A built-in bypass type cable branch box suitable for smart grid

Abstract

The application relates to the technical field of smart grids, and discloses a built-in bypass type cable branch box suitable for a smart grid, which comprises a branch box body, a main cavity arranged in a main box body, and a secondary box body arranged in the main box body, a main cable loop is arranged in the main cavity; a bypass assembly, a connecting piece arranged on the bypass loop, and a separation piece arranged between the secondary box body and the main box body; and a switching assembly arranged on the separation piece. The branch box comprises the branch box body, the bypass assembly, and the switching assembly, and the three components are cooperatively used to realize normal power supply of the main loop, rapid switching of the fault bypass, and electrical safety isolation. The main loop maintenance can be completed without power-off, the power-off duration is greatly shortened, and the power supply reliability and operation and maintenance safety of the smart grid are improved.

Description

Technical Field

[0001] This invention relates to the technical field of smart grids, and more particularly to a built-in bypass cable branch box suitable for smart grids. Background Technology

[0002] With the advancement of smart grid construction, cable branch boxes, as key nodes in the power distribution system, undertake functions such as power distribution, line switching, and fault isolation. Their power supply reliability and ease of operation and maintenance directly affect the stable operation of the power grid. Traditional cable branch boxes are mostly single main circuit structures without built-in bypass designs. When the main circuit fails or is under maintenance, the entire line must be shut down, causing large-scale power outages and seriously affecting residential life and industrial production. Some external bypass solutions require additional wiring, occupy a large space, and pose insulation safety hazards. Switching operations are cumbersome and time-consuming, making it difficult to meet the needs of smart grids for rapid repair and uninterrupted operation and maintenance. At the same time, the internal isolation and protection of existing branch boxes are insufficient, and the main and bypass circuits are prone to mutual interference. Under high current conditions, the contact resistance is high and the heat generation is severe, which can easily lead to safety accidents in the long term. There is an urgent need for a dedicated branch box with built-in bypass, convenient switching, and high safety and reliability. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the problems existing in the built-in bypass cable branch boxes suitable for smart grids, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a built-in bypass cable branch box suitable for smart grids.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a built-in bypass cable branch box suitable for smart grids, comprising: a branch box body, including a main box body, a main cavity disposed within the main box body, and a secondary box body disposed outside the main box body, wherein a main cable circuit is disposed within the main cavity body; a bypass assembly, including a bypass circuit disposed within the secondary box body, a connector disposed on the bypass circuit, and an isolator disposed between the secondary box body and the main box body; and a switching assembly, wherein the switching assembly is disposed on the isolator.

[0007] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the main box body is provided with a first main connection road and a second main connection road, and each of the first and second main connection roads is provided with a branch connection road. A connecting copper busbar is provided between the first and second main connection roads and the main cable circuit, and a connecting component is provided between the branch connection road and the bypass circuit.

[0008] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the connecting component includes a first docking row disposed at the end of the branch connection path and a second docking row disposed at the end of the bypass circuit, and the main box body is provided with an auxiliary locking component for controlling the sliding of the first docking row and the second docking row.

[0009] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the auxiliary locking component includes a main plate, a bracket set on the main plate, and a splicing plate slidably connected to the bracket. The bracket is provided with a rotating component, and the splicing plate is provided with an installation groove. A bottom block is detachably connected to the installation groove, and a connecting rod is provided on the bottom block.

[0010] The rotating component includes a central rotating plate rotatably connected to the card holder and output rods hinged to both ends of the central rotating plate. The output rods are rotatably connected to the splicing plate.

[0011] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the switching assembly includes a horizontal column disposed within the main box, an intermediate rod disposed within the horizontal column, and a threaded rod disposed at the end of the intermediate rod. The horizontal column is slidably connected to the intermediate rod, and a nut block is rotatably connected to the end of the horizontal column. The nut block cooperates with the threaded rod. A plurality of drive bars are disposed on the side wall of the horizontal column, and the plurality of drive bars are arranged in an array on the side wall of the horizontal column. A top plate is disposed at the end of the drive bar, and a guide bottom plate is disposed within the main box.

[0012] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the bottom guide plate is provided with a guide groove, and the top plate is provided with a mating plate that cooperates with the guide groove.

