CN204271802U - A kind of hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap - Google Patents

A kind of hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap Download PDF

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Publication number
CN204271802U
CN204271802U CN201420831907.8U CN201420831907U CN204271802U CN 204271802 U CN204271802 U CN 204271802U CN 201420831907 U CN201420831907 U CN 201420831907U CN 204271802 U CN204271802 U CN 204271802U
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China
Prior art keywords
cap
rotating shaft
tooth
rolling bearing
bearing
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Active
Application number
CN201420831907.8U
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Chinese (zh)
Inventor
黄朝晖
帅倜
刘小军
罗碧
朱杰
周少华
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Hunan Chongde Technology Co., Ltd
Original Assignee
Hunan Sund Industrial and Technological Co Ltd
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Priority to CN201420831907.8U priority Critical patent/CN204271802U/en
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Abstract

The utility model provides the hermetically-sealed construction of a kind of dynamo oil lubrication rolling bearing end cap, comprise the rotating shaft of outer end cap, inner end cap, bearing and bearing supporting, diaphragm seal is provided with between the endoporus of described outer end cap and rotating shaft, described inner end cap is provided with the first sealing tooth and the second sealing tooth, first sealing tooth is positioned at the inside of inner end cap, be provided with the second diaphragm seal between first sealing tooth and rotating shaft, between the second sealing tooth and rotating shaft, be provided with packing; Be provided with atmospheric equilibrium hole bottom described inner end cap, atmospheric equilibrium hole and first in inner end cap seal tooth and the second lacuna sealed between tooth is communicated with.The utility model structure is simple, and can solve the Leakage of oil lubrication rolling bearing structure preferably.

Description

A kind of hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap
Technical field
The utility model relates to the hermetically-sealed construction of a kind of dynamo oil lubrication rolling bearing end cap.
Background technology
In motor bearings design, the rolling bearing structure of 90% is about had to use lubricating grease to lubricate.The rolling bearing structure lubricated is carried out for using lubricating grease, because the mobility of lubricating grease is much lower relative to lubricating oil, so the sealing requirements of this end cover designs to lubricant is lower, does not substantially have lubricating grease to flow out end cap as long as use in middle (center) bearing, just can meet design and use requirement.But, when rolling bearing structure must use oil lubrication, if adopt general grease lubrication end cap rolling bearing structure to design, be what can not meet the sealing requirements of lubricant.Because that structure is to the sealing of lubricating grease, general what adopt is sealing (radius clearance is 0.5 ~ 0.7mm about) compared with wide arc gap.Namely, between inside and outside end cap internal diameter and rotating shaft, sealing effectiveness is reached by designing certain gap.
That hermetically-sealed construction can meet the requirement of grease lubrication rolling bearing structure sealing.But, inapplicable to oil lubrication rolling bearing structure, because seal clearance is larger, during machine operation, due to the effect of rotating shaft centrifugal force, a large amount of lubricating oil can be made outwards to get rid of, thus the gap location between inside and outside end cap and rotating shaft, have outside a large amount of oil leakage to bearing or inside motor and go.Also there is the sealing structure of some classical oil lubrication rolling bearings in external motor producer, is mostly the rubber seal contact type sealing structure adopted, although sealing effectiveness is better, but seal easily weares and teares.After wearing and tearing, cause bearing Leakage equally.Therefore, need to regularly replace seal, maintenance is with after sale also cumbersome.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of structure simple and can solve the hermetically-sealed construction of the dynamo oil lubrication rolling bearing end cap of the Leakage of oil lubrication rolling bearing structure preferably.
The technical solution adopted in the utility model is: the rotating shaft comprising the supporting of outer end cap, inner end cap, bearing and bearing, diaphragm seal is provided with between the endoporus of described outer end cap and rotating shaft, described inner end cap is provided with the first sealing tooth and the second sealing tooth, first sealing tooth is positioned at the inside of inner end cap, is provided with the second diaphragm seal between the first sealing tooth and rotating shaft; Packing is provided with between second sealing tooth and rotating shaft; Be provided with atmospheric equilibrium hole bottom described inner end cap, atmospheric equilibrium hole and first in inner end cap seal tooth and the second lacuna sealed between tooth is communicated with.
In the hermetically-sealed construction of above-mentioned dynamo oil lubrication rolling bearing end cap, the material that described diaphragm seal and the second diaphragm seal adopt is copper.
In the hermetically-sealed construction of above-mentioned dynamo oil lubrication rolling bearing end cap, described outer end cap is provided with respirator.
In the hermetically-sealed construction of above-mentioned dynamo oil lubrication rolling bearing end cap, the gap between the endoporus of described diaphragm seal and rotating shaft is 0.1-0.2mm, and the gap between the endoporus of the second diaphragm seal and rotating shaft is 0.1-0.2mm.
Compared with prior art, the beneficial effects of the utility model are:
The utility model structure is simple, is provided with diaphragm seal, is provided with packing and the second diaphragm seal between inner end cap and rotating shaft, make the lubricating oil in bearing chamber by packing, the second diaphragm seal and the multiple obstruct of diaphragm seal between its outer end cap and rotating shaft, oil sealing effective; Atmospheric equilibrium hole is provided with bottom inner end cap of the present utility model, atmospheric equilibrium hole and first in inner end cap seal tooth and the second lacuna sealed between tooth is communicated with, can balance motor fan negative pressure that bearing is caused, effectively prevent oil because negative pressure is along rotating shaft to motor internal leakage of oil, outer end cap of the present utility model is provided with respirator, can the inner pressure differential with outside atmosphere of equalizer bearing, prevent the oil of bearing chamber inside from externally revealing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, the utility model comprises the rotating shaft 4 of outer end cap 2, inner end cap 6, bearing 5 and bearing supporting, be provided with diaphragm seal 1 between the endoporus of described outer end cap 2 and rotating shaft, the gap between the endoporus of described diaphragm seal 1 and rotating shaft 4 is 0.1-0.2mm, and outer end cap is provided with respirator 3.Respirator 3 can the inner pressure differential with outside atmosphere of equalizer bearing, prevents the oil of bearing chamber inside from externally revealing.
Described inner end cap 6 is provided with the first sealing tooth 61 and the second sealing tooth 62, first seals the inside that tooth 61 is positioned at inner end cap, and between the first sealing tooth 61 and rotating shaft 4, the gap be provided with between the endoporus of the second diaphragm seal 9, second diaphragm seal and rotating shaft is 0.1-0.2mm.Packing 7 is provided with between second sealing tooth 62 and rotating shaft 4; The bottom of described inner end cap 6 is provided with atmospheric equilibrium hole 8, and atmospheric equilibrium hole 8 and first in inner end cap 6 seal tooth 61 and the second lacuna sealed between tooth 62 is communicated with.During use, atmospheric equilibrium hole 8 is communicated with by atmospheric equilibrium pipe with air, can the negative pressure that causes bearing of balance motor fan, effectively prevent oil because negative pressure is along rotating shaft 4 to motor internal leakage of oil.
Be provided with diaphragm seal 1 between the utility model outer end cap 2 and rotating shaft 4, between inner end cap 6 and rotating shaft 4, be provided with packing 7 and the second diaphragm seal 9, make the lubricating oil in bearing chamber by packing 7, second diaphragm seal 9 or the multiple obstruct of diaphragm seal 1, oil sealing effective.Atmospheric equilibrium hole 8 is provided with bottom inner end cap 6 of the present utility model, atmospheric equilibrium hole 8 and first in inner end cap seal tooth 61 and the second lacuna sealed between tooth 62 is communicated with, during use, atmospheric equilibrium hole 8 is communicated with by atmospheric equilibrium pipe with air, the air pressure in the lacuna between the first sealing tooth 61 and the second sealing tooth 62 is made to be identical with the external world, can effective balance motor fan negative pressure that bearing is caused, effectively prevent oil because negative pressure is along rotating shaft to motor internal leakage of oil.Bearing outer end cap 2 is equipped with respirator 3, respirator 3 can the inner pressure differential with outside atmosphere of equalizer bearing, prevents the oil of bearing chamber inside from externally revealing.

