CN217399969U

CN217399969U - Large-displacement movable support arranged at bottom of tuned mass damper

Info

Publication number: CN217399969U
Application number: CN202221337113.7U
Authority: CN
Inventors: 祁皑; 刘俊荣; 黄周泉; 黄敬银
Original assignee: Fujian Chuangyun Construction Co ltd; Fujian Jiuheng Construction Co ltd; Fuzhou University
Current assignee: Fujian Chuangyun Construction Co ltd; Fujian Jiuheng Construction Co ltd; Fuzhou University
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-09
Anticipated expiration: 2032-05-31

Abstract

The utility model relates to an engineering structure damping technical field especially relates to an install big displacement movable support in harmonious mass damper bottom, including the lower flange board, lower flange board top middle part is equipped with the upper flange board, and hemispherical recess has been seted up to lower flange board top surface, and hemispherical recess and upper flange board underrun ball contact set up, and hemispherical recess diameter size is greater than ball diameter size, and lower flange board top lateral wall rigid coupling has a plurality of elastic damping coupling assembling, and elastic damping coupling assembling limit portion links to each other with the upper flange board lateral wall, and a plurality of elastic damping coupling assembling set up along the equidistant of upper flange board lateral wall. The utility model discloses can make harmonious mass damper upper portion additional structure have the purpose of great home range.

Description

Large-displacement movable support arranged at bottom of tuned mass damper

Technical Field

The utility model relates to an engineering structure damping technical field especially relates to an install big displacement movable support in harmonious mass damper bottom.

Background

Tuned Mass Dampers (TMDs) are an effective structural vibration control device, hereinafter referred to as TMDs. When the TMD subsystem is additionally arranged in the main structure, the natural vibration frequency of the TMD is adjusted to be close to the natural vibration frequency of the main structure, when the main structure is acted by external power, the mass block in the TMD can apply an inertia force in the opposite direction to the main structure to restrain the vibration of the main structure, and energy is dissipated through the damping device in the TMD.

The existing installation modes of the TMD are mainly a suspension type and a support type, the suspension type is to suspend a mass block on a main structure, a spring and a damper system are arranged between the suspended mass block and the main structure, and in order to ensure the movement stroke of the TMD in the horizontal direction, a suspended rope needs to have a certain length and occupies a larger vertical space.

The supporting mode is that the mass block is supported on the main structure through the movable support, but when the excellent period of external excitation is close to the natural vibration period of the main structure, the main structure is easy to resonate, the dynamic response of the main structure is obviously increased, the stroke of TMD is also obviously increased, and the displacement limit value of the common support is possibly exceeded. Limiting the stroke size of the TMD affects the effectiveness of the TMD in controlling structural vibration. Therefore, a large displacement movable support installed at the bottom of the tuned mass damper is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an install big displacement movable support in harmonious mass damper bottom to solve above-mentioned problem, reach the purpose that makes harmonious mass damper upper portion additional structure have great home range.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides an install big displacement movable support in harmonious mass damper bottom which characterized in that: including the lower flange board, lower flange board top middle part is equipped with the upper flange board, half spherical groove has been seted up to lower flange board top surface, half spherical groove with the upper flange board bottom surface sets up through the ball contact, half spherical groove diameter size is greater than ball diameter size, lower flange board top lateral wall rigid coupling has a plurality of elastic damping coupling assembling, elastic damping coupling assembling limit portion with the upper flange board lateral wall links to each other, and is a plurality of elastic damping coupling assembling follows the equidistant setting of upper flange board lateral wall.

Preferably, the bottom surface of the upper flange plate is fixedly connected with a spherical cap lining plate, the spherical cap lining plate is of an arc-shaped structure, and the lower part of the spherical cap lining plate is in rolling connection with the ball.

Preferably, the ball is in rolling connection with the hemispherical groove.

Preferably, the elastic damping connecting assembly comprises an upright column, the bottom of the upright column is fixedly connected with the lower flange plate, the central axis of the upright column is perpendicular to the bottom surface of the lower flange plate, the side wall of the upright column is slidably connected with a sliding block, and one side of the sliding block, which is far away from the upright column, is connected with the upper flange plate through a vibration absorbing part.

Preferably, the vibration absorbing part comprises a viscous damper and a spring, two ends of the viscous damper are respectively hinged with the sliding block and the upper flange plate, and two ends of the spring are respectively fixedly connected with the sliding block and the upper flange plate.

Preferably, the bottom of the lower flange plate is fixedly connected with the main structure through foundation bolts.

Preferably, the top of the upper flange plate is fixedly connected with the mass block through foundation bolts.

