KR200159276Y1 - Safety combination device of excavator attachment apparatus - Google Patents
Safety combination device of excavator attachment apparatus Download PDFInfo
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- KR200159276Y1 KR200159276Y1 KR2019970001141U KR19970001141U KR200159276Y1 KR 200159276 Y1 KR200159276 Y1 KR 200159276Y1 KR 2019970001141 U KR2019970001141 U KR 2019970001141U KR 19970001141 U KR19970001141 U KR 19970001141U KR 200159276 Y1 KR200159276 Y1 KR 200159276Y1
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- hydraulic
- excavator
- attachment mechanism
- safety
- present
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Component Parts Of Construction Machinery (AREA)
Abstract
본 고안은 건설, 토목분야에 있어서 굴삭기에 적용되는 안전사고를 예방하도록 한 굴삭기 부착기구의 안전 결합장치에 관한 것으로,The present invention relates to a safety coupling device of the excavator attachment mechanism to prevent safety accidents applied to the excavator in the construction, civil engineering,
본 고안의 목적은 굴삭기의 부착기구 결합구내에 유압차단 안전장치를 설치하므로서 현장에서 작업도중 굴삭기와 부착기구의 연결부위에 이상이 발생할 경우 안전 장치내에 차단된 유압에 의해 부착기구가 이탈하거나 낙하되어 안전사고를 유발(誘發)시킬 수 있는 문제점을 해결하고자 함에 있다.The purpose of the present invention is to install a hydraulic cut-off safety device in the attachment mechanism of the excavator, so if an abnormality occurs in the connection part between the excavator and the attachment during the work in the field, the attachment mechanism is separated or dropped by the hydraulic pressure blocked in the safety device. It is to solve a problem that may cause a safety accident.
따라서, 상기한 목적을 달성하기 위한 본 안에 따른 굴삭기 부착기구의 안전 결합장치의 구체적인 수단으로는 연결구 본체와 유압실린더축과 유압고리로 형성된 굴삭기 부착기구의 결합구에 있어서, 유압실린더 일측에 일체로서 대략 육면체 형상의 안전장치를 구성시키되, 안전장치의 일측면상에는 쵸크밸브 및 전기적 제어밸브(예 : 서보밸브등)가 설치된 유압구와 유압배출구를 일정간격으로 형성시키므로서 본 고안에 따른 굴삭기 부착기구의 안전 결합장치를 구성하게 되는 것이다.Therefore, as a specific means of the safety coupling device of the excavator attachment mechanism according to the present invention for achieving the above object, in the coupling mechanism of the excavator attachment mechanism formed of the connector body and the hydraulic cylinder shaft and the hydraulic ring, as a integral to the hydraulic cylinder one side In the structure of the excavator attachment mechanism according to the present invention, a safety device having a substantially hexahedron shape is formed, and on one side of the safety device, a hydraulic hole and a hydraulic discharge port having chokes and electric control valves (e.g. servo valves) are formed at regular intervals. It will be a safety coupling device.
Description
본 고안은 건설, 토목분야에 있어서 굴삭기에 적용되는 장치에 관한 것으로, 더욱 상세하게는 굴삭기의 암(arm)에 필요에 따른 각종 부착기구(예 : 버킷 또는 브레이커등)를 부착, 사용할 때 부착기구가 이탈되어 발생할 수 있는 안전사고를 예방하도록한 굴삭기 부착기구의 안전 결합장치에 관한 것이다.The present invention relates to a device applied to an excavator in construction and civil engineering, and more particularly, to attach and use various attachment mechanisms (e.g. buckets or breakers, etc.) as needed on the excavator arm. It relates to a safety coupling device of the excavator attachment mechanism to prevent a safety accident that may occur due to the fall.
일반적으로 굴삭기는 버킷(bucket)을 연결하여 땅을 파거나 브레이커(breaker)등을 연결하여 돌 등의 강한 지반을 분쇄할 때 사용되는 기구로서, 필요에 따른 작업 조건 및 환경에 따라 전술한 부착기구들을 수시로 교환 조립하며 사용하는 것이다.In general, an excavator is a mechanism used to dig a ground by connecting a bucket, or to break a strong ground such as a stone by connecting a breaker, etc., the attachment mechanism described above according to the working conditions and environment as necessary They are often used interchangeably assembled.
