KR0133564Y1 - Cramshell revolution hydraulic system of both telescopic arm and cramshell operating system - Google Patents
Cramshell revolution hydraulic system of both telescopic arm and cramshell operating system Download PDFInfo
- Publication number
- KR0133564Y1 KR0133564Y1 KR2019960003359U KR19960003359U KR0133564Y1 KR 0133564 Y1 KR0133564 Y1 KR 0133564Y1 KR 2019960003359 U KR2019960003359 U KR 2019960003359U KR 19960003359 U KR19960003359 U KR 19960003359U KR 0133564 Y1 KR0133564 Y1 KR 0133564Y1
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- South Korea
- Prior art keywords
- valve
- cylinder
- discharge end
- clamshell
- spool
- Prior art date
Links
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 25
- 239000010720 hydraulic oil Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000006071 cream Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
Classifications
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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
- E02F3/3677—Devices to connect tools to arms, booms or the like allowing movement, e.g. rotation or translation, of the tool around or along another axis as the movement implied by the boom or arms, e.g. for tilting buckets
- E02F3/3681—Rotators
-
- 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
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/413—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device
- E02F3/4136—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with grabbing device with grabs mounted on a slidable or telescopic boom or arm
-
- 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
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2285—Pilot-operated systems
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
본 고안은 건설기계들, 즉 굴삭기등의 심굴작업시 사용되는 텔레스코픽 아암장치 장비에서 텔레스코픽 아암(Telescopic Arm) 선단에 부착되는 크람쉘의 작동시스템에 관한 것으로, 종래 시스템에서는 텔레스코픽 아암(70)의 신축 및 크람쉘의 개폐만을 작동시키는데는 문제가 없었으나 작업 방법에 따라 크람쉘(60)을 일정 각도로 회전시켜 작업하는데는 일일이 사람이 회전시켜 위치를 이동시켜야 하거나 불가능 하였다. 이에 작업효율이 매우 떨어지고 안전상에도 문제점이 있는 페단이 있었으나, 본 고안에서는 파일롯트 펌프(3)와 그 유입단이 각각 연결되고 그 제어단은 스위치(11,14)에 각각 연결된 솔레노이드밸브(12,15)와, 상기 솔레노이드밸브(12)의 토출단과 페달리모트컨트롤밸브(6)의 일측 포트가 그 양측 유입단에 각각 연결되고 그 토출단은 제2스풀(9)의 일측 제어단에 연결되는 셔틀밸브(10)와, 상기 솔레노이드밸브(15)의 토출단과 페달리모트컨트롤밸브(6)의 타측포트가 그 양측 유입단에 각각 연결되고 그 토출단은 제2스풀(9)의 타측 제어단에 연결되는 셔틀밸브(13)와, 상기 솔레노이드 밸브(19)의 양측 유입단으로 부터 분기된 압유로(29,30)가 그 유입단에 연결되고 토출단은 크람쉘 회전 수단의 양측 포트에 각각 연결된 솔레노이드 밸브(20)를 구비하여, 필요시에 크람쉘(60)을 일정각도로 용이하게 제어가능토록 하고, 작업성을 크게 향상 시켰다.The present invention relates to the operation system of the clam shell attached to the tip of the telescopic arm in the telescopic arm device equipment used in deep drilling work such as excavators, construction, telescopic arm 70 in the conventional system And there was no problem in operating only the opening and closing of the clamshell, but according to the working method to rotate the cramshell 60 at a predetermined angle to work by one person to rotate the position or was impossible. There was a pedan which has a very low work efficiency and a safety problem, but in the present design, the pilot pump 3 and its inlet are connected, and the control stage is connected to the switches 11 and 14, respectively. 15), and the discharge end of the solenoid valve 12 and the one port of the pedal remote control valve 6 is connected to both inlet end and the discharge end is connected to one control end of the second spool (9) The valve 10, the discharge end of the solenoid valve 15 and the other ports of the pedal remote control valve 6 are respectively connected to both inflow ends thereof, and the discharge end thereof is connected to the other control end of the second spool 9, respectively. The shuttle valve 13 and the pressure oil passages 29 and 30 branched from both inlet ends of the solenoid valve 19 are connected to the inlet end thereof, and the discharge end is connected to both ports of the cram shell rotating means, respectively. With valve 20, if necessary The clamshell 60 can be easily controlled at a constant angle, and greatly improved workability.
