Anti-overturning device of connecting rod type

Abstract

The application discloses a connecting rod type anti-overturning device, which comprises two circular arc movement connecting rod mechanisms and a vertical displacement limiting unit. The two circular arc movement connecting rod mechanisms are placed in a mutually orthogonal and inverted manner. The movement track of the movable end of each of the two circular arc movement connecting rod mechanisms is in a circular arc shape or a straight line shape on the respective movement plane. The vertical displacement limiting unit is connected between the movable ends of the two circular arc movement connecting rod mechanisms. When one end of the connecting rod type anti-overturning device is fixed, the other end of the connecting rod type anti-overturning device moves in an approximate spherical surface or horizontal plane. When the vertical displacement limiting unit is vertically elongated to the maximum value, the vertical displacement limiting unit starts to bear and transmit a pulling force. The application can adapt to the natural deformation of various friction pendulum bearings, sliding plate bearings, rubber bearings and other shock insulation bearings, and can provide the shock insulation layer with anti-overturning capacity without affecting the horizontal shock insulation performance of the bearings. The application has a simple structure and is convenient to manufacture.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil engineering, in particular to a connecting rod type anti-overturning device. BACKGROUND

[0002] Base isolation technology effectively reduces the input of seismic energy to the building structure by setting isolation bearings at the bottom of each column of the building structure bottom layer, thereby protecting the safety of the building structure and its internal equipment. It is relatively mature in the field of ordinary building structure seismic resistance.

[0003] With the development of high-rise buildings, more and more high-rise buildings have isolation requirements. Under the action of earthquakes, the edge column components at the bottom of high-rise buildings are prone to tension due to overturning moments. Conventional isolation bearings have poor tensile properties and are difficult to withstand the tension generated by building overturning. After being pulled to failure, it will have a very adverse effect on the building, and even cause the building to completely overturn. Although the existing related technology can improve the tensile strength of the bearing, it cannot adapt to the natural vertical deformation caused by the horizontal deformation of the bearing, or it will significantly increase the horizontal restoring force of the isolation bearing, seriously affecting the horizontal isolation performance of the isolation layer, significantly reducing the seismic performance of the building, and has poor applicability. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a connecting rod type anti-overturning device that can adapt to the natural deformation of various friction pendulum bearings, sliding plate bearings, rubber bearings and other isolation bearings, and provide anti-overturning capacity for the isolation layer without affecting the horizontal isolation performance of the bearing.

[0005] The connecting rod type anti-overturning device according to the embodiment of the present application comprises two circular arc motion connecting rod mechanisms and a vertical displacement limiting unit, the two circular arc motion connecting rod mechanisms are placed orthogonally and upside down with respect to each other, the movement trajectories of the movable ends of the two circular arc motion connecting rod mechanisms are circular arcs or straight lines on their respective movement planes, and the vertical displacement limiting unit is connected between the movable ends of the two circular arc motion connecting rod mechanisms; when one end of the connecting rod type anti-overturning device is fixed, the other end of the connecting rod type anti-overturning device moves approximately on a spherical surface or a horizontal plane, and when the vertical displacement limiting unit is vertically elongated to the maximum value, the vertical displacement limiting unit begins to bear and transmit tension.

