公开(公告)号：EP0086040B1

公开(公告)日：1987-06-03

申请号：EP83300181.1

申请日：1983-01-14

申请人： G-D M & C Limited

发明人： Radford, Leonard ,  Joel, George

IPC分类号： E21C35/18 ,  E21C35/22

CPC分类号： E21C35/187

公开(公告)号：EP0121020A1

公开(公告)日：1984-10-10

申请号：EP83306662.4

申请日：1983-11-02

申请人： G-D M & C Limited

发明人： Thorpe, John Douglas ,  Joel, George

IPC分类号： E21C35/18 ,  E21C35/22

CPC分类号： E21C35/187

摘要： The combination of a mineral mining pick and a pick holder. The pick (1) has a shank (4) by which it is received in a socket (6) of a pick holder (2). Extending within the socket (6) is a spigot (13) which mates with a coupling socket (14) in the shank (4) automatically as the shank is inserted into the pick holder. During insertion of the spigot (13) into the socket (14), a frusto conical head (26) on the spigot passes through a resilient ring (25) mounted in an annular recess (24) of the coupling socket so that abutment of a shoulder (27) on the head (26) against the ring (25) retains the pick in the holder.
The spigot (13) may be tubular to provide a watercoupl- ing from chamber (23) in the holder to passage (11) and ports (12) in the pick forflushing, cooling or dust suppression water supply. The resilient retaining ring (25) may provide a water seal between the spigot (13) and the socket (14).
In an alternative arrangementthe spigot can be carried by the shank (4) to engage in a coupling socket in the holder (2).

公开(公告)号：EP0121020B1

公开(公告)日：1988-04-06

申请号：EP83306662.4

申请日：1983-11-02

申请人： G-D M & C Limited

发明人： Thorpe, John Douglas ,  Joel, George

IPC分类号： E21C35/18 ,  E21C35/22

CPC分类号： E21C35/187

公开(公告)号：EP0086040A2

公开(公告)日：1983-08-17

申请号：EP83300181.1

申请日：1983-01-14

申请人： G-D M & C Limited

发明人： Radford, Leonard ,  Joel, George

IPC分类号： E21C35/18 ,  E21C35/22

CPC分类号： E21C35/187

摘要： Mineral mining apparatus comprisng a pick head 1 mounted on a pick holder 4 for displacement of a cutting part 5 in the direction of arrow A has a none 9 in the head 1 through which nozzle water is sprayed to dust suppression, cooling or flushing purposes. The characteristics of the nozzle 9 provide the spray 22 with a flat einfiguration where the width y of the spray is greater than its depth x. Preferably the width y lies in the cutting plane 20 of the cutting part and the spray follows the cutting part to deviate incendive sparking.
In a modification the nozzle 9 can be mounted on the holder 4.