하지만 종래에는 이러한 부착기구를 굴삭기에 설치함에 있어 단순한 핀 연결구를 이용, 수동에의해 부착기구를 교환 결합하는 것으로서, 상당한 중량을 갖는 부착기구를 결합하기 위해서는 많은 인원의 노동력을 필요로 했을뿐만 아니라, 연결구에 별도의 안전장치가 설치되어있지 않으므로 인해 작업도중 충격등에 의해 연결핀이 파손하게 되면 부착기구는 그대로 굴삭기 상에서 이탈, 낙하되므로 안전사고의 치명적인 문제점을 야기시키는 것이었다.However, in the past, in order to install the attachment mechanism to the excavator by using a simple pin connector to exchange the attachment mechanism by manual, in order to combine the attachment mechanism with a considerable weight, not only the labor of a large number of labor, Because the connector does not have a separate safety device is installed, if the connection pin is damaged by the impact during the operation, the attachment mechanism is left on the excavator as it is falling, causing a fatal problem of safety accident.
따라서, 상기한 종래의 문제점을 다소 해결한 고안으로서 출원번호 제91-4165호, 명칭 : 굴삭기의 부착기구 결합용 결합구의 구조가 선 출원된바 있다.Therefore, as a design to solve the above-mentioned conventional problems somewhat, the application No. 91-4165, name: the structure of the coupling mechanism for coupling attachment mechanism of the excavator has been previously applied.
하지만, 상기 선출된 고안은 굴삭기의 부착기구 결합구에 있어, 연결구를 유압식으로 작동되게 하여 부착기구의 탈착, 교환조립을 용이하게 하고, 연결구의 형상을 갈고리 형상으로하여 연결부위상에서 부착기구가 이탈됨을 방지하도록 한 것이기는 하나, 유압라인이 파손될 경우 별도의 안전장치가 부착되어있지 않을뿐만아니라, 연결구의 형상이 갈고리 형태라고 하여도 유압이 작동하지 않는 상태에서 상당한 하중을 갖는 부착기구를 고정하기란 그 안전성의 효율이 매우 미약한 것으로, 구조적 결함에 의한 안전성의 문제점은 그대로 상존시키는 것이다.However, the elected design in the attachment mechanism coupler of the excavator, the connector is operated hydraulically to facilitate the removal and replacement of the attachment mechanism, the shape of the connector to the hook shape, the attachment mechanism is detached from the connection portion In order to prevent the damage, it is not attached to the safety device if the hydraulic line is broken, and even if the connector is hooked, fixing the attachment mechanism with a considerable load in the state that the hydraulic pressure does not work. The safety efficiency is very weak, and the problem of safety due to structural defects is to remain as it is.
따라서, 본 고안은 종래 굴삭기 부착기구 결합용 구조의 문제점을 해결하고자 창안된 것으로, 본 고안의 목적은 굴삭기의 부착기구 결합구내에 유압차단 안전장치를 설치하므로서 현장에서 작업도중 굴삭기와 부착기구의 연결부위에 이상이 발생하더라도 안전장치내에 차단된 유압에 의해 부착기구가 이탈되거나 낙하되어 안전사고를 유발(誘發)시킬 수 있는 문제점을 해결하고자 함에 있다.Therefore, the present invention was devised to solve the problems of the conventional structure for coupling the excavator attachment mechanism, the object of the present invention is to install the hydraulic cut-off safety device in the attachment mechanism of the excavator connection between the excavator and the attachment mechanism during work in the field Even if an abnormality occurs in the site, it is intended to solve the problem that the attachment mechanism is separated or dropped by the hydraulic pressure blocked in the safety device to cause a safety accident (誘發).
