KR100238847B1 - Safety system of a boom for a pump truck - Google Patents

Safety system of a boom for a pump truck Download PDF

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Publication number
KR100238847B1
KR100238847B1 KR1019970054341A KR19970054341A KR100238847B1 KR 100238847 B1 KR100238847 B1 KR 100238847B1 KR 1019970054341 A KR1019970054341 A KR 1019970054341A KR 19970054341 A KR19970054341 A KR 19970054341A KR 100238847 B1 KR100238847 B1 KR 100238847B1
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South Korea
Prior art keywords
boom
control valve
pump truck
safety device
flow control
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KR1019970054341A
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Korean (ko)
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KR19990033084A (en
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신한수
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추호석
대우중공업주식회사
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Priority to KR1019970054341A priority Critical patent/KR100238847B1/en
Publication of KR19990033084A publication Critical patent/KR19990033084A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0445—Devices for both conveying and distributing with distribution hose with booms

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Abstract

본 발명은 콘크리트 펌프트럭의 붐안착용 안전장치에 관한 것으로, 붐이 붐레스트블럭(R)에 안착될 시 붐속도를 자동적으로 제어하는 밸브들을 이용하여 붐속도를 제어할 수 있도록 되며, 붐의 안착이 완전히 끝나게 되면 붐으로 유입되는 작동유를 탱크로 귀환 시켜 붐과 붐실린더를 보호할 수 있음은 물론 운전자에게 작동함에 있어 편리함을 제공하도록 된 것이다.The present invention relates to a safety device for mounting the boom of the concrete pump truck, it is possible to control the boom speed by using the valves to automatically control the boom speed when the boom is seated on the boom rest block (R), the seating of the boom When this is completely done, the hydraulic oil flowing into the boom can be returned to the tank to protect the boom and the boom cylinder as well as to provide the operator with convenience in operation.

Description

콘크리트 펌프트럭의 붐안착용 안전장치Boom seating safety device for concrete pump truck

본 발명은 콘크리트 펌프트럭에 관한 것으로, 특히 붐레스트블럭에 안전밸브가 장착되어 붐안착시 이 안전밸브가 작동되어 붐의 속도를 제어하므로 필요이상의 부하가 붐레스트블럭에 걸리지 않도록 된 콘크리트 펌프트럭의 붐안착용 안전장치에 관한 것이다.The present invention relates to a concrete pump truck, and in particular, the safety valve is mounted on the boom rest block, the safety valve is operated when the boom is mounted to control the speed of the boom, so that the load of the concrete pump truck is no longer caught on the boom rest block A safety device for boom mounting.

일반적으로, 콘크리트 펌프트럭은 레미콘트럭으로부터의 콘크리트를 적절한 위치까지 타설하는 장비로서, 사용이 끝난 콘크리트 펌프트럭은 펼쳐진 붐들을 절곡하여 붐을 차량내로 안착하게 되는데 기존의 붐안착은 붐이 붐레스트블럭에 완전히 안착되더라도 운전자가 붐실린더를 제어하는 밸브를 계속작동하면 작동유가 실린더에 계속 유입되어 붐이나 붐실린더에 무리한 힘을 가하게 되어 실린더의 수명을 단축하거나 붐자체에 미세한 벤딩(BENDING)을 일으켜, 붐에 피로현상을 가하는 요인이 되었고, 붐안착속도는 차량의 운전석에 의해 결정되므로 붐안착시 운전속도를 조절하는 과정을 항상 거치는 불편함이 있었다.In general, a concrete pump truck is a device for placing concrete from ready-mixed concrete trucks to an appropriate position. A used concrete pump truck is used to bend the unfolded booms and seat the boom in the vehicle. Even if it is fully seated in the driver's seat, if the operator continues to operate the valve that controls the boom cylinder, the hydraulic fluid will continue to flow into the cylinder and apply excessive force to the boom or boom cylinder, shortening the life of the cylinder or causing fine bending on the boom itself. Fatigue was a factor in the boom, and the boom set-up speed was determined by the driver's seat.

