A catenary pre-buried channel flexible ground bow ground wire structure

Abstract

The utility model relates to the field of grounding wire, concretely to a contact net pre -buried channel flexible grounding bow -shaped grounding wire structure, including steel wire rope, bow -shaped end and L -shaped end, the bow -shaped end and L -shaped end are detachable respectively connected in the both ends of steel wire rope, the bow -shaped end and L -shaped end are opposite respectively with steel wire rope rotation, the steel wire rope is flexible steel wire rope, the welding surface of bow -shaped end and L -shaped end is connected with pre -buried channel and contact net welding respectively, the bow -shaped end includes bow -shaped welding section and bow -shaped bolt section, the bow -shaped welding section is connected with pre -buried channel welding, the bow -shaped bolt section is detachable with steel wire rope connects, the utility model can make contact net and pre -buried channel grounding installation more convenient, avoid simultaneously two lining trolley to rise top after grounding welding welding slag burn or damage two lining trolley on already brushed good release agent.

Description

Technical Field

[0001] This utility model relates to the field of grounding pantographs, specifically a flexible grounding pantograph structure for pre-embedded channels in contact wires. Background Technology

[0002] In electrified railway systems, the overhead contact line, as a key piece of equipment continuously supplying power to electric locomotives, is crucial for its safe and stable operation. Because the contact line is exposed to the outdoor environment, it is susceptible to lightning strikes or operational overvoltages. If high-energy currents are not promptly conducted to the ground, it can lead to serious consequences such as insulation breakdown, damage, or even fires. Secondly, ensuring personal safety is extremely important. When the contact line equipment experiences insulation damage or its casing becomes energized, a good grounding system can quickly conduct the fault current to the ground, preventing electric shock accidents to maintenance personnel. Furthermore, improving system operational stability is also a vital function of grounding. Establishing a reliable grounding path helps maintain the potential balance of the traction power supply system, reduces electromagnetic interference, and improves the stability of the communication signal system.

[0003] However, most existing grounding wires used to connect the contact network and the pre-buried trench adopt rigid conductor structures, such as rigid copper busbars or fixed-length metal wires. While these grounding wires offer advantages such as high mechanical strength and ease of installation, they exhibit certain limitations in actual operation. Because the shape of the rigid conductor structure cannot be altered, pre-installation is required before welding for ease of installation. This means that the connection points of the rigid conductor structure need to be connected using temporary fixing structures, and welding is only performed after the connections at both ends are stable. Due to the weight of the rigid connection structure, a large welding area is required. In this situation, the complex rigid connection structure easily wastes steel, and the intermittent construction leads to wasted time. The temporary connection structure also makes it easy to forget to perform the grounding welding process, and the large-area welding of the rigid connection structure can easily burn out the release agent already applied to the secondary lining trolley.

[0004] Based on this, in order to avoid the grounding welding problem of the pre-embedded channel of the contact network, a flexible grounding bow-shaped grounding wire structure for the pre-embedded channel of the contact network is proposed. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a flexible grounding bow-shaped grounding wire structure for pre-embedded channels in contact wires.

[0006] The objective of this utility model can be achieved through the following technical solutions: This utility model discloses a flexible grounding bow-shaped grounding wire structure for a pre-embedded channel of a contact network, comprising a steel wire rope, a bow-shaped end, and an L-shaped end. The bow-shaped end and the L-shaped end are detachably connected to both ends of the steel wire rope. The bow-shaped end and the L-shaped end rotate relative to the steel wire rope. The steel wire rope is a flexible steel wire rope. The welding surfaces of the bow-shaped end and the L-shaped end are welded to the pre-embedded channel and the contact network, respectively.

[0007] Furthermore, the bow-shaped end includes a bow-shaped welded section and a bow-shaped bolt section. The bow-shaped welded section is welded to the pre-embedded channel, and the bow-shaped bolt section is detachably connected to the wire rope. The L-shaped end includes an L-shaped welded section and an L-shaped bolt section. The L-shaped welded section is welded to the contact wire, and the L-shaped bolt section is detachably connected to the wire rope.

