Bus duct with flame-retardant function

Abstract

The utility model discloses a bus duct with a flame-retardant function, which relates to the technical field of bus ducts and comprises a shell and a top cover, two lower fixing blocks are fixedly connected to the bottom end of the inner side of the shell close to a wire inlet and a wire outlet of the bus duct, a plurality of semicircular arc-shaped lower fixing grooves which are uniformly distributed are formed in the upper ends of the lower fixing blocks, and the lower fixing blocks are fixedly connected with the top cover. Two threaded rods are fixedly connected to the edge of the upper end of the lower fixing block, an upper fixing block used for clamping a cable is slidably connected to the outer surface of each threaded rod, an upper fixing groove is formed in the position, corresponding to the lower fixing groove, of the lower end of the upper fixing block, and rubber pads are fixedly connected to the inner side of the upper fixing groove and the inner side of the lower fixing groove correspondingly; the outer surface of the threaded rod is in threaded connection with a threaded sleeve, the outer surface of the threaded rod is sleeved with a spring used for resetting the upper fixing block upwards, the cables can be clamped and carded through the upper fixing groove and the lower fixing groove, the cables are prevented from being interwoven together, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bus ducts, in particular to a bus duct with a flame retardant function. Background Art

[0002] Bus duct is a closed metal device composed of copper and aluminum busbars, which is used to distribute high power to various components of the distributed system. It has increasingly replaced wires and cables in indoor low-voltage power transmission trunk line projects.

[0003] The busbar generates a lot of heat when working. The existing busbar duct dissipates heat by opening heat dissipation ports, and the overall heat dissipation effect is poor. When there are too many cables, the cables will be intertwined, which may easily cause safety hazards. At the same time, the fire retardant ability is poor. In the event of a fire, it is easy to cause serious fire spread and losses. Utility Model Content

[0004] In order to solve the above technical problems, a bus duct with flame retardant function is provided. The technical solution solves the problem that the busbar mentioned in the above background technology will generate a large amount of heat when working. The existing bus duct dissipates heat by opening heat dissipation ports, and the overall heat dissipation effect is poor. When too many cables are arranged, the cables will be intertwined, which may easily cause safety hazards. At the same time, the fire retardant ability is not good. In the event of a fire, it may easily lead to serious fire spread and loss.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A bus duct with flame retardant function comprises a shell and a top cover, wherein two lower fixing blocks are fixedly connected to the inner bottom end of the shell near the inlet and outlet of the bus duct, a plurality of evenly distributed semicircular arc-shaped lower fixing grooves are opened at the upper end of the lower fixing block, two threaded rods are fixedly connected to the upper edge of the lower fixing block, an upper fixing block for clamping a cable is slidably connected to the outer surface of the threaded rod, an upper fixing groove is opened at the corresponding position of the lower end of the upper fixing block and the lower fixing groove, rubber pads are fixedly connected to the inner sides of the upper fixing groove and the lower fixing groove, a threaded sleeve is threadedly connected to the outer surface of the threaded rod, a spring for resetting the upper fixing block upward is sleeved on the outer surface of the threaded rod, and the spring is arranged between the upper fixing block and the lower fixing block.

[0007] Preferably, ventilation slots are provided through both the front and rear ends of the shell, and fixed frames are fixedly connected to the front and rear ends of the shell at positions corresponding to the ventilation slots, and a cooling fan blowing air outwards is fixedly installed inside the fixed frame.

[0008] Preferably, a dust cover is welded to the outer side of the fixing frame.

[0009] Preferably, the inner cavities of the shell and the top cover are both fixedly connected with a heat insulation layer, and the outer side of the heat insulation layer is provided with a flame retardant plate that fits tightly with the inner cavities of the shell and the top cover.

[0010] Preferably, a sliding groove is formed through the right side of the top cover, and the top cover is slidably connected to the upper end of the shell through the sliding groove.

[0011] Preferably, docking holes are formed through the four corners of the upper end of the shell, and connecting holes are formed through the upper end of the top cover at positions corresponding to the docking holes, and fixing pins are connected to the internal threads of the connecting holes and the docking holes.

