Torsional self-resetting damper and mounting method thereof

Abstract

The invention discloses a torsion self-resetting damper and a mounting method thereof, the torsion self-resetting damper comprises a shell, the shell is provided with an external connecting plate, the external connecting plate is sequentially provided with a connecting part, a torsion energy dissipation part and a self-resetting part along the length direction, the connecting part is connected with a building structural member, and the self-resetting part is connected with the torsion energy dissipation part. Racks are arranged on the upper face or / and the lower face of the torsion energy dissipation part, and reset curved faces are arranged on the upper face or / and the lower face of the self-reset part. A torsion energy consumption device matched with the torsion energy consumption part and a self-resetting device matched with the resetting curved surface are mounted in the shell; according to the torsion damper, the torsion angle of the bar is amplified through the gear, the torsion energy dissipation device and the self-resetting device are arranged, so that the energy dissipation capacity of the torsion bar can be fully exerted under small displacement of the torsion damper, and meanwhile residual deformation of the structure is reduced through the self-resetting device.

Description

Technical Field

[0001] This invention relates to the field of vibration damping devices for building engineering, specifically to a torsional self-resetting damper and its installation method. Background Technology

[0002] Earthquakes, as a sudden and destructive natural disaster, seriously threaten the safety and functionality of buildings. While strong earthquakes occur relatively infrequently, once they do, even if the main structure of a building is not severely damaged, the shaking caused by the earthquake can still lead to significant discomfort and panic among occupants, affecting the building's normal function. Therefore, effectively controlling structural vibrations under minor earthquakes or wind-induced vibrations to improve building comfort and safety has become a crucial issue in the field of earthquake-resistant engineering.

[0003] In structural vibration control, metal dampers have been widely used in various building and bridge projects due to their advantages such as low cost, stable energy dissipation performance, and simple construction. Common metal dampers mostly dissipate energy based on bending, tension, or shear deformation, while metal dampers based on torsional deformation are gradually gaining attention due to their high material utilization and outstanding energy dissipation capacity under uniform stress conditions. However, traditional torsional metal dampers typically require a large torsional angle to reach the yield energy dissipation stage, while structural vibrations in civil engineering are often characterized by small to medium displacements and small rotations. This makes it difficult for these dampers to be fully activated in actual earthquakes, and they are insensitive to small deformation responses, limiting their applicability in conventional engineering projects.

[0004] Furthermore, traditional dampers often undergo plastic deformation during earthquakes, resulting in residual displacement after the earthquake, affecting the normal use of buildings, and requiring high repair costs and long cycles. Therefore, self-resetting structural systems with post-earthquake self-healing capabilities have been extensively studied. Their core objective is to dissipate seismic energy while minimizing structural damage and residual deformation, achieving rapid post-earthquake recovery and usability. However, existing technologies for torsional energy dissipation devices that combine low deformation sensitivity with efficient self-resetting capabilities are still relatively lacking.

[0005] Therefore, there is an urgent need to develop a new type of torsional self-resetting damper. This device should be able to start up and dissipate energy in a timely manner under small and medium displacements, have a good response to small deformations, and have significant self-resetting capabilities, so as to further reduce post-earthquake repair costs and enhance building sustainability while reducing structural vibration and improving user comfort. Summary of the Invention

[0006] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a torsional self-resetting damper and its installation method. The present invention addresses the problems of small torsional angle and large residual deformation after torsion in the existing structure of the torsional damper. By amplifying the torsional angle of the bar through gears, and setting a torsional energy dissipation device and a self-resetting device, the torsional damper can fully utilize the energy dissipation capacity of the torsion bar under small displacement, while reducing the residual deformation of the structure through the self-resetting device.

