Tubular bus duct and connection structure between tubular bus ducts

Abstract

The invention provides a tubular bus duct and a connection structure between the tubular bus ducts, and belongs to the technical field of bus ducts. Comprising an outer pipe structure, and the outer pipe structure comprises a first shell and a second shell which are mutually fixed into a pipe shape; the first shell and the second shell are arranged in parallel, the chip placing structure is located between the first shell and the second shell and connected with the first shell and the second shell, and 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 chip placing structure. By arranging the sheet placing structure and the outer pipe structure, the sheet placing structure is used for rapidly 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, the installation procedures are reduced, the installation efficiency is improved, meanwhile, heat generated in the working process is dissipated, the outer pipe structure and the sheet placing structure are matched with each other, and the installation efficiency is improved. By means of the outer pipe structure, the piece placing structure can be rapidly positioned and limited in the splicing process, and the splicing time is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of bus ducts, and in particular to a tubular bus duct and a connection structure between tubular bus ducts. Background Art

[0002] The bus duct is a busbar system composed of a metal plate as a protective shell, conductive bars, insulating materials and related accessories. It can be made into a plug-in closed busbar with plug-in junction boxes at regular intervals, or it can be made into a feeder-type closed busbar without a junction box in the middle. Among them, the tubular bus duct may be more convenient to install and maintain than the traditional bus duct due to its tubular structure, and the tubular bus duct usually occupies less space, which helps to save installation space.

[0003] During the production and manufacturing process of the existing tubular bus duct, the installation of the aluminum sheets of each phase inside is relatively complicated, and it is not possible to achieve quick positioning and installation. At the same time, the connection structure between the bus ducts requires various cumbersome positioning during installation, and the installation can only begin after accurate positioning. Therefore, the present application provides a tubular bus duct and a connection structure between tubular bus ducts to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a tubular bus duct and a connection structure between tubular bus ducts to solve the problem that during the production and manufacturing process of the existing tubular bus duct, the installation of aluminum sheets of each phase inside is relatively complicated and cannot be quickly positioned and installed. At the same time, the connection structure between the bus ducts requires various cumbersome positioning during installation, and the installation can only be started after accurate positioning.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A tubular bus duct and a connection structure between tubular bus ducts, comprising an outer tube structure, the outer tube structure comprising a first shell and a second shell fixed to each other in a tubular shape; a sheet placement structure, the sheet placement structure is located between the first shell and the second shell and connected to the first shell and the second shell, and the sheet placement structure is fixedly connected with 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, wherein 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 consistent, and the sheet placement structure is used to quickly install 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, thereby reducing the installation process, increasing the installation efficiency, and dissipating the heat generated during the operation; an outer tube connection structure is located between and connected to the two outer tube structures, and the outer tube connection structure is used to connect the two outer tube structures and increase the connection stability.

[0006] Optionally, the first shell and the second shell are both semi-circular ring structures with consistent specifications, and the inner walls of the first shell and the second shell are provided with three groups of corresponding matching grooves, and each group of the matching grooves consists of four sheet placement slots which are 45° to each other; the two side surfaces of the second shell connected to the first shell are provided with docking grooves, and the first shell is fixedly connected with matching docking protrusions at positions corresponding to the docking grooves; annular grooves are provided at corresponding positions on the sides of both ends of the first shell and the second shell, and side rings are fixedly connected in the annular grooves, and symmetrical limit blocks are fixedly connected at both ends of the first shell and the second shell, and the limit blocks are of convex structures; connecting slots are provided at corresponding positions on the outer walls at both ends of the first shell and the second shell.

[0007] Optionally, the sheet placement structure includes a first sheet placement unit, a second sheet placement unit, a third sheet placement unit and a fourth sheet placement unit, which are snap-connected to the inner walls of the first shell and the second shell and are connected end to end in sequence to form a cylindrical shape. The first sheet placement unit, the second sheet placement unit, the third sheet placement unit and the fourth sheet placement unit all have consistent fan-shaped columnar shapes, and the outer walls of the first sheet placement unit, the second sheet placement unit, the third sheet placement unit and the fourth sheet placement unit are fixedly connected with limiting strips at positions corresponding to the sheet placement slots.

