Overhead line system anti-galloping device

Abstract

The utility model discloses an anti-galloping device for an overhead line system, which relates to the technical field of railways and comprises a composite insulator, the top end of the composite insulator is rotatably connected with a mounting frame, and the mounting frame is provided with a wire clamp used for being connected with a positive feeder line of the overhead line system of an electrified railway; the connecting rod is connected to the bottom end of the composite insulator and extends along the bottom end of the composite insulator; the mounting seat is fixed on the ground or the side wall along the electrified railway, an opening for the connecting rod to penetrate through is formed in the mounting seat, and a limiting piece for limiting the connecting rod in the opening is mounted on the connecting rod. According to the utility model, the positive feeder line in the electrified railway contact network can be restrained and fixed, the galloping amplitude of the positive feeder line is limited, the positive feeder line is prevented from galloping violently, and the safe operation of a traction power supply system is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of railways, in particular to a contact network anti-dancing device. Background Art

[0002] In high-speed railway traction power supply systems, autotransformers are the primary method of power supply. In this method, the positive feeder is typically suspended on the field side of a support via insulators. The positive feeder and the protective wire beneath it serve as additional conductors for the overhead contact network, playing a crucial role in the overall power supply system.

[0003] Neither the positive feeder nor the protection line has any compensation device, which makes them lack the ability to self-regulate and protect themselves when facing external environmental interference.

[0004] In natural environments, especially during strong winds, the positive feeder and protection lines are susceptible to strong winds and can vibrate due to the lack of compensation devices. The vibrating trajectory is elliptical in the cross section perpendicular to the conductor axis.

[0005] Galloping can cause severe wear between conductors and fittings. As wear increases, discharges between conductors become more likely. This is because wear can damage the insulation layer on the conductor surface or change the distance between conductors, resulting in uneven electric field distribution and causing discharges. Severe wear can also lead to line drops. Both line drops and discharges can have serious consequences for the safe operation of electrified railways, such as power outages and signal transmission failures, disrupting the normal operation of railway transportation and even endangering the lives of passengers and the integrity of railway facilities.

[0006] In view of this, this application is hereby filed. Utility Model Content

[0007] The purpose of the present invention is to provide a contact network anti-dancing device to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the utility model provides a contact network anti-dancing device, comprising:

[0009] A composite insulator, the top of which is rotatably connected to a mounting frame, wherein the mounting frame is provided with a wire clamp for connecting to a positive feeder of an electrified railway contact network;

[0010] a connecting rod connected to the bottom end of the composite insulator and extending along the bottom end of the composite insulator;

[0011] A mounting base is fixed on the ground or on a side wall along an electrified railway line, and is provided with an opening for a connecting rod to pass through, and a limiting member is installed on the connecting rod for limiting the connecting rod in the opening;

[0012] The damping device includes a rotating shaft and a torsion spring arranged between the mounting frame and the composite insulator. One end of the torsion spring is fixedly connected to the rotating shaft, and the other end is fixedly connected to the mounting frame. It is used to provide restoring force and damping when the composite insulator is displaced due to external interference.

[0013] Furthermore, the top end of the composite insulator is connected to a top hardware fitting, the end of the top hardware fitting away from the composite insulator is fixedly connected to a connecting rod, the composite insulator is connected to the mounting frame through the top hardware fitting and the connecting rod, the bottom end of the composite insulator is connected to a bottom hardware fitting, and the composite insulator is connected to the connecting rod through the bottom hardware fitting.

[0014] Furthermore, a rotating shaft is fixedly installed on the connecting rod, the mounting bracket is rotatably connected to the rotating shaft, the end of the rotating shaft is fixedly connected to a transmission gear, and a torsion spring is also sleeved on the rotating shaft, one end of the torsion spring is fixedly connected to the inner wall of the transmission gear, and the other end of the torsion spring is fixedly connected to the outer wall of the mounting bracket.

[0015] Furthermore, a sliding rod is slidably installed on the mounting frame, the bottom end of the sliding rod is fixedly connected to a sliding seat, the sliding seat is fitted with the inner wall of the mounting frame, the wire clamp is installed on the top end of the sliding rod, and a buffer spring is also sleeved on the sliding rod, the bottom end of the buffer spring is fixedly connected to the top surface of the sliding seat, and the top end of the buffer spring is fixedly connected to the inner top wall of the mounting frame.

