KR20070068510A - Wheel excavator steering conversion system - Google Patents

Wheel excavator steering conversion system Download PDF

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Publication number
KR20070068510A
KR20070068510A KR1020050130190A KR20050130190A KR20070068510A KR 20070068510 A KR20070068510 A KR 20070068510A KR 1020050130190 A KR1020050130190 A KR 1020050130190A KR 20050130190 A KR20050130190 A KR 20050130190A KR 20070068510 A KR20070068510 A KR 20070068510A
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South Korea
Prior art keywords
steering
wheel
excavator
driver
valve
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KR1020050130190A
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Korean (ko)
Inventor
김남영
문원식
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현대중공업 주식회사
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Priority to KR1020050130190A priority Critical patent/KR20070068510A/en
Publication of KR20070068510A publication Critical patent/KR20070068510A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
    • B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
    • B62D1/16—Steering columns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

An apparatus and a method for changing a steering direction of a wheel excavator are provided to enable an operator to drive a wheel in an opposite steering direction by using a directional control valve when the operator intends to change the steering direction. A driver operates an operational switch(S100). A direction control valve is driven according to the operation selection of the operational switch, so that a direction of supplying a hydraulic fluid to a steering cylinder from a steering valve(S200). A steering handle is driven after the operation of the direction control valve(S300). The hydraulic fluid is supplied to the steering cylinder through the direction control valve according to the rotation of the steering handle(S400). The steering cylinder is driven according to the direction of the supplied hydraulic fluid to make the rotation direction of the steering handle in opposition to the steering direction of the excavator, such that the steering direction of the steering handle is identical to the forwarding direction of the excavator regardless of the position of a front attachment.

Description

휠 굴삭기 조향 방향전환 방법 및 그 장치 {Wheel excavator steering conversion system}Wheel excavator steering conversion method and apparatus therefor {Wheel excavator steering conversion system}

도 1 은 본 발명에 따른 전체 구성을 보인 예시도1 is an exemplary view showing the overall configuration according to the present invention

도 2 는 본 발명에 따른 방향전환을 보인 블록예시도Figure 2 is a block diagram showing a direction change in accordance with the present invention

도 3 은 본 발명의 일실시예를 보인 블록예시도Figure 3 is a block diagram showing an embodiment of the present invention

도 4 는 본 발명의 또다른 실시예를 보인 블록예시도Figure 4 is a block diagram showing another embodiment of the present invention

도 5 는 종래의 휠굴삭기 조향 방향전환을 보인 블록예시도Figure 5 is a block diagram showing a conventional wheel excavator steering direction change

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

(10) : 조향핸들 (20) : 조향실린더(10): steering wheel (20): steering cylinder

(30) : 조향밸브 (40) : 방향전환밸브(30): steering valve (40): directional valve

(50) : 작동스위치(50): Operation switch

본 발명은 휠 굴삭기 조향 방향전환 방법 및 그 장치에 관한 것으로, 운전석의 위치방향에 관계없이 주행하고자 하는 방향으로 조향방향을 쉽게 전환할 수 있 는 휠 굴삭기 조향 방향전환 방법 및 그 장치에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel excavator steering direction switching method and apparatus therefor, and to a wheel excavator steering direction switching method and apparatus for easily changing a steering direction in a direction to be driven regardless of a driver's position direction.