[0007] On one hand, the present invention provides a torsional self-resetting damper, including a housing, wherein an outer plate is mounted on the housing, and the outer plate is provided with a connecting part, a torsional energy dissipation part and a self-resetting part in sequence along the length direction, wherein the connecting part is connected to a building structural component, the torsional energy dissipation part has a rack on the upper and / or lower surface, and the self-resetting part has a reset surface on the upper and / or lower surface. A torsional energy dissipation device matching the torsional energy dissipation part and a self-resetting device matching the reset surface are installed inside the housing. The torsional energy dissipation device includes a torsional energy dissipation rod and a drive gear. The two ends of the torsional energy dissipation rod are connected to the housing. The drive gear is installed on the torsional energy dissipation rod and meshes with the rack. The torsional energy dissipation device converts the movement of the outer connecting plate along the length direction into the torsion of the torsional energy dissipation rod through the meshing of the rack and the drive gear. The self-resetting device includes a clamping plate that presses against the reset curved surface. The clamping plate has a curved surface that fits against the reset curved surface. The self-resetting device provides reset power to the outer connecting plate after it moves along the length direction by pressing the curved surface of the clamping plate against the self-resetting curved surface.

[0008] Furthermore, the torsional energy dissipation device also includes a torsional fixing plate fixedly connected to the housing, and both ends of the torsional energy dissipation rod are fixedly installed on the torsional fixing plate.

[0009] Furthermore, both ends of the torsional energy dissipation bar are mounted on the torsional fixing plate via fixed gears. The fixed gears are connected to the ends of the torsional energy dissipation bar via gear meshing.

[0010] Furthermore, the torsional energy dissipation rod is made of metal and is detachably connected to the driving gear and the fixed gear, such as by means of a transmission key.

[0011] Furthermore, the curved surface of the clamping plate and the reset surface are lubricated, such as by applying grease. Alternatively, friction material can be added between the curved surface and the reset surface. In practice, when adding friction material, lubrication is not performed; lubrication and adding friction material are two independent processes that are not carried out simultaneously.

[0012] Furthermore, the self-resetting device also includes a high-strength bolt and a disc spring. When the upper and lower surfaces of the reset part have reset curved surfaces, the self-resetting device has two clamping plates, which are connected by high-strength bolts. The disc spring is sleeved on the high-strength bolts to apply preload. When the reset part has a reset surface only on the top or bottom, the self-resetting device has a clamp plate that is installed on the housing by a high-strength bolt, and the disc spring is sleeved on the high-strength bolt to apply a preload.

[0013] Furthermore, external plates are installed at both ends of the housing, with the two external plates installed back to back and maintaining a distance between them.

[0014] Furthermore, the housing includes two outer shell plates that are bolted together, and a fixing plate for fixing a torsion fixing plate is installed inside the outer shell plates.

[0015] On the other hand, the present invention provides a method for installing a torsional self-resetting damper, comprising the following steps: The two clamping plates are matched with the reset curved surfaces of the outer plate, connected by high-strength bolts, and a disc spring is used to apply an appropriate preload to form a self-resetting device. The two ends of the torsion energy dissipation bar are connected to the driving gear and the fixed gear, respectively. The fixed gear is meshed with the torsion fixed plate to form a torsion energy dissipation device. Weld the fixing plate inside the outer shell to the torsion fixing plate of the torsion energy dissipation device, and increase the number of torsion energy dissipation devices as needed; The self-resetting device is clamped by a snap-fit ​​outer shell plate, and the two snap-fit ​​outer shell plates are connected externally by bolts. The outer end plate is connected to the building structure components by bolts through the connecting part.

