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ROTARY HYDRAULIC PUMP AND TWO ROTOR TYPE ROTARY HYDRAULIC PUMP
ROTARY HYDRAULIC PUMP AND TWO ROTOR TYPE ROTARY HYDRAULIC PUMP
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机译：回转液压泵和两种转子式回转液压泵
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摘要
PROBLEM TO BE SOLVED: To provide a hydraulic pump for a hydraulic driving system provided with a hydraulic actuator which can prevent or reduce wear of a component part and has a simple structure.;SOLUTION: A hydraulic pump RA is constituted by arranging a first pump P1 and a second pump P2 in a casing 1. The first pump P1 and the second pump P2 have a common rotary shaft 2. The first pump P1 includes a cylindrical member 3, an eccentric rotor 4, a floating ring 5, a needle bearing 6, first and second vanes 7,8 and first to fourth actuation water supply/discharge ports 9 to 12. The eccentric rotor 4 is attached to the rotary shaft 2 or is integrally formed eccentrically in a radial direction so as to have a center axis parallel to a rotary shaft center axis. The floating ring 5 is arranged on a cylinder hollow part and is fitted onto the eccentric rotor 4.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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