Anti-disengaging self-resetting anti-overturning device for support

Abstract

The invention relates to the technical field of shock absorption and isolation of engineering structures, and provides a support anti-disengaging self-resetting anti-overturning device which comprises an upper supporting part and a lower supporting part, the upper supporting part comprises a friction box, a friction block, a connecting rod, a first resetting rod and a second resetting rod, and the lower supporting part comprises a sliding frame, a third resetting rod, a sliding block and a universal transmission assembly. Multi-directional displacement of the structure under the earthquake action is decomposed and allocated through the upper branch part and the lower branch part and is borne by the upper branch part and the lower branch part respectively, a loose and coupled working mechanism is formed, the vertical tensile capacity of the support is improved while normal horizontal rotation of the support is not affected, and the service life of the support is prolonged. Different from a traditional rigid tensile mode, disengaging separation between the structure and the support is reduced, reciprocating energy consumption and post-earthquake resetting are achieved through a first resetting rod, a second resetting rod and a third resetting rod, energy is dissipated again through linkage reciprocating sliding of a friction block and a friction box and linkage reciprocating sliding of a sliding block and a sliding frame, the overall response of the structure is controlled, and the service life of the structure is prolonged. And the safety and reliability of the structure are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of engineering structure seismic reduction and isolation, and in particular to a support anti-slip self-resetting anti-overturning device. Background Art

[0002] Earthquakes are sudden, release energy quickly, and are difficult to predict, which poses a huge challenge to the service life and performance of structures. As the connecting medium between the upper and lower structures of traditional buildings, bearings bear important structural load-bearing and force transmission functions. Under the action of strong earthquakes, structures with large aspect ratios usually produce obvious bumps and shaking. However, the tensile capacity of traditional bearings is relatively insufficient, and they are prone to yield when under tension, causing the structure to overturn and fail as a whole. At the same time, after the bearing exceeds the seismic capacity limit, the structure and the bearing are separated and lifted. When the earthquake input energy is insufficient to support the structure to maintain the upward pull, the structure begins to fall back and has a secondary collision with the bearing, resulting in a series of coupled damages between the structure and the bearing on the force transmission path.

[0003] Therefore, in order to ensure the safety of the structure under earthquake action, a shock absorbing device is often introduced to dissipate the seismic energy input into the structure, thereby achieving the goal of extending the structural period and reducing the response. In the prior art, in order to deal with the phenomenon of the bearing being emptied when the structure is lifted or overturned during an earthquake, the main methods used are to change the bearing structure or increase the damping constraints of the upper and lower structures. These two methods have the disadvantages of complex structure, difficult processing, and failure to fully consider the vertical tensile resistance of the bearing, which affects and weakens the participation of the bearing in the structural earthquake resistance.

[0004] In addition, existing shock-absorbing devices still face challenges in terms of material performance. If the vertical pull-up of the support is not allowed at all, that is, a rigid displacement control method is adopted, the internal force response of the structure will increase significantly; if the support is allowed to be lifted within a certain range, it will cause excessive stretching of the material and lead to irreversible plastic deformation. At the same time, in the face of reciprocating work under the action of earthquakes, for this type of tensile and compressive metal damper, there is often an imbalance in tensile and compressive performance, and the pull rods are unstable and damaged by compression.

[0005] Then, in the face of the long-term performance challenges brought by earthquakes to structures, shock-absorbing devices will inevitably have performance degradation and device instability after long-term service, but traditional shock-absorbing devices do not consider whether they are standardized in design and can be replaced after an earthquake. Therefore, driven by the above-mentioned problems, there is an urgent need for a simple device that can effectively dissipate and accumulate earthquake energy, achieve the working goal of balanced matching of tensile and compressive performance, meet the self-reset requirements of the structure, and carry out standardized design according to requirements to achieve a new type of anti-slip and anti-overturning device that can be quickly replaced after an earthquake. Summary of the invention

[0006] The purpose of the present invention is to provide a support anti-slipping self-resetting anti-overturning device to solve the above-mentioned technical problems. While different from the use of transmission rigid tensile resistance to improve the vertical tensile resistance of the support, it reduces the slippage and separation between the structure and the support, improves the overall seismic performance of the structure, enriches the energy dissipation path of the structure under the action of an earthquake, and ensures the safety and reliability of the structure.

