A fire-resistant cable tray

Abstract

The present invention discloses a fire-resistant cable bridge, which belongs to the technical field of cable bridges, including a fire-resistant bridge mechanism, wherein the fire-resistant bridge mechanism includes a fire-resistant cover body and a fire-resistant trough body with a cavity interlayer, a plurality of heat dissipation holes are linearly arranged at equal intervals on both sides of the outer wall of the fire-resistant trough body, a sealed heat dissipation pipe is arranged in each heat dissipation hole, rectangular grooves are arranged on both sides of the inner wall of the fire-resistant trough body, a supporting mesh plate is arranged in both rectangular grooves, a guide cover body and a plurality of cable clamps in a waterproof frame are arranged on the upper side of the supporting mesh plate, and a heat-conducting sealing protection mechanism is arranged on the upper side of the outer wall of the guide cover body. Through the present invention, when a fire occurs and the temperature is abnormally high, the heat dissipation holes can be closed automatically to prevent external heat from entering the interior of the bridge frame, and at the same time, the heat on the bridge frame itself can be absorbed and taken away, so as to avoid heat accumulation in the bridge frame and the high temperature not being reduced, further protecting the cables laid inside, and effectively preventing the cable sheath from being coked and damaged.

Description

Technical Field

[0001] The invention mainly relates to the technical field of cable bridges, in particular to a fire-resistant cable bridge. Background Art

[0002] Cable trays are divided into trough-type cable trays, tray-type cable trays, ladder-type cable trays, grid cable trays and other structures. They are composed of brackets, supports and installation accessories. They can be erected independently or laid on various buildings (structures) and pipe gallery brackets. They have the characteristics of simple structure, beautiful appearance, flexible configuration and easy maintenance. All parts need to be galvanized. For bridges installed in the open air outside buildings, if they are near the sea or in corrosion areas, the material must have the physical properties of corrosion resistance, moisture resistance, good adhesion and high impact resistance.

[0003] In the existing fire-resistant cable bridges, for example, in the technical structure of the application document with application number 201911369984.X, it includes a bridge body, a plurality of heat dissipation holes are provided on the side walls of the bridge body, a fire-resistant layer is fixedly attached to the inner wall of the bridge body for fire blocking and heat insulation, a fire-proof slide plate is provided, the bottom end of the fire-proof slide plate is engaged in the slide groove, a fire-blocking mechanism is provided, and the fire-blocking mechanism includes a fixed wheel, a temperature sensing cavity, and a push rod. The temperature sensing cavity is fixed on the bottom wall outside the bridge body, and a temperature sensing expansion member is provided in the temperature sensing cavity. Although this structure can automatically sense high temperature to close the cable bridge in the event of a fire, and cooperate with the fire-resistant layer to improve the fire resistance and achieve the purpose of protecting the internal cables, the fire-resistant layer also prevents the temperature inside the bridge from dissipating, resulting in heat accumulation, which makes the temperature higher and higher, thereby accelerating the aging, degeneration, and even chain breaking and coking of the cable insulation sheath and protective outer sheath, or causing open flames to cause fires. If there are multiple strands of wires, leakage or circuit breaking may also cause danger. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the present invention mainly provides a fire-resistant cable tray to solve the technical problems raised in the above background technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] A fire-resistant cable tray, comprising a fire-resistant bridge mechanism, the fire-resistant bridge mechanism comprising a fire-resistant cover body and a fire-resistant trough body with a cavity interlayer, a plurality of heat dissipation holes are evenly and linearly arranged on both sides of the outer wall of the fire-resistant trough body, a sealed heat dissipation pipe is arranged in each heat dissipation hole, a rectangular groove is arranged on both sides of the inner wall of the fire-resistant trough body, a supporting mesh plate is arranged in both rectangular grooves, a flow guide cover body is arranged on the upper side of the supporting mesh plate, a waterproof frame body is arranged in the flow guide cover body, and a plurality of cable clamps are evenly and linearly arranged in the waterproof frame, a heat-conducting sealing protection mechanism is arranged on the upper side of the outer wall of the flow guide cover body, the heat-conducting sealing protection mechanism comprises a thermal insulation shell, and the lower side of the outer wall of the thermal insulation shell is connected to the horizontal part of the upper side of the outer wall of the flow guide cover body;

