Bus duct splice box and method of assembling the same

Abstract

The application belongs to the technical field of power equipment, and discloses a bus duct plug-in box and an assembling method thereof. The bus duct plug-in box comprises a box body, a circuit breaker, a plug-in piece, a connecting piece and a plug pin. The circuit breaker is arranged in the box body, and the plug pin is arranged on the box body through the plug-in piece. The opposite ends of the connecting piece are respectively detachably connected with the incoming line end of the circuit breaker and the plug-in piece. When the opposite ends of the connecting piece are respectively connected with the incoming line end of the circuit breaker and the plug-in piece, the circuit breaker, the connecting piece, the plug-in piece and the plug pin are sequentially electrically conducted. The bus duct plug-in box can adapt to circuit breakers of different types and specifications, improve the compatibility of the bus duct plug-in box to circuit breakers of different types and specifications, and has the characteristics of simple structure and convenient installation.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, specifically relating to a busbar trunking plug-in box and its assembly method. Background Technology

[0002] A busbar plug-in box is an electrical device used to draw power from the main busbar trunking and distribute it to branch circuit equipment. It employs a plug-in structure to achieve flexible power distribution. Specifically, this device connects to the busbar trunking via a plug-in connection, introducing the main power supply into the box. Switching elements (circuit breakers, knife switches, etc.) inside the box control the on / off switching, and finally, the power is delivered to the corresponding load through output cables. Essentially, a plug-in box is a power distribution unit that can be directly plugged into the busbar trunking to achieve power extraction. Compared to traditional distribution boxes, it has significant advantages in terms of safety and ease of operation.

[0003] Structurally, the busbar plug-in box mainly consists of a casing, circuit breaker, and plug pins. Its core function is to realize the electrical conversion between the busbar copper busbar and the cable, thereby reliably outputting current from the busbar system. Power is introduced into the box from the busbar trunking via the plug pins, then passes through the circuit breaker and is connected to the electrical equipment via cable. When it is necessary to disconnect the power supply or adjust the power supply circuit, the plug-in box can be directly removed from the busbar trunking while energized, making operation flexible and convenient. In the existing technology of plug-in boxes, the internal structure mainly uses cables and bolts to connect the circuit breaker to the plug pins. This solution suffers from inconvenient operation and low efficiency when assembled in a confined space. Summary of the Invention

[0004] The purpose of this invention is to provide a busbar trunking plug box that connects circuit breakers and pins through plug-in components and connectors. On the one hand, it can replace cables to electrically connect circuit breakers and pins, and on the other hand, it can adapt to different types of circuit breakers.

[0005] The following technical solutions are used to achieve the above objectives.

[0006] The first aspect of the present invention provides a busbar trunking plug-in box, the busbar trunking plug-in box including a box body, a circuit breaker, a plug-in component, a connector, and a pin;

[0007] The circuit breaker is disposed in the enclosure, and the pin is disposed on the enclosure via the connector; the two opposite ends of the connector are detachably connected to the input terminal of the circuit breaker and the connector, respectively, and when the two opposite ends of the connector are connected to the input terminal of the circuit breaker and the connector, the circuit breaker, connector, connector and pin are electrically connected in sequence.

[0008] In some embodiments, the connector includes a plurality of phase wire plugs, and the incoming terminal of the circuit breaker, the connector and the pin are respectively configured to correspond one-to-one with the phase wire plugs;

[0009] The busbar duct plug-in box also includes a fixing seat disposed on the box body. The fixing seat is an insulating structure. The fixing seat is provided with an insulating baffle, which divides the fixing seat into multiple fixing positions that are isolated from each other. Each phase wire plug is correspondingly disposed on one of the fixing positions.

[0010] In some embodiments, the busbar junction box further includes a pin socket disposed at the bottom of the box body; the pin socket is provided with a plurality of slots; the pin passes through the slots and is exposed outside the box body; the circuit breaker is disposed inside the box body and suspended above the pin socket, and the mounting base is disposed adjacent to the circuit breaker and connected to the pin socket.

[0011] In some embodiments, the phase wire plug includes a first phase wire plug, a second phase wire plug, and a third phase wire plug arranged sequentially on the mounting base along a first direction, and the slot includes a first slot, a second slot, and a third slot arranged sequentially along a second direction, with the mounting base vertically disposed between the first slot and the second slot; the second phase wire plug extends along a first side of the mounting base to the first slot, the first phase wire plug extends from a second side of the mounting base away from the first side to the second slot, and the third phase wire plug extends from the end of the mounting base away from the first phase wire plug to the third slot.

[0012] In some embodiments, the first phase wire plug, the second phase wire plug, and the third phase wire plug each have at least two bent structures;

[0013] And / or, the second phase wire plug is located at the center of the housing.

