KR20080060149A - Farming machine - Google Patents

Farming machine Download PDF

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Publication number
KR20080060149A
KR20080060149A KR1020070126272A KR20070126272A KR20080060149A KR 20080060149 A KR20080060149 A KR 20080060149A KR 1020070126272 A KR1020070126272 A KR 1020070126272A KR 20070126272 A KR20070126272 A KR 20070126272A KR 20080060149 A KR20080060149 A KR 20080060149A
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South Korea
Prior art keywords
work
work part
drive
lowering
work area
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KR1020070126272A
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Korean (ko)
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KR100923238B1 (en
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노리오 마츠우라
카즈히로 다케가와
히사시 가미야
미츠타카 이즈미
히데유키 구사모토
야스히로 하야시
료 야마구치
야스후미 다마이
타카시 이케다
테츠오 세토가와
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이세키노우키가부시키가이샤
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/02—Transplanting machines for seedlings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/006—Other parts or details or planting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Transplanting Machines (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

A farming machine combined with a manipulator is provided to facilitate the work while climbing over a ridge by ascending a work area, and to expand a work range in the ridge. A farming machine comprises: an ascending movement manipulator(23U) for ascending a work area up to a non-work position; a descending movement manipulator(23D) for descending the work area to a ground contact position; a random manipulator(24) for ascending/descending the work area; a drive switch unit for turning the work area into a drive state or a non-drive state; a controller(22) for descending and ascending the work area in a non-drive/drive state only during the operation state of the random manipulator; a lift link sensor(26) for detecting an ascended position of an elevation link; and an actuator sensor(27) installed in the manipulation drive equipment at a PTO clutch.

Description

농작업기{Farming machine}Farming machine

본 발명은 트랙터나 모식기 등의 농작업기에 관한 것이다.The present invention relates to an agricultural work machine such as a tractor or a modeling machine.

특허 문헌 1에 나타내는 바와 같이, 변속레버의 그립부에는 상승조작장치 및 하강조작장치로서 누를 때마다 작업부를 상승과 상승정지로 전환하는 상승버튼, 누를 때마다 하강과 하강정지로 전환하는 하강버튼과, 또한 임의하강조작장치로서 상기 하강버튼과는 별도로 하강 전용의 하강버튼이 설치되어 있다.As shown in Patent Literature 1, the grip portion of the shift lever includes an ascending operation device and a descending operation device, an up button for switching the work portion to an up and down stop every time it is pressed, a down button for switching down and down stop each time it is pressed; In addition, as the arbitrary lowering operation apparatus, a lowering dedicated button for lowering is provided separately from the lowering button.

[특허문헌] 특개 2002－153107호 공보[Patent Document] Japanese Patent Laid-Open No. 2002-153107

본 발명의 과제는 종래의 임의하강조작장치를, 작업부를 상승시키는 조작 장치로서도 이용할 수 있도록 겸용화를 도모하고, 밭두렁을 넘을 때에 작업부를 올리면서 작업을 실시할 수 있도록 하여, 밭두렁을 넘으면서 작업을 용이하게 하고, 침지에서의 작업 범위의 확대화를 도모하는 것이다.SUMMARY OF THE INVENTION The present invention aims to make the conventional arbitrary lowering operation device to be used as an operation device for raising a work part, and to work while raising the work part when the field is overrun, so that the work can be carried out while the field is overrun. It is intended to facilitate the expansion of the working range in immersion.

본 발명은 상기 과제를 해결하기 위하여 다음과 같은 기술적 수단을 강구했다.The present invention has been made the following technical means to solve the above problems.

