Reset damper
By designing the reset damper, using bidirectional control, multi-stage shock absorption route and self-reset function, the problems of uneven load bearing and insufficient self-resetting capabilities of traditional dampers under complex loads are solved, and the earthquake resistance and adaptability are significantly improved.
Patent Information
- Application Number
- CN202411585638.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-01-07
AI Technical Summary
Traditional dampers have uneven load-bearing capacity and energy absorption capacity under complex earthquake loads, resulting in easy structure damage and inability to reset itself. The contradiction between stiffness and deformation leads to low shock absorption efficiency.
A reset damper is designed, adopting support sleeve, transmission sleeve, spring, slide rail, limit ring, magnet assembly and other structures to realize bidirectional control, multi-stage shock absorption route, extreme displacement and self-reset functions, and can be used as a function of Adjust the stiffness to provide a balanced damping effect under different load conditions and quickly recover.
The device provides balanced damping effect under loads in different directions, reduces the risk of structural damage, improves seismic performance and adaptability, has self-reset function, extends service life and reduces maintenance frequency.
Smart Images
Figure CN119267501A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of engineering structure vibration reduction and isolation, and in particular to a reset damper. Background Art
[0002] Traditional dampers are usually designed to work only in the tensile or compressive direction, or their tensile and compressive capacity is unevenly distributed. This single performance characteristic may result in the inability to balance the bearing capacity and energy absorption capacity of the damper under complex seismic loads, making the structural system prone to damage under seismic excitation. This uneven performance distribution limits the effectiveness of the damper in different load directions, which in turn affects the overall seismic performance of the structure. The shock absorption mechanism of traditional dampers generally adopts a single shock absorption route, which often leads to low shock absorption efficiency. Under reasonable structural deformation, traditional dampers cannot effectively meet the requirements of self-reset. This is because a single shock absorption route cannot adjust the damping characteristics according to the actual deformation, cannot fully exert its shock absorption efficiency under earthquake action, and is difficult to quickly recover to the original state. The bigger problem is that traditional dampers usually control the displacement of the structure by setting a single stiffness path, or limit deformation by increasing stiffness. This method often leads to a contradiction between stiffness and deformation, causing the structural response to be amplified, thereby causing greater vibration and more serious damage. This control method often fails to effectively balance the deformation and stiffness requirements of the structure, resulting in an unsatisfactory overall shock absorption effect. Therefore, it is urgent to develop a shock absorption device that solves the above problems. Summary of the invention
[0003] The purpose of the present invention is to solve the defects in the prior art and to propose a reset damper.
[0004] In order to achieve the above object, the present invention adopts the following technical solutions:
[0005] A reset damper comprises a support sleeve, a transmission sleeve is arranged above the support sleeve in parallel, a first spring is arranged between the transmission sleeve and the support sleeve; a through hole is opened on the transmission sleeve, a support column is rotatably connected in the through hole, the support column passes through the transmission sleeve and extends into the support sleeve, and is connected to the bottom of the support sleeve through a second spring;
[0006] An upper slide rail and a lower slide rail distributed vertically are arranged below the support sleeve, the support sleeve is slidably connected to the upper slide rail, the upper slide rail is slidably connected to the lower slide rail, two groups of third springs are embedded in the upper slide rail, the third springs are pressed between the inner wall of the upper slide rail and the support sleeve, and two groups of fourth springs are embedded in the lower slide rail, the fourth springs are pressed between the inner wall of the upper slide rail and the lower slide rail.
[0007] Furthermore, two groups of first limiting rings are arranged on the transmission sleeve, and two groups of second limiting rings are arranged on the support column. The two groups of first limiting rings are located between the two groups of second limiting rings and are against the second limiting rings.
[0008] Furthermore, the support sleeve is fixedly connected with multiple sets of limit rods, the outer wall of the transmission sleeve is provided with multiple sets of surface slide rails corresponding to the limit rods, the surface slide rails are multi-section structures connected end to end, the limit rod is provided with a horizontal extension section, the horizontal extension section extends into the surface slide rail, and is slidably connected to the surface slide rail.
