CN110541492B - Collision gap self-coordination device - Google Patents

Abstract

The invention relates to a collision clearance self-coordination device, comprising: a fixed chassis; the upper end of the fixed rod piece is fixed at the lower end of the fixed chassis, and the fixed rod piece is provided with a return spring; a reset slide block, which is sleeved on the fixed rod piece and is connected with the upper part of the reset spring; the lower end of the limiting plate is hinged with one end of each supporting member, and the other end of each supporting member is hinged on the reset sliding block; and one end of the movable edge plate is connected with the limiting plate in a sliding manner, and the other end of the movable edge plate is hinged with the fixed chassis. The device realizes the self-adjustment of the optimal collision clearance of the damper under different excitations, has the characteristics of excitation strength self-adaptation, wide vibration attenuation frequency band and robustness, and realizes the self-adaptation adjustment of the collision clearance according to the size of the excitation load, thereby reducing the undesirable vibration of the structure in the horizontal direction and greatly improving the vibration attenuation effect.

Description

A collision gap self-coordination device

technical field

The invention belongs to the field of vibration control of civil engineering structures, in particular to a collision clearance self-coordination device.

Background technique

With the rapid development of social economy, the size of building structure is increasing day by day, from high-rise buildings to super high-rise buildings. At the same time, threats to tall buildings such as seismic action and wind loads are increasing day by day. In recent years, in the previous major earthquakes and wind disasters, structural collapse and damage accidents have occurred frequently, and the economic losses are difficult to estimate. Therefore, the development and application of structural vibration reduction technology is an inevitable trend.

Passive control technology has the characteristics of maturity, high cost performance, high reliability and easy maintenance, and is widely used in structural vibration reduction. Among them, the collision damper and the suspension mass pendulum damper are two common vibration reduction control devices, and many obvious defects are found in the practical test: 1) The mass of the collision damper itself is too large, which has an adverse effect on the main structure; 2 ) There is a problem of noise pollution in the collision process; 3) The single tuning function of the suspension mass pendulum damper lacks an energy dissipation mechanism; 4) The single tuning device has extremely high requirements on the accuracy of the control frequency, and the vibration reduction frequency band is narrow.

At present, during the collision process of the collision damper, the collision gap cannot be adaptively adjusted, and the collision gap self-coordination function cannot be realized according to the magnitude of the excitation load, so that the adverse vibration of the structure in the horizontal direction cannot be effectively reduced.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a kind of collision clearance self-coordination device in order to solve the above problem, which is used for the collision damper to realize adaptive adjustment of collision clearance according to the magnitude of the excitation load during collision, so as to reduce the structure of the structure in the horizontal direction. Bad vibration, improve vibration damping effect.

The object of the present invention is achieved through the following technical solutions:

A collision gap self-coordination device, comprising:

a fixed chassis;

a fixed rod, the upper end of which is fixed on the lower end of the fixed chassis, and a return spring is arranged on the fixed rod;

a reset slider, sleeved on the fixed rod and connected to the upper part of the reset spring;

A plurality of limit plates, the limit plates enclose a collision chamber, the fixed chassis is located at the bottom of the collision chamber, the lower ends of the limit plates are hinged with one end of the plurality of support members, and the other end of the support members is hinged. One end is hinged on the reset slider; and

A plurality of movable edge plates, one end of the movable edge plate is slidably connected with the limit plate, and the other end of the movable edge plate is hinged with the fixed chassis.

Further, the middle part of the support member is further provided with a conversion rod, one end of the conversion rod is hinged with the middle part of the support member, and the other end is hinged with the fixed chassis.

Further, the fixing rod is further provided with a blocking member on the upper part of the sliding block, and the blocking member is composed of a plurality of protrusions with different heights and an end blocking plate.

Further, the lower part of the limiting plate is provided with a slide rail, and the end of the movable edge plate is provided with a pulley, and the pulley slides up and down along the slide rail.

Further, the movable edge plate is made of a soft rubber roll that provides deformability.

Further, the fixed chassis is circular.

Further, the limiting plate is an arc-shaped plate, a plurality of arc-shaped plates are connected by at least one elastic connecting piece, and the limiting plate encloses a cylindrical collision chamber.

Further, the movable edge plate is fan-shaped.

Further, there are four said limit plates and movable edge plates.

Further, the diameter of the fixed chassis is 1/3-2/3 of the diameter of the cylindrical collision chamber.

The specific working principle of the device is that the collision damper (such as a damping ball) collides with the collision chamber of the device, and the initial collision gap cannot obtain the optimal collision effect. As the collision force increases, the collision limit plate expands outward, and the movable edge The plate moves down along the slide rail, the support member rotates around the conversion rod, and at the same time drives the reset slider to move upward. At this time, when the excitation is large, the collision gap becomes larger, and the damper exerts the best vibration reduction effect. When it is small, the reset slider is hindered by the tension of the reset spring and gradually returns to its original position, and the collision gap becomes smaller. The adjustment of the optimal collision gap of the damper under different seismic intensities and wind load intensities is realized.

Compared with the prior art, the present invention proposes a collision clearance self-coordination unit, which realizes the self-adjustment of the optimal collision clearance of the damper under different excitations, and has the characteristics of excitation intensity self-adaptation, vibration reduction frequency bandwidth, and robustness; The size of the load realizes the adaptive adjustment of the collision gap, thereby reducing the adverse vibration of the structure in the horizontal direction and greatly improving the vibration reduction effect.

