KR200308829Y1 - A hydraulic system for crane - Google Patents
A hydraulic system for crane Download PDFInfo
- Publication number
- KR200308829Y1 KR200308829Y1 KR20-2002-0037669U KR20020037669U KR200308829Y1 KR 200308829 Y1 KR200308829 Y1 KR 200308829Y1 KR 20020037669 U KR20020037669 U KR 20020037669U KR 200308829 Y1 KR200308829 Y1 KR 200308829Y1
- Authority
- KR
- South Korea
- Prior art keywords
- hydraulic
- hydraulic pressure
- crane
- passage
- supplied
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes 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
- B66C23/54—Cranes 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C2700/00—Cranes
- B66C2700/03—Cranes with arms or jibs; Multiple cranes
- B66C2700/0321—Travelling cranes
- B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
각 구동부의 동작속도가 증진되고 동작이 원할하도록 한 크레인의 유압회로시스템에 관한 것이다. 동력인출장치(110)에 의해서 엔진(100)으로부터 인출된 동력은 유압펌프(120)를 구동하고, 발생된 유압은 제1유압모터(10), 경사실린더(20), 신축실린더(30) 및 제2,3유압모터(40)(50)를 작동시키도록 각 구동부에 공급된다. 유압제어밸브(15)(25)(35)(45)(55)들은 조작신호에 따라 유압의 흐름을 제어하도록 작동된다. 유압펌프로부터 토출되는 유압을 분배하는 유압분배기(130)와, 유압분배기로부터 분배된 제1유압이 경유하는 제1유로(140)와, 유압분배기로부터 분배된 제2유압이 경유하는 제2유로(150)를 구비하고, 제1유로를 통하여 제1유압모터와 신축실린더 및 경사실린더에 유압이 공급되고, 제2유로(150)를 통하여 제2유압모터(40)에 유압이 공급되도록 한다. 또한, 제2유로상에는 윈치가 작동하지 아니할때 제2유로(150)를 통한 유압이 제1유로(140)로 합류하도록 제어하는 방향제어밸브(160)가 구비되어 있다. 이와 같은 유압회로시스템은 부하가 큰 구동부와 부하가 작은 구동부를 분할하여 유압을 공급시킴으로써, 구동부의 구동속도가 증진될 뿐만 아니라 복수의 구동부가 동시에 작동할때 그 구동이 원할해진다.It relates to a hydraulic circuit system of a crane so that the operation speed of each drive unit is enhanced and the operation is smooth. Power drawn out from the engine 100 by the power take-off device 110 drives the hydraulic pump 120, the generated hydraulic pressure is the first hydraulic motor 10, the inclined cylinder 20, the expansion cylinder 30 and It is supplied to each drive unit to operate the second and third hydraulic motors 40 and 50. The hydraulic control valves 15, 25, 35, 45 and 55 are operated to control the flow of hydraulic pressure in accordance with an operation signal. A hydraulic distributor 130 for distributing the hydraulic pressure discharged from the hydraulic pump, a first passage 140 via the first hydraulic pressure distributed from the hydraulic distributor, and a second passage via the second hydraulic pressure distributed from the hydraulic distributor ( 150, the hydraulic pressure is supplied to the first hydraulic motor, the expansion cylinder and the inclined cylinder through the first flow path, and the hydraulic pressure is supplied to the second hydraulic motor 40 through the second flow path 150. In addition, the second flow path is provided with a direction control valve 160 for controlling the hydraulic pressure through the second flow path 150 to join the first flow path 140 when the winch is not operated. The hydraulic circuit system is configured to supply hydraulic pressure by dividing a driving unit having a high load and a driving unit having a low load, so that not only the driving speed of the driving unit is increased but also a plurality of driving units operate at the same time.
Description
본 고안은 크레인의 유압회로시스템에 관한 것으로써, 더 상세하게는 붐대의 경사 및 신축작동과 훅크의 인양을 위한 윈치작동 및 붐대의 선회를 위한 선회작동등 크레인의 각 구동부가 원할하게 작동되고 신속하게 작동되도록 그 구조가 개선된 크레인의 유압회로시스템에 관한 것이다.The present invention relates to a hydraulic circuit system of a crane, and more specifically, each driving unit of the crane operates smoothly and quickly, such as tilting and stretching operation of the boom and winch operation for lifting the hook and turning operation for turning the boom. It relates to a hydraulic circuit system of a crane whose structure has been improved to be operated.
