KR101977511B1 - Pin Retainer of Hydraulic Breaker - Google Patents

Pin Retainer of Hydraulic Breaker Download PDF

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Publication number
KR101977511B1
KR101977511B1 KR1020170181912A KR20170181912A KR101977511B1 KR 101977511 B1 KR101977511 B1 KR 101977511B1 KR 1020170181912 A KR1020170181912 A KR 1020170181912A KR 20170181912 A KR20170181912 A KR 20170181912A KR 101977511 B1 KR101977511 B1 KR 101977511B1
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KR
South Korea
Prior art keywords
insertion hole
hydraulic breaker
pin
present
portions
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Application number
KR1020170181912A
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Korean (ko)
Inventor
전용오
Original Assignee
주식회사 비케이에스
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Priority to KR1020170181912A priority Critical patent/KR101977511B1/en
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Publication of KR101977511B1 publication Critical patent/KR101977511B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/005—Attachments or adapters placed between tool and hammer
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2222/00—Materials of the tool or the workpiece
    • B25D2222/72—Stone, rock or concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/051—Couplings, e.g. special connections between components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/105—Exchangeable tool components
    • B25D2250/111—Bits, i.e. inserts or attachments for hammer, chisel, pick
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/351—Use of pins

Abstract

The present invention relates to a pin fixing device for a hydraulic breaker, which is combined with an insertion hole into which a stop pin of a hydraulic breaker is inserted to seal the hole. The present invention comprises: first and second support parts forcibly inserted into the inner edge surface of the insertion hole, having a semicircular shape and formed to be symmetrical to a predetermined separation groove placed therebetween; first and second hanging parts protruding from the outer surface of the first and second support parts and formed to be symmetrical to be hung on a hanging groove formed on the inner edge surface of the mouth of the insertion hole; and a head part integrated with an end of the first and second hanging parts while having a smaller diameter than the diameter of the insertion hole, and extended or contracted. According to the present invention, a combination hole can be sealed to prevent a chisel pin or stop pin from being separated from a body; manufacturing costs can be saved; and the chisel pin or stop pin can be taken out of the insertion hole for replacement and then combined again to be reused, so costs for maintenance can be saved.

Description

유압브레이커의 핀 고정장치{Pin Retainer of Hydraulic Breaker}[0001] DESCRIPTION [0002] Pin Retainer of Hydraulic Breaker [

본 발명은 유압브레이커의 핀 고정장치에 관한 것으로, 더욱 상세하게는 치즐의 타격운동에 의해 대상물을 파쇄하는 유압브레이커에 있어서 치즐의 타격운동시 이탈을 방지하기 위해 결합되는 핀의 삽입구멍을 막아 밀봉시키는 핀 고정장치에 관한 것이다.The present invention relates to a pinching device for a hydraulic breaker, and more particularly, to a hydraulic breaker for crushing an object by impact motion of a chisel, To a pin fixing device.

일반적으로 타격기기인 유압브레이커는 실린더 내의 피스톤이 유압에 의하여 상하운동을 반복함에 따라 하단에 장착된 치즐(chisel)을 타격하고, 타격을 받은 치즐이 콘크리트나 암반 등을 타격하여 파쇄하도록 구성된다. Generally, a hydraulic breaker as a striking device is configured such that a piston in a cylinder repeatedly moves up and down by hydraulic pressure to strike a chisel mounted on the lower end, and the struck chisel hits concrete and rock.

유압 브레이커는, 도 1에 나타낸 바와 같이, 승강작동되는 피스톤(미도시)이 내부에 형성된 본체(1)와, 상기 본체(1)의 하단부에 결합되어 피스톤에 연동되어 고속으로 승강작동되는 치즐(100)과, 상기 본체(1)가 삽입되어 지지되는 케이스(2)를 포함하여 구성된다. As shown in Fig. 1, the hydraulic breaker includes a main body 1 having a piston (not shown) operated to be lifted and lowered, a chisel (not shown) coupled to a lower end of the main body 1, 100), and a case (2) in which the main body (1) is inserted and supported.

피스톤은 본체(1)에 공급되는 유압 및 가스에 의해 상하 왕복 운동을 반복하며, 이에 연동되어 치즐(100)이 대상물을 타격하게 된다. The piston repeats up-and-down reciprocating motion by the hydraulic pressure and gas supplied to the main body 1, and the chisel 100 strikes the object by interlocking therewith.

