STAND FOR ON/OFF TURNING OF THREADED JOINTS OF DOWNHOLE HYDRAULIC MOTORS Russian patent published in 2004 - IPC

FIELD: mechanical engineering.

SUBSTANCE: invention relates to equipment for servicing of downhole hydraulic motors, namely, for on/off turning of threaded joints. Novelty is that in known stand for on/off turning of threaded joints of downhole hydraulic motors including frame, cartridge drive power plant with motion section of hydraulic downhole motor installed in cartridge, movable rear retainer with possibility of mounting motion section, support carriage installed on frame and power plant to drive movable rear retainer, according to invention movable rear retainer consists of two units: base and retaining device secured on base against tilting back by means of at least two grips. Said retaining device has cartridge with eccentric cams and gear rim installed on cartridge shaft which is connected with pneumatic cylinder arranged in retaining device by means of which retaining device can be shifted crosswise relative to base and turned relative to surface of base through angle equal to angle of deflection of motion section relative to spindle section of downhole hydraulic motor. Torque meters are installed on retaining device.

EFFECT: enlarged operating capabilities of stand owing to on-off turning of threaded joints on stand with deflector.

3 dwg