Fireproof cable bridge

Abstract

The invention provides a fireproof cable bridge, and belongs to the technical field of bridges, the fireproof cable bridge comprises a bridge body and a cover plate, the fireproof cable bridge further comprises a plurality of strip-shaped shells, and each strip-shaped shell comprises an opening and closing plate and a thermosensitive glass body; discharge ports in one-to-one correspondence with the opening and closing plates are formed in the bottom of the strip-shaped shell, and one sides of the opening and closing plates are hinged to the strip-shaped shell; an air vent is formed in the position, opposite to the hinged side of the opening and closing plate, of the strip-shaped shell, and a sealing plate is inserted into the air vent; the thermosensitive glass bodies are in one-to-one correspondence with the opening and closing plates and are connected to the bottom of the strip-shaped shell through supporting frames, and the two ends of the thermosensitive glass bodies abut against the opening and closing plates and the supporting frames respectively; the outer sides of the sealing plates are connected with the corresponding opening and closing plates through fireproof ropes; after the thermosensitive glass body is broken, the opening and closing plate rotates around the hinge shaft to open the discharging opening and the ventilation opening, so that the fire extinguishing agent in the strip-shaped shell falls down; through the arrangement, a fire extinguishing agent can fall down from the discharging opening to cover an ignition area, and the effect of extinguishing fire in time is achieved.

Description

Technical Field

[0001] The present application belongs to the field of cable tray technology, and specifically relates to a fireproof cable tray. Background Art

[0002] A cable tray is a device used to carry and protect cables, and is usually divided into trough type, tray type and ladder type. Cable trays in the existing technology usually place multiple cables, and the distance between adjacent cables is relatively close. When a cable fire occurs, it is impossible to extinguish the fire in time. Summary of the Invention

[0003] The embodiment of the present application provides a fireproof cable tray, which aims to solve the problem in the prior art that the cable tray cannot extinguish the fire in time when the cable catches fire.

[0004] To achieve the above objectives, the technical solution adopted in this application is:

[0005] Provided is a fireproof cable tray, comprising a frame body and a cover plate. The fireproof cable tray further comprises a plurality of strip-shaped shells connected to the cover plate and corresponding to the cables one by one. Each strip-shaped shell comprises:

[0006] A plurality of opening and closing plates are arranged at intervals at the bottom of the strip shell along the length direction of the strip shell; the bottom of the strip shell has a discharge port corresponding to the opening and closing plates, and one side of the opening and closing plate is hinged to the strip shell; a vent is provided at a position opposite to the hinged side of the opening and closing plate, and a sealing plate is inserted into the vent;

[0007] A plurality of heat-sensitive glass bodies correspond to the opening and closing plates one by one and are connected to the bottom of the strip-shaped shell through a support frame, and the two ends of the heat-sensitive glass bodies are respectively in contact with the opening and closing plates and the support frame;

[0008] Among them, the outer side of the sealing plate is connected to the corresponding opening and closing plate through a fireproof rope; after the heat-sensitive glass body is broken, the opening and closing plate rotates around the hinge axis to open the discharge port and the vent, allowing the fire extinguishing agent in the strip shell to fall.

[0009] In one possible implementation, the vent is located on the side of the strip-shaped housing near the top, and the strip-shaped housing has a guide plate at the bottom of the vent. The fire rope passes around the outside of the guide plate and is connected to the opening and closing plate below.

[0010] When the opening and closing plate rotates around the hinge shaft, the fire rope provides an outward pulling force to the closing plate under the steering action of the guide plate.

[0011] In one possible implementation, the bottom of the opening and closing plate has a connecting rod, and the other end of the fire rope is tied to the connecting rod; or, the bottom of the opening and closing plate has a threaded hole, and the other end of the fire rope is tied to a bolt, and the bolt is threadedly matched with the threaded hole on the opening and closing plate.

[0012] In one possible implementation, the strip-shaped shell has a socket on the outside of the vent, the size of the socket is larger than the size of the vent, and the sealing plate is inserted into the socket; wherein, the depth of the socket is one-fourth of the depth of the vent, and the thickness of the sealing plate is the same as the depth of the socket.