즉, 청구항 제1항 기재의 본 발명은, 주행차체(1)에 승강링크기구(9)를 통하여 작업부(10)를 장착하고, 유압승강실린더(11)에 의해 작업부(10)를 승강자유자재로 설치하고, 작업부(10)에 설치한 대지센서(25)의 검출 결과에 근거하여 작업부(10)를 소정의 대지 높이로 승강 제어하는 농작업기에 있어서, 작업부(10)를 비작업 위치까지 상승시키는 상승조작장치(23U)를 설치하고, 작업부(10)를 접지하는 위치까지 하강시키는 하강조작장치(23D)를 설치하고, 작업부(10)를 상승 및 하강시키는 임의조작장치(24)를 설치하고, 작업부(10)를 구동 상태와 비구동 상태로 전환하는 구동입절장치(16)를 설치하고, 작업부(10)가 비구동 상태에서는 임의조작장치(24)의 조작 동안만 상기 작업부(10)를 하강시키며, 작업부(10)가 구동 상태에서는 임의조작장치(24)의 조작 동안만 상기 작업부(10)를 상승시키는 제어장치(22)를 설치한 농작업기인 것이다.That is, according to the present invention described in claim 1, the work part 10 is mounted on the traveling vehicle body 1 via the lifting link mechanism 9, and the work part 10 is lifted by the hydraulic lifting cylinder 11. In the agricultural work machine which freely installs and raises and controls the work part 10 to predetermined land height based on the detection result of the ground sensor 25 installed in the work part 10, the work part 10 is moved. Arbitrary operation for installing the lifting operation apparatus 23U for raising to the non-working position, installing the lowering operation apparatus 23D for lowering the working portion 10 to the grounding position, and raising and lowering the working portion 10. A device 24 is provided, and a drive indentation device 16 is provided to switch the work part 10 to a driving state and a non-driven state. The work part 10 is lowered only during the operation, and the work part 10 is driven only during the operation of the arbitrary operation device 24 while the work part 10 is driven. To the agricultural working machine by installing the control unit 22 to raise the unit 10.

대지센서(25)에 의해 소정의 대지 높이가 되도록 작업부(10)가 자동적으로 승강제어된다. 상승조작장치(23U)의 조작에 의해서 작업부(10)를 비작업 위치까지 상승시키거나 하강조작장치(23D)의 조작에 의해서 작업부(10)를 접지하는 위치까지 하강하거나 하는 것을 할 수 있다.The work part 10 is automatically lifted and controlled by the site sensor 25 so as to become a predetermined site height. It is possible to raise the work part 10 to the non-working position by the operation of the lift operation device 23U or to lower the work part 10 to the position where the work part 10 is grounded by the operation of the lower operation device 23D. .

임의조작장치(24)는 작업부(10)가 비구동 상태에서는 조작하고 있는 동안만 작업부(10)를 하강시킬 수 있고, 작업부(10)가 구동 상태에서는 조작하고 있는 동안만 작업부(10)를 상승시킬 수 있다. 따라서, 작업을 행하면서 밭면을 나올 때(밭두렁을 넘을때), 이 임의조작장치(24)를 사용하면, 밭두렁을 넘을 때에 주행차체(1)의 앞 상승에 의해서 침하하는 작업부(10)를 서서히 올리면서 작업할 수 있고, 침지에서의 작업 범위가 확대되며 조작장치의 합리적인 겸용화가 가능하다.The arbitrary operating device 24 can lower the work part 10 only while the work part 10 is operating in the non-driven state, and the work part (only while the work part 10 is operating in the driving state). 10) can be raised. Therefore, when the field surface is exited while the work is being performed (when over the field), the arbitrary operating device 24 allows the work unit 10 to sink by the front rise of the traveling vehicle body 1 when the field is over the field. Can work slowly while raising, the working range in immersion is expanded, and the rationalization of the operation device is possible.

청구항 제1항 기재의 본 발명에 의하면, 작업부의 구동을 입절(入切)하는(넣거나 끊는) 구동입절장치의 조작에 의해서 작업부가 구동 상태에 있을 때, 임의조작장치를 조작하면, 조작하고 있는 동안만 작업부를 상승시킬 수 있으므로, 작업을 행하면서 밭두렁을 넘을 때, 이 임의조작장치를 사용하면, 밭두렁을 넘을 때에 침하하는 작업부를 서서히 올리면서 작업할 수 있고, 침지에서의 작업 범위가 큰폭으로 확대되며 조작 장치의 합리적인 겸용화를 도모할 수 있다.According to the present invention as set forth in claim 1, the arbitrary operating device is operated when the working part is in the driving state by the operation of the drive entering / stopping device which cuts (inserts or breaks) the drive of the working part. Since the work unit can only be raised for a while, this random operation device can be used to work while gradually raising the work unit that sinks when crossing the field, and the working range in the immersion is greatly increased. It can be expanded and reasonable rationalization of the operating device can be achieved.

