Aluminum alloy bridge capable of inserting cables in classified manner

Abstract

The invention relates to the technical field of cable installation, and provides an aluminum alloy bridge capable of inserting cables in a classified manner, and the bridge is internally provided with uniformly distributed partition plates, so that different cables can be installed in spaces separated by the partition plates in a classified manner, the problem that different cables in the same bridge are stacked and entangled is solved, and the cable insertion efficiency is improved. When the cable is burnt, the cable is burnt on the partition plate, the wax layer in the partition plate is heated to be softened and is gradually melted into a liquid state from a solid state, the partition plate loses the support of the solid wax layer and is driven by the gravity of the gravity rod to fall downwards, the burning cable is wrapped with the flame-retardant cloth II on the partition plate, and therefore the flame-retardant effect on the burning cable is achieved; and the wax layers in the adjacent partition plates are softened at a high temperature, fall down along with the falling of the gravity rod and wrap the adjacent unburned cables, so that the flame is prevented from being in direct contact with the adjacent unburned cables, and the situation that the adjacent cables are ignited by the flame is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of cable installation, and in particular to an aluminum alloy bridge capable of classifying and inserting cables. Background Art

[0002] A rigid structural system that closely supports cables and is composed of trough-type, tray-type or stepped straight sections, elbows, tees, cross-section components, supports (arm-type brackets), hangers, etc. is called a cable tray. Most of the cable trays are made of lightweight aluminum alloy and have the physical characteristics of corrosion resistance, moisture resistance, good adhesion and high impact resistance.

[0003] The existing bridge is generally in the shape of a long rectangle with a recessed space. The recessed space is used to carry cables. After the cables are installed inside the bridge, a cover is placed on the top of the bridge to protect the cables. Multiple cables are often carried in the same bridge, which makes it easy for multiple cables to become entangled with each other in the bridge, which is not conducive to the arrangement of the cables and is prone to heat accumulation, increasing the probability of fire. Once one of the cables is ignited, the entangled cables can easily be ignited by the flame, causing a chain reaction and accelerating the spread of the flame.

[0004] To this end, many businesses will weld partitions inside the bridge to divide the inside of the bridge into multiple separate spaces, and place different types of cables in different separate spaces to distinguish them. However, this will result in small separate spaces inside the bridge, which is not conducive to the heat dissipation of the cables. When the cables overheat and burn, the small space will cause the flames to spread rapidly and transfer the high temperature to the adjacent small spaces, causing the adjacent cables to quickly overheat and fail, and even causing adjacent cables to spontaneously combust at high temperatures. This still cannot solve the problem of cable fires. Summary of the invention

[0005] The present application proposes an aluminum alloy bridge frame that can classify and insert cables. The bridge frame has partition boards that separate the cables for classification. External air enters the space separated by the partition boards through ventilation holes to dissipate the heat of the cables. The different temperatures emitted by different cables form an air pressure difference to form air flow. When the cables burn, the wax layer in the partition boards will melt, causing the partition boards to deform and wrap around the cables. The deformation of the partition boards will squeeze the sealing plates to block the ventilation holes, preventing air from contacting the burning cables. The advantages of this bridge frame are to solve the problems of cable accumulation in existing bridges and rapid spread of fire in the event of a fire.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: an aluminum alloy bridge frame capable of classifying and inserting cables, comprising a U-shaped frame, wherein the bottom end of the inner cavity of the U-shaped frame is provided with evenly distributed partition plates, and cables are placed between adjacent partition plates for separating different types of cables; the partition plate comprises a metal positioning plate fixed at the bottom end of the inner cavity of the U-shaped frame, flame-retardant cloth I and flame-retardant cloth II arranged on the metal positioning plate, a gravity rod arranged at one end of the flame-retardant cloth I and flame-retardant cloth II away from the metal positioning plate, and a wax layer filled between the flame-retardant cloth I and flame-retardant cloth II for maintaining the initial shape of the partition board; the cross-section of the partition board is hook-shaped and covers the top of the cable to guide the flow direction of the airflow, and the gravity rod is located at the downwardly bent position of the top end of the hook of the partition board to guide the deformation direction of the partition board after the wax layer melts.

