A self-resetting seismic isolation joint cover plate device

Abstract

The present invention discloses a self-resetting seismic isolation joint cover plate device, which includes a steel box, a self-resetting assembly and a steel cover plate. The self-resetting assembly further includes a pair of steel connecting rods, steel support rods and reset springs. The steel boxes are oppositely arranged on both sides of the seismic isolation joint or seismic isolation trench. The reset springs are sleeved on the steel support rods in a free elongation state. The pair of steel connecting rods are obliquely and symmetrically arranged, and one end of each of them is connected to the steel support rod through a movable part. The two ends of the steel support rod can slide through the interiors of the oppositely arranged steel boxes. The steel cover plate is located above the steel box, and its lower part is movably connected to the other ends of the obliquely and symmetrically arranged steel connecting rods. When the width of the seismic isolation joint or seismic isolation trench is compressed, the steel connecting rods provide vertical bearing capacity to lift the steel cover plate. When the width of the seismic isolation joint or seismic isolation trench is widened, the reset springs provide tensile force to automatically reset the steel cover plate through the steel connecting rods. When the width of the seismic isolation joint or seismic isolation trench continues to be widened by a large distance, it will not continue to sink. The above process ensures that the seismic isolation building can freely displace and self-reset.

Description

Technical Field

[0001] The present invention relates to the technical field of seismic resistance of building structures, and particularly to a self-resetting seismic isolation joint cover device. Background Art

[0002] Earthquake disasters have shown that the main reasons for casualties and economic losses caused by earthquakes are the collapse and damage of buildings. The use of seismic isolation technology is one of the most effective technologies to enhance the seismic performance of building structures and reduce earthquake disasters at present. In buildings using seismic isolation technology, the reserved space of seismic isolation joints or seismic isolation trenches is used to ensure the normal function of seismic isolation buildings during earthquakes. However, from past earthquake disasters, it has been found that there are many problems in the seismic isolation joints or seismic isolation trenches and their covers in seismic isolation buildings, especially in seismic isolation buildings in medium and high-intensity earthquake areas, which affect the normal performance of the seismic isolation structure.

[0003] First, at present, due to the large width of the seismic isolation trench or seismic isolation joint, the vertical bearing capacity of its sliding cover plate is insufficient. At present, there is no special set of drawings for the covers of seismic isolation joints or seismic isolation trenches for designers to choose from, and only the current building deformation joint drawings can be applied. However, the maximum joint width applicable to the building deformation joint drawings is only 300 mm, but the width of the seismic isolation joints or seismic isolation trenches in seismic isolation buildings in medium and high-intensity earthquake areas even reaches 800 mm or more. When designing, applying the building deformation drawings or using them after self-modification will result in the problem that the vertical bearing capacity of the covers of seismic isolation joints or seismic isolation trenches is insufficient due to the increased span.

[0004] Second, there is a situation where the seismic isolation joint or seismic isolation trench is blocked during an earthquake and the cover plate cannot move freely, resulting in the inability of the seismic isolation layer of the seismic isolation structure to deform normally, and thus damage and destruction of the upper structure.

[0005] Third, there is a situation where the cover plate of the seismic isolation joint or seismic isolation trench cannot automatically reset due to damage to the cover plate or other components during or after an earthquake, which affects the timely escape of personnel.

[0006] Therefore, in view of the above problems, it is necessary to develop a seismic isolation joint or seismic isolation trench cover device that can be applied to a large range of joint widths, has a large bearing capacity, can move freely, and can automatically reset. Summary of the Invention

[0007] The purpose of the present invention is to provide a self-resetting seismic isolation joint cover device, which provides vertical bearing capacity for the steel cover plate at a large joint width through the obliquely crossed steel connecting rods arranged on the self-resetting component and provides a resetting force through the reset springs on the steel support rods arranged between the steel boxes, so that the seismic isolation joint can automatically reset during an earthquake.

