KR0125595Y1 - Increasing velocity device for telescopic fluid pressure type - Google Patents

Increasing velocity device for telescopic fluid pressure type

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Publication number
KR0125595Y1
KR0125595Y1 KR2019950016149U KR19950016149U KR0125595Y1 KR 0125595 Y1 KR0125595 Y1 KR 0125595Y1 KR 2019950016149 U KR2019950016149 U KR 2019950016149U KR 19950016149 U KR19950016149 U KR 19950016149U KR 0125595 Y1 KR0125595 Y1 KR 0125595Y1
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KR
South Korea
Prior art keywords
arm
telescopic arm
flow path
check valve
telescopic
Prior art date
Application number
KR2019950016149U
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Korean (ko)
Other versions
KR970005973U (en
Inventor
이민희
Original Assignee
김정국
현대중공업주식회사
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Application filed by 김정국, 현대중공업주식회사 filed Critical 김정국
Priority to KR2019950016149U priority Critical patent/KR0125595Y1/en
Publication of KR970005973U publication Critical patent/KR970005973U/en
Application granted granted Critical
Publication of KR0125595Y1 publication Critical patent/KR0125595Y1/en

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Classifications

    • 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
    • E02F3/38Cantilever beams, i.e. booms;, e.g. manufacturing processes, forms, geometry or materials used for booms; Dipper-arms, e.g. manufacturing processes, forms, geometry or materials used for dipper-arms; Bucket-arms

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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)
  • Fluid-Pressure Circuits (AREA)

Abstract

본 고안은 건설기계들, 즉 굴삭기등의 심굴작업시 굴삭용 버킷(크램셀)과 붐사이를 연결하는 텔레스코픽 암(Telescopic Arm)의 증속장치에 관한 것으로, 보다 상세하게는 유압식 텔레스코픽 암에 있어서 그 신장시에 속도를 증가시키는 장치에 관한 것이다.The present invention relates to a telescopic arm speed increasing device that connects an excavating bucket (crammel) and a boom during deep drilling work such as an excavator, and more particularly, in a hydraulic telescopic arm. A device for increasing speed upon stretching.

유압식 텔레스코픽 암에서 과부하등이 걸려도 텔레스코픽 암의 연식작동을 원활히 할 수 있도록 상단암(11)의 내부에 중단암(12)과 하단암(13)이 수납되며, 상기 상단암(11)의 외측에는 붐(2)의 말단과 암실린더(15)가 연결되는 암브라켓(14)이 부착되는 텔레스코픽 암(1) 구조와 펌프(6)의 유로를 개폐하는 메인체크밸브(4)로부터 텔레스코픽 암(1)의 제1 및 제2실린더(16,17)와 크램셀 실린더(31)로 압유를 공급하는 유로상에 컨트롤밸브(5)를 형성시킨 구조로 구성되는 텔레스코픽 암(1)에 있어서; 메인채크밸브(4)내에 리턴측 유로와 체크밸브(4) 후부를 연결하는 바이패스유로(8)와, 상기 리턴측 유로와 드레인간에 일정압력 이상에서 유로를 차단하는 리턴개폐밸브(7)를 추가 구성시킨 것이다.The suspension arm 12 and the lower arm 13 are accommodated in the upper arm 11 so that soft operation of the telescopic arm can be smoothly performed even when an overload light is applied in the hydraulic telescopic arm. Telescopic arm (1) from the main check valve (4), which opens and closes the flow path of the pump (6) and the telescopic arm (1) to which the arm bracket (14) to which the end of the boom (2) and the arm cylinder (15) are connected is attached. In the telescopic arm (1) composed of a structure in which a control valve (5) is formed on a flow path for supplying pressure oil to the first and second cylinders (16, 17) and the cram cell cylinder (31) of the head; Bypass passage 8 connecting the return side flow passage and the back of the check valve 4 in the main check valve 4, and a return opening / closing valve 7 for blocking the flow path at a predetermined pressure or more between the return side flow passage and the drain. It is an additional configuration.

Description

유압식 텔레스코픽 암의 증속장치.Gearbox of hydraulic telescopic arm.

제1도는 본 고안의 장착 상태도.1 is a mounting state of the present invention.

제2도는 본 고안의 구성 상태도.2 is a configuration diagram of the present invention.

제3도는 본 고안의 회로도이다.3 is a circuit diagram of the present invention.

