Multi-bead combined positioning shock insulation platform

Abstract

The utility model relates to the technical field of damping devices, in particular to a multi-bead combined positioning shock insulation platform which comprises a bottom supporting seat, an upper supporting seat and a spherical supporting body, and a plurality of first grooves are formed in the upper end face of the bottom supporting seat; the upper supporting seat is located above the bottom supporting seat, a plurality of second grooves are formed in the lower end face of the upper supporting seat, the first grooves and the second grooves are spherical grooves respectively, and the first grooves and the second grooves are oppositely arranged in a one-to-one correspondence mode; the multiple spherical supporting bodies are located between the first groove and the second groove which are oppositely arranged, and the spherical supporting bodies can roll in the first groove and the second groove so that the upper supporting base and the bottom supporting base can swing relatively. When an earthquake occurs, energy of earthquake waves can be effectively dispersed, and therefore stable supporting of objects on the platform is kept. Damping can be adjusted according to different products or equipment, potential damage of earthquake fluctuation to the products or the equipment is effectively reduced, and safety of the products or the equipment in an earthquake is guaranteed.

Description

Technical Field

[0001] This application relates to the field of vibration damping device technology, and in particular to a multi-bead combined positioning vibration isolation platform. Background Technology

[0002] Currently, seismic isolation platforms mainly rely on rubber pads, spring structures, or single spherical isolation devices to achieve seismic resistance. While these devices can mitigate earthquake vibrations to some extent, they also have drawbacks such as limited damping effect, insufficient stability, inability to adjust seismic damping, and difficulty in later maintenance. Furthermore, springs have a decay period, which can lead to breakage. Utility Model Content

[0003] This application provides a multi-bead combined positioning seismic isolation platform to solve the problems of limited damping effect, insufficient stability, inability to adjust seismic damping effect, and difficulty in later maintenance of existing seismic isolation platforms.

[0004] This application provides a multi-bead combined positioning and seismic isolation platform, comprising:

[0005] The bottom support base has multiple first grooves formed on its upper end surface;

[0006] The upper support is located above the lower support. The lower end face of the upper support has a plurality of second grooves. The first groove and the second groove are spherical grooves, and the first groove and the second groove are arranged opposite each other in a one-to-one correspondence.

[0007] Multiple spherical supports are located between a first groove and a second groove that are arranged opposite to each other. The upper support and the lower support can swing relative to each other by rolling in the first groove and the second groove.

[0008] In one possible design, the multi-bead combined positioning and isolation platform also includes:

[0009] A connecting plate is located between the bottom support and the upper support, and perforations are made on the connecting plate at the positions corresponding to the spherical support.

[0010] The limiting seat is installed at the perforation. The inner wall of the limiting seat is a spherical surface that matches the spherical support. Ball bearings are provided between the inner wall of the limiting seat and the spherical support.

[0011] In one possible design, the multi-bead combined positioning and isolation platform also includes:

[0012] The first guide rail is mounted on the bottom support base;

[0013] The first slider slides in conjunction with the first guide rail, and a convex ring is provided on the upper end face of the first slider;

[0014] The second guide rail is mounted on the upper support base, and the length direction of the second guide rail is perpendicular to the length direction of the first guide rail.

[0015] The second slider slides with the second guide rail, and a convex shaft is provided on the lower end face of the second slider, with the convex shaft and the convex ring in clearance fit.

[0016] In one possible design, damping adjustment mechanisms are respectively provided on the bottom support and the upper support. The damping adjustment mechanisms include:

[0017] The traction cable has its free end connected to the opposite ends of the first slider / second slider, respectively.

[0018] The friction assembly slides in contact with the middle of the traction cable, and the friction assembly prevents the traction cable from sliding by generating friction with the traction cable.

[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 / upper support. The gap between the front pressure plate and the rear pressure plate is adjustable, and the traction cable is located between the front pressure plate and the rear pressure plate.

