Bolzenartiges Bauelement zur Bestimmung von Zug- oder Druckkräften

摘要

A component (17) for determining the force (F) acting on a movable, force-transmitting draft (upper, top) link (20) of a tractor housing (10) has a measuring system (25) in its longitudinal bore (24). The measuring system (25) has a permanent magnet (26), which is arranged in the direction of the acting force (F), and one Hall element (28, 29) each above and below in the region of the tensile and compressive stresses, respectively. Changes in the permeability of the wall of the component (17) which occur under stress lead to a change in the magnetic field lines (lines of force) which penetrate the Hall elements (28, 29). The voltages thereby produced yield a signal which is proportional to the acting force.