[0008] To achieve the above technical purpose, the present application provides a self-resetting seismic isolation joint cover device, including:

[0009] Steel boxes, the steel boxes are arranged relatively on both sides of the seismic isolation joint;

[0010] An autonomous reset component, the autonomous reset component comprises a steel connecting rod, a steel support rod and a reset spring arranged in pairs, the reset spring is sleeved on the steel support rod in a freely extended state and is located between the steel connecting rods arranged in pairs, the steel connecting rods arranged in pairs are arranged obliquely and symmetrically and one end of each of the steel connecting rods is connected to the steel support rod through a movable part, the movable part can slide on the steel support rod, and the two ends of the steel support rod can slide and shuttle inside the relatively arranged steel box;

[0011] The steel cover plate is located at the seismic isolation joint and the upper part of the steel box, and the lower part of the steel cover plate is movably connected to the other end of the steel connecting rod arranged in an oblique and symmetrical manner.

[0012] When the self-resetting seismic isolation seam cover device provided by the present invention is in use, a reset force is provided by a reset spring in a self-resetting assembly, so that the reset spring is in a compressed state when the seismic isolation seam or seismic isolation groove is squeezed, and the steel cover is lifted up and fixed by a steel connecting rod. When the width of the seismic isolation seam or seismic isolation groove is pulled open and returned to the initial state, the reset spring begins to extend, and the steel cover is pulled down and fixed by the steel connecting rod. When the width of the seismic isolation seam or seismic isolation groove continues to be pulled open to twice the initial state, the reset spring is in a freely extended state, and the steel cover is lifted up and fixed by the steel connecting rod and will not continue to sink.

[0013] In summary, the self-resetting seismic isolation joint cover device provided by the present invention can provide vertical bearing capacity when the joint width is large and can be freely displaced and automatically reset, thereby improving the seismic performance of the building structure.

[0014] In the above description, as a preferred solution, the upper side of the symmetrically arranged steel box is provided with a chamfer for passing the steel connecting rod, so as to prevent the steel connecting rod from being blocked by the steel box and damaged when pushing up the steel cover plate.

[0015] In the above description, as a preferred solution, the transverse width of the steel box is greater than half the length of the steel support rod, ensuring that there is enough space for the steel support rod to shuttle inside the steel box.

[0016] In the above description, as a preferred solution, a slide groove is provided in the middle part of the relatively arranged steel boxes for allowing the self-resetting assembly to slide forward and backward, so that the seismic isolation building can move freely forward and backward during an earthquake, thereby avoiding the cover plate being blocked and unable to shift freely, resulting in the seismic isolation layer of the seismic isolation structure not being able to deform normally, thereby causing damage and destruction to the upper structure.

[0017] In the above description, as a preferred solution, the two sides of the steel cover plate are upwardly curved, and the top of the symmetrically arranged steel box is provided with an arc-shaped steel cover plate sliding seat matching the two sides of the upwardly curved steel cover plate, so that the steel cover plate can slide smoothly out of the building level when it is lifted up.

[0018] In the above description, as a preferred solution, elastic glue for sealing the gap is arranged between the two sides of the steel cover plate and the arc-shaped steel cover plate sliding seat to prevent debris from falling into the gap and causing the steel cover plate to be unable to slide out of the building layer smoothly when it is lifted up.

[0019] In the above description, as a preferred solution, the steel cover plate and the steel connecting rod are hinged through a steel ear plate arranged at the lower part of the steel cover plate, and the steel support rod and the steel connecting rod are hinged through a first spring clip arranged on the steel support rod, thereby further improving the free displacement ability of the steel cover plate during rising and falling.

[0020] In the above description, as a preferred scheme, the return spring includes a middle return spring and two side return springs, and a second spring clip is arranged on the steel support rod. The second spring clips are arranged in pairs and are symmetrical about the center of the steel support rod. The middle return spring is located between the first spring clips, and the two side return springs are arranged in pairs between the first spring clips and the second spring clips, thereby further improving the resetting ability of the autonomous return assembly.

[0021] In the above description, as a preferred solution, a limiting portion for fixing an intermediate return spring is provided at the center position of the steel support rod to keep the steel cover plate from freely deviating and to always cover the seam width.