[0007] A plurality of guide pipes are linearly arranged at equal intervals on both sides of the outer wall of the insulation shell in the thermal conductive sealing protection mechanism, and one end of each guide pipe away from the insulation shell is connected to the air interlayer of the refractory tank body, and a water storage chamber and an installation chamber are arranged in the insulation shell, and a U-shaped tank body is arranged in the water storage chamber, and multiple grooves on both sides of the U-shaped tank body are provided with spring pieces, and each spring piece is provided with a plug, which fits with the corresponding guide pipe, and a first opening is provided near one side of each plug, and an armature block is provided on one side of the U-shaped tank body, and a power box with a mobile power supply, an electric control switch and an iron core are arranged in the installation chamber, and a wire is wound around the iron core, and both ends of the wire are respectively connected to the power box and the electric control switch;

[0008] A T-shaped bracket is provided on the lower side of the armature block located in the installation cavity, and side panels are provided at both ends of the lower side of the T-shaped bracket. Multiple second openings are linearly provided at equal intervals on each side panel, and the second openings correspond to one end of the sealed heat dissipation tube.

[0009] Furthermore, the upper edge and the lower edge of each side plate are slidably connected with a rectangular slide groove, and the rectangular slide groove is arranged on the inner wall of the refractory tank body.

[0010] Furthermore, a sealing layer is provided on a side of each side plate close to the sealed heat dissipation pipe.

[0011] Furthermore, a temperature sensor is provided on one side of the upper surface of the outer wall of the thermal insulation shell, and the temperature sensor is electrically connected to the electric control switch.

[0012] Furthermore, the lower side of the inner wall of the refractory tank body is a curved surface that is concave toward the middle, and a water storage tank is provided in the middle position of the lower side of the inner wall of the refractory tank body, and multiple water holes are provided on both sides of the water storage tank, and the water holes are connected to the cavity interlayer of the refractory tank body.

[0013] Furthermore, threaded docking ports are provided on both sides of the outer wall of the water storage tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention improves the overall fireproof and heat-resistant performance of the bridge frame through the fireproof materials of the refractory trough body and the refractory cover body, and the hollow interlayer of the refractory trough body, thereby reducing the impact of the external environment on the cables laid inside the bridge frame. In addition, the cooperation between the supporting mesh plate, the guide cover body and the waterproof frame body improves the moisture-proof performance inside the bridge frame and prevents the cables from getting damp. If water droplets are formed by the alternation of cold and hot air inside the bridge frame, they will flow along the curved outer wall of the guide cover body to the water storage tank at the bottom of the refractory trough body, and then be led out through the threaded docking port without passing through the waterproof frame, thereby further protecting the cables inside the bridge frame.

[0016] (2) The present invention realizes that when a fire or abnormally high temperature is detected near the bridge frame, the power box, the electric control switch and the wire form a closed loop through the temperature sensor, the armature block, the power box, the electric control switch and the wire, so that the spiral wire and the iron core form an electromagnet to attract the armature block, and the armature block moves toward the iron core. At the same time, the armature block drives the T-shaped bracket and the U-shaped groove to move, so that the T-shaped bracket drives the side plate to move. The second opening on the side plate is offset from the sealed heat dissipation pipe, closing one end of the sealed heat dissipation pipe to prevent external heat from entering the interior of the bridge frame. At the same time, the U-shaped groove The plug on the body removes the guide pipe so that the first opening corresponds to one end of the guide pipe, so that the coolant enters the cavity interlayer of the refractory trough body through the guide pipe, absorbs the heat on the bridge itself, and takes it away to enter the water storage tank. Since the threaded interfaces on the refractory trough body of each bridge are interconnected, the coolant can be discharged from the outermost threaded interfaces in the multiple linearly laid bridges, avoiding heat accumulation inside the bridge and high temperature, further protecting the cables laid inside, and effectively preventing the cable insulation sheath and protective outer sheath from high-temperature aging, degeneration and coking.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the refractory tank body and the refractory cover body of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection structure of the air guide cover of the present invention;

