Embedded-pole HV electrical apparatus combination switchgear

An Embedded-Pole High-Voltage Electrical Apparatus Combination Switchgear comprising:

• a pole bracket;
• a plurality of embedded poles;
• a spring operating mechanism;
• and
• an earthing isolated switch operating mechanism, wherein:
• a screw rod and an insulated rod of the embedded poles extend out of a seal base and lead out an upper pole and a lower pole, respectively;
• a vacuum interrupter is provided within the embedded pole;
• three embedded poles are arranged in a row on the pole bracket that is shaped in a triangular column framework;
• a seal flange is provided at a hole of the pole bracket on a first side of the pole bracket where the embedded pole is fixed, the first side of the pole bracket has an embedded triangular notch in which the spring operating mechanism and the earthing isolated switch operating mechanism are provided;
• an output shaft of the earthing isolated switch operating mechanism is connected with the screw rod corresponding to the embedded pole;
• a mounting base plate of the spring operating mechanism is provided with an operating shaft, with a plurality of symmetrical crank arms which are connected a plurality of ear bases at both sides, each ear base is provided with an ear slide opening;
• the insulated rod of the embedded pole extends out of a limit hole formed between the symmetrical crank arm and a shaft pin;
• the earthing isolated switch operating mechanism is provided in the triangular notch of pole bracket through the mounting base plate of the spring operating mechanism, the earthing isolated switch operating mechanism is located in an upper part of the mounting base plate of the spring operating mechanism which is connected as one piece with the earthing isolated switch operating mechanism through a chamber door interlocking piece a mechanism and interlocking piece piece;
• a plate slide opening is provided at a joint between the chamber door interlocking piece, the spring operating mechanism and the earthing isolated switch operating mechanism;
• a pull-up tension spring is provided at an inner side of a tension spring pin of the chamber door interlocking piece;
• a first end of the chamber door interlocking piece is located at an operating hole of a crank in the earthing isolated switch operating mechanism while a second end of the chamber door interlocking piece is located at a closing semi-axis pinch plate in the spring operating mechanism;
• a rotary disc interlocking piece is provided at an opening semi-axis pinch plate in the spring operating mechanism with a raised rim part offsetting the chamber door interlocking piece;
• and
• a raised knob is provided in the rim of rotary disc interlocking piece, an upward movement is driven by the chamber door interlocking piece offsetting the raised rim part of the rotary disc interlocking piece.