CN108494144B - Grease lubricated shaft sealing structure of motor transmission shaft - Google Patents
Grease lubricated shaft sealing structure of motor transmission shaft Download PDFInfo
- Publication number
- CN108494144B CN108494144B CN201810435701.6A CN201810435701A CN108494144B CN 108494144 B CN108494144 B CN 108494144B CN 201810435701 A CN201810435701 A CN 201810435701A CN 108494144 B CN108494144 B CN 108494144B
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- rotating shaft
- oil
- shaft
- sealing
- bearing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The invention discloses a grease lubricated shaft sealing structure of a motor transmission shaft, which comprises a sealing end cover mechanism, a front cover, a motor housing, a rear cover and an oil immersion framework, wherein a rotating shaft penetrates through the motor housing, one end of the rotating shaft is arranged as a rotating shaft output end, the other end of the rotating shaft is arranged as a rotating shaft input end, the oil immersion framework is welded on the rotating shaft, and a bearing A and a bearing B are arranged outside the oil immersion framework; the front side of the motor housing is integrally connected with a front cover, a sealing end cover mechanism is arranged between the front cover and the output end of the rotating shaft, the rear side of the motor housing is integrally connected with a rear cover, and a felt oil seal is arranged between the rear cover and the input end of the rotating shaft; the stability of rotating shaft rotation is improved, the lubricating effect of rotating shaft rotation is improved, the formed connecting joint is a labyrinth-shaped combined sealing end cover mechanism, the output end of the rotating shaft is sealed, the sealing effect is good, and lubricating grease cannot leak from one side of the sealing end cover mechanism.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a shaft sealing structure for grease lubrication of a transmission shaft of a motor.
Background
At present, the sealing ring commonly used for the rotating shaft of the motor is a single-layer sealing ring, only one sealing ring is sleeved on the periphery of the shaft, the requirement of protection cannot be met when the shaft rotates and is static, and the sealing effect is not good. Therefore, the shaft is easily abraded, and the sealing effect and the service life are seriously influenced. The sealing structure of the rotating shaft adopting the single waterproof ring or the single oil seal has general sealing performance, has large abrasion to the rotating shaft, is easy to generate heat and damage, and is difficult to improve the lasting sealing performance of the rotating shaft
For this reason, bearings in which grease is sealed are often used as bearings for motors, and the grease has a life determined by a load, a temperature, and a rotation speed. Therefore, a grease replacement motor having a structure in which new grease is supplied before the grease reaches the life and old grease is discharged is commercialized as an industrial motor. Therefore, a shaft seal structure capable of injecting and discharging grease lubrication is required to improve the service life and sealing performance of a motor transmission shaft, reduce wear, and improve rotational stability.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a shaft seal structure for grease lubrication of a transmission shaft of an electric motor.
In order to achieve the purpose, the invention provides the following technical scheme:
a shaft sealing structure for grease lubrication of a motor transmission shaft comprises a sealing end cover mechanism, a front cover, a motor housing, a rear cover and an oil immersion framework, wherein a rotating shaft penetrates through the motor housing, one end of the rotating shaft is arranged as a rotating shaft output end, the other end of the rotating shaft is arranged as a rotating shaft input end, the oil immersion framework is welded on the rotating shaft, and a bearing A and a bearing B are arranged outside the oil immersion framework; the front side of the motor housing is integrally connected with a front cover, a sealing end cover mechanism is arranged between the front cover and the output end of the rotating shaft, the rear side of the motor housing is integrally connected with a rear cover, and a felt oil seal is arranged between the rear cover and the input end of the rotating shaft; and a sealed oil storage cavity is enclosed among the sealing end cover mechanism, the front cover, the motor housing, the rear cover and the rotating shaft.
As a further scheme of the invention: the input end of the rotating shaft is connected with the motor, and the output end of the rotating shaft is connected with the driven equipment.
As a further scheme of the invention: the oil immersion framework is of a circular cylindrical structure, a plurality of oil immersion holes are formed in the side wall of the oil immersion framework, and an oil immersion cavity is formed between the inside of the oil immersion framework and the rotating shaft.
