Device for adjusting the stroke volume of hydraulic piston machines

摘要

A device for adjusting the swept volume of a first piston machine (1), of transverse axis design, and a second piston machine (2), of transverse axis design. The device including a common component (4), via which the swept volumes can be adjusted, and a valve (12) which, when a maximum pressure level in the working lines (3) is exceeded, can be rerouted in such a way that the common component (4) reroutes the swept volume in a direction toward the lower power input.

主权项

1. A device for adjusting a swept volume of a hydraulic piston machine of a transverse axis design comprising:
a first piston machine (1) arranged adjacent to a second piston machine (2), working lines (3) hydraulically connecting the first and the second piston machines to one another, and a common component (4) connected to adjustable axles on each of the first and the second piston machines such that the adjustable axles are simultaneously adjusted by movement of the common component (4); wherein a common component adjuster facilitates adjustment of a position of the common component (4) into first and second positions, and
in the first position of the common component (4), the first hydraulic piston machine (1) is adjusted to one of a small and a zero swept volume and the second hydraulic piston machine (2) is adjusted to one of a large and a maximum swept volume, and,in the second position of the common component (4), the first hydraulic piston machine (1) is adjusted to one of a large and a maximum swept volume and the second hydraulic piston machine (2) is adjusted to one of a small and a minimum swept volume; depending on an input from a first manual input device (10), the common component (4) is adjusted in one of a direction toward the first position and in a direction toward the second position; independently of the manual input (10), the common component (4) is adjusted, in the direction toward the first position if a predefined pressure is exceed in one of the working lines (3); an additional manual input device (22) is provided; and when the additional manual input device (22) is actuated, the common component (4) is adjusted in the direction toward the first position as a function of both a pressure in the working lines (3) and the actuation of the additional manual input device (22) such that with an unchanged actuation of the manual input device (10) and with actuation of the additional manual input device (22), the common component (4) is adjusted in the direction of the first position at a lower pressure in the working lines (3) than in a case of the additional manual input device (22) being un-actuated.