본 발명의 실시예를 도면에 근거하여 설명한다.An embodiment of the present invention will be described with reference to the drawings.

도 1 및 도 2는 주행 차량의 일례로서 시비(施肥)장치를 구비한 승용형 모식 기를 나타내는 것이고, 이 주행차체(1)의 대략 중앙에 구동원인 엔진(E)을 탑재하고, 이 엔진(E)의 회전동력을 미션케이스(2)내의 변속장치에 전달하고, 이 변속장치로 감속된 회전동력을 앞바퀴(4)및 뒷바퀴(5)에 전하도록 하고 있다. 엔진(E)의 윗쪽에 운전석(6)이 설치되고, 운전석(6)의 전방에는 조작박스(3)나 앞바퀴(4, 4)를 조타(操舵)하는 스티어링핸들(7)이 장비(裝備)되고, 또한, 주행차체(1)의 후부에는 작업부로서 모이식부(10)가 승강링크기구(9)를 통하여 장착되고, 이 모이식부(10)와 주행차체(1)와의 사이에는 모이식부를 상하로 승강하는 유압승강실린더(11)가 장비되어 있다.1 and 2 show a passenger type modeling machine equipped with a fertilizer as an example of a traveling vehicle, and an engine E serving as a driving source is mounted in the center of the traveling vehicle body 1, and the engine E Is transmitted to the transmission in the mission case (2), and the rotational power reduced by the transmission is transmitted to the front wheel (4) and the rear wheel (5). The driver's seat 6 is installed above the engine E, and the steering wheel 7 that steers the operation box 3 or the front wheels 4 and 4 is provided in front of the driver's seat 6. In addition, the rear end of the traveling vehicle body 1 is mounted with a feed unit 10 as a work unit via the lifting link mechanism 9, and the transplanting unit 10 is between the feed unit 10 and the traveling vehicle body 1. The hydraulic lifting cylinder 11 which moves up and down is equipped.

모이식부(10)는 본례에서는 8조식의 구성으로, 이식조 수분으로 나누어진 모재면에 흙부착의 매트모양의 모가 재치(載置)되는 묘재탱크(12)와 묘재탱크상의 모종을 밭면에 심는 이식조 수분의 이식장치(13)와 밭면 위를 활주하여 고르게하는 플로트(14)등으로 되고, 상기 유압승강실린더(11)의 신축에 의해 승강시키고, 비작업 위치로 상승하거나 대지작업 위치(대지이식위치)로 하강하거나 할 수 있다. 또, 모이식부(10)로의 동력전달은 상기 엔진(E)으로부터 PTO축(15)을 통하여 행해지고, 이 PTO축(15)의 전동을 넣거나 끊는 구동입절장치가 되는 PTO클러치(16)를 통하여 행해진다.In the present example, the seedling transplanting part 10 is an eight-jolt structure, and the seedling tank 12 and the seedlings on the seedling tank are planted on the field surface in which mat-like hairs with soil are placed on the base material divided into the water of the transplantation tank. Implants 13 of the graft water and the float 14 to slide evenly on the field surface, and the lifting and lifting by the expansion and contraction of the hydraulic lifting cylinder 11, to the non-working position or to the earth work position (ground Descending position). Further, power transmission to the feed unit 10 is performed through the PTO shaft 15 from the engine E, and is performed through the PTO clutch 16 serving as a drive-in / out device for turning on or off the power of the PTO shaft 15. All.

