Hydrostatic drive system

摘要

A hydrostatic drive system has a motor-driven hydraulic pump (1) connected to at least one hydraulic drive unit (7) by a first working line (19) and a second working line (21) forming a hydraulic circuit. The drive unit is connected to a gear set (1, 3). A first hydraulic accumulator (53) for accumulating pressure energy can be connected to one of the working lines (19, 21). A second hydraulic accumulator (55) can be connected to the other working line (19, 21). A valve device (V1, V2) permits the segment (23, 25) of each working line (19 or 21) extending to the drive unit (7) to be separated to separate an accumulator part (33) from the part of the circuit with the hydraulic pump (13). The accumulator part includes the hydraulic accumulators (53, 55) and at least one drive unit.

主权项

1. A hydrostatic drive system, comprising:
a motor-drivable hydraulic pump; first and second hydraulic drive units coupled to said hydraulic pump by first and second working lines forming a hydraulic circuit and dynamically coupled to one another operatively; a gear set connected to said drive unit; a first hydraulic accumulator for storage of pressure energy being connectable to said first working line; a second hydraulic accumulator being connectable to said second working line; and first and second valve devices in said first and second working lines, respectively, able to separate first and second segments of said first and second working lines, respectively, extending to and between said drive units to separate an accumulator part including said hydraulic accumulators and said drive unit from a part of said hydraulic circuit including said hydraulic pump.