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KR200303613Y1 - A oil hydraulic cylinder for opening and shuting a loading plate - Google Patents

A oil hydraulic cylinder for opening and shuting a loading plate Download PDF

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Publication number
KR200303613Y1
KR200303613Y1 KR20-2002-0033133U KR20020033133U KR200303613Y1 KR 200303613 Y1 KR200303613 Y1 KR 200303613Y1 KR 20020033133 U KR20020033133 U KR 20020033133U KR 200303613 Y1 KR200303613 Y1 KR 200303613Y1
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KR
South Korea
Prior art keywords
loading plate
hydraulic cylinder
cylinder
closing
opening
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Expired - Fee Related
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KR20-2002-0033133U
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Korean (ko)
Inventor
문학용
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문학용
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Priority to KR20-2002-0033133U priority Critical patent/KR200303613Y1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
    • B60P1/26—Means for controlling movement of tailboards or sideboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
    • B60P1/16—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms
    • B60P1/162—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms the hydraulic system itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
    • B60P1/4471—General means for controlling movements of the loading platform, e.g. hydraulic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
    • B60P1/4492—Design or construction of the moving platform itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/02—Platforms; Open load compartments
    • B62D33/023—Sideboard or tailgate structures
    • B62D33/027—Sideboard or tailgate structures movable

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

본 고안은 화물적재용 적재판의 개,폐에 사용되는 유압실린더에 관한 것으로서, 더욱 상세하게는 화물차량의 후부에 장착하여 화물의 적재 및 하역에 사용하는 적재판을 화물차량의 후부에 직립시키거나 수평으로 내리고 하강된 적재판의 밑면이 지면에 접촉할때 사용되는 적재판 개폐용 유압실린더에 관한 것이다.The present invention relates to a hydraulic cylinder used for opening and closing of a cargo loading plate, and more particularly, to be mounted at the rear of a freight vehicle so that a loading plate for loading and unloading a cargo is erected at the rear of the freight vehicle. Or a hydraulic cylinder for loading plate opening / closing which is used when the bottom of the lowering plate is lowered or leveled and is in contact with the ground.

본 고안은 유압실린더내부에 설치되고 화물적재용 적재판을 차량후부에서 일정 각도 개방하는데 사용되는 적재판 개,폐 스프링과 실린더헤드와 피스톤로드를 관통하여 일정한 깊이로 삽입되고 일단은 기름 이동로의 개,폐에 사용되며 타단은 실린더쿠션용스프링이 내장된 실린더쿠션용밸브와 유압실린더내부의 일실에서 타실로 기름이 통과되는 제1솔레노이드와 유압실린더내부의 일실에서 탱크로 기름이 통과되는 제2솔레노이드와 유압실린더에서 유출되는 기름의 양을 조절하는 압력보상용 스로틀밸브로 구성되어져 적재판의 밑면이 지면에 안착할 수 있도록 하여 적재판에 적재된 화물에 손상이 가지 않도록하고 유압실린더에 가해지는 하중을 충분히 견디는 유압실린더를 제공하는데 그 목적이 있다.The present invention is installed inside the hydraulic cylinder and is inserted into a certain depth through the loading plate opening, closing spring, cylinder head and piston rod, which is used to open the loading plate loading plate at a certain angle from the rear of the vehicle. Used for opening and closing, the other end is a cylinder cushion valve with a built-in cylinder cushion spring and a first solenoid through which oil passes from one chamber inside the hydraulic cylinder to the other chamber, and a second passage of oil from one chamber inside the hydraulic cylinder to the tank. Consists of a pressure compensation throttle valve that regulates the amount of oil spilled from the solenoid and the hydraulic cylinder so that the bottom of the loading plate can be seated on the ground so as not to damage the cargo loaded on the loading plate and applied to the hydraulic cylinder. The object is to provide a hydraulic cylinder that can withstand loads sufficiently.

