Vibration damping device based on particle damping and metal rubber mixing

Abstract

The invention discloses a vibration damper based on particle damping and metal rubber mixing, and relates to the field of vibration absorbers. An existing shock absorber is limited in shock absorption effect and cannot be used in a more complex environment. The device comprises an elastic plate and a vibration cavity filled with metal rubber and damping particles, an insertion opening is formed in the side wall of the vibration cavity, the elastic plate is partially inserted into the vibration cavity from the insertion opening of the vibration cavity and is supported by the insertion opening of the vibration cavity, and the length, located in the vibration cavity, of the elastic plate is larger than the length, located outside the vibration cavity, of the elastic plate. When the end, located outside the vibration cavity, of the elastic plate is subjected to vibration force and swings up and down, the end, located in the vibration cavity, of the elastic plate swings reversely, and the metal rubber and the damping particles are stirred, so that the vibration amplitude of the metal rubber and the damping particles is increased. The vibration absorber is mainly used for absorbing vibration.

Description

Technical Field

[0001] The invention relates to the field of vibration absorbers, and in particular to a vibration reduction device based on a mixture of particle damping and metal rubber. Background Art

[0002] As an important mechanical component, the shock absorber is widely used in aerospace, automobile manufacturing, construction engineering and various mechanical equipment. Its main function is to absorb and dissipate vibration energy to reduce or eliminate the vibration and noise of the mechanical system during operation, thereby improving the stability and service life of the equipment. In the existing vibration reduction technology, particle damping and metal rubber shock absorbers each have unique advantages, so the two are often used in combination to achieve better vibration reduction effects and meet the vibration reduction requirements in various complex environments. For example, a metal-rubber composite particle damping vibration absorber disclosed in publication number CN117927592A is provided with a particle damping container with damping particles inside, the outside of the particle damping container is wrapped with a metal rubber interlayer, the metal rubber interlayer is sandwiched between the particle damping container and the outer shell, and a spring sheet is connected above the outer shell. Although the vibration absorber can improve the vibration absorption effect to a certain extent, the vibration absorption effect is still limited and cannot meet the use in more complex environments. Summary of the invention

[0003] In view of this, the present invention provides a vibration reduction device based on a mixture of particle damping and metal rubber, which can improve the vibration reduction effect and meet the use in more complex environments.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] 1. A vibration reduction device based on a mixture of particle damping and metal rubber, comprising an elastic plate and a vibration cavity filled with metal rubber and damping particles, a socket is provided at the side wall of the vibration cavity, the elastic plate is partially inserted into the vibration cavity from the socket of the vibration cavity and supported by the socket of the vibration cavity, the length of the elastic plate in the vibration cavity is longer than the length outside the vibration cavity, when one end of the elastic plate outside the vibration cavity is subjected to vibration force and swings up and down, the end of the elastic plate in the vibration cavity swings in the opposite direction and stirs the metal rubber and the damping particles to increase the vibration amplitude of the metal rubber and the damping particles.

[0006] 2. On the basis of technical solution 1, the vibration chamber is formed by a vibration-damping outer shell with an opening at one end and a vibration-damping inner shell with an opening at the other end, the vibration-damping outer shell and the vibration-damping inner shell can move relative to each other with a movable gap between them, a socket is opened on the side wall of the vibration-damping inner shell, one end of the elastic plate is connected to the inner wall of the vibration-damping outer shell, and the other end passes through the socket on the vibration-damping inner shell and extends to the interior of the vibration-damping inner shell.

[0007] 3. Based on Technical Solution 2, a rubber ring is provided in the movable gap between the vibration-damping inner shell and the vibration-damping outer shell to prevent external dust from entering the movable gap.

[0008] 4. Based on Technical Solution 2, a circle of isolation grooves is provided at the bottom end of the vibration-damping outer shell, the open end of the vibration-damping inner shell is inserted into the isolation grooves and the notch of the isolation grooves is sealed to prevent the damping particles in the vibration cavity from leaking into the active gap.

[0009] 5. Based on technical solution 4, a circle of isolation plates is provided at the bottom end of the vibration-damping shell, and the isolation plates and the inner side wall of the vibration-damping shell form an isolation groove.

[0010] 6. Based on technical solution 4, a limiting ridge is provided at the open end of the vibration-damping outer shell, and a limiting groove is provided at the outer wall of the vibration-damping inner shell. The limiting ridge is inserted into the limiting groove to limit the relative displacement between the vibration-damping outer shell and the vibration-damping inner shell.

