KR100594856B1 - Join hydraulic system of enabling double controll - Google Patents

Join hydraulic system of enabling double controll Download PDF

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KR100594856B1
KR100594856B1 KR1020050019207A KR20050019207A KR100594856B1 KR 100594856 B1 KR100594856 B1 KR 100594856B1 KR 1020050019207 A KR1020050019207 A KR 1020050019207A KR 20050019207 A KR20050019207 A KR 20050019207A KR 100594856 B1 KR100594856 B1 KR 100594856B1
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hydraulic pump
hydraulic
working device
working
boom
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Korean (ko)
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송영복
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볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K31/00—Housing birds
    • A01K31/22—Poultry runs ; Poultry houses, including auxiliary features, e.g. feeding, watering, demanuring
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K31/00—Housing birds
    • A01K31/06—Cages, e.g. for singing birds
    • A01K31/08—Collapsible cages
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K31/00—Housing birds
    • A01K31/10—Doors; Trap-doors

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  • Environmental Sciences (AREA)
  • Birds (AREA)
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Abstract

작업성을 향상시키기 위하여 붐과 같은 작업장치와 크러셔(crusher)와 같은 옵션장치를 동시에 조작하여 작업하게되는 경우, 복수의 유압펌프 유량을 합류시켜 붐과 옵션장치를 동시에 조작하여 복합작업할 수 있도록 한 것으로,In order to improve the workability, when working with a work device such as a boom and an optional device such as a crusher at the same time, a plurality of hydraulic pumps can be joined to operate the boom and the optional device at the same time so that the work can be combined. In one thing,

본 발명에 의한 복합조작이 가능한 합류시스템은, 엔진에 연결되는 제1,2,3유압펌프와,Joining system capable of a complex operation according to the present invention, the first, second, third hydraulic pump connected to the engine,

제1유압펌프에 병렬로 연결되는 붐, 버킷, 주행모터로 이루어진 제1작업장치와,A first working device comprising a boom, a bucket, and a driving motor connected in parallel to the first hydraulic pump;

제1유압펌프와 제1작업장치사이의 유로에 설치되고, 스플 절환으로 제1작업장치에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브와,A first control valve installed in a flow path between the first hydraulic pump and the first working device and controlling the flow of the hydraulic oil supplied to the first working device by the spool switching;

제2유압펌프에 병렬로 연결되는 스윙, 아암, 주행모터, 옵션장치로 이루어진 제2작업장치와,A second work device comprising a swing, arm, a traveling motor, and an optional device connected in parallel to the second hydraulic pump;

제2유압펌프와 제2작업장치사이의 유로에 설치되고, 스플 절환으로 제2작업장치에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브와,A second control valve installed in a flow path between the second hydraulic pump and the second working device and controlling the flow of the hydraulic oil supplied to the second working device by the spool switching;

제3유압펌프로부터의 파일럿 신호압을 스플에 인가하는 리모트컨트롤밸브와,A remote control valve for applying a pilot signal pressure from the third hydraulic pump to the spool;

제1,2유압펌프의 합류라인에 설치되고, 제1유압펌프로부터의 작동유에 의해 제1작업장치를 구동시키고 동시에 제2유압펌프로부터의 작동유에 의해 제2작업장치를 구동시킬 경우, 제1유압펌프로부터의 작동유 일부를 제2유압펌프의 작동유에 합류시켜 복합 작업할 수 있도록 하는 합류 선택밸브와,When the first working device is driven by the hydraulic oil from the first hydraulic pump and the second working device is driven by the hydraulic oil from the second hydraulic pump, the first and second hydraulic pumps A joining selection valve for joining a part of the hydraulic oil from the hydraulic pump to the hydraulic oil of the second hydraulic pump so as to perform a complex operation;

제1작업장치의 붐과 제2작업장치의 옵션장치를 동시에 구동시켜 복합 작업하는 경우, 제1유압펌프로 부터 토출되어 제2유압펌프 유량에 합류되는 유량을 가변적으로 제어하는 가변 오리피스를 구비한다.When the boom of the first working device and the optional device of the second working device are simultaneously driven and combined work is provided, the variable orifice variably controls the flow rate discharged from the first hydraulic pump and joined to the second hydraulic pump flow rate. .

복합 작업, 옵션장치, 합류시스템 Combined work, optional equipment, joining system

Description

복합조작이 가능한 합류시스템{join hydraulic system of enabling double controll}Join hydraulic system of enabling double controll

도 1은 종래 기술에 의한 유압회로도,1 is a hydraulic circuit diagram according to the prior art,

도 2는 본 발명의 실시예에 의한 복합조작이 가능한 합류시스템의 유압회로도,2 is a hydraulic circuit diagram of a joining system capable of a complex operation according to an embodiment of the present invention;

도 3은 본 발명의 다른 실시예에 의한 복합조작이 가능한 합류시스템의 유압회로도이다.3 is a hydraulic circuit diagram of a joining system capable of a complex operation according to another embodiment of the present invention.

