Two-piece bus duct assembly type vertical elbow

Abstract

The utility model discloses a two-piece bus duct assembly type vertical elbow which comprises two bus ducts and an elbow assembly. The bus duct comprises a cover plate and a side plate, the side plate is fixed on the cover plate, a first cavity is formed between the side plate and the cover plate, one end of the bus duct is beveled to form a beveled end, two sides of the elbow assembly are respectively connected with the beveled end of one bus duct, and the two bus ducts are intersected; the elbow assembly comprises a first connecting piece, a second connecting piece and two sealing assemblies, the first connecting piece and the second connecting piece are arranged in a spaced mode in the first direction, the cover plate is fixed to the first connecting piece and the second connecting piece, and the two sealing assemblies are arranged in a spaced mode in the second direction. The two ends of the sealing assemblies are fixed to the first connecting piece and the second connecting piece correspondingly, and the two connecting pieces and the two sealing assemblies define a second cavity. And the assembly error is small, the precision is high and the appearance is beautiful.

Description

Technical Field

[0001] This utility model belongs to the technical field of busbar trunking devices, specifically relating to a two-piece busbar trunking assembly type vertical elbow. Background Technology

[0002] Busbar trunking, as a transmission facility for high-current power supply lines, is widely used in electrical equipment and power systems in civil buildings and factories. In power supply lines, to achieve horizontal or vertical current transmission through the copper busbars, elbows are needed to assemble and connect the busbar trunking in either direction, ensuring complete line connectivity. Elbows are crucial for ensuring that the intended route of the busbar trunking is achieved during construction and connection.

[0003] Existing elbows are generally connected by welding. However, welding can easily lead to assembly errors and poor appearance, especially for two-piece elbows, which are more difficult to weld and have more difficult-to-eliminate assembly errors, resulting in a high defect rate for finished elbows. Summary of the Invention

[0004] The purpose of this utility model is to provide a two-piece busbar duct assembly type vertical elbow to solve the problems of assembly error and poor appearance of vertical elbows.

[0005] The technical solution is as follows:

[0006] The two-piece busbar trunking assembly type vertical elbow of this utility model includes:

[0007] Two busbar trunking sections and one elbow assembly;

[0008] The busbar trunking includes a cover plate and a side plate. The side plate is fixed on the cover plate and there is a first cavity between the side plate and the cover plate. The busbar trunking is obliquely cut at one end to form an oblique end. The elbow assembly is connected to the oblique end of one of the busbar trunkings on each side and the two busbar trunkings are intersecting.

[0009] The elbow assembly includes a first connector, a second connector, and two sealing assemblies. The first connector and the second connector are spaced apart along a first direction. The cover plate is fixed on the first connector and the second connector. The two sealing assemblies are spaced apart along a second direction. The two ends of the sealing assemblies are respectively fixed on the first connector and the second connector. The two connectors and the two sealing assemblies enclose a second cavity.

[0010] In one embodiment, the first connector is located on the outside of the elbow, and the second connector is located on the inside of the elbow. The first connector is a frame, including two first columns, and a first plate protruding away from the elbow is connected between the two first columns.

[0011] In one embodiment, the copper busbar is assembled inside the elbow, and along the first direction, the distance between the first plate and the outer corner of the copper busbar is at least 20 mm.

[0012] In one embodiment, the second connector is a frame, the second connector includes two second columns, and a second plate is connected between the two second columns. Both the first plate and the second plate are provided with fixing columns, and the sealing assembly is fixed to the first connector and the second connector through the fixing columns.

[0013] In one embodiment, the second column is obliquely cut at one end facing another second column, the oblique cut surface of the second column coincides with the oblique cut surface of the busbar groove and forms a sharp angle, and one end of the sealing assembly is provided with two dovetail grooves spaced apart, one of the dovetail grooves cooperating with one of the sharp angles.

[0014] In one embodiment, a first protrusion is provided at the connection between the first plate and the first column, and a second protrusion is provided at the connection between the second plate and the second column. When the cover plate is obliquely cut, a first cut surface located outside the elbow and a second cut surface located inside the elbow are formed. The first protrusion extends toward the inside of the elbow and abuts against the first cut surface, and the second protrusion extends toward the inside of the elbow and abuts against the second cut surface.