[0014] In some embodiments, a support plate is provided inside the enclosure, the support plate is suspended above the socket, and the opposite ends of the support plate are detachably connected to the opposite sides of the enclosure, and the circuit breaker is disposed on the support plate.

[0015] In some embodiments, the pin includes a pin body and a mounting plate connected to the pin body; the mounting plate is supported on the pin socket, the pin body passes through the slot, and the phase wire plug, the mounting plate and the pin socket are all provided with a first mounting hole for fasteners to pass through in sequence.

[0016] In some embodiments, the plug socket is further provided with a fixing post, the fixing post and the first mounting hole are provided on opposite sides of the slot; the side of the mounting plate is provided with a slot, and the fixing post is engaged in the slot; the phase wire plug is provided with a second mounting hole for the fixing post to pass through.

[0017] In some embodiments, the connector further includes a grounding plug and a neutral plug; the grounding plug and the neutral plug are disposed on the side of the housing away from the incoming terminal of the circuit breaker; the socket is provided with a grounding groove and a neutral groove, the grounding plug is inserted into the grounding groove, the neutral plug is inserted into the neutral groove, the grounding groove and the neutral groove are arranged adjacent to each other, and the socket is provided with a partition corresponding to the position between the grounding groove and the neutral groove;

[0018] And / or, the fixing base includes a vertical plate and a support plate disposed on the vertical plate; the stop is a protruding plate disposed on the support plate, and the protruding plate extends along the support plate toward the vertical plate; multiple protruding plates are provided, and the multiple protruding plates are spaced apart along the arrangement direction of the incoming line of the circuit breaker, dividing the support plate into multiple fixed positions that are isolated from each other, and the support plate is disposed opposite to the incoming line of the circuit breaker;

[0019] And / or, the fixing base is provided with a surrounding plate at one end near the plug, the surrounding plate and the fixing base cooperate to form a surrounding groove that is separated from the phase wire plug, and the surrounding groove and the corresponding position of the plug are provided with fixing holes for fastening the fastener.

[0020] In some embodiments, the first end of the connector and the inlet end of the circuit breaker are both provided with a first connection hole for fastening, and the second end of the connector and the plug are both provided with a second connection hole for fastening.

[0021] And / or, the connector is a long strip-shaped sheet structure;

[0022] And / or, the connector is a sheet-like structure.

[0023] A second aspect of the present invention provides a method for assembling a busbar trunking plug-in box, comprising the following steps:

[0024] The circuit breaker is installed on the enclosure; the enclosure is fixed with a connector, and the connector is connected with a pin;

[0025] Based on the circuit breaker model and specifications, and the relative position of the circuit breaker's input terminal to the connector, select the corresponding connector and adjust its position during assembly. Detachably connect the two ends of the connector to the circuit breaker's input terminal and the connector, respectively. At this point, the circuit breaker, connector, connector, and pin are electrically connected in sequence.

[0026] The technical solution provided by this invention has the following advantages and effects:

[0027] 1. This busbar trunking plug-in box uses a segmented structure of plug-in parts and connectors to connect the circuit breaker's inlet terminal and pins. The plug-in parts serve as a fixed structure to connect the pins, while the connectors are detachably connected to the circuit breaker's inlet terminal and plug-in parts at their respective ends. Therefore, during the production and assembly of the busbar trunking plug-in box, it is possible to adapt to different circuit breaker models and specifications by simply replacing or processing the connectors or adjusting their installation positions, based on the specific width, height, and spacing of the inlet terminal of the corresponding circuit breaker model and specification. This improves the compatibility of the busbar trunking plug-in box with different circuit breaker models and specifications. It features a simple structure, standardized wiring, and convenient installation, enabling standardized production.

[0028] 2. By setting up this fixing base and dividing it into multiple fixed positions that are isolated from each other by the stop, the fixed positions are set one by one with the phase wire plug-in. The phase wire plug-in can be directly fixed on the fixed position of the fixing base. That is, the fixing base can serve as a base to support and fix the phase wire plug-in, which facilitates the disassembly and assembly of the phase wire plug-in and the connector and improves assembly efficiency. On the other hand, the phase wire plug-ins can be separated by the stop to insulate each other, thereby solving the problem of insufficient electrical clearance inside the enclosure.

[0029] 3. The fixing base is vertically installed between adjacent first and second slots on the plug socket, so that the fixing base can separate the space above the first and second slots. The second phase wire plug extends from the first side of the fixing base corresponding to the first slot to the first slot, and the first phase wire plug extends from the side of the fixing base corresponding to the second slot to the second slot. Thus, the adjacent first and second phase wire plugs can be separated by the fixing base. The third phase wire plug extends from the end of the fixing base away from the first phase wire plug and wraps around the periphery of the first phase wire plug to the third slot. This allows the three phase wire plugs to be separated and kept away from each other in a limited space by the fixing base while minimizing the length of the phase wire plugs.

