Patent ID: 7784354

Claim:
A mobile work device, comprising: a vehicle chassis ( 10 ), two front and two rear supporting extension arms ( 22 , 24 ) extendable from a travel position to at least one support position and supportable upon a foundation ( 36 ) with respectively one telescopic support leg ( 28 ), and respectively one measuring member ( 38 ) for determining the support load on each of the support legs ( 28 ), wherein the telescopic support legs ( 28 ) have a telescope member ( 30 ) rigidly connected to the extension arm, and a support leg casing ( 26 ) coupled by means of a linkage bolt ( 32 ), wherein the linkage bolt ( 32 ) functions as the measuring member ( 38 ) for determining the support load in that a device for determining the elastic bending of the linkage bolt ( 32 ) occurring during the supporting process is used as the gauge for determining the support load specific to the support leg, wherein the linkage bolt ( 32 ) includes two longitudinal grooves ( 54 ) lying opposite to each other with reference to a bending plane ( 52 ), open towards oppositely facing sides for receiving of respectively two tension measuring strips(DMS 1 , DMS 3 or, as the case may be, DMS 2 and DMS 4 ), and that the contacts of the tension measuring strips are connected with each other in a measurement circuit ( 44 ) as a bridge circuit.