*도면중 주요 부분에 사용된 부호의 설명* Explanation of symbols used in the main part of the drawing

1; 제1유압펌프One; 1st hydraulic pump

2; 제2유압펌프2; 2nd hydraulic pump

3; 제1작업장치3; First work device

4; 제1컨트롤밸브4; 1st control valve

5; 제2작업장치5; 2nd work equipment

6; 제2컨트롤밸브6; Second Control Valve

7; 합류 선택밸브7; Joining selection valve

8; 합류라인8; Joining Line

9; 제3유압펌프9; 3rd hydraulic pump

10; 리모트컨트롤밸브(RCV)10; Remote Control Valve (RCV)

11; 가변 오리피스11; Adjustable orifice

12; 파일럿 선택밸브12; Pilot selector valve

본 발명은 복수개의 유압펌프 유량을 합류시켜 작동 압력이 상이한 작업장치를 동시에 복합 조작할 수 있도록 한 복합조작이 가능한 합류시스템에 관한 것이다.The present invention relates to a joining system capable of a complex operation in which a plurality of hydraulic pump flow rates are joined to enable a complex operation of a work device having a different operating pressure at the same time.

더욱 상세하게는, 작업성을 향상시키기 위하여 붐과 같은 작업장치와 크러셔(crusher)와 같은 옵션장치를 동시에 조작하여 작업하게되는 경우, 복수의 유압펌프 유량을 합류시켜 붐과 옵션장치를 동시에 조작하여 복합작업할 수 있도록 한 복합조작이 가능한 합류시스템에 관한 것이다.More specifically, in order to work by simultaneously operating a work device such as a boom and an optional device such as a crusher in order to improve workability, a plurality of hydraulic pump flow rates are joined to operate the boom and the optional device simultaneously. It is about a joining system that allows a complex operation to allow a complex operation.

도 1에 도시된 바와 같이, 종래 기술에 의한 유압회로도는, 엔진(미도시됨)에 연결되는 제1,2유압펌프(1,2)와, 제1유압펌프(1)에 병렬로 연결되는 제1작업장치(3)(붐, 버킷, 주행모터를 말함)와, 제1유압펌프(1)와 제1작업장치(3)사이의 유 로에 설치되며 스플 절환으로 제1작업장치(3)에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브(4)와, 제2유압펌프(2)에 병렬로 연결되는 제2작업장치(5)(스윙, 아암, 옵션장치(crusher), 주행모터를 말함)와, 제2유압펌프(2)와 제2작업장치(5)사이의 유로에 설치되며 스플 절환으로 제2작업장치(5)에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브(6)를 구비한다.As shown in FIG. 1, the hydraulic circuit diagram according to the related art is connected to the first and second hydraulic pumps 1 and 2 connected to an engine (not shown) and the first hydraulic pump 1 in parallel. The first work device 3 (referred to as boom, bucket and traveling motor) and the flow path between the first hydraulic pump 1 and the first work device 3 and the first work device 3 by the spool switching. The first control valve 4 for controlling the flow of hydraulic oil supplied to the second working device and the second working device 5 (swing, arm, option crusher, traveling motor) connected in parallel to the second hydraulic pump 2 And a second control valve 6 installed in a flow path between the second hydraulic pump 2 and the second working device 5 and controlling the flow of the hydraulic oil supplied to the second working device 5 by the spool switching. It is provided.

도면중 미 설명부호 7은 제1,2유압펌프(1,2) 토출유량을 합류시켜 제1유압펌프(1)로부터 토출되는 작동유에 의해 제1작업장치(3)를 구동시키고, 동시에 제2유압펌프(2)로 부터 토출되는 작동유에 의해 제2작업장치(5)를 구동시켜 복합 작업할 수 있도록 제1,2유압펌프(1,2)의 합류라인(8)에 설치되는 합류 선택밸브이다.In the drawing, reference numeral 7 denotes the first and second hydraulic pumps 1 and 2 combined with the discharge flow rates to drive the first work device 3 with the hydraulic oil discharged from the first hydraulic pump 1, and at the same time the second A joining selector valve installed in the joining line 8 of the first and second hydraulic pumps 1 and 2 so that the second working device 5 may be driven by the hydraulic oil discharged from the hydraulic pump 2 to perform the combined work. to be.