[0013] In a possible implementation, the support frame includes:

[0014] The sleeve is located directly below the opening and closing plate; connecting rods are connected to both sides of the sleeve, and the other ends of the two connecting rods are connected to the opposite side walls of the strip shell; the inner diameter of the sleeve is larger than the maximum diameter of the heat-sensitive glass body so that the heat-sensitive glass body can pass through the sleeve;

[0015] An insert is connected to the opening and closing plate; the opening of the insert faces downward, and the insert is plugged into and matched with the top of the heat-sensitive glass body;

[0016] The tightening tube is plugged into the bottom of the heat-sensitive glass; the outer peripheral wall of the tightening tube has an external thread, and the inner peripheral wall of the sleeve has an internal thread;

[0017] Among them, the heat-sensitive glass body is pressed against the position between the insertion tube and the pressing tube by threaded cooperation between the pressing tube and the sleeve; the distance between the sleeve and the opening and closing plate is greater than the radius of rotation of the opening and closing plate around the hinge axis.

[0018] In a possible implementation, the top of the strip-shaped housing is a feed inlet, and the feed inlet is closed by a top plate;

[0019] The bottom of the top plate has a plug-in component, the outer peripheral wall of the plug-in component contacts the inner peripheral wall of the strip shell; the outer peripheral wall of the plug-in component has a plurality of threaded holes, and the strip shell has through holes aligned with the threaded holes on the plug-in component; the strip shell and the plug-in component are connected by bolts.

[0020] In a possible implementation, the cover plate is provided with L-shaped baffles on both sides of the top plate, and slots are formed between the L-shaped baffles and the cover plate, and the two sides of the top plate are respectively plugged into the two slots;

[0021] The bottom of the L-shaped baffle has several threaded holes, and the top plate has through holes aligned with the threaded holes of the L-shaped baffle; after the top plate is installed in place, the top plate is fixed to the L-shaped baffle by bolts.

[0022] In one possible implementation, the frame has a housing for accommodating cables, and the bottom of the housing has a plurality of partitions to separate adjacent cables; the partitions are conical in structure, with the top of the partition being the small end and the bottom being the large end;

[0023] When the fire extinguishing agent in the strip-shaped housing falls into the accommodating cavity, the partition plate can cause the fire extinguishing agent to accumulate at the location of the burning cable.

[0024] In a possible implementation, the discharge port is a stepped hole, and the opening and closing plate abuts against the bottom wall of the stepped hole.

[0025] In one possible implementation, the hinged side of the opening and closing plate has a through hole, and the strip shell also has a through hole at the hinged position of the opening and closing plate; after the hinged side of the opening and closing plate is placed into the corresponding position of the stepped hole, the hinge shaft is inserted from the outside of the strip shell, and the hinge shaft is plugged into and fitted with the through hole of the opening and closing plate.

[0026] The fireproof cable tray provided by the present application, compared with the existing technology, is a fireproof cable tray that is provided with a strip shell corresponding to the cable on the cover plate. After a fire occurs in the cable, the temperature inside the cable tray rises. When the temperature reaches the limit temperature of the heat-sensitive glass, the heat-sensitive glass will shatter. At this time, the opening and closing plate loses its supporting function, and the opening and closing plate swings outward under the action of its own gravity and the pressure of the fire extinguishing agent inside the strip shell. The fire extinguishing agent can fall downward from the discharge port, covering the fire area, and playing a role in timely extinguishing the fire; in the process of the opening and closing plate swinging outward, the opening and closing plate provides tension to the sealing plate through the fire rope. At this time, the sealing plate detaches from the strip shell under the tension of the fire rope, opens the air vent, balances the air pressure inside and outside the strip shell, and allows the fire extinguishing agent to fall more smoothly from the discharge port. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of a fireproof cable tray provided in an embodiment of the present application;