[0007] The embodiment of the present invention is realized by the following technical scheme: a support anti-slip self-resetting anti-overturning device, comprising:

[0008] The upper branch includes a stacked friction box, wherein friction blocks are horizontally slidably arranged in the friction box, and connecting rods are arranged between adjacent friction boxes, and both ends of the connecting rods are respectively hinged to the friction blocks vertically staggered in the adjacent friction boxes. The friction box is provided with a first reset rod and a second reset rod 19 for limiting and resetting the friction blocks, the first reset rod 14 is arranged between the friction box 11 and the friction block 12, and the second reset rod 19 is arranged between adjacent friction blocks 12 in the same friction box 11;

[0009] The lower branch includes a sliding frame, a third reset rod for limiting, resetting and supporting the horizontal torsion of the lower branch is arranged between the sliding frame and the friction box, a sliding block is arranged for limiting sliding in the sliding frame, and the sliding block is movably connected to the friction box through a universal transmission assembly.

[0010] Furthermore, the first reset rod and the second reset rod both include a reset stretching section and a transition section and a screw section symmetrically arranged at two ends of the reset stretching section.

[0011] Preferably, the screw segment is sequentially connected with a snap ring, a first anchor nut, a spring washer and a second anchor nut from the inside to the outside, and the snap ring abuts against the friction block or the side wall of the friction box.

[0012] Furthermore, the third reset rod includes a pull rod and anchor heads arranged at both ends of the pull rod, the pull rod is connected to the anchor head through a cable, one end of the anchor head is connected to the top of the sliding frame, and the other end of the anchor head is connected to the bottom of the friction box.

[0013] Furthermore, the universal transmission assembly includes a transmission rod and a universal joint arranged at the end of the transmission rod, and the universal joint is rotatably connected to the sliding block and the friction box.

[0014] Furthermore, the sliding frame includes a central block and double-layer plates evenly arranged horizontally around the central block, and a sliding groove for limiting sliding connection of the sliding block is provided in the double-layer plates.

[0015] Furthermore, the universal transmission assembly is detachably connected to the sliding block and / or the friction box, and the third reset rod is detachably connected to the sliding frame and / or the friction box.

[0016] Furthermore, two friction blocks are arranged in the same friction box, and a guide groove for accommodating the horizontal sliding of the friction blocks is opened in the friction box.

[0017] Preferably, a friction plate is detachably provided on the inner wall of the guide groove.

[0018] Furthermore, a connecting earring is provided at the top center of the top friction box.

[0019] The present invention has at least the following advantages and beneficial effects:

[0020] (1) Through the cooperation between the upper and lower branches, the multi-directional displacement of the structure under the action of earthquake is decomposed and allocated, and the upper and lower branches bear the load respectively, forming a loose and coupled working mechanism. Different from the traditional rigid tensile resistance, it allows a certain tension and compression, and improves the vertical tensile and compressive capacity of the bearing without affecting the normal horizontal rotation of the bearing;

[0021] (2) The first reset rod and the second reset rod act together on the friction block to ensure that during the tension and compression process of the device, the friction block always stretches the first reset rod or the second reset rod, thereby realizing bidirectional energy dissipation in tension and compression, effectively limiting the upward and downward pressure of the friction box, and improving the tension and compression resistance and stability of the device; at the same time, by providing the first reset rod, the second reset rod and the third reset rod, a larger energy dissipation capacity and post-earthquake reset capacity are provided, thereby avoiding the separation between the structure and the support and reducing the overall response of the structure;

