A dense waterproof and fire-resistant busbar trunking

Abstract

This invention provides a compact waterproof and fire-resistant busbar trunking system, relating to the field of busbar trunking technology. The compact waterproof and fire-resistant busbar trunking system includes a lower U-shaped shell, to which an upper U-shaped shell is detachably connected. In this invention, the upper U-shaped sliding cover moves along a pushing bar. When the pushing bar contacts a pushing disc, the pushing disc moves along a pushing connecting rod, which in turn moves a piston block. The piston block pushes coolant from inside the piston cylinder into the connecting and fixing pipe. The coolant inside the connecting and fixing pipe enters the rectangular airbag, causing the rectangular airbag to expand and make close contact with the outer surface of the conductive copper busbar. This not only achieves a sealing effect but also cools the conductive copper busbar through the contact of the cold rectangular airbag. Multiple heat dissipation fins further cool the coolant inside the connecting and fixing pipe, maintaining a long-term heat dissipation effect.

Description

Technical Field

[0001] This invention relates to the field of busbar technology, specifically a dense, waterproof, and fire-resistant busbar. Background Technology

[0002] Currently, busbar trunking is a closed metal device made of copper and aluminum busbar columns, used to distribute a large amount of power to various components of a distributed system. It has increasingly replaced wires and cables in indoor low-voltage power transmission trunk line projects.

[0003] Patent publication number CN215580245U discloses a utility model relating to the field of electrical technology, specifically a dense waterproof and fire-resistant busbar trunking. It utilizes the conductivity of conductive busbars to transmit electricity. An insulating partition separates the conductive busbars from the mounting base, preventing them from conducting through each other. A waterproof layer encases the insulating partition and the conductive busbars, preventing external moisture from entering and damaging them. A fireproof partition, fixed within the mounting base, provides flame retardancy against external fires, ensuring the conductive busbars continue to operate normally even when heat from an external fire reaches the mounting base. By incorporating the waterproof and fireproof partitions, the busbars within the trunking remain operational even when heated or exposed to water, thus guaranteeing the normal operation of the entire power supply system.

[0004] In the aforementioned patents, although the busbar trunking has fireproof and waterproof capabilities, the conductive bars inside the busbar trunking are in a relatively closed state, which makes the ventilation and heat dissipation of the busbar trunking poor. Moreover, in existing patents, the two ends of the conductive bars are exposed, resulting in poor dustproof and fireproof effects. Summary of the Invention

[0005] Technical problem solved: In view of the shortcomings of the prior art, the present invention provides a dense waterproof and fire-resistant busbar trunking, which solves the problem that the conductive busbar inside the busbar trunking is in a relatively closed state, which makes the ventilation and heat dissipation of the busbar trunking poor. Moreover, in the prior art, the two ends of the conductive busbar are exposed, resulting in poor dust and fire protection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dense waterproof and fire-resistant busbar trunking system, comprising a lower U-shaped shell, an upper U-shaped shell detachably connected to the outer side of the lower U-shaped shell, two upper U-shaped sliding covers slidably connected to the outer surface of the upper U-shaped shell, a pushing rod fixedly connected to the lower surface of one side of each upper U-shaped sliding cover, a driving assembly for moving the two upper U-shaped sliding covers connected to the upper surface of the upper U-shaped shell, four ventilation pipes fixedly connected to the upper surface of the upper U-shaped shell, a fixed mounting base fixedly connected to the outer surface of each ventilation pipe, and a sealing assembly provided above the fixed mounting base. The lower U-shaped housing has two fixed mounting brackets fixedly connected to its inner wall, with multiple conductive copper busbars disposed between the two mounting brackets. The lower U-shaped housing also has two fixed connecting tubes fixedly connected inside, each located on opposite sides of the two mounting brackets. Multiple sets of rectangular airbags are fixedly connected to the upper surface of each connecting tube, with two airbags in each set. The two rectangular airbags are located on opposite sides of the corresponding conductive copper busbars. Multiple heat dissipation fins are fixedly connected to the lower surface of the connecting tubes. A liquid supply assembly connected to the connecting tubes is installed on the side wall of the lower U-shaped housing.