[0013] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the main box body is provided with an outer plate, an extension rod is slidably connected to the outer plate, a plug rod is provided on the top plate and slidably connected to the outer plate, a first inclined surface is provided at the end of the plug rod, a second inclined surface is provided at the end of the extension rod, the first inclined surface and the second inclined surface cooperate, an elastic element for driving the extension rod to retract is provided between the extension rod and the outer plate, and a front plate is provided at the end of the extension rod.

[0014] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the main box body is internally hinged with a first locking rod and a second locking rod, the front ends of the first locking rod and the second locking rod are both hinged with longitudinal rods, and the first locking rod and the second locking rod are respectively hinged to the two front plates.

[0015] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, the longitudinal rod is provided with a spiral guide bar on its outer periphery, a slot is provided on the central rotating plate, a drive nut is connected in the slot, a spiral helix surface that cooperates with the spiral guide bar is provided in the drive nut, and a retaining ring is provided on the bracket to restrict the drive nut.

[0016] As a preferred embodiment of the built-in bypass cable branch box for smart grids described in this invention, a control rod extends outward from the nut block.

[0017] The beneficial effects of this invention are as follows: The branch box includes a branch box body, a bypass component, and a switching component. The three components work together to achieve normal power supply to the main circuit, rapid switching of the fault bypass, and electrical safety isolation. Main circuit maintenance can be completed without power outages, significantly shortening power outage time and improving the power supply reliability and operation and maintenance safety of the smart grid. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall structure of the built-in bypass cable branch box of the present invention, applicable to smart grids.

[0020] Figure 2 This is a schematic diagram of the internal structure of the built-in bypass cable branch box of the present invention, applicable to smart grids.

[0021] Figure 3 This is a schematic diagram of the bypass component status of the built-in bypass cable branch box of the present invention applicable to smart grids.

[0022] Figure 4 This is a schematic diagram showing the installation status of the auxiliary locking component of the built-in bypass cable branch box of the present invention, applicable to smart grids.

[0023] Figure 5This is a schematic diagram of the rear of the auxiliary locking component of the built-in bypass cable branch box of the present invention, applicable to smart grids.

[0024] Figure 6 This is a schematic diagram of the installation of auxiliary locking components and switching components of the built-in bypass cable branch box of the present invention applicable to smart grids.

[0025] Figure 7 This is an enlarged schematic diagram of the switching component of the built-in bypass cable branch box of the present invention, applicable to smart grids.

[0026] Figure 8 This is a cross-sectional view of the switching assembly of the built-in bypass cable branch box of the present invention, applicable to smart grids.

[0027] Explanation of reference numerals in the attached drawings: 100, Branch box body; 101, Main box body; 102, Main cavity; 103, Sub-box body; 104, Main cable circuit; 200, Bypass assembly; 201, Bypass circuit; 203, Isolator; 105, First main connection circuit; 106, Second main connection circuit; 107, Branch connection circuit; 108, Connecting copper busbar; 300, Connecting component; 301, First mating busbar; 302, Second mating busbar; 305, Auxiliary locking component; 3051, Main body plate; 3052, Card holder; 3053, Splicing plate; 3054. Mounting slot; 3055, bottom block; 3056, connecting rod; 3057, central rotating plate; 3058, output rod; 400, switching assembly; 401, horizontal column; 402, intermediate rod; 403, threaded rod; 404, nut block; 405, drive bar; 406, front plate; 4061, guide base plate; 407, guide groove; 408, mating plate; 409, top plate; 500, outer plate; 501, extension rod; 502, insertion rod; 600, first locking rod; 602, second locking rod; 603, spiral guide bar; 604, drive nut. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0032] Example 1

[0033] Reference Figures 1-8 The first embodiment of the present invention provides a built-in bypass cable branch box suitable for smart grids, including a branch box body 100, a bypass component 200, and a switching component 400. The three components work together to achieve normal power supply to the main circuit, rapid switching of fault bypass and electrical safety isolation. The main circuit can be inspected and maintained without power outage, which greatly shortens the power outage time and improves the power supply reliability and operation and maintenance safety of smart grids.

[0034] Furthermore, in this embodiment, the branch box body 100 includes a main box 101, a main cavity 102 disposed within the main box 101, and a secondary box 103 disposed outside the main box 101. The main cavity 102 is provided with a main cable circuit 104. The main box 101 is an integrally sealed metal box with an insulating and flame-retardant coating sprayed on its inner wall. It is fixed to the ground by anchor bolts, providing an overall load-bearing and protective foundation and isolating it from the outside environment.

