公开(公告)号：US20230212836A1

公开(公告)日：2023-07-06

申请号：US17927713

申请日：2021-11-05

申请人： MAPP CO., LTD.

发明人： Mun Gyo JEONG

IPC分类号： E02F3/96 ,  E01C23/12

CPC分类号： E02F3/966 ,  E01C23/124

摘要： The present invention provides a chisel for a hydraulic breaker that is installed inside the hydraulic breaker and struck by a reciprocating piston, including a chisel body having a shaft structure provided with a horn-shaped crushing portion at a lower end; and a stress distribution portion that is provided with a concave-convex form in which a plurality of grooves and protrusions are alternately formed on an outer circumferential surface of the chisel body in a longitudinal direction, and disperses a stress wave transmitted from an upper side to a lower side of the chisel body by striking of the piston and a stress wave transmitted from the lower portion to the upper portion of the chisel body by striking of a crushing portion to a crushed object.