이때, 전술한 합류 선택밸브(7)에 의해 제1,2유압펌프(1,2)의 유량을 합류시킨 상태에서, 제1유압펌프(1)로 부터 토출되는 작동유를 이용하여 제1작업장치(3)를 구동시키고(일예로서, 붐 업 구동을 말함), 제2유압펌프(2)로 부터 토출되는 작동유를 이용하여 제2작업장치(5)를 동시에 구동시켜(일예로서, 옵션장치를 말함) 복합 작업을 하게되는 경우, 붐을 업(up)구동시키는데 필요한 작동압력에 비해 옵션장치를 구동시키는 작동압력이 상대적으로 낮게되므로, 제1유압펌프(1)로 부터 토출되는 작동유가 합류라인(8)을 통하여 옵션장치쪽으로 이동되므로 붐을 제대로 구동시키지 못해 작업성이 떨어지는 문제점을 갖는다.At this time, the first working device using the hydraulic fluid discharged from the first hydraulic pump 1 in a state in which the flow rates of the first and second hydraulic pumps 1 and 2 are joined by the merging selection valve 7 described above. (3) is driven (e.g., boom-up drive), and the second working device 5 is simultaneously driven using hydraulic oil discharged from the second hydraulic pump 2 (e.g., an optional device is When the combined work is performed, the operating pressure for driving the optional device is relatively lower than the operating pressure required for driving the boom, so that the hydraulic oil discharged from the first hydraulic pump 1 is joined to the confluence line. Since it is moved to the option device through (8) there is a problem that the workability is poor because the boom is not properly driven.

본 발명의 목적은, 작동압력이 상이한 붐과 같은 작업장치와 크러셔와 같은 옵션장치를 동시에 조작하여 복합 작업하게되는 경우, 복수의 유압펌프 유량을 합류시켜 붐과 옵션장치를 동시에 조작하여 작업성을 향상시킬 수 있도록 한 복합조작이 가능한 합류시스템을 제공함에 있다.It is an object of the present invention to operate a boom and an optional device at the same time by joining a plurality of hydraulic pump flow rates when operating a work device such as a boom having a different operating pressure and an optional device such as a crusher at the same time. It is to provide a joining system that can be combined to improve.

전술한 본 발명의 목적은, 엔진에 연결되는 제1,2,3유압펌프와,The above object of the present invention, the first, second, third hydraulic pump connected to the engine,

제1유압펌프에 병렬로 연결되는 붐, 버킷, 주행모터로 이루어진 제1작업장치와,A first working device comprising a boom, a bucket, and a driving motor connected in parallel to the first hydraulic pump;

제1유압펌프와 제1작업장치사이의 유로에 설치되고, 스플 절환으로 제1작업장치에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브와,A first control valve installed in a flow path between the first hydraulic pump and the first working device and controlling the flow of the hydraulic oil supplied to the first working device by the spool switching;

제2유압펌프에 병렬로 연결되는 스윙, 아암, 주행모터, 옵션장치로 이루어진 제2작업장치와,A second work device comprising a swing, arm, a traveling motor, and an optional device connected in parallel to the second hydraulic pump;

제2유압펌프와 제2작업장치사이의 유로에 설치되고, 스플 절환으로 제2작업장치에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브와,A second control valve installed in a flow path between the second hydraulic pump and the second working device and controlling the flow of the hydraulic oil supplied to the second working device by the spool switching;

제3유압펌프로부터의 파일럿 신호압을 스플에 인가하는 리모트컨트롤밸브와,A remote control valve for applying a pilot signal pressure from the third hydraulic pump to the spool;

제1,2유압펌프의 합류라인에 설치되고, 제1유압펌프로부터의 작동유에 의해 제1작업장치를 구동시키고 동시에 제2유압펌프로부터의 작동유에 의해 제2작업장치를 구동시킬 경우, 제1유압펌프로부터의 작동유 일부를 제2유압펌프의 작동유에 합류시켜 복합 작업할 수 있도록 하는 합류 선택밸브와,When the first working device is driven by the hydraulic oil from the first hydraulic pump and the second working device is driven by the hydraulic oil from the second hydraulic pump, the first and second hydraulic pumps A joining selection valve for joining a part of the hydraulic oil from the hydraulic pump to the hydraulic oil of the second hydraulic pump so as to perform a complex operation;

제1작업장치의 붐과 제2작업장치의 옵션장치를 동시에 구동시켜 복합 작업하 는 경우, 제1유압펌프로 부터 토출되어 제2유압펌프 유량에 합류되는 유량을 가변적으로 제어하는 가변 오리피스를 구비하는 것을 특징으로 하는 복합조작이 가능한 합류시스템을 제공함에 의해 달성된다.In the case of complex work by simultaneously driving the boom of the first work device and the optional device of the second work device, the variable orifice variably controls the flow rate discharged from the first hydraulic pump and joined to the second hydraulic pump flow rate. It is achieved by providing a joining system capable of a complex operation, characterized in that.

