Bus duct convenient to maintain
By designing a convenient busbar trunking structure, and utilizing the limiting structure of full-slot and half-slot as well as the support of the tray, the inner shell of the busbar trunking can be easily replaced, solving the problem of cumbersome conductor replacement in the existing technology and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHENGKAI ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-05-08
AI Technical Summary
Replacing a single conductor in existing busbar trunking is cumbersome, especially since the distance between the busbar trunking and the ceiling is small, making it difficult to vertically disassemble and install the conductor, which leads to inconvenience in maintenance.
A busbar trunking system was designed, comprising a shell, insulating partition, semi-slot, full-slot, and support plate. The conductor can be easily replaced by horizontally pulling out the inner shell. The limiting structure of the full-slot and semi-slot, combined with the movement of the support plate and the support of the insertion plate, simplifies the disassembly and assembly process.
It enables convenient replacement of the inner shell without disassembling the outer shell cover and using special tools, reducing operation steps, avoiding impact on the installation height of the busbar trunking, and improving maintenance efficiency.
Smart Images

Figure CN224218071U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of busbar technology, specifically relating to a busbar that is easy to maintain. Background Technology
[0002] Busbar trunking is a closed metal device made of copper or aluminum busbars, used to distribute large amounts of power to various components in a distributed system. It is increasingly replacing electrical wires and cables in indoor low-voltage power transmission trunk line projects.
[0003] The existing busbar trunking has multiple sets of insulating conductors densely arranged inside. When a single conductor is damaged and needs to be replaced, the top cover of the busbar trunking is usually opened and the conductor is removed. This method requires repeated disassembly and reassembly of the top cover, which is quite cumbersome. In addition, the distance between the busbar trunking and the ceiling is small, making it difficult to vertically disassemble and reassemble the conductor.
[0004] Therefore, a busbar trunking system that is easy to maintain is proposed. Summary of the Invention
[0005] This utility model provides a busbar trunking that is easy to maintain, and its purpose is to solve the problems mentioned above.
[0006] This utility model provides a convenient busbar trunking system, comprising: an outer shell; five insulating partitions evenly spaced at the bottom of the inner shell; a semi-slot 1 formed on the outer wall of the insulating partitions; an inner shell located inside the outer shell near the position between adjacent insulating partitions; a semi-slot 2 formed on the outer wall of the inner shell near the side of the semi-slot 1; an embedded groove formed at the bottom of the outer shell; a slot for a locking strip formed at the top of the embedded groove near the position directly below the semi-slots 1 and 2; a support plate located directly below the embedded groove; a full locking strip welded to the top of the support plate; an inner groove formed at the bottom of the outer shell near the side of the embedded groove; an insert plate sliding on the inner wall of the inner groove; a spring located between the inner wall of the inner groove and the outer wall of the insert plate; a slot formed on the outer wall of the support plate; and a heat dissipation channel extending through the bottom of the outer shell, the bottom of the insulating partitions, and the bottom of the outer shell cover.
[0007] Furthermore, the heat dissipation channels on the outer shell, the insulating partition, and the outer shell cover coincide in the vertical direction;
[0008] By adopting the above technical solution, the heat dissipation channels are connected, allowing air to flow vertically within the channels, thus achieving airflow guidance and using the airflow to remove more heat and dissipate heat from the busbar trunking.
[0009] Furthermore, the full card strip passes through the card strip slot, and the outer wall of the full card strip matches and fits the inner wall of half card slot one and half card slot two;
[0010] By adopting the above technical solution, the full card strip can pass through the card strip slot and be inserted into the interior of half card slot one and half card slot two, thereby limiting the inner shell and preventing the inner shell from being in the middle of the outer shell.
[0011] Furthermore, the tray has an L-shaped cross-section and can be inserted into a slot;
[0012] By adopting the above technical solution, it is easy to push the tray by hand, thereby realizing the movement of the tray and ensuring that the tray can be inserted into the slot.
[0013] Furthermore, a through slot is provided inside the outer casing near the position between the inner groove and the inner recess, through which the insert plate can pass;
[0014] By adopting the above technical solution, it is ensured that a part of the insert plate can be inserted into the slot 1 in the tray, thereby supporting the tray and preventing the tray from falling under the action of gravity.