[0016] The present invention has the following advantages: This invention relates to a torsional self-resetting damper and its installation method, used for the toughness design of building structures. It addresses the problem that while torsional dampers have good energy dissipation capabilities, they are less sensitive to displacement in building structures, unable to withstand large deformations, and thus cannot fully utilize material properties. By using an external plate and gears in conjunction, horizontal displacement is converted into torsional deformation of the rod, amplifying the torsional angle. With a small displacement of the external plate, the torsional energy-dissipating rod exhibits a large torsional angle, and the energy-dissipating rod can be easily replaced. Simultaneously, a self-resetting device is introduced through relative sliding between curved surfaces, achieving the damper's self-resetting performance after torsion, reducing residual deformation. An appropriate distance between the two connecting plates allows the damper to withstand both tension and compression forces. This invention not only improves the material utilization rate of traditional torsional dampers, but the self-resetting capability of this device effectively reduces earthquake damage to buildings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the torsional self-resetting damper; Figure 2 This is a schematic diagram of the internal assembly of the torsional self-resetting damper; Figure 3 This is a schematic diagram of the overall torsional energy dissipation device; Figure 4 This is a front view diagram of the external board; Figure 5 This is a top view of the external panel; Figure 6 This is a front view diagram of the splint; Figure 7 This is a top view of the plywood; Figure 8 This is a schematic diagram of a self-resetting device; Figure 9 This is a schematic diagram of the outer casing; In the diagram: 1. Outer plate; 2. Outer shell plate; 3. Torsion energy dissipation rod; 4. Torsion fixing plate; 5. Drive gear; 6. Fixed gear; 7. Clamping plate; 8. High-strength bolt; 9. Disc spring; 10. Fixing plate; 11. Connecting part; 12. Torsion energy dissipation part; 13. Self-resetting part; 71. Curved surface; 121. Rack; 131. Reset curved surface. Detailed Implementation

[0018] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote 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 intended to explain this application, and should not be construed as limiting this application.

[0019] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0020] As described in the background section, traditional dampers often undergo plastic deformation during earthquakes, resulting in residual displacement after the earthquake, affecting the normal use of buildings, and incurring high repair costs and long repair cycles. Therefore, self-resetting structural systems with post-earthquake self-healing capabilities have been extensively studied. Their core objective is to dissipate seismic energy while minimizing structural damage and residual deformation, achieving rapid post-earthquake recovery and usability. However, existing technologies for torsional energy dissipation devices that combine low deformation sensitivity with efficient self-resetting capabilities are still relatively lacking.

[0021] Therefore, there is an urgent need to develop a new type of torsional self-resetting damper. This device should be able to start up and dissipate energy in a timely manner under small and medium displacements, have a good response to small deformations, and have significant self-resetting capabilities, so as to further reduce post-earthquake repair costs and enhance building sustainability while reducing structural vibration and improving user comfort.

[0022] For the reasons mentioned above, this embodiment provides a torsional self-resetting damper, such as... Figures 1-9 As shown, the device includes a housing, with external plates 1 installed at both ends of the housing. The two external plates are installed back-to-back and maintain a distance between them. The external plates are provided with a connecting part 11, a torsion energy dissipation part 12, and a self-resetting part 13 in sequence along the length direction. The connecting part has several mounting holes and is connected to the building structure components by bolts. The torsion energy dissipation part 12 has racks 121 on the top and bottom, and the self-resetting part 13 has reset curved surfaces 131 on the top and bottom. A torsional energy dissipation device matching the torsional energy dissipation part and a self-resetting device matching the reset surface are installed inside the housing. The housing includes two outer shell plates 2 that are fixedly connected by bolts, and a fixing plate 10 is fixedly installed inside the outer shell plates; The torsional energy dissipation device includes a torsional energy dissipation rod 3, a torsional fixing plate 4, a driving gear 5, and a fixed gear 6. Both ends of the torsional energy dissipation rod are fixedly mounted to the torsional fixing plate 4 via the fixed gear 6. The fixed gear 6 is drive-connected to the ends of the torsional energy dissipation rod (e.g., mounted via a key). The fixed gear 6 is mounted to the torsional fixing plate 4 via gear meshing. The torsional fixing plate 4 is fixedly connected to a fixing plate 10. The driving gear 5 is mounted on the torsional energy dissipation rod and meshes with the rack. The torsional energy dissipation device converts the movement of the outer connecting plate along its length direction into the torsional rotation of the torsional energy dissipation rod through the meshing of the rack and the driving gear. The torsional energy dissipation bar 3 can be connected to the driving gear 5 and the fixed gear 6 in a detachable manner (such as by key installation) for easy replacement. At the same time, the number of torsional energy dissipation devices can be adjusted according to design requirements.

