A particle damper with adjustable filling rate

Abstract

The present invention relates to a particle damper with an adjustable filling rate, comprising a main damper cavity and a secondary damper cavity connected to the main damper cavity. The main damper cavity is filled with damping particles; the secondary damper cavity is connected to the main damper cavity via an upper connecting pipe and a lower connecting pipe; a spiral tube that can move up and down is provided in the secondary damper cavity; a telescopic baffle is provided at the particle outlet of the spiral tube; when the spiral tube moves to the top, the telescopic baffle automatically extends and seals the entrance between the lower connecting pipe and the secondary damper cavity. Compared with the prior art, the particle damper of the present invention can adjust the particle damper's filling rate, improves the damper's vibration reduction level in the vertical direction, and improves its robustness to different vibration excitations, thus having better practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of dampers, and in particular to a particle damper with adjustable filling rate. Background Art

[0002] Vibration control is crucial for design applications in mechanical and structural engineering, and particle damping technology is an effective vibration control method. Particle dampers typically replace the mass of an impact damper with multiple small particles of equal mass. They dissipate energy through frictional collisions between particles and the impact energy between particles and the cavity. Particle damping technology combines the advantages of impact and friction dampers, offering a simple structure, low manufacturing costs, and insensitivity to temperature fluctuations.

[0003] However, particle damping technology also has some drawbacks. Traditional particle damping technology uses a passive control method without external sources. When the structure is stimulated, the particles begin to move freely and collide with each other. Furthermore, when the excitation is weak, the collision amplitude between particles is small, making it difficult to fully activate all particles, resulting in low collision efficiency. This limitation prevents particle dampers from fully realizing their vibration reduction advantages in complex excitation environments such as wind and earthquakes.

[0004] Therefore, in order to solve the problems of low particle collision efficiency, single energy dissipation and time lag in the above-mentioned particle damper, it is urgent to develop a new type of particle damper. Summary of the Invention

[0005] The purpose of the present invention is to provide a particle damper with adjustable filling rate in order to overcome the problems of the prior art such as difficulty in regulating particle filling rate, low particle collision efficiency and single energy dissipation.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A particle damper with an adjustable filling rate comprises a main damper cavity and a secondary damper cavity connected to the main damper cavity, wherein the main damper cavity is filled with damping particles; the secondary damper cavity is connected to the main damper cavity through an upper connecting pipe and a lower connecting pipe;

[0008] A spiral tube that can move up and down is provided in the auxiliary damper cavity; the upper end of the spiral tube is a particle inlet that can be connected to the lower connecting tube, and the lower end of the spiral tube is a particle outlet that can be connected to the upper connecting tube; when the spiral tube is located at the bottom of the auxiliary damper cavity, the damping particles in the main damper cavity can flow into the spiral tube through the particle inlet; when the spiral tube is located at the top of the auxiliary damper cavity, the damping particles in the spiral tube can flow into the main damper cavity through the particle outlet;

[0009] A telescopic baffle is provided at the particle outlet of the spiral tube; the telescopic baffle includes a fixed plate connected to and passing through the particle outlet and a telescopic plate movably connected to the fixed plate; when the spiral tube moves to the top, the telescopic baffle automatically extends and the telescopic plate can block the entrance of the lower connecting pipe and the auxiliary damper cavity.

[0010] Furthermore, auxiliary damper cavities are provided on both sides of the main damper cavity, and the two auxiliary damper cavities are symmetrically arranged.

[0011] Furthermore, a buffer layer is provided on the inner wall of the main damper cavity.

[0012] Furthermore, the damping particles are spherical particles with a diameter of 5-10 mm, and the inner diameters of the upper connecting tube, the lower connecting tube and the spiral tube are all larger than the diameter of the damping particles and smaller than twice the diameter of the damping particles.

[0013] Furthermore, the axes of the upper connecting pipe and the lower connecting pipe are in the same plane.

[0014] Furthermore, the horizontal height of the connection between the upper connecting pipe and the auxiliary damper cavity is higher than the horizontal height of the connection between the upper connecting pipe and the main damper cavity; the horizontal height of the connection between the lower connecting pipe and the auxiliary damper cavity is lower than the horizontal height of the connection between the lower connecting pipe and the main damper cavity.

[0015] Furthermore, an electromagnetic component for controlling the upward and downward movement of the spiral tube is provided in the auxiliary damper cavity.

