| 摘要 |
<p>A cycle counter (12) for a pneumatic, or hydraulic, or electric apparatus (1), in particular for a pneumatic impact wrench, comprises a sensor (18) mounted inside the apparatus (1). The sensor (18) is configured for detecting a complete rotation performed by a rotor (6) included in the apparatus (1), and for generating, for each complete rotation detected, a cycle signal. The cycle counter (12) further comprises a processing unit (19) mounted inside the apparatus (1). The processing unit (19) is configured for communicating with the sensor (18) for receiving the aforesaid cycle signal and for processing, on the basis of this cycle signal, information on the use of the apparatus (1), for example a total number of cycles completed by the rotor (6) and/or a rotation direction of the rotor (6) and/or a total or partial working time of the apparatus (1) and/or a number of impacts for each cycle and/or a number of revolutions per minute of the rotor (6). This processing unit (19) comprises a memory card (20) configured for storing the information and making the information accessible to an operator. The sensor (18) is configured in such a manner as to generate the cycle signal when the detected complete rotation is performed at a speed that is lower than a preset reference speed, in particular a loadless rotation speed of the rotor (6).</p> |
