A tubular busway with a connection structure

Abstract

The present invention provides a tubular busbar with a connection structure, belonging to the technical field of busbars. It includes an outer tube structure, and the outer tube structure includes a first outer shell and a second outer shell that are fixedly connected to form a tube; a sheet placement structure, which is located between the first outer shell and the second outer shell and is connected to the first outer shell and the second outer shell. An A-phase aluminum sheet, a B-phase aluminum sheet, a C-phase aluminum sheet, a grounding aluminum sheet, and an N-phase aluminum sheet are fixedly connected to the sheet placement structure. By setting the sheet placement structure and the outer tube structure, the sheet placement structure is used for quickly installing the A-phase aluminum sheet, B-phase aluminum sheet, C-phase aluminum sheet, grounding aluminum sheet, and N-phase aluminum sheet, reducing the installation process and increasing the installation efficiency. At the same time, it dissipates the heat generated during its operation. The outer tube structure is adapted to the sheet placement structure, and through the outer tube structure, the quick positioning and limiting of the sheet placement structure during assembly can be achieved, reducing the assembly time.

Description

Technical Field

[0001] The present invention relates to the technical field of bus ducts, and particularly relates to a tubular bus duct with a connection structure. Background Art

[0002] A bus duct is a busbar system composed of a metal plate as a protective shell, busbars, insulating materials, and related accessories. It can be made into a plug-in type enclosed bus duct with a plug-in distribution box provided at intervals, or a feed-through type enclosed bus duct without a distribution box in the middle. Among them, due to its tubular structure, compared with traditional bus ducts, the tubular bus duct may be more convenient for installation and maintenance, and the tubular bus duct usually occupies less space, which helps to save the installation space.

[0003] In the production and manufacturing process of the existing tubular bus ducts, the installation of aluminum sheets of each phase inside is relatively complex, and rapid positioning and installation cannot be achieved. At the same time, when installing the connection structure between bus ducts, various cumbersome positioning operations are required, and installation can only start after accurate positioning. Therefore, the present application provides a tubular bus duct with a connection structure to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a tubular bus duct with a connection structure to solve the problems that in the production and manufacturing process of the existing tubular bus ducts, the installation of aluminum sheets of each phase inside is relatively complex, rapid positioning and installation cannot be achieved, and at the same time, when installing the connection structure between bus ducts, various cumbersome positioning operations are required, and installation can only start after accurate positioning.

[0005] To solve the above technical problems, the present invention provides the following technical solutions:

[0006] A tubular bus duct with a connection structure includes an outer tube structure, where the outer tube structure includes a first outer shell and a second outer shell that are fixedly formed into a tube; a sheet placement structure, which is located between the first outer shell and the second outer shell and is connected to the first outer shell and the second outer shell. An A-phase aluminum sheet, a B-phase aluminum sheet, a C-phase aluminum sheet, a grounding aluminum sheet, and an N-phase aluminum sheet are fixedly connected to the sheet placement structure. Among them, the structures and specifications of the A-phase aluminum sheet, the B-phase aluminum sheet, the C-phase aluminum sheet, the grounding aluminum sheet, and the N-phase aluminum sheet are the same. The sheet placement structure is used for quickly installing the A-phase aluminum sheet, the B-phase aluminum sheet, the C-phase aluminum sheet, the grounding aluminum sheet, and the N-phase aluminum sheet, reducing the installation process, increasing the installation efficiency, and at the same time dissipating the heat generated during their operation; an outer tube connection structure, which is located between two outer tube structures and is used for connecting the two outer tube structures, and at the same time increasing the connection stability.

[0007] Optionally, both the first housing and the second housing are semi-circular structures with the same specifications. Three groups of matching grooves corresponding to each other are provided on the inner walls of the first housing and the second housing. Each group of matching grooves is composed of four placement card slots that are 45° to each other; docking grooves are provided on both side surfaces of the second housing connected to the first housing, and a matching docking protrusion is fixedly connected to the position of the first housing corresponding to the docking groove; annular grooves are provided at corresponding positions on the side surfaces at both ends of the first housing and the second housing, and side rings are fixedly connected in the annular grooves. Symmetrically arranged limiting blocks are fixedly connected to both ends of the first housing and the second housing, and the limiting blocks are of a convex-shaped structure; connection card slots are provided at corresponding positions on the outer walls of both ends of the first housing and the second housing.

[0008] Optionally, the placement structure includes a first placement unit, a second placement unit, a third placement unit, and a fourth placement unit that are clamped to the inner walls of the first housing and the second housing and are connected end to end to form a cylindrical shape. The outer shapes of the first placement unit, the second placement unit, the third placement unit, and the fourth placement unit are all the same sector-shaped columns, and limiting bars are fixedly connected to the positions of the outer walls of the first placement unit, the second placement unit, the third placement unit, and the fourth placement unit corresponding to the placement card slots.

[0009] Optionally, the first chip placing unit includes a first base clamped to the inner surface wall of the second housing. A first square groove is formed at the top of the first base. Two symmetric first rotating plates are rotatably connected to both ends of the top of the first base. When the two first rotating plates are in the initial position, their bottoms are parallel to the bottom of the first square groove and form a grounding groove with the first square groove. A second square groove that communicates with each other is formed at the top of each of the two first rotating plates. The second square groove and the first square groove have the same specifications. Two symmetric second rotating plates are rotatably connected to the outer edges of the two first rotating plates. When the two second rotating plates are in the initial position, their bottoms are parallel to the bottom of the second square groove and form a C-phase groove with the second square groove. A plurality of uniformly arranged heat dissipation grooves are formed at the top of the second rotating plate. The second chip placing unit includes a second base clamped between the first housing and the second housing. A third square groove is formed at the top of the second base. Both sides of the top of the second base are rotatably connected to the second rotating plates. A B-phase groove is formed between the two second rotating plates and the third square groove. The outer shape of the second base is the same as the shape of the first base and the two first rotating plates when they are in the initial position. The second chip placing unit, the third chip placing unit, and the fourth chip placing unit have the same shape and structure. An A-phase groove and an N-phase groove are respectively provided on the third chip placing unit and the fourth chip placing unit. A C-phase aluminum sheet is installed in the C-phase groove, a grounding aluminum sheet is installed in the grounding groove, a B-phase aluminum sheet is installed in the B-phase groove, an A-phase aluminum sheet is installed in the A-phase groove, and an N-phase aluminum sheet is installed in the N-phase groove. An elastic unit for respectively extruding and limiting the A-phase aluminum sheet, the B-phase aluminum sheet, the C-phase aluminum sheet, the grounding aluminum sheet, and the N-phase aluminum sheet and a clamping unit for respectively clamping the two first rotating plates and the two second rotating plates are further included.