[0023] When the torsional self-resetting damper is working, the driving gear 6 meshes with the rack of the outer plate 1 to rotate, driving the torsional energy dissipation rod 3 to dissipate energy. The size of the driving gear 6 and the size and number of teeth on the gear can be selected according to requirements, thereby amplifying the displacement of the torsional energy dissipation rod 3 and amplifying its torsional angle to fully utilize its energy dissipation effect; enabling the torsional energy dissipation rod to perform large-angle torsional energy dissipation under small structural displacement. The torsional energy dissipation rod is the energy dissipation component of the damper. In this embodiment, a low-yield-point steel rod is used, which is a mature existing technology. Therefore, the energy dissipation structure of the torsional energy dissipation rod will not be described in detail here.

[0024] The self-resetting device includes clamping plates 7, high-strength bolts 8, and disc springs 9. When the upper and lower surfaces of the reset part have reset curved surfaces, the self-resetting device has two clamping plates connected by high-strength bolts 8, and the disc springs 9 are sleeved on the high-strength bolts 8 to apply preload. When the reset part has reset curved surfaces only on the upper or lower surface, the self-resetting device has one clamping plate, which is installed on the housing by high-strength bolts 8, and the disc springs 9 are sleeved on the high-strength bolts 8 to apply preload. Preferably, the upper and lower surfaces of the reset part have reset curved surfaces.

[0025] The clamping plate 7 has a curved surface 71 that fits against the reset curved surface 131. The self-resetting device provides the reset force after the outer connecting plate moves along its length by pressing the curved surface of the pressure plate against the self-resetting curved surface. When the torsional self-resetting damper is working, the curved surface of the pressure plate slides relative to the self-resetting curved surface, and the pressure of the pressure plate resets it. The high-strength bolt 8 and the disc spring 9 provide the force required for the self-resetting of the clamping plate 7. When the curved surface of the clamping plate 7 and the self-resetting curved surface slide relative to each other, lubrication can be performed between the two curved surfaces, or special materials can be used to increase friction to form a friction damper (when increasing friction, lubrication is not performed; lubrication and increasing friction are two independent solutions and are not performed simultaneously). The high-strength bolt 8 and the disc spring 9 provide the force required for the curved surface to return, thus realizing the self-resetting function.

[0026] The aforementioned technical features utilize an external plate and gears to convert horizontal displacement into torsional deformation of the rod, amplifying the torsional angle. With a small displacement of the external plate, the torsional energy-dissipating rod exhibits a large torsional angle, and the energy-dissipating rod can be easily replaced. Simultaneously, a self-resetting device is introduced through relative sliding between curved surfaces, achieving self-resetting performance of the damper after torsion, reducing residual deformation. Two connecting plates are provided, with an appropriate distance between them, allowing the damper to withstand both tension and compression forces. This torsional self-resetting damper can be applied to the support or connection parts of building structures, not only improving the material utilization rate of traditional torsional dampers but also effectively reducing earthquake damage to buildings due to its self-resetting capability.

[0027] In another embodiment, a method for installing a torsional self-resetting damper is also provided, comprising the following steps: The two clamping plates 7 are matched with the reset curved surface of the outer plate 1, connected by high-strength bolts 8, and a disc spring 9 is used to apply an appropriate preload to form a self-resetting device. The two ends of the torsion energy dissipation rod 3 are connected to the driving gear 5 and the fixed gear 6 respectively. The fixed gear 6 is meshed with the torsion fixing plate 4 to form a torsion energy dissipation device. The fixing plate 10 inside the outer shell 2 is welded to the torsion fixing plate 4 of the torsion energy dissipation device, and the number of torsion energy dissipation devices is increased as needed. The self-resetting device is clamped by the snap-fit ​​outer shell plate 2, and the two snap-fit ​​outer shell plates 2 are connected externally by bolts; The outer end plate 1 is connected to the building structure components by bolts through the connecting part.