[0035] The main chamber 102 is an independent enclosed space located on the left side of the main enclosure 101. The main cable circuit 104 is fixed inside by an insulating bracket. The main cable circuit 104 is a three-phase copper busbar structure that bears the large current transmission during normal power supply. The auxiliary enclosure 103 is an independent sealed chamber separated from the main chamber 102 by an insulating partition. It is located on the right side of the main enclosure 101 and provides an independent installation space for the bypass component 200, realizing physical isolation between the main and bypass circuits and avoiding insulation faults caused by mutual interference.

[0036] Furthermore, the bypass assembly 200 includes a bypass circuit 201 disposed within the secondary enclosure 103, connectors disposed on the bypass circuit 201, and an isolator 203 disposed between the secondary enclosure 103 and the main enclosure 101. The bypass circuit 201 is a three-phase copper busbar structure, fixed within the secondary enclosure 103 by an insulating bracket. Its two ends are connected to branch connection lines 107 on the incoming and outgoing sides respectively via connectors, providing temporary power supply during faults. The connectors are copper terminals, fastened with bolts to ensure reliable conductivity. The isolator 203 is an epoxy resin insulating partition, embedded in the partition between the main enclosure 101 and the secondary enclosure 103, completely isolating the electrical connection between the main and secondary enclosures, preventing a fault in the main circuit from affecting the bypass circuit 201, and improving electrical insulation safety.

[0037] Furthermore, a first main connection path 105 and a second main connection path 106 are provided on the main enclosure 101. Branch connection paths 107 are provided on both the first and second main connection paths 105 and 106. A connecting copper busbar 108 is provided between the first and second main connection paths 105 and the main cable circuit 104. A connecting component 300 is provided between the branch connection path 107 and the bypass circuit 201. The first main connection path 105 is an inlet channel, penetrating the left side wall of the main enclosure 101. It consists of an insulating sleeve and an internal conductive copper busbar. The insulating sleeve is embedded in the side wall of the enclosure, and the conductive copper busbar passes through the sleeve. One end is connected to the power grid inlet cable, and the other end is securely connected to the inlet end of the main cable circuit 104 via the connecting copper busbar 108, thus ensuring reliable power input from the power grid.

[0038] Preferably, the second main connection 106 is an outgoing channel that runs through the right side wall of the main housing 101. Its structure is the same as that of the first main connection 105. One end is connected to the outgoing end of the main cable circuit 104 via a connecting copper busbar 108, and the other end is connected to the user-side cable to realize power output to the user side. The branch connection 107 is a branch copper busbar led out from the middle of the conductive copper busbar of the main connection and fixed by an insulating bracket. The connecting copper busbar 108 is a tin-plated rectangular copper busbar. Both ends are fastened to the terminals of the main connection and the main cable circuit 104 respectively by bolts. The contact surface is coated with conductive paste to reduce contact resistance, ensure stable conduction of large current, and avoid local heating.

[0039] In this embodiment, the connecting component 300 includes a first docking row 301 disposed at the end of the branch connecting road 107 and a second docking row 302 disposed at the end of the bypass loop 201.

[0040] The first docking bar 301 is a copper busbar, with one end fixed to the end of the branch connection 107 by bolts and the other end having a sliding groove. The second docking bar 302 has the same structure as the first docking bar 301, with one end fixed to the end of the bypass circuit 201 and the other end having a sliding groove. The first docking bar 301 and the second docking bar 302 are used to realize the rapid electrical connection of the main and bypass circuits 201. The plug-in structure is easy to install and disassemble, has a large conductive contact area, and stable conductivity.

[0041] Preferably, several protruding strips are provided on the sidewalls of the insertion protrusion, and several mating longitudinal grooves that cooperate with the protruding strips are formed on the inner wall of the insertion slot. The protruding strips are strip-shaped convex ridges extending along the length of the insertion protrusion and are evenly distributed on the upper and lower sidewalls of the insertion protrusion. The mating longitudinal grooves are strip-shaped grooves adapted to the protruding strips and are correspondingly formed on the upper and lower inner walls of the insertion slot. During insertion, the protruding strips are embedded in the mating longitudinal grooves, increasing the insertion contact area and friction, preventing the insertion parts from loosening due to vibration, ensuring long-term stable conductive connection, and avoiding overheating or power failure caused by poor contact.

