An anti-resonance damping structure for an AF line suspension column

Abstract

This application relates to the field of electrified railway construction, and in particular to an anti-resonance damping structure for an AF line suspension column. The structure includes a column body, a reference plate at the top of the column body, two first support plates fixedly connected to the upper surface of the reference plate, and a second support plate rotatably connected to each first support plate. A support plate is positioned above the reference plate, and two drive frames are mounted on the lower surface of the support plate. Two first support rods are rotatably connected to both ends of each drive frame. This invention, through the arrangement of the support plate and drive frames, and the cooperative relationship between them, allows the column body to transmit vibrations to the drive frames via the reference plate and first support rods. This causes the drive frames to extend and retract the damping rods, thereby mitigating and absorbing the vibrations experienced by the column body, thus achieving the anti-resonance effect of the support plate and drive frames described in this application.

Description

Technical Field

[0001] This utility model relates to the field of electrified railway construction technology, specifically to an anti-resonance damping structure for AF line suspension columns. Background Technology

[0002] AF line generally refers to the auxiliary conductors (such as protective conductors, positive feeders, return conductors, etc.) in electrified railways, excluding the catenary and contact conductors. These are collectively called auxiliary feeders (AF). The suspension posts are typically made of steel or concrete and are used to suspend the AF line above bridges, tunnels, or stations. Their main functions include supporting the conductor, fixing the AF line and maintaining its relative position to other parts of the contact network; providing electrical insulation (using insulators to achieve electrical isolation between the conductor and the post); ensuring mechanical stability; withstanding wind loads, ice loads, and conductor tension; and ensuring system safety.

[0003] In electrified railway overhead contact systems, the anti-resonance design of the AF line (additional suspension line) suspension columns is crucial, as resonance can lead to conductor fatigue fracture, hardware loosening, and even damage to the column structure. Resonance in AF line suspension columns is typically caused by the following factors: wind-induced vibration, such as the Karman vortex street (periodic eddies generated behind the conductor in a stable wind field); light wind vibration, high-frequency, small-amplitude vibrations of the conductor (frequency 1–100 Hz) at low wind speeds (0.5–10 m / s); galloping: low-frequency, large-amplitude oscillations of icy conductors at medium to high wind speeds; and electrical harmonics: harmonics from the traction current can induce mechanical vibrations in the conductor.

[0004] However, the existing technology lacks an anti-resonance mechanism, which may cause the hanging column to be damaged due to resonance, affecting the service life of the hanging column. In order to solve the deficiency of the lack of an anti-resonance mechanism in the existing technology, this application proposes to reduce the damage of resonance to the hanging column body by using components such as support plate and drive frame, so that the drive frame can absorb and reduce the vibration of the reference plate and hanging column body by driving the extension and retraction of damping rod. Therefore, a new solution is needed to solve this problem. Utility Model Content

[0005] In view of the above-mentioned background technology, there are shortcomings and defects in the existing technology, such as the lack of an anti-resonance mechanism.

[0006] This utility model discloses an anti-resonance damping structure for an AF line suspension column, comprising a column body, a reference plate at the top of the column body, two first support plates fixedly connected to the upper surface of the reference plate, each first support plate being rotatably connected to a second support plate, a support plate above the reference plate, two drive frames on the lower surface of the support plate, two first support rods rotatably connected to both ends of each drive frame, two third support plates fixedly connected to the upper surface of the support plate, each third support plate being rotatably connected to a fourth support plate, and a fixing plate above the support plate.

[0007] Furthermore, a limiting strip is fixedly connected inside the support plate, and two damping rods are fixedly connected to the outer surface of the limiting strip. Each damping rod is fixedly connected to a corresponding drive frame.

[0008] Furthermore, the support plate has two drive bars inside, and each drive bar is rotatably connected to a second support rod at both ends.

[0009] Each of the drive frames has two limiting grooves on its outer surface, and the limiting grooves are symmetrically arranged.

[0010] Furthermore, two first limiting rods are fixedly connected to the lower surface of the support plate, and the outer surface of each first limiting rod is slidably connected to the interior of the drive frame.

