sensor bolt for dynamometry as well as a method for dynamometry in the case of an industrial truck

摘要

The present invention relates to a sensor bolt 13 for dynamometry as well as a equipped in this way the industrial truck. The sensor bolt 13 has a sensor element 1 is formed of a material having a function of external forces by variable light material properties, which in a an optical light path between a light source and a light receiver 7 is arranged. The sensor element 1 is connected to a force receiving device in, mechanical connection. In accordance with a preferred embodiment the sensor element 1 between a main shells part 5 and a the form of shells part 6 is inserted, the by bearing shells 3 and 4 is secured. Through the sensor element 1, which, for example, can be designed as the epoxide core, a light beam of a light source arranged in an end cap 2 (for example, led) and transmitted by a in a housing 8 arranged light receiver 7 detects. In the case of a loading of the form of shells part 6 by means of an external force f deforms the epoxide core of the sensor element 1 and the light transmission is reduced. The change of the light signal can be detected by the light receiver 7 and, for example, be evaluated by a subsequent signal processing device.