KR970007033Y1 - Swing velocity control system in a heavy working machine - Google Patents
Swing velocity control system in a heavy working machine Download PDFInfo
- Publication number
- KR970007033Y1 KR970007033Y1 KR2019940030150U KR19940030150U KR970007033Y1 KR 970007033 Y1 KR970007033 Y1 KR 970007033Y1 KR 2019940030150 U KR2019940030150 U KR 2019940030150U KR 19940030150 U KR19940030150 U KR 19940030150U KR 970007033 Y1 KR970007033 Y1 KR 970007033Y1
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- South Korea
- Prior art keywords
- swing
- turning
- valves
- speed
- control system
- Prior art date
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Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
내용 없음.No content.
Description
제 1도는 본 고안에 의한 유압회로도.1 is a hydraulic circuit diagram according to the present invention.
제 2도는 종래기술에 의한 유압회로도이다.2 is a hydraulic circuit diagram according to the prior art.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
1, 2 : 펌프3 : 방향제어밸브1, 2: pump 3: directional control valve
4 : 선회모타5 : 작업기4: turning motor 5: working machine
6 : 선회조작레버7 : 펌프6: turning lever 7: pump
8 : 솔레노이드밸브9 : 파일롯트밸브8: solenoid valve 9: pilot valve
본 고안은 굴삭기 등의 최고 선회속도를 제어하는 선회속도 제어회로에 관한 것으로, 특히 선회모타로 공급되는 유량의 일부를 드레인시킴으로서, 최고 선회속도를 제어하여 유압굴삭기 등에서 미세선회나 느린 선회 속도가 요구될 때 유용하게 사용할 수 있는 중장비 선회속도 제어회로에 관한 것이다.The present invention relates to a swing speed control circuit for controlling the maximum swing speed of an excavator, and in particular, by draining a part of the flow rate supplied to the swing motor, controlling the maximum swing speed to require fine swing or slow swing speed in a hydraulic excavator. It relates to a heavy equipment revolution speed control circuit that can be useful when used.
일반적으로 굴삭기 등의 중장비에서는 유압펌프로부터 공급된 압유가 선회모타와 주행모타, 암실린더, 붐 실린더 등의 작업기에 공급되어, 유압모타를 회전시키거나, 유압실린더의 피스톤로드를 전후진 동작시킴에 의해서 각종 작업이 이루어지게 되는데, 종래의 중장비의 유압회로도는 제 2도에 도시된 바와 같이, 두개의 펌프들(1, 2)로부터 분기공급되는 압유가 각각의 방향제어밸브들(3a, 3b, 3c, 3d, 3e, 3f, 3g)을 경유하여 선회모타(4)를 포함한 각각의 작업기(5a, 5b, 5c, 5d, 5f)에 동일하게 공급되도록 연결되어 있으며, 선회조작레버(6)로부터의 신호압라인은 선회작업용 방향제어밸브(3a)의 양단에 연결되어 있다.In general, in heavy equipment such as excavators, the hydraulic oil supplied from a hydraulic pump is supplied to a work machine such as a turning motor, a driving motor, an arm cylinder, a boom cylinder, and rotates the hydraulic motor or moves the piston rod of the hydraulic cylinder back and forth. Various operations are performed by the hydraulic circuit diagram of the conventional heavy equipment. As shown in FIG. 2, the pressure oil branched from the two pumps 1 and 2 is respectively directional control valves 3a and 3b, It is connected so as to be equally supplied to each work machine 5a, 5b, 5c, 5d, 5f including the turning motor 4 via 3c, 3d, 3e, 3f, 3g, and from the turning operation lever 6 The signal pressure line of is connected to both ends of the directional control valve 3a for turning operation.
그런데, 실제적으로는 각 작업기에서 요구하는 마력은 서로 상이하여, 버켓실린더, 암실린더 및 붐 실린더 등은 대개 높은 마력이 필요하나, 선회모타에서는 미세선회가 필요한 경우가 많으므로 낮은 마력이 요구되는 경우가 많고 이에 따라 펌프로부터의 공급유량을 낮추어 공급할 필요가 있는데, 상기한 종래의 중장비의 유압회로도에서는 선회조작레버(6) 조작에 따라 방향제어밸브(3a)가 작동되면, 펌프(1)로부터 항상 일정한 유량이 선회모타(4)로 공급되도록 있으므로, 좁은 공간에서 선회할 경우 등 미세한 선회 또는 느린 선회가 요구될 경우에도 평상시와 같은 속도로 선회가 이루어지게 되므로, 고도로 숙련된 운전자가 아니고서는 상기 조작이 어려울 뿐만 아니라 안전사고의 위험성도 높은 문제점이 있었다.However, in practice, the horsepower required by each work machine is different from each other. Bucket cylinders, arm cylinders and boom cylinders usually require high horsepower. However, since turning motors often require fine turning, low horsepower is required. In this case, in the conventional hydraulic circuit diagram of the heavy equipment, when the directional control valve 3a is operated in accordance with the swing operation lever 6 operation, the pump 1 is always used. Since a constant flow rate is supplied to the swing motor 4, even when a minute turn or a slow turn is required, such as when turning in a narrow space, the turn is made at a normal speed, so that the operation is not performed by a highly skilled driver. Not only this was difficult but there was also a high risk of safety accidents.