[0008] Furthermore, it also includes two wire caps, each wire cap comprising a cap head and a connecting piece connected to the cap head. The two cap heads are respectively fitted onto both ends of the wire rope. The connecting piece is provided with a connecting hole, and the connecting holes of the two wire caps are respectively fitted onto the bow bolt section and the L-shaped bolt section.

[0009] Furthermore, each of the bow-shaped bolt segment and the L-shaped bolt segment is threaded with two sets of nuts for tightening the connecting piece, and a washer is provided between the nut and the connecting piece.

[0010] Furthermore, the middle section of the arc-shaped welding segment has a right-angle bend structure, and both ends of the middle section are bent perpendicularly to the plane of the right-angle bend structure of the middle section and toward the arc-shaped bolt segment.

[0011] Furthermore, the L-shaped welded section has a right-angle bend structure.

[0012] Furthermore, an arched connecting seat is provided between the arched welding section and the arched bolt section, and an L-shaped connecting seat is provided between the L-shaped welding section and the L-shaped bolt section. The arched connecting seat and the L-shaped connecting seat are respectively used to clamp and fasten the connecting piece with the nut.

[0013] The beneficial effects of this utility model are as follows: 1. By changing the original rigid connection structure to a flexible connection structure such as a steel wire rope, and then connecting the bow-shaped end and L-shaped end of the steel wire rope to the pre-embedded channel and the contact wire respectively, when the contact wire is contacted and slipped by the pantograph of the electric locomotive or EMU, the relative distance between the pre-embedded channel and the contact wire changes, and the steel wire rope will be stressed and bent and compressed, thus avoiding the vibration generated by the contact wire reset from causing the connection to loosen and fall off during long-term use; 2. By replacing the rigid connection structure with the flexible connection mechanism of the wire rope in this embodiment, the weight is reduced, which reduces the amount of welding. Furthermore, the absence of temporary connection structures when connecting the bow-shaped and L-shaped ends prevents the welding process from being forgotten. The bow-shaped and L-shaped ends make the grounding installation of the contact wire and the pre-embedded channel more convenient and efficient, while also preventing the welding slag from burning or damaging the release agent already applied to the secondary lining trolley after the secondary lining trolley is raised. Attached Figure Description

[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the exploded structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the structure of the grounding wire of this utility model, with both ends connected to the contact wire and the channel flat iron. Figure 4 This is a schematic diagram of the structure of the grounding wire of this utility model, with both ends connected to the contact wire and the anchor leg of the channel. Figure 5 This is a schematic diagram of the structure of the bow-shaped end of this utility model; Figure 6 This is a schematic diagram of the L-shaped end of the present invention; Explanation of reference numerals in the attached diagram: 1. Nut; 2. Washer; 3. Wire cap; 4. L-shaped end; 5. Bow-shaped end; 6. Wire rope; 7. Embedded channel; 8. Contact wire. Detailed Implementation