Claims (4)

1. the hermetically-sealed construction of a dynamo oil lubrication rolling bearing end cap, it is characterized in that: the rotating shaft comprising the supporting of outer end cap, inner end cap, bearing and bearing, diaphragm seal is provided with between the endoporus of described outer end cap and rotating shaft, described inner end cap is provided with the first sealing tooth and the second sealing tooth, first sealing tooth is positioned at the inside of inner end cap, is provided with the second diaphragm seal between the first sealing tooth and rotating shaft; Packing is provided with between second sealing tooth and rotating shaft; Be provided with atmospheric equilibrium hole bottom described inner end cap, atmospheric equilibrium hole and first in inner end cap seal tooth and the second lacuna sealed between tooth is communicated with.
2. the hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap according to claim 1, is characterized in that: the material that described diaphragm seal and the second diaphragm seal adopt is copper.
3. the hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap according to claim 1, is characterized in that: described outer end cap is provided with respirator.
4. the hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap according to claim 1, it is characterized in that: the gap between the endoporus of described diaphragm seal and rotating shaft is 0.1-0.2mm, the gap between the endoporus of the second diaphragm seal and rotating shaft is 0.1-0.2mm.
CN201420831907.8U 2014-12-25 2014-12-25 A kind of hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap Active CN204271802U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420831907.8U CN204271802U (en) 2014-12-25 2014-12-25 A kind of hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420831907.8U CN204271802U (en) 2014-12-25 2014-12-25 A kind of hermetically-sealed construction of dynamo oil lubrication rolling bearing end cap

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CN204271802U true CN204271802U (en) 2015-04-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106411021A (en) * 2016-10-08 2017-02-15 上海川也电机有限公司 Sealing device for motor lubricating oil way

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106411021A (en) * 2016-10-08 2017-02-15 上海川也电机有限公司 Sealing device for motor lubricating oil way

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CP03 "change of name, title or address"
CP03 "change of name, title or address"

Address after: 411101 No.9, Chayuan Road, high tech Zone, Xiangtan City, Hunan Province

Patentee after: Hunan Chongde Technology Co., Ltd

Address before: 411101 Hunan Province, Xiangtan city Yuetang District Shuangma Industrial Park

Patentee before: HUNAN SUND INDUSTRIAL AND TECHNOLOGICAL Co.,Ltd.