| 摘要 |
The invention relates to the chassis of a public works machine, constituted by a central frame joined with two side-members. After assembly with the two side-members, the central frame constitutes a girder comprising a lower plate, an upper plate, two cross-plates, and two longitudinal plates, which plates are joined together as follows: each cross-plate to the upper plate, to the lower plate and to each one of the longitudinal plates, and the upper plate and the lower plate to the longitudinal plates, so as to constitute a closed compartment. The invention finds an application in the construction of a chassis for a mechanical shovel.
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