본체(1) 내에 치즐(100)이 삽입되어 결합되는데, 치즐(100)이 빠져나오지 않도록 본체(1)의 측면에 형성된 삽입공(102)에 복수개의 치즐핀(150')이 끼워지고, 치즐핀(150')이 빠져나오지 않도록 본체(1)의 양측에 스톱핀(130')을 끼워 치즐핀(150')의 양단부를 막는다. The chisel 100 is inserted into the main body 1. The plurality of chisels 150 'are inserted into the insertion hole 102 formed in the side surface of the main body 1 so as to prevent the chisel 100 from coming out, Both ends of the cigarette 150 'are closed by holding the stop pin 130' on both sides of the main body 1 so that the gulp 150 'does not come out.

스톱핀(130')이 삽입되는 통공(H)에는 핀 고정장치(A')를 결합시켜 밀봉시킨다.The pin fixing device A 'is engaged and sealed in the through hole H where the stop pin 130' is inserted.

한편 종래 기술에 따른 핀 고정장치로는, 한국 등록실용신안 20-0282018호가 공개되어 있다. 상기 선행기술을 비탄성 부재로 된 한쌍의 고정부와, 한쌍의 고정부 사이에 삽입되는 탄성체로 구성되여 이종 재질을 접합시켜 형성된 것이다. On the other hand, as a pin fixing device according to the prior art, Korean Registered Utility Model No. 20-0282018 is disclosed. The prior art is made up of a pair of fixing parts made of an inelastic member and an elastic body inserted between the pair of fixing parts, and made of different materials.

종래 기술은 제조 비용이 상승하게 되고, 이종 재질간의 박리현상이 발생되는 문제점이 있었다. The conventional technology has a problem in that the manufacturing cost is increased and the peeling phenomenon occurs between different kinds of materials.

한국 등록실용신안 20-0282018호Korea registered utility model 20-0282018

본 발명은 종래 기술의 문제점을 해소하기 위해 안출된 것으로, 치즐핀 또는 스톱핀이 본체로부터 이탈되지 않도록 결합공을 밀봉시키도록 결합되되 제조 비용이 절감될 수 있도록 단일 소재로 형성되며, 스톱핀이나 치즐핀을 교체한 후에도 재사용될 수 있도록 하는 유압브레이커의 핀 고정장치를 제공하는데 그 목적이 있다. SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems of the prior art, and it is an object of the present invention to provide a stop pin and a stop pin which are formed of a single material so as to seal a coupling hole, And it is an object of the present invention to provide a pin fixing device for a hydraulic breaker which can be reused even after replacing the chisel pin.

상기한 본 발명의 목적은, 유압브레이커의 스톱핀이 삽입되는 삽입공에 결합되어 밀봉시키는 것으로, 상기 삽입공의 내주면에 억지끼움되며, 반원형으로 이루어지고 소정의 이격홈을 사이에 두고 양측에 대칭 형성되는 제1,2지지부; 상기 제1,2지지부의 외면에 돌출 형성되며 삽입공의 입구 내주면에 형성된 걸림홈에 걸려지도록 대칭 형성되는 제1,2걸림부; 상기 제1,2걸림부의 일단에 일체로 상기 삽입공의 직경보다 작은 직경으로 형성되며 신축되는 머리부;를 포함하는 유압브레이커의 핀 고정장치에 의해 달성될 수 있다. It is an object of the present invention to provide a hydraulic breaker which is coupled to and sealed with an insertion hole into which a stop pin of a hydraulic breaker is inserted so as to be pressed against the inner circumferential surface of the insertion hole, First and second supporting portions formed; First and second fastening portions protruding from an outer surface of the first and second support portions and symmetrically formed to be engaged with a fastening groove formed on an inner circumferential surface of an insertion hole of the insertion hole; And a head portion formed at one end of the first and second fastening portions and having a diameter smaller than the diameter of the insertion hole integrally and expanding and contracting.

상기 이격홈은 제1,2지지부의 사이에 형성되되 일단부는 머리부까지 형성되는 것을 특징으로 한다. The spacing groove is formed between the first and second support portions, and one end portion is formed up to the head portion.

상기 제1,2걸림부는 양 측면이 절개되어 수직한 절개면이 양측에 각기 대칭 형성되고, 상기 양측 절개면의 간격길이는 삽입공의 직경보다 작게 형성되어 삽입공과 통하는 슬릿공이 형성되는 것을 특징으로 한다. Wherein the first and second fastening portions have slit openings communicating with the insertion holes, wherein the slit openings are formed symmetrically on both sides of the first and second fastening portions on both sides, and the interval length of the first and second fastening portions is smaller than the diameter of the insertion holes. do.

