PROTECTIVE SHIELD FOR SHIELD SUPPORT AND METHOD OF ITS MANUFACTURE Russian patent published in 2014 - IPC E21D23/04 

FIELD: construction.

SUBSTANCE: invention relates to the protective shield for shield support and method of its manufacture. Proposed protective shield has the cover plate 14, two connecting hinges 21 for connecting the protective shield with roof beam and pair couple 15 of side plates with two side plates (13, 16) with bayonet sockets (11, 12), respectively, for fixing levers of articulation linkage on the protective shield. In this case, each connecting hinge (21) for roof beam is the integral part of separately manufactured elongated structural assembly (20). Besides, the structural assembly at the front end has the projecting lug for the pin, and enters by the rear end into the intermediate space between the side plates (13, 16). In this case, the structural assembly (20) is rigidly welded to the side plates (13, 16) by means of welded seams at the joints between the structural assembly (20) and side plates (13, 16) and / or to the cover plate (14) by means of welded seams at the joints between structural assembly (20) and cover plate (14).

EFFECT: increase of bearing capacity of the protective shield under the influence of bending and torsion force, as well as simplification of process of its manufacture.

20 cl, 16 dwg