Closed fire-resistant cable trough box

Abstract

The utility model discloses a closed fire-resistant cable trough box, a sealing cover structure is arranged at the joint of two adjacent trough box units in a surrounding manner, each trough box unit is of a vertically separable structure, a first sealing cover piece and a second sealing cover piece can be made of stainless steel plates with certain widths, and the first sealing cover piece and the second sealing cover piece are matched with the trough box units in appearance and shape; the sealing cover structure can cover a gap in the butt joint position of the two groove box units, and flame in the fire disaster is prevented from spreading into the interior from the butt joint gap. The groove box units are all made of fireproof heat insulation plates, each fireproof heat insulation plate comprises a stainless steel outer layer located on the outer layer, a fireproof heat insulation layer located on the middle layer and a fireproof plate layer located on the inner layer, good corrosion resistance is achieved, the service life is long, and when a fire happens outside, the fireproof heat insulation plates can not be damaged. It is ensured that external flames cannot spread into the closed fire-resistant cable trough box, the internal temperature can be controlled to be about 80 DEG C, the cable can still be powered on, and the influence of fire disasters on an electrical system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof trough boxes, in particular to a closed fireproof cable trough box. Background Art

[0002] Fireproof cable trough boxes are protective devices for cables and wires. Their main purpose is to provide additional fire protection when a fire occurs. They can confine the fire to a certain area, prevent the fire from spreading to other areas, slow down the development of the fire, and buy precious time for personnel evacuation and fire extinguishing.

[0003] In addition, cables and wires are important components of electrical systems. Once damaged by fire, it may cause power outages, equipment damage, and even more serious accidents. Fireproof cable troughs can provide an additional layer of protection for cables, preventing direct damage to cables and wires by fire, thereby reducing the impact of fire on electrical systems.

[0004] The main body of the existing fireproof cable trough box is generally made of color steel plate, which is easily corroded in a humid environment and has a short service life. In addition, the connection gap between the trough boxes is large, and the fireproof effect mainly depends on the fireproof board placed inside the trough box later, which cannot achieve a good fireproof and heat insulation effect. For this reason, the patent application 201520411581.8 proposes a composite plug-in fire-resistant cable trough box, which realizes a highly sealed connection between the trough boxes, and improves the fire resistance by setting a fireproof structure in the trough box shell. However, once this fully enclosed fireproof cable trough box is installed, it is difficult to troubleshoot and repair internal cable line problems, and it is not reliable in actual use. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art and provides a closed fire-resistant cable trough box with good sealing and fireproofing and heat insulation properties, and the trough box installation box is easy to open, which is convenient for troubleshooting and repairing cable line problems.

[0006] In order to achieve the above object, the technical solution of the utility model is:

[0007] A closed fire-resistant cable trough box includes trough box units that can be connected and extended frontward and rearward, and a covering structure for covering gaps is arranged around the connection between two adjacent trough box units. The covering structure includes a detachable first covering member and a second covering member, and the first covering member and the second covering member are both fixedly connected to the trough box unit.

[0008] Preferably, the trough box units are all made of fireproof and heat-insulating panels, which include a stainless steel outer layer located on the outer layer, a fire-resistant and heat-insulating layer located on the middle layer, and a fireproof board layer located on the inner layer.

[0009] Preferably, the first cover member and the second cover member are connected by a lock.

[0010] Preferably, the trough box unit comprises a detachable upper box body portion and a lower box body portion, and the upper box body portion is covered on the top of the lower box body portion.

[0011] Preferably, a connector is provided at the connection between the upper box body and the lower box body, the connector is H-shaped, and the connection between the upper box body and the lower box body is respectively inserted into the upper and lower notches of the connector.

[0012] Preferably, the trough box unit comprises a detachable lower box body and a cover plate, and a positioning strip which fits with the lower box body is provided on the lower side surface of the cover plate along its length direction.

[0013] Preferably, the cover plate is formed by splicing two sub-cover plates, wherein the stainless steel outer layer at the connecting end of one sub-cover plate and the inner wall side of the positioning strip are provided with a plug-in plate extending toward the other sub-cover plate, and when the two sub-cover plates are spliced, the plug-in plate of one sub-cover plate is seamlessly inserted into the other sub-cover plate.