전술한 본 발명의 목적은, 엔진에 연결되는 제1,2,3유압펌프와,The above object of the present invention, the first, second, third hydraulic pump connected to the engine,

제1유압펌프에 병렬로 연결되는 붐, 버킷, 주행모터로 이루어진 제1작업장치와,A first working device comprising a boom, a bucket, and a driving motor connected in parallel to the first hydraulic pump;

제1유압펌프와 제1작업장치사이의 유로에 설치되고, 스플 절환으로 제1작업장치에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브와,A first control valve installed in a flow path between the first hydraulic pump and the first working device and controlling the flow of the hydraulic oil supplied to the first working device by the spool switching;

제2유압펌프에 병렬로 연결되는 스윙, 아암, 주행모터, 옵션장치로 이루어진 제2작업장치와,A second work device comprising a swing, arm, a traveling motor, and an optional device connected in parallel to the second hydraulic pump;

제2유압펌프와 제2작업장치사이의 유로에 설치되고, 스플 절환으로 제2작업장치에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브와,A second control valve installed in a flow path between the second hydraulic pump and the second working device and controlling the flow of the hydraulic oil supplied to the second working device by the spool switching;

제3유압펌프로부터의 파일럿 신호압을 스플에 인가하는 리모트컨트롤밸브와,A remote control valve for applying a pilot signal pressure from the third hydraulic pump to the spool;

제1,2유압펌프의 합류라인에 설치되고, 제1유압펌프로부터의 작동유에 의해 제1작업장치를 구동시키고 동시에 제2유압펌프로부터의 작동유에 의해 제2작업장치를 구동시킬 경우, 제1유압펌프로부터의 작동유 일부를 제2유압펌프의 작동유에 합류시켜 복합 작업할 수 있도록 하는 합류 선택밸브와,When the first working device is driven by the hydraulic oil from the first hydraulic pump and the second working device is driven by the hydraulic oil from the second hydraulic pump, the first and second hydraulic pumps A joining selection valve for joining a part of the hydraulic oil from the hydraulic pump to the hydraulic oil of the second hydraulic pump so as to perform a complex operation;

합류 선택밸브의 파일럿 신호압 입력부에 설치되고, 제1작업장치의 붐 구동신호에 따라 절환되어 합류 선택밸브에 인가되는 파일럿 신호압을 차단시킴에 따라 제1유압펌프로 부터 제2유압펌프로 합류되는 작동유를 차단하는 파일럿 선택밸브를 구비하는 것을 특징으로 하는 복합조작이 가능한 합류시스템을 제공함에 의해 달성된다.It is installed in the pilot signal pressure input part of the joining selector valve and is switched according to the boom driving signal of the first working device to cut off the pilot signal pressure applied to the joining selector valve, thereby joining from the first hydraulic pump to the second hydraulic pump. It is achieved by providing a combined operation capable joining system characterized in that it comprises a pilot selector valve for shutting off the hydraulic fluid.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명하되, 이는 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는 것이다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to describe in detail enough to enable those skilled in the art to easily practice the invention, and therefore It does not mean that the technical spirit and scope of the present invention is limited.

도 2에 도시된 바와 같이, 본 발명의 일실시예에 의한 복합조작이 가능한 합류시스템은, 엔진(미도시됨)에 연결되는 제1,2,3유압펌프(1,2,9)와, 제1유압펌프(1)에 병렬로 연결되는 붐, 버킷, 주행모터로 이루어진 제1작업장치(3)와, 제1유압펌프(1)와 제1작업장치(3)사이의 유로에 설치되고 스플 절환으로 제1작업장치(3)에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브(4)와, 제2유압펌프(2)에 병렬로 연결되는 스윙, 아암, 주행모터, 옵션장치로 이루어진 제2작업장치(5)와, 제2유압펌프(2)와 제2작업장치(5)사이의 유로에 설치되고 스플 절환으로 제2작업장치(5)에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브(6)를 구비한다.As shown in FIG. 2, the combined system capable of combined operation according to an embodiment of the present invention includes: first, second and third hydraulic pumps 1, 2 and 9 connected to an engine (not shown); It is installed in the first working device (3) consisting of a boom, a bucket, a traveling motor connected in parallel to the first hydraulic pump (1), and a flow path between the first hydraulic pump (1) and the first working device (3) It consists of a first control valve (4) for controlling the flow of hydraulic oil supplied to the first working device (3) by a spool switching, a swing, an arm, a traveling motor, and an optional device connected in parallel to the second hydraulic pump (2). The second working device 5 and the second hydraulic pump installed in the flow path between the second hydraulic pump 2 and the second working device 5 and controlling the flow of the hydraulic oil supplied to the second working device 5 by spool switching. A control valve 6 is provided.

