CN216340209U

CN216340209U - Buffering and limiting device for unidirectional pendulum type tuned mass damper

Info

Publication number: CN216340209U
Application number: CN202122619280.2U
Authority: CN
Inventors: 徐佳炜; 李向群
Original assignee: ZHIXING S&T Ltd
Current assignee: ZHIXING S&T Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-19
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a buffering and limiting device for a unidirectional swinging type tuned mass damper, which comprises a T-shaped stop block, a buffer, a supporting ground wheel assembly and a synchronous connecting rod, wherein the T-shaped stop block is arranged on the bottom surface of a mass block, the mass block is suspended on a steel beam at the top through a swinging rope, the length direction of the T-shaped stop block is consistent with the swinging direction of the mass block, the T-shaped stop block swings along with the mass block, the buffer is arranged on two sides of the T-shaped stop block along the swinging direction of the mass block, and the buffer comprises a buffer body, a buffer body fixing frame, a connecting bolt, a reset spring, a guide wheel fixing plate and a guide wheel. Once one side of the buffer fails, the buffer limiting device can still provide half damping force to limit the swing amplitude of the mass block, meanwhile, due to the linkage effect of the two buffers, a single buffer can be structurally designed according to half designed damping force, the size and the weight can be further reduced, and the cost can be reduced.

Description

Buffering and limiting device for unidirectional pendulum type tuned mass damper

Technical Field

The utility model belongs to the technical field of damping vibration attenuation, and particularly relates to a buffering and limiting device for a unidirectional pendulum type tuned mass damper.

Background

Super high-rise building receives strong wind to influence easily and produces the swing, and when wind-force was great, building structure vibration amplitude was too big, causes building structure damage easily, the security and the travelling comfort of greatly reduced structure. In order to reduce the vibration reaction of the building, a wind-resistant damper is required to be arranged, wherein a pendulum tuned mass damper is a typical wind-resistant damper.

In order to avoid the too large amplitude of oscillation of the mass block under the conditions of strong wind and great earthquake, the pendulum tuned mass damper usually needs to arrange a buffering and limiting device in the system. When the swing amplitude of the mass block exceeds a preset value, the mass block can impact the buffering and limiting device, so that the motion of the mass block is slowed down. Tuned mass dampers generally utilize a crash cylinder or a cushion block arranged in the motion direction of a mass block to play a role in buffering and limiting, but once the crash cylinder or the cushion block in the motion direction of the mass block fails, an excessively large mass block swing amplitude may damage a building structure, in addition, for large-scale unidirectional pendulum tuned mass dampers, up to hundreds of tons of mass blocks exist, kinetic energy during mass block swing is large, the volume of a single crash cylinder or cushion block is large, the swing of the mass block of the pendulum tuned mass damper actually has a small part of vertical displacement caused by swing in addition to main horizontal displacement, and the traditional cushion block is simultaneously subjected to pressure brought by impact and a part of tearing force in the vertical direction, which is unfavorable for the reliability and service life of the cushion block.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a buffering and limiting device for a unidirectional pendulum type tuned mass damper, which solves the problem that the reliability and the service life of a buffer are unfavorable.

In order to solve the technical problems, the utility model provides the following technical scheme: a buffering and limiting device for a unidirectional pendulum type tuned mass damper comprises a T-shaped stop block, a buffer, a supporting ground pin wheel assembly and a synchronous connecting rod;

the buffer comprises a buffer body, a buffer body fixing frame, a connecting bolt, a reset spring, a guide wheel fixing plate and a guide wheel, wherein the T-shaped stop block is arranged on the bottom surface of the mass block, the mass block is suspended on a steel beam at the top through a swinging rope, the length direction of the T-shaped stop block is consistent with the swinging direction of the mass block, the T-shaped stop block swings along with the mass block, the buffer is arranged on two sides of the T-shaped stop block along the swinging direction of the mass block, and the buffer comprises a buffer body, a buffer body fixing frame, a connecting bolt, a reset spring, a guide wheel fixing plate and a guide wheel; the buffer body comprises a cylinder barrel, a rear end cover, a front end cover, a guide sleeve, a guide rod and a piston;

