Anti-falling device for elevator shaft construction

The utility model discloses an anti-falling device for elevator shaft construction, and belongs to the field of building construction. Comprising a triangular prism which is horizontally arranged, a plurality of thick square tubes which are laid on two long edges of the triangular prism at equal intervals, a plurality of thin square tubes which are inserted into two sides of the plurality of thick square tubes, and waste templates which are fixedly arranged on the thick square tubes and the thin square tubes through dovetail wires, the two flat layer locking devices are welded to the small acute angle end of the triangular prism; the four hanging rings are welded to the two long edges of the triangular prism respectively; the hanging ring penetrates out of the waste template; the thin square tube can stretch out and draw back in the thick square tube to adjust the length. One end of the triangular prism is buckled on each floor of the ground at the elevator shaft opening through a flat layer locking device, a