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

[0021] Guide plate, the guide plate is installed on the bottom support / upper support, and the guide plate is provided with guide holes;

[0022] The guide screw is connected to the rear pressure plate at one end and passes through the guide hole at the other end;

[0023] The first adjusting nut is fitted onto the side of the guide screw away from the front pressure plate;

[0024] The second adjusting nut is fitted onto the guide screw on the side near the front pressure plate;

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

[0026] In one possible design, the friction assembly also includes a wear plate disposed on the front pressure plate and / or the rear pressure plate.

[0027] In one possible design, the middle of the traction cable is broken and connected to a sliding plate, with the opposite sides of the sliding plate making sliding contact with the front pressure plate and the rear pressure plate, respectively.

[0028] In one possible design, guide pulleys are installed on the bottom support and the upper support respectively, and the traction cable passes over the guide pulleys so that the part of the traction cable near the first slider / second slider is parallel to the first guide rail / second guide rail.

[0029] In one possible design, a bearing is fitted onto the cam shaft, with a gap between the outer ring of the bearing and the inner wall of the cam ring.

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

[0031] The multi-bead combination positioning and seismic isolation platform of this application, by setting multiple spherical supports, effectively disperses the energy of seismic waves by rolling the spherical supports in the first and second grooves during an earthquake, thereby maintaining stable support for objects on the platform.

[0032] By setting up a damping adjustment mechanism, the damping magnitude 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 of seismic fluctuations to products or equipment, and ensure the safety of products or equipment during earthquakes. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 A perspective view of the multi-bead combined positioning and seismic isolation platform provided in an embodiment of this application;

[0035] Figure 2 A top view of the multi-bead combined positioning and seismic isolation platform provided in an embodiment of this application;

[0036] Figure 3 This is a front view of the multi-bead combined positioning and seismic isolation platform provided in an embodiment of this application;

[0037] Figure 4 A side view of the multi-bead combined positioning and seismic isolation platform provided in an embodiment of this application;

[0038] Figure 5 A cross-sectional view of AA of the multi-bead combined positioning and seismic isolation platform provided in the embodiments of this application;

[0039] Figure 6 for Figure 5 A schematic diagram of a local structure in the image;

[0040] Figure 7 A cross-sectional view of the BB of the multi-bead combined positioning and seismic isolation platform provided in the embodiments of this application;

[0041] Figure 8 A cross-sectional view of the CC of the multi-bead combined positioning and seismic isolation platform provided in the embodiments of this application;

[0042] Figure 9A cross-sectional view of the multi-bead combined positioning and seismic isolation platform provided in the embodiments of this application;

[0043] Figure label:

[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. Limiting seat; 510. First support seat; 520. Second support seat; 600. Ball bearing; 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 cable; 820. Front pressure plate; 830. Rear pressure plate; 840. Guide plate; 850. Guide screw; 861. First adjusting nut; 862. Second adjusting nut; 870. Adjusting spring; 880. Wear-resistant plate; 890. Sliding piece; 900. Guide pulley. Detailed Implementation

[0045] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] The following is combined with Figures 1-9 This describes the multi-bead combined positioning and seismic isolation platform provided in the embodiments of this application.

[0047] Reference Figures 1-5 As shown, the multi-bead combined positioning and vibration isolation platform provided in this embodiment includes a bottom support 100, an upper support 200, and a spherical support 300. A chassis 130 is installed at the lower end of the bottom support 100, and the upper support 200 is located above the bottom support 100. The bottom support 100 and the upper support 200 can be square or circular. The upper surface of the upper support 200 is flat and used to place items. Specifically, the upper surface of the bottom support 100 has a plurality of first grooves 110, and the lower surface of the upper support 200 has a plurality of second grooves 210. The first grooves 110 and the second grooves 210 are spherical grooves. In this embodiment, four first grooves 110 are respectively opened at the positions near the corners of the bottom support 100; four second grooves 210 are respectively opened at the positions near the corners of the upper support 200. The first grooves 110 and the second grooves 210 are arranged opposite each other in a one-to-one correspondence, thereby forming four sets of first grooves 110 and second grooves 210.