본 고안은 이상과 같은 문제점을 해결코자 안출된 것으로서, 조작레버의 신호압라인에 선회속도를 제어하기 위한 솔레노이드밸브들을 연결하고, 상기 솔레노이드밸브가 작동되면 펌프로부터 분기 공급된 압유는 드레인되도록 파일롯트밸브를 연결하여 상기 솔레노이드밸브의 조작에 의해 선회모타로 공급되는 유량이 제어되므로 작업내용에 따라 용이하게 선회속도를 제어할 수 있게 하는데에 그 목적이 있는 것이다.The present invention has been made to solve the above problems, connecting the solenoid valves for controlling the turning speed to the signal pressure line of the operation lever, and when the solenoid valve is operated, the pilot oil branched from the pump to drain Since the flow rate supplied to the swing motor is controlled by the operation of the solenoid valve by connecting the valve, the purpose is to enable the swing speed to be easily controlled according to the contents of the work.
첨부된 도면에 의하여 상세히 설명하면 다음과 같다.When described in detail with the accompanying drawings as follows.
제 1도에 도시된 바와 같이, 펌프(1, 2)로부터 분기된 유로는 각각의 방향제어밸브들(3a, 3b, 3c, 3d, 3e, 3f, 3g)를 경유하여 선회모타(4)를 포함한 각각의 작업기들(5a, 5b, 5c, 5d, 5e, 5f)에 연결되며, 선회조작레버(6)로부터의 신호압라인은 선회 작업용 방향제어밸브(3a)의 양단에 연결된 중장비 선회속도 제어회로에 있어서, 선회조작레버(6)의 신호압라인은 선회속도를 제어하기 위한 솔레노이드밸브들(8a, 8b)과 연결되고, 상기 솔레노이드밸브들(8a, 8b)은, 펌프(1)로부터 분기공급된 압유를 드레인제어하는 파일롯트밸브들(9a, 9b)과 연결된다.As shown in FIG. 1, the flow path branched from the pumps 1 and 2 passes through the turning motor 4 via the respective direction control valves 3a, 3b, 3c, 3d, 3e, 3f and 3g. It is connected to the respective working machines 5a, 5b, 5c, 5d, 5e, 5f, and the signal pressure line from the swing control lever 6 is connected to both ends of the directional control valve 3a for swing operation. In the circuit, the signal pressure line of the swing operation lever 6 is connected with solenoid valves 8a and 8b for controlling the swing speed, and the solenoid valves 8a and 8b branch off from the pump 1. It is connected to pilot valves 9a and 9b for draining the supplied hydraulic oil.
이와 같이 구성된 본 고안은 다음과 같이 작동된다.The present invention configured as described above operates as follows.
빠른 선회속도가 요구될 경우는 솔레노이드밸브들(8a, 8b)이 작동되지 않는 상태로서, 선회조작레버(6)의 신호압이 폐쇄되어 파일롯트밸브(9a, 9b)가 작동되지 않으므로, 펌프(1)로부터의 공급압유가 전혀 드레인됨 없이 방향제어밸브(3a)를 통해 선회모타(4)에 공급되어 빠른 선회가 이루어진다.When a high turning speed is required, the solenoid valves 8a and 8b are not operated, and since the signal pressure of the turning control lever 6 is closed and the pilot valves 9a and 9b are not operated, the pump ( The supply pressure oil from 1) is supplied to the turning motor 4 through the direction control valve 3a without any drainage, thereby making a quick turn.
반면에 느린 선회속도가 요구될 경우에는 솔레노이드밸브들(8a, 8b)을 작동시키면 선회조작레버(6)의 신호압이 파일롯트밸브(9a, 9b)에 작용되어 펌프(1)로부터의 압유를 일부 드레인시키게 되므로, 여분의 압유가 상기 방향제어밸브(3a)를 통해 선회모타(4)에 공급돼서 느린 선회가 이루어진다.On the other hand, when a slow swing speed is required, when the solenoid valves 8a and 8b are operated, the signal pressure of the swing control lever 6 is applied to the pilot valves 9a and 9b to supply the oil pressure from the pump 1. Since it is partially drained, the excess pressure oil is supplied to the swing motor 4 through the directional control valve 3a to make a slow swing.
이와 같이 본 고안은 선회속도를 제어하기 위한 솔레노이드밸브들(8a, 8b)와, 상기 솔레노이드밸브들(8a, 8b)와 연계 동작되며 펌프(1)로부터의 공급압유의 일부를 드레인제어하는 파일롯트밸브(9a, 9b)를 연결구성하여, 작업내용에 따라 선회속도를 제어할 수 있도록 하고, 특히 좁은 공간에서 미세한 선회가 가능하도록 하여 고도로 숙련되지 않은 운전자도 안전하게 선회작업이 가능케 한 우수한 고안이다.In this way, the present invention is operated in conjunction with the solenoid valves (8a, 8b), and the solenoid valves (8a, 8b) for controlling the swing speed, and a pilot for controlling a part of the supply pressure oil from the pump (1) The valves 9a and 9b are connected to each other so that the turning speed can be controlled according to the contents of the work, and in particular, fine turning is possible in a narrow space, thereby enabling the turning operation safely even for highly skilled drivers.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940030150U KR970007033Y1 (en) | 1994-11-15 | 1994-11-15 | Swing velocity control system in a heavy working machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940030150U KR970007033Y1 (en) | 1994-11-15 | 1994-11-15 | Swing velocity control system in a heavy working machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960017758U KR960017758U (en) | 1996-06-19 |
| KR970007033Y1 true KR970007033Y1 (en) | 1997-07-11 |
Family
ID=19398131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019940030150U KR970007033Y1 (en) | 1994-11-15 | 1994-11-15 | Swing velocity control system in a heavy working machine |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970007033Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100593512B1 (en) * | 1999-12-23 | 2006-06-28 | 두산인프라코어 주식회사 | Slewing Control Device of Hydraulic Heavy Equipment |
-
1994
- 1994-11-15 KR KR2019940030150U patent/KR970007033Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR960017758U (en) | 1996-06-19 |
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