KR940008351B1 - Oil-pressure control device of boom cylinder in wheel-loader - Google Patents

Oil-pressure control device of boom cylinder in wheel-loader Download PDF

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Publication number
KR940008351B1
KR940008351B1 KR1019900004622A KR900004622A KR940008351B1 KR 940008351 B1 KR940008351 B1 KR 940008351B1 KR 1019900004622 A KR1019900004622 A KR 1019900004622A KR 900004622 A KR900004622 A KR 900004622A KR 940008351 B1 KR940008351 B1 KR 940008351B1
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KR
South Korea
Prior art keywords
boom
loader
wheel
bucket
oil
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KR1019900004622A
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Korean (ko)
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KR910018643A (en
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조회래
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현대중장비산업 주식회사
김형벽
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Priority to KR1019900004622A priority Critical patent/KR940008351B1/en
Publication of KR910018643A publication Critical patent/KR910018643A/en
Application granted granted Critical
Publication of KR940008351B1 publication Critical patent/KR940008351B1/en

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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

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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

The device for offering simplified manipulation, enables the loader to lift a bucket boom simultaneously when needed in the backward running. The device comprises a switch (K) operated when the forward/backward running lever (11) is positioned for the backward state; a selection switch (S) connected with a solenoid valve (V) provided at hydraulic system line for lifting the bucket boom in the wheel loader (1).

Description

휠 로다의 후진시 붐자동 상승장치Boom auto lift device for reversing wheel loader

제1도는 휠 로다의 주요부 명칭 설명도.1 is an explanatory diagram of the names of the main parts of the wheel loader.

제2도는 본 발명이 장치된 장비의 주로 사용하는 조절장치의 개략도.2 is a schematic representation of a predominantly regulating device of a device equipped with the present invention.

제3도는 휠 로다로서 상차하는 작업의 개략도.3 is a schematic diagram of the work of loading as a wheel loader.

제4도는 본 발명이 장치된 장비의 유압 회로도.4 is a hydraulic circuit diagram of equipment equipped with the present invention.

본 발명은 휠 로다의 후진시 붐 자동 상승장치에 관한 것으로 주로 지상에 적재된 화물을 버켓으로 담아 차량에 상하시키는 휠 로다(WHEEL ROADER)에 있어서 후진시 필요에 따라 버켓의 붐도 같이 자동으로 상승되게 함으로서 운전조작의 행정이 생략되게 함으로서 운전조작의 행정이 생략되게 한 능률성과 편리성의 휠 로다를 제공함에 있다.The present invention relates to a device for automatically raising the boom when reversing the wheel loader. In the wheel loader, which mainly loads cargo loaded on the ground into a bucket and moves up and down the vehicle, the bucket boom automatically rises as needed when reversing. It is to provide a wheel loader of the efficiency and convenience that the stroke of the driving operation is omitted by eliminating the stroke of the driving operation.

로다의 작업중 주요작업인 상차작업은 제3도와 같이 로다 1의 버켓 2를 지상에 대고 전지하고 버켓 2로 화물 3을 굴삭한 후 붐 4를 상승시키고 후진하여 차량 5에 상차하는 행정으로 된 것이어서 화물을 담고 상차하기 위하여는 필히 버켓 2를 상승시키고 후진하여야 되는 데 본 발명은 운전자가 상승레버의 조작없이 후진시 자동으로 버켓 2가 상승되게 한 장치인 것이다.The loading work, which is the main work of the loader, was carried out by putting the bucket 2 of the loader 1 on the ground, digging the cargo 3 with the bucket 2, raising the boom 4 and backing up, and loading it onto the vehicle 5. In order to load the vehicle, the bucket 2 must be raised and retracted. The present invention is a device in which the driver automatically raises the bucket 2 when the driver reverses without operating the lever.

종래의 구조는 이와 같은 후진시 버켓의 상승 레버를 필히 조작해야 됨으로 운전자의 작업행정이 그 만큼 추가되어 피로감이 가중되었다.In the conventional structure, the lifting lever of the bucket must be operated at the time of reversing, so that the operator's work stroke is added to increase the feeling of fatigue.

본 발명은 이와 같은 종래의 결점을 제거코져 후진시 버켓이 자동으로 상승되게 한 것으로 발명의 요지를 첨부도면에 의하여 상세히 설명하면 다음과 같다.The present invention is to remove the conventional defects such that the bucket is automatically raised when the reverse when described in detail by the accompanying drawings to the subject matter of the invention as follows.

