A cable branch box and method that facilitates maintenance

Abstract

The application belongs to the technical field of branch boxes, and particularly relates to a cable branch box convenient to maintain and a method thereof, which comprises a cabinet, a cable distribution assembly, a wire clamping assembly and a pull-resistant assembly, etc. The cabinet is used for installing electrical elements, the cable distribution assembly is used for distributing power in a one-to-two manner, the wire clamping assembly is used for fixing cables at cable bending positions and horizontally guiding cable ends from bottom to top to corresponding ends of the cable distribution assembly, and the pull-resistant assembly is used for preventing cables from being loosened from the cable distribution assembly due to being pulled downward. The cable distribution assembly in the application can realize plug-and-play and quick disassembly of main cables and branch cables, so as to improve the disassembly efficiency of the branch box and the maintenance efficiency of cable connection.

Description

Technical Field

[0001] This invention belongs to the field of branch box technology, and particularly relates to a cable branch box and method that are easy to maintain. Background Technology

[0002] Cable branch boxes (also known as cable junction boxes) are core supporting equipment in power distribution network systems. They are mainly used for branching, connecting, and transferring cable lines to achieve flexible power distribution.

[0003] Traditional cable distribution boxes have many electrical connection points due to their function, and the traditional electrical connection method will greatly reduce the connection efficiency and installation efficiency of the distribution box.

[0004] When problems occur in open-air cable distribution boxes, timely emergency repairs and maintenance must be carried out regardless of whether it is sunny or rainy. During prolonged emergency repairs in the rain, rainwater can enter the box and cause short circuits. On sunny days, prolonged emergency repairs with the box open can cause discomfort to maintenance personnel due to excessively high temperatures and direct sunlight.

[0005] During heavy rain, water accumulated in cable trenches or cable wells can backflow into the branch boxes, causing short circuits due to water immersion. At the same time, moisture from cable trenches or cable wells can also enter the boxes through cable holes under normal circumstances, causing condensation and potentially leading to short circuits.

[0006] In addition, existing branch boxes may have multiple cable clamping structures for fixing cables. Each cable clamping structure occupies a certain amount of space inside the box due to its fixed position, which affects operation. Furthermore, unused cable clamping structures cannot adapt to the different curvatures required for installation and fixing cables of different thicknesses due to their fixed positions.

[0007] This invention designs a cable branch box that is easy to maintain, thus solving the above problems. Summary of the Invention

[0008] Therefore, it is necessary to address the existing problems of current cable distribution boxes by providing a maintenance-friendly cable distribution box. A shielding component can act as a rain or sun awning when the cabinet door is opened for emergency repairs in rainy or hot weather, preventing rainwater from entering the cabinet and causing short circuits, or preventing discomfort caused by excessive sunlight exposure. A cable distribution component enables plug-and-play and quick disconnection of main and branch cables, improving the efficiency of branch box assembly and disassembly, as well as cable connection maintenance. A cable clamping component secures cables of different thicknesses and specifications with corresponding curvatures and electrical connections to the cable distribution component, ensuring the stability of the connection between the component and the cable. An anti-pull component prevents cables from being accidentally pulled by maintenance personnel in the cable trench, preventing loosening of connections and poor contact, and also facilitating maintenance work in the cable trench without affecting the branch box. A moisture-venting component ensures that moisture from the cable trench does not enter the cable distribution cavity of the cabinet through the second cable hole on the floating plate and the first cable hole at the top of the drainage chamber, preventing condensation and short circuits at cable connections. Anti-backflow components prevent water accumulation in the cable trench from flowing back into the cabinet and causing a short circuit.

[0009] The above objectives are achieved through the following technical solutions: A maintenance-friendly cable distribution box for power distribution and transmission, comprising: The cabinet is used to install electrical components. The cabinet has a cable distribution chamber and a drainage chamber arranged from top to bottom. The cabinet opening on the front side of the cable distribution chamber is provided with two double cabinet doors and a rain shield component that can be operated with one hand when opening the cabinet doors for maintenance.

[0010] The cable splitting assembly, located at the top of the cable splitting cavity, is used to split power into two. The cable splitting assembly includes a two-way branch connector mounted on the top of the cable splitting cavity via a bracket. The outer surface of the branch connector is provided with a first insulating sleeve. Each of the three ends of the branch connector is provided with a first connector and a second connector to enable plug-in locking with the cable. The first connector and the second connector have the structural feature of increasing the electrical contact area.

[0011] The cable clamping assemblies, located on both sides of the cable distribution cavity, are used to fix the cable at the bend and guide the cable end that passes through from bottom to top horizontally to the corresponding end of the cable distribution assembly. The cable clamping assemblies have the structural features of adapting to the bending curvature of cables of different thicknesses and being stored in a straight state to the side wall of the cable distribution cavity when not in use.

[0012] The anti-pull component, located at the bottom of the first cable insertion hole of the cable distribution cavity, is used to prevent the connection between the cable and the cable distribution component from becoming loose due to downward pulling of the cable.

[0013] A moisture-venting component is used to prevent moisture from the cable well from entering the cable distribution chamber through the first cable penetration hole.

[0014] The anti-backflow component is used to prevent water accumulated in the cable well from entering the cable distribution cavity through the first cable penetration hole at the bottom of the cable distribution cavity and causing a short circuit.

[0015] In one embodiment, the shielding assembly includes two first baffles hinged together by a hinge shaft. One end of the hinge shaft is hinged between the cabinet opening on the front side of the cabinet and the rain cover around the top of the cabinet via a first hinge pin parallel to the width direction of the cabinet. The axis of the hinge shaft is located on the symmetrical plane of the cabinet. Both first baffles are hinged with circular blocks via second hinge pins. When the two first baffles are in the same plane, the two second hinge pins are coaxial with the first hinge pins. The circular blocks slide in the guide groove on the front side of the cabinet around a horizontal axis perpendicular to the axis of the first hinge pins. The gap at the hinge of the two first baffles is sealed by an elastic membrane.

[0016] In one embodiment, the first connector includes a pointed tip disposed at the end of the branch connector and a plug sleeve disposed near the end of the branch connector and connected to the first insulating sleeve, wherein the upper and lower bevels of the pointed tip are symmetrically provided with a first slot.

[0017] In one embodiment, the second connector includes a second insulating sleeve. Conductive copper blocks and slots that mate with the inserts are respectively provided at both ends of the second insulating sleeve. Two second copper strips, corresponding one-to-one with the upper and lower sides of the corresponding ends of the branch connectors, are provided inside the second insulating sleeve. Arc-shaped copper contacts that mate with the corresponding sides of the branch connector ends are provided on the inner sides of the ends of the second copper strips. Two swing arms are symmetrically hinged to the inner walls of the second insulating sleeves on both sides of the two second copper strips via fixing pins. A first roller shaft located outside the second copper strip and a second roller shaft located inside the second copper strip are respectively connected between the two ends of the two swing arms in the same layer. The first roller shaft and the second roller shaft are respectively provided with contacts that mate with the second copper strips. The outer side has a first pressure roller and a second pressure roller that mates with the corresponding pointed bevel and the first slot. A leaf spring connects the two swing arms on the same side of the two layers of swing arms, which allows the two first pressure rollers to open. A cylindrical protective sleeve is provided at the conductive copper block end of the second insulating sleeve. Several circumferentially evenly distributed first copper strips connected to the conductive copper block are provided inside the protective sleeve. The ends of the first copper strips are provided with clamping blocks that mate with the copper core of the cable. The ends of the clamping blocks are provided with a pressing conical surface. Several movable grooves that mate with the clamping blocks are opened on the wall of the protective sleeve. The end of the protective sleeve is threaded with a first threaded sleeve. The end of the first threaded sleeve is provided with a top pressure sleeve that mates with the pressing conical surface on the clamping block.