[0014] Preferably, a first fixing hole is provided on the plug board, and a second fixing hole corresponding to the position of the first fixing hole is provided at the connecting end of the other sub-cover plate.

[0015] Preferably, a triangular reinforcing piece is provided at a corner of the inner wall of the trough box unit, and a mounting hole is provided on the reinforcing piece.

[0016] Preferably, a reinforcement piece is also installed at the opening of the trough box unit, and the trough box unit, the cover structure and the reinforcement piece are fixedly connected by bolts or screws.

[0017] The beneficial effects of the utility model are as follows: a closed fire-resistant cable trough box of the utility model is provided with a cover structure for covering the gap around the connection of two adjacent trough box units, the cover structure includes a detachable first cover piece and a second cover piece, the trough box unit is a structure that can be separated up and down, the first cover piece and the second cover piece can be made of a stainless steel plate with a certain width, and fit the appearance shape of the trough box unit; the complete cover structure can cover the gap at the joint of the two trough box units to prevent the flame from spreading from the joint gap to the inside during a fire. In addition, the first cover piece and the second cover piece are connected by a lock buckle, and when the cable line inside the closed fire-resistant cable trough box needs to be installed or repaired, it is only necessary to open the lock buckle to realize the disassembly of the upper half of the trough box unit structure, which is very convenient to operate. The trough box units are all made of fireproof and heat-insulating panels, which include a stainless steel outer layer, a fire-resistant insulation layer in the middle layer, and a fire-proof board layer in the inner layer. They have good corrosion resistance and a long service life. When a fire occurs outside, they can ensure that the external flames will not spread to the inside of the closed fire-resistant cable trough box. The internal temperature can be controlled at around 80°C, and the cables can still be energized, reducing the impact of fire on the electrical system and reducing losses caused by power outages, equipment damage, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of Example 1 of the utility model after removing the upper box body;

[0020] Figure 3 for Figure 2 sectional view of;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present utility model;

[0022] Figure 5 for Figure 4 sectional view of;

[0023] Figure 6 This is a schematic diagram of the structure of Example 2 of the utility model after removing a sub-cover plate;

[0024] Figure 7 This is a schematic diagram of the structure of the cover plate in Example 2 of the utility model;

[0025] Figure 8 for Figure 7 sectional view of;

[0026] Fig. 9 This is a schematic structural diagram of a sub-cover plate in Example 2 of the utility model;

[0027] Fig.10 for Fig. 9 The enlarged view of point A in the middle;

[0028] Fig.11 This is a schematic structural diagram of another sub-cover plate in Example 2 of the utility model. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation methods.

[0030] A closed fire-resistant cable trough box of the present application includes a trough box unit 1 that can be connected and extended front and back. Through the front and back connection of the trough box unit 1, it can be assembled into closed fire-resistant cable trough boxes of different lengths to meet the use requirements. A cover structure 2 for covering the gap is arranged around the connection between two adjacent trough box units 1. The cover structure 2 includes a separable first cover member 21 and a second cover member 22. The first cover member 21 and the second cover member 22 are both fixedly connected to the trough box unit 1. Specifically, the trough box unit 1 is a structure that can be separated from top to bottom. The first cover member 21 and the second cover member 22 can be made of a stainless steel plate with a certain width and match the appearance shape of the trough box unit 1. The first cover member 21 connects the upper half of the structure of the trough box unit 1, and the second cover member 22 connects the lower half of the structure. The two ends of the first cover member 21 and the second cover member 22 can be connected by a lock or other common connection structures. The complete cover structure 2 can cover the gap between the two trough box units 1 to prevent the flame from spreading into the interior from the gap during a fire. In addition, the first cover member 21 and the second cover member 22 are connected by a lock. When the cable line inside the closed fire-resistant cable trough box needs to be installed or repaired, the upper part of the trough box unit 1 can be disassembled by simply opening the lock, which is very convenient to operate.

