发明名称 |
COAL CAVING CYCLE |
摘要 |
A coal caving system (1) including a plurality of shields (3) with canopies (6) which are selectively operated to allow coal to cave onto a rear conveyor (37). In one aspect, the invention provides a shield control method including controlling the shield (3) to automatically open a door (6) associated with a rear canopy of the shield (3) responsive to a position of a shearer of the system.
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申请公布号 |
US2013187436(A1) |
申请公布日期 |
2013.07.25 |
申请号 |
US201213818059 |
申请日期 |
2012.03.19 |
申请人 |
WANG MAOHU MATTHEW;CHANDLER STEVEN |
发明人 |
WANG MAOHU MATTHEW;CHANDLER STEVEN |
分类号 |
E21C27/20;E21C41/18;E21D23/12 |
主分类号 |
E21C27/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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