[0008] Optionally, the first sheet placement unit includes a first base snapped onto the inner surface wall of the second shell, a first square groove is provided on the top of the first base, two mutually symmetrical first rotating plates are rotatably connected at both ends of the top of the first base, when the two first rotating plates are in an initial position, their bottoms are parallel to the bottom of the first square groove, and a grounding groove is formed between the two first square grooves, the tops of the two first rotating plates are both provided with a connected second square groove, the second square grooves have the same specifications as the first square grooves, two symmetrical second rotating plates are rotatably connected at the outer edges of the two first rotating plates, when the two second rotating plates are in an initial position, their bottoms are parallel to the bottom of the second square groove, and a C-phase groove is formed between the two second square grooves, and a plurality of evenly arranged heat dissipation grooves are provided on the top of the second rotating plate; the second sheet placement unit includes a second base snapped onto between the first shell and the second shell, the top of the second base A third groove is provided on the part, both sides of the top of the grounding groove are rotatably connected to the second rotating plate, a B-phase groove is formed between the two second rotating plates and the third groove, the outer shape of the second base is consistent with the shape of the first base and the two first rotating plates when they are in the initial position, the second sheet-placing unit, the third sheet-placing unit and the fourth sheet-placing unit have the same shape and structure, and the third sheet-placing unit and the fourth sheet-placing unit are respectively provided with an A-phase groove and an N-phase groove; 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; it also includes 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 clamping the two first rotating plates and the two second rotating plates.

[0009] Optionally, the elastic unit includes extension grooves respectively opened at the bottom of the first square groove, the second square groove and the third square groove, extrusion grooves are opened at both ends of the bottom of the extension groove, and a pressing plate is provided on the top of the extension groove. Four symmetrical pressing plate sliders are fixedly connected to the bottom of the pressing plate, and the pressing plate is slidably connected in the extrusion groove through the pressing plate slider. The pressing plate slider is an L-shaped structure, and the thickness of the pressing plate gradually changes from thick to thin from the middle to both sides.

[0010] Optionally, the connecting unit includes a fastening block fixedly connected to one side of one of the second rotating plates, and a fastening slot is provided at a position of the other second rotating plate corresponding to the fastening block, and the two second rotating plates are fixed to each other by the fastening block and the fastening slot, and an inner groove is provided at the top of the open end of the fastening slot.

[0011] Optionally, the outer tube connection structure includes a sleeve fixedly connected between the two outer tube structures and an aluminum sheet connector nestedly connected between the two sheet placement structures.

[0012] Optionally, the sleeve is formed by two semi-ring columns with the same structure hinged to each other, and both ends of the sleeve are fixedly connected with extension rings, and the inner wall of the extension ring is fixedly connected with a connecting clamp ring at a position corresponding to the connecting groove, the length of the extension ring is consistent with the spacing distance between the two outer tube structures, and the inner ring diameter of the sleeve is consistent with the outer ring diameter of the aluminum sheet connecting sleeve.

[0013] Optionally, the aluminum sheet connector is a cylindrical structure with a square groove running through the center, and a matching baffle groove is provided at a position corresponding to the limit block of the aluminum sheet connector, and four fastening holes that are 90° to each other and pass through the aluminum sheet connector are provided on the aluminum sheet connector, and the four inner surfaces of the square groove are fixedly connected with fixed sheet units, and a movable sheet unit is correspondingly installed on each of the fixed sheet units, and the fixed sheet unit and the movable sheet unit are both an integrated structure.