[0011] 7. Based on technical solution 1, the damping particles are metal particles, rubber particles or polymer particles.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The design of the elastic plate in the present invention is similar to a "lever". The part of the elastic plate in the vibration-damping inner shell is longer than the part outside the vibration-damping inner shell. The inner wall of the socket of the vibration-damping inner shell is the lever fulcrum, and the vibration-damping outer shell is the "lever" force. When the vibration-damping outer shell transmits the vibration force and drives the outer end of the elastic plate to swing up and down, the inner end of the elastic plate swings in the opposite direction. The weak vibration of the outside world can make the elastic plate strongly stir the metal rubber and damping particles in the vibration-damping inner shell, causing violent movement of the metal rubber and the damping particles to generate a stronger damping force. The energy of the vibration is consumed in the violent friction between the metal rubber and the damping particles, achieving a better vibration reduction effect. At the same time, the vibration reduction device of the present invention is a mixture of particle damping and metal rubber, and the two are placed in the same space to enhance the damping performance.

[0014] 2. The present invention adopts two means to avoid the problem of "stuck" of the vibration-damping inner shell and the vibration-damping outer shell. One is to design a rubber ring seal in the movable gap between the vibration-damping inner shell and the vibration-damping outer shell; the other is to design an isolation groove between the open end of the vibration-damping inner shell and the bottom of the vibration-damping outer shell, and at the same time use the limiting ridges and the limiting grooves to limit the relative displacement of the vibration-damping inner shell and the vibration-damping outer shell to ensure the function of the isolation groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are incorporated as part of this application and are used to provide a further understanding of the present invention.

[0016] Figure 1The figure is a schematic diagram of the external structure of a vibration reduction device based on a mixture of particle damping and metal rubber according to the present invention.

[0017] Figure 2 The figure is a schematic diagram of the internal structure of a vibration reduction device based on a mixture of particle damping and metal rubber according to the present invention.

[0018] Figure 3 It is a schematic diagram of the structure of the vibration-damping inner shell.

[0019] Figure 4 It is a schematic diagram of the structure of the vibration-damping shell.

[0020] Figure 5 Schematic diagram of the cross section of the vibration-damping shell.

[0021] Explanation of the reference numerals: 1-elastic plate; 2-metal rubber; 3-damping particles; 4-vibration chamber; 41-vibration-damping outer shell; 411-isolation plate; 412-isolation groove; 413-limiting ridge; 42-vibration-damping inner shell; 421-isolation belt; 422-socket; 423-outer ridge; 424-limiting groove; 43-movable gap. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with specific embodiments.

