Vertical damping device

Abstract

The utility model discloses a vertical vibration damper which comprises an upper mounting plate and a lower mounting plate located below the upper mounting plate, the upper portion of the lower mounting plate is fixedly connected with a shell, an inner cavity of the shell is filled with damping fluid, and the center of the upper portion of the shell is slidably connected with a column fixedly connected with the upper mounting plate. The end, extending into the shell, of the column is connected with a damping ball, the damping ball is arranged on the upper portion of the damping liquid, the upper portion of the lower mounting plate is fixedly connected with a plurality of compressed springs fixedly connected with the lower portion of the damping ball, the damping ball is provided with a plurality of through holes in the vertical direction, and guide rods fixedly connected with the lower mounting plate and penetrating into the through holes are arranged in the axial direction of the compressed springs. The multiple damping forces of the vertical damping device improve the damping application range and the damping effect of the product, and ensure the damping effect on the vibration in the vertical direction of the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of viscous damper technology, and in particular to a vertical vibration reduction device. Background Technology

[0002] During operation, pipeline systems often experience vibrations due to sudden changes in liquid velocity and rapid pressure fluctuations. Because of the complexity of pipeline systems, eliminating vibration at its source is difficult. Prolonged pipeline vibration significantly shortens pipeline lifespan, necessitating vibration damping to ensure safe operation. Dampers are common devices for pipeline vibration reduction. Among various applications, hydraulic dampers, viscous dampers, and spring dampers are the most frequently used. Installing one of these dampers below the pipeline allows for timely vibration reduction, ensuring normal pipeline operation.

[0003] However, in practical applications, while spring dampers and hydraulic dampers perform well in reducing low-frequency vibrations with large amplitudes in pipelines, their effectiveness is less than ideal for reducing small-amplitude and high-frequency vibrations. Viscous dampers, on the other hand, are effective at reducing high-frequency vibrations in pipelines but less so for large-amplitude, low-frequency vibrations, resulting in a relatively narrow range of applications for these dampers. Furthermore, these dampers are also ineffective at reducing vertical vibrations in pipelines. Utility Model Content

[0004] To address the technical problems of existing dampers having a narrow range of applications and poor vibration reduction effect on vertical vibrations of pipelines, this utility model provides the following technical solution.

[0005] This utility model discloses a vertical vibration damping device, comprising an upper mounting plate and a lower mounting plate located below the upper mounting plate. A housing is fixedly connected to the upper part of the lower mounting plate, and the inner cavity of the housing is filled with damping fluid. A column fixedly connected to the upper mounting plate is slidably connected to the center of the upper part of the housing. A damping ball is connected to one end of the column that extends into the housing and is placed above the damping fluid. A plurality of compression springs fixedly connected to the lower part of the damping ball are fixedly connected to the upper part of the lower mounting plate. The damping ball has a plurality of through holes in the vertical direction. A guide rod that is fixedly connected to the lower mounting plate and passes through the through holes is provided in the axial direction of the compression springs.

[0006] As a further technical solution, the upper part of the damping ball is provided with a cavity, the lower end of the column is sealed at the upper opening of the cavity, and the cavity is filled with damping particles.

[0007] As a further technical solution, the damping particles are metal particles or plastic particles.

[0008] As a further technical solution, the number of the through holes and the guide rods is the same as the number of the compression springs, and the guide rods correspond one-to-one with the compression springs.

[0009] As a further technical solution, a number of sealing rings are provided at the connection between the shell and the column.

[0010] As a further technical solution, the upper surface of the damping ball is higher than the liquid surface of the damping fluid.

[0011] The beneficial effects of this invention are as follows: The damping ball inside the housing has a cavity filled with numerous damping particles. These particles generate a damping force opposite to the vibration direction of the damping ball, resulting in excellent vibration reduction for high-frequency vibrations. Furthermore, multiple compression springs are located at the bottom of the damping ball; the combination of the damping ball and the springs provides support and vibration reduction, effectively reducing low-frequency vibrations with large amplitudes. Moreover, the damping ball is immersed in damping fluid; when it vibrates with the column, it is damped by the fluid, providing good vibration reduction for high-frequency vibrations with small amplitudes. Thus, multiple damping mechanisms enhance the product's vibration reduction range and effectiveness, ensuring effective vibration reduction for vertical vibrations in pipelines. Attached Figure Description

[0012] Figure 1 This is a cross-sectional view of the vertical vibration damping device of this utility model;

[0013] Figure 2 This is a schematic cross-sectional view of the vertical vibration damping device of this utility model along the AA direction;

[0014] In the diagram: 1-Upper mounting plate; 2-Column; 3-Sealing ring; 4-Through hole; 5-Damping ball; 6-Damping fluid; 7-Guide rod; 8-Compression spring; 9-Damping particles; 10-Cavity; 11-Shell; 12-Lower mounting plate. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0016] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] like Figure 1 and Figure 2 As shown, this utility model discloses a vertical vibration damping device, including an upper mounting plate 1 and a lower mounting plate 12 located below the upper mounting plate 1. The upper mounting plate 1 is connected to the vibrating body, and the lower mounting plate 12 is connected to a fixed steel frame. A housing 11 is fixedly connected to the upper part of the lower mounting plate 12. The inner cavity of the housing 11 is filled with a high-viscosity damping fluid 6, which provides viscous damping force for the entire device.