[0042] An auxiliary locking component 305 is provided on the main housing 101 to control the sliding of the first docking row 301 and the second docking row 302. In this embodiment, the auxiliary locking component 305 includes a main plate 3051, a bracket 3052 disposed on the main plate 3051, a splicing plate 3053 slidably connected to the bracket 3052, and several auxiliary plugs disposed on the splicing plate 3053. The main plate 3051 is a rectangular insulating plate, which is fixed to the partition plate separating the main and auxiliary housings 103 by bolts, providing an installation base for the auxiliary locking component 305. The splicing plate 3053 is a rectangular frame, which is slidably connected to the inner wall of the bracket 3052 on both sides by slide rails, and can move horizontally back and forth along the bracket 3052. The auxiliary plug is an insulated rod-shaped structure, which is fixed at equal intervals on the side of the splicing plate 3053 facing the connecting component 300. When the splicing plate 3053 moves, it drives the auxiliary plug to press against the sides of the first docking row 301 and the second docking row 302, thereby achieving mechanical locking of the plug and preventing accidental loosening.

[0043] Furthermore, a rotating component is provided on the card holder 3052. In this embodiment, the rotating component includes a central rotating plate 3057 rotatably connected to the card holder 3052 and output rods 3058 hinged to both ends of the central rotating plate 3057. The output rods 3058 are rotatably connected to the splicing plates 3053. The central rotating plate 3057 is rotatably connected to the middle of the card holder 3052 via a rotating shaft. The two output rods 3058 are symmetrically hinged to the left and right ends of the central rotating plate 3057. The other ends of the output rods 3058 are respectively hinged to the inner sidewalls of the left and right splicing plates 3053. When the central rotating plate 3057 rotates, it drives the output rods 3058 at both ends to swing synchronously, pushing the two splicing plates 3053 to extend outward or retract inward simultaneously, realizing the synchronous locking and unlocking of the auxiliary plugs on both sides, ensuring uniform locking force, and avoiding displacement of the plugs due to unilateral force.

[0044] Furthermore, a mounting groove 3054 is provided on the splicing plate 3053, and a bottom block 3055 is detachably connected within the mounting groove 3054. The bottom block 3055 is connected to the auxiliary plug-in. The mounting groove 3054 is a rectangular groove located on the end face of the splicing plate 3053 facing the connecting component 300. The bottom block 3055 is a rectangular plate made of sponge material, which is detachably snapped into the mounting groove 3054. Conductive paste is adsorbed on its surface. The end of the auxiliary plug-in passes through the bottom block 3055 and is bonded and fixed to the bottom block 3055. When the splicing plate 3053 extends, the bottom block 3055 moves synchronously with the auxiliary plug-in. Conductive paste is evenly applied to the surface of the plug-in protrusion to reduce contact resistance, prevent copper busbar oxidation, and improve the long-term reliability of the conductive connection. The bottom block 3055 is detachable and replaceable for convenient maintenance.

[0045] Furthermore, in this embodiment, the auxiliary plug includes a connecting rod 3056 connected to the bottom block 3055 and several connecting protrusions disposed on the connecting rod 3056. The connecting rod 3056 is an insulated rigid rod, with one end bonded to the bottom block 3055 and the other end being a free end. The connecting protrusions are annular ridges, equidistantly distributed on the outer wall of the connecting rod 3056, increasing the friction with the sides of the first mating row 301 and the second mating row 302, improving locking stability, and preventing the plug from shifting under high current impact.

[0046] Furthermore, the present invention also includes a switching assembly 400, which is disposed on the isolation member 203. The switching assembly 400 includes a horizontal column 401 disposed within the main housing 101, an intermediate rod 402 disposed within the horizontal column 401, and a threaded rod 403 disposed at the end of the intermediate rod 402. The horizontal column 401 and the intermediate rod 402 are slidably connected, and a nut block 404 is rotatably connected to the end of the horizontal column 401, which cooperates with the threaded rod 403. The horizontal column 401 is a circular metal cylinder, which is horizontally fixed to the inner wall of the main cavity 102 by an insulating bracket. The intermediate rod 402 is a circular rod that slides through the interior of the horizontal column 401 and can extend and retract axially along the horizontal column 401. The threaded rod 403 is integrally formed at the end of the intermediate rod 402 facing the nut block 404. The nut block 404 is a round nut piece that is rotatably connected to the end of the cross column 401 through a bearing. The internal thread of the nut block 404 meshes with the threaded rod 403. When the nut block 404 rotates, it drives the threaded rod 403 to move axially, thereby pushing the intermediate rod 402 to extend and retract, providing stable linear power for bypass switching. The threaded transmission has high precision, good self-locking performance, and the position is reliably fixed after switching.

