Rail-free pulley moving type GIS dustproof chamber

The utility model provides a track-free pulley mobile GIS dustproof chamber, which relates to the technical field of equipment installation and comprises a pair of first connecting square pipes, first bottom plates are installed at two ends of the pair of first connecting square pipes through bolts, and main frameworks are installed at the upper ends, close to the first connecting square pipes, of one sides of the first bottom plates through bolts. Second bottom plates are installed at the top ends of the main frameworks through bolts, second connecting square pipes are installed at one ends of the second bottom plates through bolts, first connecting rods are installed at the other ends of the second bottom plates through bolts, L blocks are installed at the upper ends of the main frameworks through bolts, and second connecting rods are installed between the L blocks on the two sides through bolts. The top ends of the pair of second connecting rods are fixedly connected with the first connecting rod, and the