7 As shown, the vertical buffer unit includes a pin support 13, a swing rod 14, a pin support 2 15, a second linear guide 16, a tension spring fixing rod 2 17 and a second tension spring 18. The pin support 13 is fixedly connected to the top surface of the middle plate 12, and the pin support 13 is installed in the pin support positioning groove 1201 on the top surface of the middle plate 12 by screws. The pin support 2 15 is fixedly connected to the bottom surface of the top plate 23, and the pins at both ends of the swing rod 14 are connected between the pin support 13 and the pin support 2 15, and the swing rod 14 is tilted with the outer end higher and the inner end lower. The pin support 2 15 is slidably connected to the second linear guide 16 through a slider, and the second linear guide 16 is installed on the bottom surface of the top plate 23 by screws, and the guide extension line of the second linear guide 16 intersects with the vertical center line of the top plate 23. The second tension spring 18 is tightened between the second pin support 15 and the second tension spring fixing rod 17. The second tension spring 18 is arranged approximately in the horizontal direction under normal conditions. The top end of the second tension spring fixing rod 17 is fixed to the middle of the bottom surface of the top plate 23. The top end of the second tension spring fixing rod 17 is provided with a threaded rod and a bolt head, and the bottom end of the second tension spring fixing rod 17 is provided with a ring groove for hanging the hook of the second tension spring 18.

[0042] Obviously, the vertical buffer unit can also adopt a combination of a guide column, a sleeve and a compression spring, and can also achieve slight movement in the vertical direction. However, the use of a guide column combined with a compression spring requires a larger vertical space, which will increase the height of the isolation platform. On the other hand, the hardness is relatively large, which is not conducive to effective isolation. This conventional replacement method also falls within the scope of protection of the present invention.

[0043] It should be noted that the three-dimensional seismic isolation platform of the present invention does not have a separate damping mechanism in the vertical direction. The reason is that generally speaking, the longitudinal wave of an earthquake has a smaller amplitude than the transverse wave, and the damping effect can be achieved by using the friction resistance between the rocker rod 14 and the pin support. Obviously, a sleeve damper can also be set between the middle plate 12 and the top plate 23. The sleeve damper in the vertical direction is set in the middle position of the bottom surface of the top plate 23. By adjusting the matching clearance between its sleeves, the damping size can be adjusted.

[0044] The vertical displacement of the top plate 23 is achieved by the swing of the rocker arm 14 relative to the pin support, which facilitates the installation of the second tension spring 18 in a nearly horizontal direction under normal conditions, saving space in the vertical direction; the free swing of the far end of the rocker arm 14 is achieved by the guiding sliding connection between the pin support 15 and the second linear guide rail 16.

[0045] Specifically, if Figures 1 to 3 , Figure 6 and Figure 7 As shown, in each group of the vertical buffer units, there are four rocker rods 14, which are divided into two pairs arranged in parallel up and down. The corresponding pin support 1 13 and pin support 2 15 are respectively provided with two horizontally parallel pins for connecting the ends of the rocker rods 14.

[0046] Specifically, if Figure 6 and Figure 7 As shown, both ends of the pin shaft on the upper part of the pin shaft support 15 extend outward and are provided with annular grooves for hanging the hooks of the second tension spring 18. That is, in each group of the vertical buffer units, the number of the second tension springs 18 is two. For the entire seismic isolation platform, the number of the corresponding tension spring fixing rods 17 is four, each of which is hung with two hooks of the second tension spring 18.

[0047] Specifically, if Figure 6 and Figure 7 As shown, the inner end of the second linear guide rail 16 is also provided with an inner limit block 1601, which is installed on the bottom surface of the top plate 23 by screws. The inner limit block 1601 limits the sliding block at the root of the second pin support 15 from sliding inward. The inner limit block 1601 is compounded with a rubber pad on one side of the second pin support 15.

[0048] By increasing the number of swing rods 14 to four, two parallelogram components are formed on the two side walls of the pin support, and two second tension springs 18 are correspondingly arranged, so that the connection structure is more stable and prevents the top plate 23 from tipping over. The inner limit block 1601 is arranged to prevent the slider at the root of the second pin support 15 from excessively sliding inwards and being unable to reset.

[0049] In a specific embodiment of the present invention, Figures 1 to 3 , Figure 6 and Figure 7 As shown, the vertical buffer unit further includes a tension spring inner bracket 19, a tension spring outer bracket 20 and a third tension spring 21. The tension spring inner bracket 19 and the tension spring outer bracket 20 are both L-shaped bracket plates and are arranged beside the swing rod 14. The bottom folding plate of the tension spring inner bracket 19 is fixedly connected to the middle position of the top surface of the middle plate 12, the top folding plate of the tension spring outer bracket 20 is fixedly connected to the outer periphery of the bottom surface of the top plate 23, and the outer bottom of the third tension spring 21 is arranged at an inner height and tilted, and the two ends are respectively connected to the bottom end of the tension spring outer bracket 20 and the top end of the tension spring inner bracket 19.