[0015] In one embodiment, the sealing assembly has a first surface, on which a plurality of ribs extending along the first direction are spaced apart, and the first surfaces of the two sealing assemblies are arranged facing each other and both face the second cavity.

[0016] In one embodiment, grooves are provided on the surfaces of the first connector and the second connector that mate with the cover plate, and waterproof strips are installed in the grooves.

[0017] In one embodiment, the sealing assembly includes two protective plates and a sealing plate, with one of the protective plates installed at each end of the sealing plate, and the protective plates are fixed to the first connector or the second connector; a waterproof gasket is provided between the protective plates and the sealing plate.

[0018] In one embodiment, the cover plate includes a first plate and a second plate opposite to each other, a third plate is connected between the first plate and the second plate, the side plate is in the shape of a door frame, including a bottom plate and two side walls, the two side walls are respectively installed on the first plate or the second plate, and a gap is provided between the bottom plate and the third plate, the gap forming the first cavity.

[0019] The technical solution provided by this utility model has the following advantages and effects: A second cavity is formed by the first connector, the second connector, and two sealing components of the elbow assembly, where the corner section of the copper busbar is assembled. The straight section of the copper busbar is assembled through a two-piece busbar trough, thus achieving the assembly of the copper busbar together with two busbar troughs and one elbow assembly. The vertical elbow is assembled, requiring no welding, eliminating assembly errors caused by welding, and also has an aesthetically pleasing appearance. Attached Figure Description

[0020] Figure 1 A schematic diagram of horizontally stacked copper busbars;

[0021] Figure 2 This is a perspective view of the vertical elbow in this embodiment;

[0022] Figure 3 This is a perspective view of the busbar trunking in this embodiment;

[0023] Figure 4 This is a perspective view of the cover plate in this embodiment;

[0024] Figure 5 This is a perspective view of the side panel in this embodiment;

[0025] Figure 6 This is a perspective view of the elbow assembly in this embodiment;

[0026] Figure 7 This is a perspective view of the first connector in this embodiment;

[0027] Figure 8 This is a top view of the vertical elbow in this embodiment after assembly with the sealing assembly removed;

[0028] Figure 9 This is a perspective view of the second connector in this embodiment;

[0029] Figure 10 This is a perspective view of the vertical elbow in this embodiment after assembly with the upper sealing component removed.

[0030] Figure 11 for Figure 10 Enlarged view of point A in the middle;

[0031] Figure 12 for Figure 10 Enlarged view of point B in the middle;

[0032] Figure 13 This is a perspective view of the sealing assembly in this embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Copper busbar, 12. Straight line segment, 13. Corner segment.

[0035] 20. Busbar trough; 21. Beveled end; 22. Cover plate; 221. First plate; 222. Second plate; 223. Third plate; 224. First cut surface; 225. Second cut surface; 226. Rib; 227. Fixing hole; 228. Drain hole; 23. Side plate; 231. Bottom plate; 232. Side wall; 233. Notch; 24. First cavity.

[0036] 30. Elbow assembly; 31. First connector; 311. First column; 312. First plate; 313. First protruding post; 314. Groove; 32. Second connector; 321. Second column; 322. Second plate; 323. Second protruding post; 324. Groove; 33. Sealing assembly; 331. First end; 332. Second end; 333. Dovetail groove; 334. First surface; 335. Rib; 336. Protective plate; 337. Sealing plate; 34. Second cavity; 35. Fixed post; 36. Sharp corner; 37. First clearance space; 38. Second clearance space. Detailed Implementation

[0037] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0038] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0039] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0041] Vertical elbows are used for assembling such as Figure 1 The vertically stacked copper busbars 10 shown are each wrapped with an insulating film. To ensure that the copper busbars 10 meet electrical requirements and insulation performance, insulating tape is currently wrapped around the corners of the copper busbars 10. However, when manually wrapping the insulating tape around the copper busbars 10, it is difficult to control the thickness at the corners. Currently, vertical elbows are manufactured using welding processes, and the dimensions of the vertical elbows are determined during welding. Often, the thickness of the wrapped copper busbars 10 exceeds expectations, leading to assembly errors and making it difficult to assemble these copper busbars 10.