[0021] Figure 4 It is a cross-sectional schematic diagram of the fire-resistant cover body of the present invention;

[0022] Figure 5It is a schematic diagram of the structure of the heat-conducting sealing protection mechanism of the present invention;

[0023] Figure 6 It is a top view cross-sectional schematic diagram of the internal structure of the thermal insulation shell of the present invention;

[0024] Figure 7 for Figure 2 A magnified schematic diagram of area A;

[0025] Figure 8 for Figure 6 Enlarged schematic diagram of area B.

[0026] Description of the drawings: 1. Refractory bridge mechanism; 11. Refractory tank body; 111. Heat dissipation hole; 112. Water storage tank; 113. Rectangular groove; 114. Water hole; 12. Refractory cover body; 13. Sealed heat dissipation pipe; 14. Threaded docking port; 15. Support mesh plate; 16. Guide cover body; 17. Waterproof frame; 18. Cable clamp; 19. Rectangular slide groove;

[0027] 2. Thermal sealing protection mechanism; 21. Insulating shell; 211. Water storage chamber; 212. Installation chamber; 22. Diversion pipe; 23. Temperature sensor; 24. U-shaped trough; 241. Shrapnel; 242. Plug; 243. First opening; 25. Armature block; 26. Power supply box; 261. Electric switch; 262. Wire; 263. Iron core; 264. Reset spring; 27. T-shaped bracket; 28. Side panel; 281. Sealing layer; 282. Second opening; 29. ​​Water inlet. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] Example 1, please refer to the attached Figure 1-8 As shown, a fire-resistant cable tray comprises a fire-resistant bridge mechanism 1, wherein the fire-resistant bridge mechanism 1 comprises a fire-resistant cover body 12 and a fire-resistant trough body 11 with a cavity interlayer, wherein a plurality of heat dissipation holes 111 are linearly arranged at equal intervals on both sides of the outer wall of the fire-resistant trough body 11, wherein each heat dissipation hole 111 is provided with a sealed heat dissipation pipe 13, wherein rectangular grooves 113 are arranged on both sides of the inner wall of the fire-resistant trough body 11, wherein a supporting mesh plate 15 is arranged in both rectangular grooves 113, wherein a guide cover body 16 is arranged on the upper side of the supporting mesh plate 15, and wherein the guide cover body 16 is provided on the upper side of the supporting mesh plate 15, ... A waterproof frame 17 is arranged in the flow cover body 16, and a plurality of cable clamps 18 are arranged linearly at equal intervals in the waterproof frame 17. A heat-conducting sealing protection mechanism 2 is arranged on the upper side of the outer wall of the flow guide cover body 16. The heat-conducting sealing protection mechanism 2 includes a heat-insulating shell 21. The lower side of the outer wall of the heat-insulating shell 21 is connected to the horizontal part of the upper side of the outer wall of the flow guide cover body 16. A plurality of guide pipes 22 are arranged linearly at equal intervals on both sides of the outer wall of the heat-insulating shell 21 in the heat-conducting sealing protection mechanism 2. Each guide pipe 22 is connected to the heat-insulating shell 21 at one end away from the heat-insulating shell 21. The air interlayer of the refractory tank body 11 is connected, and a water storage chamber 211 and an installation chamber 212 are arranged in the insulation shell 21. A U-shaped tank body 24 is arranged in the water storage chamber 211. Multiple grooves on both sides of the U-shaped tank body 24 are provided with spring pieces 241, and each spring piece 241 is provided with a plug 242. The plug 242 fits with the corresponding guide pipe 22, and a first opening 243 is arranged near one side of each plug 242. An armature block 25 is arranged on one side of the U-shaped tank body 24, and a first opening 243 is arranged near one side of each plug 242. A power box 26 with a mobile power supply, an electric switch 261 and an iron core 263 are provided, a wire 262 is wound around the iron core 263, and the two ends of the wire 262 are respectively connected to the power box 26 and the electric switch 261; a T-shaped bracket 27 is provided on the lower side of the armature block 25 located in the installation cavity 212, and side panels 28 are provided at both ends of the lower side of the T-shaped bracket 27, and a plurality of second openings 282 are linearly provided at equal intervals on each of the side panels 28, and the second opening 282 corresponds to one end of the sealed heat dissipation tube 13.