Description

적재판 개폐용 유압실린더 { A oil hydraulic cylinder for opening and shuting a loading plate }Hydraulic cylinder for opening and closing the loading plate {A oil hydraulic cylinder for opening and shuting a loading plate}

본 고안은 화물적재용 적재판의 개,폐에 사용되는 유압실린더에 관한 것으로서, 더욱 상세하게는 화물차량의 후부에 장착하여 화물의 적재 및 하역에 사용하는 적재판을 화물차량의 후부에 직립시키거나 수평으로 내리고 하강된 적재판의 밑면이 지면에 접촉할때 사용되는 적재판 개폐용 유압실린더에 관한 것이다. 화물적재용 적재판은 화물차량의 콘테이너에 화물을 적재하거나 하역하는데 사용되어지며 유압실린더를 이용하여 그 작업을 수행하므로 현재 화물차량에 널리 장착되어 사용되어지고 있다. 일반적으로 화물적재용 적재판은 화물차량의 차량후부에 설치되며 적재판의 상승, 하강에 사용되는 상승실린더와 적재판의 개,폐에 사용되는 개폐실린더로 구성되어진다. 화물차량에 적재되는 화물은 그 크기나 무게에 차이가 많을 뿐아니라 이러한 화물을 콘테이너에 적재, 하적시에 주의를 요하는 경우가 많다. 특히 화물차 콘테이너에서 화물을 적재판에 적재한 후 지면으로 하강시켜 적재판의 밑면이 지면과 완전히 접촉하는 단계에서 적재판에 가해지는 충격을 최소화하는 것이 무엇보다 중요하다.The present invention relates to a hydraulic cylinder used for opening and closing of a cargo loading plate, and more particularly, to be mounted at the rear of a freight vehicle so that a loading plate for loading and unloading a cargo is erected at the rear of the freight vehicle. Or a hydraulic cylinder for loading plate opening / closing which is used when the bottom of the lowering plate is lowered or leveled and is in contact with the ground. Cargo loading plate is used for loading or unloading cargo into the container of the freight vehicle, and it is widely used in freight vehicle because it performs the work by using hydraulic cylinder. In general, the loading plate for cargo loading is installed at the rear of the vehicle and consists of the lifting cylinder used for lifting and lowering the loading plate and the opening and closing cylinder used for opening and closing the loading plate. Cargoes loaded in freight vehicles are not only large in size and weight but also require caution when loading and unloading such cargoes in containers. In particular, it is important to minimize the impact on the loading plate in the stage where the bottom of the loading plate is completely in contact with the ground after loading the cargo on the loading plate in the van container.

이러한 충격의 감소를 최소화 할 수 있도록한 종래의 적재판 개폐용 유압실린더는 대개 복동실린더로 사용되어지며, 도2에 도시된바와 같이 실린더 벽에 유류가 통과하는 (A)포트와 (B)포트가 있으며 실린더 헤드는 일정크기 돌출된 형태로 되어있고 상기 돌출된 실린더 헤드의 사이즈에 맞도록 내부 구조를 하고 있다. 상기와 같은 구조를 가진 적재판 개폐용 유압실린더의 작동을 살펴보면 실린더헤드가 아래로 작동됨과 동시에 포트(A), 포트(B)로 기름이 유출되어 차량에 부착된 유류탱크로 흘러들어가게 되며, 이 후 실린더 헤드가 작동됨에 따라 실린더 헤드가 포트(A)를 막으면 실린더내부의 기름은 포트(B)로만 유출되게 된다. 이 상태는 적재판의 밑면이 지면과 접촉하는 단계로 포트(B)로만 기름이 유출되므로 적재판이 지면에 서서히 접촉하게 된다.Conventional loading plate opening and closing hydraulic cylinder to minimize the reduction of impact is usually used as a double-acting cylinder, as shown in Figure 2 port (A) and (B) through which oil passes through the cylinder wall The cylinder head has a predetermined size protruding shape and has an internal structure to fit the size of the protruding cylinder head. Looking at the operation of the hydraulic cylinder for loading plate opening and closing having a structure as described above, while the cylinder head is operated downward, the oil is leaked to the port (A), port (B) flows into the oil tank attached to the vehicle. After the cylinder head is operated, when the cylinder head blocks the port A, the oil in the cylinder is discharged only to the port B. In this state, the bottom of the loading plate is in contact with the ground, and oil is leaked only to the port B so that the loading plate is gradually in contact with the ground.

또한 상기와 같은 방법외에 적재판 개,폐에 일반적인 복동실린더를 사용해서 적재판을 차량후부의 직립상태에서 일정각도 개방하거나 적재판의 밑면이 지면에 접촉하도록 하기도 한다.In addition, a double acting cylinder is generally used for opening and closing the loading plate, and the loading plate is opened at an angle in the upright state of the rear of the vehicle, or the bottom of the loading plate is in contact with the ground.

