Elevator structural part welding positioning device

The invention belongs to the technical field of elevator manufacturing, and particularly relates to an elevator structural part welding positioning device. The elevator structural part welding positioning device comprises a base, a set of guide rails, a pair of sliding supports, a pair of telescopic driving parts and a set of positioning pins. The base is fixedly arranged, a group of guide rails which are parallel to each other are horizontally fixed on the base, the pair of sliding supports are arranged on the guide rails in a sliding manner, and a telescopic driving part is connected between the base and each sliding support; a backup plate in the vertical direction is arranged in each sliding support, the positioning pins are fixed to the backup plates, and the backup plates protrude towards the inner sides of the backup plates. The elevator structural part welding positioning device is simple and reliable in structure and easy and convenient to operate, rigid collision of the elevator structural part in t