Tuned mass damper

Abstract

The utility model relates to the field of dampers, in particular to a tuned mass damper which comprises a rectangular bottom plate, a first rectangular groove is formed in the top of the bottom plate, a viscous damper is installed on the top of the bottom plate, and a supporting steel plate is installed on the top of the viscous damper. When the device is used, the first sliding plate can slide out of the first rectangular groove by pulling the first sliding plate, the spring guide rod and the damping spring which are installed on the first sliding plate drive the second sliding plate to slide from the second rectangular groove, and the second sliding plate is detached from the top of the spring guide rod and the top of the damping spring; and after replacement is completed, the handle is loosened, the first sliding plate and the second sliding plate return to original positions under the action of the reset springs, and the replacement mode is convenient, saves time and labor and is high in working efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of dampers, in particular to a tuned mass damper. Background Art

[0002] A tuned mass damper (TMD) consists of a mass, springs, and an energy-dissipating damping system. It achieves vibration reduction by adjusting its vibration frequency to near the primary structural frequency, altering the structural resonance characteristics. The TMD concept was first applied by Frahm in 1909 (Frahm, 1909) to reduce rolling motion and hull vibration in ships. While weighing much less than the object (structure), TMD dampers can reduce the maximum amplitude of an object, thereby preventing discomfort, breakage, or complete damage. They are commonly used in buildings, power transmission, automobiles, ships, and other areas of daily life.

[0003] A tuned mass damper requires a spring to assist in shock absorption. Although the current tuned mass damper has good performance, when the spring needs to be replaced after a period of use, it is more troublesome to replace it because the spring is directly connected to the damper. This method is time-consuming and labor-intensive, and has low work efficiency. Therefore, a tuned mass damper is proposed. Summary of the Invention

[0004] The purpose of the utility model is to solve the shortcomings of the existing tuned mass damper, that is, when the spring needs to be replaced, the spring is directly connected to the damper, which makes the replacement more troublesome, time-consuming, labor-intensive and low-efficiency. A tuned mass damper is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A tuned mass damper comprises a rectangular bottom plate, a first rectangular groove is opened on the top of the bottom plate, a viscous damper is installed on the top of the bottom plate, and a supporting steel plate is installed on the top of the viscous damper.

[0007] Preferably, a first limiting groove is provided in the first rectangular groove, a receiving groove is provided in the first rectangular groove, and a rectangular opening is provided on the supporting steel plate.

[0008] Preferably, a first sliding plate is slidably connected in the first rectangular groove, a handle is fixedly connected to one side of the first sliding plate, first limiting plates are fixedly connected on both sides of the first sliding plate, the first limiting plate is slidably connected to the first limiting groove, a return spring is fixedly connected to one side of the first sliding plate, and one end of the return spring is fixedly connected to the accommodating groove.

[0009] Preferably, the top of the first sliding plate is fixedly connected to a lower sleeve, a spring guide rod is installed on the top of the first sliding plate, a shock-absorbing spring is installed on the top of the first sliding plate, and the spring guide rod and the shock-absorbing spring are both located in the lower sleeve.

[0010] Preferably, a mass block is provided at the bottom of the supporting steel plate, a second rectangular groove is opened at the bottom of both sides of the supporting steel plate, a second limiting groove is opened on both sides of the second rectangular groove, a second sliding plate is slidably connected in the second rectangular groove, a second limiting plate is fixedly connected on both sides of the second sliding plate, and the second limiting plate is slidably connected to the second limiting groove.

[0011] Preferably, the bottom of the second limit plate is fixedly connected to an upper sleeve, the tops of the spring guide rod and the shock-absorbing spring are both installed on the bottom of the second sliding plate, the spring guide rod and the shock-absorbing spring are both located in the upper sleeve, the spring guide rod is located in the rectangular opening, and threaded holes are provided on the support steel plate and the second sliding plate, and fixing bolts are threadedly connected in the threaded holes.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] When the device is in use, the first sliding plate can be pulled to slide out of the first rectangular groove, the first limiting plate can slide in the first limiting groove, the spring guide rod and the shock-absorbing spring installed on the first sliding plate can drive the second sliding plate to slide out of the second rectangular groove, the second sliding plate can drive the second limiting plate to slide out of the second limiting groove, the second sliding plate and the upper sleeve can be removed from the top of the spring guide rod and the shock-absorbing spring, and then the spring guide rod and the shock-absorbing spring can be removed from the first sliding plate for replacement;

[0014] After the replacement is completed, the handle is released, and the first sliding plate and the second sliding plate return to their original positions under the action of the return spring, and are finally fixed by fixing bolts. This replacement method is more convenient, saves time and effort, and has high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a tuned mass damper proposed in the utility model;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the first rectangular slot and the receiving slot of a tuned mass damper proposed by the present invention;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure of the second rectangular slot of a tuned mass damper proposed in the present invention;

[0018] Figure 4This is a three-dimensional structural diagram of the connection relationship between the first sliding plate and the first limiting plate of a tuned mass damper proposed by the utility model.