[0010] Optionally, the elastic unit includes extension grooves respectively formed at the bottoms of the first square groove, the second square groove, and the third square groove. Extrusion sliding grooves are formed at both ends of the bottom of the extension groove. A pressing piece is provided at the top of the extension groove. Four symmetric pressing piece sliders are fixedly connected to the bottom of the pressing piece. The pressing piece is slidably connected to the extrusion sliding groove through the pressing piece sliders. The pressing piece slider is of an L-shaped structure. The thickness of the pressing piece gradually changes from thick to thin from the middle to both sides.

[0011] Optionally, the clamping unit includes a fastening clamping block fixedly connected to one side of one of the second rotating plates. A fastening clamping groove is formed at a position corresponding to the fastening clamping block on the other second rotating plate. The two second rotating plates are clamped and fixed to each other through the fastening clamping block and the fastening clamping groove. An inner groove is formed at the top of the opening end of the fastening clamping groove.

[0012] Optionally, the outer tube connection structure includes a sleeve fixedly connected between the two outer tube structures and an aluminum sheet adapter nested and connected between the two sheet placement structures.

[0013] Optionally, the sleeve is formed by hinging two semi-cylindrical columns with the same structure. Extension rings are fixedly connected to both ends of the sleeve. Connection snap rings are fixedly connected to positions on the inner wall of the extension ring corresponding to the connection card slots. The inner diameter of the inner circle of the sleeve is the same as the outer diameter of the aluminum sheet adapter.

[0014] Optionally, the aluminum sheet adapter is a cylindrical structure with a through square groove in the center. A retaining piece groove adapted to the limit stop block is provided at a position corresponding to the aluminum sheet adapter. Four fastening holes that are perpendicular to each other and penetrate are provided on the aluminum sheet adapter. Fixed sheet units are fixedly connected to the four inner surfaces of the square groove. A movable sheet unit is correspondingly installed on each fixed sheet unit. The fixed sheet units and the movable sheet units are both of integral structure.

[0015] Optionally, the fixed sheet unit is composed of a first insulating sheet and a first conductive sheet that are fixedly connected to each other. One side of the first insulating sheet is fixedly connected to the inner surface of the square groove. The first insulating sheet is fixedly connected to one side of the first conductive sheet. The first insulating sheet and the first conductive sheet are both provided with through holes communicating with the fastening holes. The movable sheet unit is composed of a second insulating sheet and a second conductive sheet that are fixedly connected to each other. The second insulating sheet and the second conductive sheet are fixedly connected to each other, and the second conductive sheet faces the first conductive sheet. A fastening bolt is rotatably connected to positions corresponding to the fastening holes on the second insulating sheet and the second conductive sheet. The position of the movable sheet unit is adjusted in the fastening holes through the fastening bolt.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above solution, by setting the sheet placement structure and the outer tube structure, the sheet placement structure is used for quickly installing the phase A aluminum sheet, phase B aluminum sheet, phase C aluminum sheet, grounding aluminum sheet and phase N aluminum sheet, reducing the installation process and increasing the installation efficiency. At the same time, heat generated during its operation is dissipated. The outer tube structure is adapted to the sheet placement structure. Through the outer tube structure, quick positioning and limiting of the sheet placement structure during assembly can be achieved, reducing the assembly time.

[0018] By setting the outer tube connection structure, the two outer tube structures are connected through the outer tube connection structure. Only by adjusting the positions of the outer tube structures can the connection be carried out. Quick positioning and fixing with the outer tube structure are achieved through the retaining piece groove on the aluminum sheet adapter, and no secondary positioning is required during installation.

[0019] By setting a pressing piece, the pressing piece is used to adjust the thickness inside the second square groove, so that when the C-phase aluminum sheet is installed, it is squeezed and fitted with the pressing piece to reduce the thickness inside the groove, and then the second rotating plate is used to squeeze the C-phase aluminum sheet, making the C-phase aluminum sheet more stable after installation and preventing position deviation.

[0020] By setting a clamping unit, the clamping unit changes the fixing method between the two first rotating plates and the two second rotating plates, eliminating the need for additional fixing methods such as screws. The fixing method is simple to operate, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0022] Figure 1 It is a schematic three-dimensional structure diagram for the connection between tubular bus ducts;

[0023] Figure 2 It is a schematic three-dimensional structure diagram of a tubular bus duct;

[0024] Figure 3 It is a schematic exploded three-dimensional structure diagram of a tubular bus duct;

[0025] Figure 4 It is Figure 3 A schematic three-dimensional structure diagram at position A in

[0026] Figure 5 It is a schematic three-dimensional structure diagram of the sheet placement structure in the first state;

[0027] Figure 6 It is a schematic three-dimensional structure diagram of the sheet placement structure in the second state;

[0028] Figure 7 It is a schematic three-dimensional assembly structure diagram of the sheet placement structure with A-phase aluminum sheet, B-phase aluminum sheet, C-phase aluminum sheet, grounding aluminum sheet and N-phase aluminum sheet;

[0029] Figure 8 It is a schematic three-dimensional structure diagram of the first sheet placement unit in the first state;

[0030] Figure 9 It is a schematic three-dimensional structure diagram of the first sheet placement unit in the second state;

[0031] Figure 10 It is a schematic three-dimensional structure diagram of the first sheet placement unit in the third state;

[0032] Figure 11 It is a schematic sectional three-dimensional structure diagram of the first sheet placement unit in the third state;

[0033] Figure 12Schematic exploded three-dimensional structure of the first base and the pressing piece;

[0034] Figure 13 is Figure 12 Schematic three-dimensional structure of part B in

[0035] Figure 14 Schematic three-dimensional structure of the second chip placement unit;

[0036] Figure 15 Schematic assembled three-dimensional structure of the outer tube connection structure and the outer tube structure;

[0037] Figure 16 Schematic partially cut-away three-dimensional structure of the assembly of the outer tube connection structure and the outer tube structure;

[0038] Figure 17 Schematic exploded three-dimensional structure of the outer tube connection structure;

[0039] Figure 18 Schematic cut-away three-dimensional structure of the aluminum sheet sleeve.