상기 머리부는 양 측면이 절개되어 수직하게 측단면이 형성되고, 상기 측단면은 제1,2걸림부의 절개면과 직각되는 위치에 대칭 형성되는 것을 특징으로 한다. The head portion is formed with a side surface vertically cut on both sides and the side surface is symmetrically formed at a position perpendicular to the cut surface of the first and second fastening portions.

상기 머리부는 제1,2걸림부 및 제1,2지지부 보다 연질의 소재로 이루어지는 것을 특징으로 한다. And the head portion is made of a material softer than the first and second fastening portions and the first and second support portions.

상기 머리부의 재질은 천연고무 20~30중량%, 네오프렌 10~20중량%, 폴리우레탄 30~40중량%, 폴리아미드 2~4중량%, 폴리에스테르 2~4중량%, 부틸아크릴-2에틸헥실아크릴레이트메틸메타크릴산-아크릴실란공중합체 10~12중량%를 혼합하여 이루어진 것을 특징으로 한다. Wherein the material of the head is 20 to 30 wt% of natural rubber, 10 to 20 wt% of neoprene, 30 to 40 wt% of polyurethane, 2 to 4 wt% of polyamide, 2 to 4 wt% of polyester, Acrylate methyl methacrylate-acrylic silane copolymer in an amount of 10 to 12% by weight.

상기 제1,2걸림부 및 제1,2지지부는 아크릴로니트릴 스티렌 아크릴레이트와, 알파메틸스티렌 아크릴로니트릴의 혼합물인 것을 특징으로 한다. The first and second fastening portions and the first and second supporting portions are a mixture of acrylonitrile styrene acrylate and alpha methylstyrene acrylonitrile.

본 발명에 따르면, 치즐핀 또는 스톱핀이 본체로부터 이탈되지 않도록 결합공을 밀봉시킬 수 있고, 제조 비용이 절감될 수 있으며, 스톱핀이나 치즐핀을 교체하기 위해 삽입공에서 뻬낸 후 다시 결합시켜 재사용될 수 있으므로 유지비용이 절감될 수 있는 효과가 있다.According to the present invention, it is possible to seal the engaging hole so that the chisel pin or the stop pin is not separated from the main body, the manufacturing cost can be reduced, and the reusable engaging member can be reused after replacing the stop pin or the chisel pin, The maintenance cost can be reduced.

도 1은 유압 브레이커를 나타낸 분해사시도,
도 2는 본 발명에 따른 유압브레이커의 핀 고정장치의 설치된 상태를 보여주는 평면도,
도 3 및 도 4는 본 발명에 따른 유압브레이커의 핀 고정장치를 나타낸 사시도,
도 5는 본 발명에 따른 유압브레이커의 핀 고정장치가 삽입공에 결합된 상태를 삽입공의 내부에서 본 정면도,
도 6은 본 발명에 따른 유압브레이커의 핀 고정장치의 결합 및 분리 작동을 나타낸 확대 단면도,
도 7은 본 발명에 따른 유압브레이커의 핀 고정장치의 다른 실시예를 나타낸 도면.1 is an exploded perspective view showing a hydraulic breaker,
2 is a plan view showing an installed state of the pin fixing device of the hydraulic breaker according to the present invention,
3 and 4 are perspective views showing a pin fixing device of a hydraulic breaker according to the present invention,
FIG. 5 is a front view of a state in which the pin fixing device of the hydraulic breaker according to the present invention is coupled to the insertion hole,
6 is an enlarged cross-sectional view illustrating the operation of engaging and disengaging the pin fixing device of the hydraulic breaker according to the present invention,
7 is a view showing another embodiment of a pin fixing device of a hydraulic breaker according to the present invention.

이하 본 발명의 바람직한 실시예를 첨부된 도면을 토대로 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

이에 앞서, 후술하는 용어들은 본 발명에서의 기능을 고려하여 정의된 것으로서, 이는 본 발명의 기술적 사상에 부합하는 개념과 당해 기술분야에서 통용 또는 통상적으로 인식되는 의미로 해석되어야 함을 명시한다.Before describing the present invention, it is to be understood that the following terms are defined in consideration of the functions of the present invention, and that they should be construed in accordance with the technical idea of the present invention and interpreted in a general sense or commonly understood in the technical field.

또한, 본 발명과 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다.In the following description, well-known functions or constructions are not described in detail to avoid obscuring the subject matter of the present invention.

