HYDRAULIC HAMMER

• Main Author: LEE GUN JIK
• Format: Patent
• Language: English; Korean
• Published: 01.07.2000
• Edition: 7
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; HAND TOOLS; MANIPULATORS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PERCUSSIVE TOOLS; PERFORMING OPERATIONS; PORTABLE POWER-DRIVEN TOOLS; TRANSPORTING

PURPOSE: A hydraulic hammer is provided to reduce repeated bending stress applied to a hammer assembly by improving structure of a buffer assembly. CONSTITUTION: A hydraulic hammer comprises: a top cover plate(114) combined to upper portion of a housing(112); a hammer assembly(120) placed in the housing; a top buffer(140) installed in contact with upper portion of the hammer assembly and made up of a material elastically deformed to absorb a shock generated from the hammer assembly; a slide plate(144) interposed between the top buffer and the top cover plate; a top buffer plate(146) interposed between the top buffer and the slide plate to be restrained from deforming; and a connecting member(148) fixed in a hole formed in the center of the top buffer plate, and of which a portion is inserted into holes formed in the top buffer and the slide plate. The buffer assembly absorbs a shock transmitted from the hammer assembly while rotating the upper portion of the hammer assembly by centering on a front head(122). As the slide plate rotates while sliding on the top buffer plate, bending stress applied to the hammer assembly is reduced. 본 발명은 유압헤머에 관한 것으로서, 하우징(112)의 상부에 결합되는 톱커버플레이트(114); 하우징(112)의 내부에 위치되는 헤머조립체(120); 헤머조립체(120)의 상부에 접촉되도록 설치되며 탄성 변형되면서 헤머조립체(120)로부터 발생되는 충격을 흡수하는 물질로 만들어진 톱버퍼(140); 톱버퍼(140)와 톱커버플레이트(114) 사이에 개재되는 미끄럼플레이트(146); 탄성 변형되지 않도록 톱버퍼(140)와 미끄럼플레이트(144) 사이에 개재된 톱버퍼플레이트(146); 및 톱버퍼플레이트(146)의 중심에 형성되는 구명에 고정되며, 톱버퍼(140)와 미끄럼플레이트(144)에 형성되는 구멍에 일부가 삽입되는 연결부재(148);를 구비한다.