[0007] Preferably, a cover plate is placed at the top opening of the U-shaped frame to close the top opening of the U-shaped frame and protect the cables.

[0008] Preferably, the bottom end of the U-shaped frame is provided with evenly distributed falling holes, the width of which is greater than the diameter of the gravity rod, so as to provide space for the gravity rod to fall and holes for air flow.

[0009] Preferably, the bottom end of the U-shaped frame is located below the cable and is provided with evenly distributed ventilation holes for guiding external air into the U-shaped frame to dissipate heat for the cable.

[0010] Preferably, the bottom end of the U-shaped frame is provided with evenly distributed sliding grooves, a sealing plate is sleeved in the sliding grooves, and the sealing plate is provided with evenly distributed connecting holes, which are connected to the ventilation holes to guide air into the U-shaped frame, or to close the ventilation holes to prevent air from entering the U-shaped frame.

[0011] Preferably, one end of the sealing plate extends into the falling hole, and an inclined surface is provided on the top of the end of the sealing plate for contacting the falling gravity rod.

[0012] Preferably, there is a gap between one end of the sealing plate away from the falling hole and one end of the sliding groove away from the falling hole, so as to provide space for the sealing plate to move when being pushed by the gravity rod.

[0013] Preferably, the flame retardant cloth II is in a relaxed state, and the melted liquid wax is used to expand the flame retardant cloth II to fit the cable.

[0014] This application has the following beneficial effects:

[0015] The present application provides an aluminum alloy bridge frame that can classify and insert cables. By arranging evenly distributed partition boards in the bridge frame, different cables can be installed in a classified manner in the spaces separated by the partition boards, so that different cables in the same bridge frame will not be piled up and entangled. At the same time, evenly distributed ventilation holes are opened at the bottom end of the U-shaped frame, and in the spaces separated by different partition boards, a temperature difference will be formed due to the different temperatures generated by different cables, thereby forming an air pressure difference, so that the outside air flow can enter the space separated by the partition boards through the ventilation holes, and the air flow flows under the air pressure difference, so that the cables can obtain a stronger heat dissipation effect.

[0016] At the same time, when the cable burns, it will burn on the partition board, causing the wax layer inside the partition board to soften due to the heat and gradually melt from solid to liquid, causing the partition board to lose the support of the solid wax layer, and under the gravity of the gravity rod, it will hang down, so that the flame retardant cloth II on the partition board is wrapped around the burning cable, thereby flame retardant the burning cable and delaying the spread of the fire. The wax layer in the adjacent partition board will also soften at high temperature, follow the fall of the gravity rod and hang down and wrap around the adjacent unburned cable, avoiding direct contact between the flame and the adjacent unburned cable, and the adjacent cable will not be ignited by the flame.

[0017] At the same time, when the gravity rod falls, it will contact the cable, causing the cable to move toward the metal positioning plate, and the flame retardant cloth II is in a relaxed state. After the wax layer melts into liquid, it will gather to the bottom of the partition board. At this time, the end of the flame retardant cloth II connected to the gravity rod is at the bottom, and the side of the flame retardant cloth II connected to the metal positioning plate is also at the bottom, so the liquid wax will gather at these two places, so that the liquid wax expands the flame retardant cloth II and completely wraps the cable for physical sealing, further hindering the burning speed of the flame, and even extinguishing the fire.

[0018] At the same time, when the gravity rod falls downward, it will hit the sealing plate, causing the sealing plate to move away from the gravity rod, so that the connecting hole and the ventilation hole on the sealing plate are staggered, and the gravity rod fits the sealing plate, and the flame retardant cloth II that expands near the gravity rod will close the space between the falling hole and the cable, thereby closing the hole that supplies air to the cable, and the flame retardant cloth II wraps the cable to perform physical sealing, further hindering the burning speed of the flame, and even extinguishing the fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0020] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0021] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the U-shaped frame structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the cover plate structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the partition board structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure distribution of the present invention;

[0026] Figure 6 It is a schematic diagram of the state of the partition board after deformation of the present invention;

[0027] Figure 7 It is a schematic diagram of the sealing plate structure of the present invention.

