Seismic isolation platform

Abstract

The present application relates to the technical field of shock absorbing devices, and in particular to a seismic isolation platform, which includes a bottom support seat, an upper support seat and a spherical support body, wherein the upper end surface of the bottom support seat is formed with a plurality of first grooves; the upper support seat is located above the bottom support seat, and the lower end surface of the upper support seat is formed with a plurality of second grooves, wherein the first groove and the second groove are spherical grooves, respectively, and the first groove and the second groove are arranged relatively to each other in a one-to-one correspondence; there are a plurality of spherical support bodies, which are respectively located between the first groove and the second groove arranged relatively, and can make the upper support seat and the bottom support seat swing relative to each other by rolling in the first groove and the second groove. When an earthquake occurs, the energy of the seismic wave can be effectively dispersed, thereby maintaining stable support for the products or equipment on the platform. The damping size can be adjusted according to different products or equipment, effectively reducing the potential damage of seismic fluctuations to the products or equipment, and ensuring the safety of the products or equipment in earthquakes.

Description

Technical Field

[0001] The present application relates to the technical field of shock absorbing devices, and in particular to a seismic isolation platform. Background Art

[0002] At present, seismic isolation platforms mainly rely on rubber pads, spring structures or single spherical seismic isolation devices to achieve the purpose of earthquake resistance. Although these seismic isolation devices can reduce the vibration caused by earthquakes to a certain extent, they also have shortcomings such as limited shock absorption effect, insufficient stability, inability to adjust the seismic damping effect, and difficulty in later maintenance. In addition, the spring has a decay period, which can lead to breakage and other situations. Summary of the invention

[0003] The present application provides a seismic isolation platform, which is used to solve the problems of limited shock absorption effect, insufficient stability, unadjustable seismic damping effect and difficulty in subsequent maintenance of the seismic isolation platform in the prior art.

[0004] The present application provides a seismic isolation platform, comprising:

[0005] A bottom support seat, wherein the upper end surface of the bottom support seat is formed with a plurality of first grooves;

[0006] The upper support seat is located above the bottom support seat, and a plurality of second grooves are formed on the lower end surface of the upper support seat, wherein the first grooves and the second grooves are spherical grooves, and the first grooves and the second grooves are arranged in a one-to-one correspondence with each other;

[0007] There are multiple spherical support bodies, which are respectively located between the first groove and the second groove that are arranged oppositely. The upper support seat and the bottom support seat can swing relative to each other by rolling in the first groove and the second groove.

[0008] In one possible design, the seismic isolation platform also includes:

[0009] A connecting plate is located between the bottom support seat and the upper support seat, and the connecting plate is provided with holes at positions corresponding to the spherical support bodies;

[0010] The limit seat is installed at the perforation, the inner wall of the limit seat is a spherical surface matched with the spherical support body, and a ball is arranged between the inner wall of the limit seat and the spherical support body.

[0011] In one possible design, the seismic isolation platform also includes:

[0012] A first guide rail is disposed on the bottom support seat;

[0013] A first sliding block is slidably matched with the first guide rail, and a convex ring is provided on the upper end surface of the first sliding block;

[0014] A second guide rail is arranged on the upper support seat, and the length direction of the second guide rail is perpendicular to the length direction of the first guide rail;

[0015] The second sliding block is slidably matched with the second guide rail, and a convex shaft is provided on the lower end surface of the second sliding block, and the convex shaft is gap-matched with the convex ring.

[0016] In a possible design, the bottom support seat and the upper support seat are respectively provided with a damping adjustment mechanism, and the damping adjustment mechanism includes:

[0017] A traction rope, wherein the free ends of the traction rope are respectively connected to the opposite ends of the first slider / the second slider;

[0018] The friction component is in sliding contact with the middle part of the traction rope, and the friction component prevents the traction rope from sliding by generating friction with the traction rope.

[0019] In one possible design, the friction assembly includes a front pressure plate and a rear pressure plate, which are mounted on a bottom support seat / upper support seat, the gap between the front pressure plate and the rear pressure plate is adjustable, and the traction rope is located between the front pressure plate and the rear pressure plate.