[0006] The connecting rod type anti-overturning device of the embodiment of the present application is generally installed in the isolation layer of a high-aspect-ratio isolation building, i.e. the isolation support, and the specific installation position is near the isolation support at the corner point of the building, between the top layer and the bottom layer of the isolation support. When installed, the two circular arc movement connecting rod mechanisms of the connecting rod type anti-overturning device are fixed in the top layer and the bottom layer of the isolation layer of the building by pre-buried or post-anchored or welded methods, to realize the fixation of the two circular arc movement connecting rod mechanisms and the top layer and the bottom layer of the isolation support. On the one hand, since the circular arc movement connecting rod mechanisms are placed in a mutually orthogonal inverted manner, the movement trajectories of the movable ends of the two circular arc movement connecting rod mechanisms are circular arc-shaped or linear-shaped on the respective movement planes, i.e. the movement trajectories of the movable ends of the two circular arc movement connecting rod mechanisms are mutually orthogonal, so that when one end of the connecting rod type anti-overturning device is fixed, the other end of the connecting rod type anti-overturning device can move in a nearly spherical or horizontal plane, so that the connecting rod type anti-overturning device and the isolation support move synchronously in the horizontal and vertical directions. Therefore, the three-dimensional movement of the connecting rod type anti-overturning device of the embodiment of the present application can adapt to the natural deformation of various friction pendulum supports, sliding plate supports, rubber supports and other isolation supports, avoid affecting the isolation performance of the isolation support, significantly improve the seismic performance of the building, and have good applicability. On the other hand, the vertical displacement limiting unit is connected between the movable ends of the two circular arc movement connecting rod mechanisms, to limit the vertical distance between the movable ends of the two circular arc movement connecting rod mechanisms. When the vertical displacement limiting unit is elongated to the maximum value, the vertical displacement limiting unit starts to bear and transmit tension. In this way, the maximum value of the vertical elongation displacement of the vertical displacement limiting unit can be set in advance according to the tensile limit value of the isolation layer of the building that is about to overturn. When the vertical elongation displacement of the vertical displacement limiting unit reaches the maximum value, the vertical displacement limiting unit starts to bear and transmit tension, to avoid the local large lifting of the isolation support of the building, realize the anti-pulling protection function of the isolation support, and avoid the overturning of the isolation building.

[0007] In summary, the connecting rod type anti-overturning device of the embodiment of the present application has the following advantages: first, it can move in cooperation with various types of isolation supports, protect the isolation support from being damaged by tension, and avoid affecting the horizontal isolation performance of the isolation support; second, the force transmission path is clear, the anti-pulling force is large, the overturning of the isolation building can be avoided, and the device is suitable for the isolation of high-aspect-ratio high-rise buildings.

[0008] In some embodiments, each of the circular-arc motion linkage mechanisms comprises a movable rhombus frame, a side support linkage, a central linkage, and a fixed end portion, the fixed end portion comprises an end portion body and a protrusion inside the end portion body, the end portion body is used to be fixed with the isolation layer, the end portion body has two first connection points and is located on both sides of the protrusion, the protrusion has one second connection point, each angle in one group of opposite angles of the movable rhombus frame is connected with both the first connection points through the side support linkage, one angle in another group of opposite angles of the movable rhombus frame is connected with the second connection point through the central linkage, another angle in the another group of opposite angles of the movable rhombus frame is connected with the vertical displacement limiting unit, the movement track of the another angle in the another group of opposite angles of the movable rhombus frame is in a circular-arc shape or a straight line shape.

[0009] Among the two circular-arc motion linkage mechanisms, the direction of all the hinge axes of one of the circular-arc motion linkage mechanisms is a first direction, and the direction of all the hinge axes of the other of the circular-arc motion linkage mechanisms is a second direction, the second direction is perpendicular to the first direction.

[0010] In some embodiments, the movable rhombus frame is sequentially connected by four end linkages with the same length.

[0011] In some embodiments, for each of the circular-arc motion linkage mechanisms, the projection plane is the movement plane of the another angle in the another group of opposite angles of the movable rhombus frame, and the projection lengths of all the side support linkages on the projection plane are the same.

[0012] In some embodiments, for each of the circular-arc motion linkage mechanisms, when the projection length of the central linkage on the projection plane is not equal to the projection length of the line connecting the second connection point and the first connection point on the projection plane, the movement track of the another angle in the another group of opposite angles of the movable rhombus frame is in a circular-arc shape; when the projection length of the central linkage on the projection plane is equal to the projection length of the line connecting the second connection point and the first connection point on the projection plane, the movement track of the another angle in the another group of opposite angles of the movable rhombus frame is in a straight line shape.

