MOBILE WORK MACHINE, ESPECIALLY TRUCK-MOUNTED CONCRETE PUMP COMPRISING SUPPORTS

摘要

The invention relates to a mobile work machine, in particular a truck-mounted concrete pump (10), comprising a vehicle-mounted support structure (12) and at least one swivel arm (18) that is hinged to the support structure (12) and is provided with two bearing brackets (26) which project like forks and are mounted by means of a supporting bore (28) so as to be able to rotate horizontally on a swivel arm bolt (24) retained on the support structure (12). According to the invention, the bearing region between the swivel arm bolt (24) and the bearing brackets (26) is sealed by flexible profiled ring seals (36, 38).