Built-in disc spring self-resetting metal damper

Abstract

The application discloses a built-in disc spring self-resetting metal damper, which comprises an outer steel pipe, an inner steel pipe, a disc spring device, laminated rubber, a stiffened steel plate and an anchoring part. The lower end of the outer steel pipe is connected with a damper lower connecting steel plate; the upper and lower ends of the inner steel pipe are connected with a damper bottom steel plate and an upper connecting steel plate respectively; the disc spring device is sleeved between a top steel plate and a first stiffened steel plate and between a second stiffened steel plate and the bottom steel plate; laminated rubber is arranged between the two stiffened steel plates; the anchoring part is connected by high-strength bolts between a pre-buried steel plate and a damper connecting steel plate, and each part is independently processed and formed. Through reasonable connection design of each structural element, the inner steel pipe and the outer steel pipe of the damper jointly bear external load, the disc spring device is always in a compressed state to provide restoring force, and each part provides additional energy dissipation in the elastic-plastic deformation process, so that the post-earthquake residual deformation and damage of structural members can be effectively reduced, and the recoverability of post-earthquake functions is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a self-resetting metal damper, belonging to the technical field of energy dissipation and shock absorption. BACKGROUND

[0002] The energy dissipation performance of structural members plays a crucial role in the seismic resistance of building structures. Traditional seismic structures often resist seismic action and dissipate seismic energy by utilizing the load-carrying capacity and elastic-plastic deformation capacity of the structure itself. When the seismic action exceeds the yield load-carrying capacity of the structure, the structure resists the earthquake through plastic deformation at the plastic hinge location and dissipates the seismic energy input into the structure using the hysteresis energy of the plastic hinge. In actual engineering, the plastic hinge may not be located at the expected position, or the plastic hinge may not achieve the expected deformation capacity, which may cause the building structure to suffer severe damage or even collapse. In addition, traditional reinforced concrete structures will produce large residual deformation after an earthquake, making it impossible to repair the structure. Therefore, seismic energy dissipation measures and self-resetting technology are particularly important for building structures.

[0003] With the development of the construction industry, one of the important measures for energy dissipation and shock absorption of building structures is to install energy dissipation dampers on structural members to form an energy dissipation and shock absorption structural system with the original members. Under seismic action, the energy dissipation and shock absorption structure dissipates or absorbs the input seismic energy through the damper, reducing the seismic response of the structure, and also needs to have recoverable functions after an earthquake to reduce damage to the building structure.

[0004] Traditional dampers have many shortcomings: viscoelastic dampers are prone to aging; viscous dampers are prone to liquid leakage; existing metal dampers have high stiffness and are mostly one-way energy dissipation, with non-recoverable residual deformation after an earthquake. Therefore, the present application proposes a self-resetting metal damper with built-in disc springs, which is applied to structural members to achieve multiple goals of energy dissipation and shock absorption during an earthquake, self-resetting function, and post-earthquake repair and replacement. SUMMARY

[0005] To solve the problems in the prior art, the present application provides a self-resetting metal damper with built-in disc springs, which is designed by reasonably connecting various structural elements, so that the inner steel pipe and the outer steel pipe of the damper jointly bear the external load, the disc spring device is always in a compressed state to provide restoring force, and each component provides additional energy dissipation during elastic-plastic deformation, effectively reducing the post-earthquake residual deformation and damage of the structural member, thereby improving the recoverability of its post-earthquake function.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] The application provides a built-in disc spring self-resetting metal damper, which comprises an outer steel pipe, an inner steel pipe, a disc spring device, laminated rubber, a stiffened steel plate and an anchoring part.

[0008] Further, the outer steel pipe is a hollow cuboid, the lower part is connected with the damper connecting steel plate, and the upper cover plate is provided with a circular hole, so that the inner steel pipe can be inserted; in addition, the outer steel pipe can bear external load, can enhance the integrity of the damper, can avoid the influence of external environment on the inner disc spring device, and can deform the laminated rubber.