[0019] In the figure: 1. Base plate; 2. First rectangular groove; 3. Viscous damper; 4. Support steel plate; 5. First limiting groove; 6. Accommodating groove; 7. Rectangular opening; 8. First sliding plate; 9. First limiting plate; 10. Return spring; 11. Lower sleeve; 12. Spring guide rod; 13. Shock-absorbing spring; 14. Mass block; 15. Second rectangular groove; 16. Second limiting groove; 17. Second sliding plate; 18. Second limiting plate; 19. Threaded hole; 20. Fixing bolt. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Reference Figures 1-4 A tuned mass damper includes a rectangular base plate 1, a first rectangular groove 2 is opened on the top of the base plate 1, a viscous damper 3 is installed on the top of the base plate 1, and a supporting steel plate 4 is installed on the top of the viscous damper 3.

[0022] The viscous damper 3 performs vibration reduction through fluid flow.

[0023] Furthermore, a first limiting groove 5 is provided in the first rectangular groove 2 , a receiving groove 6 is provided in the first rectangular groove 2 , and a rectangular opening 7 is provided on the supporting steel plate 4 .

[0024] Among them, the first limiting groove 5 can limit the first sliding plate 8 to prevent the position of the first sliding plate 8 in the first rectangular groove 2 from being offset. The rectangular opening 7 is used to accommodate the spring guide rod 12. When the shock-absorbing spring 13 needs to be replaced, the spring guide rod 12 can be moved out of the rectangular opening 7.

[0025] Furthermore, a first sliding plate 8 is slidably connected in the first rectangular groove 2, a handle is fixedly connected to one side of the first sliding plate 8, first limiting plates 9 are fixedly connected on both sides of the first sliding plate 8, the first limiting plate 9 is slidably connected to the first limiting groove 5, a return spring 10 is fixedly connected to one side of the first sliding plate 8, and one end of the return spring 10 is fixedly connected to the accommodating groove 6.

[0026] Among them, by pulling the first sliding plate 8 by the handle, the first sliding plate 8 slides out of the first rectangular groove 2, and the first limiting plate 9 slides in the first limiting groove 5, and there is a blocking block at the outer end of the first limiting groove 5 to block the first limiting plate 9 to prevent the first limiting plate 9 from falling out of the first limiting groove 5. At this time, the return spring 10 is stretched. After the shock-absorbing spring 13 is replaced, the first sliding plate 8 is reset when the return spring 10 is reset, which is more convenient.

[0027] Furthermore, the top of the first sliding plate 8 is fixedly connected to the lower sleeve 11, the top of the first sliding plate 8 is installed with a spring guide rod 12, the top of the first sliding plate 8 is installed with a shock-absorbing spring 13, and the spring guide rod 12 and the shock-absorbing spring 13 are both located in the lower sleeve 11.

[0028] The spring guide rod 12 guides the shock-absorbing spring 13 to prevent the spring from deflecting when it contracts, and the lower sleeve 11 protects the installation position of the spring and the first sliding plate 8.

[0029] Furthermore, a mass block 14 is provided at the bottom of the supporting steel plate 4, a second rectangular groove 15 is opened at the bottom of both sides of the supporting steel plate 4, a second limiting groove 16 is opened on both sides of the second rectangular groove 15, a second sliding plate 17 is slidably connected in the second rectangular groove 15, and a second limiting plate 18 is fixedly connected on both sides of the second sliding plate 17, and the second limiting plate 18 is slidably connected to the second limiting groove 16.

[0030] Among them, the mass of the mass block 14 can be adjusted as needed to match the natural frequency of the structure. When the handle is pulled and the first sliding plate 8 slides out, the spring guide rod 12 and the shock-absorbing spring 13 drive the second sliding plate 17 to slide from the second rectangular groove 15, and the second sliding plate 17 drives the second limiting plate 18 to slide out from the second limiting groove 16.

[0031] Furthermore, the bottom of the second limit plate 18 is fixedly connected to the upper sleeve, the tops of the spring guide rod 12 and the shock-absorbing spring 13 are both installed on the bottom of the second sliding plate 17, the spring guide rod 12 and the shock-absorbing spring 13 are both located in the upper sleeve, the spring guide rod 12 is located in the rectangular opening 7, and threaded holes 19 are provided on the support steel plate 4 and the second sliding plate 17, and the threaded holes 19 are threadedly connected with fixing bolts 20.

