CN201334964Y - Diesel engine crankshaft oil seal - Google Patents

Diesel engine crankshaft oil seal Download PDF

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Publication number
CN201334964Y
CN201334964Y CNU2008202333409U CN200820233340U CN201334964Y CN 201334964 Y CN201334964 Y CN 201334964Y CN U2008202333409 U CNU2008202333409 U CN U2008202333409U CN 200820233340 U CN200820233340 U CN 200820233340U CN 201334964 Y CN201334964 Y CN 201334964Y
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CN
China
Prior art keywords
crankshaft
diesel engine
positioning sleeve
oil seal
sleeve
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Expired - Lifetime
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CNU2008202333409U
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Chinese (zh)
Inventor
欧阳宪林
王慧
李红珍
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China National Heavy Duty Truck Group Jinan Power Co Ltd
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China National Heavy Duty Truck Group Jinan Power Co Ltd
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Priority to CNU2008202333409U priority Critical patent/CN201334964Y/en
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Abstract

本实用新型公开了一种柴油机曲轴油封，包括轴套、内部定位套、外部定位套和骨架，所述轴套的内侧即为内部定位套，所述内部定位套固定在曲轴上，所述骨架固定在柴油机机体或齿轮室上，所述密封唇设于轴套与骨架之间；所述内部定位套与曲轴为过盈配合；所述骨架通过外部定位套固定在柴油机机体或齿轮室的油封安装孔上，所述外部定位套与油封安装孔为过盈配合。本实用新型取得的有益效果是：轴套通过内部定位套固定在曲轴上，密封唇设于轴套与骨架之间，在柴油机运行的时候，只会磨损轴套，而不会对曲轴造成磨损，因此柴油机长时间运行后，不用更换曲轴，从而大大降低了柴油机曲轴的更换和维护费用。

The utility model discloses a crankshaft oil seal of a diesel engine, which comprises a shaft sleeve, an internal positioning sleeve, an external positioning sleeve and a skeleton. The inner side of the shaft sleeve is the internal positioning sleeve. The internal positioning sleeve is fixed on the crankshaft. The skeleton Fixed on the diesel engine body or gear chamber, the sealing lip is set between the shaft sleeve and the skeleton; the internal positioning sleeve and the crankshaft are interference fit; the skeleton is fixed on the oil seal of the diesel engine body or gear chamber through the external positioning sleeve On the installation hole, the outer positioning sleeve and the oil seal installation hole are interference fit. The beneficial effects obtained by the utility model are: the shaft sleeve is fixed on the crankshaft through the internal positioning sleeve, and the sealing lip is arranged between the shaft sleeve and the frame, and only the shaft sleeve will be worn when the diesel engine is running, and the crankshaft will not be worn. , Therefore, after the diesel engine runs for a long time, there is no need to replace the crankshaft, which greatly reduces the replacement and maintenance costs of the diesel engine crankshaft.

Description

柴油机曲轴油封 Diesel engine crankshaft oil seal

技术领域 technical field

本实用新型涉及一种油封，特别是一种柴油机曲轴油封。The utility model relates to an oil seal, in particular to a crankshaft oil seal of a diesel engine.

背景技术 Background technique

柴油机工作时为防止曲轴前后端沿轴向漏油，都装有油封装置。目前的柴油机的前后油封都是采用骨架油封形式，曲轴表面直接与油封的密封唇接触摩擦，油封与曲轴相对转动，长时间使用后曲轴易磨损，而更换曲轴不但成本高而且操作麻烦。When the diesel engine is working, in order to prevent oil leakage from the front and rear ends of the crankshaft along the axial direction, an oil seal device is installed. The front and rear oil seals of current diesel engines are all in the form of skeleton oil seals. The surface of the crankshaft directly contacts and rubs against the sealing lip of the oil seal. The oil seal and the crankshaft rotate relatively.

发明内容 Contents of the invention

本实用新型要解决的问题是：提供一种柴油机曲轴油封，该油封在柴油机运行的时候，只会磨损轴套，而不会对曲轴造成磨损，因此长时间运行后，不用更换曲轴，大大降低了柴油机曲轴的更换和维护费用。The problem to be solved by the utility model is: to provide a crankshaft oil seal of a diesel engine. When the diesel engine is running, the oil seal will only wear the bushing and not the crankshaft. Replacement and maintenance costs of the diesel engine crankshaft.

