SUPPORT BOOMS FOR MOBILE WORKING MACHINES AND MOBILE CONCRETE PUMP WITH SAID SUPPORT BOOMS

摘要

The present invention relates to a support boom for an automobile actuator, in particular for an automobile concrete pump. The strut 20 has a strut body 38 that can rotate about the vertical axis of rotation 32 in the chassis 10, an insert 40 that can be inserted into the strut body, and a strut 38 that is inserted therein. There is a double acting hydraulic cylinder 42 passing through the portion 40, as well as a foot portion 26 which can be vertically displaced and arranged at the outer end of the insert 40. Both ends of the insert hydraulic cylinder 42 are secured to the fixation points 46 and 50 in the opposite end region of the support body 39/8 and the insert 40. In order to reduce the space required during deployment of the support boom while ensuring stable support when in transport, the vertical axis of rotation 32 is axial distance S from the inner fixing point 46 in the direction of the foot of the boom 38 body. Is defined by a journal position or a divided bearing arranged in the cross section, which position is arranged in a manner transversely transverse to the transverse axis of the hydraulic cylinder 42.