[0032] Among them, the fixing bolt 20 is removed from the threaded hole 19, and after pulling out the second sliding plate 17, the second sliding plate 17 together with the upper sleeve is removed from the top of the spring guide rod 12 and the shock-absorbing spring 13, and then the spring guide rod 12 and the shock-absorbing spring 13 are removed from the first sliding plate 8 for replacement. After the replacement is completed, the handle is released, and the first sliding plate 8 and the second sliding plate 17 return to their original positions under the action of the return spring 10, and finally fixed by the fixing bolt 20. This replacement method does not require the use of professional tools to replace the shock-absorbing spring 13, which saves time and effort while having high work efficiency.

[0033] The working principle of this utility model:

[0034] When the shock-absorbing spring 13 needs to be replaced, the fixing bolt 20 is removed from the threaded hole 19, and the first sliding plate 8 is pulled by the handle. The first sliding plate 8 slides out of the first rectangular groove 2, and the first limiting plate 9 slides in the first limiting groove 5. There is a blocking block at the outer end of the first limiting groove 5 to block the first limiting plate 9 and prevent the first limiting plate 9 from falling out of the first limiting groove 5. At this time, the return spring 10 is stretched, and the spring guide rod 12 and the shock-absorbing spring 13 installed on the first sliding plate 8 drive the second sliding plate 17 to slide from the second rectangular groove 15, and the second sliding plate 17 drives the second limiting plate 18 to slide out of the second limiting groove 16;

[0035] Then remove the second sliding plate 17 together with the upper sleeve from the top of the spring guide rod 12 and the shock-absorbing spring 13, and then remove the spring guide rod 12 and the shock-absorbing spring 13 from the first sliding plate 8 for replacement. After the replacement is completed, release the handle, and the first sliding plate 8 and the second sliding plate 17 return to their original positions under the action of the return spring 10, and finally fix them with the fixing bolts 20. This replacement method is more convenient, saves time and effort, and has high work efficiency.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tuned mass damper comprising a rectangular base plate (1), characterized in that: A first rectangular groove (2) is provided on the top of the base plate (1), a viscous damper (3) is installed on the top of the base plate (1), and a supporting steel plate (4) is installed on the top of the viscous damper (3).

2. A tuned mass damper according to claim 1, characterized in that: A first limiting groove (5) is provided in the first rectangular groove (2), a receiving groove (6) is provided in the first rectangular groove (2), and a rectangular opening (7) is provided on the supporting steel plate (4).

3. A tuned mass damper according to claim 2, characterized in that: A first sliding plate (8) is slidably connected in the first rectangular groove (2), a handle is fixedly connected to one side of the first sliding plate (8), first limiting plates (9) are fixedly connected to both sides of the first sliding plate (8), the first limiting plates (9) are slidably connected to the first limiting groove (5), a return spring (10) is fixedly connected to one side of the first sliding plate (8), and one end of the return spring (10) is fixedly connected to the accommodating groove (6).

4. The tuned mass damper according to claim 1, wherein: The top of the first sliding plate (8) is fixedly connected to a lower sleeve (11), the top of the first sliding plate (8) is installed with a spring guide rod (12), the top of the first sliding plate (8) is installed with a shock-absorbing spring (13), and the spring guide rod (12) and the shock-absorbing spring (13) are both located in the lower sleeve (11).

5. The tuned mass damper according to claim 1, wherein: A mass block (14) is provided at the bottom of the supporting steel plate (4), second rectangular grooves (15) are provided at the bottoms of both sides of the supporting steel plate (4), second limiting grooves (16) are provided on both sides of the second rectangular groove (15), a second sliding plate (17) is slidably connected in the second rectangular groove (15), second limiting plates (18) are fixedly connected on both sides of the second sliding plate (17), and the second limiting plates (18) are slidably connected to the second limiting grooves (16).

6. The tuned mass damper according to claim 5, characterized in that: The bottom of the second limit plate (18) is fixedly connected to an upper sleeve, the tops of the spring guide rod (12) and the shock-absorbing spring (13) are both installed on the bottom of the second sliding plate (17), the spring guide rod (12) and the shock-absorbing spring (13) are both located in the upper sleeve, the spring guide rod (12) is located in the rectangular opening (7), and threaded holes (19) are provided on the support steel plate (4) and the second sliding plate (17), and the threaded holes (19) are internally threaded with fixing bolts (20).

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