KR950012486B1 - Automatic truck for welding - Google Patents

Automatic truck for welding Download PDF

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Publication number
KR950012486B1
KR950012486B1 KR1019910024245A KR910024245A KR950012486B1 KR 950012486 B1 KR950012486 B1 KR 950012486B1 KR 1019910024245 A KR1019910024245 A KR 1019910024245A KR 910024245 A KR910024245 A KR 910024245A KR 950012486 B1 KR950012486 B1 KR 950012486B1
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KR
South Korea
Prior art keywords
frame
unmanned
welding
workpiece
hydraulic cylinder
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KR1019910024245A
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Korean (ko)
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KR930012504A (en
Inventor
김태주
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삼성중공업주식회사
김연수
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Priority to KR1019910024245A priority Critical patent/KR950012486B1/en
Publication of KR930012504A publication Critical patent/KR930012504A/en
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Publication of KR950012486B1 publication Critical patent/KR950012486B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02Carriages for supporting the welding or cutting element
    • B23K37/0294Transport carriages or vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/02Carriages for supporting the welding or cutting element
    • B23K37/0247Driving means

Abstract

The automated guided vehicle(AGV) for use in automatic welding system for heavy workpieces such as the lower side frame of the excavator, comprises a driving means mounted on the frame for driving the AGV on the rail; a table lifted by the hydraulic cylinder installed at the both sides of the frame and mounted on the X-type linkage; a centering device mounted on the table for centering or positioning the welding workpiece; a control box for controlling the respective units.

Description

무인 반송 대차Unmanned return truck

제1도는 본 발명에 따른 무인반송대차의 정면도.1 is a front view of the unmanned transfer truck according to the present invention.

제2도는 본 발명에 따른 무인반송대차의 평면도.2 is a plan view of the unmanned transfer truck according to the present invention.

제3도는 무인반송대차에서 테이블의 리프팅을 도시하는 측면도.3 is a side view showing the lifting of a table in an unmanned conveyance bogie.

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

1 : 무인반송대차 2 : 테이블1: unmanned transfer truck 2: table

3 : 센터링 디바이스 3-1 : 반출용 리프트3: centering device 3-1: lift for carrying out

3-2 : 반입용 리프트 10 : 구동모터3-2: Lift for carrying in 10: Drive motor

10-1 : 구동피니언 14 : 제어박스10-1: Drive Pinion 14: Control Box

본 발명은 용접자동시스템 등과 같이 물류이송시 요구되는 곳에 사용될 수 있는 무인반송대차에 관한 것이다.The present invention relates to an unmanned conveyance truck that can be used where required for logistics transport, such as automatic welding system.

일반적으로 중형굴삭기 하부사이드프레임과 같은 중량체의 공작물을 자동용접하기 위한 용접자동시스템은 공작물 반입과 반출을 위해 이송장치가 필요로 하게 되는데, 이러한 장치는 주로 레일상에 설치된 무인반송대차가 이용된다.In general, a welding automatic system for automatically welding a heavy workpiece, such as a lower side frame of a medium excavator, requires a conveying device for loading and unloading a workpiece. Such a device is mainly used with an unmanned conveyance truck mounted on a rail. .

그러나, 종래의 무인반송대차는 한 개의 리프터가 설치되어 있기 때문에 하나의 리프터에 시간차이를 두고 반입작업과 반출작업을 별개로 수행할 수 밖에 없었다. 그 결과 반입과 반출에 따른 시간이 많이 소요되고, 반입과 반출과정이 동시에 수행될 수 없기 때문에 대기 시간이 많아지며, 전체 공정상의 균형이 맞지않아 생산성이 저하되는 문제점이 있었다.However, in the conventional unmanned transfer truck, because one lifter is installed, the import and export operations have to be performed separately with a time difference on one lifter. As a result, it takes a lot of time according to the import and export, because the import and export process can not be performed at the same time, the waiting time increases, there is a problem that the productivity is lowered because the overall process is not balanced.

