Rolling support type vibration damper

Abstract

This utility model discloses a rolling support type vibration damping device, including an upper mounting plate and a lower mounting plate opposite to the upper mounting plate. A housing is connected to the upper part of the lower mounting plate, and the housing is filled with damping fluid. A connecting column is fixedly connected to the lower part of the upper mounting plate, and a hollow damping box is connected to one end of the connecting column extending into the housing. Several rolling elements are provided on the upper part of the lower mounting plate, and an inverted groove abutting against the rolling elements is provided at the lower end of the damping box. A horizontal shaft is fixedly provided in the inner cavity of the damping box in the horizontal direction, and several pendulums are rotatably connected to the horizontal shaft axis. The rolling support type of this utility model has very low frictional resistance, reducing the force generated on the vibration damping device when the moving equipment vibrates in the horizontal direction. This prevents the horizontal vibration of the moving equipment from being transmitted to the steel structure. The damping fluid and the pendulums simultaneously provide damping to the damping box, achieving both vibration damping and preventing horizontal vibration with the steel structure.

Description

Technical Field

[0001] This utility model relates to the field of vibration reduction equipment technology, and in particular to a rolling support type vibration reduction device. Background Technology

[0002] Vibration dampers are widely used energy-dissipating and vibration-damping devices, extensively applied in vibration control across various industries such as machinery, building structures, and petrochemical pipelines. They effectively reduce vibration and prevent damage to equipment during vibration. Vibration dampers come in various structural types, with portable vibration dampers being the primary product for damping moving equipment. Conventional portable vibration dampers have a sliding structure. When the vibration from the moving equipment is transmitted to the portable damper, horizontal friction occurs inside. This frictional energy dissipation ensures the safe operation of the moving equipment.

[0003] However, the friction of sliding vibration dampers is very large during vibration reduction, especially when the moving equipment is heavy. Under the vertical load of heavy objects, the horizontal friction of the vibration damper will be even greater. Excessive friction not only affects the service life of the vibration damper and causes friction damage and failure during use, but also causes vibration to be transmitted from the vibration damper to the supporting steel structure, thereby causing resonance between the vibration damper and the supporting steel structure, resulting in a decrease in the vibration reduction effect of the vibration damper. Utility Model Content

[0004] To address the technical problem that existing vibration dampers experience high friction during vibration damping operations, which not only affects the service life of the damper but also causes vibration to be transmitted from the damper to the supporting steel structure, leading to resonance between the damper and the steel structure and a decrease in the damping effect of the damper, this utility model provides the following technical solution.

[0005] This utility model discloses a rolling support type vibration damping device, including an upper mounting plate and a lower mounting plate opposite to the upper mounting plate. A housing is connected to the upper part of the lower mounting plate, and the housing is filled with damping fluid. A connecting column is fixedly connected to the lower part of the upper mounting plate. One end of the connecting column extending into the housing is connected to a hollow damping box. A plurality of rolling elements are provided on the upper part of the lower mounting plate. An inverted groove abutting against the rolling elements is provided at the lower end of the damping box. A horizontal shaft is fixedly provided in the horizontal direction inside the damping box. A plurality of pendulums are rotatably connected to the horizontal shaft along its axial direction.

[0006] As a further technical solution, the damping box is a hollow cube or cuboid structure.

[0007] As a further technical solution, the upper part of the lower mounting plate is provided with a groove for mounting the rolling element.

[0008] As a further technical solution, the rolling element is a ball or a rolling column.

[0009] As a further technical solution, the upper part of the housing is provided with a through hole with an inner diameter larger than the outer diameter of the connecting post, and the connecting post passes through the through hole and does not contact the housing when it vibrates and displaces.

[0010] As a further technical solution, a sealing body is connected between the housing and the connecting column.

[0011] The beneficial effects of this invention are as follows: Multiple rolling elements are arranged on the upper part of the lower mounting plate, and an inverted groove at the lower end of the damping box abuts against the rolling elements. The multiple rolling elements support the damping box, thereby providing rolling support for the moving equipment. The frictional resistance of this rolling support is very small, reducing the force exerted on the vibration damping device when the moving equipment vibrates horizontally, and preventing the horizontal vibration of the moving equipment from being transmitted to the steel structure. The damping box is immersed in damping fluid and contains multiple pendulums. Thus, the damping fluid and the pendulums simultaneously provide damping for the damping box, achieving both vibration reduction and preventing horizontal vibration with the steel structure. Attached Figure Description

[0012] Figure 1 This is a cross-sectional planar schematic diagram of the rolling support type vibration damping device of this utility model;

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

[0014] In the diagram: 1-Upper mounting plate; 2-Sealing body; 3-Housing; 4-Damping box; 5-Damping fluid; 6-Lower mounting plate; 7-Rolling element; 8-Pendulum; 9-Horizontal shaft; 10-Connecting column. 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 rolling support type vibration damping device, including an upper mounting plate 1 and a lower mounting plate 6 opposite to the upper mounting plate 1. The moving device is connected to the upper mounting plate 1 by bolts, and the lower mounting plate 6 is connected to a fixed steel frame by bolts. A housing 3 is connected to the upper part of the lower mounting plate 6. The housing 3 is a hollow cuboid structure with an opening at its lower end, and is fastened and fixed to the upper part of the lower mounting plate 6. The housing 3 is filled with a high-viscosity damping fluid 5, which provides viscous damping force for the vibration damping device.

