KR20010019689A - A Hydraulic Mounting Clamp for Attachment of Excavator - Google Patents

A Hydraulic Mounting Clamp for Attachment of Excavator Download PDF

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Publication number
KR20010019689A
KR20010019689A KR1019990036239A KR19990036239A KR20010019689A KR 20010019689 A KR20010019689 A KR 20010019689A KR 1019990036239 A KR1019990036239 A KR 1019990036239A KR 19990036239 A KR19990036239 A KR 19990036239A KR 20010019689 A KR20010019689 A KR 20010019689A
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KR
South Korea
Prior art keywords
hydraulic
excavator
attachment
clamp
hydraulic cylinder
Prior art date
Application number
KR1019990036239A
Other languages
Korean (ko)
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KR100321009B1 (en
Inventor
안동규
Original Assignee
구영근
광림산기 주식회사
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Application filed by 구영근, 광림산기 주식회사 filed Critical 구영근
Priority to KR2019990018147U priority Critical patent/KR200167954Y1/en
Priority to KR1019990036239A priority patent/KR100321009B1/en
Publication of KR20010019689A publication Critical patent/KR20010019689A/en
Application granted granted Critical
Publication of KR100321009B1 publication Critical patent/KR100321009B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • 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
    • E02F3/28—Dredgers; 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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3618—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with two separating hooks
    • 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
    • E02F3/28—Dredgers; 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
    • E02F3/36—Component parts
    • 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
    • E02F3/28—Dredgers; 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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
    • 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
    • E02F3/28—Dredgers; 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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/365—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with redundant latching means, e.g. for safety purposes
    • 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
    • E02F3/28—Dredgers; 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
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

PURPOSE: A hydraulic clamp for mounting an attachment of an excavator is provided to prevent deviation of the attachment from the clamp double by mounting a check valve to a hydraulic cylinder and safety pin to an operation hook pin-coupled to the hydraulic cylinder. CONSTITUTION: A hydraulic clamp for mounting an attachment of an excavator, in which operation hooks(40,50) are pin-coupled at both sides of a clamp main body fixed to an arm of the excavator for attaching or detaching the attachment by the expansion and contraction operation of a hydraulic cylinder connected to a hydraulic line of the excavator, includes the hydraulic cylinder(60) mounted with a check valve(70) for preventing counterflow of working oil filled in the hydraulic cylinder by the deviation of the attachment out of the hooks due to the malfunction of the hydraulic cylinder even though any defect is generated in a hydraulic line of the hydraulic cylinder, wherein a safety pin(80) is mounted outside either of the hook to move manually to prevent deviation of an attachment pin.

Description

굴삭기 어태치먼트 장착용 유압 클램프 {A Hydraulic Mounting Clamp for Attachment of Excavator}Hydraulic Mounting Clamp for Attachment of Excavator

본 발명은 굴삭기 어태치먼트 장착용 유압 클램프에 관한 것으로, 굴삭기 붐 선단의 아암에 부착되는 버킷 또는 브레이커 등의 각종 어태치먼트를 용이하게 결합·해체할 수 있도록 굴삭기측으로 부터 공급되는 작동유의 압력에 의해 작동되는 유압 클램프의 구조를 경량화·안전성향상·중장비 제조업체의 각종 장비규격에 따른 교체의 호환성을 높일 수 있도록 한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic clamp for mounting an excavator attachment. The hydraulic clamp is operated by the pressure of the hydraulic oil supplied from the excavator side so that various attachments such as a bucket or a breaker attached to the arms of the excavator boom tip can be easily combined and dismantled. The structure of the clamp is designed to reduce the weight, improve safety, and improve the compatibility of replacement according to various equipment specifications of heavy equipment manufacturers.

