Fireproof bus duct with stepped heat dissipation channel and process thereof

Abstract

The invention relates to the technical field of fireproof bus ducts, discloses a fireproof bus duct with stepped heat dissipation channels and a process thereof, and solves the problem that the fireproof bus duct cannot achieve an automatic heat dissipation effect in the use process. The fireproof bus duct comprises a bus duct body, and three first circular grooves are uniformly formed in the bottom of the bus duct body; first circular grooves are formed in the bus duct body, first heat dissipation holes are uniformly formed in the first circular grooves, three second circular grooves are formed in each of the front side and the rear side of the bus duct body, second heat dissipation holes are uniformly formed in the second circular grooves in a penetrating mode, and four heat dissipation fin sets are uniformly and fixedly installed on the front side and the rear side of the bus duct body; the top of the bus duct body is uniformly and fixedly provided with temperature sensors, and the bottom of the bus duct body is provided with an adjusting heat dissipation assembly. According to the fireproof bus duct, the fireproof bus duct can achieve an automatic heat dissipation effect in the use process, and the working safety of the fireproof bus duct is improved, so that the normal working of a power trunk line is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of fireproof bus ducts, and in particular relates to a fireproof bus duct with a stepped heat dissipation channel and a process thereof. Background Art

[0002] Bus duct is a closed metal device composed of copper and aluminum busbar columns, which is used to distribute large power to various components of the distributed system. It has increasingly replaced wires and cables in indoor low-voltage power transmission trunk projects. There are many types of bus ducts, and fire-proof bus duct is one of them. Fire-proof bus duct is an important equipment for power transmission and is widely used in various buildings and industrial facilities. It not only has excellent electrical conductivity, but also performs well in fire safety, and can effectively reduce fire hazards. However, during the use of fire-proof bus duct, it cannot achieve the effect of automatic heat dissipation, which reduces the safety of the fire-proof bus duct and thus affects the normal operation of the power trunk line. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a fire-proof bus duct with a stepped heat dissipation channel and a process thereof, which effectively solves the problem that the fire-proof bus duct cannot achieve the effect of automatic heat dissipation during use, reduces the safety of the fire-proof bus duct, and thus affects the normal operation of the power trunk line.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fireproof bus duct with a stepped heat dissipation channel, comprising a bus duct body, three first circular grooves are evenly opened on the bottom of the bus duct body, first heat dissipation holes are evenly opened inside the first circular grooves, and the tops of the first heat dissipation holes extend to the interior of the bus duct body, three second circular grooves are opened on the front and back sides of the bus duct body, second heat dissipation holes are evenly opened inside the second circular grooves, one end of the second heat dissipation hole extends to the interior of the bus duct body, and an annular groove is opened on the other end of the second heat dissipation hole, and a fireproof sealing ring is fixedly installed inside the annular groove, and the fireproof sealing ring is fixedly installed inside the annular groove. The ring is made of a ceramic silicone rubber sealing ring, a circular metal dustproof screen is fixedly installed on the side of the second circular groove away from the bus duct body, and an inclined baffle is fixedly installed on the inner wall of the bus duct body at a position aligned with the second circular groove. Four heat dissipation fin groups are evenly fixed on the front and back sides of the bus duct body, and the circular metal dustproof screen is located between the heat dissipation fin groups. Mounting frames are fixedly installed at both ends of the top of the bus duct body, and mounting holes are opened at both ends of the mounting frames. Temperature sensors are evenly fixed on the top of the bus duct body, and multiple temperature sensors are located between the two mounting frames. An adjustable heat dissipation component is installed at the bottom of the bus duct body.

