HYDRAULIC HAMMER HAVING IMPROVED SEAL RING

PURPOSE: A hydraulic hammer is provided to extend a term of replacement for a seal ring installed between a piston and a cylinder by improving a seal ring. CONSTITUTION: A hydraulic hammer includes: a cylinder(140) having a fluid groove(143) connected with a fluid passage(163); a piston(160) recipro...

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Bibliographic Details
Main Author LEE GUN JIK
Format Patent
LanguageEnglish
Korean
Published 01.07.2000
Edition7
Subjects
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Summary:PURPOSE: A hydraulic hammer is provided to extend a term of replacement for a seal ring installed between a piston and a cylinder by improving a seal ring. CONSTITUTION: A hydraulic hammer includes: a cylinder(140) having a fluid groove(143) connected with a fluid passage(163); a piston(160) reciprocally installed in the cylinder; a first seal ring(162) installed in a first seal ring groove(142) formed in the inner face of the cylinder spacing apart from the fluid groove while guiding lifting of the piston in contact with the piston; and a second seal ring(164) installed in a second seal ring groove(144) opposed to the first seal ring while having at least one of grooves and holes for passage of a fluid. Fluid in upper portion of the second seal ring groove flows to the fluid groove via grooves(165) of the second seal ring. According to the two seal rings formed in the inner face of the cylinder, life span of the seal ring of the hydraulic hammer is lengthened. 본 발명은 피스톤에 접촉되는 실링(seal ring)의 구조가 개선된 유압헤머에 관한 것으로서, 유체가 흐르는 유로와 연결된 유체홈(143)이 내주면에 형성된 실린더(140); 왕복이동 가능하도록 실린더(140) 내부에 설치된 피스톤(160); 유체홈(143)과 소정 간격 이격되도록 실린더(140)의 내주면에 형성된 제1실링홈에 설치되고, 피스톤(160)과 접촉되면서 피스톤(160)의 승강을 안내하는 제1실링(162); 및 유체홈을 중심으로 제1실링과 대칭되도록 실린더(140)에 형성된 제2실링홈에 설치되며, 유체가 통하는 적어도 하나의 홈 또는 구멍이 형성된 제2실링(164);을 구비한다. 따라서, 본 발명은 피스톤과 실린더 사이에 설치되는 실링의 교체 주기가 연장되어 유압헤머의 유지비용을 줄일 수 있다.
Bibliography:Application Number: KR19970024200