KR100450422B1 - Cooling device of a wet disk brake without restriction in an installation space, preventing oil leakage to outside - Google Patents

Cooling device of a wet disk brake without restriction in an installation space, preventing oil leakage to outside Download PDF

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Publication number
KR100450422B1
KR100450422B1 KR1019960078753A KR19960078753A KR100450422B1 KR 100450422 B1 KR100450422 B1 KR 100450422B1 KR 1019960078753 A KR1019960078753 A KR 1019960078753A KR 19960078753 A KR19960078753 A KR 19960078753A KR 100450422 B1 KR100450422 B1 KR 100450422B1
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KR
South Korea
Prior art keywords
oil
drive axle
shaft
brake
axle housing
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KR1019960078753A
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Korean (ko)
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KR19980059413A (en
Inventor
신상호
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대우종합기계 주식회사
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Priority to KR1019960078753A priority Critical patent/KR100450422B1/en
Publication of KR19980059413A publication Critical patent/KR19980059413A/en
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Publication of KR100450422B1 publication Critical patent/KR100450422B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/72—Features relating to cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/22—Friction clutches with axially-movable clutching members
    • F16D13/38—Friction clutches with axially-movable clutching members with flat clutching surfaces, e.g. discs
    • F16D13/52—Clutches with multiple lamellae ; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)
  • General Details Of Gearings (AREA)

Abstract

PURPOSE: A cooling device of a wet disk brake is provided to cause cooling action to a brake and to make the cooling device compact, by situating the wet disk brake to the hub side and installing a forced oil feed unit without using an additional pump. CONSTITUTION: A cooling device of a wet disk brake has a drive axle housing(10) including a second shaft(24) in an inner hollow part. A brake cover(12) and an end cover(15) constituting a space part are assembled to the ends of the drive axle housing. A brake disk braking power transmitted from the second shaft is arranged to the space part. A spiral pump fan(30), pumping cooling oil toward the space part when the second shaft rotates, is formed to the outer periphery of the second shaft. An oil cooling passage and an oil connection passage(36A) providing a supply path of cooling oil supplied from the pump fan are formed between the drive axle housing and the space part. An oil discharge passage(36B) for discharging oil discharged from the space part to an oil storage chamber arranged to the other side of the drive axle housing is formed between the drive axle housing and the space part.

Description

습식 디스크브레이크의 냉각장치Wet disc brakes

본 발명은 예로 산업용 지게차의 드라이브 액슬에 장착된 습식 디스크브레이크의 냉각장치에 관한 것으로, 특히 드라이브 액슬 하우징내의 오일이 스핀들을 구동하는 구동샤프트에 의해 브레이크 디스크로 강제 순환되도록 하여 브레이크의 냉각장치를 콤팩트를 꾀함과 동시에 누유의 가능성을 배제시킨 습식 디스크브레이크의 냉각장치에 관한 것이다.The present invention relates to, for example, a cooling device for a wet disc brake mounted on a drive axle of an industrial forklift, and in particular, the oil in the drive axle housing is forced to circulate to the brake disc by a drive shaft driving the spindle. The present invention relates to a cooling device for a wet disc brake which eliminates the possibility of oil leakage.

지게차와 같이 산업용 차량의 습식 디스크브레이크 장치는 도 1에 도시된 바와 같이 드라이브 액슬 하우징(10)의 측방에 설치된 브레이크 커버(12)내의 브레이크 작동 유압라인에 의해 동작하는 피스톤(14)에 의해 스핀들(20)에 회전지지되는 허브기어(16)측의 브레이크 디스크(18)를 밀어붙여서 제동시키게 되어 있다.The wet disc brake device of an industrial vehicle, such as a forklift truck, is driven by a piston 14 which is operated by a brake actuating hydraulic line in a brake cover 12 installed on the side of the drive axle housing 10 as shown in FIG. The brake disc 18 on the hub gear 16 side, which is rotated and supported by 20, is pushed and braked.

