Cable branch box convenient to maintain

Abstract

The invention relates to the technical field of power transmission and distribution, and discloses a cable branch box convenient to maintain, an insulated gate bipolar transistor (IGBT) chip, a module and other core power electronic components are integrated in the cable branch box, the cable branch box comprises a box body, a switch device, a grounding device and a plurality of cables, and the switch device, the grounding device and the cables are arranged in the box body. A plurality of threading holes are formed in the distributor plate, the cables are arranged in the threading holes in a penetrating manner, wire numbers corresponding to the threading holes are arranged on the distributor plate, and the wire numbers correspond to wiring points on the switch device. According to the cable branch box, the cable is arranged in the threading hole in a penetrating manner, and the cable distributing plate slides up and down along with the box door and clamps or releases the cable when the box door is opened and closed, so that the effects of facilitating maintenance personnel to quickly identify the cable to be maintained and preventing the cable from being wound are achieved, the maintenance efficiency of the cable branch box is improved, and the risk of loosening of a cable joint is reduced.

Description

Technical Field

[0001] This application relates to the technical field of power transmission and distribution, and in particular to a cable branch box that is easy to maintain. Background Technology

[0002] Cable distribution boxes play a crucial role in urban power distribution networks. As key nodes, they integrate core power electronic components such as Insulated Gate Bipolar Transistor (IGBT) chips and modules, undertaking the functions of cable distribution and connection. With the accelerating pace of urbanization, the complexity of urban power grids is increasing. The proliferation of buildings and rising electricity demand in cities makes the power grid layout more complex, highlighting the increasingly important role of cable distribution boxes. They rationally allocate power resources, ensuring stable power supply in various areas. However, the increasing complexity of urban power grids and the growing number of cables within distribution boxes present numerous challenges to their installation and maintenance.

[0003] In existing technologies, to facilitate installation and subsequent maintenance, cables inside the enclosure are usually left with a considerable amount of slack. These cables are typically secured using simple cable ties or wire clips. Cable ties are a common method, allowing multiple cables to be bundled together, making them appear neater to some extent. Wire clips, on the other hand, secure the cables by clipping them into slots. These methods can temporarily organize the cable bundles, giving the cables a relatively neat arrangement within the enclosure.

[0004] However, these conventional methods in existing technologies have significant drawbacks. While using cable ties or clips to secure cables can temporarily organize the cable bundles, cutting the ties is necessary when replacing or moving individual cables, making the process cumbersome. Furthermore, these methods cannot link cable identification with their physical location. Because redundant cables within the limited space of the enclosure are bent and coiled, they easily become tangled and piled up, forming a messy bundle. This not only affects aesthetics but also restricts operating space during maintenance, making it difficult for maintenance personnel to quickly and accurately identify and remove cables for repair, severely reducing maintenance efficiency. It may even lead to loosening of adjacent cable joints due to misoperation or pulling, causing secondary faults. Therefore, improvements are needed. Summary of the Invention

[0005] To improve the maintenance efficiency of cable branch boxes, this application provides a cable branch box that is easy to maintain.

[0006] The cable branch box provided in this application adopts the following technical solution for easy maintenance: A cable distribution box that is easy to maintain includes a box body, a switch device, a grounding device and several cables installed in the box body. The box body is provided with a distribution plate with several through holes. The cables are passed through the through holes. The distribution plate is provided with wire numbers corresponding to each through hole. The wire numbers correspond to the connection points on the switch device.

[0007] By adopting the above technical solution, during wiring, the cables are first threaded through the through-holes on the distribution board, ensuring that the wire number of each cable through the through-hole corresponds one-to-one with the connection point to which the cable will be connected. Then, the cables are connected to the switchgear and grounding devices. The cables are systematically separated and fixed in each through-hole, effectively preventing cables from tangling and piling up inside the enclosure. This makes the cable layout neater, improving the utilization of space within the enclosure and facilitating quick identification and access to specific cables by maintenance personnel. When a switchgear malfunctions, the corresponding cable can be quickly located by checking the connection points and wire numbers on the switchgear, reducing confusion and the risk of misoperation during maintenance. Simultaneously, the initial positioning of the cables through the through-holes facilitates easy cable pulling during maintenance, significantly improving maintenance efficiency.

