METHOD OF CONTROLLING CLAMPING HYDRAULIC CYLINDERS AND TEST BENCH FOR SCREWING ON/OFF THREAD JOINTS OF HYDRAULIC DOWNHOLE MOTORS Russian patent published in 2012 - IPC B23B31/30

Abstract RU 2449861 C2

FIELD: process engineering.

SUBSTANCE: set of invention relates to machine building, particularly, to hydraulic systems. Operating fluid is fed into hydraulic cylinders 3 of clamping chuck 8 by hydraulic control valve 2 from hydropneumatic accumulator 6. Note here that the latter is arranged in clamping chuck 8 and coupled by means of hydraulic lock 7 provided with decompressor.

EFFECT: decreased leaks from moving joints.

2 cl, 4 dwg

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RU 2 449 861 C2

Authors

Samojlov Aleksej Viktorovich

Dates

2012-05-10—Published

2010-05-04—Filed