[0042] To simplify the assembly of copper busbars in vertical elbows, this invention eliminates the need for welding. Instead, the copper busbars are assembled using two busbar ducts and an elbow assembly, employing a prefabricated structure. This eliminates assembly errors caused by welding, resulting in both ease of use and an aesthetically pleasing appearance. Furthermore, vertical elbows with two-piece busbar ducts (i.e., copper busbars encased in two metal plates) are more difficult to weld and more prone to assembly errors than those with four-piece busbar ducts (i.e., copper busbars encased in four metal plates). Therefore, existing vertical elbows formed using welding processes generally employ four-piece busbar ducts. Thus, this invention's two-piece busbar duct prefabricated vertical elbow is not only easy to assemble but also structurally simple and easy to manufacture.

[0043] Figure 2 This is a perspective view of the vertical elbow of this embodiment. The vertical elbow mainly includes two busbar grooves 20 and an elbow assembly 30. The busbar grooves 20 are beveled at one end to form a beveled end 21. Each side of the elbow assembly 30 is riveted to the beveled end 21 of one busbar groove 20. Moreover, the two busbar grooves 20 are orthogonally arranged and, after being assembled with the elbow assembly 30, form a vertical elbow. The busbar grooves 20 are used to assemble the straight segments 12 of the copper busbar 10, and the elbow assembly 30 is used to assemble the corner segments 13 of the copper busbar 10. In some embodiments, the two busbar grooves 20 may also be arranged to intersect at a certain angle.

[0044] like Figure 3 As shown, unlike the typical four-piece busbar trunking structure, the busbar trunking 20 has a two-piece structure, including a cover plate 22 and a side plate 23. Wherein, as... Figure 4 As shown, the cover plate 22 has an H-shaped structure, including an integrally formed first plate 221, a second plate 222, and a third plate 223. The first plate 221 and the second plate 222 are arranged opposite to each other, and the third plate 223 is located between the first plate 221 and the second plate 222. (Reference) Figure 3 The side plate 23 is mounted on the cover plate 22. The specific mounting method is not limited; the side plate 23 can be fixed to the cover plate 22 using fasteners such as rivets, or it can be pressed into the cover plate 22 with a tight fit. Figure 5 As shown, the side panel 23 is door-frame shaped, including an integrally formed base plate 231 and two side walls 232, which are respectively fixed to the first plate 221 or the second plate 222. Figure 3As shown, after the side plate 23 is installed on the cover plate 22, there is a gap between the bottom plate 231 of the side plate 23 and the third plate 223 of the cover plate 22. This gap can be used to assemble the straight segment 12 of the copper busbar 10. That is, the cover plate 22 and the side plate 23 enclose and form a first cavity 24 for accommodating the straight segment 12 of the copper busbar 10. The above two-piece structure is simple in structure, easy to manufacture, and the copper busbar is easy to assemble. When the busbar trough 20 is obliquely cut, one end of the cover plate 22 and the side plate 23 is also obliquely cut accordingly. After the cover plate 22 is obliquely cut, a first cut surface 224 located on the outside of the bend and a second cut surface 225 located on the inside of the bend are formed.

[0045] like Figure 6 As shown, the elbow assembly 30 includes a first connector 31, a second connector 32, and two sealing assemblies 33. The first connector 31 and the second connector 32 are spaced apart along a first direction, with the first connector 31 located on the outer side of the elbow and the second connector 32 located on the inner side of the elbow. The two sealing assemblies 33 are spaced apart along a second direction, with their two ends fixed to the first connector 31 and the second connector 32, respectively. The two connectors (31, 32) and the two sealing assemblies 33 together form a second cavity 34 to accommodate the corner section 13 of the copper busbar 10. The assembled elbow assembly 30 makes the assembly of the corner section 13 of the copper busbar 10 simple and convenient, and eliminates the need for welding at the corner of the elbow, resulting in a more aesthetically pleasing appearance and higher assembly precision. The angle between the first direction and the horizontal direction and the angle between the oblique cutting direction of the busbar groove 20 and the horizontal direction are the same, while the second direction is perpendicular to the first direction.

