Sliding-cover components for cantilever lifting scaffold

The utility model relates to a sliding sleeve part of an elevating scaffold of a cantilever arm. The sliding sleeve part is provided with two circular split clamps, the head parts of the two circular split clamps are connected through a wrist, and can be opened and closed freely. Shoulder blades are arranged on the inner diameter parts of the circular split clamps, two split halves are arranged at the shoulder blades, the outer parts of the two split halves are combined with the shoulder blades, the inner diameter is a round hole, the inner diameter of the round hole is identical to the outer diameter of a sliding rod, and the sliding rod is sleeved into the round hole. Corresponding bolt holes are arranged at the tail parts of the circular split clamps. One end of a transverse draw rod is flat, a hole is positioned between the tail parts of the circular split clamps, and the circular split clamps are connected with the transverse draw rod through a bolt. The other end of the transverse draw rod is connected