TELESCOPIC BOOM BRACING DEVICE

The invention relates to a telescopic jib bracing unit for a mobile crane, and the telescopic jib bracing unit includes a holding frame (10) which is embodied for fastening to the telescopic jib of the mobile crane and exhibits an open cross-section, the cross-sectional opening of which enables the jib (3) to be retracted into the holding frame (10), and two bracing supports (11) which are connected by the holding frame (10) to form a structural unit. Two frame parts (101, 102) which form the open cross-section of the holding frame (10) are coupled to each other via a coupling point (19) suchthat they can be moved with respect to each other. A bracing unit transport system, a mobile crane and a fitting method are also provided. 本发明涉及一种用于移动起重机的伸缩悬臂的支撑单元，其包括：用于固定在移动起重机的伸缩悬臂上的固定架(10)；固定架具有开放的横截面，其横截面开口使得悬臂(3)能够驶入固定架(10)中；以及两个由固定架(10)连接成一个结构单元的支撑支座(11)；其中，两个形成固定架(10)的开放横截面的框架部件(101、102)经由联接部位(19)可相对彼此运动地彼此联接。本发明还涉及相应的支撑单元运输系统、相应的移动起重机和相应的装配方法。