KR101196066B1 - Gear Pump - Google Patents

Gear Pump Download PDF

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Publication number
KR101196066B1
KR101196066B1 KR1020100004392A KR20100004392A KR101196066B1 KR 101196066 B1 KR101196066 B1 KR 101196066B1 KR 1020100004392 A KR1020100004392 A KR 1020100004392A KR 20100004392 A KR20100004392 A KR 20100004392A KR 101196066 B1 KR101196066 B1 KR 101196066B1
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KR
South Korea
Prior art keywords
bushing
drive shaft
cover
driven shaft
gear
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KR1020100004392A
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Korean (ko)
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KR20110084699A (en
Inventor
황종원
정규화
안창규
김정훈
김동환
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황종원
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Priority to KR1020100004392A priority Critical patent/KR101196066B1/en
Publication of KR20110084699A publication Critical patent/KR20110084699A/en
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Publication of KR101196066B1 publication Critical patent/KR101196066B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0088—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

본 발명은 기어펌프에 대한 것으로서, 더욱 상세하게는 구동축과 종동축에 장착된 부싱부로 윤활유가 흐르도록 유로구멍을 설계하여 부싱의 온도가 상승하는 것을 방지하여 부싱이 소착되는 것을 예방할 수 있는 기어펌프에 대한 것이다.
본 발명에 따른 기어펌프는 구동축과, 종동축과, 구동축부싱과, 종동축부싱과, 하우징과, 제1커버와, 제2커버를 포함한다. 상기 구동축은 제1기어를 구비한다. 상기 종동축은 상기 제1기어와 이물림을 하는 제2기어를 구비한다. 상기 구동축부싱은 상기 구동축의 일측과 타측에 장착된다. 상기 종동축부싱은 상기 종동축의 일측과 타측에 장착된다. 상기 하우징은 상기 제1기어 및 상기 제2기어를 수용한다. 상기 제1커버는 상기 구동축과 상기 종동축의 일측을 감싼다. 그리고 상기 제1커버에는 상기 구동축의 일측에 장착된 구동축부싱과 상기 종동축의 일측에 장착된 종동축부싱으로 윤활유가 흐르도록 제1유로구멍이 형성된다. 상기 제2커버는 상기 구동축과 상기 종동축의 타측을 감싼다. 그리고 상기 제2커버에는 상기 제2커버는 상기 구동축의 타측에 장착된 구동축부싱과 상기 종동축의 타측에 장착된 종동축부싱으로 윤활유가 흐르도록 제2유로구멍이 형성된다.
본 발명에 의하면 부싱부로 윤활유가 공급되도록 커버에 유로구멍을 설계함으로써 부싱부의 온도상승을 방지하여 부싱부가 소착되는 것을 방지할 수 있다.The present invention relates to a gear pump, and more particularly, a gear pump that can prevent the bushing from squeezing by designing a flow path for lubricating oil to flow to a bushing mounted to a driving shaft and a driven shaft to prevent the temperature of the bushing from rising. It is about.
The gear pump according to the present invention includes a drive shaft, a driven shaft, a drive shaft bushing, a driven shaft bushing, a housing, a first cover, and a second cover. The drive shaft has a first gear. The driven shaft includes a second gear that engages with the first gear. The drive shaft bushing is mounted on one side and the other side of the drive shaft. The driven shaft bushing is mounted on one side and the other side of the driven shaft. The housing accommodates the first gear and the second gear. The first cover surrounds one side of the drive shaft and the driven shaft. A first flow path hole is formed in the first cover so that the lubricant flows through the drive shaft bushing mounted on one side of the drive shaft and the driven shaft bushing mounted on one side of the driven shaft. The second cover surrounds the other side of the drive shaft and the driven shaft. The second cover has a second channel hole formed in the second cover such that the lubricating oil flows through the drive shaft bushing mounted on the other side of the drive shaft and the driven shaft bushing mounted on the other side of the driven shaft.
According to the present invention, by designing a passage hole in the cover so that lubricant is supplied to the bushing part, the temperature rise of the bushing part can be prevented and the bushing part can be prevented from squeezing.