그러나 상기에서 종래의 적재판 개폐용 유압실린더는 다음과 같은 문제점을 안고 있다. 첫째, 일반적인 복동식 유압실린더는 적재판의 밑면과 지면을 접촉시키는데 적재판의 속도를 조절할 수 없다는 문제점이 있다. 즉, 일정한 양의 기름이 실린더 내부에서 유출되기 때문에 적재판의 밑면이 지면에 접촉할 때 적재판의 속도를 감소 시킬수 없어 적재판이 쿵하고 지면과 접촉하게 되어 적재판에 놓인 화물등에 충격이 가해지고 크기가 큰 화물이 넘어지는 등의 문제가 있다.However, the conventional mounting plate opening and closing hydraulic cylinder has the following problems. First, the general double-acting hydraulic cylinder has a problem that can not adjust the speed of the loading plate to contact the bottom of the loading plate and the ground. That is, since a certain amount of oil is leaked from inside the cylinder, when the bottom of the loading plate is in contact with the ground, the speed of the loading plate cannot be reduced. There are problems such as falling and large cargoes.

또한 포트(A)와 포트(B)의 구조를 가진 유압실린더의 경우 적재판에 가해지는 과도한 하중을 견디지 못하고 유압실린더의 수명이 단축된다는 문제점이 있다. 즉, 적재판에 적재되는 화물의 무게를 지탱하는 유압실린더에 걸리는 하중은 보통 20톤이상의 하중이 걸리는데 (A)포트를 막아 실린더에서 유출되는 기름의 양을 줄이는 경우 상대적으로 실린더의 단면이 좁아져 충분한 하중을 견딜 수 없게된다.In addition, in the case of the hydraulic cylinder having the structure of the port (A) and the port (B), there is a problem that the life of the hydraulic cylinder is shortened without being able to endure excessive load applied to the loading plate. In other words, the load on the hydraulic cylinder supporting the weight of the cargo loaded on the loading plate is usually 20 tons or more, but when the (A) port is blocked to reduce the amount of oil flowing out of the cylinder, the cross section of the cylinder is relatively narrow. Can not bear enough load.

본 고안은 상기와 같은 문제점을 해소하기 위하여 고안된 것으로서, 화물적재판에 걸리는 하중이 유압실린더의 피스톤의 이동에 무관하게 동일한 하중을 견디는 견고하고 수명이 긴 유압실린더를 제공함을 하며, 화물적재판의 밑면이 지면과 접촉할 때 부드럽게 지면에 접촉되어 적재된 화물을 안전하게 하역할 수 있고, 지면에 접촉되는 적재판의 이동속도를 조절할 수 있는 유압실린더를 제공함을 그 목적으로 한다. 이를 위해 본 고안은 화물적재용 적재판의 개,폐에 사용되는 유압실린더에 기름이 유출되는 2개의 포트를 형성하고 피스톤헤드가 작동하면서 상기 포트중 일 포트를 막아 기름의 유출량을 조절하고 다른 일 포트에서 유출되는 기름의 양은 압력보상용 스로틀밸브를 이용하여 조절함으로써 상기와 같은 목적을 달성할 수 있다.The present invention is designed to solve the above problems, and provides a solid, long-life hydraulic cylinder that bears the same load irrespective of the movement of the piston of the hydraulic cylinder, the load applied to the cargo loading plate, It is an object of the present invention to provide a hydraulic cylinder capable of smoothly unloading the loaded cargo when the bottom is in contact with the ground, and to control the moving speed of the loading plate in contact with the ground. To this end, the present invention forms two ports through which oil is leaked to the hydraulic cylinder used for opening and closing of the cargo loading plate, and while the piston head is operated, it blocks one of the ports to control the amount of oil flowing out and The amount of oil flowing out of the port can be achieved by adjusting the pressure compensation throttle valve.

도1은 적재판이 차량후부에 장착되어 작동되는 상태를 도시한 측면도.1 is a side view showing a state in which the mounting plate is mounted and operated in the rear of the vehicle.

도2는 종래 적재판 개폐용실린더의 단면도.Figure 2 is a cross-sectional view of a conventional loading plate opening and closing cylinder.

도3은 본고안 적재판 개폐용 단동유압실린더의 단면도.Figure 3 is a cross-sectional view of the single-acting hydraulic cylinder for opening and closing the mounting plate of the present invention.

도4는 적재판이 수평상태를 이루었을때 본고안 적재판 개폐용 유압실린더의 상태도.Figure 4 is a state diagram of the hydraulic cylinder for loading and closing the loading plate when the loading plate is in a horizontal state.

