KR19990013404U - Automatic swing lock for hydraulic truck crane - Google Patents

Automatic swing lock for hydraulic truck crane Download PDF

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Publication number
KR19990013404U
KR19990013404U KR2019970026687U KR19970026687U KR19990013404U KR 19990013404 U KR19990013404 U KR 19990013404U KR 2019970026687 U KR2019970026687 U KR 2019970026687U KR 19970026687 U KR19970026687 U KR 19970026687U KR 19990013404 U KR19990013404 U KR 19990013404U
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KR
South Korea
Prior art keywords
swing
boom
solenoid valve
hydraulic
swing lock
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KR2019970026687U
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Korean (ko)
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KR200169987Y1 (en
Inventor
유영재
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김형벽
현대중공업 주식회사
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Priority to KR2019970026687U priority Critical patent/KR200169987Y1/en
Publication of KR19990013404U publication Critical patent/KR19990013404U/en
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Publication of KR200169987Y1 publication Critical patent/KR200169987Y1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/88Safety gear
    • B66C23/94Safety gear for limiting slewing movements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/18Control systems or devices
    • B66C13/50Applications of limit circuits or of limit-switch arrangements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/54Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with pneumatic or hydraulic motors, e.g. for actuating jib-cranes on tractors

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)

Abstract

본 고안은 유압식 트럭 크레인용 자동 스윙잠금장치 시스템에 관한 것이다.The present invention relates to an automatic swing lock system for a hydraulic truck crane.

유압식 크레인은 80KM/h의 고속 주행이 가능한 장비이기 때문에 작업장 이동시 운전자가 실수로 스윙파킹 및 스윙록 장치를 하지 않고 커브길 주행중 원심력에 의해 붐이 붐레스트에서 이탈되면서 상부선회체와 함께 회전하여 중대한 사고를 일으킬 수 있다.Hydraulic crane is a machine that can travel at high speed of 80KM / h, so the driver does not inadvertently swing swing and swing lock device when moving the workplace, and the boom is disengaged from the boom rest by the centrifugal force while driving on the curve. It can cause an accident.

즉 도심지 공사에 있어서 유압식 트럭 크레인이 작업현장과 정비소 및 또 다른 작업현장을 왕래하기 때문에 일어나는 사고를 예방키 위한 것이다.In other words, in the construction of urban centers, hydraulic truck cranes are used to prevent accidents caused by traveling to and from work sites, repair shops and other work sites.

붐레스트(B1)에 설치된 리미트 스위치(2)에 의해 작동하는 솔레노이드 밸브(6)와, 이 솔레노이드 밸브(6)의 작동으로 작동하는 네거티브 실린더(7a)를 갖는 스윙모터(7)와 이에 의해 붐을 붐레스트에 스윙록시키는 스윙록 실린더(9)와 솔레노이드 밸브(8)를 절환시키는 토글스위치(3)로 구성된다.A swing motor 7 having a solenoid valve 6 actuated by a limit switch 2 installed in the boom rest B 1 , a negative cylinder 7a actuated by operation of the solenoid valve 6, and thereby It consists of a swing lock cylinder 9 for swinging the boom to the boom rest and a toggle switch 3 for switching the solenoid valve 8.

Description

유압식 트럭 크레인용 자동 스윙잠금장치Automatic swing lock for hydraulic truck crane

본 고안은 유압식 트럭 크레인용 자동 스윙잠금장치 시스템에 관한 것이다.The present invention relates to an automatic swing lock system for a hydraulic truck crane.

유압식 크레인은 80KM/h의 고속 주행이 가능한 장비이기 때문에 작업장 이동시 운전자가 실수로 스윙파킹 및 스윙록 장치를 하지 않고 커브길 주행중 원심력에 의해 붐이 붐레스트에서 이탈되면서 상부선회체와 함께 회전하여 중대한 사고를 일으킬 수 있다.Hydraulic crane is a machine that can travel at high speed of 80KM / h, so the driver does not inadvertently swing swing and swing lock device when moving the workplace, and the boom is disengaged from the boom rest by the centrifugal force while driving on the curve. It can cause an accident.

즉 도심지 공사에 있어서 유압식 트럭 크레인이 작업현장과 정비소 및 또 다른 작업현장을 왕래하기 때문에 일어나는 사고를 예방키 위한 것이다.In other words, in the construction of urban centers, hydraulic truck cranes are used to prevent accidents caused by traveling to and from work sites, repair shops and other work sites.