the cylinder barrel is cylindrical, two ends of the cylinder barrel are provided with openings, a rear end cover and a front end cover are arranged on two end faces of the cylinder barrel, the rear end cover and the front end cover are in threaded fastening connection with the cylinder barrel and used for limiting and fixing a guide sleeve, the guide rod and a piston are fixedly integrated, the guide rod penetrates through the rear end cover, the front end cover and the guide sleeve on two sides in the cylinder barrel, the piston divides a cavity in the cylinder barrel into two cavities, the cavity in the cylinder barrel is filled with viscous damping media, the cylinder barrel is fixedly provided with two front and rear flange end plates, bolt holes are formed in the flange end plates, the buffer body is fixedly connected with the flange end plates and the buffer body fixing frame through connecting bolts, a guide wheel fixing plate is fixed at the head of the guide rod, and the guide wheel is fixedly connected to the guide wheel fixing plate through threads;

the reset spring is a cylindrical spiral compression spring, one end of the reset spring is sleeved on the cylinder barrel, the other end of the reset spring is sleeved on the guide wheel fixing plate, the free height of the reset spring is the distance from the flange face on the front side of the cylinder barrel to the guide wheel fixing plate, threaded holes are formed in two ends of the synchronous connecting rods, the two synchronous connecting rods are respectively connected with the buffers on two sides of the T-shaped stop block, and screw rods at the end parts of two ends of the synchronous connecting rods respectively penetrate through the guide wheel fixing plates of the buffers on the two sides and are locked and fixed by nuts.

As a preferred technical scheme of the utility model, a graphite copper sleeve matched with the rod diameter of the guide rod is arranged in the guide sleeve.

As a preferred technical scheme of the utility model, a gap is formed between the inner diameter of the cylinder barrel and the outer diameter of the piston, the gap is 0.5-2mm, lip-shaped sealing rings, PTFE combined sealing rings and dustproof sealing rings which are adaptive to the rod diameter are respectively arranged on the rear end cover and the front end cover on two sides of the cylinder barrel, and O-shaped sealing rings are respectively arranged on the contact surfaces of the rear end cover and the front end cover and the inner side of the cylinder barrel.

As a preferable technical scheme of the utility model, the outer surface of the guide wheel is provided with a polyurethane buffering and silencing pad.

In a preferred embodiment of the present invention, two supporting foot wheel assemblies are disposed below the guide wheel fixing plate in the width direction, and each supporting foot wheel assembly includes a foot wheel fixing plate and a ground foot wheel.

As a preferable technical scheme of the utility model, the buffer is horizontally arranged, and the axial direction of the buffer is vertical to the vertical baffle plate part of the T-shaped stop block.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. through the design, a group of T-shaped stop blocks are arranged at the bottom of a mass block of the unidirectional pendulum type tuned mass damper, a buffer is respectively arranged in the direction of reciprocating swing of the T-shaped stop blocks, the two buffers are connected through a synchronous connecting rod to realize simultaneous working, when a building structure encounters strong wind or a violent earthquake, the large-amplitude swing of the structure causes the swing amplitude of the mass block to exceed a set stroke, the T-shaped stop blocks collide with a polyurethane guide wheel at the head of the buffer at one side, the buffer at the side is gradually compressed, a reset spring is compressed and deformed, a piston in a cylinder barrel and a damping medium generate relative motion, the kinetic energy of the mass block is dissipated by depending on the viscous characteristic of the damping liquid, and simultaneously, due to the action of the synchronous connecting rod, the buffer at the other side in the swing direction is gradually pulled out, and the energy dissipation effect is generated by the relative motion of the piston in the inner part and the damping medium; once one side of the buffer fails, the buffer limiting device can still provide half of damping force to limit the swing amplitude of the mass block, and simultaneously, due to the linkage action of the two buffers, a single buffer can be structurally designed according to half of the designed damping force, so that the size and the weight can be further reduced, and the cost can be reduced;