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

[0049] Reference Figure 5 , Figure 6 As shown, the multi-bead combination positioning and seismic isolation platform also includes a connecting plate 400, a limiting seat 500, and ball bearings 600. The connecting plate 400 is located between the bottom support 100 and the upper support 200. Perforations are formed on the connecting plate 400 at positions corresponding to the spherical support 300, allowing the spherical support 300 to be positioned within the perforations. A limiting seat 500 is installed at each perforation. The inner wall of the limiting seat 500 is a spherical surface that mates with the spherical support 300. Ball bearings 600 are positioned between the inner wall of the limiting seat 500 and the spherical support 300. Specifically, the limiting seat 500 includes a first support 510 and a second support 520. The first support 510 and the second support 520 are annular seats. The outer walls of the first support 510 and the second support 520 are respectively provided with protruding edges, and mounting holes are opened on the protruding edges. The inner walls of the first support 510 and the second support 520 are respectively spherical surfaces. After the first support 510 is placed on top of the second support 520 and installed on the connecting plate 400 with bolts, the inner walls of the first support 510 and the second support 520 together form a spherical surface that matches the outer wall surface of the spherical support 300. The ball bearing 600 is disposed between the inner walls of the first support 510 and the second support 520 and the spherical support 300, so that the spherical support 300 can roll freely within the limiting seat 500.

[0050] If the chassis 130 is not installed level, causing the centers of the spherical supports 300 to be not on the same horizontal plane, one or more of the spherical supports 300 may shift during an earthquake. The shifted spherical supports 300 will not move with the bottom support 100 and the upper support 200, resulting in inaccurate positioning. Meanwhile, the remaining spherical supports 300 continue to operate, causing their travel range to gradually decrease until they eventually jam, leading to the tipping of items on the upper support 200. This application, through the structure of the connecting plate 400, effectively avoids the problem of one or more spherical supports 300 shifting, causing the travel range of the other spherical supports 300 to gradually decrease, ultimately leading to the tipping of the artifact storage equipment.

[0051] Reference Figure 7As shown, the multi-bead combination positioning and vibration 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 disposed on the bottom support 100 and is disposed along the length direction of the bottom support 100. The first slider 720 is slidably engaged with the first guide rail 710, and a protruding ring 730 is provided on the upper end surface of the first slider 720. The second guide rail 740 is mounted on the upper support 200, and is arranged along the width direction of the upper support 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 engaged with the second guide rail 740. A convex shaft 760 is provided on the lower end face of the second slider 750. The convex shaft 760 and the convex ring 730 are coaxially arranged, and their central axis is consistent with the height direction of the multi-bead combination positioning and vibration 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 300 rolls, the convex shaft 760 and the convex ring 730 can rotate and move axially. In this way, by setting the guide rail and slider structure, the motion is decomposed into linear motion and rotation in two mutually perpendicular directions. By utilizing the friction of the guide rail and slider itself, the rolling amplitude of the spherical support 300 can be controlled, so that the upper support 200 does not swing too much.

[0052] To accommodate the cam shaft 760 and cam ring 730, a clearance hole is provided in the center of the connecting plate 400.

[0053] In some specific embodiments, a bearing 770 is fitted onto the convex shaft 760, and there is a gap between the outer ring of the bearing 770 and the inner wall of the convex ring 730. This prevents the convex shaft 760 and the convex ring 730 from rotating relative to each other, thus avoiding the problem of rotational jamming caused by contact between the inner wall of the convex ring 730 and the outer wall of the convex shaft 760. Simultaneously, because there is a gap between the outer ring of the bearing 770 and the inner wall of the convex ring 730, it does not affect the axial relative movement between the convex shaft 760 and the convex ring 730.

[0054] Reference Figure 8 , Figure 9 As shown, damping adjustment mechanisms 800 are respectively provided on the bottom support 100 and the upper support 200. Since the damping adjustment mechanism 800 on the upper support 200 and the damping adjustment mechanism 800 on the bottom support 100 have the same structure, the damping adjustment mechanism 800 on the bottom support 100 will be used as an example for explanation here.

