A protection device for high-voltage cables at the ends of multiple unit trains

Abstract

The present invention discloses a protection device for high-voltage cables at the car end of a multiple unit train. The present invention relates to the technical field of cable protection equipment and includes a car body and a cable. A base plate is fixed to the top of the car body. An isolation cover is provided at the top of the cable. The edge of the isolation cover is fixed to the base plate by bolts. An installation plate is fixed to the top of the isolation cover. A turntable is rotatably connected to the top of the installation plate. A top plate is provided at the top of the turntable. An arc-shaped block is fixed to the bottom of the top plate. A wind direction plate is fixed to the top of the top plate. Support rods fixed to the turntable are fixed at the four corners of the bottom of the top plate. The structure of the present invention is simple. By providing an arc-shaped plate that causes the airflow to generate a downward pressure, a good stabilizing effect on the cable is achieved, which is beneficial to avoiding the loosening of the cable in the high-speed airflow.

Description

Technical Field

[0001] The present invention relates to the technical field of cable protection equipment, and particularly relates to a protection device for high-voltage cables at the end of a multiple unit train carbody. Background Art

[0002] The high-voltage cables on the roof of a high-speed multiple unit train are particularly important power transmission cables required for its operation, mainly responsible for transmitting the high-voltage power of the pantograph to each high-speed power unit vehicle, but are often invaded by harsh climates and usually move in an environment of high-speed airflow.

[0003] Although the existing high-voltage cables on the roof are fixed with corresponding protection devices on the surface, the selected rubber of the protection device has poor mechanical properties. In the high-speed airflow environment, the fastening force between the protection device and the carbody is likely to cause the protection rubber of the high-voltage cable on the roof to tear and disconnect under the action of the airflow. The disconnected rubber is very likely to hit the nearby pantograph on the roof, bringing great potential hazards to the normal operation of the high-speed multiple unit train and having poor stability for the cables. Therefore, we propose a protection device for high-voltage cables at the end of a multiple unit train carbody. Summary of the Invention

[0004] The present invention is provided with an arc plate that causes the airflow to generate a downward pressure, thereby achieving a good stabilizing effect on the cable and facilitating the avoidance of the cable becoming loose in the high-speed airflow.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A protection device for high-voltage cables at the end of a multiple unit train carbody includes a carbody and a cable. A base plate is fixed to the top of the carbody. An isolation cover is provided at the top of the cable. The edge of the isolation cover is fixed to the base plate by bolts. An installation plate is fixed to the top of the isolation cover. A turntable is rotatably connected to the top of the installation plate. A top plate is provided at the top of the turntable. An arc-shaped block is fixed to the bottom of the top plate. A wind direction plate is fixed to the top of the top plate. Support rods fixed to the turntable are respectively fixed at the four corners of the bottom of the top plate.

[0007] Preferably, limit blocks are adaptively clamped to the top and bottom of the cable, and the limit blocks are respectively fixed to the inner top wall of the isolation cover and the base plate.

[0008] Preferably, baffles are movably hinged to both sides of the isolation cover. A magnet strip fixed to the isolation cover is adsorbed at the bottom end of the baffle. A flexible sheet is fixed to the hinged end of the baffle.

[0009] Preferably, stabilizing columns are respectively fixed to the four corners of the bottom of the installation plate and the base plate. A central shaft column that movably penetrates through the turntable is fixed to the top of the installation plate.

[0010] Preferably, an annular groove is formed at the bottom of the turntable, and a plurality of support wheels movably installed with the mounting plate are evenly distributed inside the annular groove.

[0011] Preferably, the end of the arc-shaped block is flush with the edge of the top plate, and the arc-shaped block is a hollow block.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. In the present invention, by arranging an isolation cover on the outer side of the cable and providing an arc-shaped plate on the top of the isolation cover to generate a downward pressure on the air flow, a good stabilizing effect on the cable is achieved, which is beneficial to avoiding the loosening of the cable in the high-speed air flow. Moreover, the corresponding angle can be adjusted according to the real-time air flow, with strong adaptability and flexibility, and has good practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 FIG. is a schematic cross-sectional structure diagram of a high-voltage cable protection device at the end of a multiple unit train proposed by the present invention;

[0015] Figure 2 FIG. is a schematic structure diagram of the assembly of the end of the isolation cover and the cable of a high-voltage cable protection device at the end of a multiple unit train proposed by the present invention.

[0016] In the figure: 1 vehicle body, 2 cable, 3 base plate, 4 isolation cover, 5 bolt, 6 mounting plate, 7 turntable, 8 top plate, 9 arc-shaped block, 10 wind direction plate, 11 limit block, 12 baffle, 13 magnet bar, 14 flexible sheet, 15 stabilizing column, 16 central shaft column, 17 support rod, 18 annular groove, 19 support wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] Referring to Figure 1-2 , a high-voltage cable protection device at the end of a multiple unit train includes a vehicle body 1 and a cable 2. A base plate 3 is fixed on the top of the vehicle body 1. An isolation cover 4 is provided on the top of the cable 2. The edge of the isolation cover 4 is fixed to the base plate 3 through bolts 5. A mounting plate 6 is fixed on the top of the isolation cover 4. A turntable 7 is rotatably connected to the top of the mounting plate 6. A top plate 8 is provided on the top of the turntable 7. An arc-shaped block 9 is fixed to the bottom of the top plate 8. A wind direction plate 10 is fixed to the top of the top plate 8. The wind direction plate 10 and the arc-shaped block 9 are perpendicular to each other. Support rods 17 fixed to the turntable 7 are provided at the four corners of the bottom of the top plate 8.