도5은 적재판 하부면이 지면과 완전히 접촉되었을때 본고안 적재판 개폐용 유압실린더의 상태도.Figure 5 is a state diagram of the hydraulic cylinder for loading plate opening and closing in the present case when the lower surface of the loading plate is completely in contact with the ground.

도6은 본 고안 적재판 개폐용 유압실린더의 유압회로도.Figure 6 is a hydraulic circuit diagram of the hydraulic cylinder for opening and closing the design plate.

<도면의 주요부호에 대한 부호의 설명><Description of symbols for major symbols in the drawings>

10 : 적재판 20 : 피스톤로드10: loading plate 20: piston rod

30 : 실린더헤드 40 : 적재판 개,폐스프링 50 : 실린더쿠션용밸브 60 : 유압실린더 70 : 제1솔레노이드 80 : 제2솔레노이드 90 : 압력보상용 유량속도조절 스로틀밸브30: cylinder head 40: loading plate open, closed spring 50: cylinder cushion valve 60: hydraulic cylinder 70: first solenoid 80: second solenoid 90: pressure compensation flow rate control throttle valve

이하 첨부된 도면에 의해 상세하게 그 구성 및 작동상태 등을 설명하기로 한다.Hereinafter, the configuration and operation state of the present invention will be described in detail with reference to the accompanying drawings.

도1은 화물적재용 적재판(10)이 차량후부에 장착되어 작동되는 상태를 도시한 측면도로서, 일반적으로 화물적재용 적재판(10)은 화물차량 하부 프레임 브라킷에 적재판의 상승,하강에 사용하는 상승실린더의 일단이, 타단은 적재판의 고정부재에 일정거리 이격되어 한쌍이 설치되고 이 상승실린더와 일정거리를 두고 적재판의 개,폐에 사용되는 적재판 개폐실린더가 일단은 브라킷에 다단은 적재판에 한쌍으로 설치되어 구성된다.1 is a side view showing a state in which the cargo loading plate 10 is mounted and operated in the rear of the vehicle, in general, the cargo loading plate 10 is mounted on the lower frame bracket of the freight vehicle in order to raise or lower the loading plate. One end of the lift cylinder to be used, the other end is spaced a certain distance from the fixing member of the loading plate, a pair is installed, and the loading plate opening and closing cylinder used for opening and closing the loading plate is fixed to the bracket at a certain distance from the rising cylinder. The multi-stage consists of a pair of mounting plates.

상기와 같이 구성된 화물차량용 적재판(10)을 이용하여 화물차량에서 화물을 하역하는 경우 작동을 살펴보면, 화물적재용 적재판(10)의 작동자는 적재판(10)을 작동하는 콘트롤러(도면 미도시)를 이용하여 차량과 직립된 적재판(10)을 수평상태로 맞추어 화물차량의 콘테이너에서 화물을 적재판으로 옮긴 후 하강버튼을 누르면 적재판(10) 상승실린더는 적재판을 지면 지면까지 하강시킨후 적재판 개,폐 버튼중 열림 버튼을 눌러 적재판(10)의 밑면이 지면에 완전히 접촉하게 한 후 적재판(10)에서 화물을 옮기게 된다. 또한 지면의 화물을 화물차량의 콘테이너에 적재하는 경우는 상기의 역순으로 진행된다.Looking at the operation when loading and unloading cargo from the freight vehicle using the loading plate 10 for a cargo vehicle configured as described above, the operator of the loading plate 10 for loading cargo 10 is a controller for operating the loading plate 10 (not shown) The load plate (10) upright with the vehicle in the horizontal state to move the cargo from the container of the freight vehicle to the load plate and then press the lower button, loading plate (10) lift cylinder lowers the load plate to the ground After pressing the open button of the loading plate opening, closing button to make the bottom surface of the loading plate 10 completely in contact with the ground and then move the cargo from the loading plate (10). In addition, when loading the cargo of the ground in the container of the freight vehicle, it proceeds in the reverse order.

도3은 본고안 적재판 개폐용 유압실린더(60)의 단면도로서, 피스톤로드(20)가 유압실린더에 삽입되어 결합된 상태로 피스톤로드(20)와 헤드(30) 사이에는 적재판 개,폐스프링(40)이 실장되고, 피스톤로드(20)와 헤드(30)에 걸쳐 일정거리 관통된 홈에는 실린더쿠션용밸브(50)와 실린더쿠션용스프링(52)이 실장되며 상기 헤드(30)에는 단턱을 형성하여 실린더쿠션용밸브(50)가 이탈되지 않도록 한다. 또한 상기 실린더쿠션용밸브(50)와 대향된 실린더 내벽에는 실린더쿠션용밸브(50)가 삽입되는 포트(A)와 피스톤의 수축, 팽창과 더불어 기름이 유입, 유출되는 포트(B)로 구성되어 있고, 상기 적재판 개,폐스프링이 실장된 실린더에도 기름이 유입, 유출되는 포트(C)로 구성되어있다.3 is a cross-sectional view of the hydraulic cylinder 60 for opening and closing the mounting plate of the present invention, wherein the loading plate is opened and closed between the piston rod 20 and the head 30 while the piston rod 20 is inserted into and coupled to the hydraulic cylinder. A spring 40 is mounted, and a cylinder cushion valve 50 and a cylinder cushion spring 52 are mounted in a groove penetrated a predetermined distance through the piston rod 20 and the head 30. By forming a step, the cylinder cushion valve 50 is not separated. In addition, the cylinder inner wall facing the cylinder cushion valve 50 is composed of a port (A) into which the cylinder cushion valve (50) is inserted and a port (B) through which oil is introduced and discharged along with contraction and expansion of the piston. It is also composed of a port (C) in which oil flows in and out of the cylinder on which the loading plate open and closed springs are mounted.

상기와 같이 구성된 본 고안 적재판 개폐용 유압실린더의 작동에 따른 적재판의 동작상태를 설명하기로 한다.The operation state of the loading plate according to the operation of the hydraulic cylinder for loading and closing the invention plate configured as described above will be described.