[0020] In one possible design, the friction assembly further includes:

[0021] A guide plate, the guide plate is installed on the bottom support seat / upper support seat, and a guide hole is opened on the guide plate;

[0022] A guide screw, one end of which is connected to the rear pressure plate, and the other end of which passes through the guide hole;

[0023] A first adjusting nut is sleeved on a side of the guide screw away from the front pressure plate;

[0024] A second adjusting nut is sleeved on a side of the guide screw rod close to the front pressure plate;

[0025] The adjusting spring is sleeved on the guide screw between the second adjusting nut and the rear pressure plate.

[0026] In a possible design, the friction assembly further includes a wear-resistant plate, and the wear-resistant plate is arranged on the front pressure plate and / or the rear pressure plate.

[0027] In a possible design, the middle portion of the traction rope is disconnected and connected with a sliding sheet, and opposite sides of the sliding sheet are in sliding contact with the front pressure plate and the rear pressure plate respectively.

[0028] In a possible design, guide pulleys are installed on the bottom support seat and the upper support seat respectively, and the traction rope passes over the guide pulleys so that the portion of the traction rope close to the first slider / the second slider is parallel to the first guide rail / the second guide rail.

[0029] In a possible design, a bearing is sleeved on the convex shaft, and a gap is provided between the outer ring of the bearing and the inner wall of the convex ring.

[0030] The beneficial effects of this application are as follows:

[0031] The seismic isolation platform of the present application is provided with a plurality of spherical support bodies. When an earthquake occurs, the spherical support bodies roll in the first groove and the second groove, thereby effectively dispersing the energy of the seismic wave, thereby maintaining stable support for the objects on the platform.

[0032] By setting up a damping adjustment mechanism, the damping size can be adjusted according to different products or equipment. Compared with traditional seismic isolation systems, this platform can provide more efficient seismic isolation protection, effectively reduce the potential damage to products or equipment caused by seismic fluctuations, and ensure the safety of products or equipment during earthquakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A three-dimensional diagram of a seismic isolation platform provided in an embodiment of the present application;

[0035] Figure 2 A top view of the seismic isolation platform provided in an embodiment of the present application;

[0036] Figure 3 A front view of a seismic isolation platform provided in an embodiment of the present application;

[0037] Figure 4 A side view of a seismic isolation platform provided in an embodiment of the present application;

[0038] Figure 5 A cross-sectional view taken along line AA of the seismic isolation platform provided in an embodiment of the present application;

[0039] Figure 6 for Figure 5 Schematic diagram of the local structure in;

[0040] Figure 7 A cross-sectional view of a BB of a seismic isolation platform provided in an embodiment of the present application;

[0041] Figure 8 A cross-sectional view of CC of the seismic isolation platform provided in an embodiment of the present application;

[0042] Fig. 9 A cross-sectional view of DD of the seismic isolation platform provided in an embodiment of the present application;

[0043] Reference numerals:

[0044] 100, bottom support seat; 110, first groove; 130, chassis; 200, upper support seat; 210, second groove; 300, spherical support body; 400, connecting plate; 500, limit seat; 510, first bracket; 520, second bracket; 600, ball; 710, first guide rail; 720, first slider; 730, convex ring; 740, second guide rail; 750, second slider; 760, convex shaft; 770, bearing; 800, damping adjustment mechanism; 810, traction rope; 820, front pressure plate; 830, rear pressure plate; 840, guide plate; 850, guide screw; 861, first adjusting nut; 862, second adjusting nut; 870, adjustment spring; 880, wear-resistant plate; 890, sliding sheet; 900, guide pulley. DETAILED DESCRIPTION

[0045] The technical solution of the present application will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0046] Combine the following Figure 1-Figure 9 , describing the seismic isolation platform provided in the embodiments of the present application.