상기한 목적을 달성하기 위한 본 안에 따른 굴삭기 부착기구의 안전 결합장치의 구체적인 수단으로는 연결구 본체와 유압실린더축과 유압고리로 형성된 굴삭기 부착기구의 결합구에 있어서, 유압실린더 일측에 일체로서 대략 육면체 형상의 안전장치를 구성시키되, 안전장치의 일측면상에는 쵸크밸브 및 전기적 제어밸브(예 : 서보 밸브등)가 설치된 유압구와 유압배출구를 일정간격으로 형성시키므로서 본 고안의 목적을 달성한다.As a specific means of the safety coupling device of the excavator attachment mechanism according to the present invention for achieving the above object, in the coupling mechanism of the excavator attachment mechanism formed of the connector body and the hydraulic cylinder shaft and the hydraulic ring, it is substantially hexahedron integrally on one side of the hydraulic cylinder The purpose of the present invention is achieved by forming a safety device having a shape, and forming a hydraulic port and a hydraulic discharge port provided with a choke valve and an electric control valve (eg, a servo valve) on one side of the safety device at regular intervals.
제1도는 본 고안에 따른 굴삭기 부착기구의 안전 결합장치 분해 사시도.1 is an exploded perspective view of the safety coupling device of the excavator attachment mechanism according to the present invention.
제2도는 본 고안에 따른 굴삭기 부착기구의 안전 결합장치 사시도.Figure 2 is a perspective view of the safety coupling device of the excavator attachment mechanism according to the present invention.
제3도는 본 고안에 따른 굴삭기 부착기구의 안전 결합장치에 있어서, 안전장치 내의 유압작용 상태도.Figure 3 is a safety coupling device of the excavator attachment mechanism according to the present invention, the hydraulic state diagram in the safety device.
제4a도는 본 고안에 따른 굴삭기 부착기구 안전장치의 사용상태도,Figure 4a is a state of use of the excavator attachment mechanism safety device according to the present invention,
제4b도는 본 고안에 따른 굴삭기 부착기구 안전장치에 있어 실린더에 의한 유압고리의 작용상태도.Figure 4b is an operation state of the hydraulic ring by the cylinder in the excavator attachment mechanism safety device according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 연결구 본체 2 : 실린더1: connector body 2: cylinder
3 : 안전장치 4 : 유압고리3: safety device 4: hydraulic hook
11 : 조립부 12 : 연결편11 assembly part 12 connection piece
13 : 조립홈 21 : 실린더 축13: assembly groove 21: cylinder shaft
31 : 유압구 32 : 유압 배출구31: hydraulic port 32: hydraulic outlet
C : 쵸크밸브 S : 전기 제어밸브C: Choke Valve S: Electric Control Valve
이하, 본 고안에 따른 굴삭기 부착기구의 안전결합장치의 구체적인 실시예 구성을 첨부도면에 의거하여 상세히 설명하기로 한다.Hereinafter, specific embodiments of the safety coupling device of the excavator attachment mechanism according to the present invention will be described in detail based on the accompanying drawings.
제1도는 본 고안에 따른 굴삭기 부착기구의 안전 결합장치의 분해사시도이고, 도2는 본 고안에 따른 굴삭기 부착기구의 안전 결합장치의 사시도이며, 도 3은 본 고안의 유압장치내의 유압작용 상태단면도이고, 도 4의 a도는 본 고안에 따른 굴삭기 부착기구 안전 결합장치의 사용상태도이며, b도는 실린더에 의한 유압고리의 작용상태도로서 그 구성상태를 살펴보면, 대략 중앙이 직사각 형태로 관통된 연결구 본체(1)와 이 연결구 본체(1)내로 조립되는 유압실린더(2)와, 유압실린더(2) 일측에 일체로 형성되는 육면체 형상의 안전장치(3)와, 유압실린더(2) 타측단부에 갈고리 형상의 유압고리(4)가 형성되어 지므로서 본 고안에 따른 굴삭기 부착기구의 안전결합장치를 구성하게 된다.1 is an exploded perspective view of a safety coupling device of the excavator attachment mechanism according to the present invention, Figure 2 is a perspective view of a safety coupling device of the excavator attachment mechanism according to the present invention, Figure 3 is a hydraulic cross-sectional view of the hydraulic action state in the hydraulic device of the present invention 4 is a state of use of the excavator attachment mechanism safety coupling device according to the present invention, and b is a working state diagram of the hydraulic ring by the cylinder. 1) and a hydraulic cylinder (2) assembled into the connector main body (1), a hexahedral safety device (3) integrally formed on one side of the hydraulic cylinder (2), and a hook shape at the other end of the hydraulic cylinder (2). Since the hydraulic ring 4 is formed, it constitutes a safety coupling device of the excavator attachment mechanism according to the present invention.
