Lightning protection structure for railway distribution cabinet

Abstract

The utility model discloses a lightning protection structure for railway distribution cabinet relates to railway distribution cabinet technical field. The utility model discloses a half cylinder that is set up in the upper and lower joint of two groups of cylinder, the middle position of the end face of two groups of half cylinders is all seted up with recess, and the end face of two groups of half cylinders that are located recess left and right is all fixed with the electrically conductive pole that recess interior is connected, and the end face of electrically conductive pole near recess all sets up and inserts the hole, and the inside of two recesses is embedded with gas discharge tube, and the left and right end of two groups of half cylinders is all set with sleeve, and the surface side of two groups of half cylinders in the inside of sleeve all sets up with thread groove, and the end face of sleeve all sets up with the inner screw ring that is screwed on spiral groove. The utility model discloses the position of gas discharge tube is positioned by two groups of half cylinders and electrically conductive pole and guarantees that gas discharge tube can normally electrify and work, and at the same time, the inner screw ring is screwed at the end position of two groups of half cylinders, and can be convenient for the dismounting work of gas discharge tube.

Description

Technical Field

[0001] This utility model belongs to the technical field of railway junction boxes, and in particular relates to a lightning protection structure for railway junction boxes. Background Technology

[0002] The railway signaling system is the core nerve center ensuring the safe and efficient operation of trains. As an important component of the signaling system, the junction box plays a crucial role. It is usually located in the signal machinery room and is the key junction and interface hub for cable connections between indoor and outdoor signaling equipment. The junction box contains a large number of signal cables that are introduced from the outdoor equipment and then distributed to different signaling equipment boards or racks indoors through terminal blocks or connectors. This structural feature makes the junction box a natural electromagnetic energy gathering point, and also one of the most important and dangerous entry points for lightning electromagnetic pulses to damage the signaling system. Given the critical position of the junction box in the signaling system and the high-intensity lightning threat it faces, setting up a dedicated, powerful, and reliable lightning protection structure at the junction box is a crucial line of defense to ensure the safe, stable, and uninterrupted operation of the entire railway signaling system. Traditional lightning protection structures involve complex methods for fixing gas discharge tubes, requiring the entire structure to be disassembled for replacement. This results in low maintenance efficiency and cumbersome operation. Furthermore, in existing technologies, the discharge tubes are prone to displacement or poor contact, affecting the lightning protection effect and circuit stability. Therefore, we provide a lightning protection structure for railway junction boxes to address these problems. Utility Model Content

[0003] The purpose of this utility model is to provide a lightning protection structure for railway junction boxes. The gas discharge tube is positioned by two sets of semi-cylinders and conductive rods to ensure that the gas discharge tube can be energized and operated normally. At the same time, the inner threaded ring is screwed at the end of the two sets of semi-cylinders to facilitate the disassembly and assembly of the gas discharge tube.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a lightning protection structure for railway junction boxes, comprising two sets of semi-cylinders connected vertically in a cylindrical arrangement; a notch is provided at the center of the end face where the two sets of semi-cylinders meet; a conductive rod connected to the inside of the notch is fixed to the end face of the two sets of semi-cylinders located to the left and right of the notch; a insertion hole is provided on the end face of the conductive rod near the notch; a gas discharge tube is embedded in the interior between the two notches; the guide wires at both ends of the gas discharge tube are respectively inserted into the corresponding insertion holes; sleeves are fitted at the left and right ends of the two sets of semi-cylinders; threaded grooves are provided on the surface of the two sets of semi-cylinders inside the sleeves; and an internal threaded ring is provided on the end face of the sleeves, spiraling on the spiral groove.

[0005] The present invention is further configured such that a grounding rod is fixed to the side wall of the lower semi-cylindrical surface, and the grounding rod is electrically connected to the conductive rod on the left side of the notch through a cable fixed to the end face.

[0006] The present invention is further configured such that each end face inside the sleeve is fixed with a contact rod, and the contact rod abuts against the adjacent conductive rod.

[0007] The present invention is further configured such that an annular T-groove is provided on the end face of the sleeve connected to the inner threaded ring, and a T-shaped ring that cooperates with the annular T-groove is fixed on the end face of the inner threaded ring.

[0008] The present invention is further provided that the end face of the sleeve opposite to the inner threaded ring has an L-shaped locking plate, and the locking plate is connected to the sleeve by bolts.