[0018] In a preferred embodiment, a connecting post 10 is fixedly connected to the lower part of the upper mounting plate 1. The connecting post 10 is a hollow column structure. The upper end of the connecting post 10 is fixedly connected to the upper mounting plate 1, and the lower end of the connecting post 10 extends into the housing 3. A sealing body 2 is connected between the housing 3 and the connecting post 10. The upper part of the housing 3 is provided with a through hole with an inner diameter larger than the outer diameter of the connecting post 10. The connecting post 10 passes through the through hole and does not contact the housing 3 when it vibrates and shifts.

[0019] Specifically, the end of the connecting column 10 extending into the housing 3 is connected to a hollow damping box 4. The damping box 4 is a hollow cube or cuboid structure, and all or part of the damping box 4 is submerged in the damping fluid 5. When the moving equipment vibrates, the upper mounting plate 1 and the connecting column 10 transmit the vibration to the damping box 4. The damping box 4 exerts a squeezing and shearing effect on the surrounding damping fluid 5, and the damping fluid 5 generates a reverse damping force on the damping box 4 to alleviate the vibration of the damping box 4 and the connecting column 10, thereby reducing the vibration of the moving equipment.

[0020] In a preferred embodiment, the upper part of the lower mounting plate 6 is provided with a plurality of rolling elements 7, which are balls or rollers. In this case, the upper part of the lower mounting plate 6 is provided with a groove for mounting the rolling elements 7, and the rolling elements 7 are confined within the groove of the lower mounting plate 6 to roll. At the same time, the lower end of the damping box 4 is provided with an inverted groove that abuts against the rolling elements 7. When the damping box 4 vibrates and displaces relative to the lower mounting plate 6, the rolling elements 7 are always located within the groove of the lower mounting plate 6 and the inverted groove at the lower end of the damping box 4. Thus, the rolling elements 7 will roll back and forth with the displacement of the damping box 4, and the rolling friction resistance is very small, which can prevent the horizontal vibration of the moving equipment from being transmitted to the fixed steel frame.

[0021] In a preferred embodiment, a horizontal shaft 9 is fixedly mounted horizontally within the damping box 4, with its two ends fixedly connected to two opposing inner walls of the damping box 4. Several pendulums 8 are rotatably connected to the horizontal shaft 9 along its axis. The pendulums 8 are evenly distributed along the horizontal shaft 9 and can swing relative to it. When the moving equipment is subjected to vibration, the multiple pendulums 8 within the damping box 4 will also produce a swing opposite to the direction of vibration displacement of the damping box 4. These counter-oscillating pendulums 8 will generate inertial damping force on the damping box 4, gradually reducing its vibration.

[0022] The working principle of this utility model is as follows: During operation, the moving equipment is fixed to the upper mounting plate 1 by bolt connections. When the moving equipment vibrates horizontally, it drives the damping box 4 to reciprocate horizontally through the upper mounting plate 1 and connecting column 10. The rolling element 7 will roll back and forth with the displacement of the damping box 4. The resistance of rolling friction is very small and can be almost ignored, thus preventing the horizontal vibration of the moving equipment from being transmitted to the fixed steel frame. When the damping box 4 reciprocates horizontally, it will squeeze and shear the damping fluid 5. At this time, the damping fluid 5 will generate a reverse damping force to consume the vibration load of the damping box 4. At the same time, the multiple pendulums 8 located in the damping box 4 will also generate a swing opposite to the displacement direction of the damping box 4. These reverse swinging pendulums 8 will generate an inertial damping force on the damping box 4, gradually reducing the vibration of the damping box 4. In this way, the damping fluid 5 and the pendulums 8 can simultaneously generate a damping effect on the damping box 4, which not only achieves the vibration reduction effect but also avoids horizontal vibration with the steel structure.

[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 rolling support type vibration damping device, comprising an upper mounting plate (1) and a lower mounting plate (6) disposed opposite to the upper mounting plate (1), wherein a housing (3) is connected to the upper part of the lower mounting plate (6), and the housing (3) is filled with damping fluid (5), characterized in that: The upper mounting plate (1) is fixedly connected to a connecting column (10) at its lower part. The end of the connecting column (10) that extends into the housing (3) is connected to a hollow damping box (4). The lower mounting plate (6) is provided with several rolling elements (7) at its upper part. The damping box (4) is provided with an inverted groove at its lower end that abuts against the rolling elements (7). The damping box (4) is fixedly provided with a horizontal shaft (9) in the horizontal direction. Several pendulums (8) are rotatably connected to the horizontal shaft (9) in the axial direction.

2. The rolling support type vibration damping device according to claim 1, characterized in that: The damping box (4) is a hollow cube or cuboid structure.

3. The rolling support type vibration damping device according to claim 1, characterized in that: The lower mounting plate (6) has a groove on its upper part for mounting the rolling element (7).

4. The rolling support type vibration damping device according to claim 1, characterized in that: The rolling element (7) is a ball or a rolling column.

5. The rolling support type vibration damping device according to claim 1, characterized in that: The upper part of the housing (3) is provided with a through hole with an inner diameter larger than the outer diameter of the connecting column (10). When the connecting column (10) passes through the through hole and vibrates and displaces, it does not touch the housing (3).

6. The rolling support type vibration damping device according to claim 1, characterized in that: A sealing body (2) is connected between the housing (3) and the connecting column (10).

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