여기서, 첨부된 도면들은 기술의 구성 및 작용에 대한 설명과 이해의 편의 및 명확성을 위해 일부분을 과장하거나 간략화하여 도시한 것으로서, 각 구성요소가 실제의 크기와 정확하게 일치하는 것은 아니다.Here, the attached drawings are exaggerated or simplified in order to facilitate understanding and clarification of the structure and operation of the technology, and the components do not exactly coincide with actual sizes.

첨부된 도면 중에서, 도 1은 유압 브레이커를 나타낸 분해사시도, 도 2는 본 발명에 따른 유압브레이커의 핀 고정장치의 설치된 상태를 보여주는 평면도, 도 3 및 도 4는 본 발명에 따른 유압브레이커의 핀 고정장치를 나타낸 사시도, 도 5는 본 발명에 따른 유압브레이커의 핀 고정장치가 삽입공에 결합된 상태를 삽입공의 내부에서 본 정면도, 도 6은 본 발명에 따른 유압브레이커의 핀 고정장치의 결합 및 분리 작동을 나타낸 확대 단면도, 도 7은 본 발명에 따른 유압브레이커의 핀 고정장치의 다른 실시예를 나타낸 도면이다.FIG. 1 is an exploded perspective view showing a hydraulic breaker, FIG. 2 is a plan view showing a state in which a pin fixing device of a hydraulic breaker according to the present invention is installed, FIGS. 3 and 4 are views showing a pin fixing FIG. 5 is a front view of the pinch fixing device of the hydraulic breaker according to the present invention as viewed from the inside of the insertion hole when the pinch locking device is coupled to the insertion hole, FIG. 6 is a front view of the pinch fixing device of the hydraulic breaker according to the present invention And FIG. 7 is a view showing another embodiment of the pin fixing device of the hydraulic breaker according to the present invention.

도 1 내지 도 7에 나타낸 바와 같이, 본 발명에 따른 유압브레이커의 핀 고정장치(A)는, 유압브레이커의 스톱핀(130')이 삽입되는 삽입공(H)에 결합되어 밀봉시키는 것으로, 상기 삽입공(H)의 내주면에 억지끼움되며, 반원형으로 이루어지고 소정의 이격홈(3)을 사이에 두고 양측에 대칭 형성되는 제1,2지지부(2,2'); 제1,2지지부(2,2')의 외면에 돌출 형성되며 삽입공(H)의 입구 내주면에 형성된 걸림홈(H-3)에 걸려지도록 대칭 형성되는 제1,2걸림부(4,4'); 제1,2걸림부(4,4')의 일단에 일체로 상기 삽입공(H)의 직경보다 작은 직경으로 형성되며 신축되는 머리부(6);를 포함하여 구성된다. 1 to 7, the pin fixing device A of the hydraulic breaker according to the present invention is coupled to the insertion hole H into which the stop pin 130 'of the hydraulic breaker is inserted, First and second support portions (2, 2 '), which are semi-circularly formed on the inner circumferential surface of the insertion hole (H) and symmetrically formed on both sides with a predetermined spacing groove (3) therebetween; The first and second fastening portions 4 and 4 protrude from the outer surfaces of the first and second support portions 2 and 2 'and are symmetrically formed so as to be caught by the engagement grooves H-3 formed on the inner peripheral surface of the insertion hole H '); And a head portion 6 formed at one end of each of the first and second fastening portions 4 and 4 'and having a diameter smaller than the diameter of the insertion hole H and being expanded and contracted.

제1,2지지부(2,2')는 삽입공(H)의 내주면에 밀착되고, 제1,2걸림부(4,4')는 제1,2지지부(2,2')에 각기 연속 형성되되 제1,2지지부(2,2')로부터 외측으로 경사면(40)이 형성되어 제1,2걸림부(4,4')에 이어지도록 형성된다. The first and second support portions 2 and 2 'are in close contact with the inner circumferential surface of the insertion hole H and the first and second retaining portions 4 and 4' are connected to the first and second support portions 2 and 2 ' The inclined surface 40 is formed outwardly from the first and second supporting portions 2 and 2 'so as to extend to the first and second engaging portions 4 and 4'.

한편 도 7에 도시된 바와 같이, 제1,2지지부(2,2')는 외면에 돌기(25)가 형성될 수 있다. Meanwhile, as shown in FIG. 7, protrusions 25 may be formed on the outer surface of the first and second support portions 2, 2 '.

돌기(25)가 삽입공(H)의 내주면에 더욱 강하게 밀착됨으로써 기밀성능이 향상될 수 있다. The airtightness performance can be improved by making the projection 25 more tightly contact with the inner circumferential surface of the insertion hole H.