[0055] The damping adjustment mechanism 800 includes a traction cable 810 and a friction assembly. The traction cable 810 can be a steel wire rope and has two free ends. One free end is connected to one end of the first slider 720 via a steel wire rope joint, and the other free end is connected to the opposite end of the first slider 720 via a steel wire rope joint. The friction assembly slides in contact with the middle of the traction cable 810, and the friction assembly resists the sliding of the traction cable 810 by generating friction with it.

[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 100. 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 100. One side of the front pressure plate 820 is provided with a horizontal post and a threaded hole. The horizontal post passes through a through hole in the edge of the bottom support 100. A nut is also welded to the edge of the bottom support 100. A stud passes through the nut and enters the threaded hole of the front pressure plate 820. By turning the stud, 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. The guide plate 840 is vertically installed on the bottom support 100. A guide hole is provided 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 cable 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 resist the sliding of the traction cable 810 by generating friction with both sides of the traction cable 810. The position of the rear pressure plate 830 can be adjusted by turning the first adjusting nut 861. The compression amount of the adjusting spring 870 can be changed by turning the second adjusting nut 862, thereby controlling the elastic force of the adjusting 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 200, so as to optimize the resistance force that prevents the traction cable 810 from sliding. On the one hand, it can control the rolling amplitude of the spherical support 300, so that the swing amplitude of the upper support 200 does not swing too much; on the other hand, it can stop the swing of the upper support 200 as soon as possible after the earthquake, and allow the spherical support 300 to return to its original position as soon as possible.

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

[0061] In some specific embodiments, the traction cable 810 is disconnected at the middle and connected to a sliding plate 890. The opposite sides of the sliding plate 890 slide in contact with the front pressure plate 820 and the rear pressure plate 830, respectively. Specifically, each end of the sliding plate 890 has a vertically arranged end plate with a hole, and the traction cable 810 is fixed to the hole. By providing the sliding plate 890, the contact surface between the sliding plate 890 and the front pressure plate 820 and the rear pressure plate 830 is larger, resulting in better resistance; the contact surface between the sliding plate 890 and the front pressure plate 820 and the rear pressure plate 830 is also more closely fitted, making the sliding process smoother and reducing noise. When the sliding plate 890 is damaged, only the sliding plate 890 needs to be replaced, which can extend the service life of the traction cable 810.

[0062] In some specific embodiments, guide pulleys 900 are respectively installed on the bottom support 100 and the upper support 200, and the traction cable 810 passes over the guide pulleys 900 so that the part of the traction cable 810 near the first slider 720 / second slider 750 is parallel to the first guide rail 710 / second guide rail 740. Taking the guide pulleys 900 on the bottom support 100 as an example, for instance, there are four guide pulleys 900, which are respectively installed at both ends of the first guide rail 710 and at the two corners of the bottom support 100. The traction cable 810 wrapped around the four guide pulleys 900 is generally rectangular, so that the traction cable 810 near the first slider 720 is parallel to the first guide rail 710. In this way, when the first slider 720 slides relative to the first guide rail 710, the force of the traction cable 810 on the slider is also along the direction of the first guide rail 710. Thus, the traction cable 810 will not exert force on the first slider 720 in other directions, 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 multi-bead combined positioning and seismic isolation platform of this application has the following beneficial effects:

[0064] 1. Improve seismic isolation effect: By configuring multiple spherical supports 300, the energy of seismic waves can be effectively dispersed by the principle of the spherical supports 300 rolling in the first groove 110 and the second groove 210, thereby maintaining stable support for objects on the platform.

[0065] 2. Adjustable seismic isolation damping: The damping 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 of seismic fluctuations to products or equipment, and ensure the safety of products or equipment during earthquakes.

[0066] 3. Enhanced stability: This platform utilizes a spherical rolling support structure and the principle of gravity to provide more stable support during earthquakes, reducing the displacement and tilting of product cabinets and further protecting product safety;

[0067] 4. Simplified Maintenance: Utilizing a purely mechanical structure design and fully leveraging the 300° rolling support of the spherical support body and the principle of gravity, the platform's maintenance and upkeep are simpler and more convenient. This reduces maintenance frequency and complexity, thereby lowering long-term maintenance costs and improving system reliability and ease of use.