[0014] Optionally, the fixed sheet unit is composed of a first insulating sheet and a first guide sheet fixed to each other, one side of the first guide sheet is fixedly connected to the inner surface of the square groove, the first guide sheet is fixedly connected to one side of the first insulating sheet, and the first insulating sheet and the first guide sheet are both provided with a through hole connected to the fastening hole; the moving sheet unit is composed of a second insulating sheet and a second guide sheet fixed to each other, the second insulating sheet and the second guide sheet are fixed to each other, and the second guide sheet is opposite to the first guide sheet, the second insulating sheet and the second guide sheet are rotatably connected with fastening bolts at positions corresponding to the fastening hole, and the moving sheet unit is position-adjusted in the fastening hole by the fastening bolts.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, by setting a sheet placement structure and an outer tube structure, the sheet placement structure is used to quickly install 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, thereby reducing the installation process and increasing the installation efficiency. At the same time, the heat generated during the operation is dissipated. The outer tube structure and the sheet placement structure are adapted to each other. The outer tube structure can be used to realize the rapid positioning and limiting of the sheet placement structure during assembly, thereby reducing the assembly time.

[0016] By setting up an outer tube connection structure, two outer tube structures are connected through the outer tube connection structure. The connection can be carried out by simply adjusting the position of the outer tube structure. The baffle groove on the aluminum sheet connector can be used to achieve rapid positioning and fixation with the outer tube structure, and no secondary positioning is required during installation.

[0017] By setting a pressing plate, the pressing plate is used to adjust the thickness inside the second square groove, so that the C-phase aluminum sheet can be squeezed and fitted with the pressing plate during installation, reducing the thickness inside the groove, and then the second rotating plate is used to extrude the C-phase aluminum sheet, making the C-phase aluminum sheet more stable after installation and without position displacement.

[0018] By setting the clamping unit, the clamping unit will change the fixing method between the two first rotating plates and the two second rotating plates, and there is no need to fix them by other fixing methods such as screws. The fixing method is simple to operate and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the connection between tubular bus ducts; Figure 2 It is a schematic diagram of the three-dimensional structure of tubular bus duct; Figure 3 It is a schematic diagram of the exploded three-dimensional structure of the tubular bus duct; Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure at A in the middle; Figure 5 It is a schematic diagram of the three-dimensional structure of the first state of the sheet placement structure; Figure 6 It is a schematic diagram of the three-dimensional structure of the second state of the sheet placement structure; Figure 7 It is a schematic diagram of the three-dimensional structure of the sheet placement structure and 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; Figure 8 This is a schematic diagram of the three-dimensional structure of the first sheet placement unit in the first state; Fig. 9 This is a schematic diagram of the three-dimensional structure of the first sheet placement unit in the second state; Fig.10 This is a schematic diagram of the three-dimensional structure of the first sheet placement unit in the third state; Fig.11 It is a schematic diagram of a cutaway three-dimensional structure of the first sheet placement unit in the third state; Fig.12 It is a schematic diagram of the exploded three-dimensional structure of the first base and the pressing tablet; Fig.13 for Fig.12 Schematic diagram of the three-dimensional structure at B in the middle; Fig.14 is a schematic diagram of the three-dimensional structure of the second sheet placement unit; Fig.15It is a schematic diagram of the three-dimensional structure of the outer tube connection structure and the outer tube structure assembly; Fig.16 It is a schematic diagram of the cutaway three-dimensional structure of the outer tube connection structure and the outer tube structure assembly part; Fig.17 It is a schematic diagram of the exploded three-dimensional structure of the outer tube connection structure; Fig.18 It is a schematic diagram of the three-dimensional structure of the aluminum sheet connector.