상기 이격홈(3)은 제1,2지지부(2,2')의 사이에 형성되되 일단부는 머리부(6)까지 형성된다. The spacing groove 3 is formed between the first and second support portions 2 and 2 ', and one end portion is formed up to the head portion 6.

상기 제1,2걸림부(4,4')는 삽입공(H)의 입구 내주면에 형성된 걸림홈(H-3)에끼워져 결합되도록 돌출 형성되고, 양 측면이 수직으로 절개되어 수직한 절개면(20)이 양측에 각기 대칭 형성된다.The first and second fastening portions 4 and 4 'are protrudingly formed to engage with the engaging grooves H-3 formed on the inner circumferential surface of the insertion hole H, both sides of which are vertically cut, (20) are symmetrically formed on both sides.

따라서 제1,2걸림부(4,4')의 양측 절개면(20)의 간격길이는 삽입공(H)의 직경보다 작게 형성됨으로써 도 5에 나타낸 바와 같이, 삽입공(H)과 통하는 슬릿공(H-2)이 형성된다. Therefore, the length of the interval between the both side cut surfaces 20 of the first and second fastening portions 4, 4 'is formed to be smaller than the diameter of the insertion hole H, A hole H-2 is formed.

상기 절개면(20)과 삽입공(H)의 내주면과 이격된 슬릿공(H-2)을 통해 공기가 소통될 수 있어 본 발명에 따른 유압브레이커의 핀 고정장치(A)를 삽입공(H)에 억지끼움시킨 후 빼낼때도 진공 상태가 되지 않게 되므로 빼내기가 용이하게 된다. Air can be communicated through the slit hole H-2 spaced apart from the cut surface 20 and the inner peripheral surface of the insertion hole H so that the pin fixing device A of the hydraulic breaker according to the present invention is inserted into the insertion hole H So that it can not be vacuumed and can be easily removed.

상기 머리부(6)는 양 측면이 절개되어 수직하게 측단면(60)이 형성되고, 상기 측단면(60)은 제1,2걸림부(4,4')의 절개면(20)과 직각되는 위치에 대칭 형성된다. The side face 60 is formed perpendicularly to the cut face 20 of the first and second fastening portions 4 and 4 ' As shown in FIG.

제1,2걸림부(4,4')의 절개면(20)의 형성으로 인해 원형의 단면적에서 절개된 부분을 머리부(6)의 호형 부위가 보상해줄 수 있도록 하여 형성된다. The incised portion 20 of the first and second fastening portions 4 and 4 'is formed so that the arc-shaped portion of the head 6 can compensate for the incised portion in the circular cross-sectional area.

측단면(60)은 머리부(6)를 롱노우즈 플라이어와 같은 공구를 잡기 위해 형성된 것으로, 공구를 양 측단면(60)에 협지시켜 가압하면 머리부(6)가 압축되면서 그에 연동되어 제1,2걸림부(4,4') 및 제1,2지지부(2,2')가 오므려지면서 수축되는 것이다. The side end face 60 is formed to hold the head 6 such as a long nose pliers. When the tool is pressed against the both side end faces 60 and pressed, the head 6 is compressed, The second engaging portions 4, 4 ', and the first and second supporting portions 2, 2' are contracted.

상기 머리부(6)는 제1,2걸림부(4,4') 및 제1,2지지부(2,2') 보다 연질의 소재로 이루어진다. The head 6 is made of a material softer than the first and second fastening portions 4, 4 'and the first and second support portions 2, 2'.

따라서 머리부(6)의 양 측단면(60)을 공구로 잡고 눌러 가압시키면 수축되면서 제1,2걸림부(4,4') 및 제1,2지지부(2,2')가 오므려지게 되어 이격홈(3) 쪽으로 밀려 이동되고 삽입공(H)의 내주면으로부터 이격될 수 있다. Therefore, when the both end faces 60 of the head 6 are pressed and pressed by the tool, the first and second engaging portions 4, 4 'and the first and second supporting portions 2, 2' And can be pushed toward the spacing groove 3 and spaced from the inner circumferential surface of the insertion hole H. [

상기 머리부(6)의 재질은 천연고무 20~30중량%, 네오프렌 10~20중량%, 폴리우레탄 30~40중량%, 폴리아미드 2~4중량%, 폴리에스테르 2~4중량%, 부틸아크릴-2에틸헥실아크릴레이트메틸메타크릴산-아크릴실란공중합체(butylacryl-2ethylhexylacrylatemethylmethacryl acid-acrylsilanecopolymer) 10~12중량%를 혼합하여 이루어진다. The head 6 is made of 20 to 30% by weight of natural rubber, 10 to 20% by weight of neoprene, 30 to 40% by weight of polyurethane, 2 to 4% by weight of polyamide, 2 to 4% 2-ethylhexyl acrylate methyl methacrylate-butylacryl-2ethylhexylacrylate methylmethacryl acid-acrylsilanecopolymer.

