Three-dimensional energy dissipation non-linear energy sink

Abstract

The application relates to a three-dimensional energy dissipation and vibration reduction nonlinear energy sink, which comprises a bottom plate, an upper frame arranged above the bottom plate, and a stand column connecting the bottom plate and the upper frame; a slide is arranged between the bottom plate and the upper frame, two ends of the slide are connected with the side surfaces of the stand column, a spring is arranged between the slide and the upper frame, the upper end of the spring is connected with the upper frame, the lower end of the spring penetrates through the slide and is connected with a sliding collision device, the upper end of the sliding collision device is in contact with the slide, and the lower end of the sliding collision device is in contact with the bottom plate; when the structure vibrates, the application can effectively absorb and disperse energy in multiple directions, improves the working efficiency of energy dissipation and vibration reduction, and effectively expands the working frequency range of energy dissipation and vibration reduction.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction technology, specifically to a three-dimensional energy-dissipating vibration reduction nonlinear energy trap. Technical Background

[0002] Vibration problems are common in civil engineering structures and mechanical equipment. Vibration is caused by external forces such as earthquakes, wind, and equipment operation. Excessive vibration can affect the normal use of civil engineering structures and mechanical equipment, and may even lead to their destruction. In order to reduce vibration, dampers can be used to reduce vibration and dissipate energy. Traditional vibration reduction devices have been widely used to deal with unidirectional vibration, but they have limitations in dealing with multidirectional vibration. Therefore, designing a three-dimensional vibration reduction device that can reduce loads in all directions at the same time has great practical value. Summary of the Invention

[0003] In view of the problems existing in the prior art, the purpose of this invention is to provide a three-dimensional energy-dissipating and vibration-damping nonlinear energy trap that can effectively absorb and disperse energy from multiple directions when the structure vibrates, thereby reducing the vibration of the structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A three-dimensional energy-dissipating and vibration-damping nonlinear energy sink includes a base plate, an upper frame above the base plate, and the base plate and the upper frame connected by a column. A slide rail is provided between the base plate and the upper frame, with both ends of the slide rail connected to the side of the column. A spring is provided between the slide rail and the upper frame, with the upper end of the spring connected to the upper frame and the lower end passing through the slide rail and connected to a sliding collision device. The upper end of the sliding collision device contacts the slide rail, and the lower end contacts the base plate.

[0006] Furthermore, piezoelectric ceramics are provided at both ends of the slide, and the piezoelectric ceramics are connected to the resistor sheet.

[0007] Furthermore, the sliding collision device contains multiple circular particles.

[0008] Furthermore, a shell is provided at the lower end of the base plate, the base plate seals the upper end of the shell, and the inner cavity of the shell is filled with a viscous liquid.

[0009] Furthermore, an inner box is suspended in the upper part of the inner cavity of the shell by a movable rod. The lower part of the inner box is located in a viscous liquid. Sleeves are provided on both sides of the outer side of the inner box. One end of the movable rod is movably connected to the side wall of the shell, and the other end is inserted into the sleeve.

[0010] Furthermore, a permanent magnet is provided on the side wall of the housing, and a magnetorheological fluid is placed inside the sleeve.

[0011] Furthermore, the inner cavity of the inner box is provided with an arc-shaped track and a metal disk. The two ends of the arc-shaped track are movably connected to the side wall of the inner box. The center of the metal disk is provided with a slider that matches the arc-shaped track, and the slider is located inside the arc-shaped track.

[0012] Furthermore, the bottom of the inner cavity of the inner box is provided with several closed independent areas, and multiple round particles are placed in each area.

[0013] Furthermore, the inner wall of the independent region is provided with piezoelectric ceramic, which is connected to the resistive element.

[0014] Compared with existing energy-consuming vibration reduction devices, the advantages of this invention are:

[0015] (1) This invention introduces magnetorheological fluid, viscous fluid, piezoelectric ceramic, particles, eddy current and cubic stiffness spring, forming a synergistic effect of magnetorheological damping, eddy current energy dissipation, particle damping, tuned liquid damper and nonlinear energy hydrazine, which shows a better energy dissipation effect.

[0016] (2) The present invention has a targeted energy transfer mechanism in the nonlinear energy trap formed by the spring and the sliding collision device and the nonlinear energy trap formed by the movable rod and the inner box, which improves the working efficiency of energy consumption and vibration reduction, and at the same time effectively expands the working frequency range of energy consumption and vibration reduction.

