A pendulum damper for a suspension

Abstract

The application discloses a suspension type collision pendulum damper, which comprises a fixing device and a suspension device; the fixing device is fixed on a building, and the suspension device is suspended on the lower side of the fixing device; the suspension device comprises a spherical hinge, a shaft rod, an upper bottom plate, a lower bottom plate, a collision ball and a spring; when horizontal excitation is generated, the building structure transmits vibration to the collision pendulum damper, and the suspension device can freely swing; when the suspension device swings upward from the vertical position, the collision ball slides along the shaft rod towards the center, and the collision ball collides with the upper bottom plate to generate energy dissipation; when the suspension device swings downward from the maximum swing amplitude position to the original position, the collision ball slides along the shaft rod away from the center, and the collision ball collides with the lower bottom plate to provide damping; the spring drives the collision ball to collide with the upper and lower bottom plates for multiple times in a swing cycle, so that vibration reduction is realized. The damper can adapt to excitation in different directions, different frequency bands and different intensities, the flexibility of the damper is improved, and the energy dissipation efficiency of the collision ball is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of civil engineering structure damping technology, and particularly relates to a suspension type collision pendulum damper. BACKGROUND

[0002] With the continuous development of social economy and the needs of people's living, office and transportation, more and more high-rise buildings and infrastructure have been built in recent decades, and the research on the vibration resistance of these structures has gradually developed. The vibration caused by earthquakes and wind loads has a non-negligible destructive power on building structures. Light causes component damage and reduces service life, and heavy causes building collapse. Effectively improving the vibration resistance of buildings is an important challenge in the field of building.

[0003] However, the damper in the prior art cannot provide a corresponding swing plane according to the change of the excitation direction, and the existing damper has a narrow vibration damping frequency band, and can only produce good vibration damping effect on the frequency tuned by it. The control effect of the vibration region deviating from the frequency is poor, and the adaptability to different directions, different frequency bands and different intensity excitations is poor, and the damper cannot provide effective shock absorption for buildings. SUMMARY

[0004] The present application provides a suspension type collision pendulum damper to solve the above problems.

[0005] In order to achieve the above purpose, the technical scheme of the present application is:

[0006] A suspension type collision pendulum damper, comprising a fixing device and a suspension device;

[0007] The fixing device is fixed to the building, and the suspension device is vertically suspended on the lower side of the fixing device, and the suspension device can freely swing around the connection between the fixing device and the suspension device;

[0008] The suspension device comprises a spherical hinge, a shaft rod, an upper bottom plate, a lower bottom plate, a collision ball and a spring. The spherical hinge is connected to the lower side of the fixing device, the upper bottom plate is connected to the lower side of the spherical hinge through a plurality of connecting rods, the upper bottom plate is provided with an opening, the shaft rod is vertically arranged, and the upper end of the shaft rod is fixed to the lower side of the spherical hinge, and the lower end of the shaft rod penetrates through the opening of the upper bottom plate and is fixedly connected with the lower bottom plate arranged on the lower side of the upper bottom plate. The collision ball is slidably installed on the shaft rod and arranged between the upper bottom plate and the lower bottom plate. The spring is sleeved outside the shaft rod, and the upper end of the spring is fixedly connected with the bottom of the spherical hinge. The lower end of the spring penetrates through the opening of the upper bottom plate and is fixedly connected with the top of the collision ball.

[0009] When horizontal excitation occurs, the building structure transmits vibration to the collision pendulum damper, the suspension device can swing freely with the connection of the fixed device as the center, when the suspension device swings up from the vertical position, the collision ball slides along the shaft center rod, the spring is compressed, the collision ball collides with the upper bottom plate to generate energy loss; when the suspension device swings down from the maximum swing amplitude position to the original position, the collision ball slides along the shaft center rod, the spring is elongated, the collision ball collides with the lower bottom plate to generate energy loss, providing damping, the elastic effect of the spring can drive the collision ball to collide with the upper bottom plate and the lower bottom plate multiple times in the swing period, realizing the function of vibration reduction of the building structure.

[0010] Further, the fixed device comprises a fixed plate and a lifting ring fixed to the center of the lower side of the fixed plate; the ball hinge comprises a ball structure and a connecting ring fixed to the top of the ball structure, and the connecting ring and the lifting ring are nested and connected with each other.

[0011] Further, a through hole is formed in the center of the collision ball in the vertical direction, the lower end of the shaft center rod is fixedly connected with the upper surface of the lower bottom plate through the through hole, and the collision ball can slide up and down along the shaft center rod.