Description
제1도는 본 고안의 장착 상태도.1 is a mounting state of the present invention.
제2도는 본 고안의 일실시예에 대한 크람쉘 회전유압 시스템의 유압회로도.2 is a hydraulic circuit diagram of a clamshell rotary hydraulic system according to an embodiment of the present invention.
제3도는 본 고안의 또다른 실시예에 대한 크람쉘 회전유압 시스템의 유압회로도.3 is a hydraulic circuit diagram of a clamshell rotary hydraulic system according to another embodiment of the present invention.
제4도는 종래 기술에 의한 크람쉘 회전유압 시스템의 유압 회로도이다.4 is a hydraulic circuit diagram of a clamshell rotary hydraulic system according to the prior art.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 펌프 2 : 펌프1: pump 2: pump
3 : 파일롯트펌프 4 : 유압탱크3: pilot pump 4: hydraulic tank
5: 레버리모트컨트롤밸브 6 : 페달리모트컨트롤밸브5: lever remote control valve 6: pedal remote control valve
7 : 메인컨트롤밸브 8,9 : 스풀7: Main control valve 8,9: Spool
10,13 : 셔틀밸브 11,14 : 스위치10,13: Shuttle valve 11,14: Switch
12,15,19,20 : 솔레노이드밸브 16 : 메니폴드12, 15, 19, 20: Solenoid valve 16: Manifold
17 : 텔레스코픽아암실린더 18 : 배관실린더17: telescopic arm cylinder 18: piping cylinder
21,22 : 외길유량조절밸브 26,27 : 스위치21,22: Outer flow control valve 26,27: Switch
60 : 크람쉘 61 : 크람쉘실린더60: cram shell 61: cram shell cylinder
62 : 크람쉘회전실린더 63 : 크람쉘회전모터62: cram shell rotating cylinder 63: cram shell rotating motor
70 : 텔레스코픽아암장치1 75 : 텔레스코픽아암실린더170: telescopic arm device 1 75: telescopic arm cylinder 1
76 : 텔레스코픽아암실린더2 77 : 텔레스코픽아암실린더376: telescopic arm cylinder 2 77: telescopic arm cylinder 3
78,79,80 : 드레인챔버 81 : 브라켓78,79,80: Drain chamber 81: Bracket
82 : 아암실린더 83 : 붐아암82: arm cylinder 83: boom arm
본 고안은 건설기계들, 즉 굴삭기등의 심굴작업시 사용되는 텔레스코픽 아암장치 장비에서 텔레스코픽 아암(Telescopic Arm) 선단에 부착되는 크람쉘의 작동시스템에 관한 것으로 보다 상세하게는 굴삭기의 유압식 텔레스코픽 아암 및 크람쉘 작동 시스템에서 상기 작동을 무리없이 행하며 여기에 크람쉘을 회전시킬 수 있게 하는 장치에 관한 것이다.The present invention relates to the operation system of the clamshell attached to the tip of the telescopic arm in telescopic arm device equipment used in deep drilling work such as excavators. More specifically, the hydraulic telescopic arm and the crane of the excavator The present invention relates to a device that makes it possible to rotate the ram shell in such a manner that the ram shell operation system performs the operation without difficulty.