일반적으로 휠 굴삭기는 작업중 상부를 180도 선회하여 작업하는 경우가 많이 있으며, 이와 같이 굴삭기의 상부 즉, 운전석이 180도 선회될 경우, 조향밸브의 작동방향과 휠 굴삭기의 실제 회전방향은 서로 반대가 되게 된다. 즉, 종래의 굴삭기의 조향시스템은 도 5 에 도시된 바와 같이, 조향밸브를 통해서 운전자가 스티어링 핸들을 오른쪽으로 돌리면 굴삭기가 오른쪽으로 주행하고, 왼쪽으로 돌리면 왼쪽으로 주행하도록 되어 있으나, 상기와 같이, 운전석이 180도 선회되어 있을 경우, 스티어링 핸들을 오른쪽으로 돌리면 굴삭기는 외쪽으로 주행하고, 외쪽으로 돌리면 굴삭기는 오른쪽으로 주행하도록 되어 있어, 고도의 숙련자가 아니라면, 굴삭기의 상부선회체와 하부구동체가 반대방향으로 변경되었을 경우, 운전자가 혼돈하여 전진하고자 밀었을 때, 후진하게 되고, 후진하고자 할 때, 전진하게 되므로, 가까운 지점에 위치한 인명 또는 건물에 매우 큰 위험성을 가중시키는 문제점이 있었다. In general, a wheel excavator rotates the upper part 180 degrees during operation, and when the upper part of the excavator, that is, the driver's seat is rotated 180 degrees, the operating direction of the steering valve and the actual rotation direction of the wheel excavator are opposite to each other. Will be. That is, the conventional steering system of the excavator, as shown in Figure 5, when the driver turns the steering wheel to the right through the steering valve, the excavator travels to the right, and to the left to drive to the left, as described above, If the driver's seat is turned 180 degrees, turning the steering wheel to the right will cause the excavator to move outwards, and turning it out will turn the excavator to the right. In the case of a change in the direction, when the driver pushes forward for chaos, the driver reverses, and when moving backwards, the driver moves forward, thus adding a great danger to a person or building located at a nearby point.

본 발명은 상기와 같은 문제점을 해소하기 위한 것으로, 그 목적은 굴삭기 상부선회체의 방향에 관계없이 운전자의 조향방향에 따라 주행하도록 하여, 주행편리성 및 작업성을 향상시키고, 이를 통해 안전사고를 미연에 방지할 수 있는 휠 굴삭기 조향 방향전환 방법 및 그 장치를 제공하는 것이다.The present invention is to solve the above problems, the object is to drive in accordance with the steering direction of the driver regardless of the direction of the excavator upper swing structure, to improve the driving convenience and workability, thereby improving safety accidents The present invention provides a wheel excavator steering direction change method and a device which can be prevented in advance.

도 1 은 본 발명에 따른 전체 구성을 보인 예시도를, 도 2 는 본 발명에 따른 방향전환을 보인 블록예시도를 도시한 것으로, 본 발명은 운전자에 의해 작동스위치의 작동시키는 단계(S100), 상기 작동스위치의 작동선택에 따라 방향전환밸브가 작동되어 조향밸브로부터 조향실린더로의 유압유 공급방향을 변환하는 단계(S200), 상기 방향전환밸브의 작동 후 조향핸들의 구동시키는 단계(S300), 상기 조향핸들의 회전작동에 따라 유압유가 방향전환밸브를 통해 조향실린더로 공급되는 단계(S400), 상기 공급되는 유압유의 방향에 따라 조향실린더가 작동되어 조향핸들의 회전방향과 실제 굴삭기의 조향방향을 반대로 구동시키는 단계(S500)로 이루어져 있다. 1 is an exemplary view showing an overall configuration according to the present invention, Figure 2 is a block diagram showing a direction change according to the present invention, the present invention is the step of operating the operation switch by the driver (S100), Direction switching valve is operated according to the operation selection of the operation switch to switch the hydraulic oil supply direction from the steering valve to the steering cylinder (S200), driving the steering wheel after the operation of the direction switching valve (S300), the The hydraulic oil is supplied to the steering cylinder through the steering valve in accordance with the rotation operation of the steering wheel (S400), the steering cylinder is operated according to the direction of the supplied hydraulic oil to reverse the steering direction of the steering wheel and the actual steering direction of the excavator. Driving step (S500).