[0040] Reference numerals:

[0041] 1. Outer tube structure; 11. First outer shell; 12. Second outer shell; 121. Docking groove; 13. Connection card slot; 14. Limit stop; 15. Chip placement card slot; 16. Annular groove; 2. Outer tube connection structure; 21. Sleeve; 211. Extension ring; 212. Connection snap ring; 22. Aluminum sheet sleeve; 221. Flap groove; 222. Fastening hole; 23. Fixed chip unit; 231. First insulating sheet; 232. First conducting sheet; 24. Moving chip unit; 241. Second insulating sheet; 242. Second conducting sheet; 25. Fastening bolt; 3. Side ring; 4. Chip placement structure; 41. First chip placement unit; 411. C-phase slot; 412. Grounding slot; 413. First base; 4131. Extension slot; 414. First rotating plate; 415. Second rotating plate; 4151. Heat dissipation slot; 4152. Fastening block; 4153. Fastening card slot; 416. Pressing piece; 4161. Pressing piece slider; 42. Second chip placement unit; 421. B-phase slot; 422. Second base; 43. Third chip placement unit; 431. A-phase slot; 44. Fourth chip placement unit; 441. N-phase slot; 45. Restricting strip; 5. A-phase aluminum sheet; 6. B-phase aluminum sheet; 7. C-phase aluminum sheet; 8. Grounding aluminum sheet; 9. N-phase aluminum sheet.

[0042] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0043] The following will describe in detail a tubular busbar with a connection structure provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0044] It should be noted that in the specification, references to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such a feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0045] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather, at least in part depending on the context, can allow for the existence of other factors that may not be explicitly described.

[0046] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but can also include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0047] In addition, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the accompanying drawings. Spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0048] As Figures 1 to 18As shown in the figure, an embodiment of the present invention provides a tubular busbar with a connection structure, including an outer tube structure 1. The outer tube structure 1 is a housing for protecting the internal chip structure 4. The outer tube structure 1 includes a first housing 11 and a second housing 12 that are fixedly connected to form a tube. When the first housing 11 and the second housing 12 are installed, they are attached to each other to form a tube. The first housing 11 and the second housing 12 are provided to facilitate the placement of the chip structure 4 when assembling the busbar; a chip structure 4 is located between the first housing 11 and the second housing 12 and is connected to the first housing 11 and the second housing 12. An A-phase aluminum sheet 5, a B-phase aluminum sheet 6, a C-phase aluminum sheet 7, a grounding aluminum sheet 8, and an N-phase aluminum sheet 9 are fixedly connected to the chip structure 4. The structures and specifications of the A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7, grounding aluminum sheet 8, and N-phase aluminum sheet 9 are the same. The chip structure 4 is used for quickly installing the A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7, grounding aluminum sheet 8, and N-phase aluminum sheet 9, reducing the installation process, increasing the installation efficiency, and dissipating the heat generated during their operation; an outer tube connection structure 2 is located between two outer tube structures 1 and is used to connect the two outer tube structures 1, increasing the connection stability, and at the same time connecting the A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7, grounding aluminum sheet 8, and N-phase aluminum sheet 9 on the chip structure 4 to each other.

[0049] During manufacturing and installation, the second housing 12 is fixed by a fixture, and then the chip structure 4 assembled with the A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7, grounding aluminum sheet 8, and N-phase aluminum sheet 9 is placed on the second housing 12, and then the first housing 11 is adaptively fixed to the second housing 12, thereby limiting and fixing the entire chip structure 4; when installing the tubular busbar, after the first outer tube structure 1 is fixedly installed, the outer tube connection structure 2 is fixed to one end of the first outer tube structure 1, and then the outer tube connection structure 2 is fixed. After the outer tube connection structure 2 is fixed, the second outer tube structure 1 is installed on the outer tube connection structure 2, thereby completing the connection of the two outer tube structures 1. Repeat the above steps in sequence until all the outer tube structures 1 are installed.

[0050] Such as Figures 1 to 5As shown in the figure, both the first housing 11 and the second housing 12 are semi-circular ring structures with the same specifications. The inner walls of the first housing 11 and the second housing 12 are each provided with three groups of corresponding fitting grooves, and each group of fitting grooves is composed of four chip placement slots 15 that are 45° to each other; both side surfaces of the second housing 12 connected to the first housing 11 are provided with docking grooves 121, and at positions corresponding to the docking grooves 121 on the first housing 11, there are fixedly connected corresponding docking protrusions. The docking grooves 121 and the docking protrusions are used to guide and limit the second housing 12 and the first housing 11, preventing the problem that when installing the first housing 11 and the second housing 12, the staff needs to gradually adjust and align, resulting in troublesome installation work; at corresponding positions on the opposite side surfaces of the two ends of the first housing 11 and the second housing 12, there are provided annular grooves 16. The two annular grooves 16 opened on the same side of the first housing 11 and the second housing 12 are connected to each other to form an annular shape, and their inner walls are provided with internal threads. A side ring 3 is fixedly connected in the annular groove 16, and the inner surface wall of the side ring 3 is provided with external threads adapted to the internal threads. At both ends of the first housing 11 and the second housing 12, there are fixedly connected symmetrically arranged limit blocks 14, and the limit blocks 14 are of a convex-shaped structure; at corresponding positions on the outer surface walls of the two ends of the first housing 11 and the second housing 12, there are provided connection card slots 13, and the two connection card slots 13 opened on the same side of the first housing 11 and the second housing 12 are connected to each other to form an annular shape.