[0050] The additional inner tension spring bracket 19, the outer tension spring bracket 20 and the third tension spring 21 actually constitute an auxiliary reset mechanism, which pulls the top plate 23 upward to prevent the far end of the swing rod 14 from swinging excessively downward and causing failure to reset.

[0051] Specifically, if Figure 7As shown, the vertical buffer unit also includes an eye bolt 22, which is threadedly connected to a threaded hole at the bottom end of the tension spring outer bracket 20 or the top end of the tension spring inner bracket 19, and the hook of the third tension spring 21 is hung in the bolt head hole of the eye bolt 22.

[0052] By providing the eye bolt 22 to install the hook of the third tension spring 21 , the tensioning strength of the third tension spring 21 can be adjusted so that the top plate 23 obtains a suitable reset force.

[0053] The working principle of the three-dimensional seismic isolation platform of the present invention is as follows: the bottom plate 1 is horizontally installed on the base of the cultural relic cabinet or exhibition stand, and the cultural relics are placed on the top surface of the top plate 23 and fixed by using a clamp or the like. When an earthquake occurs, the bottom plate 1 shakes under the influence of the earthquake, and the seismic transverse wave causes the bottom plate 1 to reciprocate in any direction in the horizontal direction, front and back, left and right. The middle plate 12 can achieve composite seismic isolation in any horizontal direction relative to the bottom plate 1 through the two linear guide assemblies arranged vertically in a cross, which greatly reduces the reciprocating movement amplitude of the middle plate 12. In this process, the damper 11 outputs damping to the screw rod 5 to offset the seismic energy; the first tension spring 9 can pull the adapter plate 2 to prevent it from excessive displacement and automatically reset it. The longitudinal earthquake wave causes the bottom plate 1 and the middle plate 12 to reciprocate in the vertical direction, and the top plate 23 greatly reduces the amplitude displacement in the vertical direction under the action of the vertical seismic isolation mechanism. The vertical vibration of the bottom plate 1 and the middle plate 12 causes the pendulum 14 to swing, and the second pin support 15 slides damped on the second linear guide 16 to consume part of the seismic energy; the second tension spring 18 and the third tension spring 21 work together to play a buffering role, and also make the pendulum 14 reset after repeated swings.

[0054] In summary, the three-dimensional seismic isolation platform of the present invention, through the setting of the horizontal seismic isolation mechanism, the middle plate 12 can move horizontally in universal directions relative to the bottom plate 1, thereby isolating the influence of the horizontal seismic shear wave; by setting the vertical seismic isolation mechanism between the middle plate 12 and the top plate 23, the top plate 23 moves up and down in the vertical direction relative to the middle plate 12, thereby isolating the influence of the seismic longitudinal wave. Protecting the cultural relics placed on the top plate 23 in three dimensions can effectively prevent the cultural relics from overturning and bumping damage. In addition, by installing the damper 11 at the end of the screw rod 5, it can produce a damping effect on it, which is convenient for adjusting the size of the damping. By tightening the first tension spring 9 between the tension spring seat 10 and the tension spring fixing rod 201, the adapter plate 2 can be effectively reset in the center. By setting a plurality of circumferentially evenly distributed vertical buffer units between the top plate 23 and the middle plate 12, the top plate 23 can be stably supported to avoid the tilt of the top plate 23. The vertical displacement of the top plate 23 is achieved by the swing of the swing rod 14 relative to the pin support, which facilitates the installation of the second tension spring 18 in a nearly horizontal direction under normal conditions, saving space in the vertical direction; the free swing of the far end of the swing rod 14 is achieved by the guided sliding connection between the pin support 15 and the second linear guide 16. By increasing the number of swing rods 14 to four, two parallelogram components are formed on the two side walls of the pin support, and two second tension springs 18 are correspondingly arranged, so that the connection structure is more stable and the top plate 23 is prevented from overturning. The setting of the inner limit block 1601 prevents the slider at the root of the pin support 15 from sliding inward excessively and causing the situation that it cannot be reset. The additional tension spring inner bracket 19, tension spring outer bracket 20 and third tension spring 21 actually constitute an auxiliary reset mechanism, which pulls the top plate 23 upward to prevent the far end of the swing rod 14 from swinging downward excessively and causing the situation that it cannot be reset. By providing the eye bolt 22 to install the hook of the third tension spring 21 , the tensioning strength of the third tension spring 21 can be adjusted so that the top plate 23 obtains a suitable reset force.

[0055] The present invention also discloses a working method of a three-dimensional seismic isolation platform, and uses the three-dimensional seismic isolation platform described in any of the above embodiments to isolate and protect against seismic waves.