[0046] When fixing the elbow assembly 30 to the busbar trough 20, the two ends of the cover plate 22 can be fixed to the first connector 31 and the second connector 32 respectively by riveting or screwing. Of course, the fixing method between the elbow assembly 30 and the busbar trough 20 is not limited, and other methods besides those in this embodiment can also be used for installation and fixing.

[0047] like Figure 7 As shown, in this embodiment, the first connecting member 31 is a frame structure, including two first columns 311, and a first plate 312 is connected between the two first columns 311. The first plate 312 can achieve the sealing of the second cavity 34 on the outside of the elbow. Figure 6 As shown, the first end 331 of the sealing component 33 has a shape that matches the two first posts 311, so that the first end 331 can be snapped between the two first posts 311, thereby limiting the sealing component 33.

[0048] To ensure a more standardized thickness of the copper busbar 10 during assembly and eliminate assembly errors, in this embodiment, adhesive tape is not used to wrap the corners of the copper busbar 10. Instead, a thin film spacer (not shown in the figure) is placed between every two copper busbars 10. The thin film spacer is rectangular, with its longitudinal direction aligned with the first direction. However, to meet electrical requirements, the longitudinal dimension of the thin film spacer will extend beyond the boundary of the copper busbar. Therefore, as... Figure 8 As shown, the first plate 312 protrudes away from the elbow, forming a first clearance space 37 to accommodate the end of the thin-film spacer. To meet different levels of electrical requirements, when the copper busbar is assembled inside the elbow, the shortest distance between the first plate 312 and the outer corner of the copper busbar 10 along the first direction is at least 20 mm. That is, preferably, the shortest distance between a point on the copper busbar 10 and a corresponding point on the first plate 312 in the first direction is at least 20 mm. By providing a structure adapted to insulation using a thin-film spacer, the assembly accuracy of the vertical elbow is improved.

[0049] like Figure 9 As shown, the second connecting member 32 is also a frame structure, including two second columns 321, with a second plate 322 connecting the two second columns 321. The second plate 322 can achieve sealing of the second cavity 34 inside the elbow. Accordingly, refer to... Figure 8 As shown, after the copper busbar is assembled, there is a second clearance space 38 between the second plate 322 and the inner corner of the copper busbar.

[0050] By designing the first connector 31 and the second connector 32 as a frame structure, it is not only convenient to install and fix the sealing assembly 33 on the first connector 31 and the second connector 32, but also makes the appearance of the first connector 31 and the second connector 32 more aesthetically pleasing after assembly with the busbar 20. Specifically, both the first plate 312 and the second plate 322 are provided with fixing posts 35. Through the fixing posts 35, the sealing assembly 33 can be fixed to the first connector 31 and the second connector 32 with threaded fasteners. It should be noted that the sealing assembly 33 can also be fixed to the first plate 312 and the second plate 322 in other ways.

[0051] Due to the fit requirements between the second column 321 and the busbar trough 20, the end of the second column 321 facing the other second column 321 is beveled. Furthermore, the beveled surface of the second column 321 coincides with the beveled surface of the busbar trough 20, forming a sharp angle 36. Specifically, on the side away from the side plate 23, the beveled surface of the second column 321 coincides with the beveled surface of the cover plate 22; on the side adjacent to the side plate 23, the beveled surface of the second column 321 coincides with the beveled surfaces of both the cover plate 22 and the side plate 23, forming a sharp angle 36. To facilitate the assembly of the sealing assembly 33 and the second connector 32 and ensure structural stability after assembly, two dovetail grooves 333 are spaced apart at the second end 332 of the sealing assembly 33. Each dovetail groove 333 engages with a sharp angle 36, allowing the sealing assembly 33 to be snapped and limited onto the two second columns 321 of the second connector 32.