도 1에 도시된 바와 같이, 크레인은 주행이 가능하고 또한 하중체의 인양등 특수작업을 위한 구동부가 마련되어 있다.As shown in FIG. 1, the crane is capable of traveling and is provided with a driving unit for special work such as lifting of a load body.
크레인의 구동부는 제1유압모터(10)에 의해 선회되는 회전블럭(11)과, 이 회전블럭(11)에 회동가능하게 지지되고 내장된 신축실린더(30)에 의해 신축작동되는 붐대(36)와, 이 붐대(36)의 경사작동을 제어하는 경사실린더(20)와, 하중체를 견인하는 훅크(41)(51)를 견인하는 메인윈치(42)와 보조윈치(52)를 구비한다. 이들 윈치(42)(52)들은 도 2에 도시된 바와 같이, 제2,3유압모터(40)(50)에 의해 구동된다.The driving unit of the crane is a rotary block 11 which is pivoted by the first hydraulic motor 10 and a boom 36 which is telescopically operated by the expansion cylinder 30 which is rotatably supported and built in the rotary block 11. And the inclined cylinder 20 for controlling the inclined operation of the boom 36, the main winch 42 and the auxiliary winch 52 for pulling the hooks 41 and 51 for pulling the load body. These winches 42 and 52 are driven by second and third hydraulic motors 40 and 50, as shown in FIG.
이와 같은 크레인의 특수구동부는 엔진으로부터 동력인출장치(PTO;power take off)에 의해 동력을 인출하여 구동원으로서 이용된다.The special driving unit of such a crane draws power from the engine by a power take off (PTO) and is used as a driving source.
즉, 도 2를 참조하면, 동력인출장치(110)에 의해서 엔진(100)으로부터 인출된 동력은 유압펌프(120)를 구동하고, 발생된 유압은 상기 경사실린더(20), 제2,3유압모터(40)(50), 신축실린더(30) 및 제1유압모터(10)를 작동시키도록 각 구동부에 공급된다.That is, referring to FIG. 2, the power drawn out from the engine 100 by the power take-off device 110 drives the hydraulic pump 120, and the generated hydraulic pressure is the inclined cylinder 20, the second and third hydraulic pressures. It is supplied to each drive unit to operate the motors 40 and 50, the expansion cylinder 30 and the first hydraulic motor 10.
이들 각 구동부(10)(20)(30)(40)(50)는 운전조작에 의해서 선택적으로 또는 일부 구동부들이 함께 구동되며, 이때 유압제어밸브(15)(25)(35)(45)(55)들은 조작신호에 따라 유압의 흐름을 제어하도록 작동된다.Each of these driving units 10, 20, 30, 40 and 50 is selectively driven or partly driven together by a driving operation, wherein the hydraulic control valves 15, 25, 35 and 45 ( 55) are operated to control the flow of the hydraulic pressure in accordance with the operation signal.
예컨대, 메인윈치(42)의 구동으로 훅크(41)가 견인되거나, 회전블럭(11)이 선회되면서 붐대(36)가 상방향으로 경사지게 작동될 수 있다.For example, the hook 41 may be towed by the driving of the main winch 42, or the boom 36 may be inclined upward while the rotary block 11 is pivoted.
또한, 신축실린더(30)의 작동으로 붐대(36)가 신축되면서 메인윈치(42)에 의한 훅크(41)가 견인되도록 동시작동이 이루어질 수 있다.In addition, simultaneous operation may be made such that the hook 41 is pulled by the main winch 42 while the boom 36 is stretched by the operation of the expansion cylinder 30.