[0007] Preferably, two third rectangular blocks are fixedly connected to the lower surfaces of both sides of the upper U-shaped shell. The third rectangular blocks are connected to the lower U-shaped shell by bolts. A first rectangular block is fixedly connected to both sides of the upper U-shaped shell. A positioning rod is fixedly connected to the lower surface of the first rectangular block. A second rectangular block is fixedly connected to both sides of the lower U-shaped shell. The positioning rod is inserted into the corresponding second rectangular block.

[0008] Preferably, two sliding grooves are provided on both sides of the upper U-shaped shell. A movable slider is slidably connected inside the sliding groove. The movable slider is fixedly connected to the inner wall of the upper U-shaped sliding cover. A first mounting spring is fixedly connected to one side of the movable slider. The end of the first mounting spring away from the movable slider is fixedly connected to the inner wall of the sliding groove.

[0009] Preferably, multiple first grooves are provided on both sides of the lower U-shaped housing, and a first sealing strip is fixedly connected inside the first groove. The first sealing strip is in contact with the inner wall of the upper U-shaped housing. Two second grooves are provided on the inner top of the upper U-shaped housing, and a second sealing strip is fixedly connected inside the second groove. The second sealing strip is in contact with the top of the corresponding fixing bracket.

[0010] Preferably, the driving assembly includes a first vertical block fixedly connected to the upper surface of the upper U-shaped housing. A rotating mounting rod is rotatably connected through the side wall of the first vertical block. Both ends of the rotating mounting rod are threaded with threaded rotating rods. A second vertical block is fixedly connected to the opposite ends of the two threaded rotating rods. The two second vertical blocks are respectively fixedly connected to two upper U-shaped sliding covers. When the rotating mounting rod is manually rotated, the two threaded rotating rods move in opposite directions, causing the two second vertical blocks to move in opposite directions along with the two upper U-shaped sliding covers. This moves the upper U-shaped sliding covers above the ends of the conductive copper busbars, where they cooperate with the lower U-shaped fixed cover to provide dust and fire protection for the ends of the conductive copper busbars.

[0011] Preferably, the sealing assembly includes a movable float plate fitted onto the outer surface of the ventilation duct. Lifting connecting frames are fixedly connected to both sides of the movable float plate. A fixing plate is fixedly connected to the inner wall of the ventilation duct. A conical opening is formed through the surface of the fixing plate. A conical sealing column is positioned below the fixing plate, and the conical sealing column is adapted to the conical opening. Two connecting mounting blocks are fixedly connected to the outer surface of the conical sealing column. The end of the lifting connecting frame away from the movable float plate passes through the fixing plate and is fixedly connected to the corresponding connecting mounting block. The buoyancy of the water causes the movable float plate to rise. The movable float plate slides upwards on the outer surface of the ventilation duct, and the two lifting connecting frames, carrying the conical sealing column, rise, causing the conical sealing column to insert into the conical opening, thus closing the ventilation duct passage.

[0012] Preferably, fixed connecting frames are fixedly connected to both sides of the upper U-shaped shell, and a baffle plate is fixedly connected between the two fixed connecting frames. The baffle plate is located above the four ventilation pipes, which are connected to the upper U-shaped shell. The baffle plate can protect the area above the four ventilation pipes from the influence of dust and water.

[0013] Preferably, the liquid supply assembly includes a piston cylinder fixedly connected to the side wall of the lower U-shaped housing. One end of the piston cylinder is fixedly connected to a delivery pipe, and the end of the delivery pipe away from the piston cylinder extends to the inner wall of the lower U-shaped housing and is fixedly connected to a connecting pipe. The other end of the piston cylinder is provided with a push connecting rod. One end of the push connecting rod is fixedly connected to a push disc, which is adapted to a push bar. The other end of the push connecting rod is fixedly connected to a piston block, which is slidably connected inside the piston cylinder. A second mounting spring is sleeved on the outer surface of the push connecting rod. One end of the second mounting spring is fixedly connected to the piston block, and the other end of the second mounting spring is fixedly connected to the inside of the piston cylinder. When the push bar contacts the push disc, the push disc moves the push connecting rod, and the push connecting rod moves the piston block. The piston block pushes the coolant inside the piston cylinder into the inside of the connecting pipe. The coolant inside the connecting pipe enters the inside of the rectangular airbag, causing the rectangular airbag to expand and make close contact with the outer surface of the conductive copper busbar.