[0016] Furthermore, the electromagnetic assembly includes an upper electromagnet arranged at the top of the auxiliary damper cavity, a lower electromagnet arranged at the bottom of the auxiliary damper cavity, and a cylindrical magnet connected to the spiral tube.

[0017] Furthermore, the upper electromagnet and the lower electromagnet are non-magnetic in the non-energized state. When energized, the upper electromagnet has opposite magnetism to the cylindrical magnet, and the lower electromagnet has the same magnetism as the cylindrical magnet.

[0018] Furthermore, the helical tube is helically wound on the cylindrical magnet.

[0019] Furthermore, a buffer pad is provided on the surface of the upper electromagnet and the lower electromagnet that contacts the cylindrical magnet.

[0020] Furthermore, the retractable plate includes multiple levels of blocking pieces with decreasing widths, and adjacent blocking pieces can slide relative to each other under the action of limiting without separating from each other.

[0021] Furthermore, during the ascending process of the spiral tube, the retractable plate is gradually expanded until it can block the entrance of the lower connecting tube and the auxiliary damper cavity.

[0022] Furthermore, the maximum extension length of the telescopic baffle is greater than the distance between the upper connecting pipe and the lower connecting pipe.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The particle damper of the present invention is based on the traditional particle damper. By adding a secondary damper cavity and a spiral tube that can move up and down, the particle damper dissipates energy through the collision between particles in the main damper cavity and between particles and the inner wall. The particle damper can effectively control the number of damping particles in the main damper cavity and thus change the filling rate of the particle damper, thereby improving the vibration reduction level of the particle damper in the vertical direction and the robustness when facing different vibration excitations.

[0025] (2) By controlling the filling rate of the damping particles in the main damper cavity, the present invention can exhibit better fluidity when the excitation effect is small and has greater energy dissipation performance when the excitation effect is large, effectively solving the problems of low particle collision efficiency, single energy dissipation and time lag, thereby significantly improving the robustness and applicability of the particle damper.

[0026] (3) The particle damper of the present invention does not require external energy input when there is no excitation or the excitation is small. It can achieve vibration reduction only by the free vibration of the spiral tube and particles, which greatly saves electricity and responds to the design principle of low carbon and energy saving.

[0027] (4) The particle damper of the present invention can intelligently adjust the position of the spiral tube according to demand and thus change the filling rate of the device, thereby reducing the impact of the device's time lag.

[0028] (5) Compared with traditional particle dampers, the present invention has the characteristics of wide applicability and good vibration reduction performance. It can meet the actual application needs in the field of civil engineering and construction, and can be used in various types of building structures, with excellent application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the particle damper of the present invention in the initial state.

[0030] Figure 2 It is a structural schematic diagram of the spiral tube of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the spiral tube and the telescopic baffle of the present invention.

[0032] Figure 4 It is a structural schematic diagram of the telescopic baffle of the present invention when it is fully extended.

[0033] Figure 5 This is a schematic structural diagram of the telescopic baffle of the present invention when it is fully compressed.

[0034] Figure 6 This is a schematic structural diagram of the particle damper of the present invention when it moves upward.

[0035] Figure 7 This is a schematic structural diagram of the particle damper of the present invention when it is located at the top.

[0036] Description of the marks in the figure:

[0037] 1-main damper cavity, 11-buffer layer;

[0038] 2-damper cavity;

[0039] 3-damping particles;

[0040] 4-upper connecting pipe;

[0041] 5- lower connecting pipe;

[0042] 6- spiral tube, 61- particle inlet, 62- particle outlet;

[0043] 7- telescopic baffle, 71- fixed plate, 72- telescopic plate;

[0044] 8-electromagnetic assembly, 81-upper electromagnet, 82-lower electromagnet, 83-cylindrical magnet, 84-buffer pad. DETAILED DESCRIPTION

[0045] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0046] In the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0048] Example 1:

[0049] A particle damper with adjustable filling ratio, such as Figure 1 As shown, it includes a main damper cavity 1 and a secondary damper cavity 2 connected to the main damper cavity 1. The main damper cavity 1 is filled with damping particles 3, and the secondary damper cavity 2 is connected to the main damper cavity 1 through an upper connecting pipe 4 and a lower connecting pipe 5.