주행차체(1)의 주행은 엔진(E)의 구동에 의해서 유압무단변속장치(17)의 주변속장치나 부변속장치등을 거쳐 앞바퀴(4, 4), 뒷바퀴(5, 5)를 구동하여 주행하는 구성으로 되어 있다.The traveling vehicle body 1 is driven by the engine E to drive the front wheels 4 and 4 and the rear wheels 5 and 5 via the peripheral gear and the auxiliary transmission of the hydraulic continuously variable transmission 17. It is a structure which runs.

유압무단변속장치(17)은 운전석(6)의 우측으로 설치되는 변속레버(18)에 의 해서 변속 조작된다. 이 변속레버(18)를 중립 위치에서 앞쪽으로 조작함으로써 전진 고속 상태로 하고, 중립 위치에서 뒤쪽으로 조작함으로써 후진 고속 상태로 하고, 변속레버(18)의 경사 각도에 따라 전, 후진 속도를 증감속제어할 수 있다. 또한, 부변속레버(19)는 조작박스(3)의 옆쪽에 설치되어 있다.The hydraulic continuously variable transmission 17 is shifted by the shift lever 18 provided on the right side of the driver's seat 6. By operating the shift lever 18 forward from the neutral position to the forward high speed state, by operating backward from the neutral position to the reverse high speed state, the forward and reverse speeds increase and decrease according to the inclination angle of the shift lever 18. Can be controlled. In addition, the sub transmission lever 19 is provided on the side of the operation box 3.

상기 유압승강실린더(11)를 신축하는 유압회로의 승강제어밸브(20)와 PTO클러치(16)가 전동모터(21M) 내지 스텝모터 등에 의한 액츄에이터(21)에 의해서 조작구동기구(도시 생략)를 통하여 연동된다. 조작구동기구는 승강제어밸브(20)와 PTO클러치(16)를 구동함과 동시에, 운전석(6) 옆쪽의 수동조작용의 승강레버(8)도 구동할 수 있는 구성으로 되어 있다. 액츄에이터(21)는 상기 변속레버(18)의 그립부에 설치되는 후기의 상승스위치(23U) 및 하강스위치(23D)의 ON, OFF 조작에 의해서 제어장치가 되는 콘트롤러(22)로부터의 출력에 의해서 작동된다. 변속레버(18)의 그립부에는 모이식부(10)를 대지부상 위치까지 상승시키는 상승조작장치로서 상승스위치(23U), 접지하는 위치까지 하강시키는 하강조작장치로서 하강스위치(23D)를 설치하고 있어, 차속변속에서부터 모이식부(10)의 승강, 작업전동에 이르는 일련의 조작을 그립부에서 꽉 쥔 손을 교환하지 않고, 또는, 변속조작하면서의 승강조작이나 이식전동 조작을 실시할 수 있도록 하고 있다.The elevating control valve 20 and the PTO clutch 16 of the hydraulic circuit for expanding and contracting the hydraulic elevating cylinder 11 are operated by the actuator 21 by the electric motor 21M to the step motor or the like. It is linked through. The operation drive mechanism is configured to drive the lift control valve 20 and the PTO clutch 16 and also to drive the lift lever 8 of the manual operation on the side of the driver's seat 6. The actuator 21 is operated by the output from the controller 22 which becomes a control device by the ON / OFF operation of the late rise switch 23U and the down switch 23D provided in the grip portion of the shift lever 18. do. A grip switch of the shift lever 18 is provided with a lift switch 23U as a lift operation device for raising the feed unit 10 to a ground floating position, and a drop switch 23D as a pull operation device for lowering to a ground position. A series of operations ranging from the vehicle speed shift to the lifting and lowering of the feed unit 10 and the work transmission are performed so that the lifting operation and the transplantation driving operation can be performed without changing the gripped hands at the grip unit or shifting operation.