도3은 본 고안 적재판 개폐용 유압실린더의 단면도로서 유압실린더내에 기름이 충만한 상태이다. 이 상태는 피스톤로드가 적재판(10)에 작용하여 도1중 적재판(10)이 차량후부에 직립된 상태로 피스톤헤드는 개,폐용 스프링에 압력을 가해 스프링이 압축된 상태이다. 이때 적재판(10)의 작동자는 적재판 콘트롤러(도면 미도시)를 이용하여 적재판(10)을 화물차의 콘테이너와 수평을 유지하기 위해 콘트롤러의 열림버튼을 누르면 포트(A)와 포트(B)는 열리게되고 이를 통해 기름이 유출되면서 피스톤헤드에 압축되었던 개,폐스프링의 탄성작용으로 적재판(10)은 차량후부에서 일정각도 이격된다. 이때 이격되는 각도는 실린더 내부에 실장되는 스프링의 탄성여하에 따라 달라지면 바람직한 이격각도는 45도 정도이다. 이후 적재판(10)의 자체 하중에 의해 적재판(10)은 수평을 이루게 되는데 이때 적재판 개폐용 유압실린더(60)는 도4에 도시된 상태가 된다. 즉, 실린더쿠션용밸브(50)가 이동되어 포트(A)를 막은 상태이다. 이 후 적재판(10) 작동자가 수평을 유지한 적재판(10)을 하강버튼을 누르면 상승실린더가 작동되고 적재판 개폐용 유압실린더(60)는 작동을 멈춘상태가 된다. 이 후 수평상태의 적재판(10)은 상승실린더에 작동에 의해 지면으로 하강하게된다. 적재판(10)이 지면 근처까지 하강하면 작동자는 적재판(10)의 밑면과 지면을 완전히 접촉시키기 위해 적재판 개폐용 유압실린더(60)를 작동시키는 버튼을 누름과 동시에 상승실린더는 동작을 멈추고 적재판 개폐용 유압실린더(60)가 작동되게된다. 이때 적재판(10)은 수평상태에서 적재판(10)과 밑면이 완전히 접촉하게 되는데 본 고안 적재판 개폐용 실린더(60)는 도4에서 도5와 같이 작동된다. 즉, 포트(A)를 막고 있는 실린더쿠션용밸브(50)는 더이상 진행을 멈춘상태이고 피스톤헤드(30)와 피스톤로드(20)는 진행을 계속함으로 인해 실린더쿠션용스프링(52)은 압축되어지고, 실린더쿠션용밸브(50)가 포트(A)를 막고 있으므로 실린더 내부의 기름은 더 이상 포트(A)로는 유출이 안되고 포트(B)로만 유출되게 된다. 도6은 본 고안 적재판 개폐용 유압실린더의 유압회로도로서 본 고안이 적용되어 적재판이 지면에 보다 부드럽게 안착되도록 동작하는 경우 유압의 조절 및 기름의 흐름 상태를 설명하기로 한다. 도6에 도시된 유압실린더 두개(60)(60') 중 본 고안은 하나의 유압실린더(60)에만 적용되고 다른 하나는 일반적인 유압실린더(60')이다. 즉, 본 고안 적재판 개폐용 유압실린더는 하나만 설치하여도 다른 유압실린더의 기름 유출을 동시에 통제할 수 있게 된다. 상기 도3내지 도5에서 설명한 바와같이 유압실린더내부에서 기름이 포트(A)와 포트(B)로 유출되는 경우 즉, 적재판이 수평을 유지하는 상태가 되도록 기름이 유출되는 경우 본 고안이 적용된 유압실린더(60)의 기름은 포트(A)와 포트(B)로 모두 유출되며 포트(A)를 통해 유출되는 기름은 솔레노이드를 거쳐 포트(C)를 통해 반대편 유압실린더 내부로 유입되고 포트(D)를 통해서도 일반유압실린더(60') 내부로 유입되며 유압실린더(60)(60')로 유입되고 남은 잔여 기름은 탱그로 회수된다. 또한 일반 유압실린더(60')에서 유출되는 기름은 압력보상용 속도조절스로틀밸브(90)와 솔레노이드(2)(80)를 통해 탱크로 회수된다. 이 후 실린더 쿠션용 벨브가 포토(A)를 막은 경우 즉, 적재판(10)이 지면에 접근하여 적재판(10)의 밑면을 지면에 완전히 접촉시키기위해 적재판 개폐용 유압실린더(60)를 작동시키는 경우 유압실린더내부(60)의 기름은 포트(A)를 통해서는 유출되지 않고 포트(B)를 통해서만 유출되고 일반유압실린더(60')내부의 기름은 포트(E)를 통해 유출된다. 이때 포트(B)와 포트(E)를 통해 유출되는 기름의 양은 압력보상용 유량속도조절 스로틀밸브(90)로 조절이 가능하며 이 밸브를 통과한 기름은 제2솔레노이드(80)를 통해 탱크로 회수된다. 상기의 압력보상용 유량속도조절 스로틀밸브(90)는 적재판(10)의 작동자나 적재판(10) 제작자가 유출되는 기름양의 조절이 가능하며, 이러한 조절기능으로 인해 적재판이 지면과 완전히 접촉하는 속도의 조절이 가능하다.Figure 3 is a cross-sectional view of the hydraulic cylinder for loading and closing the design of the present invention is a state filled with oil in the hydraulic cylinder. In this state, the piston rod acts on the loading plate 10 so that the loading plate 10 is upright in the rear of the vehicle, and the piston head presses a spring for opening and closing. At this time, the operator of the loading plate 10 uses the loading plate controller (not shown) to press the open button of the controller to keep the loading plate 10 level with the container of the truck (port A) and port (B). The opening plate 10 is separated by a certain angle from the rear of the vehicle by the elastic action of the opening, closing spring that was compressed to the piston head as the oil flows out through it. At this time, if the angle is different depending on the elasticity of the spring mounted inside the cylinder, the preferred separation angle is about 45 degrees. Thereafter, the loading plate 10 is horizontal due to its own load of the loading plate 10. At this time, the loading plate opening and closing hydraulic cylinder 60 is in a state shown in FIG. 4. That is, the cylinder cushion valve 50 is moved to block the port A. Thereafter, when the operator presses the lower button on the loading plate 10 in which the loading plate 10 maintains the level, the up cylinder is operated, and the hydraulic cylinder 60 for opening and closing the loading plate is in a stopped state. After that, the loading plate 10 in the horizontal state is lowered to the ground by the operation of the lift cylinder. When the loading plate 10 descends to near the ground, the operator presses a button for operating the loading plate opening / closing hydraulic cylinder 60 to completely contact the bottom of the loading plate 10 with the ground, and at the same time, the rising cylinder stops operation. The hydraulic cylinder 60 for opening and closing the loading plate is operated. At this time, the loading plate 10 is completely in contact with the loading plate 10 and the bottom surface in a horizontal state. The invention loading plate opening and closing cylinder 60 is operated as shown in FIG. That is, the cylinder cushion valve 50 blocking the port A is no longer in progress and the piston head 30 and the piston rod 20 continue to proceed so that the cylinder cushion spring 52 is compressed. Since the cylinder cushion valve 50 blocks the port A, the oil inside the cylinder no longer flows out to the port A, but flows out only to the port B. 6 is a hydraulic circuit diagram of a hydraulic cylinder for loading and closing a plate of the present invention, in which the present invention is applied, the control of hydraulic pressure and flow of oil will be described when the loading plate is operated to be seated more smoothly on the ground. Of the two hydraulic cylinders 60 and 60 'shown in FIG. 6, the present invention is applied to only one hydraulic cylinder 60, and the other is a general hydraulic cylinder 60'. In other words, even if only one installed the hydraulic plate for opening and closing the plate can control the oil outflow of the other hydraulic cylinder at the same time. 3 to 5, when the oil is leaked to the port (A) and the port (B) in the hydraulic cylinder inside, that is, when the oil flows out so that the loading plate to maintain a horizontal state is applied The oil of the hydraulic cylinder 60 flows out into both the port (A) and the port (B), and the oil flowing out through the port (A) flows into the opposite hydraulic cylinder through the port (C) through the solenoid and the port (D). ) Through the general hydraulic cylinder (60 ') is introduced into the hydraulic cylinder (60, 60') and the remaining oil is recovered to the tank. In addition, the oil flowing out from the general hydraulic cylinder (60 ') is recovered to the tank through the pressure compensation speed control throttle valve 90 and the solenoid (2) (80). Thereafter, when the valve for the cylinder cushion blocks the photo A, that is, the loading plate 10 approaches the ground, the hydraulic cylinder 60 for opening and closing the loading plate is opened in order to completely contact the bottom of the loading plate 10 with the ground. In operation, the oil in the hydraulic cylinder 60 does not flow out through the port A, but only through the port B, and the oil in the general hydraulic cylinder 60 'flows out through the port E. At this time, the amount of oil flowing out through the port (B) and the port (E) can be adjusted by the pressure compensation flow rate control throttle valve (90) and the oil passing through the valve to the tank through the second solenoid (80) It is recovered. The pressure compensation flow rate regulating throttle valve 90 is capable of adjusting the amount of oil spilled by the operator of the loading plate 10 or the producer of the loading plate 10, and the loading plate is completely in contact with the ground due to this adjustment function. The speed of contact is adjustable.