[0050] In this embodiment, a spiral tube 6 is installed within the secondary damper cavity 2, which can move up and down. The upper end of the spiral tube 6 is a particle inlet 61 that communicates with the lower connecting tube 5, and the lower end of the spiral tube 6 is a particle outlet 62 that communicates with the upper connecting tube 4. When the spiral tube 6 is located at the bottom of the secondary damper cavity 2, the damping particles 3 within the primary damper cavity 1 can flow into the spiral tube 6 through the particle inlet 61. When the spiral tube 6 is located at the top of the secondary damper cavity 2, the damping particles 3 within the spiral tube 6 can flow into the primary damper cavity 1 through the particle outlet 62.

[0051] In this embodiment, a retractable baffle 7 is provided at the particle outlet 62 of the spiral tube 6. The retractable baffle 7 comprises a fixed plate 71 connected to and extending through the particle outlet 62, and a retractable plate 72 movably connected to the fixed plate 71. When the spiral tube 6 reaches the top, the retractable baffle 7 automatically extends, and the retractable plate 72 seals the entrance between the lower connecting pipe 5 and the auxiliary damper cavity 2.

[0052] The particle damper of this embodiment is equipped with a spiral tube 6 that can move up and down within the secondary damper cavity 2. When the spiral tube 6 is at the bottom, the damping particles 3 in the primary damper cavity 1 can flow into the spiral tube 6; when the spiral tube 6 is at the top, the damping particles 3 in the spiral tube 6 can flow back into the primary damper cavity 1. By controlling the position of the spiral tube 6, the amount of damping particles 3 in the primary damper cavity 1 can be effectively controlled, improving the particle damper's vertical vibration reduction level and robustness to different vibration excitations, and solving the problems of low particle collision efficiency and single energy dissipation.

[0053] Example 2:

[0054] A particle damper with an adjustable filling rate comprises a main damper cavity 1 and a secondary damper cavity 2 connected to the main damper cavity 1. The main damper cavity 1 is filled with damping particles 3, and the secondary damper cavity 2 is connected to the main damper cavity 1 through an upper connecting pipe 4 and a lower connecting pipe 5.

[0055] The difference from Example 1 is that, in order to improve the overall stability of the particle damper of this embodiment, auxiliary damper cavities 2 are provided on both sides of the main damper cavity 1, the two auxiliary damper cavities 2 are symmetrically arranged, and a spiral tube 6 that can move up and down is provided in the auxiliary damper cavity 2.

[0056] The inner wall of the main damper cavity 1 of this embodiment is provided with a buffer layer 11 to reduce the impact of collisions between the damping particles 3 and the inner wall of the main damper cavity 1 on the device's service life. The damping particles 3 used in this embodiment are spherical particles with a diameter of 5-10 mm. The inner diameters of the upper connecting tube 4, lower connecting tube 5, and spiral tube 6 are all larger than the diameter of the damping particles 3 and less than twice the diameter of the damping particles 3.

[0057] Furthermore, the axes of the upper and lower connecting tubes 4, 5 of this embodiment are coplanar, and the upper connecting tube 4 is located at a higher level at its connection with the secondary damper cavity 2 than at its connection with the primary damper cavity 1. The lower connecting tube 5 is located at a lower level at its connection with the secondary damper cavity 2 than at its connection with the primary damper cavity 1. The tilted upper and lower connecting tubes 4, 5 ensure that the damping particles 3 can be transferred between the spiral tube 6 and the primary damper cavity 1 as needed.

[0058] Example 3:

[0059] A particle damper with an adjustable filling rate comprises a main damper cavity 1 and a secondary damper cavity 2 connected to the main damper cavity 1. The main damper cavity 1 is filled with damping particles 3, and the secondary damper cavity 2 is connected to the main damper cavity 1 through an upper connecting pipe 4 and a lower connecting pipe 5.

[0060] In this embodiment, a spiral tube 6 is provided in the auxiliary damper cavity 2, which can move up and down. Figure 2-3 As shown, the upper end of the spiral tube 6 is a particle inlet 61 that can communicate with the lower connecting tube 5, and the lower end of the spiral tube 6 is a particle outlet 62 that can communicate with the upper connecting tube 4. When the spiral tube 6 is located at the bottom of the secondary damper cavity 2, the damping particles 3 in the primary damper cavity 1 can flow into the spiral tube 6 through the particle inlet 61; when the spiral tube 6 is located at the top of the secondary damper cavity 2, the damping particles 3 in the spiral tube 6 can flow into the primary damper cavity 1 through the particle outlet 62.