이같이 습식 브레이크 장치에 있어서 브레이크 디스크(18)측에는 제동시 마찰력에 의해 열이 발생하게 되는 데 이를 냉각시키기 위해서 도 1에서와 같이 제 1샤프트(22)와 제 2샤프트(24)가 연결되는 드라이브액슬 하우징(10)의 오일저장실 (10A)내의 오일을 외부에 설치된 오일순환용 펌프(P)로 흡입됨과 동시에 상기 브레이크 커버(12)의 오일냉각통로(12A)로 공급되어 브레이크 디스크(18)를 냉각시킨 후 다시 상기 제2샤프트(24)의 주변에 형성된 리턴통로(12B)로 빠져나와 다시 오일저장실(10A)로 유입되게 되어 있다.As such, in the wet brake device, heat is generated on the brake disc 18 by the frictional force during braking. In order to cool it, the drive axle to which the first shaft 22 and the second shaft 24 are connected as shown in FIG. The oil in the oil storage chamber 10A of the housing 10 is sucked into the oil circulation pump P installed outside, and is supplied to the oil cooling passage 12A of the brake cover 12 to cool the brake disc 18. After returning to the return passage 12B formed around the second shaft 24, the oil is returned to the oil storage chamber 10A.

도면중 미설명 부호 15는 엔드 커버이고, 21은 허브베어링이고, 25는 롤러베어링이다.In the figure, reference numeral 15 is an end cover, 21 is a hub bearing, and 25 is a roller bearing.

이같이 종래에는 습식디스크 브레이크의 위치가 허브측에 위치해 있을 경우 별도의 오일순환용 펌프(P)를 외부의 차량에 장착하여 사용하기 때문에 배관을 연결해야 하는 조립상의 불편함이 있을 뿐만 아니라 설치공간의 제약을 받게 된다.As such, when the position of the wet disc brake is located at the hub side, a separate oil circulating pump (P) is mounted and used in an external vehicle, so that there is not only an inconvenience in assembling the pipe, but also an installation space. You will be constrained.

또한 배관연결이 불량할 경우 누유현상의 발생으로 품질을 떨어뜨리게 되는 등의 단점이 있다.In addition, if the pipe connection is poor, there is a disadvantage that the quality is reduced by the occurrence of leakage.

따라서 본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위한 것으로, 습식 디스크브레이크를 허브측에 위치시키면서도 별도의 펌프를 사용하지 않고 내부에 오일압송수단을 설치하여 브레이크에 냉각작용을 시킴과 동시에 냉각장치의 콤팩트가 가능하도록 한 습식 디스크브레이크의 냉각장치를 제공함에 그 목적이 있다.Therefore, the present invention is to solve the problems of the prior art as described above, while placing the wet disc brake on the hub side without using a separate pump to install the oil pressure means inside to cool the brake and at the same time cooling It is an object of the present invention to provide a cooling device for a wet disc brake that enables the compactness of the device.

상기의 목적을 달성하기 위한 본 고안의 구체적인 수단은, 산업차량의 드라이브액슬에 설치된 습식 브레이크디스크를 냉각시키기 위해서, 브레이크 디스크측의 오일냉각통로와 연통된 오일연결통로를 드라이브 액슬 하우징에 형성함과 동시에 이 드라이브 액슬 하우징에 오일배출통로를 구비하고, 허브기어에 동력을 전달하는 샤프트에 드라이브 액슬 하우징의 오일저장실에 저장된 오일을 상기 샤프트의 회전에 의해 허브기어측으로 강제 압송하여 상기 오일연결통로로 오일을 이송시키는 오일이송수단을 설치하여서 된 것을 특징으로 한다.A specific means of the present invention for achieving the above object is to form an oil connection passage in communication with the oil cooling passage on the brake disc side in the drive axle housing in order to cool the wet brake disc installed in the drive axle of the industrial vehicle; At the same time, the drive axle housing is provided with an oil discharge passage, and the oil stored in the oil storage chamber of the drive axle housing is forced to the hub gear side by the rotation of the shaft to the shaft that transmits power to the hub gear. Characterized in that it is installed by the oil transfer means for transferring the.

도 1은 종래 드라이브 액슬의 단면도 및 오일순환용 펌프의 연결상태도.1 is a cross-sectional view of a conventional drive axle and a state diagram of the oil circulation pump.

도 2는 본 발명의 실시예에 따른 드라이브 액슬의 단면도.2 is a cross-sectional view of a drive axle according to an embodiment of the present invention.