[0028] Reference numerals:

[0029] 1. U-shaped frame; 2. Ventilation hole; 3. Sliding groove; 4. Sealing plate; 41. Connecting hole; 42. Inclined surface; 5. Falling hole; 6. Cable; 7. Cover plate; 8. Metal positioning plate; 9. Flame retardant cloth I; 10. Flame retardant cloth II; 11. Gravity rod; 12. Wax layer. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] Embodiment 1

[0032] See also Figures 1 to 3 , an aluminum alloy bridge capable of classifying and inserting cables, comprising a U-shaped frame 1, the cross-section of the U-shaped frame 1 is concave, the concave cross-section will be used to place cables 6, a cover plate 7 is placed at the top opening of the U-shaped frame 1, the top opening of the U-shaped frame 1 is closed by the cover plate 7 to protect the cables 6 in the U-shaped frame 1, and a uniformly distributed partition plate is fixedly connected to the bottom end of the inner cavity of the U-shaped frame 1, and different cables 6 are placed between adjacent partition plates. Different cables 6 are classified and installed in the space separated by the partition plates through the partition plates, so that different cables 6 in the same U-shaped frame 1 will not be piled up and entangled, and when one of the cables 6 burns, the partition plate can prevent the flame from contacting the adjacent cables 6, thereby delaying the spread of the fire.

[0033] See also Figure 1 , Figures 4 to 6 The partition plate includes a metal positioning plate 8, a flame retardant cloth I9, a flame retardant cloth II10, a gravity rod 11 and a wax layer 12. The cross section of the metal positioning plate 8 is L-shaped. The metal positioning plate 8 is fixedly connected to the bottom end of the inner cavity of the U-shaped frame 1 by bolts, so that the position of the entire partition plate can be fixed by the metal positioning plate 8. One end of the flame retardant cloth I9 is ​​fixedly connected to the top of the metal positioning plate 8, and one end of the flame retardant cloth II10 is fixedly connected to the bottom end of the metal positioning plate 8. Through the flexible characteristics of the flame retardant cloth I9 and the flame retardant cloth II10, the shape of the partition plate can be adjusted according to the actual situation, and in the event of a cable 6 During combustion, the flame retardant properties of the flame retardant cloth can hinder the spread of flames, and provide the possibility of flexible deformation for the subsequent deformation of the partition plate to wrap the cable 6. The ends of the flame retardant cloth I9 and the flame retardant cloth II10 away from the metal positioning plate 8 are fixedly connected to the gravity rod 11. The gravity rod 11 is cylindrical, so that when a fire occurs and the wax layer 12 softens or melts, the gravity rod 11 can pull the flame retardant cloth I9 and the flame retardant cloth II10 to wrap around the cable 6 under the drive of its own weight, thereby reducing the space where the flame can burn and reducing the oxygen supply, and even directly covering the burning point to perform a flame retardant effect.

