FIELD: mining.
SUBSTANCE: invention relates to means of crushing underlying rocks. In particular, proposed hydraulic hammer comprises: main unit (200); sensor unit (100) having a vibration sensor (310) which measures vibration in main unit (200) when the objects to be crushed, including the underlying rocks, are crushed to output a measurement signal, and a wireless transmitter (320) wirelessly outputting the measurement signal; and a control unit (300) receiving the measurement signal from sensor unit (100) to calculate the time during which main unit (200) vibrates, and thereby calculating the operating time. Vibration sensor (310) comprises metal housing (411), ledge (412) formed on housing upper end (411), a pair of ferromagnetic displacement elements (413), fixed under protrusion (412) to create a working point for electronic material, metal cover (414) closing upper part of housing (411), ceramic insulator (415) attached to lower surface of metal cover (414), metal electrode (416) inserted into housing (411) through metal cover (414) and ceramic insulator (415), and magnetic ball (417) coming into contact and coming out of contact with metal electrode (416) to obtain corresponding signal. At that, ceramic insulator (415) is provided for control of magnetic field intensity between metal cover (414) and magnetic ball (417).
EFFECT: expansion of arsenal of equipment for crushing rocks.
5 cl, 7 dwg
