Particle damping shock absorber and vibration equipment

Abstract

The utility model discloses a particle damping shock absorber which comprises a shell, a cover plate, a partition plate and a particle medium. An opening is formed in the top end of the shell; the cover plate is fixed on the shell and blocks the opening of the shell; the cover plate and the shell enclose to form an internal space; the partition plates are fixed in the shell and divide the internal space into a plurality of cavities which are not communicated with one another; each cavity is used for being filled with particle media. According to the particle damping shock absorber, the inner space defined by the shell and the cover plate is divided into the multiple cavities through the partition plates, the cavities can be filled with different particle media according to needs, and therefore the damping requirement of vibration of all frequency bands is met. The utility model further provides vibration equipment using the particle damping shock absorber, and the vibration absorption effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction of vibration equipment, and more specifically, to a particle damping vibration isolator and also to a vibration equipment. Background Art

[0002] Ship vibration reduction usually adopts raft vibration reduction system, that is, the ship's power equipment (power equipment includes engine and gearbox, etc.) is installed on a raft, and the raft is connected to the hull through vibration isolators, and the vibration energy is isolated by the vibration isolators. This method will change the connection strength between the raft and the hull, and for some ships and rafts, the construction of the vibration isolator is difficult, and it may also damage the ship's hull structure.

[0003] In order to prevent the hull from being damaged and ensure the connection strength between the hull and the raft, the prior art also adopts a method of attaching a damper to the raft for vibration reduction. However, this method has a good vibration reduction effect on vibrations with a frequency band above 315 Hz, but has a poor vibration reduction effect on low-frequency vibrations below 315 Hz.

[0004] Therefore, how to make the damper have a good vibration reduction effect on low-frequency vibrations below 315 Hz is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] In view of this, the utility model provides a particle damping vibration absorber, the internal space surrounded by the shell and the cover plate is divided into multiple cavities by a partition, and different particle media can be filled as needed to meet the vibration reduction requirements of vibrations in various frequency bands, achieving a good vibration reduction effect for vibrations above 315Hz and a good vibration reduction effect for low-frequency vibrations below 315Hz. The utility model also provides a vibration device using the above particle damping vibration absorber, which has a good vibration reduction effect.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A particle damping vibration isolator, comprising:

[0008] A shell having an opening at a top end;

[0009] A cover plate, the cover plate is fixed to the shell and blocks the opening of the shell; the cover plate and the shell enclose an internal space;

[0010] A partition is fixed in the shell and divides the internal space into a plurality of cavities which are not connected to each other; each of the cavities is used to fill the particle medium.

[0011] Optionally, the particle damping vibration isolator further includes a rib plate, and the rib plate is fixed in the cavity.

[0012] Optionally, in the above-mentioned particle damping vibration isolator, a plurality of the ribs are provided in each of the cavities; and the ribs are distributed on two opposite sides of the cavity.

[0013] Optionally, in the above-mentioned particle damping vibration isolator, the ribs in each of the cavities are symmetrically distributed.

[0014] Optionally, in the above particle damping vibration isolator, a mounting ear is provided at the bottom end of the shell, and a fixing member mounting hole is provided on the mounting ear.

[0015] Optionally, in the above-mentioned particle damping vibration isolator, the mounting ear and the shell are fixedly connected via a rib plate; the plate surface of the rib plate is perpendicular to the plate surface of the rib plate in the corresponding cavity.

[0016] Optionally, in the above-mentioned particle damping vibration isolator, the number of the mounting ears is two, and the two mounting ears are symmetrically distributed on both sides of the shell.

[0017] Optionally, in the above-mentioned particle damping vibration isolator, the internal space is a rectangular parallelepiped structure, and there are two partitions which are cross-distributed to divide the internal space into four rectangular parallelepiped cavities.

[0018] Optionally, in the above-mentioned particle damping vibration isolator, different cavities are filled with the same particle medium, or filled with different particle media.

[0019] A vibration device comprises a device body and a damper installed on the device body, wherein the damper is the particle damping vibration absorber described in any one of the above technical solutions.

[0020] The utility model provides a particle damping vibration isolator, comprising a shell, a cover plate and a partition plate; the top end of the shell is open; the cover plate is fixed to the shell and blocks the opening of the shell; the cover plate and the shell form an internal space; the partition plate is fixed in the shell and divides the internal space into a plurality of cavities which are not connected to each other; each cavity is used to fill a particle medium respectively.