[0016] Furthermore, damping rods are symmetrically mounted on the top surface of the slide, and the two damping rods are symmetrically arranged on both sides of the slide, and one end of the damping rod away from the slide is fixedly connected to the inner top wall of the mounting frame.

[0017] Furthermore, a transmission rack is installed on the side wall of the slide seat, and the transmission rack is meshed with the transmission gear.

[0018] Furthermore, the limiting member includes a first nut and a second nut, both of which are threadedly connected to the connecting rod, wherein the first nut is located on one side of the mounting seat and the second nut is located on the other side of the mounting seat.

[0019] Furthermore, the connecting rod is provided with an external thread, and the inner walls of the first nut and the second nut are both provided with an internal thread that matches the external thread.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The utility model can restrain and fix the positive feeder in the electrified railway contact network through the cooperation of the composite insulator, the connecting rod mounting frame and the wire clamp, limit the dancing amplitude of the positive feeder, prevent the positive feeder from dancing violently, and ensure the safe operation of the traction power supply system.

[0022] 2. According to the utility model, when the positive feeder line swings and dances, the positive feeder line is restored to stability under the action of the torsion spring. By arranging the rotating shaft, the transmission gear and the torsion spring, the dance of the positive feeder line is effectively eliminated, thereby ensuring the normal use of the positive feeder line. At the same time, the wire clamp will drive the slide rod to move, and the slide rod will drive the slide seat to slide inside the mounting frame. At the same time, the damping rod and the buffer spring can cooperate to buffer the movement of the slide rod, thereby improving the effect of preventing the positive feeder from dancing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is a front view structural diagram of the utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure between the mounting frame and the wire clamp in the present utility model;

[0026] Figure 4 It is a structural schematic diagram of the mounting frame in the utility model.

[0027] In the figure: 1. Composite insulator; 2. Bottom fitting; 3. Top fitting; 4. Connecting rod; 5. Mounting seat; 6. First nut; 7. Second nut; 8. Connecting rod; 9. Mounting frame; 10. Wire clamp; 11. Rotating shaft; 12. Sliding rod; 13. Sliding seat; 14. Damping rod; 15. Buffer spring; 16. Transmission gear; 17. Torsion spring; 18. Transmission rack. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1-4 The utility model provides a technical solution: a contact network anti-dancing device, including

[0030] A composite insulator 1, the top of which is rotatably connected to a mounting frame 9, on which a clamp 10 for connecting to a positive feeder of an electrified railway contact network is provided;

[0031] A connecting rod 4 is connected to the bottom end of the composite insulator 1 and extends along the bottom end of the composite insulator 1;

[0032] The mounting base 5 is fixed to the ground or a side wall along an electrified railway line. It has an opening for the connecting rod 4 to pass through. The connecting rod 4 is installed with a limiter for limiting the connecting rod 4 in the opening. The top of the composite insulator 1 is connected to the top hardware 3. The end of the top hardware 3 away from the composite insulator 1 is fixedly connected to the connecting rod 8. The composite insulator 1 is connected to the mounting frame 9 via the top hardware 3 and the connecting rod 8. The bottom of the composite insulator 1 is connected to the bottom hardware 2. The composite insulator 1 is connected to the connecting rod 4 via the bottom hardware 2. The damping device includes a rotating shaft and a torsion spring disposed between the mounting frame and the composite insulator. One end of the torsion spring is fixedly connected to the rotating shaft and the other end is fixedly connected to the mounting frame. The damping device is used to provide restoring force and damping when the composite insulator is displaced due to external interference, thereby reducing conductor galloping and preventing wear between the conductor and the hardware, as well as discharge or line drop accidents caused by this.

[0033] Specifically, the cooperation of the composite insulator 1, the connecting rod 4 mounting frame 9 and the wire clamp 10 can restrain and fix the positive feeder in the electrified railway contact network, limit the dancing amplitude of the positive feeder, prevent the positive feeder from dancing violently, and ensure the safe operation of the traction power supply system.

[0034] See Figure 3 A rotating shaft 11 is fixedly mounted on the connecting rod 8, and the mounting frame 9 is rotatably connected to the rotating shaft 11. The end of the rotating shaft 11 is fixedly connected to a transmission gear 16. A torsion spring 17 is also sleeved on the rotating shaft 11. One end of the torsion spring 17 is fixedly connected to the inner wall of the transmission gear 16, and the other end of the torsion spring 17 is fixedly connected to the outer wall of the mounting frame 9.

