Bearing damper capable of being biased

Abstract

The bearing damper comprises an upper connecting plate and a lower connecting plate located below the upper connecting plate, the upper portion of the lower connecting plate is fixedly connected with a shell containing damping liquid, the lower portion of the upper connecting plate is fixedly connected with a plunger extending into the damping liquid, and a sealing body is connected between the upper portion of the shell and the upper portion of the plunger. End covers penetrate through the periphery of the shell and are in sliding connection with guiding bodies, the guiding bodies are rotationally connected to adjusting screw rods in threaded connection with the end covers through bearings, and elastic bodies are fixedly arranged at the ends, close to the plungers, of the guiding bodies. The plunger can be reversely biased towards the thermal displacement of the pipeline through the elastic body, the situation that the plunger abuts against the inner wall of the shell due to the fact that the displacement of the pipeline is too large is avoided, secondary stress of the pipeline is prevented, safe operation of the pipeline is guaranteed, vibration of the pipeline can be gradually reduced under the condition that damping liquid continuously generates viscous resistance on the plunger, and the service life of the pipeline is prolonged. And the damping effect of the damper on the pipeline is ensured.

Description

Technical Field

[0001] This utility model relates to the field of damper technology, and in particular to a biasable load-bearing damper. Background Technology

[0002] Pipeline systems are mainly used in various industrial pipelines such as water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, and hydraulic engineering. During operation, sudden changes in the velocity and temperature of the liquid within the pipeline can cause rapid increases or decreases in pressure, resulting in pipeline vibration. Due to the complexity of pipeline systems, it is difficult to eliminate vibration at its source. Prolonged pipeline vibration significantly shortens the pipeline's service life; therefore, vibration damping is necessary to ensure the safe operation of the pipeline system. Viscous dampers are general-purpose devices for pipeline vibration reduction. The principle of viscous dampers is to dissipate the vibrational kinetic energy of the pipeline through the deformation of the damping fluid, converting the vibrational kinetic energy into the heat energy of the damping fluid, reducing the adverse effects of vibration on the pipeline, and ensuring the safe operation of the pipeline system.

[0003] However, pipelines transporting high-temperature media will experience thermal displacement during use. Viscous dampers contain high-viscosity damping fluid, and it is inconvenient to offset the plunger according to the direction of thermal displacement during installation. If the thermal displacement is too large, the plunger may stick to the shell, which can cause stress concentration in the pipeline, leading to pipeline cracking and leakage of high-temperature media, which can easily cause safety accidents. Utility Model Content

[0004] To address the technical problems of existing viscous dampers, such as the inconvenience of offsetting the plunger according to the thermal displacement direction of the pipeline during installation, and the tendency for the plunger to stick to the shell if the thermal displacement is too large, which can easily cause stress concentration in the pipeline and thus lead to pipeline cracking, this utility model provides the following technical solution.

[0005] This utility model discloses a biasable load-bearing damper, comprising an upper connecting plate and a lower connecting plate located below the upper connecting plate. A housing containing damping fluid is fixedly connected to the upper part of the lower connecting plate, and a plunger extending into the damping fluid is fixedly connected to the lower part of the upper connecting plate. A sealing body is connected between the upper part of the housing and the upper part of the plunger. End caps are provided around the perimeter of the housing, and guide bodies are slidably connected to the end caps. The guide bodies are rotatably connected to an adjusting screw threadedly connected to the end caps via bearings, and an elastic body is fixedly provided at one end of the guide body near the plunger.

[0006] As a further technical solution, a base plate is fixedly connected to the lower part of the plunger to seal the lower part of the plunger, and a slider is fixedly connected between the lower part of the base plate and the inner wall of the plunger.

[0007] As a further technical solution, the slider abuts against the lower connecting plate.

[0008] As a further technical solution, the elastomer is a rubber block.

[0009] As a further technical solution, the shell is a hollow cube structure, and the plunger is a hollow cube structure parallel to the perimeter of the shell.

[0010] As a further technical solution, the outer wall of the guide body matches the shape of the inner wall of the end cap, so that the guide body can slide stably within the end cap.

[0011] The beneficial effects of this utility model are as follows: The bearing damper of this utility model has end caps vertically inserted around the perimeter of the housing. A guide body is slidably connected within each end cap. An elastic body is installed at the end of the guide body near the plunger. The displacement of the elastic body relative to the plunger can be adjusted by rotating the adjusting screw. The elastic body biases the plunger in the opposite direction to the thermal displacement of the pipeline. When the pipeline experiences thermal displacement, the elastic body drives the plunger to move towards the center of the housing, thereby preventing the plunger from pressing against the inner wall of the housing due to excessive pipeline displacement, preventing secondary stress in the pipeline, and ensuring safe pipeline operation. The weight of the pipeline and its accessories is pressed onto the slider through the upper connecting plate, plunger, and base plate. When the pipeline vibrates, it generates squeezing and shearing forces on the damping fluid, while the damping fluid generates viscous resistance against the plunger. As the damping fluid continuously generates viscous resistance against the plunger, the vibration of the pipeline gradually decreases, ensuring the damper's vibration reduction effect on the pipeline. Attached Figure Description

[0012] Figure 1 This is a cross-sectional planar schematic diagram of the biasable load-bearing damper of this utility model;

[0013] Figure 2 This is a cross-sectional view along the AA direction of the biasable load-bearing damper of this utility model;

[0014] In the diagram: 1-Upper connecting plate; 2-Sealing body; 3-End cap; 4-Housing shell; 5-Lower connecting plate; 6-Damping fluid; 7-Plunger; 8-Base plate; 9-Slider; 10-Elastic body; 11-Guide body; 12-Bearing; 13-Adjusting screw. 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 an offset load-bearing damper, including an upper connecting plate 1 and a lower connecting plate 5 located below the upper connecting plate 1. The upper connecting plate 1 is connected to a pipe clamp accessory, and the lower connecting plate 5 is connected to a fixed steel frame. A shell 4 containing damping fluid 6 is fixedly connected to the upper part of the lower connecting plate 5, and a plunger 7 extending into the damping fluid 6 is fixedly connected to the lower part of the upper connecting plate 1. When the pipeline vibrates, it generates squeezing and shearing forces on the damping fluid 6, while the damping fluid 6 generates viscous resistance against the plunger 7. As the damping fluid 6 continuously generates viscous resistance against the plunger 7, the vibration of the pipeline gradually decreases, ensuring the damper's vibration reduction effect on the pipeline.