[0018] In one embodiment, the cable clamping assembly includes two L-shaped seats. One branch of each L-shaped seat has two coaxial rotating holes. The two L-shaped seats are hinged together by a pivot pin rotatably disposed within the rotating holes. The other branch of each L-shaped seat has a guide rod. The end of one guide rod is hinged to a slide block on a guide rail that slides along the width of the cabinet at the top of the cable distribution cavity. The end of the other guide rod is fixed to a slide block that slides vertically along a guide rail on the side wall of the cable distribution cavity. The pivot pin has two synchronously rotating winding wheels that correspond one-to-one with the two guide rods. Pull ropes are wound on the winding wheels, with the winding directions of the pull ropes on both winding wheels being the same. The end of the pull rope, guided by the guide wheel within the corresponding L-shaped seat, passes through a rope-passing hole in the L-shaped seat and the end of the guide rod in a direction parallel to the corresponding guide rod, and connects to a clamping assembly slidably disposed on the guide rod along its length, located within the cable distribution cavity. The right side of the top guide rail and the upper end of the guide rail located on the side wall of the cable distribution cavity are both provided with limiting blocks that cooperate with the corresponding card holder assembly. The guide rod is provided with a first spring to prevent the card holder assembly from approaching the corresponding L seat. The winding wheel is rotatably connected to the first ring sleeve on the inner wall of the corresponding side L seat. A vortex spring that drives the winding wheel to wind the pull rope is connected between the winding wheel and the second ring sleeve on the inner wall of the corresponding side L seat. A third ring sleeve coaxial with the turning pin is provided on the outer side of one of the L seats. A fourth ring sleeve is provided in the third ring sleeve through a one-way ring. A fifth ring sleeve slides axially in the fourth ring sleeve. A first torsion wheel is provided at the outer end of the fifth ring sleeve. A second spring that makes the first torsion wheel axially approach the annular protrusion is connected between the first torsion wheel and the annular protrusion at the end of the fourth ring sleeve. Two second slots are opened at the inner end of the fifth ring sleeve, which are distributed at 180-degree intervals in the circumference and correspond one-to-one with the two card blocks on the end of the turning pin.

[0019] In one embodiment, the card holder assembly includes a sliding sleeve slidably disposed on a guide rod and connected to a first spring. A fixed rod connected to a pull rope is disposed within the sliding sleeve. The fixed rod slides within a groove on the guide rod communicating with a rope-threading hole. A U-shaped seat is connected to the sliding sleeve via a connecting frame. The opening of the U-shaped seat is located on the front side, and two branches of the U-shaped seat are distributed perpendicular to the corresponding guide rod. Two coaxial second threaded sleeves are rotatably disposed on the two branches of the U-shaped seat. Each of the two second threaded sleeves is threadedly connected to a screw. A clamp is disposed at the inner end of each of the two screws. A first gear is disposed at the outer end of the second threaded sleeve. The first gear meshes with a second gear disposed on a corresponding branch of the U-shaped seat via a first rotating shaft. A second rotating shaft is disposed on the outer side of the U-shaped seat. Two fourth gears are disposed at both ends of the second rotating shaft. The two fourth gears mesh with two third gears disposed on the two first rotating shafts in a one-to-one correspondence. A third rotating shaft is disposed on the connecting frame. A second torsion wheel and a fifth gear meshing with one of the first gears are respectively disposed at both ends of the third rotating shaft.

[0020] In one embodiment, the anti-pull assembly includes two symmetrically arranged rod sleeves at the first cable hole. A top rod slides horizontally within each rod sleeve. A wheel seat is provided at the end of each top rod. A clamping wheel that engages with the cable is arranged within the wheel seat via an axle. A third spring is provided within each rod sleeve to move the top rod outwards. Sixth gears are provided at both ends of the axle. The two sixth gears mesh with seventh gears located on corresponding sides of the wheel seat via a fourth rotating shaft. One end of the fourth rotating shaft slides within a hollow fifth rotating shaft. The fifth rotating shaft is rotatably positioned on a corresponding side of the rod sleeve. An eighth gear is provided at the end of the fifth rotating shaft. The eighth gear meshes with a ninth gear located on the outside of the rod sleeve. A tenth gear is coaxially connected to the ninth gear. The tenth gear meshes with an eleventh gear located on the outside of the rod sleeve. The eleventh gear is coaxially connected to a twelfth gear. The twelfth gear meshes with a first rack sliding in a direction parallel to the movement of the top rod within a guide sleeve on the corresponding side of the rod sleeve.

[0021] In one embodiment, the dehumidification assembly includes a sixth ring sleeve rotatably disposed within a fixed sleeve inside a first cable-passing hole at the bottom of the cable-distributing cavity. The lower end of the sixth ring sleeve is provided with a ring plate, and a plurality of circumferentially evenly distributed blades are provided on the lower side of the ring plate. The blades are vortex-shaped and coaxial with the ring plate, and the cross-section of the blades is inclined. A first pulley is provided on the sixth ring sleeve, and the first pulley is connected to a second pulley on the output shaft of the motor at the bottom of the cable-distributing cavity via a synchronous belt.

[0022] In one embodiment, the anti-backflow component includes a float plate that slides within the drainage chamber. The float plate has several second cable holes corresponding to the first cable holes. Two second baffles symmetrically arranged on the lower side of the float plate control the opening and closing of the drainage holes at the bottom of the corresponding side of the drainage chamber. The drainage holes are located above the fixed plates on both sides of the bottom of the cabinet. A fourth spring connects the float plate to the bottom of the drainage chamber, causing the second baffles to abut against the bottom of the drainage chamber and close the drainage holes. Four second racks symmetrically arranged at the upper side of the float plate are arranged in a four-corner configuration. Two second racks on the same side mesh with two thirteenth gears mounted on the corresponding sidewall of the drainage chamber via a sixth rotating shaft. A fourteenth gear is mounted on the sixth rotating shaft, meshing with a fifteenth gear mounted on the corresponding sidewall of the drainage chamber via a seventh rotating shaft. A sixteenth gear is mounted on the seventh rotating shaft, with two sixteenth gears on opposite sides meshing with two seventeenth gears mounted on the top of the drainage chamber via an eighth rotating shaft.

[0023] The operation method of a cable branch box that is easy to maintain is as follows: S1. First, open the shielding component with one hand. Then, open the two cabinet doors for installation and connection. After the installation and connection are completed, close and lock the cabinet doors before putting down the shielding component. S2. Insert the cable from the cable trench through the first cable insertion hole in the drainage chamber and the second cable insertion hole on the floating plate into the cable distribution chamber. Strip the insulation from the end of the cable and insert it into the protective sleeve in the second connector. The copper core of the cable contacts the conductive copper block. Rotate the first screw sleeve to cause the top pressure sleeve to interact with the first conical surface at the end of the clamping block, so that the clamping block forms a fixed connection between the cable and the second connector. When the cable passes through the first cable insertion hole, use both hands to pry open the two clamping rollers of the anti-pull assembly. When the end of the cable reaches the second connector, release the two clamping rollers of the anti-pull assembly. The two clamping rollers clamp the cable under the action of the corresponding third spring. When it is necessary to disconnect the first connector and the second connector, forcefully separate the first connector and the second connector. S3. Unfold the cable clamping assembly corresponding to the cable on the side wall of the cable distribution cavity and bend and fix the cable with the corresponding curvature; when it is necessary to remove the cable, take the cable out from the two clamping assemblies and then store the two guide rods of the cable clamping assembly in a straight position on the side wall of the cable distribution cavity. S4. During the use of the branch box, when the internal humidity reaches a certain level, the humidity sensor transmits the signal to the control system. The control system controls the motor to start, and the motor drives the dehumidification component to run. The dehumidification component gathers the moisture rising from the first cable hole to the middle of the second cable hole on the float and pushes it downward to prevent the moisture from moving upward through the first cable hole into the branch cable cavity. S5. During the use of the branch box, when water in the cable trench enters the drainage chamber through the first cable hole to a certain height, the float moves upward under the action of buoyancy and drives the two second baffles to open the drainage hole. The water that has entered the drainage chamber is discharged through the opened drainage hole to prevent water from entering the branch cable chamber and causing a short circuit. After the water in the drainage chamber 102 recedes, the float returns to its original position under the action of the fourth spring and drives the two second baffles to close the drainage hole to prevent dust from entering.