[0056] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0057] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A three-dimensional seismic isolation platform, characterized in that: The invention comprises a bottom plate (1), a horizontal seismic isolation mechanism, an intermediate plate (12), a vertical seismic isolation mechanism and a top plate (23); the bottom plate (1) is arranged horizontally at the bottom, the horizontal seismic isolation mechanism is arranged between the bottom plate (1) and the intermediate plate (12), and the intermediate plate (12) is able to move horizontally in all directions relative to the bottom plate (1) through the horizontal seismic isolation mechanism; the vertical seismic isolation mechanism is arranged between the intermediate plate (12) and the top plate (23), and the top plate (23) is able to move vertically relative to the intermediate plate (12) below through the vertical seismic isolation mechanism; and cultural relics to be exhibited are placed on the top of the top plate (23).

2. The three-dimensional seismic isolation platform according to claim 1, characterized in that: The vertical seismic isolation mechanism comprises vertical buffer units, and a plurality of the vertical buffer units are evenly distributed around the periphery of the vertical center line of the top plate (23).

3. The three-dimensional seismic isolation platform according to claim 2, characterized in that: The vertical buffer unit comprises a pin support 1 (13), a swing arm (14), a pin support 2 (15), a second linear guide rail (16), a tension spring fixing rod 2 (17) and a second tension spring (18), wherein the pin support 1 (13) is fixedly connected to the top surface of the intermediate plate (12), the pin support 2 (15) is fixedly connected to the bottom surface of the top plate (23), and the pins at both ends of the swing arm (14) are connected between the pin support 1 (13) and the pin support 2 (15); the pin support 2 (15) is slidably connected to the second linear guide rail (16) through a slider, and the guide extension line of the second linear guide rail (16) intersects with the vertical center line of the top plate (23); the second tension spring (18) is tightened between the pin support 2 (15) and the tension spring fixing rod 2 (17), and the top end of the tension spring fixing rod 2 (17) is fixed to the middle of the bottom surface of the top plate (23).

4. The three-dimensional seismic isolation platform according to claim 3, characterized in that: The number of the swing rods (14) is four, and the four swing rods (14) are divided into two pairs arranged in parallel up and down, and the corresponding pin support 1 (13) and pin support 2 (15) are respectively provided with two horizontally parallel pins for connecting the ends of the swing rods (14).

5. The three-dimensional seismic isolation platform according to claim 4, characterized in that: The two ends of the pin shaft at the upper part of the second pin shaft support (15) extend outwards and are provided with an annular groove for hanging the hook of the second tension spring (18).

6. The three-dimensional seismic isolation platform according to claim 3, characterized in that: The inner end of the second linear guide rail (16) is also provided with an inner limit block (1601), and the inner limit block (1601) limits the sliding block at the root of the second pin support (15) from sliding inwards; one side of the inner limit block (1601) that blocks the second pin support (15) is compounded with a rubber pad.

7. The three-dimensional seismic isolation platform according to any one of claims 3 to 6, characterized in that: The vertical buffer unit also includes an inner tension spring bracket (19), an outer tension spring bracket (20) and a third tension spring (21); the inner tension spring bracket (19) and the outer tension spring bracket (20) are both L-shaped bracket plates and are arranged beside the swing rod (14); the bottom folding plate of the inner tension spring bracket (19) is fixedly connected to the middle position of the top surface of the middle plate (12); the top folding plate of the outer tension spring bracket (20) is fixedly connected to the outer periphery of the bottom surface of the top plate (23); the outer bottom of the third tension spring (21) is arranged at an inclined inner height and its two ends are respectively connected to the bottom end of the outer tension spring bracket (20) and the top end of the inner tension spring bracket (19).

8. The three-dimensional seismic isolation platform according to claim 7, characterized in that: The vertical buffer unit also includes an eye bolt (22), which is threadedly connected to a threaded hole at the bottom end of the tension spring outer bracket (20) or the top end of the tension spring inner bracket (19), and the hook of the third tension spring (21) is hung in the bolt head hole of the eye bolt (22).

9. The three-dimensional seismic isolation platform according to claim 1, characterized in that: The horizontal seismic isolation mechanism comprises an adapter plate (2), a linear guide assembly and a reset spring assembly. The linear guide assemblies are two in number and are cross-arranged at the upper and lower ends of the adapter plate (2) and are respectively connected to the bottom plate (1) and the middle plate (12); four groups of reset spring assemblies are respectively arranged on both sides of the two linear guide assemblies, and can reset the adapter plate (2) in the center.

10. A working method of a three-dimensional seismic isolation platform, characterized in that: The three-dimensional seismic isolation platform described in any one of claims 1 to 9 is used to isolate and protect against seismic waves.

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