| 摘要 |
FIELD: machine building. ^ SUBSTANCE: test bench for hydraulic bottomhole motors (HBM) includes base 1, clamping devices 3 to fix HBM, pump 2, receiving service tank, braking disc device 4 with hydraulic clamp and hydraulic drive, braking moment sensor, control device, frame, brake calipers with hydraulic cylinders, brake disc, power shaft with fixed brake disc and rigidly attached to HBM outlet shaft. Braking disc device 4 includes support, at least two brake discs combined into a unit located inside the support on power shaft; the same number of pairs of calipers with hydraulic cylinders, which are rigidly connected to each other in each pair and enclosing each disc in the unit. Frame is movable and kinematically connected to brake calipers. Braking moment sensor is installed on the support opposite movable frame. Base 1 is made in the form of receiving service tank. ^ EFFECT: creation of general-purpose test bench with wide range of standard sizes of HBM without readjustment of the bench; increase in maximum braking torque moment, improvement of measurement accuracy and efficiency. ^ 3 cl, 3 dwg |