[0021] In the above-mentioned particle damping vibration isolator, the internal space enclosed by the shell and the cover plate is divided into multiple cavities by partitions. Each cavity can be filled with different particle media as needed to meet the vibration reduction requirements of vibrations in various frequency bands, thereby achieving a good vibration reduction effect on vibrations above 315 Hz and a good vibration reduction effect on low-frequency vibrations below 315 Hz.

[0022] The utility model also provides a vibration device using the particle damping vibration isolator, which has a good vibration reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a housing provided in an embodiment of the utility model;

[0025] Figure 2 A schematic diagram of the assembly of a housing and a cover plate provided in an embodiment of the utility model;

[0026] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0027] Figure 4 for Figure 2 a side view of the structure shown;

[0028] in, Figure 1-Figure 4 middle:

[0029] Rib plate 101; mounting ear 102; housing 103; rib plate 104; partition plate 105; cover plate 106. DETAILED DESCRIPTION

[0030] The embodiment of the utility model discloses a particle damping vibration absorber, the internal space enclosed by the shell and the cover plate is divided into multiple cavities by a partition, and different particle media can be filled respectively as needed to meet the vibration reduction requirements of vibrations in various frequency bands, so as to achieve good vibration reduction effects for vibrations above 315 Hz and low-frequency vibrations below 315 Hz. The embodiment of the utility model also discloses a vibration device using the particle damping vibration absorber, which has good vibration reduction effects.

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-4The embodiment of the utility model provides a particle damping vibration isolator, including a shell 103, a cover plate 106 and a partition plate 105; the top end of the shell 103 is open; the cover plate 106 is fixed to the shell 103 and blocks the opening of the shell 103; the cover plate 106 and the shell 103 enclose an internal space; the partition plate 105 is fixed in the shell 103 and divides the above-mentioned internal space into a plurality of cavities that are not connected to each other; each cavity is used to fill a particle medium.

[0033] In the above-mentioned particle damping vibration isolator, the internal space enclosed by the shell 103 and the cover plate 106 is divided into multiple cavities by the partition 105. Each cavity can be filled with different particle media as needed to meet the vibration reduction requirements of vibrations in various frequency bands, thereby achieving a good vibration reduction effect on vibrations above 315 Hz and a good vibration reduction effect on low-frequency vibrations below 315 Hz.

[0034] The particle damping vibration absorber also includes a rib 104, which is fixed in the cavity. In the solution provided in this embodiment, the rib 104 is provided in the cavity, which can increase the area of ​​the particle medium contacting the cavity, increase the vibration energy received by the particle medium, and optimize the damping effect of the particle damping vibration absorber. When the particle damping vibration absorber is applied to the raft frame of the ship, it can reduce the low-frequency vibration of the raft frame and effectively improve the ship camouflage technology; of course, the particle damping vibration absorber provided in this embodiment can also be applied to other vibration equipment besides ships. After the particle damping vibration absorber is equipped with ribs 104, the vibration reduction effect is improved, which helps to reduce the use of particle media and is conducive to cost saving.

[0035] In some embodiments, each cavity is provided with a plurality of ribs 104, and each rib 104 is distributed on two opposite sides of the cavity. Specifically, the ribs 104 in each cavity can be arranged to be symmetrically distributed.

[0036] The shell 103 includes a barrel-shaped side wall and a bottom plate sealed at the bottom end of the side wall, and the top end of the side wall is open. The ribs 104 in each cavity can be arranged to be fixedly connected only to the shell 103, such as fixedly connected to the bottom plate and side wall of the shell 103, according to their arrangement positions, or can be arranged to be fixedly connected to both the shell 103 and the partition 105, such as fixedly connected to the partition 105 and the bottom plate of the shell 103. The side wall and bottom plate of the shell 103 can be arranged as an integrated structure.

[0037] For easy installation, a mounting ear 102 is provided at the bottom of the shell 103. The mounting ear 102 is provided with a fixing hole, through which the fixing can be installed and fixedly connected to the raft frame, so that the entire particle damping vibration isolator is fixed to the raft frame.

[0038] The particle damping vibration isolator provided in this embodiment is attached to the surface of a vibrating device such as a ship's raft through a fixing member. The installation method is simple and detachable, and does not affect the overall stiffness of the vibrating device such as the ship's raft.

[0039] There are two mounting ears 102, which are symmetrically distributed on both sides of the housing 103. The number of the fixing holes on the two mounting ears 102 can be set to 4-8, and the fixing holes are matched with the mounting holes reserved for the vibration equipment to provide a matching space between the particle damping vibration absorber and the vibration equipment, thereby improving the installation adaptability of the particle damping vibration absorber.