[0008] Optionally, the enclosure includes a side panel, a bottom plate, and a door. The cable distribution plate is slidably disposed in the enclosure in a vertical direction. A connecting rod is rotatably disposed on the door. The other end of the connecting rod is rotatably disposed on the cable distribution plate. The connecting rod is located on the side of the cable distribution plate near the bottom plate. The wall of the cable threading hole is in contact with the outer wall of the cable.

[0009] By adopting the above technical solution, during wiring, the cable is threaded through the through hole and then pulled to the side of the distribution plate away from the bottom plate. When the box door is closed, the end of the connecting rod connected to the distribution plate rotates away from the bottom plate, thereby pushing the distribution plate away from the bottom plate. The contact between the hole wall and the outer wall of the cable provides initial fixation and guidance, allowing the reserved cable to be pushed to the side of the distribution plate away from the bottom plate. The weight of the cable is borne by the distribution plate, so that the weight of the cable is not entirely applied to the connection between the cable and the switch device. This reduces the possibility that the cable's own weight will pull the cable downward when the cable distribution box is vibrated, causing the cable to detach from the switch device. The sliding design of the distribution plate accommodates the cable's slack, avoids excessive bending or pulling of the cable, reduces the risk of loose cable joints, and improves the stability of the connection between the cable and the switch device. When the cabinet door is opened, the end of the connecting rod that is connected to the distribution plate will rotate towards the side closer to the bottom plate, thereby causing the distribution plate to slide towards the side closer to the bottom plate, thus unfolding the cables piled on the distribution plate, making the route of each cable clearly visible, which makes it easier to identify and inspect the wires when the cabinet door is opened.

[0010] Optionally, the cable distribution plate includes a fixing part and a base. The fixing part is slidably mounted on the base. The cable threading hole is opened on the base. The fixing part has fixing holes that correspond one-to-one with the cable threading hole. A clamping plate is provided on the wall of the fixing hole. The clamping plate extends into the cable threading hole. An elastic element is provided on the fixing part. The elastic element can drive the fixing part away from the base. A push block is provided on the side plate. The push block has a guide slope. The guide slope is used to guide the fixing part closer to the base when the cabinet door is closed. When the fixing part is close to the base, the cable is clamped between the clamping plate and the wall of the cable threading hole.

[0011] By adopting the above technical solution, an automatic cable clamping and release mechanism is achieved through the combination of a fixing part, a clamping plate, and an elastic element. When the box door is closed, the guide slope of the push block pushes the fixing part to compress the elastic element, causing the clamping plate to tightly clamp the cable in the cable hole, ensuring stable cable fixation and preventing displacement caused by vibration or external force. This allows the cable weight to be stably borne by the distribution plate, further reducing the possibility of cable joint loosening. When the box door is opened, the elastic element drives the fixing part away from the distribution plate, at which point the clamping plate releases the cable, facilitating quick cable removal, placement, or adjustment. This eliminates the reliance on cable ties or clips, eliminating the need to cut them, greatly simplifying maintenance procedures, improving the efficiency and flexibility of cable maintenance, and reducing tool requirements.

[0012] Optionally, both the door and the side panel are provided with mounting cylinders, and a rotating shaft is slidably arranged in the mounting cylinders of the door and the side panel. The rotating shaft is fixed in the horizontal direction relative to the mounting cylinder on the side panel. The mounting cylinder of the door is rotatably sleeved on the rotating shaft. A limiting block is provided in the circumferential direction of the rotating shaft. An installation groove is opened on the rotating shaft. The limiting block is slidably arranged in the installation groove. A driving component is provided in the installation groove. The driving component is used to drive the limiting block to extend out of the installation groove. A limiting groove is opened on the inner wall of the mounting cylinder of the door for the limiting block to extend into. When the door is opened, the limiting block extends into the limiting groove.