또한, 제3유압펌프(9)부터의 파일럿 신호압을 스플에 인가하는 리모트컨트롤밸브(10)(RCV)와, 제1,2유압펌프(1,2)의 합류라인(8)에 설치되고 제1유압펌프(1)로부터의 작동유에 의해 제1작업장치(3)를 구동시키고 동시에 제2유압펌프(2)로부터의 작동유에 의해 제2작업장치(5)를 구동시킬 경우, 제1유압펌프(1)로부터의 작동 유 일부를 제2유압펌프(2)의 작동유에 합류시켜 복합 작업할 수 있도록 하는 합류 선택밸브(7)와, 제1작업장치(3)의 붐과 제2작업장치(5)의 옵션장치를 동시에 구동시켜 복합 작업하는 경우 제1유압펌프(1)로 부터 토출되어 제2유압펌프(2) 유량에 합류되는 유량을 가변적으로 제어하는 가변 오리피스(11)를 구비한다.In addition, the remote control valve 10 (RCV) for applying the pilot signal pressure from the third hydraulic pump 9 to the spool and the confluence line 8 of the first and second hydraulic pumps 1 and 2 are provided. When driving the first work device 3 with the hydraulic oil from the first hydraulic pump 1 and simultaneously driving the second work device 5 with the hydraulic oil from the second hydraulic pump 2, the first hydraulic pressure is applied. A joining selection valve (7) for joining a part of the working oil from the pump (1) with the working oil of the second hydraulic pump (2) to perform a combined work, a boom and a second working device of the first working device (3). In the case of performing a complex operation by simultaneously driving the option device of (5), a variable orifice 11 for controlling the flow rate discharged from the first hydraulic pump 1 and joined to the flow rate of the second hydraulic pump 2 is provided. .

이하에서, 본 발명에 의한 복합조작이 가능한 합류시스템의 사용예를 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings an example of the use of the combined system capable of complex operation according to the present invention will be described in detail.

도 2에 도시된 바와 같이, 운전자에 의해 전술한 리모트컨트롤밸브(10)를 조작함에 따라 제3유압펌프(9)로 부터 토출되는 파일럿 신호압이 합류 선택밸브(7)에 인가되어, 스플을 도면상 하측방향으로 절환시키므로 제1,2유압펌프(1,2)의 합류라인(8)을 연통시킨다.As shown in FIG. 2, the pilot signal pressure discharged from the third hydraulic pump 9 is applied to the confluence selecting valve 7 as the driver operates the above-described remote control valve 10. Since it switches downward in the figure, the confluence lines 8 of the first and second hydraulic pumps 1 and 2 communicate with each other.

따라서, 전술한 제1,2유압펌프(1,2)로부터의 작동유가 합류 선택밸브(7)에 의해 합류되므로, 제1유압펌프(1)로 부터 토출되는 작동유에 의해 제1작업장치(3)를 구동시키고, 이와 동시에 제2유압펌프(2)로 부터 토출되는 작동유에 의해 제2작업장치(5)를 구동시키는 경우, 제1유압펌프(1)로부터의 작동유 일부가 합류 선택밸브(7)를 경유하여 제2작업장치(5)에 보충되므로 제1,2작업장치(3,5)를 동시에 구동시켜 복합 작업을 할 수 있게 된다.Therefore, since the hydraulic oil from the above-mentioned first and second hydraulic pumps 1 and 2 is joined by the merging selection valve 7, the first working device 3 is driven by the hydraulic oil discharged from the first hydraulic pump 1. ) And at the same time to drive the second working device 5 by the hydraulic oil discharged from the second hydraulic pump 2, a part of the hydraulic oil from the first hydraulic pump 1 is joined to the selector valve 7. Since it is replenished to the second working device (5) via) can be combined to drive the first, second working devices (3, 5) at the same time.

전술한 제1작업장치(3)와 제2작업장치(5)의 작동압력이 상이한 경우, 즉 제1작업장치(3)가 붐 업 구동이고 제2작업장치(5)가 붐 업 구동보다 상대적으로 작동압력이 낮은 옵션장치 구동일 경우, 제1유압펌프(1)로 부터 토출되어 붐에 공급되 어야할 작동유가 옵션장치쪽으로 이동하게 된다.In the case where the operating pressures of the first work device 3 and the second work device 5 described above are different, that is, the first work device 3 is boom-up driven and the second work device 5 is relative to the boom-up drive. In the case of operating the optional device with a low operating pressure, the hydraulic fluid to be discharged from the first hydraulic pump 1 and supplied to the boom is moved toward the option device.

이때, 합류라인(8)에 설치된 가변 오리피스(11)에 의해 제1유압펌프(1)로부터의 작동유 일부가 옵션장치쪽으로 이동되는 것을 제어하게 되므로, 제1,2유압펌프(1,2)를 합류시킨 상태에서 제1작업장치(3)와 제2작업장치(5)를 동시에 구동시켜 복합 작업을 할 수 있다.At this time, since the hydraulic fluid from the first hydraulic pump 1 is controlled to move to the option device by the variable orifice 11 installed in the confluence line 8, the first and second hydraulic pumps 1 and 2 are controlled. The combined work can be performed by simultaneously driving the first work device 3 and the second work device 5 in the joined state.