[0068] 5. Expanded application scope: Suitable for locations requiring high levels of seismic protection, such as museum artifact display cases, storage cabinets, laboratories, and critical infrastructure. This gives the multi-bead combination positioning seismic isolation platform of this application broad application prospects and market potential.

[0069] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 this application.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0072] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A multi-bead combined positioning and seismic isolation platform, characterized in that, include: Chassis; A bottom support base is fixed on the chassis, and a plurality of first grooves are formed on its upper end surface; An upper support base is located above the bottom support base. The lower end surface of the upper support base has a plurality of second grooves. The first groove and the second groove are spherical grooves. The first groove and the second groove are arranged opposite each other in a one-to-one correspondence. Multiple spherical supports are located between the first and second grooves, which are arranged opposite to each other. The upper support and the bottom support can swing relative to each other by rolling in the first and second grooves.

2. The multi-bead combined positioning and seismic isolation platform according to claim 1, characterized in that, Also includes: A connecting plate is located between the bottom support and the upper support, and through holes are respectively opened on the connecting plate at the positions corresponding to the spherical support; A limiting seat is installed at the through hole. The inner wall of the limiting seat is a spherical surface that mates with the spherical support. A ball bearing is provided between the inner wall of the limiting seat and the spherical support.

3. The multi-bead combined positioning and seismic isolation platform according to claim 1 or 2, characterized in that, Also includes: The first guide rail is mounted on the bottom support base; The first slider slides in conjunction with the first guide rail, and a convex ring is provided on the upper end face of the first slider; The second guide rail is disposed on the upper support base, and the length direction of the second guide rail is perpendicular to the length direction of the first guide rail; The second slider slides in conjunction with the second guide rail, and a convex shaft is provided on the lower end face of the second slider, the convex shaft being in clearance fit with the convex ring.

4. The multi-bead combined positioning and seismic isolation platform according to claim 3, characterized in that, The bottom support and the upper support are respectively provided with damping adjustment mechanisms, and the damping adjustment mechanisms include: A traction cable, the free end of which is connected to the opposite ends of the first slider / the second slider respectively; The friction assembly slides in contact with the middle of the traction cable, and the friction assembly resists the sliding of the traction cable by generating friction with the traction cable.

5. The multi-bead combined positioning and seismic isolation platform according to claim 4, characterized in that: The friction assembly includes a front pressure plate and a rear pressure plate, which are mounted on the bottom support / upper support. The gap between the front pressure plate and the rear pressure plate is adjustable, and the traction cable is located between the front pressure plate and the rear pressure plate.

6. The multi-bead combined positioning and seismic isolation platform according to claim 5, characterized in that, The friction assembly also includes: A guide plate is mounted on the bottom support / upper support, and a guide hole is provided on the guide plate; The guide screw has one end connected to the rear pressure plate and the other end passing through the guide hole; The first adjusting nut is sleeved on the side of the guide screw away from the front pressure plate; The second adjusting nut is sleeved on the side of the guide screw near the front pressure plate; An adjusting spring is fitted onto the guide screw between the second adjusting nut and the rear pressure plate.

7. The multi-bead combined positioning and seismic isolation platform according to claim 5, characterized in that: The friction assembly further includes a wear-resistant plate, which is disposed on the front pressure plate and / or the rear pressure plate.

8. The multi-bead combined positioning and seismic isolation platform according to claim 5, characterized in that: The traction cable is disconnected at the middle and connected to a sliding plate. The opposite sides of the sliding plate are in sliding contact with the front pressure plate and the rear pressure plate, respectively.

9. The multi-bead combined positioning and seismic isolation platform according to claim 4, characterized in that: Guide pulleys are respectively installed on the bottom support and the upper support. The traction cable passes over the guide pulleys so that the portion of the traction cable near the first slider / second slider is parallel to the first guide rail / second guide rail.

10. The multi-bead combined positioning and seismic isolation platform according to claim 3, characterized in that: A bearing is fitted onto the convex shaft, and there is a gap between the outer ring of the bearing and the inner wall of the convex ring.

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