Description

기어펌프{Gear Pump}Gear Pump

본 발명은 기어펌프에 대한 것으로서, 더욱 상세하게는 구동축과 종동축에 장착된 부싱부로 윤활유가 흐르도록 유로구멍을 설계하여 부싱의 온도가 상승하는 것을 방지하여 부싱이 소착되는 것을 예방할 수 있는 기어펌프에 대한 것이다.The present invention relates to a gear pump, and more particularly, a gear pump that can prevent the bushing from squeezing by designing a flow path for lubricating oil to flow to a bushing mounted to a driving shaft and a driven shaft to prevent the temperature of the bushing from rising. It is about.

도 2는 종래의 기어펌프의 개념도이다. 도 2에 도시된 기어펌프는 구동축(10)과, 종동축(14)과, 구동축부싱(17)과, 종동축부싱(19)과, 하우징(21)과, 제1커버(23)와, 제2커버(27)를 포함한다.2 is a conceptual diagram of a conventional gear pump. The gear pump shown in FIG. 2 includes a drive shaft 10, a driven shaft 14, a drive shaft bushing 17, a driven shaft bushing 19, a housing 21, a first cover 23, The second cover 27 is included.

구동축(10)은 제1기어(11)를 구비하며,종동축(14)은 제2기어(15)를 구비한다. 제1기어(11)와 제2기어(15)는 이물림을 한다. The drive shaft 10 includes a first gear 11, and the driven shaft 14 includes a second gear 15. The first gear 11 and the second gear 15 bite.

구동축부싱(17)은 제1구동축부싱(17a)과, 제2구동축부싱(17b)을 구비하며, 제1구동축부싱(17a)는 구동축(10)의 일측에 장착되며, 제2구동축부싱(17b)는 구동축(10)의 타측에 장착된다.The drive shaft bushing 17 includes a first drive shaft bushing 17a and a second drive shaft bushing 17b, and the first drive shaft bushing 17a is mounted on one side of the drive shaft 10 and the second drive shaft bushing 17b. ) Is mounted on the other side of the drive shaft (10).

종동축부싱(19)는 제1종동축부싱(19a)과, 제2종동축부싱(19b)을 구비하며, 제1종동축부싱(19a)은 종동축(14)의 일측에 장착되며, 제2종동축부싱(19b)는 종동축(14)의 타측에 장착된다.The driven shaft bushing 19 includes a first driven shaft bushing 19a and a second driven shaft bushing 19b, and the first driven shaft bushing 19a is mounted on one side of the driven shaft 14. The second driven shaft bushing 19b is mounted on the other side of the driven shaft 14.

하우징(21)은 내부에 제1기어(11) 및 제2기어(15)를 수용한다. 제1커버(23)는 구동축(10)의 일측과 종동축(14)의 일측을 감싼다. 제1커버(23)와 부싱부(17a, 19a)의 사이에는 틈이 있어 부싱부(17a, 19a)와 제1커버(23)의 마찰을 감소시키기 위하여 상기 틈으로 윤활유가 공급된다. 제2커버(27)는 구동축의 타측과 종동축(14)의 타측을 감싼다. 제2커버(27)와 부싱부(17b, 19b)의 사이에는 틈이 있어 부싱부(17b, 19b)와 제2커버(27)와 제2커버(27)의 마찰을 감소시키기 위하여 상기 틈으로 윤활유가 공급된다.The housing 21 accommodates the first gear 11 and the second gear 15 therein. The first cover 23 surrounds one side of the drive shaft 10 and one side of the driven shaft 14. Since there is a gap between the first cover 23 and the bushings 17a and 19a, lubricant is supplied to the gap to reduce friction between the bushings 17a and 19a and the first cover 23. The second cover 27 surrounds the other side of the drive shaft and the other side of the driven shaft 14. There is a gap between the second cover 27 and the bushings 17b and 19b, so as to reduce the friction between the bushings 17b and 19b and the second cover 27 and the second cover 27. Lubricant is supplied.