한편, 상기 구동부들중 회전블럭(11)은 붐대(36)들이 탑재되는 등으로 기본적으로 중량이므로 이를 선회시키는 제1유압모터(10)는 큰부하가 작용하게 되며, 또한 신축실린더(30)와 경사실린더(20)도 큰 부하가 작용하게 된다.On the other hand, the rotation block 11 of the driving unit is basically the weight, such as the boom base 36 is mounted, so that the first hydraulic motor 10 for turning it is a large load, and also the expansion cylinder 30 and Large load also acts on the inclined cylinder 20.
그러나, 메인윈치(42)와 보조윈치(52)가 훅크(41)(51)에 하중체를 견인하지 않은 상태에서 작동하는 경우 제2,3유압모터(40)(50)는 작은 부하가 작용하게 되고, 반대로 하중체를 견인한 상태에서 작동하는 경우에는 큰부하가 작용하게 된다.However, when the main winch 42 and the auxiliary winch 52 operate without towing a load on the hooks 41 and 51, the second and third hydraulic motors 40 and 50 have a small load. On the contrary, when operating in a state where the load is towed, a large load acts.
또한, 두개 이상의 구동부가 동시에 작동할때 그 구동이 원할하지 못하다. 즉, 부하가 큰 신축실린더(30)의 작동으로 붐대(36)가 신축되면서 부하가 상대적으로 작은(하중체를 견인하지 않은 상태에서 작동할때) 메인윈치(42)에 의한 훅크(41)가 견인되도록 동시작동이 이루어질 때, 유압펌프(120)로부터의 유압은 메인윈치(40)를 경유하여 신축실린더(30)에 공급되므로 유압의 공급이 원할치 못하여 동시 작동이 원할하지 못하게 된다. 즉, 작은 압력의 유압으로도 구동이 가능한 구동부와 큰압력이 필요한 구동부가 동시에 작동됨으로써 그 구동이 원할하지 못하게 된다.Also, when two or more drives operate simultaneously, the drive is not desired. That is, as the boom 36 is stretched by the operation of the expansion cylinder 30 having a large load, the hook 41 by the main winch 42 having a relatively small load (when operating without a towing load) is When the simultaneous operation is to be towed, the hydraulic pressure from the hydraulic pump 120 is supplied to the expansion cylinder 30 via the main winch 40, so that the supply of the hydraulic pressure is not desired, the simultaneous operation is not desired. That is, the driving unit that can be driven even with a small pressure hydraulic pressure and the driving unit that requires a large pressure are operated at the same time, so that the driving is not desired.
또한, 상기와 같은 종래의 유압회로시스템을 가지는 크레인은 하나의 유압펌프(120)에 의해서 발생된 유압이 순차적으로 각 구동부에 공급되므로 각 구동부의 동작속도가 느리다.In addition, in the crane having the conventional hydraulic circuit system as described above, since the hydraulic pressure generated by one hydraulic pump 120 is sequentially supplied to each driving unit, the operation speed of each driving unit is slow.
본 고안은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로써, 크레인의 붐대의 신축실린더, 붐대의 경사실린더, 훅크 견인을 위한 메인윈치 및 보조윈치와 회전블럭의 선회를 위한 구동부에 유압을 분배하여 공급함으로써 보다 신속하고 동시작동이 원할하도록 한 크레인의 유압회로시스템을 제공하는 데 그 목적이 있다.The present invention has been devised to solve the above problems, by distributing the hydraulic pressure in the expansion cylinder of the boom of the crane, the inclined cylinder of the boom, the main winch for the hook traction and the drive unit for turning the auxiliary winch and the rotating block The objective is to provide a hydraulic circuit system for a crane that allows for faster and more simultaneous operation by supplying it.