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

1 : 텔레스코픽 암 11 : 상단암1 telescopic arm 11 upper arm

12 : 중단암 13 : 하단암12: middle arm 13: lower arm

14 : 암브라켓 15 : 암실린더14 arm bracket 15 arm cylinder

16 : 제1실린더 17 : 제2실린더16: 1st cylinder 17: 2nd cylinder

2 : 붐 3 : 크렘셀2: Boom 3: Kremsel

31 : 크렘셀실린더 4 : 메인체크밸브31: Kremsel cylinder 4: Main check valve

41 : 체크밸브 5 : 컨트롤밸브41: check valve 5: control valve

6 : 펌프 7 : 리턴개폐밸브6: pump 7: return open / close valve

8 : 바이패스유로8: Bypass Euro

본 고안은 건설기계들, 즉 굴삭기등의 심굴작업시 굴삭용 버킷(크램셀)과 붐 사이를 연결하는 텔레스코픽 암(Telescopic Arm)의 증속장치에 관한 것으로, 보다 상세하게는 유압식 텔레스코픽 암에 있어서 그 신장시에 속도를 증가시키는 장치에 관한 것이다.The present invention relates to a telescopic arm speed increasing device that connects an excavating bucket (crammel) and a boom during deep drilling work such as an excavator, and more particularly, in a hydraulic telescopic arm. A device for increasing speed upon stretching.

텔레스코픽 암이란 예를 들어 제1도에 도시한 바와 같이 깊은 지역{차체와 크램셀이 심히 이격되어 있는 경우}의 굴삭작업시 붐과 크램셀 간의 굴삭 및 자체 하중을 적절히 지탱하면서 차체 내에 위치하는 펌프의 유압을 말단작업 부위인 크램셀까지 손실없이 전달하는 2중 역할을 부담하면서, 또한 암의 연신/수축이 자재하여야 한다.Telescopic arms are, for example, pumps located within the body of the vehicle while adequately supporting the excavation and self-loading between the boom and the clam cell during excavation in deep areas (when the body and the cram cells are heavily spaced), as shown in FIG. In addition to the dual role of delivering the hydraulic pressure to the end of the crampel without loss, the stretching and contraction of the arm should be free.

상술한 기능을 가지는 텔레스코픽 암으로 종래에는 암의 연신/수축을 케이블로 조절하는 기계식 구조가 주류를 이루었으나 근래에는 신속성 및 대하중하에서도 응용이 손쉬운 유압식 구조가 선호되고 있으며, 이는 제2도의 (a), (b)에 도시한 바와 같이, 상단암(11)의 내부에 중단암(12)과 하단암(13)이 수납되며, 상기 상단암(11)의 외측에는 붐(2)의 말단과 암실린더(15)가 연결되는 암브라켓(14)이 부착되는 텔레스코픽 암(1) 구조에 있어서; 펌프(6)의 유로를 개폐하는 메인체크밸브(4)로부터 텔레스코픽 암(1)의 제1 및 제2실린더(16,17)와 크렘셀 실린더(31)로 압유를 공급하는 유로상에 컨트롤밸브(5)를 형성시킨 구조가 선호되고 있다.As the telescopic arm having the above-mentioned function, the mechanical structure for controlling the extension / contraction of the arm has been mainstream in the related art, but in recent years, the hydraulic structure, which is easy to apply even under rapidity and heavy load, is preferred. As shown in (b), the stop arm 12 and the lower arm 13 are housed in the upper arm 11, and the outer end of the boom 2 is disposed outside the upper arm 11. In the telescopic arm (1) structure to which the arm bracket (14) to which the arm cylinder (15) is connected is attached; Control valve on the flow path for supplying pressure oil to the first and second cylinders 16 and 17 of the telescopic arm 1 and the cram cell cylinder 31 from the main check valve 4 for opening and closing the flow path of the pump 6. The structure which formed (5) is preferable.

상기한 구조에서는 펌프(6)에서 공급되는 압유가 메인체크밸브(4)에 의하여 텔레스코픽 암(1)의 연신 {제3도에서 메인체크밸브(4)를 좌측으로 밀어준 위치} 또는 수축(제3도에서 메인체크밸브(4)를 우측으로 밀어준 위치)이나 압유의 트레인(Drain)등이 결정되며, 연신의 경우에는 펌프(6)에서의 압유가 메인체크밸브(4)의 체크밸브(41)를 통해 제1 및 제2실린더(16,17)측의 토출유는 리턴유로를 통해 메인체크밸브(4)에 의해 드레인하게 된다.In the above structure, the pressure oil supplied from the pump 6 is extended by the main check valve 4 (the position in which the main check valve 4 is pushed to the left in FIG. 3) or contracted by the main check valve 4. At 3 degrees, the position where the main check valve 4 is pushed to the right), the train of pressure oil, etc. are determined, and in the case of stretching, the pressure oil in the pump 6 is the check valve of the main check valve 4 ( 41, the discharge oil of the first and second cylinders 16 and 17 is drained by the main check valve 4 through the return passage.