[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0017] like Figures 1-6 As shown, the present invention discloses a flexible grounding bow-shaped grounding wire structure for a pre-embedded channel 7 of a contact network 8, comprising a steel wire rope 6, a bow-shaped end 5, and an L-shaped end 4. The bow-shaped end 5 and the L-shaped end 4 are detachably connected to both ends of the steel wire rope 6, and the bow-shaped end 5 and the L-shaped end 4 rotate relative to the steel wire rope 6. The steel wire rope 6 is a flexible steel wire rope 6, and the welding surfaces of the bow-shaped end 5 and the L-shaped end 4 are welded to the pre-embedded channel 7 and the contact network 8, respectively. As electric locomotives or EMUs receive electrical energy through pantograph contact with the overhead contact line 8, they exert dynamic tension on the contact line 8. This mechanical action caused by train operation results in a continuous relative displacement between the contact line 8 and the tunnel structure. Under these dynamic conditions, if a traditional rigid grounding wire is still used for connection, repeated stress will cause the fastening points between the grounding wire and the connection terminal to loosen, and in severe cases, it may even cause the grounding wire to break or fall off, thereby compromising the integrity of the entire grounding system. By replacing the original rigid connection structure with a flexible connection structure using a steel wire rope 6, and then connecting the bow-shaped end 5 and L-shaped end 4 at both ends of the steel wire rope 6 to the pre-embedded channel 7 and the contact wire 8 respectively, when the contact wire 8 is contacted and slips due to the pantograph of an electric locomotive or EMU, the relative distance between the pre-embedded channel 7 and the contact wire 8 changes. This causes the steel wire rope 6 to be stressed and compressed, preventing the vibration generated by the contact wire 8 during resetting from causing loosening and detachment of the connection points during long-term use. By replacing the rigid connection structure with the flexible connection mechanism of the steel wire rope 6 in this embodiment, the weight is reduced, which reduces the amount of welding. Furthermore, the bow-shaped end 5 and L-shaped end 4 are connected without a temporary connection structure, preventing the welding process from being forgotten. The bow-shaped end 5 and L-shaped end 4 make the grounding installation of the contact wire 8 and the pre-embedded channel 7 more convenient and efficient, while also preventing the welding slag from burning or damaging the release agent already applied to the secondary lining trolley after the secondary lining trolley is raised. The pre-embedded channel 7 includes channel flat iron and channel anchor leg. The bow-shaped end 5 can be connected to the channel flat iron or the channel anchor leg according to the specific situation of the connection part to achieve the best connection effect.

[0018] Furthermore, the bow-shaped end 5 includes a bow-shaped welded section and a bow-shaped bolt section. The bow-shaped welded section is welded to the pre-embedded channel 7, and the bow-shaped bolt section is detachably connected to the wire rope 6. The L-shaped end 4 includes an L-shaped welded section and an L-shaped bolt section. The L-shaped welded section is welded to the contact wire 8, and the L-shaped bolt section is detachably connected to the wire rope 6. The bow-shaped bolt section and the L-shaped bolt section are detachably connected to both ends of the wire rope 6, which can achieve the effect of quick installation and also adjust the angle with the wire rope 6 according to the installation position and angle.

[0019] Furthermore, it also includes two wire caps 3, each consisting of a cap head and a connecting piece connected to the cap head. The bottom of the two cap heads is hollow, and the two cap heads are respectively fitted onto both ends of the wire rope 6. Since the two cap heads are made of metal, after being fitted onto the wire rope 6, the cap heads are clamped and deformed by external equipment to form a stable connection with the wire rope 6. The connecting piece is provided with a connecting hole, and the connecting holes of the two wire caps 3 are respectively fitted onto the bow bolt section and the L-shaped bolt section. Two sets of nuts 1 are threaded onto the bow-shaped bolt section and the L-shaped bolt section respectively to tighten the connecting piece. Washers 2 are provided between the nuts 1 and the connecting piece. After the connecting hole of the wire cap 3 is fitted onto the bow-shaped bolt section or the L-shaped bolt section, washers 2 are fitted onto the bow-shaped bolt section and the L-shaped bolt section respectively, and two sets of nuts 1 are screwed in, so that the wire cap 3 connected to the wire rope 6 is fixed onto the bow-shaped bolt section or the L-shaped bolt section.

[0020] Specifically, the middle section of the arc-shaped welding segment has a right-angle bend structure, and both ends of the middle section are bent perpendicularly to the plane of the right-angle bend structure of the middle section and toward the direction of the arc-shaped bolt segment; With the above structure, the connecting surface formed by any two adjacent sides of the arc-shaped welding section can be used for welding with the pre-embedded channel 7, such as... Figure 3 As shown, the arc-shaped welded section can be welded onto the channel flat iron, as follows. Figure 4 As shown, it can also be welded to the channel anchor leg.

[0021] Specifically, the L-shaped welding section has a right-angle bend structure; the outer side of the bend at the end of the L-shaped welding section is used for welding to the contact wire 8.

