Cable joint connection branch box

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. A cable joint connection branch box, comprising a box top cover 1, a box frame 2, a cable joint bracket 3, a skid-mounted chassis 4, a high-voltage cable joint 5, a grounding protection box 6, a decorative composite board 7, an access door 8, a high-voltage Cable inlet 9, access door 10, the box top cover 1, box frame 2, cable joint bracket 3, skid-mounted chassis 4 are welded with galvanized profiles, and box top cover 1 is located at the top of the branch box , the cable joint bracket 3 is fixed on the skid-mounted chassis 4, and the box frame 2 is located between the box top cover 1 and the skid-mounted chassis 4; the grounding protection box 6 is fixed inside the box frame 2 with bolts, and the The access door 8 and the access door 10 are fixed on the box frame 2 through stainless steel hinges, and the access door 8 and the access door 10 are provided with rain-proof ventilation shutters; the cable joint bracket 3 and the skid-mounted chassis 4 are welded by welding Forming and fixing, wherein the cable joint bracket 3 is divided into two layers, one phase of the three-phase cable is on the upper layer, and the second phase is on the lower layer, the upper insulation partition 12 is laid under the cable joint of the upper bracket, and the lower insulation is laid between the two cable joints of the lower bracket The partition 13 has cable fixing beams 11 on the upper and lower layers of the cable joint bracket 3 .

[0015] The box top cover 1 includes a top cover ventilation long beam 14, a top plate support beam 15, a cable hoisting fixture 16, a reinforcing square pipe 17, a top cover ventilation side beam 18, a top cover ventilation long beam 14 and a top cover ventilation side. The beam 18 is fixedly connected, and there is a ventilation hole between the two. The cable hoisting fixing frame 16 is between the reinforcing square pipe 17 and the top cover ventilation side beam 18, and a ring-shaped lifting ring is welded. The reinforcing square pipe 17 is located in the top cover ventilation long Between the beams 14 , the roof support frame 15 is above the reinforcing square tube 17 , and the roof support beam 15 is fixed to the roof ventilation long beam 14 .

[0016] The galvanized profiles include galvanized channel steel, galvanized angle steel, and galvanized square pipe.

[0017] The decorative composite board 7 is outside the branch box, riveted and decorated, and the decorative composite board 7 is a polyurethane carved composite board.

[0018] The horizontal height of the support beam supporting the cable head in the cable joint bracket 3 can be adjusted by bolts.

[0019] During the construction operation, the high-voltage cable extends from the ground and enters the cable joint box through the high-voltage cable inlet 9. Because the weight of the high-voltage cable is too heavy, the cable can be lifted by the auxiliary tool (chain hoist) using the cable hoisting bracket 16 on the top cover 1 of the box, and the cable can be placed in the shape of "product" under the condition that the bending radius of the cable is satisfied. on the cable gland bracket 3.

[0020] After the cables to be connected are connected to the branch box from both sides, the cable joint construction can be carried out inside the box. After completing the cable joint, adjust the support height of the movable support beam of the cable joint bracket 3 and fix it with bolts. After the construction is completed, put the upper insulating spacer 12 and the lower insulating spacer 13 into the space and fix them with bolts. Connect the coaxial cable in the cable to the ground protection box 6

[0021] After that, fix the cable on the cable fixing beam 11 with the matching cable fixing clamp. Use an insulating plate to seal the high-voltage cable inlet 9 and fix it with bolts. In this way, the entire high-voltage cable joint is placed on the ground, the maintenance door 8 and the access door 10 are convenient for inspection and maintenance, and the construction in the box is safe and convenient. It can be seen that the invention and utilization of the branch box used for the connection of cable joints of 110kV and above can completely solve many problems such as water soaking, isolation protection, and maintenance of the cable heads in the high-voltage cable joint wells. To ensure the personal safety of construction personnel, ensure the normal operation of cable joints, and ensure the normal operation of the transmission network.