천연고무가 20중량% 미만이면 탄성력이 저하되고, 30중량% 이상이면 과 탄성 상태가 되어 내구성이 저하된다.When the natural rubber is less than 20% by weight, the elasticity is lowered, and when it is 30% by weight or more, the natural rubber is in an over-elastic state and durability is lowered.

네오프렌은 합성고무인 클로로프렌의 상표명으로써 네오프렌이 10중량% 미만이면 탄성력이 저하되고, 20중량% 이상이면 과 탄성 상태가 되어 내구성이 저하된다. Neoprene is a trade name of chloroprene which is a synthetic rubber. When neoprene is less than 10% by weight, elasticity is lowered, and when it is 20% by weight or more, it is overstretched and durability is lowered.

폴리우레탄은 30중량% 미만이면 탄성력, 내마모성, 내노화성이 저하되고, 40중량% 이상이면 과도한 탄성력으로 인해 내구성이 저하된다. When the polyurethane content is less than 30% by weight, the elasticity, abrasion resistance and aging resistance deteriorate. When the polyurethane content is 40% by weight or more, durability is deteriorated due to excessive elasticity.

폴리아미드는 2중량% 미만이면 충격흡수력과 유연성이 낮아질 우려가 있고, 4중량% 이상이면 충격흡수력과 유연성이 과하게 되어 고정력이 저하될 우려가 있다. If the amount of the polyamide is less than 2% by weight, the impact absorbing ability and the flexibility may be lowered. If the amount is 4% by weight or more, the impact absorbing ability and the flexibility may be excessively increased.

폴리에스테르는 2중량% 미만이면 강도가 저하될 우려가 있고, 4중량% 이상이면 강도가 너무 강하여 파손될 위험성이 높아진다. If the content of the polyester is less than 2% by weight, there is a fear that the strength is lowered. If the content is more than 4% by weight, the strength is too strong and the risk of breakage increases.

부틸아크릴-2에틸헥실아크릴레이트메틸메타크릴산-아크릴실란공중합체(butylacryl-2ethylhexylacrylatemethylmethacryl acid-acrylsilanecopolymer)는 온도변화에도 물질의 혼합결합과 점성을 안정되게 유지시킬 수 있고, 방오성, 방식성, 내후성, 내열성, 전기절연성, 신장성과 균일한 경화성 및 부착력을 강화시키게 된다. Butyl acryl-2-ethylhexyl acrylate methyl acrylate-butylacryl-2ethylhexylacrylatemethylmethacrylic acid-acrylsilanecopolymer is capable of stably maintaining the mixing and viscosity of the substance even when the temperature is changed, and is excellent in antifouling property, Heat resistance, electrical insulation, elongation, uniform curability, and adhesion.

부틸아크릴-2에틸헥실아크릴레이트메틸메타크릴산-아크릴실란공중합체가 10중량% 미만이면 방오성, 방식성, 내후성, 내열성, 전기절연성이 저하될 우려가 있고, 12중량% 이상이면 방오성, 방식성, 내후성, 내열성, 전기절연성이 과도하게되는 우려가 있다. When the content of the butyl acryl-2-ethylhexyl acrylate methyl methacrylate-acryl silane copolymer is less than 10% by weight, there is a fear that the antifouling property, the corrosion resistance, the weather resistance, the heat resistance and the electric insulation property are lowered. , Weather resistance, heat resistance, and electric insulation may be excessive.

한편 상기 제1,2걸림부(4,4') 및 제1,2지지부(2,2')는 아크릴로니트릴 스티렌 아크릴레이트 30~50중량%와, 알파메틸스티렌 아크릴로니트릴 50~70중량%의 혼합물로 이루어진다. The first and second fastening portions 4 and 4 'and the first and second supporting portions 2 and 2' may be formed by a combination of 30 to 50 wt% of acrylonitrile styrene acrylate, 50 to 70 wt% of alphamethylstyrene acrylonitrile %.