[0018] In a preferred embodiment, a column 2, which is fixedly connected to an upper mounting plate 1, is slidably connected to the upper center of the housing 11. The column 2 penetrates the housing 11, and several sealing rings 3 are provided at the connection between the housing 11 and the column 2. The upper end of the column 2 is fixedly connected to the upper mounting plate 1, and the lower end of the column 2 extends into the housing 11 and is connected to a damping ball 5. The damping ball 5 can move vertically with the column 2, thereby transmitting the vibration of the vibrator from the upper mounting plate 1 and the column 2 to the damping ball 5. The damping ball 5 is placed above the damping fluid 6, and the upper end surface of the damping ball 5 is higher than the surface of the damping fluid 6. When the damping ball 5 vibrates vertically downward, it exerts a squeezing and shearing effect on the damping fluid 6. The damping fluid 6 generates a reverse damping force on the damping ball 5 to alleviate the vibration of the damping ball 5 and the column 2, thereby reducing the vibration of the vibrator.

[0019] In a preferred embodiment, the upper part of the damping ball 5 is provided with a cavity 10, which is filled with damping particles 9. After the damping particles 9 are filled into the cavity 10, the lower end of the column 2 is sealed at the upper opening of the cavity 10. The damping particles 9 can be metal particles or plastic particles. This invention does not limit the size of the damping particles 9; their particle sizes can be uniform or inconsistent. When the multiple damping particles 9 in the cavity 10 are vibrated by the damping ball 5, they will generate kinetic energy opposite to the vibration direction of the damping ball 5 under the action of inertia. This can convert the vibration energy of the damping ball 5 into the kinetic energy of the damping particles, generating a damping force on the damping ball 5.

[0020] In a preferred embodiment, a plurality of compression springs 8 are fixedly connected to the upper part of the lower mounting plate 12 and fixedly connected to the lower part of the damping ball 5. The damping ball 5 has a plurality of through holes 4 in the vertical direction, and a plurality of guide rods 7 are provided in the axial direction of the compression springs 8. The guide rods 7 are fixedly connected to the lower mounting plate 12 and pass through the through holes 4. The number of through holes 4 and guide rods 7 is the same as the number of compression springs 8, and the guide rods 7 correspond one-to-one with the compression springs 8 to ensure that each compression spring 8 has a guide rod 7, and each guide rod 7 passes through the through hole 4. The insertion of the guide rods 7 into the through holes 4 can ensure that the damping ball 5 vibrates in the vertical direction.

[0021] Of course, it is also possible for the number of through holes 4, guide rods 7, and compression springs 8 to be different. For example, in this embodiment, there are four compression springs 8, evenly distributed below the damping ball 5. There are also four through holes 4 and four guide rods 7. The four guide rods 7 are inserted into the four through holes 4 to ensure that the damping ball 5 vibrates in the vertical direction; if there are only two or three guide rods 7, it is also possible to ensure that the damping ball 5 vibrates in the vertical direction.

[0022] The working principle of this invention is as follows: During operation, the vibrator is mounted on the upper mounting plate 1. When the vibrator vibrates vertically, the vibration is transmitted to the damping ball 5 through the upper mounting plate 1 and the column 2. When the damping ball 5 vibrates vertically, it first exerts downward pressure on the compression spring 8. At this time, the compression spring 8 is compressed downward and generates a damping force on the damping ball 5. Simultaneously, when the compression spring 8 vibrates downward, it exerts a squeezing and shearing effect on the damping fluid 6. At this time, the damping fluid 6 generates a reverse damping force on the compression spring 8 to alleviate the vibration of the damping ball 5. Moreover, the multiple damping particles 9 located in the cavity 10, after receiving the vibration of the damping ball 5, generate kinetic energy in the opposite direction to that of the damping ball 5 under the action of inertia, generating a damping force on the damping ball 5. The above three damping forces are the forces that hinder the vibration of the damping ball 5, improving the application range and vibration reduction effect of the product. In particular, the multiple damping particles 9 will vibrate violently at high frequencies, transferring the vibration energy of the damping ball 5 to the damping particles 9, resulting in a better vibration reduction effect.

[0023] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A vertical vibration damping device, comprising an upper mounting plate (1) and a lower mounting plate (12) located below the upper mounting plate (1), wherein a housing (11) is fixedly connected to the upper part of the lower mounting plate (12), and the inner cavity of the housing (11) is filled with damping fluid (6), characterized in that: The upper center of the housing (11) is slidably connected to a column (2) which is fixedly connected to the upper mounting plate (1). One end of the column (2) extending into the housing (11) is connected to a damping ball (5). The damping ball (5) is placed on the upper part of the damping fluid (6). The upper part of the lower mounting plate (12) is fixedly connected to several compression springs (8) which are fixedly connected to the lower part of the damping ball (5). The damping ball (5) has several through holes (4) in the vertical direction. The compression spring (8) has a guide rod (7) which is fixedly connected to the lower mounting plate (12) and passes through the through hole (4).

2. The vertical damping device according to claim 1, characterized in that: The damping ball (5) has a cavity (10) at its upper part. The lower end of the column (2) is sealed at the upper opening of the cavity (10). The cavity (10) is filled with damping particles (9).

3. The vertical damping device of claim 2, wherein: The damping particles (9) are metal particles or plastic particles.

4. The vertical damping device of claim 1, wherein: The number of through holes (4) and guide rods (7) is the same as the number of compression springs (8), and the guide rods (7) correspond one-to-one with the compression springs (8).

5. The vertical shock absorbing device of claim 1, wherein: Several sealing rings (3) are provided at the connection between the shell (11) and the column (2).

6. The vertical damping device of claim 1, wherein: The upper surface of the damping ball (5) is higher than the liquid surface of the damping liquid (6).

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