[0028] This method enables the connection of building structural components, improves the material utilization rate of traditional torsional dampers, and has self-resetting capability, which can effectively reduce earthquake damage to buildings.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A torsional self-resetting damper, comprising a housing, characterized in that, The shell is equipped with an outer plate 1, which has a connecting part, a torsion energy dissipation part and a self-resetting part arranged sequentially along its length. The connecting part is connected to the building structure component. The torsion energy dissipation part has a rack on its upper or / and lower surface, and the self-resetting part has a reset surface on its upper or / and lower surface. A torsional energy dissipation device matching the torsional energy dissipation part and a self-resetting device matching the reset surface are installed inside the housing. The torsional energy dissipation device includes a torsional energy dissipation rod and a drive gear. The two ends of the torsional energy dissipation rod are connected to the housing. The drive gear is installed on the torsional energy dissipation rod and meshes with the rack. The torsional energy dissipation device converts the movement of the outer connecting plate along the length direction into the torsion of the torsional energy dissipation rod through the meshing of the rack and the drive gear. The self-resetting device includes a clamping plate that presses against the reset curved surface. The clamping plate has a curved surface that fits against the reset curved surface. The self-resetting device provides reset power to the outer connecting plate after it moves along the length direction by pressing the curved surface of the clamping plate against the self-resetting curved surface.

2. The torsional self-resetting damper according to claim 1, characterized in that, The torsional energy dissipation device also includes a torsional fixing plate fixedly connected to the housing, and both ends of the torsional energy dissipation rod are fixedly installed on the torsional fixing plate.

3. The torsional self-resetting damper according to claim 2, characterized in that, The two ends of the torsional energy dissipation bar are mounted on the torsional fixing plate via fixed gears. The fixed gears are connected to the ends of the torsional energy dissipation bar via gear meshing.

4. The torsional self-resetting damper according to claim 3, characterized in that, The torsional energy dissipation bar is detachably connected to the driving gear and the stationary gear.

5. The torsional self-resetting damper according to claim 1, characterized in that, The curved surface of the clamping plate and the reset curved surface are lubricated. Alternatively, a friction material can be added between the curved surface and the reset surface.

6. The torsional self-resetting damper according to claim 1, characterized in that, The self-resetting device also includes high-strength bolts and disc springs. When the upper and lower surfaces of the reset part have reset curved surfaces, the self-resetting device has two clamping plates, which are connected by high-strength bolts. The disc spring is sleeved on the high-strength bolts to apply preload. When the reset part has a reset surface only on the top or bottom, the self-resetting device has a clamp plate that is installed on the housing by a high-strength bolt, and the disc spring is sleeved on the high-strength bolt to apply a preload.

7. The torsional self-resetting damper according to claim 1, characterized in that, Both ends of the housing are equipped with external plates 1, and the two external plates are installed back to back with a gap between them.

8. The torsional self-resetting damper according to claim 1, characterized in that, The housing includes two outer shell plates 2 that are fixedly connected by bolts, and a fixing plate for fixing the torsion fixing plate is installed inside the outer shell plates.

9. A method for installing a torsional self-resetting damper as described in any one of claims 1-8, characterized in that, Includes the following steps: The two clamping plates are matched with the reset curved surfaces of the outer plate, connected by high-strength bolts, and a disc spring is used to apply an appropriate preload to form a self-resetting device. The two ends of the torsion energy dissipation bar are connected to the driving gear and the fixed gear, respectively. The fixed gear is meshed with the torsion fixed plate to form a torsion energy dissipation device. Weld the fixing plate inside the outer shell to the torsion fixing plate of the torsion energy dissipation device, and increase the number of torsion energy dissipation devices as needed; The self-resetting device is clamped by a snap-fit ​​outer shell plate, and the two snap-fit ​​outer shell plates are connected externally by bolts. The end plates are connected to the building structure components by bolts using the connecting parts.

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