＜도면의 주요 부분에 대한 부호의 설명＞<Description of the code | symbol about the principal part of drawing>

10 : 드라이브 액슬 하우징 10A : 오일저장실10: drive axle housing 10A: oil reservoir

12A : 오일냉각통로 16 : 허브기어12A: Oil Cooling Path 16: Hub Gear

24 : 샤프트 30 : 펌프팬24: shaft 30: pump fan

36B : 오일배출통로36B: oil discharge passage

이하, 첨부된 도면을 참조하여 본 발명의 실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

도 2는 도 1과 동일 또는 동등한 부분은 동일부호를 사용한다.2 uses the same reference numerals as those in FIG. 1.

도 2에 도시된 바와 같이 산업차량의 드라이브 액슬에 설치된 습식 브레이크디스크를 냉각시키기 위해서, 브레이크 디스크(18)측의 오일냉각통로(12A)와 연통된 오일연결통로(36A)를 드라이브 액슬 하우징(10)에 형성함과 동시에 이 드라이브 액슬 하우징(10)에 오일배출통로(36B)를 구비하고, 허브기어(16)에 동력을 전달하는 샤프트(24)에는 드라이브 액슬 하우징(10)의 오일저장실(10A)에 저장된 오일을 상기 샤프트(24)의 회전에 의해 허브기어(16)측으로 강제 압송시켜 상기 오일연결통로(36A)로 오일을 이송시키는 오일이송수단인 나선형 펌프팬(30)이 설치되어 있다.As shown in FIG. 2, in order to cool the wet brake disc installed in the drive axle of the industrial vehicle, the oil connection passage 36A communicating with the oil cooling passage 12A on the brake disc 18 side is driven by the drive axle housing 10. And oil discharge passage 36B in the drive axle housing 10, and the shaft 24 for transmitting power to the hub gear 16 has an oil reservoir 10A of the drive axle housing 10. ) Is a spiral pump fan (30) which is an oil transfer means for forcing the oil stored in the) to the hub gear (16) by the rotation of the shaft 24 to transfer the oil to the oil connection passage (36A).

상기 나선형 펌프팬(30)은 소정의 피치(P)를 갖고 그의 일단은 샤프트(24)에 고정된 고정핀(32)에 연결되어 있고, 그의 타단은 롤러베어링(25)을 고정하기 위한 고정링(34)에 연결되어 있다.The helical pump fan 30 has a predetermined pitch P and one end thereof is connected to a fixing pin 32 fixed to the shaft 24, and the other end thereof has a fixing ring for fixing the roller bearing 25. (34).

이와 같이 구성된 본 실시예의 작동상태를 설명한다.The operating state of this embodiment configured as described above will be described.

제 1샤프트(22)가 회전을 하게 되면 기어연결로 제 2샤프트(24)가 회전을 하게 되고, 동시에 제 2샤프트(24)에 설치된 펌프팬(30)이 같은 방향으로 회전을 하게 된다.When the first shaft 22 is rotated, the second shaft 24 is rotated by the gear connection, and at the same time, the pump fan 30 installed in the second shaft 24 rotates in the same direction.

따라서 드라이브액슬 하우징(10)의 오일저장실(10A)에 저장된 오일은 펌프 팬(30)의 압송력에 의해 이끌려 허브기어(16)측으로 이송하여 결국 오일연결통로 (36A)로 유입돼서 오일냉각통로(12A)로 공급된다.Therefore, the oil stored in the oil storage chamber 10A of the drive axle housing 10 is drawn to the hub gear 16 by the pressure of the pump fan 30 and finally flows into the oil connection passage 36A and the oil cooling passage ( 12A).

오일냉각통로(12A)를 거친 오일은 브레이크디스크(18)를 냉각시키고 회전지지부분 즉, 롤러베어링(21)을 거쳐서 오일배출통로(36B)로 빠져나가 다시 오일저장실(10A)로 회수되게 된다.The oil that has passed through the oil cooling passage 12A cools the brake disc 18 and exits the oil discharge passage 36B through the rotation support portion, that is, the roller bearing 21, and is recovered to the oil storage chamber 10A.

여기서 브레이크디스크(18)에 공급되는 냉각오일은 샤프트(24)의 회전수에 비례하여 오일 이송량을 증대시키는 펌프팬(30)에 의해 가능하게 된다.The cooling oil supplied to the brake disc 18 is made possible by the pump fan 30 which increases the oil feed amount in proportion to the rotational speed of the shaft 24.

그리고 상기 펌프팬(30)의 피치(P)를 달리함에 따라 샤프트(30)의 1회전당 오일 이송량을 증감시킬 수 있다.And as the pitch (P) of the pump fan 30 is changed, it is possible to increase or decrease the amount of oil transported per revolution of the shaft 30.