[0030] 4. By setting this detachable support plate, the height or thickness of the support plate can be adjusted according to the height of the incoming terminal of the circuit breaker relative to the plug-in component, so as to adjust the height of the circuit breaker's incoming terminal to be compatible with the height of the plug-in component. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the busbar trunking plug-in box according to an embodiment of the present invention.

[0032] Figure 2This is a schematic diagram of the internal structure of the busbar trunking plug box after the box body has been removed, according to an embodiment of the present invention.

[0033] Figure 3 yes Figure 2 Another angle view of the internal structure of the busbar connector box after the box body has been removed.

[0034] Figure 4 This is a schematic diagram of the connection structure of the connector and the socket according to an embodiment of the present invention.

[0035] Figure 5 This is a side view schematic diagram of the connection structure of the connector, the fixing base and the pin socket according to an embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram of the structure of the fixing base according to an embodiment of the present invention.

[0037] Figure 7 yes Figure 6 A top view of the mounting base.

[0038] Figure 8 This is a schematic diagram of the structure of the support plate according to an embodiment of the present invention.

[0039] Figure 9 This is a schematic diagram of the connection structure of the connector and the socket according to an embodiment of the present invention.

[0040] Figure 10 yes Figure 9 A schematic diagram of the connection structure of the connector and socket (with one phase wire plug removed).

[0041] Figure 11 This is a schematic diagram of the pin structure according to an embodiment of the present invention.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Busbar duct plug-in box;

[0044] 1. Enclosure; 11. Support plate; 12. Baffle; 2. Circuit breaker; 21. Incoming terminal; 3. Connector; 31. Phase wire connector; 311. First phase wire connector; 312. Second phase wire connector; 313. Third phase wire connector; 32. Second mounting hole; 33. Grounding connector; 34. Neutral wire connector; 4. Connector; 41. First connecting hole; 42. Second connecting hole; 5. Pin; 51. Pin body; 52. 521. Mounting plate; 53. Slot; 6. Connecting plate; 6. Fixing base; 61. Stop; 62. Vertical plate; 63. Support plate; 64. Enclosing plate; 641. Enclosing groove; 642. Fixing hole; 7. Pin socket; 71. Slot; 711. First slot; 712. Second slot; 713. Third slot; 714. Grounding groove; 715. Neutral wire groove; 72. First mounting hole; 73. Fixing post; 74. Partition. Detailed Implementation

[0045] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0046] 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.

[0047] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the related listed items.

[0048] 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.

[0049] It should be noted that the circuit breaker 2 involved in the busbar trunking plug-in box 100 in this application can be a circuit breaker 2 produced by a conventional manufacturer. The circuit breaker 2 usually includes three incoming terminals 21. Circuit breakers 2 from different manufacturers have different models and specifications. Specifically, in addition to the different frame shapes, circuit breakers 2 of different models and specifications also have different adjacent spacing of the three incoming terminals 21, different widths at the incoming ports, and / or different heights at the incoming ports. In the production and assembly of the busbar trunking plug-in box 100, the differences in the incoming terminals 21 of different models and specifications of circuit breakers 2 will greatly affect the assembly efficiency of the busbar trunking plug-in box 100, resulting in poor compatibility, the need to adapt to many non-standardized custom parts, and complicated and time-consuming assembly.

[0050] This invention provides a busbar trunking plug-in box 100, such as... Figures 1 to 11 As shown, the busbar trunking plug-in box 100 includes a box body 1, a circuit breaker 2, a plug-in component 3, a connector 4, and a plug pin 5.

[0051] The circuit breaker 2 is disposed in the housing 1, and the pin 5 is disposed on the housing 1 through the connector 3; the opposite ends of the connector 4 are detachably connected to the inlet terminal 21 of the circuit breaker 2 and the connector 3 respectively, and when the opposite ends of the connector 4 are in the connected state with the inlet terminal 21 of the circuit breaker 2 and the connector 3 respectively, the circuit breaker 2, connector 4, connector 3 and pin 5 are electrically connected in sequence. Understandably, in this embodiment, the incoming terminal 21 and pin 5 of the circuit breaker 2 are connected instead of a cable using the mating structure of the plug-in 3 and the connector 4. The plug-in 3 and connector 4 are segmented structures. The plug-in 3 serves as a fixed structure connecting the pin 5. The plug-in 3 carries current and is therefore only related to the current of the circuit breaker 2 frame, adapting to all models and specifications of the circuit breaker 2. The connector 4 is detachably connected to the incoming terminal 21 of the circuit breaker 2 and the plug-in 3 at its opposite ends. Therefore, during the production and assembly of the busbar junction box 100, the circuit breaker 2 model and specifications can be selected according to their respective requirements. The specific width, height, and spacing of the inlet terminal 21 of circuit breaker 2 are determined by selecting a connector 4 of appropriate width and thickness. During assembly, the position of the connector 4 is adjusted accordingly, for example, by slightly tilting it to accommodate different spacings, or by cutting a notch at one end of the connector 4 corresponding to the inlet terminal 21 of circuit breaker 2 to accommodate a smaller inlet terminal 21. This allows the inlet terminal 21 of circuit breaker 2 to be smoothly connected to the plug-in 3 through the connector 4 and achieve electrical conduction. Different models and specifications of circuit breakers 2 can be adapted simply by replacing or processing the connector 4, or by adjusting the installation position of the connector 4. This method features a simple structure and convenient installation. Compared to the connection scheme that directly uses an integrated copper busbar to replace the cable, the copper busbar connectors are often only designed for specific models of circuit breakers 2. However, different manufacturers produce different models of circuit breakers 2, resulting in poor compatibility of the busbar trunking plug box 100 with circuit breakers 2 from different manufacturers. This requires the adaptation of many non-standardized custom parts. In this embodiment, the segmented structure of the plug-in component 3 and the connector 4 is used to connect the inlet terminal 21 and the plug 5 of the circuit breaker 2. This achieves a simple structure, standardized wiring, and convenient installation, while also being able to adapt to different models and specifications of circuit breakers 2. This improves the compatibility of the busbar trunking plug box 100 with different models and specifications of circuit breakers 2 and enables standardized production.