The utility model discloses has following technological effect: with quality piece and last flange board fixed connection, through ball and last flange board and hemispherical recess roll connection, because hemispherical recess's radius is far greater than the radius of ball, make the last flange board have great home range in hemispherical recess, thereby realize that the quality piece and the major structure on upper flange board upper portion can take place great relative motion, reach the purpose that makes harmonious mass damper upper portion auxiliary structure have great home range, and hemispherical recess makes the quality piece take place the back at the vibration, return to the recess center under the action of gravity, even the quality piece has from the reset function.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic view of the present invention;

fig. 2 is a top view of the present invention;

wherein, 1, an upper flange plate; 2. a lower flange plate; 3. a ball bearing; 4. a viscous damper; 5. a spring; 6. a slider; 7. a spherical cap liner plate; 8. a column; 9. a hemispherical recess.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1-2, this embodiment provides an install big displacement movable support in harmonious mass damper bottom, including

lower flange board

2, 2 top middle parts of lower flange board are equipped with flange board 1, hemispherical groove 9 has been seted up to 2 top surfaces of lower flange board, hemispherical groove 9 with 1 underrun ball 3 contact settings of upper flange board, hemispherical groove 9 diameter size is far greater than 3 diameter sizes of ball, 2 top lateral wall rigid couplings of lower flange board have a plurality of elastic damping coupling assembling, elastic damping coupling assembling limit portion with 1 lateral wall of upper flange board links to each other, and is a plurality of elastic damping coupling assembling follows 1 lateral wall of upper flange board is equidistant to be set up. The mass block is fixedly connected with the upper flange plate 1, and can slide relative to the hemispherical groove 9 through the rolling connection of the balls 3 with the upper flange plate 1 and the hemispherical groove 9.

According to the further optimized scheme, the spherical crown lining plate 7 is fixedly connected to the bottom surface of the upper flange plate 1, the spherical crown lining plate 7 is of an arc-shaped structure, and the lower portion of the spherical crown lining plate 7 is in rolling connection with the balls 3. The ball 3 is tightly embedded with the upper flange plate 1, and the ball 3 is not easy to be separated from the upper flange plate 1 when rolling.

In a further optimized scheme, the ball 3 is in rolling connection with the hemispherical groove 9. Allowing the mass to slide relative to the hemispherical recess 9.

Further optimization scheme, elastic damping coupling assembling includes

stand

8, 8 bottoms of stand and 2 rigid couplings of lower flange boards, and 8 axis of stand are perpendicular with 2 bottom surfaces of lower flange boards, and 8 lateral walls sliding connection of stand have slider 6, and slider 6 keeps away from 8 one sides of stand and links to each other with upper flange board 1 through the portion of shaking. The sliding block 6 is of a T-shaped structure, when the ball 3 rolls in the hemispherical groove 9, the mass block has elevation change along with the upper flange plate 1 in the hemispherical groove 9, so that the sliding block 6 can slide along the axial direction of the upright post 8, and the sliding block 6 is prevented from being separated from the upright post 8.

According to the further optimized scheme, the vibration absorption part comprises a viscous damper 4 and a spring 5, two ends of the viscous damper 4 are hinged with the sliding block 6 and the upper flange plate 1 respectively, and two ends of the spring 5 are fixedly connected with the sliding block 6 and the upper flange plate 1 respectively. The spring 5 is a spiral spring made of shape memory alloy, and has good super elasticity performance and durability, when earthquake acts, the lower flange plate 2 fixedly connected with the main structure of the building and the upright post 8 fixed on the lower flange plate 2 move along with the top of the main structure of the building to generate large displacement, while the mass block positioned at the top of the main structure of the building keeps static due to inertia effect, the upper flange plate 1 is fixedly connected with the mass block, the upper flange plate 1 is connected with the lower flange plate 2 through the rolling ball 3 and the hemispherical groove 9 in a rolling way, so that the upper flange plate 1 and the lower flange plate 2 generate relative displacement, two ends of the viscous damper 4 are respectively hinged with the sliding block 6 and the upper flange plate 1, two ends of the spring 5 are respectively fixedly connected with the sliding block 6 and the upper flange plate 1, so that the sliding block 6 can relatively slide along the axial direction of the upright post 8, the mass block moves to stretch/compress the spring 5 and the viscous damper 4, the transformation between the power potential energy and the elastic potential energy is induced, in the transformation process of the elastic potential energy and the power potential energy, the viscous damper 4 relieves the potential energy change speed, the damage of the spring 5 caused by the too fast displacement of the mass block is avoided, the potential energy total amount is continuously reduced when the viscous damper 4 is overcome to move, and finally the potential energy total amount tends to 0, and the earthquake action is further eliminated.

