Construction elevator door anti-collision device

The utility model discloses a construction elevator door anti-collision device which comprises an elevator outer door capable of ascending and descending, an anti-collision rod located at the bottom is fixedly connected to the elevator outer door, the anti-collision rod is located on the inner side of the elevator outer door, a clamping groove is further formed in an elevator body, and the anti-collision rod at the lowest stroke point is clamped and limited through the clamping groove. The anti-collision device has the advantages that the anti-collision rod synchronously ascends and descends along with the elevator outer door, when the elevator outer door is opened, the anti-collision rod automatically moves upwards along with the elevator door without affecting entering and exiting of a construction elevator, when the elevator outer door is closed, the anti-collision rod automatically moves downwards to enter the clamping groove, an electric trolley is prevented from rushing out of the door in the elevator r