구동축(10)이 회전하면서 제1기어(11)와 제2기어(15)를 사용하여 유체를 펌핑한다.As the drive shaft 10 rotates, the fluid is pumped using the first gear 11 and the second gear 15.

도 2에 도시된 종래의 기어펌프의 경우 부싱부(17, 19)와 커버부(23, 27) 사이의 마찰을 작게 하기 위하여 부싱부(17, 19)와 커버부(23, 27) 사이의 틈으로 윤활유가 흐른다. 그러나 기어펌프의 작동시 구동축(10)과 종동축(14)에 편심하중이 작용하고, 기어펌프가 장시간 지속적으로 운전되면 편심하중으로 인하여 유활유의 온도가 상승하고 부싱부(17, 19)의 면압이 상승한다. 이로 인해 부싱(17, 19)가 소착되는 문제점이 발생하였다.In the case of the conventional gear pump shown in FIG. 2, the space between the bushings 17 and 19 and the cover parts 23 and 27 is reduced in order to reduce the friction between the bushing parts 17 and 19 and the cover parts 23 and 27. Lubricant flows through the gap. However, when the gear pump operates, the eccentric load acts on the drive shaft 10 and the driven shaft 14, and when the gear pump is continuously operated for a long time, the temperature of the lubricating oil rises due to the eccentric load and the surface pressure of the bushings 17 and 19 is increased. It rises. This caused a problem that the bushings 17 and 19 are sintered.

또한, 종래의 기어펌프의 경우 구동축(10)과 종동축(14)의 편심하중으로 인하여 기어(11, 15)가 유체의 흡입측에서 하우징(21)의 내벽을 깍아먹는 현상이 발생한다. 하우징(21)의 내벽을 깍아서 발생하는 이물질이 부싱부(17, 19)와 커버부(23, 27) 사이의 틈새로 유입되어 윤활유의 순환을 방해하므로 윤활유의 온도가 과열되는 문제점이 발생하였다.In addition, in the conventional gear pump, a phenomenon in which the gears 11 and 15 bite the inner wall of the housing 21 at the suction side of the fluid due to the eccentric load of the drive shaft 10 and the driven shaft 14 occurs. Foreign matter generated by cutting the inner wall of the housing 21 is introduced into the gap between the bushing parts 17 and 19 and the cover parts 23 and 27 to interfere with the circulation of the lubricating oil, thereby causing a problem that the temperature of the lubricating oil is overheated.

본 발명은 상기의 문제점을 해결하기 위한 것이다. 본 발명은 커버부(23, 27)에 유로구멍을 설계하여 부싱부(17, 19)의 온도가 상승하는 것을 방지하여 부싱부(17, 19)가 소착되는 것을 방지할 수 있는 기어펌프를 제공하는 것을 목적으로 한다.The present invention is intended to solve the above problems. The present invention provides a gear pump that can prevent the rise of the bushing parts 17 and 19 by preventing flow of the bushing parts 17 and 19 by designing flow path holes in the cover parts 23 and 27. It aims to do it.

또한, 본 발명은 이물질이 부싱부(17, 19)와 커버부(23, 27) 사이의 틈새로 유입되더라도 윤활유를 원활하기 순환시킬 수 있는 기어펌프를 제공하는 것을 목적으로 한다.In addition, an object of the present invention is to provide a gear pump capable of smoothly circulating lubricating oil even if foreign matter is introduced into the gap between the bushings (17, 19) and the cover (23, 27).