이때, 상기 결합구 본체(1)는 도 1내지 도 2에 도시된 바와 같이 관통된 중앙부로 실린더 조립부(11)를 형성하는 것으로, 조립부(11) 하단 길이방향 좌우측면에는 굴삭기의 아암(a)과 조립되는 연결편(12)이 형성되고, 조립부(11) 상단 일측면으로는 굴삭기 부착기구(버킷 또는 브레이커등)의 연결핀에 결합되는 일측이 개방된 고리현상의 조립홈(13)으로 구성되어지되, 상기 연결편(12) 상에는 굴삭기의 암(a)과 연결하는 다수개의 연결구멍(P1,P2,P3,P4)이 일정한 배치구성으로 형성되며, 조립홈(13)이 형성된 조립구 본체(1)상단 측면상에는 도 1에 도시된 바와 같은 일정한 임의의 위치에 후술하는 유압 실린더(2) 연결핀에 의해 조립가능하도록 다수개의 연결구멍(P1', P2', P3', P4)이 형성되며 조립구 본체(1) 하단 타측면으로는 후술하는 유압고리(4)를 결합하는 힌지구가 형성되어지므로서 구성되어진다.(도면 미설명 부호 P는 연결핀)At this time, the coupler main body 1 is to form a cylinder assembly portion 11 through the center portion as shown in Figures 1 to 2, the lower side of the assembly portion 11 in the longitudinal direction of the lower end of the excavator ( A connecting piece 12 to be assembled with a) is formed, one side of the upper end of the assembly portion 11 is an annular assembly groove (13) of one side open to the coupling pin of the excavator attachment mechanism (bucket or breaker, etc.) Is composed of, the connecting piece 12, the plurality of connecting holes (P 1 , P 2 , P 3 , P 4 ) for connecting to the arm (a) of the excavator is formed in a predetermined configuration, the assembly groove 13 On the upper side surface of the formed assembly body 1, a plurality of connection holes P 1 ′, P 2 ′, which can be assembled by a hydraulic cylinder 2 connecting pin to be described later at a certain arbitrary position as shown in FIG. 1. P 3 ', P 4) is a hydraulic coupling ring (4) to be described later to the other surface are formed and the lower assembly sphere body 1 Be constructed so stand is formed with a hinge earth (figure reference numeral P is connected to the pin)
또한, 상기 실린더(2)는 유압에 의해 작동되는 것으로 실린더(2)의 일측으로는 실린더 축(21)이 형성되며, 실린더(2) 타측으로는 후술하는 안전장치(3)가 일체로 형성되어진다.In addition, the cylinder 2 is operated by hydraulic pressure, the cylinder shaft 21 is formed on one side of the cylinder 2, the safety device 3 described later on the other side of the cylinder 2 is integrally formed Lose.
한편, 상기한 안전장치(3)는 본 고안의 요지로서 도 3에 도시된 일실시예와 같이 안전장치 내부 일측면상에는 쵸크밸브(C)가 내장된 유압구(31)와 전기제어에 의해 작동하는 밸브(S)(예 : 서보밸브등)을 내장한 유압배출구가 형성되어지며, 안전장치의 상세한 유압차단 원리는 후술하기로 한다.On the other hand, the safety device 3 is operated by electric control and the hydraulic port 31, the choke valve (C) built-in on one side inside the safety device as one embodiment shown in Figure 3 as the gist of the present invention. A hydraulic outlet having a built-in valve S (eg, a servo valve) is formed, and the detailed hydraulic shutoff principle of the safety device will be described later.