According to the further optimized scheme, the bottom of the lower flange plate 2 is fixedly connected with the main structure through foundation bolts. The lower flange plate 2 is tightly connected with the main building structure, and the main building structure is favorable for transmitting the earthquake action to the mass block.

Further optimize the scheme, go up flange plate 1 top and pass through rag bolt and quality piece rigid coupling. The upper flange plate 1 is tightly connected with the mass block, and the mass block and the upper flange plate 1 are prevented from falling off to cause device failure.

The working process of the embodiment is as follows:

the embodiment provides a large displacement movable support installed at the bottom of a tuned mass damper, which is installed at the top of a main structure of a building, wherein an upper flange plate 1 is fixedly connected with a mass block, when an earthquake force acts on the main structure of the building, the main structure of the building generates transverse displacement along with the earthquake force, when the building is too high, the top of the main structure of the building generates large displacement due to a whip tip effect, a lower flange plate 2 fixedly connected with the main structure of the building and a stand column 8 fixed to the lower flange plate 2 also generate large displacement along with the movement of the top of the main structure of the building, the mass block positioned at the top of the main structure of the building is kept static due to an inertia effect, the upper flange plate 1 is fixedly connected with the mass block, the upper flange plate 1 is connected with the lower flange plate 2 in a rolling manner through balls 3 and hemispherical grooves 9, so that the upper flange plate 1 and the lower flange plate 2 generate relative displacement, and a spring 5 and a viscous damper 4 are stretched/compressed, when the elastic potential energy of the spring 5 is converted into the dynamic potential energy of the mass block, the mass block and the upper flange plate 1 and the lower flange plate 2 fixedly connected with the mass block generate relative displacement, the displacement direction of the mass block is opposite to the movement direction of the lower flange plate 2 and the building main structure fixedly connected with the lower flange plate 2, the displacement of the top of the building main structure is greatly reduced, the shearing damage of the building main structure caused by overlarge displacement due to the whip tip effect at the top of the building main structure is avoided, and the damage of the building is avoided.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description of the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides an install big displacement movable support in harmonious mass damper bottom which characterized in that: including lower flange board (2), lower flange board (2) top middle part is equipped with flange board (1), hemispherical groove (9) have been seted up to lower flange board (2) top surface, hemispherical groove (9) with upper flange board (1) underrun ball (3) contact setting, hemispherical groove (9) diameter size is greater than ball (3) diameter size, lower flange board (2) top lateral wall rigid coupling has a plurality of elastic damping coupling assembling, elastic damping coupling assembling limit portion with upper flange board (1) lateral wall links to each other, and is a plurality of elastic damping coupling assembling follows upper flange board (1) lateral wall equidistant setting.

2. A large displacement cradle mounted to the bottom of a tuned mass damper as claimed in claim 1 wherein: go up flange plate (1) bottom surface rigid coupling has spherical crown welt (7), spherical crown welt (7) are the arc structure, spherical crown welt (7) below with ball (3) roll connection.

3. A large displacement cradle mounted to the bottom of a tuned mass damper as claimed in claim 1 wherein: the ball (3) is in rolling contact with the hemispherical groove (9).

4. A large displacement cradle mounted to the bottom of a tuned mass damper as claimed in claim 1 wherein: elastic damping coupling assembling includes stand (8), and is a plurality of stand (8) are followed go up flange board (1) circumference equidistant setting, stand (8) bottom with lower flange board (2) rigid coupling, stand (8) axis with lower flange board (2) bottom surface is perpendicular, the vertical sliding connection of stand (8) lateral wall has slider (6), slider (6) are kept away from stand (8) one side through inhale the portion of inhaling with go up flange board (1) and link to each other.

5. A large displacement cradle mounted to the bottom of a tuned mass damper as claimed in claim 4 wherein: the vibration absorption part comprises a viscous damper (4) and a spring (5), two ends of the viscous damper (4) are hinged to the sliding block (6) and the upper flange plate (1) respectively, and two ends of the spring (5) are fixedly connected with the sliding block (6) and the upper flange plate (1) respectively.

6. A large displacement cradle mounted to the bottom of a tuned mass damper as claimed in claim 1 wherein: the bottom of the lower flange plate (2) is fixedly connected with the main structure through foundation bolts.

7. A large displacement cradle mounted to the bottom of a tuned mass damper as claimed in claim 1 wherein: the top of the upper flange plate (1) is fixedly connected with the mass block through foundation bolts.