2. under the design, the problem that when the buffer is horizontally arranged, under the action of self gravity load, the local deflection of the guide rod is larger, and the running smoothness of the buffer is influenced is solved, the graphite copper sleeve is additionally arranged on the guide sleeve in the cylinder barrel and is used for increasing the axial rigidity of the guide rod and reducing the friction force when the guide rod slides, and in addition, the foundation wheel fixed below the guide wheel fixing plate can also improve the overall rigidity of the buffer device; the polyurethane leading wheel that the head set up can overcome the vertical displacement of the small part that the swing caused, can play the effect of amortization when the dog strikes the buffer simultaneously.

Drawings

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

FIG. 2 is a schematic top view of the buffering and limiting device of the present invention;

FIG. 3 is a front view of the damper of the present invention;

FIG. 4 is an internal cross-sectional view of a bumper of the present invention;

fig. 5 is a perspective view of the supporting ground wheel assembly of the present invention.

Wherein: 1. a steel beam; 2. swinging a rope; 3. a mass block; 4. a T-shaped stop block; 5. a buffer; 6. supporting a foot wheel assembly; 7. a synchronous connecting rod; 501. a bumper body; 502. a buffer body fixing frame; 503. a connecting bolt; 504. a return spring; 505. a guide wheel fixing plate; 506. a guide wheel; 507. a rear end cap; 508. a guide sleeve; 509. a flange end plate; 510. a guide bar; 511. a piston; 512. a front end cover; 513. a dustproof sealing ring; 514. a lip-shaped seal ring; 515. a PTFE combined sealing ring; 516. a graphite copper sleeve; 517. viscous damping media; 518. an O-shaped sealing ring; 519. a cylinder barrel; 601. a ground pin wheel fixing plate; 602. a ground caster.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in fig. 1-5, a buffering and limiting device for a unidirectional pendulum tuned mass damper comprises a T-shaped stopper 4, a buffer 5, a supporting ground wheel assembly 6 and a synchronous connecting rod 7;

the T-shaped stop block 4 is arranged on the bottom surface of the mass block 3, the mass block 3 is suspended on the steel beam 1 at the top through the swing rope 2, the length direction of the T-shaped stop block 4 is consistent with the swing direction of the mass block 3, and the T-shaped stop block 4 swings together with the mass block 3;

in order to prevent the oscillation amplitude of the mass block 3 from being too large, the buffers 5 are arranged on two sides of the T-shaped stop block 4 along the oscillation direction of the mass block 3, and each buffer 5 comprises a buffer body 501, a buffer body fixing frame 502, a connecting bolt 503, a return spring 504, a guide wheel fixing plate 505 and a guide wheel 506; the damper body 501 includes a cylinder 519, a rear end cover 507, a front end cover 512, a guide sleeve 508, a guide rod 510, and a piston 511; the cylinder 519 is cylindrical with two open ends, a rear end cover 507 and a front end cover 512 are arranged on two end faces of the cylinder 519, the rear end cover 507 and the front end cover 512 are in threaded fastening connection with the cylinder 519 and used for limiting and fixing the guide sleeve 508, the guide rod 510 and the piston 511 are fixedly arranged integrally, the guide rod 510 penetrates through the rear end cover 507, the front end cover 512 and the guide sleeve 508 on two sides of the interior of the cylinder 519, the cavity of the interior of the cylinder 519 is divided into two chambers by the piston 511, the inner chamber is filled with viscous damping media 517, a gap exists between the inner diameter of the cylinder 519 and the outer diameter of the piston 511, the damping gap can be determined according to a damping coefficient required by the design of an expected buffer, and the general range is 0.5-2 mm; when the piston 511 and the viscous damping medium 517 move relatively, the viscous damping medium 517 flows from one chamber to the other chamber through the gap, and the buffer dissipates energy by means of the viscous property of the damping fluid and the hole shrinkage effect; in order to ensure that the viscous damping medium 517 does not leak, a lip-shaped sealing ring 514 and a PTFE combined sealing ring 515 for dynamic sealing of the piston 511 rod are installed on the inner circle of the guide sleeve 508, an O-shaped sealing ring 518 for static sealing is installed on the outer circle of the guide sleeve 508, and in order to prevent pollutants from entering a sealing system, a dustproof sealing ring 513 is additionally arranged in the guide sleeve 508; the guide sleeve 508 adopts the graphite copper sleeve 516 matched with the rod diameter of the guide rod 510 as a metal guide element of the guide rod 510, so that the phenomena of stagnation and seizure can be prevented, higher load bearing capacity is provided, and the axial rigidity of the guide rod 510 is improved;

