Large-clearance tunnel lining trolley framework supporting system

The invention discloses a large-clearance tunnel lining trolley framework supporting system which is characterized in that each of bilateral half-range frameworks of an adjustable tunnel lining trolley framework is composed of an upper arch framework and a side wall framework; a framework supporting structure stretches across between the bilateral half-range frameworks in a supported manner by taking a truss as a top horizontal support, the truss is shaped like an inverted Chinese character Min, wing rods extends out of two ends of the top of the truss prop against a top longitudinal beam of a trolley, adjustable connecting rods are arranged at the ends of the wing rods, and the front ends of the adjustable connecting rods are connected to dorsal ribs at the bottom ends of the upper arch frameworks; inclined dowel bars are arranged between each of two ends of the truss and each of the dorsal ribs on the middle section of each side wall framework; and vertical supporting rods are arranged between each truss an