[0012] Preferably, copper bars for connecting devices are provided at the left and right ends of the shell.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] This scheme proposes a bus duct with flame retardant function. Rotating the threaded sleeve can push the upper fixed block downward and compress the spring, so that the upper fixed groove and the lower fixed groove can clamp the cable, fix and comb the cable, avoid the cables from being intertwined, and reduce potential safety hazards.

[0015] In this solution, ventilation slots and cooling fans are provided. The cooling fans blow air outward to accelerate the discharge of hot air in the bus duct, thereby improving the heat dissipation effect of the bus duct and extending the life of the cables in the bus duct.

[0016] In this solution, a heat insulation layer and a flame retardant board are provided. The heat insulation layer can reduce the impact of the heat transmitted by the bus duct on the surrounding environment, reduce the risk of fire, and improve the safety of the electrical system. The flame retardant board is filled with flame retardants, which can effectively suppress the spread of flames in the event of a fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection of the top cover in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the lower fixing block in the utility model.

[0020] The numbers in the figure are:

[0021] 1. Shell; 2. Lower fixing block; 3. Threaded rod; 4. Upper fixing block; 5. Upper fixing groove; 6. Lower fixing groove; 7. Rubber pad; 8. Top cover; 9. Spring; 10. Threaded sleeve; 11. Ventilation groove; 12. Fixing frame; 13. Cooling fan; 14. Dust cover; 15. Insulation layer; 16. Flame retardant board; 17. Docking hole; 18. Connection hole; 19. Copper busbar; 20. Fixing pin. DETAILED DESCRIPTION

[0022] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0023] Reference Figure 1 , Figure 2 and Figure 3 As shown, a bus duct with flame retardant function includes a shell 1 and a top cover 8, two lower fixing blocks 2 are fixedly connected to the inner bottom end of the shell 1 near the inlet and outlet of the bus duct, a plurality of evenly distributed semicircular arc-shaped lower fixing grooves 6 are opened on the upper end of the lower fixing block 2, two threaded rods 3 are fixedly connected to the upper edge of the lower fixing block 2, an upper fixing block 4 for clamping the cable is slidably connected to the outer surface of the threaded rod 3, an upper fixing groove 5 is opened at the corresponding position of the lower end of the upper fixing block 4 and the lower fixing groove 6, and the inner sides of the upper fixing groove 5 and the lower fixing groove 6 are fixedly connected with rubber Pad 7, the outer surface of the threaded rod 3 is threadedly connected with a threaded sleeve 10, the outer surface of the threaded rod 3 is sleeved with a spring 9 for resetting the upper fixing block 4 upward, the spring 9 is arranged between the upper fixing block 4 and the lower fixing block 2, by rotating the threaded sleeve 10, the upper fixing block 4 can be pushed downward and the spring 9 can be compressed, so that the upper fixing groove 5 and the lower fixing groove 6 clamp the cable, the setting of the rubber pad 7 can increase the friction between the cable and avoid the cable from being squeezed and damaged, and the threaded sleeve 10 is rotated in the opposite direction, and the threaded sleeve 10 will move upward along the threaded rod 3, and at this time the spring 9 will drive the upper fixing block 4 to reset.

[0024] Ventilation slots 11 are provided through both the front and rear ends of the shell 1. Fixed frames 12 are fixedly connected to the front and rear ends of the shell 1 at corresponding positions of the ventilation slots 11. A cooling fan 13 for blowing air outward is fixedly installed inside the fixed frame 12. Blowing air outward by the cooling fan 13 can speed up the discharge of hot air in the bus duct, improve the heat dissipation effect of the bus duct, and extend the service life of the cables in the bus duct. A dust cover 14 is welded to the outside of the fixed frame 12. The dust cover 14 can reduce the entry of dust into the bus duct and extend the service life of electrical components.

[0025] The inner cavities of the shell 1 and the top cover 8 are fixedly connected with a heat insulation layer 15, and the outer side of the heat insulation layer 15 is provided with a flame retardant plate 16 that fits tightly with the inner cavities of the shell 1 and the top cover 8. The heat insulation layer 15 can reduce the impact of the heat transmitted by the bus duct on the surrounding environment, reduce the risk of fire, and improve the safety of the electrical system. The flame retardant plate 16 is filled with flame retardants, which can effectively suppress the spread of flames in the event of a fire.

