A tuned mass damper for easy adjustment of damping and vibration frequency

Abstract

The present invention relates to the technical field of building shock absorption, and discloses a tuned mass damper that is convenient for adjusting damping and vibration frequency. The present invention includes a mass block, a guide rod, a main spring, an upper mounting plate, and a lower mounting plate, wherein the mass block is fixed at the center position of the upper mounting plate, the main spring is placed between the upper mounting plate and the lower mounting plate, the guide rod passes through the main spring through a guide hole opened on the upper mounting plate and is fixed to the lower mounting plate, the upper mounting plate and the lower mounting plate are directly provided with a plurality of laterally arranged viscous dampers and adjustment spring components, and the viscous dampers and adjustment spring components are fixed by mounting components. The present invention horizontally mounts the viscous damper and the adjustment spring component by means of mounting components, thereby eliminating the installation restrictions of TMD on the viscous damper and increasing the size selection range of the viscous damper.

Description

Technical Field

[0001] The invention relates to the technical field of building shock absorption, in particular to a tuned mass damper which is convenient for adjusting damping and vibration frequency. Background Art

[0002] With the continuous development of my country's social economy and science and technology, various high-rise or large-span building structures have been increasingly used in urban construction. The natural frequency of such buildings is often low. Earthquakes, strong winds or pedestrians are prone to cause resonance of the main structure, which may affect the comfort of the structure or damage the structure itself, or even cause major safety accidents. In response to such problems, engineering design adopts the method of adding tuned mass dampers to the main structure to achieve vibration reduction. The tuned mass damper (TMD) is mainly composed of mass blocks, springs and damping systems. Due to its low cost and simple structure, it is widely used in wind and earthquake resistance. The working principle of TMD is to adjust its own vibration frequency to be close to the natural frequency of the main structure. When the main structure vibrates, TMD vibrates due to resonance, and dissipates the vibration energy through the damping system to achieve a shock absorption effect. Traditional TMDs use viscous dampers to provide damping. The damping force of the viscous damper is a fixed value, and its size is limited by the installation space of the TMD, making it difficult to select. In addition, the viscous damper is connected to the TMD body, making it difficult to adjust and maintain in the later stage. Traditional TMD frequency adjustment is mainly achieved by adjusting the spring stiffness, which is cumbersome to operate in practice and difficult to adjust. Utility Model Content

[0003] In order to solve the technical problems existing in the above-mentioned prior art, the present invention provides a tuned mass damper which is convenient for adjusting damping and vibration frequency.

[0004] To achieve the above object, the present invention adopts the following technical scheme: a tuned mass damper that is convenient for adjusting damping and vibration frequency, comprising a mass block, a guide rod, a main spring, an upper mounting plate, and a lower mounting plate, wherein the mass block is fixed at the center of the upper mounting plate, the main spring is placed between the upper mounting plate and the lower mounting plate, and the guide rod passes through a guide hole opened on the upper mounting plate and then passes through the main spring and is fixed to the lower mounting plate;

[0005] A plurality of transverse viscous dampers are arranged on the front and rear sides between the upper mounting plate and the lower mounting plate, and the two ends of the viscous damper are horizontally mounted between the upper mounting plate and the lower mounting plate through mounting components, and the mounting components include ear plate seats, ear plates, pin shaft components and connecting rods, and the upper mounting plate and the lower mounting plate are respectively fixed with ear plate seats, and two ear plates with round holes are fixed to the ear plate seats, and a mounting distance is reserved between the two ear plates, and a connecting rod is installed in the middle of the two ear plates through a pin shaft component, and the connecting rod can rotate around the pin shaft component, and the corresponding connecting rod on the upper mounting plate, the connecting rod on the lower mounting plate and one end of the viscous damper are connected together through the pin shaft component, and when the upper mounting plate is lifted and lowered, the mounting component drives the viscous damper to extend and retract to form a damping system;

[0006] A plurality of transverse adjusting spring components are arranged on the left and right sides between the upper mounting plate and the lower mounting plate, and both ends of the adjusting spring components are also fixed horizontally by the mounting components to form a frequency adjusting system.

[0007] By installing the viscous damper and the adjusting spring components horizontally, the installation components convert the lifting movement of the upper mounting plate into lateral movement, driving the viscous damper and the adjusting spring components to expand and contract to achieve shock absorption, thus solving the problem of limited installation space caused by the original vertical installation and expanding the scope of application; at the same time, the viscous damper, the adjusting spring and the installation components are all connected by pin components, which is convenient for replacement and maintenance.

[0008] Preferably, a plurality of through holes are provided on the ear plate seat, and a plurality of threaded holes are provided around the upper mounting plate and the lower mounting plate. The ear plate seat and the upper mounting plate and the lower mounting plate are fixed by bolts, so that the distance between the ear plate seats can be adjusted to match viscous dampers of different sizes, thereby increasing the selection range of viscous dampers and realizing the energy consumption effect adjustment function.

[0009] Preferably, the adjusting spring component comprises an adjusting spring, and connecting plates are fixedly provided at both ends of the adjusting spring, and the connecting plates are fixed at the connection between the two connecting rods of the mounting component.

