KR101301233B1 - an operation device for the cooling fan in heavy construction equipment - Google Patents

an operation device for the cooling fan in heavy construction equipment Download PDF

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KR101301233B1
KR101301233B1 KR1020060067982A KR20060067982A KR101301233B1 KR 101301233 B1 KR101301233 B1 KR 101301233B1 KR 1020060067982 A KR1020060067982 A KR 1020060067982A KR 20060067982 A KR20060067982 A KR 20060067982A KR 101301233 B1 KR101301233 B1 KR 101301233B1
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South Korea
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cooling fan
shaft
engine
drive shaft
flexible shaft
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KR1020060067982A
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Korean (ko)
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KR20080008563A (en
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김재홍
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볼보 컨스트럭션 이큅먼트 에이비
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/06—Arrangement in connection with cooling of propulsion units with air cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/412—Excavators

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

본 발명은 건설중장비 냉각팬 구동장치에 관한 것이며, 특히 외기가 흡입그릴 및 방열기를 거쳐서 엔진룸 내부로 순환되도록 엔진 회전축에 연결된 냉각팬을 회전시키는 건설중장비 냉각팬 구동장치에 있어서, 상기 냉각팬의 구동축 선단에 기어부를 형성하여 구동축 지지대에 회전가능하게 고정하고, 상기 기어부에 치합되도록 플렉시블 샤프트를 상기 엔진 회전축과 상기 냉각팬 사이에 설치하여 이루어진 것을 특징으로 하는 본 발명에 의하면, 엔진회전축과 냉각팬 구동축을 플렉시블 샤프트로 연결하고 이 플렉시블 샤프트를 통하여 엔진의 동력이 냉각팬에 직접 전달되므로서 냉각팬이나 엔진등의 배치를 쉽게 조정하여 동력전달성능을 유지할 수 있을 뿐 아니라, 플렉시블 샤프트의 몸체 자체적으로 엔진 진동을 흡수 및 완충을 통하여 상쇄함에 따라서 냉각팬에 전파되는 엔진 진동을 크게 감축하여 내구성을 향상시키는 등 그 효과가 매우 뛰어난 장점이 있다.The present invention relates to a heavy equipment cooling fan drive device, in particular, a heavy equipment cooling fan drive device for rotating the cooling fan connected to the engine rotation shaft so that the outside air is circulated into the engine room through the suction grill and radiator, the cooling fan of the According to the present invention, an engine shaft and cooling are provided by forming a gear portion at the tip of the drive shaft to rotatably fix the drive shaft support, and to install the flexible shaft between the engine rotation shaft and the cooling fan so as to be engaged with the gear portion. The fan drive shaft is connected to the flexible shaft, and the power of the engine is directly transmitted to the cooling fan through the flexible shaft, so that the arrangement of the cooling fan or engine can be easily adjusted to maintain power transmission performance. To absorb and dampen engine vibrations Therefore, there is the effect is very excellent advantages such as greatly reduced to improve the durability of the engine vibration propagating to the cooling fan.

냉각팬, 엔진 회전축, 커플러, 플렉시블 샤프트, 냉각팬 구동축 Cooling Fan, Engine Shaft, Coupler, Flexible Shaft, Cooling Fan Drive Shaft

Description

건설중장비 냉각팬 구동장치{an operation device for the cooling fan in heavy construction equipment}{An operation device for the cooling fan in heavy construction equipment}

도 1은 종래 엔진에 직결된 냉각팬의 구동상태를 개략적으로 도시한 도면,1 is a view schematically showing a driving state of a cooling fan directly connected to a conventional engine;

도 2는 종래 유압모터를 이용한 냉각팬의 구동상태를 개략적으로 도시한 도면,2 is a view schematically showing a driving state of a cooling fan using a conventional hydraulic motor,