[0034] See also Figure 1 , Figures 4 to 6 , the wax layer 12 is filled in the space between the flame retardant cloth I9 and the flame retardant cloth II10, and the bottom end of the wax layer 12 squeezes the bottom of the flame retardant cloth II10 to horizontally fit the bottom end of the inner cavity of the U-shaped frame 1, the cross-section of the partition board is hook-shaped and covers the top of the cable 6, and the gravity rod 11 is located at the position where the top of the partition board hook is bent downward, so that the wax layer 12 is solid in the initial state and can form a specific shape, maintain the initial position of the gravity rod 11, and make the entire partition board form a specific shape, so that the flame retardant cloth I9 and the flame retardant cloth II10 at this time can be located above the cable 6, not in direct contact with the cable 6, to avoid the flame retardant cloth II10 directly contacting the cable 6 when no fire occurs, resulting in poor heat dissipation effect of the cable 6, the wax of the wax layer 12 can be made of honey Wax or plant wax. In a higher temperature environment, aromatic hydrocarbon wax or mineral wax can be used. The softening point of beeswax or plant wax is above 50 degrees, while the softening point of aromatic hydrocarbon wax or mineral wax is above 70 degrees. Under normal heating of the cable 6 or in high temperature weather, the flame retardant cloth Ⅱ10 has a certain heat insulation effect, and the wax layer 12 will not soften or melt. Only when the cable 6 is burning, sufficient heat will be transferred to the wax layer 12 through the flame retardant cloth Ⅱ10. The high temperature causes the wax layer 12 to soften and melt quickly, causing the partition board to lose the support of the solid wax layer 12, and under the gravity of the gravity rod 11, it droops downward, so that the flame retardant cloth Ⅱ10 on the partition board is wrapped around the burning cable 6, thereby flame retardantly acting on the burning cable 6 and delaying the spread of the fire.

[0035] See also Figure 1 to Figure 2 , Figures 5 and 6The bottom end of the U-shaped frame 1 is provided with evenly distributed falling holes 5, and the width of the falling holes 5 is greater than the diameter of the gravity rod 11, so that the outside air can enter the U-shaped frame 1 through the falling holes 5 to dissipate the heat of the cable 6 normally. When the gravity rod 11 is falling, the gravity rod 11 will fall into the falling holes 5 without being hindered and continue to fall, so that the flame-retardant cloth II 10 can be wrapped around the cable 6. It is worth noting that when the gravity rod 11 falls, it will contact the cable 6, and the pulled flame-retardant cloth II 10 will also push the cable 6, so that the cable 6 moves toward the direction of the metal positioning plate 8.

[0036] It is worth noting that the U-shaped frame 1 is assembled together in sections, and the length of the U-shaped frame 1 is the length of the partition board, that is to say, the partition board is also assembled in sections. In other words, when the cable 6 burns, only a section of the partition board at the burning point of the cable 6 will soften and deform to wrap around the burning cable 6.

[0037] Embodiment 2

[0038] See also Figure 2 , Figures 5 and 6 On the basis of the first embodiment, the bottom end of the U-shaped frame 1 is located below the cable 6 and is provided with evenly distributed ventilation holes 2. In the space separated by different partition boards, a temperature difference will be formed due to the different temperatures generated by different cables 6, thereby forming an air pressure difference, so that the external air flow can enter the space separated by the partition board through the ventilation holes 2, and the air flow flows under the air pressure difference, so that the cable 6 can obtain a stronger heat dissipation effect.

[0039] Embodiment 3

[0040] See also Figure 2 , Figures 5 to 7On the basis of the second embodiment, the bottom end of the U-shaped frame 1 is provided with uniformly distributed sliding grooves 3, and a sealing plate 4 is movably sleeved in the sliding groove 3. The sealing plate 4 is provided with uniformly distributed connecting holes 41, and the connecting holes 41 are connected to the ventilation holes 2. Under normal conditions, the connecting holes 41 are connected to the ventilation holes 2, so that the outside air can enter the U-shaped frame 1 through the ventilation holes 2 for heat dissipation. One end of the sealing plate 4 is inserted into the falling hole 5, and the top of this end of the sealing plate 4 is provided with an inclined surface 42, and the end of the sealing plate 4 away from the falling hole 5 and the end of the sliding groove 3 away from the falling hole 5 are spaced apart. There is a gap. When the gravity rod 11 falls downward, it will hit the inclined surface 42 of the sealing plate 4, causing the sealing plate 4 to move away from the gravity rod 11, so that the connecting hole 41 on the sealing plate 4 is staggered with the ventilation hole 2, and the gravity rod 11 fits the sealing plate, and the flame-retardant cloth II near the gravity rod 11 closes the space between the falling hole 5 and the cable 6, so that the hole for supplying air to the cable 6 is closed, and the flame-retardant cloth II 10 wraps the cable 6 for physical sealing, which further hinders the burning speed of the flame and even performs fire extinguishing.

