Crane, and method for deploying an extension of launches in a telescopic boom

摘要

Crane, and method for deploying an extension of launches in a telescopic boom. A crane comprising a telescopic boom has an element of spear base and an internal element mounted in the base element sliding way spear, with a first end that protrudes from the base element of spear. The internal element includes first and second elements connectors.An extension of the spear has a first end includes first and second connecting elements. The extension of lance also includes first and second sets of supports spaced along, and is foldable positions for use and storage.A first support associated with the base support element includes a spear to retain a pivoting the first set of support, and a second bracket has a rail which protrudes from the base.A cursor is supported in sliding way by track and an actuator connected between the slider and the spear of the cursor between a position retraida and an extended position relative to the base element of spear. A method for deploying an extension boom is also disclosed.