[0009] Furthermore, the surface slide rail has a hexagonal structure.
[0010] Furthermore, the outer wall of the support sleeve is fixedly connected to multiple groups of magnet assemblies, and the magnet assembly includes two fixed magnets and a sliding magnet. The first fixed magnet is fixedly connected to the outer wall of the support sleeve, and the second fixed magnet is connected to the first fixed magnet through a sliding rod. The sliding rod is horizontally slidably connected to the sliding magnet, and the top of the sliding magnet is hinged to the first end of the transmission rod, and the second end of the transmission rod is hinged to the transmission sleeve.
[0011] Furthermore, there are at least two upper slide rails, which are arranged in parallel, and the upper slide rails include an upper sliding part and a lower sliding part, and a gap is provided between the upper sliding part and the lower sliding part, and a third spring is provided in the gap, and the upper sliding part passes through the sliding hole on the support sleeve and is slidably connected with the support sleeve;
[0012] There are at least two lower slide rails, which are arranged in parallel. The lower slide rails include an upper fixed part and a lower fixed part. The upper fixed part and the lower fixed part are spaced apart, and a fourth spring is arranged in the space. The upper sliding part penetrates the sliding of the lower sliding part and is slidably connected to the lower sliding part.
[0013] Beneficial Effects
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] First, the device has bidirectional control capability, that is, it can work effectively in both the tensile and compressive directions. This design enables the device to provide a balanced damping effect when the structure is subjected to loads in different directions, thus avoiding the limitation that traditional dampers can only work in a single direction. The dual control feature enhances the adaptability of the device under complex load conditions and improves the seismic performance of the overall structure.
[0016] Secondly, the device adopts a multi-level distributed shock absorption route, which can disperse the seismic load through multiple shock absorption paths and reduce local stress concentration. It not only improves the shock absorption effect, but also optimizes the energy absorption performance of the device under different working conditions. The multi-level distributed shock absorption route effectively improves the response of the structural system under complex seismic excitation and reduces the potential risk of structural damage.
[0017] Then, the limit displacement is taken into account in the design of the device. After reaching the predetermined displacement range, the device can effectively prevent further deformation and prevent structural damage caused by excessive deformation. The setting of the limit design displacement ensures the safety and reliability of the device under extreme load conditions, while providing stable shock absorption performance. Next, the device also has adjustable stiffness characteristics, which can dynamically adjust its stiffness according to actual load conditions and structural deformation requirements. This variable stiffness design enables the device to provide the best shock absorption effect under different working conditions, while avoiding the contradiction between stiffness and deformation. The dynamic adjustment of stiffness helps to optimize the overall response of the structure and enhances the adaptability and flexibility of the device.
[0018] Finally, the device has a self-reset function, that is, it can automatically return to its original state after an earthquake or other dynamic loads. This self-reset feature not only increases the service life of the device, but also reduces the frequency of maintenance and repair. The self-reset function enables the device to quickly return to normal working conditions after deformation and energy consumption, thereby ensuring the long-term stability and reliability of the structural system. This device has significantly improved its shock absorption performance and adaptability under complex load conditions through multiple design advantages such as dual tension and compression control, multi-level distribution of shock absorption routes, ultimate design displacement, variable stiffness, and self-reset function. These features make it an ideal shock absorption device in modern seismic design. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.
[0020] Figure 1 Schematic diagram of the overall structure of the reset damper.
[0021] Figure 2 It is a structural schematic diagram of the bottom of the transmission sleeve.
[0022] Figure 3 It is a schematic diagram of the structure of the longitudinal and transverse decoupling slide rails.
[0023] Figure 4 It is a schematic diagram of the structure of the supporting column.
[0024] Figure 5 It is a schematic diagram of the structure of the reset alloy spring.
[0025] Figure 6 It is a structural schematic diagram of the surface slide rail.
[0026] Figure 7 Schematic diagram of the structure of the magnet assembly.