굴삭기의 버킷이나 브레이커 등 각종 어태치먼트를 편리하게 교환하기 위하여 고안된 클램프는 다양한 것이 알려져 있는데, 이중 일례를 들면 "굴삭기의 부착기구 결합용 결합구의 구조"에 대한 실용신안공고 제95-5247호, "굴삭기의 굴삭공구 교환장치"에 대한 실용신안공개 제1999-12125호, "굴삭기의 부착기구 결합용 링크"에 대한 실용신안공개 제97-58533호, "굴삭기의 옵션작업기용 클램핑장치"에 대한 특허공개 제98-5755호 등 다수가 공지되어 있다.Clamps designed to conveniently exchange various attachments, such as buckets or breakers of excavators, are known in various ways. For example, Utility Model Publication No. 95-5247, "Excavator" for "Structure of coupling mechanism for coupling attachment of excavator" Utility Model Publication No. 1999-12125, Utility Model Publication No. 97-58533, "Clamping Device for Excavator Options" for "Excavator Tool Exchange Device" Many are known, including US Pat. No. 98-5755.

한편, 상기한 종래의 굴삭기 어태치먼트 교환을 용이하게 하기 위한 클램프장치는 그 부피가 크고 중량이 무거워 이의 취급이 불편한 단점이 있었고, 굴삭기의 사용도중 유압의 공급 및 회수를 위한 유압라인의 파손이 발생할 경우 유압 클램프의 유압실린더에서 작동유가 유출되어 핀으로부터 후크가 탈락되는 사고가 발생할 우려가 있었으며, 굴삭기 제조업체간의 아암 선단부 규격이 서로 일치하지 않아 굴삭기에 따라 클램프의 규격을 서로 다르게 설계 제작하지 않으면 않되었었다.On the other hand, the conventional clamp device for facilitating the replacement of the excavator attachment has a disadvantage that its handling is inconvenient because of its bulky and heavy weight, breakage of the hydraulic line for the supply and recovery of hydraulic pressure during use of the excavator The hydraulic oil leaked from the hydraulic cylinder of the hydraulic clamp, which could cause the hook to fall off from the pin. The arm tip specifications between the excavator manufacturers did not match each other, so the clamps had to be designed differently according to the excavator.

본 발명은 상기한 제반 문제점을 감안하여 안출된 것으로, 본 발명의 목적은 첫째, 굴삭기 붐 선단의 아암에 부착되는 버킷 또는 브레이커 등을 용이하게 결합및 해체할 수 있도록 유압식으로 이루어진 클램프의 구조를 경량화하는데 있다.The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to firstly reduce the weight of the hydraulic clamp so that the bucket or the breaker attached to the arm of the excavator boom can be easily coupled and dismantled. It is.

둘째, 본 발명은 유압라인에 문제가 발생하였을 경우라도 유압실린더내에 충만된 작동유가 임의로 배출되는 것을 방지하므로써 어태치먼트가 떨어져 야기되는 안전사고의 발생을 방지할 수 있도록 하는데 있다.Second, the present invention is to prevent the occurrence of a safety accident caused by the attachment is dropped by preventing the hydraulic fluid filled in the hydraulic cylinder is randomly discharged even when a problem occurs in the hydraulic line.

셋째, 본 발명은 유압실린더 자체의 누유 또는 파손에 의해 클램프의 후크에 끼워진 어태치먼트가 임의로 이탈되는 것을 방지할 수 있는 수단을 설치하여 2중적인 안전도모가 가능하도록 하는데 있다.Third, the present invention is to provide a double safety by providing a means for preventing the attachment of the attachment to the hook of the clamp to be detached by the leakage or damage of the hydraulic cylinder itself.

넷째, 본 발명은 제조사마다 규격이 다른 굴삭기 아암 선단의 규격에 맞도록 호환성을 갖는 클램프를 제공하는데 있다.Fourth, the present invention is to provide a clamp that is compatible to meet the specifications of the excavator arm tip, which differs from manufacturer to manufacturer.