[0017] (3) The present invention has a wide range of applications and is applicable to energy dissipation and vibration reduction in any direction in three-dimensional space; Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a front sectional view of the present invention;

[0020] Figure 3 This is a top sectional view of the housing of the present invention;

[0021] Reference numerals: 1 base plate, 2 upper frame, 3 column, 4 slide rail, 5 spring, 6 sliding collision device, 7 piezoelectric ceramic, 8 round particle, 9 shell, 10 movable rod, 11 inner box, 12 sleeve, 13 permanent magnet, 14 arc track, 15 metal disc. Specific Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] refer to Figure 1 and Figure 2 According to an embodiment of the present invention, a three-dimensional energy-dissipating and vibration-damping nonlinear energy trap includes a base plate 1, an upper frame 2 disposed above the base plate 1, and the base plate 1 and the upper frame 2 connected by a column 3; a slide rail 4 is disposed between the base plate 1 and the upper frame 2, the two ends of the slide rail 4 are respectively connected to the side of the column 3, a spring 5 is disposed between the slide rail 4 and the upper frame 2, the upper end of the spring 5 is connected to the upper frame 2, and the lower end passes through the slide rail 4 and is connected to a sliding collision device 6, the upper end of the sliding collision device 6 contacts the slide rail 4, and the lower end contacts the base plate 1.

[0024] When the above embodiment is subjected to vibration in any direction in three-dimensional space, the vibration energy transmitted from the outside causes the sliding collision device 6 at the lower end of the spring 5 to vibrate; when vibration occurs, the spring 5 moves along the slide 4 and forms a certain angle with the vertical direction to form vertical cubic stiffness, thereby the spring 5 and the sliding collision device 6 form nonlinear energy, which has the effect of vibration reduction and energy dissipation.

[0025] refer to Figure 1 and Figure 2 Furthermore, in the above embodiments, piezoelectric ceramics 7 are provided at both ends of the slide 4. The piezoelectric ceramics 7 are connected to the resistor sheet. If the sliding collision device 6 collides with the piezoelectric ceramics 7 at both ends of the slide 4, on the one hand, the collision generates energy consumption, and on the other hand, the collision causes the piezoelectric ceramics 7 to generate electrical energy. The resistor sheet connected to the piezoelectric ceramics 7 converts the electrical energy into heat energy and dissipates it.

[0026] refer to Figure 1 and Figure 2 Furthermore, in the above embodiments, the sliding collision device 6 contains a plurality of circular particles 8. When the sliding collision device 6 is vibrated, the particles 8 inside it collide and rub against each other and against the inner wall of the sliding collision device 6, consuming energy.

[0027] refer to Figures 1 to 3 Furthermore, in the above embodiments, a housing 9 is provided at the lower end of the base plate 1, and the base plate 1 seals the upper end of the housing 9. The inner cavity of the housing 9 is filled with viscous liquid. When subjected to external vibration, the housing 9 and the viscous liquid inside form a tuned liquid damper. The vibration energy of the housing 9 is transferred to the viscous liquid in the cavity, and the viscous liquid generates viscous damping energy dissipation.

[0028] refer to Figures 1 to 3 Furthermore, in the above embodiments, an inner box 11 is suspended in the upper part of the inner cavity of the housing 9 by a movable rod 10. The inner box 11 is made of metal, and the lower part of the inner box 11 is located in a viscous liquid. Sleeves 12 are provided on both sides of the outer side of the inner box 11. One end of the movable rod 10 is movably connected to the side wall of the housing 9, and the other end is inserted into the sleeve 12. When subjected to external vibration, the vibration energy of the housing 9 is simultaneously transmitted to the movable rod 10. The axis of the movable rod 10 can be at a certain angle to the horizontal plane to form a cubic stiffness in the horizontal direction, which, together with the inner box 11, constitutes a nonlinear energy trap, achieving the effect of vibration reduction and energy dissipation. At the same time, the three-dimensional movement of the inner box 11 also dissipates energy through the viscous liquid.

