Alarm device that main shaft coal prevention for repetitive clear of a signal loaded
The utility model discloses an alarm device that main shaft coal prevention for repetitive clear of a signal loaded, including body subassembly and transportation assembly, the body subassembly includes lifting machine, bracing piece, drive machine, pivot, driving chain, gear frame and gusset plate,...
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Format: | Patent |
Sprache: | chi ; eng |
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