As a further scheme of the invention: the bearing A and the bearing B are both ball bearings, the oil immersion framework is sleeved in the inner rings of the bearing A and the bearing B, and the outer ends of the bearing A and the bearing B are both connected with the motor housing.
As a further scheme of the invention: the rear cover is provided with an oil inlet nozzle on the upper side, the oil inlet nozzle is communicated with the oil storage cavity through an oil inlet channel, the lower side of the rear cover is provided with an oil outlet nozzle, and the oil outlet nozzle is communicated with the oil storage cavity through an oil outlet channel.
As a further scheme of the invention: the sealing end cover mechanism consists of a locking bolt, a sealing ring, an end cover, a sealing gasket, a locking pin and an annular shaft surface oil seal.
As a further scheme of the invention: the annular shaft surface oil seal is sleeved on the output end of the rotating shaft and fixedly connected with the end cover through a locking pin, the outer sides of the end cover and the annular shaft surface oil seal are connected with the sealing ring, the sealing ring is connected with the front cover through a locking bolt, and the sealing ring is connected with the sealing gasket through an anchoring nail, so that a sealing end cover mechanism with a labyrinth-shaped combination connecting seam is formed.
Compared with the prior art, the invention has the beneficial effects that: a lubricated axle seal structure of grease of motor transmission axle, by end cover mechanism, protecgulum, motor housing and hou gai and enclose into sealed oil storage chamber between the pivot, inside establishes to bearing A and bearing B has increased pivot pivoted stability, lubricating grease soaks the pivot of oil immersion intracavity, improves pivot pivoted lubricated effect to, the joint line that constitutes is the end cover mechanism of labyrinth shape combination, seals the output of the rotating shaft, and is sealed effectual, lubricating grease can not spill from end cover mechanism one side.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the end cap sealing mechanism of the present invention.
In the figure: 1-rotating shaft output end, 2-rotating shaft input end, 3-sealing end cover mechanism, 4-front cover, 5-motor cover, 6-oil inlet nozzle, 7-oil inlet channel, 8-rear cover, 9-felt ring oil seal, 10-oil storage cavity, 11-oil immersion framework, 12-bearing B, 13-oil outlet channel, 14-oil outlet nozzle, 15-oil immersion hole, 16-bearing A, 17-oil immersion cavity, 18-locking bolt, 19-sealing ring, 20-end cover, 21-sealing pad, 22-locking pin, 23-annular shaft surface oil seal and 24-anchoring nail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, in an embodiment of the present invention, a shaft sealing structure for grease lubrication of a motor transmission shaft includes a sealing end cover mechanism 3, a front cover 4, a motor housing 5, a rear cover 8, and an oil immersion skeleton 11, a rotating shaft penetrates through the motor housing 5, one end of the rotating shaft is set as a rotating shaft output end 1, and the other end is set as a rotating shaft input end 2, the rotating shaft input end 2 is connected to a motor, and the rotating shaft output end 1 is connected to a driven device; the oil immersion framework 11 is welded on the rotating shaft, the oil immersion framework 11 is of a circular cylindrical structure, a plurality of oil immersion holes 15 are formed in the side wall of the oil immersion framework 11, and an oil immersion cavity 17 is formed between the inside of the oil immersion framework 11 and the rotating shaft in a surrounding mode.
The bearing A16 and the bearing B12 are arranged outside the oil immersion framework 11, the bearing A16 and the bearing B12 are ball bearings, the oil immersion framework 11 is sleeved in inner rings of the bearing A16 and the bearing B12, the outer ends of the bearing A16 and the bearing B12 are connected with the motor housing 5, and the rotating stability of the rotating shaft is improved; the front side of the motor housing 5 is integrally connected with a front cover 4, a sealing end cover mechanism 3 is arranged between the front cover 4 and the output end 1 of the rotating shaft, the rear side of the motor housing 5 is integrally connected with a rear cover 8, and a felt oil seal 9 is arranged between the rear cover 8 and the input end 2 of the rotating shaft; and a sealed oil storage cavity 10 is enclosed among the sealing end cover mechanism 3, the front cover 4, the motor housing 5, the rear cover 8 and the rotating shaft.
