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KR890003364Y1 - Two step oil pressure device for running a construction vehicle - Google Patents

Two step oil pressure device for running a construction vehicle Download PDF

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Publication number
KR890003364Y1
KR890003364Y1 KR2019860022248U KR860022248U KR890003364Y1 KR 890003364 Y1 KR890003364 Y1 KR 890003364Y1 KR 2019860022248 U KR2019860022248 U KR 2019860022248U KR 860022248 U KR860022248 U KR 860022248U KR 890003364 Y1 KR890003364 Y1 KR 890003364Y1
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KR
South Korea
Prior art keywords
lever
stage
flow rate
pump
driving
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KR2019860022248U
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Korean (ko)
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KR880011984U (en
Inventor
조종문
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대우중공업주식회사
이경훈
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Priority to KR2019860022248U priority Critical patent/KR890003364Y1/en
Publication of KR880011984U publication Critical patent/KR880011984U/en
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Publication of KR890003364Y1 publication Critical patent/KR890003364Y1/en

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    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
    • F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
    • 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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4035—Control of circuit flow

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

내용 없음.No content.

Description

건설차량의 주행2단 유압장치Two-stage hydraulic system for construction vehicles

제1도는 본 고안의 유압 회로도.1 is a hydraulic circuit diagram of the present invention.

제2도는 종래의 유압 회로도.2 is a conventional hydraulic circuit diagram.

제3도는 전진 2단으로 레버를 조작하였을 때 유량의 크기를 나타낸 회로도.3 is a circuit diagram showing the magnitude of the flow rate when the lever is operated in two forward steps.

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

V1,V2: 밸브 L1,L2,L3,L4, : 레버V 1 , V 2 : Valve L 1 , L 2 , L 3 , L 4 ,: Lever

F : 전진 S : 정지F: Forward S: Stop

B : 후진 Q,q : 유량B: Reverse Q, q: Flow

본 고안은 건설 장비의 차량에서 주행을 2단으로 제어하는 유압장치에 관한 것이며 특히 좌·우로 회전할 때 2단으로 제어할 수 있도록 한 것이다.The present invention relates to a hydraulic system for controlling driving in two stages in a vehicle of construction equipment, and in particular, to control in two stages when rotating left and right.

좀더 구체적으로는, 차량이 좌측 혹은 우측으로 회전할 때에는 바퀴가 구동하게 되는데 이때 바퀴에 동력을 전달하기 위하여 주행모터로 유입되는 압유량을 제어하려는 것으로서, 그 제어방법은 유체의 역학 관계인 속도와 유량의 비례 관계 즉 V=에서 압유량(Q)을 증가시키면 압유의 속도(V)가 비례적으로 증가한다는 사실을 응용하여 주행모터를 더욱 빨리 구동시켜 2단 속도가 이루어지도록 유압라인을 개량한 것이다.More specifically, when the vehicle rotates to the left or right, the wheels are driven, and this is to control the amount of pressure oil flowing into the traveling motor to transmit power to the wheels. Proportional relationship of V = By increasing the oil pressure (Q) in the application of the fact that the speed of the oil pressure (V) increases proportionally to drive the driving motor faster to improve the hydraulic line to achieve a two-stage speed.

건설 장비의 가장 일반적인 속도제어 방법을 살펴보면, 전·후진 주행시에는 1단 및 2단으로 속도를 제어할 수 있고, 좌·우로 회전하여 커브 주행을 하고자 할 때는 1단만이 가능하며 2단 제어장치는 전무한 상황이다.Looking at the most common speed control method of construction equipment, it is possible to control the speed in the first and second stages when driving forward and backward, and only the first stage is possible when turning to the left and right to run the curve. There is no situation.