도 3은 본 발명의 일실시예에 따른 건설중장비 냉각팬 구동장치의 구동상태를 개략적으로 도시한 도면,3 is a view schematically showing a driving state of the construction equipment cooling fan driving apparatus according to an embodiment of the present invention,

도 4는 동실시예에 의한 샤프트 연결부를 확대 도시한 부분 단면도,4 is an enlarged partial cross-sectional view of the shaft connecting portion according to the embodiment;

도 5는 본 발명의 다른 실시예에 따른 샤프트 연결부를 확대 도시한 부분 단면도,5 is an enlarged partial cross-sectional view showing a shaft connecting portion according to another embodiment of the present invention;

* 도면의 주요부분에 대한 주요부호의 설명 *Explanation of the main symbols for the main parts of the drawings

10: 호스 16: 엔진룸10: Hose 16: Engine Room

21: 방열기 22: 냉각팬21: radiator 22: cooling fan

24: 냉각팬 구동축 27: 냉각팬 지지대24: cooling fan drive shaft 27: cooling fan support

28: 슬리브 30: 플렉시블 샤프트28: sleeve 30: flexible shaft

31: 주축 32: 코일31: spindle 32: coil

41: 지지플랜지41: support flange

본 발명은 건설중장비 냉각팬 구동장치에 관한 것이며, 더욱 상세하게는 엔진회전축과 냉각팬을 플렉시블 축체로 연결하고 플렉시블 축체의 치합비율에 따라 냉각팬의 회전이 이루어지도록 하여 엔진의 진동전달을 감축함과 동시에 냉각장치의 배치를 쉽게 조정할 수 있도록 개량된 건설중장비 냉각팬 구동장치에 관한 것이다.The present invention relates to an apparatus for driving a cooling fan for heavy construction equipment, and more particularly, to connect an engine rotation shaft and a cooling fan to a flexible shaft and to reduce the vibration transmission of the engine by allowing the cooling fan to rotate according to the ratio of the coupling of the flexible shaft. In addition, the present invention relates to an improved construction equipment cooling fan drive device to easily adjust the arrangement of the cooling device.

일반적으로 굴삭기나, 크롤러, 로더등 건설중장비는 냉각팬을 이용하여 외기가 엔진 및 엔진룸 내부를 순환하는 냉각계통을 구비하고 있으며, 특히 그러한 냉각계통은 엔진룸 내부가 비교적 협소하기 때문에 엔진과 냉각팬 및 공기순환통로 등의 구성에 따라 그 냉각성능이나 내구성등이 좌우된다.In general, heavy construction equipment such as excavators, crawlers, loaders, etc. have a cooling system in which outside air circulates inside the engine and the engine room using a cooling fan. In particular, such a cooling system has a relatively narrow space inside the engine room. The cooling performance and durability depend on the configuration of the fan and the air circulation passage.

종래 건설중장비 엔진냉각계통에 관하여 첨부된 도면에 개략적으로 나타낸 바, 종래에는 냉각팬의 구동축이 엔진 회전축에 직결되어 회전되는 구동방식(이하 냉각팬 직결구동방식이라 함)을 적용하거나, 냉각팬의 구동축 선단부에 별도로 유압모터를 부착하고 이 유압모터의 동력원으로서 엔진 회전축의 펌핑작용을 통하여 소정의 압유를 유압모터측에 공급함에 따라 냉각팬이 유압모터에 의해 회전되는 유 압 구동방식(이하 냉각팬 유압 구동방식이라 함)을 이용하는 것이 보통이다.As shown schematically in the accompanying drawings of the engine cooling system of the conventional heavy construction equipment, conventionally applies a drive method (hereinafter referred to as a cooling fan direct drive method) in which the drive shaft of the cooling fan is directly connected to the engine rotation shaft, Hydraulic motor is attached to the end of the drive shaft separately, and the hydraulic fan is rotated by the hydraulic motor by supplying a predetermined pressure oil to the hydraulic motor through the pumping action of the engine shaft as a power source of the hydraulic motor. Hydraulically driven).