상기한 목적을 달성하기 위하여 본 발명은 굴삭기의 아암에 고정되는 클램프 본체에 후크가 핀결합되어 유압실린더에 의하여 회전작동되어 어태치먼트를 결합·해체시킬 수 있도록 된 클램프에 있어서, 상기 유압실린더에는 첵 밸브를 설치하여 유압라인에 하자가 발생하더라도 유압실린더에 충만된 작동유가 역류되는 것을 방지할 수 있도록 한 굴삭기 어태치먼트 장착용 유압 클램프를 제공한다.In order to achieve the above object, the present invention provides a clamp in which a hook is pin-coupled to a clamp main body fixed to an arm of an excavator to be rotated by a hydraulic cylinder to engage and disengage an attachment. It provides a hydraulic clamp for mounting the excavator attachment to prevent backflow of the hydraulic fluid filled in the hydraulic cylinder even if a fault occurs in the hydraulic line by installing a.

또, 본 발명은 어태치먼트의 핀이 결합되는 후크의 외측에는 수동으로 괘해정이 가능한 안전핀을 설치하여 유압실린더 자체가 파손되어 발생될 수 있는 어태치먼트 핀의 이탈을 방지할 수 있도록 한 굴삭기 어태치먼트 장착용 유압 클램프를 제공한다.In addition, the present invention is installed on the outside of the hook to which the attachment pin is coupled, the safety pin that can be ruled on manually to install the hydraulic attachment for the excavator attachment to prevent the departure of the attachment pin that can be generated by damage to the hydraulic cylinder itself Provide clamps.

또한, 본 발명의 클램프는 굴삭기의 아암 선단에 결합되는 핀과 어태치먼트의 핀이 결합되는 클램프 사이의 폭을 최소화하여 클램프 자체를 콤팩트화 함으로써 부피의 최소화 및 경량화를 도모한 굴삭기용 유압 클램프를 제공한다.In addition, the clamp of the present invention provides an excavator hydraulic clamp for minimizing and reducing weight by minimizing the width of the clamp itself by minimizing the width between the pin coupled to the arm tip of the excavator and the clamp coupled to the attachment pin. .

또한, 본 발명은 굴삭기의 아암 선단에 결합되는 핀의 양단에 규격이 다른 부시를 교체설치할 수 있도록 하여 제조업체마다 규격이 다른 굴삭기에도 쉽게 호환설치가 가능한 굴삭기용 유압 클램프를 제공한다.In addition, the present invention provides a hydraulic clamp for excavators that can be installed easily compatible with excavators having different specifications by allowing manufacturers to replace the bushes of different sizes on both ends of the pin is coupled to the arm tip of the excavator.

도 1은 본 발명에 의한 유압 클램프가 굴삭기 아암 선단과 어태치먼트사이에 설치되는 상태를 도시한 분리사시도,1 is an exploded perspective view showing a state in which a hydraulic clamp according to the present invention is installed between an excavator arm tip and an attachment;

도 2는 본 발명에 의한 유압 클램프의 외관사시도,2 is an external perspective view of a hydraulic clamp according to the present invention;

도 3은 본 발명에 의한 유압 클램프의 정면도,3 is a front view of the hydraulic clamp according to the present invention;

도 4는 본 발명에 의한 유압 클램프의 일부절개상태를 도시한 저면도,Figure 4 is a bottom view showing a partially cut state of the hydraulic clamp according to the present invention,

도 5는 도 4의 A 부 확대단면도,5 is an enlarged cross-sectional view of portion A of FIG. 4;

도 6은 본 발명에 의한 유압 클램프의 유압실린더부를 도시한 정면도,6 is a front view showing a hydraulic cylinder of the hydraulic clamp according to the present invention;

6a,6b는 본 발명에 의한 유압 클램프의 첵 밸브 작동상태도로서, 도 6a는 유압실린더가 신장되는 상태의 작동유 흐름상태도이고, 도 6b는 유압실린더가 수축되는 상태의 작동유 흐름상태도,6a, 6b is a valve operation state diagram of the hydraulic clamp according to the present invention, Figure 6a is a hydraulic oil flow state of the hydraulic cylinder is extended, Figure 6b is a hydraulic oil flow state of the hydraulic cylinder is contracted,

도 7은 본 발명에 의한 유압 클램프의 안전핀이 괘·해정되는 상태를 도시한 것이다.7 shows a state in which the safety pin of the hydraulic clamp according to the present invention is locked and unlocked.

