A device for arranging a frequency-tuned mass damper away from a vibration point

Abstract

The present invention relates to the technical field of building shock absorption, and discloses a device for arranging a frequency-tuned mass damper away from a vibration point. The present invention includes a lifting lug, a first steel wire rope, a concentric pulley block, a second steel wire rope, a horizontal frequency-tuned mass damper, a tension spring, and a linear guide rail. The concentric pulley block is suspended and fixed on the ground. The concentric pulley block includes a central axis and a first pulley and a second pulley rotatably arranged on the central axis. The first steel wire rope connects the lifting lug and the concentric pulley block, and the second steel wire rope connects the concentric pulley block and the horizontal frequency-tuned mass damper. The present invention can transmit vibrations in any direction of the upper part of the structure to the horizontal frequency-tuned mass damper installed at the bottom of the structure, which is convenient for the early installation and later maintenance of the horizontal frequency-tuned mass damper.

Description

Technical Field

[0001] The invention relates to the technical field of building shock absorption, in particular to a device for arranging a frequency-modulated mass damper away from a vibration point. Background Art

[0002] In order to control the horizontal or vertical vibration of the building structure under the excitation of external loads, tuned mass dampers are often arranged at the vibration point of the structure. For example, a horizontal tuned mass damper is arranged at the top of the structure for a tall structure, and a vertical tuned mass damper is arranged at the point where the floor vibration acceleration is maximum for a long-span structure. Both types of tuned mass dampers need to be arranged near the vibration point, that is, the tuned mass dampers need to be arranged in the upper structure. Such an arrangement will increase the difficulty of the initial installation of the tuned mass damper and the subsequent maintenance costs. Therefore, a device was invented that can transmit the vibration of the upper structure to the bottom of the structure, and then a horizontal tuned mass damper is installed at the bottom of the structure, so that the vibration of the upper structure can be transmitted to the horizontal tuned mass damper at the bottom of the structure. Summary of the invention

[0003] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a device for arranging a frequency-tuned mass damper away from a vibration point.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for arranging a frequency-tuned mass damper away from a vibration point, comprising a lifting eye, a first steel wire rope, a concentric pulley block, a second steel wire rope, a horizontal frequency-tuned mass damper, a tension spring and a linear guide rail, wherein the concentric pulley block is suspended and fixed on the ground, the concentric pulley block comprises a central axis and a first pulley and a second pulley rotatably arranged on the central axis, the first pulley and the second pulley are concentric and fixed together and cannot rotate relative to each other, the lifting eye is connected to the structural vibration point, one end of the first steel wire rope is connected to the lifting eye, and the other end is wound around the first pulley of the concentric pulley block, one end of the second steel wire rope is wound around the second pulley, and the other end is connected to the horizontal frequency-tuned mass damper, the winding directions of the first steel wire rope and the second steel wire rope are opposite, a tension spring is fixed on the other side of the horizontal frequency-tuned mass damper, the other end of the tension spring is fixed to the ground or other fixed objects, the horizontal frequency-tuned mass damper is slidably arranged on the linear guide rail, and the linear guide rail is fixed on the ground.

[0005] Preferably, the second pulley is larger than the first pulley, and a concentric pulley group is used to amplify the vibration amplitude of the superstructure, and the amplified vibration is transmitted to the horizontal frequency-tuned mass damper, thereby improving the energy dissipation effect of the horizontal frequency-tuned mass damper.

[0006] Preferably, the first steel wire rope and the second steel wire rope are wound around the concentric pulley block with a certain number of initial winding turns to ensure that the first steel wire rope and the second steel wire rope can be always tightly wound around the pulley during movement.

[0007] Preferably, center lines of the second steel wire rope and the tension spring coincide with each other.

[0008] Preferably, a sliding block which can slide along the linear guide rail is provided on the linear guide rail, and the horizontal frequency-modulated mass damper and the sliding block are fixed.

[0009] The technical effect of the present invention is that the present invention can transmit vibrations in any direction on the upper part of the structure to the horizontal frequency-tuned mass damper installed at the bottom of the structure, which is convenient for the early installation and later maintenance of the horizontal frequency-tuned mass damper, and the vibration amplitude of the upper structure can be amplified through the concentric pulley group, and the amplified vibration can be transmitted to the horizontal frequency-tuned mass damper, thereby improving the energy dissipation effect of the horizontal frequency-tuned mass damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention;

[0011] Figure 2 It is a structural schematic diagram of the concentric pulley block of the present invention.

