Hydraulic drive system
OwnerUlf Henricsoninventor
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Abstract
The invention relates to a hydraulic drive system comprising a plurality of hydraulically driven piston units with cam rollers, which are disposed to act against a wave-shaped cam profile of a cam curve element, so that linear movement of the cam rollers against the cam profile produces a relative driving movement between the cam element and the piston units. The characterizing feature of the invention is that the drive system is composed of separate, assembled cam curve element modules and separate assembled piston units.
Claims16
A hydraulic system for operating a heavy duty industrial working unit comprising:
- a plurality of hydraulically-driven piston units with cam rollers, which are disposed to act against a wave-shaped cam profile of a cam curve element so that a linear movement of the cam rollers against the cam profile produces a relative drive movement between the cam curve element and the piston units;
- said drive system being constructed of individual modules of cam curve elements mounted on a fixed support;
- and
- individual piston units being mounted on the working unit.
A hydraulic drive system for operating a heavy duty industrial working unit comprising:
- a plurality of hydraulically driven piston units with cam rollers, which are disposed to act against a wave-shaped cam profile of a cam curve element so that a linear movement of the cam rollers against the cam profile produces a relative drive movement between the cam curve element and the piston units;
- said drive system being constructed of individual modules of cam curve elements mounted on the working unit;
- and individual piston units mounted on a fixed support.
Dependencies are inferred from the claim text.