The present invention relates to a lift drive mechanism 10, a remote controller 20, a wire tray 30, a first take-up mechanism 40, a second take-up mechanism 50, and the first and second buffer mechanisms ( 60 and 70), the first and second rollers 80 and 90, a falling object seating mechanism 100, and a flooding confirmation mechanism 110. The present invention, through the access blocking device 120, it is possible to block the access of the harmful animal to the connection device 130 by riding the guide 14, the harmful animal is the first and second underground distribution lines (DL1, DL2) ) Is damaged, and a short circuit between the first and second underground distribution lines DL1 and DL2 can be prevented. In addition, the present invention, through the partition mechanism 110, it is possible to block the access of the harmful animal to the connection mechanism 130, the harmful animal damages the connection mechanism 130, a short circuit between the connection mechanism 130 This can be prevented from occurring. In addition, when checking the connection device 130 disposed at a certain point of the power outlet (CH), even if the operator does not enter the power outlet (CH), the connector 130 is moved to the upper side of the manhole (MH). By doing so, it is possible to conveniently check the connection mechanism 130. In this case, in the present invention, when the manhole MH is a simple manhole MH of a narrow form through which a person cannot pass, the connection mechanism 130 may be more conveniently checked.본 발명은 승강구동기구(10)와, 원격컨트롤러(20)와, 전선트레이(30)와, 제1권취기구(40)와, 제2권취기구(50)와, 제1,2완충기구(60,70)와, 제1,2롤러(80,90)와, 낙하물안착기구(100) 및, 침수확인기구(110)을 포함한다.이러한 본 발명은, 접근차단기구(120)를 통해, 유해동물이 가이드(14) 등을 타고 연결기구(130)에 접근하는 것을 차단할 수 있어, 유해동물이 제1,2지중배전선(DL1,DL2)에 손상을 입혀, 제1,2지중배전선(DL1,DL2) 간에 합선이 발생하는 것을 방지할 수 있다.또한, 본 발명은, 칸막이기구(110)를 통해, 유해동물이 연결기구(130)에 접근하는 것을 차단할 수 있어, 유해동물이 연결기구(130)에 손상을 입혀, 연결기구(130) 간에 합선이 발생하는 것을 방지할 수 있다.또한, 전력구(CH)의 일정지점에 배치된 연결기구(130)를 점검할
