Auxiliary Device for Installing the Lower and Upper Jib Support of an Adjustable Auxiliary Boom on a Mobile Crane

摘要

A device for installing the lower and upper jib support of an adjustable auxiliary boom. The device includes a setup frame which is connected to the lower jib support a tie rod section one end of which can be connected to the hoist cable of the main hoisting gear whereas the other end is hinged to the top of the lower jib support and a tensile member section between the lower jib support and the upper jib support.