[0028] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0029] Figure 3 for Figure 2 A magnified schematic diagram of part B in the middle;

[0030] Figure 4 A cross-sectional view of a strip-shaped shell of a fireproof cable tray provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of a discharge port portion of a fireproof cable tray provided in an embodiment of the present application;

[0032] Figure 6 for Figure 5 Enlarged schematic diagram of the middle C part;

[0033] Figure 7 A schematic diagram of a vent portion of a fireproof cable tray provided in an embodiment of the present application;

[0034] Figure 8 A side view of a fireproof cable tray provided in an embodiment of the present application;

[0035] Figure 9 A schematic diagram of a cover plate portion of a fireproof cable tray provided in an embodiment of the present application;

[0036] Figure 10 for Figure 9 Enlarged schematic diagram of the middle D part;

[0037] Figure 11 A schematic diagram of the top plate portion of a fireproof cable tray provided in an embodiment of the present application.

[0038] Explanation of the accompanying reference numerals: 1. Frame; 11. Accommodating chamber; 12. Partition; 2. Cover plate; 21. L-shaped baffle; 3. Strip shell; 31. Discharge port; 32. Vent; 321. Insertion hole; 33. Closing plate; 34. Support frame; 341. Sleeve; 342. Insertion tube; 343. Tightening tube; 344. Connecting rod; 345. Cross groove; 35. Fire rope; 36. Guide plate; 37. Roller; 38. Feed port; 4. Opening and closing plate; 41. Connecting rod; 5. Heat-sensitive glass body; 6. Top plate; 61. Connecting component. DETAILED DESCRIPTION

[0039] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0040] Please also refer to Figures 1 to 11, now a fireproof cable bridge provided by the present application is described. The fireproof cable bridge comprises a frame 1 and a cover plate 2, and the fireproof cable bridge further comprises a plurality of strip shells 3 connected to the cover plate 2 and corresponding to the cables one by one, each strip shell 3 comprises a plurality of opening and closing plates 4 and a plurality of heat-sensitive glass bodies 5; the plurality of opening and closing plates 4 are arranged at intervals at the bottom of the strip shell 3 along the length direction of the strip shell 3; the bottom of the strip shell 3 has a discharge port 31 corresponding to the opening and closing plates 4, and one side of the opening and closing plates 4 is hinged to the strip shell 3; the strip shell 3 is hinged to the opening and closing plates 4 on the side thereof. There is a vent 32 at the right position, and a sealing plate 33 is inserted into the vent 32; a number of heat-sensitive glass bodies 5 correspond one-to-one to the opening and closing plates 4, and are connected to the bottom of the strip shell 3 through a support frame 34, and the two ends of the heat-sensitive glass body 5 are respectively in contact with the opening and closing plate 4 and the support frame 34; wherein, the outer side of the sealing plate 33 is connected to the corresponding opening and closing plate 4 through a fire rope 35; after the heat-sensitive glass body 5 is broken, the opening and closing plate 4 rotates around the hinge axis to open the discharge port 31 and the vent 32, so that the fire extinguishing agent in the strip shell 3 falls.

[0041] The fireproof cable tray provided in the present application, compared with the prior art, is a fireproof cable tray in which a strip shell 3 corresponding to the cable is arranged on the cover plate 2. After a fire occurs in the cable, the temperature inside the cable tray rises. When the temperature reaches the limit temperature of the heat-sensitive glass body 5, the heat-sensitive glass body 5 will shatter. At this time, the opening and closing plate 4 loses its supporting function. The opening and closing plate 4 swings outward under the action of its own gravity and the pressure of the fire extinguishing agent inside the strip shell 3. The fire extinguishing agent can fall downward from the discharge port 31, covering the fire area, and playing a role in timely extinguishing the fire; in the process of the opening and closing plate 4 swinging outward, the opening and closing plate 4 provides a pulling force to the closing plate 33 through the fire rope 35. At this time, the closing plate 33 detaches from the strip shell 3 under the pulling force of the fire rope 35, opens the air vent 32, balances the air pressure inside and outside the strip shell 3, and allows the fire extinguishing agent to fall more smoothly from the discharge port 31. When a fire occurs, one or more of the heat-sensitive glass bodies 5 located in the fire area shatters, the opening and closing plate 4 swings downward, and the discharge port 31 is opened, and the fire extinguishing agent in the strip shell 3 can fall from the discharge port 31 in the fire area and cover the fire area, thereby completing the fire extinguishing process. It should be noted that the fire extinguishing agent above the opening and closing plate in the closed state in the strip shell 3 will also flow to the discharge port 31 in the fire area as the fire extinguishing agent in the fire area falls, that is, it flows horizontally in the strip shell 3, thereby achieving most of the fire extinguishing agent in the strip shell 3 falling from the discharge port 31 in the fire area, facilitating the coverage of the fire area.