텔레스코픽 아암이란, 예를들어 제1도에 도시한 바와같이 깊은 지역(차체와 크람쉘이 심하게 이격되어 있는 경우)의 굴삭작업시, 붐과 크람쉘간의 굴삭 및 차체하중을 적절히 지탱하면서 차체내에 위치하는 펌프의 유압을 말단작업 부위인 크람쉘까지 손실없이 전달하는 2중 역할을 부담하면서 또한 암의 연신/수축이 자유로워야 한다.The telescopic arm is located in the body of the vehicle while properly supporting the excavation and body load between the boom and the clamshell during excavation in deep areas (when the body and the cramshell are severely spaced apart), for example, as shown in FIG. It should be free to stretch / contract the arm while playing the dual role of transferring the hydraulic pressure of the pump to the cram shell which is the end work without loss.
상기의 기능을 가지는 텔레스코픽 아암에서 종래에는 아암의 연신/수축을 와이어로 조절하는 기계적 구조가 주류를 이루었으나 근래에는 신속성 및 대중화에서도 응용이 손쉬운 유압식 구조가 선호되고 있으며 이는 제1도에 도시한 바와같이 붐(83)과 크람쉘 실린더(61) 사이에 상단 아암(71), 2단아암(72), 3단아암(73), 4단아암(74)이 순차적으로 위치하고 상위 아암에 하위아암이 순차적으로 수납됨에 의해 신축이 용이하게 되도록 구성되며, 상기 상단아암(71)의 외측에는 붐(83)의 말단과 텔레스코픽 아암실린더(75)의 피스톤로드가 연결되는 아암브라켓(81)이 부착되어 구성된다.In the telescopic arm having the above function, the mechanical structure for controlling the extension / contraction of the arm has been the mainstream, but in recent years, the hydraulic structure, which is easy to apply in rapidity and popularization, is preferred. Similarly, the upper arm 71, the second arm 72, the third arm 73, and the fourth arm 74 are sequentially positioned between the boom 83 and the cram shell cylinder 61, and the lower arm is placed on the upper arm. It is configured to be easily stretched by being accommodated in sequence, and the outer side of the upper arm 71 is an arm bracket 81 is attached to the end of the boom 83 and the piston rod of the telescopic arm cylinder (75) is attached do.
또한 제4도는 상기한 종래 텔레스코픽 아암 및 크람쉘 작동시스템의 유압회로도로서, 상기 도면에서 보면 제1펌프(1)와 연결된 제1스풀(8)과 제2펌프(2)와 연결된 제2스풀(9)로 구성되며 레버리모트컨트롤밸브(5) 및 페달리모트컨트롤밸브(60)에 의해 동작되도록 구성된 메인콘트롤밸브(7)와, 상기 제1스풀(8)의 토출단 및 제2스풀(9)의 토출단이 매니폴드(16)를 사이에 두고 각각 연결되며 텔레스코픽실린더1(75), 텔레스코픽실린더2(76), 텔레스코픽실린더3(77)으로 구성되는 텔레스코픽 아암장치(17)와, 그 토출단은 탱크(4)와 연결되며 배유실린더(78), 배유실린더(79), 배유실린더(80)로 구성되는 배유수단(18)과, 상기 텔레스코픽 아암장치(17)와 배유수단(18) 사이에 위치하며 클람쉘실린더(61)로의 압유공급을 제어토록 연결된 솔레노이드밸브(19)로 구성되는데, 상기한 구조에서는 펌프(1,2)에서 공급되는 압유가 메인컨트롤밸브(7)에 의해서 텔렉스코픽 아암장치(17)의 연신(제4도에서 스풀(8,9)을 우측으로 밀어줄 위치) 또는 수축(제4도에서 스풀(8,9)을 좌측으로 밀어줄 위치)이나 압유의 드레인등이 결정되며, 연신의 경우에는 펌프(1,2)에서의 압유가 메인컨트롤밸브(7)의 압유로(41,43)에 의해서 메니폴드(16)를 통해서 텔레스코픽 아암장치(17)의 텔레스코픽 실린더1(75)로 유입되고 드레인된 압유는 리턴압유로(42,44)를 통하여 탱크(4)로 리턴되게 된다. 