왜냐하면, 건설장비 차량이라는 것은 화물의 운송을 목적으로 하지 않고 일정한 작업공간에서 활동영역을 갖고 빈번하게 이동 작업을 하므로 주행속도를 급속으로 제어 하는데에는 그다지 필요성을 느끼지 못했기 때문이다.This is because the construction equipment vehicle does not have the purpose of transporting cargo, but moves frequently with a certain working area in a certain work space, so it has not felt much necessity for controlling the driving speed rapidly.

이러한 작업의 특수성을 고려하여볼 때 이동작업중에서 특히 좌·우회전 주행 속도를 기존의 전·후진 2단 속도를 제어하는 유압라인을 십분 이용하여 좌·우회전 주행도 2단으로 제어하여 작업시간의 단축, 차량의 기동성 증대를 꾀해보려는 것이다.In consideration of the specificity of this work, the working time is shortened by controlling the left and right turning speed to two stages by using the hydraulic line that controls the existing forward and backward two speeds, especially during the moving operation. The aim is to increase the mobility of the vehicle.

본 고안의 확실한 이해를 돕기 위해 먼저 종래의 주행 유압 장치를 살펴보면, 제2도에 도시한 유압라인 구성은 차량의 정지(S) 상태를 나타낸 것으로서, 이는 펌프(P1)(P2)에서 토출되는 압유가 주행모터(M1),(M2)로 유입되는 유로가 차단되었기 때문이다.Looking at the conventional traveling hydraulic device in order to give a clear understanding of the present invention, the hydraulic line configuration shown in Figure 2 shows the state of the vehicle (S), which is discharged from the pump (P 1 ) (P 2 ) This is because the oil pressure that flows into the traveling motor M 1 and M 2 is blocked.

레버(L1)(L2)(L3)는 수동식으로 주행 속도를 제어하기 위한 조작 순서는 우선1단(SP1) 및 2단(SP2)으로 조작되는 레버(L1)을 원하는 단수로 선택한 후, 레버(L2)와 (L3)을 조작하는데 있어서 전진(F) 주행2단(SP2)으로 속도를 내고자 할 때에는 (F)와 (SP2)로 레버(L2)(L3)를 조작하면 유로가 설정된다.Lever (L 1 ) (L 2 ) (L 3 ) is a manual operation to control the traveling speed is the first stage (SP 1 ) and the second stage (SP 2 ) to operate the lever (L 1 ) to the desired number of stages after selecting, the lever (L 2) and according to the operation of (L 3) forward (F) running bunk when naegoja the speed (SP 2) (F) and the lever (SP 2) (L 2) (L 3 ), the flow path is set.

먼저 밝혀두었듯이 Q=의 관계에서 상기의 2단(SP2)은 주행모터(M1)(M2) 흐르고 있는 압유량이 증가했기 때문이다.As I mentioned first, Q = This is because the hydraulic pressure flowing in the traveling motor M 1 (M 2 ) is increased in the second stage SP 2 .

즉, 제2도에 유량(Q)의 크기를 도시한 것은 2단(SP2) 조작으로 주행모터(M1)(M2)로 유입되는 유량(Q)의 대소 관계를 나타낸 것으로서, 위 사실이 더욱 자명해 진다.That is, the magnitude of the flow rate Q in FIG. 2 shows the magnitude relationship between the flow rate Q flowing into the traveling motor M 1 and M 2 by two-stage SP 2 operation. This becomes more obvious.

참고로 전진(F) 1단(SP1)은, 레버(L1)를 1단(SP1) 조작하여 유로가 설정되는데 여기서 펌프(P1)(P2)에서 송출되는 유량의 크기를 Q로 정하면 주행모터(M1)(M2)로 각각 흐르는 유량은 Q만큼 되어 2단(SP2)주행보다 유량이 작아지기 때문에 속도가 떨어지게 되는 것이다.For reference, forward 1 (F) 1 stage (SP 1 ), the flow path is set by operating the lever (L 1 ) 1 stage (SP 1 ), where the size of the flow rate sent from the pump (P 1 ) (P 2 ) Q In this case, the flow rate of each of the traveling motors (M 1 ) (M 2 ) is equal to Q, and the flow rate decreases since the flow rate is smaller than that of the two-stage (SP2) driving.

