A method and device for fixing a railway through-ground wire

Abstract

The present application relates to a method and a device for fixing a railway through-ground wire, and relates to the technical field of railway through-ground wires. By installing a trough for burying the through-ground wire on the crossbeam of the cable channel in the railway bridge, the through-ground wire can be better buried in the railway bridge whose cable channel is in the form of a steel structure; the through-ground wire realizes electrical connection with the equipment along the railway through the grounding copper bus installed on the side of the trough; in addition, since the trough is filled with a shielding filler and the shielding filler is wrapped around the through-ground wire, the through-ground wire can be prevented from affecting nearby cables and related equipment due to temperature increase or electromagnetic interference when current passes through it, thereby providing a guarantee for the normal operation of the facilities along the railway. Therefore, the present application can not only enable the through-ground wire to be buried in the railway bridge whose cable channel is in the form of a steel structure, but also reduce the possibility of cable insulation being damaged.

Description

Technical Field

[0001] The present application relates to the technical field of railway through-ground wires, and in particular to a method and a device for fixing railway through-ground wires. Background Art

[0002] A through-ground wire is a bare copper wire laid along the railway line for grounding all metal equipment. The core of the through-ground wire is a number of round metal wires twisted together in layers or concentrically. Since all equipment along the railway line is connected to the same through-ground wire, the grounding potential of all wiring equipment can be kept balanced at any time.

[0003] At present, the structure of railway bridges is complex, and there are many types of grounding methods for different bridge sections, but they all need to ensure that the through-ground wire has excellent shielding performance and low resistivity. For bridge beams or their ancillary structures cast in concrete, the through-ground wire can be pre-buried in the concrete structure, and the connection position is reserved at a certain distance, which can meet the requirements of the through-ground wire function and performance.

[0004] For railway bridges with steel cable channels, there is no place to bury the through-ground wires, so the through-ground wires cannot be pre-buried and can only be laid bare. However, for railway bridges, when the current passes through the bare through-ground wires, the insulation of the cables near the through-ground wires is damaged due to temperature rise or electromagnetic interference, and the equipment cannot work normally, posing a safety hazard. Summary of the invention

[0005] The embodiments of the present application provide a method and a device for fixing a railway through-ground wire to solve the problem in the related art that a railway bridge with a steel structure as a cable channel lacks a location for burying the through-ground wire, and that the insulation of the cable near the through-ground wire is damaged due to the laying of the through-ground wire in a bare laying manner.

[0006] In a first aspect, a method for fixing a railway through-ground wire is provided, comprising the following steps:

[0007] A trough body is installed on the crossbeam of the cable channel, and a grounding copper bar is installed on the side wall of the cable channel, the grounding copper bar is located on the side of the trough body, and the grounding copper bar is electrically connected to the working equipment along the railway line;

[0008] Placing a through grounding wire in the slot, filling the slot with a shielding filler, and electrically connecting the through grounding wire to the grounding copper busbar;

[0009] A tank cover is installed on the top of the tank body.

[0010] In some embodiments, fixing the trough body on the crossbeam of the cable channel includes the following steps: installing two first angle steels at the bottom of the trough body, and the trough body is fixedly connected to the crossbeam through the first angle steels.

[0011] The fixing method further comprises the following steps: after installing a slot cover on the top of the slot body, fixing a second angle steel on the top of the slot cover, and welding the second angle steel to the first angle steel.

[0012] An inclination angle is provided between the trough body and the cross beam.

[0013] The fixing method further comprises the following steps: after the slot cover is installed on the top of the slot body, a clamping hoop is detachably fixed across the slot body.

[0014] In a second aspect, a device for fixing a railway through-ground wire is provided for implementing the above-mentioned method for fixing the railway through-ground wire, comprising:

[0015] A trough body, which is arranged on the crossbeam of the cable channel and is used to accommodate the through ground wire;

[0016] A shielding filler, which is arranged in the slot and wrapped around the through grounding wire;

[0017] A tank cover connected to the top of the tank body;

[0018] A grounding copper busbar is arranged on the side wall of the cable channel and located on the side of the trough body, and is used to electrically connect to the through-ground wire and working equipment along the railway respectively.

[0019] In some embodiments, the fixing device further includes two first angle steels, and the trough body is fixed to the crossbeam via the two first angle steels.

[0020] The fixing device also includes a second angle steel, one end of which is fixedly connected to the top of the slot cover, and the other end of which is fixedly connected to the first angle steel.

[0021] An inclination angle is provided between the trough body and the cross beam.

