Abstract: The present invention refers to loading crane comprising: an articulated arm, comprising at least one first and one second bodies successively connected in order to form an open kinematic chain, wherein the second body is translatingly and/or rotatably movable with respect to the first body; a hydraulic circuit adapted to convey a working fluid for actuating the articulated arm. Said hydraulic circuit comprises a segment associated to one of the first and second bodies comprising: at least one sliding rigid tube slidingly translatingly connected to the body to which the segment of the hydraulic circuit is associated; at least one stationary tube integrally connected to the body to which the segment of the hydraulic circuit is associated; a flexible tube fluidically interconnecting the sliding rigid tube and the stationary tube.

Abstract: A limited rotation slewing ring crane may include a pedestal, a column rotatively coupled, about a first rotation axis, to the pedestal by a slewing ring rotative coupling, and stops for limiting the relative rotation of the column with respect to the pedestal. The crane may also include a rotative sensor adapted to measure a rotation angle of the column with respect to the pedestal. The rotation sensor may include a tubular body axially extending from the base of the column, a stationary body connected to the pedestal and a wheel. A second rotation axis of the wheel may be offset with respect to a first rotation axis of the column with respect to the pedestal.

Abstract: The present invention refers to loading crane comprising: an articulated arm, comprising at least one first and one second bodies successively connected in order to form an open kinematic chain, wherein the second body is translatingly and/or rotatably movable with respect to the first body; a hydraulic circuit adapted to convey a working fluid for actuating the articulated arm. Said hydraulic circuit comprises a segment associated to one of the first and second bodies comprising: at least one sliding rigid tube slidingly translatingly connected to the body to which the segment of the hydraulic circuit is associated; at least one stationary tube integrally connected to the body to which the segment of the hydraulic circuit is associated; a flexible tube fluidically interconnecting the sliding rigid tube and the stationary tube.

Abstract: A limited rotation slewing ring crane comprises: a pedestal, a column rotatively coupled, about a first rotation axis, to the pedestal by a slewing ring rotative coupling, and means for limiting the relative rotation of the column with respect to the pedestal. The crane further comprises a rotative sensor adapted to measure a rotation angle of the column with respect to the pedestal, wherein said rotation sensor comprises: a tubular body axially extending from the base of the column and rotatively integral with the same; a stationary body connected to the pedestal and a wheel, rotatable with respect to the stationary body about a second rotation axis, which is meshed by the tubular body, wherein the second rotation axis of the wheel with respect to the stationary body is offset with respect to the first rotation axis of the column with respect to the pedestal; means for sensing the angular position of the wheel with respect to the stationary body.