Bent axis type variable displacement hydraulic machine

Details Bent axis type variable displacement hydraulic machine Bent axis type variable displacement hydraulic machine

1990-07-16

1992-03-10

Bertsch, Richard A.

Motors: expansible chamber type

Three or more cylinders arranged in parallel radial or...

Motive fluid bypass to or from assembly

91499, 91504, F01B 1304, F16C 3206

Patent

active

050941445

ABSTRACT:
A bent axis type variable displacement hydraulic machine employing hydrostatic radial bearings for supporting hydraulic reaction forces exerted on the cylinder block. In a hydraulic machine of this sort, the number of pistons which are located in the high pressure are varies with the rotation of the cylinder block, and the resultant force of hydraulic reaction forces has an acting point at a position off the axis of the rotational shaft. Therefore, the hydrostatic radial bearings are located in such positions as to balance the moment loads which occur about the rotational shaft in relation with the acting point of the resultant force of radial hydraulic reaction forces on the drive disc of the rotational shaft. As a result, it becomes possible to lead to suppression of oil leaks from the sliding surfaces to a minimal rate and to prevent abnormal abrasive wear of each of the sliding surfaces.

REFERENCES:
patent: 2967491 (1961-01-01), Wiggermann
patent: 4024799 (1977-05-01), Forster
patent: 4464979 (1984-08-01), Forster
patent: 4546692 (1985-10-01), Lotter
patent: 4788902 (1988-12-01), Akasaka

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