ES201738U - Perfected provision of elements in cranes on truck. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved provision of elements in cranes on a truck, characterized in that it comprises a forearm constituting a forked part, determined by two lateral branches that in their lower linear strip open in step widening the interior cavity there, and by a configuration of their soul or ceiling composed in two oblique planes confluent in the central zone, giving the forearm a crashed form the ends of this forearm are coupled respectively to the head inclined and forked of a column supported on a truck and a telescopic arm embracing with its branches at the extremities of these and performing the coupling by means of two bolts that hold these extending between the edges-wings of the branches of said arm and by means of two hydraulic cylinders that are both tied to a same bolt extended between the forearm branch in the area of its crest but in a point sensibly separated from the edge of the branches and displaced therefore, the line joining the points of articulation of this forearm to the spine and the arm; one of these cylinders is tied between the branches of the head of the column, so that the forearm is folded obliquely embracing with the widened edges of its branches to the head to the lateral end of this against the confine of the widening of the edges, while that the cylinder is enclosed between the forearm and the head, extended in an oblique direction to the edge line of that one with an angle of phase suitable to move the forearm already doing it at the beginning of its next expansion. (Machine-translation by Google Translate, not legally binding)