[0009] This utility model has the following beneficial effects: 1. When quickly assembling and disassembling the gas discharge tube, this utility model disassembles the entire device inside the railway junction box and controls the inner threaded ring to rotate along the surface of the two sets of semi-cylinders towards the end face. As a result, the inner threaded ring pushes the sleeve to move outward along the surface of the two sets of semi-cylinders. When the inner threaded ring falls off the semi-cylinders, the two sets of semi-cylinders are no longer limited by the inner threaded ring, and the two sets of semi-cylinders can be separated. The gas discharge tube inside the recess between the two sets of semi-cylinders can be taken out, thus realizing the quick assembly and disassembly of the gas discharge tube.

[0010] 2. In this invention, the gas discharge tube is placed into the recess, and the lines at both ends of the gas discharge tube are inserted into the corresponding insertion holes. After the two sets of semi-cylinders are connected and assembled, the two sets of semi-cylinders are compressed against each other, so that the conductive rod on each set of semi-cylinders clamps the line at the end of the gas discharge tube, and the conductive rod abuts against the contact rod. Therefore, the line of the gas discharge tube can be electrically connected to the contact rod through the conductive rod, thereby ensuring that the gas discharge tube can be energized and work normally. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is an exploded view of the structure of the semi-cylinder, inner threaded ring, sleeve, and gas discharge tube in this utility model.

[0014] Figure 3 This is an exploded view of the semi-cylinder and gas discharge tube in this utility model.

[0015] Figure 4This is an exploded view of the internal threaded ring and sleeve in this utility model.

[0016] Figure 5 This is a cross-sectional view of the structure of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1-Semi-cylinder, 101-Threaded groove, 102-Conductive rod, 103-Notch, 104-Plug-in hole, 2-Internal threaded ring, 201-T-ring, 3-Sleeve, 301-Locking plate, 302-Electric contact rod, 303-Annular T-groove, 4-Gas discharge tube, 401-Guide wire, 5-Grounding rod, 501-Cable. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Example 1 Please see Figures 1 to 5 This utility model is a lightning protection structure for railway junction boxes. The gas discharge tube 4 is positioned by two sets of semi-cylinders 1 and conductive rods 102 to ensure that the gas discharge tube 4 can be energized and operated normally. At the same time, the inner threaded ring 2 is screwed at the end of the two sets of semi-cylinders 1 to facilitate the disassembly and assembly of the gas discharge tube 4.

[0020] Specifically, there are two sets of semi-cylinders 1 connected vertically in a cylindrical configuration. A notch 103 is provided at the center of the end face where the two sets of semi-cylinders 1 meet. A conductive rod 102, communicating with the interior of the notch 103, is fixed to the end face of each set of semi-cylinders 1 to the left and right of the notch 103. An insertion hole 104 is provided on the end face of the conductive rod 102 near the notch 103. A gas discharge tube 4 is embedded inside the two notches 103. Guide wires 401 at both ends of the gas discharge tube 4 are inserted into the corresponding insertion holes 104. Sleeves 3 are fitted onto the left and right ends of each set of semi-cylinders 1. Threaded grooves 101 are provided on the surface of each set of semi-cylinders 1 inside the sleeve 3. An internal threaded ring 2 spiraling on the threaded groove is provided on the end face of each sleeve 3. An electric contact rod 302 is fixed to the end face inside the sleeve 3, and the electric contact rod 302 abuts against the adjacent conductive rod 102.

[0021] The operation process of this embodiment is as follows: When the entire device is installed inside the railway junction box using the above structure, the cables 501 in the railway junction box need to be electrically connected to the contact rods 302 inside the sleeve 3. Therefore, the current will be introduced from the contact rod 302 position near the grounding rod 5 and discharged from the position of the other contact rod 302. At the same time, when it is necessary to quickly disassemble and assemble the gas discharge tube 4, the entire device is disassembled inside the railway junction box, and the inner thread ring 2 is controlled to rotate along the surface position of the two sets of semi-cylinders 1 towards the end face. Thus, the inner thread ring 2 will push the sleeve 3 to move outward along the surface position of the two sets of semi-cylinders 1. When the inner thread ring 2 falls off on the semi-cylinder 1, the two sets of semi-cylinders 1 are no longer limited by the inner thread ring 2. Then, the two sets of semi-cylinders 1 can be separated, and the gas discharge tube 4 inside the recess 103 between the two sets of semi-cylinders 1 can be taken out, realizing the quick disassembly and assembly of the gas discharge tube 4. Simultaneously, the gas discharge tube 4 is placed into the recess 103, and the tubing at both ends of the gas discharge tube 4 is inserted into the corresponding insertion holes 104. After the two sets of semi-cylinders 1 are connected and assembled, the two sets of semi-cylinders 1 are compressed against each other, so that the conductive rod 102 on each set of semi-cylinders 1 clamps the tubing at the end face of the gas discharge tube 4, and the conductive rod 102 abuts against the contact rod 302. Therefore, the tubing of the gas discharge tube 4 can be electrically connected to the contact rod 302 through the conductive rod 102, thereby ensuring that the gas discharge tube 4 can be energized and work normally.

