Road-rail aloft working car

The invention relates to the technical field of aloft working cars and particularly discloses a road-rail aloft working car. The road-rail aloft working car comprises a traveling chassis system, a double working table lifting system and two traveling systems; the traveling chassis system comprises a small car frame and a large car frame, the small car frame comprises a left car frame body and a right car frame body which are symmetrically arranged on the two sides of the large car frame, and a set of steel wheels are installed on the left car frame body and the right car frame body correspondingly; two pairs of traveling large wheels are installed on the large car frame, the traveling chassis system is installed above the large car frame, and the traveling chassis system comprises two lifting arms and working tables connected with the lifting arms correspondingly; and the two traveling systems comprise the road traveling system used for controlling the two traveling systems and the rail traveling system used