[0013] In some embodiments, when the linkage type anti-overturning device is used in cooperation with a friction pendulum isolation bearing, the following design is made consistent with the equivalent radius of the friction pendulum isolation bearing;

[0014] When the linkage type anti-overturning device is used in cooperation with a sliding plate isolation bearing or a rubber isolation bearing, the following design is made l′2=l2;

[0015] Wherein, l1 is the projection length of the side link on the projection plane, l2 is the projection distance from the second connecting point to the first connecting point on the projection plane, l'2 is the projection length of the center link on the projection plane, and l3 is the side length of the rhombus frame on the projection plane.

[0016] In some embodiments, the end body is a cross-shaped structure, two first connecting points are located on a set of two opposite extensions in the cross-shaped structure, the protruding part is located on another set of two opposite extensions in the cross-shaped structure, and the line connecting the second connecting point and the intersection center point of the cross-shaped structure is perpendicular to the cross-shaped structure.

[0017] In some embodiments, the vertical displacement limiting unit comprises two connecting end plates and at least one force bearing rod. The two connecting end plates are oppositely arranged, and the outer sides of the two connecting end plates are respectively hinged to another corner in another set of opposite corners of the movable rhombus frame. The at least one force bearing rod is slidably arranged through the two connecting end plates, and the two ends of the at least one force bearing rod are respectively provided with a stopper located on the outer side of the corresponding connecting end plate.

[0018] In some embodiments, the force bearing rod is a screw rod, and the stopper is a nut.

[0019] In some embodiments, the position of the nut at the two ends of each screw rod is adjustable.

[0020] Additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:

[0022] Figure 1 Structure diagram of the link type anti-overturning device of the present application;

[0023] Figure 2 Structure diagram of the circular arc motion link mechanism of the link type anti-overturning device of the present application;

[0024] Figure 3 Structure diagram of the vertical displacement limiting unit of the link type anti-overturning device of the present application;

[0025] Figure 4 Structure diagram of the link type anti-overturning device of the present application after moving;

[0026] Figure 5Figure 1 is a schematic diagram of an installation method of a connecting rod type anti-overturning device according to the present application;

[0027] Figure 6 Figure 2 is a schematic diagram of a planar abstract model of a circular-arc motion connecting rod mechanism of the connecting rod type anti-overturning device according to the present application.

[0028] Reference signs:

[0029] Connecting rod type anti-overturning device 1000; circular-arc motion connecting rod mechanism 1; movable rhombus frame 11; side branch connecting rod 12; central connecting rod 13; fixed end portion 14; end portion body 141; first connection point 1411; protruding portion 142; second connection point 1421; vertical displacement limiting unit 2; connection end plate 21; force bearing rod 22; stop piece 23; isolation bearing 3. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0031] The connecting rod type anti-overturning device 1000 of the embodiments of the present application is described below in conjunction with Figures 1 to 6

[0032] As shown in Figures 1 to 5 , the connecting rod type anti-overturning device 1000 according to the embodiments of the present application includes two circular-arc motion connecting rod mechanisms 1 and a vertical displacement limiting unit 2. The two circular-arc motion connecting rod mechanisms 1 are placed orthogonally and upside down to each other, the movement trajectories of the movable ends of the two circular-arc motion connecting rod mechanisms 1 are circular arcs or straight lines on the respective movement planes, and the vertical displacement limiting unit 2 is connected between the movable ends of the two circular-arc motion connecting rod mechanisms 1. When one end of the connecting rod type anti-overturning device 1000 is fixed, the other end of the connecting rod type anti-overturning device 1000 moves in a spherical surface or a horizontal plane, and when the vertical displacement limiting unit 2 is vertically elongated to the maximum, the vertical displacement limiting unit 2 starts to bear and transmit tension.

