Improvements Relating to Struts for Use with Mine Roadway Supports

摘要

Struts which are erected between adjacent mine roadway supports to resist lateral strata pressures can be securely attached to support members 10 which have not been prepared to receive other struts; a hooked bar 1 has slideable brackets 5, 8, 9 which can be located around the flanges of the adjoining roadway supports while a tube 7 encompasses the bar ensures the correct spacing between the supports, when a nut 12 is tensioned at the screw threaded end of the bar, the tension is transmitted by the tube thus causing the brackets, and hook to grip securely the roadway supports; this construction allows struts to be located anywhere around the periphery of the supports and will also stabilise new supports during erection in newly exposed areas. IMAGE