8 upsides of back lid are equipped with oil feed mouth 6, and oil feed mouth 6 communicates with oil storage chamber 10 through oil feed passageway 7, and 8 downside of back lid are equipped with out oil spout 14, and it communicates with oil storage chamber 10 through oil outlet channel 13 to go out oil spout 14, and when the pivot rotated, lubricating grease was input by oil feed mouth 6, and through the output of going out oil spout 14 after soaking immersion oil chamber 17 internal rotary shaft, improved the lubricated effect of pivot pivoted.
The sealing end cover mechanism 3 is composed of a locking bolt 18, a sealing ring 19, an end cover 20, a sealing gasket 21, a locking pin 22 and an annular shaft surface oil seal 23, the annular shaft surface oil seal 23 is sleeved on the rotating shaft output end 1, the annular shaft surface oil seal 23 is fixedly connected with the end cover 20 through the locking pin 22, the sealing ring 19 is connected with the outer side of the end cover 20 and the annular shaft surface oil seal 23, the sealing ring 19 is connected with the front cover 4 through the locking bolt 18, the sealing ring 19 is connected with the sealing gasket 21 through an anchoring nail 24, so that the sealing end cover mechanism 3 with a labyrinth-shaped combination connecting seam is formed, the rotating shaft output end 1 is sealed, the sealing effect is good, and lubricating grease cannot leak.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some simple modifications, equivalent changes and modifications to some technical features without creative efforts based on the disclosed technical contents, and all fall into the technical solution of the present invention.
In the description of the present specification, it is to be noted that, unless explicitly stated or limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (5)
1. A grease lubricated shaft sealing structure of a motor transmission shaft comprises a sealing end cover mechanism (3), a front cover (4), a motor housing (5), a rear cover (8) and an oil immersion framework (11), and is characterized in that a rotating shaft penetrates through the motor housing (5), one end of the rotating shaft is set as a rotating shaft output end (1), the other end of the rotating shaft is set as a rotating shaft input end (2), the oil immersion framework (11) is welded on the rotating shaft, and a bearing A (16) and a bearing B (12) are installed outside the oil immersion framework (11);
the front side of the motor housing (5) is integrally connected with a front cover (4), a sealing end cover mechanism (3) is arranged between the front cover (4) and the output end (1) of the rotating shaft, the rear side of the motor housing (5) is integrally connected with a rear cover (8), and a felt oil seal (9) is arranged between the rear cover (8) and the input end (2) of the rotating shaft; a sealed oil storage cavity (10) is enclosed between the sealing end cover mechanism (3), the front cover (4), the motor housing (5) and the rotating shaft as well as between the rear cover (8) and the rotating shaft;
the oil immersion framework (11) is of a circular cylindrical structure, a plurality of oil immersion holes (15) are formed in the side wall of the oil immersion framework (11), and an oil immersion cavity (17) is formed between the inside of the oil immersion framework (11) and the rotating shaft; the bearing A (16) and the bearing B (12) are both ball bearings, the oil immersion framework (11) is sleeved in the inner rings of the bearing A (16) and the bearing B (12), and the outer ends of the bearing A (16) and the bearing B (12) are both connected with the motor housing (5).
2. A grease lubricated shaft seal arrangement for a motor transmission shaft according to claim 1, characterised in that the input shaft end (2) is connected to the motor and the output shaft end (1) is connected to the driven device.
3. The grease lubricated shaft seal structure of a motor transmission shaft according to claim 1, characterized in that, the back lid (8) upside is equipped with oil feed nozzle (6), oil feed nozzle (6) is through oil feed passageway (7) and oil storage chamber (10) intercommunication, back lid (8) downside is equipped with oil outlet nozzle (14), oil outlet nozzle (14) is through going out oil passageway (13) and oil storage chamber (10) intercommunication.