이에 본 발명은 상기와 같은 제반 문제점을 해소하기 위해 발명된 것으로, 붐이 붐레스트블럭에 안착될 시 붐속도를 자동적으로 제어하는 밸브를 이용하여 붐속도를 제어할 수 있도록 되며, 붐의 안착이 완전히 끝나게 되면 붐으로 유입되는 작동유를 탱크로 귀환 시켜 붐과 붐실린더를 보호할 수 있음은 물론 운전자에게 편리함을 제공하도록 된 콘크리트 펌프트럭의 붐안착용 안전장치를 제공함에 그 목적이 있다.The present invention has been invented to solve the above problems, it is possible to control the boom speed using a valve that automatically controls the boom speed when the boom is seated on the boom rest block, the seating of the boom When it is completely finished, the purpose of the present invention is to provide a boom seating safety device for a concrete pump truck that can protect the boom and the boom cylinder by returning the working oil flowing into the boom to the tank and provide the operator with convenience.

도 1은 본 발명에 따른 붐안착용 안전장치가 부착된 콘크리트 펌프트럭의 개략도,1 is a schematic view of a concrete pump truck equipped with a safety device for boom mounting according to the present invention,

도 2는 본 발명에 따른 붐 안착용 안전장치의 상세도,Figure 2 is a detailed view of the safety device for mounting the boom according to the present invention,

도 3은 본 발명에 따른 붐안착용 안전장치의 유압회로도,3 is a hydraulic circuit diagram of the safety device for boom mounting according to the present invention,

도 4는 종래기술로 도 3에 대응되는 유압회로도이다.4 is a hydraulic circuit diagram corresponding to FIG. 3 according to the related art.

B - 콘크리트 펌프트럭 R - 붐레스트블럭,B-concrete pump truck R-boom rest block,

1 - 안전밸브 1a - 유량제어밸브,1-safety valve 1a-flow control valve,

1aa - 안착부 2 - 콘트롤밸브블럭,1aa-seating part 2-control valve block,

3 - 유압펌프 4 - 붐,3-hydraulic pump 4-boom,

5 - 붐실린더 6 - 유량제어밸브,5-boom cylinder 6-flow control valve,

7 - 탱크 8 - 체크밸브,7-tank 8-check valve,

9 - 푸시버튼.9-pushbutton.

상기와 같은 목적을 달성하기 위한 본 발명은, 유량제어용 밸브인 4방향2위치 유량제어밸브와, 붐이 안착할 수 있도록 제작되어진 안착부와, 체크밸브와, 상기 밸브들을 연결하는 호스류로 구성되어진다.The present invention for achieving the above object is composed of a four-way two-position flow control valve which is a flow control valve, a seating portion is manufactured so that the boom can be seated, a check valve, and hoses connecting the valves It is done.

이하, 본 발명을 예시된 도면을 참조로 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the illustrated drawings.

도 1은 본 발명에 따른 붐안착용 안전장치가 부착된 콘크리트 펌프트럭의 개략도이고, 도 2는 본 발명에 따른 붐 안착용 안전장치의 상세도이며, 도 3은 본 발명에 따른 붐안착용 안전장치의 유압회로도인 바, 본 발명은 붐(4)의 승/하강 작동을 위한 작동유를 펌핑하는 유압펌프(3)와, 이 유압펌프(3)로 부터 압유를 공급받아 붐실린더(5)와 같은 액츄에이터로 압유흐름을 절환하는 콘트롤밸브블럭(2)로 이루어진 붐실린더(5) 유압제어회로에서, 상기 콘트롤밸브블럭(2)과 붐실린더(5) 사이에 유량제어용 밸브인 유량제어밸브(6)가 설치되고, 이 유량제어밸브(6)의 입구포트에는 탱크(7)로 부터 압유의 역류를 방지하는 체크밸브(8)가 설치되며, 상기 밸브들을 연결하는 호스류(도시하지않음)로 구성되어진다.1 is a schematic view of a concrete pump truck with a boom seating safety device according to the invention, Figure 2 is a detailed view of the boom seating safety device according to the invention, Figure 3 is a boom seating safety device according to the invention Bar is a hydraulic circuit diagram, the present invention is a hydraulic pump (3) for pumping the operating oil for the lifting / lowering operation of the boom (4), and the actuator such as the boom cylinder (5) by receiving the pressure oil from the hydraulic pump (3) In the hydraulic control circuit of the boom cylinder (5) consisting of a control valve block (2) for switching the hydraulic oil flow to the flow rate, a flow control valve (6), which is a flow control valve, is provided between the control valve block (2) and the boom cylinder (5). The inlet port of the flow control valve 6 is provided with a check valve 8 for preventing the back flow of the hydraulic oil from the tank 7, and is composed of hoses (not shown) connecting the valves. Lose.