[0023] Figure 1 and Figure 2 FIG. 4 shows a schematic structural diagram of a vibration reduction device based on a mixture of particle damping and metal rubber according to the present embodiment. Figure 1 and Figure 2 As shown, the vibration reduction device includes an elastic plate 1 and a vibration cavity 4 filled with metal rubber 2 and damping particles 3. A socket is provided at the side wall of the vibration cavity 4. The elastic plate 1 is partially inserted into the vibration cavity 4 from the socket and supported by the socket. The length of the elastic plate 1 in the vibration cavity 4 is longer than the length outside the vibration cavity 4. When the end of the elastic plate 1 outside the vibration cavity 4 is subjected to vibration force and swings up and down, the end of the elastic plate 1 in the vibration cavity 4 swings in the opposite direction and stirs the metal rubber 2 and the damping particles 3 with a larger amplitude to increase the vibration amplitude of the metal rubber 2 and the damping particles 3, thereby increasing the vibration reduction effect. Specifically, in combination with Figure 2The vibration chamber 4 is formed by buckling a vibration-damping outer shell 41 and a vibration-damping inner shell 42. Both the vibration-damping outer shell 41 and the vibration-damping inner shell 42 are shells with one end open. The opening of the vibration-damping outer shell 41 faces upward, and the opening of the vibration-damping inner shell 42 faces downward and is inserted into the vibration-damping outer shell 41. The outer diameter of the vibration-damping inner shell 42 is smaller than the inner diameter of the vibration-damping outer shell 41, so that the vibration-damping outer shell 41 and the vibration-damping inner shell 42 can move up and down relative to each other. An active gap 43 is formed between the outer wall of the vibration-damping inner shell 42 and the inner wall of the vibration-damping outer shell 41, so as to leave space for the elastic plate 1 to swing up and down. At least two sockets 422 are respectively opened along the longitudinal direction at the opposite side walls of the vibration-damping inner shell 42, and each socket 422 corresponds to an elastic plate 1. One end of the elastic plate 1 (hereinafter referred to as the outer end of the elastic plate 1) is connected to the inner wall of the vibration-damping outer shell 41, and the other end (hereinafter referred to as the inner end of the elastic plate 1) passes through the corresponding socket 422 on the vibration-damping inner shell 42 and extends to the interior of the vibration-damping inner shell 42. The vibration-damping inner shell 42 is filled with metal rubber 2 and damping particles 3, and the upper and lower surfaces of the elastic plate 1 are wrapped. When the vibration damping device vibrates, the vibration damping outer shell 41 and the vibration damping inner shell 42 slide relative to each other inside and outside, and the outer end of the elastic plate 1 moves together with the vibration damping outer shell 41. Since the elastic plate 1 is located at the socket 422 and supported by the inner wall of the socket 422, the inner end of the elastic plate 1 moves in the opposite direction. That is to say, the design of the elastic plate 1 in this embodiment is similar to a "lever", the inner wall of the socket 422 of the vibration damping inner shell 42 is the fulcrum of the lever, and the vibration damping outer shell 41 applies force to the "lever". When the vibration damping outer shell 41 transmits the vibration force and drives the outer end of the elastic plate 1 to move downward, the inner end of the elastic plate 1 moves upward. Conversely, when the vibration damping outer shell 41 drives the outer end of the elastic plate 1 to move upward, the inner end of the elastic plate 1 moves downward. Among them, the part of the elastic plate 1 in the vibration damping inner shell 42 is longer than the part outside the vibration damping inner shell 42, and the inner and outer length ratio of the elastic plate 1 can be adjusted as needed. With such a design, even when the upper and lower amplitude of the outer end of the elastic plate 1 is small, the upper and lower amplitude of the inner end of the elastic plate 1 can be caused to be large, that is, the weak vibration of the outside world can make the elastic plate 1 strongly stir the metal rubber 2 and the damping particles 3 in the vibration-damping inner shell 42, causing the metal rubber 2 and the damping particles 3 to move violently to generate a stronger damping force, and the vibration energy is consumed in the violent friction between the metal rubber 2 and the damping particles 3, achieving a better vibration reduction effect. At the same time, the vibration reduction device of this embodiment is a mixture of particle damping and metal rubber, and the two are placed in the same space to enhance the damping performance.

[0024] like Figure 3As shown, since the vibration-damping inner shell 42 and the vibration-damping outer shell 41 are movably connected and an active gap 43 is left between the two, when the vibration-damping device is in use, external dust can easily enter the active gap and cause the two to get stuck. In this embodiment, at least two isolation belts 421 are circumferentially arranged at the open end of the vibration-damping inner shell 42 and the end away from the opening. A rubber ring is embedded in each isolation belt 421. When the vibration-damping inner shell 42 and the vibration-damping outer shell 41 slide relative to each other inside and outside, the rubber ring always contacts and squeezes the inner side wall of the vibration-damping outer shell 41 to increase the sealing of the active gap 43, prevent external dust from entering the active gap 43 and the inside of the vibration cavity, causing the vibration-damping inner shell 42 and the vibration-damping outer shell 41 to be unable to move or affecting the smoothness of the movement.

[0025] like Figure 2 As shown, since both the vibration-damping inner shell 42 and the vibration-damping outer shell 41 are open shells, the damping particles 3 are easy to leak from the open end of the vibration-damping inner shell 42 to the movable gap 43 between the vibration-damping inner shell 42 and the vibration-damping outer shell 41 during vibration, causing the vibration-damping outer shell 41 and the vibration-damping inner shell 42 to get stuck. Figure 5 As shown, in this embodiment, a circle of isolation plates 411 are provided at the bottom end of the vibration-damping outer shell 41, and the isolation plates 411 and the inner side wall of the vibration-damping outer shell 41 form a circle of isolation grooves 412. The open end of the vibration-damping inner shell 42 is inserted into the isolation groove 412, and the notch of the isolation groove 412 is sealed by the isolation belt 421 at the open end, so that the vibration cavity 4 forms a sealed cavity. When the vibration-damping outer shell 41 and the vibration-damping inner shell 42 vibrate up and down, the isolation belt 421 at the open end of the vibration-damping inner shell 42 is always in the isolation groove 412, so as to prevent the damping particles 3 from leaking from the open end of the vibration-damping inner shell 42 to the active gap 43 between the vibration-damping inner shell 42 and the vibration-damping outer shell 41, thereby increasing the smoothness of the movement between the vibration-damping inner shell 42 and the vibration-damping outer shell 41.