[0012] Further, the plurality of connecting rods are uniformly arranged and connected to the lower side of the ball structure in a diagonal manner, and the plurality of connecting rods are symmetrically arranged with the shaft center rod as the center.

[0013] The centroids of the ball structure, the connecting ring, the collision ball, the spring, the upper bottom plate, the lower bottom plate, the fixed plate and the lifting ring are all located on the straight line where the axis of the shaft center rod is located.

[0014] Further, the elastic coefficient of the spring is coordinated with the mass of the collision ball, so that under the action of horizontal excitation, the spring can drive the collision ball to collide with the upper bottom plate and the lower bottom plate repeatedly when the suspension device swings.

[0015] Further, the lower surface of the upper bottom plate and the upper surface of the lower bottom plate are both provided with high-elasticity rubber material.

[0016] Further, the diameter of the shaft center rod is smaller than the diameter of the opening and smaller than the inner diameter of the spring.

[0017] The outer diameter of the spring is smaller than the diameter of the opening.

[0018] The diameter of the collision ball is smaller than the diameter of the opening.

[0019] Further, a threaded hole is arranged on the fixed plate, and a bolt passes through the threaded hole to fix the fixed plate on the building.

[0020] Further, the connecting rod and the shaft center rod are both made of high-strength bending-resistant material.

[0021] The beneficial effects of the present application are:

[0022] The suspension type collision swing damper disclosed in the present application can swing freely around the connection with the fixing device, so that the damper can provide a swing plane corresponding to the changeable excitation direction, improve the flexibility and adaptability of the damper, and improve the wind resistance and damping performance of the building structure. Moreover, the damper utilizes the movement of the collision ball during the swing of the damper, and under the action of excitation, the centripetal and centrifugal movement of the collision ball during the swing along the shaft rod makes the collision ball collide with the upper and lower bottom plates during the movement to generate energy consumption and provide damping. Under the elastic action of the spring, the collision ball can collide with the upper and lower bottom plates multiple times within a swing period, effectively increasing the energy consumption efficiency of the collision ball, so that the damper can adapt to excitations of different directions, different frequency bands and different intensities, and can provide effective shock absorption for the building. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a structural schematic view of the suspension type collision swing damper disclosed in the first embodiment of the present application.

[0025] Figure 2 It is a front view of the suspension type collision swing damper disclosed in the first embodiment of the present application.

[0026] Figure 3 It is a front sectional view of the suspension type collision swing damper disclosed in the first embodiment of the present application.

[0027] Figure 4 It is a side view of the suspension type collision swing damper disclosed in the first embodiment of the present application.

[0028] Figure 5 It is a top view of the suspension type collision swing damper disclosed in the first embodiment of the present application.

[0029] In the figure: 1, fixing device; 11, fixed plate; 12, lifting ring; 2, suspension device; 21, spherical hinge; 211, spherical structure; 212, connecting ring; 22, shaft rod; 23, upper bottom plate; 231, opening; 24, lower bottom plate; 25, collision ball; 26, spring; 27, connecting rod. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figures 1-5 The image shows a suspended collision pendulum damper provided in this embodiment, including a fixing device 1 and a suspension device 2;

[0032] The fixing device 1 is fixed to the building, and the suspension device 2 is vertically suspended below the fixing device 1. The suspension device can swing freely about the connection point with the fixing device 1.

[0033] The suspension device 2 includes a ball joint 21, a pivot rod 22, an upper base plate 23, a lower base plate 24, a collision ball 25, and a spring 26; the ball joint 21 is connected to the lower side of the fixing device 1, and the upper base plate is connected to the lower side of the ball joint via several connecting rods 27, such as... Figure 3 As shown, the upper base plate has an opening 231. The shaft rod is vertically arranged, and its upper end is fixed to the lower side of the ball joint. Its lower end passes through the opening of the upper base plate and is fixedly connected to the lower base plate located on the lower side of the upper base plate. The collision ball is slidably mounted on the shaft rod and is located between the upper base plate and the lower base plate. The spring is sleeved on the outside of the shaft rod, and the upper end of the spring is welded and fixed to the bottom of the ball joint. The lower end of the spring passes through the opening of the upper base plate and is fixedly connected to the top of the collision ball.