[0022] (3) The seismic energy is converted into heat energy for dissipation through the linkage reciprocating sliding of the friction block and the friction box, and the sliding block and the sliding frame, thereby improving the seismic energy dissipation capacity;

[0023] (4) Spring washers are provided on the first anchor nut and the second anchor nut to provide secondary buffering to prevent the anchoring section from being subjected to excessive impact force;

[0024] (5) By replacing the universal joint and re-tensioning the cable, the upper or lower branch can be quickly replaced in a standardized manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of the structure of a support anti-slip self-resetting anti-overturning device provided by the present invention;

[0027] Figure 2A perspective view of an upper branch of a support anti-slipping self-resetting anti-overturning device provided by the present invention;

[0028] Figure 3 A schematic diagram of a part of the structure of the upper branch of a support anti-emptying self-resetting anti-overturning device provided by the present invention;

[0029] Figure 4 A schematic diagram of the structure of a first reset rod and a second reset rod in a support anti-slip self-reset anti-overturning device provided by the present invention;

[0030] Figure 5 A schematic diagram of a part of the structure of the lower branch of a support anti-emptying self-resetting anti-overturning device provided by the present invention;

[0031] Icons: 1-upper branch, 10-connecting earring, 11-friction box, 110-guide groove, 12-friction block, 13-connecting rod, 14-first reset rod, 141-reset stretching section, 142-transition section, 143-screw section, 15-circuit ring, 16-first anchor nut, 17-spring washer, 18-second anchor nut, 19-second reset rod, 2-lower branch, 21-sliding frame, 210-slide groove, 211-center block, 212-double-layer plate, 22-third reset rod, 221-pull rod, 222-anchor head, 223-cable, 23-sliding block, 24-universal transmission assembly, 241-transmission rod, 242-universal joint. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example

[0035] like Figure 1-5 As shown, in this embodiment, a support anti-emptying self-resetting anti-overturning device is mainly disclosed, which can adapt to the characteristics of earthquake energy disorder, has the advantages of fast earthquake energy dissipation, strong tensile strength and self-resetting, and its main structure includes an upper branch 1 and a lower branch 2;

[0036] The upper branch 1 includes a stacked friction box 11, in which a friction block 12 is horizontally slidably arranged, and a connecting rod 13 is provided between adjacent friction boxes 11. The two ends of the connecting rod 13 are respectively hinged to the friction blocks 12 vertically staggered in the adjacent friction boxes 11. The friction box 11 is provided with a first reset rod 14 and a second reset rod 19 for limiting and resetting the friction block 12. The first reset rod 14 is arranged between the friction box 11 and the friction block 12, and the second reset rod 19 is arranged between adjacent friction blocks 12 in the same friction box 11; specifically, the upper branch 1 provides vertical tensile and compressive resistance for the structure, the friction box 11 is in the shape of a horizontally arranged long strip, and a plurality of friction boxes 11 are vertically stacked, and the multi-layer friction boxes 11 are connected into a whole by the connecting rod 13, and the number of stacked friction boxes 11 can be adjusted according to the energy consumption requirements of the project; under the action of an earthquake, the friction box 11 The upward pulling and downward pressing behaviors are generated, and the connecting rods 13 between the friction boxes 11 rotate, thereby driving the friction blocks 12 to slide in the friction boxes 11. Through the reciprocating friction of the friction blocks 12, the seismic energy is dissipated in the form of heat energy, and the greater the pulling pressure, the higher the friction force. Through the above force transmission path, the purpose of dissipating the seismic energy is achieved; at the same time, the reciprocating sliding of the friction blocks 12 acts on the first reset rod 14 and the second reset rod 19 to make them produce horizontal lateral stretching action, ensuring that the device is pulled by the first reset rod 14 or the second reset rod 19 during tension and compression, limiting the upward pulling and downward pressing of the friction box 11, effectively improving the tensile and compressive performance and stability of the device, and accumulating and dissipating part of the seismic energy. When the seismic wave ends, the first reset rod 14 and the second reset rod 19 use the accumulated energy to restore to their original state, achieving the effect of self-reset;