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

1 : 굴삭기 아암 2,3 : 핀구멍1: Excavator Arm 2,3: Pin Hole

4 : 어태치먼트 5,6 : 어태치먼트 핀4: Attachment 5, 6: Attachment pin

10 : 유압 클램프 11,12,13,14 : 핀10: hydraulic clamp 11,12,13,14: pin

18 : 부시 20 : 본체18: bush 20: body

30 : 고정후크 40,50 : 가동후크30: fixed hook 40, 50: movable hook

60 : 유압실린더 70 : 첵 밸브60: hydraulic cylinder 70: check valve

72 : 스프링 74 : 볼72: spring 74: ball

76 : 통로 78 : 작동핀76: passage 78: operating pin

80 : 안전핀 82 : 손잡이80: safety pin 82: handle

84 : 안전핀 뭉치 86 : 장공84: bundle of safety pins 86: long

88 : 스프링 L1,L2 : 유압라인88: spring L1, L2: hydraulic line

P1,P2 : 입출력포트P1, P2: I / O Port

이하, 본 발명을 첨부된 도면에 의하여 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 의한 굴삭기 어태치먼트 장착용 유압 클램프(10)의 장착상태를 도시한 분리사시도이고, 도 2는 본 발명의 유압 클램프(10)의 외관 사시도이며, 도 3 및 도 4는 각각 유압 클램프(10)의 정면 및 일부절개된 상태를 도시한 저면구성도로서, 본 발명은 상부 양측에 굴삭기의 아암(1)에 형성된 핀구멍(2)(3)에 결합되는 핀(11)(12)이 장착된 클램프 본체(20)와, 이 클램프 본체(20)의 하부 일측에 고정설치되는 고정후크(30)와, 이 고정후크(30)의 상부와 상기 클램프 본체(20)의 하부 타측에 각각 핀(13)(14)으로 회전가능하게 고정되는 2개의 가동후크(40)(50)와, 상기 양측 가동후크(40)(50)사이에 실린더 몸체(61)와 피스톤 로드(62)의 선단이 핀(63)(64)으로 결합되어 작동유의 공급에 의하여 신축되면서 상기 양측 가동후크(40)(50)를 동시에 회전작동시켜 어태치먼트(4)의 핀(5)(6)을 장·탈착시키는 유압실린더(60)를 포함하여 이루어진다.1 is an exploded perspective view showing a mounting state of an excavator attachment mounting hydraulic clamp 10 according to the present invention, Figure 2 is an external perspective view of the hydraulic clamp 10 of the present invention, Figures 3 and 4 are respectively As the bottom configuration diagram showing the front and partially cut state of the clamp 10, the present invention is a pin (11) (12) coupled to the pin hole (2) (3) formed in the arm (1) of the excavator on both sides of the upper ) Is attached to the clamp main body 20, the fixed hook 30 is fixed to the lower side of the clamp body 20, the upper portion of the fixed hook 30 and the other side of the lower lower portion of the clamp body 20 The cylinder body 61 and the piston rod 62 between the two movable hooks 40 and 50 rotatably fixed to the pins 13 and 14, respectively, and the two movable hooks 40 and 50, respectively. The front end is coupled to the pins 63 and 64 and stretched by supply of hydraulic oil, thereby simultaneously rotating and rotating the movable hooks 40 and 50 on both sides. And a hydraulic cylinder 60 for mounting and detaching the pins 5 and 6 of (4).