다음은 본 고안을 착안하게 한 요인으로서 종래의 우회전, 커브 주행시를 일례로 설명한다.The following describes the conventional right-turn and curve driving as an example as a factor of the present invention.

제2도에서 레버(L1)를 1단(SP1)으로 선택한 후 제러(L2)를 전진(F)으로 조작하고 레버(L2)를 정지(S) 상태로 하면 펌프(P2)의 송출 압유는 차단 되면서 펌프(P1)에서 Q만큼 송출되는 압유는 1단(SP1)의 유로를 따라서 주행모타(M1)를 거쳐 Q만큼의 유량이 탱크(T)로 귀환하게 되며 1단 속도로 주행하게 되는데 이는 좌회전 커브 주행에서도 펌프(P1)의 송출 압유가 차단되므로 마찬가지로 2단 제어가 되지 않는다.2 also in the lever (L 1) a first stage (SP 1) as if the operation in the forward (F) a Jeremiah (L 2) to select the lever (L 2) to the stop (S), the pump (P 2) When the pressure oil is discharged, the pressure oil discharged by Q from the pump P 1 flows through the driving motor M 1 along the flow path of the first stage SP 1 to the tank T. It is traveling at a short speed, which is not controlled in two stages because the pumped pressure oil of the pump P 1 is blocked even in a left turn curve driving.

이상과 같이 종래의 주행속도 제어중 3방법을 살펴본 것과 제2도에 나타난 바와 같이 좌·우 회전 2단 속도 주행은 불가능하게 되어 있다.As described above, the three methods of the conventional traveling speed control have been described, and as shown in FIG.

이 고안에서는 좌·우회전을 2단 속도로 제어 하려는데 목적이 있으며, 이와 같은 목적달성의 특징은 선택 회전 주행을 할 때에 펌프(P1)(P2)의 유량이 일측의 주행모터(M1혹은 M2)로만 유입될 수 있도록 밸브를 설치함으로서 달성될 수 있게 된다.In this design, the purpose is to control the left and right rotations at two speeds. The purpose of this purpose is to achieve the purpose of the selective rotational driving, and the flow rate of the pump (P 1 ) (P 2 ) is the driving motor (M 1 or This can be achieved by installing a valve so that it can only flow into M 2 ).

본 고안의 구성 및 작용효과를 설명하면, 제1도에 도시된 바와 같이, 레버(L1)(L2)의 주행 선택 즉 전진(F), 정지(S), 후진(B)의 3위치에 따라서 주행 방향이 바뀌는 양 방향의 주행모터(M1)(M2) 입출구 타인에는 1단(SP1) 및 2단(SP2)으로 유로가 연결 되도록 레버(L1)을 설치하고, 상기 레버(L2)(L3)의 작동과 함께 유로가 연결 및 차단되도록 밸브(V1)(V2)의 유로를 서로 접속하여 설치함에 있어서 밸브(V1)는 펌프(P1)에 연결시키며 또한 레버(L1)와 함께 작동하면서 펌프(P2)의 압유를 연결 및 차단시키는 레버(L4)와 접속된 밸브(V2)로 구성한 것이다.Referring to the configuration and effect of the present invention, as shown in Figure 1, the selection of the driving of the lever (L 1 ) (L 2 ), that is, three positions of the forward (F), stop (S), backward (B) The lever L 1 is installed at both ends of the traveling motor M 1 and M 2 in the traveling direction in which the traveling direction is changed according to the first and second passages SP 1 and SP 2 . the lever (L 2) in as (L 3) so that the flow passage is connected and a block with a moving valve (V 1) (V 2) connected to each other to install the flow passage of the valve (V 1) is connected to a pump (P 1) It also consists of a valve (V 2 ) connected to the lever (L 4 ) for connecting and blocking the pressure oil of the pump (P 2 ) while working with the lever (L 1 ).

