| 摘要 |
A water spray system particularly, but no exclusively, for mineral mining, comprising a pick (1) having an integral shank (4) by which it is releasably receivable in an aperture (17) of a block (16), a heel (7) extending rearwardly from the pick (1), a hole (9) passing through the heel (7) and a pair of spaced-apart cheeks extending beyond the hole, a spray nozzle (24) received in a bore (22) of the block (16) with a head (25) of the nozzle projection above an upper surface of the block (16) to a location between the cheeks (8), with a water discharge orifice of the head (25) so located beneath the heel (7) and with respect to the through hole (9) of the heel (7) that water discharged from the orifice into the through hole and exiting the through hole induces an air flow wholly or partially through the through hole. Other aspects of the invention are the pick (1), the block (6), a releasable latching system, and a drivable member. |
| 主权项 |
1. A cutter pick assembly comprising:
a cutter pick and a block; the cutter pick comprising a head adapted to hold a cutter bit, a shank extending in a longitudinal direction away from the head, and a heel extending away from the head transverse to the longitudinal direction, the heel comprising first and second sides separated by a thickness of the heel and a through-hole extending through the thickness of the heel, the through-hole having an intake end at the first side of the heel and a discharge end at the second side of the heel; the block comprising an aperture, a spray nozzle, and an outer surface, the aperture capable of receiving the shank and placing the cutter pick in an operating position when the shank is received in the aperture, the spray nozzle comprising an inlet for receiving water and a discharge orifice for discharge of water from the spray nozzle, the spray nozzle extending from the block away from the outer surface and locating the discharge orifice outside of the block; when the cutter pick is in the operating position:
a pair of cheeks extend from the first side of the heel away from the heel, the pair of cheeks being spaced apart from one another and defining a gap therebetween;the through-hole is disposed between the cheeks with the intake end of the through-hole facing the gap;the spray nozzle is between the cheeks with the discharge orifice in the gap, the discharge orifice being configured to spray water discharged from the nozzle through the through-hole; andthe outer surface of the block is adjacent the cheeks and extends between the cheeks, the outer surface and the cheeks defining a channel extending to the intake side of the through-hole, the channel being in fluid communication with the ambient environment. |