다음으로 지면에 접촉된 접촉판을 상승시켜 차량후부에 직립시킬때 본 고안 적재판개폐용 유압실린더의(60) 작동을 설명하기로 한다.Next, the operation of the hydraulic cylinder 60 for loading and closing the design of the present invention will be described when the contact plate in contact with the ground is raised to stand on the rear of the vehicle.

적재판(10)이 지면에 완전히 접촉된 상태에서 적재판(10)의 작동자가 적재판 개폐용 유압실린더(60)(60')를 작동시키는 버튼을 누르면 도6에 도시된 펌프(95)가 작동되어 유압실린더(60)(60') 내부에 기름이 충진되면서 적재판(10)과 연결된 피스톤로드(20)가 적재판(10)을 밀면서 도1에 도시된 바와 같이 적재판(10)은 지면과 수평상태를 이루게 된다. 이후 작동자는 상승실린더를 작동시켜 적재판(10)을 화물차량의 후부에 일정높이까지 상승시킨다. 이때 적재판 개폐용 유압실린더(60)와 일반 유압실린더(60')는 작동을 멈춘상태이다. 이후 작동자가 적재판 개폐용 유압실린더를 작동시키는 버튼을 누르면 상승실린더는 작동을 멈추고 적재판 개폐용 유압실린더(60)와 일반 유압실린더(60')의 피스톤로드는 적재판(10)을 밀어올려 적재판(10)이 차량후부에 직립하게된다.When the operator of the loading plate 10 presses a button for operating the loading plate opening / closing hydraulic cylinders 60 and 60 'while the loading plate 10 is completely in contact with the ground, the pump 95 shown in FIG. As the piston rod 20 connected to the loading plate 10 pushes the loading plate 10 while oil is filled in the hydraulic cylinders 60 and 60 ', the loading plate 10 is shown in FIG. It is level with the ground. The operator then operates the lift cylinder to raise the loading plate 10 to the rear of the freight vehicle to a certain height. At this time, the loading plate opening and closing hydraulic cylinder 60 and the general hydraulic cylinder 60 'is in a stopped state. Then, when the operator presses a button for operating the hydraulic cylinder for loading plate opening, the lift cylinder stops operation, and the piston rods of the hydraulic cylinder for loading plate opening and closing 60 and the general hydraulic cylinder 60 'push the loading plate 10 upward. The loading plate 10 stands upright at the rear of the vehicle.