[0011] Furthermore, four second limiting rods are fixedly connected to the outer surface of the limiting strip, and the other end of each second limiting rod is fixedly connected to the support plate.

[0012] Furthermore, two springs are fitted onto the outer surface of the first limiting rod, and one end of each spring is in contact with the outer surface of the support plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting up components such as a support plate and a drive frame, and through the cooperation between the support plate and the drive frame, enables the suspension column body to transmit vibration to the drive frame through the reference plate and the first support rod, so that the drive frame drives the damping rod to extend and retract, thereby reducing and absorbing the vibration received by the suspension column body, and thus achieving the anti-resonance effect of setting up a support plate and a drive frame as described in this application.

[0015] 2. This utility model, by setting up components such as a drive bar and a second support rod, and through the cooperation between the drive bar and the drive frame, enables the second support rod to drive the drive frame to slide via the drive bar, thereby causing the drive frame to drive the damping rod to extend and retract. This achieves the effect of changing the resonance direction by setting up the drive bar and the second support rod. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the upper surface structure of the drive frame of this utility model;

[0019] Figure 3 This is a schematic diagram of the lower surface structure of the support plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the upper surface structure of the support plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the fixing plate structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the structural reference plate of this utility model.

[0023] In the diagram: 1. Hanging column body; 2. Base plate; 3. First support plate; 4. Second support plate; 5. Support plate; 6. Drive frame; 7. First support rod; 8. Third support plate; 9. Fourth support plate; 10. Fixing plate; 11. Limiting strip; 12. Drive strip; 13. Second support rod; 14. Limiting groove; 15. First limiting rod; 16. Second limiting rod; 17. Spring. Detailed Implementation

[0024] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0025] Please see Figure 1-6This utility model discloses an anti-resonance damping structure for an AF line suspension column, comprising a column body 1, a reference plate 2 at the top of the column body 1, two first support plates 3 fixedly connected to the upper surface of the reference plate 2, each first support plate 3 being rotatably connected to a second support plate 4, a support plate 5 above the reference plate 2, two drive frames 6 on the lower surface of the support plate 5, two first support rods 7 rotatably connected to both ends of each drive frame 6, two third support plates 8 fixedly connected to the upper surface of the support plate 5, each third support plate 8 being rotatably connected to a fourth support plate 9, and a fixing plate 10 above the support plate 5. The main body 1 and the reference plate 2 are fixedly connected by bolts. The support plate 5 is a hollow structure. The lower surface of the support plate 5 is fixedly connected to two second support plates 4. Each third support plate 8 is fixedly connected to the upper surface of the support plate 5. Each fourth support plate 9 is fixedly connected to the lower surface of the fixed plate 10. The other end of each first support rod 7 is rotatably connected to the upper surface of the reference plate 2. The fixed plate 10 is fixed to the embedded parts of the tunnel roof wall by fixing bolts. When the main body 1 of the hanging column is vibrated, the main body 1 of the hanging column and the reference plate 2 tilt through the first support plate 3. The reference plate 2 transmits the vibration to the drive frame 6 through the first support rod 7.

[0026] The support plate 5 is internally fixedly connected to a limiting strip 11, and two damping rods are fixedly connected to the outer surface of the limiting strip 11. Each damping rod is fixedly connected to a corresponding drive frame 6. When the drive frame 6 moves, the drive frame 6 drives the damping rod to extend and retract. The damping coefficient of the damping rod must match the resonance amplitude it receives, so as to absorb the vibration received by the drive frame 6.

[0027] The support plate 5 has two drive bars 12 inside. Each drive bar 12 is rotatably connected to a second support rod 13 at both ends. The other end of each second support rod 13 is rotatably connected to the lower surface of the fixed plate 10. The drive bars 12 are symmetrically installed, and one end of each drive bar 12 is slidably connected to the outer surface of the corresponding drive frame 6.