[0014] Preferably, one end of the heat dissipation fin extends into the interior of the connecting and fixing tube, and the other end of the heat dissipation fin extends into the exterior of the lower U-shaped housing. Both ends of the lower U-shaped housing are fixedly connected with lower U-shaped fixing covers, which are located below the conductive copper busbar. Multiple heat dissipation fins cool the coolant inside the connecting and fixing tube, maintaining a long-term heat dissipation effect.

[0015] This invention provides a dense, waterproof, and fire-resistant busbar trunking system. It offers the following advantages:

[0016] In this invention, the upper U-shaped sliding cover moves along a pushing bar. When the pushing bar contacts the pushing disc, the pushing disc moves along a pushing connecting rod, which in turn moves a piston block. The piston block pushes the coolant inside the piston cylinder into the connecting and fixing pipe. The coolant inside the connecting and fixing pipe enters the rectangular airbag, causing the rectangular airbag to expand and make close contact with the outer surface of the conductive copper busbar. This not only achieves a sealing effect but also cools the cool rectangular airbag by contacting the conductive copper busbar. Multiple heat dissipation fins further cool the coolant inside the connecting and fixing pipe, maintaining a long-term heat dissipation effect.

[0017] In this invention, the rotating mounting rod is manually rotated. When the rotating mounting rod rotates, the two threaded rotating rods move in opposite directions, causing the two second vertical blocks to move in opposite directions along with the two upper U-shaped sliding covers. The upper U-shaped sliding covers are moved to the top of the conductive copper busbar and cooperate with the lower U-shaped fixing cover to prevent dust and fire from entering the end of the conductive copper busbar.

[0018] Under normal circumstances, the four ventilation pipes of this invention are open, allowing for normal gas exchange. When the busbar is submerged in water, the buoyancy of the water causes the movable float to rise. The movable float slides upward on the outer surface of the ventilation pipes, and the two lifting connecting frames, along with the conical sealing columns, rise, causing the conical sealing columns to insert into the conical openings and close the ventilation pipes. Even if the entire busbar is subsequently submerged in water, water will not enter the interior of the busbar, providing excellent protection.

[0019] In this invention, when the two upper U-shaped sliding covers approach each other, the piston block is reset by the action of the second mounting spring, and the coolant in the rectangular airbag flows back into the interior of the connecting fixing tube, which facilitates disassembly. Attached Figure Description

[0020] Figure 1 A first-view three-dimensional structural diagram of a dense waterproof and fire-resistant busbar trunking provided by the present invention;

[0021] Figure 2 A second-view three-dimensional structural diagram of a dense waterproof and fire-resistant busbar trunking provided by the present invention;

[0022] Figure 3 A schematic diagram of the upper U-shaped shell structure of a dense waterproof and fire-resistant busbar trunking provided by the present invention;

[0023] Figure 4 This invention provides a schematic diagram of the lower U-shaped shell structure of a dense waterproof and fire-resistant busbar trunking.

[0024] Figure 5 A schematic diagram of a fixed clamping base structure for a dense waterproof and fire-resistant busbar trunking provided by the present invention;

[0025] Figure 6 A schematic diagram of the internal structure of the ventilation pipe of a dense waterproof and fire-resistant busbar trunking provided by the present invention;

[0026] Figure 7 A schematic diagram of a rectangular airbag structure for a dense waterproof and fire-resistant busbar trunking provided by the present invention;

[0027] Figure 8 This is a schematic diagram of the internal structure of the piston cylinder of a dense waterproof and fire-resistant busbar trunking provided by the present invention.

