| 摘要 |
<p>The hammer (2) comprises a jacket (3), in turn comprising: an inner chamber (32); an inlet circuit (4) for the entry of compressed air, and an outlet circuit (5) for the exit of compressed air. The hammer comprises a motion mechanism (7), for generating a vibratory motion under the action of compressed air; and a punch or beater (6), connected to said motion mechanism (7), for coming into contact with the casting to be de-cored, forming a first end of the hammer. The hammer further comprises a measurement circuit (8) adapted to measure the oscillation frequency of the motion circuit (7); Said measurement circuit (8) comprises: at least one sensor for measuring the oscillation frequency of the motion circuit(7); a processing circuit, enclosed in a protection casing (84), for receiving the electric signals transmitted by said at least one sensor, and a communication line (82) for conducting electric signal from and/or to said measurement circuit. Said jacket (3) comprises a housing (35) formed in the outer surface of the jacket (3), such that it incorporates within its own outer profile the protection casing (84) of the measurement circuit (8).</p> |