[0022] In the above description, as a preferred solution, the steel support rod is provided with a limiting portion for limiting the first spring clip and the second spring clip from sliding toward the steel box, so that when the width of the isolation joint or the isolation groove is large, the steel connecting rod can be limited by the limiting portion to ensure that the isolation building is supported and fixed and will not continue to sink, thereby ensuring the safety of the building.

[0023] It can be seen from the above technical scheme that the present invention provides an isolation joint cover device that can reset itself, including a steel box, an independent reset component and a steel cover. The independent reset component also includes steel connecting rods, steel support rods and reset springs arranged in pairs. The steel boxes are relatively arranged on both sides of the isolation joint or isolation groove. The reset spring is sleeved on the steel support rod in a freely extended state and is located between the steel connecting rods arranged in pairs. The reset springs on the steel support rods arranged between the steel boxes provide a reset force so that the isolation building can reset itself during an earthquake. The steel connecting rods arranged in pairs are obliquely symmetrically arranged and one end of each of the steel supporting rods is connected to the steel support rod by a movable part. The movable part can slide on the steel support rod, and the two ends of the steel support rod can slide and shuttle inside the relatively arranged steel box. The steel cover is located on the isolation joint and the upper part of the steel box, and its lower part is movably connected to the other end of the obliquely symmetrically arranged steel connecting rod. When the width of the isolation joint or isolation groove continues to be pulled apart by a large distance, the reset spring is in a freely extended state, and the steel connecting rod provides a vertical bearing force so that the steel cover is supported and fixed and will not continue to sink. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0025] Figure 1 Structural schematic diagram of the self-resetting seismic isolation joint cover device provided by the embodiment of the present application in the initial state;

[0026] Figure 2 is Figure 1 Partial enlarged structural schematic diagram in the A direction in;

[0027] Figure 3 Structural schematic diagram of the self-resetting component of the self-resetting seismic isolation joint cover device provided by the embodiment of the present application;

[0028] Figure 4 Structural schematic diagram of the first spring clip of the self-resetting seismic isolation joint cover device provided by the embodiment of the present application;

[0029] Figure 5 is Figure 3 Partial enlarged sectional structural schematic diagram of B of;

[0030] Figure 6 Structural schematic diagram of the self-resetting seismic isolation joint cover device provided by the embodiment of the present application when the width of the seismic isolation joint or seismic isolation trench is squeezed and narrowed;

[0031] Figure 7 Structural schematic diagram of the self-resetting seismic isolation joint cover device provided by the embodiment of the present application when the width of the seismic isolation joint or seismic isolation trench is stretched and lengthened.

[0032] Marks in the drawings and corresponding component names:

[0033] 1 - Building surface layer, 2 - Arc steel cover sliding seat, 3 - Elastic glue, 4 - Steel cover, 5 - Steel ear plate, 6 - Steel connecting rod, 7 - Steel box, 8 - Steel box clip, 9 - Limit nut, 10 - Limit clip, 11 - Steel support rod, 12 - Side reset springs, 13 - Intermediate reset spring, 14 - First spring clip, 15 - Second spring clip, 16 - Slide groove, 17 - Limit part. Detailed implementation manners

[0034] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0036] In the description of the embodiments of this application, the orientation or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships when the product of this application is normally placed, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing this application 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 construed as a limitation of this application.

[0037] In the description of this invention, unless otherwise clearly specified and limited, the terms "set", "provided with", "installed", "connected", "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this invention can be understood according to specific situations.