4. A grease lubricated shaft seal arrangement for an electric motor transmission shaft according to claim 1, characterised in that the end closure mechanism (3) consists of a locking bolt (18), a sealing ring (19), an end closure (20), a sealing gasket (21), a locking pin (22) and an annular shaft face oil seal (23).
5. The grease lubricated shaft sealing structure of the transmission shaft of the motor according to claim 4, characterized in that the annular shaft surface oil seal (23) is sleeved on the output end (1) of the rotating shaft, the annular shaft surface oil seal (23) is fixedly connected with the end cover (20) through the locking pin (22), the outer sides of the end cover (20) and the annular shaft surface oil seal (23) are connected with the sealing ring (19), the sealing ring (19) is connected with the front cover (4) through the locking bolt (18), and the sealing ring (19) is connected with the sealing gasket (21) through the anchoring nail (24), so as to form the sealing end cover mechanism (3) with the connecting seam in a labyrinth shape combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810435701.6A CN108494144B (en) | 2018-05-04 | 2018-05-04 | Grease lubricated shaft sealing structure of motor transmission shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810435701.6A CN108494144B (en) | 2018-05-04 | 2018-05-04 | Grease lubricated shaft sealing structure of motor transmission shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108494144A CN108494144A (en) | 2018-09-04 |
| CN108494144B true CN108494144B (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810435701.6A Active CN108494144B (en) | 2018-05-04 | 2018-05-04 | Grease lubricated shaft sealing structure of motor transmission shaft |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194003A (en) * | 2018-11-02 | 2019-01-11 | 中车永济电机有限公司 | Motor bearing installation structure |
| CN111434970A (en) * | 2019-01-15 | 2020-07-21 | 康力电梯股份有限公司 | Bearing refueling chamber structure of armrest faucet |
| CN110932454A (en) * | 2019-11-20 | 2020-03-27 | 珠海凯邦电机制造有限公司 | Motor end cover and motor with same |
| CN115163933A (en) * | 2022-05-30 | 2022-10-11 | 江门市鑫辉特种密封科技有限公司 | Double-end-face feeding and discharging pipe sealing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223005A (en) * | 2010-04-13 | 2011-10-19 | 德昌电机(深圳)有限公司 | Rotor bearing arrangement |
| CN102231583A (en) * | 2011-06-29 | 2011-11-02 | 宁夏西北骏马电机制造股份有限公司 | Motor shaft extension end sealing structure and motor |
| CN202309327U (en) * | 2011-09-30 | 2012-07-04 | 江苏清江电机制造有限公司 | Oil leakage prevention structure of large and medium high-speed motor sliding bearing |
| CN204794633U (en) * | 2015-07-10 | 2015-11-18 | 钟祥新宇机电制造股份有限公司 | High -frequency vibration motor containing bearing oil mist lubricating structure |
| CN207278846U (en) * | 2017-10-12 | 2018-04-27 | 山西煤炭职业技术学院 | A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end |
-
2018
- 2018-05-04 CN CN201810435701.6A patent/CN108494144B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223005A (en) * | 2010-04-13 | 2011-10-19 | 德昌电机(深圳)有限公司 | Rotor bearing arrangement |
| CN102231583A (en) * | 2011-06-29 | 2011-11-02 | 宁夏西北骏马电机制造股份有限公司 | Motor shaft extension end sealing structure and motor |
| CN202309327U (en) * | 2011-09-30 | 2012-07-04 | 江苏清江电机制造有限公司 | Oil leakage prevention structure of large and medium high-speed motor sliding bearing |
| CN204794633U (en) * | 2015-07-10 | 2015-11-18 | 钟祥新宇机电制造股份有限公司 | High -frequency vibration motor containing bearing oil mist lubricating structure |
| CN207278846U (en) * | 2017-10-12 | 2018-04-27 | 山西煤炭职业技术学院 | A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end |
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| CN108494144A (en) | 2018-09-04 |
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