Patent ID: 8622719
Filing Date: 2014-01-07
Classification: F03B,F03D,F04B,F05B,Y02E,Y02P,Y10T

Abstract:
1. A hydraulic pump structure for a wind turbine generator or a tidal current generator which comprises a hub equipped with a plurality of blades, a main shaft connected to the hub and a hydraulic pump mounted on the main shaft, the hydraulic pump structure comprising: a hydraulic pump unit including wherein the hydraulic pump body comprises: wherein the hydraulic pump unit is configured such that the cylindrical member unitized with the hydraulic pump body is insertably fixed to the main shaft, wherein the cylindrical member has a large diameter section and small diameter sections disposed on both ends of the large diameter section, the ring cam is arranged on an outer circumferential side of the large diameter section, and the pump bearing is mounted on stepped portions between the large diameter section and the small diameter sections.