[0021] Reference numerals: 1. Outer tube structure; 11. First shell; 12. Second shell; 121. Docking groove; 13. Connecting slot; 14. Limit stopper; 15. Plate slot; 16. Annular groove; 2. Outer tube connection structure; 21. Sleeve; 211. Extension ring; 212. Connecting snap ring; 22. Aluminum sheet connector; 221. Blocking plate groove; 222. Fastening hole; 23. Fixed sheet unit; 231. First insulating sheet; 232. First guide sheet; 24. Moving sheet unit; 241. Second insulating sheet; 242. Second guide sheet; 25. Fastening bolt; 3. Side ring; 4. Plate structure; 41. First plate 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 slot; 416, pressing sheet; 4161, pressing sheet slider; 42, second sheet placement unit; 421, B phase slot; 422, second base; 43, third sheet placement unit; 431, A phase slot; 44, fourth sheet placement unit; 441, N phase slot; 45, limiting 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.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0023] The following is a detailed description of a tubular bus duct and a connection structure between tubular bus ducts provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0024] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0025] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0026] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0027] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0028] like Figures 1 to 18As shown, an embodiment of the present invention provides a tubular bus duct and a connection structure between tubular bus ducts, including an outer tube structure 1, the outer tube structure 1 is an outer shell for protecting an internal sheet structure 4, the outer tube structure 1 includes a first outer shell 11 and a second outer shell 12 fixed to each other in a tubular shape, the first outer shell 11 and the second outer shell 12 are fitted to each other in a tubular shape when installed, and the first outer shell 11 and the second outer shell 12 are arranged to facilitate the placement of the sheet structure 4 when assembling the bus duct; the sheet structure 4 is located between the first outer shell 11 and the second outer shell 12, and is connected to the first outer shell 11 and the second outer shell 12, and the sheet structure 4 is fixedly connected with an A-phase aluminum sheet 5, a B-phase aluminum sheet 6, and a C-phase aluminum sheet 7. grounding aluminum sheet 8 and N-phase aluminum sheet 9, wherein the structures and specifications 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 are consistent, and the sheet placement structure 4 is used to quickly install 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, thereby reducing the installation process, increasing the installation efficiency, and dissipating the heat generated during the operation; the outer tube connection structure 2 is located between the two outer tube structures 1 and connected to each other, and the outer tube connection structure 2 is used to connect the two outer tube structures 1 and increase the connection stability, and at the same time, 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 on the sheet placement structure 4 are interconnected.

[0029] During manufacturing and installation, the second outer shell 12 is fixed by a clamp, and then the sheet placement structure 4 assembled with 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 is placed on the second outer shell 12, and then the first outer shell 11 is adapted and fixed on the second outer shell 12, so that the entire sheet placement structure 4 is limited and fixed; when installing the tubular bus duct, after the first outer tube structure 1 is fixed and installed, the outer tube connecting structure 2 is fixed to one end of the first outer tube structure 1, and then the outer tube connecting structure 2 is fixed. After the outer tube connecting structure 2 is fixed, the second outer tube structure 1 is installed on the outer tube connecting structure 2, so that the two outer tube structures 1 are connected, and the above steps are repeated in sequence until all the outer tube structures 1 are installed.

[0030] like Figures 1 to 5As shown, the first shell 11 and the second shell 12 are both semi-circular structures with the same specifications. The inner walls of the first shell 11 and the second shell 12 are provided with three groups of matching grooves corresponding to each other, and each group of matching grooves is composed of four sheet placement slots 15 that are 45 degrees to each other; the two side surfaces of the second shell 12 connected to the first shell 11 are provided with docking grooves 121, and the first shell 11 is fixedly connected with matching docking protrusions at positions corresponding to the docking grooves 121. The docking grooves 121 and the docking protrusions are used to guide and limit the second shell 12 and the first shell 11, so as to prevent the staff from needing to gradually adjust the alignment when installing the first shell 11 and the second shell 12, which causes troublesome installation work; Annular grooves 16 are provided at corresponding positions on the side surfaces at both ends of the first shell 11 and the second shell 12. The two annular grooves 16 provided on the same side of the first shell 11 and the second shell 12 are interconnected and annular, and an internal thread is provided on the inner wall thereof. A side ring 3 is fixedly connected in the annular groove 16, and an external thread matching the internal thread is provided on the inner wall of the side ring 3. Both ends of the first shell 11 and the second shell 12 are fixedly connected with symmetrical limit blocks 14, and the limit blocks 14 are convex structures; corresponding positions on the outer walls at both ends of the first shell 11 and the second shell 12 are provided with connecting grooves 13, and the two connecting grooves 13 provided on the same side of the first shell 11 and the second shell 12 are interconnected and annular.

[0031] When fixing the first shell 11 and the second shell 12, first fix the second shell 12 by means of a clamp or the like, then 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, thereby fixing the two ends of the first shell 11 and the second shell 12, after the fixing is completed, since the docking protrusion is aligned with the relative position of the docking groove 121 and threaded holes are opened, the two sides of the first shell 11 and the second shell 12 can be fixed by screws.