[0018] In a preferred embodiment, a sealing body 2 is connected between the upper part of the housing 4 and the upper part of the plunger 7. The upper part of the sealing body 2 is connected to the plunger 7, instead of the conventional connection to the upper housing or upper connecting plate 1. This arrangement facilitates the biasing of the plunger 7 by the elastic body 10 described below. In this embodiment, the housing 4 is a hollow cube structure, and the plunger 7 is a hollow cube structure parallel to the periphery of the housing 4. Each side of the housing 4 is provided with an end cap 3. One side of the end cap 3 is located inside the housing 4, and the other side of the end cap 3 is located outside the housing. The outer wall of the end cap 3 is sealed to the housing 4 to prevent leakage of the damping fluid 6. The end cap 3 is hollow in the direction facing the plunger 7, and a guide body 11 is slidably connected to the inner cavity of the end cap 3. When the guide body 11 slides against the inner wall of the end cap 3, a sealing ring is provided on the outer wall of the guide body 11 to prevent the damping fluid 6 from entering the inner cavity of the end cap 3. The outer wall of the guide body 11 matches the shape of the inner wall of the end cap 3 to facilitate stable sliding of the guide body 11 within the end cap 3.

[0019] A bearing 12 is fixedly mounted on one side of the guide body 11, and an adjusting screw 13 is rotatably connected to the guide body 11 via the bearing 12. The adjusting end of the adjusting screw 13 is located outside the housing 4, and the adjusting screw 13 is threadedly connected to the outer side of the end cover 3. An elastic body 10 is fixedly mounted on one end of the guide body 11 near the plunger 7. The elastic body 10 is a rubber block or other material that is both wear-resistant and elastic. By turning the adjusting screw 13, the guide body 11 and the elastic body 10 can be moved towards the plunger 7, thereby pushing and biasing the plunger 7.

[0020] In a preferred embodiment, a base plate 8 is fixedly connected to the lower part of the plunger 7 to seal the lower part of the plunger 7. A slider 9 is fixedly connected between the lower part of the base plate 8 and the inner wall of the plunger 7. The slider 9 is made of rubber and abuts against the lower connecting plate 5. Thus, the weight of the pipe and its accessories is pressed onto the slider 9 by the upper connecting plate 1, the plunger 7 and the base plate 8, which can effectively support the weight of the pipe.

[0021] The working principle of this utility model is as follows: When the thermal displacement of the pipeline is to the left, the adjusting screw 13 on the left side is rotated. At this time, the adjusting screw 13 pushes the guide body 11 and the elastic body 10 to move to the right. The elastic body 10 pushes the plunger 7 to move to the right. The moving distance is consistent with the thermal displacement dimension of the pipeline, thus completing the offset of the plunger 7 to the right. Then, the screw 13 is rotated in the opposite direction to move the guide body 11 and the elastic body 10 to the left to reset. When the pipeline undergoes thermal displacement to the left again, the pipeline drives the upper connecting plate 1 and the plunger 7 to move to the left through the pipe clamp accessory. At this time, the plunger 7 moves towards the center of the housing 4, avoiding the problem of secondary stress on the pipeline caused by the plunger 7 pressing against the inner wall of the housing 4. The principle of the adjusting screw 13 pushing the guide body 11 and the elastic body 10 to offset the plunger 7 in the front-back and left-right directions is the same, and will not be repeated here.

[0022] 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 biasable load damper comprising an upper connecting plate (1) and a lower connecting plate (5) located below the upper connecting plate (1), a housing (4) containing damping liquid (6) being fixedly connected to the upper portion of the lower connecting plate (5), and a plunger (7) being fixedly connected to the lower portion of the upper connecting plate (1) and extending into the damping liquid (6), characterized in that: A sealing body (2) is connected between the upper part of the shell (4) and the upper part of the plunger (7), end covers (3) are arranged around the shell (4), the end covers (3) are slidingly connected with guide bodies (11), the guide bodies (11) are rotatably connected to adjusting screws (13) which are threadedly connected with the end covers (3) through bearings (12), and one end of the guide bodies (11) close to the plunger (7) is fixedly provided with elastic bodies (10).

2. The yieldable load damper of claim 1, wherein: A bottom plate (8) sealing the lower part of the plunger (7) is fixedly connected to the lower part of the plunger (7), and a sliding block (9) is fixedly connected between the lower part of the bottom plate (8) and the inner wall of the plunger (7).

3. The yieldable load damper of claim 2, wherein: The sliding block (9) abuts against the lower connecting plate (5).

4. The yieldable load damper of claim 1, wherein: The elastic body (10) is a rubber block.

5. The yieldable load damper of claim 1, wherein: The shell (4) is a hollow square structure, and the plunger (7) is a hollow square structure parallel to the shell (4).

6. The yieldable load damper of claim 1, wherein: The outer wall of the guide body (11) is matched with the inner wall of the end cover (3) in shape, so that the guide body (11) stably slides in the end cover (3).

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