[0052] In some embodiments, the connector 3 includes a plurality of phase line plugs 31, and the circuit breaker 2's input terminal 21, the connector 4, and the pin 5 are respectively configured in a one-to-one correspondence with the phase line plugs 31. It can be understood that each input terminal 21, connector 4, phase line plug 31, and pin 5 forms a set of phase line current conduction paths. Multiple sets of phase line current conduction paths can be formed according to actual needs, without any particular limitation. In the prior art, it is generally a three-phase circuit, so three phase line plugs 31 and three connectors 4, and three phase line plugs 31 and three pins 5 can be respectively configured to form three sets of phase line current conduction paths. Furthermore, the inventors discovered that to ensure the insulation of multiple phase wire plugs 31 within the housing 1, the electrical clearance between adjacent phase wire plugs 31 must be at least 23mm to guarantee basic insulation. For higher insulation requirements, the electrical clearance distance needs to be wider. However, the physical dimensions of the housing 1 are strictly limited by the standard interface of the busbar trunking system, and it needs to integrate a large number of electronic components, such as current transformers, voltage sampling circuits, intelligent trip units, and communication modules, resulting in an extremely compact internal space. Under this high-density layout, it is difficult to ensure sufficient safe electrical clearance between multiple high-voltage phase wire plugs 31. Therefore, in this preferred embodiment, the busbar trunking plug box 100 further includes a fixing seat 6 disposed on the housing 1. The fixing seat 6 is an insulating structure. The fixing seat 6 is provided with an insulating stop 61, which divides the fixing seat 6 into multiple isolated fixing positions, with each phase wire plug 31 correspondingly disposed in one of the fixing positions. By setting the fixing base 6 and dividing it into multiple fixed positions that are isolated from each other by the stop 61, the fixed positions are set one-to-one with the phase wire plug-in 31. The phase wire plug-in 31 can be directly fixed on the fixed position of the fixing base 6. That is, the fixing base 6 can serve as a base to support and fix the phase wire plug-in 31, which facilitates the disassembly and assembly of the phase wire plug-in 31 and the connector 4 and improves assembly efficiency. On the other hand, the phase wire plug-in 31 can be separated by the stop 61 to insulate each other, thereby solving the problem of insufficient electrical clearance inside the housing 1.

[0053] In some embodiments, such as Figures 4 to 6As shown, the busbar trunking plug box 100 also includes a plug seat 7 disposed at the bottom of the box body 1; the plug seat 7 has multiple slots 71; the plug 5 passes through the slots 71 and is exposed outside the box body 1; the circuit breaker 2 is disposed inside the box body 1 and suspended above the plug seat 7; the fixing seat 6 is disposed adjacent to the circuit breaker 2 and connected to the plug seat 7. The slots 71 of the plug seat 7 are distributed to fix the plug 5 and separate the plug 5 from each other. By suspending the circuit breaker 2 above the plug seat 7, and coordinating the structure of the fixing seat 6 disposed on the plug seat 7 and adjacent to the circuit breaker 2, the spatial layout can be optimized and the internal structural compactness of the box body 1 can be improved. The position of the fixing seat 6 relative to the circuit breaker 2 and the plug seat 7 also facilitates the support and fixation of the phase wire plug 31, and facilitates the connection between the phase wire plug 31 and the circuit breaker 2, extending the plug 5 to the plug seat 7. The circuit breaker 2 is fixed in place. One end of the phase wire plug 31 extends upward along the fixing base 6 to the top of the fixing base 6 and is positioned opposite to the incoming terminal 21 of the circuit breaker 2. This facilitates the disassembly and assembly of the phase wire plug 31 and the connector 4, improving assembly efficiency. The other end of the phase wire plug 31, which is connected to the pin 5, extends downward along the fixing base 6 to the slot 71 of the pin seat 7, so that the pin 5 connected at this end passes through the slot 71. This improves the structural compactness while ensuring a smooth connection between the incoming terminal 21 of the circuit breaker 2, the connector 4, the phase wire plug 31, and the pin 5.

