The self-propelled construction machine according to the invention has a braking device which comprises at least one hydraulically actuated braking device actuating device 8 which has a pressure chamber 10A, 11A that can be acted upon with a hydraulic fluid. The braking device actuating device 8 is formed in such a way that, in a locking position, the running gear 3B, to which the braking device actuating device 8 is assigned, is braked, and, in an operating position, the running gear is unbraked. In addition, the construction machine according to the invention has a hydrostatic steering device 9, which comprises at least one hydraulic steering device actuating device 22. In the event of a malfunction in the supply of hydraulic fluid to the braking device actuating device 10, 11, the hydraulic system has a manually actuated emergency-operation valve arrangement 16 which is formed in such a way that, after the manual actuation thereof, a fluid connection is created between the steering device actuating device 22 and the pressure chamber 10A, 11A of the braking device actuating device 10, 11. The emergency-operation valve arrangement 16 has a valve block 27 in which flow paths are formed which can be shut off by means of shut-off screws 31, 32.
SELF-PROPELLED CONSTRUCTION MACHINE
15.04.2021
Patent
Elektronische Ressource
Englisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |