In-hole suspension device for drill hole and use method of in-hole suspension device

The invention discloses a drill hole in-hole suspension device and a using method thereof, the drill hole in-hole suspension device comprises a clamping pipeline, one end of the clamping pipeline is arranged in a sealed shape and is provided with an air hole, the open end of the clamping pipeline is connected with a variable joint piece, and the variable joint piece is connected with a traction mechanism arranged in the clamping pipeline; the middle of the clamping pipeline is connected with a positioning mechanism; the using method comprises the following steps that S1, drilling is completed; s2, a suspension device in the drilling hole is assembled; s3, the drilling machine and the drilling rod are used for feeding the suspension device in the drilling hole into the drilling hole; s4, after the in-hole suspension device of the drill hole is placed to a designated position in the drill hole, the drill rod is withdrawn from the drill hole, and the flexible expansion sleeve is shrunk to achieve the fixing oper