[0024] The beneficial effects of this invention are: 1. The shielding component installed on the front side of the cabinet in this invention can form a rain shelter or sunshade when the cabinet door is opened for emergency repairs and maintenance in rainy or hot weather, preventing rainwater from entering the cabinet and causing short circuits or excessively hot sunlight from causing discomfort to maintenance personnel.

[0025] 2. The cable distribution assembly in this invention can realize plug-and-play and quick disconnection of main cables and branch cables, which facilitates the improvement of the disassembly and assembly efficiency of branch boxes and the maintenance efficiency of cable connections.

[0026] 3. The cable clamping assembly in this invention can adapt to different curvatures for different thicknesses, ensuring the stability of the connection between the cable distribution assembly and the cable. When the cable is not installed and fixed, the cable clamping assembly can be stored in the side wall of the cabinet without occupying extra space, which facilitates maintenance operations for maintenance personnel.

[0027] 4. The anti-pull component installed at the first cable hole at the bottom of the cable distribution cavity of the cabinet in this invention does not obstruct the movement of the cable during the process of the cable being transported from the cable trench into the cabinet, but locks the cable when it is pulled outward from the cable trench. This prevents poor contact caused by the connection point of the cable being loosened due to unintentional pulling by maintenance personnel in the cable trench. At the same time, it also facilitates maintenance personnel in the cable trench to carry out corresponding maintenance work without affecting the branch box.

[0028] 5. The dehumidification component located at the first cable hole in the drainage cavity at the bottom of the cabinet can reverse the moisture from the cable trench back to the cable trench through the first cable hole, ensuring that the moisture from the cable trench will not enter the cable distribution cavity of the cabinet through the second cable hole on the floating plate and the first cable hole at the top of the drainage cavity, causing a short circuit at the cable connection point due to condensation.

[0029] 6. The anti-backflow component located at the bottom of the drainage chamber at the bottom of the cabinet in this invention allows water accumulated in the cable trench to flow back into the drainage chamber through the first cable penetration hole at the bottom of the drainage chamber, opening the drainage holes on the side wall of the drainage chamber for drainage, thus preventing water accumulated in the cable trench from flowing back into the cabinet and causing a short circuit. The drainage holes are normally blocked and closed by the second baffles located on both sides of the floating plate to prevent dust from entering.

[0030] 7. The shielding component in this invention can be unfolded or folded up with just one hand. Attached Figure Description

[0031] Figure 1 This is the present invention and its cross-sectional view; Figure 2 This is a schematic diagram of the open state of the present invention; Figure 3 This is a cross-sectional view of the occluding component; Figure 4 This is a first cross-sectional view of the anti-pull assembly in conjunction with the cable; Figure 5 This is a cross-sectional view of the cable clamp assembly and the cable in tandem; Figure 6 This is a cross-sectional view of the anti-reverse flow component; Figure 7 It excludes the component cross-sectional view; Figure 8 This is a second cross-sectional view of the anti-pull assembly in conjunction with the cable; Figure 9 This is a cross-sectional view of the anti-pull component; Figure 10 It is a view of the cabinet and its cross-section; Figure 11 This is a schematic diagram of the floating plate structure; Figure 12 This is a schematic diagram of the shading component; Figure 13 This is a branch joint structure and its cross-sectional view; Figure 14 This is the first sectional view of the second connector; Figure 15 This is the second sectional view of the second connector; Figure 16 This is a schematic diagram of the structure at both ends of the conductive copper block; Figure 17 This is a sectional view of the first threaded sleeve structure; Figure 18 This is a cross-sectional view of the cable, the second connector, and the first connector in tandem; Figure 19 This is a schematic diagram of the structure on the ring plate; Figure 20 This is a wire-clamp assembly and its first sectional view; Figure 21 This is a wire-clamping assembly and its second sectional view; Figure 22 This is a wire-clamp assembly and its third sectional view; Figure 23 This is a guide rod structure and its cross-sectional view; Labels in the diagram: 100. Cabinet body; 101. Cable distribution cavity; 102. Drainage cavity; 103. First cable threading hole; 104. Fixing sleeve; 105. Fixing plate; 106. Drainage hole; 107. Rain shelter; 108. Cabinet door; 109. Shelter assembly; 110. Guide groove; 111. First baffle; 112. Hinge shaft; 113. First hinge pin; 114. Elastic membrane; 115. Second hinge pin; 116. Round block; 200. Cable splitting assembly; 201. Bracket; 202. First insulating sleeve; 203. Insert sleeve; 204. Branch connector; 205. Pointed tip; 206. First slot; 207. Second insulating sleeve; 208. Slot; 209. Protective sleeve; 210. Movable groove; 211. Conductive copper block; 212. First copper strip; 213. Pressing block; 214. Pressing conical surface; 215. Second copper strip; 216. Copper contact piece; 217. Fixing pin; 218. Swing arm; 219. First roller shaft; 220. First pressure roller; 221. Second roller shaft; 222. Second pressure roller; 223. Leaf spring; 224. First threaded sleeve; 225. Top pressure sleeve; 226. First connector; 227. Second connector; 300. Cable clamping assembly; 301. L-shaped seat; 302. Rotating hole; 303. First ring sleeve; 304. Second ring sleeve; 305. Guide rod; 306. Rope threading hole; 307. Slide groove; 308. Slide seat; 309. Guide rail; 310. Limiting block; 311. First spring; 312. Winding wheel; 313. Vortex spring; 314. Pull rope; 315. Guide wheel; 316. Third ring sleeve; 317. One-way ring; 318. Fourth ring sleeve; 319. Ring protrusion; 320. Second spring; 321. Fifth ring sleeve; 322. Second slot; 323. First torsion wheel; 324. Rotating pin; 325. Locking block; 326. Card seat assembly; 327. Sliding sleeve; 328. Fixing rod; 329. Connecting frame; 330. U-shaped seat; 331. Second threaded sleeve; 332. First gear; 333. Second gear; 334. First rotating shaft; 335. Third gear; 336. Fourth gear; 337. Screw; 338. Clamping plate; 339. Fifth gear; 340. Third rotating shaft; 341. Second torsion wheel; 342. Second rotating shaft; 400. Anti-pull assembly; 401. Rod sleeve; 402. Third spring; 403. Top rod; 404. Wheel seat; 405. Wheel axle; 406. Clamping wheel; 407. Sixth gear; 408. Seventh gear; 409. Fourth shaft; 410. Fifth shaft; 411. Eighth gear; 412. Ninth gear; 413. Tenth gear; 414. Eleventh gear; 415. Twelfth gear; 416. First rack; 417. Guide sleeve; 500. Dehumidification assembly; 501. Sixth ring sleeve; 502. Ring plate; 503. Blade plate; 504. First pulley; 505. Synchronous belt; 506. Second pulley; 507. Motor; 600. Anti-reverse flow assembly; 601. Float; 602. Second cable hole; 603. Second baffle; 604. Second rack; 605. Sixth shaft; 606. Thirteenth gear; 607. Fourteenth gear; 608. Fifteenth gear; 609. Seventh shaft; 610. Sixteenth gear; 611. Seventeenth gear; 612. Eighth shaft; 613. Fourth spring; 701. Cable. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0033] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] like Figure 1-23 As shown, a cable 701 branch box, which is easy to maintain and used for power distribution and transmission, includes: Cabinet 100 is used to install electrical components. Cabinet 100 has a cable distribution cavity 101 and a drainage cavity 102 arranged sequentially from top to bottom. The front of the cable distribution cavity 101 is provided with two opposing cabinet doors 108 and a rain shield assembly 109 that can be operated with one hand when opening the cabinet doors 108 for maintenance, which can be used to shield maintenance personnel from rain.