도 3에 도시된 바와 같이, 본 발명의 다른 실시예에 의한 복합조작이 가능한 합류시스템은, 엔진(미도시됨)에 연결되는 제1,2,3유압펌프(1,2,9)와, 제1유압펌프(1)에 병렬로 연결되는 붐, 버킷, 주행모터로 이루어진 제1작업장치(3)와, 제1유압펌프(1)와 제1작업장치(3)사이의 유로에 설치되고 스플 절환으로 제1작업장치(3)에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브(4)와, 제2유압펌프(2)에 병렬로 연결되는 스윙, 아암, 주행모터, 옵션장치로 이루어진 제2작업장치(5)와, 제2유압펌프(2)와 제2작업장치(5)사이의 유로에 설치되고, 스플 절환으로 제2작업장치(5)에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브(6)를 구비한다.As shown in FIG. 3, the combined operation system of the present invention includes a first, second and third hydraulic pumps 1, 2, and 9 connected to an engine (not shown). It is installed in the first working device (3) consisting of a boom, a bucket, a traveling motor connected in parallel to the first hydraulic pump (1), and a flow path between the first hydraulic pump (1) and the first working device (3) It consists of a first control valve (4) for controlling the flow of hydraulic oil supplied to the first working device (3) by a spool switching, a swing, an arm, a traveling motor, and an optional device connected in parallel to the second hydraulic pump (2). An agent for controlling the flow of hydraulic oil which is installed in the flow path between the second working device 5 and the second hydraulic pump 2 and the second working device 5 and is supplied to the second working device 5 by the spool switching. Two control valves 6 are provided.

또한, 제3유압펌프(9)로부터의 파일럿 신호압을 스플에 인가하는 리모트컨트롤밸브(10)(RCV)와, 제1,2유압펌프(1,2)의 합류라인(8)에 설치되고 제1유압펌프(1)로부터의 작동유에 의해 제1작업장치(3)를 구동시키고 동시에 제2유압펌프(2)로부터의 작동유에 의해 제2작업장치(5)를 구동시킬 경우, 제1유압펌프(1)로부터의 작동유 일부를 제2유압펌프(2)의 작동유에 합류시켜 복합 작업할 수 있도록 하는 합류 선택밸브(7)를 구비한다.In addition, the remote control valve 10 (RCV) for applying the pilot signal pressure from the third hydraulic pump 9 to the spool and the confluence line 8 of the first and second hydraulic pumps 1 and 2 are provided. When driving the first work device 3 with the hydraulic oil from the first hydraulic pump 1 and simultaneously driving the second work device 5 with the hydraulic oil from the second hydraulic pump 2, the first hydraulic pressure is applied. A joining selector valve 7 is provided for joining a part of the working oil from the pump 1 to the working oil of the second hydraulic pump 2 so that the combined work can be performed.

또한, 합류 선택밸브(7)의 파일럿 신호압 입력부에 설치되고, 제1작업장치(3)의 붐 상승 구동신호에 따라 절환되어 합류 선택밸브(7)에 인가되는 파일럿 신호압을 차단시킴에 따라 제1유압펌프(1)로 부터 제2유압펌프(2)로 합류되는 작동유를 차단하는 파일럿 선택밸브(12)를 구비한다.In addition, it is installed in the pilot signal pressure input portion of the joining selection valve (7), is switched in accordance with the boom lift drive signal of the first work device 3 to cut off the pilot signal pressure applied to the joining selection valve (7) And a pilot selector valve 12 for shutting off the hydraulic oil joined from the first hydraulic pump 1 to the second hydraulic pump 2.

또한, 파일럿 선택밸브(12)는 붐 상승 구동신호의 고저에 따라 개구면적이 달라 합류 선택밸브(7)에 인가되는 파일럿 신호압도 비례하여 조절되어 합류 선택밸브(7)의 개도가 조정되어 합류되는 유량을 조절할 수 있다.In addition, the pilot selection valve 12 has a different opening area according to the height of the boom up driving signal, and the pilot signal pressure applied to the joining selection valve 7 is also adjusted in proportion to adjust the opening degree of the joining selection valve 7 to be joined. The flow rate can be adjusted.

이하에서, 본 발명의 다른 실시예에 의한 복합조작이 가능한 합류시스템의 사용예를 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings an example of the use of the combined system capable of complex operation according to another embodiment of the present invention will be described in detail.

