KR920006031Y1 - Connecting device for boom in excavator - Google Patents

Connecting device for boom in excavator Download PDF

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Publication number
KR920006031Y1
KR920006031Y1 KR2019890011493U KR890011493U KR920006031Y1 KR 920006031 Y1 KR920006031 Y1 KR 920006031Y1 KR 2019890011493 U KR2019890011493 U KR 2019890011493U KR 890011493 U KR890011493 U KR 890011493U KR 920006031 Y1 KR920006031 Y1 KR 920006031Y1
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South Korea
Prior art keywords
bushing
arm
buoy
hole
excavator
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KR2019890011493U
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Korean (ko)
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KR910004406U (en
Inventor
지용권
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삼성중공업 주식회사
김연수
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Priority to KR2019890011493U priority Critical patent/KR920006031Y1/en
Publication of KR910004406U publication Critical patent/KR910004406U/en
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Publication of KR920006031Y1 publication Critical patent/KR920006031Y1/en

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36Component parts
    • E02F3/369Devices to connect parts of a boom or an arm

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

내용 없음.No content.

Description

우레탄고무부싱을 사용한 굴삭기의 부움연결구조Buoy Connection Structure of Excavator Using Urethane Rubber Bushing

제1도는 본 고안의 일부 분해사시도.1 is an exploded perspective view of a part of the present invention.

제2도는 본 고안 요부의 확대사시도.2 is an enlarged perspective view of the main part of the present invention.

제3도는 종래 연결구조의 단면도이다.3 is a cross-sectional view of a conventional connection structure.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 부움브래킷 2 : 연결구멍1: buoy bracket 2: connection hole

3 : 연결구멍 4 : 요홈3: connection hole 4: groove

5 : 부싱하우징 6 : 내부구멍5 bushing housing 6 inner hole

7 : 돌기 8 : 부싱7: protrusion 8: bushing

9 : 관통구멍 10 : 회동핀9 through hole 10 rotating pin

11 : 쐐기링 A : 굴삭기본체11: wedge ring A: excavating base body

B : 부움 C : 아암B: pour C: arm

D : 버킷D: Bucket

본 고안은 굴삭기의 부움연결구조에 관한 것으로, 특히 자기윤활성과 내구성이 우수한 우레탄고무부싱을 사용한 굴삭기의 부움연결구조에 관한 것이다.The present invention relates to the boom connection structure of the excavator, and more particularly to the boom connection structure of the excavator using a urethane rubber bushing excellent in self-lubrication and durability.

일반적으로 굴삭기의 부움연결구조로서, 예컨대 본체와 부움, 부움과 아암, 또는 아암과 버킷등의 상호연결은, 이들 각 구성부품의 대응되는 선단에 연결구멍이 형성되어, 이 연결구멍에 금속제 부싱과 회동핀이 끼워져 이들을 매개로 상기 구성부품들이 서로 회동하면서 작동하도록 되어 있다. 즉 종래의 부움연결구조는, 구성부품의 대응되는 연결구멍에 제3도에 도시된 바와 같은 부싱하우징(21)이 끼워지면서, 이 부싱하우징(21) 내부구멍에는 금속제부싱(22)을 매개로 회동핀(23)이 끼워지고, 이 부싱(22)의 내주면에는 나선형의 급유홈(24)이 형성되어, 상기 부싱하우징(21)의 바깥족으로 관통하여 설치된 주유구(25) 및 니플(26)로부터 그리이스등과 같은 윤활유를 공급받아 부싱(22)의 내주면에 윤활막이 형성시켜져 상기 구성부품의 회전동작이 원활히 이루어지도록 되어 있다.In general, as a buoyant connection structure of an excavator, for example, the main body, the buoy, the buoy and the arm, or the arm and the bucket, the interconnection is formed with a connection hole formed at the corresponding tip of each of these components, Rotating pins are fitted so that the components rotate and operate with each other. That is, in the conventional boom connecting structure, a bushing housing 21 as shown in FIG. 3 is fitted into a corresponding connection hole of a component, and a metal bushing 22 is provided in the inner hole of the bushing housing 21. Rotating pin 23 is fitted, and a spiral oil supply groove 24 is formed on the inner circumferential surface of the bushing 22, and the oil hole 25 and the nipple 26 penetrated to the outer side of the bushing housing 21 are provided. Lubricating oil, such as grease, is supplied to form a lubricating film on the inner circumferential surface of the bushing 22 to smoothly rotate the components.