[0041] Embodiment 4

[0042] See also Figures 5 and 6 On the basis of the third embodiment, the flame retardant cloth II 10 is in a relaxed state. After the wax layer 12 melts into liquid, it will converge to the bottom of the partition board. At this time, the end of the flame retardant cloth II 10 connected to the gravity rod 11 is at the bottom, and the side of the flame retardant cloth II 10 connected to the metal positioning plate 8 is also at the bottom, so the liquid wax will converge at these two places, so that the liquid wax expands the flame retardant cloth II 10 and completely wraps the cable 6 for physical sealing, further hindering the burning speed of the flame, and even performing fire extinguishing treatment.

[0043] The working principle of the present invention is as follows:

[0044] First, install multiple U-shaped frames 1 together front and back according to the wiring direction. Then, place different types of cables 6 separately in the U-shaped frame 1, and fix them in the U-shaped frame 1 through the metal positioning plate 8 on the partition plate with bolts. At this time, the partition plate is wrapped in a hook shape above the single cable 6, and the single cable 6 is in the space separated by adjacent partition plates. In the straight direction of the U-shaped frame 1, the opposite ends of the partition plates on the same straight line in adjacent U-shaped frames 1 are fitted together. Then, manually adjust the sealing plate 4 to a state where the connecting hole 41 and the ventilation hole 2 are connected. After the installation is completed, cover the top opening of the U-shaped frame 1 with the cover plate 7.

[0045] Next, the outside air will enter the U-shaped frame 1 separated by the partition board through the ventilation holes 2, the connecting holes 41 and the falling holes 5, and be released from the cables 6 to dissipate heat. Then, the flowing air will continue to flow upward and be discharged from the gaps between adjacent partition boards. It is worth noting that due to the different materials, heat and heat dissipation conditions of different types of cables 6, there is a temperature difference in the small space where different cables 6 in the same U-shaped frame 1 are located, thereby forming an air pressure difference at different temperatures. At this time, the air flow direction will be affected by the air pressure difference in different spaces.

[0046] Then, when one of the cables 6 in the U-shaped frame 1 catches fire, the fire point of the cable 6 will radiate heat to the surroundings and burn on the partition board, so that the heat is transferred to the solid wax layer 12 after being digested by the flame retardant cloth II 10. The high temperature will soften the solid wax layer 12 and gradually melt it into a liquid state. At this time, the softened or even melted wax layer 12 will not be able to provide sufficient support force to the gravity rod 11, causing the gravity rod 11 to sag downward. As the wax layer 12 continues to melt, the gravity rod 11 The faster the falling speed of 11, the shape of the metal positioning plate 8 of the partition board does not change, but the flame retardant cloth I9 and flame retardant cloth II10 will move downward with the gravity rod 11 and cover the burning cable 6. At this time, the gravity rod 11 will fall into the falling hole 5 below, so that the end of the flame retardant cloth II10 connected to the gravity rod 11 is at the bottom, and the side of the flame retardant cloth II10 connected to the metal positioning plate 8 is also at the bottom, so the liquid wax will gather at these two places, so that the liquid wax expansion resistance The flame retardant cloth II 10 is completely wrapped around the cable 6 for physical sealing, and the gravity rod 11 will contact the cable 6 when it is drooping, and the pulled flame retardant cloth II 10 will also push the cable 6, so that the cable 6 moves toward the metal positioning plate 8, so that the cable 6 squeezes the flame retardant cloth II 10 expanded by the liquid wax, and improves the degree of fit between the cable 6 and the flame retardant cloth II 10. Then, when the gravity rod 11 hangs down, it will hit the inclined surface 42 of the sealing plate 4, so that the sealing plate 4 moves away from the gravity rod 11, so that the connecting hole 41 on the sealing plate 4 is staggered from the ventilation hole 2, and the gravity rod 11 fits the sealing plate, and the flame retardant cloth II near the gravity rod 11 will close the space between the falling hole 5 and the cable 6, so that the hole for supplying air to the cable 6 is closed, and the flame retardant cloth II 10 wraps the cable 6 for physical sealing. At this time, the ignition point of the cable 6 is wrapped, and the lack of air will hinder the spread of the flame, and even complete automatic fire extinguishing.

