Viscoelastic self-resetting damper

Abstract

The viscoelastic self-resetting damper comprises two parallel auxiliary plates, a first end plate and a second end plate are arranged between the two auxiliary plates, the first end plate is fixed in a gap between the two auxiliary plates, and the second end plate is fixed in a gap between the two auxiliary plates. The second end plate is movably arranged in the gap between the two auxiliary plates and can slide in the direction of the first end plate, a viscoelastic plate is further arranged in the gap between the second end plate and the auxiliary plates, and steel strands are installed outside the auxiliary plates through angle steel. The steel strands on the outer sides of the two auxiliary plates penetrate through the angle steel, the second end plate and the auxiliary plates through the sliding screws to keep connection and deform along with sliding of the second end plate. According to the damper, the viscoelastic plate can generate shear deformation under the action of external force through the arrangement of the viscoelastic plate and the steel strand, so that the acting force of the external force on the auxiliary plate is counteracted, the damping purpose is achieved, meanwhile, the steel strand is combined to pull the viscoelastic plate to return to the original position when the external force disappears, and self-resetting of the damper is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering anti -seismic technical field, specifically is a kind of viscoelastic self-resetting damper. BACKGROUND

[0002] In the field of construction engineering, especially in the face of natural disasters such as earthquakes, energy dissipation support devices play a crucial role in improving the seismic performance and overall stability of buildings. Traditional energy dissipation support devices, such as metal yield dampers and friction dampers, can effectively absorb and dissipate seismic energy to some extent, but they often have problems such as complex structure, high cost, limited reset ability, etc.

[0003] To solve these problems, researchers have begun to explore the use of viscoelastic materials to develop new energy dissipation support devices. Viscoelastic materials can exhibit unique displacement and velocity characteristics when subjected to external forces, which enables them to effectively absorb and dissipate energy during deformation.

[0004] However, despite the promising prospects of viscoelastic materials in energy dissipation support devices, existing energy dissipation support devices based on viscoelastic materials still have some shortcomings. For example, the design of some devices is too complex, resulting in high manufacturing and installation costs; some devices still need to improve in terms of energy dissipation efficiency and reset performance; some devices are not adaptable enough to different seismic wave spectra, limiting their application range in actual engineering. SUMMARY

[0005] Therefore, in order to solve the above problems, the utility model provides a kind of viscoelastic self-resetting damper, the second end plate can be guaranteed to slide linearly under the action of external force by setting the connection mode of the second end plate on the vice plate, and the viscoelastic plate between the second end plate and the vice plate can offset the force acting on the vice plate when the second end plate slides, so as to achieve the purpose of shock absorption. Combined with the steel strand on the outer side of the vice plate, the steel strand can be deformed by the sliding of the second end plate, which can ensure that the second end plate returns to its original position under the restoring force of the steel strand when the external force is lost, thereby realizing self-resetting.

[0006] The utility model is realized in this way, a kind of viscoelastic self-resetting damper is constructed, including two parallelly arranged vice plates, first end plate and second end plate are arranged between the two vice plates, the first end plate is fixed in the gap between the two vice plates, the second end plate is movably arranged in the gap between the two vice plates and can slide along the direction of the first end plate, viscoelastic plate is further arranged between the gap of the second end plate and the vice plate, steel strand is installed on the outside of the vice plate through angle steel, the steel strand on the outer side of the two vice plates is connected by sliding screw rod through angle steel and second end plate and vice plate and deforms along with the sliding of second end plate.

[0007] Specifically, the auxiliary plate is provided with a sliding hole and a circular hole, and the first end plate is fixed on the auxiliary plate through the combination of the circular hole and the nut.

[0008] Specifically, the second end plate is provided with a long hole matched with the sliding hole of the auxiliary plate, one end of the angle steel is attached to the auxiliary plate and provided with a circular hole matched with the sliding hole, the other end of the angle steel is provided with a through hole for mounting the steel strand, and the sliding screw passes through the circular hole of the angle steel, the sliding hole of the auxiliary plate and the long hole of the second end plate and is matched with the nut to connect the steel strands outside the two auxiliary plates.

[0009] Specifically, the steel strand is fixed on the angle steel through the combination of the through hole and the nut.

[0010] Specifically, a gasket is arranged between the gap between the first end plate and the auxiliary plate, the gasket is sleeved on the outer end of the fixing screw, and the thickness of the gasket is consistent with the thickness of the viscoelastic plate.

[0011] Specifically, the viscoelastic plate is made of viscoelastic material.

[0012] Compared with the prior art, the damper has the following advantages:

[0013] 1. The damper can ensure the linear sliding of the second end plate under the action of external force through the connection mode of the second end plate on the auxiliary plate, and the viscoelastic plate between the second end plate and the auxiliary plate can offset the force acting on the auxiliary plate when the second end plate slides, so as to realize the purpose of shock absorption.