[0054] In some embodiments, the phase wire plug 31 includes a first phase wire plug 311, a second phase wire plug 312, and a third phase wire plug 313 arranged sequentially on the fixing base 6 along a first direction. The slot 71 includes a first slot 711, a second slot 712, and a third slot 713 arranged sequentially along a second direction, and the fixing base 6 is vertically disposed between the first slot 711 and the second slot 712. The second phase wire plug 312 extends from a first side of the fixing base 6 to the first slot 711, the first phase wire plug 311 extends from a second side of the fixing base 6 away from the first side to the second slot 712, and the third phase wire plug 313 extends from the end of the fixing base 6 away from the first phase wire plug 311 to the third slot 713. It should be noted that the first direction and the second direction can be mutually perpendicular or intersecting. Specifically, the first direction can be the width direction of the housing 1, and the second direction can be the length direction of the housing 1. Understandably, by vertically positioning the fixing base 6 between adjacent first slots 711 and second slots 712 on the plug socket 7, the fixing base 6 can separate the space above the first slots 711 and second slots 712. The first and second sides of the fixing base 6 are opposite sides along a first direction. Therefore, the second phase wire plug-in 312 extends from the first side of the fixing base 6 corresponding to the first slot 711 to the first slot 711, and the first phase wire plug-in 311 extends from the fixing base 6 away from the second phase wire plug-in 312 and corresponding to the second slot 712 to the second slot 712. This allows the adjacent first phase wire plug-in 311 and second phase wire plug-in 312 to be separated by the fixing seat 6, extending from both sides of the fixing seat 6 to the two slots. The third phase wire plug-in 313 extends from the end of the fixing seat 6 away from the first phase wire plug-in 311 and wraps around the periphery of the first phase wire plug-in 311 to the third slot 713. The end of the fixing seat 6 refers to the end away from the first phase wire plug-in 311. Thus, while minimizing the length of the phase wire plug-in 31, the three phase wire plug-ins 31 can be separated and kept away from each other in a limited space by the fixing seat 6.

[0055] In some embodiments, such as Figure 6As shown, the fixing base 6 includes a vertical plate 62 and a support plate 63 disposed on the vertical plate 62; the stop 61 is a protruding plate disposed on the support plate 63, and the protruding plate extends along the support plate 63 toward the vertical plate 62; multiple protruding plates are provided, and the multiple protruding plates are spaced apart along the arrangement direction of the incoming end 21 of the circuit breaker 2, dividing the support plate 63 into multiple fixed positions that are isolated from each other, and the support plate 63 is disposed opposite to the incoming end 21 of the circuit breaker 2. Specifically, one end of the support plate 63 is connected to the vertical plate 62 so that the support plate 63 is suspended on the vertical plate 62. The protruding plate extends sequentially from the side of the support plate 63 away from the vertical plate 62 to the top of the support plate 63 and the bottom of the vertical plate 62. The support plate 63 is located at the assembly position of the phase wire plug 31 and the connector 4, so the support plate 63 can be set to a larger width. Since the vertical plate 62 is located between the first slot 711 and the second slot 712, its thickness needs to be smaller. Therefore, by suspending the support plate 63 below, sufficient space can be formed on the support plate 63 to facilitate the connection of the phase wire plug 31 and the connector 4, and it can also avoid obstructing the insertion of the pin 5 into the slot 71. There can be two protruding plates, thereby dividing the space on the support plate 63 into three fixed positions. The support plate 63 is set opposite to the incoming terminal 21 of the circuit breaker 2, and the three fixed positions on the support plate 63 correspond one-to-one with the three incoming terminals 21 of the circuit breaker 2.

[0056] In some embodiments, such as Figure 6 and Figure 7 As shown, the mounting base 6 has a surrounding plate 64 at one end near the plug 7. The surrounding plate 64 and the mounting base 6 cooperate to form a surrounding groove 641 that is separated from the phase wire plug 31. The surrounding groove 641 and the corresponding position of the plug 7 are provided with fixing holes 642 for fastening fasteners. The fasteners, such as screws, bolts or pins, can be sequentially inserted into the fixing holes 642 in the surrounding groove 641 and the fixing holes 642 in the plug 7 to lock the mounting base 6 onto the plug 7, and are easy to disassemble. By separating the fasteners from the phase wire plug 31 by the surrounding plate 64, it is possible to effectively prevent the fasteners from contacting the phase wire plug 31 and causing a short circuit. The enclosing groove 641 can be provided with multiple fixing holes 642, such as two holes 642. The two fixing holes 642 are separated by a protruding plate extending into the enclosing groove 641. The plug seat 7 is adapted to have multiple fixing holes 642. The fixing seat 6 is securely locked to the plug seat 7 using multiple fasteners, such as two fasteners. No particular restrictions are imposed here. The structure of the fixing seat 6 and plug seat 7 is designed for easy disassembly. Multiple fixing seats 6 of different models and specifications can also be used, each model and specification corresponding to a phase spacing, to accommodate different models and specifications of circuit breakers 2, further improving the compatibility of the busbar trunking plug box 100 with different models and specifications of circuit breakers 2.

