Work-site machine of a chassis upper rotating, in particular a mat pivoting telescopic

摘要

The invention relates to a work-site machine of the rotary assembly comprising a lower frame (80) having a recessed zone in which the part of the operator (168) of an assembly of upper chassis (84) and a source of energy are at least partially positioned. In addition, a method of manufacture and assembly of the assembly of lower chassis allows various configurations for the work-site machine of the dimensional. The method of manufacture and assembly of the device of work, as well as the structure and the particular positioning of the various components, which improves the stability, the freedom of movement, and the visibility for the operator, while reducing its cost and complexity.