본 발명에 따른 기어펌프는 구동축과, 종동축과, 구동축부싱과, 종동축부싱과, 하우징과, 제1커버와, 제2커버를 포함한다. 상기 구동축은 제1기어를 구비한다. 상기 종동축은 상기 제1기어와 이물림을 하는 제2기어를 구비한다. 상기 구동축부싱은 상기 구동축의 일측과 타측에 장착된다. 상기 종동축부싱은 상기 종동축의 일측과 타측에 장착된다. 상기 하우징은 상기 제1기어 및 상기 제2기어를 수용한다. 상기 제1커버는 상기 구동축과 상기 종동축의 일측을 감싼다. 그리고 상기 제1커버에는 상기 구동축의 일측에 장착된 구동축부싱과 상기 종동축의 일측에 장착된 종동축부싱으로 윤활유가 흐르도록 제1유로구멍이 형성된다. 상기 제2커버는 상기 구동축과 상기 종동축의 타측을 감싼다. 그리고 상기 제2커버에는 상기 제2커버는 상기 구동축의 타측에 장착된 구동축부싱과 상기 종동축의 타측에 장착된 종동축부싱으로 윤활유가 흐르도록 제2유로구멍이 형성된다.The gear pump according to the present invention includes a drive shaft, a driven shaft, a drive shaft bushing, a driven shaft bushing, a housing, a first cover, and a second cover. The drive shaft has a first gear. The driven shaft includes a second gear that engages with the first gear. The drive shaft bushing is mounted on one side and the other side of the drive shaft. The driven shaft bushing is mounted on one side and the other side of the driven shaft. The housing accommodates the first gear and the second gear. The first cover surrounds one side of the drive shaft and the driven shaft. A first flow path hole is formed in the first cover so that the lubricant flows through the drive shaft bushing mounted on one side of the drive shaft and the driven shaft bushing mounted on one side of the driven shaft. The second cover surrounds the other side of the drive shaft and the driven shaft. The second cover has a second channel hole formed in the second cover such that the lubricating oil flows through the drive shaft bushing mounted on the other side of the drive shaft and the driven shaft bushing mounted on the other side of the driven shaft.

또한, 상기의 기어펌프에 있어서, 상기 제1유로구멍은 상기 구동축의 일측에 장착된 상기 구동축부싱의 양측면으로 윤활유가 흐르도록 형성되고, 상기 구동축의 일측에 장착된 상기 종동축부싱의 양측면으로 윤활유가 흐르도록 형성된 것이 바람직하다. 이 경우 상기 제2유로구멍은 상기 구동축의 타측에 장착된 상기 구동축부싱의 양측면으로 윤활유가 흐르도록 형성되고, 상기 구동축의 타측에 장착된 상기 종동축부싱의 양측면으로 윤활유가 흐르도록 형성된다.Further, in the gear pump, the first flow path hole is formed so that lubricating oil flows to both side surfaces of the drive shaft bushing mounted on one side of the drive shaft, and lubricating oil on both sides of the driven shaft bushing mounted on one side of the drive shaft. It is preferable to form so that it flows. In this case, the second flow path hole is formed such that lubricating oil flows to both side surfaces of the drive shaft bushing mounted on the other side of the drive shaft, and lubricating oil flows to both side surfaces of the driven shaft bushing mounted on the other side of the drive shaft.

본 발명에 의하면 부싱부로 윤활유가 공급되도록 커버에 유로구멍을 설계함으로써 부싱부의 온도상승을 방지하여 부싱부가 소착되는 것을 방지할 수 있다.According to the present invention, by designing a passage hole in the cover so that lubricant is supplied to the bushing part, the temperature rise of the bushing part can be prevented and the bushing part can be prevented from squeezing.

또한 본 발명은 부싱부가 소착되는 것을 방지함으로써 기어펌프의 내구성을 증대시킬 수 있다.In addition, the present invention can increase the durability of the gear pump by preventing the bushing portion is sintered.

또한 본 발명은 부싱부와 커버부 사이의 틈새로 윤활유가 원활히 순환되게 함으로써 이물질이 유입되더라도 부싱부와 커버부 사이의 틈새가 막히는 것을 방지할 수 있다.In addition, the present invention can prevent the clearance between the bushing portion and the cover portion even if foreign matter flows by lubricating oil smoothly circulated to the gap between the bushing portion and the cover portion.