도 1은 크레인을 나타낸 개략도,1 is a schematic view showing a crane,
도 2는 종래 크레인의 유압회로도,2 is a hydraulic circuit diagram of a conventional crane;
도 3은 본 고안 유압회로도이다.3 is a hydraulic circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10...제1유압모터 20...경사실린더10 ... 1st hydraulic motor 20 ... inclined cylinder
30...신축실린더 40,50...제2,3유압모터30. Expansion cylinder 40, 50 ... 2, 3 hydraulic motor
100...엔진 110...동력인출장치100.Engine 110.Power take-off
120...유압펌프 130...유압분배기120 ... hydraulic pump 130 ... hydraulic distributor
140...제1유로 150...제2유로140 ... 1 Euro 150 ... 2 Euro
160...방향제어밸브160 ... directional control valve
상기 목적을 달성하는 본 고안은 제1유압모터에 의해 선회되는 회전블럭과, 이 회전블럭에 회동가능하게 지지되고 신축실린더에 의해 신축작동되는 붐대와, 이 붐대의 경사각도를 제어하는 경사실린더와, 제1훅크를 견인하는 메인윈치가 제2유압모터에 의해 유압구동되도록 유압펌프로부터 각 구동부에 유압을 공급하는 크레인의 유압회로시스템에 있어서,The present invention to achieve the above object is a rotary block pivoted by a first hydraulic motor, a boom that is rotatably supported by the rotary block and telescopically operated by a telescopic cylinder, and an inclined cylinder for controlling the inclination angle of the boom; In the hydraulic circuit system of the crane for supplying hydraulic pressure to each drive unit from the hydraulic pump so that the main winch to pull the first hook is hydraulically driven by the second hydraulic motor,
상기 유압펌프로부터 토출되는 유압을 분배하는 유압분배기와, 상기 유압분배기로부터 분배된 제1유압이 경유하는 제1유로와, 상기 유압분배기로부터 분배된 제2유압이 경유하는 제2유로를 구비하고, 상기 제1유로를 통하여 상기 제1유압모터와 신축실린더 및 경사실린더에 유압이 공급되고, 상기 제2유로를 통하여 상기 제2유압모터에 유압이 공급되도록 된 것을 특징으로 한다.A hydraulic distributor for distributing the hydraulic pressure discharged from the hydraulic pump, a first passage via the first hydraulic pressure distributed from the hydraulic distributor, and a second passage via the second hydraulic pressure distributed from the hydraulic distributor; The hydraulic pressure is supplied to the first hydraulic motor, the expansion cylinder and the inclined cylinder through the first flow passage, and the hydraulic pressure is supplied to the second hydraulic motor through the second flow passage.
또한, 상기 제2유로상에는 상기 윈치구동부가 작동하지 아니할때 상기 제2유로를 통한 유압이 상기 제1유로로 합류하도록 제어하는 방향제어밸브를 더 구비함이 바람직하다.In addition, it is preferable to further include a direction control valve on the second passage to control the hydraulic pressure through the second passage to join the first passage when the winch driving unit is not operated.
또한, 제2훅크를 견인하는 보조윈치와, 이 보조윈치를 구동하는 제3유압모터가 더 구비되고, 상기 제3유압모터는 상기 제2유로를 통한 유압에 의해 구동되도록 구성할 수 있다.In addition, the auxiliary winch for pulling the second hook, and a third hydraulic motor for driving the auxiliary winch is further provided, the third hydraulic motor can be configured to be driven by the hydraulic pressure through the second flow path.
상기 본 고안의 특징에 의하면, 본 고안 시스템은 부하가 큰 구동부와 부하가 작은 구동부를 분할하여 유압을 공급시킴으로써, 구동부의 구동속도가 빠를 뿐만 아니라 복수의 구동부가 동시작동할때 그 구동이 원할해진다.According to the above features of the present invention, the system of the present invention divides the drive unit with a high load and the drive unit with a low load to supply hydraulic pressure, so that the driving speed is not only fast but also when the plurality of drive units operate simultaneously, the drive is desired. .
