BUSHING FOR HYDROSTATIC OR HYDRODYNAMIC BEARINGS, HYDRAULIC MACHINE EQUIPPED WITH SUCH BUSHING, AND INSTALLATION METHOD OF BUSHING ON SHAFT Russian patent published in 2014 - IPC F16B31/04 

FIELD: machine building.

SUBSTANCE: bushing is designed for tight fit around a shaft of a hydraulic machine in order to form a part of hydrostatic or hydrodynamic bearings. It includes at least one first section, at least one second section and installation means of the first and the second sections around the shaft. Each section includes two end surfaces attaching outer and inner radial surfaces. The first section is equipped at least with one threaded part accessible through the end surface and having the possibility of receiving a screw from end surface of the second section. Screw is equipped on some part of its rod projecting out of the second section at least with one relief element to perform rotation of the rod for its screwing or unscrewing in thread. Screw is equipped with a piston sliding in a seat made in the second section and leading to the end surface of the second section and isolated from outer space with a bearing. The second section is equipped with fluid medium supply means under pressure to a variable volume chamber formed between the piston and the bearing inside the seat.

EFFECT: easier installation of a sleeve with formation of an internal part of hydrostatic or hydrodynamic bearings without any need for additional machining.