[0022] The fixing device also includes a hoop member, and the hoop member is detachably fixed across the trough body.

[0023] The beneficial effects brought about by the technical solution provided in this application include: the through ground wire can be buried in a railway bridge with a steel structure cable channel, and the possibility of cable insulation being damaged can be reduced, further ensuring that the equipment along the railway can be in normal working condition.

[0024] The embodiment of the present application provides a method and a device for fixing a railway through-ground wire. A trough for burying the through-ground wire is installed on the crossbeam of the cable channel in the railway bridge, so that the through-ground wire can be buried in the railway bridge with the cable channel in the form of a steel structure; the through-ground wire realizes electrical connection with the equipment along the railway through the grounding copper bus installed on the side of the trough; in addition, since the trough is filled with a shielding filler and the shielding filler is wrapped around the through-ground wire, the through-ground wire can be prevented from affecting nearby cables and related equipment due to temperature increase or electromagnetic interference when current passes through it, thereby providing a guarantee for the normal operation of the facilities along the railway. Therefore, the present application can not only enable the through-ground wire to be buried in the railway bridge with the cable channel in the form of a steel structure, but also reduce the possibility of cable insulation being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 A schematic diagram of a flow chart of a method for fixing a railway through-ground wire provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a fixing device for a railway through-ground wire provided in an embodiment of the present application;

[0028] Figure 3 This is an enlarged structural schematic diagram of the fixing device provided in an embodiment of the present application.

[0029] In the figure: 1- trough body, 2- first angle steel, 3- shielding filler, 4- grounding copper bar, 5- through grounding wire, 6- trough cover, 7- cable channel, 8- crossbeam, 9- second angle steel. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The embodiments of the present application provide a method and a device for fixing a railway through-ground wire, which can solve the problem in the related art that a railway bridge with a steel structure as the cable channel lacks a location for burying the through-ground wire, and the problem that the insulation of the cable near the through-ground wire is damaged due to the laying of the through-ground wire in a bare laying manner.

[0032] See also Figure 1 As shown, an embodiment of the present application provides a method for fixing a railway through-ground wire, which includes the following steps:

[0033] S1: Install the trough body 1 on the crossbeam 8 of the cable channel 7, install the grounding copper bar 4 on the side wall of the cable channel 7, the grounding copper bar 4 is located on the side of the trough body 1, and the grounding copper bar 4 is electrically connected to the working equipment along the railway.

[0034] S2: placing the through ground wire 5 in the slot body 1 , filling the slot body 1 with a shielding filler 3 , and electrically connecting the through ground wire 5 to the ground copper bus 4 .

[0035] S3: Install the tank cover 6 on the top of the tank body 1.

[0036] Preferably, fixing the trough body 1 on the cross beam 8 of the cable channel 7 comprises the following steps: installing two first angle steels 2 at the bottom of the trough body 1, and the trough body 1 is fixedly connected to the cross beam 8 through the first angle steels 2, that is, one of the first angle steels 2 is welded to the trough body 1 and the cross beam 8, respectively. Preferably, the connection area between the first angle steel 2 and the trough body 1 should be greater than or equal to 70% of the area of ​​the first angle steel 2, which can further ensure the stability of the first angle steel 2; one end of the other first angle steel 2 is welded to the trough body 1, and the other end is screwed to the cross beam 8. The double fixing method of screwing the trough body 1 to the cross beam 8 and then welding the first angle steel 2 can further enhance the connection reliability between the trough body 1 and the cross beam 8.

[0037] Preferably, the fixing method also includes the following steps: after installing the trough cover 6 on the top of the trough body 1, fixing the second angle steel 9 on the top of the trough cover 6, and welding the second angle steel 9 to the first angle steel 2, which can further enhance the connection reliability between the trough cover 6 and the trough body 1.

[0038] Preferably, an inclination angle is provided between the trough body 1 and the cross beam 8, and the inclination angle is preferably between 0° and 5°. The inclination angle is used for drainage to prevent external water from staying on the trough body 1 and avoid the risk of electric shock.

[0039] Preferably, the method for fixing the railway through-ground wire also includes the following steps: after installing the slot cover 6 on the top of the slot body 1, the clamping hoop is detachably fixed across the slot body 1 to fix the slot body 1 and the slot cover 6, which can further improve the stability of the slot body 1.