[0032] like Figure 2 , Figure 6 and Figure 7As shown, the sheet placement structure 4 includes 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 connected to the inner walls of the first shell 11 and the second shell 12 end to end and are sequentially connected to form a cylindrical shape. 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 surround each other to form a hollow cylindrical structure. The diameter of the cylindrical structure is consistent with the inner wall diameter of the first shell 11 and the second shell 12. Therefore, when 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 wound together, they can be placed between the first shell 11 and the second shell 12, and are limited by the inner walls of the first shell 11 and the second shell 12. , so that they will not be loose, and at the same time, the limiting strips 45 on the outer walls of the first sheet unit 41, the second sheet unit 42, the third sheet unit 43 and the fourth sheet unit 44 are respectively engaged and limited by the sheet placement slots 15 on the inner walls of the first shell 11 and the second shell 12, so that they will not rotate or slide inside the first shell 11 and the second shell 12, avoiding positional displacement. The outer shapes of the first sheet unit 41, the second sheet unit 42, the third sheet unit 43 and the fourth sheet unit 44 are all consistent fan-shaped columns, and the outer walls of the first sheet unit 41, the second sheet unit 42, the third sheet unit 43 and the fourth sheet unit 44 are fixedly connected with limiting strips 45 at the positions corresponding to the sheet placement slots 15.

[0033] like Figures 6 to 11 and Fig.14As shown, the first sheet placement unit 41 includes a first base 413 that is snap-connected to the inner surface wall of the second shell 12, a rotating block is fixedly connected to the edge position of the first base 413 and the second base 422 in the same direction, and a rotating shaft is fixedly connected to the two ends of the rotating block, and a rotating groove is opened at the corresponding position of the second base 422 and the rotating block, and a rotating hole is opened at both ends of the rotating groove. The first base 413 and the second base 422 are rotatably connected through the rotating shaft on the rotating block and the rotating hole in the rotating groove. Through this connection method, 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 mutually rotatably connected, and a first square groove is opened on the top of the first base 413, and two mutually symmetrical first rotating shafts are rotatably connected at the two ends of the top of the first base 413. Plate 414, 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 the two first rotating plates 414 and the first square groove, and 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, and then the grounding aluminum sheet 8 is inserted 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 are rotated to the initial position. While rotating the two first rotating plates 414, the two first rotating plates 414 are limited and fixed by the clamping unit, and then the bottom of the two first rotating plates 414 presses against the grounding aluminum sheet 8, and the grounding aluminum sheet 8 is fixed with the elastic unit.

[0034] A second square groove connected to each other is provided on the top of the two first rotating plates 414. The specifications of the second square groove and the first square groove are consistent. Two symmetrical second rotating plates 415 are rotatably connected at the outer edges of the two first rotating plates 414. When the two second rotating plates 415 are in the initial position, their bottoms are parallel to the bottoms of the second square grooves, and a C-phase groove 411 is formed between the second square grooves. A C-phase aluminum sheet 7 is installed in the C-phase groove 411. Consistent with the principle of installing the grounding aluminum sheet 8, the two second rotating plates 415 are rotated and unfolded to expose the second square grooves, and then the C-phase aluminum sheet 7 is inserted into the second square groove. Then, by rotating the two second rotating plates 415, the C-phase aluminum sheet 7 is supported by the bottoms of the two second rotating plates 415, and the C-phase aluminum sheet 7 is fixed with the elastic unit.

[0035] A plurality of evenly arranged heat dissipation grooves 4151 are provided on the top of the second rotating plate 415, and the heat dissipation grooves 4151 are used to dissipate the heat generated by the C-phase aluminum sheet 7 during operation. The second sheet placement unit 42 includes a second base 422 that is clamped between the first shell 11 and the second shell 12. A third-party groove is provided on the top of the second base 422. Both sides of the top of the grounding groove 412 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, and then the B-phase aluminum sheet 6 is clamped into the third-party groove, and then the two second rotating plates 415 are rotated to support the B-phase aluminum sheet 6 through the bottom of the two second rotating plates 415, and the B-phase aluminum sheet 6 is fixed in cooperation with the elastic unit.