본 발명은 도 6에 도시한 바와 같이 상기 유압실린더(60)에 장착되어 유압실린더(60)의 전후단에 각각 입출력포트(P1)(P2)가 접속되고 유압라인(L1)(L2)으로 입력포트가 접속되어 유압실린더(60)를 신장시키는 유압라인(L1)이 파손되더라도 유압실린더(60)내부의 작동유가 일측 유압라인(L1)으로 역류되는 것을 방지하는 첵 밸브(70)를 더 포함한다.6, the input / output ports P1 and P2 are connected to the front and rear ends of the hydraulic cylinder 60, respectively, and are input to the hydraulic lines L1 and L2, as shown in FIG. 6. The valve further includes a check valve 70 which prevents the hydraulic oil in the hydraulic cylinder 60 from flowing back to the one side hydraulic line L1 even if the hydraulic line L1 for connecting the port and extending the hydraulic cylinder 60 is damaged. .

또한, 본 발명은 어태치먼트(4)의 핀(5)이 결합되는 일측 가동후크(50)의 외측에 설치되어 수동으로 괘해정되어 유압실린더(60)자체가 파손되어 발생될 수 있는 어태치먼트 핀(5)(6)의 이탈을 방지하는 안전핀(80)을 더 포함한다.In addition, the present invention is installed on the outer side of one side of the movable hook 50 to which the pins 5 of the attachment 4 are coupled and manually fixed and attached to the attachment pin 5 that may be generated by the hydraulic cylinder 60 itself. It further includes a safety pin (80) to prevent the separation of the (6).

상기 클램프(10)는 도 3의 정면도에서 확인할 수 있는 바와 같이, 본체(20)의 바닥면(25)으로부터 상단까지의 높이를 가능한 최소화하여 부피를 줄이고 경량화를 도모할 수 있도록 한 것이며, 이에 의해 클램프의 운반 및 취급을 용이하게 할 수 있도록 함과 아울러 굴삭기의 아암 선단에 어태치먼트를 직접 장착하는 것과 같은 효과를 주어 굴삭기 운전자가 클램프를 장착하지 않았던 때와 거의 동일한 감각으로 어태치먼트를 조작하여 작업할 수 있도록 해준다.As can be seen in the front view of Figure 3, the clamp 10 is to minimize the height from the bottom surface 25 to the top of the main body 20 as possible to reduce the volume and reduce the weight, thereby In addition to facilitating the transport and handling of the clamps, it also has the same effect as attaching attachments directly to the arm tip of the excavator, allowing the operator to operate the attachment with almost the same sense as when the excavator driver did not mount the clamp. To make sure.

또한, 상기 클램프 본체(20)는 바닥면(25)과 이 바닥면(25)의 좌,우 양측에서 상부로 접합된 측면판(26)의 내,외측에 보강재(27)를 용접처리하여 구조적인 강도향상을 도모할 수 있도록 한다.In addition, the clamp main body 20 is constructed by welding the reinforcing material 27 to the inside and the outside of the bottom surface 25 and the side plate 26 joined from the left and right sides of the bottom surface 25 to the top. To improve the strength of the physical.

상기 클램프 본체(20)상부 양측에 결합되는 핀(11)(12)은 도 4 및 도 5에 도시한 바와 같이 부시(18)가 사이에 끼워지며, 핀(11)(12)에는 핀의 마모 및 금속간의 마찰에 의하여 밸생되는 소음을 줄이기 위해 그리이스를 주입하기 위한 주입부(11a)가 형성되어 여기에 도시생략된 니플(Nipple)이 끼워지고, 핀(11)(12)의 타측은 고정볼트(19)가 관통되어 2중너트(19a)로 조여져 작업중 핀(11)(12)이 임의로 빠지는 것을 방지할 수 있도록 되어 있다.The pins 11 and 12 coupled to both sides of the upper portion of the clamp main body 20 are sandwiched between the bushes 18 as shown in FIGS. 4 and 5, and the pins 11 and 12 are worn on the pins 11 and 12. And an injection portion 11a for injecting grease in order to reduce noise generated by friction between the metals, and a nipple (not shown) is inserted therein, and the other side of the pins 11 and 12 are fixed bolts. (19) penetrates and is tightened with the double nut (19a) to prevent the pins (11) 12 from falling out during operation.