도 1에 도시한 바와 같이 냉각팬 직결구동방식은 외기가 흡입그릴(13) 및 방열기(1)를 거쳐서 엔진룸(16) 내부로 순환하여 엔진(3)을 냉각시키되, 쉬라우드(4) 내측에 설치된 냉각팬(2)을 회전시키기 위하여 냉각팬 구동축(4)을 엔진(3)의 회전축에 직접 연결한다.As shown in FIG. 1, the direct cooling system of the cooling fan circulates inside the engine room 16 through the suction grill 13 and the radiator 1 to cool the engine 3, but inside the shroud 4. In order to rotate the cooling fan (2) installed in the cooling fan drive shaft (4) directly connected to the rotation shaft of the engine (3).

따라서, 냉각팬(2) 구동을 위한 에너지 효율은 비교적 높으나 엔진 진동이 금속재로 된 축체인 냉각팬 구동축(4)을 통하여 전파되어 냉각팬에 직접 전달되므로서 내구성을 크게 떨어뜨릴 뿐 아니라 엔진룸(16) 내부에서 소음 및 부음이 크게 증가하는 문제점이 있다.Therefore, the energy efficiency for driving the cooling fan 2 is relatively high, but the engine vibration propagates through the cooling fan drive shaft 4, which is a shaft made of metal, and is directly transmitted to the cooling fan, thereby significantly reducing durability, as well as the engine room ( 16) there is a problem that the noise and swelling greatly increases inside.

진동을 저감시키기 위하여 별도로 고무재등을 포함하는 방진수단이 엔진(3) 외측에 설치되기는 하지만 냉각팬 구동축(14)이 진동전파의 매질로 작용하고, 그러한 진동전파의 작용을 흡수 또는 완충할 수 없기 때문에 냉각팬과 엔진 회전축 직결에 따르는 구조적인 문제점은 여전히 존재한다.In order to reduce vibration, a dustproof means including a rubber material or the like is separately installed outside the engine 3, but the cooling fan drive shaft 14 acts as a medium for vibration propagation, and absorbs or buffers the action of the vibration propagation. There is still a structural problem due to the direct connection between the cooling fan and the engine shaft.

또한, 도 2에 도시한 바와 같이 냉각팬 유압구동방식은 유압펌프(9)로 부터 유압모터(8) 사이에 설치된 유압호스(10)를 통하여 공급되는 압유에 의해 유압모터(8)가 냉각팬 구동축(14)을 회전시킨다.In addition, as shown in FIG. 2, in the cooling fan hydraulic drive system, the hydraulic motor 8 is cooled by a pressure oil supplied from the hydraulic pump 9 through the hydraulic hose 10 installed between the hydraulic motors 8. The drive shaft 14 is rotated.

따라서, 엔진(3)과 방열기(1), 쉬라우드(4) 및 냉각팬(2)등을 각각 별도의 공간, 즉 엔진실(12) 및 방열실(11)에 배치할 수 있기 때문에 엔진룸(16)의 공간 효율성을 부분적으로 개선할 수 있으나 유압펌프(9) 및 유압모터(8)에서 에너지 손실이 크게 발생하기 때문에 동력전달손실이 증가하는 문제점이 있다.Therefore, since the engine 3, the radiator 1, the shroud 4, the cooling fan 2, and the like can be arranged in separate spaces, that is, the engine chamber 12 and the heat radiating chamber 11, respectively, the engine compartment Although the space efficiency of 16 may be partially improved, power transmission loss increases due to large energy loss in the hydraulic pump 9 and the hydraulic motor 8.