이하 첨부된 도면을 참조하면서 본 고안에 따른 바람직한 실시예를 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1 및 도 3을 참조하면, 본 고안이 적용되는 크레인은 도 1에 도시된 바와 같은 통상적인 크레인의 주요 구동부를 가진다. 크레인의 구동부는 제1유압모터(10)에 의해 선회되는 회전블럭(11)과, 이 회전블럭(11)에 회동가능하게 지지되고 내장된 신축실린더(30)에 의해 신축작동되는 붐대(36)와, 이 붐대(36)의 경사작동을 제어하는 경사실린더(20)와, 하중체를 견인하는 훅크(41)(51)를 견인하는 메인윈치(42)와 보조윈치(52)를 구비한다. 이들 윈치(42)(52)들은 도 3에 도시된 바와 같이, 제2,3유압모터(40)(50)에 의해 구동된다.1 and 3, the crane to which the present invention is applied has a main drive of a conventional crane as shown in FIG. The driving unit of the crane is a rotary block 11 which is pivoted by the first hydraulic motor 10 and a boom 36 which is telescopically operated by the expansion cylinder 30 which is rotatably supported and built in the rotary block 11. And the inclined cylinder 20 for controlling the inclined operation of the boom 36, the main winch 42 and the auxiliary winch 52 for pulling the hooks 41 and 51 for pulling the load body. These winches 42 and 52 are driven by second and third hydraulic motors 40 and 50, as shown in FIG.
이와 같은 크레인의 특수구동부는 엔진(100)으로부터 동력인출장치(PTO;power take off)(110)에 의해 동력을 인출하여 구동원으로서 이용된다.The special driving unit of such a crane draws power from the engine 100 by a power take off (PTO) 110 and is used as a driving source.
즉, 도 3을 참조하면, 동력인출장치(110)에 의해서 엔진(100)으로부터 인출된 동력은 유압펌프(120)를 구동하고, 발생된 유압은 상기 제1유압모터(10), 경사실린더(20), 신축실린더(30) 및 제2,3유압모터(40)(50)를 작동시키도록 각 구동부에 공급된다.That is, referring to FIG. 3, the power drawn from the engine 100 by the power take-off device 110 drives the hydraulic pump 120, and the generated hydraulic pressure is the first hydraulic motor 10 and the inclined cylinder ( 20), the expansion cylinder 30 and the second and third hydraulic motors 40, 50 are supplied to each drive unit to operate.
이들 각 구동부(10)(20)(30)(40)(50)는 운전조작에 의해서 선택적으로 또는 일부 구동부들이 함께 구동되며, 이때 유압제어밸브(15)(25)(35)(45)(55)들은 조작신호에 따라 유압의 흐름을 제어하도록 작동된다.Each of these driving units 10, 20, 30, 40 and 50 is selectively driven or partly driven together by a driving operation, wherein the hydraulic control valves 15, 25, 35 and 45 ( 55) are operated to control the flow of the hydraulic pressure in accordance with the operation signal.
한편, 본 고안의 특징적 구성으로서, 상기 유압펌프(120)로부터 토출되는 유압을 분배하는 유압분배기(130)와, 상기 유압분배기(130)로부터 분배된 제1유압이 경유하는 제1유로(140)와, 상기 유압분배기(130)로부터 분배된 제2유압이 경유하는 제2유로(150)를 구비하고, 상기 제1유로(140)를 통하여 상기 제1유압모터(10)와 신축실린더(20) 및 경사실린더(30)에 유압이 공급되고, 상기 제2유로(150)를 통하여 상기 제2유압모터(40)에 유압이 공급되도록 한다. 이때 제2유로(150)를 통하여는 보조윈치(52)를 구동하는 제3유압모터(50)에 유압이 공급되도록 함께 설치되어 있다.On the other hand, as a characteristic configuration of the present invention, the hydraulic distributor 130 for distributing the hydraulic pressure discharged from the hydraulic pump 120, and the first passage 140 through the first hydraulic pressure distributed from the hydraulic distributor 130 And a second passage 150 through which the second hydraulic pressure distributed from the hydraulic distributor 130 passes, and the first hydraulic motor 10 and the expansion cylinder 20 through the first passage 140. And hydraulic pressure is supplied to the inclined cylinder 30, and the hydraulic pressure is supplied to the second hydraulic motor 40 through the second flow path 150. At this time, it is installed together so that the hydraulic pressure is supplied to the third hydraulic motor 50 for driving the auxiliary winch 52 through the second passage (150).
