Electric bridge positioning device for mechanical equipment installation

The utility model discloses an electric bridge positioning device for mechanical equipment installation, which comprises a positioning base, an adjusting lifting assembly, an automatic marking assembly and a range finder, the automatic marking assembly is installed on the positioning base through the adjusting lifting assembly, the range finder is connected with the positioning base through a support, and the automatic marking assembly is installed on the positioning base through the support. A second groove is formed in the positioning base, a bulk material box is arranged in the second groove, and a material pushing assembly is arranged in the bulk material box; the automatic marking assembly comprises a supporting plate, an air spring, a first electric push rod and a fixing plate, the bottom end of the fixing plate is connected with the supporting plate through the air spring and the first electric push rod, a seal is arranged at the top end of the fixing plate, and scales are arranged on the surface of th