상기와 같은 문제점을 해결하기 위한 본 발명의 목적은, An object of the present invention for solving the above problems,

엔진회전축과 냉각팬 구동축을 플렉시블 축체로 연결하고 플렉시블 축체의 치합비율에 따라 냉각팬의 회전이 이루어지도록 하므로서 동력전달성능을 유지하면서 엔진의 진동전달을 감축함과 동시에 냉각장치의 배치를 쉽게 조정할 수 있는 건설중장비 냉각팬 구동장치를 제공하는데 있다.By connecting the engine rotation shaft and the cooling fan drive shaft to the flexible shaft and allowing the cooling fan to rotate according to the ratio of the coupling of the flexible shaft, it is possible to easily adjust the arrangement of the cooling system while reducing the vibration transmission of the engine while maintaining power transmission performance. To provide a heavy-duty cooling fan drive system.

전술한 목적을 달성하기 위하여, 본 발명은 In order to achieve the above object,

외기가 흡입그릴 및 방열기를 거쳐서 엔진룸 내부로 순환되도록 엔진 회전축에 연결된 냉각팬을 회전시키는 건설중장비 냉각팬 구동장치에 있어서,In the construction equipment cooling fan drive for rotating the cooling fan connected to the engine shaft so that the outside air is circulated into the engine room via the suction grill and the radiator,

상기 냉각팬의 구동축 선단에 기어부를 형성하여 구동축 지지대에 회전가능하게 고정하고, 상기 기어부에 치합되도록 플렉시블 샤프트를 상기 엔진 회전축과 상기 냉각팬 사이에 설치하여 이루어진 것을 특징으로 한다.Forming a gear portion at the end of the drive shaft of the cooling fan to be fixed to the drive shaft support rotatably, characterized in that the flexible shaft is provided between the engine rotation shaft and the cooling fan to be fitted to the gear portion.

또한, 상기 플렉시블 샤프트에 냉각팬 구동축의 선단과 치합되는 기어부를 구비한 슬리브를 구성하여 이루어진 건설중장비 냉각팬 구동장치를 특징으로 한다.In addition, it characterized in that the heavy-duty construction equipment cooling fan drive device configured by forming a sleeve having a gear portion engaged with the front end of the cooling fan drive shaft on the flexible shaft.

또한, 상기 슬리브의 외측에 커플러를 마련하여 상기 구동축 지지대에 체결시 상기 플렉시블 샤프트의 기어부와 상기 냉각팬 구동축의 기어부가 상호 치합을 이루어 냉각팬을 회전시키는 건설중장비 냉각팬 구동장치를 특징으로 한다.In addition, the heavy duty construction equipment cooling fan driving apparatus for providing a coupler on the outside of the sleeve to engage the gear portion of the flexible shaft and the cooling fan drive shaft when the fastener is fastened to the drive shaft support to rotate the cooling fan. .

또한, 상기 구동축 지지대의 수직면으로 부터 엔진룸 내측으로 연장하여 지지플랜지를 구성하고, 상기 지지플랜지 내측에서 상기 플렉시블 샤프트의 기어부와 상기 냉각팬 구동축의 기어부가 상호 치합되어 냉각팬을 회전시키는 건설중장비 냉각팬 구동장치를 특징으로 한다.In addition, the construction equipment extends from the vertical surface of the drive shaft support to the inside of the engine room to form a support flange, and the gear portion of the flexible shaft and the gear shaft of the cooling fan drive shaft are engaged with each other inside the support flange to rotate the cooling fan. Features a cooling fan drive.

이하, 첨부된 도면을 참조하여 본 발명에 의한 건설중장비 냉각팬 구동장치를 보다 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described in more detail the construction equipment cooling fan driving apparatus according to the present invention.

도 3은 본 발명의 일실시예에 따른 건설중장비 냉각팬 구동장치의 구동상태를 개략적으로 도시한 도면이며, 도 4는 동실시예에 의한 샤프트 연결부를 확대 도시한 부분 단면도, 도 5는 본 발명의 다른 실시예에 따른 샤프트 연결부를 확대 도시한 부분 단면도이다.Figure 3 is a view schematically showing a driving state of the construction equipment cooling fan driving apparatus according to an embodiment of the present invention, Figure 4 is a partial cross-sectional view showing an enlarged shaft connecting portion according to the embodiment, Figure 5 is the present invention A partial cross-sectional view showing an enlarged shaft connection according to another embodiment of the present invention.