[0038] Embodiment 1

[0039] The embodiments of this application disclose a self-resetting seismic isolation joint cover plate device, which can be arranged in a seismic isolation joint or a seismic isolation trench. Please refer to Figure 1, the first embodiment of a self - resetting seismic joint cover device provided in the embodiments of the present application includes a steel box 7, a self - resetting component, and a steel cover plate 4. The self - resetting component further includes a pair of steel connecting rods 6, steel support rods 11, and a reset spring; the steel boxes 7 are oppositely arranged on both sides of the seismic joint or seismic trench. The sides and bottom surfaces of the steel boxes 7 are fixed to the building structure through a plurality of steel box fasteners 8, which are used to block the seismic joint or seismic trench between adjacent buildings. The upper surface of the steel box 7 is covered with a building surface layer 1; both ends of the steel support rod 11 can slide through the relatively arranged steel boxes 7. In this embodiment, it is achieved in the following way: both ends of the steel support rod 11 are located in the middle of the relatively arranged steel boxes 7 and pass through the chute 16 arranged in the middle of the steel box 7. As Figure 2 shown, the chute 16 is a rectangular slot, which is used for the seismic - isolated building to move freely back and forth in the plane shown in Figure 1 to avoid the cover plate being blocked and unable to move freely, resulting in the abnormal deformation of the seismic isolation layer of the seismic isolation structure, and thus causing damage and destruction to the upper structure. To prevent the steel support rod 11 from slipping out of the chute 16, a limit card 10 is provided at one end of the steel support rod 11 passing through the steel box 7. The limit card 10 is threadedly connected to one end of the steel support rod 11 through a limit nut 9 and fastened to the steel support rod 11, and the outer diameter of the limit card 10 is greater than the slot width of the chute 16, thereby preventing the steel support rod 11 from slipping out of the chute 16. To ensure that there is enough space for the steel support rod 11 to slide through the steel box 7, the lateral width of the steel box 7 is greater than half of the length of the steel support rod 11; as Figure 1 and Figure 3 shown, at the central position of the steel support rod 11, the reset spring is sleeved on it in a free - elongation state, located between the pair of steel connecting rods 6. The reset spring can provide a reset force so that the seismic joint or seismic trench can self - reset when subjected to earthquake extrusion. The pair of steel connecting rods 6 are arranged obliquely and symmetrically, and one end of each is connected to the steel support rod 11 through a movable part, and this movable part can slide on the steel support rod 11. When the width of the seismic joint or seismic trench continues to be pulled apart by a large distance, the reset spring is in a free - elongation state, and the steel connecting rod provides vertical bearing capacity to hold the steel cover plate in place and prevent it from sinking further; the above - mentioned movable part can be a slider, a sliding sleeve, or a clip with a hinge joint. In this embodiment, a clip with an ear - plate hinge joint is selected, such as Figure 4As shown, one end of the steel connecting rod 6 is hinged through the ear plate of the first spring clamp 14 arranged on the steel support rod 11, and the other end of the steel connecting rod 6 is hinged to the steel ear plate arranged at the lower part of the steel cover plate 4. The two ends of the obliquely symmetrically arranged steel connecting rod 6 are hinged to further improve the free displacement ability of the steel cover plate 4 when rising and falling. When the steel connecting rod 6 supports the steel cover plate 4 to rise and fall, it may be blocked by the edge of the steel box 7. To avoid this situation, a chamfer for passing the steel connecting rod 6 is provided on the upper side of the symmetrically arranged steel box 7; to further improve the resetting ability of the autonomous resetting component, the above-mentioned reset spring package The steel support rod 11 includes a middle return spring 13 and two side return springs 12. A second spring clamp 15 is arranged on the steel support rod 11. The second spring clamps 15 are arranged in pairs and are symmetrical about the center of the steel support rod 11. The middle return spring 13 is located between the first spring clamps 14. The two side return springs 12 are arranged in pairs and are located between the first spring clamps 14 and the second spring clamps 15. When the structures on both sides of the seismic isolation joint or seismic isolation groove move outward from the compressed state, the two side return springs 12 are relaxed, so that the steel cover plate 4 is gradually reset to the initial state; in order to further ensure that the steel cover plate 4 is supported and fixed and will not continue to sink, thereby improving the safety of the building, such as Figure 5 As shown, a limiting portion 17 is provided on the steel support rod 11 for limiting the first spring clip 14 and the second spring clip 15 from sliding toward the steel box. When the seismic isolation gap or seismic isolation groove expands further outward, the middle return spring 13 is limited by the limiting portions 17 on both sides at the middle position of the steel support rod 11 to keep the steel cover plate 4 from freely deviating and to cover the gap width all the time. In addition, in order to ensure that the steel cover plate 4 can slide out of the building layer 1 smoothly and smoothly when it is lifted up, the two sides of the steel cover plate 4 are upwardly curved, and arc-shaped steel cover plate sliding seats 2 matching the two sides of the upwardly curved steel cover plate 4 are provided on the top of the symmetrically arranged steel box 7. At the same time, there will be a gap between the two sides of the steel cover plate 4 and the arc-shaped steel cover plate sliding seats 2. In order to prevent debris from falling into the gap and causing the steel cover plate to fail to slide out of the building layer 1 smoothly and smoothly when it is lifted up, the gap is sealed by the elastic glue 3 provided.