또한, 상기 제2유로(150)상에는 상기 윈치(42)(52)가 작동하지 아니할때 상기 제2유로(150)를 통한 유압이 상기 제1유로(140)로 합류하도록 제어하는 방향제어밸브(160)가 구비되어 있다.In addition, the direction control valve for controlling the hydraulic pressure through the second passage 150 to join the first passage 140 when the winch 42, 52 does not operate on the second passage 150 ( 160 is provided.
상기와 같은 본 고안 유압회로시스템은, 각 구동부(10)(20)(30)(40)(50)를 선택적으로 운전조작함에 따라 각 제어밸브(15)(25)(35)(45)(55)의 제어에 의해 유압이 공급되어 작동토록 한다.In the hydraulic circuit system of the present invention as described above, the respective control valves 15, 25, 35, 45 (by selectively operating the driving units 10, 20, 30, 40, 50) ( Under the control of 55), hydraulic pressure is supplied and operated.
예컨대, 큰부하가 요구되는 제1유압모터(10)에 의해 회전블럭(11)을 선회키고자 하는 경우, 제1유로(140)를 통하여 유압이 제어밸브(15)를 통하여 제1유압모터(10)에 공급된다. 이때 제2유로(150)를 통한 유압은 방향제어밸브(160)에 의해 차단되어 제1유로(140)측으로 합류한다.For example, when the rotary block 11 is to be rotated by the first hydraulic motor 10 requiring a large load, the hydraulic pressure is controlled by the first hydraulic motor through the control valve 15 through the first passage 140. 10) is supplied. At this time, the hydraulic pressure through the second passage 150 is blocked by the direction control valve 160 to join the first passage 140 side.
또한, 회전블럭(11)의 선회와 동시에 메인윈치(42)의 구동으로 훅크(41)를 하강시키고자는 경우에는, 유압펌프(120)로부터 발생된 유압은 유압분배기(130)에서 분배되어 제1유로(140)를 통하여 제1유압모터(10)에 공급되고 제2유로(150)를 통하여 제2유압모터(40)에 유압이 공급된다.In addition, when the hook 41 is to be lowered by the rotation of the rotary block 11 and the main winch 42 is driven, the hydraulic pressure generated from the hydraulic pump 120 is distributed by the hydraulic distributor 130 to be first. The hydraulic pressure is supplied to the first hydraulic motor 10 through the oil passage 140 and the second hydraulic motor 40 through the second oil passage 150.
또한, 부하가 큰 구동부 즉, 제1유압모터(10), 경사실린더(20) 및 신축실린더(30)가 함께 구동되고, 또한 메인윈치(42)를 구동하는 제2유압모터(40)가 함께 구동될때에는, 제1유로(140)를 통하여 유압이 공급되어 구동부(10)(20)(30)가 구동되게 되고, 제2유로(150)를 통하여 제2유압모터(40)가 구동된다.In addition, the driving unit with a large load, that is, the first hydraulic motor 10, the tilt cylinder 20 and the expansion cylinder 30 are driven together, and the second hydraulic motor 40 driving the main winch 42 together When driven, the hydraulic pressure is supplied through the first flow passage 140 to drive the driving units 10 and 20 and 30, and the second hydraulic motor 40 is driven through the second flow passage 150.
이와 같이 부하가 큰 구동부(10)(20)(30)들이 제1유로(140)를 통하여 동일 압력으로 공급되는 유압에 의해 작동되므로 동작특성이 양호하게 되고, 또한 제1,2유로(140)(150)를 통하여 분할되어 유압이 공급됨으로써 구동부의 구동속도가 증진된다.As such, the driving unit 10, 20, 30 with a large load is operated by the hydraulic pressure supplied at the same pressure through the first passage 140, so that the operation characteristics are good, and the first and second passages 140 are provided. The driving speed is increased by dividing through 150 to supply hydraulic pressure.
상술한 바와 같은 본 고안은 상기 실시예에 한정되지 아니하고 본원 고안의 정신과 범위를 이탈함이 없이 많은 변형을 가하여 실시될 수 있다.The present invention as described above is not limited to the above embodiment and can be carried out by adding many modifications without departing from the spirit and scope of the present invention.