[0051] When fixing the first housing 11 and the second housing 12, first fix the second housing 12 by means of a fixture or the like, then insert the docking protrusion on the first housing 11 into the docking groove 121 to limit the relative position between the first housing 11 and the second housing 12. Slide and adjust the first housing 11 on the docking groove 121 to align the two ends of the first housing 11 and the second housing 12. After the two ends are aligned, screw the two side rings 3 into the annular grooves 16 on both sides of the ring to fix the two ends of the first housing 11 and the second housing 12. After the fixing is completed, since threaded holes are provided at the relative positions where the docking protrusions are aligned with the docking grooves 121, the two sides of the first housing 11 and the second housing 12 can be fixed by screws.

[0052] As Figure 2 、 Figure 6 and Figure 7As shown, the chip placing structure 4 includes a first chip placing unit 41, a second chip placing unit 42, a third chip placing unit 43, and a fourth chip placing unit 44 that are clamped to the inner walls of the first housing 11 and the second housing 12 and are connected end to end in sequence to form a cylindrical shape. The first chip placing unit 41, the second chip placing unit 42, the third chip placing unit 43, and the fourth chip placing unit 44 surround each other to form a hollow cylindrical structure. The diameter of this cylindrical structure is the same as the inner wall diameters of the first housing 11 and the second housing 12. Therefore, when the first chip placing unit 41, the second chip placing unit 42, the third chip placing unit 43, and the fourth chip placing unit 44 are wound together, they can just be placed between the first housing 11 and the second housing 12, and are limited by the inner walls of the first housing 11 and the second housing 12 so that they will not become loose. At the same time, the limiting strips 45 on the outer surfaces of the first chip placing unit 41, the second chip placing unit 42, the third chip placing unit 43, and the fourth chip placing unit 44 are respectively clamped and limited by the chip placing slots 15 on the inner walls of the first housing 11 and the second housing 12, so that they will not rotate or slide inside the first housing 11 and the second housing 12, avoiding the situation of position deviation. The outer shapes of the first chip placing unit 41, the second chip placing unit 42, the third chip placing unit 43, and the fourth chip placing unit 44 are all the same sector-shaped columns, and limiting strips 45 are fixedly connected to the positions corresponding to the chip placing slots 15 on the outer surfaces of the first chip placing unit 41, the second chip placing unit 42, the third chip placing unit 43, and the fourth chip placing unit 44.

[0053] As Figures 6 to 11 and Figure 14As shown, the first chip placing unit 41 includes a first base 413 clamped to the inner wall of the second housing 12. At the edge positions in the same direction of the first base 413 and the second base 422, there are fixed connection rotating blocks. Both ends of the rotating blocks are fixedly connected with rotating shafts. At the positions corresponding to the rotating blocks on the second base 422, there are rotating grooves opened. At both ends of the rotating grooves, there are rotating holes opened. Between the first base 413 and the second base 422, they are rotationally connected through the cooperation of the rotating shafts on the rotating blocks and the rotating holes in the rotating grooves. Through this connection method, the mutual rotational connection among the first chip placing unit 41, the second chip placing unit 42, the third chip placing unit 43, and the fourth chip placing unit 44 is realized. On the top of the first base 413, there is a first square groove opened. At both ends of the top of the first base 413, there are two symmetrically arranged first rotating plates 414 rotationally connected. When the two first rotating plates 414 are in the initial position, their bottoms are parallel to the bottom of the first square groove, and a grounding groove 412 is formed between them and the first square groove. A grounding aluminum sheet 8 is installed in the grounding groove 412. When installing the grounding aluminum sheet 8, the two second rotating plates 415 and the two first rotating plates 414 are rotated and unfolded to expose the first square groove. Then, the grounding aluminum sheet 8 is snapped into the first square groove. After the position adjustment of the grounding aluminum sheet 8 is completed, the two first rotating plates 414 are rotated until the two first rotating plates 414 rotate to the initial position. While rotating the two first rotating plates 414, the two first rotating plates 414 are limited and fixed through the clamping unit. Then, the bottoms of the two first rotating plates 414 press against the grounding aluminum sheet 8, and the grounding aluminum sheet 8 is fixed in cooperation with the elastic unit.

[0054] On the tops of both of the two first rotating plates 414, there are second square grooves opened and communicated with each other. The specifications of the second square grooves and the first square groove are the same. At the outer edge positions of the two first rotating plates 414, there are two symmetrically arranged second rotating plates 415 rotationally connected. When the two second rotating plates 415 are in the initial position, their bottoms are parallel to the bottom of the second square groove, and a C-phase groove 411 is formed between them and the second square groove. A C-phase aluminum sheet 7 is installed in the C-phase groove 411. The principle of installing the C-phase aluminum sheet 7 is the same as that of installing the grounding aluminum sheet 8. The two second rotating plates 415 are rotated and unfolded to expose the second square groove. Then, the C-phase aluminum sheet 7 is snapped into the second square groove. Then, by rotating the two second rotating plates 415, the bottoms of the two second rotating plates 415 press against the C-phase aluminum sheet 7, and the C-phase aluminum sheet 7 is fixed in cooperation with the elastic unit.

[0055] A plurality of evenly arranged heat dissipation grooves 4151 are formed in the top of the second rotating plate 415. The heat dissipation grooves 4151 are used to dissipate the heat generated during the operation of the C-phase aluminum sheet 7. The second sheet placing unit 42 includes a second base 422 clamped between the first housing 11 and the second housing 12. A third-party groove is formed in the top of the second base 422. Both sides of the top of the second base 422 are rotatably connected to the second rotating plate 415. A B-phase groove 421 is formed between the two second rotating plates 415 and the third-party groove. A B-phase aluminum sheet 6 is installed in the B-phase groove 421. When installing the B-phase aluminum sheet 6, the two second rotating plates 415 on the second base 422 are rotated and unfolded to expose the third-party groove. Then, the B-phase aluminum sheet 6 is snapped into the third-party groove. Then, by rotating the two second rotating plates 415, the B-phase aluminum sheet 6 is pressed against by the bottoms of the two second rotating plates 415, and the B-phase aluminum sheet 6 is fixed in cooperation with the elastic unit.