[0005] Preferably, the heat dissipation regulating assembly includes a strip-shaped shell, and the top of the strip-shaped shell is an open structure, the cross-section of the strip-shaped shell is an inverted convex structure, a control module is fixedly installed on the middle part of the outer side of the strip-shaped shell, and the control module is electrically connected to the temperature sensor, and strip ventilation mesh plates are evenly fixed and installed on the bottom of both ends of the strip-shaped shell, a positioning strip is fixedly installed on the middle part of the interior of the strip-shaped shell, and four strip openings are evenly opened inside the positioning strip, three cylinders are evenly fixed on the top of the positioning strip, and the three cylinders are respectively located directly below the three first circular grooves, and the tops of the three cylinders are in contact with the bottom of the bus duct body, and the inside of the three cylinders are all provided with heat dissipation fan blades, and a rotating shaft is fixedly installed on the bottom of the heat dissipation fan blades, and the bottom end of the rotating shaft is rotatably installed inside the positioning strip, and the bottom of the rotating shaft extends to the bottom of the positioning strip.

[0006] Preferably, a positioning frame is fixedly installed inside the cylinder, and the positioning frame is a cross-shaped structure, and the rotating shaft is rotatably installed inside the positioning frame.

[0007] Preferably, connecting seats are fixedly installed on the top of both sides of the strip shell, and connecting bolts are symmetrically installed inside the two connecting seats. Connecting screw sleeves are symmetrically fixedly installed on both ends of the bottom of the bus duct body, and the top threads of the connecting bolts are installed on the bottom of the connecting screw sleeves.

[0008] Preferably, a speed-increasing bevel gear is fixedly installed on the bottom of the rotating shaft, and the outer side of the speed-increasing bevel gear is meshed with a driven bevel gear, and a transmission shaft is fixedly installed inside the driven bevel gear, and both ends of the transmission shaft are rotatably connected to the inner wall of the bar shell. A transmission gear ring is fixedly installed on the outside of one end of the transmission shaft, and the bottom of the transmission gear ring is meshed with a transmission rack, and a movable frame is fixedly installed on the bottom of the transmission rack, and the cross-section of the movable frame is an L-shaped structure, and a movable screw sleeve is fixedly installed in the middle of the inner part of the movable frame, and a reciprocating screw rod is installed on the internal thread of the movable screw sleeve, and both ends of the reciprocating screw rod are rotatably connected to the inner wall of the strip shell, and a driving motor is fixedly installed on one side of the strip shell, and the driving motor is electrically connected to the control module, and the output shaft of the driving motor movably passes through one side of the strip shell and is fixedly connected to one end of the reciprocating screw rod.

[0009] Preferably, a first positioning sleeve is fixedly installed on the side of the movable screw sleeve away from the movable frame, a first positioning slide rod is installed slidingly through the interior of the first positioning sleeve, and both ends of the first positioning slide rod are fixedly connected to the inner wall of the strip shell.

[0010] Preferably, a second positioning sleeve is fixedly installed on the side of the movable frame away from the movable screw sleeve, a second positioning slide rod is installed inside the second positioning sleeve for sliding through, and both ends of the second positioning slide rod are fixedly connected to the inner wall of the strip shell.

[0011] Preferably, four sliding bars are symmetrically fixedly mounted on the inner wall of the second positioning slide sleeve, four sliding grooves are symmetrically opened on the outer side of the second positioning slide rod, and the four sliding bars are slidably mounted inside the four sliding grooves respectively.

[0012] In addition, the present invention also provides a manufacturing process for a fireproof bus duct with a stepped heat dissipation channel, comprising the following steps:

[0013] Step 1: Cut the steel plates required for manufacturing the fireproof bus duct according to a certain size, and then bend the cut plates into the shape of the shell of the fireproof bus duct;

[0014] Step 2: After bending and forming, evenly fix and weld the heat dissipation fin group on the front and back sides of the shell, and fix and weld two symmetrical connecting screw sleeves at the corresponding positions at both ends of the bottom of the shell;