또한 텔레스코픽 아암장치(17)의 수축은 상기 연신과 반대의 작용으로 이루어지게 된다.FIG. 4 is a hydraulic circuit diagram of the conventional telescopic arm and the clamshell operating system. As shown in the drawing, the first spool 8 connected to the first pump 1 and the second spool connected to the second pump 2 9) and the main control valve (7) configured to be operated by the lever remote control valve 5 and the pedal remote control valve 60, the discharge end and the second spool (9) of the first spool (8) And a discharging end of the telescopic arm device 17 which is connected to each other with the manifold 16 interposed therebetween and is composed of a telescopic cylinder 1 75, a telescopic cylinder 2 76, and a telescopic cylinder 3 77. Is connected to the tank (4) and the draining means (18) consisting of an oil cylinder (78), an oil cylinder (79), an oil cylinder (80), and between the telescopic arm device (17) and the oil distribution means (18). And a solenoid valve 19 connected to control the pressure oil supply to the clamshell cylinder 61. In the structure, the pressure oil supplied from the pumps 1 and 2 is extended or contracted by the main control valve 7 (the position to push the spools 8 and 9 to the right in FIG. 4). (The position to push the spool (8, 9) to the left in Fig. 4) or the drain of the hydraulic oil, etc., and in the case of stretching, the hydraulic oil from the pump (1, 2) is the hydraulic oil of the main control valve (7) The hydraulic oil flowing into the telescopic cylinder 1 (75) of the telescopic arm device 17 through the manifold 16 by the 41 and 43 is returned to the tank 4 through the return pressure passages 42 and 44. do. In addition, the contraction of the telescopic arm device 17 is made by the action opposite to the stretching.
크람쉘 실린더(61)의 작동은 솔레노이드 밸브(19)의 작동에 의해 이루어지게 되는데, 페달리모트컨트롤밸브(6)를 밟아 스위치(27)가 ON하게 되면 솔레노이드밸브(19)의 우측 솔레노이드가 ON되어 상기 밸브(19)가 좌측으로 작동되고, 이에 따라 압유가 크람쉘실린더(61)에 공급되어 크람쉘 실린더(61)가 동작하게 된다.The clamshell cylinder 61 is operated by the operation of the solenoid valve 19. When the switch 27 is turned on by stepping on the pedal remote control valve 6, the solenoid of the solenoid valve 19 is turned ON. The valve 19 is operated to the left, so that the hydraulic oil is supplied to the cram shell cylinder 61 to operate the cram shell cylinder 61.
그런데 이와같이 작동되는 종래의 시스템에서는 경제성의 원칙에 의해 텔레스코픽 아암(70)의 신축 및 크람쉘의 개폐만을 작동시키는데는 문제가 없었으나 작업 방법에 따라 크람쉘(6)을 일정 각도로 회전시켜 작업하는데는 일일이 사람이 회전시켜 위치를 이동시켜야 하거나 불가능 하였다. 이에 작업효율이 매우 떨어지고 안전상에도 문제점이 있는 페단이 있었다.However, in the conventional system operated as described above, there is no problem in operating only the telescopic arm 70 and the opening and closing of the clamshell according to the principle of economics. However, according to the working method, the clamshell 6 is rotated at an angle. It was impossible or impossible for a person to rotate and move positions. There was a pedan that work efficiency is very low and there is a problem in safety.
