Overload protection for a top-pan balance

摘要

The invention proposes an overload protection, in which, via an auxiliary parallel guide, the balance pan (2) is connected to a load sensor (3) of a low-displacement measuring system virtually rigidly within the permissible weighing range and elastically flexibly when the permissible weighing range is exceeded. At the same time, the auxiliary parallel guide consists of two angle levers (5 and 6) which are rotationally mounted parallel to one another in the same orientation on a bottom plate (4) connected rigidly to the load sensor (3) and the vertical lever arms of which are coupled to one another in an articulated manner by means of at least one horizontal rod (7) and the horizontal lever arms of which carry bearing points (8) for the balance pan (2). <IMAGE>