FIELD: mining.
SUBSTANCE: arched yielding support includes joined arched roof bar and telescopic legs with yielding assemblies. At the same time support as a whole is made of box-like section, and roof bar and telescopic legs are connected by means of hinged joint of single-sided action.
EFFECT: improved bearing capacity of support, possibility to fold support structure into transport-assembly position and to move it as a whole without disassembling inside mine from point of dismantling to point of installation, increased force of yielding assemblies actuation in compliance with bearing capacity of support and achievement of their stable operation.
3 dwg
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