이상과 같이 본 고안자가 해결하고자 하는 좌·우 회전의 2단 속도중 전진주행때를 작용 효과로 설명하면 다음과 같다.As described above, the present inventors describe the forward driving time of the two speeds of the left and right rotations to be solved as follows.

우선 차량의 우회전 전진 주행은 레버(L1)를 2단(SP2)으로 조작할 때 동시에 작동하는 레버(L4)의 유로(1)가 설정되어 열리면서 펌프(P2)의 송출 유량 q가 레버(L3)가 정지(S) 상태이기 때문에 밸브(V2)→밸브(V1)를 거쳐 펌프(P1)에서 송출하는 유량 q과 함유하는데 있어서는, 우회전 전진 주행이므로 레버(L2)를 전진(F)으로 조작하면 동시에 작동하는 밸브(V1)의 유로(3')가 열리기 때문에 증가된 유량2q는 주행모터(M1)를 구동시킴으로서 2단 속도가 되는 것이다.First of all, when the lever L 1 is operated in two stages (SP 2 ), the flow rate q of the pump P 2 is increased while the flow path 1 of the lever L 4 is operated. Since the lever L 3 is in the stop (S) state, the flow rate q sent from the pump P 1 through the valve V 2 to the valve V 1 is included, and the lever L 2 is a forward rotation forward driving. Since the flow path 3 'of the valve V 1 which is operated at the same time is opened by operating F forward, the increased flow rate 2q becomes two speed by driving the traveling motor M 1 .

이때 2q의 유량은 주행모터(M2)로 다시 유입하게 되는데 레버(L3)가 정지(S) 상태이기 때문에 2q의 유량은 단순히 주행모타(M2)만을 구동시킬 뿐이고 우륜(미도시)에는 동력 전달이 없는 것이다.At this time, the flow rate of 2q flows back into the driving motor M 2 , but since the lever L 3 is stopped (S), the flow rate of 2q merely drives the driving motor M 2 and the right wheel (not shown). There is no power transmission.

상기의 2단 속도에서 유량의 크기를 보았듯이 1단 속도에서 유량의 크기를 비교하여 보면 작용효과는 더욱 자명하게 이해되는 것이다.As seen from the magnitude of the flow rate at the second stage speed, the effect is more clearly understood when comparing the magnitude of the flow rate at the first stage speed.

차량의 우회전 전진주행에서 1단 속도는, 레버(L1)을 1단(SP1)으로 조작할 때 동시에 작동하는 레버(L4)의 유로(2)는 펌프(P2)의 송출 유량 q를 차단하게 된다.The first-stage rate in turn forward travel of the vehicle, the transmission flow rate of the flow passage (2), the pump (P 2) of the lever (L 4) to operate at the same time to operate the lever (L 1) a first stage (SP 1), q Will block.

이때 (L3)와 동시 작동되는 밸브(V2)의 유로(2")로 열려 있지만 유로(2)의 차단으로 밸브(V1)을 거쳐 펌프(P1)에서 송출되는 유량 q와 함유가 없기 때문에 주행모터(M1)를 구동하는 유량은 q뿐으로 1단 속도가 되는 것이다.At this time, it is open to the flow path 2 "of the valve V 2 simultaneously operated with (L 3 ), but the flow rate q and content sent out from the pump P 1 through the valve V 1 by the blocking of the flow path 2 are Since there is no flow rate, the flow rate for driving the traveling motor M 1 becomes only one speed as q.