도 1은 본 발명에 따른 기어펌프의 일 실시예의 단면도,
도 2는 종래의 기어펌프의 일 실시예의 단면도이다.1 is a cross-sectional view of one embodiment of a gear pump according to the present invention,
2 is a cross-sectional view of one embodiment of a conventional gear pump.

도 1은 본 발명에 따른 기어펌프의 일 실시예의 단면도이다. 도 1을 참조하여 본 발명에 따른 기어펌프의 일 실시예를 설명한다.1 is a cross-sectional view of one embodiment of a gear pump according to the present invention. An embodiment of a gear pump according to the present invention will be described with reference to FIG. 1.

도 1에 도시된 기어펌프는 도 2에 도시된 실시예에서 제1커버(23)에 제1유로구멍(24)이 형성되고, 제2커버(27)에 제2유로구멍(28)이 형성된다. 나머지 구성요소는 도 2에 도시된 실시예와 동일하다.In the gear pump illustrated in FIG. 1, in the embodiment illustrated in FIG. 2, a first flow path hole 24 is formed in the first cover 23, and a second flow path hole 28 is formed in the second cover 27. do. The remaining components are the same as the embodiment shown in FIG.

제1유로구멍(24)은 구동축(10)의 일측에 장착된 제1구동축부싱(17a)과 종동축(14)의 일측에 장착된 제1종동축부싱(19a)으로 윤활유가 흐르도록 제1커버(23)에 형성된다. 더욱 상세하게 설명하면 제1구동축부싱(17a)의 양 측면으로 윤활유가 흘러서 제1구동축부싱(17a)과 제1커버(23) 사이의 틈새로 윤활유가 흘러가도록 제1유로구멍(24a, 24b)이 형성된다. 그리고 제1종동축부싱(19a)의 양 측면으로 윤활유가 흘러서 제1종동축부싱(19a)과 제1커버(23) 사이의 틈새로 윤활유가 흘러가도록 제1유로구멍(24b, 24c)이 형성된다. 따라서 종래에는 제1구동축부싱(17a) 및 제1종동축부싱(19a)와 제1커버(23) 사이의 틈새 사이로만 윤활유가 흘러서 윤활유의 흐름이 원활하지 아니하였다. 그러나 도 1에 도시된 실시예의 경우 제1유로구멍(24)이 형성되어 윤활유의 흐름을 원활히 하여 부싱부(17a, 19a)에 면압이 발생하더라도 온도가 상승하는 것을 방지할 수 있다. 그리고 부싱부(17a, 19a)와 제1커버(23) 사이의 틈새로 이물질이 유입되더라도 윤활유의 흐름이 원활하여 이물질을 흘려 보낼 수 있다.The first flow path hole 24 is a first drive shaft bushing (17a) mounted on one side of the drive shaft 10 and the first driven shaft bushing (19a) mounted on one side of the driven shaft (14) so that the lubricating oil flows It is formed in the cover 23. More specifically, the first flow path holes 24a and 24b so that the lubricant flows to both sides of the first drive shaft bushing 17a so that the lubricant flows through the gap between the first drive shaft bushing 17a and the first cover 23. Is formed. In addition, the first flow path holes 24b and 24c are formed such that the lubricant flows to both side surfaces of the first driven shaft bushing 19a so that the lubricant flows through the gap between the first driven shaft bushing 19a and the first cover 23. do. Therefore, in the related art, lubricating oil flows only between the gap between the first driving shaft bushing 17a and the first driven shaft bushing 19a and the first cover 23, so that the lubricating oil does not flow smoothly. However, in the exemplary embodiment shown in FIG. 1, the first channel hole 24 is formed to smooth the flow of lubricating oil, thereby preventing the temperature from rising even when a surface pressure occurs in the bushings 17a and 19a. In addition, even if foreign matter is introduced into the gap between the bushings 17a and 19a and the first cover 23, the lubricating oil flows smoothly, so that the foreign matter may flow.