또, 변속레버(18)의 그립부에는 상기 상승스위치(23U) 및 하강스위치(23D)와는 다른 임의조작장치로서 임의하강작업스위치(24)를 설치하고 있고, 이 임의하강작업스위치(24)는 이 임의하강조작에 의해서 작업부가 대지부상하고 있는 상태에서 조작하고 있는 동안만 접지하는 위치까지 임의 하강시킬 수 있고, 또, 모이식 부(10)의 구동을 입절하는 구동입절장치의 조작에 의해서, 예를 들면, 센터 플로트(14c)의 상하에 의해 대지센서가 되는 접지센서(25)의 검출에 의해서 모이식부(10)가 일정한 작업 위치에 하강한 상태일 때, PTO클러치(16)가 들어가 작동되어 모이식작업을 행하는 태세로 하고, 그리고, 이러한 이식부 구동상태로 모이식작업 태세에 있을 때에는 임의하강작업스위치(24)를 조작하면, 조작하고 있는 동안만 이식부를 임의상승제어할 수 있는 임의상승제어장치(A)가 콘트롤러(22)에 제어 프로그램 형식으로 구비되어 있다. 침지에서의 이식작업시에는 이식부를 하강시켜 이식부 구동 상태로 이식작업을 행한다. 이 이식작업을 행하면서 밭면의 단(端)에 도달하여 밭두렁을 넘을 때에는 이 임의하강작업스위치(24)의 조작에 의해서, 밭두렁을 넘을 때에 주행차체 앞부분의 앞쪽상승에 의해 뒷부분의 이식부가 하강 침하하는 것을 서서히 올리면서 이식작업을 실시할 수 있다.Moreover, the arbitrary lowering operation switch 24 is provided in the grip part of the shift lever 18 as an arbitrary operation apparatus different from the said rising switch 23U and the lowering switch 23D. By the arbitrary lowering operation, it can be arbitrarily lowered to the grounding position only while the work part is operating in the state of earth injury, and also by the operation of the drive cutting apparatus which cuts off the drive of the feed unit 10, For example, the PTO clutch 16 enters and operates when the feed unit 10 is lowered to a certain work position by the detection of the ground sensor 25 which becomes the ground sensor by the up and down of the center float 14c. When the transplantation operation is in the transplantation operation state, the arbitrary lowering operation switch 24 is operated to arbitrarily control the rise of the implant only during operation. Is W control apparatus (A) is provided with a control program form the controller 22. At the time of implantation in immersion, the transplantation is performed by lowering the implant and driving the implant. When this transplantation is carried out, when the end of the field is reached and the field is crossed, by the operation of the arbitrary lowering operation switch 24, when the field is crossed, the transplantation part of the rear part is lowered by the forward rise of the front part of the traveling vehicle. You can slowly carry out the transplant work.

또한, 상기 임의하강작업스위치(24)는 임의 상승 제어시에 있어서, 조작하고 있는 시간(누르는 시간)에 관계없이 1회 누를 때마다 규정량씩 상승하도록 구성해 두면, 과도한 상승은 없어지게 되고, 과도한 상승에 의해 공중 이식되는 걱정이 없게 된다. 또, 이 규정량씩의 상승량을 마이크로컴퓨터 체커(checker)로 변경할 수 있도록 하는 것도 가능하다.In addition, if the arbitrary lowering operation switch 24 is configured to rise by a prescribed amount every time it is pressed regardless of the operating time (pressing time) during the arbitrary rising control, excessive rising is eliminated and excessive There is no worry about being airborne by the ascension. It is also possible to change the rising amount of each prescribed amount by a microcomputer checker.

또한, 도 5에 있어서, 콘트롤러(22)의 입력쪽에는 승강링크기구(9)의 승강 위치를 검출하는 리프트링크센서(26), PTO 클러치에의 조작구동기구중에 설치되는 액츄에이터 센서(27)를 설치하고 있다. 또한, 상기 리프트링크센서(26)의 검출 결과에 의해 PTO축의 전동이 단절되게 된다.5, a lift link sensor 26 for detecting the lift position of the lift link mechanism 9 and an actuator sensor 27 provided in the operation drive mechanism for the PTO clutch are provided on the input side of the controller 22. In FIG. I install it. In addition, the transmission of the PTO shaft is disconnected by the detection result of the lift link sensor 26.