[0033] The connecting rod type anti-overturning device 1000 according to the embodiments of the present application is usually installed in the isolation layer, i.e., the isolation bearing 3, of a large height-width ratio isolation building (as shown in Figure 5 , and the specific installation position is near the isolation bearing 3 of the building corner point, between the top layer and the bottom layer of the isolation bearing 3. When installed, the two circular-arc motion connecting rod mechanisms 1 of the connecting rod type anti-overturning device 1000 are fixed in the top layer and the bottom layer of the isolation layer of the building by pre-buried or post-anchored or welded methods, to realize the fixation of the two circular-arc motion connecting rod mechanisms 1 and the top layer and the bottom layer of the isolation bearing 3 (as shown in Figure 5 ​The two movable ends of the two circular-arc motion connecting rod mechanisms 1 are arranged in a mutually orthogonal and inverted manner, and the movement trajectories of the two movable ends of the two circular-arc motion connecting rod mechanisms 1 are circular arcs or straight lines on the respective movement planes, that is, the movement trajectories of the two movable ends of the two circular-arc motion connecting rod mechanisms 1 are orthogonal to each other, so that when one end of the connecting rod type anti-overturning device 1000 is fixed, the other end of the connecting rod type anti-overturning device 1000 can move in a spherical surface or a horizontal plane, so that the connecting rod type anti-overturning device 1000 can move horizontally and vertically synchronously with the isolation bearing 3, and therefore, the three-dimensional movement of the connecting rod type anti-overturning device 1000 of the embodiment of the present application can adapt to the natural deformation of various friction pendulum bearings, sliding plate bearings, rubber bearings and other isolation bearings 3, avoid affecting the isolation performance of the isolation bearing 3, significantly improve the seismic performance of the building, and have good applicability.

[0034] In summary, the connecting rod type anti-overturning device 1000 of the embodiment of the present application has the following advantages: first, it can move in cooperation with various types of isolation bearings 3, protect the isolation bearing 3 from being damaged by tension, and avoid affecting the horizontal isolation performance of the isolation bearing 3; second, the force transmission path is clear, the anti-pulling force is large, the isolation building can be prevented from overturning, and it is suitable for the isolation of high-rise buildings with large height-width ratio.

[0035] In some embodiments, each circular-arc motion linkage 1 comprises a movable rhombus frame 11, a side support linkage 12, a central linkage 13 and a fixed end 14 connected by hinges, wherein the movable rhombus frame 11 refers to that the four sides of the movable rhombus frame 11 can rotate in the plane, and the connections among the movable rhombus frame 11, the side support linkage 12, the central linkage 13 and the fixed end 14 are all by hinges; the fixed end 14 comprises an end body 141 and a protrusion 142 inside the end body 141, the end body 141 is used to be fixed with the isolation layer, the end body 141 has two first connection points 1411 and is located on both sides of the protrusion 142, the protrusion 142 has one second connection point 1421; each corner of one set of opposite corners of the movable rhombus frame 11 is connected with the two first connection points 1411 by the side support linkages 12, for example, one corner of one set of opposite corners of the movable rhombus frame 11 is connected with the two first connection points 1411 by two side support linkages 12, and the other corner of one set of opposite corners of the movable rhombus frame 11 is also connected with the two first connection points 1411 by the other two side support linkages 12; one corner of the other set of opposite corners of the movable rhombus frame 11 is connected with the second connection point 1421 by the central linkage 13, and the other corner of the other set of opposite corners of the movable rhombus frame 11 is connected with the vertical displacement limiting unit 2; the movement trajectory of the other corner of the other set of opposite corners of the movable rhombus frame 11 is in a circular-arc shape or a straight line shape, that is, the movement trajectory of the movable end of the circular-arc motion linkage 1 is in a circular-arc shape or a straight line shape.

[0036] Among the two circular-arc motion linkages 1, the directions of all hinge axes of one circular-arc motion linkage 1 are in a first direction, and the directions of all hinge axes of the other circular-arc motion linkage 1 are in a second direction, the second direction is perpendicular to the first direction, that is, the two circular-arc motion linkages 1 are connected on the two outer sides of the vertical displacement limiting unit 2 in a mutually orthogonal and inverted manner.