도 3에 도시된 바와 같이, 전술한 합류라인(8)에 설치된 합류 선택밸브(7)에 의해 제1,2유압펌프(1,2)의 토출유량을 합류시킨 상태에서, 제1유압펌프(1)로 부터 토출되는 작동유에 의해 제1작업장치(3)를 구동시키고(일예로서, 붐 업 구동을 말함), 이와 동시에 제2유압펌프(2)로 부터 토출되는 작동유에 의해 제2작업장치(5)를 구동시켜(일예로서, 옵션장치 구동을 말함) 복합 작업을 하게되는 경우, 제1유압펌프(1)로 부터 토출되어 제1작업장치(3)의 붐에 공급되어야 할 작동유는 제2작업장치(5)의 옵션장치쪽으로 이동하게 된다. 이는 붐을 업시키는 구동보다 옵션장치를 구동시키는 작동압력이 낮기 때문이다.As shown in FIG. 3, in a state in which the discharge flow rates of the first and second hydraulic pumps 1 and 2 are joined by the merging selection valve 7 installed in the merging line 8 described above, the first hydraulic pump ( The first working device 3 is driven by the hydraulic oil discharged from 1) (for example, boom up driving), and at the same time, the second working apparatus is driven by the hydraulic oil discharged from the second hydraulic pump 2. In the case where the combined operation is performed by driving (5) (for example, driving an optional device), the hydraulic oil to be discharged from the first hydraulic pump 1 and supplied to the boom of the first working device 3 is 2 Move to the option device of the work device (5). This is because the operating pressure for driving the option is lower than for driving the boom up.

이때, 제1작업장치(3)의 붐을 업구동시키는 파일럿 신호압이 전술한 파일럿 선택밸브(12)에도 인가되어 스플을 도면상, 우측방향으로 절환시킴에 따라, 합류 선택밸브(7)를 절환시킨 파일럿 신호압이 제거되어 스플이 도면상, 상측방향으로 절환된다(도 3에 도시된 상태임). 이로 인해 제1,2유압펌프(1,2)의 합류라인(8)이 차단된다.At this time, the pilot signal pressure for driving up the boom of the first work device 3 is also applied to the pilot selector valve 12 described above to switch the spool to the right in the drawing, so that the confluence selector valve 7 is opened. The switched pilot signal pressure is removed so that the spool is switched upward in the drawing (state shown in Fig. 3). As a result, the joining line 8 of the first and second hydraulic pumps 1 and 2 is blocked.

따라서, 제1유압펌프(1)로 부터 토출되는 작동유는 제1작업장치(3)의 붐 업 구동에 공급되고, 동시에 제2유압펌프(2)로 부터 토출되는 작동유는 제2작업장치(5)의 옵션장치 구동에 각각 공급되므로, 작동압력이 상이한 제1작업장치(3)의 붐 업 구동과 제2작업장치(5)의 옵션장치를 동시에 구동시키는 복합 작업을 수행할 수 있다.Therefore, the hydraulic oil discharged from the first hydraulic pump 1 is supplied to the boom-up drive of the first working device 3, and the hydraulic oil discharged from the second hydraulic pump 2 is simultaneously transferred to the second working device 5. Since it is supplied to the drive of the option device of the (), it is possible to carry out a combined operation of simultaneously driving the boom-up drive of the first work device 3 and the second work device (5) the operating pressure is different.

이상에서와 같이, 본 발명에 의한 복합조작이 가능한 합류시스템은 아래와 같은 이점을 갖는다.As described above, the joining system capable of a complex operation according to the present invention has the following advantages.

복수의 유압펌프를 이용하여 붐과 같은 작업장치와 크러셔와 같은 옵션장치를 동시에 조작하여 복합 작업하게되는 경우, 복수의 유압펌프 유량을 합류시킴에 따라 붐 업구동과 옵션장치의 복합조작이 가능하여 작업성을 향상시킬 수 있다.If multiple hydraulic pumps are used to operate a work device such as a boom and an optional device such as a crusher at the same time, the combined operation of a plurality of hydraulic pump flow rates enables boom up driving and combined operation of the optional device. Workability can be improved.

Claims (2)