[0022] After the bow-shaped end 5 and the L-shaped end 4 are welded to the pre-embedded channel 7 and the contact wire 8 respectively, the wire rope 6 and the wire cap 3 are adjusted to a relaxed state by loosening the nut 1. After adjusting to a suitable angle, the two nuts 1 corresponding to each wire cap 3 are tightened to form a stable connection structure between the wire rope 6 and the bow-shaped end 5 and the L-shaped end 4. During use, when an electric locomotive or EMU pantograph passes by, even if it pulls on the contact wire 8, the wire rope 6 has a length margin and a certain degree of flexibility, which can prevent the pulling and vibration forces from being transmitted between the bow-shaped end 5 and the L-shaped end 4, thus preventing the connection from loosening or falling off.

[0023] Furthermore, an arch-shaped connecting seat is provided between the arch-shaped welded section and the arch-shaped bolt section, and an L-shaped connecting seat is provided between the L-shaped welded section and the L-shaped bolt section. The arch-shaped connecting seat and the L-shaped connecting seat are respectively used to clamp and fasten the connecting piece with the nut 1. The diameter of the bow-shaped connector is larger than the diameter of the bow-shaped welded section and the bow-shaped bolt section. The diameter of the L-shaped connector is larger than the diameter of the L-shaped welded section and the L-shaped bolt section. When the wire cap 3 is respectively fitted onto the bow-shaped bolt section and the L-shaped bolt section, one side will abut against the bow-shaped connector or the L-shaped connector, and the other side will abut against the washer 2 after the nut 1 is tightened. The wire cap 3 is tightened and clamped by the nut 1 and the bow-shaped connector or the L-shaped connector respectively.

[0024] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A flexible grounding arc-shaped grounding wire structure for pre-embedded channels in overhead contact lines, characterized in that: It includes a steel wire rope, an arched end, and an L-shaped end. The arched end and the L-shaped end are detachably connected to both ends of the steel wire rope. The arched end and the L-shaped end rotate relative to the steel wire rope. The steel wire rope is a flexible steel wire rope. The welding surfaces of the arched end and the L-shaped end are welded to the pre-embedded channel and the contact wire, respectively.

2. The flexible grounding arc-shaped grounding wire structure for pre-embedded channels in contact wires according to claim 1, characterized in that: The bow-shaped end includes a bow-shaped welded section and a bow-shaped bolt section. The bow-shaped welded section is welded to the pre-embedded channel, and the bow-shaped bolt section is detachably connected to the wire rope. The L-shaped end includes an L-shaped welded section and an L-shaped bolt section. The L-shaped welded section is welded to the contact wire, and the L-shaped bolt section is detachably connected to the wire rope.

3. The flexible grounding bow-shaped grounding wire structure for pre-embedded channels in contact wires according to claim 1, characterized in that: It also includes two wire caps, each wire cap having a cap head and a connecting piece connected to the cap head. The two cap heads are respectively fitted onto both ends of the wire rope. The connecting piece is provided with a connecting hole, and the connecting holes of the two wire caps are respectively fitted onto the bow bolt section and the L-shaped bolt section.

4. The flexible grounding arc-shaped grounding wire structure for pre-embedded channels in contact wires according to claim 1, characterized in that: Two sets of nuts are threaded onto each of the bow-shaped bolt segment and the L-shaped bolt segment to tighten the connecting piece, and a washer is provided between the nut and the connecting piece.

5. The flexible grounding arc-shaped grounding wire structure for pre-embedded channels in contact wires according to claim 1, characterized in that: The middle section of the arc-shaped welding segment has a right-angle bend structure, and both ends of the middle section are bent perpendicularly to the plane of the right-angle bend structure and toward the arc-shaped bolt segment.

6. The flexible grounding bow-shaped grounding wire structure for pre-embedded channels in contact wires according to claim 1, characterized in that: The L-shaped welded section has a right-angle bend structure.

7. The flexible grounding arc-shaped grounding wire structure for pre-embedded channels in contact wires according to claim 1, characterized in that: An arched connecting seat is provided between the arched welded section and the arched bolt section, and an L-shaped connecting seat is provided between the L-shaped welded section and the L-shaped bolt section. The arched connecting seat and the L-shaped connecting seat are respectively used to clamp and fasten the connecting piece with the nut.

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