[0056] The outer shape of the second base 422 is the same as the shape of the first base 413 and the two first rotating plates 414 in the initial position. The shapes and structures of the second sheet placing unit 42, the third sheet placing unit 43, and the fourth sheet placing unit 44 are the same. An A-phase groove 431 and an N-phase groove 441 are respectively provided on the third sheet placing unit 43 and the fourth sheet placing unit 44. An A-phase aluminum sheet 5 is installed in the A-phase groove 431, and an N-phase aluminum sheet 9 is installed in the N-phase groove 441. The installation principles of the A-phase aluminum sheet 5 and the N-phase aluminum sheet 9 are the same as the installation principle of the B-phase aluminum sheet 6; it also includes an elastic unit for respectively pressing and limiting the A-phase aluminum sheet 5, the B-phase aluminum sheet 6, the C-phase aluminum sheet 7, the grounding aluminum sheet 8, and the N-phase aluminum sheet 9, and a clamping unit for respectively clamping the two first rotating plates 414 and the two second rotating plates 415. The elastic unit is used to adjust the thickness inside the first-party groove, the second-party groove, and the third-party groove, so that when the A-phase aluminum sheet 5, the B-phase aluminum sheet 6, the C-phase aluminum sheet 7, the grounding aluminum sheet 8, and the N-phase aluminum sheet 9 are installed, they are pressed and fitted with the elastic unit, making the installation of the A-phase aluminum sheet 5, the B-phase aluminum sheet 6, the C-phase aluminum sheet 7, the grounding aluminum sheet 8, and the N-phase aluminum sheet 9 more stable. The clamping unit is used to clamp the two rotating first rotating plates 414 and the two second rotating plates 415 to each other for fixation, without the need for additional fixing methods such as screws. The fixing method is simple to operate, time-saving, and labor-saving.

[0057] Such as Figures 8 to 11As shown, the elastic unit includes extension grooves 4131 respectively opened at the bottoms of the first square groove, the second square groove, and the third square groove. Extrusion chutes are opened at both ends of the bottom of the extension groove 4131. A pressing piece 416 is provided at the top of the extension groove 4131. Four symmetrically arranged pressing piece sliders 4161 are fixedly connected to the bottom of the pressing piece 416. The pressing piece 416 is slidably connected in the extrusion chute through the pressing piece sliders 4161. The pressing piece sliders 4161 are of an L-shaped structure. The thickness of the pressing piece 416 gradually changes from thick to thin from the middle to both sides. When the top of the pressing piece 416 is squeezed, the pressing piece 416 will be compressed towards the bottoms of the corresponding first square groove, second square groove, and third square groove. During compression, the pressing piece sliders 4161 on both sides will slide along the extrusion chute until the entire pressing piece 416 fits against the bottoms of the corresponding first square groove, second square groove, and third square groove.

[0058] As Figure 11 and Figure 12 As shown, the clamping unit includes a fastening block 4152 fixedly connected to one side of one of the second rotating plates 415. A fastening slot 4153 is opened at the position corresponding to the fastening block 4152 on the other second rotating plate 415. The two second rotating plates 415 are fixedly clamped to each other through the fastening block 4152 and the fastening slot 4153. An inner groove is opened at the top of the open end of the fastening slot 4153. The setting of the inner groove enables the fastening block 4152 not to be restricted by the open end of the fastening slot 4153 when it starts to contact the fastening slot 4153, and the fastening block 4152 can be inserted into the fastening slot 4153. When the two second rotating plates 415 rotate, they will approach each other. During the approaching process, the fastening block 4152 will gradually contact the fastening slot 4153 and first contact the inner groove at the top of the fastening slot 4153. As the rotation angle increases, until the entire fastening block 4152 is snapped into the fastening slot 4153, thereby fixing the two second rotating plates 415 together.

[0059] As Figures 15 to 18As shown, the outer tube connection structure 2 includes a sleeve 21 fixedly connected between two outer tube structures 1 and an aluminum sheet sleeve 22 nested and connected between two chip placement structures 4. The sleeve 21 is installed between the two outer tube structures 1 for protecting the aluminum sheet sleeve 22. The aluminum sheet sleeve 22 is used to connect the chip placement structures 4 inside the two outer tube structures 1. The sleeve 21 is formed by hinging two semi-cylindrical columns with the same structure. At both ends of the sleeve 21, extension rings 211 are fixedly connected. At positions corresponding to the connection card slots 13 on the inner wall of the extension rings 211, connection rings 212 are fixedly connected. The inner diameter of the inner circle of the sleeve 21 is the same as the outer diameter of the aluminum sheet sleeve 22. The aluminum sheet sleeve 22 is a cylindrical structure with a through square groove opened at the center. At positions corresponding to the limit stop blocks 14 on the aluminum sheet sleeve 22, retaining plate grooves 221 adapted to them are opened. The depth of one of the retaining plate grooves 221 is greater than that of the other retaining plate groove 221. The depth of the deeper retaining plate groove 221 is the sum of the thicknesses of the grounding aluminum sheet 8 and the limit stop block 14. Four fastening holes 222 that are 90° to each other and penetrate are opened on the aluminum sheet sleeve 22. Fixed plate units 23 are fixedly connected to the four inner surfaces of the square groove. Moving plate units 24 are correspondingly installed on each fixed plate unit 23. The fixed plate units 23 and the moving plate units 24 are both integral structures.