[0036] 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 the initial position. The second sheet unit 42, the third sheet unit 43 and the fourth sheet unit 44 are consistent in shape and structure. The third sheet unit 43 and the fourth sheet unit 44 are respectively provided with an A-phase groove 431 and an N-phase groove 441. The A-phase groove 431 is installed with an A-phase aluminum sheet 5, and the N-phase groove 441 is installed with an N-phase aluminum sheet 9. The installation principle of the A-phase aluminum sheet 5 and the N-phase aluminum sheet 9 is the same as the installation principle of the B-phase aluminum sheet 6; it also includes elastic means 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. The unit and the clamping unit are respectively used to clamp the two first rotating plates 414 and the two second rotating plates 415, and the elastic unit is used to adjust the groove thickness of the first square groove, the second square groove and the third square groove, so 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 are squeezed and fitted with the elastic unit during installation, so 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 are installed more firmly, and 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 fixing, without the need for fixing by other fixing methods such as screws, and the fixing method is simple to operate, saving time and effort.

[0037] like Figures 8 to 11As shown, the elastic unit includes extension grooves 4131 respectively opened at the bottom of the first square groove, the second square groove and the third-party groove, and extrusion grooves are opened at both ends of the bottom of the extension groove 4131. A pressing sheet 416 is provided at the top of the extension groove 4131. Four symmetrical pressing sheet sliders 4161 are fixedly connected to the bottom of the pressing sheet 416. The pressing sheet 416 is slidably connected in the extrusion groove through the pressing sheet sliders 4161. The pressing sheet sliders 4161 are L-shaped structures. The thickness of the pressing sheet 416 gradually changes from thick to thin from the middle to both sides. When the top of the pressing sheet 416 is squeezed, the pressing sheet 416 will be compressed toward the corresponding bottom of the first square groove, the second square groove and the third-party groove. When compressed, the pressing sheet sliders 4161 on both sides will be driven to slide along the extrusion groove until the entire pressing sheet 416 is in contact with the corresponding bottom of the first square groove, the second square groove and the third-party groove.

[0038] like Fig.11 and Fig.12 As shown, the clamping unit includes a fastening block 4152 fixedly connected to one side of one of the second rotating plates 415, and a fastening slot 4153 is provided at a position corresponding to the fastening block 4152 of the other second rotating plate 415. The two second rotating plates 415 are clamped and fixed to each other through the fastening block 4152 and the fastening slot 4153. The top of the open end of the fastening slot 4153 is provided with an inner groove. The setting of the inner groove ensures that when the fastening block 4152 and the fastening slot 4153 start to contact, there will be no The fastening block 4152 is squeezed and restricted by the open end of the fastening slot 4153. The fastening block 4152 can be embedded in 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 slowly connect with the fastening slot 4153, first contacting the inner groove at the top of the fastening slot 4153. As the rotation angle increases, the fastening block 4152 is completely inserted into the fastening slot 4153, thereby fixing the two second rotating plates 415.

[0039] like Figures 15 to 18As shown, the outer tube connection structure 2 includes a sleeve 21 fixedly connected between the two outer tube structures 1 and an aluminum sheet sleeve 22 nested and connected between the two sheet structures 4. The sleeve 21 is installed between the two outer tube structures 1 to protect the aluminum sheet sleeve 22. The aluminum sheet sleeve 22 is used to connect the sheet structures 4 inside the two outer tube structures 1. The sleeve 21 is formed by two semi-ring columns with the same structure hinged to each other. Both ends of the sleeve 21 are fixedly connected with an extension ring 211. The inner wall of the extension ring 211 is fixedly connected with a connecting clamp ring 212 at a position corresponding to the connecting clamp groove 13. The length of the extension ring 211 is consistent with the spacing distance between the two outer tube structures 1. The inner circle of the sleeve 21 is straight. The diameter is consistent with the outer ring diameter of the aluminum sheet sleeve 22. The aluminum sheet sleeve 22 is a cylindrical structure with a square groove running through the center. The aluminum sheet sleeve 22 is provided with a matching baffle groove 221 at a position corresponding to the limit stopper 14. The depth of one baffle groove 221 is greater than the depth of the other baffle groove 221. The depth of the deeper baffle groove 221 is the sum of the thicknesses of the grounding aluminum sheet 8 and the limit stopper 14. The aluminum sheet sleeve 22 is provided with four fastening holes 222 that are 90° to each other and run through. The four inner surfaces of the square groove are fixedly connected with stator units 23, and each stator unit 23 is correspondingly installed with a movable unit 24. The stator unit 23 and the movable unit 24 are both integrated structures.