[0015] Step 3: evenly open a first circular groove on the bottom of the bent shell, and evenly open a first heat dissipation hole inside the first circular groove, then evenly open a second circular groove on the front and back sides of the shell, and evenly open a second heat dissipation hole inside the second circular groove, then open an annular groove with a diameter larger than the diameter of the second heat dissipation hole at one end of the second circular groove close to the outside of the shell, then install a fireproof sealing ring inside the annular groove with a special adhesive, then fix and weld a circular metal dustproof screen plate on the side of the second circular groove away from the shell, and then fix and weld an inclined baffle on the position corresponding to the second circular groove on the inner wall of the shell;

[0016] Step 4: Install the internal electrical components of the bus duct inside the housing, fill it with silicone wool, and install the heat pipe. Then, fix the top cover plate with the mounting bracket and temperature sensor to the top of the housing to complete the assembly of the bus duct body with stepped heat dissipation channels.

[0017] Step 5: Place the adjustable heat dissipation assembly at the bottom of the bus duct body, align the connecting bolts vertically with the connecting nut, and then rotate the connecting bolts to fix the strip shell to the bottom of the bus duct body. After the fixation is completed, the top of the strip shell contacts the bottom of the bus duct body, and the tops of the three cylinders inside the strip shell contact the bottoms of the three first circular grooves respectively, completing the overall manufacturing and assembly operation of the overall bus duct.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) During operation, the bus duct body, the first circular groove, the first heat dissipation hole, the second circular groove, the second heat dissipation hole, the heat dissipation fin group, the mounting frame, the temperature sensor and the heat dissipation adjustment component interact with each other, so that the fire-proof bus duct can achieve the effect of automatic heat dissipation during use, thereby improving the safety of the fire-proof bus duct and ensuring the normal operation of the power trunk line;

[0020] 2) During operation, the positioning frame is provided to enable the rotating shaft to rotate stably inside the cylinder, thereby ensuring that the heat dissipation fan blades can work stably;

[0021] 3) During operation, the interaction of the second positioning sleeve, the second positioning slide rod, the sliding groove and the sliding bar enables the movable frame to achieve better stability when moving, thereby ensuring that the heat dissipation adjustment component can work stably;

[0022] 4) During operation, through the interaction of the provided connecting seat, connecting bolts and connecting screw sleeves, it is possible to better install the adjustable heat dissipation assembly at the bottom of the bus duct body during use, thereby ensuring that the staff can better operate it. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] In the attached figure:

[0025] Figure 1 This is a structural schematic diagram of a fireproof bus duct with a stepped heat dissipation channel according to the present invention;

[0026] Figure 2 This is a schematic diagram of the bus duct body structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the partially disassembled structure of the second circular groove of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the heat dissipation regulating assembly of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal structure of the strip-shaped housing of the present invention;

[0030] Figure 6 This is an enlarged structural diagram of the transmission rack portion of the present invention;

[0031] Figure 7 It is a schematic diagram of the disassembled structure of the second positioning sliding sleeve and the second positioning sliding rod of the present invention.