그런데, 상기와 같은 부움연결구조는, 상기 부싱(22) 이 황동이나 청동재질 또는 탄소강을 경화처리한 재질로 제작되기 때문에 생산단가가 비싸고, 또 상기에서와 같이 니플(26)을 통해 그리이스등과 같은 윤활유를 정기적으로 주유해주어야 하는 번거로움이 있을 뿐만 아니라, 이들 윤활유가 연결구조 밖으로 흘러나오게 되면 이에 흙이나 기타 이물질이 부착되게 되어 외관을 해치게 되므로서, 상기 연결구조에 이물질이 침입하는 것을 차단하기 위한 밀봉링등을 별도 설치해야 하게 되는 등의 결점이 있었다.By the way, the buoyancy connection structure as described above is expensive because the bushing 22 is made of a hardened brass or bronze material or carbon steel material, and the grease and the like through the nipples 26 as described above. Not only is there a hassle to lubricate the same lubricant regularly, but when these lubricants flow out of the connection structure, dirt or other foreign matters are attached to it, which damages the appearance, thereby preventing foreign substances from entering the connection structure. There was a defect such as the need to install a separate sealing ring for.

이에 본 고안은 상기와 같은 제반 결점을 해결하기 위해 안출된 것으로, 부움의 상단에 부착된 부움브래킷의 연결구멍과 아암의 상단부 가까이에 형성된 연결구멍을 관통해서 내면에 요홈이 형성된 부싱하우징이 끼워지고, 이 부싱하우징의 내부구멍에는 상기 요홈에 끼워져 걸려지도록 돌기가 돌출형성되면서, 자기 윤활성이 우수한 우레탄고무재질로 된 부싱이 끼워지며, 이 부싱의 관통구멍에는 상기 부움과 아암이 회동될 수 있도록 연결시켜주는 회동핀이 끼워진 구조로 되어, 상기 우레탄고무재질의 부싱이 갖는 우수한 자기윤활성때문에 정기적으로 급유를 해주지 않더라도 부움과 아암의 회전동작이 원활히 이루어져 내구성이 향상될 수 있도록 된 굴삭기의 부움연결구조를 제공함에 그 목적이 있다.The present invention has been devised to solve the above-mentioned drawbacks, a bushing housing having a groove formed in the inner surface through a connection hole formed near the upper end of the arm and a connection hole of the boom bracket attached to the upper end of the boom. In the inner hole of the bushing housing, a protrusion made of urethane rubber material having a high self-lubrication property is inserted while the protrusion is formed to be caught in the groove, and the through hole of the bushing is connected so that the arm and the arm can rotate. Rotation pin is inserted into the structure, and because of the excellent self-lubrication of the urethane rubber bushing, the boolean connection structure of the excavator is made to improve durability by smoothly rotating the buoys and the arm even without regular lubrication. The purpose is to provide.

이하 본 고안을 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 고안 부움 연결구조는 제1도에 도시된 바와 같이, 굴삭기본체(A)와, 부움(B), 부움(B)과 아암(C), 아암(C)과 버킷(D)의 연결부위를 모두 포함하나, 이들 연결구조가 거의 동일하기 때문에 설명을 간단히 하기 위해 이하 부움(B)과 아암(C)의 연결구조부위만을 1실시예로 들어 설명한다.The buoyancy structure of the present invention, as shown in Figure 1, the excavation base (A), the buoy (B), the buoy (B) and the arm (C), arm (C) and the bucket (D) connecting portion All of them are included, but since these connection structures are almost the same, only the connection structure portions of the buoy (B) and the arm (C) will be described below as an example.

