Rock cracking heads with split wedges with reduced friction

摘要

The present invention relates to a head for rock cracking provided with a split wedge with reduced friction, and more specifically, since the split wedge is attached and fixed to both sides where friction occurs between the front and the rear of the split wedge. A pair of semi-segmented split bodies that rub against both sides of the split wedge where friction occurs have different materials of the parts that rub against each other, so the frictional force is drastically reduced, so the operation of descending and ascending of the split wedge is smooth and the hydraulic power remains as it is. Since it is required for the descending of the split wedge, a large rock cracking force is generated so that the head for rock cracking can be used efficiently, and the frictional force is reduced during operation, so the adhesion between the split wedge and a pair of semi-segmented bodies is adhered to. It is possible to be used without repair because it is prevented, and the maintenance cost is low, relates to a head for rock cracking provided with a split wedge with reduced friction.