[0036] The cable splitting assembly 200, located at the top of the cable splitting cavity 101, is used to split power into two. The cable splitting assembly 200 includes a two-way branch connector 204 located at the top of the cable splitting cavity 101 via a bracket 201. The outer surface of the branch connector 204 is provided with a first insulating sleeve 202. Each of the three ends of the branch connector 204 is provided with a first connector 226 and a second connector 227 for plugging and locking with the cable 701. The first connector 226 and the second connector 227 have the structural feature of increasing the area of ​​the electrical contact point.

[0037] The cable clamping assemblies 300 disposed on both sides inside the cable distribution cavity 101 are used to fix the cable 701 at the bend and to horizontally guide the end of the cable 701 that passes through from bottom to top to the corresponding end of the cable distribution assembly 200. The cable clamping assembly 300 has the structural features of adapting to the bending curvature of cables 701 of different thicknesses and being stored in a straight state in the side wall of the cable distribution cavity 101 when not in use.

[0038] The anti-pull component 400, located at the first cable hole 103 at the bottom of the cable distribution cavity 101, is used to prevent the connection between the cable 701 and the cable distribution component 200 from becoming loose due to downward pulling.

[0039] The dehumidification component 500 is used to prevent moisture from the cable well 701 from entering the cable distribution cavity 101 through the first cable penetration hole 103.

[0040] The anti-backflow component 600 is used to prevent water accumulated in the cable well from entering the cable distribution cavity 101 through the first cable through hole 103 at the bottom of the cable distribution cavity 101 and causing a short circuit.

[0041] In a further embodiment, such as Figures 1-3 , Figure 10 , Figure 12 As shown, the shielding assembly 109 includes two first baffles 111 hinged together by a hinge shaft 112. One end of the hinge shaft 112 is hinged between the cabinet opening on the front side of the cabinet 100 and the rain cover 107 around the top of the cabinet 100 via a first hinge pin 113 parallel to the width direction of the cabinet 100. The axis of the hinge shaft 112 is located on the symmetrical plane of the cabinet 100. Both first baffles 111 are hinged to a circular block 116 via a second hinge pin 115. When the two first baffles 111 are in the same plane, the two second hinge pins 115 are coaxial with the first hinge pin 113. The circular block 116 slides in the guide groove 110 on the front side of the cabinet 100 around a horizontal axis that is perpendicular to the axis of the first hinge pin 113. The gap at the hinge of the two first baffles 111 is sealed by an elastic membrane 114.

[0042] In a further embodiment, such as Figure 5 , Figure 13 , Figure 18 As shown, the first connector 226 includes a pointed tip 205 disposed at the end of the branch connector 204 and a plug sleeve 203 disposed near the end of the branch connector 204 and connected to the first insulating sleeve 202. The upper and lower inclined surfaces of the pointed tip 205 are symmetrically provided with a first slot 206.

[0043] In a further embodiment, such as Figure 5 , Figures 14-18As shown, the second connector 227 includes a second insulating sleeve 207. Conductive copper blocks 211 and slots 208 that mate with the insert sleeve 203 are respectively provided at both ends of the second insulating sleeve 207. Two second copper strips 215 are provided inside the second insulating sleeve 207, corresponding one-to-one with the upper and lower sides of the corresponding ends of the branch connector 204. Arc-shaped copper contact pieces 216 that mate with the corresponding sides of the ends of the branch connector 204 are provided on the inner side of the ends of the second copper strips 215. Two swing arms 218 are symmetrically hinged to the inner walls of the second insulating sleeve 207 on both sides of the two second copper strips 215 via fixing pins 217. A first roller shaft 219 located outside the second copper strip 215 and a second roller shaft 221 located inside the second copper strip 215 are respectively connected between the two ends of the two swing arms 218 in the same layer. First pressure rollers 219 and 221 that mate with the outer side of the second copper strip 215 are respectively provided on the first roller shaft 219 and the second roller shaft 221. 20 and a second pressure roller 222 that mates with the corresponding pointed tip 205 and the first slot 206. A leaf spring 223 connects the two swing arms 218 on the same side of the two layers of swing arms 218, allowing the two first pressure rollers 220 to open. A cylindrical protective sleeve 209 is provided at the conductive copper block 211 end of the second insulating sleeve 207. Several circumferentially evenly distributed first copper strips 212 connected to the conductive copper block 211 are provided inside the protective sleeve 209. The end of the copper strip 212 is provided with a clamping block 213 that cooperates with the copper core of the cable 701. The end of the clamping block 213 is provided with a pressing conical surface 214. The wall surface of the protective sleeve 209 is provided with a plurality of movable grooves 210 that correspond one-to-one with the clamping block 213. The end of the protective sleeve 209 is threadedly connected with a first threaded sleeve 224. The end of the first threaded sleeve 224 is provided with a top pressure sleeve 225 that cooperates with the pressing conical surface 214 on the clamping block 213.

[0044] In a further embodiment, such as Figure 1 , Figure 5 , Figures 20-23As shown, the cable clamping assembly 300 includes two L-shaped bases 301. One branch of each L-shaped base 301 has two coaxial rotating holes 302. The two L-shaped bases 301 are hinged together by pivot pins 324 rotatably disposed within the rotating holes 302. The other branch of each L-shaped base 301 is provided with a guide rod 305. The end of one guide rod 305 is hinged to a slide block 308 that slides along a guide rail 309 on the top of the cable distribution cavity 101 along the width direction of the cabinet 100. The end of the other guide rod 305 is fixed to a slide block 308 that slides vertically along a guide rail 309 on the side wall of the cable distribution cavity 101. The pivot pin 324 is provided with two winding wheels 312 that rotate synchronously with it and correspond one-to-one with the two guide rods 305. A pull rope 314 is wound on each winding wheel 312. The winding direction of the pull ropes 314 on the two winding wheels 312 is the same. The end of the pull rope 314, guided by the guide wheel 315 in the corresponding L-shaped seat 301, passes through the rope hole 306 at the end of the L-shaped seat 301 and the guide rod 305 in a direction parallel to the corresponding guide rod 305, and connects to the card holder assembly 326 that slides along the length of the guide rod 305. The guide rail 30 is located at the top of the cable distribution cavity 101. On the right side of 9 and at the upper end of the guide rail 309 located on the side wall of the cable distribution cavity 101, there are limiting blocks 310 that cooperate with the corresponding card holder assembly 326. A first spring 311 is provided on the guide rod 305 to prevent the card holder assembly 326 from approaching the corresponding L-shaped seat 301. The winding wheel 312 is rotatably connected to the first ring 303 on the inner wall of the corresponding side L-shaped seat 301. A spiral spring 313 that drives the winding wheel 312 to wind the pull rope 314 is connected between the winding wheel 312 and the second ring 304 on the inner wall of the corresponding side L-shaped seat 301. A device coaxial with the pivot pin 324 is provided on the outer side of one of the L-shaped seats 301. The third ring sleeve 316 has a fourth ring sleeve 318 disposed inside it via a one-way ring 317. The fourth ring sleeve 318 has a fifth ring sleeve 321 that slides axially inside it. The outer end of the fifth ring sleeve 321 is provided with a first torsion wheel 323. A second spring 320 is connected between the first torsion wheel 323 and the annular protrusion 319 at the end of the fourth ring sleeve 318 to bring the first torsion wheel 323 axially closer to the annular protrusion 319. The inner end of the fifth ring sleeve 321 has two second slots 322 that are circumferentially spaced at 180-degree intervals and correspond one-to-one with the two locking blocks 325 on the end of the pivot pin 324.

