| 摘要 |
<p>This installation comprises on the one hand a horizontal bench (2) equipped with a longitudinal slot (23) for a stop (4), which is mobile and lockable in position and capable of supporting the handle of the key, on the other hand an upper plate (3) which, supporting, with interposition of force meters, drive means of the square of the key, is integral with a vertical shaft mounted freely rotatably in the bench (2), and also a lever (7) arranged in the bench, one of the ends of which is articulated about the vertical shaft of the upper plate (3) and the other end of which supports an internally threaded nut (8) into which there is screwed a transverse threaded control rod (10), and lastly a block for analysis of the signals of the meters and for display of the torque measured. <IMAGE></p> |