[0015] Furthermore, the inner shell is provided with conductive sheets inside, and the inner shell is precisely fitted between two insulating partitions;
[0016] By adopting the above technical solution, adjacent inner shells are separated by two insulating partitions to achieve insulation protection, and the two insulating partitions provide a limit for the inserted inner shell.
[0017] The beneficial effects of this utility model are as follows:
[0018] This utility model utilizes a horizontal limiting structure formed between the first half-slot, the second half-slot, and the full-slot bar. This structure allows the inner shell to be easily pulled horizontally out of the outer shell after the full-slot bar is pulled vertically downwards. The replacement of the conductor in the inner shell is convenient and efficient, eliminating the need to disassemble the outer shell cover, reducing the need to disassemble bolts / screws, and eliminating the need for specialized tools. The horizontal extraction replacement method also eliminates the need to consider the influence of the busbar installation height. The inner shell can be disassembled and assembled simply by removing and assembling the tray.
[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description
[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0021] Figure 1This is a schematic diagram of the structure of an embodiment of the present utility model;
[0022] Figure 2 This is a schematic diagram of the fit between the embedded groove and the support plate in an embodiment of this utility model;
[0023] Figure 3 This is an embodiment of the present utility model. Figure 2 Enlarged diagram of point A in the diagram;
[0024] Figure 4 This is a schematic diagram of the outer shell structure of an embodiment of the present utility model;
[0025] Figure 5 This is a schematic diagram of the inner shell structure of an embodiment of the present utility model;
[0026] Figure 6 This is a schematic diagram of the pallet structure according to an embodiment of the present utility model;
[0027] Reference numerals: 1. Outer shell; 2. Outer shell cover; 3. Insulating partition; 4. Half-slot one; 5. Inner shell; 6. Half-slot two; 7. Embedded groove; 8. Through slot for the card strip; 9. Support plate; 10. Full card strip; 11. Inner groove; 12. Insert plate; 13. Spring; 14. Slot; 15. Heat dissipation channel. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0029] Reference Figure 1-6 This utility model embodiment proposes a busbar trunking that is easy to maintain, including a housing 1, a housing cover 2 that is fixedly connected to the top of the housing 1 by screws, and five insulating partitions 3 that are fixedly arranged at equal intervals on the bottom of the interior of the housing 1.
[0030] A semi-slot 4 is formed on the outer side wall of the insulating partition 3. An inner shell 5 is disposed inside the outer shell 1 near the two insulating partitions 3. A conductive sheet is disposed inside the inner shell 5, and the inner shell 5 is precisely fitted between the two insulating partitions 3. The two insulating partitions 3 separate adjacent inner shells 5, achieving insulation protection and providing a limit for the inserted inner shell 5. A second semi-slot 6 is formed on the outer side wall of the inner shell 5 near the first semi-slot 4. An embedded groove 7 is formed at the bottom of the outer shell 1. A slot 8 is provided at the bottom of the interior near the lower part of the first half slot 4 and the second half slot 6. A support plate 9 is provided at the lower part of the inner groove 7. A full locking strip 10 is fixedly provided at the top of the support plate 9. The full locking strip 10 passes through the slot 8 and the outer side wall of the full locking strip 10 matches and fits the inner side wall of the first half slot 4 and the second half slot 6. This allows the full locking strip 10 to pass through the slot 8 and be inserted into the interior of the first half slot 4 and the second half slot 6, thereby limiting the inner shell 5 and preventing the inner shell 5 from shifting in the outer shell 1.
[0031] An inner groove 11 is provided at the bottom of the outer shell 1 near the inner groove 7. A through groove is provided inside the outer shell 1 near the inner groove 7 and the inner groove 11, through which the insert plate 12 can pass. This ensures that a part of the insert plate 12 can be inserted into the slot 14 in the support plate 9, thereby supporting the support plate 9 and preventing the support plate 9 from falling under the action of gravity. The insert plate 12 is slidably connected to the inner wall of the inner groove 11. A spring 13 is provided between the outer wall of the insert plate 12 and the inner wall of the inner groove 11. A slot 14 is provided on one side of the outer wall of the support plate 9 near the insert plate 12. The cross-section of the support plate 9 is L-shaped and the support plate 9 can be inserted into the slot 14, which makes it easy to push the support plate 9 by hand, thereby realizing the movement of the support plate 9 and ensuring that the support plate 9 can be inserted into the slot 14.