[0031] In order to achieve a comprehensive heat insulation and fire prevention effect, the trough box unit 1 is made of fireproof and heat-insulating panels, which include a stainless steel outer layer 91 located on the outer layer, a fire-resistant and heat-insulating layer 92 located on the middle layer, and a fireproof board layer 93 located on the inner layer. The stainless steel outer layer 91 has good corrosion resistance and a long service life. In addition, the melting point of stainless steel is 1200-1600°C, and the flame temperature is about 800°C. The stainless steel outer layer 91 will not melt during a fire, and a good physical protection effect can still be guaranteed. The fire-resistant and heat-insulating layer 92 in the middle layer is made of aluminum silicate fiberboard, which has good toughness, stable performance, and good fire-resistant and heat-insulating effects. The fireproof board layer 93 is made of fireproof board, and the thickness ratio of the fire-resistant insulation layer 92 to the fireproof board layer 93 can be 1-2:1. Through the double fireproof and heat-insulating effects of the fire-resistant insulation layer 92 and the fireproof board layer 93, when a fire occurs outside, it can be ensured that the external flame will not spread to the inside of the closed fire-resistant cable trough box, and the internal temperature can be controlled at around 80°C. The cable can still be energized, reducing the impact of the fire on the electrical system and reducing the losses caused by power outages, equipment damage, etc.

[0032] There are currently two implementation forms of closed fire-resistant cable trough boxes.

[0033] Embodiment 1

[0034] like Figure 1-Figure 3 A closed fire-resistant cable trough box is shown, wherein the trough box unit 1 comprises a detachable upper box body 11 and a lower box body 12. The trough box unit 1 can be in the shape of a rectangular parallelepiped as a whole. The upper box body 11 and the lower box body 12 can be in the shape of a concave letter of the same or similar size, and the upper box body 11 is covered on the upper part of the lower box body 12. In order to better install and connect the upper box body 11 and the lower box body 12, a plug connector 3 is provided at the connection between the upper box body 11 and the lower box body 12. The plug connector 3 is H-shaped, and the connection between the upper box body 11 and the lower box body 12 is respectively inserted into the upper and lower notches of the plug connector 3. The left and right side panels of the plug connector 3 play the role of shielding the gap at the connection and guiding the installation. The left and right side panels of the plug connector 3 are preferably of different heights, so that a better and more accurate effect can be achieved during the guiding installation.

[0035] In addition, a triangular reinforcement piece 7 is provided at the inner wall corner of the trough box unit 1, and a mounting hole 71 is provided on the reinforcement piece 7. The reinforcement pieces 7 are distributed at intervals inside the closed fire-resistant cable trough box, and play a role in reinforcing the closed fire-resistant cable trough box structure, so that the closed fire-resistant cable trough box has better resistance to external forces. A reinforcement piece 7 is also installed at the opening of the trough box unit 1, where the trough box unit 1, the cover structure 2 and the reinforcement piece 7 are fixedly connected by bolts or screws. For the connection of the trough box unit 1 with relatively poor structural stability, the trough box unit 1, the cover structure 2 and the reinforcement piece 7 are fixed synchronously to ensure the stability and firmness of the connection of the closed fire-resistant cable trough box.

[0036] Embodiment 2

[0037] like Figure 4-Figure 11 A closed fire-resistant cable trough box is shown, wherein the trough box unit 1 comprises a detachable lower box body 14 and a cover plate 15, and a positioning strip 4 is provided on the lower side of the cover plate 15 along its length direction, which fits with the lower box body 14. When the cover plate 15 is installed and connected with the lower box body 14 downward, the positioning strip 4 plays a role of guiding the installation, and at the same time, the positioning strip 4 fits with the inner wall of the lower box body 14, so that it is not easy to slide forward and backward after the cover plate 15 and the lower box body 14 are installed. In addition, positioning blocks can be provided at the front and rear ends of the inner wall of the lower box body 14, and the positioning blocks can further limit the forward and backward movement of the positioning strip 4, thereby preventing the cover plate 15 and the lower box body 14 from sliding forward and backward.

[0038] As a preferred solution, the cover plate 15 is formed by splicing two sub-cover plates 5, wherein the stainless steel outer layer 91 at the connection end of one sub-cover plate 5 and the inner wall side of the positioning strip 4 are both provided with a plug-in plate 51 extending toward the other sub-cover plate 5. When the two sub-cover plates 5 are spliced, the plug-in plate 51 of one sub-cover plate 5 is seamlessly inserted into the other sub-cover plate 5. The plug-in plate 51 is provided with a first fixing hole 6, and the connection end of the other sub-cover plate 5 is provided with a second fixing hole 61 corresponding to the position of the first fixing hole 6. When the two sub-cover plates 5 are spliced, the two sub-cover plates 5 and the fire-resistant heat-insulating layer 92 and the fire-proof board layer 93 therein are fixed together by screws and the first fixing hole 6 and the second fixing hole 61. The installation is convenient and the structure is stable. Moreover, the design of the plug-in plate 51 ensures that there will be no gap at the connection of the two sub-cover plates 5 to directly expose the fire-resistant heat-insulating layer 92.