본 고안은 상기 문제점을 해결하기 위해 안출된 것으로, 종래의 유압회로상에 크람쉘 실린더로 압유를 공급하는 압유로와 크람쉘 실린더로부터 압유가 탱크로 복귀되는 압유로상에 크람쉘을 일정 각도로 회전시킬 수 있는 크팜쉘 회전실린더 또는 크람쉘 회전모터, 외길유량조절밸브(one-way flowcotrol valve) 및 솔레노이드 밸브를 형성하고 크람쉘 실린더 작동용 페달리모트컨트롤밸브와 메인컨트롤밸브의 스풀 사이의 파이롯트 압유로상에 셔틀밸브를 설치하고 셔틀밸브의 일축 포트와 연결된 압유로에 솔레노이드 밸브를 설치하고 솔레노이드 밸브 작동용 스위치를 설치하고, 파이롯트 펌프의 유압을 솔레노이드 밸브에 연결하여 크람쉘 작동용 스풀을 공유토록함에 의해 크람쉘 회전까지 작동할 수 있는 것으로 보다 상세하게 설명하면 다음과 같다.The present invention has been made to solve the above problems, and the cram shell at a predetermined angle on the pressure oil passage for supplying pressure oil to the cram shell cylinder on the conventional hydraulic circuit and the pressure oil passage from which the pressure oil is returned to the tank. The pilot pressure between the spool of the main remote control valve and the pedal control valve for the operation of the cram shell cylinder is formed by forming a rotatable chamshell shell cylinder or a clamshell rotary motor, a one-way flowcotrol valve and a solenoid valve. Install the shuttle valve on the flow path, install the solenoid valve in the pressure flow path connected to the single axis port of the shuttle valve, install the solenoid valve operation switch, and connect the hydraulic pressure of the pilot pump to the solenoid valve to share the spool for the cram shell operation. It can be operated by the rotation of the clam shell by explaining in more detail as follows.
첨부된 도면에 의해 본 고안의 구성을 상세히 설명하면 다음과 같다.Referring to the configuration of the present invention in detail by the accompanying drawings as follows.
제2도는 본 고안의 일실시예에 대한 크람쉘 회전유압 시스템의 유압회로도로서 상기 도면에서 보면, 제1펌프(1)와 연결된 제1스풀(8)과 제2펌프(2)와 연결된 제2스풀(9)로 구성되며 레버리모트컨트롤밸브(5) 및 페달리모트컨트롤밸브(6)에 의해 동작되도록 구성된 메인콘트롤밸브(7)와, 상기 제1스풀(8)의 토출단 및 제2스풀(9)의 토출단이 매니폴드(16)를 사이에 두고 각각 연결되며 텔레스코픽실린더1(75), 텔레스코픽실린더2(76), 텔레스코픽실린더3(77)으로 구성되는 텔레스코픽 아암장치(17)와, 그 토출단은 탱크(4)와 연결되며 배유실린더(78), 배유실린더(79), 배유실린더(80)로 구성되는 배유수단(18)과, 상기 텔레스코픽 아암장치(17)와 배유수단(18) 사이에 위치하며 클람쉘실린더(61)로의 압유공급을 제어토록 연결된 솔레노이드밸브(19)로 구성되는 굴삭기용 텔레스코픽 아암 및 크람쉘 작동 시스템에 있어서; 파일롯트 펌프(3)와 그 유입단이 각각 연결되고 그 제어단은 스위치(11,14)에 각각 연결된 솔레노이드밸브(12,15)와, 상기 솔레노이드밸브(12)의 토출단과 페달리모트컨트롤밸브(6)의 일측 포트가 그 양측 유입단에 각각 연결되고 그 토출단은 제2스풀(9)의 일측 제어단에 연결되는 셔틀밸브(10)와, 상기 솔레노이드밸브(15)의 토출단과 페달리모트컨트롤밸브(6)의 타측포트가 그 양측 유입단에 각각 연결되고 그 토출단은 제2스풀(9)의 타측 제어단에 연결되는 셔틀밸브(13)와, 상기 솔레노이드 밸브(19)의 양측 유입단으로 부터 분기된 압유로(29,30)가 그 유입단에 연결되고 토출단은 크람쉘 회전 실린더(62)의 양측 포트에 각각 연결된 솔레노이드 밸브(20)를 구비한다.FIG. 2 is a hydraulic circuit diagram of a clamshell rotary hydraulic system according to an embodiment of the present invention. As shown in the drawing, the first spool 8 connected to the first pump 1 and the second pump 2 connected to the second pump 2 are shown in FIG. A main control valve 7 composed of a spool 9 and configured to be operated by a lever remote control valve 5 and a pedal remote control valve 6, a discharge end and a second spool of the first spool 8. The discharging end of 9) is connected to each