제2유로구멍(28)은 구동축(10)의 타측에 장착된 제2구동축부싱(17b)과 종동축(14)의 타측에 장착된 제2종동축부싱(19b)으로 윤활유가 흐르도록 제2커버(27)에 형성된다. 더욱 상세하게 설명하면 제2구동축부싱(17b)의 양 측면으로 윤활유가 흘러서 제2구동축부싱(17b)과 제2커버(27) 사이의 틈새로 윤활유가 흘러가도록 제2유로구멍(28a, 28b)이 형성된다. 그리고 제2종동축부싱(19b)의 양 측면으로 윤활유가 흘러서 제2종동축부싱(19b)과 제1커버(27) 사이의 틈새로 윤활유가 흘러가도록 제2유로구멍(28b, 28c)이 형성된다. 따라서 종래에는 제2구동축부싱(17b) 및 제2종동축부싱(19b)와 제2커버(27) 사이의 틈새 사이로만 윤활유가 흘러서 윤활유의 흐름이 원활하지 아니하였다. 그러나 도 1에 도시된 실시예의 경우 제2유로구멍(28)이 형성되어 윤활유의 흐름을 원활히 하여 부싱부(17b, 19b)에 면압이 발생하더라도 온도가 상승하는 것을 방지할 수 있다. 그리고 부싱부(17b, 19b)와 제2커버(27) 사이의 틈새로 이물질이 유입되더라도 윤활유의 흐름이 원활하여 이물질을 흘려 보낼 수 있다.The second flow path hole 28 is a second drive shaft bushing (17b) mounted on the other side of the drive shaft 10 and the second driven shaft bushing (19b) mounted on the other side of the driven shaft (14) so that the lubricating oil flows It is formed in the cover 27. More specifically, the second flow path holes 28a and 28b so that lubricant flows to both sides of the second drive shaft bushing 17b so that the lubricant flows through the gap between the second drive shaft bushing 17b and the second cover 27. Is formed. In addition, the second flow path holes 28b and 28c are formed such that the lubricant flows to both sides of the second driven shaft bushing 19b so that the lubricant flows through the gap between the second driven shaft bushing 19b and the first cover 27. do. Therefore, conventionally, lubricating oil flows only between the gap between the second driving shaft bushing 17b and the second driven shaft bushing 19b and the second cover 27, so that the lubricating oil does not flow smoothly. However, in the case of the embodiment shown in Figure 1, the second flow path hole 28 is formed to smooth the flow of lubricating oil can prevent the temperature rise even if the surface pressure occurs in the bushing (17b, 19b). In addition, even if foreign matter is introduced into the gap between the bushings 17b and 19b and the second cover 27, the lubricant may flow smoothly to send the foreign matter.

따라서 제1유로구멍(24) 및 제2유로구멍(28)은 부싱부(17, 19)에 더욱 많은 윤활유를 흐르게 하여 부싱부(17, 19)가 면압에 의하여 온도가 상승하는 것을 방지해준다. 따라서 부싱부(17, 19)가 소착되는 것을 예방한다. 그리고 부싱부(17, 19)와 커버부(23, 27) 사이의 틈새로 윤활유가 더욱 많이 흐르게 하여 이물질이 유입되더라도 이물질이 부싱부(17, 19)나 커버부(23, 27)에 들러붙어서 상기 틈새를 막는 것을 예방해준다.Accordingly, the first flow path hole 24 and the second flow path hole 28 allow more lubricating oil to flow through the bushing parts 17 and 19 to prevent the bushing parts 17 and 19 from rising due to the surface pressure. Therefore, the bushings 17 and 19 are prevented from squeezing. In addition, even if foreign matter flows in the gap between the bushing parts 17 and 19 and the cover parts 23 and 27, the foreign matter sticks to the bushing parts 17 and 19 or the cover parts 23 and 27. To prevent the gap.