[0052] To enhance the stability of vertical elbows after assembly, refer to Figure 10-12 A first protruding post 313 is provided at the connection between the first plate 312 and the first column 311, and a second protruding post 323 is provided at the connection between the second plate 322 and the second column 321. The specific shapes of the first protruding post 313 and the second protruding post 323 are not limited, and can be elongated, triangular, columnar, etc. The first protruding post 313 extends toward the inside of the elbow and abuts against the first cut surface 224 of the cover 22 or against the cut surface of the cover 22 and the side plate 23. The second protruding post 323 also extends toward the inside of the elbow and abuts against the second cut surface 225 of the cover 22 or against the cut surface of the cover 22 and the side plate 23.

[0053] like Figure 13 As shown, in this embodiment, a plurality of ribs 335 are spaced apart on the first surface 334 of the sealing component 33. The ribs 335 are preferably arranged along the longitudinal direction of the sealing component 33, but can also be arranged along the transverse direction of the sealing component 33. Figure 6 As shown, the first surfaces 334 of the two sealing components 33 are arranged facing each other and both face the second cavity 34. This arrangement makes the corner section 13 of the copper busbar 10 assembled in the second cavity 34 more stable.

[0054] To enhance waterproofing, grooves can be provided on the surface of the first connector 31 that mates with the cover plate 22, and grooves can also be provided on the surface of the second connector 32 that mates with the cover plate 22, with waterproof strips installed in the grooves. Specifically, in this embodiment, grooves are provided on the surfaces of the two first posts 311 of the first connector 31 that mate with the cover plate 22, and grooves are provided on the surfaces of the two second posts 321 of the second connector 32 that mate with the cover plate 22.

[0055] refer to Figure 13To facilitate assembly of the sealing assembly 33 with the first connector 31 and the second connector 32, the sealing assembly 33 is a split type, comprising two protective plates 336 and a sealing plate 337. A protective plate 336 is fixedly installed at each end of the sealing plate 337, and the protective plates 336 are fixed to either the first connector 31 or the second connector 32. By adopting this split structure, the length of the sealing plate 337 can be cut according to the width of the copper busbar, reducing the types of materials required and eliminating the need for subsequent processing, thus improving adaptability. When the sealing assembly 33 adopts the above split structure, the rib 335 can be set on one side surface of the sealing plate 337. To enhance the waterproof effect, a waterproof gasket can be placed between the protective plate 336 and the sealing plate 337.

[0056] refer to Figure 4 In this embodiment, both ends of the cover plate 22 are provided with fixing holes 227. With the help of these fixing holes 227, the cover plate 22, the first connector 31, and the second connector 32 can be fixed with fasteners to realize the assembly of the cover plate 22 and the elbow assembly 30. In order to make the first connector 31, the second connector 32 and the cover plate 22 more firmly assembled, the first plate 221 and the second plate 222 of the cover plate 22 are provided with outward protrusions on both sides. These protrusions form ribs 226. The two ends of the first column 311 of the first connector 31 are recessed inward to form grooves 314, and the ribs 226 cooperate with the grooves 314; the two ends of the second column 321 of the second connector 32 are recessed inward to form grooves 324, and the ribs 226 also cooperate with the grooves 324; thereby making the assembly of the cover plate 22 and the elbow assembly 30 convenient and firm.

[0057] refer to Figure 4 The cover plate 22 has not only fixing holes 227 at both ends, but also drain holes 228 for drainage. To avoid the fixing holes 227 and drain holes 228 being blocked by the side plate 23, causing assembly inconvenience and affecting drainage performance, refer to... Figure 5 The front and rear ends of the side wall 232 of the side plate 23 are recessed inward to form a notch 233 to avoid the fixing hole 227 and the drain hole 228, so that there will be no interference with the fixing hole 227 and the drain hole 228 during assembly.

[0058] In summary, the vertical elbow of this embodiment forms a second cavity through the first and second connectors and two sealing assemblies. At the corner where the copper busbar is assembled, the straight section of the copper busbar is assembled through a two-piece busbar trough, thus achieving the assembly of the copper busbar together with two busbar troughs and one elbow assembly. The vertical elbow is assembled without welding, eliminating assembly errors caused by welding, and also has an aesthetically pleasing appearance.