[0037] In this embodiment, due to the movement trajectory of the other corner of the other set of opposite corners of the movable rhombus frame 11 being in a circular-arc shape or a straight line shape, and the two circular-arc motion linkages 1 being connected in a mutually orthogonal and inverted manner, the function of the other end of the linkage-type anti-overturning device 1000 performing approximate spherical or planar motion can be realized under the condition that one end of the linkage-type anti-overturning device 1000 is fixed, so that when the linkage-type anti-overturning device 1000 of this embodiment is installed on the isolation layer, its three-dimensional motion can be adapted to the motion deformation of the isolation bearing 3 such as the friction pendulum bearing, the sliding plate bearing and the rubber bearing, the vertical tensile capacity can be provided, the horizontal isolation performance of the isolation bearing 3 is avoided from being affected by the existence of the linkage-type anti-overturning device 1000, the seismic performance of the building is significantly improved, the applicability is good, at the same time, the linkage-type anti-overturning device 1000 of this embodiment has the anti-pulling protection effect on the isolation bearing 3 under the action of the earthquake, the overturning of the isolation building can be avoided, and the structure is simple, the force transmission path is clear, the anti-pulling force is large, the manufacturing is convenient, and the linkage-type anti-overturning device 1000 is suitable for the isolation of high-rise buildings with large height-width ratio.

[0038] In some embodiments, the movable rhombus frame 11 is formed by four end links 111 of equal length, which are hinged together end to end. The four sides of the movable rhombus frame 11 itself can rotate in the plane.

[0039] In some embodiments, reference Figure 6 As shown, for each circular arc motion linkage 1, the motion plane of the other corner of the other set of diagonals of the movable rhombus frame 11 is used as the projection plane, and the projection lengths of all side support links 12 on the projection plane are consistent. This helps to ensure that the other corner of the other set of diagonals of the movable rhombus frame 11 of the circular arc motion linkage 1, that is, the movable end of the circular arc motion linkage 1, performs precise circular arc motion or linear motion.

[0040] In some embodiments, for each arc motion linkage mechanism 1, when the projected length of the central link 13 on the projection plane is not equal to the projected length of the line connecting the second connection point 1421 and the first connection point 1411 on the projection plane, the motion trajectory of the other corner of the other set of opposite corners of the movable rhombus frame 11 is arc-shaped; when the projected length of the central link 13 on the projection plane is equal to the projected length of the line connecting the second connection point 1421 and the first connection point 1411 on the projection plane, the motion trajectory of the other corner of the other set of opposite corners of the movable rhombus frame 11 is straight-line.

[0041] Specifically, it can be theoretically proven that the movable end of the circular arc motion linkage mechanism 1 can only perform precise circular arc motion or linear motion.

[0042] The proof is as follows: Figure 6 The thicker lines represent the planar abstract model of the circular arc motion linkage mechanism 1. OC is the projection of the side support link 12 onto the projection plane, EF is the projection of the central link 13 onto the projection plane, and CE and BC are the projections of the two sides of the movable rhombus frame 11 onto the projection plane. Circle F is the trajectory of point E, and E' is the intersection of OE and circle F. A line parallel to BF' is drawn through point B, intersecting OF at point F'. Point B is the other angle of the other set of diagonals of the movable rhombus frame 11, which is also the movable end of the circular arc motion linkage mechanism 1. Let l1 be the projection length of the side support link 12 onto the projection plane, l2 be the projection distance from the second connection point 1421 to the first connection point 1411 onto the projection plane, l′2 be the projection length of the central link 13 onto the projection plane, and l3 be the side length of the movable rhombus frame 11 onto the projection plane.

[0043]

[0044] Similarly:

[0045] Then there is,

[0046] According to ΔOFE' ~ ΔOF'B,

[0047] Therefore

[0048] F' is a fixed point, and BF' has a fixed length. If l'2≠l2, the trajectory of point B is a circle around point F', that is, the trajectory of the moving end of the circular-arc motion linkage mechanism 1 is a circular arc. If l'2=l2, the trajectory of point B is a straight line, that is, the trajectory of the moving end of the circular-arc motion linkage mechanism 1 is a straight line.