[0027] In the figure: supporting column-1, limit block-2, transmission sleeve-3, surface slide rail-4, reset alloy spring-5, limit rod-6, transmission rod-7, support sleeve-8, sliding magnet-9, fixed magnet-10, vertical and horizontal decoupling slide rail-11. DETAILED DESCRIPTION
[0028] 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 only part of the embodiments of the present invention, rather than all the embodiments.
[0029] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0030] Embodiment 1:
[0031] Reference Figure 1-Figure 4 A reset damper includes an upper adaptive self-reset limit module and a longitudinal and transverse decoupling slide rail. The upper adaptive self-reset limit module mainly includes a transmission sleeve 3, a reset alloy spring 5, a support sleeve 8 and a support column 1. The upper part of the support column 1 is connected to the transmission sleeve 3 through two circles of limit blocks embedded in each, allowing relative rotation and only limiting the up and down displacement;
[0032] The support sleeve 8 is hollow inside, the lower part of the support column 1 extends into the support sleeve 8, the bottom surface of the support column 1 is connected to the inner bottom surface of the support sleeve 8 by a reset alloy spring, and the reset alloy spring 5 is fixed between the transmission sleeve 3 and the support sleeve 8. The two grooves on the lower bottom surface of the support sleeve 8 are connected to the longitudinal and transverse decoupling slide rails 11.
[0033] The support column and the transmission sleeve are connected by a limit block 2, and the limit blocks 2 of the two are only overlapped. The support column and the support sleeve are only connected by a reset alloy spring without too much constraint to meet the rotation requirements of the support column. Specifically, two sets of first limit rings are set on the transmission sleeve, and two sets of second limit rings are set on the support column. The two sets of first limit rings are located between the two sets of second limit rings and are against the second limit rings;
[0034] The longitudinal and transverse decoupling slide rail 11 includes a steel plate with special slide rails and a reset alloy spring divided into two layers. The upper slide rail is connected to the support sleeve, and the lower slide rail is connected to the upper slide rail. The upper slide rail can move along the slide rail, and the reset alloy spring buffer and limit are fixed at both ends of the upper and lower slide rails. The support sleeve is connected to the upper slide rail using a mortise and tenon structure. When the upper and lower slide rails are connected, the slide rail uses a T-shaped track with two hollowed-out wings, which complements the upper support sleeve to form a T shape.
[0035] Under the action of earthquake, the multi-directional displacement of the structure is borne by the upper adaptive self-resetting limit module and the longitudinal and transverse decoupling slide rails respectively. The adaptive self-resetting limit module bears the horizontal rotation of the structure and the vertical displacement of the structure, and the lower longitudinal and transverse slide rails bear the horizontal displacement of the structure. The vertical rotation of the structure is borne by the device as a whole. This decomposition mode can ensure that the device can adapt to a variety of bridge environments. When the structure rotates horizontally, the support column connected to the main beam is overlapped with the transmission sleeve, and the support column can rotate horizontally without affecting other structures. When the structure displaces horizontally, the device will move with the structure within a certain limit by the longitudinal and transverse decoupling slide rails. When the displacement exceeds the allowable range, the reset alloy springs at both ends of the slide rails will be compressed to resist further increase in displacement, limit its excessive displacement, and protect the bearing.
[0036] Embodiment 2:
[0037] Reference Figure 1-Figure 7 The self-adaptive self-resetting replaceable support anti-slip device is composed of an upper self-adaptive self-resetting limit module and a longitudinal and transverse decoupling slide rail. The upper self-adaptive self-resetting limit module mainly includes a support column 1, a transmission sleeve 3, a reset alloy spring 5, a limit rod 6, a transmission rod 7, a support sleeve 8, a sliding magnet 9, and a fixed magnet 10. The support sleeve 8 is hollow inside, the lower part of the support column 1 extends into the support sleeve 8, the bottom surface of the support column 1 is connected to the inner bottom surface of the support sleeve 8 by a reset alloy spring, and the reset alloy spring 5 is fixed between the transmission sleeve 3 and the support sleeve 8. The outer ring surface of the support sleeve 8 is embedded with a steel arm, the root and the distal end are both fixed magnets 10, and the middle is a sliding magnet 9. The sliding magnet 9 is hinged to the transmission sleeve 3 by the transmission rod 7, and the magnetic poles of the sliding magnet and the two fixed magnets are opposite.