[0034] When a horizontal excitation occurs, the building structure transmits vibrations to the impact pendulum damper. The suspension device can swing freely around the connection point with the fixed device. When the suspension device swings upward from the vertical position, the impact ball slides centripetally (upward) along the axis rod, the spring is compressed, and the impact ball collides with the upper base plate, generating energy loss. When the suspension device swings downward from the position of maximum swing amplitude back to the original position, the impact ball slides centrifugally (downward) along the axis rod, the spring is extended, and the impact ball collides with the lower base plate, generating energy loss and providing damping. The elasticity of the spring can drive the impact ball to collide with the upper and lower base plates multiple times within the swing cycle, realizing the vibration reduction function of the building structure.

[0035] The suspension type collision pendulum damper disclosed in the application can swing freely around the connection with the fixing device, so that the damper can provide a swing plane corresponding to the changeable excitation direction, improve the flexibility and adaptability of the damper, and improve the wind resistance and damping performance of the building structure. Moreover, the damper utilizes the movement of the collision ball during the swing of the damper, and under the action of excitation, the centripetal and centrifugal movements of the collision ball during the swing along the axial rod make the collision ball collide with the upper and lower bottom plates during the movement to generate energy consumption and provide damping. Under the elastic action of the spring, the collision ball can collide with the upper and lower bottom plates multiple times within a swing period, effectively increasing the energy consumption efficiency of the collision ball, so that the damper can adapt to excitations of different directions, different frequency bands and different intensities, and can provide effective damping for the building. The damper has the characteristics of flexible and multidirectional damping, so that the collision pendulum damper has better energy consumption and adaptability, and also has the advantages of simple structure, convenient installation, maintenance-free and low cost, solving the problems of complex structure, frequent maintenance and high cost of traditional dampers.

[0036] In specific embodiments, the fixing device 1 comprises a fixing plate 11 and a lifting ring 12 welded at the center of the lower side of the fixing plate; the ball hinge 21 comprises a ball structure 211 and a connecting ring 212 fixed to the top of the ball structure, and the connecting ring 212 and the lifting ring 12 are connected to each other in a nested manner. When horizontal excitation occurs, the building structure transmits vibration to the collision pendulum damper, and the suspension device can freely swing around the lifting ring 12 as the center. Compared with the ordinary one-way hinged suspension damper, the suspension device adopts a fixed ring nested connection, can provide a swing plane corresponding to the changeable excitation direction, and improves the flexible adaptability of the damper.

[0037] In specific embodiments, a through hole is formed in the center of the collision ball 25 in the vertical direction, and the lower end of the axial rod 22 is fixedly connected to the upper surface of the lower bottom plate 24 through the through hole. Under the action of horizontal excitation, the collision ball can slide up and down along the axial rod 22 and collide with the upper bottom plate 23 or the lower bottom plate 24 to generate energy loss and provide damping.

[0038] In specific embodiments, a plurality of connecting rods 27 are uniformly arranged and connected to the lower side of the ball structure 211 in a diagonal manner, and the plurality of connecting rods 27 are symmetrically arranged around the axial rod 22.

[0039] Centers of the ball structure 211, the connecting ring 212, the collision ball 25, the spring 26, the upper bottom plate 23, the lower bottom plate 24, the fixed plate 11 and the hanging ring 12 are located on a straight line where the axis of the shaft core rod 22 is located; so that the damper is balanced, and the collision ball can move along the shaft core rod under the action of horizontal excitation, thereby realizing the wind resistance and damping effect of the building; in the embodiment, the number of connecting rods is four, which ensures balanced force.

[0040] In specific embodiments, the spring 26 has a spring coefficient coordinated with the mass of the collision ball 25, so that the spring 26 can drive the collision ball to collide with the upper bottom plate 23 and the lower bottom plate 24 repeatedly when the suspension device swings under the action of horizontal excitation, so as to ensure energy loss and provide damping.

[0041] In specific embodiments, the lower surface of the upper bottom plate 23 and the upper surface of the lower bottom plate 24 are both provided with high-elastic rubber material, which can disperse the impact when the collision ball impacts and disperse part of the energy by material adhesion to achieve damping effect.

[0042] In specific embodiments, the diameter of the shaft core rod 22 is smaller than the diameter of the opening 231 and smaller than the inner diameter of the spring 26.

[0043] The outer diameter of the spring 26 is smaller than the diameter of the opening 231, so that the shaft core rod and the spring can pass through the opening 231.

[0044] The diameter of the collision ball 25 is smaller than the diameter of the opening 231, which can ensure that the collision ball cannot slide to the upper side of the upper bottom plate through the opening and cannot collide with the lower surface of the upper bottom plate.

