CN102748158A - Centrifugal sealing structure of crankshaft of diesel engine - Google Patents

Centrifugal sealing structure of crankshaft of diesel engine Download PDF

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Publication number
CN102748158A
CN102748158A CN2012102465235A CN201210246523A CN102748158A CN 102748158 A CN102748158 A CN 102748158A CN 2012102465235 A CN2012102465235 A CN 2012102465235A CN 201210246523 A CN201210246523 A CN 201210246523A CN 102748158 A CN102748158 A CN 102748158A
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CN
China
Prior art keywords
crankshaft
oil
diesel engine
flange
sealing structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012102465235A
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Chinese (zh)
Inventor
杨杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI POWER ENGINEERING Co Ltd
Original Assignee
WUXI POWER ENGINEERING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUXI POWER ENGINEERING Co Ltd filed Critical WUXI POWER ENGINEERING Co Ltd
Priority to CN2012102465235A priority Critical patent/CN102748158A/en
Publication of CN102748158A publication Critical patent/CN102748158A/en
Pending legal-status Critical Current

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  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

The invention provides a centrifugal sealing structure of a crankshaft of a diesel engine. The centrifugal sealing structure is simple in structure, can reliably seal lubricating oil in a crankcase of the diesel engine, and prevents the lubricating oil from leaking. The centrifugal sealing structure comprises a diesel engine crankshaft component and an oil throwing ring, and the crankshaft component is connected with a flywheel cover through a crankshaft flange. The centrifugal sealing structure is characterized in that the oil throwing ring is sleeved on a shaft neck of the crankshaft flange, is in interference fit with the shaft neck of the crankshaft flange, and is axially positioned through a positioning step surface of the crankshaft flange.

Description

The centrifugal seal structure of crankshaft of diesel engine
Technical field
The present invention relates to the diesel engine technical field of sealing technology, be specially the centrifugal seal structure of crankshaft of diesel engine.
Background technique
Existing crankshaft of diesel engine sealing configuration normally adopts disc and oil sealing that lubricant oil is sealed; Because oil sealing is prone to aging, aging crank shaft oil seal can directly cause leakage of oil, also can consume lubricant oil simultaneously; Cause lack of lubrication power to descend, occur high temperature axis tile phenomenon when serious; In addition, if the crank shaft oil seal leakage of oil also can make motor dirty, influence outward appearance.
Summary of the invention
To the problems referred to above, the invention provides the centrifugal seal structure of crankshaft of diesel engine, it is simple in structure, can carry out reliable sealing to the lubricant oil in the diesel engine crankcase, prevents oil leakage.
Its technological scheme is such; It comprises crankshaft of diesel engine assembly and oil thrower ring; Said crankshaft group is connected with flywheel casing through crankshaft flange; It is characterized in that: said oil thrower ring is set on the axle journal of said crankshaft flange, the axle journal interference fit of said oil thrower ring and said crankshaft flange, and the positioning step over glaze that said oil thrower ring passes through said crankshaft flange is to the location.
It is further characterized in that: the oil guide slot that has annular on the said flywheel casing; The outer circumferential face of the joining section of said crankshaft flange and said flywheel casing has annular oil-return groove; Said annular oil-return groove is provided with four or five.
Adopt centrifugal seal structure of the present invention; Its beneficial effect is: thus oil thrower ring is installed on the axle journal of crankshaft flange and is connected with the crankshaft of diesel engine assembly; The rotation of crankshaft group drives oil thrower ring and rotates simultaneously; A lubricant oil part of falling on the oil thrower ring during diesel engine work is dumped in the crankcase under the centrifugal action of high speed rotating, and other a part of lubricant oil is thrown on the flywheel casing by oil thrower ring simultaneously, under the leading role of the annular oil guide slot in flywheel casing surface, flows to the crankshaft flange surface; And be back to oil sump along the annular oil-return groove of crankshaft flange outer circumferential face; Because the outer circumferential face of crankshaft flange and flywheel casing joining section has the oil-return groove of annular, the lubricant oil of falling in the oil-return groove can't be crossed the interface of sharp sudden change on the annular groove, thereby lubricant oil can't be along the outer circumferential flywheel casing end seepage of crankshaft flange; Thereby the lubricant oil that effectively prevents to fall on the flywheel casing oozes out from the gap of flywheel casing and crankshaft flange, has guaranteed reliable sealing effect.
Description of drawings
Fig. 1 is the centrifugal seal structural representation of crankshaft of diesel engine of the present invention;
Fig. 2 is the structure for amplifying schematic representation of crankshaft flange among the present invention.
Embodiment
See Fig. 1 and Fig. 2; The present invention includes crankshaft of diesel engine assembly 3 and oil thrower ring 1; Crankshaft group 3 is connected with flywheel casing 4 through crankshaft flange 2; Oil thrower ring 1 is set on the axle journal of crankshaft flange 2, the axle journal interference fit of oil thrower ring 1 and crankshaft flange 2, and oil thrower ring 1 is through positioning table terrace 5 axially locating of crankshaft flange.Have the oil guide slot 6 of annular on the flywheel casing 4; Crankshaft flange 2 has annular oil-return groove 7 with the outer circumferential face of the joining section of flywheel casing 4; The annular oil-return groove is provided with 7 and is provided with four or five, and annular oil-return groove 7 is provided with five in the present embodiment.