상술한 바와 같은 본 고안 유압회로시스템은 부하가 큰 구동부와 부하가 작은 구동부를 분할하여 유압을 공급시킴으로써, 구동부의 구동속도가 증진될 뿐만 아니라 복수의 구동부가 동시에 작동할때 그 구동이 원할해진다.In the hydraulic circuit system of the present invention as described above, by supplying hydraulic pressure by dividing the driving unit with a large load and the driving unit with a small load, the driving speed of the driving unit is not only increased, but the driving is desired when a plurality of driving units are operated at the same time.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20-2002-0037669U KR200308829Y1 (en) | 2002-12-17 | 2002-12-17 | A hydraulic system for crane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20-2002-0037669U KR200308829Y1 (en) | 2002-12-17 | 2002-12-17 | A hydraulic system for crane |
Publications (1)
Publication Number | Publication Date |
---|---|
KR200308829Y1 true KR200308829Y1 (en) | 2003-03-26 |
Family
ID=49403780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20-2002-0037669U KR200308829Y1 (en) | 2002-12-17 | 2002-12-17 | A hydraulic system for crane |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR200308829Y1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100812337B1 (en) | 2007-11-19 | 2008-03-10 | 이텍산업 주식회사 | Hydraulic circuit device of many purpose road supervision car |
KR101788986B1 (en) | 2016-08-24 | 2017-11-15 | 미래인더스트리(주) | Method for controlling ratation speed of Self-contained winch for LNG marine vessel |
KR102139090B1 (en) * | 2020-02-17 | 2020-07-29 | 황종선 | crane provided with davit means |
-
2002
- 2002-12-17 KR KR20-2002-0037669U patent/KR200308829Y1/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100812337B1 (en) | 2007-11-19 | 2008-03-10 | 이텍산업 주식회사 | Hydraulic circuit device of many purpose road supervision car |
KR101788986B1 (en) | 2016-08-24 | 2017-11-15 | 미래인더스트리(주) | Method for controlling ratation speed of Self-contained winch for LNG marine vessel |
KR102139090B1 (en) * | 2020-02-17 | 2020-07-29 | 황종선 | crane provided with davit means |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3681833B2 (en) | Hydraulic circuit of excavating and turning work machine | |
US3922855A (en) | Hydraulic circuitry for an excavator | |
KR20060071920A (en) | Apparatus for controlling the boom-swing combined motion of an excavator | |
JPH10204930A (en) | Power machine | |
KR200308829Y1 (en) | A hydraulic system for crane | |
KR200308827Y1 (en) | A hydraulic system for crane | |
JP3751973B2 (en) | Hydraulic circuit of excavating and turning work machine | |
JPS6258033A (en) | Construction equipment | |
JP2007010044A (en) | Hydraulic circuit structure of backhoe | |
JP3731775B2 (en) | Winch equipment for work equipment | |
JP3876294B2 (en) | Boom control device for boom type work vehicle | |
JP4714489B2 (en) | Crane hydraulic circuit | |
US3285432A (en) | Hydraulic system for operating a crane winch | |
JP2816994B2 (en) | Control valve for hydraulic circuit for special vehicles | |
JP2000170709A (en) | Control valve device for hydraulic work machine | |
JP2000327270A (en) | Actuator control circuit of crane truck and its actuator control method | |
KR0185537B1 (en) | Control apparatus of hydraulic construction machine | |
JP2000337505A (en) | Travel speed control system for vehicle | |
JPH09165791A (en) | Hydraulic circuit for working machine | |
KR100547577B1 (en) | Hydraulic circuit complex control device for industrial vehicle_ | |
JPH0439878Y2 (en) | ||
JPH10226498A (en) | Working machine controller | |
JPS5828441B2 (en) | hydraulic circuit | |
KR100520485B1 (en) | Hydraulic system of hydraulic vehicle | |
JP3073150B2 (en) | Crane hydraulic control device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
REGI | Registration of establishment | ||
T201 | Request for technology evaluation of utility model | ||
T701 | Written decision to grant on technology evaluation | ||
FPAY | Annual fee payment |
Payment date: 20040819 Year of fee payment: 3 |
|
LAPS | Lapse due to unpaid annual fee |