[0012] In the figure: 1. lifting ear; 2. first steel wire rope; 3. concentric pulley block; 31. central axis; 32. first pulley; 33. second pulley; 4. second steel wire rope; 5. horizontal frequency-modulated mass damper; 6. tension spring; 7. linear guide rail; 8. slider; 9. main structure. DETAILED DESCRIPTION

[0013] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0014] Embodiment: A device for arranging a frequency-tuned mass damper away from a vibration point, such as Figure 1-Figure 2As shown, it includes a lifting ear, a first steel wire rope, a concentric pulley block, a second steel wire rope, a horizontal frequency-modulated mass damper, a tension spring and a linear guide rail, wherein the concentric pulley block is suspended and fixed on the ground, wherein the concentric pulley block includes a central axis and a first pulley and a second pulley rotatably arranged on the central axis, wherein the first pulley and the second pulley are concentric and fixed together and cannot rotate relative to each other, that is, the first pulley and the second pulley rotate simultaneously and have the same angular velocity, wherein the lifting ear is connected to a structural vibration point, wherein one end of the first steel wire rope is connected to the lifting ear, and the other end is wound around the first pulley of the concentric pulley block, wherein one end of the second steel wire rope is wound around the second pulley, and the other end is wound around the first pulley of the concentric pulley block, wherein one end of the second steel wire rope is wound around the second pulley, and the other end is wound around the second pulley. The first end is connected to a horizontal frequency-modulated mass damper, the second steel wire rope is arranged horizontally, the winding directions of the first steel wire rope and the second steel wire rope are opposite, the vibration transmission is realized by the first steel wire rope, the second steel wire rope and the concentric pulley group, and at the same time, any vibration direction at the structural vibration point is converted into a horizontal direction and then transmitted to the horizontal frequency-modulated mass damper, a tension spring is fixed on the other side of the horizontal frequency-modulated mass damper, and the other end of the tension spring is fixed to the ground or other fixed objects, the horizontal frequency-modulated mass damper is slidably arranged on a linear guide rail, and the linear guide rail is fixed on the ground, so that the first steel wire rope and the second steel wire rope are always kept in a taut state.

[0015] The second pulley is larger than the first pulley, and a concentric pulley group is used to amplify the vibration amplitude of the upper structure, and the amplified vibration is transmitted to the horizontal frequency-tuned mass damper, thereby improving the energy dissipation effect of the horizontal frequency-tuned mass damper.

[0016] The first steel wire rope and the second steel wire rope are wound around the concentric pulley block with a certain number of initial winding turns to ensure that the first steel wire rope and the second steel wire rope can be tightly wound around the pulleys during movement.

[0017] The center lines of the second steel wire rope and the tension spring coincide with each other.

[0018] The linear guide rail is provided with a sliding block which can slide along the linear guide rail, and the horizontal frequency-modulated mass damper is fixed to the sliding block.

[0019] When the main structure vibrates, the vibration displacement of the vibration point is amplified by the concentric pulley set and then transmitted to the horizontal frequency-tuned mass damper. The energy-absorbing components in the horizontal frequency-tuned mass damper are used to dissipate energy, thereby controlling the vibration of the structure. This can be used to improve the left and right shaking (such as wind vibration) of tall structures (such as one-way tubes).

[0020] 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 device for arranging a frequency-tuned mass damper away from a vibration point, characterized in that: It includes a lifting ear, a first steel wire rope, a concentric pulley block, a second steel wire rope, a horizontal frequency-modulated mass damper, a tension spring and a linear guide rail. The concentric pulley block is suspended and fixed on the ground. The concentric pulley block includes a central axis and a first pulley and a second pulley rotatably arranged on the central axis. The second pulley is larger than the first pulley. The first pulley and the second pulley are concentric and fixed together and cannot rotate with each other. The lifting ear is connected to the structural vibration point. One end of the first steel wire rope is connected to the lifting ear, and the other end is wound around the first pulley of the concentric pulley block. One end of the second steel wire rope is wound around the second pulley, and the other end is connected to the horizontal frequency-modulated mass damper. The winding directions of the first steel wire rope and the second steel wire rope are opposite. The first steel wire rope and the second steel wire rope are wound around the concentric pulley block with an initial number of winding turns. A tension spring is fixed on the other side of the horizontal frequency-modulated mass damper. The other end of the tension spring is fixed to the ground or other fixed objects. The horizontal frequency-modulated mass damper is slidably arranged on the linear guide rail, and the linear guide rail is fixed on the ground.

2. A device for arranging a frequency-tuned mass damper away from a vibration point according to claim 1, characterized in that: The center lines of the second steel wire rope and the tension spring coincide with each other.

3. The device for arranging a frequency-tuned mass damper away from a vibration point according to claim 1, characterized in that: The linear guide rail is provided with a sliding block which can slide along the linear guide rail, and the horizontal frequency-modulated mass damper is fixed to the sliding block.

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