[0049] In some embodiments, when the linkage-type anti-overturning device 1000 is used in cooperation with a friction pendulum seismic isolation bearing, the linkage-type anti-overturning device 1000 is designed to have an equivalent radius consistent with that of the friction pendulum seismic isolation bearing, so that the linkage-type anti-overturning device 1000 performs approximate spherical motion to cooperate with the natural deformation of the friction pendulum seismic isolation bearing. When the linkage-type anti-overturning device 1000 is used in cooperation with a sliding plate seismic isolation bearing 3 or a rubber seismic isolation bearing 3, the linkage-type anti-overturning device 1000 is designed to have l'2=l2, so that the linkage-type anti-overturning device 1000 performs planar motion to cooperate with the natural deformation of the sliding plate seismic isolation bearing 3 or the rubber seismic isolation bearing 3.

[0050] The above-mentioned l1 is the projection length of the side linkage 12 on the projection plane, l2 is the projection distance of the second connecting point 1421 to the first connecting point 1411 on the projection plane, l'2 is the projection length of the center linkage 13 on the projection plane, and l3 is the side length of the rhombus frame on the projection plane.

[0051] In some embodiments, the end body 141 has a cross structure, two first connecting points 1411 are located on a set of two opposite extensions in the cross structure, the protruding part 142 is located on another set of two opposite extensions in the cross structure, and the line connecting the second connecting point 1421 and the intersection center point of the cross structure is perpendicular to the cross structure. The end body 141 has a simple structure and is convenient to manufacture and process.

[0052] In some embodiments, the vertical displacement limiting unit 2 comprises two connecting end plates 21 and at least one force bearing rod 22, for example, the force bearing rod 22 can be four or other number; the two connecting end plates 21 are oppositely arranged, and the outer sides of the two connecting end plates 21 are respectively hinged to another corner in the other group of diagonals of the corresponding movable rhombus frame 11, and the at least one force bearing rod 22 is slidably through the two connecting end plates 21, so that when the two circular arc motion connecting rod mechanisms 1 follow the movement of the top layer or the bottom layer of the corresponding isolation layer, the corresponding connecting end plates 21 can drive the corresponding connecting end plates 21 to slide relative to the force bearing rod 22; the two ends of the at least one force bearing rod 22 are provided with stop pieces 23, and the stop pieces 23 are located on the outer sides of the corresponding connecting end plates 21, so that the connecting end plates 21 and the force bearing rod 22 can be avoided from being separated, and at the same time, when the two connecting end plates 21 move close to each other, the force bearing rod 22 is not stressed, and when the two connecting end plates 21 move away from each other to abut against the stop pieces 23 on the outer sides, that is, the vertical elongation displacement of the vertical displacement limiting unit 2 reaches the maximum value, at this time, the force bearing rod 22 begins to bear and transmit tension, the force transmission path is clear, the tension is large, and the isolation support 3 has the anti-pulling protection effect, so that the overturning of the isolation building can be avoided. The connecting rod type anti-overturning device 1000 of the embodiment has a simple structure and is convenient to manufacture.

[0053] In some embodiments, the force bearing rod 22 is a screw rod, and the stop piece 23 is a nut, and the nut is threadedly matched with the screw rod, so that the nut is convenient to disassemble and assemble, and the connection is reliable.

[0054] In some embodiments, the positions of the nuts at the two ends of each screw rod are adjustable. By adjusting the positions of the nuts on the screw rods, the maximum distance of the two connecting end plates 21 moving away from each other can be adjusted, that is, the vertical displacement limit value of the vertical displacement limiting unit 2 can be set to match different isolation layers.