Description of drawings

1 is a schematic diagram of the overall structure of an embodiment of the present invention;

Fig. 2 is the C-C sectional view of Fig. 1;

Figure 3 is a schematic diagram of the connection of the limit plate;

In the figure: 2-1-limiting plate, 2-2-fixed chassis, 2-3-sector movable edge plate, 2-4-reset slider, 2-5-support member, 2-6-transition rod, 2-7-return spring, 2-8-fixed rod, 2-9-stop.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example

A collision clearance self-coordination device, as shown in Figures 1 and 2, consists of a limit plate 2-1, a fixed chassis 2-2, a fan-shaped movable edge plate 2-3, a reset slider 2-4, and a support member 2-5 , Conversion rod 2-6, return spring 2-7, fixed rod 2-8, blocking member 2-9.

The limit plate 2-1 encloses the collision area, and the limit plate 2-1 is an arc vertical plate. In this embodiment, four limit plates 2-1 are arranged to form a cylindrical structure, as shown in Figure 3, two adjacent limit plates The position plates 2-1 are softly connected through the upper, middle and lower springs, and the lower end of each limit plate is connected to the reset slider 2-4 through the support member 2-5, and the reset slider 2-4 is nested in the fixed position. The upper and lower ends of the rod member 2-8 are provided with a return spring 2-7, the upper part of the fixed rod member is provided with a blocking member 2-9, and the middle position of the support member 2-5 is provided with a steering plate, which is connected to the fixed rod through the conversion rod member 2-6. Chassis 2-2, there is a slide rail inside the limit plate, mainly the fan-shaped movable edge plate 2-3 provides relatively free sliding deformation when the limit plate moves horizontally, and the fan-shaped movable edge plate 2-3 is composed of four parts, which are The limit plate is used together. The fan-shaped movable edge plate 2-3 is made of soft rubber coil. When the limit plate 2-1 expands outward due to the impact, the rubber coil can provide sufficient deformation capacity, which is the same as the fixed chassis 2- 2Connect and stretch gently. The support member 2-5 and the conversion rod 2-6 form a rotating mechanism, which is similar to the expansion mechanism of the "umbrella", which is flexible and fast, and mainly ensures that the damper realizes the self-adaptive function of excitation intensity.

In this embodiment, the blocking member 2-9 is located on the fixed rod member 2-8, and is mainly composed of protrusions of different heights and end blocking plates, which provide the damping force of the reset slider under different excitation intensities. The reset slider 2- 4 can slide up and down along the fixed rod 2-8, and is hindered by the return spring 2-7 and the blocking piece 2-9.

In specific use, the device is installed at the lower part of the collision damper to cause vertical and horizontal vibration of the controlled structure under the action of earthquake and wind loads. At this time, the damper plays the role of vibration absorption and energy dissipation, specifically:

As the collision force increases, the collision damper (such as a damping ball) hits the limit plate 2-1 and expands outward, the fan-shaped movable edge plate 2-3 moves down along the slide rail, and the support member 2-5 wraps around the conversion rod 2- 6 rotates, and drives the reset slider 2-4 to move upward at the same time. At this time, when the excitation is large, the collision gap becomes larger, and the damper exerts the best vibration reduction effect. When the excitation gradually decreases, the reset slider is affected by the reset spring 2- The pulling force of 7 and the blocking effect of the blocking members 2-9 gradually return to the original position, the collision gap becomes smaller, and the collision gap self-coordination function is realized according to the size of the excitation load, thereby effectively reducing the bad vibration of the structure in the horizontal direction.

The foregoing description of the embodiments is provided to facilitate understanding and use of the invention by those of ordinary skill in the art. It will be apparent to those skilled in the art that various modifications to these embodiments can be readily made, and the generic principles described herein can be applied to other embodiments without inventive step. Therefore, the present invention is not limited to the above-mentioned embodiments, and improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should all fall within the protection scope of the present invention.

Claims (10)

1. A collision gap self-coordination apparatus, comprising:

a fixed chassis;

the upper end of the fixed rod piece is fixed at the lower end of the fixed chassis, and the fixed rod piece is provided with a return spring;

the reset sliding block is sleeved on the fixed rod piece and connected to the upper part of the reset spring;

the fixed chassis is positioned at the bottom of the collision chamber, the lower end of the limiting plate is hinged with one end of each of the plurality of supporting members, and the other end of each of the supporting members is hinged to the reset sliding block; and

and one end of the movable edge plate is connected with the limiting plate in a sliding manner, and the other end of the movable edge plate is hinged with the fixed chassis.

2. The self-coordination device for collision clearance according to claim 1, wherein a switching rod is further provided at the middle part of the support member, one end of the switching rod is hinged with the middle part of the support member, and the other end is hinged with the fixed chassis.

3. The self-coordination device for collision clearance according to claim 1, wherein said fixed rod member further comprises a blocking member at an upper portion of said reset slider, said blocking member is composed of a plurality of protrusions with different heights and an end blocking plate.

4. The collision gap self-coordination device according to claim 1, wherein a slide rail is provided at the lower part of said limit plate, and a pulley is provided at the end of said movable edge plate, said pulley sliding up and down along said slide rail.

5. A collision gap self-tuning device according to claim 1, wherein the movable edge plate is made of a soft rubber coil providing deformability.

6. A collision gap self-tuning device according to claim 1, wherein the fixed chassis is circular.

7. The collision gap self-coordination device according to claim 6, wherein said limiting plates are arc-shaped plates, and are connected by at least one elastic connecting member, and said limiting plates define a cylindrical collision chamber.

8. The collision gap self-tuning device of claim 7, wherein the movable edge plate is fan-shaped.

9. The collision gap self-coordination device according to claim 8, wherein said limiting plate and said movable edge plate are provided with 4 pieces.

10. The self-tuning device of claim 7 wherein the diameter of the stationary base plate is 1/3-2/3 of the diameter of the cylindrical collision chamber.

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