[0047] Inside the main housing 101, a guide base plate 4061 connected to the intermediate rod 402 is provided. An intermediate adjusting component is positioned between the guide base plate 4061 and the crossbar 401. The guide base plate 4061 is a rectangular insulating plate, vertically fixed to the inner wall of the main housing 102. The end of the intermediate rod 402 is slidably connected to the surface of the guide base plate 4061 via a slider, providing horizontal guidance for the extension and retraction of the intermediate rod 402 and preventing it from shifting or jamming. The intermediate adjusting component, positioned between the crossbar 401 and the guide base plate 4061, is used to fine-tune the horizontal position of the crossbar 401, ensuring the alignment accuracy between the intermediate rod 402 and the switching mechanism, and improving the smoothness of the switching action.

[0048] Furthermore, in this embodiment, the intermediate adjustment component includes several sidewall strips disposed on the sidewall of the horizontal column 401, a drive strip 405 rotatably connected to the sidewall strips, and a top plate 409 connected to the drive strip 405. The sidewall strips are rectangular metal strips symmetrically welded to the upper and lower outer walls of the horizontal column 401. The drive strip 405 is a strip plate hinged to both ends of the sidewall strips. The top plate 409 is a rectangular plate hinged to the other end of the drive strip 405. When the drive strip 405 swings, it drives the top plate 409 to translate along the surface of the guide base plate 4061, thereby driving the overall fine adjustment of the horizontal column 401 to achieve precise correction of the position of the horizontal column 401.

[0049] Furthermore, a front plate 406 is provided on the top plate 409, and two drive bars 405 are provided, respectively located at both ends of the side wall bars. Several guide grooves 407 are formed on the guide base plate 4061, and a mating plate 408 that mates with the guide grooves 407 is bent on the top plate 409. The front plate 406 is a vertically bent rectangular plate, integrally formed at the front end of the top plate 409, and is used to connect with the linkage mechanism. The two drive bars 405 are symmetrically arranged to ensure that the top plate 409 is evenly stressed and does not tilt during translation. The guide grooves 407 are rectangular grooves, equidistantly formed on the surface of the guide base plate 4061. The mating plate 408 is a downwardly bent rectangular convex plate, integrally formed at the bottom of the top plate 409. The mating plate 408 is embedded in the guide grooves 407 to restrict the movement trajectory of the top plate 409, ensuring accurate fine-tuning and preventing deviation.

[0050] Furthermore, an outer plate 500 is provided on the guide base plate 4061, and an extension rod 501 is slidably connected to the outer plate 500. An insert rod 502 is provided on the top plate 409 and slidably connected to the outer plate 500. A first inclined surface is provided at the end of the insert rod 502, and a second inclined surface is provided at the end of the extension rod 501. The first inclined surface and the second inclined surface cooperate with each other. The outer plate 500 is a circular insulating cylinder, fixed to the surface of the guide base plate 4061. The extension rod 501 is slidably inserted into the outer plate 500 and can extend and retract along the axial direction of the outer plate 500. The insert rod 502 is a circular rod, fixed to the side wall of the top plate 409. The first inclined surface is formed at the end of the insert rod 502, and the second inclined surface is an inclined surface adapted to the first inclined surface, formed at the top of the extension rod 501. The translation of the top plate 409 drives the insert rod 502 to move. The first inclined surface presses against the second inclined surface, pushing the extension rod 501 to extend along the outer plate 500.

[0051] Furthermore, an elastic element for driving the extension rod 501 to retract is provided between the extension rod 501 and the outer plate 500. The elastic element is a compression spring, which is sleeved on the outer wall of the extension rod 501. One end abuts against the bottom of the outer plate 500 and the other end abuts against the end of the extension rod 501. When the insertion rod 502 retracts, the elastic force of the elastic element pushes the extension rod 501 to automatically return to its original position, realizing the automatic return of the fine adjustment mechanism. The operation is flexible and reliable.