[0061] The difference from Example 1 is that, in order to achieve the up and down movement of the spiral tube 6, an electromagnetic assembly 8 for controlling the up and down movement of the spiral tube 6 is provided in the auxiliary damper cavity 2 of this embodiment. The electromagnetic assembly 8 includes an upper electromagnet 81 provided at the top of the auxiliary damper cavity 2, a lower electromagnet 82 provided at the bottom of the auxiliary damper cavity 2, and a cylindrical magnet 83 connected to the spiral tube 6. The spiral tube 6 is spirally wound on the cylindrical magnet 83 and fixedly connected to the cylindrical magnet 83. The upper electromagnet 81 and the lower electromagnet 82 are both non-magnetic when not energized. When energized, the upper electromagnet 81 has opposite magnetic properties to the cylindrical magnet 83, while the lower electromagnet 82 has the same magnetic properties as the cylindrical magnet 83 when energized. In order to reduce the loss of material of the spiral tube 6 caused by collisions during the up and down movement of the spiral tube 6, a buffer pad 84 is provided on the side of the upper electromagnet 81 and the lower electromagnet 82 that contacts the cylindrical magnet 83.

[0062] When the structure is unexcited and remains stationary, the device is in its initial state, with both the upper electromagnet 81 and the lower electromagnet 82 de-energized. When the structure is excited, and the excitation is significant, the upper and lower electromagnets 81, 82 in this example are energized to generate magnetism. The upper electromagnet 81 and the cylindrical magnet 83 have opposite magnetic properties, while the lower electromagnet 82 and the cylindrical magnet 83 have the same magnetic properties. Under the influence of this magnetic force, the spiral tube 6 rises and can be fixed below the upper electromagnet 81.

[0063] Example 4:

[0064] A particle damper with an adjustable filling rate comprises a main damper cavity 1 and a secondary damper cavity 2 connected to the main damper cavity 1. The main damper cavity 1 is filled with damping particles 3, and the secondary damper cavity 2 is connected to the main damper cavity 1 through an upper connecting pipe 4 and a lower connecting pipe 5.

[0065] The difference from Example 1 is that Figure 4-5 As shown, the retractable plate 72 of this embodiment comprises multiple levels of baffles with decreasing widths. Adjacent baffles can slide relative to each other under restraint without disengaging. As the spiral tube 6 ascends, the retractable plate 72 gradually expands. The maximum extension length of the retractable baffle 7 is greater than the distance between the upper connecting tube 4 and the lower connecting tube 5. Therefore, when fully extended, the retractable plate 72 can block the lower connecting tube 5 from the entrance of the secondary damper cavity 2, preventing the damping particles 3 from falling into the secondary damper cavity 2.

[0066] Example 5:

[0067] This embodiment provides a particle damper with an adjustable filling rate, comprising a primary damper cavity 1, a secondary damper cavity 2, damping particles 3, an upper connecting pipe 4, and a lower connecting pipe 5. The primary damper cavity 1 is filled with a large amount of damping particles 3, while the secondary damper cavity 2 is equipped with a spiral tube 6, an upper electromagnet 81, a lower electromagnet 82, and a telescopic baffle 7. The primary damper cavity 1 and the secondary damper cavity 2 are connected by the upper connecting pipe 4 and the lower connecting pipe 5.

[0068] In this embodiment, a secondary damper cavity 2 is symmetrically distributed on both sides of the main damper cavity 1 to ensure the overall stability of the particle damper of the present invention during use. The main damper cavity 1 and each secondary damper cavity 2 are connected by an upper connecting pipe 4 and a lower connecting pipe 5. The upper connecting pipe 4 and the lower connecting pipe 5 are in the same plane and have a certain inclination angle to ensure that the damping particles 3 can be transferred according to demand. The upper connecting pipe 4 is used to control the damping particles 3 to flow from the spiral tube 6 in the secondary damper cavity 2 into the main damper cavity 1, and the lower connecting pipe 5 is used to control the damping particles 3 to flow from the main damper cavity 1 into the spiral tube 6 in the secondary damper cavity 2.

[0069] The spiral tube 6 is free to move up and down within the secondary damper cavity 2. A particle inlet 61 and a particle outlet 62 are respectively defined at the upper and lower ends of the spiral tube 6 for the entry and exit of the damping particles 3. The spiral structure maximizes the storage space for the damping particles 3. A retractable baffle 7 is provided at the particle outlet 62 to prevent the damping particles 3 from accidentally flowing into the secondary damper cavity 2.

