LIFTING BOOM CRANE WITH BOOM LOCKING DEVICE IN RAISED CONFIGURATION

The invention discloses a lifting boom crane with boom locking device in raised configuration. A crane having a luffing jib (2) and a lifting cylinder (3) includes a cylinder body (30) and a movable rod (31) hinged on the jib to raise and lower the jib, and a locking device (4) adapted to cooperate with the lifting cylinder to mechanically lock the rod in a deployed holding position and block thejib in a raised holding configuration, and further including a spacer (5) hinged on the jib and supporting an abutment (6), the spacer configured for pivoting between a release position wherein the spacer is offset, authorizing the movable rod to be displaced freely, and a locking position wherein the spacer is folded so that the abutment is able to bear on the cylinder body to fixedly maintain the movable rod in the deployed holding position. 本发明公开了种具有将臂架锁定在升高构型中的装置的俯仰臂架起重机，其包括：俯仰臂架(2)和提升缸(3)，所述提升缸具有缸体(30)和铰接在臂架上的可移动杆(31)，以便提升和降低臂架；以及锁定装置(4)，其适于与提升缸配合，以将可移动杆机械地锁定在展开安全位置，并将臂架阻挡在升高安全构型中，并且锁定装置包括铰接在臂架上并支撑邻接件(6)的间隔件(5)，该