[0055] In the description of the present specification, the description of the terms “one embodiment”, “some embodiments”, “an illustrative embodiment”, “an example”, “a specific example”, or “some examples” means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements, and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A linkage-type roll-over protection device, characterized by, The device comprises two circular motion linkage mechanisms and a vertical displacement limiting unit, the two circular motion linkage mechanisms are placed in opposite directions, the movement trajectory of the active end of the two circular motion linkage mechanisms is circular or linear, the vertical displacement limiting unit is connected between the active ends of the two circular motion linkage mechanisms, when one end of the linkage type anti-overturning device is fixed, the other end of the linkage type anti-overturning device moves in a spherical or horizontal plane, and when the vertical displacement limiting unit is vertically elongated to the maximum, the vertical displacement limiting unit starts to bear and transmit tension. Each circular motion linkage mechanism comprises an active rhombus frame, a side support linkage, a center linkage and a fixed end, the fixed end comprises an end body and a protruding part inside the end body, the end body is used to be fixed with the shock insulation layer, the end body has two first connection points and is located on both sides of the protruding part, the protruding part has a second connection point, each angle in one group of opposite angles of the active rhombus frame is connected with the two first connection points through the side support linkage, one angle in the other group of opposite angles of the active rhombus frame is connected with the second connection point through the center linkage, the other angle in the other group of opposite angles of the active rhombus frame is connected with the vertical displacement limiting unit, and the movement trajectory of the other angle in the other group of opposite angles of the active rhombus frame is circular or linear. In the two circular motion linkage mechanisms, the direction of all hinge axes of one of the circular motion linkage mechanisms is the first direction, and the direction of all hinge axes of the other of the circular motion linkage mechanisms is the second direction, the second direction is perpendicular to the first direction.

2. The anti-overturning device of claim 1, wherein The active rhombus frame is sequentially hinged by four end linkages with the same length.

3. The anti-overturning device of claim 1, wherein For each circular motion linkage mechanism, the projection length of all side support linkages on the projection plane of the other angle in the other group of opposite angles of the active rhombus frame is consistent.

4. The anti-overturning device of claim 3, wherein For each circular motion linkage mechanism, when the projection length of the center linkage on the projection plane is not equal to the projection length of the line connecting the second connection point and the first connection point on the projection plane, the movement trajectory of the other angle in the other group of opposite angles of the active rhombus frame is circular; when the projection length of the center linkage on the projection plane is equal to the projection length of the line connecting the second connection point and the first connection point on the projection plane, the movement trajectory of the other angle in the other group of opposite angles of the active rhombus frame is linear.

5. The anti-overturning device of claim 4, wherein When the connecting rod type anti-overturning device is used in cooperation with the friction pendulum seismic isolation support, through design consistent with the equivalent radius of the friction pendulum seismic isolation support; When the connecting rod type anti-overturning device is used in combination with a sliding plate isolation bearing or a rubber isolation bearing, by design ; wherein, l 1 is the projected length of the side link on the projection plane, l 2 is the projected distance of the second connection point to the first connection point on the projection plane, is the projected length of the center link on the projection plane, l 3 is the side length of the moving rectangle on the projection plane.

6. The anti-overturning device of claim 1, wherein The end body is a cross-shaped structure, the two first connection points are located on one group of opposite two extension parts in the cross-shaped structure, the protruding part is located on the other group of opposite two extension parts in the cross-shaped structure, and the line connecting the second connection point and the intersection center point of the cross-shaped structure is perpendicular to the cross-shaped structure.

7. The anti-roll linkage of claim 1, wherein The vertical displacement limiting unit comprises two connecting end plates and at least one force bearing rod, the two connecting end plates are oppositely arranged, the outer sides of the two connecting end plates are respectively hinged to another corner in another group of opposite corners of the corresponding movable rhombic frame, the at least one force bearing rod is slidably arranged through the two connecting end plates, and both ends of the at least one force bearing rod are provided with stop pieces located at the outer sides of the corresponding connecting end plates.

8. The anti-roll linkage of claim 7, wherein The force bearing rod is a screw rod, and the stop piece is a nut, which is threadedly matched with the screw rod.

9. The anti-roll linkage of claim 8, wherein The positions of the nuts at the two ends of each screw rod are adjustable.

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