또한, 상기 유압고리(4)는 굴삭기 부착기구(버킷 또는 브레이커등)를 연결조립하는 기능로서 일측면 외측에 복수개의 조립구멍(41)을 형성하며 구성되어진다.In addition, the hydraulic ring 4 is configured to connect and assemble an excavator attachment mechanism (bucket or breaker, etc.) and is formed by forming a plurality of assembly holes 41 on one side outside.
이상, 상기한 구성으로 형성된 굴삭기 부착기구의 안전 결합장치의 상호작용 및 조립상태를 살펴보면, 도 1에 도시된 바와 같이 연결구 본체(1)에 있어 조립부(11)내로 안전장치(3)와 일체로 형성된 실린더(2)를 길이방향으로 연결하여 각연결구멍(P1,P2,P3,P4)을 통해 조립핀을 삽입하여 실린더(2)를 조립하고, 실린더축 (21)단부로는 유압고리(4)를 연결하고, 이렇게 연결된 유압고리(4)를 연결구 본체(1)에 있어 힌구(P9)에 연결하므로서 굴삭기 부착기구의 안전 결합장치의 조립을 완료하게 된다.As described above, referring to the interaction and assembly state of the safety coupling device of the excavator attachment mechanism formed as described above, as shown in FIG. 1, the safety device 3 is integrated into the assembly unit 11 in the connector body 1. Connecting the cylinders 2 formed in the longitudinal direction to insert the assembly pins through the respective connecting holes P 1 , P 2 , P 3 and P 4 to assemble the cylinder 2, and to the end of the cylinder shaft 21. Is connected to the hydraulic ring (4), by connecting the connected hydraulic ring (4) to the hinge (P 9 ) in the connector body 1 to complete the assembly of the safety coupling device of the excavator attachment mechanism.
따라서, 안전장치의 유압구(31)를 통해 유압이 유입되면 도 4의 b도로 도시된 바와 같이 실린더축(21)은 유압에 의해 전, 후운동하며 유압고리(4)를 조임 또는 풀림되게하여 굴삭기 부착기구를 탈착 가능하게 조립연결시키게 되는 것으로 유압고리(4)에 의한 부착기구의 굴삭기와의 결합상태는 도 4의 a도로 도시된 바와 같다.Therefore, when the hydraulic pressure flows through the hydraulic port 31 of the safety device, as shown in b b of FIG. 4, the cylinder shaft 21 moves forward and backward by the hydraulic pressure to tighten or loosen the hydraulic ring 4. As the excavator attachment mechanism is detachably assembled and connected to the excavator of the attachment mechanism by the hydraulic ring 4, as shown in FIG.
한편, 본 고안의 요지로서 안전장치(3)의 작용상태를 살펴보면 안전장치의 유압구(31)와 유압배출구(32)로는 굴삭기로부터 제공되는 유압라인이 연결되는 것으로, 도 3의 안전장치(3) 내부 유압작용 상태로도로 도시된 바와 같이 일측의 유압라인(L)을 통해 압력이 작용하는 기름이 실린더내에 유입되어지면, 유압구(31)상에는 유체의 흐름을 일방향으로 단속하는 쵸크밸브(C)가 장착되므로서 안전장치(3)내에 유입된 기름은 역류가 방지되며, 유압배출구(32) 상에는 전기제어에 의해 개폐되는 밸브(S)(서보밸브등)에 의해 기름을 타측유압라인을 통해 외부로 배출순환되게 하므로서 안전장치(3)는 작동하게 되는 것이다.(도면 미설명 부호 L 은 유압라인)On the other hand, looking at the operating state of the safety device 3 as the gist of the present invention to the hydraulic port 31 and the hydraulic discharge port 32 of the safety device is connected to the hydraulic line provided from the excavator, the safety device (3) of FIG. When the oil acting pressure is introduced into the cylinder through the hydraulic line (L) of one side as shown in the state of the internal hydraulic action state, the choke valve (C) for controlling the flow of fluid in one direction on the hydraulic port (31) Oil is introduced into the safety device (3) as it is installed, and reverse flow is prevented. On the hydraulic outlet port (32), the oil is passed through the other hydraulic line by a valve (s) (servo valve, etc.) which is opened and closed by electric control. The safety device 3 is operated by causing the discharge to be circulated to the outside.