[0047] Reference Figure 1-Figure 5 As shown, the seismic isolation platform provided in the embodiment of the present application includes a bottom support seat 100, an upper support seat 200 and a spherical support body 300. The bottom end of the bottom support seat 100 is installed with a chassis 130, and the upper support seat 200 is located above the bottom support seat 100. The bottom support seat 100 and the upper support seat 200 can be square seats or circular seats. The upper end surface of the upper support seat 200 is a plane for placing items. Specifically, the upper end surface of the bottom support seat 100 is formed with a plurality of first grooves 110, and the lower end surface of the upper support seat 200 is formed with a plurality of second grooves 210, and the first grooves 110 and the second grooves 210 are spherical grooves respectively. In this embodiment, four first grooves 110 are respectively opened at positions near the corners of the bottom support seat 100; and four second grooves 210 are respectively opened at positions near the corners of the upper support seat 200. The first grooves 110 and the second grooves 210 are arranged one by one in a relative manner, thereby forming four groups of first grooves 110 and second grooves 210.

[0048] There are four spherical support bodies 300, each of which is located between the first groove 110 and the second groove 210 that are relatively arranged. The curvature radius corresponding to the outer spherical surface of the spherical support body 300 is smaller than the curvature radius of the first groove 110 and the second groove 210. When an earthquake occurs, the spherical support body 300 can roll in the first groove 110 and the second groove 210, causing the upper support seat 200 and the bottom support seat 100 to swing relative to each other, thereby effectively dispersing the energy of the seismic waves, thereby maintaining stable support for objects on the platform.

[0049] Reference Figure 5 , Figure 6 As shown, the seismic isolation platform also includes a connecting plate 400, a limiting seat 500 and a ball 600. The connecting plate 400 is located between the bottom support seat 100 and the upper support seat 200. The connecting plate 400 is provided with holes at positions corresponding to the spherical support body 300, so that the spherical support body 300 is located in the holes. The limiting seat 500 is installed at the hole, and the inner wall of the limiting seat 500 is a spherical surface that matches the spherical support body 300. The ball 600 is arranged between the inner wall of the limiting seat 500 and the spherical support body 300. Specifically, the limit seat 500 includes a first bracket 510 and a second bracket 520. The first bracket 510 and the second bracket 520 are annular seats. The outer walls of the first bracket 510 and the second bracket 520 are respectively provided with convex edges, and mounting holes are opened on the convex edges; the inner walls of the first bracket 510 and the second bracket 520 are respectively spherical surfaces. After the first bracket 510 is placed above the second bracket 520 and installed on the connecting plate 400 by bolts, the inner walls of the first bracket 510 and the second bracket 520 jointly form a spherical surface matching the outer wall surface of the spherical support body 300; the ball 600 is arranged between the inner walls of the first bracket 510 and the second bracket 520 and the spherical support body 300, so that the spherical support body 300 can roll freely in the limit seat 500.

[0050] If the chassis 130 is not installed flat, resulting in the sphere centers of the spherical support bodies 300 not being in the same horizontal plane, one or more of the spherical support bodies 300 will be displaced during an earthquake, and the displaced spherical support bodies 300 will not move with the bottom support seat 100 and the upper support seat 200, resulting in inaccurate positioning. The remaining spherical support bodies 300 continue to work, resulting in the remaining spherical support bodies 300 having a smaller and smaller travel range, and finally gradually getting stuck, resulting in the tipping of the items or devices on the upper support seat 200. The present application, through the structure of the connecting plate 400, can effectively avoid the problem that the displacement of one or several spherical support bodies 300 causes the movement range of other spherical support bodies 300 to become smaller and smaller, and finally causes the tipping of the cultural relics storage equipment.