[0057] In some embodiments, such as Figure 4 and Figure 9 As shown, the first phase wire plug-in 311, the second phase wire plug-in 312, and the third phase wire plug-in 313 each have at least two bending structures to extend to the second slot 712, the first slot 711, and the third slot 713, respectively. The bending structure includes a vertical bending structure and a horizontal bending structure. In the vertical bending structure, the phase wire plug-in 31 is placed on the worktable of the bending machine with its edge perpendicular to the worktable surface. Then, it is pressed down by the upper die or pushed by the side block to bend the sheet metal in its thickness direction. In the horizontal bending structure, the phase wire plug-in is placed flat and bent by the die, such as by a right-angle bend. This allows the phase wire plug-in 31 to extend from the top of the upper fixed seat 6 downward to the bottom and then to the slot 71 of the plug seat 7. The specific number of bends and angles can be set according to the actual situation and are not particularly limited here.

[0058] In some embodiments, the second phase wire plug-in 312 is located at the center of the enclosure 1 to balance the weight of internal core components such as the circuit breaker 2, effectively avoiding the problem of unstable installation of the busbar trunking plug box 100 due to the shift of the center of gravity.

[0059] In some embodiments, such as Figure 2 and Figure 8As shown, a support plate 11 is provided inside the housing 1. The support plate 11 is suspended above the plug socket 7, and the opposite ends of the support plate 11 are detachably connected to the opposite sides of the housing 1. The circuit breaker 2 is mounted on the support plate 11. Understandably, by providing this detachable support plate 11, the height or thickness of the support plate 11 can be adjusted according to the height of the inlet end 21 of the circuit breaker 2 relative to the plug-in 3, so that the height of the inlet end 21 of the circuit breaker 2 is adapted to the height of the plug-in 3. Preferably, the surface of the support plate 11 is recessed downwards towards the circuit breaker 2 to form a U-shaped groove structure. Specifically, there can be multiple support plates 11, each with a different U-shaped groove depth. Thus, while keeping the thickness of the support plate 11 constant, the depth of the U-shaped groove can be changed by replacing the support plate 11 to adapt to circuit breakers 2 with different height requirements, reducing the overall weight of the circuit breaker 2 and the support plate 11. Furthermore, in other embodiments, the method of adjusting the support plate 11 is not limited to the above-described method. Other methods that can adjust the height of the support plate 11 are also applicable. For example, stepped holes of different heights can be provided on opposite sides of the housing 1 along the height direction. The height of the circuit breaker 2 can be adjusted by adjusting the support plate 11 to be fixedly connected to the holes of different heights. The hole can be a single hole or a slide groove structure, with stop holes provided at different heights of the slide groove. The edge of the support plate 11 slides to different stop holes for fixing. Specifically, in this embodiment, steps are provided on opposite sides of the housing 1. Specifically, it can be formed by welding an inverted L-shaped plate to the side wall of the housing 1. The opposite ends of the support plate 11 and the two steps are provided with fastening holes for fastener locking to fit the holes. The support plate 11 is fixedly connected to the steps by fasteners such as screws, bolts, or pins, which facilitates disassembly and replacement.

[0060] In some embodiments, such as Figure 8 As shown, the end of the bearing plate 11 away from the incoming line end 21 of the circuit breaker 2 is provided with a baffle 12. The baffle 12 separates the other components in the housing 1 from the plug-in positions of the phase wire plug 31 and the plug socket 7, thereby further improving the electrical safety performance.

[0061] In some embodiments, such as Figure 3As shown, both the first end of the connector 4 and the input end 21 of the circuit breaker 2 are provided with a first connecting hole 41 for fastening, and both the second end of the connector 4 and the plug-in 3 are provided with a second connecting hole 42 for fastening. Understandably, the connector 4 serves as the core structural component for the electrical connection between the input end 21 of the circuit breaker 2 and the plug-in 3. The first end of the connector 4 is aligned and assembled with the input end 21 of the circuit breaker 2 through the corresponding coaxial first connecting hole 41, and secured by fasteners, forming a stable input connection. Similarly, the second end of the connector 4 is aligned and assembled with the plug-in 3 through the corresponding coaxial second connecting hole 42, forming a reliable output connection. This ensures reliable mechanical fixation and electrical conduction of the input end 21 of the circuit breaker 2, the connector 4, and the plug-in 3, and facilitates disassembly. Simply loosening the fasteners allows the connector 4 to be separated from the input end 21 and the plug-in 3 of the circuit breaker 2, making the operation simple. The fastener can be a bolt, screw, or pin, etc. In addition, the connector 4 can also be fixed to the inlet terminal 21 of the circuit breaker 2 and the plug-in 3 by means of clamps or magnetic attraction, etc., without any special restrictions.

