SHUTTLE SELECTOR AND HYDRAULIC DRIVEN COMPRESSOR Russian patent published in 2008 - IPC F04B35/02 F04B39/10 

FIELD: mechanical engineering; compressor building.

SUBSTANCE: device is designed for building high pressure. Proposed shuttle selector has hollow housing and opposite equal-diameter cylinders connected with housing and provided with holes with unions in bottom plates. Shuttle mechanism is made in form of pistons fitted in cylinders and connected by common rod. Slot is made in rod to accommodate roller hinge connected with rocker. Rocker is provided with sliding hollow bushing connected with rocker by hinge joint. Inner surface of housing is provided with ring step. Spring is installed between step and bushing. End of rocker opposite to roller is hinge-connected with fixed insert thrusting against housing bottom by means of lever. Shackle hinge-connected with rocker and working member of external device is arranged between hinge joint of end of rocker opposite to roller and hinge joint of bushing. Cylinders have additional holes with unions in side walls in zone of selector housing. Hydraulically driven compressor includes, pump, coaxially arranged compressor cylinder and two hydraulic cylinder with rigidly interconnected pistons and two main oil lines connecting pump with hydraulic cylinders. Compressor is furnished additionally with shuttle selector of above-indicated design and two-step spool hydraulic boosting distributor consisting of spools of first and second stages. Shackle of shuttle selector is connected with plunger of first stage spool. Unions in bottom of one of cylinders of shuttle selector and in side wall of same cylinder are connected by pipelines with one of main oil lines in zone of hydraulic cylinder. Unions in bottom and side wall of other cylinder of shuttle selector are connected with second main oil line. Restricting devices are located between points of connection of main oil lines.

EFFECT: simplified design, improved reliability of hydraulically driven compressor in operation.

3 cl, 1 dwg