Combined pile casing connecting structure

The utility model discloses a combined type pile casing connecting structure, relates to the technical field of pile casing connection, and solves the technical problems that pile casings are not stable enough during connection due to an existing connecting structure, so that the pile casings are not firm enough after connection construction, follow-up engineering is affected, and the working efficiency of the pile casings is reduced. A steel pipe is fixedly installed on the side wall face of the pile casing body, a limiting groove is formed in the upper wall face of the steel pipe, and a limiting rod is fixedly installed on the lower wall face of the steel pipe. Through cooperation of the limiting rods and the limiting grooves on the steel pipes, connection between the pile casings is further stabilized, the steel pipes are fixed through the limiting bolts and the fixing bolts, friction between the pile casings and holes can be effectively reduced through the steel pipes, the pile casings can be placed into