엔진에 연결되는 제1,2,3유압펌프;First, second and third hydraulic pumps connected to the engine; 상기 제1유압펌프에 병렬로 연결되는 붐, 버킷, 주행모터로 이루어진 제1작업장치;A first working device comprising a boom, a bucket, and a driving motor connected in parallel to the first hydraulic pump; 상기 제1유압펌프와 제1작업장치사이의 유로에 설치되고, 스플 절환으로 제1작업장치에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브;A first control valve installed in a flow path between the first hydraulic pump and the first working device and controlling a flow of hydraulic oil supplied to the first working device by a spool switching; 상기 제2유압펌프에 병렬로 연결되는 스윙, 아암, 주행모터, 옵션장치로 이루어진 제2작업장치;A second working device comprising a swing, an arm, a traveling motor, and an optional device connected in parallel to the second hydraulic pump; 상기 제2유압펌프와 제2작업장치사이의 유로에 설치되고, 스플 절환으로 제2작업장치에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브;A second control valve installed in a flow path between the second hydraulic pump and the second working device and controlling a flow of hydraulic oil supplied to the second working device by a spool switching; 상기 제3유압펌프로부터의 파일럿 신호압을 스플에 인가하는 리모트컨트롤밸브;A remote control valve for applying a pilot signal pressure from the third hydraulic pump to the spool; 상기 제1,2유압펌프의 합류라인에 설치되고, 상기 제1유압펌프로부터의 작동유에 의해 제1작업장치를 구동시키고 동시에 제2유압펌프로부터의 작동유에 의해 제2작업장치를 구동시킬 경우, 상기 제1유압펌프로부터의 작동유 일부를 제2유압펌프의 작동유에 합류시켜 복합 작업할 수 있도록 하는 합류 선택밸브; 및When installed in the confluence line of the first and second hydraulic pump, the first working device is driven by the working oil from the first hydraulic pump and at the same time the second working device is driven by the working oil from the second hydraulic pump, A joining selection valve for joining a part of the working oil from the first hydraulic pump to the working oil of the second hydraulic pump to perform a combined operation; And 상기 제1작업장치의 붐과 상기 제2작업장치의 옵션장치를 동시에 구동시켜 복합 작업하는 경우, 상기 제1유압펌프로 부터 토출되어 제2유압펌프 유량에 합류되는 유량을 가변적으로 제어하는 가변 오리피스를 구비하는 것을 특징으로 하는 복합조작이 가능한 합류시스템.In the case where the boom of the first work device and the optional device of the second work device are simultaneously driven and combined work, a variable orifice for variably controlling the flow rate discharged from the first hydraulic pump and joined to the flow rate of the second hydraulic pump Joining system capable of complex operation, characterized in that it comprises a. 엔진에 연결되는 제1,2,3유압펌프;First, second and third hydraulic pumps connected to the engine; 상기 제1유압펌프에 병렬로 연결되는 붐, 버킷, 주행모터로 이루어진 제1작업장치;A first working device comprising a boom, a bucket, and a driving motor connected in parallel to the first hydraulic pump; 상기 제1유압펌프와 제1작업장치사이의 유로에 설치되고, 스플 절환으로 제1작업장치에 공급되는 작동유 흐름을 제어하는 제1컨트롤밸브;A first control valve installed in a flow path between the first hydraulic pump and the first working device and controlling a flow of hydraulic oil supplied to the first working device by a spool switching; 상기 제2유압펌프에 병렬로 연결되는 스윙, 아암, 주행모터, 옵션장치로 이루어진 제2작업장치;A second working device comprising a swing, an arm, a traveling motor, and an optional device connected in parallel to the second hydraulic pump; 상기 제2유압펌프와 제2작업장치사이의 유로에 설치되고, 스플 절환으로 제2작업장치에 공급되는 작동유 흐름을 제어하는 제2컨트롤밸브;A second control valve installed in a flow path between the second hydraulic pump and the second working device and controlling a flow of hydraulic oil supplied to the second working device by a spool switching; 상기 제3유압펌프로부터의 파일럿 신호압을 스플에 인가하는 리모트컨트롤밸브;A remote control valve for applying a pilot signal pressure from the third hydraulic pump to the spool; 상기 제1,2유압펌프의 합류라인에 설치되고, 상기 제1유압펌프로부터의 작동유에 의해 제1작업장치를 구동시키고 동시에 제2유압펌프로부터의 작동유에 의해 제2작업장치를 구동시킬 경우, 상기 제1유압펌프로부터의 작동유 일부를 제2유압펌프의 작동유에 합류시켜 복합 작업할 수 있도록 하는 합류 선택밸브; 및When installed in the confluence line of the first and second hydraulic pump, the first working device is driven by the working oil from the first hydraulic pump and at the same time the second working device is driven by the working oil from the second hydraulic pump, A joining selection valve for joining a part of the working oil from the first hydraulic pump to the working oil of the second hydraulic pump to perform a combined operation; And 상기 합류 선택밸브의 파일럿 신호압 입력부에 설치되고, 제1작업장치의 붐 구동신호에 따라 절환되어 합류 선택밸브에 인가되는 파일럿 신호압을 차단시킴에 따라 제1유압펌프로 부터 제2유압펌프로 합류되는 작동유를 차단하는 파일럿 선택밸브를 구비하는 것을 특징으로 하는 복합조작이 가능한 합류시스템.It is installed in the pilot signal pressure input portion of the confluence selector valve, is switched according to the boom drive signal of the first working device to cut off the pilot signal pressure applied to the confluence selector valve from the first hydraulic pump to the second hydraulic pump. And a pilot selection valve for shutting off the hydraulic fluid to be joined.
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