Triangular loop chain type bus body structure of full-load pure-electric double-layer tourist bus

The invention discloses a triangular loop chain type bus body structure of a full-bearing pure-electric double-layer tourist bus, which is composed of six sub-assemblies, comprising a front wall, a rear wall, a left side wall, a right side wall, a first-layer underframe and a second-layer underframe, wherein each sub-assembly is of a space truss structure composed of small-section rod pieces; thefirst-layer bottom frame is composed of a first upper-layer framework, a first lower-layer framework and a first supporting piece. The first upper-layer framework is composed of a first upper rectangular supporting main frame, a triangular link chain A and a first upper auxiliary frame; a plurality of small upright posts are arranged at the crossed position of the triangular loop chain A and the first inclined strut group; the second-layer bottom frame is composed of a second upper-layer framework, a second lower-layer framework and a second supporting piece; the second upper-layer framework is composed of a second up