[0037] The lower branch 2 includes a sliding frame 21, and a third reset rod 22 is provided between the sliding frame 21 and the friction box 11 for limiting, resetting and supporting the horizontal torsion of the lower branch 2. A sliding block 23 is provided in the sliding frame 21 for limiting sliding. The sliding block 23 is movably connected to the friction box 11 through a universal transmission assembly 24. Specifically, the lower branch 2 provides horizontal torsion resistance for the structure. The third reset rod 22 is arranged obliquely between the bottom friction box 11 and the sliding frame 21, and multiple reset rods are arranged evenly. Under the action of an earthquake, the upper branch 1 twists with the structure and transmits the behavior trend to the third reset rod 22 and the universal transmission assembly 24. The third reset rod 22 pulls the upper branch 1 to restrain the vertical pulling tendency of the upper branch 1 and provide a vertical boundary condition for it; when the upper branch 1 and the lower branch 2 are twisted or translated beyond the allowable range of activity, the third reset rod 22 is stretched to further dissipate the seismic energy; when the seismic energy gradually subsides, the third reset rod 22 can use the absorbed and stored tension to achieve the self-reset of the structure in the horizontal direction; and the sliding block 23, under the cooperation of the universal transmission assembly 24, transmits the action to the sliding block 23, so that it can slide in the sliding frame 21 to further dissipate the seismic energy.

[0038] Furthermore, in a specific implementation, the first reset rod 14 and the second reset rod 19 provided in the embodiment of the present invention both include a reset stretching section 141 and a transition section 142 and a screw section 143 symmetrically arranged at both ends of the reset stretching section 141; specifically, the first reset rod 14 and the second reset rod 19 can be made of alloy material with good toughness and load-bearing capacity, the diameter of the screw section 143 is larger than the diameter of the reset stretching section 141, and the screw section 143 is connected with a retaining ring 15, a first anchoring nut 16, a spring washer 17 and a second anchoring nut 18 in sequence from the inside to the outside, and the retaining ring 15 abuts against the side wall of the friction block 12 or the friction box 11; it should be noted that the friction block 12 is movably sleeved on the first reset rod 14 and the second reset rod 19, and the first reset rod 14 and the second reset rod 19 are dumbbell-shaped as a whole, with a middle reset The stretching section 141 provides the ability to dissipate energy through stretching, and the transition section 142 is in the shape of a truncated cone, which smoothly transitions the reset stretching section 141 to the screw section 143 to avoid the concentration of tensile stress at the cross-section mutation point. The clamping ring 15, the first anchor nut 16, the spring washer 17 and the second anchor nut 18 connected to the screw sections 143 at both ends provide boundary conditions for effective tensile accumulation and energy dissipation for the first reset rod 14 and the second reset rod 19; after the pre-tightening force is initially applied to the second anchor nut 18, the spring washer 17 is initially compressed, but there is still room for further compression, so as to avoid excessive impact force on the first reset rod 14 and the second reset rod 19, and ensure that the spring washer 17 can still provide a buffer distance for the first reset rod 14 and the second reset rod 19 under the action of an earthquake, perform secondary buffering, further dissipate earthquake energy, and improve the reliability of the device.

[0039] Furthermore, in a specific implementation, the third reset rod 22 provided in the embodiment of the present invention includes a pull rod 221 and anchor heads 222 arranged at both ends of the pull rod 221. The pull rod 221 is connected to the anchor head 222 through a cable 223. The anchor head 222 at one end is connected to the top of the sliding frame 21, and the anchor head 222 at the other end is connected to the bottom of the friction box 11. It should be noted that the pull rod 221 can be made of an alloy material with good toughness and bearing capacity. The cable 223 between the pull rod 221 and the anchor head 222 has a certain tension margin reserved, allowing a certain relative torsion between the upper branch 1 and the lower branch 2. When the allowable torsion range is exceeded, the cable 223 starts to act and provide effective stiffness, and continuously stretches the pull rod 221 to dissipate seismic energy.