为了解决上述技术问题，本实用新型的柴油机曲轴油封，包括轴套、内部定位套、外部定位套和骨架，所述轴套的内侧即为内部定位套，所述内部定位套固定在曲轴上，所述骨架固定在柴油机机体或齿轮室上，所述密封唇设于轴套与骨架之间。In order to solve the above technical problems, the diesel engine crankshaft oil seal of the present utility model includes a shaft sleeve, an internal positioning sleeve, an external positioning sleeve and a skeleton. The inner side of the shaft sleeve is the internal positioning sleeve, and the internal positioning sleeve is fixed on the crankshaft. The frame is fixed on the body of the diesel engine or the gear chamber, and the sealing lip is arranged between the shaft sleeve and the frame.

本实用新型的柴油机曲轴油封，所述内部定位套与曲轴为过盈配合。In the diesel engine crankshaft oil seal of the utility model, the internal positioning sleeve and the crankshaft are interference fit.

本实用新型的柴油机曲轴油封，所述骨架通过外部定位套固定在柴油机机体或齿轮室的油封安装孔上，所述外部定位套与油封安装孔为过盈配合。In the diesel engine crankshaft oil seal of the utility model, the skeleton is fixed on the oil seal installation hole of the diesel engine body or the gear chamber through an external positioning sleeve, and the external positioning sleeve and the oil seal installation hole are interference fit.

本实用新型取得的有益效果是：轴套通过内部定位套固定在曲轴上，密封唇设于轴套与骨架之间，在柴油机运行的时候，只会磨损轴套，而不会对曲轴造成磨损，因此柴油机长时间运行后，不用更换曲轴，从而大大降低了柴油机曲轴的更换和维护费用。The beneficial effects obtained by the utility model are: the shaft sleeve is fixed on the crankshaft through the internal positioning sleeve, and the sealing lip is arranged between the shaft sleeve and the skeleton, and only the shaft sleeve will be worn when the diesel engine is running, and the crankshaft will not be worn. , Therefore, after the diesel engine runs for a long time, there is no need to replace the crankshaft, which greatly reduces the replacement and maintenance costs of the diesel engine crankshaft.

附图说明 Description of drawings

图1是油封在曲轴前轴上的结构示意图。Figure 1 is a schematic diagram of the structure of the oil seal on the crankshaft front axle.

图2是图1中A处的局部放大图。Fig. 2 is a partial enlarged view of A in Fig. 1 .

图3是油封在曲轴后轴上的结构示意图。Fig. 3 is a structural schematic diagram of the oil seal on the rear axle of the crankshaft.

图4是图3中B处的局部放大图。Fig. 4 is a partial enlarged view of B in Fig. 3 .

图中：1、柴油机机体，2、油封，3、曲轴，4、外部定位套，5、骨架，6、内部定位套，7、轴套，8、密封唇，9、齿轮室。In the figure: 1, diesel engine body, 2, oil seal, 3, crankshaft, 4, external positioning sleeve, 5, skeleton, 6, internal positioning sleeve, 7, shaft sleeve, 8, sealing lip, 9, gear chamber.

具体实施方式 Detailed ways

实施例1Example 1

如图1和图2所示，本实用新型的柴油机曲轴油封2，安装在曲轴3的前轴上，包括轴套7、内部定位套6、外部定位套4、骨架5和密封唇8，所述轴套7的内侧即为内部定位套6，所述内部定位套6固定在曲轴3上，所述骨架5固定在柴油机机体1上，所述密封唇8设于轴套7与骨架5之间；所述内部定位套6与曲轴3为过盈配合；所述骨架5通过外部定位套4固定在柴油机机体1上的油封安装孔上，所述外部定位套4与油封安装孔为过盈配合。As shown in Figures 1 and 2, the crankshaft oil seal 2 of the diesel engine of the present invention is installed on the front axle of the crankshaft 3, and includes a shaft sleeve 7, an internal positioning sleeve 6, an external positioning sleeve 4, a skeleton 5 and a sealing lip 8. The inner side of the shaft sleeve 7 is the inner positioning sleeve 6, the inner positioning sleeve 6 is fixed on the crankshaft 3, the frame 5 is fixed on the diesel engine body 1, and the sealing lip 8 is arranged between the shaft sleeve 7 and the frame 5 Between; the internal positioning sleeve 6 and the crankshaft 3 are interference fit; the skeleton 5 is fixed on the oil seal installation hole on the diesel engine body 1 through the external positioning sleeve 4, and the external positioning sleeve 4 and the oil seal installation hole are interference fit Cooperate.