[0013] By adopting the above technical solution, when maintenance personnel open the cabinet door for repairs, the limiting block extends into the limiting groove to lock the opening angle of the cabinet door, making it difficult for the door to rotate or close arbitrarily, thus reducing the risk of accidental injury to maintenance personnel and ensuring their safety. This improves the stability of the cabinet door during maintenance, reduces interference during the maintenance process, facilitates repairs, and enhances the user experience by enabling locking without additional operation.

[0014] Optionally, multiple limiting blocks are provided, multiple mounting slots are provided, and a guide slope is provided on the limiting block. The guide slope is used to guide the limiting block to move into the mounting slot when the box door is opened.

[0015] By adopting the above technical solution, when the cabinet door is opened to different angles, the limiting block extends into different limiting grooves to limit the opening angle of the cabinet door. This allows maintenance personnel to lock the cabinet door at different angles according to different maintenance needs, improving the flexibility of the cabinet door opening and making it less likely for the cabinet door to shake or interfere with the maintenance process. The guide slope allows the limiting block to retract smoothly into the mounting groove during the opening of the cabinet door to different angles, reducing friction and resistance and ensuring smooth opening of the cabinet door. This improves the durability and ease of operation of the cable branch box, maintaining long-term stable performance in scenarios where the cabinet door is frequently opened for maintenance.

[0016] Optionally, a reset ring groove is also provided on the inner wall of the mounting cylinder of the box door. The reset ring groove is located on the side of the limiting groove away from the bottom plate. The limiting groove is connected to the reset ring groove. The limiting block is provided with a reset inclined surface. The reset inclined surface is used to guide the limiting block into the mounting groove when it slides in the direction of the rotation axis toward the bottom plate.

[0017] By adopting the above technical solution, when the cabinet door needs to be closed after maintenance, the rotation axis can be slid away from the bottom plate first, so that all the limit blocks enter the reset ring groove. At this time, the limit blocks no longer obstruct the rotation of the mounting cylinder on the cabinet door relative to the rotation axis, that is, the cabinet door can rotate relative to the rotation axis, thus facilitating the closing of the cabinet door. During the closing process, the limit blocks rotate in the reset ring groove. Then, after the cabinet door is completely closed, the rotation axis is slid closer to the bottom plate. During the sliding process, the groove wall of the reset ring groove abuts against the reset inclined surface, causing the limit blocks to retract into the mounting groove. When the rotation axis slides to the bottommost position in the direction closer to the bottom plate, the limit blocks are located at the initial position on the same horizontal line as the limit groove, thus facilitating the next opening of the cabinet door by the limit blocks extending into the limit groove to fix the angle of the cabinet door.

[0018] Optionally, both ends of the rotating shaft are provided with limiting rings, and the diameter of the limiting rings is larger than the diameter of the rotating shaft.

[0019] By adopting the above technical solution, the limiting ring effectively prevents the rotating shaft from accidentally detaching from the mounting cylinder, ensuring the stability and safety of the rotating shaft during operation. This reduces the risk of failure caused by component detachment, extends the service life of the enclosure, and maintains the overall integrity of the enclosure.

[0020] Optionally, the side plate is provided with several heat dissipation holes.

[0021] By adopting the above technical solution, the heat dissipation holes promote air convection within the enclosure, effectively dissipating the heat generated by the switching devices and cables during operation, and preventing overheating that could lead to equipment aging or malfunction. This improves the reliability and service life of the cable branch box, reduces maintenance needs caused by overheating, and maintains the stability of the environment inside the box.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By sliding a distribution plate inside the enclosure, cables are threaded through the holes on the distribution plate during wiring, making it less prone to tangling. During maintenance, the cables that need to be repaired can be accurately identified by wire number, thus improving maintenance efficiency. 2. When the box door is closed, the connecting rod drives the distribution plate to slide away from the bottom plate, thereby accumulating the reserved length of the cable on the distribution plate. This reduces the weight of the cable at the connection between the cable and the switch device, reducing the risk of the cable joint loosening. After the box door is closed, the push block pushes the fixing part closer to the distribution plate, so that the cable is clamped between the clamping plate and the wall of the wire hole, which enhances the fixing effect of the distribution plate on the cable when the box door is closed. 3. When the cabinet door is opened to different angles, the limiting block extends into different limiting grooves to fix the opening angle of the cabinet door, so as to meet the different maintenance needs of maintenance personnel. For example, when it is necessary to inspect the switch device deep in the cabinet, the cabinet door can be opened to the maximum angle. When it is necessary to inspect the cable inside the cabinet near the cabinet door, the cabinet door only needs to be opened to a smaller angle. Moreover, the cabinet door is not easy to rotate at will and interfere with the maintenance process, thus ensuring maintenance efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is an exploded structural diagram used to illustrate the threading hole in the embodiments of this application.