[0059] The above embodiments are not an exhaustive list based on the present invention, and there may be other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. A two-piece busway assembly type vertical elbow characterized by, The utility model relates to a copper busbar assembly, comprising: two bus ducts and a bend assembly; the bus ducts each comprise a cover plate and a side plate, the side plate is fixed on the cover plate and has a first cavity between the cover plate and the side plate, and the bus ducts are bevelled at one end to form bevelled ends, and the two bevelled ends of the bus ducts are connected to the two sides of the bend assembly respectively; the bend assembly comprises a first connecting piece, a second connecting piece and two sealing assemblies, the first connecting piece and the second connecting piece are arranged at intervals along a first direction, the cover plate is fixed on the first connecting piece and the second connecting piece, and the two sealing assemblies are arranged at intervals along a second direction, the two ends of the sealing assemblies are fixed on the first connecting piece and the second connecting piece respectively, and the two connecting pieces and the two sealing assemblies enclose a second cavity.

2. The two-piece busway assembly-type vertical elbow of claim 1, wherein, The first connecting piece is arranged on the outer side of the bend, the second connecting piece is arranged on the inner side of the bend, the first connecting piece is a frame body comprising two first vertical columns, and a first plate body is connected between the two first vertical columns and protrudes away from the bend.

3. The two-piece busway assembly-type vertical elbow of claim 2, wherein, A copper bar is arranged in the bend, and the distance between the first plate body and the outer corner of the copper bar along the first direction is at least 20 mm.

4. The two-piece busway assembly-type vertical elbow of claim 2, wherein, The second connecting piece is also a frame body comprising two second vertical columns, a second plate body is connected between the two second vertical columns, and a fixing column is arranged on each of the first plate body and the second plate body, so that the sealing assemblies are fixed on the first connecting piece and the second connecting piece through the fixing column.

5. The two-piece busway assembly-type vertical elbow of claim 4, wherein, The second vertical column is bevelled at one end facing the other second vertical column, the bevelled surface of the second vertical column coincides with the bevelled surface of the bus duct and forms a sharp corner, one end of the sealing assembly is arranged at intervals with two dovetail grooves, and one dovetail groove cooperates with one sharp corner.

6. The two-piece busway assembly-type vertical elbow of claim 4, wherein, The connection between the first plate body and the first vertical column is provided with a first protruding column, the connection between the second plate body and the second vertical column is provided with a second protruding column, the cover plate is bevelled to form a first cutting surface on the outer side of the bend and a second cutting surface on the inner side of the bend, the first protruding column extends towards the inner side of the bend and abuts against the first cutting surface, and the second protruding column extends towards the inner side of the bend and abuts against the second cutting surface.

7. The two-piece busway assembly vertical elbow of claim 1, wherein, The sealing assembly is provided with a first surface, a plurality of ribs extending along the first direction are arranged at intervals on the first surface, and the first surfaces of the two sealing assemblies are arranged facing each other and both face the second cavity.

8. The two-piece busway assembly-type vertical elbow of any one of claims 1-7, wherein, Grooves are arranged on the surfaces of the first connecting piece and the second connecting piece cooperating with the cover plate, and waterproof strips are arranged in the grooves.

9. The two-piece busway assembly-type vertical elbow of any one of claims 1-7, wherein, The sealing assembly comprises two protective plates and a sealing plate, one protective plate is arranged at each end of the sealing plate, and the protective plates are fixed on the first connecting piece or the second connecting piece; and a waterproof pad is arranged between the protective plates and the sealing plate.

10. The two-piece busway assembly-type vertical elbow of any one of claims 1-7, wherein, The cover plate comprises opposite first and second plate bodies, a third plate body is connected between the first and second plate bodies, the side plate is in the shape of a door frame and comprises a bottom plate and two side walls, the two side walls are respectively mounted on the first or second plate body, and a gap is arranged between the bottom plate and the third plate body, and the gap forms the first cavity.

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