[0010] Preferably, a retractable connecting rod is provided in the adjusting spring, and both ends of the connecting rod are respectively fixed to the connecting plate to guide the spring.

[0011] Preferably, the lower mounting plate and the guide rod are threadedly connected to facilitate installation and disassembly.

[0012] Preferably, the ear plate and the ear plate seat, as well as the mass block and the upper mounting plate are fixed by welding.

[0013] The present invention has the following beneficial effects: the present invention horizontally installs the viscous damper and the adjusting spring component through the installation component, which changes the installation method of the viscous damper and the adjusting spring in the traditional TMD, eliminates the installation restrictions of the TMD on the viscous damper, and increases the size selection range of the viscous damper; at the same time, the viscous damper and the adjusting spring component are connected by the pin shaft and the installation component, which is convenient for disassembly, assembly and replacement, realizes the damping adjustment and frequency adjustment functions, and is convenient for later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of the installation of the viscous damper of the present invention;

[0016] Figure 3 This is a schematic diagram of the installation of the adjusting spring component of the present invention;

[0017] Figure 4 for Figure 1 A schematic diagram of the structure of the adjusting spring component;

[0018] Figure 5 for Figure 1 Schematic diagram of the structure of the center pin shaft component.

[0019] In the figure: 1. mass block; 2. guide rod; 3. main spring; 4. upper mounting plate; 5. lower mounting plate; 6. viscous damper; 7. mounting component; 71. ear plate seat; 72. ear plate; 73. pin shaft component; 731. pin shaft; 732. retaining ring; 733. positioning screw; 74. connecting rod; 8. adjusting spring component; 81. adjusting spring; 82. connecting plate; 83. connecting rod; 9. threaded hole; 10. through hole; 11. bolt. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0021] Embodiment: A tuned mass damper that facilitates adjustment of damping and vibration frequency, such as Figure 1-Figure 5 As shown, it includes a mass block 1, a guide rod 2, a main spring 3, an upper mounting plate 4 and a lower mounting plate 5, wherein the mass block 1 is fixed at the center of the upper mounting plate 4, the main spring 3 is placed between the upper mounting plate 4 and the lower mounting plate 5, the guide rod 2 passes through the main spring 3 through the guide hole opened on the upper mounting plate 4 and is fixed on the lower mounting plate 5, and the guide rod 2 and the main spring 3 are arranged at the four corners of the damper;

[0022] A plurality of transverse viscous dampers 6 are symmetrically arranged on the front and rear sides between the upper mounting plate 4 and the lower mounting plate 5. The two ends of the viscous damper 6 are horizontally mounted between the upper mounting plate 4 and the lower mounting plate 5 through mounting components 7. The mounting components 7 include ear plate seats 71, ear plates 72, pin shaft components 73 and connecting rods 74. The upper mounting plate 4 and the lower mounting plate 5 are respectively fixed with ear plate seats 71. Two ear plates 72 with round holes are fixed to the ear plate seats 71. An installation distance is left between the two ear plates 72. A connecting rod 74 is installed between the two ear plates 72 through a pin shaft component 73. The connecting rod 74 can rotate around the pin shaft component 73. The corresponding connecting rods 74 on the upper mounting plate 4, the connecting rods 74 on the lower mounting plate 5 and one end of the viscous damper 6 are connected together through the pin shaft component 73. When the upper mounting plate 4 is lifted and lowered, the mounting component 7 drives the viscous damper 6 to extend and retract to form a damping system.

[0023] A plurality of transverse adjusting spring components 8 are symmetrically arranged on the left and right sides between the upper mounting plate 4 and the lower mounting plate 5. Both ends of the adjusting spring components 8 are also horizontally fixed by the mounting components 7 to form a frequency adjusting system.

[0024] The number of the viscous damper 6 and the adjusting spring component 8 is selected according to the actual application and is fixed by the pin shaft component 73, so that the number of the viscous dampers 6 and the adjusting spring component 8 can be increased or decreased conveniently.

[0025] The ear plate seat 71 is provided with a plurality of through holes 10, and the number of through holes 10 is 4, which are evenly distributed around the ear plate seat 71. The ear plate seat 71 and the upper mounting plate 4 and the lower mounting plate 5 are fixed by bolts. The upper mounting plate 4 and the lower mounting plate 5 are provided with a plurality of threaded holes 9 around them, and each side of the upper mounting plate 4 and the lower mounting plate 5 is provided with two rows of threaded holes 9, which is convenient for adjusting the distance between the ear plate seats 71 to match viscous dampers of different sizes, thereby increasing the selection range of viscous dampers, and also convenient for adding or reducing the mounting components 7 to adapt to different numbers of viscous dampers 6 or adjusting the spring components 8 to realize the energy consumption effect adjustment function.

[0026] The adjusting spring component 8 comprises an adjusting spring 81 , and connecting plates 82 are fixedly disposed at both ends of the adjusting spring 81 . The connecting plates 82 are fixed at the connection of the two connecting rods 74 of the mounting component 7 .