[0045] In a further embodiment, such as Figure 20 , Figure 22 , Figure 23As shown, the card holder assembly 326 includes a sliding sleeve 327 slidably disposed on the guide rod 305 and connected to the first spring 311. A fixing rod 328 connected to the pull rope 314 is disposed inside the sliding sleeve 327. The fixing rod 328 slides within a groove 307 on the guide rod 305 that communicates with the rope hole 306. A U-shaped seat 330 is connected to the sliding sleeve 327 via a connecting bracket 329. The opening of the U-shaped seat 330 is located on the front side, and the two branches of the U-shaped seat 330 are distributed perpendicular to the corresponding guide rod 305. Two coaxial second threaded sleeves 331 are rotatably disposed on the two branches of the U-shaped seat. Each of the two second threaded sleeves 331 is threadedly connected to a screw 337. The inner... Each end is provided with a clamping plate 338. The outer end of the second threaded sleeve 331 is provided with a first gear 332. The first gear 332 meshes with a second gear 333 that is set on a corresponding branch of the U-shaped seat 330 via a first rotating shaft 334. The outer side of the U-shaped seat 330 is provided with a second rotating shaft 342. The two ends of the second rotating shaft 342 are provided with two fourth gears 336. The two fourth gears 336 mesh with two third gears 335 that are set on the two first rotating shafts 334. The connecting frame 329 is provided with a third rotating shaft 340. The two ends of the third rotating shaft 340 are respectively provided with a second torsion wheel 341 and a fifth gear 339 that meshes with a first gear 332.

[0046] In a further embodiment, such as Figure 1 , Figure 4 , Figure 8 , Figure 9As shown, the anti-pull assembly 400 includes two symmetrically arranged rod sleeves 401 at the first cable hole 103. A top rod 403 slides horizontally within each of the two rod sleeves 401. A wheel seat 404 is provided at the end of each top rod 403. A clamping wheel 406, which engages with the cable 701, is provided within the wheel seat 404 via a wheel axle 405. A third spring 402 is provided within each rod sleeve 401 to move the top rod 403 outwards. Sixth gears 407 are provided at both ends of the wheel axle 405. The two sixth gears 407 respectively mesh with seventh gears 408 located on corresponding sides of the wheel seat 404 via a fourth rotating shaft 409. One end of the fourth rotating shaft 409 is slidably positioned... The fifth rotating shaft 410 is placed inside the hollow fifth rotating shaft 410, which is rotatably disposed on the corresponding side of the rod sleeve 401. The end of the fifth rotating shaft 410 is provided with an eighth gear 411, which meshes with a ninth gear 412 disposed on the outside of the rod sleeve 401. The ninth gear 412 is coaxially connected to a tenth gear 413, which meshes with an eleventh gear 414 disposed on the outside of the rod sleeve 401. The eleventh gear 414 is coaxially connected to a twelfth gear 415, which meshes with a first rack 416 that slides in a direction parallel to the movement of the push rod 403 within the upper guide sleeve 417 on the corresponding side of the rod sleeve 401.

[0047] In a further embodiment, such as Figure 1 , Figure 4 , Figure 6 , Figure 7 , Figure 10 , Figure 19 As shown, the dehumidification assembly 500 includes a sixth ring sleeve 501 rotatably disposed in a fixing sleeve 104 inside the first cable hole 103 at the bottom of the cable distribution cavity 101. A ring plate 502 is provided at the lower end of the sixth ring sleeve 501. Several circumferentially evenly distributed blades 503 are provided on the lower side of the ring plate 502. The blades 503 are vortex-shaped and coaxial with the ring plate 502. The cross-section of the blades 503 is inclined. A first pulley 504 is provided on the sixth ring sleeve 501. The first pulley 504 is connected to a second pulley 506 on the output shaft of the motor 507 at the bottom of the cable distribution cavity 101 via a synchronous belt 505.

[0048] In a further embodiment, such as Figure 1 , Figure 4 , Figure 6 , Figure 11As shown, the anti-backflow assembly 600 includes a float plate 601 that slides within the drain cavity 102. The float plate 601 has several second cable holes 602 corresponding to the first cable holes 103. Two second baffles 603 are symmetrically arranged on the lower side of the float plate 601 to open and close the corresponding bottom drain holes 106 of the drain cavity 102. The drain holes 106 are located above the fixing plates 105 on both sides of the bottom of the cabinet 100. A fourth spring 613 connects the float plate 601 and the bottom of the drain cavity 102, causing the second baffles 603 to abut against the bottom of the drain cavity 102 and close the drain holes 106. Symmetrical arrangements are also provided on the upper side of the float plate 601. Four second racks 604 are arranged in a four-corner configuration. Two second racks 604 on the same side mesh with two thirteenth gears 606 that are mounted on the corresponding side wall of the drainage chamber 102 via a sixth rotating shaft 605. A fourteenth gear 607 is mounted on the sixth rotating shaft 605. The fourteenth gear 607 meshes with a fifteenth gear 608 that is mounted on the corresponding side wall of the drainage chamber 102 via a seventh rotating shaft 609. A sixteenth gear 610 is mounted on the seventh rotating shaft 609. Two sixteenth gears 610 that are opposite each other on the left and right mesh with two seventeenth gears 611 that are mounted on the top of the drainage chamber 102 via an eighth rotating shaft 612.

[0049] The shielding component 109, located on the front side of the cabinet 100 in this invention, can act as a rain shelter or sunshade when the cabinet door 108 is opened for emergency repairs and maintenance in rainy or hot weather. This prevents rainwater from entering the cabinet and causing short circuits, or avoids discomfort caused by excessive sunlight exposure. The cable distribution component 200 in this invention enables plug-and-play and quick disconnection of the main cable 701 and branch cables 701, improving the efficiency of branch box assembly and disassembly, as well as the maintenance efficiency of cable 701 connections. The cable clamping component 300 in this invention can adapt to different curvatures for various cable thicknesses, ensuring the stability of the connection between the cable distribution component 200 and the cable 701. Furthermore, when not installing or fixing cables, the cable clamping component 300 can be stored in the side wall of the cabinet 100 without occupying extra space, facilitating maintenance operations. In this invention, the anti-pull component 400, which is located at the first cable hole 103 at the bottom of the cable distribution cavity 101 of the cabinet 100 and cooperates with the cable 701, does not obstruct the movement of the cable 701 during the process of the cable 701 being transported from the cable trench into the cabinet 100. Instead, it locks the cable 701 when it is pulled outward from the cable trench, preventing poor contact caused by the connection point of the cable 701 being loosened due to unintentional pulling by maintenance personnel in the cable trench. At the same time, it also facilitates maintenance personnel in the cable trench to carry out corresponding maintenance work without affecting the branch box. In this invention, the dehumidification component 500 located at the first cable hole 103 within the drainage chamber 102 at the bottom of the cabinet 100 can reverse the moisture from the cable trench back into the cable trench through the first cable hole 103, ensuring that moisture from the cable trench does not enter the cable distribution chamber 101 of the cabinet 100 through the second cable hole 602 on the float 601 and the first cable hole 103 at the top of the drainage chamber 102, causing condensation and short circuits at the cable 701 connection points. The anti-backflow component 600 located at the bottom of the drainage chamber 102 at the bottom of the cabinet 100 can allow water accumulated in the cable trench to backflow into the drainage chamber 102 through the first cable hole 103 at the bottom of the drainage chamber 102, opening the drainage holes 106 on the side wall of the drainage chamber 102 for drainage, preventing water accumulated in the cable trench from backflowing into the cabinet 100 and causing short circuits. The drainage holes 106 are normally blocked and closed by the second baffles 603 located on both sides of the float 601 to prevent dust from entering.