[0060] When connecting two outer tube structures 1, first install one outer tube structure 1 with the chip placement structure 4 fixed. The two retaining piece grooves 221 of the aluminum sheet sleeve 22 are respectively aligned with the limiting retaining blocks 14 on the first housing 11 and the second housing 12. Since the limiting retaining block 14 is of a convex-shaped structure, the protrusions on both sides of the limiting retaining block 14 will press against the aluminum sheet sleeve 22. At the same time, the two limiting retaining blocks 14 limit the position of the aluminum sheet sleeve 22. When the aluminum sheet sleeve 22 is installed, the phase A aluminum sheet 5, phase B aluminum sheet 6, phase C aluminum sheet 7, and phase N aluminum sheet 9 installed on the chip placement structure 4 are respectively clamped between the corresponding fixed piece units 23 and moving piece units 24, and the grounding aluminum sheet 8 is inserted into the deeper retaining piece groove 221 and fits with the limiting retaining block 14 and the retaining piece groove 221. After the aluminum sheet sleeve 22 is installed, insert another outer tube structure 1 on the aluminum sheet sleeve 22. The limiting retaining block 14 on the other outer tube structure 1 is inserted into the retaining piece groove 221 for limiting. At the same time, the phase A aluminum sheet 5, phase B aluminum sheet 6, phase C aluminum sheet 7, and phase N aluminum sheet 9 inside it are also respectively clamped between the corresponding fixed piece units 23 and moving piece units 24. Then adjust the moving piece unit 24 so that the moving piece unit 24 and the fixed piece unit 23 clamp the phase A aluminum sheet 5, phase B aluminum sheet 6, phase C aluminum sheet 7, and phase N aluminum sheet 9 between them. The grounding aluminum sheet 8 is inserted into the retaining piece groove 221 and fits with the limiting retaining block 14 to ground the outer tube structure 1 and prevent electric shock during maintenance. When the aluminum sheet sleeve 22 connects the phase A aluminum sheet 5, phase B aluminum sheet 6, phase C aluminum sheet 7, and phase N aluminum sheet 9 in the two chip placement structures 4, sleeved the sleeve 21 on the outer wall of the aluminum sheet sleeve 22. When the sleeve 21 is sleeved, the connecting snap rings 212 on the two extension rings 211 are correspondingly snapped into the annular grooves 16 on the first housing 11 and the second housing 12, and then fix the sleeve 21, and then complete the installation of the sleeve 21.

[0061] Such as Figure 17 And Figure 18As shown in the figure, the fixed piece unit 23 is composed of a first insulating piece 231 and a first conducting piece 232 which are fixedly connected to each other. One side of the first insulating piece 231 is fixedly connected to the inner surface of the square groove. One side of the first insulating piece 231 is fixedly connected to the first conducting piece 232. Both the first insulating piece 231 and the first conducting piece 232 are provided with through holes communicating with the fastening holes 222. The moving piece unit 24 is composed of a second insulating piece 241 and a second conducting piece 242 which are fixedly connected to each other. The second insulating piece 241 and the second conducting piece 242 are fixedly connected to each other, and the second conducting piece 242 is opposite to the first conducting piece 232. At the positions corresponding to the fastening holes 222, the second insulating piece 241 and the second conducting piece 242 are rotationally connected with fastening bolts 25. The second insulating piece 241 and the first insulating piece 231 are made of insulating materials, and the second conducting piece 242 and the first conducting piece 232 are made of conducting materials. An annular groove is provided at one end of the fastening bolt 25 close to the moving piece unit 24. The moving piece unit 24 is sleeved in the annular groove. Therefore, the fastening bolt 25 can rotate on the second insulating piece 241 and the second conducting piece 242. The position of the moving piece unit 24 is adjusted in the fastening holes 222 through the fastening bolts 25. Among them, the fastening holes 222 are fastening threaded holes adapted to the fastening bolts 25. When it is necessary to adjust the moving piece unit 24 to be close to the fixed piece unit 23, the fastening bolts 25 are rotated in the fastening holes 222 through tools, so that the fastening bolts 25 drive the second insulating piece 241 and the second conducting piece 242 thereon to displace along with the fastening bolts 25, thereby adjusting the distance between the second insulating piece 241 and the second conducting piece 242 and the first insulating piece 231 and the first conducting piece 232, and then clamping the phase A aluminum sheet 5, phase B aluminum sheet 6, phase C aluminum sheet 7 and phase N aluminum sheet 9 respectively clamped between the two.

[0062] The working principle of the technical solution provided by the present invention is as follows: During manufacturing and installation, first, the phase A aluminum sheet 5, phase B aluminum sheet 6, phase C aluminum sheet 7, grounding aluminum sheet 8 and phase N aluminum sheet 9 are installed on the sheet placing structure 4. During installation, first, the first sheet placing unit 41, second sheet placing unit 42, third sheet placing unit 43 and fourth sheet placing unit 44 are unfolded and laid flat on the workbench, and then the grounding aluminum sheet 8, phase C aluminum sheet 7, phase B aluminum sheet 6, phase A aluminum sheet 5 and phase N aluminum sheet 9 are installed in sequence.

[0063] When installing the grounding aluminum sheet 8, rotate and unfold the two second rotating plates 415 and the two first rotating plates 414 so that the first square groove is exposed. Then, snap the grounding aluminum sheet 8 onto the pressing piece 416 in the first square groove. After the position of the grounding aluminum sheet 8 is adjusted, rotate the two first rotating plates 414 until the two first rotating plates 414 return to their initial positions. During the rotation of the two second rotating plates 415, they will approach each other. During the approaching process, the fastening block 4152 will gradually come into contact with the fastening slot 4153, first contacting the inner groove at the top of the fastening slot 4153. As the rotation angle increases, until the entire fastening block 4152 is snapped into the fastening slot 4153, thereby fixing the two second rotating plates 415. Subsequently, the bottoms of the two first rotating plates 414 will press against the grounding aluminum sheet 8. During this process, the top of the pressing piece 416 is squeezed by the grounding aluminum sheet 8, and the pressing piece 416 will compress towards the bottom of the first square groove. When compressing, it will drive the pressing piece sliders 4161 on both sides to slide along the extrusion chute until the entire pressing piece 416 fits the surfaces of the first square groove and the grounding aluminum sheet 8, thereby limiting and fixing the grounding aluminum sheet 8 in the grounding groove 412.

[0064] When installing the C-phase aluminum sheet 7, its installation principle is the same as that of installing the grounding aluminum sheet 8. Rotate and unfold the two second rotating plates 415 to expose the second square groove. Then, snap the C-phase aluminum sheet 7 into the second square groove. Then, by rotating the two second rotating plates 415, the bottoms of the two second rotating plates 415 will press against the C-phase aluminum sheet 7, and cooperate with the elastic unit to fix the C-phase aluminum sheet 7. When installing the B-phase aluminum sheet 6, rotate and unfold the two second rotating plates 415 on the second base 422 to expose the third square groove. Then, snap the B-phase aluminum sheet 6 into the third square groove. Then, by rotating the two second rotating plates 415, the bottoms of the two second rotating plates 415 will press against the B-phase aluminum sheet 6, and cooperate with the elastic unit to fix the B-phase aluminum sheet 6. When installing the A-phase aluminum sheet 5 and the N-phase aluminum sheet 9, the principle is the same as the operation method of installing the B-phase aluminum sheet 6.