[0051] Reference Figure 7As shown, the seismic isolation platform also includes a first guide rail 710, a first slider 720, a second guide rail 740 and a second slider 750. The first guide rail 710 is arranged on the bottom support seat 100. The first guide rail 710 is arranged along the length direction of the bottom support seat 100. The first slider 720 is slidably matched with the first guide rail 710, and a convex ring 730 is arranged on the upper end surface of the first slider 720. The second guide rail 740 is installed on the upper support seat 200. The second guide rail 740 is arranged along the width direction of the upper support seat 200. The length direction of the second guide rail 740 is perpendicular to the length direction of the first guide rail 710. The second slider 750 is slidably matched with the second guide rail 740. The lower end surface of the second slider 750 is provided with a convex shaft 760. The convex shaft 760 and the convex ring 730 are coaxially arranged, and the central axis thereof is consistent with the height direction of the seismic isolation platform. There is a small gap between the outer wall of the convex shaft 760 and the inner wall of the convex ring 730. When the spherical support body 300 rolls, the convex shaft 760 and the convex ring 730 can rotate and move axially. In this way, by setting the guide rail slider structure, the motion is decomposed into two mutually perpendicular directions of linear motion and rotation. By using the friction force of the guide rail slider itself, the rolling amplitude of the spherical support body 300 can be controlled, so that the upper support seat 200 does not swing too much.

[0052] In order to adapt the convex shaft 760 and the convex ring 730 , an avoidance hole is opened in the center of the connecting plate 400 .

[0053] In some specific embodiments, a bearing 770 is sleeved on the convex shaft 760, and a gap is provided between the outer ring of the bearing 770 and the inner wall of the convex ring 730. In this way, when the convex shaft 760 and the convex ring 730 rotate relative to each other, the problem of rotation jamming caused by the contact between the inner wall of the convex ring 730 and the outer wall of the convex shaft 760 can be avoided. At the same time, since there is a gap between the outer ring of the bearing 770 and the inner wall of the convex ring 730, the axial relative movement between the convex shaft 760 and the convex ring 730 will not be affected.

[0054] Reference Figure 8 , Fig. 9 As shown, the damping adjustment mechanism 800 is respectively provided on the bottom support seat 100 and the upper support seat 200. Since the damping adjustment mechanism 800 on the upper support seat 200 has the same structure as the damping adjustment mechanism 800 on the bottom support seat 100, the damping adjustment mechanism 800 on the bottom support seat 100 is taken as an example for description.

[0055] The damping adjustment mechanism 800 includes a traction rope 810 and a friction assembly. The traction rope 810 may be a steel wire rope. The traction rope 810 has two free ends, one of which is connected to one end of the first slider 720 through a steel wire rope joint, and the other free end is connected to the other end of the first slider 720 through a steel wire rope joint. The friction assembly is in sliding contact with the middle of the traction rope 810, and the friction assembly generates friction with the traction rope 810 to hinder the traction rope 810 from sliding.

[0056] Specifically, the friction assembly includes a front pressure plate 820 and a rear pressure plate 830, which are respectively mounted on the bottom support seat 100, and the gap between the front pressure plate 820 and the rear pressure plate 830 is adjustable. Specifically, the front pressure plate 820 is mounted on the edge of the bottom support seat 100, and a cross column and a threaded hole are provided on one side of the front pressure plate 820, and the cross column is passed through the through hole on the edge of the bottom support seat 100. Nuts are also welded on the edge of the bottom support seat 100, and studs pass through the nuts in sequence and enter the threaded holes of the front pressure plate 820. By screwing the studs, the position of the front pressure plate 820 can be adjusted.

[0057] A guide screw 850 is provided on one side of the rear pressure plate 830, and the guide plate 840 is vertically installed on the bottom support seat 100. A guide hole is opened on the guide plate 840, and the guide screw 850 passes through the guide hole; the first adjusting nut 861 is sleeved on the side of the guide screw 850 away from the front pressure plate 820, and the second adjusting nut 862 is sleeved on the side of the guide screw 850 close to the front pressure plate 820; the adjusting spring 870 is sleeved on the guide screw 850 between the second adjusting nut 862 and the rear pressure plate 830.

[0058] The traction rope 810 is located between the front pressure plate 820 and the rear pressure plate 830. The front pressure plate 820 and the rear pressure plate 830 respectively generate friction with the two sides of the traction rope 810 to prevent the traction rope 810 from sliding. The position of the rear pressure plate 830 can be adjusted by screwing the first adjustment nut 861. The squeezing amount of the adjustment spring 870 can be changed by screwing the second adjustment nut 862, thereby controlling the elastic force of the adjustment spring 870 and controlling the ability of the rear pressure plate 830 to move backward.