[0022] Example 2 Please see Figure 3 and Figure 5 Based on Example 1, the surge current is discharged into the ground through the grounding rod 5 to ensure the safety of subsequent circuits.

[0023] Specifically, a grounding rod 5 is fixed to the side wall of the lower semi-cylinder 1, and the grounding rod 5 is electrically connected to the conductive rod 102 to the left of the notch 103 through a cable 501 fixed to the end face.

[0024] The operation process of this embodiment is as follows: When the surge current enters the gas discharge tube 4 through the above structure, the gas discharge tube 4 is broken down and instantly changes from a high impedance insulation state to a low impedance conduction state under high voltage impact. The surge current is discharged into the ground through the grounding rod 5.

[0025] Example 3 Please see Figure 3 and Figure 4 Based on Example 1, the T-ring 201 and the annular T-groove 303 work together to stabilize the position of the sleeve 3 and the locking plate 301, preventing them from shifting arbitrarily.

[0026] Specifically, the end face of the sleeve 3 connected to the inner threaded ring 2 is provided with an annular T-groove 303. The end face of the inner threaded ring 2 is fixed with a T-shaped ring 201 that cooperates with the annular T-groove 303. The end face of the sleeve 3 opposite to the inner threaded ring 2 has an L-shaped locking plate 301, and the locking plate 301 is connected to the sleeve 3 by bolts.

[0027] The operation process of this embodiment is as follows: When the inner threaded ring 2 is rotated, the inner threaded ring 2 will drive the T-shaped ring 201 to rotate in the annular T-groove 303, thereby ensuring that the inner threaded ring 2 will not drive the sleeve 3 to rotate synchronously during the rotation process, so that the position of the sleeve 3 and the locking plate 301 can be stabilized and will not be arbitrarily deviated.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A lightning protection structure for railway junction boxes, comprising two sets of semi-cylinders (1) arranged vertically connected in a cylindrical configuration; characterized in that: A notch (103) is provided at the middle of the end face where the two sets of semi-cylinders (1) meet. A conductive rod (102) connected to the inside of the notch (103) is fixed on the end face of the two sets of semi-cylinders (1) located to the left and right of the notch (103). An insertion hole (104) is provided on the end face of the conductive rod (102) near the notch (103). A gas discharge tube (4) is embedded in the interior between the two notches (103). The guide wires (401) provided at both ends of the gas discharge tube (4) are respectively inserted into the corresponding insertion holes (104). A sleeve (3) is provided on the left and right ends of the two sets of semi-cylinders (1). A threaded groove (101) is provided on the surface of the two sets of semi-cylinders (1) inside the sleeve (3). An internal threaded ring (2) is provided on the end face of the sleeve (3) with a spiral groove.

2. The lightning protection structure for railway junction boxes according to claim 1, characterized in that, A grounding rod (5) is fixed to the side wall of the lower semi-cylinder (1). The grounding rod (5) is electrically connected to the conductive rod (102) to the left of the notch (103) through a cable (501) fixed to the end face.

3. The lightning protection structure for railway junction boxes according to claim 1, characterized in that, Each end face inside the sleeve (3) is fixed with an electric contact rod (302), and the electric contact rod (302) abuts against the adjacent conductive rod (102).

4. The lightning protection structure for railway junction boxes according to claim 1, characterized in that, The end face of the sleeve (3) connected to the inner threaded ring (2) is provided with an annular T-groove (303), and the end face of the inner threaded ring (2) is fixed with a T-shaped ring (201) that cooperates with the annular T-groove (303).

5. A lightning protection structure for a railway junction box according to claim 1, characterized in that, The sleeve (3) has an L-shaped locking plate (301) on the end face opposite to the inner threaded ring (2), and the locking plate (301) is connected to the sleeve (3) by bolts.

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