[0032] Figure: 1, bus duct body; 2, first circular groove; 3, first heat dissipation hole; 4, second circular groove; 5, second heat dissipation hole; 6, annular groove; 7, fireproof sealing ring; 8, circular metal dust screen; 9, inclined baffle; 10, cooling fin group; 11, mounting frame; 12, mounting hole; 13, temperature sensor; 14, heat dissipation adjustment component; 15, strip housing; 16, control module; 17, strip ventilation screen; 18, positioning strip; 19, strip opening; 20, cylinder; 21, heat dissipation Fan blades; 22. Rotating shaft; 23. Positioning frame; 24. Connecting seat; 25. Connecting bolt; 26. Connecting screw sleeve; 27. Speed ​​increasing bevel gear; 28. Driven bevel gear; 29. ​​Transmission shaft; 30. Transmission gear ring; 31. Transmission rack; 32. Movable frame; 33. Movable screw sleeve; 34. Reciprocating screw rod; 35. Driving motor; 36. First positioning sleeve; 37. First positioning slide; 38. Second positioning sleeve; 39. Second positioning slide; 40. Sliding bar; 41. Sliding groove. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Embodiment 1, by Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7The present invention includes a bus duct body 1, three first circular grooves 2 are evenly opened at the bottom of the bus duct body 1, first heat dissipation holes 3 are evenly opened inside the first circular grooves 2, and the tops of the first heat dissipation holes 3 extend to the inside of the bus duct body 1, three second circular grooves 4 are opened on the front and back sides of the bus duct body 1, and second heat dissipation holes 5 are evenly opened inside the second circular grooves 4. One end of the second heat dissipation hole 5 extends to the inside of the bus duct body 1, and an annular groove 6 is opened at the other end of the second heat dissipation hole 5, and a fireproof sealing ring 7 is fixedly installed inside the annular groove 6, and the fireproof sealing ring 7 is made of a ceramic silicone rubber sealing ring. The second circular groove 4 is away from A circular metal dustproof screen 8 is fixedly installed on one side of the bus duct body 1, and an inclined baffle 9 is fixedly installed on the inner wall of the bus duct body 1 at a position aligned with the second circular groove 4. Four heat dissipation fin groups 10 are evenly fixed on the front and back sides of the bus duct body 1, and the circular metal dustproof screen 8 is located between the heat dissipation fin groups 10. Mounting brackets 11 are fixedly installed on both ends of the top of the bus duct body 1, and mounting holes 12 are opened at both ends of the mounting bracket 11. Temperature sensors 13 are evenly fixed on the top of the bus duct body 1, and multiple temperature sensors 13 are located between the two mounting brackets 11. An adjustable heat dissipation component 14 is installed at the bottom of the bus duct body 1;

[0035] During use, the bus duct body 1, the first circular groove 2, the first heat dissipation hole 3, the second circular groove 4, the second heat dissipation hole 5, the heat dissipation fin group 10, the mounting frame 11, the temperature sensor 13 and the heat dissipation adjustment component 14 interact with each other, so that the fire-proof bus duct can achieve the effect of automatic heat dissipation during use, thereby improving the safety of the fire-proof bus duct and ensuring the normal operation of the power trunk line.

[0036] Embodiment 2, on the basis of embodiment 1, the heat dissipation adjustment component 14 includes a strip shell 15, and the top of the strip shell 15 is an open structure, the cross-section of the strip shell 15 is an inverted convex structure, the top of both sides of the strip shell 15 are fixedly installed with a connecting seat 24, the interior of the two connecting seats 24 are symmetrically rotatably installed with connecting bolts 25, the bottom two ends of the bus duct body 1 are symmetrically fixed with connecting screw sleeves 26, and the top of the connecting bolt 25 is threadedly installed on the bottom of the connecting screw sleeve 26, which can facilitate the better installation of the heat dissipation adjustment component 14 on the bottom of the bus duct body 1 during use, thereby ensuring that the staff can better operate, a control module 16 is fixedly installed on the middle part of the outer side of the strip shell 15, and the control module 16 is electrically connected to the temperature sensor 13, and the bottom of both ends of the strip shell 15 are evenly fixed with strip ventilation mesh panels 17, the strip shell A positioning strip 18 is fixedly installed on the middle part of the interior of 15, and four strip-shaped openings 19 are evenly opened inside the positioning strip 18. Three cylinders 20 are evenly fixedly installed on the top of the positioning strip 18, and the three cylinders 20 are respectively located directly below the three first circular grooves 2. The tops of the three cylinders 20 are in contact with the bottom of the bus duct body 1. Heat dissipation fan blades 21 are provided inside the three cylinders 20. A rotating shaft 22 is fixedly installed on the bottom of the heat dissipation fan blades 21, and the bottom end of the rotating shaft 22 is rotatably installed in the interior of the positioning strip 18. The bottom of the rotating shaft 22 extends to the bottom of the positioning strip 18. A positioning frame 23 is fixedly installed inside the cylinder 20, and the positioning frame 23 is a cross-shaped structure. The rotating shaft 22 is rotatably installed in the interior of the positioning frame 23, so that the rotating shaft 22 can rotate stably inside the cylinder 20, thereby ensuring that the heat dissipation fan blades 21 can work stably.

