CN204465282U - Threephase asynchronous - Google Patents
Threephase asynchronous Download PDFInfo
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- CN204465282U CN204465282U CN201520147482.3U CN201520147482U CN204465282U CN 204465282 U CN204465282 U CN 204465282U CN 201520147482 U CN201520147482 U CN 201520147482U CN 204465282 U CN204465282 U CN 204465282U
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- motor shaft
- bearing
- rear end
- end cap
- fore bearing
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Abstract
The utility model provides a kind of threephase asynchronous, belongs to field of electromechanical technology.It solve existing threephase asynchronous in harsh environments, there will be the problems such as rotating shaft axial endplay.This threephase asynchronous comprises motor shaft, motor casing and the front end housing and the rear end cap that are installed on motor casing rear and front end, motor shaft is arranged in motor casing, motor shaft is connected by fore bearing with front end housing, motor shaft is connected by rear bearing with rear end cap, the rear end of motor shaft is arranged with fan blade, the inner side of front end housing and rear end cap is all fixed with pressing plate by screw, pressing plate has the flange part that a circle is resisted against the outer ring of fore bearing and rear bearing, the outside of front end housing is fixed with fore bearing enclosing cover by screw, the outside of rear end cap is also fixed with rear bearing enclosing cover by screw, wavy spring sheet is provided with between fore bearing enclosing cover and fore bearing.It is simple that the utility model has structure, can eliminate the advantages such as axial endplay.
Description
Technical field
The utility model belongs to field of electromechanical technology, relates to a kind of motor, particularly a kind of threephase asynchronous.
Background technology
Threephase asynchronous machine is a kind of alternating current machine, is a class motor of powering by accessing 380V three-phase alternating-current supply simultaneously.Because the rotor of threephase asynchronous machine rotates with identical direction, different rotating speeds from stator rotating magnetic field, there is revolutional slip, so be threephase asynchronous machine.Due to it, to have structure simple, manufacture, operation and maintenance are conveniently, reliable and quality is less, the advantages such as cost is lower, so be widely used in driving in most of workers and peasants' manufacturing machine such as lathe, water pump, compressor, lifting hoisting equipment, mining machinery, light industry and machinery, agricultrue sideline production processing machinery and household electrical appliance and various electric tool, small-sized a few point device.
At present, the rotating shaft of existing threephase asynchronous machine is that entry type is set on motor front and back ends by bearing, by wave washer elastic force make rotating shaft axially wherein one section spacing, threephase asynchronous machine due to processing environment comparatively severe, when bearing capacity is greater than wave washer elastic force, there will be the forward and backward movement of rotating shaft out of control, occur axial endplay, Long-Time Service there will be the phenomenon of diastema, cannot meet high-precision grinding needs.
For above-mentioned Problems existing, people have made improvement miscellaneous to threephase asynchronous machine, some has also applied for patent, such as, discloses a kind of grinding head motor structure [application number: 201220145131.5 eliminating axial endplay belonging to threephase asynchronous machine in Chinese patent literature data; Authorization Notice No.: CN202550770U], it comprises motor body, motor body end is provided with end cap, bearing chamber is provided with in end cap, be provided with bearing in bearing chamber, be provided with axis through bore in bearing chamber, axis through bore inwall is provided with internal thread, axis, by the interior positioning sleeve be also provided with for compressing bearing, has the external screw thread with the internal thread corresponding matching of axis through bore outside this positioning sleeve.
Above-mentioned a kind of grinding head motor structure eliminating axial endplay, be connected with the axis through bore inner thread in bearing chamber by positioning sleeve, by regulating positioning sleeve to locate epitrochanterian bearing outer ring, compare the phenomenon that traditional technology solves rotating shaft axial endplay to a certain extent.But its structure need process internal and external threads, its difficulty of processing is increased, cost improves, and its motor other end does not arrange location structure, causes its other end still to there will be the phenomenons such as rotating shaft axial endplay, vibration in harsh environments.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, provides a kind of structure simple, can eliminate the threephase asynchronous of axial endplay.
The purpose of this utility model realizes by following technical proposal: a kind of threephase asynchronous, comprise motor shaft, motor casing and the front end housing and the rear end cap that are installed on motor casing rear and front end, described motor shaft is arranged in motor casing, described motor shaft is connected by fore bearing with front end housing, described motor shaft is connected by rear bearing with rear end cap, the rear end of described motor shaft is arranged with fan blade, it is characterized in that, described front end housing and the inner side of rear end cap are all fixed with pressing plate by screw, described pressing plate has the flange part that a circle is resisted against the outer ring of fore bearing and rear bearing, the outside of described front end housing is fixed with fore bearing enclosing cover by screw, the outside of described rear end cap is also fixed with rear bearing enclosing cover by screw, wavy spring sheet is provided with between described fore bearing enclosing cover and fore bearing.