10 : 구동축 11 : 제1기어
14 : 종동축 15 : 제2기어
17 : 구동축부싱 19 : 종동축부싱
21 : 하우징 23 : 제1커버
24 : 제1유로구멍 27 : 제2커버
28 : 제2유로구멍10: drive shaft 11: first gear
14: driven shaft 15: second gear
17: drive shaft bushing 19: driven shaft bushing
21 housing 23 first cover
24: first euro hole 27: second cover
28: second euro hole

Claims (2)

제1기어를 구비한 구동축과, 상기 제1기어와 이물림을 하는 제2기어를 구비한 종동축과, 상기 구동축의 일측과 타측에 장착된 구동축부싱과, 상기 종동축의 일측과 타측에 장착된 종동축부싱과, 상기 제1기어 및 상기 제2기어를 수용하는 하우징과, 상기 구동축과 상기 종동축의 일측을 감싸는 제1커버와, 상기 구동축과 상기 종동축의 타측을 감싸는 제2커버를 포함하는 기어펌프에 있어서,
상기 제1커버에는 상기 제1커버와 상기 구동축의 일측에 장착된 구동축부싱 사이에 형성된 틈과, 상기 제1커버와 상기 종동축의 일측에 장착된 종동축부싱 사이에 형성된 틈으로 윤활유가 흐르도록 제1유로구멍이 형성되고,
상기 제2커버에는 상기 제2커버와 상기 구동축의 타측에 장착된 구동축부싱 사이에 형성된 틈과, 상기 제2커버와 상기 종동축의 타측에 장착된 종동축부싱 사이에 형성된 틈으로 윤활유가 흐르도록 제2유로구멍이 형성되고,
상기 제1유로구멍은 상기 제1커버와 상기 구동축의 일측에 장착된 상기 구동축부싱 사이에 형성된 틈에서 상기 제1커버와 상기 종동축의 일측에 장착된 상기 종동축부싱 사이에 형성된 틈으로 윤활유가 흐르도록 형성되며,
상기 제2유로구멍은 상기 제2커버와 상기 구동축의 타측에 장착된 상기 구동축부싱 사이에 형성된 틈에서 상기 제2커버와 상기 종동축의 타측에 장착된 상기 종동축부싱 사이에 형성된 틈으로 운활유가 흐르도록 형성된 것을 특징으로 하는 기어펌프.A driven shaft having a drive shaft having a first gear, a second gear that is in engagement with the first gear, a drive shaft bushing mounted at one side and the other side of the drive shaft, and mounted at one side and the other side of the driven shaft. A driven shaft bushing, a housing accommodating the first gear and the second gear, a first cover surrounding one side of the drive shaft and the driven shaft, and a second cover surrounding the other side of the drive shaft and the driven shaft. In the gear pump comprising:
In the first cover, the lubricant flows through a gap formed between the first cover and a drive shaft bushing mounted on one side of the drive shaft, and a gap formed between the first cover and a driven shaft bushing mounted on one side of the driven shaft. The first flow path is formed,
In the second cover, the lubricant flows through a gap formed between the second cover and the drive shaft bushing mounted on the other side of the drive shaft, and a gap formed between the second cover and the driven shaft bushing mounted on the other side of the driven shaft. A second flow path is formed,
The first flow path hole has a lubricating oil in a gap formed between the first cover and the driven shaft bushing mounted on one side of the driven shaft in a gap formed between the first cover and the drive shaft bushing mounted on one side of the drive shaft. Is formed to flow,
The second channel hole is a gap formed between the second cover and the driven shaft bushing mounted on the other side of the driven shaft in a gap formed between the second cover and the drive shaft bushing mounted on the other side of the drive shaft. Gear pump characterized in that it is formed to flow. 삭제delete
KR1020100004392A 2010-01-18 2010-01-18 Gear Pump KR101196066B1 (en)

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JPH11336671A (en) 1998-05-28 1999-12-07 Shimadzu Corp Hydraulic gear pump or motor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11336671A (en) 1998-05-28 1999-12-07 Shimadzu Corp Hydraulic gear pump or motor

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