CATERPILLAR TREAD OF ROCK-DRILLING MACHINE Russian patent published in 2014 - IPC E21B7/02 B62D55/26 

FIELD: mining.

SUBSTANCE: invention relates to mining industry, and namely to self-propelled rock-drilling machines used for drilling of blast holes in open pits. A caterpillar tread of a rock-drilling machine includes a cast supporting plate with internal and external eye lugs. On outer surface of the supporting plate there are grousers, and on its inner surface there is a raceway and a traction grip hook, the symmetry axis of which coincides with the symmetry axis of the supporting plate. On outer surface of the supporting plate there is also an unloading component in the form of a slot on outer surface of the supporting plate under the internal eye lug symmetrically to the symmetry axis of a longitudinal plate for elimination of concentration of stresses in the internal eye lug, which occur after casting at manufacture of the supporting plate. At movement of a caterpillar truck wheel along the raceway, no wall deflection occurs.

EFFECT: achieving increase of carrying capacity of a structure without any increase of its metal consumption.

6 dwg