[0042] The thermosensitive glass body 5 includes a glass shell and a thermosensitive liquid filled inside the glass shell. The thermosensitive liquid is an expansion liquid, such as kerosene, ether, alcohol, acetone, glycerin and other organic solutions. These liquids have a high thermal expansion coefficient and are sensitive to temperature changes. In order to improve the performance of the thermosensitive liquid, some additives may be added, such as tetrachloroethylene, esters of ketone carboxylic acid tracers, and simple low ketones. In this application, the maximum temperature that the thermosensitive glass body can withstand is 68°C or 79°C.

[0043] The working principle of the thermosensitive glass body 5: Under normal circumstances, the thermosensitive glass body 5 is located between the opening and closing plate 4 and the support frame 34, supporting the opening and closing plate 4; the heat-sensitive liquid in the thermosensitive glass body 5 is in an unexpanded state, and the glass shell of the thermosensitive glass body 5 can withstand a certain supporting force to ensure that the opening and closing plate 4 is in a closed state; when a fire occurs, the temperature of the cable tray rises, and the heat-sensitive liquid in the thermosensitive glass body 5 at the corresponding position expands rapidly with the temperature increase, and the volume gradually increases; when the limit pressure that the glass shell can withstand is reached, the thermosensitive glass body 5 breaks, and the opening and closing plate 4 loses support. The opening and closing plate 4 can swing downward around the hinge axis to open the discharge port 31.

[0044] The fire extinguishing agent in the strip-shaped shell 3 can be a dry powder fire extinguishing agent or dry sand. When the fire extinguishing agent in the strip-shaped shell 3 is a dry powder fire extinguishing agent, the dry powder fire extinguishing agent in the strip-shaped shell 3 needs to be replaced regularly.

[0045] The fire rope 35 can be made of aramid fiber. The purpose of connecting the sealing plate 33 and the opening and closing plate 4 with the fire rope 35 is to reduce the possibility of the fire rope 35 burning out. If the fire rope 35 burns out, the opening and closing plate 4 will not be able to pull off the sealing plate 33 after swinging downward, and the fire extinguishing agent will not fall smoothly from the discharge port 31. It should be noted that when the sealing plate 33 is not opened, the fire extinguishing agent in the strip-shaped housing 3 will also fall downward.

[0046] In some embodiments, as Figures 1 to 11 As shown, the frame 1 has a receiving cavity 11 for placing cables, and the bottom of the receiving cavity 11 has a plurality of partitions 12 to separate adjacent cables; the partitions 12 are conical structures, with the top of the partition 12 being the small end and the bottom being the large end; wherein, when the fire extinguishing agent in the strip-shaped shell 3 falls into the receiving cavity 11, the partitions 12 can cause the fire extinguishing agent to accumulate at the location of the burning cable.

[0047] It should be noted that separating adjacent cables by the partition 12 can reduce the contact between adjacent cables, thereby reducing the rapid spread of fire between different cables, which helps to control the scope of the fire; when a fire occurs, the fire extinguishing agent in the strip shell 3 falls on the cable fire area and extinguishes the fire in the fire area; when the fire extinguishing agent falls on the partition 12, the fire extinguishing agent can slide along the inclined surface of the partition 12 and eventually accumulate around the cable, thereby covering the cable fire area; the partition 12 is set to a conical structure, and the partition 12 can guide the fire extinguishing agent, thereby improving the fire extinguishing effect of the fire extinguishing agent.

