HYDROSTATIC ROTARY PISTON MACHINE HAVING INTERACTING TOOTH SYSTEMS

摘要

A hydrostatic rotary piston machine contains a displacement part acting as a driven part and an adjacent control part which serves to supply and removed operating fluid to and from the displacement part. The displacement part has a rigid housing with a first inner tooth system which interacts with a rotatable, eccentrically arranged rotary piston having a first outer tooth system. The rotary piston has a second inner tooth system which intermeshes with a second outer tooth system on a centrally mounted shaft which passes through the control part and is mounted at both ends. The difference is the number of teeth between the first inner tooth system and first outer tooth system is 1. The second inner and outer tooth system differ by at least two in the number of teeth, the outer tooth system always being that with the smaller number of teeth. A rotary commutator of the control part is coupled to the rotary piston via an arc gear having a transmission ratio of 1:1.