[0032] Heat dissipation channels 15 are provided at the bottom of the outer shell 1, the bottom of the insulating partition 3, and the bottom of the outer shell cover 2. The heat dissipation channels 15 on the outer shell 1, the insulating partition 3, and the outer shell cover 2 overlap in the vertical direction to ensure that the heat dissipation channels 15 are connected, thereby allowing air to flow vertically in the heat dissipation channels 15, realizing air flow, and using air flow to carry away more heat to achieve heat dissipation of the busbar trunking.
[0033] The specific implementation method is as follows:
[0034] During the assembly of the busbar trunking, push the insert plate 12 to compress the spring 13 and insert the support plate 9 into the inner groove 7 from bottom to top. Release the insert plate 12, and under the action of the spring 13's rebound force, a part of the insert plate 12 is inserted into the slot 14 to support the support plate 9. The full locking strip 10 on the support plate 9 passes through the locking strip slot 8 and is inserted into the half locking slot 4. A part of the full locking strip 10 is located inside the half locking slot 4, and the other part of the full locking strip 10 protrudes out of the insulating partition 3. At this time, move the second half locking slot 6 on the inner shell 5 downward along the full locking strip 10. The inner shell 5 is positioned and inserted between the two insulating partitions 3 to complete the insertion of multiple inner shells 5. Then, fix the outer shell cover 2 on the top of the outer shell 1.
[0035] When one of the conductors inside the inner shell 5 is damaged and needs to be replaced, push the insert plate 12 to pull it out of the slot 14 on the support plate 9. The support plate 9 moves downward under the action of gravity. The support plate 9 and the full locking strip 10 are pulled out of the outer shell 1. At this time, after the inner shell 5 loses its limit, the inner shell 5 is pulled out horizontally and a new inner shell 5 is inserted horizontally. Finally, the full locking strip 10 is used to limit and fix the inserted inner shell 5.
[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A busbar trunking system that is easy to maintain, characterized in that: Includes the outer casing (1); Five insulating partitions (3) are equally spaced at the bottom of the interior of the outer shell (1); A semi-slot (4) is formed on the outer side wall of the insulating partition (3); An inner shell (5) is located inside the outer shell (1) near the position between adjacent insulating partitions (3); A second half-slot (6) is formed on the outer side wall of the inner shell (5) near the side of the first half-slot (4); An inset groove (7) is formed at the bottom of the outer casing (1); A slot (8) is formed inside the recessed groove (7) at the top, near the position directly below the first half-slot (4) and the second half-slot (6); and A support plate (9) is located directly below the recessed groove (7); A full-length retaining strip (10) welded to the top of the tray (9); An inner groove (11) is formed at the bottom of the outer casing (1) near the inner groove (7); The insert plate (12) slides on the inner wall of the inner groove (11); and A spring (13) is provided between the inner wall of the groove (11) on one side and the outer wall of the insert plate (12) on one side; A slot (14) is provided on the outer wall of one side of the tray (9); A cover (2) is provided on the top of the outer casing (1); A heat dissipation channel (15) is formed through the bottom of the outer shell (1), the bottom of the insulating partition (3), and the bottom of the outer shell cover (2).
2. The busbar trunking system with convenient maintenance according to claim 1, characterized in that: The heat dissipation channels (15) on the outer shell (1), the insulating partition (3), and the outer shell cover (2) coincide in the vertical direction.
3. The busbar trunking system with convenient maintenance according to claim 1, characterized in that: The full card strip (10) passes through the card strip groove (8), and the outer wall of the full card strip (10) matches and fits the inner wall of the first half card groove (4) and the second half card groove (6).
4. The busbar trunking system with convenient maintenance according to claim 1, characterized in that: The tray (9) has an L-shaped cross-section and can be inserted into the slot (14).
5. A busbar trunking system with convenient maintenance according to claim 1, characterized in that: The interior of the outer shell (1) is provided with a through slot for the insert plate (12) to pass through, located between the inner groove (7) and the inner recess (11).
6. The busbar trunking system with convenient maintenance according to claim 1, characterized in that: The inner shell (5) is provided with an electrical conductive sheet inside, and the inner shell (5) is precisely fitted between two insulating partitions (3).