본 발명에 의한 건설중장비 냉각팬 구동장치는 엔진 회전축으로 부터 발생하는 동력이 축체를 통하여 전달되면서도 엔진 진동의 전파가 효율적으로 흡수 및 완충될 수 있는 바, Heavy construction equipment cooling fan driving apparatus according to the present invention can be absorbed and buffered effectively the propagation of the engine vibration while the power generated from the engine shaft is transmitted through the shaft,

외기가 흡입그릴(39) 및 방열기(21)를 거쳐서 엔진룸(26) 내부로 순환되도록 엔진(23) 회전축(38)에 연결된 냉각팬(22)을 회전시키는 건설중장비 냉각팬 구동장치에 있어서,In the construction equipment cooling fan drive device for rotating the cooling fan 22 connected to the rotating shaft 38 of the engine 23 so that the outside air is circulated through the suction grill 39 and the radiator 21 into the engine room 26,

상기 냉각팬(22)의 구동축(24) 선단에 기어부(24a)를 형성하여 구동축 지지대(17)에 회전가능하게 고정하고, 상기 기어부(24a)에 치합되도록 플렉시블 샤프트(30)를 상기 엔진 회전축(38)과 상기 냉각팬(22) 사이에 설치하여 구성한다.The gear shaft 24a is formed at the tip of the driving shaft 24 of the cooling fan 22 to be rotatably fixed to the driving shaft support 17, and the flexible shaft 30 is engaged with the gear 24a. It is comprised between the rotating shaft 38 and the said cooling fan 22, and is comprised.

상기 냉각팬 구동축(24)과 상기 지지대(17) 사이에서 회전접촉을 이루는 부위에 부싱(34)을 설치하며, 이때 부싱(34)은 냉각팬(22)의 회전구동시 마찰열 및 마모를 저감시키는 기능을 수행한다.A bushing 34 is installed at a portion of the cooling fan drive shaft 24 and the support 17 that makes a rotational contact, and the bushing 34 reduces frictional heat and wear during rotation of the cooling fan 22. Perform the function.

또한, 도 4에 도시한 바와 같이 본 발명에 의한 건설중장비 냉각팬 구동장치는 상기 플렉시블 샤프트(30)의 일측 선단에 냉각팬 구동축(34)의 선단과 치합되는 기어부(28a)를 구비한 슬리브(28)를 구성하여 이루어진다.In addition, as shown in Figure 4 heavy construction equipment cooling fan drive apparatus according to the present invention is a sleeve having a gear portion (28a) to be engaged with the front end of the cooling fan drive shaft 34 on one end of the flexible shaft (30). It consists of 28.

또한, 본 발명의 실시예에 있어서 상기 슬리브(28)의 외측에 커플러(29)를 마련하여 상기 구동축 지지대(17)에 체결시 상기 플렉시블 샤프트(30)의 기어부(28a)와 상기 냉각팬 구동축(24)의 기어부(24a)가 상호 치합을 이루어 냉각팬(22)을 회전 구동시킨다.In addition, in the exemplary embodiment of the present invention, when the coupler 29 is provided on the outer side of the sleeve 28 and fastened to the drive shaft support 17, the gear part 28a of the flexible shaft 30 and the cooling fan drive shaft The gear part 24a of 24 engages with each other, and drives the cooling fan 22 in rotation.