도 5는 도 4의 A부 확대단면도로서, 상기 핀(11)(12)에 끼워지는 부시(18)는 그 내경(A), 길이(B) 및 플랜지 두께(C)의 칫수를 제조사별로 약간씩 다른 굴삭기의 아암 선단 폭과 핀의 칫수에 일치되는 것으로 규격별 제작하면 제조사마다 규격이 다른 굴삭기에도 어렵지 않게 본 발명의 클램프를 모두 장착할 수 있게 된다.FIG. 5 is an enlarged cross-sectional view of portion A of FIG. 4, wherein the bush 18 fitted to the pins 11 and 12 has slightly different dimensions of the inner diameter A, the length B, and the flange thickness C for each manufacturer. According to the arm tip width and the dimensions of the pins of different excavators to be manufactured according to the standard can be equipped with all the clamps of the present invention without difficulty even for excavators with different specifications for each manufacturer.

도 6은 본 발명에 의한 유압 클램프의 유압실린더(60)에 용접부착된 첵 밸브(70)를 도시한 것이고, 도 6a,6b는 첵 밸브의 작동상태를 도시한 것으로, 이 첵 밸브(70)는 유압실린더(60)를 신장시킬 경우에는 도 6a에 도시한 바와같이 일측 유압라인(L1)으로부터 첵 밸브(70)의 일측 입출력포트(P1)로 작동유가 공급되면서 스프링(72)작용에 의해 밀려 있던 볼(74)로 폐쇄된 통로(76)가 작동유의 압력에 의해 눌린 작동핀(78)에 의해 볼(74)이 후방으로 밀리면서 개방되는 것이며, 이에 의해 작동유가 화살표로 도시한 바와 같이 일측 입출력포트(P1)를 통해 유압실린더 (60; 도 6참조)로 공급됨과 동시에 유압실린더를 수축시킬때 유압실린더 (60)내부로 유입되었던 작동유는 다른 타측 입출력포트(P2)를 통해 유압라인(L2)을 따라 회수되고, 유압실린더(60)를 수축시킬 경우에는 도 6b에 도시한 바와 같이 상기와는 반대가 되도록 작동하게 되며, 의도적인 유압실린더의 수축조작이 아닌 상태에서 유압실린더를 신장 또는 수축시키는 작동유의 공급이 정지되면 스프링(72)에 의해 밀린상태를 유지하는 볼(74)이 통로(76)를 막아 닫혀진 상태를 유지하므로 유압실린더(60)내에 충만된 작동유는 외부로 즉, 일측 유압라인(L1)으로 빠져나갈 수 없게 되는 것이며, 이에 의해 유압라인에 문제가 발생하더라도 유압실린더의 이상작동을 차단할 수 있어 안전사고의 발생을 방지할 수 있게 된다.6 shows the check valve 70 welded to the hydraulic cylinder 60 of the hydraulic clamp according to the present invention, and FIGS. 6A and 6B show the operating state of the check valve. When the hydraulic cylinder 60 is extended, as shown in FIG. 6A, hydraulic oil is supplied from one side hydraulic line L1 to one side input / output port P1 of the valve valve 70 and pushed by the spring 72 action. The passage 76 closed by the existing ball 74 is opened while the ball 74 is pushed backward by the operation pin 78 pressed by the pressure of the hydraulic oil, whereby the hydraulic oil is opened as shown by the arrow. The hydraulic oil introduced into the hydraulic cylinder 60 when the hydraulic cylinder is contracted while being supplied to the hydraulic cylinder 60 through the input / output port P1 is simultaneously connected to the hydraulic line L2 through the other input / output port P2. ), And when the hydraulic cylinder 60 is contracted As shown in 6b, the operation is performed in the opposite manner to the above, and when the supply of the hydraulic oil which extends or contracts the hydraulic cylinder is stopped in a state in which the hydraulic cylinder is not intentionally contracted, it is kept pushed by the spring 72. Since the ball 74 blocks the passage 76 and maintains the closed state, the hydraulic fluid filled in the hydraulic cylinder 60 cannot escape to the outside, that is, one side hydraulic line L1. Even if a problem occurs, abnormal operation of the hydraulic cylinder can be blocked, thereby preventing the occurrence of a safety accident.