[0038] Specifically, multiple groups of magnet assemblies are fixedly connected to the outer wall of the support sleeve, and the magnet assembly includes two fixed magnets and a sliding magnet. The first fixed magnet is fixedly connected to the outer wall of the support sleeve, and the second fixed magnet is connected to the first fixed magnet through a sliding rod. The sliding rod is horizontally slidably connected with the sliding magnet, and the top of the sliding magnet is hinged to the first end of the transmission rod, and the second end of the transmission rod is hinged to the transmission sleeve.
[0039] Multiple sets of limit rods 6 are fixedly connected to the support sleeve, and multiple sets of surface slide rails are arranged on the outer wall of the transmission sleeve and correspond to the limit rods. The surface slide rails are multi-section structures and are connected end to end. The limit rods are provided with horizontal extension sections, which extend into the surface slide rails.
[0040] The surface slide rails 4 are evenly distributed along the surface of the transmission sleeve. The surface slide rails are designed as asymmetric polygonal rails. The upper and lower vertices of the rails are designed with protruding chamfers. Through the cyclic sliding of the limit rod, the overall tension and compression distance of the damper is always kept within the limit design range through absolute stiffness.
[0041] The surface slide rail is a movable slide rail at the connection end of the limit rod and the transmission sleeve. When the structure moves upward, the limit rod moves downward along the left side of the surface slide rail, and as the displacement increases, it passes through the chamfer of the outer track to reach the lowest point of the slide rail. At this time, the displacement limit value is reached, and the limit rod will provide limiting capacity here; when the structure moves downward, the limit rod moves upward along the right side of the surface slide rail, and as the displacement increases, it passes through the chamfer of the outer track to reach the highest point of the surface slide rail. At this time, the displacement limit value is reached, and the limit rod will provide limiting capacity here.
[0042] One end of the limit rod is fixed to the support sleeve, and the other end is located on the surface slide rail to meet the sliding requirements of the limit rod during the movement of the supporting column within the allowable range and the requirement that the limit rod is at the target position when the supporting column reaches the maximum displacement.
[0043] Under the action of an earthquake, when the structure undergoes vertical displacement, if the vertical displacement limit is not reached, the gap between the support column and the support sleeve increases, and the reset alloy spring between the support column and the transmission sleeve and the support sleeve is stretched, converting part of the earthquake energy into the deformation energy of the reset alloy spring. The reset memory alloy spring will also provide force to resist the tension of the structure. As the vertical displacement increases, the deformation energy in the spring increases, and the force provided becomes larger and larger. When the vertical displacement reaches the limit, the energy consumption of the reset memory alloy and the force resisting the displacement reach the maximum. After the earthquake, the reset memory spring will provide a certain restoring force for the structure due to the material properties of its own material that will remember the initial state and restore the initial state after the external force is less, and the structural characteristics of the spring itself that releases its own deformation energy.
[0044] During the process of vertical displacement of the structure under the action of an earthquake, the displacement is transmitted to the sliding magnet by the transmission rod, and the distance between the sliding magnet and the fixed magnet changes. The repulsive force between the magnets increases as the distance between the sliding magnet and the fixed magnet decreases, and is converted into a force to resist the tension of the structure through the transmission rod. The magnets and the transmission rod ring transmission sleeve are evenly arranged to resist the displacement of the structure; when the vertical displacement limit is reached, the repulsive force of the magnet reaches the maximum or minimum. After the earthquake ends, the equilibrium state of the structure is destroyed, and the repulsive force of the magnet is transmitted from the transmission rod to the transmission sleeve and the supporting column, providing power for the post-earthquake self-recovery of the structure.