또한, 상기 구동축 지지대(17)의 수직면(17a)으로 부터 엔진룸(26) 내측으로 연장하여 지지플랜지(41)를 구성하고, 상기 지지플랜지(41) 내측에서 상기 플렉시블 샤프트(30)의 기어부(28a)와 상기 냉각팬 구동축(24)의 기어부(24a)가 상호 치합되어 냉각팬(22)을 회전 구동시킨다.In addition, the support flange 41 extends from the vertical surface 17a of the drive shaft support 17 to the inside of the engine room 26, and the gear portion of the flexible shaft 30 is provided inside the support flange 41. 28a and the gear 24a of the cooling fan drive shaft 24 are engaged with each other to drive the cooling fan 22 in rotation.

본 발명에 의한 건설중장비 냉각팬 구동장치는 상기 플렉시블 샤프트(30)를 엔진 회전축(38)으로 부터 발생하는 동력을 하나의 축체로 전달하되, 몸체(36)의 내부는 상기 슬리브(28)와 일체로 연결되는 주축(31)을 길이방향으로 연장하고, 상기 주축(31)의 외주연상에서 코일(32)이 복수의 층으로 적층을 이루어 구성된다.The heavy equipment cooling fan drive device according to the present invention transfers the power generated from the engine shaft 38 to one shaft, but the inside of the body 36 is integral with the sleeve 28. The main shaft 31 is connected to extend in the longitudinal direction, the coil 32 on the outer periphery of the main shaft 31 is composed of a plurality of layers are laminated.

한편, 본 발명의 다른 실시예에 있어서 냉각팬 구동축(24)과 플렉시블 샤프트(30)을 대략 직교 방향으로 설치할 경우 상기 슬리브(28)의 기어부(28a)와 상기 냉각팬 구동축(24)의 기어부(24a)는 하나의 베벨기어로 치합을 이루게 되며, 이는 비록 엔진 회전축(38)으로 부터 동력전달비를 작게 유지하면서, 엔진룸(26) 내에서 냉각팬(22), 방열실(42)등을 포함하는 냉각장치 및 엔진(23)등의 배치 설계를 용이하게 조정할 수 있다.Meanwhile, in another embodiment of the present invention, when the cooling fan drive shaft 24 and the flexible shaft 30 are installed in substantially orthogonal directions, the gears 28a of the sleeve 28 and the gears of the cooling fan drive shaft 24 are provided. The part 24a is engaged with one bevel gear, which is a cooling fan 22 and a heat dissipation chamber 42 in the engine room 26, while maintaining a small power transmission ratio from the engine shaft 38. It is possible to easily adjust the arrangement design of the cooling device including the back, the engine 23 and the like.

본 발명의 설명에 있어서, 미설명 부호 25는 엔진 외측에 부착된 고무재를 포함하는 방진부재이며, 33은 마모방지링, 35는 고정부재를 나타내는 것이다.In the description of the present invention, reference numeral 25 denotes a dustproof member including a rubber material attached to the outside of the engine, 33 denotes a wear preventing ring, and 35 denotes a fixing member.

이와 같은 본 발명에 의한 건설중장비 냉각팬 구동장치의 작용 효과에 대하여 설명한다.The operation and effect of the construction equipment cooling fan driving apparatus according to the present invention will be described.

본 발명에 의한 건설중장비 냉각팬 구동장치는 플렉시블 샤프트(30)가 엔진 회전축(38)의 동력을 냉각팬 구동축(24)에 직접 전달한다.In the heavy equipment cooling fan drive device according to the present invention, the flexible shaft 30 directly transmits the power of the engine rotation shaft 38 to the cooling fan drive shaft 24.

즉, 커플러(29)를 지지플랜지(41)에 체결함에 의해서 슬리브(28)의 기어부(28a)와 냉각팬 구동축(24a)가 치합되므로서 실질적으로 하나의 동력전달 축체로 작용하여 냉각팬(22)을 회전 구동시키게 된다.That is, by coupling the coupler 29 to the support flange 41, the gear portion 28a of the sleeve 28 and the cooling fan drive shaft 24a are engaged with each other, thus acting as a single power transmission shaft, thereby cooling the fan ( 22) is rotated to drive.