[0059] The positions of the first adjusting nut 861 and the second adjusting nut 862 are adjusted according to the weight of the items on the upper support seat 200, and the blocking force that blocks the sliding of the traction rope 810 is adjusted to the best. On the one hand, the rolling amplitude of the spherical support body 300 can be controlled so that the swing amplitude of the upper support seat 200 will not become larger and larger; on the other hand, after the earthquake ends, the upper support seat 200 can stop swinging as soon as possible, so that the spherical support body 300 can be reset as soon as possible.

[0060] In some specific embodiments, a wear-resistant plate 880 is installed on the front pressure plate 820 and / or the rear pressure plate 830. The wear-resistant plate 880 is made of a material with good wear resistance to improve its wear resistance and extend its service life.

[0061] In some specific embodiments, the middle part of the traction rope 810 is disconnected and connected with a sliding sheet 890, and the opposite sides of the sliding sheet 890 are in sliding contact with the front pressure plate 820 and the rear pressure plate 830 respectively. Specifically, end plates are vertically provided at both ends of the sliding sheet 890, and plate holes are opened on the end plates, and the traction rope 810 is fixed at the plate holes. By providing the sliding sheet 890, the contact surface between the sliding sheet 890 and the front pressure plate 820 and the rear pressure plate 830 is larger, and the blocking effect is better; the contact surface between the sliding sheet 890 and the front pressure plate 820 and the rear pressure plate 830 will also be more fitted, the sliding process will be smoother, and the noise can be reduced at the same time. After the sliding sheet 890 is damaged, only the sliding sheet 890 needs to be replaced, which can extend the service life of the traction rope 810.

[0062] In some specific embodiments, guide pulleys 900 are respectively installed on the bottom support seat 100 and the upper support seat 200, and the traction rope 810 passes over the guide pulleys 900 so that the part of the traction rope 810 close to the first slider 720 / the second slider 750 is parallel to the first guide rail 710 / the second guide rail 740. Taking the guide pulley 900 on the bottom support seat 100 as an example, for example, there are four guide pulleys 900, which are respectively installed at the two ends of the first guide rail 710 and the two corners of the bottom support seat 100. The traction rope 810 wrapped around the four guide pulleys 900 is rectangular as a whole, so that the traction rope 810 close to the first slider 720 remains parallel to the first guide rail 710. In this way, when the first slider 720 and the first guide rail 710 slide relative to each other, the force of the traction rope 810 on the slider is also along the direction of the first guide rail 710. In this way, the traction rope 810 will not generate forces in other directions on the first slider 720, thereby reducing the side wear of the first slider 720 and the first guide rail 710, and maintaining smooth sliding between the first slider 720 and the first guide rail 710.

[0063] The seismic isolation platform of the present application has the following beneficial effects:

[0064] 1. Improving seismic isolation effect: by configuring a plurality of spherical support bodies 300, the spherical support bodies 300 roll in the first groove 110 and the second groove 210 to effectively disperse the energy of seismic waves, thereby maintaining stable support for objects on the platform.

[0065] 2. Adjustable seismic isolation damping: The damping size can be adjusted according to different products or equipment (mass, shape). Compared with traditional seismic isolation systems, this platform can provide more efficient seismic isolation protection, effectively reduce the potential damage to products or equipment caused by earthquake fluctuations, and ensure the safety of products or equipment during earthquakes;

[0066] 3. Enhanced stability: The platform uses a spherical rolling support structure and the principle of gravity to provide more stable support when an earthquake occurs, reduce the displacement and tilt of the product cabinet, and further protect the safety of the product;

[0067] 4. Simplify maintenance work: The pure mechanical structure design is adopted, making full use of the spherical support body 300 rolling support and gravity principle, making the maintenance and maintenance process of the platform simpler and more convenient. It reduces the maintenance frequency and complexity, thereby reducing long-term maintenance costs and improving the reliability and ease of use of the system;

[0068] 5. Expand the scope of application: It is suitable for places that require high-level earthquake protection, such as museums' cultural relics display cabinets, storage cabinets, laboratories, important infrastructure, etc. This makes the seismic isolation platform of this application have a wide range of application prospects and market potential.

