Pipe loading device for trolley for downhole operation

The utility model discloses a jigger pipe-feeding machine used in the downhole operation in petroleum industry. The jigger pipe-feeding machine works together with a jigger; during the downhole operation, the jigger pipe-feeding machine puts oil pipes on the jigger in a safe way, protects the outer threads of the oil pipes, and improves the quality of the downhole operation. The jigger pipe-feeding machine comprises a fixing mechanism and a clamping mechanism; and the fixing mechanism is provided with a slide bushing, in which the slide rod of the clamping mechanism is sleeved, so that the clamping mechanism can slide in the fixing mechanism. The slide rod of the jigger pipe-feeding machine can move in the slide bushing freely and can be pulled according to the needs; and users can draw out the slide rod working as a power arm to the maximum, thereby saving labor and controlling the operation easily. Because of easy operation method, the jigger can be used in both loading and unloading oil pipes, and the util