| 摘要 |
<p>The invention relates to a process and installation for indirectly measuring an exterior load, applied between a hydraulic motor and the driven working machine. According to the invention, the process consists in measuring the motor force, mechanically summmed up with the exterior one, where from there is subtracted, at the transducer signal level, the motor force measured by means of the motor pressure drop. According to the invention, the installation consists of a load transducer (3), placed at the level of the couple of the working machine (4), which measures a load resulting by mechanically summing up, at the level of the shafts (2), the force of the motor (1) with the exterior one, and an adder (6), at the transducer signal level, carries out the reverse operation, by subtracting from the signal of the load transducer (3), the signal of a pressure transducer (5), thus there being obtained a signal proportional to the exterior measuring force. The invention has applicability in automatic electrohydraulic systems for taking over the forces, by avoiding the direct measuring thereof, this fact involving constructive complications when implementing the transducers, associated with diminishing the system rigidity.</p> |