[0069] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A seismic isolation platform, characterized in that: include: A bottom support seat, wherein the upper end surface of the bottom support seat is formed with a plurality of first grooves; An upper support seat, located above the bottom support seat, a plurality of second grooves are formed on the lower end surface of the upper support seat, the first grooves and the second grooves are spherical grooves, and the first grooves and the second grooves are arranged in a one-to-one correspondence; There are multiple spherical support bodies, which are respectively located between the first groove and the second groove that are relatively arranged, and can cause the upper support seat and the bottom support seat to swing relative to each other by rolling in the first groove and the second groove.

2. The seismic isolation platform according to claim 1, characterized in that: Also includes: A connecting plate, located between the bottom support seat and the upper support seat, wherein the connecting plate is provided with holes at positions corresponding to the spherical support bodies; A limit seat is installed at the through hole, the inner wall of the limit seat is a spherical surface matched with the spherical support body, and a ball is arranged between the inner wall of the limit seat and the spherical support body.

3. The seismic isolation platform according to claim 1 or 2, characterized in that: Also includes: A first guide rail, disposed on the bottom support seat; A first sliding block is slidably matched with the first guide rail, and a convex ring is provided on the upper end surface of the first sliding block; A second guide rail is disposed on the upper support seat, wherein the length direction of the second guide rail is perpendicular to the length direction of the first guide rail; The second sliding block is slidably matched with the second guide rail, and a convex shaft is provided on the lower end surface of the second sliding block, and the convex shaft is gap-matched with the convex ring.

4. The seismic isolation platform according to claim 3, characterized in that: The bottom support seat and the upper support seat are respectively provided with a damping adjustment mechanism, and the damping adjustment mechanism comprises: A traction rope, wherein the free ends of the traction rope are respectively connected to the opposite ends of the first slider / the second slider; A friction component is in sliding contact with the middle portion of the traction rope, and the friction component prevents the traction rope from sliding by generating friction with the traction rope.

5. The seismic isolation platform according to claim 4, characterized in that: The friction assembly includes a front pressure plate and a rear pressure plate, the front pressure plate and the rear pressure plate are installed on the bottom support seat / the upper support seat, the gap between the front pressure plate and the rear pressure plate is adjustable, and the traction rope is located between the front pressure plate and the rear pressure plate.

6. The seismic isolation platform according to claim 5, characterized in that: The friction assembly also includes: A guide plate, the guide plate is mounted on the bottom support seat / the upper support seat, and a guide hole is formed on the guide plate; A guide screw, one end of which is connected to the rear pressure plate and the other end of which passes through the guide hole; A first adjusting nut, sleeved on a side of the guide screw away from the front pressure plate; A second adjusting nut is sleeved on a side of the guide screw close to the front pressure plate; An adjusting spring is sleeved on the guide screw between the second adjusting nut and the rear pressure plate.

7. The seismic isolation platform according to claim 5, characterized in that: The friction assembly further comprises a wear-resistant plate, and the wear-resistant plate is arranged on the front pressure plate and / or the rear pressure plate.

8. The seismic isolation platform according to claim 5, characterized in that: The middle part of the traction rope is disconnected and connected with a sliding sheet, and opposite sides of the sliding sheet are in sliding contact with the front pressure plate and the rear pressure plate respectively.

9. The seismic isolation platform according to claim 4, characterized in that: Guide pulleys are installed on the bottom support seat and the upper support seat respectively. The traction cable is passed around the guide pulleys so that the portion of the traction cable close to the first slider / the second slider is parallel to the first guide rail / the second guide rail.

10. The seismic isolation platform according to claim 3, characterized in that: A bearing is sleeved on the convex shaft, and a gap is provided between the outer ring of the bearing and the inner wall of the convex ring.

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