본 발명은 상기한 종래의 문제점을 해결하기 위해서 안출된 것으로서, 한 대의 무인반송대차상에 반입용 리프터와 반출용 리프터를 장착함으로써 공작물의 반입과 반출을 1회의 이송작업으로 수행할 수 있는 무인반송대차를 제공함에 있다.The present invention has been made in order to solve the above-mentioned problems, unmanned conveyance that can carry out the carry-in and take-out of the workpiece in one transfer operation by mounting a lifter for carrying in and a lifter for carrying out on a single unmanned transfer truck In providing a loan.

전술한 목적을 달성하기 위한 본 발명의 특징은, 중형 굴삭기의 하부사이드 프레임과 같은 중량체의 공작물을 자동 용접하는 용접자동시스템에 이용되는 무인반송대차에 있어서, 프레임에 설치되어 구동시 레일위의 무인반송대차를 주행시키는 구동수단과, 상기 프레임 양측에 설치되는 유압실린더 및 상기 유압실린더 양측에 병렬로 설치되어 절첩되는 ×자형의 링크장치 상측에 장착되어 상기 유압실린더 구동시 리프팅되는 테이블과, 상기 테이블상에 설치되어 로딩되는 공작물의 센터링 및 위치고정을 하는 센터링 디바이스와, 상기 각 프레임에 설치되어 각 단위 장치들을 제어하는 콘트롤 박스를 구비함을 특징으로 하는 무인반송대차에 있다.A feature of the present invention for achieving the above object is in an unmanned transfer truck used in an automatic welding system for automatically welding a workpiece of a heavy body such as a lower side frame of a medium excavator, the frame being mounted on the rail and driven on the rail. A driving means for driving the unmanned transport truck, a hydraulic cylinder installed at both sides of the frame, and a table mounted at an upper side of the X-shaped link device which is installed in parallel on both sides of the hydraulic cylinder and folded to lift the hydraulic cylinder when driving the hydraulic cylinder; And a centering device for centering and fixing a work piece installed and loaded on a table, and a control box installed on each frame to control each unit device.

이하, 첨부도면에 의거 본 발명에 따른 무인반송대차의 바람직한 일 실시예를 상세히 설명한다.Hereinafter, a preferred embodiment of the unmanned transfer truck according to the present invention based on the accompanying drawings will be described in detail.

제1도는 본 발명에 따른 무인반송대차의 정면도이고, 제2도는 평면도이며, 제3도는 테이블의 리프팅을 도시하는 측면도이다. 제1도 내지 제3도를 참조하면, 참조번호(1)은 무인반송대차를 가르킨다. 이 무인반송대차(1)의 상부에는 테이블(2)이 설치되고, 테이블(2)의 상부에는 공작물의 크기 및 공작물의 형태에 따라 무게중심이 다른 상태에서 공작물을 이동시킬 경우 밀리는 현상 및 적당한 위치결정을 보정하지 못하는 문제점을 제거시킴과 동시에 재위치결정을 할 수 있는 센터링 및 위치고정을 갖는 센터링 디바이스(3)가 설치된다. 이 센터링 디바이스(3)가 설치되어 있고 테이블(2) 하부에는 제1도 및 제3도에 보여주고 있는 바와 같이 링크장치(4)가 장착되어 있다.1 is a front view of an unmanned transport truck according to the present invention, FIG. 2 is a plan view, and FIG. 3 is a side view showing the lifting of the table. 1 to 3, reference numeral 1 denotes an unmanned transfer truck. The table 2 is installed at the upper part of the unmanned conveyance trolley 1, and the upper part of the table 2 is pushed when the workpiece is moved in a state where the center of gravity is different depending on the size of the workpiece and the shape of the workpiece, and a suitable position. A centering device 3 with centering and positioning capable of repositioning while eliminating the problem of failing to correct the crystal is provided. The centering device 3 is provided, and a linkage device 4 is attached to the lower part of the table 2 as shown in FIGS. 1 and 3.