[0050] The operation flow of this invention is as follows: In the initial state, both cabinet doors 108 are closed, the shielding assembly 109 is in the storage state, the first connector 226 on the cable splitting assembly 200 is connected to the second connector 227 but the cable 701 is not connected, the sleeve 203 of the first connector 226 is inserted into the slot 208 at the end of the second insulating sleeve 207 on the second connector 227, the end of the branch connector 204 connected to the first connector 226 is inserted between the two copper contacts 216 in the second connector 227, the two second pressure rollers 222 on the second connector 227 are respectively located in the two first slots 206 on the tip 205 of the first connector 226, the two first pressure rollers 220 of the second connector 227 press against the two second copper strips 215 respectively, and the leaf spring 223 is in a compressed state. The cable clamping assembly 300 is not equipped with cable 701 and is stored in a straight position on the side wall of the cable distribution cavity 101. The distance between the sliding sleeve 327 corresponding to the guide rod 305 fixedly connected to the slide 308 and the corresponding L seat 301 in the cable clamping assembly 300 is smaller than the distance between the sliding sleeve 327 corresponding to the guide rod 305 hinged to the sliding sleeve 327 and the corresponding L seat 301. Both pull ropes 314 are in a taut state. The locking block 325 at the end of the pivot pin 324 is inserted into the second locking groove 322 at the end of the fifth ring sleeve 321. The two first springs 311 are in a compressed state, and the two spiral springs 313 are in a compressed state. The anti-pull assembly 400 is not equipped with cable 701. The two clamping wheels 406 press against each other, and the two third springs 402 are in a compressed state. The two second baffles 603 in the anti-backflow assembly 600 close the drainage holes 106 on the side wall of the drainage cavity 102.

[0051] When cable 701 needs to be installed, first open the shielding assembly 109 with one hand, raise the two first baffles 111 to an angle of 90 degrees, and then the two first baffles 111 will swing down and be positioned under their own weight to form a gable roof rain shelter. Then open the two cabinet doors 108.

[0052] The cable 701 is inserted from the cable trench through the first cable hole 103 of the drainage chamber 102 and the second cable hole 602 on the float 601 into the cable distribution chamber 101. The end of the cable 701 is stripped and inserted into the protective sleeve 209 in the second connector 227. The copper core of the cable 701 comes into contact with the conductive copper block 211. Rotating the first screw sleeve 224 causes the top pressure sleeve 225 to interact with the first conical surface at the end of the clamping block 213, so that the clamping block 213 forms a fixed connection between the cable 701 and the second connector 227.

[0053] When it is necessary to disconnect the first connector 226 and the second connector 227, simply forcefully separate the first connector 226 and the second connector 227. After the first connector 226 and the second connector 227 are disconnected, the distance between the two second pressure rollers 222 is less than the distance between the two first slots 206 on the tip 205. When it is necessary to connect the first connector 226 and the second connector 227, insert the tip 205 of the first connector 226 between the two second pressure rollers 222 and lock the two second pressure rollers 222 into the first slots 206 on the tip 205. The two first pressure rollers 220 press the two copper contacts 216 against the corresponding ends of the branch connectors 204 of the first connector 226 to complete the electrical connection.

[0054] When the cable 701 passes through the first cable hole 103, the two clamping rollers 406 of the anti-pull assembly 400 are pushed apart by both hands, causing the corresponding push rods 403 of the two clamping rollers 406 to retract into the corresponding sleeves 401 and compress the third spring 402. Each push rod 403 drives the two twelfth gears 415 to rotate through the corresponding two first racks 416. The two twelfth gears 415 drive the corresponding clamping rollers 406 to rotate through the corresponding eleventh gear 414, tenth gear 413, ninth gear 412, eighth gear 411, fifth rotating shaft 410, fourth rotating shaft 409, seventh gear 408, sixth gear 407 and wheel axle 405 respectively. The direction of rotation does not hinder the upward movement of the cable 701 through the first cable hole 103. When the end of the cable 701 reaches the second connector 227, the two clamping rollers 406 of the anti-pull assembly 400 are released, and the two clamping rollers 406 clamp the cable 701 under the action of the corresponding third spring 402.

[0055] When maintenance personnel in the cable trench accidentally pull the cable 701, the downward movement of the cable 701 will cause the two clamping wheels 406 to rotate. The two clamping wheels 406 will then drive the two clamping wheels 406 to move towards each other through the wheel axle 405, the sixth gear 407, the seventh gear 408, the fourth rotating shaft 409, the fifth rotating shaft 410, the eighth gear 411, the ninth gear 412, the tenth gear 413, the eleventh gear 414, the twelfth gear 415 and the first rack 416 respectively, thereby further clamping the cable 701 and preventing the cable 701 from moving downward.

[0056] Next, the cable clamping assembly 300 on the side wall of the cable distribution cavity 101 corresponding to the cable 701 is unfolded and the cable 701 is bent and fixed.

[0057] The guide rod 305, hinged to the slide 308, is moved towards the cable splitting assembly 200, while simultaneously pushing the guide rod 305 fixed to the slide 308 upwards, so that the two guide rods 305 ultimately form a 90-degree angle. During the unfolding process, the corresponding winding wheel 312 in the L-shaped seat 301 corresponding to the guide rod 305 fixed to the slide 308 releases the corresponding pull rope 314, and the corresponding locking assembly 326 slides downwards to its limit under the action of the corresponding first spring 311. The locking assembly 326 corresponding to the guide rod 305 hinged to the slide 308 is always located at the limit position at the end of the corresponding guide rod 305, and at this time the distance between the two locking assemblies 326 and the corresponding L-shaped seat 301 is equal.

[0058] Then, the bending radius of the right-angle bend of the cable 701 at the cable clamp assembly 300 is determined according to the bending curvature corresponding to the diameter specification of the cable 701. The larger the diameter of the cable 701, the smaller its bending curvature and the larger its bending radius, so that the cable 701 will not be damaged due to excessive bending.

[0059] By adjusting the distance between the two card holder assemblies 326 and the corresponding L-shaped seat 301, the first torsion wheel 323 is rotated. The first torsion wheel 323 drives the fourth ring sleeve 318 to rotate synchronously. At this time, the one-way ring 317 does not play a role. At the same time, the first torsion wheel 323 drives the two winding wheels 312 to rotate synchronously in the same direction and at the same speed through the card block 325 and the pivot pin 324. At this time, the one-way ring 317 does not play a role. The two winding wheels 312 wind the corresponding pull rope 314 in the same direction and at the same speed. The two card holder assemblies 326 slide towards the corresponding L-shaped seat 301 by a certain distance under the pull of the corresponding pull rope 314. Then, the force on the first torsion wheel 323 is removed, and the pivot pin 324 rotates in the opposite direction under the combined action of the two first springs 311. Because the one-way ring 317 is now in effect, the fourth ring sleeve 318 and the fifth ring sleeve 321 prevent the pivot pin 324 from rotating in the opposite direction, thereby ensuring that the two guide rods 305 can remain perpendicular to each other under the action of external force and that the positions of the two card holder assemblies 326 on the guide rods 305 remain unchanged.

[0060] Then, the cable 701 is pressed into the U-shaped seat 330 of the two seat assemblies 326 in a bent state, and the second torsion wheel 341 in the two seat assemblies 326 is rotated so that the two clamping plates 338 in the two U-shaped seats 330 clamp and fix the cable 701.