[0009] Further, the inner steel pipe is a hollow circular pipe, the upper and lower ends are connected with the damper upper connecting steel plate and the bottom steel plate respectively, the upper end is welded at the center of the damper upper connecting steel plate, and the lower end is welded after being inserted into the circular hole of the bottom steel plate; the inner steel pipe bears load together with the outer steel pipe when being compressed, bears load and transmits the load to the disc spring device when being pulled, and dissipates a large amount of energy in the deformation process of bearing load, so that the energy dissipation function of the structure can be realized.

[0010] Further, the disc spring device is a single disc spring in the shape of a conical disc, which is a main restoring element, and a circular hole is arranged at the center to facilitate the insertion of the internal steel tube, and other components are used to assist in compressing the disc spring and transmitting the load. The disc spring is usually combined in the form of superposition, opposition and composite combination, and the elastic bearing capacity and deformation of the disc spring device are related to the free height and thickness of the single disc spring. In the design, a disc spring with a larger outer diameter should be selected to reduce the number of combined pieces. The superposition of multiple disc springs can multiply the bearing capacity and deformation capacity of the damper, and provide a larger restoring force for the component. In addition, the superposition surface of the superposed disc spring will generate friction, and the disc spring will provide additional energy dissipation during the compression and deformation recovery process. In order to ensure the reliable operation of the disc spring, the disc spring supporting surface should be in contact with the outer periphery of the disc spring. Under the action of axial tension, the internal steel tube transmits the load to the disc spring device and the laminated rubber through the bottom steel plate, and the disc spring device is compressed and provides a reverse restoring force; under the action of axial pressure, the connecting steel plate transmits the load to the internal and external steel tubes, and at the same time, the top steel plate extrudes the disc spring device and the laminated rubber during the compression and deformation of the damper, the disc spring device is compressed and provides a reverse restoring force, realizing the self-resetting function of the structure.

[0011] Further, the laminated rubber is composed of multiple layers of rubber pads, each layer of rubber pad has the same size and thickness, and a circular hole is arranged in the middle of the rubber pad to facilitate the insertion of the internal steel tube; the laminated rubber mainly bears pressure and transmits it to the disc spring device, and the laminated rubber can provide additional energy dissipation for the component during the displacement process of extrusion and deformation by friction with the inner wall of the external steel tube.

[0012] Further, the stiffening steel plate is a flat thick steel plate, which plays the role of stiffening plate to prevent the internal steel tube from buckling, and also serves as a disc spring baffle to transmit the load and make the disc spring bear force uniformly. A circular hole is arranged in the middle of the stiffening steel plate to facilitate the insertion of the internal steel tube.

[0013] Further, the connecting steel plate is a flat thick steel plate, and bolt through holes are arranged at the corners and aligned with the bolt hole positions of the embedded steel plate, which facilitates the connection with the embedded steel plate through high-strength bolts and enables the replacement of the damper after the earthquake.

[0014] Further, the embedded steel plate is a flat thick steel plate, and bolt through holes are arranged at the corners and aligned with the bolt hole positions of the connecting steel plate, and an internal threaded sleeve is welded at the bolt hole to facilitate the connection with the connecting steel plate through high-strength bolts; in addition, the embedded steel plate needs to be welded with anchoring steel bars.

[0015] Further, the high-strength bolt passes through the damper connecting steel plate and the embedded steel plate bolt hole, and is screwed into the internal threaded sleeve welded on the embedded steel plate, realizing the connection of the damper connecting steel plate and the embedded steel plate.

[0016] Further, the internal thread sleeve is welded at the embedded steel plate bolt hole, and the internal thread is matched with the high-strength bolt thread.