[0040] Specifically, two first angle steels 2 for fixing are welded at the bottom of the trough body 1, and fixed steel plates are welded at intervals on the crossbeam 8 of the cable channel 7 under the railway maintenance walkway, and the fixed steel plate is used to connect with one of the first angle steels 2. Mounting holes are provided on the first angle steel 2 and the steel plate, and bolts are passed through the mounting holes to fix the trough body 1 and the crossbeam 8 together, and the other first angle steel 2 is welded to the trough body 1 and the crossbeam 8 respectively; half of the shielding filler 3 is poured into the trough body 1, and then the through-grounding wire 5 is placed in the middle of the trough body 1, and then the other half of the shielding filler 3 is poured; the grounding copper busbar 4 is installed on the side wall of the cable channel 7, and the grounding copper busbar 4 is electrically connected to the through-grounding wire 5 and the working equipment along the railway respectively; the second angle steel 9 is welded on the trough cover 6 at intervals, and after the trough cover 6 is covered, the second angle steel 9 on the trough cover 6 and the first angle steel 2 on the trough body 1 are welded to complete the fixation and installation of the through-grounding wire 5.

[0041] See also Figure 2 and Figure 3 As shown, an embodiment of the present application also provides a fixing device for a railway through-ground wire, which is used to provide an installation position for burying a through-ground wire 5 in a railway bridge (especially a railway bridge with a cable channel 7 in the form of a steel structure). The fixing device includes a trough body 1, a shielding filler 3, a grounding copper busbar 4 and a trough cover 6. The trough body 1 is installed on the crossbeam 8 of the cable channel 7 in the railway maintenance walkway. The trough body 1 is used to accommodate the through-grounding wire 5. The shape and installation method of the trough body 1 can be changed accordingly according to the shape of the bridge. Preferably, the shape of the trough body 1 is U-shaped, which is conducive to the smooth connection between the bottom of the trough body 1 and the first angle steel 2, avoiding stress concentration and enhancing the stability of the connection; the grounding copper busbar 4 is installed on the side wall of the cable channel 7 in the railway maintenance walkway and is located on the side of the trough body 1, which is used to electrically connect with the through-grounding wire 5 and the working equipment along the railway respectively; the shielding filler 3 is arranged in the trough body 1 and wrapped around the through-grounding wire 5, which can avoid the through-grounding wire from affecting nearby cables and related equipment due to temperature increase or electromagnetic interference when current passes through it, thereby providing a guarantee for the normal operation of facilities along the railway; the trough cover 6 is screwed to the top of the trough body 1. The method of burying the through-ground wire 5 and its shielding in the present application can be changed according to the bridge structure and needs, which is convenient for installation and maintenance, and can also meet the use conditions of the through-ground wire 5. In addition, the fixing device is not limited to laying the through-ground wire 5, but can also be used for laying cables, which can achieve further protection of the cables.

[0042] Preferably, two first angle steels 2 are installed at the bottom of the trough body 1, and the trough body 1 is fixedly connected to the crossbeam 8 through the first angle steels 2, that is, one of the first angle steels 2 is welded to the trough body 1 and the crossbeam 8, respectively. Preferably, the connection area between the first angle steel 2 and the trough body 1 should be greater than or equal to 70% of the area of ​​the first angle steel 2, which can further ensure the stability of the first angle steel 2; one end of the other first angle steel 2 is welded to the trough body 1, and the other end is screwed to the crossbeam 8. High-speed vehicles will cause the track to vibrate, and the vibration may cause the trough body 1 to fall off. The double fixing method of the trough body 1 in which the first angle steel 2 is screwed to the crossbeam 8 and then welded further strengthens the connection reliability between the trough body 1 and the crossbeam 8, which can reduce the possibility of the trough body 1 falling off.

[0043] Preferably, the top of the trough cover 6 is fixedly connected with a second angle steel 9, and the second angle steel 9 is welded to the first angle steel 2. The vibration generated by the high-speed driving of the vehicle may also cause the screw connection between the trough cover 6 and the trough body 1 to loosen. The trough cover 6 is fixed to the first angle steel 2 on the trough body 1 by the second angle steel 9, which can further enhance the reliability of the connection between the trough cover 6 and the trough body 1.

[0044] Preferably, an inclination angle is provided between the trough body 1 and the cross beam 8, and the inclination angle is preferably between 0° and 5°. The inclination angle is used for drainage to prevent external water from staying on the fixing device to avoid the risk of electric shock.

[0045] Preferably, there are multiple slot bodies 1, and gaps are provided between the multiple slot bodies 1, and the gaps are preferably 2mm-10mm. The setting of the gaps can prevent the slot bodies 1 from colliding and squeezing each other when the rail vibrates, and can ensure that only a very small area of ​​the through-ground wire 5 is exposed outside the slot body 1, thereby reducing the possibility of criminals stealing the through-ground wire 5.