[0048] In some embodiments, as Figures 1 to 11 As shown, the vent 32 is located on the side of the strip-shaped housing 3, near the top. A guide plate 36 is provided on the outside of the strip-shaped housing 3, at the bottom of the vent 32. A fire rope 35 passes around the outside of the guide plate 36 and connects to the opening and closing plate 4 below. When the opening and closing plate 4 rotates about the hinge axis, the fire rope 35, under the deflection of the guide plate 36, applies an outward pulling force to the closing plate 33. The upper surface of the guide plate 36 is coplanar with the lower surface of the closing plate 33. The fire rope 35 is perpendicular to the closing plate 33. When the fire rope 35 applies horizontal pulling force to the closing plate 33, it can pull the closing plate 33 away from the vent 32.

[0049] It should be noted that the air vent 32 is set near the top of the strip shell 3. During the process of the fire extinguishing agent in the strip shell 3 being discharged from the discharge port 31, external air can enter the interior of the strip shell 3 from the air vent 32, balancing the air pressure inside and outside the strip shell 3, and ensuring that the fire extinguishing agent in the strip shell 3 can be discharged smoothly from the discharge port 31.

[0050] By arranging a guide plate 36 on the strip shell 3, the direction of the pulling force of the fire rope 35 on the sealing plate 33 can be reversed; when the opening and closing plate 4 swings downward, the pulling force of the fire rope 35 on the sealing plate 33 is in an outward pulling state, thereby pulling the sealing plate 33 out from the vent 32 position.

[0051] Exemplarily, a roller 37 is rotatably provided on the outer side of the guide plate 36, and the top of the roller 37 is at the same height as the top of the guide plate 36, and the fire rope 35 rotates in coordination with the roller 37; when the fire rope 35 pulls the sealing plate 33 outward, there is rolling friction between the fire rope 35 and the roller 37, which can reduce the frictional resistance between the fire rope 35 and the guide plate 36; there are two guide plates 36, which are respectively arranged at both ends of the roller 37, and the two guide plates 36 respectively have through holes for the rotating shaft of the roller 37 to pass through; the rotating shaft diameter of the roller 37 is smaller than the diameter of the roller 37, so the roller 37 can be confined between the two guide plates 36.

[0052] For example, in the initial state, the fire rope 35 does not provide tension to the sealing plate 33 ; after the opening and closing plate 4 swings downward, the fire rope 35 is tightened and provides tension to the sealing plate 33 , pulling the sealing plate 33 away from the vent 32 .

[0053] In some embodiments, as Figures 1 to 11 As shown, the bottom of the opening and closing plate 4 has a connecting rod 41, and the other end of the fire rope 35 is tied to the connecting rod 41; or, the bottom of the opening and closing plate 4 has a threaded hole, and the other end of the fire rope 35 is tied to a bolt, and the bolt is threadedly matched with the threaded hole on the opening and closing plate 4.

[0054] When a connecting rod 41 is fixedly provided at the bottom of the opening and closing plate 4, the other end of the fire rope 35 can be directly tied to the connecting rod 41; when the opening and closing plate 4 closes the discharge port 31, the fire rope 35 does not provide a pulling force to the sealing plate 33; when the opening and closing plate 4 rotates downward, the fire rope 35 provides a pulling force to the sealing plate 33 to separate the sealing plate 33 from the vent 32.

[0055] When a threaded hole is provided at the bottom of the opening and closing plate 4, the other end of the fire rope 35 can be tied to the bolt. By means of the threaded cooperation between the bolt and the opening and closing plate 4, the other end of the fire rope 35 can be connected to the opening and closing plate 4; when the opening and closing plate 4 swings downward, the fire rope 35 can pull the sealing plate 33 away from the vent 32.