the buffer body 501 is fixedly connected with a flange end plate 509 and a buffer body fixing frame 502 through a connecting bolt 503, the head of a guide rod 510 is fixedly provided with a guide wheel fixing plate 505, a guide wheel 506 is fixedly connected to the guide wheel fixing plate 505 through threads so as to eliminate a small part of vertical displacement generated by the swinging of the mass block 3 when the T-shaped stop block 4 is in impact contact, the wheel surface of the guide wheel 506 is coated with a layer of polyurethane, and the impact process of the T-shaped stop block 4 is further buffered and silenced; a supporting foot wheel assembly 6 fixed on the guide wheel fixing plate 505 is arranged at the lower side of the guide wheel 506, and the supporting foot wheel assembly 6 consists of two foot wheel fixing plates 601 and a supporting ground caster 602; a group of ground supporting casters 602 is fixed on the guide wheel fixing plate 505 through the ground wheel fixing plate 601;

the reset spring 504 is a cylindrical spiral compression spring, one end of the reset spring 504 is sleeved on the cylinder 519, the other end of the reset spring 504 is sleeved on the guide wheel fixing plate 505, the free height of the reset spring 504 is the distance from the flange surface on the front side of the cylinder 519 to the guide wheel fixing plate 505, threaded holes are formed in two ends of the synchronous connecting rods 7, the two synchronous connecting rods 7 are respectively connected with the buffers 5 on two sides of the T-shaped stop block 4, and screw rods at two end parts of the synchronous connecting rods 7 respectively penetrate through the guide wheel fixing plates 505 of the buffers 5 on two sides and are locked and fixed by nuts;

in order to avoid the situation that the buffer 5 on one side fails, the mass block 3 cannot limit and buffer after swinging to the side, the buffers 5 on the two sides of the T-shaped stop block 4 can be in linkage action by arranging a synchronous connecting rod 7, threaded holes are formed in the two ends of the synchronous connecting rod 7, the synchronous connecting rod 7 is respectively connected with the buffers 5 on the two sides of the T-shaped stop block 4, the connection positions are connected by bolts, and the number of the synchronous connecting rods 7 is 2 or 4; the anchor wheels 602 fixed below the guide wheel fixing plate are in contact with the ground, and the overall rigidity of the buffer connected to both sides can be improved by the limit supporting action of the ground on the anchor wheels 602, and the wheel fixing plate 505, the synchronous link 7 connected and fixed thereto, and the guide wheel 506 are prevented from rotating circumferentially in the axial direction of the guide rod 510.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cushion stop device for harmonious mass damper of one-way pendulum-type which characterized in that: comprises a T-shaped stop block (4), a buffer (5), a supporting foot wheel assembly (6) and a synchronous connecting rod (7);

