Patent ID: 7195258

Claim:
A mobile thick matter pump with a vehicle chassis ( 10 ) including a vehicle motor ( 36 ), multiple wheel axles ( 32 , 38 , 40 , 42 ) associated with the vehicle chassis ( 10 ), of which at least one wheel axle ( 42 ) includes a pneumatic spring comprised of compressed air operated air spring elements ( 44 ), a hydraulic operated support assembly including four support struts ( 22 , 24 ) extendable between a transport position and a support position with respectively one foot parc ( 26 , 28 ) supportable upon the ground ( 30 ), and a hydraulic operated distribution boom ( 16 ), which can be deployed from a transport configuration lying on the vehicle chassis to a work position and which is rotateable on a boom rotation mechanism ( 12 ) about a vehicle chassis fixed vertical axis, wherein the drive hydraulics for the support struts ( 22 , 24 ) and the distribution boom ( 16 ) can be coupled with an auxiliary drive (NA) of the vehicle motor ( 36 ) selectively with switching off of the vehicle drive, wherein a first reversing valve ( 50 ) is provided in a compressed air line ( 48 ) leading to the pneumatic spring elements ( 44 ), which, depending upon the switched-on condition of the auxiliary drive (NA), is switchable between a compressed air inlet ( 52 ) and an atmospheric outlet ( 54 ).