CN102916548A - Front cover structure for explosion-proof brushless motor - Google Patents
Front cover structure for explosion-proof brushless motor Download PDFInfo
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- CN102916548A CN102916548A CN2011102224215A CN201110222421A CN102916548A CN 102916548 A CN102916548 A CN 102916548A CN 2011102224215 A CN2011102224215 A CN 2011102224215A CN 201110222421 A CN201110222421 A CN 201110222421A CN 102916548 A CN102916548 A CN 102916548A
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Abstract
The invention provides a front cover structure for an explosion-proof brushless motor. Three-level step holes are formed in the center of a front cover; corresponding three-level steps are formed on a shaft; the three-level step holes of the front cover are sleeved outside the third level step of the shaft and are in clearance fit with the shaft to form a cylindrical explosive-proof surface; a bearing used for supporting the shaft is fixed in the second level step hole of the front cover; the bearing is arranged on the second level step of the shaft; a transition sleeve is arranged in the first level step hole of the front cover and is positioned between the first level step of the shaft and the front cover; an oil seal is arranged between the transition sleeve and the shaft and is arranged in the transition sleeve; a compression flange which compresses the transition sleeve so as to axially compress the bearing is arranged outside the transition sleeve; and the compression flange is arranged on the front cover. The front cover structure solves the problems of the current similar products, is ingenious in structure, convenient to assemble and maintain and low in manufacturing cost, greatly improves the performance of the explosion-proof brushless motor and can produce obvious social benefit after being popularized in batch.
Description
Technical field
The present invention relates to a kind of front-cover structure of the explosion-proof brushless motor without anti-explosion set.
Background technology
The front-cover structure of explosion-proof brushless motor is one of explosion-proof brushless motor key structure, and its structure quality directly affects the explosion-proof brushless motor performance.The deficiency that exists at present is: because anti-explosion set and protecgulum support the use, thus two explosion suppresion surfaces on generation end face and the face of cylinder.Because anti-explosion set should compress bearing, guarantee again the end face flame proof, thereby make this end face requirement of explosion proof be not easy to guarantee.The formation of cylinder explosion suppresion surface is to guarantee by the anti-explosion set precision, and this just makes anti-explosion set processing, manufacturing cost have relatively high expectations; Bothersome during the assembling of this anti-explosion set, explosion-proof brushless motor need to be broken during maintenance and just can operate afterwards, cumbersome.
Chinese patent utility model specification publication number CN201063512Y discloses a kind of explosion-proof permanent-magnet brushless DC motor, and its explosion-resistant enclosure comprises front motor cover, motor housing, motor rear cover, control box, control lid, rotor anti-explosion set, switch operator.Rotor anti-explosion set and front motor cover support the use, compressed the bearing of supporting electric arbor by the screw anti-explosion set, form the end face explosion suppresion surface, anti-explosion set cylindrical (rim of the mouth) is with after the front motor cover endoporus cooperates simultaneously, cooperate thereby make anti-explosion set endoporus and motor shaft form cylindrical gap, become the cylinder explosion suppresion surface.During assembling, first anti-explosion set is enclosed within on the mounted armature spindle, brearing bore is pressed on the axle cylindrical again, after together bearing top circle being pressed into afterwards in the protecgulum endoporus, again the anti-explosion set cylindrical is cooperated with the protecgulum endoporus, use screw in compression, at last protecgulum and combination of axle rotor are packed into another bearing in the motor rear cover, simultaneously, protecgulum also assembles with motor housing.General another bearing be cannot see during the final step assembling, be inconvenient to operate, or be not seated, or dress is not just, often with damage parts; This structure seems that part is few, but the anti-explosion set function is too much after the combination, should compress bearing, form the end face explosion suppresion surface with the protecgulum end face again, guarantee the end face flame proof, should cooperate with the protecgulum endoporus, form cylindrical gap with axle again and cooperate, thereby form face of cylinder explosion suppresion surface, simultaneously, also require the anti-explosion set requirement on machining accuracy relatively high, thereby manufacturing cost raises, and it is large that face of cylinder explosion suppresion surface forms relative difficulty, thereby quality is inconvenient to guarantee.When the maintenance motor is changed bearing the motors such as protecgulum are broken and just can operate afterwards, very inconvenient.Present this structure is the design custom that forms for many years, is that everybody generally acknowledges.The descendant always wants to try every possible means from aspect easy for installation when dealing with problems, and perhaps improves from this body structure of anti-explosion set, does not fundamentally break through all the time.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of structure ingenious, assembling, easy to maintenance, the front-cover structure without the explosion-proof brushless motor of anti-explosion set that manufacturing cost is lower.