즉, 부움(B)의 상단에 형성된 부움브래킷(1)의 연결구멍(2)과, 아암(C)의 상단부 가까이 형성된 연결구멍(3)을 관통해서 내면에 일정길이의 요홈(4)이 형성된 부싱 하우징(5)이 끼워지고, 이 부싱하우징(5)의 내부구멍(6)에는 상기 요홈(4)에 끼워걸려지도록 돌기(7)가 일정길이로 돌출형성된 우레탄고무재질의 부싱(8)이 끼워지며, 이 부싱(8)의 관통구멍(9)에는 상기 부움(B)과 아암(C)이 서로 회동될 수 있도록 연결시켜주는 회동핀(10)이 끼워진 구조로 되어 있다.That is, the groove 4 having a predetermined length is formed on the inner surface through the connection hole 2 of the buoy bracket 1 formed at the upper end of the buoy B and the connection hole 3 formed near the upper end of the arm C. The bushing housing 5 is fitted therein, and the inner hole 6 of the bushing housing 5 has a urethane rubber bushing 8 in which a protrusion 7 protrudes to a certain length so as to be fitted into the groove 4. The through hole 9 of the bushing 8 has a structure in which a rotation pin 10 is fitted to connect the boom B and the arm C to be rotated with each other.

그런데 본 고안에 따른 상기 부싱(8)은 우레탄고무재질로 만들어지면서 자기윤활성을 갖추고 있는바, 즉, 상기 부싱(8)은 우레탄고무에 자기윤활성이 우수한 첨가제를 혼합하여 성형한 것으로, 그 비중이 금속제품이 1/6정도로서 가볍고, 또 인장강도가 350㎏/㎠이상이며 쇼어경도(Hs)가 60±3이상인 기계적성질을 갖고 있어서, 내마모성이 크면서도 원활하게 회전력을 전달할 수가 있도록 되어 있다.However, the bushing 8 according to the present invention is made of a urethane rubber material and has self-lubrication, that is, the bushing 8 is formed by mixing an additive having excellent self-lubrication with urethane rubber, its specific gravity being The metal product is about 1/6 light, has a tensile strength of 350 kg / cm 2 or more, and has a Shore hardness (Hs) of 60 ± 3 or more. Therefore, it has high wear resistance and smoothly transmits rotational force.

다음에는 상기와 같이 구성된 본 고안의 작용에 대해 설명한다.Next will be described the operation of the present invention configured as described above.

부움(B)의 상단에 형성된 부움브래킷(1)의 연결구멍(2)과 아암(C)의 연결구멍(3)을 일치시키고나서 이들연결구멍(2, 3)에다 부싱하우징(5)을 끼운다음, 이 부싱하우징(5 )의 요홈(4)과 부싱(8)의 돌기(7)를 일직선상으로 위치시켜 이 부싱(8)의 관통구멍(9)에다 회동핀(10)을 끼워지게 되면 부움(B)과 아암(C)이 서로 회동할수 있도록 연결시켜지게 된다.After matching the connecting hole 2 of the buoy bracket 1 and the connecting hole 3 of the arm C formed in the upper part of the buoy B, the bushing housing 5 was inserted in these connecting holes 2 and 3. Next, when the groove 4 of the bushing housing 5 and the projection 7 of the bushing 8 are positioned in a straight line, the pivot pin 10 is inserted into the through hole 9 of the bushing 8. The boom (B) and the arm (C) are connected to each other so that they can rotate.

따라서 본 고안 연결구조는, 상기 부싱(8)이 우레탄고무재질로 되어 우수한 자기윤활성을 갖고 있기 때문에 정기적으로 윤할유를 급유해 주지 않더라도 그 내부의 관통구멍(9)에 끼워진 회동핀(10)을 매개로 부움(B)과 아암(C)의 회동동작이 보다 원활히 이루이어지게 될 뿐만 아니라, 윤활유에 이물질이 부착되어 굴삭기의 외관을 해치된 현상이 방지될 수 있게되고, 또 상기 부싱(8)의 기계적강도 또한 우수해서 굴삭작업시 발생하게되는 충격이나 진동등을 흡수하여 연결구조부위의 파손을 방지할 수 있게 됨과 더불어, 연결구조의 구조가 간단해지게 됨으로써 생산단가가 낮춰질 수 있게 된다.Therefore, the connection structure of the present invention, since the bushing 8 is made of a urethane rubber material and has excellent self-lubricating activity, the pivot pin 10 fitted into the through-hole 9 inside the bushing 8 is not even regularly supplied with lubricant. In addition, the rotation of the buoy (B) and the arm (C) is not only smoothly achieved, but also foreign matters attached to the lubricating oil can be prevented from hatching the appearance of the excavator, and the bushing (8) The mechanical strength is also excellent, so that the shock or vibration generated during the excavation work can be absorbed to prevent breakage of the connecting structure, and the structure of the connecting structure can be simplified, thereby lowering the production cost.