이 트럭크레인에는 상부작업기인 붐이 선회체와 함께 선회하면서 작업하는 것이기 때문에 운전자는 이 선회하는 작업에 습성이 붙어 있고 작업장 이동시에는 이 선회작업모드를 그대로 두고 이동하는 경우가 많다.Since this truck crane is working while the upper work machine boom is turning with the swinging body, the driver has a habit of turning the work and often moves the turning work mode as it is when moving the workplace.

물론 운전자가 작업모드와 주행모드를 주의깊게 인지하고 주행시에는 선회체의 스윙파킹 및 스윙록 장치를 실수없이 수행한다면 별 문제가 없으나 종래 수동으로 장비한 스윙파킹 및 핀 스윙록 장치에 있어서는 상기한 바와 같이 선회 작업에 중점이 있는 트럭크레인의 특성상 산회체의 스윙파킹과 스윙록장치는 다소 등한시되는 것이 현실이다.Of course, if the driver carefully recognizes the working mode and the driving mode and performs the swing parking and swing lock device of the swinging body without any mistake while driving, there is no problem, but the swing parking and the pin swing lock device equipped with the conventional manual are as described above. Likewise, the swing parking and swing lock devices of the mountain ash are somewhat neglected due to the characteristics of truck cranes that focus on turning operations.

이러한 상황에 있어서 커브길을 주행하면 그 회전 관성으로 선회체가 회전되게 되고 이에 연결 설치된 대형의 크레임 붐이 주변 건물과 시설을 타격하여 재산 및 인명사고가 발생하는 산업재해로 확대되는 것이다.In such a situation, when driving on a curve road, the rotating body rotates due to its rotational inertia, and the large-scale cram boom connected to it expands to an industrial accident in which property and casualties are caused by hitting nearby buildings and facilities.

본 고안은 상기한 바와 같은 종래 유압식 트럭 크레인 스윙장치가 가지는 제반결점에 감안하여 기존의 수동식 스윙파킹 및 고정식 스윙록을 개선하여 크레인이 작업장을 이동하기 위해 붐을 붐레스트에 격납시키면 자동으로 스윙파킹 및 스윙록이 작동되도록 하여 운전자 방심에 의한 사고 위험 방지 및 수동으로 스윙록 핀을 고정해야 하는 번거로움을 실린더를 이용하여 자동으로 고정하게 함으로서 안전성 및 편리성을 구현한 시스템으로 개시되어 자동 스윙작동장치의 작동은 붐을 하강시키고 붐을 붐레스트에 격납하면 리미트 스위치가 작동하여 전기신호를 솔레노이드 밸브에 전달하고 유압펌프로부터 전달된 유압은 스윙록 실린더를 신장시켜 스윙록을 작동시킨다.The present invention improves the existing manual swing parking and fixed swing lock in consideration of all the drawbacks of the conventional hydraulic truck crane swing device as described above and automatically swings the parking when the boom is stored in the boom rest to move the workshop. And swing lock to activate the system to realize safety and convenience by preventing the risk of accidents caused by the driver's attention and automatically fixing the hassle to manually fix the swing lock pin using a cylinder. The operation of the device lowers the boom and the boom rests on the boom rest, which activates the limit switch to transmit electrical signals to the solenoid valves and the hydraulic pressure from the hydraulic pump extends the swing lock cylinder to activate the swing lock.

한편, 스윙모터 내부에 장착된 네거티브 실린더 내부 유압은 솔레노이드 밸브를 거쳐 탱크로 리턴되면 스윙모터 내부의 네거티브 실린더가 작동하여 스윙파킹이 된다.On the other hand, when the hydraulic pressure inside the negative cylinder mounted inside the swing motor is returned to the tank through the solenoid valve, the negative cylinder inside the swing motor operates to swing parking.

자동 스윙잠금장치 해제는 붐을 상승시키면 리미트 스위치 접점이 떨어지면서 솔레노이드 밸브의 전기신호를 차단하여 유압펌프로부터 공급된 유압이 스윙록 실린더를 수축시키고 스윙록은 해제된다.When the boom is raised, the limit switch contact is dropped when the boom is raised, and the electric signal from the solenoid valve is blocked so that the hydraulic pressure supplied from the hydraulic pump contracts the swing lock cylinder and the swing lock is released.