[0056] In some embodiments, as Figures 1 to 11 As shown, the strip-shaped shell 3 has a socket 321 on the outside of the vent 32. The size of the socket 321 is larger than the size of the vent 32, and the sealing plate 33 is inserted into the socket 321; wherein, the depth of the socket 321 is one-fourth of the depth of the vent 32, and the thickness of the sealing plate 33 is the same as the depth of the socket 321.

[0057] It should be noted that the thickness of the sealing plate 33 is the same as the depth of the insertion hole 321, so the thickness of the sealing plate 33 is equivalent to one-fifth of the thickness of the side wall of the strip shell 3; through the above setting, the insertion depth of the sealing plate 33 is not deep, so after the fire rope 35 provides an outward pulling force on the sealing plate 33, it is easy to separate the sealing plate 33 from the insertion hole 321.

[0058] Since the size of the insertion hole 321 is larger than that of the vent 32, the sealing plate 33 can be confined in the insertion hole 321, reducing the insertion depth of the sealing plate 33; when the sealing plate 33 is pulled outward, it is easy to pull the sealing plate 33 out.

[0059] In some embodiments, as Figures 1 to 11As shown, the support frame 34 includes a sleeve 341, an inserting sleeve 342 and a tightening sleeve 343; the sleeve 341 is located just below the opening and closing plate 4; connecting rods 344 are connected to both sides of the sleeve 341, and the other ends of the two connecting rods 344 are connected to the opposite side walls of the strip shell 3; the inner diameter of the sleeve 341 is larger than the maximum diameter of the heat-sensitive glass body 5 so that the heat-sensitive glass body 5 can pass through the sleeve 341; the inserting sleeve 342 is connected to the opening and closing plate 4; the opening of the inserting sleeve 342 faces downward, and the inserting sleeve 342 and the heat-sensitive glass body 5 are respectively connected. The top is plug-in fitted; the clamping tube 343 is plug-in fitted with the bottom of the thermosensitive glass; the outer peripheral wall of the clamping tube 343 has an external thread, and the inner peripheral wall of the sleeve 341 has an internal thread; wherein, the thermosensitive glass body 5 is clamped to the position between the inserting tube 342 and the clamping tube 343 through the threaded fit of the clamping tube 343 and the sleeve 341; the distance between the sleeve 341 and the opening and closing plate 4 is greater than the radius of rotation of the opening and closing plate 4 around the hinge axis, so during the swinging process of the opening and closing plate 4, the sleeve 341 does not interfere with the opening and closing plate 4.

[0060] It should be noted that when the opening and closing plate 4 is rotated to a horizontal position, the discharge port 31 at the bottom of the strip shell 3 of the opening and closing plate 4 seals the plate 33. At this time, the thermosensitive glass body 5 can pass through the sleeve 341, and the top of the thermosensitive glass body 5 is plugged into and matched with the insert sleeve 342 on the opening and closing plate 4; through the threaded cooperation of the tightening tube 343 and the sleeve 341, and the plug-in cooperation of the tightening tube 343 and the bottom of the thermosensitive glass body 5, the thermosensitive glass body 5 can be limited while gradually being installed to the position of tightening the opening and closing plate 4.

[0061] The bottom of the clamping cylinder 343 has a cross-shaped groove 345. The operator inserts the cross-shaped plate into the cross-shaped groove 345 and rotates the cross-shaped plate to drive the clamping cylinder 343 to rotate, thereby rotating the clamping cylinder 343 into place. At this time, the thermosensitive glass body 5 is in a state of being pressed against the opening and closing plate 4.

[0062] In some embodiments, as Figures 1 to 11 As shown, the top of the strip shell 3 is the feed port 38, and the feed port 38 is closed by the top plate 6; wherein, the bottom of the top plate 6 has a plug-in component 61, and the outer peripheral wall of the plug-in component 61 contacts the inner peripheral wall of the strip shell 3; the outer peripheral wall of the plug-in component 61 has a plurality of threaded holes, and the strip shell 3 has a through hole aligned with the threaded holes on the plug-in component 61; the strip shell 3 and the plug-in component 61 are connected by bolts.