[0040] In summary, the self-resetting seismic isolation joint cover plate device is arranged in the middle of the seismic isolation joint or seismic isolation trench, and includes a steel cover plate 4, a steel box 7 and a self-resetting component. The self-resetting component consists of a steel connecting rod 6, a steel support rod 11 and a reset spring; the reset spring includes a middle reset spring 13 and two side reset springs 12. The ends of the middle reset spring 13 and the two side reset springs 12 are provided with a first spring clip 14 and a second spring clip 15. The springs and clips are freely sleeved on the steel support rod 11 in a free state and are between the left and right steel boxes 7; two obliquely placed steel connecting rods 6 are arranged between the self-resetting component and the steel cover plate 4. The steel connecting rod 6 is hinged to the steel cover plate 4 through a steel ear plate 5 fixed to the bottom surface of the steel cover plate 4, and the steel connecting rod 6 is hinged to the first spring clip 14; limit clips 10 and limit nuts 9 are arranged at both ends of the steel support rod 11; the steel box 7 is fixed to both sides of the seismic isolation joint or seismic isolation trench through a steel box clip 8; a building surface layer 1 is arranged on the top of the steel cover plate 4. The two ends of the steel cover plate 4 are set as upwardly curved arcs. Arc-shaped steel cover plate sliding seats 2 are arranged on the tops of the steel boxes 7 on both sides of the seismic isolation joint or seismic isolation trench. An elastic rubber 3 with a sealing gap is arranged between the arc-shaped surface at the end of the steel cover plate 4 and the arc-shaped steel cover plate sliding seat 2. The steel cover plate 4 is ensured to freely shift and self-reset during an earthquake by the self-resetting component arranged between the steel boxes 7 and slidable by supporting in the chute 16 of the steel box 7. As Figure 1 shown, when there is no earthquake, the seismic isolation joint or seismic isolation trench remains in the initial set state (here, the initial set state can set the length of the steel support rod 11 according to the deformation requirements of the building to solve the problem of insufficient vertical bearing capacity when the width of the seismic joint exceeds 300 mm. It should be noted that this device is not only applicable to seismic joints with a width of more than 300 mm, but also applicable to seismic joints with a width of less than 300 mm), the joint width is the reserved width, the reset spring is in a free elongation state, the steel connecting rod 6 is restricted by the limiting part 17 to hold the steel cover plate 4 in place, the building surface layer 1 on the upper part of the steel cover plate 4 is on the same plane as the ground, the steel support rod 11 is symmetrically located in the center of the seismic isolation joint or seismic isolation trench, and both ends of the steel support rod 11 are in the middle of the steel box 7 and the chute 16 on the steel box 7; as Figure 6 shown, during an earthquake, when the width of the seismic isolation joint or seismic isolation trench is squeezed, the reset spring is in a compressed state, and the steel cover plate 4 is lifted by the steel connecting rod 6; when the width of the seismic isolation joint or seismic isolation trench is pulled apart and begins to return to the initial set state of the reset spring, as Figure 7 shown, the reset spring applies a restoring force to the steel connecting rod 6, the steel cover plate 4 is pulled back to its original position by the steel connecting rod 6, and the steel connecting rod 6 is restricted by the limiting part 17 again to hold the steel cover plate 4 in place; when the width of the seismic isolation joint or seismic isolation trench continues to be pulled apart to twice the initial set state, the reset spring is in a free elongation state, and the reset spring is restricted by the two side limiting parts 17 at the middle position of the steel support rod 11 to keep the steel cover plate 4 from freely shifting and always covering the joint width. The above process effectively solves the problems of insufficient vertical bearing capacity, inability to freely shift and inability to automatically reset when the width of the seismic isolation joint or seismic isolation trench in a seismically isolated building exceeds 300 mm.

