KR900011146Y1 - Steering device non-deflectable endless tracks - Google Patents

Steering device non-deflectable endless tracks Download PDF

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Publication number
KR900011146Y1
KR900011146Y1 KR2019880004979U KR880004979U KR900011146Y1 KR 900011146 Y1 KR900011146 Y1 KR 900011146Y1 KR 2019880004979 U KR2019880004979 U KR 2019880004979U KR 880004979 U KR880004979 U KR 880004979U KR 900011146 Y1 KR900011146 Y1 KR 900011146Y1
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KR
South Korea
Prior art keywords
steering
bulldozer
oil
valve
steering device
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KR2019880004979U
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Korean (ko)
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KR890020959U (en
Inventor
김동우
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삼성중공업 주식회사
최관식
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Priority to KR2019880004979U priority Critical patent/KR900011146Y1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/08—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using brakes or clutches as main steering-effecting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • 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
    • B60Y2200/25—Track vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/411—Bulldozers, Graders

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Operation Control Of Excavators (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)

Abstract

내용 없음.No content.

Description

무한궤도형 불도우저의 조향장치Steering device of tracked bulldozer

제1도는 본 고안 조향장치의 유압회로도.1 is a hydraulic circuit diagram of the present invention steering device.

제2도는 본 고안 조향장치를 불도우저 운전실에 설치된 개략사시도.Figure 2 is a schematic perspective view of the steering device of the present invention installed in the bulldozer cab.

제3도는 본 고안 방향전환밸브를 작동시켜주기 위한 전기 회로도이다.3 is an electric circuit diagram for operating the present invention the direction switching valve.

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

1 : 오일 탱크 2 : 엔진1: oil tank 2: engine

3 : 조향펌프 4 : 오일필터3: steering pump 4: oil filter

5 : 릴리이프밸브 6 : 압력체크게이지5: Relief Valve 6: Pressure Check Gauge

7 : 주릴리이프밸브 8 : 방향전환밸브7: Main relief valve 8: Directional switching valve

9, 10 : 좌. 우측클러치 11, 12 : 압력게이지9, 10: left. Right clutch 11, 12: Pressure gauge

13 : 조향조절레버 14 : 조향스테이너13: steering lever 12: steering steer

본 고안은 무한궤도형 불도우저의 조향장치에 관한 것으로, 특히 운전석에서 조향용 방향전환밸브를 전기적으로 절환시켜줌으로써 무한궤도형 불도우저의 조향이 이루어지도록 된 무한궤도형 불도우저의 조향장치에 관한 것이다.The present invention relates to a steering apparatus of a caterpillar-type bulldozer, and more particularly, to a steering apparatus of a caterpillar-type bulldozer which is capable of steering a caterpillar-type bulldozer by electrically switching a steering direction switching valve in a driver's seat.

일반적으로 불도우저는 토목 및 건축의 기초공사를 할 때 이용되는 건설기계로서 배토블레이드를 가지고 지면의 평탄작업 또는 흙더미 따위를 옮기는 작업을 하도록된 것인 바. 종래의 무한궤도형 불도우저에 사용되는 조향장치는 조향조절레버가 기계적인 링크를 매개로 조정밸브의 스푸울과 직접 연결된 구조로 되어져 있어서, 손으로 상기 조향조절레버를 당겨 줌으로써 클러치와 연결된 유로에 설치된 방향전환밸브의 수푸울이 좌우로 이동되어져 압력오일의 공급방향을 전환해서 조향이 이루어지도록 되어 있다.In general, the bulldozer is a construction machine used for the foundation work of civil engineering and construction, and is to perform the work of flattening the ground or moving a pile of soil with a batter blade. The steering apparatus used in the conventional caterpillar-type bulldozer has a structure in which a steering control lever is directly connected to the spool of the control valve via a mechanical link, and is installed in the flow path connected to the clutch by pulling the steering control lever by hand. The water spring of the directional valve is moved to the left and right to switch the supply direction of the pressure oil so that steering is performed.

그러나 이와같이 상기 방향전환밸브의 스푸울을 이동시켜주는데 큰 힘이 요구될 뿐만 아니라 좌·우측무한궤도를 주행 또는 계통상태로 조절해 주기 위한 좌측 및 우측 조향조절레버가 각각 따로 설치되어 있어서 사용상 의 불편이 있었다.However, not only a large force is required to move the sprue of the directional valve, but also left and right steering levers for controlling the left and right infinity orbit to the driving or system state are separately installed. There was this.