[0037] The bottom of the rotating shaft 22 is fixedly installed with a speed increasing bevel gear 27, and the outer side of the speed increasing bevel gear 27 is meshed with a driven bevel gear 28. A transmission shaft 29 is fixedly installed inside the driven bevel gear 28, and both ends of the transmission shaft 29 are rotatably connected to the inner wall of the strip-shaped shell 15. A transmission gear ring 30 is fixedly installed on the outer side of one end of the transmission shaft 29, and a transmission rack 31 is meshed with the bottom of the transmission gear ring 30. A movable frame 32 is fixedly installed at the bottom of the transmission rack 31, and the cross-section of the movable frame 32 is an L-shaped structure. A movable screw sleeve 33 is fixedly installed in the middle of the inner part of the movable frame 32, and the movable screw sleeve 33 is away from A first positioning sleeve 36 is fixedly installed on one side of the movable frame 32, and a first positioning slide rod 37 is installed inside the first positioning sleeve 36 for sliding and passing through, and both ends of the first positioning slide rod 37 are fixedly connected to the inner wall of the strip housing 15, and a reciprocating screw rod 34 is installed on the internal thread of the movable screw sleeve 33, and both ends of the reciprocating screw rod 34 are rotatably connected to the inner wall of the strip housing 15, and a drive motor 35 is fixedly installed on one side of the strip housing 15, and the drive motor 35 is electrically connected to the control module 16, and the output shaft of the drive motor 35 movably passes through one side of the strip housing 15 and is fixedly connected to one end of the reciprocating screw rod 34;

[0038] A second positioning sleeve 38 is fixedly installed on the side of the movable frame 32 away from the movable screw sleeve 33, and a second positioning slide rod 39 is installed inside the second positioning sleeve 38 for sliding through, and both ends of the second positioning slide rod 39 are fixedly connected to the inner wall of the strip shell 15, and four sliding bars 40 are symmetrically fixed on the inner wall of the second positioning sleeve 38, and four sliding grooves 41 are symmetrically opened on the outer side of the second positioning slide rod 39, and the four sliding bars 40 are respectively slidably installed inside the four sliding grooves 41, which can make the movable frame 32 easier to achieve better stability when moving, thereby ensuring that the adjustment of the heat dissipation component 14 can work stably.

[0039] Working principle: When working, first use the mounting bolts that are compatible with the diameter of the mounting hole 12 to fix the mounting frame 11 to complete the installation of the entire bus duct, and then monitor the working temperature inside the bus duct body 1 through the temperature sensor 13 during use. When the temperature exceeds the predetermined value, the temperature sensor 13 sends a signal, and the control module 16 receives the signal to control the drive motor 35 to work. The drive motor 35 drives the reciprocating screw rod 34 to rotate, and the reciprocating screw rod 34 drives the movable screw sleeve 33 to move to the right. The movable screw sleeve 33 drives the first positioning sleeve 36 to slide on the outside of the first positioning slide rod 37, which can ensure that the movable screw sleeve 33 achieves better stability when moving. At the same time, the movable screw sleeve 33 drives the movable frame 32 to move, and the movable frame 32 drives the second positioning sleeve 38 on the second positioning slide rod 39 The outer side of the second positioning sleeve 38 drives the sliding bar 40 to slide inside the sliding groove 41, which can ensure that the movable frame 32 achieves better stability when moving. At the same time, the movable frame 32 drives the transmission rack 31 to move. As the transmission rack 31 moves, the transmission rack 31 will drive the three transmission gear rings 30 to rotate in sequence. The transmission gear ring 30 drives the transmission shaft 29 to rotate, and the transmission shaft 29 drives the driven bevel gear 28 to rotate. The driven bevel gear 28 drives the speed-increasing bevel gear 27 to rotate rapidly. The speed-increasing bevel gear 27 drives the rotating shaft 22 to rotate, and the rotating shaft 22 drives the heat dissipation fan blades 21 to rotate. The heat dissipation fan blades 21 rotate and blow air through the first heat dissipation holes 3 to the interior of the bus duct body 1, so that the high-temperature air inside the bus duct body 1 is discharged outward through the second heat dissipation holes 5;