도 7은 본 발명에 의한 유압 클램프의 안전핀(80) 괘해정상태를 도시한 것으로, 이 안전핀(80)은 그 일 외측에 손잡이(82)가 부착되어 이 손잡이(82)가 안전핀 뭉치(84)의 장공(86)을 따라 이동되어 안전핀(80)을 수동으로 승강시킴으로써 어태치먼트 핀이 가동후크로부터 이탈되는 것을 방지할 수 있도록 한 것이며, 안전핀 (80)은 안전핀 뭉치(84)내부에 설치된 스프링(88)에 의해 외부의 진동이 있더라도 닫혀진 상태를 안정적으로 유지할 수 있도록 되어 있다.Figure 7 shows the locking pin 80 locking state of the hydraulic clamp according to the present invention, the safety pin 80 is a handle 82 is attached to one outside of the handle 82 is a bundle of safety pins 84 Is moved along the long hole (86) of the safety pin (80) by manually lifting the attachment pin to prevent it from being separated from the movable hook, the safety pin (80) is a spring 88 installed in the safety pin bundle (84) It is possible to keep the closed state stably even if there is external vibration.

본 발명의 유압 클램프는 클램프 본체의 전고를 구조적으로 최소화 함으로써 부피의 최소화와 아울러 경량화를 도모할 수 있음과 동시에 아암의 핀과 어태치먼트의 핀 사이의 간격이 최소화되어 굴삭기에 유압 클램프를 장착하더라도 종전 장착하지 않았던 때와 거의 유사한 감각으로 어태치먼트를 조작할 수 있는 효과를 가지며, 유압실린더에 첵 밸브를 장착하여 유압실린더의 유압라인이 파손되더라도 유압실린더에 충만된 작동유가 역류되어 양측 가동후크가 이완되는 것을 방지할 수 있으며, 일측 가동후크에는 안전핀이 설치되어 있으므로 어태치먼트의 핀이 이탈되는 것을 이중으로 방지할 수 있어 2중적인 안전도모가 가능하고, 클램프 본체 상부에 결합되는 부시만을 다른 규격의 것으로 교체해주면 규격이 다른 타사의 굴삭기에도 어렵지 않게 장착할 수 있는 호환성·범용성을 갖는 발명이다.The hydraulic clamp of the present invention can minimize the volume of the clamp body by structurally minimizing the height of the clamp body and at the same time reduce the weight and at the same time minimize the gap between the pin of the arm and the pin of the attachment, even if the hydraulic clamp is mounted on the excavator It has the effect that the attachment can be operated with a feeling almost similar to when it was not.The hydraulic valve filled with the hydraulic cylinder flows back to the hydraulic cylinder of the hydraulic cylinder, even if the hydraulic cylinder of the hydraulic cylinder is damaged by mounting a check valve on the hydraulic cylinder. Since the safety pin is installed on one side of the hook, it prevents the detachment of the attachment pin twice. Double safety is possible. It is not difficult to other companies' excavators of different specifications It is an invention having compatibility and universality that can be installed.