[0039] In addition, a triangular reinforcement piece 7 is also provided at the inner wall corner of the trough box unit 1, and a mounting hole 71 is provided on the reinforcement piece 7. The reinforcement pieces 7 are distributed at intervals inside the closed fire-resistant cable trough box, and play a role in reinforcing the closed fire-resistant cable trough box structure, so that the closed fire-resistant cable trough box has better resistance to external forces. A reinforcement piece 7 is also installed at the opening of the trough box unit 1, where the trough box unit 1, the cover structure 2 and the reinforcement piece 7 are fixedly connected by bolts or screws. For the connection of the trough box unit 1 with relatively poor structural stability, the trough box unit 1, the cover structure 2 and the reinforcement piece 7 are reinforced by synchronously fixing the three parts, so as to ensure the stability and firmness of the connection of the closed fire-resistant cable trough box.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A closed fire-resistant cable trough box, characterized in that: The invention comprises a slot box unit (1) which can be connected and extended forward and backward, and a cover structure (2) for covering the gap is arranged around the connection between two adjacent slot box units (1), and the cover structure (2) comprises a detachable first cover member (21) and a second cover member (22), and the first cover member (21) and the second cover member (22) are both fixedly connected to the slot box unit (1).

2. The closed fire-resistant cable trough box according to claim 1, characterized in that: The trough box units (1) are all made of fireproof and heat-insulating panels, which include a stainless steel outer layer (91) located at the outer layer, a fire-resistant and heat-insulating layer (92) located at the middle layer, and a fireproof board layer (93) located at the inner layer.

3. The closed fire-resistant cable trough box according to claim 1, characterized in that: The first cover piece (21) and the second cover piece (22) are connected via a lock.

4. The closed fire-resistant cable trough box according to claim 2, characterized in that: The trough box unit (1) comprises a detachable upper box body (11) and a lower box body (12), wherein the upper box body (11) is covered on the upper part of the lower box body (12).

5. The closed fire-resistant cable trough box according to claim 4, characterized in that: A plug connector (3) is provided at the connection between the upper box body (11) and the lower box body (12); the plug connector (3) is H-shaped, and the connection between the upper box body (11) and the lower box body (12) is respectively inserted into the upper and lower notches of the plug connector (3).

6. The closed fire-resistant cable trough box according to claim 2, characterized in that: The trough box unit (1) comprises a detachable lower box body (14) and a cover plate (15), and a positioning strip (4) which fits the lower box body (14) is arranged on the lower side of the cover plate (15) along its length direction.

7. The closed fire-resistant cable trough box according to claim 6, characterized in that: The cover plate (15) is formed by splicing two sub-cover plates (5), wherein the stainless steel outer layer (91) at the connection end of one sub-cover plate (5) and the inner wall side of the positioning strip (4) are both provided with a plug-in plate (51) extending toward the other sub-cover plate (5), and when the two sub-cover plates (5) are spliced, the plug-in plate (51) of one sub-cover plate (5) is seamlessly inserted into the other sub-cover plate (5).

8. The closed fire-resistant cable trough box according to claim 7, characterized in that: The plug board (51) is provided with a first fixing hole (6), and a second fixing hole (61) corresponding to the position of the first fixing hole (6) is opened at the connection end of the other sub-cover plate (5).

9. The closed fire-resistant cable trough box according to any one of claims 1 to 8, characterized in that: A triangular reinforcing piece (7) is provided at a corner of the inner wall of the trough box unit (1), and a mounting hole (71) is provided on the reinforcing piece (7).

10. The closed fire-resistant cable trough box according to claim 9, characterized in that: A reinforcing member (7) is also installed at the opening of the trough box unit (1), where the trough box unit (1), the cover structure (2) and the reinforcing member (7) are fixedly connected by bolts or screws.

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