[0041] Embodiment 2

[0042] Based on the technical solution in the above Embodiment 1, the difference lies in the different structure of the limiting part 17. As Figure 3 shown, a limiting part 17 is provided at the central position of the steel support rod 11, and the middle of the middle return spring 13 is fixed on the limiting part 17. In this embodiment, the middle return spring 13 can be cut from the middle and then the cut surface is welded and fixed to the two end faces of the limiting part 17, or a spring with a hook at one end can be selected and the hook is fixed to the limiting part 17. When the seismic isolation joint or seismic isolation trench is further expanded outwards, the middle return spring 13 is always fixed at the middle position of the steel support rod 11 by the limiting part 17, ensuring that the steel cover plate 4 does not shift freely and always covers the joint width, improving the safety of the building.

[0043] The specific embodiments described above have further elaborated on the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above description is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-resetting seismic isolation joint cover plate device, characterized in that, Including: Steel boxes (7), which are oppositely arranged on both sides of the seismic isolation joint; An automatic reset component, which includes paired steel connecting rods (6), steel support rods (11) and a reset spring. The reset spring is sleeved on the steel support rod (11) in a free elongation state and is located between the paired steel connecting rods (6). The paired steel connecting rods (6) are obliquely and symmetrically arranged, and one end of each is connected to the steel support rod (11) through a movable part. The movable part can slide on the steel support rod (11), and both ends of the steel support rod (11) can slide through the interior of the oppositely arranged steel boxes (7); A steel cover plate (4), which is located above the seismic isolation joint and the steel boxes (7). The lower part of the steel cover plate (4) is movably connected to the other ends of the obliquely and symmetrically arranged steel connecting rods (6).

2. The self-resetting seismic isolation joint cover plate device according to claim 1, characterized in that, A chamfer for passing the steel connecting rod (6) is provided on the upper side of the symmetrically arranged steel boxes (7).

3. The self-resetting seismic isolation joint cover plate device according to claim 1, characterized in that, The transverse width of the steel box (7) is greater than half of the length of the steel support rod (11).

4. A self-resetting seismic isolation joint cover plate device according to claim 1, characterized in that, A chute (16) for enabling the automatic reset component to slide back and forth is provided in the middle of the oppositely arranged steel boxes (7).

5. The self-resetting seismic isolation joint cover plate device according to claim 1, wherein Both sides of the steel cover plate (4) are upwardly curved arcs, and arc-shaped steel cover plate sliding seats (2) matching the two sides of the upwardly curved arcs of the steel cover plate (4) are provided on the tops of the symmetrically arranged steel boxes (7).

6. The self-resetting seismic isolation joint cover plate device according to claim 5, characterized in that, An elastic glue (3) for sealing the gap is provided between both sides of the steel cover plate (4) and the arc-shaped steel cover plate sliding seats (2).

7. The self-resetting seismic isolation joint cover plate device according to claim 4, characterized in that, The steel cover plate (4) and the steel connecting rod (6) are hinged through a steel ear plate (5) provided at the lower part of the steel cover plate (4), and the steel support rod (11) and the steel connecting rod (6) are hinged through a first spring clip (14) provided on the steel support rod (11).

8. The self-resetting seismic isolation joint cover plate device according to claim 7, wherein, The reset spring includes an intermediate reset spring (13) and two-side reset springs (12). A second spring clip (15) is provided on the steel support rod (11). The second spring clips (15) are paired and symmetrically arranged about the center of the steel support rod (11). The intermediate reset spring (13) is located between the first spring clips (14), and the two-side reset springs (12) are paired and located between the first spring clips (14) and the second spring clips (15).

9. The self-resetting seismic isolation joint cover plate device according to claim 8, characterized in that, A limiting part (17) for fixing the intermediate reset spring (13) is provided at the central position of the steel support rod (11).

10. A self-resetting seismic isolation joint cover device according to claim 8, characterized in that, Limiting parts (17) for restricting the first spring clip (14) and the second spring clip (15) from sliding towards the steel box (7) are provided on the steel support rod (11).

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