[0045] In specific embodiments, the fixed plate is provided with a threaded hole, and a bolt passes through the threaded hole to fix the fixed plate on the building.

[0046] In specific embodiments, the connecting rod and the shaft core rod are both made of high-strength bending-resistant material, which is used to ensure the stability of the connection between the upper bottom plate and the ball hinge, thereby ensuring the stability of the damper structure.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A suspended collision pendulum damper, characterized in that, The device comprises a fixing device (1) and a suspension device (2); The fixing device (1) is fixed on a building, and the suspension device (2) is vertically suspended on the lower side of the fixing device (1) and can freely swing around the connection between the fixing device (1) and the suspension device (2); The suspension device (2) comprises a spherical hinge (21), a shaft rod (22), an upper bottom plate (23), a lower bottom plate (24), a collision ball (25) and a spring (26); the spherical hinge (21) is connected to the lower side of the fixing device (1); the upper bottom plate is connected to the lower side of the spherical hinge through a plurality of connecting rods (27); the upper bottom plate is provided with an opening (231); the shaft rod is vertically arranged, with the upper end fixed to the lower side of the spherical hinge and the lower end penetrating the opening of the upper bottom plate and fixedly connected to the lower bottom plate arranged on the lower side of the upper bottom plate; the collision ball is slidably arranged on the shaft rod and between the upper bottom plate and the lower bottom plate; the spring is sleeved on the outer side of the shaft rod, with the upper end fixed to the bottom of the spherical hinge and the lower end fixedly connected to the top of the collision ball penetrating the opening of the upper bottom plate. When horizontal excitation occurs, the building structure transmits vibration to the collision pendulum damper, and the suspension device can freely swing around the connection between the fixing device and the suspension device; when the suspension device swings upward from the vertical position, the collision ball slides along the shaft rod, the spring is compressed, and the collision ball collides with the upper bottom plate to generate energy loss; when the suspension device swings downward from the maximum swing amplitude position to the original position, the collision ball slides along the shaft rod, the spring is elongated, and the collision ball collides with the lower bottom plate to generate energy loss, thereby providing damping; the elastic effect of the spring can drive the collision ball to collide with the upper bottom plate and the lower bottom plate multiple times in a swing cycle, thereby achieving the function of reducing vibration of the building structure. The fixing device (1) comprises a fixing plate (11) and a lifting ring (12) fixed to the center of the lower side of the fixing plate; the spherical hinge (21) comprises a spherical structure (211) and a connecting ring (212) fixed to the top of the spherical structure; the connecting ring (212) and the lifting ring (12) are nested and connected with each other. A through hole is formed in the center of the collision ball (25) in the vertical direction, and the lower end of the shaft rod (22) is fixedly connected to the upper surface of the lower bottom plate (24) through the through hole; the collision ball can slide up and down along the shaft rod (22).

2. A pendulum damper according to claim 1, characterized in that The plurality of connecting rods (27) are uniformly arranged and connected to the lower side of the spherical structure (211) in an inclined manner, and the plurality of connecting rods (27) are symmetrically arranged around the shaft rod (22). The centers of the spherical structure (211), the connecting ring (212), the collision ball (25), the spring (26), the upper bottom plate (23), the lower bottom plate (24), the fixing plate (11) and the lifting ring (12) are all arranged on the straight line where the axis of the shaft rod (22) is located.

3. A pendulum damper according to claim 1, wherein The elastic coefficient of the spring (26) is coordinated with the mass of the collision ball (25), so that the spring (26) can drive the collision ball to repeatedly collide with the upper bottom plate (23) and the lower bottom plate (24) when the suspension device swings under the action of horizontal excitation.

4. A pendulum damper according to claim 1, wherein The upper surface of the upper bottom plate (23) and the lower surface of the lower bottom plate (24) are provided with high-elastic rubber material.

5. A pendulum damper according to claim 1, wherein The diameter of the shaft rod (22) is smaller than the diameter of the opening (231) and the inner diameter of the spring (26); The outer diameter of the spring (26) is smaller than the diameter of the opening (231); The diameter of the collision ball (25) is smaller than the diameter of the opening (231).

6. A pendulum damper for a suspension according to claim 1, wherein The fixing plate is provided with a threaded hole, and a bolt passes through the threaded hole to fix the fixing plate on the building.

7. A pendulum damper according to claim 1, wherein The connecting rod and the shaft rod are made of high-strength bending-resistant material.

Images