이 링크장치(나)는 후술되는 실린더에 의해 접혀지거나 펴지는 "×"모양의 다리가 좌우 전후로 배열된 "더블 ×자"형으로 설치되어 있다. 따라서 공작물의 무게중심 변동에 대응 및 내구성을 충족시키며, 리프팅 스토로크를 종래보다 확대할 수 있도록 되어 있으며, 공작물 무게가 한쪽으로 편중되었을 때 좌우 전후로 안정되게 유지할 수 있게 된다.This linkage device (b) is provided in a "double x-shaped" shape in which "x" shaped legs which are folded or extended by a cylinder to be described later are arranged left and right. Therefore, it meets the change in the center of gravity of the workpiece and satisfies the durability, it is possible to expand the lifting stroke than before, and when the workpiece weight is biased to one side, it is possible to keep stable from side to side.

링크장치(4)의 하부에는 프레임(5)이 설치되고 프레임(5)의 안쪽에는 실린더(6)가 설치되어 있으며, 실린더(6)의 상부에는 피스톤(7)이 돌출되어 테이블(2)에 밀착 고정되어 있다. 따라서, 테이블(2)과 연결고정된 링크장치(4)가 피스톤(7)의 상하운동과 연동된다.The frame 5 is installed at the lower part of the link device 4, the cylinder 6 is installed at the inside of the frame 5, and the piston 7 is protruded at the upper part of the cylinder 6 to the table 2. Tightly fixed. Therefore, the link device 4 fixed to the table 2 is interlocked with the vertical movement of the piston 7.

한편, 본 실시예의 무인반송대차(1)에는 그 하부에 구동모터(10)가 장착되어 있고, 이 구동모터(10)에는 무인반송대차가 이동될 수 있도록 설치된 레일(8)에 형성된 랙(9)과 맞물려 이동가능하게 하는 피니언(10-1)이 결합되어 있다.On the other hand, the unmanned conveyance trolley 1 of this embodiment is equipped with a drive motor 10 at its lower part, the drive motor 10 is a rack (9) formed on the rail (8) installed so that the unmanned conveyance trolley can be moved ) Is coupled to the pinion (10-1) to be movable.

그리고 무인반송대차(1)의 하부에는 레일(8)에 인접하게 설치된 그루우브형 끼움부(11)에 끼워져서 대차의 이동을 막아주는 잠금장치(12)가 설치되며 또한 위치제어용 엔코더(encoder) 구동장치(13)가 설치된다.And the lower part of the unmanned conveyance trolley 1 is provided with a locking device 12 is fitted to the groove-shaped fitting portion 11 installed adjacent to the rail (8) to prevent the movement of the trolley, and also an encoder for position control (encoder) The drive device 13 is installed.

또한, 전술한 바와 같이 센터링 디바이스(3), 테이블(2), 링크장치(4) 및 피스톤(7)은 제1도에 도시된 바와 같이 콘트롤 박스(14) 좌우에 대칭적으로 설치되어 있다. 이것이 본 발명에 따른 무인반송대차(1)의 중요한 특징이다.In addition, as described above, the centering device 3, the table 2, the linkage device 4 and the piston 7 are symmetrically provided on the left and right of the control box 14 as shown in FIG. This is an important feature of the unmanned transfer truck 1 according to the present invention.

그러나 동작에 있어서는 별도로 작동이 가능한 유압시스템을 설치하여 개별적으로 구동시켜 준다. 따라서 필요에 따라 반입용 리프터만을 구동시킬 수도 있으며 또한 필요에 따라 반출용 리프터만을 구동시킬 수도 있다. 또한, 상기 유압시스템은 고속 펌프와 저속 펌프로 분리하여 동시 운전 또는 별개 운전이 가능하게 함으로써 속도 조절 및 구간속도 제어가 가능하게 된다.However, in operation, it installs a hydraulic system that can be operated separately to drive individually. Therefore, if necessary, only the lifter for carrying in may be driven, and if necessary, only the lifter for carrying out may be driven. In addition, the hydraulic system is divided into a high speed pump and a low speed pump to enable simultaneous operation or separate operation, thereby allowing speed regulation and section speed control.