[0017] Overall, compared with the prior art, the above technical solutions conceived by the present application mainly have the following technical advantages:

[0018] 1. The present application uses internal and external steel pipes with good plastic deformation ability as the main body of the energy dissipation unit, laminated rubber as the secondary energy dissipation and force transmission unit, and disc spring devices that mainly bear pressure to provide restoring force, achieving the dual goals of energy dissipation and self-resetting.

[0019] 2. The metal damper of the present application has good overall performance, and each unit component works independently and cooperatively, which is better than other metal dampers and does not have the problem of complete failure of the damper due to local damage of the unit component.

[0020] 3. The metal damper of the present application effectively connects the connecting steel plate of the damper with the embedded part through high-strength bolts and internal thread sleeves, which can realize post-earthquake repair and replacement of the damper.

[0021] 4. The built-in spring friction type metal damper designed in the present application is widely available, simple in structure, clear in force transmission, and low in cost, and has a broad application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The overall schematic diagram provided for the preferred example of the present application.

[0023] Figure 2 The internal structure schematic diagram provided for the preferred example of the present application.

[0024] Figure 3 The internal steel pipe connection structure schematic diagram provided for the preferred example of the present application.

[0025] Figure 4 The external steel pipe structure schematic diagram provided for the preferred example of the present application.

[0026] Figure 5 The internal steel pipe structure schematic diagram provided for the preferred example of the present application.

[0027] Figure 6 The disc spring device structure schematic diagram provided for the preferred example of the present application.

[0028] Figure 7 The laminated rubber structure schematic diagram provided for the preferred example of the present application.

[0029] Figure 8 The internal steel plate structure schematic diagram provided for the preferred example of the present application.

[0030] Figure 9 The schematic diagram of the embedded anchor structure is provided as a preferred example of the present application.

[0031] In all the drawings, the same reference signs are used to represent the same elements, wherein:

[0032] 1-outer steel tube; 2-internal steel tube; 3-damper connecting steel plate; 4-bottom steel plate; 5-top steel plate; 6-stiffening steel plate; 7-disc spring device; 8-laminated rubber; 9-embedded steel plate; 10-internal threaded sleeve; 11-anchoring steel bar; 12-high-strength bolt. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application clearer and more comprehensible, the following will combine the accompanying drawings to further describe the present application. Figure 1 The accompanying drawings Figure 9 and examples, it should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other. Embodiment

[0034] As Figures 1-9 shown, the present embodiment 1 provides a built-in disc spring self-resetting metal damper, which comprises an outer steel tube, an internal steel tube, a disc spring device, laminated rubber, a stiffening steel plate and an anchoring component, wherein:

[0035] The outer steel tube 1 is a hollow cuboid as a whole, the lower part is welded with the connecting steel plate 3, and the upper part cover plate has a circular hole for facilitating the insertion of the internal steel tube 2, and the outer steel tube 1 bears the tensile force and pressure under the action of external load.

[0036] The internal steel tube 2 is a hollow circular tube as a whole, the upper and lower ends are welded with the connecting steel plate 3 and the bottom steel plate 4 respectively, and it bears the load together with the outer steel tube 1 under compression, and it can transmit the load to the disc spring device 7 under tension.

[0037] The single disc spring of the disc spring device 7 is in the shape of a conical disc, and a circular hole is provided at the center for facilitating the insertion of the internal steel tube 2. The multiple disc springs are stacked to form the disc spring device 7 as the main resetting element, and the disc spring device 7 is always in a state of compression under the action of external load, which can provide a large restoring force for the component. In addition, the stacked surfaces between the disc springs will generate friction during the force process, which can provide additional energy dissipation for the component.

[0038] The laminated rubber 8 is made of multiple layers of rubber pads with the same size and thickness, and a circular hole is provided in the middle of the rubber pad for facilitating the insertion of the internal steel tube 2. The laminated rubber 8 mainly bears the pressure and transmits the load to the disc spring device 7, and the friction with the inner wall of the outer steel tube 1 during the displacement process of extrusion deformation can provide additional energy dissipation for the component.