[0035] Specifically, when the positive feed line swings and dances, the positive feed line is restored to stability under the action of the elastic force of the torsion spring 17. By setting the rotating shaft 11, the transmission gear 16 and the torsion spring 17 together, the dancing of the positive feed line is effectively eliminated, ensuring the normal use of the positive feed line.

[0036] See Figure 3 A slide rod 12 is slidably installed on the mounting frame 9, and a slide seat 13 is fixedly connected to the bottom end of the slide rod 12. The slide seat 13 fits the inner wall of the mounting frame 9, and the wire clamp 10 is installed on the top of the slide rod 12. A buffer spring 15 is also sleeved on the slide rod 12. The bottom end of the buffer spring 15 is fixedly connected to the top surface of the slide seat 13, and the top of the buffer spring 15 is fixedly connected to the inner top wall of the mounting frame 9. A damping rod 14 is also symmetrically installed on the top surface of the slide seat 13. The two damping rods 14 are symmetrically arranged on both sides of the slide rod 12, and the end of the damping rod 14 away from the slide seat 13 is fixedly connected to the inner top wall of the mounting frame 9.

[0037] Specifically, the wire clamp 10 can be connected and fixed to the positive feeder. When the positive feeder dances, the wire clamp 10 will drive the slide rod 12 to move, and the slide rod 12 will drive the slide seat 13 to slide inside the mounting frame 9. At the same time, the damping rod 14 and the buffer spring 15 can cooperate to buffer the movement of the slide rod 12, thereby improving the effect of preventing the positive feeder from dancing.

[0038] See Figure 1-Figure 3 A transmission rack 18 is also installed on the side wall of the slide 13, and the transmission rack 18 is meshed with the transmission gear 16.

[0039] Specifically, when the wire clamp 10 is subjected to force and shakes, the wire clamp 10 transmits the shaking force to the slide 13 through the slide rod 12, and the slide 13 moves along the inside of the mounting frame 9. While the slide 13 moves, it drives the transmission rack 18 to move synchronously. The movement of the transmission rack 18 can drive the transmission gear 16 to rotate, and the rotation of the transmission gear 16 drives the rotating shaft 11 to rotate, causing the torsion spring 17 to twist and store force. The torsion spring 17 stores and releases force, which can assist in buffering the wire clamp 10.

[0040] See Figure 2 The limiting member includes a first nut 6 and a second nut 7, which are both threadedly connected to the connecting rod 4, wherein the first nut 6 is located on one side of the mounting seat 5, and the second nut 7 is located on the other side of the mounting seat 5. The connecting rod 4 is provided with an external thread, and the inner walls of the first nut 6 and the second nut 7 are both provided with an internal thread that matches the external thread.

[0041] Specifically, by rotating the first nut 6 and the second nut 7, they can be threadedly displaced along the connecting rod 4. By adjusting the positions of the first nut 6 and the second nut 7 on the connecting rod 4, the effective length of the connecting rod 4 passing through the mounting seat 5 can be adjusted, and then the distance between the positive feeder and the ground or side wall can be adjusted, thereby changing the restraining force on the positive feeder, making the anti-dancing device suitable for positive feeders with different overhang amounts and areas with different wind levels, and has a wide range of applications.

[0042] Working Principle: When the positive feeder is subjected to external disturbances (such as wind or airflow from a passing train) and experiences vibration, the force of the vibration is transmitted to the mounting frame and its connected composite insulator via a wire clamp. A sliding rod attached to the mounting frame drives a slide within the mounting frame. The sliding of the slide, through the meshing of a transmission rack mounted on its side wall with a transmission gear, transmits the force generated by the wire clamp's vibration to the transmission gear, which in turn transmits it to the rotating shaft. The rotating shaft is then connected to a torsion spring. As the rotating shaft rotates, the torsion spring twists, accumulating elastic potential energy.

[0043] When the dancing force of the positive feeder gradually disappears or weakens, the elastic restoring force of the torsion spring begins to be released, and the rotating shaft rotates in the reverse direction under the action of the torsion spring, driving the transmission gear and transmission rack to move in the reverse direction, and finally restoring the slide rod and wire clamp to their original positions, thereby restoring the positive feeder to a stable state.