묘재탱크(12)의 좌우 양측부에 방향 지시기가 되는 윙카램프(48, 48)를 배치하여 설치하고 있고, 스티어링 핸들 근처에 윙카스위치(49)를, 운전석 근처에는 작업등 스위치(50)가 각각 설치되어 있다. 그리고, 노상 주행 이외에서는, 사용하지 않는 윙카램프를 밭면 작업시에는 작업등으로서 사용할 수 있도록 하고 있다. 예를 들면, 작업등으로서 사용하는 경우에는 윙카램프(48, 48)를 회전시킴으로써 렌즈색을 황색에서 백색으로 전환하고, 동시에 점멸에서 점등으로 전환할 수 있다.The wing car lamps 48 and 48, which are directional indicators, are disposed on both left and right sides of the seedling tank 12. The wing car switches 49 are disposed near the steering wheel, and the work light switch 50 is disposed near the driver's seat. It is installed. In addition, it is possible to use an unused wing car lamp as a work light at the time of field work other than the road running. For example, when used as a work lamp, the lens color can be switched from yellow to white by rotating the wing car lamps 48 and 48, and at the same time, it can be switched from flashing to lighting.

도 1은 모식기의 측면도이다. 1 is a side view of a modeling machine.

도 2는 전술한 모식기의 평면도이다. 2 is a plan view of the modeling machine described above.

도 3는 변속 레버부의 정면도와 측면도이다. 3 is a front view and a side view of a shift lever portion.

도 4 는 전동 경로의 블럭도이다. 4 is a block diagram of a transmission path.

도 5 는 조작 제어 블럭도이다. 5 is an operation control block diagram.

*부호의 설명 * Description of the sign

1：주행 차체1: driving body

10：작업부(모이식부)10: Work department (plant transplanting department)

16：PTO 클러치16: PTO clutch

22：콘트롤러22: Controller

23U：상승 스위치23U: Lift switch

23D：하강 스위치23D: Lowering switch

24：임의하강작업스위치24 ： Random lowering switch

25：접지 센서25: Earth sensor

Claims (1)

주행차체(1)에 승강링크기구(9)를 통하여 작업부(10)를 장착하고, 유압승강실린더(11)에 의해 작업부(10)를 승강자유자재로 설치하고, 작업부(10)에 설치한 대지센서(25)의 검출 결과에 근거하여 작업부(10)를 소정의 대지 높이로 승강 제어하는 농작업기에 있어서, 작업부(10)를 비작업 위치까지 상승시키는 상승조작장치(23U)를 설치하고, 작업부(10)를 접지하는 위치까지 하강시키는 하강조작장치(23D)를 설치하고, 작업부(10)를 상승 및 하강시키는 임의조작장치(24)를 설치하고, 작업부(10)를 구동상태와 비구동상태로 바꾸는 구동입절장치(16)를 설치하고, 작업부(10)가 비구동 상태에서는 임의조작장치(24)의 조작동안만 상기 작업부(10)를 하강시키며, 작업부(10)가 구동 상태에서는 임의조작장치(24)의 조작동안만 상기 작업부(10)를 상승시키는 제어장치(22)를 설치한 농작업기.The work part 10 is attached to the traveling vehicle body 1 via the lifting link mechanism 9, and the work part 10 is installed at the work part 10 by the hydraulic lifting cylinder 11. In the agricultural work machine which raises and lowers the work part 10 to a predetermined site height based on the detection result of the installed ground sensor 25, the lifting operation apparatus 23U which raises the work part 10 to a non-working position. , A lowering operation device 23D for lowering to the position where the working part 10 is grounded, an arbitrary operating device 24 for raising and lowering the working part 10, and a working part 10. ) Is provided with a drive awning device 16 for changing the driving state and the non-driven state, and when the work part 10 is in the non-driven state, the work part 10 is lowered only during the operation of the arbitrary operating device 24. When the work part 10 is in a driving state, the control device 22 is provided to raise the work part 10 only during the operation of the arbitrary operating device 24. Agricultural working machine.
KR1020070126272A 2006-12-26 2007-12-06 Farming machine KR100923238B1 (en)

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