[0062] In some embodiments, the connector 4 is a long strip-shaped sheet structure, so that the incoming terminal 21 of the circuit breaker 2 and the connector 4 are in surface contact, and the plug-in 3 and the connector 4 are also in surface contact, thereby increasing the contact area, improving the current conduction efficiency, and reducing heat generation.

[0063] In some embodiments, the plug-in 3 has a sheet-like structure, which further increases the contact area with the connector 4, improves current conduction efficiency, and reduces heat generation.

[0064] In some embodiments, such as Figures 9 to 11 As shown, the plug 5 includes a plug body 51 and a mounting plate 52 connected to the plug body 51; the mounting plate 52 is supported on the plug socket 7, and the plug body 51 passes through the slot 71. The phase wire plug 31, the mounting plate 52, and the plug socket 7 are all provided with first mounting holes 72 for fasteners to pass through sequentially. It can be understood that fasteners such as screws, bolts, or pins can be passed through the first mounting holes 72 of the phase wire plug 31, the mounting plate 52, and the plug socket 7 sequentially to lock the phase wire plug 31 and the mounting plate 52 onto the plug socket 7, and facilitate disassembly.

[0065] In some embodiments, the plug-in 7 is further provided with a fixing post 73, the fixing post 73 and the first mounting hole 72 are disposed on opposite sides of the slot 71; the side of the mounting plate 52 is provided with a slot 521, and the fixing post 73 is engaged in the slot 521; the phase wire plug-in 31 is provided with a second mounting hole 32 for the fixing post 73 to pass through. When the fastener is locked in the first mounting hole 72, the engagement of the fixing post 73 with the slot 521 of the mounting plate 52 and the second mounting hole 32 of the phase wire plug-in 31 effectively prevents the phase wire plug-in 31 from twisting during installation, causing the hole position to shift. Since the end of the second phase wire plug-in 312 connected to the plug-in 7 is shorter, the second mounting hole 32 of the second phase wire plug-in 312 is a notch at the end to engage with the corresponding fixing post 73. Specifically, in this embodiment, the first mounting hole 72 is disposed at the end of the phase wire plug-in 31, and the second mounting hole 32 is disposed on the side of the slot 71 opposite to the first mounting hole 72.

[0066] In some embodiments, such as Figure 11 As shown, the mounting plate 52 is provided with a vertical connecting plate 53. Both the connecting plate 53 and the insert body 51 are provided with two threaded holes. Two fasteners are inserted through the threaded holes of the connecting plate 53 and the insert body 51 to fasten the connecting plate 53 and the insert body 51 and prevent relative torsion or displacement between the two.

[0067] In some embodiments, such as Figure 2 As shown, the connector 3 also includes a grounding plug 33 and a neutral plug 34; the grounding plug 33 and the neutral plug 34 are located on the side of the housing 1 away from the incoming terminal 21 of the circuit breaker 2; thus, the grounding plug 33 and the neutral plug 34 are separated from the phase plug 31 as much as possible to ensure a safe electrical clearance and reduce the length of the parts. The socket 7 is also provided with a grounding groove 714 that mates with the grounding plug 33 and a neutral groove 715 that mates with the neutral plug 34. The grounding groove 714 and the neutral groove 715 are arranged adjacent to each other, and the socket 7 is provided with a partition 74 corresponding to the position between the grounding groove 714 and the neutral groove 715. The partition 74 is made of insulating material and can separate the grounding plug 33 and the neutral plug 34, thereby solving the problem of insufficient electrical clearance between the grounding plug 33 and the neutral plug 34.

[0068] In some embodiments of the present invention, a method for assembling a busbar trunking plug-in box 100 is also provided, comprising the following steps:

[0069] The circuit breaker 2 is installed on the enclosure 1; wherein the enclosure 1 is fixed with a connector 3, and the connector 3 is connected with a pin 5;

[0070] Based on the model and specifications of circuit breaker 2, and the relative position of the incoming terminal 21 of circuit breaker 2 to the plug-in 3, select the corresponding connector 4. During assembly, adjust the position of connector 4 so that the two opposite ends of connector 4 are detachably connected to the incoming terminal 21 of circuit breaker 2 and the plug-in 3, respectively. At this point, circuit breaker 2, connector 4, plug-in 3, and pin 5 are electrically connected in sequence. This assembly method features standardized wiring, convenient installation, and adaptability to different models and specifications of circuit breaker 2, improving the compatibility of busbar trunking plug-in box 100 with different models and specifications of circuit breaker 2, and establishing standardized production.

