Demountable pin and collet assembly and method to securely fasten a ranging arm to a longwall shearer using such assembly
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United States of America Patent
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Mar 17, 2015
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N/A
app pub date -
Oct 10, 2012
filing date -
Oct 14, 2011
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Abstract
A pin-and-collet assembly, a longwall shearer comprising a ranging arm attached to a lifting bracket with such assembly, a method for the secure fastening of one piece to another, such as securely fastening the ranging arm to the lifting bracket of a longwall shearer using such assembly as a bushing, and a method for longwall mining of ore, such as trona, using such longwall shearer. This assembly is easy to install, does not have to be tightened during longwall operation of an ore panel, and is also demountable when it is time to stop the longwall mining operation and time to remove/replace the ranging arm for maintenance and/or when the end of the ore panel is reached.
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