[0014] 2. The damper can ensure that the second end plate remains in tension when sliding in any direction along a straight line through the reasonable connection mode of the steel strand, so as to ensure that the second end plate can be restored to its original position through the restoring force of the steel strand, thereby realizing self-resetting.

[0015] 3. The end plate, the auxiliary plate, the angle steel and the steel strand in the damper are connected by bolts, which is convenient for inspection and maintenance after the occurrence of an earthquake event, saves a lot of time cost, and is simple to assemble and convenient for maintenance and replacement after the occurrence of an earthquake event. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification, and are used together with the specific embodiments of the present application to explain the present application, but do not constitute any limitation on the present application. In the drawings:

[0017] Figure 1This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0019] Figure 3 This is a top view schematic diagram of the present invention;

[0020] Figure 4 for Figure 3 Schematic diagram of the structure of section AA in the middle;

[0021] Figure 5 for Figure 3 Schematic diagram of the structure of the middle BB section;

[0022] Figure 6 This is a schematic diagram of the steel strand structure in this utility model;

[0023] Figure 7 This is a schematic diagram of the sub-plate in this utility model;

[0024] Figure 8 This is a schematic diagram of the gasket structure in this utility model;

[0025] Figure 9 This is a schematic diagram of the structure of the second end plate in this utility model;

[0026] Figure 10 This is a schematic diagram of the structure of the first end plate in this utility model;

[0027] Figure 11 This is a schematic diagram of the structure of the fixing screw in this utility model;

[0028] Figure 12 This is a schematic diagram of the viscoelastic plate component in this utility model;

[0029] Figure 13 This is a schematic diagram of the angle steel structure in this utility model;

[0030] Figure 14 This is a schematic diagram of the nut structure in this utility model;

[0031] In the diagram: 1. Sub-plate; 2. First end plate; 3. Second end plate; 4. Washer; 5. Fixing screw; 6. Viscoelastic plate; 7. Angle steel; 8. Nut; 9. Sliding screw; 10. Steel strand. Detailed Implementation

[0032] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of this utility model and are not intended to limit this utility model in any way. The accompanying drawings in this utility model are only for illustrative purposes and to facilitate understanding of the embodiments and are not intended to limit this utility model in any way.

[0033] It should be noted that the structures, proportions, sizes, etc. shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0034] As described in the background section, some energy-consuming support devices are designed to be too complex, resulting in high manufacturing and installation costs; some devices still need improvement in energy efficiency and resetting performance; and some devices are not adaptable enough to different seismic wave spectra, which limits their application scope in practical engineering.

[0035] For the reasons stated above, and to address these shortcomings, please refer to the appendix. Figure 1 ~Appendix Figure 5 This utility model provides a viscoelastic self-resetting damper, comprising two parallel sub-plates 1, with a first end plate 2 and a second end plate 3 disposed between the two sub-plates 1. The first end plate 2 is fixed in the gap between the two sub-plates 1, and the second end plate 3 is movably disposed within the gap between the two sub-plates 1 and is allowed to slide along the direction of the first end plate 2. A viscoelastic plate 6 (see attached diagram) is also disposed between the second end plate 3 and the sub-plates 1. Figure 2 and attached Figure 12 A steel strand 10 is installed on the outside of the sub-plate 1 via angle steel 7 (in conjunction with the attached...). Figure 2 Appendix Figure 4 and attached Figure 6 As can be seen, the steel strands 10 on the outer sides of the two sub-plates 1 pass through the angle steel 7 and the second end plate 3 and sub-plate 1 via the sliding screw 9 and are connected and deformed as the second end plate 3 slides.

[0036] Please see the appendix Figure 2 and attached Figure 7 Specifically, the sub-plate 1 has a sliding hole and a round hole. The first end plate 2 is fixed to the sub-plate 1 by a fixing screw 5 passing through the round hole and engaging with a nut 8 (see Appendix). Figure 2 Appendix Figure 11 and attached Figure 14 (As can be seen), please refer to the appendix. Figure 2 and attachedFigure 10 A through hole is formed on the first end plate 2 for fixing the screw rod 5.

[0037] Please refer to the attached Figure 2 and attached Figure 9 , in particular, the second end plate 3 is provided with a long hole matched with the sliding hole of the sub-plate 1, one end of the angle steel 7 is attached to the sub-plate 1 and provided with a round hole corresponding to the sliding hole, and the other end of the angle steel 7 is provided with a through hole for installing the steel strand 10 (see attached Figure 2 and attached Figure 13 , it can be seen that), the sliding screw rod 9 passes through the round hole of the angle steel 9, the sliding hole of the sub-plate 1 and the long hole of the second end plate 3, and cooperates with the nut 8 to connect the steel strands 10 on the outer sides of the two sub-plates 1.

