Movable adjustable trolley special for installation of sliding contact line

The invention relates to the field of installation of sliding contact lines, and particularly relates to a movable adjustable trolley special for installation of a sliding contact line. The movable adjustable trolley comprises a lifting cage and a cross beam, wherein one end of the cross beam is connected with the lifting cage, and the other end of the cross beam is connected with a crown block track through walking wheels; vertical installation holes are formed in stand columns of the lifting cage at equal intervals; transverse installation holes matched with the vertical installation holes are formed in the cross beam at equal intervals; the lifting cage is connected with the cross beam through a connecting piece.; the walking wheels comprise the first main wheel and the second main wheel; the first main wheel and the second main wheel are oppositely arranged; the first main wheel is movably connected with the cross beam through a first supporting leg; the second main wheel is fixedly connected with the cro