또한, 텔레스코픽 암(1)의 수축은 상기 연신과 반대의 작용으로 이루어지게 되며, 메인체크밸브(4)가 중앙에 위치하는 경우에는 펌프(6)의 압유가 그대로 드레인하게 된다.In addition, the contraction of the telescopic arm 1 is performed by the action opposite to the stretching, and when the main check valve 4 is located at the center, the pressure oil of the pump 6 is drained as it is.

그런데, 상기한 종래 고안에 있어서는 경제성의 원칙에 의하여 펌프의 양정이 텔레스코픽 암(1)의 제1 및 제2실린더(16,17)만을 작동시키는 데에는 문제가 없으나, 크림셀 실린더(31)의 작동까지 함께 걸리거나 기타 과부하가 걸리는 경우에는 충분한 압유공급이 되지 않아 텔레스코픽 암(1)의 작동이 원활하지 못할 수 있으며, 또 정상적인 작동하에서도 텔레스코픽 암(1)의 연신시간이 오래걸려 작업효율이 떨어지는데, 본 고안은 상기의 문제점을 간단히 해결할 수 있도록 안출된 것으로, 이는 종래의 유압로에 있어서, 메인체크밸브내에 리턴개폐밸브와 바이페스유로를 추가하여, 무용의 드레인되는 압류를 다시 텔레스코픽 암의 연신에 이용하도록 한 것으로 이를 도면에 따라 보다 상세히 설명하면 다음과 같다.By the way, in the above-described conventional design, there is no problem in that the pump head operates only the first and second cylinders 16 and 17 of the telescopic arm 1 based on the principle of economy, but the operation of the cream cell cylinder 31 is performed. In case of overload or other overload, the telescopic arm (1) may not work smoothly due to insufficient pressure supply, and even under normal operation, the telescopic arm (1) may take a long time to decrease working efficiency. In order to solve the above problems, the present invention is designed to solve the above problems. In the conventional hydraulic passage, the return opening and closing passage and the bypass passage are added to the main check valve to extend the useless drainage of the telescopic arm again. If this is to be used in more detail according to the drawings as follows.

제3도는 본 고안의 요부인 압유의 유압회로도이다.3 is a hydraulic circuit diagram of the pressurized oil which is the main part of the present invention.

본 고안은 도면에 도시한 바와 같이, 상단암(11)의 내부에 중단암(12)과 하단암(13)이 수납되며, 상기 상단암(11)의 외측에는 붐(2)의 말단과 암실린더(15)가 연결되는 암브라켓(14)이 부착되는 텔레스코픽 암(1) 구조와, 펌프(6)의 유로를 개폐하는 메인체크밸브(4)로부터 텔레스토픽 암(1)의 제1 및 제2실린더(16,17)와 크램셀 실린더(31)로 압유를 공급하는 유로상에 컨트롤밸브(5)를 형성시킨 구조로 구성되는 텔레스코픽 암(1)에 있어서; 메인체크밸브(4)내에 리턴측 유로와 체크밸브(41) 후부를 연결하는 바이패스유로(8)와, 상기 리턴측 유로와 드레인간에 일정 압력 이상에서 유로를 차단하는 리턴개폐밸브(7)를 추가 구성시킴을 특징으로 한다.The present invention, as shown in the figure, the middle arm 12 and the lower arm 13 is accommodated in the upper arm 11, the outer end of the upper arm 11 and the end of the boom 2 and the arm The telescopic arm 1 is attached to the arm bracket 14 to which the cylinder 15 is connected, and the first and the first of the telescopic arm 1 from the main check valve 4 which opens and closes the flow path of the pump 6. A telescopic arm (1) composed of a structure in which a control valve (5) is formed on a flow path for supplying pressure oil to two cylinders (16, 17) and a cram cell cylinder (31); The bypass flow path 8 connecting the return side flow path and the back of the check valve 41 in the main check valve 4, and the return open / close valve 7 for blocking the flow path above a certain pressure between the return side flow path and the drain. Characterized in further configuration.