other with the manifold 16 interposed therebetween, and is composed of a telescopic cylinder 1 (75), a telescopic cylinder 2 (76), and a telescopic cylinder 3 (77), and The discharge end is connected to the tank (4) and the draining means (18) consisting of an oil cylinder (78), an oil cylinder (79), an oil cylinder (80), and the telescopic arm device (17) and oil supply means (18). Telescopic excavators consisting of solenoid valves 19 located between and connected to control the hydraulic oil supply to the clamshell cylinder 61. In kopik arm and greater ramswel operating system; The pilot pump 3 and its inlet end are connected, respectively, and the control stages are solenoid valves 12 and 15 connected to the switches 11 and 14, respectively, the discharge end of the solenoid valve 12 and the pedal remote control valve ( One side port of 6) is connected to both inlet ends thereof, and the discharge end thereof is a shuttle valve 10 connected to one control end of the second spool 9, the discharge end of the solenoid valve 15 and the pedal remote control. Shuttle valve 13 connected to the other inlet end of the valve 6 and the discharge end thereof to the other control end of the second spool 9, and both inlet ends of the solenoid valve 19, respectively. Pressure passages 29 and 30 branched from are connected to the inflow end thereof, and the discharge end has a solenoid valve 20 connected to both ports of the cram shell rotating cylinder 62, respectively.
또한 상기 크람쉘 회전실린더(62)가 저속으로 작동할시에도 균일한 동작이 가능토록 하기 위해서는 상기 크람쉘 회전 실린더(62) 작동시 양측 포트에서 배압이 형성되도록 하여야 하는데, 이를 위해 상기 솔레노이드밸브(20)와 크람쉘회전실린더(62)의 양측포트 사이의 압유로 중간에 외길유량조절밸브(one-way flow control valve)(21,22)가 각각 구비될 수 있다.In addition, in order to enable uniform operation even when the cram shell rotating cylinder 62 is operated at a low speed, back pressure should be formed at both ports when the cram shell rotating cylinder 62 is operated. For this purpose, the solenoid valve ( 20) and one-way flow control valves 21 and 22 may be provided in the middle of the oil passage between the two ports of the clamshell rotating cylinder 62.
제3도는 본 고안의 또다른 실시예에 대한 크람쉘 회전유압시스템의 유압회로도로서 상기 도면에서 보면, 제2도에서 사용된 크람쉘회전실린더(62) 대신에 크람쉘회전모터(63)를 사용하고 있으며, 나머지 부분은 제2도에서의 구성과 동일하게 구성된다.3 is a hydraulic circuit diagram of a clamshell rotary hydraulic system according to another embodiment of the present invention. In the drawings, the clamshell rotary motor 63 is used instead of the clamshell rotary cylinder 62 used in FIG. The remaining part is configured similarly to the configuration in FIG.
이와같이 구성되는 본 고안 시스템에서 텔레스코픽 아암장치(70)의 연신/수측 및 크람쉘실린더(61)의 개폐는 종래 시스템과 동일하게 이루어지나, 크람쉘(6)의 회전이 가능하게 되는데 그 작동은 다음과 같이 이루어진다.In the system of the present invention configured as described above, the telescopic arm device 70 extends / receives and opens and closes the cram shell cylinder 61, but the rotation of the cram shell 6 becomes possible. It is done as follows.