본 발명에 의한 플렉시블 샤프트(30)는 실질적으로 몸체(36) 내부에서 주축(31)을 통하여 동력을 전달하며, 이에 따라 종래 유압식이나 다른 풀리나 밸트식에 대비하여 동력전달효율이 상대적으로 크게 유지된다.The flexible shaft 30 according to the present invention substantially transmits power through the main shaft 31 in the body 36, and accordingly, the power transmission efficiency is relatively large as compared with the conventional hydraulic or other pulleys or belts. .

한편, 엔진(23)에서 발생하는 엔진 진동은 비교적 저주파를 이루면서 플렉시블 샤프트(30)의 몸체(36) 내부에 마련된 주축(31)을 타고 전파된다.On the other hand, the engine vibration generated in the engine 23 is propagated on the main shaft 31 provided inside the body 36 of the flexible shaft 30 while forming a relatively low frequency.

이때, 주축(31)의 외주연상에서 코일(32)이 적층을 이루기 때문에 주축(31)을 매질로 전파되는 엔진 진동은 각각의 적층 사이에서 완충 및 흡수를 통하여 상 쇄되므로서 냉각팬(22)에 전달되는 엔진 진동이 실질적으로 감축된다.At this time, since the coils 32 are laminated on the outer periphery of the main shaft 31, the engine vibration propagated through the main shaft 31 to the medium is canceled through the buffer and the absorption between the respective stacks, thereby cooling fan 22. Engine vibrations transmitted to the engine are substantially reduced.

본 발명에 의한 다른 실시예에 있어서, 본 발명에 의한 플렉시블 샤프트(30)는 냉각팬 구동축(24)과 플렉시블 샤프트(30)을 유연하게 소정 각도로 구부리거나 대략 직교 방향으로 설치하므로서 냉각팬(22)등의 냉각장치나 엔진(23)의 배치를 쉽게 조정할 수 있으며, 이 경우 플렉시블 샤프트(30)의 치합비율에 따라 냉각팬(22)의 회전이 이루어지도록 하므로서 동력전달성능을 유지하면서 엔진의 진동전달을 감축함과 동시에 각각의 구성에 의해 수행된 작용은 실질적으로 동일하므로 생략한다.In another embodiment according to the present invention, the flexible shaft 30 according to the present invention flexibly cools the cooling fan drive shaft 24 and the flexible shaft 30 at a predetermined angle or is installed in an approximately orthogonal direction. It is possible to easily adjust the arrangement of the cooling device or the engine 23, etc. In this case, the rotation of the cooling fan 22 is made in accordance with the ratio of engagement of the flexible shaft 30, while maintaining the power transmission performance while maintaining the vibration of the engine While reducing delivery, the actions performed by each configuration are substantially the same and are therefore omitted.

이상 설명한 바와 같이, 본 발명에 의한 건설중장비 냉각팬 구동장치는 엔진회전축과 냉각팬 구동축을 플렉시블 샤프트로 연결하고 이 플렉시블 샤프트를 통하여 엔진의 동력이 냉각팬에 직접 전달되므로서 냉각팬이나 엔진등의 배치를 쉽게 조정하여 동력전달성능을 유지할 수 있을 뿐 아니라, 플렉시블 샤프트의 몸체 자체적으로 엔진 진동을 흡수 및 완충을 통하여 상쇄함에 따라서 냉각팬에 전파되는 엔진 진동을 크게 감축하여 내구성을 향상시키는 등 그 효과가 매우 뛰어난 장점이 있다.As described above, the heavy equipment cooling fan driving apparatus according to the present invention connects the engine rotation shaft and the cooling fan drive shaft to the flexible shaft, and the power of the engine is directly transmitted to the cooling fan through the flexible shaft, such as a cooling fan or an engine. It is easy to adjust the layout to maintain power transmission performance, and as the body of the flexible shaft itself absorbs and absorbs engine vibrations, the engine vibration propagated to the cooling fan is greatly reduced to improve durability. This has a very outstanding advantage.