[0032] The above structure realizes that the heat dissipation holes 111 can be automatically closed by the heat-conducting sealing protection mechanism 2 in the event of a fire or abnormally high temperature, thereby preventing external heat from entering the interior of the bridge frame, and at the same time absorbing the heat on the bridge frame itself and taking it away, thereby avoiding heat accumulation and high temperature inside the bridge frame, further protecting the cables laid inside, and effectively preventing the cable insulation sheath and protective outer sheath from high-temperature aging, denaturation and coking.

[0033] The specific operation is as follows: when the temperature sensor 23 detects a fire near the bridge and an abnormally high temperature, the electric control switch 261 is turned on, so that the power box 26, the electric control switch 261 and the wire 262 form a closed loop. Since the spiral wire 262 and the iron core 263 form an electromagnet, the armature block 25 is attracted to move, and the armature block 25 moves toward the iron core 263. Then the armature block 25 drives the T-shaped bracket 27 and the U-shaped trough 24 to move, and the T-shaped bracket 27 drives the side plate 28 to move. The second opening 282 on the side plate 28 is misaligned with the sealed heat dissipation pipe 13, and the sealing layer 281 covers the sealed heat dissipation pipe 13, thereby sealing the sealed heat dissipation pipe 1 3, to prevent the outside heat from entering the inside of the bridge. With the movement of the U-shaped trough body 24, the plug 242 on the U-shaped trough body 24 removes the guide pipe 22, so that the first opening 243 corresponds to one end of the guide pipe 22. The coolant in the water storage chamber 211 enters the cavity interlayer of the refractory trough body 11 through the guide pipe 22, absorbs the heat on the bridge itself, and takes it away and enters the water storage tank 112. Since the bridge is laid linearly and the threaded joints 14 on the refractory trough body 11 of each bridge are connected to each other, the coolant will be discharged from the threaded joints 14 on the outermost refractory trough body 11, avoiding the heat accumulation inside the bridge and the high temperature.

[0034] Example 2, please refer to the attached Figure 2 , 4 As shown in Figure 5, a temperature sensor 23 is provided on one side of the upper surface of the outer wall of the thermal insulation shell 21, and the temperature sensor 23 is electrically connected to the electric control switch 261. Through the temperature sensor 23, the temperature near the bridge is detected. A water inlet 29 is provided near the side of the temperature sensor 23, and the water inlet 29 is connected to the water storage chamber 211. The lower side of the inner wall of the refractory tank body 11 is a curved surface recessed toward the middle, and a water storage tank 112 is provided in the middle position of the lower side of the inner wall of the refractory tank body 11, and a plurality of water holes 114 are provided on both sides of the water storage tank 112. The water holes 114 are connected to the cavity interlayer of the refractory tank body 11, and threaded docking interfaces 14 are provided on both sides of the outer wall of the water storage tank 112. Through the threaded docking interfaces 14, communication between different water storage tanks 112 is achieved.

[0035] Example 3, please refer to the attached Figure 5 , 6As shown in Figure 7, the upper and lower edges of each side panel 28 are slidably connected with a rectangular slide groove 19, and the rectangular slide groove 19 is arranged on the inner wall of the refractory trough body 11. Through the rectangular slide groove 19, the side panel 28 can be stably linearly moved and can be tightly matched with one end of the sealed heat dissipation tube 13. Each side panel 28 is provided with a sealing layer 281 on the side close to the sealed heat dissipation tube 13. The sealing layer 281 improves the tightness of the side panel 28 and the sealed heat dissipation tube 13. Two return springs 264 are arranged on one side of the armature block 25 located in the installation cavity 212. The end of each return spring 264 away from the armature block 25 is connected to the inner wall of the installation cavity 212. Through the return spring 264, when the electric control switch 261 is closed, the armature block 25 is pulled to reset.