아크릴로니트릴 스티렌 아크릴레이트는 내후성 및 내노화성이 우수한 열가소성 수지이다. Acrylonitrile styrene acrylate is a thermoplastic resin excellent in weather resistance and aging resistance.

아크릴로니트릴 스티렌 아크릴레이트가 30중량% 미만이면 내후성과 내노화성이 저하되고, 50중량% 이상이면 비탄성도가 높아져 파손될 위험이 높아진다. If the content of acrylonitrile styrene acrylate is less than 30% by weight, the weather resistance and aging resistance deteriorate. If the acrylonitrile styrene acrylate content is more than 50% by weight, the inelasticity increases and the risk of breakage increases.

알파메틸스티렌 아크릴로니트릴은 내열성 및 가공성이 우수한 수지이다. Alphamethylstyrene acrylonitrile is a resin having excellent heat resistance and processability.

알파메틸스티렌 아크릴로니트릴이 50중량% 미만이면 내열성, 가공성이 저하되고, 70중량% 이상이면 비탄성도가 높아져 파손될 위험이 높아진다. When the amount of alpha-methylstyrene acrylonitrile is less than 50% by weight, heat resistance and workability are deteriorated. When the amount of alpha-methylstyrene acrylonitrile is more than 70% by weight, the inelasticity increases and the risk of breakage increases.

이와 같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Hereinafter, the operation of the present invention will be described.

유압브레이커의 삽입공(H)에 스톱핀(130')을 삽입한 후 삽입공(H)을 마감하기 위해 본 발명에 따른 스톱핀 고정장치(A)를 억지끼움시켜 결합한다. After the stop pin 130 'is inserted into the insertion hole H of the hydraulic breaker, the stop pin fixing device A according to the present invention is tightly engaged to close the insertion hole H.

따라서 제1,2지지부(2,2')가 삽입공(H)의 내주면에 억지끼움으로 밀착 결합되고, 좀더 머리부(6)를 타격하면 제1,2걸림부(4,4')가 삽입공(H)의 입구 내주면에 형성된 걸림홈(H-3)에 삽입되어 안정적으로 결합된 상태가 된다. The first and second support portions 2 and 2 'are tightly coupled to the inner circumferential surface of the insertion hole H by interference fit. When the head portion 6 is further struck, the first and second retaining portions 4 and 4' Is inserted into the engaging groove (H-3) formed on the inner circumferential surface of the inlet of the insertion hole (H-3) and is stably engaged.

한편 스톱핀(130')을 교체하기 위해서 본 발명에 따른 스톱핀 고정장치(A)를 삽입공(H)으로부터 탈거하기 위해서는 머리부(6)의 양 측단면(60)에 공구를 협지시켜 가압하면 머리부(6)가 수축되면서 그에 연동되어 제1,2걸림부(4,4') 및 제1,2지지부(2,2')가 오므려지면서 수축되므로 걸림홈(H-3)으로부터 이격될 수 있고, 이 상태에서 외측으로 잡아당기면 삽입공(H)의 외측으로 빼내어 분리시킬 수 있다. In order to detach the stop pin fixing device A according to the present invention from the insertion hole H in order to replace the stop pin 130 ', a tool is pinched on both side end surfaces 60 of the head part 6, The first and second support portions 4 and 4 'and the first and second support portions 2 and 2' are contracted while the head portion 6 is contracted and interlocked with the first and second support portions 2 and 2 ' And when pulled out in this state, it can be pulled out of the insertion hole H and separated.

이렇게 스톱핀 고정장치(A)를 삽입공(H)으로부터 빼낸 후 스톱핀(130')을 교체한다.After the stop pin fixing device A is removed from the insertion hole H, the stop pin 130 'is replaced.

이후 스톱핀 고정장치(A)를 삽입공(H)에 다시 억지끼움으로 결합시켜 재사용할 수 있게 된다. The stop pin fixing device A can be coupled again to the insertion hole H by interference fit and reused.

