Abstract: A mobile working machine comprising: a chassis (5); stabilizer legs (10) connected to the chassis; a hydraulic crane (20) carried by the chassis and comprising a crane boom (25) articulately connected to a rotatable column (22) and a lifting cylinder (26) for pivoting this crane boom; and an electronic control device configured to establish a maximum allowed working pressure for the lifting cylinder while taking into account the contribution to the stability of the mobile working machine against tipping from each stabilizer leg (10) that is in an active supporting position. The electronic control device prevents a manoeuvring of a stabilizer leg away from the active supporting position if the working pressure of the lifting cylinder is higher than a threshold value corresponding to the value of the maximum allowed working pressure for the lifting cylinder that would ensue in case the stabilizer leg is made to leave the active supporting position.

Abstract: A stabilizer leg control system (2) for controlling at least one stabilizer leg (4) arranged to support the stability of a vehicle (6), the control system comprises: a control unit (8) configured to control the operation of said at least one stabilizer leg (4), a user interface unit (10) comprising a user interface (12) configured to receive user input to control various functions of the vehicle, including to control the operation of said at least one stabilizer leg (4) of said vehicle, and to establish bidirectional communication to said control unit by a communication signal (14), and a receiver unit (16), a transmission unit (18) structured to be mounted at, or in the vicinity of, each of said at least one stabilizer leg (4), wherein said transmission unit (18) is configured to transmit a transmission unit signal (20).

Abstract: A mobile working machine comprising: a chassis (5); stabilizer legs (10) connected to the chassis; a hydraulic crane (20) carried by the chassis and comprising a crane boom (25) articulately connected to a rotatable column (22) and a lifting cylinder (26) for pivoting this crane boom; and an electronic control device configured to establish a maximum allowed working pressure for the lifting cylinder while taking into account the contribution to the stability of the mobile working machine against tipping from each stabilizer leg (10) that is in an active supporting position. The electronic control device prevents a manoeuvring of a stabilizer leg away from the active supporting position if the working pressure of the lifting cylinder is higher than a threshold value corresponding to the value of the maximum allowed working pressure for the lifting cylinder that would ensue in case the stabilizer leg is made to leave the active supporting position.