Device with at least one arm extensu00ecvel or arm support for spears extensu00ecveis multiarticuladas in the form of a crane, concrete paver and similar columns

摘要

"The device with at least one arm extensu00ecvel or arm support for spears extensu00ecveis multiarticuladas in the form of a crane paver, concrete columns and the like.The invention refers to a device with at least one extension arm or arm support for spears extending multiarticuladas in the form of a crane.Columns concrete paver and similar, comprising at least one hydraulic cylinder to drive a differential arm support.The cylinder includes a hollow rod which has a tubular segment and two end plates arranged on the ends of said segment.With at least one of the end plates is welded on the segment. The union is machined and welded line of the solder is eliminated.At least one of the end plates includes an opening atravessadora that allows the access of tools for machining the cavity hollow of the hollow connecting rod.