A type of explosion-proof cable tray

Abstract

This utility model discloses an explosion-proof cable tray, including a tray body with a cover plate on top. Cable inlets are located at the lower ends of both sides of the tray body. An arc-shaped retaining plate is located at the upper end of the cable inlet on the side away from the tray body. Two symmetrical first fixing plates are located on the side of the cable inlet away from the pin shaft. A shaft is located between the two first fixing plates and is fixedly connected to a threaded rod at its center. A pressing block is located above the threaded rod on a second fixing plate. L-shaped retaining plates are located on both sides below the cover plate, and connecting plates are inserted into the L-shaped retaining plates. The two connecting plates are fixedly connected by a groove below them. Multiple equidistantly arranged support rods are located at the lower end of the groove, and a dry powder bag is located above the support rods. This explosion-proof cable tray provides good protection and excellent sealing, effectively improving the stability of the connection between the explosion-proof cable tray and the cable, and enhancing the practicality of the explosion-proof cable tray.

Description

Technical Field

[0001] This utility model relates to the field of power connection technology, and in particular to an explosion-proof cable tray. Background Technology

[0002] In the field of power communication technology, optical cables can be installed either by placing them directly on cable supports or by laying them in metal cable trays. The cable trays are used as transition points for the wire joints. The conduits are connected to the cable trays, and the wires inside the conduits are connected in the cable trays, which serves to protect and connect the wires. Chinese Patent No. CN220475391U discloses an explosion-proof cable tray, comprising a first box body with openings at both ends and a copper connector shell fixedly connected to the first box body for connecting cables. It also includes a buffer box snapped into the first box body; a spring clip is fixedly connected to the outer wall of the buffer box, abutting against the first box body; the buffer box is filled with a fire extinguishing agent. In the event of an explosion, the impact is transmitted to the buffer box, where the ceramic absorbs the impact and shatters into pieces, reducing the damage caused by the explosion. The shattering of the ceramic creates gaps, and the impact force compresses the ceramic fragments, squeezing the fire extinguishing agent into the inner cavity where the cable is installed, thus covering the cable and the copper connector shell, isolating the oxygen required for combustion, thereby preventing spontaneous combustion of the explosion-proof box and the cable. Furthermore, the elastic spring clip can further absorb the impact, preventing explosions and breakdowns due to accidents, and thus preventing secondary accidents. However, the sealing effect between the cable and the end plate in this type of explosion-proof cable tray is poor. During long-term use, dust and other impurities can easily enter the interior of the explosion-proof cable tray through the gap between the cable and the end plate. At the same time, the connection strength between the explosion-proof cable tray and the cable is poor, which reduces the tensile strength of the cable after connection and is not conducive to the subsequent use of the cable. Therefore, we propose an explosion-proof cable tray. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides an explosion-proof cable tray. This utility model solves the issues of poor sealing between the cable and the end plate in the explosion-proof tray, which allows dust and other impurities to easily enter the interior of the tray through the gap between the cable and the end plate during long-term use. Furthermore, the poor connection strength between the explosion-proof tray and the cable reduces the tensile strength of the cable after connection, hindering its subsequent use.

[0004] This utility model discloses an explosion-proof cable trough, comprising a box body, a cover plate on the top of the box body, and cable inlets on both lower ends of the box body. An arc-shaped retaining plate is located on the upper end of the cable inlet on the side away from the box body. One side of the arc-shaped retaining plate is movably connected to the cable inlet via a pin. Two symmetrical first fixing plates are located on the side of the cable inlet away from the pin, and a shaft is located between the two first fixing plates. The shaft is fixedly connected to a threaded rod in the middle. Two second fixing plates are located on the side of the arc-shaped retaining plate near the threaded rod. A pressing block is located above the threaded rod on the second fixing plates. L-shaped retaining plates are located on both sides below the cover plate, and connecting plates are inserted into the L-shaped retaining plates. A slot is fixedly connected below the two connecting plates, and multiple equally spaced support rods are located at the lower end of the slot. A dry powder bag is located above the support rods.

[0005] Preferably, the inlet pipe is provided with a sealing ring on the side near the box body, and the inlet pipe and the inner wall of the arc-shaped card plate are provided with matching first rubber gaskets.

[0006] Preferably, rotating blocks are provided on both sides of the extrusion block.

[0007] Preferably, the cover plate is provided with a plurality of connection holes arranged in a matrix, the box body is provided with a first threaded hole that matches the connection holes, and the cover plate and the box body are fixedly connected by bolts.

[0008] Preferably, a second rubber gasket is provided between the cover plate and the box body, and the second rubber gasket has a clearance hole that matches the first threaded hole.

[0009] Preferably, the L-shaped card plate is provided with a plurality of through holes arranged at equal intervals, the connecting plate is provided with a second threaded hole that matches the through holes, and the connecting plate and the L-shaped card plate are fixedly connected by fastening bolts.