이에 본 고안은 상기와 같은 불편을 제거하기 위해 안출된 것으로, 조향 펌프로부터 토출된 압유를 공급시켜 주는 공급라인광 오일탱크로 귀환해주는 귀환라인에 양쪽 스푸울이 솔러레노이드로 작동되는 방향전환밸브가 설치되고, 이 방향전환밸브의 각 솔레노이드는 운전석의 조향 조절레버에 의해 전기가 인가되는 릴레이에 의해 작동되도록 전기적으로 연결된 구조로 되어, 상기 조향조절레버를 환시켜줌에 따라 방향전환밸브가 정·역방향중 1쪽으로 절환되어져 좌·우클러치중 1쪽이 무한궤도에서 떨어지게 되어 상기 클러치가 떨어진 쪽의 무한궤도가 축심으로 하여 불도우저가 조향할 수 있도록 된 무한궤도형 붙도우저의 조향장치를 제공함에 그 목적이 있다.Therefore, the present invention is designed to eliminate the inconvenience as described above, both of the sprue on the return line to return to the supply line optical oil tank for supplying the pressure oil discharged from the steering pump to operate the solenoid valve And each solenoid of the directional valve is electrically connected to be operated by a relay to which electricity is applied by the steering wheel of the driver's seat. It is switched to one side in the reverse direction, so that one side of the left and right clutches is separated from the endless track, so that the endless track of the side from which the clutch is dropped is provided as an axial center so that the bulldozer can steer. There is a purpose.

이하 본 고안은 첨부된 예시도면에 의거 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

본 고안 조향장치는 오일탱크(1)에 엔진(2)으로 가동되는 조향펌프(3)가 연결되고, 이 조향펌프(3)에는 오일필터(4)와 릴리이프밸브(5)가 병열로 연결되어져 있다. 그리고 이들 오일필터(4)와 릴리이프밸브(5)는 압력오일의 압력을 체크해주는 압력체크게이지(6)에 연결되면서 이 압력체크게이지(6)에는 압력오일의 압력이 설정치 이상으로 되면 곧바로 오일탱크(1)쪽으로 드레인시켜 주기 위한 주릴리이프밸브(7)와 압축오일의 유동 방향을 전환시켜주는 전기식 방향전환밸브(8)가 병렬로 연결되고, 이 방향전환밸브(8)는 엔진으로부터 전달되는 동력을 단속(斷續)시켜 주는 좌·우측클러치(9, 1)에 각각 연결되어져 있으며, 이들 클러치(9, 10)와 상기 방향전환밸브(8)를 연결시켜주는 각각의 유로(가, 나)에도 압력게이트(11, 12)가 설치되어 있다.The steering device of the present invention is connected to a steering pump (3) which is operated by the engine (2) to the oil tank (1), and the oil filter (4) and the relief valve (5) are connected in parallel with the steering pump (3). It is done. And the oil filter (4) and the relief valve (5) is connected to the pressure check gauge (6) for checking the pressure of the pressure oil, the pressure check gauge (6) as soon as the pressure of the pressure oil is above the set value oil A main relief valve 7 for draining the tank 1 and an electric diverter valve 8 for switching the flow direction of the compressed oil are connected in parallel, and the diverter valve 8 is transferred from the engine. It is connected to the left and right clutches 9 and 1 for intermittent power, and the respective flow paths connecting the clutches 9 and 10 and the directional valve 8 B) Pressure gates 11 and 12 are also provided.

한편, 상기 방향전환밸브(8)는 불도우저의 운전석에 설치되는 조향조절레버(13)와 연결되어져, 이 레버(13)를 가지고 불도우저를 좌·우측방향으로 조향시켜 주도록 되어 있는바, 즉 제3도에 도시된 바와 같이 상기 조향조절레버(13)를 좌측 또는 우측(L, R)으로 절환시켜줌에 따라 좌측 또는 우측의 릴레이(L1, L2)에 전기가 인가되고, 이어 이 릴레이(L1, L2)에 연동하도록 설치된 상기 방향전환밸브(8)의 스푸을 좌우측 슬레노이드(S1, S2)가 동작되도록 배선되어 있다.On the other hand, the direction switching valve (8) is connected to the steering control lever 13 is installed in the driver's seat of the bulldozer, and the lever 13 to steer the bulldozer in the left and right directions, that is, the third As shown in the figure, as the steering control lever 13 is switched to the left or right (L, R), electricity is applied to the left or right relays (L 1 , L 2 ), and then the relay (L). 1 and L 2 are wired so that the left and right sledoids S 1 and S 2 are operated by the sprue of the directional valve 8 installed to interlock with each other.