한편, 상기 설명에서는 본 고안의 실시예로서 부움(B)과 아암(C)의 연결구조에 본 고안의 부싱(8)이 사용된것을 설명하였으나, 본 고안은 구성부품이 힌지식으로 서로 상대회전운동을 하게 되는 연결구조에는 모두 적용할 수 있음은 물론이고, 또 상기 부싱(8)은 경우에 다라 한쪽에다 플랜지등을 형성시키거나, 또는 연결구조부위에 따라 쐐기링(11 : shim)둥과 함께 사용할 수도 있다.Meanwhile, in the above description, the bushing 8 of the present invention is used as the embodiment of the present invention in the connection structure of the buoy (B) and the arm (C), but the present invention has the components rotate relative to each other by the hinge type. Of course, it is possible to apply to all the connection structure to be exercised, and the bushing (8) in some cases to form a flange or the like on one side, or according to the connection structure part of the wedge ring (11: shim) Can also be used together.

이상의 설명에서와 같이 본 고안은, 서로 회전운동하는 부움(B)과 아암(C)의 연결구조에 내마모성이 크면서 자기윤활성이 우수한 우레탄고무재질의 부싱(8)을 사용하게 됨으로써, 정기적인 급유없이도 회동연결구조의 동작이 원활해지게 될 뿐만 아니라, 작업시 발생하는 충격이나 진동을 흡수해서 연결부위의 파손을 방지해 수 있게 되고, 구조가 간단해지게 됨으로써 생산단가를 낮춰질 수 있는 효과가 있다.As described in the above description, the present invention uses a urethane rubber bushing 8 having high abrasion resistance and excellent self-lubrication in the connection structure of the buoy (B) and the arm (C) that rotates with each other. Without this, the operation of the rotating connection structure is not only smooth, but also the shock and vibration generated during the work can be absorbed to prevent the breakage of the connection part, and the structure is simplified to reduce the production cost. have.

Claims (1)

부움(B)의 상단에 형성된 부움브래킷(1)의 연결구멍(2)과 아암(C)의 연결구멍(3)에 회동핀등이 끼워져 부움(B)과 아암(C)이 서로 상대 회전할 수 있도록 된 부움연결구조에 있어서, 상기 연결구멍(2, 3)에는 내부에 요홈(4)이 일정길이로 형성된 부싱하우징(5)이 끼워지고, 이 부싱하우징(5)의 내부구멍(6)에는 상기 요홈(4)에 끼워지도록 돌기(7)가 돌출형성되면서 자기윤활성을 갖는 우레탄 고무재질로 된 부싱(8)이 끼워진 것을 특징으로 하는 우레탄 고무부싱을 사용한 굴삭기의 부움연결구조.A pivot pin or the like is inserted into the connection hole 2 of the buoy bracket 1 and the connection hole 3 of the arm C formed at the upper end of the buoy B so that the buoy B and the arm C rotate relative to each other. In the buoyancy connection structure, the bushing housing 5 having the groove 4 formed in a predetermined length is fitted in the connecting holes 2 and 3, and the inner hole 6 of the bushing housing 5 is fitted. The buoyancy structure of an excavator using a urethane rubber bushing, characterized in that the bushing (8) made of a urethane rubber material having a self-lubricating activity is inserted into the protrusion (7) so as to fit in the groove (4).
KR2019890011493U 1989-08-01 1989-08-01 Connecting device for boom in excavator KR920006031Y1 (en)

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KR910004406U KR910004406U (en) 1991-03-19
KR920006031Y1 true KR920006031Y1 (en) 1992-08-29

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Cited By (1)

* Cited by examiner, † Cited by third party
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KR101379573B1 (en) * 2006-12-05 2014-03-31 산드빅 마이닝 앤드 컨스트럭션 오와이 Bearing of a breaking device tool

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* Cited by examiner, † Cited by third party
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KR101379573B1 (en) * 2006-12-05 2014-03-31 산드빅 마이닝 앤드 컨스트럭션 오와이 Bearing of a breaking device tool

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