즉, 본 발명은 운전자가 회전방향 및 속도를 제어하는 조향핸들(10)과, 상기 조향핸들(10)에 연결되어 조향실린더(20)로 유압유를 공급하는 조향밸브(30)와, 상기 조향실린더(20)와 조향밸브(30) 사이에 위치하도록 연결설치되고, 조향실린더(20)로의 유압유 흐름 방향을 전환시키는 방향전환밸브(40)와, 상기 방향전환밸브(40)를 작동시키고 운전석내에 설치되는 작동스위치(50)를 포함한다. That is, the present invention, the steering wheel 10 for the driver to control the rotation direction and speed, the steering valve 30 is connected to the steering wheel 10 to supply hydraulic oil to the steering cylinder 20, and the steering cylinder It is installed so as to be located between the 20 and the steering valve 30, the direction switching valve 40 for switching the hydraulic oil flow direction to the steering cylinder 20, and operates the direction switching valve 40 installed in the driver's seat It includes an operation switch 50.

상기 조향핸들(10)은 굴삭기의 회전방향 및 속도를 제어하는 것으로, 휠굴삭기 운전석내에 설치되어 있으며, 조향핸들의 회전방향에 따라 굴삭기의 조향방향이 결정된다. The steering wheel 10 controls the rotational direction and speed of the excavator, and is installed in the wheel excavator's driver's seat, and the steering direction of the excavator is determined according to the rotational direction of the steering wheel.

상기 조향밸브(30)는 조향핸들(10)의 작동에 따른 유압유를 조향실린더(20)로 공급하는 것으로, 조향핸들(10) 및 방향전환밸브(40)와 연결된다. The steering valve 30 supplies hydraulic oil according to the operation of the steering wheel 10 to the steering cylinder 20, and is connected to the steering wheel 10 and the direction switching valve 40.

상기 방향전환밸브(40)는 조향밸브(30)로부터 조향실린더(20)로 공급되는 유압유의 공급방향을 변환하는 것으로, 조향밸브(30)와 조향실린더(20) 사이에 위치하도록 설치되며, 작동시 조향밸브(30)에서 조향실린더(20)로 공급되는 유압유의 흐름을 180도 변경시킨다. The direction change valve 40 is to convert the supply direction of the hydraulic oil supplied from the steering valve 30 to the steering cylinder 20, is installed to be located between the steering valve 30 and the steering cylinder 20, the operation When changing the flow of hydraulic oil supplied to the steering cylinder 20 from the steering valve 30 180 degrees.

상기 작동스위치(50)는 방향전환밸브(40)를 작동시키는 것으로, 운전석내에 위치하도록 설치되며, 운전자의 선택에 따라 온/오프되어 방향전환밸브를 구동시킨다. The operation switch 50 is to operate the direction switching valve 40, is installed to be located in the driver's seat, on / off according to the driver's choice to drive the direction switching valve.

상기와 같이 구성된 본 발명을 첨부도면에 의해 상세히 설명하면 다음과 같다. When described in detail by the accompanying drawings of the present invention configured as described above are as follows.

도 3 은 본 발명에 따른 실시예로서, 휠 굴삭기의 상부선회체(운전석)과 하부 구동체가 향하는 방향이 동일한 방향일 경우의 작동상태를 보인 블록예시도를 도시한 것으로, 운전자가 조향핸들을 좌회전(또는 우회전)하게 되면, 휠굴삭기의 바퀴는 좌회전(또는 우회전)하게 되므로, 운전자의 의도와 동일한 방향으로 휠굴삭기가 조향된다. 3 is an embodiment according to the present invention, showing a block diagram showing an operating state when the direction of the upper turning body (driver's seat) and the lower driving body of the wheel excavator in the same direction, the driver turns the steering wheel left (Or the right turn), the wheel of the wheel excavator to the left (or right turn), so that the wheel excavator is steered in the same direction as the driver's intention.

이때, 운전석내에 설치된 작동스위치를 구동시킨 후, 운전자가 조향핸들을 좌회전(또는 우회전)하게 되면, 조향밸브에서 조향실린더로의 유압유의 흐름이 방향전환밸브에 의해 반대방향으로 전환되므로, 휠굴삭기의 바퀴는 우회전(또는 좌회전)하게 되므로, 운전자의 의도와 반대되는 방향으로 휠 굴삭기가 조향된다. At this time, if the driver rotates the steering wheel left (or right) after driving the operation switch installed in the driver's seat, the flow of hydraulic oil from the steering valve to the steering cylinder is switched in the opposite direction by the direction switching valve. Since the wheels turn right (or left), the wheel excavator steers in the opposite direction to the driver's intention.