따라서, 작업도중 유압라인이 파손되어진다 하더라도 안전장치(3)내에서 압력을 갖고 있는 기름은 유압구(31)상의 쵸크밸브(C)에 의해 외부로 역류, 배출되지 않고, 유압배출구(32) 상에도 전지 제어밸브(S)(서보밸브등)에 의해 굴삭기 운전자가 운전실 내에서 제어밸브 스위치를 조작하지 않는한 유압배출구(32) 또한 개방되지 않으므로서 실린더(2)내의 압력은 변함없이 유지되므로 버킷 또는 브레이커 등의 굴삭기 부착기구는 이탈되거나 낙하하지 않고 견고한 고정, 결합상태를 유지하게 되는 것이다.Therefore, even if the hydraulic line is damaged during operation, the oil having pressure in the safety device 3 does not flow back to the outside by the choke valve C on the hydraulic port 31 and is discharged to the outside. The pressure in the cylinder 2 remains unchanged since the hydraulic discharge port 32 is not opened unless the excavator driver operates the control valve switch in the cab by the battery control valve S (servo valve, etc.). Excavator attachment mechanism, such as a bucket or a breaker, is to maintain a firm fixed, coupled state without falling off or falling.
이상, 상기한 바와 같은 구성으로 창안된 본 고안에 따른 굴삭기 부착기구의 안전 결합장치는 유압작동에 의해 유압고리를 자동풀림 또는 조임되게 하여 굴삭기 부착기구를 굴삭기와 자동체결되도록 하므로서 상당한 노동력 감소의 효과를 제공해 줄뿐만아니라, 특히 굴삭기 작업도중 부착기구 체결부위에 이상이 발생하거나, 유압라인이 파손 또는 실린더내에 압력이 저하될 경우에 안전장치에 의해 결합장치 내에서 유압의 외부배출을 차단하며 체결압력을 유지되도록하므로서 부착기구가 굴삭기 상에서 이탈되거나 낙하하여 발생되는 치명적인 안전사고로부터 작업자를 보호하는 것으로, 사용자들에게 매우 괄목할 만한 기대효과를 제공하게 되는 것이다.As described above, the safety coupling device of the excavator attachment mechanism according to the present invention devised in the above-described configuration allows the hydraulic ring to be automatically released or tightened by hydraulic operation, thereby making the excavator attachment mechanism automatically fasten with the excavator, thereby reducing the considerable labor force. In addition, in the event of an abnormality in the fastening part of the attachment mechanism during the operation of the excavator, breakage of the hydraulic line, or pressure drop in the cylinder, the safety device shuts off the external discharge of the hydraulic pressure in the coupling device. It is to protect the operator from fatal safety accidents caused by the attachment mechanism is detached or dropped on the excavator to provide a very remarkable effect to the user.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970001141U KR200159276Y1 (en) | 1997-01-28 | 1997-01-28 | Safety combination device of excavator attachment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970001141U KR200159276Y1 (en) | 1997-01-28 | 1997-01-28 | Safety combination device of excavator attachment apparatus |
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| Publication Number | Publication Date |
|---|---|
| KR19980057032U KR19980057032U (en) | 1998-10-15 |
| KR200159276Y1 true KR200159276Y1 (en) | 1999-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019970001141U KR200159276Y1 (en) | 1997-01-28 | 1997-01-28 | Safety combination device of excavator attachment apparatus |
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| Country | Link |
|---|---|
| KR (1) | KR200159276Y1 (en) |
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1997
- 1997-01-28 KR KR2019970001141U patent/KR200159276Y1/en not_active IP Right Cessation
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| KR19980057032U (en) | 1998-10-15 |
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