[0047] Finally, black smoke generated by the burning and lack of air in the wrapping area will emerge from the U-shaped frame 1, allowing the staff to carry out timely fire extinguishing. After the fire is extinguished, the cover plate 7 is opened, the partition board with the melted wax layer 12 wrapping the cable 6 is removed, the burning cable 6 is cleaned and replaced, and a new partition board is installed.

[0048] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. An aluminum alloy bridge capable of classifying and inserting cables, characterized in that: include: A U-shaped frame (1), wherein the bottom end of the inner cavity of the U-shaped frame (1) is provided with evenly distributed partition boards, and cables (6) are placed between adjacent partition boards for separating cables (6) of different types; The partition board comprises a metal positioning plate (8) fixed to the bottom end of the inner cavity of the U-shaped frame (1), a flame retardant cloth I (9) and a flame retardant cloth II (10) arranged on the metal positioning plate (8), a gravity rod (11) arranged at one end of the flame retardant cloth I (9) and the flame retardant cloth II (10) away from the metal positioning plate (8), and a wax layer (12) filled between the flame retardant cloth I (9) and the flame retardant cloth II (10), so as to maintain the initial shape of the partition board; The partition board has a hook-shaped cross section and covers the top of the cable (6) to guide the flow direction of the airflow. The gravity rod (11) is located at the downwardly bent position of the top of the partition board hook to guide the direction of deformation of the partition board after the wax layer (12) melts.

2. The aluminum alloy bridge capable of classifying and inserting cables according to claim 1 is characterized in that: A cover plate (7) is placed at the top opening of the U-shaped frame (1) to close the top opening of the U-shaped frame (1) and protect the cables (6).

3. The aluminum alloy bridge capable of classifying and inserting cables according to claim 1 is characterized in that: The bottom end of the U-shaped frame (1) is provided with evenly distributed falling holes (5), the width of which is greater than the diameter of the gravity rod (11), and is used to provide space for the gravity rod (11) to fall, and to provide holes for air flow.

4. The aluminum alloy bridge capable of classifying and inserting cables according to claim 3 is characterized in that: The bottom end of the U-shaped frame (1) is located below the cable (6) and is provided with evenly distributed ventilation holes (2) for guiding outside air into the U-shaped frame (1) to dissipate heat for the cable (6).

5. The aluminum alloy bridge capable of classifying and inserting cables according to claim 4 is characterized in that: The bottom end of the U-shaped frame (1) is provided with evenly distributed sliding grooves (3), a sealing plate (4) is sleeved in the sliding groove (3), and the sealing plate (4) is provided with evenly distributed connecting holes (41), the connecting holes (41) are connected to the ventilation holes (2) and are used to guide air into the U-shaped frame (1), or to close the ventilation holes (2) to prevent air from entering the U-shaped frame (1).

6. The aluminum alloy bridge capable of classifying and inserting cables according to claim 5, characterized in that: One end of the sealing plate (4) is inserted into the falling hole (5), and an inclined surface (42) is provided on the top of the sealing plate (4) for contacting the falling gravity rod (11).

7. The aluminum alloy bridge capable of classifying and inserting cables according to claim 6, characterized in that: There is a gap between one end of the sealing plate (4) away from the falling hole (5) and one end of the sliding groove (3) away from the falling hole (5), which is used to provide space for the sealing plate (4) to move when it is pushed by the gravity rod (11).

8. The aluminum alloy bridge capable of classifying and inserting cables according to claim 1 is characterized in that: The flame retardant cloth II (10) is in a relaxed state, and is used for the melted liquid wax to expand the flame retardant cloth II (10) to fit the cable (6).

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