[0028] The components include: 1. Lower U-shaped shell; 2. Upper U-shaped shell; 3. First rectangular block; 4. Positioning rod; 5. Second rectangular block; 6. Upper U-shaped sliding cover; 7. Sliding groove; 8. First mounting spring; 9. First vertical block; 10. Rotating mounting rod; 11. Threaded rotating rod; 12. Second vertical block; 13. Ventilation pipe; 14. Fixed mounting base; 15. Movable float; 16. Lifting connecting frame; 17. Fixed plate; 18. Conical opening; 19. Conical... 20. Sealing column; 21. Connecting mounting block; 22. Fixed connecting bracket; 23. Baffle plate; 24. Third rectangular block; 25. First sealing strip; 26. Fixed snap-fit ​​seat; 27. Conductive copper busbar; 28. Connecting fixing pipe; 29. ​​Rectangular airbag; 30. Heat dissipation fins; 31. Piston cylinder; 32. Conveying pipe; 33. Push connecting rod; 34. Pushing disc; 35. Piston block; 36. Second mounting spring; 37. Lower U-shaped fixing cover; 38. Pushing straight bar. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example: Figures 1-8 As shown, this embodiment of the invention provides a dense waterproof and fire-resistant busbar trunking, including a lower U-shaped shell 1. An upper U-shaped shell 2 is detachably connected to the outside of the lower U-shaped shell 1. Two third rectangular blocks 23 are fixedly connected to the lower surfaces of both sides of the upper U-shaped shell 2. The third rectangular blocks 23 are connected to the lower U-shaped shell 1 by bolts. A first rectangular block 3 is fixedly connected to both sides of the upper U-shaped shell 2. A positioning rod 4 is fixedly connected to the lower surface of the first rectangular block 3. A second rectangular block 5 is fixedly connected to both sides of the lower U-shaped shell 1. The positioning rod 4 is inserted into the corresponding second rectangular block 5.

[0031] Two upper U-shaped covers 6 are slidably connected to the outer surface of the upper U-shaped housing 2. Two sliding grooves 7 are opened on both sides of the upper U-shaped housing 2. A movable slider is slidably connected inside the sliding groove 7. The movable slider is fixedly connected to the inner wall of the upper U-shaped cover 6. A first mounting spring 8 is fixedly connected to one side of the movable slider. The end of the first mounting spring 8 away from the movable slider is fixedly connected to the inner wall of the sliding groove 7. Multiple first slots are opened on both sides of the lower U-shaped housing 1. A first sealing strip 24 is fixedly connected inside the first slot. The first sealing strip 24 fits against the inner wall of the upper U-shaped housing 2. Two second slots are opened on the inner top of the upper U-shaped housing 2. A second sealing strip is fixedly connected inside the second slot. The second sealing strip fits against the top of the corresponding fixed card seat 25.

[0032] A push bar 37 is fixedly connected to the lower surface of one side of the upper U-shaped sliding cover 6. A drive assembly for driving the two upper U-shaped sliding covers 6 to move is connected to the upper surface of the upper U-shaped housing 2. The drive assembly includes a first vertical block 9 fixedly connected to the upper surface of the upper U-shaped housing 2. A rotating mounting rod 10 is rotatably connected through the side wall of the first vertical block 9. Threaded rotating rods 11 are threadedly connected to both ends of the rotating mounting rod 10. A second vertical block 12 is fixedly connected to the opposite ends of the two threaded rotating rods 11. The two second vertical blocks 12 are fixedly connected to the two upper U-shaped sliding covers 6 respectively. When the rotating mounting rod 10 is manually rotated, the two threaded rotating rods 11 move in opposite directions, causing the two second vertical blocks 12 to move the two upper U-shaped sliding covers 6 in opposite directions, so that the upper U-shaped sliding covers 6 move to the top of the conductive copper busbar 26 and cooperate with the lower U-shaped fixed cover 36 to prevent dust and fire from entering the end of the conductive copper busbar 26.