[0070] Specifically, a cylindrical magnet 83 is installed in the middle of the spiral tube 6. The upper electromagnet 81 and the lower electromagnet 82 are respectively located at the top and bottom of each auxiliary damper cavity 2. In the unpowered state, the upper electromagnet 81 and the lower electromagnet 82 are not magnetic; in the powered state, the upper electromagnet 81 and the lower electromagnet 82 can generate magnetism as needed to control the position of the spiral tube 6. A telescopic baffle 7 is provided below the particle outlet 62 of the spiral tube 6. When the spiral tube 6 moves from the bottom to the top of the auxiliary damper cavity 2, the telescopic baffle 7 can automatically extend to block the lower side hole of the spiral tube 6; when the spiral tube 6 moves from the top to the bottom of the auxiliary damper cavity 2, the telescopic baffle 7 can automatically retract.

[0071] Specifically, the inner wall of the primary damper cavity 1 is coated with a buffer layer 11, which reduces the impact of collisions between the damping particles 3 and the inner wall of the primary damper cavity 1 on the device's service life. A buffer pad 84 is installed below the upper electromagnet 81 and above the lower electromagnet 82 to reduce material loss caused by collisions during the upward and downward movement of the spiral tube 6. In this embodiment, the buffer layer 11 and buffer pad 84 are typically made of one or more of rubber, plastic, or foam.

[0072] Specifically, damping particles 3 are made of spherical granular damping material with a diameter of 5-10 mm. Both the damping particles 3 and the main damper cavity 1 are made of steel. The diameters of the upper connecting tube 4, lower connecting tube 5, and spiral tube 6 are slightly larger than the diameter of the damping particles 3, but less than twice the diameter of the damping particles 3.

[0073] The working principle of the particle damper of this damper is as follows:

[0074] When the building structure is unexcited and remains stationary, the particle damper is in its initial state, with the upper and lower electromagnets 81 and 82 de-energized. Coil 6 is positioned above lower electromagnet 82 within the secondary damper cavity 2. Its upper opening aligns with the lower connecting tube 5, and the retractable baffle 7 at its base is fully retracted. Damping particles 3 within the primary damper cavity 1 flow through the lower connecting tube 5 into coil 6 until it is completely filled. At this point, the damping particles 3 within the primary damper cavity 1 are relatively few, resulting in a low particle filling rate and good fluidity.

[0075] like Figure 6 As shown, when the building structure is excited but the excitation is low, the upper electromagnet 81 and lower electromagnet 82 in this example are in an unenergized state, the spiral tube 6 freely vibrates up and down within the secondary damper cavity 2, and the spiral tube 6 and lower connecting tube 5 are filled with damping particles 3. As the spiral tube 6 rises, the telescopic baffle 7 begins to extend and prevents the damping particles 3 in the lower connecting tube 5 from flowing into the secondary damper cavity 2. At this time, the particle filling rate of the device is low, and the damping particles 3 in the primary damper cavity 1 and the spiral tube 6 simultaneously vibrate freely to dissipate energy, exhibiting good fluidity.

[0076] like Figure 7 As shown, when the building structure is excited and the excitation exceeds a predetermined threshold, the upper electromagnet 81 and the lower electromagnet 82 in this example are energized to generate magnetism. The upper electromagnet 81 has opposite magnetic properties to the cylindrical magnet 83, and the lower electromagnet 82 has the same magnetic properties as the cylindrical magnet 83. Under the action of the magnetic force, the spiral tube 6 rises and can be fixed to the bottom of the upper electromagnet 81. The lower hole of the spiral tube 6 is aligned with the upper connecting tube 4. The damping particles 3 in the spiral tube 6 flow into the main damper cavity 1 through the upper connecting tube 4. The telescopic baffle 7 at the bottom of the spiral tube 6 is fully extended to resist the lower connecting tube 5. At this time, the particle filling rate of the device is relatively large, and the damping particles 3 in the main damper cavity 1 vibrate freely to dissipate energy. The collision efficiency of the damping particles 3 increases, and the vibration reduction performance of the entire particle damper is improved. When the excitation of the building structure gradually decreases to below the threshold, the upper electromagnet 81 and the lower electromagnet 82 are de-energized, and the spiral tube 6 vibrates freely up and down in the auxiliary damper cavity 2, and the device returns to Figure 6 The status shown.

[0077] The above description of the embodiments is intended to facilitate understanding and use of the invention by those skilled in the art. It will be apparent that those skilled in the art can readily make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the present invention is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention, without departing from the scope of the present invention, should be within the scope of protection of the present invention.