Claims (4)

외기가 흡입그릴 및 방열기를 거쳐서 엔진룸 내부로 순환되도록 엔진 회전축에 연결된 냉각팬을 회전시키는 건설중장비 냉각팬 구동장치에 있어서,In the construction equipment cooling fan drive for rotating the cooling fan connected to the engine shaft so that the outside air is circulated into the engine room via the suction grill and the radiator, 상기 냉각팬의 구동축 선단에 기어부를 형성하여 구동축 지지대에 회전가능하게 고정하고,A gear part is formed at the tip of the drive shaft of the cooling fan to be rotatably fixed to the drive shaft support; 상기 기어부에 치합되도록 플렉시블 샤프트를 상기 엔진 회전축과 상기 냉각팬 사이에 설치하되,A flexible shaft is installed between the engine rotation shaft and the cooling fan so as to be engaged with the gear unit, 상기 플렉시블 샤프트의 일측 선단에 상기 냉각팬의 구동축의 선단과 치합되는 기어부를 구비한 슬리브를 포함하여 구성되는 것을 특징으로 하는 건설중장비 냉각팬 구동장치.And a sleeve having a gear part engaged with a front end of a drive shaft of the cooling fan at one end of the flexible shaft. 삭제delete 청구항 1에 있어서,The method according to claim 1, 상기 슬리브의 외측에 커플러를 마련하여 상기 구동축 지지대에 체결시 상기 플렉시블 샤프트의 기어부와 상기 냉각팬 구동축의 기어부가 상호 치합을 이루어 냉각팬이 회전 구동하는 것을 특징으로 하는 건설중장비 냉각팬 구동장치.And a coupler provided on the outside of the sleeve to engage the gear part of the flexible shaft and the cooling fan drive shaft when the coupling part is fastened to the driving shaft support, so that the cooling fan rotates and drives the cooling fan. 청구항 1에 있어서,The method according to claim 1, 상기 구동축 지지대의 수직면으로 부터 엔진룸 내측으로 연장하여 지지플랜지를 구성하고, 상기 지지플랜지 내측에서 상기 플렉시블 샤프트의 기어부와 상기 냉각팬 구동축의 기어부가 상호 치합되어 냉각팬을 회전 구동시키는 것을 특징으로 하는 건설중장비 냉각팬 구동장치.A support flange extends from the vertical surface of the drive shaft support to the inside of the engine room, and the gear part of the flexible shaft and the gear part of the cooling fan drive shaft are engaged with each other to rotate the cooling fan. Heavy equipment cooling fan drive.
KR1020060067982A 2006-07-20 2006-07-20 an operation device for the cooling fan in heavy construction equipment KR101301233B1 (en)

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US4040272A (en) * 1976-01-26 1977-08-09 Eaton Corporation Flexible drive for rotating a fan
EP0057449A1 (en) * 1981-02-02 1982-08-11 Eaton Corporation Flexible shaft fan drive
US4441462A (en) * 1982-07-28 1984-04-10 General Motors Corporation Hybrid mechanical and electrical drive and engine cooling fan arrangement
JP2001336419A (en) * 2000-05-25 2001-12-07 Yanmar Diesel Engine Co Ltd Apparatus for driving cooling fan of swivel cab type working vehicle

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Publication number Priority date Publication date Assignee Title
US4040272A (en) * 1976-01-26 1977-08-09 Eaton Corporation Flexible drive for rotating a fan
EP0057449A1 (en) * 1981-02-02 1982-08-11 Eaton Corporation Flexible shaft fan drive
US4441462A (en) * 1982-07-28 1984-04-10 General Motors Corporation Hybrid mechanical and electrical drive and engine cooling fan arrangement
JP2001336419A (en) * 2000-05-25 2001-12-07 Yanmar Diesel Engine Co Ltd Apparatus for driving cooling fan of swivel cab type working vehicle

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