[0033] Four ventilation pipes 13 are fixedly connected to the upper surface of the upper U-shaped shell 2. Fixed mounting bases 14 are fixedly connected to the outer surface of each ventilation pipe 13. A sealing assembly is provided above the fixed mounting bases 14. The sealing assembly includes a movable float 15, which is fitted onto the outer surface of the ventilation pipe 13. Lifting connecting frames 16 are fixedly connected to both sides of the movable float 15. A fixing plate 17 is fixedly connected to the inner wall of the ventilation pipe 13. A conical opening 18 is provided through the surface of the fixing plate 17. A conical sealing column 19 is provided below the fixing plate 17, and the conical sealing column 19 is adapted to the conical opening 18. Two connecting mounting bases are fixedly connected to the outer surface of the conical sealing column 19. Block 20, the lifting connecting frame 16, the end away from the movable float 15, passes through the fixed plate 17 and is fixedly connected to the corresponding connecting mounting block 20. Fixed connecting frames 21 are fixedly connected to both sides of the upper U-shaped shell 2. A baffle plate 22 is fixedly connected between the two fixed connecting frames 21. The baffle plate 22 is located above the four ventilation pipes 13. The ventilation pipes 13 are connected to the upper U-shaped shell 2. The buoyancy of the water causes the movable float 15 to rise. The movable float 15 slides upward on the outer surface of the ventilation pipe 13. The two lifting connecting frames 16 rise with the conical sealing column 19, so that the conical sealing column 19 is inserted into the inside of the conical opening 18, so that the passage of the ventilation pipe 13 is closed.

[0034] Two fixing brackets 25 are fixedly connected to the inner wall of the lower U-shaped housing 1. Multiple conductive copper busbars 26 are arranged between the two fixing brackets 25. Two connecting fixing tubes 27 are fixedly connected inside the lower U-shaped housing 1. The two connecting fixing tubes 27 are located on opposite sides of the two fixing brackets 25. Multiple sets of rectangular airbags 28 are fixedly connected to the upper surface of the connecting fixing tubes 27. Each set of rectangular airbags 28 consists of two airbags. The two rectangular airbags 28 are located on both sides of the corresponding conductive copper busbars 26. Multiple heat dissipation fins 29 are fixedly connected to the lower surface of the connecting fixing tubes 27. One end of the heat dissipation fins 29 extends into the interior of the connecting fixing tubes 27, and the other end of the heat dissipation fins 29 extends into the exterior of the lower U-shaped housing 1. Lower U-shaped fixing covers 36 are fixedly connected to both ends of the lower U-shaped housing 1. The lower U-shaped fixing covers 36 are located below the conductive copper busbars 26.

[0035] A liquid supply assembly connected to a connecting and fixing pipe 27 is installed on the side wall of the lower U-shaped housing 1. The liquid supply assembly includes a piston cylinder 30 fixedly connected to the side wall of the lower U-shaped housing 1. One end of the piston cylinder 30 is fixedly connected to a delivery pipe 31. The end of the delivery pipe 31 away from the piston cylinder 30 extends to the inner wall of the lower U-shaped housing 1 and is fixedly connected to the connecting and fixing pipe 27. A push connecting rod 32 is inserted into the other end of the piston cylinder 30. A push disk 33 is fixedly connected to one end of the push connecting rod 32. The push disk 33 is adapted to the push bar 37. A piston block 34 is fixedly connected to the other end of the push connecting rod 32. The piston block 34 is slidably connected to the piston cylinder. Inside the body 30, a second mounting spring 35 is fitted on the outer surface of the push connecting rod 32. One end of the second mounting spring 35 is fixedly connected to the piston block 34, and the other end of the second mounting spring 35 is fixedly connected to the inside of the piston cylinder 30. When the push bar 37 contacts the push disc 33, the push disc 33 moves the push connecting rod 32, and the push connecting rod 32 moves the piston block 34. The piston block 34 pushes the coolant inside the piston cylinder 30 into the connecting fixing pipe 27. The coolant inside the connecting fixing pipe 27 enters the rectangular airbag 28, causing the rectangular airbag 28 to expand and make close contact with the outer surface of the conductive copper busbar 26.

[0036] Working principle: When in use, place the upper U-shaped housing 2 on the outer surface of the lower U-shaped housing 1, and let the positioning rod 4 be inserted into the corresponding second rectangular block 5 to complete the positioning of the upper U-shaped housing 2 and the lower U-shaped housing 1. Then, the third rectangular block 23 is connected to the lower U-shaped housing 1 by bolts to complete the fixing of the upper U-shaped housing 2 and the lower U-shaped housing 1.