[0052] Inside the main housing 101, a first locking rod 600 and a second locking rod 602 are hinged. A longitudinal rod is hinged to the front end of each of the first locking rod 600 and the second locking rod 602. The first locking rod 600 and the second locking rod 602 are respectively hinged to the two front plates 406. The first locking rod 600 and the second locking rod 602 are strip-shaped metal plates, symmetrically hinged to the inner wall of the main cavity 102. The front end is respectively hinged to the bottom end of the two longitudinal rods, and the rear end is respectively hinged to the front plate 406 of the upper and lower top plates 409. When the longitudinal rods move up and down, they drive the first locking rod 600 and the second locking rod 602 to swing synchronously, thereby driving the upper and lower top plates 409 to move synchronously, realizing the synchronous fine adjustment of the vertical position of the horizontal column 401, and ensuring that the horizontal column 401 always remains horizontal.

[0053] Furthermore, a spiral guide bar 603 is provided on the outer periphery of the longitudinal rod, and a slot is provided on the central rotating plate 3057. A drive nut 604 is connected in the slot, and a spiral helix surface that mates with the spiral guide bar 603 is provided in the drive nut 604. The spiral guide bar 603 is a spiral protrusion extending along the length of the longitudinal rod, and the drive nut 604 is a circular nut that is rotatably connected in the slot of the central rotating plate 3057. The inner wall of the drive nut 604 is provided with a spiral helix surface that matches the spiral guide bar 603. When the central rotating plate 3057 rotates, it drives the drive nut 604 to rotate synchronously. Through the meshing of the spiral guide bar 603 and the spiral helix surface, the longitudinal rod moves up and down, realizing the linkage transmission of auxiliary locking and central adjustment. Locking and fine adjustment can be completed simultaneously in one operation, improving switching efficiency.

[0054] The threads of the two spiral guide bars 603 run in opposite directions, which means that at the same time, one auxiliary locking component is in the open state and the other is in the closed state.

[0055] Furthermore, a retaining ring is provided on the card holder 3052 to restrict the drive nut 604. The retaining ring is an annular metal plate, fixed to the slotted edge of the central rotating plate 3057, and wrapped around the outer periphery of the drive nut 604 to restrict the axial displacement of the drive nut 604, prevent the drive nut 604 from coming out of the slot, and ensure stable and reliable transmission.

[0056] A control rod extends outward from the nut block 404. The control rod is an insulated operating rod, with one end welded to the outer periphery of the nut block 404 and the other end extending to the outside of the main housing 101. This facilitates manual or electric operation of the nut block 404 to rotate, enabling bypass switching. The operation is labor-saving and convenient, and the switching can be completed without opening the housing, thus improving the safety of operation and maintenance.

[0057] Operation process: The main cable circuit 104 is powered normally, and power is transmitted to the user side through the first main connection circuit 105, the main cable circuit 104, and the second main connection circuit 106. The bypass circuit 201 is in the disconnected state. When the main circuit fails or needs maintenance, the operator rotates the external control lever, which drives the nut block 404 to rotate. Through the meshing transmission between the threaded rod 403 and the nut block 404, the intermediate rod 402 is pushed forward along the crossbar 401, which drives the first docking row 301 and the second docking row 302 to dock, realizing the electrical connection of the main and bypass circuits 201. Simultaneously, the central rotating plate 3057 rotates synchronously with the switching action. On one hand, it drives the output rods 3058 at both ends to swing, pushing the splicing plate 3053 to extend outward along the bracket 3052. The auxiliary plug-in presses against the sides of the first docking row 301 and the second docking row 302 to complete the mechanical locking. The bottom block 3055 simultaneously applies conductive paste to the plugging surface. On the other hand, it drives the drive nut 604 to rotate, which drives the longitudinal rod to move up and down through the spiral guide bar 603, thereby causing the first locking rod 600 and the second locking rod 602 to swing, pushing the top plate 409 to move horizontally, and fine-tuning the position of the crossbar 401 to ensure accurate alignment. After the switching is completed, the bypass circuit 201 is turned on, and the main circuit can be disconnected for maintenance without power interruption. After maintenance is completed, the control rod is rotated in the opposite direction, the middle rod 402 retracts, and the first docking row 301 and the second docking row 302 are separated. The auxiliary locking component 305 is unlocked simultaneously, restoring the main circuit power supply.