먼저 제1도와 같이 본 발명이 장치되는 로다 1의 주요부 명칭은 버켓 2가 붐 4에 연결되어 버켓 실린더 6에 의해 작동되고 붐 4는 붐 실린더 7에 의해 작동되며 운전자가 운전실 8에서 운전하는데 운전실 8내부에는 계기판 9의 옆에 핸들 10이 있고 그 아래 전ㆍ후진레버 11이 설치되어 있으며, 별도로 붐 작동레버 12와 버켓 작동레버 13이 설치되어 있다.First, as shown in FIG. 1, the name of the main part of the roda 1 to which the present invention is installed is referred to as bucket 2 connected to the boom 4 and operated by the bucket cylinder 6, and the boom 4 is operated by the boom cylinder 7 and the driver operates in the cab 8 Inside, there is a handle 10 next to the instrument panel 9, and a forward and reverse lever 11 is installed below it, and a boom operating lever 12 and a bucket operating lever 13 are installed separately.

본 발명은 전ㆍ후진레버 11의 후진측 유압라인에 선택스위치 S를 경유 붐 실린더 7을 작동시키는 전ㆍ후진레버 11의 후진 위치에 작동되는 스위치 K를 설치하고 이를 붐 상승 유압라인 솔레노이드 밸브 V에 유기적으로 연결 설치한 구조이다.The present invention installs a switch K which is operated at the reverse position of the forward and reverse lever 11 for operating the boom cylinder 7 via the selector switch S on the reverse side hydraulic line of the forward and reverse lever 11 and connects it to the boom up hydraulic line solenoid valve V. It is an organically installed structure.

도면중 미설명부호 14는 악셀레이타 페달, 15는 브레이크 페달이다.In the drawings, reference numeral 14 denotes an accelerator pedal and 15 a brake pedal.

이와 같이 된 본 발명은 후진레버의 작동시 후진레버에 장치된 스위치에 의하여 솔레노이드 밸브 V 가 작동됨으로서 붐 실린더 7에 작동유를 공급하여 붐 4가 후진시 자동으로 상승되며 상승중 필요에 의하여 멈출때는 기존 작업과 같이 붐 작동레버 12를 움직여 작동할 수 있다. 또한 작업장의 조건에 따라 계기판의 선택스위치 S를 부착하여 운전자의 판단에 의해 본 발명 장치를 활용할 수 있는 것이다.In the present invention, the solenoid valve V is operated by a switch installed in the reverse lever during operation of the reverse lever to supply hydraulic oil to the boom cylinder 7 so that the boom 4 is automatically raised when reversing and stops when necessary during the upward movement. It can be operated by moving boom lever 12 as work. In addition, by attaching the selection switch S of the instrument panel according to the conditions of the workplace, the device of the present invention can be utilized at the discretion of the driver.

그러므로 본 발명의 적용시 운전자는 후진레버의 작동만으로 장비의 후진 및 붐의 상승동작을 동시에 행할 수 있어 운전자의 운전동작을 줄이므로 피로도 저하와 로다 전체의 능률성을 부가하여 품질향상에 기여하는 효과가 있는 것이다.Therefore, when applying the present invention, the driver can simultaneously perform the backward movement of the equipment and the ascending movement of the boom only by the operation of the reverse lever, thereby reducing the driving operation of the driver, thereby reducing fatigue and adding efficiency to the entire loader to contribute to quality improvement. There is.

Claims (1)

휠 로다 1에 있어서, 전ㆍ후진레버 11의 후진시 작동되는 스위치 K를 설치하여 이를 선택스위치 S를 경유 붐 상승 유압라인의 솔레노이드 밸브 V에 유기적으로 연결 설치함으로서 후진시 붐이 상승되게 함을 특징으로 하는 휠 로다의 후진시 붐 자동 상승장치.In wheel loader 1, switch K, which is operated when reversing forward and backward lever 11, is installed, and it is connected to selector switch S via the boom up hydraulic line solenoid valve V so that the boom is raised when reversing. Boom automatic lift on reverse of wheel loader.
KR1019900004622A 1990-04-04 1990-04-04 Oil-pressure control device of boom cylinder in wheel-loader KR940008351B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900004622A KR940008351B1 (en) 1990-04-04 1990-04-04 Oil-pressure control device of boom cylinder in wheel-loader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900004622A KR940008351B1 (en) 1990-04-04 1990-04-04 Oil-pressure control device of boom cylinder in wheel-loader

Publications (2)

Publication Number Publication Date
KR910018643A KR910018643A (en) 1991-11-30
KR940008351B1 true KR940008351B1 (en) 1994-09-12

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110020406A (en) * 2009-08-24 2011-03-03 두산인프라코어 주식회사 Apparatus and method for controlling operating automatically working unit of wheel loader

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110020406A (en) * 2009-08-24 2011-03-03 두산인프라코어 주식회사 Apparatus and method for controlling operating automatically working unit of wheel loader
WO2011025197A3 (en) * 2009-08-24 2011-07-07 두산인프라코어 주식회사 Automatic operation control device and method for wheel loader work equipment
US9091044B2 (en) 2009-08-24 2015-07-28 Doosan Infracore Co., Ltd. Apparatus and method for controlling automatic operation of working unit of wheel loader
EP2472011A4 (en) * 2009-08-24 2017-07-05 Doosan Infracore Co., Ltd. Automatic operation control device and method for wheel loader work equipment

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Publication number Publication date
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