한편 솔레노이드 밸브를 통해 스윙모터 내부의 네거티브 실린더로 공급된 유압은 네거티브 실린더의 스프링력을 이기고 스윙파킹을 해제시킨다.Meanwhile, the hydraulic pressure supplied to the negative cylinder inside the swing motor through the solenoid valve overcomes the spring force of the negative cylinder and releases the swing parking.

크레인 작업시 상부선회체 스윙파킹 방법은 토글스위치를 작동하면 솔레노이드 밸브가 절환되면서 스윙모터 내의 네거티브 실린더 내부에 있는 유압이 유압탱크로 리턴되어 스윙파킹이 작동되게 한 것으로 완성되어 있다.The swing swing method of the upper swing structure during crane work is completed by switching the solenoid valve when the toggle switch is operated and returning the hydraulic pressure inside the negative cylinder in the swing motor to the hydraulic tank so that swing parking can be operated.

도 1은 본 고안의 작동시 상세도.1 is a detailed view at the time of operation of the present invention.

도 2는 본 고안의 유압 및 전기 회로도.2 is a hydraulic and electrical circuit diagram of the present invention.

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

1 : 밧데리2 : 리미트 스위치1: Battery 2: Limit switch

3 : 토글스위치4 : 유압펌프3: toggle switch 4: hydraulic pump

5 : 릴리프 밸브6 : 솔레노이드 밸브5: Relief Valve 6: Solenoid Valve

7 : 스윙모터7a : 네거티브 실린더7: swing motor 7a: negative cylinder

8 : 솔레노이드 밸브9 : 스윙록 실린더8: Solenoid Valve 9: Swing Lock Cylinder

B1: 붐레스트B2: 붐B 1 : Boom Rest B 2 : Boom

상기한 바와 같은 목적을 달성하고 종래의 결점을 제거키 위한 과제를 수행하기 위하여 개시된 본 고안의 구성과 작용을 그 실시예인 첨부도면에 연계시켜 상세히 설명하면 다음과 같다.In order to achieve the object as described above and to perform the task for eliminating the drawbacks of the prior art will be described in detail with reference to the accompanying drawings, the configuration and operation of the present invention as an embodiment thereof.

도 1은 본 고안의 작동시 상세도이고;1 is a detailed view of the operation of the present invention;

도 2는 본 고안이 유압 및 전기회로도인 바;2 is a hydraulic and electrical circuit diagram of the present invention;

붐레스트(B1)에 설치된 리미트 스위치(2)에 의해 작동하는 솔레노이드 밸브(6)와, 이 솔레노이드 밸브(6)의 작동으로 작동하는 네거티브 실린더(7a)를 갖는 스윙모터(7)와 이에 의해 붐을 붐레스트에 스윙록시키는 스윙록 실린더(9)와 상기 솔레노이드 밸브(8)을 절환시키는 토글스위치(3)로 구성되어 있다.A swing motor 7 having a solenoid valve 6 actuated by a limit switch 2 installed in the boom rest B 1 , a negative cylinder 7a actuated by operation of the solenoid valve 6, and thereby It consists of the swing lock cylinder 9 which swings a boom to a boom rest, and the toggle switch 3 which switches the said solenoid valve 8.

본 고안은 유압식 RT, RT 크레인, AT 크레인용 자동 스윙잠금장치로서 붐레스트(B1)에 장착된 리미트 스위치(2)를 이용하여 스윙모터(7) 내부의 네거티브 실린더(7a)를 작동하여 스윙파킹시키고 스윙록 실린더(9)를 신장하여 스윙록을 작동시키는 시스템인바;The present invention is an automatic swing lock device for hydraulic RT, RT crane, AT crane, and swings by operating the negative cylinder (7a) inside the swing motor (7) by using the limit switch (2) mounted on the boom rest (B 1 ). A system for parking and extending the swing lock cylinder 9 to operate the swing lock;

자동 스윙잠금장치 작동은 붐(B2)을 하강시키고 붐을 붐레스트에 격납하면 리미트 스위치(2)가 작동하여 전기신호를 솔레노이드 밸브(6)에 전달하고 유압펌프(4)로부터 전달된 유압은 스윙록 실린더(9)를 신장시켜 스윙록을 작동시킨다.The automatic swing lock operation lowers the boom (B 2 ), when the boom is stored in the boom rest, the limit switch (2) is activated to transmit an electrical signal to the solenoid valve (6) and the hydraulic pressure transmitted from the hydraulic pump (4) Extend the swing lock cylinder 9 to activate the swing lock.