다음에는 이상과 같이 구성된 본 고안의 작용효과에 대해 설명한다.Next, the effect of the present invention configured as described above will be described.

오일탱크(1)의 오일은 엔진(2)의 동력을 전달받아 작동하는 조향펌프(3)에 의해 펌핑된 다음 오일필터(4)를 거쳐 방향전환밸브(8)의 앞까지 공급되게 되는데, 이때 유로내의 압력이 설정치 이상으로 되면 주릴리이프 밸브(7)를 거쳐 곧바로 오일탱크(1)쪽으로 드레인되어져 회로내의 최고압력을 항상 일정치이하로 유지시켜 주도록 되어 있다.The oil in the oil tank 1 is pumped by a steering pump 3 operated by the power of the engine 2 and then supplied to the front of the direction switching valve 8 through the oil filter 4. When the pressure in the flow path exceeds the set value, it is drained directly to the oil tank 1 via the main relief valve 7 so that the maximum pressure in the circuit is always kept below a certain value.

이러한 상태에서 운전실에 있는 전기식 조향조절레버(13)를 우측(R)으로 작동시켜 주게 되면 우측 릴레이(L1)에 전기가 인가되게 되는 바, 이때 이 릴레이(L1)에 근접 설치된 방향전환밸브(8)의 우측 솔레노이드(S1)가 작동하면서 오른쪽 체임버(RC)가 왼쪽으로 이동되어져 유로를 연결시켜 주게 됨으로써. 상기 방향 전환밸브(8)의 앞까지 공급되어진 압력오일이 유로(가)를 거쳐 우측클러치(10)에 공급되어지면서 클러치피스톤(도시안됨)을 작동시켜 엔진으로 부터 전달되는 동력을 단속시켜 주게 된다.In this state, when the electric steering control lever 13 in the cab is operated to the right (R), electricity is applied to the right relay (L 1 ). At this time, the direction switching valve installed in close proximity to the relay (L 1 ). As the right solenoid S 1 of (8) is operated, the right chamber RC is moved to the left to connect the flow path. The pressure oil supplied to the front of the directional valve 8 is supplied to the right clutch 10 through the flow path to actuate the clutch piston (not shown) to interrupt the power transmitted from the engine. .

이와같이 엔진으로부터 불도우저의 궤도로 전달되는 동력을 우측클러치(10)가 단락시켜 줌에 따라, 우측클러치(10)가 설치된 불도우저의 오른쪽 궤도가 정지되어 회전축심이 되게 되어 불도우저가 이축심을 중심으로 오른쪽으로 조향되게 된다.As the right clutch 10 short-circuits the power transmitted from the engine to the trajectory of the bulldozer, the right trajectory of the bulldozer on which the right clutch 10 is installed is stopped and becomes the center of rotation so that the bulldozer steers to the right around the biaxial center. Will be.

이와는 반대로 조향조절레버(13)를 왼쪽으로 작동시켜 주게되면 이 조향조절레버(13)에 연결되어 있는 좌측 릴레이(L2)에 전기가 인가되게 되는바, 이때 이 릴레이(L2)에 근접 설치된 방향전환밸브(8)의 좌슥 솔레노이드(S2)가 작동하게 되면서 이 솔레노이드(S2)가 설치된 스푸울의 작동에 의해 왼쪽체임버(LC)가 오른쪽으로 이동되게되어 유로를 절환시켜 주게 되므로써, 상기 방향전환밸브(8)의 앞까지 공급되어져 있던 압력오일이 유로(나)를 거쳐 좌측클러치(9)에 공급되어진 클러치피스톤을 작동시켜 엔진으로부터 전달되는 동력을 클러치디스크가 단속시켜 주게 된다.On the contrary, when the steering control lever 13 is operated to the left side, electricity is applied to the left relay L 2 connected to the steering control lever 13, and at this time, the control lever 13 is installed close to the relay L 2 . doemeurosseo dropped to the solenoid (S 2) to the left by the scan puul operating installed chamber (LC) is to be moved to the right, switching the flow path as it is jwaseuk solenoid (S 2) of the directional control valve 8 is activated, the The pressure of the pressure oil supplied to the front of the directional valve 8 actuates the clutch piston supplied to the left clutch 9 via the flow path (B) so that the clutch disc regulates the power transmitted from the engine.