[0038] In particular, the steel strand 10 passes through the through hole of the angle steel 7 and is fixed on the angle steel 7 by combining with the nut 8.

[0039] In particular, the number of sliding holes of the sub-plate 1 is related to the mechanism design of the damper. When the second end plate 3 is in tension, the left sliding hole is limited in displacement, and the sliding screw rod 9 moves through the right sliding hole. At the same time, the sliding screw rod 9 is fixed on the angle steel 7 through the nut 8, so that the steel strand 10 is also in tension. When the second end plate 3 is in compression, the right sliding hole is limited in displacement, and the sliding screw rod 9 moves through the left sliding hole. At the same time, the sliding screw rod 9 is fixed on the angle steel 7 through the nut 8, so that the steel strand 10 is also in tension.

[0040] Please refer to the attached Figure 2 and attached Figure 8 , in particular, a gasket 4 is further arranged between the gap between the first end plate 2 and the sub-plate 1, the gasket 4 is sleeved on the outer end of the fixing screw rod 5, and the thickness of the gasket 4 is consistent with the thickness of the viscoelastic plate 6.

[0041] The purpose of arranging the gasket is to facilitate the installation of the viscoelastic plate between the second end plate and the sub-plate, and to facilitate the fixation of the sub-plate and the second end plate through the gasket.

[0042] In particular, the viscoelastic plate 6 is made of viscoelastic material.

[0043] The viscoelastic plate is installed between the second end plate and the sub-plate through a vulcanization process.

[0044] The steel strand can be configured as a prestressed steel strand. Compared with ordinary steel strands, prestressed steel strands are prone to rust and have lower stiffness, so this arrangement can improve the service life of the steel strand.

[0045] The damper in use, when the second end plate 3 is pressed or pulled, pushes the sliding screw 9 to move in the sliding hole of the secondary plate 1, makes the viscoelastic plate 6 produce shear deformation, thereby offsetting the force of the secondary plate 1 when the second end plate 3 slides, achieving the purpose of shock absorption and shock resistance, when the sliding screw 9 moves, the outer end angle steel 7 is pulled to move, thereby making the steel strand 10 stretch and deform, until the sliding screw 9 moves to the end of the sliding hole, at this time the steel strand reaches the maximum tensile deformation, when the second end plate 3 loses external force, the steel strand 10 provides a certain restoring force, drives the second end plate 3 and the sliding screw 9 to move to the original position or a position close to the original position, thereby achieving self-resetting.

[0046] The above description is a detailed description of the preferred and feasible embodiments of the utility model, but the embodiments are not used to limit the patent application range of the utility model, and any equivalent changes or modified changes completed under the technical spirit of the utility model should belong to the patent range covered by the utility model.

Claims

1. A viscoelastic self-centering damper, characterized by: The two parallel sub-plates are provided with a first end plate fixed between the gaps of the two sub-plates and a second end plate movably arranged in the gaps of the two sub-plates and capable of sliding along the direction of the first end plate, and a viscoelastic plate is arranged between the second end plate and the gaps of the sub-plates, and a steel strand is arranged on the outside of the sub-plates through an angle steel, and the steel strands on the outside of the two sub-plates are connected through a sliding screw rod passing through the angle steel, the second end plate and the sub-plates and deformed along with the sliding of the second end plate.

2. A viscoelastic self-centering damper according to claim 1, wherein: Sliding holes and round holes are formed on the sub-plates, and the first end plate is fixed on the sub-plates through the combination of a fixed screw rod passing through the round holes and a nut.

3. A viscoelastic self-centering damper according to claim 2, wherein: Long strip holes matched with the sliding holes of the sub-plates are formed on the second end plate, one end of the angle steel is attached to the sub-plates and provided with round holes corresponding to the sliding holes, the other end of the angle steel is provided with through holes for mounting the steel strands, and the sliding screw rod is connected with the nuts to connect the steel strands on the outside of the two sub-plates together through the round holes of the angle steel, the sliding holes of the sub-plates and the long strip holes of the second end plate.

4. A viscoelastic self-centering damper according to claim 3, wherein: The steel strands are fixed on the angle steel through the combination of the through holes on the angle steel and the nuts.

5. The viscoelastic self-centering damper according to claim 2, wherein: A gasket is arranged between the first end plate and the gaps of the sub-plates, and the gasket is sleeved on the outer end of the fixed screw rod, and the thickness of the gasket is consistent with the thickness of the viscoelastic plate.

6. The viscoelastic self-centering damper according to claim 1, wherein: The viscoelastic plate is made of viscoelastic material.

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