[0040] Furthermore, in a specific implementation, the universal transmission assembly 24 provided in the embodiment of the present invention includes a transmission rod 241 and a universal joint 242 arranged at the end of the transmission rod 241, and the universal joint 242 is rotatably connected to the sliding block 23 and the friction box 11; it should be noted that the universal joint 242 can adopt an existing structure, which is composed of two hinged connecting parts, and the universal joint 242 and the transmission rod 241 are combined for transmission to realize the sliding of the sliding block 23. Specifically, this embodiment preferably adopts two transmission rods 241 connected by universal joints 242 to form the universal transmission assembly 24, and the universal joint 242 is used to provide an effective rotation path for the transmission rod 241, so as to cooperate to complete the twisting and sliding actions, and finally transmit the action to the sliding block 23 to realize horizontal sliding in the sliding frame 21.

[0041] Furthermore, in a specific implementation, the sliding frame 21 provided in the embodiment of the present invention includes a central block 211 and double-layer plates 212 arranged horizontally and evenly around the central block 211, and a sliding groove 210 is provided in the double-layer plates 212 for limiting the sliding connection of the sliding block 23; specifically, in the present embodiment, the double-layer plates 212 are arranged in four different directions along the outer periphery of the central block 211 in a cross shape, and the double-layer plates 212 on each side are connected as a whole through the central block 211, and each double-layer plate 212 is hollow in the middle and a sliding groove 210 is provided on the inner side for limiting the sliding of the sliding block 23.

[0042] Furthermore, in a specific implementation, the universal transmission assembly 24 provided in the embodiment of the present invention is detachably connected to the sliding block 23 and / or the friction box 11, and the third reset rod 22 is detachably connected to the sliding frame 21 and / or the friction box 11; it should be noted that the universal transmission assembly 24 can be independently formed as a whole, or it can be independently formed as a whole with the sliding block 23, or it can be independently formed as a whole with the bottom friction box 11; the third reset rod 22 can be independently formed as a whole, or it can be independently formed as a whole with the sliding frame 21, or it can be independently formed as a whole with the bottom friction box 11; specifically, for example, under the action of an earthquake, if the upper branch 1 suffers durability damage caused by long-term service, by setting a strength path, replacing the universal joint 242 or the cable 223 can achieve rapid standardized replacement of the upper branch 1 after the earthquake.

[0043] Furthermore, in a specific implementation, the same friction box 11 provided in the embodiment of the present invention is provided with two friction blocks 12, and a guide groove 110 for accommodating the horizontal sliding of the friction block 12 is provided in the friction box 11; specifically, the upper branch 1 as a whole is constructed similar to a scissor-type structure, which helps to evenly distribute the load borne, reduce local wear and tear, and extend the service life; the guide groove 110 provided in the top friction box 11 opens downward, the guide groove 110 provided in the bottom friction box 11 opens upward, and the guide groove 110 provided in the middle part of the friction box 11 is open on both sides; correspondingly, the friction blocks 12 is provided with a support ear for articulating the connecting rod 13, the support ear of the friction block 12 in the top friction box 11 is arranged downward, the support ear of the friction block 12 in the bottom friction box 11 is arranged upward, and the support ears of the friction block 12 in the middle friction box 11 are arranged at the upper and lower ends of the friction block 12. In addition, the inner wall of the guide groove 110 is detachably provided with a friction plate. Specifically, the guide groove 110 is connected with a friction plate on the friction contact surface with the friction block 12 by gluing or clamping. The friction plate can be made of conventional metal, rubber or plastic materials, which is convenient for replacement after abrasion to ensure the effectiveness of friction energy consumption.