[0026] like Figure 2 As shown, when the vibration amplitude of the vibration-damping inner shell 42 and the vibration-damping outer shell 41 is large, it is easy to cause the open end of the vibration-damping inner shell 42 to separate from the isolation groove 412, and the sealing effect cannot be achieved at this place. Figure 4 and Figure 5 As shown, in this embodiment, a limiting ridge 413 is provided at the open end of the vibration-damping housing 41. Figure 3As shown, the end of the vibration-damping inner shell 42 away from the opening is provided with a circle of outer ridges 423, and the outer ridges 423 can be made integrally with the vibration-damping inner shell 42. At the same time, the outer ridges 423 and the isolation belt 421 on the vibration-damping inner shell 42 away from the opening form a limiting groove 424, and the limiting ridges 413 are in the limiting grooves 424. The groove width of the limiting grooves 424 is the distance that the vibration-damping inner shell 42 and the vibration-damping outer shell 41 can slide relative to each other. When the vibration-damping inner shell 42 moves outward relative to the vibration-damping outer shell 41, the limiting ridges 413 abut against the vibration-damping inner shell 42. On the isolation belt 421 of the shell 42, the further movement of the vibration-damping inner shell 42 is limited. When the vibration-damping inner shell 42 moves inward relative to the vibration-damping outer shell 41, the outer ridge 423 limits the further movement of the vibration-damping inner shell 42. That is to say, in this embodiment, the cooperation between the limiting groove 424 and the limiting ridge 413 can limit the relative sliding distance between the vibration-damping outer shell 41 and the vibration-damping inner shell 42, thereby preventing the open end of the vibration-damping inner shell 42 from detaching from the isolation groove 412, and also preventing the damping particles 3 from leaking to the active gap 43.

[0027] It can be seen that the present embodiment avoids the problem of the vibration-damping inner shell 42 and the vibration-damping outer shell 41 being "stuck" by two means, thereby ensuring the performance of the vibration-damping device of the present embodiment and a long-term vibration-damping effect.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A vibration reduction device based on a mixture of particle damping and metal rubber, characterized in that: It includes an elastic plate and a vibration cavity filled with metal rubber and damping particles. A socket is provided on the side wall of the vibration cavity. The elastic plate is partially inserted into the vibration cavity from the socket of the vibration cavity and is supported by the socket of the vibration cavity. The length of the elastic plate in the vibration cavity is longer than the length outside the vibration cavity. When one end of the elastic plate outside the vibration cavity is subjected to vibration force and swings up and down, the end of the elastic plate in the vibration cavity swings in the opposite direction and stirs the metal rubber and the damping particles to increase the vibration amplitude of the metal rubber and the damping particles.

2. A vibration reduction device based on a mixture of particle damping and metal rubber according to claim 1, characterized in that: The vibration chamber is formed by a vibration-damping outer shell with an opening at one end and a vibration-damping inner shell with an opening at the other end. The vibration-damping outer shell and the vibration-damping inner shell can move relative to each other with a movable gap between them. A socket is opened on the side wall of the vibration-damping inner shell. One end of the elastic plate is connected to the inner wall of the vibration-damping outer shell, and the other end passes through the socket on the vibration-damping inner shell and extends to the interior of the vibration-damping inner shell.

3. A vibration reduction device based on a mixture of particle damping and metal rubber according to claim 2, characterized in that: A rubber ring is arranged in the movable gap between the vibration-damping inner shell and the vibration-damping outer shell to prevent external dust from entering the movable gap.

4. A vibration reduction device based on a mixture of particle damping and metal rubber according to claim 2, characterized in that: A circle of isolation grooves is arranged at the bottom end of the vibration-damping outer shell, and the opening end of the vibration-damping inner shell is inserted into the isolation grooves and the notch of the isolation grooves is sealed to prevent the damping particles in the vibration cavity from leaking into the active gap.

5. A vibration reduction device based on a mixture of particle damping and metal rubber according to claim 4, characterized in that: A circle of isolation plates is arranged at the bottom end of the vibration-damping shell, and the isolation plates and the inner side wall of the vibration-damping shell form isolation grooves.

6. A vibration reduction device based on a mixture of particle damping and metal rubber according to claim 4, characterized in that: The opening end of the vibration-damping outer shell is provided with a limiting ridge, and the outer side wall of the vibration-damping inner shell is provided with a limiting groove, and the limiting ridge is inserted into the limiting groove to limit the relative displacement between the vibration-damping outer shell and the vibration-damping inner shell.

7. The vibration reduction device based on the mixture of particle damping and metal rubber according to claim 1, characterized in that: The damping particles are metal particles, rubber particles or polymer particles.

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