[0010] Compared with related technologies, this utility model has the following beneficial effects:

[0011] This utility model provides an explosion-proof cable tray. A rotating compression block moves along a threaded rod, compressing a second fixed plate. This causes an arc-shaped clamping plate to rotate around the inlet pipe. The interaction between the arc-shaped clamping plate and the inlet pipe provides stable clamping of the cable. A sealing ring seals the contact surface between the cable and the inlet pipe. A first rubber gasket seals and protects the contact surfaces between the inlet pipe, the arc-shaped clamping plate, and the cable. In the event of electric sparks or arcs in the cable, the dry powder package breaks upon heating, and the dry powder falls into the tray, extinguishing any fires on the cable and preventing explosions or breakdowns. This explosion-proof tray has a simple structure, good protective effect, and excellent sealing. The stable clamping of the cable at the inlet end effectively improves the stability of the connection between the explosion-proof tray and the cable, enhancing the practicality of the explosion-proof tray. Attached Figure Description

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0015] Figure 3 This is a schematic diagram of part A of the present invention;

[0016] Figure 4 This is a bottom view of the cover plate of this utility model.

[0017] In the diagram: 1. Box body; 2. Cover plate; 3. Inlet pipe; 4. Arc-shaped clamping plate; 5. First fixing plate; 6. Shaft; 7. Threaded rod; 8. Second fixing plate; 9. Extrusion block; 10. L-shaped clamping plate; 11. Connecting plate; 12. Placement groove; 13. Support rod; 14. Dry powder bag; 15. Sealing ring; 16. First rubber gasket; 17. Rotating block; 18. Connecting hole; 19. First threaded hole; 20. Bolt; 21. Second rubber gasket; 22. Clearance hole; 23. Through hole; 24. Second threaded hole; 25. Fastening bolt. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] like Figure 1-4As shown, this utility model is a cable explosion-proof trough box, including a box body 1. A cover plate 2 is provided on the top of the box body 1. Inlet pipes 3 are provided on the lower ends of both sides of the box body 1. Cables can pass through the inlet pipes 3 into the box body 1. An arc-shaped retaining plate 4 is provided on the upper end of the side of the inlet pipe 3 away from the box body 1. One side of the arc-shaped retaining plate 4 is movably connected to the inlet pipe 3 by a pin. The pin allows the arc-shaped retaining plate 4 to rotate around the inlet pipe 3. Two symmetrical first fixing plates 5 are provided on the side of the inlet pipe 3 away from the pin. A shaft 6 is provided between the two first fixing plates 5. The two ends of the shaft 6 are movably connected to the first fixing plates 5, allowing the shaft 6 to rotate inside the two first fixing plates 5. The shaft 6 is fixedly connected to a threaded rod 7 in the middle. Two second fixing plates 8 are provided on the side of the arc-shaped retaining plate 4 near the threaded rod 7. An extrusion block 9 is provided above the threaded rod 7 on the second fixing plates 8. The extrusion block 9 is threadedly connected to the threaded rod 7. When the threaded rod 7 is located between the two second fixing plates 8, it extrudes... The pressure block 9 rotates, and the extrusion block 9 moves on the threaded rod 7. The extrusion block 9 extrudes the second fixed plate 8, causing the arc-shaped clamping plate 4 to rotate around the inlet pipe 3. Through the mutual cooperation between the arc-shaped clamping plate 4 and the inlet pipe 3, the cable can be stably clamped. L-shaped clamping plates 10 are provided on both sides below the cover plate 2. Connecting plates 11 are inserted into the L-shaped clamping plates 10. The two connecting plates 11 are fixedly connected by placement grooves 12 below them. Multiple equally spaced supports are provided at the lower end of the placement grooves 12. The support rod 13 has a dry powder bag 14 above it. The L-shaped clamping plate 10 can limit the connecting plate 11. Through the cooperation between the L-shaped clamping plate 10 and the connecting plate 11, the placement slot 12 can be installed below the cover plate 2. The dry powder bag 14 is placed above the support rod 13. When the cable has electric sparks or arcs, the dry powder bag 14 will break due to heat and the dry powder will fall into the box 1. The dry powder can extinguish the fire of the spontaneously combusting cable, thereby preventing the cable from exploding and breaking down due to natural causes.

[0020] The inlet pipe 3 is provided with a sealing ring 15 on the side near the box 1. The inlet pipe 3 and the inner wall of the arc-shaped clamping plate 4 are provided with matching first rubber gaskets 16. The sealing ring 15 can seal the contact surface between the cable and the inlet pipe 3. The first rubber gasket 16 can seal the contact surface between the inlet pipe 3 and the arc-shaped clamping plate 4 and the cable. At the same time, the first rubber gasket 16 is elastic, so that the first rubber gasket 16 can protect the contact surface between the inlet pipe 3 and the arc-shaped clamping plate 4 and the cable.

[0021] Rotating blocks 17 are provided on both sides of the extrusion block 9. The arrangement of the rotating blocks 17 makes it easier for the staff to rotate the extrusion block 9.

