Patent ID: 8752374

Claim:
An adjustment device for adjusting a stroke volume of hydraulic piston engines having a bent-axis design, comprising: a first piston engine ( 1 ) being arranged adjacent to a second piston engine ( 2 ), the first and the second piston engines each having a working line ( 3 ) by which the first and the second piston engines are hydraulically connected to one another, the piston engines having adjustable axes connected by a common component ( 4 ) such that movement of the common component ( 4 ) simultaneously adjusts the adjustable axes, whereby in a first position of the common component ( 4 ), the first hydraulic piston engine ( 1 ) is adjusted to one of a small and a no stroke volume and the second hydraulic piston engine ( 2 ) is adjusted to one of a large and a maximum stroke volume, and in a second position of the common component ( 4 ), the first hydraulic engine ( 1 ) is adjusted to one of a large and a maximum stroke volume and the second hydraulic piston engine ( 2 ) is adjusted to one of a small and a minimal stroke volume, a device ( 5 ) for adjusting the common component ( 4 ) is a hydraulic cylinder; the common component ( 4 ) is adjustable toward one of a first position and a second position as a function of a rotational speed specification ( 20 ); the common component ( 4 ) is adjustable toward the first position independently of the rotational speed specification ( 20 ) when a previously defined pressure in one of the working lines ( 3 ) is exceeded; an electronic control unit ( 19 ) controls the device for adjusting the common component ( 4 ) as a function of the position of the common component, as a function of a pressure in the working line and as a function of the speed specification; and a manual pressure limit adjuster ( 22 ) is present by which the common component ( 4 ), upon actuating the manual pressure limit adjuster ( 22 ), is adjusted toward the first position as a function of the pressure in the working lines ( 3 ) and as a function of the actuation of the manual pressure limit adjuster ( 22 ).