Claims (3)

굴삭기의 아암에 고정되는 클램프 본체에 양측의 가동후크가 핀결합되어 굴삭기로부터 유압라인이 연결된 유압실린더의 신축에 의하여 회전작동되어 어태치먼트를 결합·해체시킬 수 있도록 된 클램프에 있어서,In the clamp that both the movable hooks are pin-coupled to the clamp main body fixed to the arm of the excavator and rotated by the expansion and contraction of the hydraulic cylinder connected to the hydraulic line from the excavator, so that the attachment can be engaged and disassembled. 상기 유압실린더(60)는 유압라인에 하자가 발생하더라도 유압실린더에 충만된 작동유가 역류(逆流)되는 것을 방지할 수 있도록 첵 밸브(70)가 설치된 것을 특징으로 하는 굴삭기 어태치먼트 장착용 유압 클램프.The hydraulic cylinder 60 is an excavator attachment mounting hydraulic clamp, characterized in that the valve valve 70 is installed so that the hydraulic fluid filled in the hydraulic cylinder is prevented from flowing back even if a fault occurs in the hydraulic line. 제 1항에 있어서, 상기 일측 가동후크(50)의 외측에는 어태치먼트 핀이 빠지지 않도록 수동으로 괘해정이 가능한 안전핀(80)이 설치된 것을 특징으로 하는 굴삭기 어태치먼트 장착용 유압 클램프.According to claim 1, Excavator attachment mounting hydraulic clamp, characterized in that the safety pin (80) that can be ruled on the outer side of the one side of the movable hook (50) is installed manually. 제 1항에 있어서, 상기 클램프는 굴삭기의 아암 선단에 결합되는 핀(11)(12)의 양단에 내경(A), 길이(B), 플랜지 두께(C)의 칫수 규격이 각기 다른 부시(18)가 교체설치되어 타 굴삭기에도 장착가능하도록 된 것을 특징으로 하는 굴삭기 어태치먼트 장착용 유압 클램프.The bush (18) according to claim 1, wherein the clamp has different sizes of inner diameter (A), length (B), and flange thickness (C) at both ends of the pins (11) (12) coupled to the arm tip of the excavator. ) Hydraulic clamp for mounting the attachment of the excavator, characterized in that the replacement is installed to be mounted on other excavator.
KR1019990036239A 1999-08-30 1999-08-30 A Hydraulic Mounting Clamp for Attachment of Excavator KR100321009B1 (en)

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WO2007114601A2 (en) * 2006-03-31 2007-10-11 Everdigm Co., Ltd. Attachment coupler for heavy machinery having automatic safety device
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EP2450490A1 (en) * 2006-05-02 2012-05-09 Wedgelock Equipment Limited A safety locking device for a quick coupler
KR100792178B1 (en) * 2006-07-10 2008-01-07 최창길 Safety construction for excavator
US8328459B2 (en) 2006-09-13 2012-12-11 Ian Hill Coupler for excavators
KR100861487B1 (en) * 2007-01-23 2008-10-02 주식회사 에버다임 Attachment coupler for heavy machinery having an improved automatic safety function
US8622645B2 (en) 2008-09-08 2014-01-07 Ian Hill Coupler with gravity operated safety device
WO2011035883A1 (en) * 2009-09-22 2011-03-31 Ian Hill Hydraulic coupler with pin retention system for coupling an attachment to a work machine
US9469965B2 (en) 2009-09-22 2016-10-18 Ian Hill Hydraulic coupler with pin retention system for coupling an attachment to a work machine
US8863640B2 (en) 2009-10-16 2014-10-21 Hill Engineering Limited Control system for a hydraulic coupler
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US8403590B2 (en) 2010-03-31 2013-03-26 Ian Hill Coupler
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KR101478498B1 (en) * 2013-12-23 2015-01-05 주식회사 아이앤 Safety device for excavator quick coupler
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WO2020002882A3 (en) * 2018-06-25 2020-03-12 Miller Uk Limited Coupler
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US20210131057A1 (en) * 2018-06-25 2021-05-06 Miller Uk Limited Coupler
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