[0040] When the movable screw sleeve 33 is reset to the left, the heat dissipation fan blades 21 rotate in the opposite direction, and the blowing operation is converted into the suction operation. The high-temperature air inside the bus duct body 1 can be sucked downward through the first heat dissipation hole 3 through the reverse rotation of the heat dissipation fan blades 21, and then discharged outward through the strip ventilation mesh plate 17. This cycle is repeated. After the temperature sensor 13 detects that the temperature inside the bus duct body 1 returns to normal, the control module 16 controls the drive motor 35 to stop working, so that the fire-proof bus duct can achieve the effect of automatic heat dissipation during use, thereby improving the safety of the fire-proof bus duct and ensuring the normal operation of the power trunk line.

[0041] In addition, the present invention also provides a manufacturing process for a fireproof bus duct with a stepped heat dissipation channel, comprising the following steps:

[0042] Step 1: Cut the steel plates required for manufacturing the fireproof bus duct according to a certain size, and then bend the cut plates into the shape of the shell of the fireproof bus duct;

[0043] Step 2: After the bending process, the heat dissipation fin assembly 10 is evenly fixed and welded to the front and rear sides of the housing, and two symmetrical connecting screw sleeves 26 are fixed and welded to the corresponding positions at both ends of the bottom of the housing;

[0044] Step 3: A first circular groove 2 is evenly formed on the bottom of the bent shell, and a first heat dissipation hole 3 is evenly formed inside the first circular groove 2, and then a second circular groove 4 is evenly formed on the front and back sides of the shell, and a second heat dissipation hole 5 is evenly formed inside the second circular groove 4, and then an annular groove 6 with a diameter larger than the diameter of the second heat dissipation hole 5 is formed at one end of the second circular groove 4 close to the outside of the shell, and then a fireproof sealing ring 7 is installed inside the annular groove 6 with a special adhesive, and then a circular metal dustproof screen 8 is fixedly welded to the side of the second circular groove 4 away from the shell, and then an inclined baffle 9 is fixedly welded to the position corresponding to the second circular groove 4 on the inner wall of the shell;

[0045] Step 4: Then install the internal electrical components of the bus duct inside the shell, fill it with silicone wool and install the heat pipe. Then, fix the top cover plate with the mounting bracket 11 and the temperature sensor 13 on the top of the shell to complete the assembly of the bus duct body 1 with the stepped heat dissipation channel.

[0046] Step 5: Place the adjustable heat dissipation assembly 14 at the bottom of the bus duct body 1, align the connecting bolt 25 vertically with the connecting nut 26, and then rotate the connecting bolt 25 to fix the strip shell 15 to the bottom of the bus duct body 1. After the fixation is completed, the top of the strip shell 15 contacts the bottom of the bus duct body 1, and the tops of the three cylinders 20 inside the strip shell 15 contact the bottoms of the three first circular grooves 2 respectively, completing the overall manufacturing and assembly operation of the overall bus duct.