Claims (3)

1. the centrifugal seal structure of crankshaft of diesel engine; It comprises crankshaft of diesel engine assembly and oil thrower ring; Said crankshaft group is connected with flywheel casing through crankshaft flange; It is characterized in that: said oil thrower ring is set on the axle journal of said crankshaft flange, the axle journal interference fit of said oil thrower ring and said crankshaft flange, and the positioning step over glaze that said oil thrower ring passes through said crankshaft flange is to the location.
2. the centrifugal seal structure of crankshaft of diesel engine according to claim 1 is characterized in that: have the oil guide slot of annular on the said flywheel casing, the outer circumferential face of the joining section of said crankshaft flange and said flywheel casing has annular oil-return groove.
3. the centrifugal seal structure of crankshaft of diesel engine according to claim 2 is characterized in that: said annular oil-return groove is provided with four or five.
CN2012102465235A 2012-07-17 2012-07-17 Centrifugal sealing structure of crankshaft of diesel engine Pending CN102748158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012102465235A CN102748158A (en) 2012-07-17 2012-07-17 Centrifugal sealing structure of crankshaft of diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012102465235A CN102748158A (en) 2012-07-17 2012-07-17 Centrifugal sealing structure of crankshaft of diesel engine

Publications (1)

Publication Number Publication Date
CN102748158A true CN102748158A (en) 2012-10-24

Family

ID=47028590

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012102465235A Pending CN102748158A (en) 2012-07-17 2012-07-17 Centrifugal sealing structure of crankshaft of diesel engine

Country Status (1)

Country Link
CN (1) CN102748158A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197103A (en) * 2020-09-29 2021-01-08 中国航发湖南动力机械研究所 High-speed flywheel shell structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419202C1 (en) * 1994-06-01 1995-05-24 Kloeckner Humboldt Deutz Ag Crankcase for IC engine
CN2537851Y (en) * 2002-04-10 2003-02-26 青岛港务局 Crankshaft output flange with modified oil seal
CN2591233Y (en) * 2002-04-15 2003-12-10 上海柴油机股份有限公司 Diesel engine rear oil-sealing negative pressure anti-leaking apparatus
CN2665470Y (en) * 2003-12-31 2004-12-22 潍柴动力股份有限公司 Diesel engine crankshaft front oil blanket sealing arrangement
CN202001136U (en) * 2011-03-03 2011-10-05 宁波中策动力机电集团有限公司 Airtight oil seal structure for crankshaft of diesel engine
CN202756118U (en) * 2012-07-17 2013-02-27 无锡动力工程股份有限公司 Centrifugal seal structure of diesel engine crankshaft

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4419202C1 (en) * 1994-06-01 1995-05-24 Kloeckner Humboldt Deutz Ag Crankcase for IC engine
CN2537851Y (en) * 2002-04-10 2003-02-26 青岛港务局 Crankshaft output flange with modified oil seal
CN2591233Y (en) * 2002-04-15 2003-12-10 上海柴油机股份有限公司 Diesel engine rear oil-sealing negative pressure anti-leaking apparatus
CN2665470Y (en) * 2003-12-31 2004-12-22 潍柴动力股份有限公司 Diesel engine crankshaft front oil blanket sealing arrangement
CN202001136U (en) * 2011-03-03 2011-10-05 宁波中策动力机电集团有限公司 Airtight oil seal structure for crankshaft of diesel engine
CN202756118U (en) * 2012-07-17 2013-02-27 无锡动力工程股份有限公司 Centrifugal seal structure of diesel engine crankshaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112197103A (en) * 2020-09-29 2021-01-08 中国航发湖南动力机械研究所 High-speed flywheel shell structure
CN112197103B (en) * 2020-09-29 2022-07-08 中国航发湖南动力机械研究所 High-speed flywheel shell structure

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Application publication date: 20121024