[0044] Furthermore, in a specific implementation, a connecting earring 10 is provided at the top center of the top friction box 11 provided in the embodiment of the present invention for connecting to the existing structure.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, 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 support anti-slip self-resetting anti-overturning device, characterized in that: include: An upper branch (1), the upper branch (1) comprising a stacked friction box (11), wherein a friction block (12) is horizontally slidably arranged in the friction box (11), a connecting rod (13) is arranged between adjacent friction boxes (11), and both ends of the connecting rod (13) are respectively hinged to the friction blocks (12) vertically staggeredly arranged in adjacent friction boxes (11), and the friction box (11) is provided with a first reset rod (14) and a second reset rod (19) for limiting and resetting the friction blocks (12), the first reset rod (14) being arranged between the friction box (11) and the friction block (12), and the second reset rod (19) being arranged between adjacent friction blocks (12) in the same friction box (11); The lower branch (2) comprises a sliding frame (21), a third reset rod (22) is arranged between the sliding frame (21) and the friction box (11) for limiting, resetting and supporting the horizontal torsion of the lower branch (2), a sliding block (23) is arranged in the sliding frame (21) for limiting and sliding, and the sliding block (23) is movably connected to the friction box (11) through a universal transmission assembly (24).

2. A support anti-slip self-resetting anti-overturning device as claimed in claim 1, characterized in that: The first reset rod (14) and the second reset rod (19) both comprise a reset stretching section (141) and a transition section (142) and a screw section (143) symmetrically arranged at two ends of the reset stretching section (141).

3. A support anti-slip self-resetting anti-overturning device as claimed in claim 2, characterized in that: The screw rod segment (143) is sequentially connected with a snap ring (15), a first anchor nut (16), a spring washer (17) and a second anchor nut (18) from the inside to the outside, and the snap ring (15) abuts against the side wall of the friction block (12) or the friction box (11).

4. The support anti-slip self-resetting anti-overturning device according to claim 1, characterized in that: The third reset rod (22) comprises a pull rod (221) and anchor heads (222) arranged at both ends of the pull rod (221); the pull rod (221) is connected to the anchor head (222) via a pull rope (223); one end of the anchor head (222) is connected to the top of the sliding frame (21); and the other end of the anchor head (222) is connected to the bottom of the friction box (11).

5. The support anti-emptying self-resetting anti-overturning device according to claim 1, characterized in that: The universal transmission assembly (24) comprises a transmission rod (241) and a universal joint (242) arranged at the end of the transmission rod (241); the universal joint (242) is rotationally connected to the sliding block (23) and the friction box (11).

6. The support anti-slip self-resetting anti-overturning device according to claim 1, characterized in that: The sliding frame (21) comprises a central block (211) and double-layer plates (212) uniformly arranged horizontally around the central block (211), wherein a sliding groove (210) for limiting sliding connection with the sliding block (23) is provided in the double-layer plates (212).

7. A support anti-emptying self-resetting anti-overturning device as claimed in claim 1, characterized in that: The universal transmission assembly (24) is detachably connected to the sliding block (23) and / or the friction box (11), and the third reset rod (22) is detachably connected to the sliding frame (21) and / or the friction box (11).

8. The support anti-emptying self-resetting anti-overturning device according to claim 1, characterized in that: Two friction blocks (12) are arranged in the same friction box (11), and a guide groove (110) for accommodating the horizontal sliding of the friction blocks (12) is provided in the friction box (11).

9. A support anti-emptying self-resetting anti-overturning device as claimed in claim 8, characterized in that: The inner wall of the guide groove (110) is detachably provided with a friction plate.

10. The support anti-slip self-resetting anti-overturning device according to claim 1, characterized in that: A connecting earring (10) is provided at the top center of the friction box (11) of the top layer.

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