참고로, 차량의 전진 주행 2단 속도는, 레버(L1)을 2단(SP2)로 조작할 때 동시에 작동하는 레버(L4)의 유로(1)가 열리지만 레버(L2)(L3) 전진(F)조작하면 레버(L3)와 함께 작동하는 밸브(V2)의 유로가 차단되므로 밸브(V1)를 거쳐 펌프(P1)로 함유하는 유량 q=0가 된다.For reference, the forward travel of the vehicle a two-stage speed, a flow path (1) of the lever (L 4) to operate at the same time to operate the lever (L 1) to the second stage (SP 2), only opening lever (L 2) ( L 3 ) Since the forward (F) operation interrupts the flow path of the valve (V 2 ) which works together with the lever (L 3 ), the flow rate q = 0 contained in the pump (P 1 ) via the valve (V 1 ) becomes.

이러한 상태에서 각 펌프 (P1),(P2)에서 송출되는 유량 q가 2단(SP2)라인을 거쳐 주행모터(M1)(M2)로 유입되는 유량의 크기는 제2도와 같이 2g를 유지함으로 2단 속도로 차량이 주행하게 된다.In this state, the flow rate q sent from each of the pumps P 1 and P 2 flows into the traveling motor M 1 M 2 through the two-stage SP 2 line as shown in FIG. By holding 2g, the vehicle will run at two speeds.

이상에서 몇가지 주행속도를 알아본 바와 같이, 모든 유압 장치가 유량과 속도는 비례관계가 있다는 기본적인 사실을 응용한 본 고안은 특수 작업됨으로서 작업시간의 단축은 물론, 특히 차량의 기동성을 갖게 하는 효과가 있는 것이다.As the several driving speeds have been discussed above, the present invention, which applies the basic fact that all hydraulic systems have a proportional relationship with the flow rate, has a special work, which shortens the working time and in particular makes the vehicle maneuverable. It is.

Claims (1)

도시된 바와 같이, 레버(L2)(L3)의 주행 선택 즉 전진(F), 정지(S), 후진(B)의 3위치에 따라서 주행 방향이 바뀌는 양 방향의 주행모터(M1)(M2) 입출구 라인에는 1단(SP1) 및 2단(SP2)으로 유로가 연결되도록 레버(L1)을 설치하고, 상기 레버(L2)(L3)의 작동과 함께 유로가 연결 및 차단되도록 밸브(V1)(V2)의 유로를 서로 접촉하여 설치함에 있어서 밸브(V1)는 펌프(P1)에 연결시키며 또한 레버(L1)와 함께 작동하면서 펌프(P2)의 압유를 연결 및 차단시키는 레버(L4)와 접속된 밸브(V2)로 구성한 것을 특징으로 하는 건설차량의 주행2단 유압 장치., The lever (L 2) (L 3) traveling select i.e. forward (F), stop (S), backward (B) two-way travel motor for changing the running direction according to the 3-position of the, as shown (M 1) (M 2 ) A lever L 1 is installed at the inlet and outlet lines so that the flow path is connected to the first stage SP 1 and the second stage SP 2 , and the passage is operated with the operation of the lever L 2 (L 3 ). In installing the flow paths of the valves V 1 and V 2 in contact with each other so as to be connected and disconnected, the valves V 1 are connected to the pump P 1 and are operated together with the lever L 1 while the pump P 2 And a valve (V 2 ) connected to the lever (L 4 ) to connect and shut off the hydraulic oil of the vehicle.
KR2019860022248U 1986-12-31 1986-12-31 Two step oil pressure device for running a construction vehicle KR890003364Y1 (en)

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Application Number Priority Date Filing Date Title
KR2019860022248U KR890003364Y1 (en) 1986-12-31 1986-12-31 Two step oil pressure device for running a construction vehicle

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Application Number Priority Date Filing Date Title
KR2019860022248U KR890003364Y1 (en) 1986-12-31 1986-12-31 Two step oil pressure device for running a construction vehicle

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KR880011984U KR880011984U (en) 1988-08-26
KR890003364Y1 true KR890003364Y1 (en) 1989-05-20

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