Hydraulic gear pump or motor with main gear pair (5) - has second compensation gear pair (5) with continuously meshing tooth pair(s)

摘要

The meshing tooth pair of the compensation gear pair (37) synchronously meshes with a corresp. tooth pair of the main gear pair (36). The main and compensation pair provide opposite delivery. The compensation gear pair tooth shape corresponds to a specified formula. In the formula relates to the distance of the just sealed engagement and rolling points of the main gear pair, the corresp. spacing of the compensation gear pair, and the transmission ratios of the main and compensation gear pairs. ADVANTAGE - Simple design for reducing pulsing of the delivery flow, but with relatively high constant flow portion.