the T-shaped stop block (4) is installed on the bottom surface of the mass block (3), the mass block (3) is hung on a steel beam (1) at the top through a swinging rope (2), the length direction of the T-shaped stop block (4) is consistent with the swinging direction of the mass block (3), the T-shaped stop block (4) swings along with the mass block (3), the buffers (5) are arranged on two sides of the T-shaped stop block (4) along the swinging direction of the mass block (3), and each buffer (5) comprises a buffer body (501), a buffer body fixing frame (502), a connecting bolt (503), a return spring (504), a guide wheel fixing plate (505) and a guide wheel (506); the buffer body (501) comprises a cylinder barrel (519), a rear end cover (507), a front end cover (512), a guide sleeve (508), a guide rod (510) and a piston (511);

the cylinder barrel (519) is cylindrical with two open ends, a rear end cover (507) and a front end cover (512) are arranged on two end faces of the cylinder barrel (519), the rear end cover (507) and the front end cover (512) are in threaded fastening connection with the cylinder barrel (519) and used for limiting and fixing a guide sleeve (508), a guide rod (510) and a piston (511) are fixedly arranged into a whole, the guide rod (510) penetrates through the rear end cover (507), the front end cover (512) and the guide sleeve (508) on two sides of the inside of the cylinder barrel (519), the piston (511) divides the chamber of the inside of the cylinder barrel (519) into two chambers, the chamber of the inside is filled with viscous damping media (517), two front and rear flange end plates (509) are fixed on the cylinder barrel (519), bolt holes are formed in the flange end plates (509), and the buffer body (501) is fixedly connected with a flange fixing frame (509) and the buffer body (502) through connecting bolts (503), a guide wheel fixing plate (505) is fixed at the head of the guide rod (510), and the guide wheel (506) is fixed to the guide wheel fixing plate (505) through threaded connection;

the reset spring (504) is a cylindrical spiral compression spring, one end of the reset spring (504) is sleeved on the cylinder barrel (519), the other end of the reset spring (504) is sleeved on the guide wheel fixing plate (505), the free height of the reset spring (504) is the distance from the front side flange face of the cylinder barrel (519) to the guide wheel fixing plate (505), threaded holes are formed in two ends of the synchronous connecting rod (7), the two synchronous connecting rods (7) are respectively connected with the buffers (5) on two sides of the T-shaped stop block (4), and screw rods at the end parts of two ends of the synchronous connecting rod (7) respectively penetrate through the guide wheel fixing plates (505) of the buffers (5) on two sides and are locked and fixed by nuts.

2. The snubbing serving stop block for the tuned mass damper of claim 1, wherein: and a graphite copper sleeve (516) matched with the rod diameter of the guide rod (510) is arranged in the guide sleeve (508).

3. The snubbing serving stop block for the tuned mass damper of claim 1, wherein: have the clearance between cylinder (519) internal diameter and piston (511) external diameter, and the clearance is 0.5-2mm, back end cover (507) and front end housing (512) of cylinder (519) both sides are equipped with lip type sealing washer (514), PTFE combination seal circle (515), dust sealing washer (513) of adaptation pole footpath respectively, back end cover (507) and front end housing (512) all are equipped with O type sealing washer (518) with the inboard contact surface of cylinder (519).

4. The snubbing serving stop block for the tuned mass damper of claim 1, wherein: and a polyurethane buffering and silencing pad is arranged on the outer surface of the guide wheel (506).

5. The snubbing serving stop block for the tuned mass damper of claim 1, wherein: two supporting foot wheel assemblies (6) are arranged in the width direction below the guide wheel fixing plate (505), and each supporting foot wheel assembly comprises a foot wheel fixing plate (601) and a foot wheel (602).

6. The snubbing serving stop block for the tuned mass damper of claim 1, wherein: the buffer (5) is horizontally arranged, and the axial direction of the buffer (5) is vertical to the vertical baffle plate part of the T-shaped stop block (4).