상기와 같이 구성되고 작동 되는 본 고안 적재판 개폐용 유압실린더는 다음과 같은 효과가 있다.The hydraulic cylinder for opening and closing the design of the present invention constructed and operated as described above has the following effects.

첫째, 본 고안은 적재판의 밑면과 지면을 완전히 접촉시킬때 유압실린더에서 유출되는 기름양의 조절이 가능함으로써 적재판이 지면에 접촉할 때 보다 부드럽게 지면에 접촉함은 물론 적재판의 속도를 조절할 수 있다.First, the present invention is capable of adjusting the amount of oil flowing out of the hydraulic cylinder when the bottom of the loading plate and the ground completely contact, so that when the loading plate is in contact with the ground, the speed of the loading plate is adjusted as well. Can be.

둘째, 본 고안은 유압실린더에 걸리는 하중을 유압실린더가 충분히 견디므로 내구력이 반 영구적인 유압실린더가 제공된다.Second, the present invention provides a hydraulic cylinder semi-permanent durability because the hydraulic cylinder withstands the load on the hydraulic cylinder sufficiently.

셋째, 본 고안이 적용된 유압실린더 하나로 여러개의 실린더의 속도를 동시에 컨트롤 할 수 있는 장점이 있다.Third, the hydraulic cylinder to which the present invention is applied has the advantage of controlling the speed of several cylinders at the same time.

Claims (2)

화물차량 후부에 장착되어 화물의 적재,하역에 사용되는 화물적재용 적재판의 개,폐 작동에 사용되는 유압실린더에 있어서,In the hydraulic cylinder mounted to the rear of the cargo vehicle used to open and close the cargo loading plate used for loading and unloading the cargo, 유압실린더 내부에 설치되고 화물적재용 적재판을 차량후부에서 일정 각도 개방하는데 사용되는 적재판 개,폐 스프링(40)과The loading plate opening and closing spring 40 is installed inside the hydraulic cylinder and used to open the loading plate for loading cargo at an angle from the rear of the vehicle. 단턱이 형성된 실린더헤드(30)와 피스톤로드(20)를 관통하여 일정한 깊이로 삽입되고, 일단은 기름의 이동로의 개,폐에 사용되며 타단에는 실린더 쿠션용스프링(52)이 내장된 실린더쿠션용밸브(50)와A cylinder cushion is inserted into the cylinder head 30 and the piston rod 20 formed with a stepped to a certain depth, one end is used for opening and closing of the oil movement path, and the other end has a cylinder cushion spring 52 built therein. With valve 50 유압실린더 내부의 일실에서 타실로 기름이 통과되는 제1솔레노이드(70)와A first solenoid 70 through which oil passes from one chamber of the hydraulic cylinder to the other chamber; 유압실린더 내부의 일실에서 탱크로 기름이 통과되는 제2솔레노이드(80)와A second solenoid 80 through which oil passes from the one chamber inside the hydraulic cylinder to the tank; 유압실린더에서 유출되는 기름의 양을 조절하는 압력보상용 유량속도조절 스로틀밸브(90)와Pressure compensation flow rate control throttle valve (90) for controlling the amount of oil flowing out of the hydraulic cylinder and 탱크의 기름을 실린더로 뿜어주는 유압펌프(95)로 구성되어진 것을 특징으로하는 적재판 개폐용 유압실린더.Hydraulic cylinder for loading plate opening and closing, characterized in that consisting of a hydraulic pump (95) for pumping the oil of the tank into the cylinder. 제1항에 있어서 유압실린더는 단동유압실린더인 것을 특징으로 하는 적재판개폐용 유압실린더.The hydraulic cylinder for loading plate opening and closing according to claim 1, wherein the hydraulic cylinder is a single-acting hydraulic cylinder.
KR20-2002-0033133U 2002-11-06 2002-11-06 A oil hydraulic cylinder for opening and shuting a loading plate Expired - Fee Related KR200303613Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200466287Y1 (en) * 2012-07-17 2013-04-08 김선호 Motor assembly having brake unit for hand-standing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200466287Y1 (en) * 2012-07-17 2013-04-08 김선호 Motor assembly having brake unit for hand-standing machine

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