이와같이 엔진으로부터 불도우저의 왼쪽궤도로 전달되는 동력을 좌측클러치(9)가 단락시켜 줌에 따라, 좌측클러치(9)가 설치된 왼쪽궤도가 정지되어 회전축심이 됨으로써 불도우저가 이 축심을 중심으로 왼쪽으로 조향되게 된다.As the left clutch 9 short-circuits the power transmitted from the engine to the left track of the bulldozer, the left track with the left clutch 9 is stopped and becomes a rotary shaft, so that the bulldozer steers to the left about the shaft center. do.

한편, 작업자가 상기 조향조절레버(13)를 중립에 위치해 놓게되면 방향전환밸브(8)도 중립에 위치하게 되는바, 이때, 좌·우측클러치(9, 10)에 작동하고 있던 압축오일이 유로(가)및 유로(나)를 거쳐 각각 오일 탱크(1)로 직접 드레인 되게된다.On the other hand, when the operator puts the steering control lever 13 in the neutral position, the direction switching valve (8) is also located in the neutral, at this time, the compressed oil operating on the left and right clutch (9, 10) flow path The oil is directly drained to the oil tank 1 through the (a) and the flow paths (b).

이상의 설명에서와 같이 본 고안에 따른 불도우저의 조향장치는 방향전환밸브(8)와 연결된 하나의 조향조절레버(13)를 왼쪽·오른쪽으로 조작해 줌으로서 불도우저의 각 궤도를 좌·우측방향으로 조향시켜 줄 수 있게되어, 작업자가 불도우저를 쉽게 조향조작해 줄 수 있는 효과가 있다.As described above, the steering apparatus of the bulldozer according to the present invention steers each track of the bulldozer in the left and right directions by operating one steering control lever 13 connected to the direction switching valve 8 to the left and the right. It can be made, the operator can easily manipulate the bulldozer steering effect.

Claims (1)

오일탱크외 오일을 조향펄프로 가압시켜 무한궤도의 동력을 단속시켜 주는 좌·우클러치에 선택적으로 공급해 줌으로써 조향이 이루어지도록 된 무한궤도형 불도우저의 조향장치에 있어서, 상기 조향펌프(3)와, 좌·우클러치 (9, 10)사이의 유로(가, 나)에 솔레노이드(S1, S2)를 갖춘 전기식 방향전환밸브(8)가 설치되고, 이 방향전환밸브(8)의 솔레노이드(S1, S2)가 운전석의 조향조절레버(13)에 의해 선택 작동되도록 전기적으로 연결된 것을 특징으로 하는 무한궤도형 불도우저의 조향장치.In the steering apparatus of a crawler type bulldozer, in which a steering is performed by selectively supplying oil other than an oil tank to a left / right clutch which presses a steering pulp to control the power of an endless track, wherein the steering pump (3), An electric directional valve 8 having solenoids S 1 and S 2 is installed in the flow path between the left and right clutches 9 and 10, and the solenoid S of the directional valve 8 is provided. 1 , S 2 ) is a steering device of the caterpillar-type bulldozer, characterized in that it is electrically connected to operate selectively by the steering control lever (13) of the driver's seat.
KR2019880004979U 1988-04-07 1988-04-07 Steering device non-deflectable endless tracks KR900011146Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019880004979U KR900011146Y1 (en) 1988-04-07 1988-04-07 Steering device non-deflectable endless tracks

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Application Number Priority Date Filing Date Title
KR2019880004979U KR900011146Y1 (en) 1988-04-07 1988-04-07 Steering device non-deflectable endless tracks

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KR890020959U KR890020959U (en) 1989-11-01
KR900011146Y1 true KR900011146Y1 (en) 1990-12-20

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