[0029] refer to Figure 2 and Figure 3 Furthermore, in the above embodiments, a permanent magnet 13 is provided on the side wall of the housing 9, and a magnetorheological fluid is placed inside the sleeve 12. The magnetic field generated by the permanent magnet 13 causes the magnetorheological fluid to generate magnetorheological damping and dissipate energy.

[0030] refer to Figure 2 and Figure 3 Furthermore, in the above embodiments, the inner cavity of the inner box 11 is provided with an arc-shaped track 14 and a metal disk 15. The two ends of the arc-shaped track 14 are movably connected to the side wall of the inner box 11. The center of the metal disk 15 is provided with a slider that matches the arc-shaped track 14. The slider is located inside the arc-shaped track. When subjected to external vibration, the inner box 11 vibrates, causing the metal disk 15 at the arc-shaped track 14 to move horizontally and vertically, thereby cutting the magnetic field lines generated by the permanent magnet 13, resulting in eddy current energy consumption.

[0031] refer to Figure 2 and Figure 3 Furthermore, in the above embodiments, the bottom of the inner cavity of the inner box 11 is provided with several closed independent areas, and multiple round particles 8 are placed in each area. Vibration of the inner box 11 will cause collisions and friction between the particles 8 at the bottom of the inner box and between the particles 8 and the inner wall of the inner box 11, resulting in energy consumption.

[0032] refer to Figure 2 and Figure 3 Furthermore, in the above embodiments, the inner wall of the independent region is provided with a piezoelectric ceramic 7, which is connected to a resistor. The collision between the circular particles 8 in the independent region and the piezoelectric ceramic 7 on its inner wall generates electrical energy, and the resistor connected to the piezoelectric ceramic 7 converts the electrical energy into heat energy for dissipation.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A three-dimensional energy-dissipating and vibration-damping nonlinear energy trap, characterized in that, Includes a base plate (1), an upper frame (2) is provided above the base plate (1), the base plate (1) and the upper frame (2) are connected by a column (3); a slide (4) is provided between the base plate (1) and the upper frame (2), the two ends of the slide (4) are respectively connected to the side of the column (3), a spring (5) is provided between the slide (4) and the upper frame (2), the upper end of the spring (5) is connected to the upper frame (2), and the lower end passes through the slide (4) and is connected to a sliding collision device (6), the upper end of the sliding collision device (6) contacts the slide (4), and the lower end contacts the base plate (1); The bottom plate (1) is provided with a shell (9) at its lower end. The bottom plate (1) seals the upper end of the shell (9). The inner cavity of the shell (9) is filled with a viscous liquid. The upper part of the inner cavity of the housing (9) is suspended by a movable rod (10) and the lower part of the inner box (11) is located in a viscous liquid. Sleeves (12) are provided on both sides of the outer side of the inner box (11). One end of the movable rod (10) is movably connected to the side wall of the housing (9), and the other end is inserted into the sleeve (12).

2. The three-dimensional energy-dissipating and vibration-damping nonlinear energy trap according to claim 1, characterized in that, The slide (4) is provided with piezoelectric ceramics (7) at both ends, and the piezoelectric ceramics (7) are connected to the resistor sheet.

3. The three-dimensional energy-dissipating and vibration-damping nonlinear energy trap according to claim 1, characterized in that, The sliding collision device (6) contains multiple round particles (8).

4. The three-dimensional energy-dissipating and vibration-damping nonlinear energy trap according to claim 1, characterized in that, The side wall of the housing (9) is provided with a permanent magnet (13), and the sleeve (12) contains a magnetorheological fluid.

5. The three-dimensional energy-dissipating and vibration-damping nonlinear energy trap according to claim 4, characterized in that, The inner cavity of the inner box (11) is provided with an arc-shaped track (14) and a metal disc (15). The two ends of the arc-shaped track (14) are movably connected to the side wall of the inner box (11). The center of the metal disc (15) is provided with a slider that matches the arc-shaped track (14). The slider is located inside the arc-shaped track (14).

6. The three-dimensional energy-dissipating and vibration-damping nonlinear energy trap according to claim 1, characterized in that, The bottom of the inner cavity of the inner box (11) is provided with several closed independent areas, and multiple round particles (8) are placed in each area.

7. The three-dimensional energy-dissipating and vibration-damping nonlinear energy trap according to claim 6, characterized in that, The inner wall of the independent area is provided with piezoelectric ceramic (7), which is connected to the resistor sheet.

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