[0040] The mounting ear 102 and the shell 103 are fixedly connected by the rib plate 101. The plate surface of the rib plate 101 is perpendicular to the plate surface of the rib plate 104 in the corresponding cavity. The cavity surrounded by the part of the shell 103 connected to the rib plate 101 is the cavity corresponding to the rib plate 101. The plate surfaces of the rib plate 104 and the rib plate 101 are perpendicular to each other, which can reduce the direct transmission of vibration energy through the inner wall of the shell 103, so that more vibration energy is transmitted through the particle medium, thereby improving the vibration reduction effect.

[0041] The rib plate is connected to the center of the cavity wall of the corresponding cavity, so as to increase the rigidity of the shell 103 at the position where the rigidity of the cavity wall is weakest, thereby improving the anti-deformation capability of the particle damping vibration absorber.

[0042] In one implementation, the internal space of the particle damping vibration isolator is a rectangular parallelepiped structure, and there are two partitions 105 that are cross-distributed to divide the internal space into four rectangular parallelepiped cavities.

[0043] Specifically, the two partitions 105 divide the internal space into four cavities of equal volume, and six ribs 104 are arranged in each cavity.

[0044] In the above-mentioned particle damping vibration isolator, different cavities are filled with the same particle medium or different particle medium. The design of the partition 105 not only distinguishes the filled particle medium, but also avoids the mixing of the particle medium. The vibration energy is mainly transmitted to the particle medium in the cavity through the fixing parts such as bolts connecting the shell 103 and the vibration device, and the contact surface between the shell 103 and the vibration device. When the vibration energy is transmitted from one mounting ear 102 to another mounting ear 102, most of the transmitted energy is consumed by the particle medium in at least two cavities, thereby achieving the effect of reducing the vibration energy.

[0045] When each cavity in the above-mentioned particle damping vibration absorber is filled with the same particle medium, multiple particle damping vibration absorbers can be arranged on the vibration device, and different particle damping vibration absorbers are filled with different particle media to achieve good vibration reduction effect on vibrations of various frequencies.

[0046] The embodiment of the utility model further provides a vibration device, including a device body and a damper installed on the device body, and the damper is the particle damping vibration isolator provided in the above embodiment.

[0047] In one embodiment, the vibration device is a ship, including a hull and a raft connected to the hull, and the raft is configured to be used for installing a device body with a damper.

[0048] The vibration device provided in this embodiment uses the particle damping vibration absorber provided in the above embodiment, and has a good vibration reduction effect. Of course, the vibration device provided in this embodiment also has other effects of the particle damping vibration absorber provided in the above embodiment, which will not be repeated here.

[0049] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A particle damping vibration isolator, characterized in that: include: A shell having an opening at a top end; a cover plate, the cover plate being fixed to the shell and blocking the opening of the shell; The cover plate and the shell enclose an internal space; A partition is fixed in the shell and divides the internal space into a plurality of cavities which are not connected to each other; each of the cavities is used to fill the particle medium.

2. The particle damping vibration absorber according to claim 1, characterized in that: Also included is a rib plate, which is fixed in the cavity.

3. The particle damping vibration absorber according to claim 2, characterized in that: A plurality of ribs are arranged in each cavity; the ribs are distributed on two opposite sides of the cavity.

4. The particle damping vibration absorber according to claim 3, characterized in that: The ribs in each cavity are symmetrically distributed.

5. The particle damping vibration absorber according to claim 2, characterized in that: The bottom end of the shell is provided with a mounting ear, and the mounting ear is provided with a fixing member mounting hole.

6. The particle damping vibration absorber according to claim 5, characterized in that: The mounting ear and the shell are fixedly connected via a rib plate; a plate surface of the rib plate is perpendicular to a plate surface of the rib plate in the corresponding cavity.

7. The particle damping vibration absorber according to claim 5, characterized in that: There are two mounting ears, which are symmetrically distributed on both sides of the shell.

8. The particle damping vibration isolator according to claim 1, characterized in that: The internal space is a rectangular parallelepiped structure, and the partitions are two and cross-distributed, dividing the internal space into four rectangular parallelepiped cavities.

9. The particle damping vibration isolator according to claim 1, characterized in that: Different cavities are filled with the same particle medium, or filled with different particle medium.

10. A vibration device, characterized in that: It comprises a device body and a damper installed on the device body, and the damper is the particle damping vibration absorber according to any one of claims 1-9.

Images