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US 11,391,093 B2Granted
Apparatus, rock breaking machine and method of monitoring rock breaking machine
AssigneeSandvik Mining and Construction Oy
InventorErkki Anttila
Life of this patent
Estimating the term…
Abstract
A hydraulic rock breaking machine and an apparatus and method for monitoring operation of the same is provided. The apparatus includes at least one pneumatic sensor arranged for monitoring an inner space of the machine and at least one control unit configured to receive and process the pneumatic sensing data.
Claims12
A hydraulic rock drilling machine arranged to be mounted to a work machine, the rock drilling machine comprising:
- a body;
- a percussion device mounted inside the body, the percussion device being hydraulically operated, whereby a reciprocating percussion piston of the percussion device is moved by means of pressurized hydraulic fluid, and the percussion device being configured to generate impact pulses by means of the reciprocating piston to a drilling tool mountable to a front end of the body;
- at least one apparatus for sensing prevailing fluid pressure inside the rock drilling machine, wherein the apparatus includes at least one pressure sensing device arranged for sensing pressure of fluid inside the rock drilling machine, and at least one control unit configured to receive sensed pressure data from the at least one pressure sensing device, wherein the control unit is configured to process the received sensing data and to provide monitoring data in accordance with a control strategy input to the control unit;
- an oil mist lubrication system arranged for providing pressurized air-oil mist flow, the oil mist lubrication system being disposed inside the body;
- and
- at least one sensor of the at least one pressure sensing device being arranged for sensing pneumatic pressure of the air-oil mist prevailing inside the body and arranged to monitor pneumatic pressure fluctuation caused by the hydraulically movable piston of the hydraulic percussion device.
3 more elements
A method for monitoring operation of a hydraulic rock drilling machine, the method comprising:
- providing the rock drilling machine with at least one sensing device for providing pressure data for the monitoring;
- providing pressurized air-oil mist flow inside a body of the rock drilling machine to lubricate the rock drilling machine;
- sensing pneumatic pressure of the prevailing air-oil mist inside the body of the rock drilling machine by means of the at least one sensing device;
- transmitting the sensed pneumatic pressure data to at least one control unit;
- and
- processing the sensed pneumatic pressure data in the control unit and generating monitoring data.
3 more elements
Dependencies are inferred from the claim text.