[0025] Figure 3 This is a partial exploded structural diagram used to illustrate the clamping plate in an embodiment of this application.

[0026] Figure 4 This is a partial cross-sectional structural diagram of the limiting block used in an embodiment of this application.

[0027] Figure 5 This is a partial cross-sectional structural diagram used to illustrate the reset ring groove in an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures: 1. Enclosure; 11. Side panel; 111. Push block; 112. Guide slope; 113. Heat dissipation hole; 12. Base plate; 13. Enclosure door; 131. Connecting rod; 2. Switch device; 3. Cable; 4. Distribution plate; 41. Wire hole; 42. Wire number; 43. Fixing part; 431. Fixing hole; 432. Clamping plate; 433. Elastic element; 44. Base; 5. Mounting cylinder; 51. Limiting groove; 52. Reset ring groove; 6. Rotating shaft; 61. Limiting block; 611. Guide slope; 612. Reset slope; 62. Mounting groove; 621. Drive component; 63. Limiting ring. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a cable branch box that is easy to maintain.

[0031] Reference Figure 1 A cable distribution box for easy maintenance includes a box body 1, a switch device 2, a grounding device (not shown in the figure) and several cables 3 installed in the box body 1, and a distribution plate 4 inside the box body 1. The distribution plate 4 works in conjunction with the switch device 2, the grounding device and the cables 3 to organize the cables 3 in an orderly manner, achieving the beneficial effects of orderly cable bundling, quick access and placement and accurate identification of the cables 3.

[0032] Reference Figure 1 The enclosure 1 includes a side panel 11, a bottom panel 12, and a door 13. Several heat dissipation holes 113 are provided on the side panel 11. The heat dissipation holes 113 can be round, square, or other shapes. The heat dissipation holes 113 can ensure air circulation inside the enclosure 1, reduce the temperature inside the enclosure 1, and protect the cables 3 and other equipment from overheating.

[0033] Reference Figure 2 The distribution plate 4 has several through holes 41, through which the cable 3 is threaded. The through holes 41 can be circular, and their size is set according to the thickness of the cable 3 to ensure that the cable 3 can pass through smoothly with a certain gap. The through holes 41 can also be square or other shapes, as long as they can achieve the function of threading the cable 3.

[0034] Reference Figure 2 The distribution plate 4 is also equipped with a wire number 42 corresponding to each wire hole 41. The wire number 42 can be printed on the distribution plate 4 or set by means of a sticker. The wire number 42 corresponds to the wiring point on the switch device 2, so that maintenance personnel can quickly find the corresponding wiring point of the cable 3 according to the wire number 42.

[0035] Reference Figure 2The dividing plate 4 is slidably mounted vertically inside the housing 1. This sliding arrangement is achieved by setting a guide rail on the inner wall of the housing 1 and setting a slider on the dividing plate 4 that cooperates with the guide rail. A connecting rod 131 is rotatably mounted on the door 13, and the other end of the connecting rod 131 is rotatably mounted on the dividing plate 4. The connecting rod 131 is located on the side of the dividing plate 4 near the bottom plate 12.

[0036] Reference Figure 2 When the cabinet door 13 is opened or closed, the connecting rod 131 will cause the cable distribution plate 4 to slide up and down inside the cabinet 1, which facilitates the unfolding of the cable 3 or the accumulation of the cable 3 on the cable distribution plate 4. The wall of the cable hole 41 contacts the outer wall of the cable 3, which can initially fix the cable 3 and reduce the shaking of the cable 3.