[0061] When it is necessary to remove cable 701, rotate the second torsion wheel 341 in the two clamping assemblies 326 to contact the two clamping plates 338 in the U-shaped seat 330 to clamp the cable 701, and then remove cable 701. Then, the first torsion wheel 323 is pulled axially, causing the locking block 325 on the pivot pin 324 to disengage from the second locking groove 322 on the fifth ring sleeve 321. Under the action of the corresponding first spring 311, the two locking assemblies 326 slide to their limit on the guide rod 305 away from the L seat 301. Then, the guide rod 305 hinged to the slide 308 is pushed towards the side wall of the cable distribution cavity 101, and at the same time, the guide rod 305 fixedly connected to the slide 308 is pushed downward, so that the two guide rods 305 are stored in a straight line on the side wall of the cable distribution cavity 101. During the storage process, the guide rod 305 hinged to the slide 308 will drive the two winding wheels 312 on the pivot pin 324 to rotate synchronously through the corresponding L seat 301, and wind the pull rope 314 corresponding to the guide rod 305 fixedly connected to the slide 308, so that the locking assembly 326 corresponding to the guide rod 305 fixedly connected to the slide 308 moves upward by a certain amount. Then, rotate the first torsion wheel 323 so that the second slot 322 on the fifth ring 321 and the locking block 325 on the pivot pin 324 can be inserted one by one.

[0062] A humidity sensor is installed inside the cable distribution cavity 101. When the humidity inside the cable distribution cavity 101 reaches a certain level, the motor 507 starts. The motor 507 drives the ring plate 502 at the corresponding first cable hole 103 to rotate through the second pulley 506, the synchronous belt 505, the first pulley 504, and the sixth ring sleeve 501. The ring plate 502 drives the blade 503 on it to gather the moisture rising from the first cable hole 103 to the middle of the second cable hole 602 on the float plate 601 and push it downward to prevent the moisture from moving upward through the first cable hole 103 into the cable distribution cavity 101.

[0063] When water accumulates in the cable trench and enters the drainage chamber 102 through the first cable insertion hole 103 to a certain height, the float moves upward under the action of buoyancy and drives the two second baffles 603 to open the drainage hole 106. The water that has entered the drainage chamber 102 is discharged through the opened drainage hole 106. The second rack 604 on one side of the upper side of the float 601 is connected by the corresponding thirteenth gear 606, fourteenth gear 607, fifteenth gear 608, seventh shaft 609, sixteenth gear 610, and seventeenth gear. 611, the eighth rotating shaft 612, the seventeenth gear 611, the sixteenth gear 610, the seventh rotating shaft 609, the fifteenth gear 608, the fourteenth gear 607, the thirteenth gear 606, and the second rack 604 drive the other side of the float 601 to move upward synchronously and stretch the fourth spring 613. After the water in the drainage chamber 102 recedes, the float 601 returns to its original position under the action of the fourth spring 613 and drives the two second baffles 603 to close the drainage hole 106 to prevent dust from entering.

Claims

1. A cable branch box that is easy to maintain, used for power distribution and transmission, characterized in that, include: The cabinet is used to install electrical components. The cabinet has a cable distribution chamber and a drainage chamber arranged from top to bottom. The cabinet opening on the front side of the cable distribution chamber is provided with two double cabinet doors and a rain shield component that can be operated with one hand when opening the cabinet doors for maintenance. The cable splitting assembly, located at the top of the cable splitting cavity, is used to split power into two. The cable splitting assembly includes a two-way branch connector mounted on the top of the cable splitting cavity via a bracket. The outer surface of the branch connector is provided with a first insulating sleeve. Each of the three ends of the branch connector is provided with a first connector and a second connector to enable plug-in and locking connection with the cable. The first connector and the second connector have the structural feature of increasing the area of ​​the electrical connection contact point. The cable clamping assemblies, located on both sides of the cable distribution cavity, are used to fix the cable at the bend and guide the cable end that is inserted from bottom to top horizontally to the corresponding end of the cable distribution assembly. The cable clamping assemblies have the structural features of adapting to the bending curvature of cables of different thicknesses and being stored in a straight state to the side wall of the cable distribution cavity when not in use. The anti-pull component installed at the first cable hole at the bottom of the cable distribution cavity is used to prevent the connection between the cable and the cable distribution component from becoming loose due to the cable being pulled downwards. A moisture-venting component is used to prevent moisture from the cable well from entering the cable distribution chamber through the first cable penetration hole; The anti-backflow component is used to prevent water accumulated in the cable well from entering the cable distribution cavity through the first cable penetration hole at the bottom of the cable distribution cavity and causing a short circuit.

2. The cable branch box for easy maintenance according to claim 1, characterized in that, The shielding assembly includes two first baffles hinged together by a hinge shaft. One end of the hinge shaft is hinged between the cabinet opening on the front side of the cabinet and the rain cover around the top of the cabinet by a first hinge pin parallel to the width direction of the cabinet. The axis of the hinge shaft is located on the symmetrical plane of the cabinet. Both first baffles are hinged to a circular block by a second hinge pin. When the two first baffles are in the same plane, the two second hinge pins are coaxial with the first hinge pins. The circular block slides in the guide groove on the front side of the cabinet around a horizontal axis that is perpendicular to the axis of the first hinge pin. The gap at the hinge of the two first baffles is sealed by an elastic membrane.

3. The cable branch box for easy maintenance according to claim 1, characterized in that, The first connector includes a pointed tip disposed at the end of the branch connector and a plug sleeve disposed near the end of the branch connector and connected to the first insulating sleeve. The upper and lower inclined surfaces of the pointed tip are symmetrically provided with a first slot.

4. A cable branch box for easy maintenance according to claim 3, characterized in that, The second connector includes a second insulating sleeve. Each end of the second insulating sleeve has a conductive copper block and a slot for engaging with the insert. Inside the second insulating sleeve are two second copper strips, each corresponding to the upper and lower sides of the corresponding ends of the branch connector. The inner side of each end of the second copper strip has an arc-shaped copper contact piece that engages with the corresponding side of the branch connector end. Two swing arms are symmetrically hinged to the inner walls of the second insulating sleeve on both sides of the two second copper strips via fixing pins. The two swing arms in the same layer are connected to the ends of a first roller shaft located outside the second copper strip and a second roller shaft located inside the second copper strip, respectively. The first roller shaft and the second roller shaft are respectively provided with parts that engage with the outer side of the second copper strip. The first pressure roller and the second pressure roller that mates with the corresponding pointed inclined surface and the first slot, the two swing arms on the same side of the two layers of swing arms are connected by a leaf spring that allows the two first pressure rollers to open, the conductive copper block end of the second insulating sleeve is provided with a cylindrical protective sleeve, the protective sleeve is provided with a number of circumferentially evenly distributed first copper strips that are connected to the conductive copper block, the end of the first copper strip is provided with a clamping block that mates with the copper core of the cable, the end of the clamping block is provided with a pressing conical surface, the wall surface of the protective sleeve is provided with a number of movable grooves that mate with the clamping blocks one by one, the end of the protective sleeve is threaded with a first threaded sleeve, the end of the first threaded sleeve is provided with a top pressure sleeve that mates with the pressing conical surface on the clamping block.

