Assembling type protection device for construction elevator in hoistway

The utility model discloses a split mounting type protection device for a construction elevator in a shaft, and belongs to the field of construction equipment. The split mounting type protection device is arranged on a frame beam of a floor above a construction elevator in a hoistway, and specifically comprises a protection side plate, a protection middle plate and a scaffold clamping piece. Protection side plates are fixed to the two sides of the top of the frame beam, a protection middle plate is arranged between the protection side plates, and the protection side plates and the protection middle plate are spliced to cover the top of the frame beam. A round hole for a scaffold to penetrate through is formed in the splicing position of the tops of the protection side plates and the protection middle plate, and two scaffold clamping pieces are arranged around the round hole. The bottoms of the scaffold clamping pieces are bent, and the bent positions of the bottoms cover gaps among the scaffold, the protectiv