[0046] Preferably, the fixing device further comprises a hoop member, which is detachably fixed across the trough body 1 to fix the trough body 1 and the trough cover 6 , thereby further improving the stability of the trough body 1 .

[0047] Preferably, the shielding filler 3 is concrete. Since the through-ground wire 5 is mostly lead-clad multi-strand bare copper wire, and the through-ground wire 5 is generally laid in a bare laying manner, it is often stolen. Concrete has the characteristics of good stability and is not easy to be destroyed. Therefore, wrapping the through-ground wire 5 with concrete can not only prevent the through-ground wire from affecting nearby cables and related equipment due to temperature rise or electromagnetic interference when current passes through it, providing a guarantee for the normal operation of facilities along the railway, but also preventing the through-ground wire 5 from being stolen; and concrete is cheap, which can further reduce the cost of the fixture.

[0048] Preferably, the length of the trough body 1 is greater than 1.4m and less than 3m. In view of the weight of the trough body 1 itself and the bearing capacity of the embedded bracket, the length of a single trough body 1 should not exceed 3m, nor be shorter than 1.4m. The length of the trough body 1 can be changed within a limited length range according to the installation environment of the bridge.

[0049] In the description of the present application, it should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the orientation or position relationship indicated by the terms "upper" and "lower" is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0050] It should be noted that, in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0051] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A method for fixing a railway through-ground wire, characterized in that: The following steps are involved: A trough body (1) is installed on a crossbeam (8) of a cable duct (7), and a grounding copper bar (4) is installed on a side wall of the cable duct, wherein the grounding copper bar (4) is located on a side of the trough body (1), and the grounding copper bar (4) is electrically connected to working equipment along the railway line; Placing a through grounding wire (5) in the slot body (1), filling the slot body (1) with a shielding filler (3), and electrically connecting the through grounding wire (5) to the grounding copper busbar (4); A tank cover (6) is installed on the top of the tank body (1); The shielding filler (3) is concrete, the length of the trough body (1) is greater than 1.4 m and less than 3 m, and a gap is provided between adjacent trough bodies (1), and the gap is 2 mm-10 mm.

2. A method for fixing a railway through-ground wire according to claim 1, characterized in that: The method of fixing the trough body (1) on the crossbeam (8) of the cable channel (7) comprises the following steps: installing two first angle steels (2) at the bottom of the trough body (1); the trough body (1) is fixedly connected to the crossbeam (8) via the first angle steels (2).

3. A method for fixing a railway through-ground wire as claimed in claim 2, characterized in that: The fixing method further comprises the following steps: after installing the slot cover (6) on the top of the slot body (1), fixing a second angle steel (9) on the top of the slot cover (6), and welding the second angle steel (9) to the first angle steel (2).

4. A method for fixing a railway through-ground wire according to claim 1, characterized in that: An inclination angle is provided between the trough body (1) and the cross beam (8).

5. A method for fixing a railway through-ground wire according to claim 1, characterized in that: The fixing method further comprises the following steps: after the tank cover (6) is installed on the top of the tank body (1), a clamping hoop is detachably fixed across the tank body (1).

6. A fixing device for implementing the method for fixing the railway through-ground wire according to claim 1, characterized in that: include: A trough body (1), the trough body (1) being arranged on a crossbeam (8) of a cable channel (7) and being used for accommodating a through ground wire (5); A shielding filler (3), the shielding filler (3) being arranged in the slot body (1) and wrapping around the through grounding wire (5); A tank cover (6), the tank cover (6) being connected to the top of the tank body (1); A grounding copper busbar (4), the grounding copper busbar (4) being arranged on the side wall of the cable channel (7) and located on the side of the trough body (1), and being used for being electrically connected to the through-ground wire (5) and working equipment along the railway respectively.

7. A fixing device for a railway through-ground wire as claimed in claim 6, characterized in that: The fixing device also includes two first angle steels (2), and the trough body (1) is fixed to the crossbeam (8) via the two first angle steels (2).

8. A fixing device for a railway through-ground wire as claimed in claim 7, characterized in that: The fixing device also includes a second angle steel (9), one end of which is fixedly connected to the top of the slot cover (6), and the other end of which is fixedly connected to the first angle steel (2).

9. A fixing device for a railway through-ground wire as claimed in claim 6, characterized in that: An inclination angle is provided between the trough body (1) and the cross beam (8).

10. A fixing device for a railway through-ground wire as claimed in claim 6, characterized in that: The fixing device also includes a hoop member, which is detachably fixed across the trough body (1).

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