[0027] A retractable connecting rod 83 is provided inside the adjusting spring 81 , and both ends of the connecting rod 83 are respectively fixed to the connecting plate 82 . The connecting pipe is a retractable structure of a large pipe covering a small pipe, which guides the adjusting spring 81 .

[0028] The pin shaft component 73 includes a pin shaft 731, a retaining ring 732 and a positioning screw 733. One end of the pin shaft 731 passes through all the components that need to be connected together and is fixed with the retaining ring 732 and the positioning screw 733 to facilitate installation and disassembly.

[0029] The lower mounting plate 5 is threadedly connected to the guide rod 2, and the main spring 3 is sleeved on the guide rod 2, which is convenient for installation and replacement, increases the applicability of the damper, and saves maintenance costs.

[0030] The ear plate 72 and the ear plate seat 71 , as well as the mass block 1 and the upper mounting plate 4 are fixed by welding.

[0031] When the resonant tuned mass damper is in use, the upper mounting plate 4 moves up and down, and the mounting structure between the upper mounting plate 4 and the lower mounting plate 5 drives the viscous damper 6 and the adjustment spring 81 to expand and contract laterally, thereby dissipating the vibration energy and achieving a shock absorption effect. Since the adjustment spring component 8 and the mounting component 7 are connected by a pin 731, different stiffnesses can be replaced to achieve the frequency adjustment function, and it is also convenient for replacement and maintenance; the viscous damper and the mounting component 7 are also connected by a pin 731, which is convenient for replacement; at the same time, the mounting component 7 and the upper mounting plate 4 and the lower mounting plate 5 are connected by bolts, and the spacing between the mounting components 7 is easy to adjust, so as to adapt to the viscous damper 6 with different damping ranges and achieve adjustable damping.

[0032] 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 tuned mass damper for adjusting damping and vibration frequency, comprising a mass block (1), a guide rod (2), a main spring (3), an upper mounting plate (4), and a lower mounting plate (5), characterized in that: The mass block (1) is fixed at the center of the upper mounting plate (4), the main spring (3) is placed between the upper mounting plate (4) and the lower mounting plate (5), and the guide rod (2) passes through the main spring (3) through a guide hole opened on the upper mounting plate (4) and is then fixed on the lower mounting plate (5); A plurality of transverse viscous dampers (6) are provided on the front and rear sides between the upper mounting plate (4) and the lower mounting plate (5); the two ends of the viscous dampers (6) are horizontally mounted between the upper mounting plate (4) and the lower mounting plate (5) via mounting components (7); the mounting components (7) include an ear plate seat (71), an ear plate (72), a pin shaft component (73) and a connecting rod (74); the upper mounting plate (4) and the lower mounting plate (5) are respectively fixed with ear plate seats (71); the ear plate seats (71) are fixed with two pieces of circular holes The ear plates (72) are provided with an installation distance between the two ear plates (72). A connecting rod (74) is installed between the two ear plates (72) through a pin shaft component (73). The connecting rod (74) can rotate around the pin shaft component (73). The corresponding connecting rod (74) on the upper mounting plate (4), the connecting rod (74) on the lower mounting plate (5) and one end of the viscous damper (6) are connected together through the pin shaft component (73). When the upper mounting plate (4) moves up and down, the mounting component (7) drives the viscous damper (6) to expand and contract, thereby forming a damping system. A plurality of transverse adjustment spring components (8) are arranged on the left and right sides between the upper mounting plate (4) and the lower mounting plate (5), and the two ends of the adjustment spring components (8) are also fixed horizontally by the mounting components (7) to form a frequency adjustment system.

2. A tuned mass damper for facilitating adjustment of damping and vibration frequency according to claim 1, characterized in that: The ear plate seat (71) is provided with a plurality of through holes (10), the upper mounting plate (4) and the lower mounting plate (5) are provided with a plurality of threaded holes (9) around them, and the ear plate seat (71) and the upper mounting plate (4) and the lower mounting plate (5) are fixed by bolts.

3. A tuned mass damper for facilitating adjustment of damping and vibration frequency according to claim 1 or 2, characterized in that: The adjusting spring component (8) comprises an adjusting spring (81), and connecting plates (82) are fixedly provided at both ends of the adjusting spring (81), and the connecting plates (82) are fixed at the connection between two connecting rods (74) of the mounting component (7).

4. A tuned mass damper for facilitating adjustment of damping and vibration frequency according to claim 3, characterized in that: A retractable connecting rod (83) is provided inside the adjusting spring (81), and two ends of the connecting rod (83) are respectively fixed to the connecting plate (82).

5. A tuned mass damper for facilitating adjustment of damping and vibration frequency according to claim 1, characterized in that: The lower mounting plate (5) and the guide rod (2) are threadedly connected.

6. A tuned mass damper for facilitating adjustment of damping and vibration frequency according to claim 1, characterized in that: The ear plate (72) and the ear plate seat (71), as well as the mass block (1) and the upper mounting plate (4) are fixed by welding.

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