이같이 브레이크 디스크의 냉각장치를 드라이브 액슬 내부에 설치하여 구조가 간단하여 콤팩트가 가능하다.In this way, the cooling device of the brake disc is installed inside the drive axle, so the structure is simple and compact.

또한 종래와 같이 외부에 펌프를 설치하고 또 배관을 해야 하는 작업이 불필요함으로 설치공간의 제약을 받지 않을 뿐 아니라 누유현상을 근본적으로 방지할 수 있다.In addition, it is not limited to the installation space because the work to install the pump and the piping to the outside as in the prior art, it is possible to fundamentally prevent the leakage phenomenon.

상술한 바와 같이 본 발명에 의하면 디스크 브레이크측과 연통된 유로를 형성하고, 이 유로로 허브기어에 동력을 전달하는 샤프트에 설치된 오일이송수단을 통하여 오일저장실에 저장된 오일을 강제 순환케 함으로 구성이 간단하여 콤팩트가 가능하고, 외부로의 누유현상을 방지할 수 있고 더불어 설치공간의 제약을 받지 않는 장점이 있다.As described above, according to the present invention, a flow path communicating with the disc brake side is formed, and the configuration is simplified by forcibly circulating oil stored in the oil storage chamber through an oil transfer means installed in a shaft that transmits power to the hub gear. It can be compact, can prevent the leakage of oil to the outside and there is an advantage that is not limited by the installation space.

Claims (1)

내부 중공부에 회전되는 제2샤프트(24)를 포함하는 드라이브 액슬 하우징(21)과, 상기 하우징(10)의 양단에는 공간부를 형성하는 엔드커버(15) 및 브레이크 커버(12)가 조립되고, 상기 공간부에는 샤프트(24)로부터 전달되는 동력을 제동하는 브레이크디스크(18)를 구비한 습식 디스크브레이크 장치에 있어서,A drive axle housing 21 including a second shaft 24 rotated in the inner hollow part, an end cover 15 and a brake cover 12 forming spaces at both ends of the housing 10 are assembled, In the space portion of the wet disc brake device having a brake disc 18 for braking power transmitted from the shaft 24, 상기 제2샤프트(24)의 외주에는 제2샤프트(24)의 회전시 상기 공간부 방향으로 냉각요 오일을 펌핑하는 나선형 펌프팬(30)을 형성하고,On the outer circumference of the second shaft 24 is formed a spiral pump fan 30 for pumping the coolant oil in the direction of the space when the second shaft 24 rotates, 상기 드라이브 액슬 하우징(10)과 상기 공간부 사이에는 펌프팬(30)으로부터 공급되는 냉각오일의 공급로를 제공하는 오일냉각통로(12A) 및 오일연결통로(36A)가 형성됨과 동시에, 상기 공간부에서 배출되는 오일을 드라이브 액슬 하우징(10)의 타측에 구비된 오일저장실(10A)로 배출되게 하는 오일배출통로(36B)가 형성된 것을 특징으로 하는 습식 디스크브레이크의 냉각장치.An oil cooling passage 12A and an oil connection passage 36A are provided between the drive axle housing 10 and the space portion to provide a supply path of cooling oil supplied from the pump fan 30. Cooling apparatus for a wet disc brake, characterized in that the oil discharge passage (36B) for discharging the oil discharged from the discharge to the oil storage chamber (10A) provided on the other side of the drive axle housing (10).
KR1019960078753A 1996-12-31 1996-12-31 Cooling device of a wet disk brake without restriction in an installation space, preventing oil leakage to outside KR100450422B1 (en)

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KR1019960078753A KR100450422B1 (en) 1996-12-31 1996-12-31 Cooling device of a wet disk brake without restriction in an installation space, preventing oil leakage to outside

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KR1019960078753A KR100450422B1 (en) 1996-12-31 1996-12-31 Cooling device of a wet disk brake without restriction in an installation space, preventing oil leakage to outside

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KR100450422B1 true KR100450422B1 (en) 2004-12-04

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KR102038159B1 (en) 2014-10-31 2019-10-29 주식회사 두산 Cooling system for brake device of forklift
JP6704994B2 (en) 2015-12-08 2020-06-03 ドゥーサン コーポレイション Cooling system for brake equipment of forklift vehicles

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