Claims

1. A fireproof bus duct with a stepped heat dissipation channel, comprising a bus duct body (1), characterized in that: three first circular grooves (2) are evenly provided at the bottom of the bus duct body (1), first heat dissipation holes (3) are evenly provided inside the first circular grooves (2), and the tops of the first heat dissipation holes (3) extend to the inside of the bus duct body (1), three second circular grooves (4) are provided on both the front and rear sides of the bus duct body (1), second heat dissipation holes (5) are evenly provided inside the second circular grooves (4), one end of the second heat dissipation hole (5) extends to the inside of the bus duct body (1), the other end of the second heat dissipation hole (5) is provided with an annular groove (6), and a fireproof sealing ring (7) is fixedly installed inside the annular groove (6), and the fireproof sealing ring (7) is made of a ceramic silicone rubber sealing ring. A circular metal dustproof screen (8) is fixedly installed on the side of the second circular groove (4) away from the bus duct body (1); an inclined baffle (9) is fixedly installed on the inner wall of the bus duct body (1) at a position aligned with the second circular groove (4); four heat dissipation fin groups (10) are evenly fixedly installed on the front and rear sides of the bus duct body (1), and the circular metal dustproof screen (8) is located between the heat dissipation fin groups (10); mounting frames (11) are fixedly installed at both ends of the top of the bus duct body (1), and mounting holes (12) are opened at both ends of the mounting frame (11); temperature sensors (13) are evenly fixedly installed on the top of the bus duct body (1), and multiple temperature sensors (13) are located between the two mounting frames (11); and a heat dissipation regulating component (14) is installed at the bottom of the bus duct body (1).

2. A fireproof bus duct with a stepped heat dissipation channel according to claim 1, characterized in that: the heat dissipation regulating component (14) includes a strip shell (15), and the top of the strip shell (15) is an open structure, the cross section of the strip shell (15) is an inverted convex structure, a control module (16) is fixedly installed in the middle of the outer side of the strip shell (15), and the control module (16) is electrically connected to the temperature sensor (13), and strip ventilation mesh plates (17) are evenly fixed and installed at the bottom of both ends of the strip shell (15), and a positioning strip (18) is fixedly installed in the middle of the inner part of the strip shell (15), and the positioning strip (18) is fixedly installed. Four strip-shaped openings (19) are uniformly opened and opened inside the positioning strip (18); three cylinders (20) are uniformly fixedly installed on the top of the positioning strip (18), and the three cylinders (20) are respectively located directly below the three first circular grooves (2); the tops of the three cylinders (20) are in contact with the bottom of the bus duct body (1); heat dissipation blades (21) are provided inside the three cylinders (20); a rotating shaft (22) is fixedly installed at the bottom of the heat dissipation blade (21), and the bottom end of the rotating shaft (22) is rotatably installed inside the positioning strip (18), and the bottom of the rotating shaft (22) extends to the bottom of the positioning strip (18).

3. A fireproof bus duct with a stepped heat dissipation channel according to claim 2, characterized in that a positioning frame (23) is fixedly installed inside the cylinder (20), and the positioning frame (23) is a cross-shaped structure, and the rotating shaft (22) is rotatably installed inside the positioning frame (23).

4. A fireproof bus duct with a stepped heat dissipation channel according to claim 2, characterized in that: connecting seats (24) are fixedly installed on the top of both sides of the strip shell (15), connecting bolts (25) are symmetrically rotated and installed inside the two connecting seats (24), and connecting screw sleeves (26) are symmetrically fixedly installed at both ends of the bottom of the bus duct body (1), and the top of the connecting bolt (25) is threadedly installed on the bottom of the connecting screw sleeve (26).

5. A fireproof bus duct with a stepped heat dissipation channel according to claim 2, characterized in that: a speed-increasing bevel gear (27) is fixedly installed at the bottom of the rotating shaft (22), the outer side of the speed-increasing bevel gear (27) is meshedly connected with a driven bevel gear (28), a transmission shaft (29) is fixedly installed inside the driven bevel gear (28), and both ends of the transmission shaft (29) are rotatably connected to the inner wall of the bar-shaped shell (15), a transmission gear ring (30) is fixedly installed on the outer side of one end of the transmission shaft (29), the bottom of the transmission gear ring (30) is meshedly connected with a transmission rack (31), and the transmission rack (31) is fixedly installed on the outer side of the transmission shaft (29). ) is fixedly installed at the bottom of the strip housing (15), and the cross section of the movable frame (32) is an L-shaped structure. A movable screw sleeve (33) is fixedly installed in the middle of the interior of the movable frame (32). A reciprocating screw rod (34) is installed on the internal thread of the movable screw sleeve (33), and both ends of the reciprocating screw rod (34) are rotatably connected to the inner wall of the strip housing (15). A drive motor (35) is fixedly installed on one side of the strip housing (15), and the drive motor (35) is electrically connected to the control module (16). The output shaft of the drive motor (35) movably passes through one side of the strip housing (15) and is fixedly connected to one end of the reciprocating screw rod (34).