[0045] During the vertical displacement of the structure under the action of an earthquake, one end of the limit rod is connected to the support sleeve, and the other end is located in the slide rail of the transmission sleeve. When the structure moves upward, the limit rod moves downward along the left side of the slide rail, passes through the chamfer of the outer slide rail, and stops at the lower vertex of the outer slide rail, reaching the displacement limit of the device, and then uses the tensile strength of the limit rod itself to resist the earthquake force, and stores the remaining energy consumed by the reset alloy spring and magnet in itself; when the structure moves downward, the limit rod moves upward along the right end of the slide rail, passes through the chamfer of the outer slide rail, and stops at the upper vertex of the outer slide rail, reaching the displacement limit, and then uses the compressive strength of the limit rod itself to resist the earthquake force, and stores the remaining energy consumed by the reset alloy spring and magnet in itself. After the earthquake, the limit rod is in the elastic stage, and the stored energy is released to provide the structure with self-recovery.
[0046] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A reset damper, characterized in that: It comprises a supporting sleeve, a transmission sleeve is arranged above the supporting sleeve in parallel, a first spring is arranged between the transmission sleeve and the supporting sleeve; a through hole is opened on the transmission sleeve, a supporting column is rotatably connected in the through hole, the supporting column passes through the transmission sleeve and extends into the supporting sleeve, and is connected to the bottom of the supporting sleeve through a second spring; An upper slide rail and a lower slide rail distributed vertically are arranged below the support sleeve, the support sleeve is slidably connected to the upper slide rail, the upper slide rail is slidably connected to the lower slide rail, two groups of third springs are embedded in the upper slide rail, the third springs are pressed between the inner wall of the upper slide rail and the support sleeve, and two groups of fourth springs are embedded in the lower slide rail, the fourth springs are pressed between the inner wall of the upper slide rail and the lower slide rail.
2. A reset damper according to claim 1, characterized in that: Two groups of first limiting rings are arranged on the transmission sleeve, and two groups of second limiting rings are arranged on the support column. The two groups of first limiting rings are located between the two groups of second limiting rings and are against the second limiting rings.
3. A reset damper according to claim 1, characterized in that: A plurality of limit rods are fixedly connected to the support sleeve, a plurality of surface slide rails are provided on the outer wall of the transmission sleeve and correspond to the limit rods, the surface slide rails are multi-section structures connected end to end, a horizontal extension section is provided on the limit rod, the horizontal extension section extends into the surface slide rail and is slidably connected to the surface slide rail.
4. A reset damper according to claim 3, characterized in that: The surface slide rail is in a hexagonal structure.
5. A reset damper according to claim 1, characterized in that: The outer wall of the support sleeve is fixedly connected to multiple groups of magnet assemblies, and the magnet assemblies include two fixed magnets and a sliding magnet. The first fixed magnet is fixedly connected to the outer wall of the support sleeve, and the second fixed magnet is connected to the first fixed magnet through a sliding rod. The sliding rod is horizontally slidably connected with the sliding magnet, and the top of the sliding magnet is hinged to the first end of the transmission rod, and the second end of the transmission rod is hinged to the transmission sleeve.
6. A reset damper according to claim 5, characterized in that: The sliding magnet is opposed to the magnetic poles of the fixed magnet.
7. A reset damper according to claim 1, characterized in that: There are at least two upper slide rails, which are arranged in parallel. The upper slide rails include an upper sliding part and a lower sliding part. A gap is provided between the upper sliding part and the lower sliding part. A third spring is provided in the gap. The upper sliding part passes through the sliding hole on the support sleeve and is slidably connected with the support sleeve. There are at least two lower slide rails, which are arranged in parallel. The lower slide rails include an upper fixed part and a lower fixed part. The upper fixed part and the lower fixed part are spaced apart, and a fourth spring is arranged in the space. The upper sliding part penetrates the sliding of the lower sliding part and is slidably connected to the lower sliding part.