[0036] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A fire-resistant cable tray, comprising a fire-resistant cable tray mechanism (1), characterized in that The fire-resistant bridge structure (1) comprises a fire-resistant cover body (12) and a fire-resistant trough body (11) with a cavity interlayer, a plurality of heat dissipation holes (111) are evenly spaced and linearly arranged on both sides of the outer wall of the fire-resistant trough body (11), each heat dissipation hole (111) is provided with a sealed heat dissipation pipe (13), and a rectangular groove (113) is provided on both sides of the inner wall of the fire-resistant trough body (11), and a supporting mesh plate (15) is provided in both rectangular grooves (113), and the supporting mesh plate ( 15) A flow guide cover (16) is arranged on the upper side, and a waterproof frame (17) is arranged inside the flow guide cover (16), and a plurality of cable clamps (18) are arranged linearly at equal intervals inside the waterproof frame (17), a heat-conducting sealing protection mechanism (2) is arranged on the upper side of the outer wall of the flow guide cover (16), and the heat-conducting sealing protection mechanism (2) comprises a thermal insulation shell (21), and the lower side of the outer wall of the thermal insulation shell (21) is connected to the horizontal part of the upper side of the outer wall of the flow guide cover (16); A plurality of guide pipes (22) are linearly arranged at equal intervals on both sides of the outer wall of the thermal insulation shell (21) in the thermal conductive sealing protection mechanism (2); one end of each guide pipe (22) away from the thermal insulation shell (21) is connected to the air layer of the refractory tank body (11); a water storage chamber (211) and an installation chamber (212) are arranged in the thermal insulation shell (21); a U-shaped tank body (24) is arranged in the water storage chamber (211); spring pieces (241) are arranged in the plurality of grooves on both sides of the U-shaped tank body (24); each spring piece (241) is provided with a A plug (242), the plug (242) being matched with the corresponding flow guide pipe (22), and a first opening (243) being provided on one side close to each of the plugs (242), an armature block (25) being provided on one side of the U-shaped trough (24), a power box (26) with a mobile power supply, an electric control switch (261) and an iron core (263) being provided in the installation cavity (212), a wire (262) being wound around the iron core (263), and two ends of the wire (262) being respectively connected to the power box (26) and the electric control switch (261); A T-shaped bracket (27) is provided on the lower side of the armature block (25) located in the installation cavity (212), and side plates (28) are provided at both ends of the lower side of the T-shaped bracket (27), and each of the side plates (28) is linearly provided with a plurality of second openings (282) at equal intervals, and the second openings (282) correspond to one end of the sealed heat dissipation pipe (13); The lower side of the inner wall of the refractory tank body (11) is a curved surface that is concave toward the middle, and a water storage tank (112) is provided at the middle position of the lower side of the inner wall of the refractory tank body (11), and a plurality of water holes (114) are provided on both sides of the water storage tank (112), the water holes (114) are connected to the cavity interlayer of the refractory tank body (11), and threaded docking interfaces (14) are provided on both sides of the outer wall of the water storage tank (112).

2. A fire-resistant cable tray according to claim 1, characterized in that: The upper edge and the lower edge of each side plate (28) are slidably connected to a rectangular slide groove (19), and the rectangular slide groove (19) is arranged on the inner wall of the refractory tank body (11).

3. A fire-resistant cable tray according to claim 2, characterized in that: A sealing layer (281) is provided on a side of each side plate (28) close to the sealed heat dissipation pipe (13).

4. A fire-resistant cable tray according to claim 1, characterized in that: Two return springs (264) are provided on one side of the portion of the armature block (25) located in the installation cavity (212), and one end of each return spring (264) away from the armature block (25) is connected to the inner wall of the installation cavity (212).

5. The fire-resistant cable tray according to claim 1, characterized in that: A temperature sensor (23) is provided on one side of the upper surface of the outer wall of the thermal insulation shell (21), and the temperature sensor (23) is electrically connected to the electric control switch (261).

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