[0044] To further enhance the buffering effect, a buffer spring and damping rod are designed into the device. These provide additional damping and cushioning during the sliding motion of the rod and the carriage, preventing violent swings in the positive feeder. Furthermore, the connecting rod is secured within the opening of the mounting base by retaining members (a first nut and a second nut). This retaining design prevents excessive displacement of the connecting rod, thereby maintaining system stability.

[0045] In general, the device provides an effective damping and restoring force system through the interaction of the rotating shaft, torsion spring, transmission gear, slide rod, slide seat and buffer structure. When the positive feeder is subject to external interference, it can quickly reduce the swing amplitude, maintain the stability of the positive feeder, avoid wear, discharge or disconnection accidents caused by violent swings, and ensure the safe operation of the railway power supply system.

[0046] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. The contact network anti-dancing device is characterized by: include A composite insulator (1) having a top end rotatably connected to a mounting frame (9), wherein the mounting frame (9) is provided with a wire clamp (10) for connecting to a positive feeder of an electrified railway contact network; A connecting rod (4) connected to the bottom end of the composite insulator (1) and extending along the bottom end of the composite insulator (1); A mounting seat (5) is fixed on the ground or on a side wall along an electrified railway line, and is provided with an opening for the connecting rod (4) to pass through, wherein the connecting rod (4) is provided with a limiting member for limiting the connecting rod (4) in the opening; The damping device comprises a rotating shaft (11) and a torsion spring (17) arranged between a mounting frame (9) and a composite insulator (1), wherein one end of the torsion spring (17) is fixedly connected to the rotating shaft (11) and the other end is fixedly connected to the mounting frame (9), and is used to provide a restoring force and a damping effect when the composite insulator (1) is displaced due to external interference.

2. The contact network anti-dancing device according to claim 1, characterized in that: The top end of the composite insulator (1) is connected to a top fitting (3), an end of the top fitting (3) away from the composite insulator (1) is fixedly connected to a connecting rod (8), the composite insulator (1) is connected to the mounting frame (9) via the top fitting (3) and the connecting rod (8), the bottom end of the composite insulator (1) is connected to a bottom fitting (2), and the composite insulator (1) is connected to the connecting rod (4) via the bottom fitting (2).

3. The contact network anti-dancing device according to claim 2, characterized in that: A rotating shaft (11) is fixedly mounted on the connecting rod (8), the mounting frame (9) is rotatably connected to the rotating shaft (11), the end of the rotating shaft (11) is fixedly connected to a transmission gear (16), and a torsion spring (17) is also sleeved on the rotating shaft (11), one end of the torsion spring (17) is fixedly connected to the inner wall of the transmission gear (16), and the other end of the torsion spring (17) is fixedly connected to the outer wall of the mounting frame (9).

4. The contact network anti-dancing device according to claim 3, characterized in that: A slide rod (12) is slidably mounted on the mounting frame (9), and a slide seat (13) is fixedly connected to the bottom end of the slide rod (12). The slide seat (13) is in contact with the inner wall of the mounting frame (9). The wire clamp (10) is mounted on the top end of the slide rod (12). A buffer spring (15) is also sleeved on the slide rod (12). The bottom end of the buffer spring (15) is fixedly connected to the top surface of the slide seat (13), and the top end of the buffer spring (15) is fixedly connected to the inner top wall of the mounting frame (9).

5. The contact network anti-dancing device according to claim 4, characterized in that: The top surface of the slide (13) is also symmetrically mounted with damping rods (14), the two damping rods (14) being symmetrically arranged on both sides of the slide (12), and one end of the damping rod (14) away from the slide (13) is fixedly connected to the inner top wall of the mounting frame (9).

6. The contact network anti-dancing device according to claim 4, characterized in that: A transmission rack (18) is also mounted on the side wall of the slide seat (13), and the transmission rack (18) is meshedly connected with the transmission gear (16).

7. The contact network anti-dancing device according to claim 1, characterized in that: The limiting member comprises a first nut (6) and a second nut (7), both of which are threadedly connected to the connecting rod (4), wherein the first nut (6) is located on one side of the mounting seat (5) and the second nut (7) is located on the other side of the mounting seat (5).

8. The contact network anti-dancing device according to claim 7, characterized in that: The connecting rod (4) is provided with an external thread, and the inner walls of the first nut (6) and the second nut (7) are both provided with an internal thread that matches the external thread.

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