[0040] When connecting two outer tube structures 1, first install an outer tube structure 1 with a fixed sheet structure 4, and align the two baffle grooves 221 of the aluminum sheet connector 22 with the limit block 14 on the first shell 11 and the second shell 12 respectively. Since the limit block 14 is a convex structure, the protrusions on both sides of the limit block 14 will hold the aluminum sheet connector 22, and at the same time, the two limit blocks 14 will limit the position of the aluminum sheet connector 22. When the aluminum sheet connector 22 is installed, the plate structure 4 is fixed. The A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7 and N-phase aluminum sheet 9 installed on the sheet 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 stopper 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 limit stopper 14 on the other outer tube structure 1 is inserted into the baffle groove 221. The A-phase aluminum sheet 5, B-phase aluminum sheet 6, C-phase aluminum sheet 7 and N-phase aluminum sheet 9 inside 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 baffle groove 221 and fits with the limit block 14 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 installed, the connecting clips 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.

[0041] like Fig.17 and Fig.18As shown, 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 guide sheet 232 is fixedly connected to the inner surface of the square groove, the first guide sheet 232 is fixedly connected to one side of the first insulating sheet 231, 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 moving sheet unit 24 is composed of a second insulating sheet 241 and a second guide sheet 242 fixed to each other, the second insulating sheet 241 and the second guide sheet 242 are fixed to each other, and the second guide sheet 242 is opposite to the first guide sheet 232, the second insulating sheet 241 and the second guide sheet 242 are rotatably connected with the fastening bolt 25 at the corresponding position of the fastening hole 222, the second insulating sheet 241 and the first insulating sheet 231 are insulating materials, the second guide sheet 242 and the first guide sheet 232 are conductive materials, and the fastening bolt 25 is close to the moving sheet An annular groove is provided at one end of the unit 24, and the movable plate unit 24 is sleeved in the annular groove, so that the fastening bolt 25 can rotate on the second insulating plate 241 and the second guide plate 242, and the movable plate unit 24 is adjusted in position in the fastening hole 222 by the fastening bolt 25, wherein the fastening hole 222 is a fastening threaded hole compatible with the fastening bolt 25. When it is necessary to adjust the movable plate unit 24 close to the fixed plate unit 23, the fastening bolt 25 is rotated in the fastening hole 222 by a tool, so that the fastening bolt 25 drives the second insulating plate 241 and the second guide plate 242 thereon to move along with the fastening bolt 25, thereby adjusting the distance between the second insulating plate 241 and the second guide plate 242 and the first insulating plate 231 and the first guide plate 232, and then clamping the A-phase aluminum plate 5, the B-phase aluminum plate 6, the C-phase aluminum plate 7 and the N-phase aluminum plate 9 respectively inserted therebetween.

[0042] The working principle of the technical solution provided by the present invention is as follows: during manufacturing and installation, 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 first installed on the sheet placement structure 4; during installation, 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 first unfolded and laid flat on the workbench, and then the grounding aluminum sheet 8, the C-phase aluminum sheet 7, the B-phase aluminum sheet 6, the A-phase aluminum sheet 5 and the N-phase aluminum sheet 9 are installed in sequence.