Claims

1. A particle damper with adjustable filling rate, characterized in that: The invention comprises a main damper cavity (1) and a secondary damper cavity (2) communicating with the main damper cavity (1), wherein the main damper cavity (1) is filled with damping particles (3); the secondary damper cavity (2) is communicated with the main damper cavity (1) via an upper communicating pipe (4) and a lower communicating pipe (5); A spiral tube (6) capable of moving up and down is provided in the auxiliary damper cavity (2); the upper end of the spiral tube (6) is a particle inlet (61) capable of communicating with the lower connecting tube (5), and the lower end of the spiral tube (6) is a particle outlet (62) capable of communicating with the upper connecting tube (4); when the spiral tube (6) is located at the bottom of the auxiliary damper cavity (2), the damping particles (3) in the main damper cavity (1) can flow into the spiral tube (6) through the particle inlet (61); when the spiral tube (6) is located at the top of the auxiliary damper cavity (2), the damping particles (3) in the spiral tube (6) can flow into the main damper cavity (1) through the particle outlet (62); the inner diameters of the upper connecting tube (4), the lower connecting tube (5) and the spiral tube (6) are all larger than the diameter of the damping particles (3) and smaller than twice the diameter of the damping particles (3); A telescopic baffle (7) is provided at the particle outlet (62) of the spiral tube (6); the telescopic baffle (7) comprises a fixed plate (71) connected to and penetrating the particle outlet (62) and a telescopic plate (72) movably connected to the fixed plate (71); when the spiral tube (6) moves to the top, the telescopic baffle (7) automatically extends and the telescopic plate (72) can block the entrance of the lower connecting tube (5) and the auxiliary damper cavity (2); An electromagnetic assembly (8) for controlling the upward and downward movement of the spiral tube (6) is provided in the auxiliary damper cavity (2); the electromagnetic assembly (8) comprises an upper electromagnet (81) provided at the top of the auxiliary damper cavity (2), a lower electromagnet (82) provided at the bottom of the auxiliary damper cavity (2), and a cylindrical magnet (83) connected to the spiral tube (6).

2. The particle damper with adjustable filling rate according to claim 1, characterized in that: Auxiliary damper cavities (2) are provided on both sides of the main damper cavity (1), and the two auxiliary damper cavities (2) are symmetrically arranged; The inner wall of the main damper cavity (1) is provided with a buffer layer (11).

3. The particle damper with adjustable filling rate according to claim 1, characterized in that: The damping particles (3) are spherical particles with a diameter of 5-10 mm.

4. The particle damper with adjustable filling rate according to claim 1, characterized in that: The axes of the upper connecting pipe (4) and the lower connecting pipe (5) are in the same plane; The horizontal height of the connection between the upper connecting pipe (4) and the auxiliary damper cavity (2) is higher than the horizontal height of the connection between the upper connecting pipe (4) and the main damper cavity (1); the horizontal height of the connection between the lower connecting pipe (5) and the auxiliary damper cavity (2) is lower than the horizontal height of the connection between the lower connecting pipe (5) and the main damper cavity (1).

5. The particle damper with adjustable filling rate according to claim 1, characterized in that: The upper electromagnet (81) and the lower electromagnet (82) are non-magnetic in an unpowered state. When powered on, the upper electromagnet (81) has opposite magnetism to the cylindrical magnet (83), and the lower electromagnet (82) has the same magnetism as the cylindrical magnet (83).

6. The particle damper with adjustable filling rate according to claim 1, characterized in that: The spiral tube (6) is spirally wound on the cylindrical magnet (83).

7. The particle damper with adjustable filling rate according to claim 1, characterized in that: A buffer pad (84) is provided on each of the upper electromagnet (81) and the lower electromagnet (82) on the side in contact with the cylindrical magnet (83).

8. The particle damper with adjustable filling rate according to claim 1, characterized in that: The retractable plate (72) comprises multiple levels of baffles with decreasing widths, and adjacent baffles can slide relative to each other under the action of limiting without separating from each other; During the ascending process of the spiral tube (6), the retractable plate (72) is gradually expanded until it can block the entrance of the lower connecting tube (5) and the auxiliary damper cavity (2).

9. The particle damper with adjustable filling rate according to claim 1, characterized in that: The maximum extension length of the telescopic baffle (7) is greater than the distance between the upper connecting pipe (4) and the lower connecting pipe (5).

Images