여기서, 상기 유량제어밸브(6)는, 붐(4)이 안착부(1aa)에 접촉함에 따라 동작하는 푸시버튼(9)에 의해 그 위치가 절환되면서 펌프(3)로 부터 공급되는 압유를 탱크(7)로 귀환시키도록 되어있다.Here, the flow control valve (6) is a tank for the pressure oil supplied from the pump (3) while the position is switched by the push button (9) that operates as the boom 4 in contact with the seating portion (1aa) It is supposed to return to (7).

사용자가 유/무선을 이용하여 붐실린더(5)를 수축시키면, 상기 붐(4)이 붐레스트블럭(R)에 안착되는바, 붐(4)이 상기 안착부(1aa)에 도착하기전에는 작동유는 붐펌프(3)-> 콘트롤밸브블럭(2)-> 붐실린더(5)-> 콘트롤밸브블럭(2)-> 탱크(6)로 흐르게되고,When the user contracts the boom cylinder 5 using wired / wireless, the boom 4 is seated on the boom rest block R, and the boom 4 is operated before the boom 4 arrives at the seating part 1aa. Flows into the boom pump (3)-> control valve block (2)-> boom cylinder (5)-> control valve block (2)-> tank (6),

상기 붐1단(4)이 안착부(1aa)에 도달하면, 푸시버튼(9)이 눌려지면서 유량제어밸브(6)를 도 3에서 왼쪽으로 절환시키게 되므로, 작동유는 펌프(3)-> 콘트롤밸브블럭(2)-> 유량제어밸브(1a)-> 콘트롤밸브블럭(2)-> 탱크(6)로 흐르게 되어 붐실린더(5)로 작동유가 흐르지 않게 되어 붐은 더 이상 움직이지 않게된다. 상기 상태에서 붐(4)을 상승시키기 위해 콘트롤밸브블럭(2)을 역방향으로 작동시키면 작동유는 붐펌프(3)-> 콘트롤밸브블럭(2)-> 붐실린더(5)-> 유량제어밸브(1a)-> 콘트롤밸브블럭(2)-> 탱크(6)로 흐르게 되어 종전과 동일하게 유지되어진다.When the boom 1 stage 4 reaches the seating portion 1aa, the push button 9 is pressed to switch the flow control valve 6 to the left side in FIG. 3, so that the hydraulic fluid is controlled from the pump 3-> control. It flows into the valve block (2)-> flow control valve (1a)-> control valve block (2)-> tank (6) so that no hydraulic oil flows to the boom cylinder (5), the boom no longer moves. When operating the control valve block (2) in the reverse direction to raise the boom (4) in the above state, the operating oil is boom pump (3)-> control valve block (2)-> boom cylinder (5)-> flow control valve ( 1a)-> control valve block (2)-> tank (6) is maintained as before.

이상 설명한 바와 같이 본 발명에 의하면, 붐이 붐레스트블럭(R)에 안착될 시 붐속도를 자동적으로 제어하는 밸브들을 이용하여 붐속도를 제어할 수 있도록 되며, 붐의 안착이 완전히 끝나게 되면 붐으로 유입되는 작동유를 탱크로 귀환 시켜 붐과 붐실린더를 보호할 수 있음은 물론 운전자에게 작동을 편리하게 할 수 있는 효과가 있다.As described above, according to the present invention, when the boom is seated on the boom rest block R, the boom speed can be controlled using valves for automatically controlling the boom speed, and when the boom is completely finished, the boom is By returning the hydraulic oil to the tank to protect the boom and the boom cylinder, it is also effective for the operator to operate conveniently.