먼저 크람쉘(60)을 좌회전하려면 스위치(11)를 온(on)하면 솔레노이드밸브(12)가 위치를 이동하여 파이롯트 펌프(3)에서 토출된 유압이 압유로(32,34,35)를 따라 셔틀밸브(10)의 스풀을 이동시켜 유압이 압류로(36)에 연결되어 메인컨트롤밸브(7)의 스풀(9)을 우측으로 밀게 한다. 이때 펌프(2)에서 토출된 유압은 압유로(41)를 경유하여 메니폴드(16)를 통과하여 텔레스코픽 아암 실린더(17)를 통과하여 압유로(28)로 연결된다. 유압은 압유로(28)에서 분기된 압유로(29)를 따라 솔레노이드 밸브(20)에 도달하게 된다. 상기 솔레노이드 밸브(20) 역시 스위치(11)를 온(on)할 때 같이 위치를 이동시키게 되어 있어서 압유는 솔레노이드 밸브(20)를 통과하여 외길유량조절밸브(21)를 거쳐 크람쉘회전실린더(62)(제2도참조) 또는 크람쉘회전모터(63)(제3도참조)를 좌측으로 돌리게 된다. 이때의 복귀 유압은 리턴압유로(31)를 따라 배유 실린더(18)를 경유하여 메니폴드(16)를 거쳐 탱크(4)로 복귀한다. 또한 크람쉘(60)을 우회전하려고 하면 스위치(14)를 온(on)하면 솔레노이드밸브(15)가 위치를 이동하여 파일롯트펌프(3)에서 토출된 유압이 압유로(33,39,40)를 따라 셔틀밸브(13)의 스풀을 이동시켜 유압이 압유로(40)에 연결되어 메인컨트롤밸브(7)의 스풀(9)을 좌측으로 밀게 한다. 이때 펌프(2)에서 토출된 유압은 압유로(42)를 경유하여 메니폴드(16)를 통과하여 텔레스코픽 아암 실린더(17)를 통과하여 압유로(28)에서 분기된 압유로(29)를 따라 솔레노이드 밸브(20)에 도달하게 된다. 상기 솔레노이드 밸브(20) 역시 스위치(14)를 온(on)할 때 같아 위치를 이동시키게 되어 있어서 압유는 솔레노이드 밸브(20)를 통과하여 외길유량조절밸브(21)를 거쳐 크람쉘 회전 실린더(62)(제2도참조) 또는 크람쉘 회전 모터(63)(제3도참조)를 우측으로 돌리게 된다. 이때의 복귀유압은 리턴유압로(31)를 따라 배유실린더(18)를 경유하여 메니폴드(16)를 거쳐 탱크(4)를 복귀한다.First, when turning the switch 11 on to turn the cram shell 60 to the left side, the solenoid valve 12 moves to a position so that the hydraulic pressure discharged from the pilot pump 3 is along the pressure paths 32, 34, and 35. By moving the spool of the shuttle valve 10, the hydraulic pressure is connected to the pressure passage 36 to push the spool 9 of the main control valve 7 to the right. At this time, the hydraulic pressure discharged from the pump 2 passes through the manifold 16 via the pressure oil passage 41, passes through the telescopic arm cylinder 17, and is connected to the pressure oil passage 28. The hydraulic pressure reaches the solenoid valve 20 along the pressure passage 29 branched from the pressure passage 28. The solenoid valve 20 also moves the position when the switch 11 is turned on, so that the pressurized oil passes through the solenoid valve 20 and passes through the outer flow rate control valve 21 to the cram shell rotating cylinder 62. (See Fig. 2) or the Clamshell rotary motor 63 (see Fig. 3) to the left. The return hydraulic pressure at this time returns to the tank 4 via the manifold 16 via the oil discharge cylinder 18 along the return pressure flow path 31. In addition, when turning the switch 14 on when the cram shell 60 is turned to the right, the solenoid valve 15 moves to a position, and the hydraulic pressure discharged from the pilot pump 3 flows to the pressure oil passages 33, 39, and 40. By moving the spool of the shuttle valve 13 along the hydraulic pressure is connected to the pressure passage 40 to push the spool 9 of the main control valve 7 to the left. At this time, the hydraulic pressure discharged from the pump 2 passes through the manifold 16 via the pressure passage 42, passes through the telescopic arm cylinder 17, and follows the pressure passage 29 branched from the pressure passage 28. The valve 20 is reached. The solenoid valve 20 also moves the same position when the switch 14 is turned on, so the hydraulic oil passes through the solenoid valve 20 and passes through the outer length flow control valve 21 to the cram shell rotating cylinder 62. (See FIG. 2) or the clamshell rotary motor 63 (see FIG. 3) to the right. The return hydraulic pressure at this time returns the tank 4 via the manifold 16 via the oil drain cylinder 18 along the return hydraulic path 31.