[0065] After the sheet placing structure 4 is installed, first fix the second outer shell 12 with a fixture, and then rotate the first sheet placing unit 41, the second sheet placing unit 42, the third sheet placing unit 43, and the fourth sheet placing unit 44 again so that they fit together into a cylindrical shape. Then, place the cylindrical first sheet placing unit 41, second sheet placing unit 42, third sheet placing unit 43, and fourth sheet placing unit 44 onto the second outer shell 12. When placing, the limiting strips 45 on their outer walls are correspondingly placed into the sheet placing slots 15 on the inner wall of the second outer shell 12. The sheet placing structure 4 is limited on the second outer shell 12 through the limiting strips 45 and the sheet placing slots 15, and there will be no position deviation.

[0066] Next, install the first shell 11 on the second shell 12, align the docking protrusion on the first shell 11 with the docking groove 121 and insert it to define the relative position between the first shell 11 and the second shell 12, slide and adjust the first shell 11 on the docking groove 121 to align the two ends of the first shell 11 and the second shell 12. After the two ends are aligned, screw the two side rings 3 into the annular grooves 16 on both sides of the rings to fix the two ends of the first shell 11 and the second shell 12. After the fixation is completed, since the docking protrusion is aligned with the docking groove 121 relative position and has threaded holes, the first shell 11 and the second shell 12 are fixed on both sides by screws.

[0067] During on-site installation, multiple outer tube structures 1 are required. Two adjacent outer tube structures 1 are connected through the outer tube connecting structure 2. When connecting two outer tube structures 1, an outer tube structure 1 with a fixed sheet structure 4 is first installed. The two stopper grooves 221 of the aluminum sheet connector 22 are respectively aligned with the limit stoppers 14 on the first shell 11 and the second shell 12. Since the limit stopper 14 is a convex structure, the protrusions on both sides of the limit stopper 14 will hold the aluminum sheet connector 22. At the same time, The two limit blocks 14 limit the position of the aluminum sheet connector 22. When the aluminum sheet connector 22 is installed, the A-phase aluminum sheet 5, the B-phase aluminum sheet 6, the C-phase aluminum sheet 7 and the N-phase aluminum sheet 9 installed on the sheet placement structure 4 are respectively inserted between the corresponding fixed sheet unit 23 and the movable sheet unit 24, and the grounding aluminum sheet 8 is inserted into the deeper baffle groove 221 and fits with the limit block 14 and the baffle groove 221. When the aluminum sheet connector 22 is installed, another outer tube structure 1 is inserted into the aluminum sheet connector 22, and the other outer tube The limit stopper 14 on the structure 1 is inserted into the stopper groove 221 for limiting, and at the same time, the A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7 and N-phase aluminum sheet 9 inside it are also respectively inserted between the corresponding fixed sheet unit 23 and the movable sheet unit 24, and then the movable sheet unit 24 is adjusted so that the movable sheet unit 24 and the fixed sheet unit 23 clamp the A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7 and N-phase aluminum sheet 9 therebetween, and the grounding aluminum sheet 8 is inserted into the stopper groove 221 and fits with the limit stopper 14 It is used to ground the outer tube structure 1 to prevent electric shock during maintenance. After the aluminum sheet connector 22 connects the A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7 and N-phase aluminum sheet 9 in the two sheet structures 4, the sleeve 21 is sleeved on the outer wall of the aluminum sheet connector 22. When the sleeve 21 is sleeved, the connecting clamps 212 on the extension rings 211 on both sides are correspondingly inserted into the annular grooves 16 on the first shell 11 and the second shell 12, and then the sleeve 21 is fixed, and then the installation of the sleeve 21 is completed.

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tubular bus duct with a connection structure, characterized in that: The outer tube structure (1) comprises a first outer shell (11) and a second outer shell (12) fixed to each other in a tubular shape; a sheet placement structure (4), the sheet placement structure (4) being located between the first housing (11) and the second housing (12), and being connected to the first housing (11) and the second housing (12), the sheet placement structure (4) being fixedly connected with an A-phase aluminum sheet (5), a B-phase aluminum sheet (6), a C-phase aluminum sheet (7), a grounding aluminum sheet (8), and an N-phase aluminum sheet (9); The sheet placement structure (4) comprises a first sheet placement unit (41), a second sheet placement unit (42), a third sheet placement unit (43) and a fourth sheet placement unit (44) which are clamped to the inner walls of the first shell (11) and the second shell (12) and connected end to end in sequence to form a cylindrical shape, wherein the first sheet placement unit (41), the second sheet placement unit (42), the third sheet placement unit (43) and the fourth sheet placement unit (44) are all in the same fan-shaped columnar shape; The first sheet placement unit (41) comprises a first base (413) which is snap-connected to the inner surface wall of the second housing (12); a first square groove is provided on the top of the first base (413); two first rotating plates (414) are rotatably connected to the two ends of the top of the first base (413); when the two first rotating plates (414) are in an initial position, their bottoms are parallel to the bottom of the first square groove, and a grounding groove (412) is formed between the two first rotating plates (414); a second square groove which is connected to each other is provided on the top of the two first rotating plates (414); the second square groove has the same specifications as the first square groove; two symmetrical second rotating plates (415) are rotatably connected to the outer edges of the two first rotating plates (414); when the two second rotating plates (415) are in an initial position, their bottoms are parallel to the bottom of the second square groove, and a C-phase groove (411) is formed between the two second square grooves; a plurality of evenly arranged heat dissipation grooves (4151) are provided on the top of the second rotating plates (415); The outer tube connection structure (2) is located between the two outer tube structures (1) and is used to connect the two outer tube structures (1).