이상에서 설명한 것은 본 발명에 의한 콘크리트 펌프트럭의 붐안착용 안전장치를 실시하기위한 하나의 실시예에 불과한 것으로, 이하 청구범위내에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진자라면 누구든지 다양한 변경실시가 가능할 것이다.What has been described above is just one embodiment for implementing a safety device for boom seating of a concrete pump truck according to the present invention, it is usually in the field to which the invention belongs without departing from the spirit of the invention claimed in the following claims. Anyone with knowledge of the system will be able to make various changes.

Claims (2)

콘크리트펌퍼트럭의 붐실린더 제어 유압회로에 있어서,In the boom cylinder control hydraulic circuit of the concrete pump truck, 콘트롤밸브블럭(2)과 붐실린더(5) 사이에, 붐(4)이 안착되면 절환되어 펌프(3)로 부터 공급되는 압유를 탱크(7)로 귀환시키도록 하는 유량제어밸브(6)가 설치된 것을 특징으로 하는 콘크리트 펌프트럭의 붐안착용 안전장치.Between the control valve block 2 and the boom cylinder 5, when the boom 4 is seated, the flow control valve 6 is switched to return the pressure oil supplied from the pump 3 to the tank 7. Boom seating safety device for concrete pump truck, characterized in that installed. 제 1항에 있어서, 상기 유량제어밸브(6)는, 한쪽 입구포트가 펌프(3)로 연결되고, 다른쪽 입구포트는 체크밸브(8)를 매개로 탱크(7)로 연결된 것을 특징으로 하는 콘크리트 펌프트럭의 붐안착용 안전장치.2. The flow control valve (6) according to claim 1, characterized in that the flow control valve (6) has one inlet port connected to the pump (3) and the other inlet port connected to the tank (7) via the check valve (8). Boom seating safety device for concrete pump truck.
KR1019970054341A 1997-10-23 1997-10-23 Safety system of a boom for a pump truck KR100238847B1 (en)

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KR1019970054341A KR100238847B1 (en) 1997-10-23 1997-10-23 Safety system of a boom for a pump truck

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KR1019970054341A KR100238847B1 (en) 1997-10-23 1997-10-23 Safety system of a boom for a pump truck

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KR100238847B1 true KR100238847B1 (en) 2000-01-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100450403B1 (en) * 2002-05-09 2004-09-30 한국전자통신연구원 High Speed Backplane in Switch Network System
CN103147579A (en) * 2013-01-09 2013-06-12 广西大都混凝土集团有限公司 Safety device for tail end hose of pump truck
CN103640997A (en) * 2013-11-25 2014-03-19 无锡起岸重工机械有限公司 Crane lifting arm nose structure
CN104213710A (en) * 2013-06-04 2014-12-17 冯先峰 Electro-hydraulic remote control system of concrete hopper

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100521411B1 (en) * 1998-10-09 2005-12-21 두산인프라코어 주식회사 Locking device for boom seating of concrete pump truck

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100450403B1 (en) * 2002-05-09 2004-09-30 한국전자통신연구원 High Speed Backplane in Switch Network System
CN103147579A (en) * 2013-01-09 2013-06-12 广西大都混凝土集团有限公司 Safety device for tail end hose of pump truck
CN103147579B (en) * 2013-01-09 2016-03-30 广西大都混凝土集团有限公司 Safety device for tail end hose of pump truck
CN104213710A (en) * 2013-06-04 2014-12-17 冯先峰 Electro-hydraulic remote control system of concrete hopper
CN103640997A (en) * 2013-11-25 2014-03-19 无锡起岸重工机械有限公司 Crane lifting arm nose structure

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