[0043] 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, and then the grounding aluminum sheet 8 is inserted into the pressing plate 416 in 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 are rotated to the initial position. When the two second rotating plates 415 rotate, they will approach each other. During the approaching process, the fastening block 4152 will slowly contact the fastening slot 4153, and first contact the inner groove at the top of the fastening slot 4153. As the rotation angle increases, the fastening block 4152 is completely inserted into the fastening slot 4153, thereby fixing the two second rotating plates 415, and then the bottom of the two first rotating plates 414 presses against the grounding aluminum sheet 8. During the process, the top of the pressing sheet 416 is squeezed by the grounding aluminum sheet 8, and the pressing sheet 416 will be compressed toward the bottom of the first square groove. During the compression, the pressing sheet sliders 4161 on both sides will slide along the extrusion slide groove until the entire pressing sheet 416 is in contact with the surface 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.

[0044] When installing the C-phase aluminum sheet 7, the installation principle 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, and then the C-phase aluminum sheet 7 is inserted into the second square groove. The two second rotating plates 415 are rotated to support the C-phase aluminum sheet 7 through the bottom of the two second rotating plates 415, and the C-phase aluminum sheet 7 is fixed with the elastic unit. 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, and then the B-phase aluminum sheet 6 is inserted into the third-party groove, and then the two second rotating plates 415 are rotated to support the B-phase aluminum sheet 6 through the bottom of the two second rotating plates 415, and the B-phase aluminum sheet 6 is fixed with the elastic unit. 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.

[0045] After the sheet placement structure 4 is installed, first fix the second shell 12 by a clamp, and then rotate 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 again to make them fit together into a cylindrical shape, and then put the cylindrical first sheet placement unit 41, the second sheet placement unit 42, the third sheet placement unit 43 and the fourth sheet placement unit 44 into the second shell 12, and at the same time put the limiting strips 45 on their surface walls into the sheet placement slots 15 on the inner surface wall of the second shell 12, and the sheet placement structure 4 is limited on the second shell 12 by the limiting strips 45 and the sheet placement slots 15, and there will be no positional displacement.

[0046] 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.

[0047] 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.

[0048] 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 and a connection structure between tubular bus ducts, 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 shell (11) and the second shell (12), and being connected to the first shell (11) and the second shell (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) being fixedly connected to the sheet placement structure (4); wherein 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 specification; and the sheet placement structure (4) is used for quickly installing 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), thereby reducing installation procedures, increasing installation efficiency, and dissipating heat generated during operation; The outer tube connection structure (2) is located between and connected to the two outer tube structures (1), and the outer tube connection structure (2) is used to connect the two outer tube structures (1) while increasing the connection stability.

2. The tubular bus duct and the connection structure between tubular bus ducts 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 and the connection structure between tubular bus ducts according to claim 2, characterized in that: 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 connected end to end in a cylindrical shape and are clamped to the inner walls of the first shell (11) and the second shell (12); 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 column shape; and 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 a limiting strip (45) at a position corresponding to the sheet placement slot (15).

4. The tubular bus duct and the connection structure between tubular bus ducts according to claim 3, characterized in that: 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 second sheet placement unit (42) comprises a second base (422) clamped between the first housing (11) and the second housing (12); a third slot is provided on the top of the second base (422); both sides of the top of the grounding slot (412) are rotatably connected to the second rotating plate (415); a B-phase slot (421) is formed between the two second rotating plates (415) and the third-party slot; 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 slot (431) and an N-phase slot (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 and the connection structure between tubular bus ducts 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 and the connection structure between tubular bus ducts 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 and the connection structure between tubular bus ducts 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 and the connection structure between tubular bus ducts according to claim 7, characterized in that: The sleeve (21) is formed by two semi-ring columns of identical structure being 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 length of the extension ring (211) is consistent with the spacing distance between the two outer tube structures (1), and the inner ring diameter of the sleeve (21) is consistent with the outer ring diameter of the aluminum sheet connector (22).

9. The tubular bus duct and the connection structure between tubular bus ducts 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 and the connection structure between tubular bus ducts 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 guide sheet (232) is fixedly connected to the inner surface of the square groove, the first guide sheet (232) is fixedly connected to one side of the first insulating sheet (231), 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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