Landing door of construction hoist

The utility model discloses a landing door of a construction hoist, which comprises the following components: a cage door which is fixed at an exit of the hoist and is in sliding fit with the exit of the hoist along the vertical direction; the landing doors are fixed to entrances of all floors and are in sliding fit with the entrances of the floors in the vertical direction, the landing doors correspond to the cage doors in position, and gaps exist between the landing doors and the cage doors; the supporting plate is matched with the cage door in a hinged mode to form a V-shaped opening and closing structure with an upward opening, the supporting plate is staggered with the projection position of the abutting portion on the landing door in the vertical direction when folded, and the supporting plate intersects with the projection of the abutting portion in the vertical direction when unfolded so that the supporting plate can abut against the landing door in the ascending process to drive the landing door to g