[0022] The cover plate 2 is provided with a plurality of matrix-arranged connection holes 18, and the box body 1 is provided with a first threaded hole 19 that matches the connection holes 18. The cover plate 2 and the box body 1 are fixedly connected by bolts 20. The bolts 20 are threadedly connected to the first threaded hole 19. The bolts 20 enable a stable connection between the cover plate 2 and the box body 1.

[0023] A second rubber gasket 21 is provided between the cover plate 2 and the box body 1. The second rubber gasket 21 has a clearance hole 22 that matches the first threaded hole 19. The second rubber gasket 21 can seal the contact surface between the cover plate 2 and the box body 1. The clearance hole 22 allows the bolt to pass through the second rubber gasket 21 and be inserted into the first threaded hole 19.

[0024] The L-shaped clamping plate 10 is provided with a plurality of through holes 23 arranged at equal intervals. The connecting plate 11 is provided with a second threaded hole 24 that matches the through holes 23. The connecting plate 11 and the L-shaped clamping plate 10 are fixedly connected by fastening bolts 25. The fastening bolts 25 are threadedly connected to the second threaded hole 24. The fastening bolts 25 ensure a stable connection between the L-shaped clamping plate 10 and the connecting plate 11.

[0025] In this invention, the cable can be inserted into the housing 1 through the inlet pipe 3. When the threaded rod 7 is located between the two second fixing plates 8, the pressing block 9 rotates and moves on the threaded rod 7, pressing the second fixing plate 8. This causes the arc-shaped clamping plate 4 to rotate around the inlet pipe 3. Through the cooperation between the arc-shaped clamping plate 4 and the inlet pipe 3, the cable can be stably clamped. The sealing ring 15 can seal the contact surface between the cable and the inlet pipe 3. The first rubber gasket 16 can seal the contact surface between the inlet pipe 3 and the arc-shaped clamping plate 4 and the cable. The system is sealed, and the first rubber gasket 16 is elastic, which allows the first rubber gasket 16 to protect the contact surface between the inlet pipe 3 and the arc-shaped clamping plate 4 and the cable. Through the cooperation between the L-shaped clamping plate 10 and the connecting plate 11, the placement groove 12 can be installed below the cover plate 2. The dry powder bag 14 is placed above the support rod 13. When the cable has electric sparks or arcs, the dry powder bag 14 is heated and broken, and the dry powder falls into the box 1. The dry powder can extinguish the electric sparks and arcs in the cable, thereby preventing the cable from exploding and breaking down.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable explosion-proof trough box, comprising a box body (1), characterized in that, The box body (1) is provided with a cover plate (2) on top. Both sides of the box body (1) are provided with inlet pipes (3) at their lower ends. The upper end of the inlet pipe (3) away from the box body (1) is provided with an arc-shaped clamping plate (4). One side of the arc-shaped clamping plate (4) is movably connected to the inlet pipe (3) by a pin. The inlet pipe (3) is provided with two symmetrical first fixing plates (5) on the side away from the pin. A shaft (6) is provided between the two first fixing plates (5). The shaft (6) is fixedly connected to the threaded rod (7) in the middle. The arc-shaped clamping plate (4) Two second fixing plates (8) are provided on the side near the threaded rod (7). The threaded rod (7) is provided with an extrusion block (9) above the second fixing plate (8). L-shaped clamping plates (10) are provided on both sides below the cover plate (2). A connecting plate (11) is inserted into the L-shaped clamping plate (10). The two connecting plates (11) are fixedly connected to the groove (12) below. Multiple support rods (13) are arranged at equal intervals at the lower end of the groove (12). A dry powder bag (14) is provided above the support rod (13).

2. The explosion-proof cable tray according to claim 1, characterized in that, The inlet pipe (3) is provided with a sealing ring (15) on the side near the box body (1), and the inlet pipe (3) and the inner wall of the arc-shaped card plate (4) are provided with matching first rubber gaskets (16).

3. The explosion-proof cable tray according to claim 2, characterized in that, Rotating blocks (17) are provided on both sides of the extrusion block (9).

4. The explosion-proof cable tray according to claim 1, characterized in that, The cover plate (2) is provided with a plurality of matrix-arranged connection holes (18), and the box body (1) is provided with a first threaded hole (19) that matches the connection holes (18). The cover plate (2) and the box body (1) are fixedly connected by bolts (20).

5. The explosion-proof cable tray according to claim 4, characterized in that, A second rubber gasket (21) is provided between the cover plate (2) and the box body (1), and the second rubber gasket (21) has a clearance hole (22) that matches the first threaded hole (19).

6. The explosion-proof cable tray according to claim 1, characterized in that, The L-shaped card plate (10) is provided with a plurality of through holes (23) arranged at equal intervals, and the connecting plate (11) is provided with a second threaded hole (24) that matches the through holes (23). The connecting plate (11) and the L-shaped card plate (10) are fixedly connected by fastening bolts (25).

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