[0037] Reference Figure 2 and Figure 3 The cable divider 4 includes a fixing part 43 and a base 44. The fixing part 43 is slidably mounted on the base 44 in a horizontal direction. The wire number 42 is set on the fixing part 43. The wire hole 41 is opened on the base 44. The fixing part 43 has fixing holes 431 that correspond one-to-one with the wire holes 41. The wall of the fixing hole 431 is provided with a clamping plate 432. The clamping plate 432 can be made of rubber, which has a certain degree of elasticity, can better clamp the cable 3, and is not easy to wear the outer insulation layer of the cable 3.

[0038] Reference Figure 2 and Figure 3 The clamping plate 432 extends into the wire hole 41. The fixing part 43 is provided with an elastic element 433, which can be a spring. The elastic element 433 can drive the fixing part 43 away from the base 44. The side plate 11 is provided with a push block 111, which has a guide slope 112. The guide slope 112 is used to guide the fixing part 43 closer to the base 44 when the cabinet door 13 is closed. When the fixing part 43 is close to the base 44, the cable 3 is clamped between the clamping plate 432 and the wall of the wire hole 41, thereby further securing the cable 3.

[0039] Reference Figure 4 Mounting cylinders 5 are fixed to both the door 13 and the side panel 11. A rotating shaft 6 is slidably mounted in each mounting cylinder 5. The rotating shaft 6 is fixed horizontally relative to the mounting cylinders 5 on the side panel 11. The mounting cylinders 5 of the door 13 are rotatably sleeved on the rotating shaft 6. Multiple limiting blocks 61 are provided around the rotating shaft 6, and multiple mounting grooves 62 are provided on the rotating shaft 6. Each limiting block 61 is slidably mounted in the corresponding mounting groove 62. A driving element 621 is provided in the mounting groove 62. The driving element 621 can be a small spring. The driving element 621 is used to drive the limiting block 61 to extend out of the mounting groove 62.

[0040] Reference Figure 4The inner wall of the mounting cylinder 5 of the door 13 is provided with a limiting groove 51 for the limiting block 61 to extend into. When the door 13 is opened, the limiting block 61 extends into the limiting groove 51, which can prevent the door 13 from shaking randomly.

[0041] Reference Figure 4 and Figure 5 The limiting block 61 is provided with a guide slope 611, which is used to guide the limiting block 61 into the mounting groove 62 when the box door 13 is opened. The inner wall of the mounting cylinder 5 of the box door 13 is also provided with a reset ring groove 52, which is located on the side of the limiting groove 51 away from the bottom plate 12, and the limiting groove 51 communicates with the reset ring groove 52.

[0042] Reference Figure 1 and Figure 4 The limiting block 61 is provided with a reset inclined surface 612, which is used to guide the limiting block 61 into the mounting groove 62 when the rotating shaft 6 slides towards the base plate 12. Both ends of the rotating shaft 6 are provided with limiting rings 63, the diameter of which is larger than that of the rotating shaft 6, and the limiting rings 63 can prevent the rotating shaft 6 from coming out of the mounting cylinder 5.

[0043] The implementation principle of a maintenance-friendly cable distribution box according to this application embodiment is as follows: the distribution plate 4 orderly bundles the cables 3, preventing them from tangling. During maintenance, the box door 13 is opened first, and the connecting rod 131 drives the distribution plate 4 to slide closer to the bottom plate 12, allowing the cables 3 accumulated on the distribution plate 4 to unfold, making it easier for maintenance personnel to identify the cables 3 to be maintained. When the box door 13 is closed, the connecting rod 131 pushes the distribution plate 4 away from the bottom plate 12, causing the reserved cables 3 to accumulate on the distribution plate 4, thereby reducing the risk of loose cable 3 joints and lowering the probability of failure. The correspondence between wire number 42 and the wiring point of the switch device 2 allows maintenance personnel to quickly and accurately identify the cables 3, improving the efficiency of taking, placing, and maintaining the cables 3. The sliding arrangement of the distribution plate 4 and the clamping action of the clamping plate 432 further facilitate the maintenance and fixation of the cables 3. The rotating shaft 6 and the limiting block 61 ensure the stable opening and closing of the box door 13. It improves the problem of messy and difficult-to-maintain cables in the existing technology, increases the operation and maintenance efficiency of cable branch boxes, and reduces the occurrence of secondary faults.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable branch box that is easy to maintain, comprising a box body (1), a switching device (2) disposed in the box body (1), a grounding device, and a plurality of cables (3), characterized in that: The housing (1) is provided with a distribution plate (4), and the distribution plate (4) has a plurality of wire holes (41) on it. The cable (3) is passed through the wire holes (41). The distribution plate (4) has a wire number (42) corresponding to each wire hole (41), and the wire number (42) corresponds to the connection point on the switch device (2).