조작은 솔레노이드 밸브에 의한 PLC제어로써 조작이 되며 적재하중에 의한 누유로 위치가 변화하는 것을 방지하기 위하여 파일럿 첵 밸브가 리프트실린더 구동회로에 설치된다. 상기한 무인반송대차(1)의 전체적인 제어는 중앙에 설치된 콘트롤박스(14)에서 행해진다.The operation is controlled by PLC control by solenoid valve, and pilot shock valve is installed in the lift cylinder driving circuit to prevent the position change due to leakage by load. The overall control of the unmanned transfer truck 1 is performed in the control box 14 installed at the center.

전술한 구성과 제어에 따라 상기 무인반송대차(1)는 작동하게 되는 바, 즉 이동하면서 물건을 반입함과 동시에 물건을 반출하게 된다.According to the above-described configuration and control, the unmanned transport trolley 1 is operated, that is, the goods are brought in and taken out while moving.

예를 들어, 용접작업을 하는 경우에는 대차는 우선 용접을 요하는 물건을 반입용 리프터에 적재한 후 용접위치로 이동하여 용접위치에서 용접작업이 끝난 물건을 반출용 리프터에 다시 적재하고 위치를 약간 이동하여 반입용 리프터에 적재한 제품을 용접위치에 로딩해준다.For example, in the case of welding work, the trolley first loads the object to be welded into the lifting lifter and then moves to the welding position. It moves and loads the product loaded on the loading lifter to the welding position.

이상 설명한 바와 같이, 본 발명에 따른 무인반송대차는 반입작업과 반출작업을 동시에 실시할 수 있기 때문에 시간 소모를 줄여주고, 대기시간을 줄여주며, 또한 공정의 전체적인 균형을 유지할 수 있게 함으로써 생산성 향상에 큰 도움을 주게 된다.As described above, the unmanned transfer truck according to the present invention can be carried out at the same time the import operation and export operation, thereby reducing the time consumption, reducing the waiting time, and also to maintain the overall balance of the process to improve productivity It is a great help.

Claims (1)

중형 굴삭기의 하부사이드 프레임과 같은 중량체의 공작물을 자동용접하는 용접자동시스템에 이용되는 무인반송대차에 있어서, 프레임에 설치되어 구동시 레일위의 무인반송대차를 주행시키는 구동수단과, 상기 프레임 양측에 설치되는 유압실린더 및 상기 유압실린더 양측에 병렬로 설치되어 절첩되는 ×자형의 링크장치 상측에 장착되어 상기 유압실린더 구동시 리프팅되는 테이블과, 상기 테이블상에 설치되어 로딩되는 공작물의 센터링 및 위치고정을 하는 센터링 디바이스와, 상기 각 프레임에 설치되어 각 단위 장치들을 제어하는 콘트롤 박스를 구비함을 특징으로 하는 무인반송대차.In an unmanned transfer truck used in a welding automatic system for automatically welding a workpiece of a heavy body such as a lower side frame of a medium excavator, driving means installed on the frame to drive the unmanned carriage on a rail when driven, and both sides of the frame. Hydraulic cylinders installed on the hydraulic cylinder and the upper side of the X-shaped link device is installed in parallel on both sides of the hydraulic cylinder is mounted on the lifting table when the hydraulic cylinder driving, and the centering and positioning of the workpiece installed and loaded on the table And a centering device, and a control box installed at each frame to control each unit device.
KR1019910024245A 1991-12-24 1991-12-24 Automatic truck for welding KR950012486B1 (en)

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KR1019910024245A KR950012486B1 (en) 1991-12-24 1991-12-24 Automatic truck for welding

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Application Number Priority Date Filing Date Title
KR1019910024245A KR950012486B1 (en) 1991-12-24 1991-12-24 Automatic truck for welding

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KR930012504A KR930012504A (en) 1993-07-20
KR950012486B1 true KR950012486B1 (en) 1995-10-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110961840A (en) * 2019-12-02 2020-04-07 中国第一汽车股份有限公司 Positionable AGV carrying flexible trolley

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110961840A (en) * 2019-12-02 2020-04-07 中国第一汽车股份有限公司 Positionable AGV carrying flexible trolley

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