This threephase asynchronous, axle bearing outer-ring is compressed by the flange part on pressing plate, and the wavy spring sheet between fore bearing enclosing cover and fore bearing, its structure is not only simple, and effectively can eliminate the axial endplay of motor shaft and bearing, thus ensure that the steady operation of threephase asynchronous and extend its useful life.
In above-mentioned threephase asynchronous, described motor shaft and be provided with outside framework oil seal between front end housing and rear end cap.Arranging of outside framework oil seal can enter motor internal by anti-sealing.
Compared with prior art, it is simple that this threephase asynchronous has structure, can eliminate the advantages such as axial endplay.
Accompanying drawing explanation
Fig. 1 is the half section schematic diagram of this threephase asynchronous.
In figure, 1, motor shaft; 2, motor casing; 3, front end housing; 4, rear end cap; 5, fore bearing; 6, rear bearing; 7, fan blade; 8, screw; 9, pressing plate; 9a, flange part; 10, fore bearing enclosing cover; 11, rear bearing enclosing cover; 12, wavy spring sheet; 13, outside framework oil seal.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, this threephase asynchronous comprises motor shaft 1, motor casing 2 and the front end housing 3 and the rear end cap 4 that are installed on motor casing 2 rear and front end, motor shaft 1 is arranged in motor casing 2, motor shaft 1 is connected by fore bearing 5 with front end housing 3, motor shaft 1 is connected by rear bearing 6 with rear end cap 4, the rear end of motor shaft 1 is arranged with fan blade 7, the inner side of front end housing 3 and rear end cap 4 is all fixed with pressing plate 9 by screw 8, pressing plate 9 has the flange part 9a that a circle is resisted against the outer ring of fore bearing 5 and rear bearing 6, the outside of front end housing 3 is fixed with fore bearing enclosing cover 10 by screw 8, the outside of rear end cap 4 is also fixed with rear bearing enclosing cover 11 by screw 8, wavy spring sheet 12 is provided with between fore bearing enclosing cover 10 and fore bearing 5.
In order to prevent the motor internal in this threephase asynchronous from intaking, its motor shaft 1 and be provided with outside framework oil seal 13 between front end housing 3 and rear end cap 4.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as motor shaft 1, motor casing 2, front end housing 3, rear end cap 4, fore bearing 5, rear bearing 6, fan blade 7, screw 8, pressing plate 9, flange part 9a, fore bearing enclosing cover 10, rear bearing enclosing cover 11, wavy spring sheet 12, outside framework oil seal 13 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (2)
1. a threephase asynchronous, comprise motor shaft (1), motor casing (2) and be installed on front end housing (3) and the rear end cap (4) of motor casing (2) rear and front end, described motor shaft (1) is arranged in motor casing (2), described motor shaft (1) is connected by fore bearing (5) with front end housing (3), described motor shaft (1) is connected by rear bearing (6) with rear end cap (4), the rear end of described motor shaft (1) is arranged with fan blade (7), it is characterized in that, described front end housing (3) and the inner side of rear end cap (4) are all fixed with pressing plate (9) by screw (8), described pressing plate (9) has the flange part (9a) that a circle is resisted against the outer ring of fore bearing (5) and rear bearing (6), the outside of described front end housing (3) is fixed with fore bearing enclosing cover (10) by screw (8), the outside of described rear end cap (4) is also fixed with rear bearing enclosing cover (11) by screw (8), wavy spring sheet (12) is provided with between described fore bearing enclosing cover (10) and fore bearing (5).
2. threephase asynchronous according to claim 1, is characterized in that, described motor shaft (1) and be provided with outside framework oil seal (13) between front end housing (3) and rear end cap (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520147482.3U CN204465282U (en) | 2015-03-16 | 2015-03-16 | Threephase asynchronous |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201520147482.3U CN204465282U (en) | 2015-03-16 | 2015-03-16 | Threephase asynchronous |
Publications (1)
Publication Number | Publication Date |
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CN204465282U true CN204465282U (en) | 2015-07-08 |
Family
ID=53672108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201520147482.3U Expired - Fee Related CN204465282U (en) | 2015-03-16 | 2015-03-16 | Threephase asynchronous |
Country Status (1)
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CN (1) | CN204465282U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107659027A (en) * | 2017-10-31 | 2018-02-02 | 浙江万时达电机有限公司 | A kind of high heat conduction radiation electromotor |
-
2015
- 2015-03-16 CN CN201520147482.3U patent/CN204465282U/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107659027A (en) * | 2017-10-31 | 2018-02-02 | 浙江万时达电机有限公司 | A kind of high heat conduction radiation electromotor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20180316 |
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CF01 | Termination of patent right due to non-payment of annual fee |