6. A fireproof bus duct with a stepped heat dissipation channel according to claim 5, characterized in that a first positioning sleeve (36) is fixedly installed on the side of the movable screw sleeve (33) away from the movable frame (32), a first positioning slide rod (37) is installed inside the first positioning sleeve (36) and is slidably penetrated, and both ends of the first positioning slide rod (37) are fixedly connected to the inner wall of the strip shell (15).

7. A fireproof bus duct with a stepped heat dissipation channel according to claim 5, characterized in that a second positioning sleeve (38) is fixedly installed on the side of the movable frame (32) away from the movable screw sleeve (33), a second positioning slide rod (39) is installed inside the second positioning slide sleeve (38) and is slidably penetrated, and both ends of the second positioning slide rod (39) are fixedly connected to the inner wall of the strip shell (15).

8. A fireproof bus duct with a stepped heat dissipation channel according to claim 7, characterized in that four sliding bars (40) are symmetrically fixedly installed on the inner wall of the second positioning sleeve (38), four sliding grooves (41) are symmetrically opened on the outer side of the second positioning slide rod (39), and the four sliding bars (40) are respectively slidably installed inside the four sliding grooves (41).

9. A manufacturing process for a fireproof bus duct with a stepped heat dissipation channel, using the fireproof bus duct with a stepped heat dissipation channel according to any one of claims 1 to 8, characterized in that it comprises the following steps: Step 1: Cut the steel plates required for manufacturing the fireproof bus duct according to a certain size, and then bend the cut plates into the shape of the shell of the fireproof bus duct; Step 2: After the shell is bent and formed, the heat dissipation fin group (10) is evenly fixed and welded on the front and rear sides, and two symmetrical connecting screw sleeves (26) are fixed and welded at corresponding positions at both ends of the bottom of the shell; Step 3: evenly opening a first circular groove (2) at the bottom of the shell after bending and forming, and evenly opening a first heat dissipation hole (3) inside the first circular groove (2), then evenly opening a second circular groove (4) on the front and back sides of the shell, and evenly opening a second heat dissipation hole (5) inside the second circular groove (4), then opening an annular groove (6) with a diameter larger than the diameter of the second heat dissipation hole (5) at one end of the second circular groove (4) close to the outside of the shell, then installing a fireproof sealing ring (7) inside the annular groove (6) by means of a special adhesive, then fixing and welding a circular metal dustproof screen (8) on the side of the second circular groove (4) away from the shell, and then fixing and welding an inclined baffle (9) on the inner wall of the shell at a position corresponding to the second circular groove (4); Step 4: Then install the internal electrical components of the bus duct inside the shell, fill it with silicon wool and install the heat pipe, and then fix the top cover plate with the mounting frame (11) and the temperature sensor (13) on the top of the shell to complete the assembly of the bus duct body (1) with the stepped heat dissipation channel; Step 5: Place the heat dissipation adjustment component (14) at the bottom of the bus duct body (1), align the connecting bolt (25) and the connecting nut (26) vertically, and then rotate the connecting bolt (25) to fix the strip shell (15) to the bottom of the bus duct body (1). After the fixing is completed, the top of the strip shell (15) contacts the bottom of the bus duct body (1), and the tops of the three cylinders (20) inside the strip shell (15) contact the bottoms of the three first circular grooves (2) respectively, completing the manufacturing and assembly operation of the overall bus duct.

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