도 4 는 본 발명에 따른 또다른 실시예로서, 휠 굴삭기의 상부선회체(운전석)과 하부 구동체가 향하는 방향이 서로 반대방향일 경우의 작동상태를 보인 블록 예시도를 도시한 것으로, 운전자가 작동스위치를 구동시킨 후, 조향핸들을 좌회전(또는 우회전)하게 되면, 조향밸브에서 조향실린더로의 유압유의 흐름이 방향전환밸브에 의해 반대방향으로 전환되므로, 휠굴삭기의 바퀴는 상부선회체(운전석)을 기준으로 좌회전(또는 우회전)하게 되므로, 운전자의 의도와 동일한 방향으로 휠굴삭기가 조향된다. 4 is a block diagram showing an operating state when the direction of the upper turning body (driver's seat) and the lower driving body of the wheel excavator in the opposite direction as another embodiment according to the present invention, the driver operating After driving the switch, if the steering wheel is turned left (or right), the flow of hydraulic oil from the steering valve to the steering cylinder is switched in the opposite direction by the direction change valve, so that the wheel of the wheel excavator is the upper swing body (driver's seat). Since the wheel is turned left (or turned right), the wheel excavator is steered in the same direction as the driver's intention.

단, 운전석내에 설치된 작동스위치를 작동시키지 않은 상태에서 운전자가 조향핸들을 좌회전(또는 우회전)하게 되면, 휠굴삭기의 바퀴는 상부선회체(운전석)을 기준으로 우회전(또는 좌회전)하게 되므로, 운전자의 의도와 반대되는 방향으로 휠굴삭기가 조향된다. However, if the driver turns the steering wheel to the left (or to the right) without operating the operation switch installed in the driver's seat, the wheel of the wheel excavator will turn to the right (or to the left) of the upper turning body (driver's seat). The wheel excavator is steered in a direction opposite to the intention.

상기에서와 같이, 굴삭기 상부선회체와 하부구동체가 향하는 방향이 동일한 상태에서 조향밸브에서 조향실린더로 가는 유압유의 흐름방향을 정방향이라고 할 경우, 작동스위치 및 방향전환밸브에 의해 유압유의 흐름이 정방향 또는 역방향으로 변환되므로, 상부선회체(운전석)의 방향에 따라 또한 운전자의 선택에 따라 조향핸들과 휠 굴삭기의 조향방향을 일치시킬 수 있다.As described above, when the flow direction of the hydraulic oil from the steering valve to the steering cylinder in the same direction that the excavator upper swing body and the lower drive body is in the same direction as the forward direction, the flow of the hydraulic oil by the operation switch and the direction switching valve is forward or Since it is converted in the reverse direction, it is possible to match the steering direction of the steering wheel and the wheel excavator according to the direction of the upper swing structure (driver's seat) and the driver's choice.

본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위내에 있게 된다.The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

이와 같이, 본 발명은 운전자가 조향방향을 전환하고자 할 의도가 있을 경우, 방향전환밸브를 이용하여 바퀴의 조향방향을 반대로 작동할 수 있으므로, 운전자가 주행 및 작업을 편리하게 실시할 수 있다.As such, when the driver intends to change the steering direction, the present invention can reversely operate the steering direction of the wheel by using a direction switching valve, so that the driver can conveniently carry out driving and work.

또한, 상부 선회체를 기준으로 운전자의 의도와 동일한 방향으로 굴삭기를 조향할 수 있어, 안전사고를 미연에 방지할 수 있는 등 많은 효과가 있다.In addition, the excavator can be steered in the same direction as the driver's intention on the basis of the upper swing structure, so that a safety accident can be prevented in advance.

