PROTECTIVE VISOR FOR SHIELD-TYPE POWERED SUPPORT Russian patent published in 2015 - IPC E21D23/04 

FIELD: mining.

SUBSTANCE: invention relates to a protective visor for the shield-type powered support for underground development of massive material. The protective visor comprises a plate (2) and a support structure (5) which is welded under the plate (2) and comprising a plurality of longitudinal beams extending from the rear area (1A) of the visor to the front area (1B) the visor. And at least two longitudinal beams consist of profiled supports (6, 16) having an upper flange (7, 17) of the profile and a wall (9, 19) extending perpendicular to the upper flange (7, 17) of the profile, and the plate (2) and the profiled supports (6, 16) are inclined upwards in the front area (1B) of the visor.

EFFECT: weight reduction with simultaneous increase in the flexural strength of the protective visor of the shield-type powered support.

15 cl, 7 dwg