[0039] The stiffening steel plate 6 is a planar thick steel plate, which can play a role of stiffening plate to prevent buckling of the internal steel pipe 2 and can also act as a disc spring baffle to transfer load to make the disc spring device 7 bear force evenly.

[0040] The connecting steel plate 3 is a planar thick steel plate, bolt through holes are arranged at four corners of the connecting steel plate 3, and the bolt through holes are aligned with bolt hole positions of the embedded steel plate 9, so that the connecting steel plate 3 and the embedded steel plate 9 can be connected through high-strength bolts 12, and the replaceability of the damper after an earthquake can be realized.

[0041] The embedded steel plate 9 is a planar thick steel plate, bolt through holes are arranged at four corners of the embedded steel plate 9, and the bolt through holes are aligned with bolt hole positions of the connecting steel plate 3, and an internal thread sleeve 10 is welded at the bolt hole, so that the embedded steel plate 9 and the connecting steel plate 3 can be connected through high-strength bolts 12; in addition, the embedded steel plate 9 needs to be welded with anchoring steel bars 11.

[0042] The built-in disc spring self-resetting metal damper provided by the application has the following action mechanism:

[0043] The load borne by the damper is mainly axial tension and pressure. Under the action of the axial tension, the internal steel pipe 2 transfers the load to the disc spring device 7 and the laminated rubber 8 through the bottom steel plate 4, the disc spring device 7 provides a reverse restoring force while being under pressure, and the self-resetting function of the structure is realized, in addition, the disc spring device 7 can transfer the load to the external steel pipe 1 through the top steel plate 5 when being under pressure, and the external steel pipe 1 is under tension; under the action of the axial pressure, the load is transferred to the external steel pipe 1 and the internal steel pipe 2 through the connecting steel plate 3, and the disc spring device 7 is pressed to provide a reverse restoring force while being under pressure, and the self-resetting function of the structure is realized. While each unit component in the damper plays a role to produce displacement changes, it can also absorb energy to realize energy dissipation of the structure.

[0044] In summary, the built-in disc spring self-resetting metal damper designed by the application has a clear load transmission path and action mechanism, uses the internal and external steel pipes as the main body of the energy dissipation unit, uses the laminated rubber as a secondary energy dissipation and force transmission unit, and uses the disc spring device mainly bearing pressure to provide a restoring force, so that the dual goals of energy dissipation and self-resetting can be realized; at the same time, the damper and the embedded part are effectively connected through high-strength bolts and internal thread sleeves, so that the replaceability of the damper after an earthquake can be realized; in addition, the damper can be assembled and produced in batches in a factory, and can also be assembled on a construction site, so that the damper has good applicability, high cost performance, and broad application prospects.

[0045] The above merely describes the conceptual part of the specific embodiment of the present application, but the embodiment of the present application is not limited thereto, as long as other forms of modification, replacement or change of the above-mentioned application are made according to the conventional technical knowledge and practices in the field without changing the basic technical idea of the present application, which all belong to the protection scope of the present application.

