Building or working machine with a working and/or control hydraulic system

摘要

For the automatic and load-dependent control of the power of a motor for driving pumps in hydraulic systems (6-9) it is proposed to connect the said system with a single-action cylinder (1) in a hydraulic manner, in which cylinder (1) and piston (2) can be displaced in relation to one another counter to the force of a spring (3) and the movement of the cylinder (1) or piston (2) can be coupled to the control of the motor. <IMAGE>