Fastening device for hoisting cast-in-place pile guide pipe

The utility model discloses a fastening device for hoisting a cast-in-place pile guide pipe, which comprises two semicircular hoops which are oppositely arranged, each semicircular clamp comprises a clamping ring part and two side lug parts, mounting holes are correspondingly formed in the two side lug parts, vertical clamping grooves are correspondingly formed in the lower end faces of the two side lug parts, the two semicircular clamps are matched with bolts through the mounting holes to be fastened, and a positioning clamp is further welded to the center of the periphery of one semicircular clamp. According to the utility model, the contact area between the guide pipe and the hoisting device is increased, the controllability of the guide pipe is enhanced, and the safety risk is greatly reduced; the device is simple and convenient to operate, can be recycled, and has low requirement on professional level of operators, and the required materials are easy to purchase and are commonly used materials on the con