[0058] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0059] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0060] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A built-in bypass cable branch box suitable for smart grids, characterized in that: include: The branch box body (100) includes a main box (101), a main cavity (102) disposed in the main box (101), and a secondary box (103) disposed outside the main box (101). The main cavity (102) is provided with a main cable circuit (104). The bypass assembly (200) includes a bypass circuit (201) disposed in the sub-box (103), a connector disposed on the bypass circuit (201), and an isolation component (203) disposed between the sub-box (103) and the main box (101). A switching component (400) is disposed on an isolator (203).

2. The built-in bypass cable branch box for smart grids as described in claim 1, characterized in that: The main housing (101) is provided with a first main connection road (105) and a second main connection road (106). Both the first main connection road (105) and the second main connection road (106) are provided with branch connection roads (107). A connecting copper busbar (108) is provided between the first main connection road (105) and the second main connection road (106) and the main cable circuit (104). A connecting component (300) is provided between the branch connection road (107) and the bypass circuit (201).

3. The built-in bypass cable branch box for smart grids as described in claim 2, characterized in that: The connecting component (300) includes a first docking row (301) disposed at the end of the branch connecting road (107) and a second docking row (302) disposed at the end of the bypass circuit (201). The main housing (101) is provided with an auxiliary locking component (305) for controlling the sliding of the first docking row (301) and the second docking row (302).

4. The built-in bypass cable branch box for smart grids as described in claim 3, characterized in that: The auxiliary locking component (305) includes a main plate (3051), a bracket (3052) disposed on the main plate (3051), and a splicing plate (3053) slidably connected to the bracket (3052). The bracket (3052) is provided with a rotating component. The splicing plate (3053) is provided with a mounting groove (3054). A bottom block (3055) is detachably connected in the mounting groove (3054). A connecting rod (3056) is provided on the bottom block (3055). The rotating component includes a central rotating plate (3057) rotatably connected to the card holder (3052) and output rods (3058) hinged to both ends of the central rotating plate (3057). The output rods (3058) are rotatably connected to the splicing plate (3053).

5. The built-in bypass cable branch box suitable for smart grids as described in claim 4, characterized in that: The switching assembly (400) includes a horizontal column (401) disposed in the main housing (101), an intermediate rod (402) disposed in the horizontal column (401), and a threaded rod (403) disposed at the end of the intermediate rod (402). The horizontal column (401) is slidably connected to the intermediate rod (402). A nut block (404) is rotatably connected to the end of the horizontal column (401). The nut block (404) cooperates with the threaded rod (403). A plurality of drive bars (405) are disposed on the side wall of the horizontal column (401). The plurality of drive bars (405) are arranged in an array on the side wall of the horizontal column (401). A top plate (409) is disposed at the end of the drive bar (405). A guide bottom plate (4061) is disposed in the main housing (101).

6. The built-in bypass cable branch box for smart grids as described in claim 5, characterized in that: The guide bottom plate (4061) is provided with a guide groove (407), and the top plate (409) is provided with a mating plate (408) that mates with the guide groove (407).

7. The built-in bypass cable branch box for smart grids as described in claim 6, characterized in that: The main housing (101) is provided with an outer plate (500), and an extension rod (501) is slidably connected to the outer plate (500). The top plate (409) is provided with an insert rod (502) slidably connected to the outer plate (500). The end of the insert rod (502) is provided with a first inclined surface, and the end of the extension rod (501) is provided with a second inclined surface. The first inclined surface and the second inclined surface cooperate. An elastic element for driving the extension rod (501) to retract is provided between the extension rod (501) and the outer plate (500). The end of the extension rod (501) is provided with a front plate (406).

8. The built-in bypass cable branch box for smart grids as described in claim 7, characterized in that: The main housing (101) is internally hinged with a first locking rod (600) and a second locking rod (602). The front ends of the first locking rod (600) and the second locking rod (602) are both hinged with longitudinal rods. The first locking rod (600) and the second locking rod (602) are respectively hinged to the two front plates (406).

9. The built-in bypass cable branch box for smart grids as described in claim 8, characterized in that: The outer periphery of the longitudinal rod is provided with a spiral guide bar (603), the central rotating plate (3057) is provided with a slot, the slot is connected to a drive nut (604), the drive nut (604) is provided with a spiral helix angle surface that cooperates with the spiral guide bar (603), and the card holder (3052) is provided with a retaining ring that restricts the drive nut (604).

10. The built-in bypass cable branch box for smart grids as described in claim 5, characterized in that: A control rod extends outward from the nut block (404).

Images