5. A cable branch box for easy maintenance according to claim 1, characterized in that, The cable clamping assembly includes two L-shaped seats. One branch of each L-shaped seat has two coaxial rotating holes. The two L-shaped seats are hinged together by a pivot pin rotatably mounted within the rotating holes. The other branch of each L-shaped seat has a guide rod. One guide rod has a hinged end connected to a slide block on a guide rail that slides along the width of the cabinet at the top of the cable distribution cavity. The other guide rod has a fixed end connected to a slide block on a guide rail that slides vertically along the side wall of the cable distribution cavity. The pivot pin has two synchronously rotating winding wheels that correspond one-to-one with the two guide rods. Pull ropes are wound on the winding wheels in the same direction. The ends of the pull ropes, guided by the guide wheels within the corresponding L-shaped seats, pass through rope holes in the L-shaped seats and guide rod ends in a direction parallel to the corresponding guide rod, and connect to a clamping assembly slidably mounted on the guide rod along its length. The guide rail is located at the top of the cable distribution cavity. On the right side and at the upper end of the guide rail located on the side wall of the cable distribution cavity, there are limiting blocks that cooperate with the corresponding card holder assembly. The guide rod is provided with a first spring to prevent the card holder assembly from approaching the corresponding L seat. The winding wheel is rotatably connected to the first ring sleeve on the inner wall of the corresponding side L seat. A vortex spring that drives the winding wheel to wind the pull rope is connected between the winding wheel and the second ring sleeve on the inner wall of the corresponding side L seat. A third ring sleeve coaxial with the pivot pin is provided on the outer side of one of the L seats. A fourth ring sleeve is provided inside the third ring sleeve through a one-way ring. A fifth ring sleeve slides axially inside the fourth ring sleeve. A first torsion wheel is provided at the outer end of the fifth ring sleeve. A second spring that makes the first torsion wheel axially approach the annular protrusion is connected between the first torsion wheel and the annular protrusion at the end of the fourth ring sleeve. Two second slots are opened at the inner end of the fifth ring sleeve, which are distributed at 180-degree intervals in the circumference and correspond one-to-one with the two card blocks on the end of the pivot pin.

6. A cable branch box for easy maintenance according to claim 5, characterized in that, The card holder assembly includes a sliding sleeve slidably mounted on a guide rod and connected to a first spring. A fixed rod connected to a pull rope is disposed within the sliding sleeve. The fixed rod slides within a groove on the guide rod that communicates with a rope-threading hole. A U-shaped seat is connected to the sliding sleeve via a connecting frame. The opening of the U-shaped seat is located on the front side, and the two branches of the U-shaped seat are distributed perpendicular to the corresponding guide rod. Two coaxial second threaded sleeves are rotatably mounted on the two branches of the U-shaped seat. Each of the two second threaded sleeves is threaded with a screw. A clamp is disposed at the inner end of each of the two screws. A first gear is disposed at the outer end of the second threaded sleeve. The first gear meshes with a second gear disposed on a corresponding branch of the U-shaped seat via a first rotating shaft. A second rotating shaft is disposed on the outer side of the U-shaped seat. Two fourth gears are disposed at both ends of the second rotating shaft. The two fourth gears mesh with two third gears disposed on the two first rotating shafts in a one-to-one correspondence. A third rotating shaft is disposed on the connecting frame. A second torsion wheel and a fifth gear meshing with one of the first gears are respectively disposed at both ends of the third rotating shaft.

7. A cable branch box for easy maintenance according to claim 1, characterized in that, The anti-pull assembly includes two symmetrically arranged rod sleeves at the first cable hole. A top rod slides horizontally within each rod sleeve. A wheel seat is located at the end of each top rod. A clamping wheel, cooperating with the cable, is located within the wheel seat via an axle. A third spring is located within each rod sleeve to move the top rod outwards. Sixth gears are located at both ends of the axle. The two sixth gears mesh with seventh gears located on corresponding sides of the wheel seat via a fourth rotating shaft. One end of the fourth rotating shaft slides within a hollow fifth rotating shaft. The fifth rotating shaft is rotatably located on a corresponding side of the rod sleeve. An eighth gear is located at the end of the fifth rotating shaft. The eighth gear meshes with a ninth gear located on the outside of the rod sleeve. A tenth gear is coaxially connected to the ninth gear. The tenth gear meshes with an eleventh gear located on the outside of the rod sleeve. The eleventh gear is coaxially connected to a twelfth gear. The twelfth gear meshes with a first rack sliding in a direction parallel to the movement of the top rod within a guide sleeve on the corresponding side of the rod sleeve.

8. A cable branch box for easy maintenance according to claim 1, characterized in that, The dehumidification assembly includes a sixth ring sleeve rotatably disposed within a fixed sleeve inside the first cable-passing hole at the bottom of the cable-distributing cavity. A ring plate is disposed at the lower end of the sixth ring sleeve, and several circumferentially evenly distributed blades are disposed on the lower side of the ring plate. The blades are vortex-shaped and coaxial with the ring plate, and the cross-section of the blades is inclined. A first pulley is disposed on the sixth ring sleeve, and the first pulley is connected to a second pulley on the output shaft of the motor at the bottom of the cable-distributing cavity via a synchronous belt.

9. A cable branch box for easy maintenance according to claim 1, characterized in that, The anti-backflow assembly includes a float plate that slides within the drainage chamber. The float plate has several second cable holes corresponding to the first cable holes. Two second baffles symmetrically arranged on the lower side of the float plate control the opening and closing of the drainage holes at the bottom of the corresponding side of the drainage chamber. The drainage holes are located above the fixed plates on both sides of the bottom of the cabinet. A fourth spring connects the float plate to the bottom of the drainage chamber, causing the second baffles to abut against the bottom of the drainage chamber and close the drainage holes. Four second racks symmetrically arranged at the upper side of the float plate are arranged in a four-corner configuration. Two second racks on the same side mesh with two thirteenth gears located on the corresponding sidewall of the drainage chamber via a sixth rotating shaft. A fourteenth gear is located on the sixth rotating shaft, meshing with a fifteenth gear located on the corresponding sidewall of the drainage chamber via a seventh rotating shaft. A sixteenth gear is located on the seventh rotating shaft, with two sixteenth gears on opposite sides meshing with two seventeenth gears located on the top of the drainage chamber via an eighth rotating shaft.

10. A method for providing a cable branch box that is easy to maintain, as described in claim 1, characterized in that... The method is as follows: S1. First, open the shielding component with one hand. Then, open the two cabinet doors for installation and connection. After the installation and connection are completed, close and lock the cabinet doors before putting down the shielding component. S2. Insert the cable from the cable trench through the first cable insertion hole in the drainage chamber and the second cable insertion hole on the floating plate into the cable distribution chamber. Strip the insulation from the end of the cable and insert it into the protective sleeve in the second connector. The copper core of the cable contacts the conductive copper block. Rotate the first screw sleeve to cause the top pressure sleeve to interact with the first conical surface at the end of the clamping block, so that the clamping block forms a fixed connection between the cable and the second connector. When the cable passes through the first cable insertion hole, use both hands to pry open the two clamping rollers of the anti-pull assembly. When the end of the cable reaches the second connector, release the two clamping rollers of the anti-pull assembly. The two clamping rollers clamp the cable under the action of the corresponding third spring. When it is necessary to disconnect the first connector and the second connector, forcefully separate the first connector and the second connector. S3. Unfold the cable clamping assembly corresponding to the cable on the side wall of the cable distribution cavity and bend and fix the cable with the corresponding curvature; when it is necessary to remove the cable, take the cable out from the two clamping assemblies and then store the two guide rods of the cable clamping assembly in a straight position on the side wall of the cable distribution cavity. S4. During the use of the branch box, when the internal humidity reaches a certain level, the humidity sensor transmits the signal to the control system. The control system controls the motor to start, and the motor drives the dehumidification component to run. The dehumidification component gathers the moisture rising from the first cable hole to the middle of the second cable hole on the float and pushes it downward to prevent the moisture from moving upward through the first cable hole into the branch cable cavity. S5. During the use of the branch box, when water in the cable trench enters the drainage chamber through the first cable hole to a certain height, the float moves upward under the action of buoyancy and drives the two second baffles to open the drainage hole. The water that has entered the drainage chamber is discharged through the opened drainage hole to prevent water from entering the branch cable chamber and causing a short circuit. After the water in the drainage chamber 102 recedes, the float returns to its original position under the action of the fourth spring and drives the two second baffles to close the drainage hole to prevent dust from entering.

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