2. The cable branch box for easy maintenance according to claim 1, characterized in that: The enclosure (1) includes a side plate (11), a bottom plate (12) and a door (13). The cable divider (4) is slidably disposed in the enclosure (1) in the vertical direction. A connecting rod (131) is rotatably disposed on the door (13). The other end of the connecting rod (131) is rotatably disposed on the cable divider (4). The connecting rod (131) is located on the side of the cable divider (4) near the bottom plate (12). The wall of the through hole (41) is in contact with the outer wall of the cable (3).

3. The cable branch box for easy maintenance according to claim 2, characterized in that: The dividing plate (4) includes a fixing part (43) and a base (44). The fixing part (43) is slidably disposed on the base (44). The wire hole (41) is opened on the base (44). The fixing part (43) has fixing holes (431) corresponding to the wire holes (41). The wall of the fixing hole (431) is provided with a clamping plate (432). The clamping plate (432) extends into the wire hole (41). The fixing part (43) is provided with an elastic element (433). The elastic element (433) can drive the fixing part (43) away from the base (44). The side plate (11) is provided with a push block (111). The push block (111) is provided with a guide slope (112). The guide slope (112) is used to guide the fixing part (43) closer to the base (44) when the box door (13) is closed. When the fixing part (43) is close to the base (44), the cable (3) is clamped between the clamping plate (432) and the hole wall of the wire hole (41).

4. The cable branch box for easy maintenance according to claim 2, characterized in that: Both the door (13) and the side panel (11) are provided with mounting cylinders (5). A rotating shaft (6) is slidably arranged in the mounting cylinders (5) on both the door (13) and the side panel (11). The rotating shaft (6) is fixed in the horizontal direction relative to the mounting cylinder (5) on the side panel (11). The mounting cylinder (5) of the door (13) is rotatably sleeved on the rotating shaft (6). A limiting block (61) is provided in the circumferential direction of the rotating shaft (6). The rotating shaft (6) has a... The mounting groove (62) is provided with a limiting block (61) slidably disposed in the mounting groove (62). The mounting groove (62) is provided with a driving member (621) for driving the limiting block (61) to extend out of the mounting groove (62). The inner wall of the mounting cylinder (5) of the box door (13) is provided with a limiting groove (51) for the limiting block (61) to extend into. When the box door (13) is opened, the limiting block (61) extends into the limiting groove (51).

5. A cable branch box for easy maintenance according to claim 4, characterized in that: The limiting block (61) is provided in multiple ways, the mounting groove (62) is provided in multiple ways, and the limiting block (61) is provided with a guide slope (611). The guide slope (611) is used to guide the limiting block (61) to move into the mounting groove (62) when the box door (13) is opened.

6. A cable branch box for easy maintenance according to claim 4, characterized in that: A reset ring groove (52) is also provided on the inner wall of the mounting cylinder (5) of the box door (13). The reset ring groove (52) is located on the side of the limiting groove (51) away from the bottom plate (12). The limiting groove (51) is connected to the reset ring groove (52). The limiting block (61) is provided with a reset inclined surface (612). The reset inclined surface (612) is used to guide the limiting block (61) into the mounting groove (62) when the rotating shaft (6) slides towards the bottom plate (12).

7. A cable branch box for easy maintenance according to claim 4, characterized in that: Both ends of the rotating shaft (6) are provided with limiting rings (63), and the diameter of the limiting rings (63) is larger than the diameter of the rotating shaft (6).

8. A cable branch box for easy maintenance according to claim 2, characterized in that: The side plate (11) has several heat dissipation holes (113).

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