DEVICE FOR MEASURING ANGLE OF ROTATION OF DRILLING HEAD RELATIVELY TO ITS LONGITUDINAL AXIS Russian patent published in 2004 - IPC

FIELD: construction technology.

SUBSTANCE: device has measuring block in the navigation system of drilling head with rotation drive relatively to longitudinal axis of horizontal drilling device and converter of rods drive rotation angle into number of impulses, which is counted by a counter and shown by an indicator. In the head a radio sensor is placed, which is actuated by a ball freely placed in cylinder of sensor of drilling head rotation angle count starting time. Manually placed transmitter above the head receives signal from radio sensor and controls operation of counter, which drops impulses from converter to zero. By this an error of head rotation angle measurement is prevented, which occurs due to turning of rods column. Zero location of head rotation angle count start is fixed at the moment of passing of radio sensor by the ball. Such device for determining drilling head rotation angle increases measurements precision, because rods turning angle during rotation of drilling head in the soil is not taken into consideration.

EFFECT: higher precision of measurements, lesser costs, less time needed for well drilling.

2 cl, 2 dwg