[0019] Among them, the top and bottom of the cable 2 are respectively fitted and clamped with limit blocks 11, and the limit blocks 11 are fixed to the inner top wall of the isolation cover 4 and the base plate 3 respectively, so as to play a role in stabilizing and limiting the cable 2.

[0020] Among them, baffles 12 are movably hinged to both sides of the isolation cover 4. A magnet strip 13 fixed to the isolation cover 4 is adsorbed at the bottom end of the baffle 12. A flexible sheet 14 is fixed to the hinged end of the baffle 12. The flexible sheet 14 is an elastic rubber sheet, which plays a role in sealing the gap between the baffle 12 and the isolation cover 4, so as to isolate the water flow outside the isolation cover 4, which is beneficial to avoid the bolts 5 screwed to the isolation cover 4 from being covered by rain and snow, and plays a certain protective role for the bolts 5.

[0021] Among them, the four corners at the bottom of the mounting plate 6 are fixed to the base plate 3 through stabilizing columns 15. A central shaft column 16 that movably penetrates through the center of the turntable 7 is fixed to the top of the mounting plate 6, so as to facilitate the rotation of the turntable 7. A limit block for restricting the turntable 7 in the vertical direction is fixed to the top of the central shaft column 16.

[0022] Among them, an annular groove 18 is formed at the bottom of the turntable 7, and a plurality of support wheels 19 movably installed on the mounting plate 6 are evenly distributed inside the annular groove 18, so as to reduce the friction force when the turntable 7 rotates with the mounting plate 6.

[0023] Among them, the end of the arc-shaped block 9 is flush with the edge of the top plate 8. The arc-shaped block 9 is a hollow block, so as to reduce the weight of the arc-shaped block 9 and facilitate the installation and fixation of the arc-shaped block 9.

[0024] Working principle: During the movement of the vehicle body 1, the arc-shaped block 9 is always kept perpendicular to the wind direction through the wind vane 10. At this time, according to Bernoulli's principle, the arc-shaped block 9 makes the air flow generate a downward pressure, which is beneficial to avoid the cable 2 from becoming loose in the high-speed air flow and is beneficial to maintaining the stability of the cable 2. When the moving direction of the vehicle body 1 changes, at this time, the wind vane 10 will generate a horizontal driving force on the top plate 8 according to the wind direction. At this time, under the action of the support rod 17 and the turntable 7, the arc-shaped block 9 is made to be perpendicular to the wind direction again, with good adaptability and flexibility.

[0025] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A protection device for high-voltage cables at the end of a multiple unit train, comprising a vehicle body (1) and a cable (2). It is characterized in that a base plate (3) is fixed to the top of the vehicle body (1), an isolation cover (4) is arranged at the top of the cable (2), the edge of the isolation cover (4) is fixed to the base plate (3) by bolts (5), a mounting plate (6) is fixed to the top of the isolation cover (4), a turntable (7) is rotatably connected to the top of the mounting plate (6), a top plate (8) is arranged at the top of the turntable (7), an arc-shaped block (9) is fixed to the bottom of the top plate (8), a wind direction plate (10) is fixed to the top of the top plate (8), and support rods (17) fixed to the turntable (7) are fixed at the four corners of the bottom of the top plate (8); limiting blocks (11) are adaptively clamped to the top and bottom of the cable (2), and the limiting blocks (11) are fixed to the inner top wall of the isolation cover (4) and the base plate (3) respectively; the end of the arc-shaped block (9) is flush with the edge of the top plate (8), and the arc-shaped block (9) is a hollow block; During the running of the vehicle body, the arc-shaped block is always kept perpendicular to the wind direction by the wind direction plate. At this time, according to Bernoulli's principle, the arc-shaped block causes the air flow to generate a downward pressure; when the running direction of the vehicle body (1) changes, at this time, the wind direction plate (10) generates a horizontal driving force on the top plate (8) according to the wind direction. At this time, under the action of the support rod (17) and the turntable (7), the arc-shaped block (9) is made to be perpendicular to the wind direction again.

2. A protection device for high-voltage cables at the end of a multiple unit train according to claim 1, It is characterized in that baffles (12) are movably hinged to both sides of the isolation cover (4), a magnet strip (13) fixed to the isolation cover (4) is adsorbed at the bottom end of the baffle (12), and a flexible sheet (14) is fixed to the hinged end of the baffle (12).

3. A protection device for high-voltage cables at the end of a multiple unit train according to claim 1, It is characterized in that stabilizing columns (15) are fixed to the four corners of the bottom of the mounting plate (6) and the base plate (3), and a central shaft column (16) that movably penetrates through the turntable (7) is fixed to the top of the mounting plate (6).

4. A protection device for high-voltage cables at the end of a multiple unit train according to claim 1, It is characterized in that an annular groove (18) is formed at the bottom of the turntable (7), and a plurality of support wheels (19) movably installed on the mounting plate (6) are evenly distributed inside the annular groove (18).

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