이와같이 본 고안에서는 종래의 유압회로상에 크람쉘 실린더(610로 압유를 공급하는 압유로(28)와 크림쉘 실린더(61)로 부터 압유가 탱크(4)로 복귀되는 압유로(30)상에 크람쉘(60)을 일정각도로 회전시킬 수 있는 크람쉘 회전 실린더(62) 또는 크람쉘 회전 모터(63), 외길유량조절밸브(21,22) 및 솔레노이드 밸브(20)를 형성하고 크람쉘 실린더(61) 작동용 페달리모트컨트롤밸브(6)와 메인 컨트롤 밸브(7)의 스풀(9) 사이의 파일롯트 압유로(37,38) 상에 셔틀밸브(10,13)를 설치하고, 셔틀밸브(10,13)의 일축포트와 연결된 압유로(35,39)에 솔레노이드밸브(12,15)를 설치하고 솔레노이드 밸브(12,15) 작동용 스위치(11,14)를 설치하고, 파일롯트 펌프(3)의 유압을 솔레노이드 밸브(12,15)에 연결하여 크람쉘 작동용 스풀(9)을 공유토록 함에 의해, 필요시에 크람쉘(60)을 일정각도로 용이하게 제어가능토록 하고 작업성을 크게 향상시키는 유용한 고안이다.Thus, in the present invention, the pressure oil passage 28 for supplying the pressure oil to the cram shell cylinder 610 on the conventional hydraulic circuit and the pressure oil passage 30 in which the pressure oil is returned to the tank 4 from the cream shell cylinder 61. The clamshell cylinder 60 or the clamshell rotary motor 63, the external flow rate control valves 21 and 22, and the solenoid valve 20, which can rotate the clamshell 60 at an angle, form a cramshell cylinder. (61) Install shuttle valves (10, 13) on pilot pressure passages (37, 38) between the pedal remote control valve (6) for operation and the spool (9) of the main control valve (7). The solenoid valves 12 and 15 are installed in the hydraulic oil passages 35 and 39 connected to the single shaft ports of the 10 and 13, and the switches 11 and 14 for operating the solenoid valves 12 and 15 are installed. By connecting the hydraulic pressure of (3) to the solenoid valves 12 and 15 so as to share the clamshell operating spool 9, the clamshell 60 can be easily moved to a predetermined angle when necessary. It is a useful design to make it controllable and to greatly improve workability.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960003359U KR0133564Y1 (en) | 1996-02-28 | 1996-02-28 | Cramshell revolution hydraulic system of both telescopic arm and cramshell operating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019960003359U KR0133564Y1 (en) | 1996-02-28 | 1996-02-28 | Cramshell revolution hydraulic system of both telescopic arm and cramshell operating system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970051941U KR970051941U (en) | 1997-09-08 |
| KR0133564Y1 true KR0133564Y1 (en) | 1999-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019960003359U KR0133564Y1 (en) | 1996-02-28 | 1996-02-28 | Cramshell revolution hydraulic system of both telescopic arm and cramshell operating system |
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| KR (1) | KR0133564Y1 (en) |
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| JP5703511B2 (en) * | 2012-02-16 | 2015-04-22 | 日立建機株式会社 | Telescopic rod and deep excavator |
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1996
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