[0063] It should be noted that after the discharge port 31 at the bottom of the strip shell 3 is closed by the opening and closing plate 4, the fire extinguishing agent is poured into the strip shell 3 from the feed port 38 at the top of the strip shell 3, and the height of the fire extinguishing agent is lower than the height of the vent 32; when the fire extinguishing agent is poured, the plug-in component 61 is plugged into the feed port 38, and the plug-in component 61 and the strip shell 3 are fixed by bolts; after the top plate 6 is fixed on the strip shell 3, the top plate 6 is fixed on the cover plate 2; the length of the strip shell 3 is the same as the length of the cover plate 2, and a plurality of cover plates 2 are provided on the frame 1 to close the top of the frame 1.

[0064] In some embodiments, as Figures 1 to 11 As shown, L-shaped baffles 21 are respectively provided on both sides of the top plate 6 on the cover plate 2, and slots are formed between the L-shaped baffle 21 and the cover plate 2, and the two sides of the top plate 6 are respectively plugged into the two slots; wherein, the bottom of the L-shaped baffle 21 has a plurality of threaded holes, and the top plate 6 has through holes aligned with the threaded holes of the L-shaped baffle 21; after the top plate 6 is installed in place, the top plate 6 is fixed to the L-shaped baffle 21 by bolts.

[0065] It should be noted that the two sides of the top plate 6 are respectively inserted into the slots, and the through holes on the top plate 6 are aligned with the threaded holes at the bottom of the L-shaped baffle 21. At this time, the top plate 6 can be fixed to the L-shaped baffle 21 by bolts, completing the operation of fixing the strip shell 3 to the cover plate 2.

[0066] In some embodiments, as Figures 1 to 11 As shown, the discharge port 31 is a stepped hole, and the opening and closing plate 4 abuts against the bottom wall of the stepped hole; the hinged side of the opening and closing plate 4 has a through hole, and the strip shell 3 also has a through hole at the hinged position of the opening and closing plate 4; after the hinged side of the opening and closing plate 4 is placed into the corresponding position of the stepped hole, the hinge shaft is inserted from the outside of the strip shell 3, and the hinge shaft is plugged into the through hole of the opening and closing plate 4.

[0067] It should be noted that by setting the discharge port 31 as a stepped hole and placing the opening and closing plate 4 into the stepped hole, the opening and closing plate 4 can be limited, thereby reducing the displacement of the opening and closing plate 4; by setting through holes on the opening and closing plate 4 and the strip shell 3, after the opening and closing plate 4 is placed in place, the hinge shaft can be plugged into and matched with the through hole on the strip shell 3, so that the hinge shaft can pass through the through hole on the opening and closing plate 4, and then the opening and closing plate 4 can be rotated around the hinge shaft; after the fire extinguishing agent in the strip shell 3 is used, if the strip shell 3 is not burned, the strip shell 3 can be reused.

[0068] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A fireproof cable tray, comprising a frame and a cover plate, characterized in that: The fireproof cable tray also includes a number of strip-shaped shells connected to the cover plate and corresponding to the cables one by one. Each strip-shaped shell includes: A plurality of opening and closing plates are arranged at intervals at the bottom of the strip shell along the length direction of the strip shell; the bottom of the strip shell has a discharge port corresponding to the opening and closing plates, and one side of the opening and closing plate is hinged to the strip shell; a vent is provided at a position opposite to the hinged side of the opening and closing plate, and a sealing plate is inserted into the vent; A plurality of heat-sensitive glass bodies correspond to the opening and closing plates one by one and are connected to the bottom of the strip-shaped shell through a support frame, and the two ends of the heat-sensitive glass bodies are respectively in contact with the opening and closing plates and the support frame; Among them, the outer side of the sealing plate is connected to the corresponding opening and closing plate through a fireproof rope; after the heat-sensitive glass body is broken, the opening and closing plate rotates around the hinge axis to open the discharge port and the vent, allowing the fire extinguishing agent in the strip shell to fall.