상기한 바와 같이 구성된 본 고안은 텔레스코픽 암(1)의 연신/수축은 종래의 고안과 동일하게 이루어지며, 게다가 텔레스코픽 암(1)의 연신시에 리턴되는 압유는 리턴개폐밸브(7)에 의하여 드레인되지 않고 차단되게 되며 바이패스유로(8)에 의하여 체크밸브(41) 후부인 입력측에 다시 주입되는데, 일반적으로 리턴측의 압유는 펌프(6) 토출측의 압유보다 상압이므로 {이는 펌프(6)측에 부하가 걸려야 토출유량이 상승하게 되기 때문이다} 펌프(6)에서 토출된 압유가 드레인측으로 역류되지 않으며, 이는 제1 및 제2실린더(16,17)측으로 압유의 유입유량을 상승시켜서 텔레스코픽 암(1)에 과부하가 걸려도 작동이 원활하게 되도록 하며, 연신속도를 상승시킨다.According to the present invention configured as described above, the stretching / contraction of the telescopic arm 1 is made in the same manner as the conventional design, and the pressurized oil returned when the telescopic arm 1 is stretched is drained by the return opening / closing valve 7. It is not blocked and is re-injected by the bypass passage 8 to the input side, which is after the check valve 41. Generally, since the pressure oil on the return side is higher than the pressure oil on the discharge side of the pump 6, The discharge oil flows up when the load is applied.} The pressure oil discharged from the pump 6 does not flow back to the drain side, which increases the flow rate of the pressure oil to the first and second cylinders 16 and 17 to increase the flow rate. It operates smoothly even if (1) is overloaded, and increases the drawing speed.

상술한 바와 같이 본 고안은 종래의 유압식 텔레스코픽 암에 간단히 추가시킴으로서 텔레스코픽 암의 연신력을 향상시켜서 어려운 작업도 문제없이 할 수 있도록 하는 경제성이 높고 유용한 고안인 것이다.As described above, the present invention is an economical and useful design that improves the stretching force of the telescopic arm by simply adding it to the conventional hydraulic telescopic arm so that even difficult tasks can be performed without problems.

Claims (1)

상단암(11)의 내부에 중단암(12)과 하단암(13)이 수납되며, 상기 상단암(11)의 외측에는 붐(2)의 말단과 암실린더(15)가 연결되는 암브라켓(14)이 부착되는 텔레스코픽 암(1) 구조와, 펌프(6)의 유로를 개폐하는 메인체크밸브(4)로부터 텔레스코픽 암(1)의 제1 및 제2실린더(16,17)와 크램셀 실린더(31)로 압유를 공급하는 유로상에 컨트롤밸브(5)를 형성시킨 구조로 구성되는 텔레스코픽 암(1)에 있어서; 메인체크밸브(4)내에 리턴측 유로와 체크밸브(41) 후부를 연결하는 바이패스유로(8)와, 상기 리턴측 유로와 드레인간에 일정압력 이상에서 유로를 차단하는 리턴개폐밸브(7)를 추가 구성시킴을 특징으로 하는 유압식 텔레스코픽 암의 증속장치.An interruption arm 12 and a lower arm 13 are accommodated in the upper arm 11, and an outer end of the upper arm 11 includes an arm bracket to which the end of the boom 2 and the arm cylinder 15 are connected. The telescopic arm 1 to which the 14 is attached, and the first and second cylinders 16 and 17 and the cram cell cylinders of the telescopic arm 1 from the main check valve 4 which opens and closes the flow path of the pump 6. In the telescopic arm (1) composed of a structure in which a control valve (5) is formed on a flow path for supplying pressure oil to (31); The bypass flow path 8 connecting the return side flow path and the back of the check valve 41 in the main check valve 4, and the return opening / closing valve 7 which blocks the flow path at a predetermined pressure or more between the return side flow path and the drain. Hydraulic telescopic arm speed increase apparatus characterized in that the additional configuration.
KR2019950016149U 1995-07-03 1995-07-03 Increasing velocity device for telescopic fluid pressure type KR0125595Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019950016149U KR0125595Y1 (en) 1995-07-03 1995-07-03 Increasing velocity device for telescopic fluid pressure type

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KR970005973U KR970005973U (en) 1997-02-21
KR0125595Y1 true KR0125595Y1 (en) 1998-10-15

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