한편, 스윙모터(7) 내부에 장착된 네거티브 실린더(7a) 내부 유압은 솔레노이드 밸브(6)(8)를 거쳐 탱크로 리턴되면 스윙모터(7) 내부의 네거티브 실린더가 작동하여 스윙파킹이 된다.On the other hand, when the hydraulic pressure inside the negative cylinder (7a) mounted inside the swing motor (7) is returned to the tank through the solenoid valve (6) (8), the negative cylinder inside the swing motor (7) is operated to swing parking.

자동 스윙잠금장치 해제는 붐을 상승시키면 리미트 스위치(2) 접점이 떨어지면서 솔레노이드 밸브(6)의 전기신호를 차단하여 유압펌프(4)로부터 공급된 유압이 스윙록 실린더(9)를 수축시키고 스윙록은 해제된다.When the boom is lifted, the automatic swing lock releases the limit switch (2) contact and the electric signal of the solenoid valve (6) cuts off so that the hydraulic pressure supplied from the hydraulic pump (4) contracts the swing lock cylinder (9) and swings. The lock is released.

한편 솔레노이드 밸브(6)를 통해 스윙모터(7) 내부의 네거티브 실린더(7a)로 공급된 유압은 네거티브 실린더(7a)의 스프링력을 이기고 스윙파킹을 해제시킨다.Meanwhile, the hydraulic pressure supplied to the negative cylinder 7a inside the swing motor 7 through the solenoid valve 6 overcomes the spring force of the negative cylinder 7a and releases swing parking.

크레인 작업시 상부선회체 스윙파킹 방법은 토글스위치(3)를 작동하면 솔레노이드 밸브(8)가 절환되면서 스윙모터(7) 내의 네거티브 실린더(7a) 내부에 있는 유압이 유압탱크로 리턴되어 스윙파킹이 작동된다.The swing swing method of the upper swing structure during crane operation is that when the toggle switch (3) is operated, the solenoid valve (8) is switched and the hydraulic pressure in the negative cylinder (7a) in the swing motor (7) is returned to the hydraulic tank so that swing parking is performed. It works.

상기의 본 고안으로서 빠른 속도로 주행하다가 건물 기타 시설물에 붐이 타격되어 야기되는 안전사고를 예방함과 동시 크레인 작업시 상부선회체 스윙파킹도 겸할 수 있어 중량이 나가는 유압식 트럭 크레인의 안전장치로서 중공업 산업 재해 예방에 기여하는 효과가 있는 것이다.As the above invention, it is possible to prevent the safety accident caused by the boom hitting the building and other facilities while running at high speed, and also to double swing swing parking at the same time as the crane work. It has the effect of contributing to the prevention of industrial accidents.

Claims (1)

붐레스트(B1)에 설치된 리미트 스위치(2)에 의해 작동하는 솔레노이드 밸브(6)와, 이 솔레노이드 밸브(6)의 작동으로 작동하는 네거티브 실린더(7a)를 갖는 스윙모터(7)와 이에 의해 붐을 붐레스트에 스윙록시키는 스윙록 실린더(9)와 상기 솔레노이드 밸브(8)를 절환시키는 토글스위치(3)로 구성된 것을 특징으로 하는 유압식 트럭 크레인용 자동 스윙잠금장치.A swing motor 7 having a solenoid valve 6 actuated by a limit switch 2 installed in the boom rest B 1 , a negative cylinder 7a actuated by operation of the solenoid valve 6, and thereby Automatic swing lock device for a hydraulic truck crane, characterized in that consisting of a swing lock cylinder for switching the boom to the boom rest and a toggle switch (3) for switching the solenoid valve (8).
KR2019970026687U 1997-09-26 1997-09-26 Auto swing locking device of crane KR200169987Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019970026687U KR200169987Y1 (en) 1997-09-26 1997-09-26 Auto swing locking device of crane

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Application Number Priority Date Filing Date Title
KR2019970026687U KR200169987Y1 (en) 1997-09-26 1997-09-26 Auto swing locking device of crane

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KR19990013404U true KR19990013404U (en) 1999-04-15
KR200169987Y1 KR200169987Y1 (en) 2000-03-02

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