由于具有上述结构，所以曲轴3旋转时，轴套7与密封唇8接触并会产生摩擦，而曲轴3则不与密封唇8结触，不会有磨损。因此油封唇8磨损的是轴套7，长时间使用后，当轴套7磨损比较厉害时可以更换油封2，而不用更换曲轴3。Due to the above-mentioned structure, when the crankshaft 3 rotates, the shaft sleeve 7 contacts the sealing lip 8 and generates friction, while the crankshaft 3 does not contact the sealing lip 8, and there is no abrasion. Therefore oil seal lip 8 wears and tear is axle sleeve 7, after using for a long time, oil seal 2 can be replaced when axle sleeve 7 wears and teares more severe, and needn't change crankshaft 3.

实施例2Example 2

如图3和图4所示，本实用新型的的柴油机曲轴油封2，安装在曲轴3的后轴上，所述骨架5通过外部定位套4固定在齿轮室9上的油封安装孔上，所述外部定位套4与油封安装孔为过盈配合。其它的结构与用法与实施例1基本相同。As shown in Figures 3 and 4, the crankshaft oil seal 2 of the diesel engine of the present invention is installed on the rear axle of the crankshaft 3, and the skeleton 5 is fixed on the oil seal installation hole on the gear chamber 9 through the external positioning sleeve 4, so that The external positioning sleeve 4 is an interference fit with the oil seal mounting hole. Other structures and usage are basically the same as in Embodiment 1.

Claims (3)

1.一种柴油机曲轴油封，其特征在于：包括轴套(7)、内部定位套(6)、外部定位套(4)、骨架(5)和密封唇(8)，所述轴套(7)的内侧即为内部定位套(6)，所述内部定位套(6)固定在曲轴(3)上，所述骨架(5)固定在柴油机机体(1)或齿轮室(9)上，所述密封唇(8)设于轴套(7)与骨架(5)之间。1. A diesel engine crankshaft oil seal is characterized in that: comprise axle sleeve (7), internal positioning sleeve (6), external positioning sleeve (4), skeleton (5) and sealing lip (8), described axle sleeve (7) ) is the internal positioning sleeve (6), the internal positioning sleeve (6) is fixed on the crankshaft (3), the skeleton (5) is fixed on the diesel engine body (1) or the gear chamber (9), the The sealing lip (8) is arranged between the shaft sleeve (7) and the frame (5). 2.根据权利要求1所述的柴油机曲轴密封，其特征在于：所述内部定位套(6)与曲轴(3)为过盈配合。2. The crankshaft seal of a diesel engine according to claim 1, characterized in that: the inner positioning sleeve (6) is in interference fit with the crankshaft (3). 3.根据权利要求1所述的柴油机曲轴密封，其特征在于：所述骨架(5)通过外部定位套(4)固定在柴油机机体(1)或齿轮室(9)的油封安装孔上，所述外部定位套(4)与油封安装孔为过盈配合。3. The diesel engine crankshaft seal according to claim 1, characterized in that: the skeleton (5) is fixed on the oil seal installation hole of the diesel engine body (1) or the gear chamber (9) through an external positioning sleeve (4), so that Said external positioning sleeve (4) is an interference fit with the oil seal mounting hole.
CNU2008202333409U 2008-12-30 2008-12-30 Diesel engine crankshaft oil seal Expired - Lifetime CN201334964Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202333409U CN201334964Y (en) 2008-12-30 2008-12-30 Diesel engine crankshaft oil seal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202333409U CN201334964Y (en) 2008-12-30 2008-12-30 Diesel engine crankshaft oil seal

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CN201334964Y true CN201334964Y (en) 2009-10-28

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CNU2008202333409U Expired - Lifetime CN201334964Y (en) 2008-12-30 2008-12-30 Diesel engine crankshaft oil seal

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103670783A (en) * 2012-09-17 2014-03-26 广西玉柴机器股份有限公司 Front oil seal carrier for diesel engines
CN105156677A (en) * 2015-09-01 2015-12-16 东风朝阳朝柴动力有限公司 Floating diesel engine crankshaft oil seal
CN105736705A (en) * 2016-05-05 2016-07-06 青岛开世密封工业有限公司 High-horsepower engine crankshaft polytetrafluoroethylene (PTFE) combined oil seal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103670783A (en) * 2012-09-17 2014-03-26 广西玉柴机器股份有限公司 Front oil seal carrier for diesel engines
CN105156677A (en) * 2015-09-01 2015-12-16 东风朝阳朝柴动力有限公司 Floating diesel engine crankshaft oil seal
CN105736705A (en) * 2016-05-05 2016-07-06 青岛开世密封工业有限公司 High-horsepower engine crankshaft polytetrafluoroethylene (PTFE) combined oil seal

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CX01 Expiry of patent term

Granted publication date: 20091028

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