Claims

1. A built-in disc spring self-resetting metallic damper, characterized by, The device comprises an outer steel pipe, an inner steel pipe, a disc spring device, laminated rubber, damper connecting steel plates, stiffening steel plates and anchoring components; the damper connecting steel plates comprise upper and lower damper connecting steel plates; the lower end of the outer steel pipe is connected with the lower damper connecting steel plate; the upper and lower ends of the inner steel pipe are connected with the bottom steel plate and the upper damper connecting steel plate, respectively; the top steel plate, the disc spring device, the laminated rubber and the stiffening steel plates are all provided with holes and can be movably sleeved on the inner steel pipe; the stiffening steel plates are provided with two; the disc spring device is sleeved between the top steel plate and the first stiffening steel plate and between the second stiffening steel plate and the bottom steel plate; the laminated rubber is arranged between the two stiffening steel plates; the anchoring components are connected by high-strength bolts; each component is independently processed and formed. The outer steel pipe is a hollow cuboid, the lower part is connected with the lower damper connecting steel plate, and the upper part is provided with a circular hole for the insertion of the inner steel pipe; the outer steel pipe can bear external load, enhance the integrity of the damper, avoid the influence of external environment on the inner disc spring device and constrain the deformation of the laminated rubber; the laminated rubber mainly bears pressure and transmits it to the disc spring device; the laminated rubber provides additional energy dissipation by friction with the inner wall of the outer steel pipe during extrusion and deformation. The inner steel pipe is a hollow circular pipe, the upper and lower ends of which are connected with the upper damper connecting steel plate and the bottom steel plate, respectively; the upper end of the inner steel pipe is welded at the center of the upper damper connecting steel plate, and the lower end is inserted into the circular hole of the bottom steel plate and welded; the inner steel pipe bears load together with the outer steel pipe under pressure and transmits the load to the disc spring device under tension. The single disc spring of the disc spring device is conical and is the main restoring element; the center of the disc spring is provided with a circular hole for the insertion of the inner steel pipe; the commonly used combination forms of the disc spring include superposition, matching and compound combination; the elastic bearing capacity and deformation of the disc spring device are related to the free height and thickness of the single disc spring; in the design, large-diameter disc springs are selected to reduce the number of combined pieces; the laminated rubber is arranged between the two stiffening steel plates; the laminated rubber provides additional energy dissipation by friction during extrusion and deformation of the disc spring; the disc spring support surface is in contact with the outer periphery of the disc spring; under the action of axial tension, the inner steel pipe transmits the load to the disc spring device and the laminated rubber through the bottom steel plate; the disc spring device is compressed and provides a reverse restoring force; under the action of axial pressure, the damper connecting steel plate transmits the load to the inner and outer steel pipes; meanwhile, the damper is compressed and deformed, the top steel plate extrudes the disc spring device and the laminated rubber, the disc spring device is compressed and provides a reverse restoring force to realize self-resetting.

2. The self-resetting metallic damper with built-in disc spring according to claim 1, characterized in that The laminated rubber is made of multiple layers of rubber pads; each layer of rubber pad has the same size and thickness, and a circular hole is formed in the middle of the rubber pad for the insertion of the inner steel pipe.

3. The self-resetting metallic damper with built-in disc spring according to claim 1, characterized in that, The stiffening steel plate is a flat thick steel plate, which plays the role of stiffening plate to prevent the inner steel pipe from buckling and acts as a disc spring baffle to transmit load and make the disc spring bear force uniformly; a circular hole is formed in the middle of the stiffening steel plate for the insertion of the inner steel pipe.

4. The self-resetting metallic damper with built-in disc spring according to claim 1, characterized in that, The damper connecting steel plate is a planar thick steel plate, bolt through holes are formed at four corners, and are aligned with bolt hole positions of the embedded steel plate.

5. The self-resetting metallic damper with built-in disc spring according to claim 1, characterized in that, The embedded steel plate is a planar thick steel plate, bolt through holes are formed at four corners, and are aligned with bolt hole positions of the damper connecting steel plate, inner thread sleeves are welded at the bolt holes, and the damper connecting steel plate is connected to the embedded steel plate through high-strength bolts; in addition, anchor steel bars are welded on the embedded steel plate.

6. The self-resetting metallic damper with built-in disc spring according to claim 5, characterized in that The high-strength bolt passes through the damper connecting steel plate and the embedded steel plate bolt hole, is screwed into the inner thread sleeve welded on the embedded steel plate, and realizes connection of the damper connecting steel plate and the embedded steel plate.

7. The self-resetting metallic damper with built-in disc spring according to claim 6, characterized in that The inner thread sleeve is welded at the embedded steel plate bolt hole, and an internal thread is matched with a high-strength bolt thread.

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