[0028] Two limiting grooves 14 are provided on the outer surface of each drive frame 6. The limiting grooves 14 are symmetrically provided, and each limiting groove 14 corresponds to one end of a drive bar 12, so that the drive bar 12 can drive the drive frame 6 to move through the limiting grooves 14.

[0029] Two first limiting rods 15 are fixedly connected to the lower surface of the support plate 5. The outer surface of each first limiting rod 15 is slidably connected to the inside of the drive frame 6. The first limiting rods 15 are symmetrically installed and play a limiting and supporting role in the movement of the drive frame 6.

[0030] Four second limiting rods 16 are fixedly connected to the outer surface of the limiting strip 11. The other end of each second limiting rod 16 is fixedly connected to the support plate 5. Every two second limiting rods 16 correspond to one driving strip 12. Each second limiting rod 16 is slidably connected to the interior of the corresponding driving strip 12. The second limiting rods 16 limit the movement of the driving strip 12.

[0031] Two springs 17 are sleeved on the outer surface of the first limiting rod 15. One end of each spring 17 is in contact with the outer surface of the support plate 5, and the other end of each spring 17 is in contact with the outer surface of the corresponding drive frame 6. The springs 17 are used to push the drive frame 6 and other components to reset.

[0032] The implementation principle is as follows: When the main body 1 of the hanging column is subjected to resonance in the left and right direction, the main body 1 of the hanging column and the reference plate 2 tilt through the first support plate 3 and the second support plate 4. The reference plate 2 drives the two drive frames 6 to slide through the first support rod 7. The drive frames 6 drive the damping rod to extend and retract. When the main body 1 of the hanging column is subjected to resonance in the front and back direction, the support plate 5 tilts through the third support plate 8 and the fourth support plate 9. The drive bar 12 slides. The drive bar 12 drives the drive frame 6 to slide. The drive frame 6 drives the damping rod to extend and retract, thereby achieving the reduction and absorption of resonance energy.

[0033] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A resonance-resistant damping structure for an AF line suspension column, comprising a column body (1), characterized in that: A reference plate (2) is provided on the top of the main body (1) of the hanging column. Two first support plates (3) are fixedly connected to the upper surface of the reference plate (2). Each first support plate (3) is rotatably connected to a second support plate (4). A support plate (5) is provided above the reference plate (2). Two drive frames (6) are provided on the lower surface of the support plate (5). Two first support rods (7) are rotatably connected to both ends of each drive frame (6). Two third support plates (8) are fixedly connected to the upper surface of the support plate (5). Each third support plate (8) is rotatably connected to a fourth support plate (9). A fixing plate (10) is provided above the support plate (5).

2. The anti-resonance damping structure for an AF line suspension column according to claim 1, characterized in that: The support plate (5) is internally fixedly connected to a limiting strip (11), and the outer surface of the limiting strip (11) is fixedly connected to two damping rods, each of which is fixedly connected to a corresponding drive frame (6).

3. The anti-resonance damping structure for an AF line suspension column according to claim 1, characterized in that: The support plate (5) has two drive bars (12) inside, and each drive bar (12) is rotatably connected to a second support rod (13) at both ends.

4. The anti-resonance damping structure for an AF line suspension column according to claim 1, characterized in that: Two limiting grooves (14) are provided on the outer surface of each drive frame (6), and the limiting grooves (14) are symmetrically provided.

5. The anti-resonance damping structure for an AF line suspension column according to claim 1, characterized in that: The lower surface of the support plate (5) is fixedly connected to two first limiting rods (15), and the outer surface of each first limiting rod (15) is slidably connected to the inside of the drive frame (6).

6. The anti-resonance damping structure for an AF line suspension column according to claim 2, characterized in that: The outer surface of the limiting strip (11) is fixedly connected with four second limiting rods (16), and the other end of each second limiting rod (16) is fixedly connected to the support plate (5).

7. The anti-resonance damping structure for an AF line suspension column according to claim 5, characterized in that: Two springs (17) are sleeved on the outer surface of the first limiting rod (15), and one end of each spring (17) is in contact with the outer surface of the support plate (5).

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