[0026] A sliding groove is provided on the right side of the top cover 8, and the top cover 8 is slidably connected to the upper end of the shell 1 through the sliding groove. Docking holes 17 are provided at the four corners of the upper end of the shell 1, and connecting holes 18 are provided at the corresponding positions of the upper end of the top cover 8 and the docking holes 17. The connecting holes 18 and the docking holes 17 are internally threadedly connected with fixing pins 20.

[0027] Copper busbars 19 for connecting devices are provided at the left and right ends of the housing 1 .

[0028] Working principle: When in use, place the cable in the lower fixed groove 6, rotate the threaded sleeve 10 to push the upper fixed block 4 downward and compress the spring 9, so that the upper fixed groove 5 is close to the lower fixed groove 6 to clamp and fix the cable, and at the same time connect the cable to the copper bus 19, and then use the sliding groove of the top cover 8 to install it on the upper end of the shell 1. After the top cover 8 is installed, the fixing pin 20 is rotated and installed in the docking hole 17 and the connecting hole 18 to fix the top cover 8 to prevent the top cover 8 from slipping during use. During the use of the bus duct, the ventilation grooves 11 and the cooling fan 13 on the front and rear sides of the shell 1 can accelerate the discharge of hot air in the bus duct, thereby improving the heat dissipation effect of the bus duct. The flame retardant plate 16 is filled with flame retardant, which can effectively suppress the spread of flames in the event of a fire.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A bus duct with flame retardant function, characterized in that: The utility model comprises a shell (1) and a top cover (8), wherein two lower fixing blocks (2) are fixedly connected to the inner bottom end of the shell (1) near the inlet and outlet of the bus duct, the upper end of the lower fixing block (2) is provided with a plurality of evenly distributed semicircular lower fixing grooves (6), two threaded rods (3) are fixedly connected to the upper edge of the lower fixing block (2), the outer surface of the threaded rod (3) is slidably connected to an upper fixing block (4) for clamping the cable, an upper fixing groove (5) is provided at the corresponding position of the lower end of the upper fixing block (4) and the lower fixing groove (6), the inner sides of the upper fixing groove (5) and the lower fixing groove (6) are fixedly connected to a rubber pad (7), the outer surface of the threaded rod (3) is threadedly connected to a threaded sleeve (10), the outer surface of the threaded rod (3) is sleeved with a spring (9) for resetting the upper fixing block (4) upward, and the spring (9) is arranged between the upper fixing block (4) and the lower fixing block (2).

2. The bus duct with flame retardant function according to claim 1, characterized in that: The front and rear ends of the shell (1) are both penetrated by ventilation slots (11), and fixed frames (12) are fixedly connected at positions corresponding to the front and rear ends of the shell (1) and the ventilation slots (11), and a heat dissipation fan (13) for blowing air outwards is fixedly installed inside the fixed frame (12).

3. The bus duct with flame retardant function according to claim 2, characterized in that: A dust cover (14) is welded to the outer side of the fixing frame (12).

4. The bus duct with flame retardant function according to claim 1, characterized in that: The inner cavities of the shell (1) and the top cover (8) are both fixedly connected with a heat insulation layer (15), and the outer side of the heat insulation layer (15) is provided with a flame retardant plate (16) that is tightly fitted with the inner cavities of the shell (1) and the top cover (8).

5. The bus duct with flame retardant function according to claim 1, characterized in that: A sliding groove is provided through the right side of the top cover (8), and the top cover (8) is slidably connected to the upper end of the housing (1) via the sliding groove.

6. The bus duct with flame retardant function according to claim 1, characterized in that: The shell (1) has docking holes (17) formed at four corners of the upper end thereof, and a connecting hole (18) is formed at the upper end of the top cover (8) at positions corresponding to the docking holes (17). The connecting holes (18) and the docking holes (17) are internally threadedly connected with fixing pins (20).

7. The bus duct with flame retardant function according to claim 1, characterized in that: Copper bars (19) for connecting equipment are provided at the left and right ends of the housing (1).

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