[0037] Manually rotate the rotating mounting rod 10. When the rotating mounting rod 10 rotates, the two threaded rotating rods 11 move in opposite directions, causing the two second vertical blocks 12 to move in opposite directions along with the two upper U-shaped sliding covers 6. This allows the upper U-shaped sliding covers 6 to move above the end of the conductive copper busbar 26 and cooperate with the lower U-shaped fixing cover 36 to prevent dust and fire from entering the end of the conductive copper busbar 26.

[0038] When the upper U-shaped sliding cover 6 moves, the upper U-shaped sliding cover 6 moves along with the pushing bar 37. When the pushing bar 37 contacts the pushing disc 33, the pushing disc 33 moves along with the pushing connecting rod 32. The pushing connecting rod 32 moves along with the piston block 34. The piston block 34 pushes the coolant inside the piston cylinder 30 into the connecting and fixing pipe 27. The coolant inside the connecting and fixing pipe 27 enters the rectangular airbag 28, causing the rectangular airbag 28 to expand and make close contact with the outer surface of the conductive copper busbar 26. This not only achieves a sealing effect, but also cools the rectangular airbag 28 by contacting the conductive copper busbar 26. Multiple heat dissipation fins 29 cool the coolant inside the connecting and fixing pipe 27, maintaining a long-term heat dissipation effect.

[0039] When the two upper U-shaped sliding covers 6 approach each other, the piston block 34 is reset by the action of the second mounting spring 35, and the coolant in the rectangular airbag 28 flows back into the interior of the connecting fixing pipe 27, which facilitates disassembly.

[0040] Under normal circumstances, the four ventilation pipes 13 are open, allowing for normal gas exchange. When the busbar is submerged in water, the buoyancy of the water causes the movable float 15 to rise. The movable float 15 slides upward on the outer surface of the ventilation pipes 13, and the two lifting connecting frames 16 raise the conical sealing column 19, causing the conical sealing column 19 to insert into the conical opening 18, thus closing the passage of the ventilation pipes 13. Even if the entire busbar is subsequently submerged in water, water will not enter the interior of the busbar.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dense waterproof and fire-resistant busbar trunking, comprising a lower U-shaped shell (1), characterized in that: The lower U-shaped housing (1) is detachably connected to an upper U-shaped housing (2). Two upper U-shaped sliding covers (6) are slidably connected to the outer surface of the upper U-shaped housing (2). A push bar (37) is fixedly connected to the lower surface of one side of each upper U-shaped sliding cover (6). A drive assembly for moving the two upper U-shaped sliding covers (6) is connected to the upper surface of the upper U-shaped housing (2). Four ventilation pipes (13) are fixedly connected to the upper surface of the upper U-shaped housing (2). A fixed mounting base (14) is fixedly connected to the outer surface of each ventilation pipe (13). A sealing assembly is provided above the fixed mounting base (14). Two fixed snap-fit ​​seats (25) are fixedly connected to the inner wall of the lower U-shaped housing (1). Multiple conductive copper busbars (26) are provided between the fixed card holders (25). Two connecting fixed tubes (27) are fixedly connected inside the lower U-shaped housing (1). The two connecting fixed tubes (27) are located on opposite sides of the two fixed card holders (25). Multiple sets of rectangular airbags (28) are fixedly connected to the upper surface of the connecting fixed tubes (27). Each set of rectangular airbags (28) consists of two airbags. The two rectangular airbags (28) are located on opposite sides of the corresponding conductive copper busbars (26). Multiple heat dissipation fins (29) are fixedly connected to the lower surface of the connecting fixed tubes (27). A liquid supply assembly connected to the connecting fixed tubes (27) is installed on the side wall of the lower U-shaped housing (1).

2. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: Two third rectangular blocks (23) are fixedly connected to the lower surfaces of both sides of the upper U-shaped shell (2). The third rectangular blocks (23) are connected to the lower U-shaped shell (1) by bolts. A first rectangular block (3) is fixedly connected to both sides of the upper U-shaped shell (2). A positioning rod (4) is fixedly connected to the lower surface of the first rectangular block (3). A second rectangular block (5) is fixedly connected to both sides of the lower U-shaped shell (1). The positioning rod (4) is inserted into the corresponding second rectangular block (5).

3. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: Two sliding grooves (7) are provided on both sides of the upper U-shaped shell (2). A movable slider is slidably connected inside the sliding groove (7). The movable slider is fixedly connected to the inner wall of the upper U-shaped cover (6). A first mounting spring (8) is fixedly connected to one side of the movable slider. The end of the first mounting spring (8) away from the movable slider is fixedly connected to the inner wall of the sliding groove (7).

4. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: Multiple first grooves are provided on both sides of the lower U-shaped housing (1). A first sealing strip (24) is fixedly connected inside the first groove. The first sealing strip (24) fits against the inner wall of the upper U-shaped housing (2). Two second grooves are provided on the inner top of the upper U-shaped housing (2). A second sealing strip is fixedly connected inside the second groove. The second sealing strip fits against the top of the corresponding fixed card seat (25).

5. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: The drive assembly includes a first vertical block (9) fixedly connected to the upper surface of the upper U-shaped housing (2). A rotating mounting rod (10) is rotatably connected through the side wall of the first vertical block (9). Both ends of the rotating mounting rod (10) are threadedly connected to threaded rotating rods (11). A second vertical block (12) is fixedly connected to the opposite ends of the two threaded rotating rods (11). The two second vertical blocks (12) are fixedly connected to the two upper U-shaped sliding covers (6) respectively.

6. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: The sealing assembly includes a movable float (15), which is sleeved on the outer surface of the ventilation pipe (13). Lifting connecting frames (16) are fixedly connected to both sides of the movable float (15). A fixing plate (17) is fixedly connected to the inner wall of the ventilation pipe (13). A conical opening (18) is opened through the surface of the fixing plate (17). A conical sealing column (19) is provided below the fixing plate (17). The conical sealing column (19) is adapted to the conical opening (18). Two connecting mounting blocks (20) are fixedly connected to the outer surface of the conical sealing column (19). The end of the lifting connecting frame (16) away from the movable float (15) passes through the fixing plate (17) and is fixedly connected to the corresponding connecting mounting block (20).

7. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: Both sides of the upper U-shaped shell (2) are fixedly connected to fixed connecting brackets (21), and a baffle plate (22) is fixedly connected between the two fixed connecting brackets (21). The baffle plate (22) is located above the four ventilation pipes (13), and the ventilation pipes (13) are connected to the upper U-shaped shell (2).

8. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: The liquid supply assembly includes a piston cylinder (30) fixedly connected to the side wall of the lower U-shaped housing (1). One end of the piston cylinder (30) is fixedly connected to a delivery pipe (31). The end of the delivery pipe (31) away from the piston cylinder (30) extends to the inner wall of the lower U-shaped housing (1) and is fixedly connected to a connecting and fixing pipe (27). The other end of the piston cylinder (30) is provided with a push connecting rod (32). One end of the push connecting rod (32) is fixedly connected to a push disc (33). The push disc (33) is adapted to a push bar (37). The other end of the push connecting rod (32) is fixedly connected to a piston block (34). The piston block (34) is slidably connected to the inside of the piston cylinder (30). The outer surface of the push connecting rod (32) is fitted with a second mounting spring (35). One end of the second mounting spring (35) is fixedly connected to the piston block (34), and the other end of the second mounting spring (35) is fixedly connected to the inside of the piston cylinder (30).

9. The dense waterproof and fire-resistant busbar trunking according to claim 1, characterized in that: One end of the heat dissipation fin (29) extends into the interior of the connecting fixing tube (27), and the other end of the heat dissipation fin (29) extends into the exterior of the lower U-shaped housing (1). Both ends of the lower U-shaped housing (1) are fixedly connected with lower U-shaped fixing covers (36), which are located below the conductive copper busbar (26).

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