Claims (2)

상부 선회체와 하부 구동체를 구비하는 휠 굴삭기에 있어서,In a wheel excavator having an upper pivot and a lower driving body, 운전자에 의해 작동스위치의 작동시키는 단계;Operating the operation switch by a driver; 상기 작동스위치의 작동선택에 따라 방향전환밸브가 작동되어 조향밸브로부터 조향실린더로의 유압유 공급방향을 변환하는 단계;Operating a direction change valve according to an operation selection of the operation switch to change a direction of supply of hydraulic oil from a steering valve to a steering cylinder; 상기 방향전환밸브의 작동 후 조향핸들의 구동시키는 단계;Driving a steering wheel after operation of the directional valve; 상기 조향핸들의 회전작동에 따라 유압유가 방향전환밸브를 통해 조향실린더로 공급되는 단계;Supplying hydraulic oil to a steering cylinder through a direction change valve according to a rotation operation of the steering wheel; 상기 공급되는 유압유의 방향에 따라 조향실린더가 작동되어 조향핸들의 회전방향과 실제 굴삭기의 조향방향을 반대로 구동시키는 단계를 통해, 상부 선회체의 위치에 관계없이 조향 핸들의 조향방향과 굴삭기의 진행방향이 동일하게 되는 것을 특징으로 하는 휠 굴삭기 조향 방향전환 방법.The steering cylinder is operated according to the direction of the supplied hydraulic oil to drive the steering wheel's rotation direction and the actual steering direction of the excavator in reverse, so that the steering direction of the steering wheel and the traveling direction of the excavator are independent of the position of the upper turning body. Wheel excavator steering direction switching method characterized in that the same. 상부 선회체와 하부 구동체를 구비하는 휠 굴삭기에 있어서,In a wheel excavator having an upper pivot and a lower driving body, 상기 휠 굴삭기는 운전자가 회전방향 및 속도를 제어하는 조향핸들과,The wheel excavator is a steering wheel for the driver to control the rotation direction and speed; 상기 조향핸들에 연결되어 조향실린더로 유압유를 공급하는 조향밸브와,A steering valve connected to the steering handle to supply hydraulic oil to a steering cylinder; 상기 조향실린더와 조향밸브 사이에 위치하도록 연결설치되고, 조향실린더로의 유압유 흐름 방향을 전환시키는 방향전환밸브와,A direction switching valve connected to and installed between the steering cylinder and the steering valve, and for switching the hydraulic oil flow direction to the steering cylinder; 상기 방향전환밸브를 작동시키고 운전석내에 설치되는 작동스위치를 포함하는 것을 특징으로 하는 휠 굴삭기 조향 방향전환 장치.Wheel excavator steering direction switching device for operating the directional valve and comprises an operating switch installed in the driver's seat.
KR1020050130190A 2005-12-27 2005-12-27 Wheel excavator steering conversion system KR20070068510A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108545113A (en) * 2018-04-10 2018-09-18 中山市易路美道路养护科技有限公司 GREEB HEDGE MACHINE auto-steering running gear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960014267U (en) * 1994-10-19 1996-05-17 Variable Steering on Wheel Excavators
KR19980045500U (en) * 1996-12-27 1998-09-25 추호석 Excavator steering system
JP2001322556A (en) * 2000-05-12 2001-11-20 Eaton Corp Fluid controller
JP2002347637A (en) * 2001-05-23 2002-12-04 Tcm Corp Driving control system at industrial vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960014267U (en) * 1994-10-19 1996-05-17 Variable Steering on Wheel Excavators
KR19980045500U (en) * 1996-12-27 1998-09-25 추호석 Excavator steering system
JP2001322556A (en) * 2000-05-12 2001-11-20 Eaton Corp Fluid controller
JP2002347637A (en) * 2001-05-23 2002-12-04 Tcm Corp Driving control system at industrial vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108545113A (en) * 2018-04-10 2018-09-18 中山市易路美道路养护科技有限公司 GREEB HEDGE MACHINE auto-steering running gear

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