2. The tubular bus duct with a connection structure according to claim 1, characterized in that: The first housing (11) and the second housing (12) are both semi-circular ring structures with the same specifications, and the inner walls of the first housing (11) and the second housing (12) are each provided with three groups of corresponding matching grooves, each group of matching grooves being composed of four film placement slots (15) that are mutually angled at 45 degrees; Both side surfaces of the second housing (12) connected to the first housing (11) are provided with docking grooves (121), and the first housing (11) is fixedly connected with matching docking protrusions at positions corresponding to the docking grooves (121); Annular grooves (16) are provided at corresponding positions on the side surfaces of both ends of the first shell (11) and the second shell (12), a side ring (3) is fixedly connected in the annular groove (16), and mutually symmetrical limit blocks (14) are fixedly connected at both ends of the first shell (11) and the second shell (12), and the limit blocks (14) are of a convex structure; Connecting slots (13) are provided at corresponding positions on the outer walls of both ends of the first shell (11) and the second shell (12).

3. The tubular bus duct with a connection structure according to claim 2, characterized in that: The A-phase aluminum sheet (5), the B-phase aluminum sheet (6), the C-phase aluminum sheet (7), the grounding aluminum sheet (8) and the N-phase aluminum sheet (9) have the same structure and specifications; the outer walls of the first sheet placement unit (41), the second sheet placement unit (42), the third sheet placement unit (43) and the fourth sheet placement unit (44) are all fixedly connected with limiting strips (45) at positions corresponding to the sheet placement slots (15).

4. The tubular bus duct with a connection structure according to claim 3, characterized in that: The second sheet placement unit (42) comprises a second base (422) clamped between the first shell (11) and the second shell (12); a third groove is provided on the top of the second base (422); both sides of the top of the second base (422) are rotatably connected to the second rotating plate (415); a B-phase groove (421) is formed between the two second rotating plates (415) and the third-party groove; the outer shape of the second base (422) is consistent with the shape of the first base (413) and the two first rotating plates (414) when they are in an initial position; the second sheet placement unit (42), the third sheet placement unit (43) and the fourth sheet placement unit (44) are consistent in shape and structure; the third sheet placement unit (43) and the fourth sheet placement unit (44) are respectively provided with an A-phase groove (431) and an N-phase groove (441); A C-phase aluminum sheet (7) is installed in the C-phase slot (411), a grounding aluminum sheet (8) is installed in the grounding slot (412), a B-phase aluminum sheet (6) is installed in the B-phase slot (421), an A-phase aluminum sheet (5) is installed in the A-phase slot (431), and an N-phase aluminum sheet (9) is installed in the N-phase slot (441); It also includes an elastic unit for respectively squeezing and limiting the A-phase aluminum sheet (5), the B-phase aluminum sheet (6), the C-phase aluminum sheet (7), the grounding aluminum sheet (8) and the N-phase aluminum sheet (9), and a clamping unit for respectively clamping the two first rotating plates (414) and the two second rotating plates (415).

5. The tubular bus duct with a connection structure according to claim 4, characterized in that: The elastic unit comprises an extension groove (4131) respectively opened at the bottom of the first square groove, the second square groove and the third square groove, the bottom ends of the extension groove (4131) are provided with extrusion slide grooves, the top of the extension groove (4131) is provided with a pressing sheet (416), the bottom of the pressing sheet (416) is fixedly connected with four mutually symmetrical pressing sheet sliders (4161), the pressing sheet (416) is slidably connected in the extrusion slide groove through the pressing sheet slider (4161), the pressing sheet slider (4161) is an L-shaped structure, and the thickness of the pressing sheet (416) gradually changes from thick to thin from the middle to both sides.

6. The tubular bus duct with a connection structure according to claim 4, characterized in that: The clamping unit comprises a fastening block (4152) fixedly connected to one side of one of the second rotating plates (415); a fastening slot (4153) is provided at a position of the other second rotating plate (415) corresponding to the fastening block (4152); the two second rotating plates (415) are clamped and fixed to each other via the fastening block (4152) and the fastening slot (4153); and an inner groove is provided at the top of the open end of the fastening slot (4153).

7. The tubular bus duct with a connection structure according to claim 2, characterized in that: The outer tube connection structure (2) comprises a sleeve (21) fixedly connected between the two outer tube structures (1) and an aluminum sheet connection sleeve (22) nested and connected between the two sheet placement structures (4).

8. The tubular bus duct with a connection structure according to claim 7, characterized in that: The sleeve (21) is formed by two semi-ring columns of identical structure hinged to each other, and both ends of the sleeve (21) are fixedly connected to extension rings (211), and a connecting clamping ring (212) is fixedly connected to the inner wall of the extension ring (211) at a position corresponding to the connecting clamping groove (13), and the inner ring diameter of the sleeve (21) is consistent with the outer ring diameter of the aluminum sheet connecting sleeve (22).

9. The tubular bus duct with a connection structure according to claim 7, characterized in that: The aluminum sheet connector (22) is a cylindrical structure with a square groove extending through the center thereof; a stopper groove (221) matching the stopper groove (221) is provided at a position corresponding to the limit stopper (14); four fastening holes (222) extending through the aluminum sheet connector (22) are provided at 90° angles to each other; four inner surfaces of the square groove are fixedly connected to fixed sheet units (23); each fixed sheet unit (23) is correspondingly mounted with a moving sheet unit (24); and the fixed sheet units (23) and the moving sheet units (24) are both integral structures.

10. The tubular bus duct with a connection structure according to claim 9, characterized in that: The fixed sheet unit (23) is composed of a first insulating sheet (231) and a first guide sheet (232) fixed to each other, one side of the first insulating sheet (231) is fixedly connected to the inner surface of the square groove, the first insulating sheet (231) is fixedly connected to one side of the first guide sheet (232), and the first insulating sheet (231) and the first guide sheet (232) are both provided with a through hole connected to the fastening hole (222); The movable plate unit (24) is composed of a second insulating plate (241) and a second guide plate (242) fixed to each other, the second insulating plate (241) and the second guide plate (242) are fixed to each other, and the second guide plate (242) is opposite to the first guide plate (232), and the second insulating plate (241) and the second guide plate (242) are rotatably connected with a fastening bolt (25) at positions corresponding to the fastening hole (222), and the movable plate unit (24) is adjusted in position in the fastening hole (222) by the fastening bolt (25).

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