[0071] The above embodiments are not an exhaustive list based on the present invention, and there may be many 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 busbar duct plug-in box, characterized in that, The busbar duct plug-in box includes a box body, a circuit breaker, plug-in components, connectors, and pins; The circuit breaker is installed in the enclosure, and the pin is installed on the enclosure via the connector; the two opposite ends of the connector are detachably connected to the input terminal of the circuit breaker and the connector, respectively, and when the two opposite ends of the connector are connected to the input terminal of the circuit breaker and the connector, the circuit breaker, connector, connector and pin are electrically connected in sequence. The connector includes multiple phase wire plugs, and the circuit breaker's incoming terminal, the connector, and the pin are respectively configured to correspond one-to-one with the phase wire plugs; The busbar duct plug-in box also includes a fixing seat disposed on the box body. The fixing seat is an insulating structure. The fixing seat is provided with an insulating baffle, which divides the fixing seat into multiple fixing positions that are isolated from each other. Each phase wire plug is correspondingly disposed on one of the fixing positions. The busbar duct plug-in box also includes a plug socket located at the bottom of the box; the plug socket has multiple slots; the plugs pass through the slots and are exposed outside the box; the circuit breaker is located inside the box and suspended above the plug socket; the fixing base is located adjacent to the circuit breaker and connected to the plug socket. The phase wire plug includes a first phase wire plug, a second phase wire plug, and a third phase wire plug arranged sequentially from front to back on the mounting base in a front-to-back direction. The slot includes a first slot, a second slot, and a third slot arranged sequentially in a left-to-right direction, and the mounting base is vertically disposed between the first slot and the second slot. The second phase wire plug extends from the left side of the mounting base to the first slot, the first phase wire plug extends from the right side of the mounting base to the second slot, and the third phase wire plug extends from the rear end of the mounting base away from the first phase wire plug to the third slot. The fixing base includes a vertical plate and a support plate disposed on the vertical plate; the stop is a protruding plate disposed on the support plate, and the protruding plate extends along the support plate toward the vertical plate; multiple protruding plates are provided, and the multiple protruding plates are spaced apart along the multiple incoming terminals of the circuit breaker, dividing the support plate into multiple fixed positions that are isolated from each other, and the support plate is disposed opposite to the incoming terminals of the circuit breaker.

2. The busbar trunking plug-in box as described in claim 1, characterized in that, The first phase wire plug-in, the second phase wire plug-in, and the third phase wire plug-in each have at least two bent sections.

3. The busbar trunking plug-in box as described in claim 1, characterized in that, The second phase wire plug is located at the center of the enclosure.

4. The busbar trunking plug-in box as described in claim 1, characterized in that, The enclosure is provided with a support plate, which is suspended above the socket. The opposite ends of the support plate are detachably connected to the opposite sides of the enclosure. The circuit breaker is mounted on the support plate.

5. The busbar trunking plug-in box as described in claim 1, characterized in that, The plug includes a plug body and a mounting plate connected to the plug body; the mounting plate is supported on the plug socket, the plug body passes through the slot, and the phase wire plug, the mounting plate and the plug socket are all provided with a first mounting hole for fasteners to pass through in sequence; the plug socket is also provided with a fixing post, the fixing post and the first mounting hole are provided on opposite sides of the slot; the side of the mounting plate is provided with a slot, and the fixing post is engaged in the slot; the phase wire plug is provided with a second mounting hole for the fixing post to pass through.

6. The busbar trunking plug-in box as described in claim 1, characterized in that, The connector also includes a grounding plug and a neutral plug; the grounding plug and the neutral plug are located on the side of the housing away from the incoming terminal of the circuit breaker; the socket is provided with a grounding groove and a neutral groove, the grounding plug is inserted into the grounding groove, the neutral plug is inserted into the neutral groove, the grounding groove and the neutral groove are arranged adjacent to each other, and the socket is provided with a partition corresponding to the position between the grounding groove and the neutral groove.

7. The busbar trunking plug-in box as described in claim 1, characterized in that, The mounting base has a surrounding plate at one end near the plug, and the surrounding plate cooperates with the mounting base to form an enclosing groove that is separated from the phase wire plug. The bottom of the enclosing groove and the corresponding position of the plug are provided with fixing holes for fastening the fasteners.

8. The busbar trunking plug-in box as described in any one of claims 1-7, characterized in that, Both the first end of the connector and the inlet end of the circuit breaker are provided with a first connection hole for fastening the fastener, and both the second end of the connector and the plug are provided with a second connection hole for fastening the fastener. And / or, the connector is a long strip-shaped sheet structure; And / or, the connector is a sheet-like structure.

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