한편, 본 발명은 상술한 실시 예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 안에서 예시되지 않은 여러 가지 변형과 응용이 가능함은 물론 구성요소의 치환 및 균등한 타실시 예로 변경할 수 있으므로 본 발명의 특징에 대한 변형과 응용에 관계된 내용은 본 발명의 범위 내에 포함되는 것으로 해석되어야 할 것이다.While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

2 : 제1지지부 2' : 제2지지부
4 : 제1걸림부 4' : 제2걸림부
6 : 머리부 H : 삽입공
20 : 절개면 60 : 측단면
3 : 이격홈 130' : 스톱핀
150' : 치즐핀
2: first supporting part 2 ': second supporting part
4: first engaging part 4 ': second engaging part
6: Head H: Insertion ball
20: incision surface 60: side surface
3: spacing groove 130 ': stop pin
150 ': chisel pin

Claims (6)

유압브레이커의 스톱핀이 삽입되는 삽입공에 결합되어 밀봉시키는 것으로,
상기 삽입공의 내주면에 억지끼움되며, 반원형으로 이루어지고, 이격홈을 사이에 두고 양측에 대칭 형성되는 제1,2지지부;
상기 제1,2지지부의 외면에 돌출 형성되며 삽입공의 입구 내주면에 형성된 걸림홈에 걸려지도록 대칭 형성되는 제1,2걸림부;
상기 제1,2걸림부의 일단에 일체로 상기 삽입공의 직경보다 작은 직경으로 형성되며 신축되는 머리부;를 포함하고,
상기 이격홈은 제1,2지지부의 사이에 형성되되 일단부는 머리부까지 형성되고,
상기 제1,2걸림부는 양 측면이 절개되어 수직한 절개면이 양측에 각기 대칭 형성되며,
상기 양측 절개면의 간격길이는 삽입공의 직경보다 작게 형성되어 삽입공과 통하는 슬릿공이 형성되는 것을 특징으로 하는 유압브레이커의 핀 고정장치. And the stopper pin of the hydraulic breaker is coupled to the insertion hole into which the stopper pin is inserted,
First and second support portions which are semi-circularly formed on the inner circumferential surface of the insertion hole and symmetrically formed on both sides of the spacing groove;
First and second fastening portions protruding from an outer surface of the first and second support portions and symmetrically formed to be engaged with a fastening groove formed on an inner circumferential surface of an insertion hole of the insertion hole;
And a head portion formed at one end of the first and second fastening portions integrally with a diameter smaller than the diameter of the insertion hole,
The spacing groove is formed between the first and second support portions, and one end portion is formed up to the head portion,
The first and second fastening portions are formed on both sides of each of the cut-out surfaces,
Wherein a slit hole communicating with the insertion hole is formed so that an interval length between the two incision surfaces is smaller than a diameter of the insertion hole. 삭제delete 제 1항에 있어서,
상기 머리부는 양 측면이 절개되어 수직하게 측단면이 형성되고,
상기 측단면은 제1,2걸림부의 절개면과 직각되는 위치에 대칭 형성되는 것을 특징으로 하는 유압브레이커의 핀 고정장치. The method according to claim 1,
Wherein the head portion is formed with a side end portion perpendicularly cut on both sides,
Wherein the side end faces are symmetrically formed at a position perpendicular to the cut face of the first and second fastening portions. 제 1항에 있어서,
상기 머리부는 제1,2걸림부 및 제1,2지지부 보다 연질의 소재로 이루어지는 것을 특징으로 하는 유압브레이커의 핀 고정장치. The method according to claim 1,
Wherein the head portion is made of a material softer than the first and second fastening portions and the first and second support portions. 삭제delete 삭제delete
KR1020170181912A 2017-12-28 2017-12-28 Pin Retainer of Hydraulic Breaker KR101977511B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200282018Y1 (en) 2001-12-20 2002-07-19 주식회사수산중공업 Apparatus for holding the position of pin
KR20110026906A (en) * 2009-09-09 2011-03-16 서경자 Chisel fixing apparatus
KR101026130B1 (en) * 2010-06-11 2011-04-07 한립철강(주) Hydraulic breaker
KR20170103726A (en) * 2013-10-30 2017-09-13 롯데첨단소재(주) Thermoplastic resin composition having improved weather resistance
KR20170133410A (en) * 2015-03-31 2017-12-05 사빅 글로벌 테크놀러지스 비.브이. Flame Retardant Composition, Process for its Preparation and Articles Including Such

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200282018Y1 (en) 2001-12-20 2002-07-19 주식회사수산중공업 Apparatus for holding the position of pin
KR20110026906A (en) * 2009-09-09 2011-03-16 서경자 Chisel fixing apparatus
KR101026130B1 (en) * 2010-06-11 2011-04-07 한립철강(주) Hydraulic breaker
KR20170103726A (en) * 2013-10-30 2017-09-13 롯데첨단소재(주) Thermoplastic resin composition having improved weather resistance
KR20170133410A (en) * 2015-03-31 2017-12-05 사빅 글로벌 테크놀러지스 비.브이. Flame Retardant Composition, Process for its Preparation and Articles Including Such

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