2. A fireproof cable tray according to claim 1, characterized in that: The vent is located on the side of the strip shell near the top. The strip shell has a guide plate at the bottom of the vent. The fire rope passes around the outside of the guide plate and is connected to the opening and closing plate below. When the opening and closing plate rotates around the hinge shaft, the fire rope provides an outward pulling force to the closing plate under the steering action of the guide plate.

3. A fireproof cable tray according to claim 1, characterized in that: The bottom of the opening and closing plate has a connecting rod, and the other end of the fire rope is tied to the connecting rod; or, the bottom of the opening and closing plate has a threaded hole, and the other end of the fire rope is tied to a bolt, and the bolt is threadedly matched with the threaded hole on the opening and closing plate.

4. A fireproof cable tray according to claim 1, characterized in that: The strip-shaped shell has a socket on the outside of the vent, the size of the socket is larger than the size of the vent, and the sealing plate is inserted into the socket; wherein the depth of the socket is one-fourth of the depth of the vent, and the thickness of the sealing plate is the same as the depth of the socket.

5. A fireproof cable tray according to claim 1, characterized in that: The support frame comprises: The sleeve is located directly below the opening and closing plate; connecting rods are connected to both sides of the sleeve, and the other ends of the two connecting rods are connected to the opposite side walls of the strip shell; the inner diameter of the sleeve is larger than the maximum diameter of the heat-sensitive glass body so that the heat-sensitive glass body can pass through the sleeve; An insert is connected to the opening and closing plate; the opening of the insert faces downward, and the insert is plugged into and matched with the top of the heat-sensitive glass body; The tightening tube is plugged into the bottom of the heat-sensitive glass; the outer peripheral wall of the tightening tube has an external thread, and the inner peripheral wall of the sleeve has an internal thread; Among them, the heat-sensitive glass body is pressed against the position between the insertion tube and the pressing tube by threaded cooperation between the pressing tube and the sleeve; the distance between the sleeve and the opening and closing plate is greater than the radius of rotation of the opening and closing plate around the hinge axis.

6. A fireproof cable tray according to claim 1, characterized in that: The top of the strip-shaped shell is a feed inlet, which is closed by a top plate; The bottom of the top plate has a plug-in component, the outer peripheral wall of the plug-in component contacts the inner peripheral wall of the strip shell; the outer peripheral wall of the plug-in component has a plurality of threaded holes, and the strip shell has through holes aligned with the threaded holes on the plug-in component; the strip shell and the plug-in component are connected by bolts.

7. A fireproof cable tray according to claim 6, characterized in that: The cover plate is provided with L-shaped baffles on both sides of the top plate, and slots are formed between the L-shaped baffles and the cover plate, and the two sides of the top plate are respectively plugged into the two slots; The bottom of the L-shaped baffle has several threaded holes, and the top plate has through holes aligned with the threaded holes of the L-shaped baffle; after the top plate is installed in place, the top plate is fixed to the L-shaped baffle by bolts.

8. The fireproof cable tray according to claim 1, characterized in that: The frame has a housing for accommodating cables, and the bottom of the housing has a plurality of partitions to separate adjacent cables; the partitions are conical in structure, with the top of the partition being the small end and the bottom being the large end; When the fire extinguishing agent in the strip-shaped housing falls into the accommodating cavity, the partition plate can cause the fire extinguishing agent to accumulate at the location of the burning cable.

9. The fireproof cable tray according to claim 1, characterized in that: The discharge port is a stepped hole, and the opening and closing plate abuts against the bottom wall of the stepped hole.

10. A fireproof cable tray according to claim 9, characterized in that: The hinged side of the opening and closing plate has a through hole, and the strip shell also has a through hole at the hinged position of the opening and closing plate; after the hinged side of the opening and closing plate is placed into the corresponding position of the stepped hole, the hinge shaft is inserted from the outside of the strip shell, and the hinge shaft is plugged into and matched with the through hole of the opening and closing plate.

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