TREA

Propulsion of machines for slitting or completely freeing the mineral from the seam

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Industry

  • CPC
  • E21C29/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING

Current Industry

E21C29/00Propulsion of machines for slitting or completely freeing the mineral from the seam

Sub Industries

E21C29/02by means on the machine exerting a thrust against fixed supports E21C29/04by cable or chains E21C29/06anchored at one or both ends to the mine working face E21C29/08Anchoring arrangements E21C29/10Cable or chain co-operating with a winch or the like on the machine E21C29/12Machines propelled by thrust or pull against a part alternately anchored to and released from a cable or chain E21C29/14by haulage cable or chain pulling the machine along the working face E21C29/145Means for tensioning the haulage chains or cables E21C29/16Winches or other means for pulling cable or chain E21C29/18Coupling and uncoupling machine to cable or chain E21C29/185with coupling or uncoupling of the machine at will E21C29/20with safety devices operating in the event of breakage of the cable or chain E21C29/22by wheels, endless tracks or the like E21C29/24Trucks carrying the machine while working E21C29/26with means for adjustably positioning the machine on the truck E21C29/28adjusting the height of the whole machine
Industries

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