Computation and structural methods to expand feed channels in planetary hydraulic machines

• Published in: Journal of physics. Conference series Vol. 1210; no. 1; pp. 12131 - 12137
• Main Authors: Smirnov, V V, Volkov, G U
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.03.2019
• Subjects: Channels; Configurations; Cross-sections; Design modifications; Hydraulics
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1210/1/012131

Planetary Rotor Hydraulic Machines (PRHM) with wave-shaped central gearwheels and floating satellites show notable engineering performance, at the same time, this subject lack in-depth study. A methodology of computing cross-sections of feed channels that supply power fluid has been devised to embrace a variety of modifications of planetary hydraulic machines. Design formulas have been proposed, and a comparative assessment has been performed related to the channel cross-section criterion. Locating channels in the sun gearwheel (having a lesser number of waves M) contributes to expanding channels. In the cases when channels are in the epicyclic gearwheel (N being the wave number), the following configurations M×N have been discovered as preferential: 6×8; 4×6; 2×4. A design concept to expand channel cross-sections by means of sequentially joining two PRHM stages of the same type has been studied. This concept is more efficient in the cases when configurations have the same number M=N and their sun gearwheel and epicycle are related as 2×2; 3×3.