Technical solution of the present invention is: the protecgulum middle part is provided with three grades of stepped holes; Three grades of corresponding steps are arranged on the axle; The third level stepped hole of protecgulum is placed in outside the third level step of axle, cooperates with shaft clearance, forms a face of cylinder explosion suppresion surface; Be fixed with the bearing for back shaft in the second level stepped hole of protecgulum, bearing is loaded on the second level step of axle; In the first order stepped hole of protecgulum spacer shell is housed, spacer shell is between the first order step and protecgulum of axle; Be provided with oil sealing between spacer shell and the axle; Oil sealing is loaded on spacer shell; The spacer shell outside is provided with the differential that compresses spacer shell and then axial compression bearing; Differential is loaded on protecgulum.
Described spacer shell is step-like cylindrical structure; Described differential places the spacer shell stage portion.
Described differential is fixed in protecgulum through screw.
The present invention courageously proposes to cancel anti-explosion set, substitutes anti-explosion set with protecgulum, and bearing etc. is installed from the protecgulum front.The protecgulum endoporus is three grades of stepped holes, its responsibility before undertaking, and aperture is undertaken the face of cylinder explosion suppresion surface that forms face of cylinder matched in clearance with axle; The bearing outside diameter assembling is undertaken in the centre, and spacer shell reinstalls oil sealing after cooperating; The macropore differential of packing into has also compressed bearing with screw in compression.The protecgulum endoporus is three grades of disposable clampings of stepped hole, machine-shaping, and dimensional accuracy easily guarantees, thus face of cylinder explosion suppresion surface easily forms, and product quality is guaranteed.During assembling, after in the motor rear cover of in the axle rotor combination another bearing being packed into the protecgulum endoporus is inserted in the axle first, the protecgulum cylindrical is packed into behind the fore shell endoporus, enters bearing, spacer shell, oil sealing, differential, screw from protecgulum is exterior again.Assemble sequence is good, and is easy to operate, changes bearing as long as both can from the outer operation of protecgulum.
The present invention has solved the deficiency of present this series products owing to adopting above technical scheme, and structure is ingenious, assembling, easy to maintenance, and manufacturing cost is lower, and the explosion-proof brushless motor performance is improved greatly, can produce significant social benefit after promoting in batches.
Description of drawings
Accompanying drawing is structural representation of the present invention.
Among the figure, 1, bearing, 2, spacer shell, 3, protecgulum, 4, differential, 5, axle, 6, oil sealing, 7, screw, 8, face of cylinder explosion suppresion surface.
Embodiment
Among the figure, protecgulum 3 has the cylinder flame proof function that bearing 1 effect and former anti-explosion set are installed.Protecgulum 3 middle parts are provided with three grades of stepped holes.Three grades of corresponding steps are arranged on the axle 5.The third level stepped hole of protecgulum 3 is placed in outside the third level step of axle 5, with axle 5 matched in clearance, forms a face of cylinder explosion suppresion surface 8.Be fixed with the bearing 1 for back shaft 5 in the second level stepped hole of protecgulum 3, bearing 1 is loaded on the second level step of axle 5.In the first order stepped hole of protecgulum 3 spacer shell 2 is housed, spacer shell 2 is between the first order step and protecgulum 3 of axle 5.Spacer shell 2 is step-like cylindrical structure.Be provided with oil sealing 6 between spacer shell 2 and the axle 5, oil sealing 6 is loaded on spacer shell 2, can prevent that foreign matter from entering.Spacer shell 2 outsides are provided with the differential 4 that compresses spacer shell 2 and then axial compression bearing 1, and differential 4 places spacer shell 2 stage portion, and differential 4 is fixed in protecgulum 3 through screw 7.
Claims (3)
1. the front-cover structure of an explosion-proof brushless motor is characterized in that: be provided with three grades of stepped holes in the middle part of the protecgulum (3); Three grades of corresponding steps are arranged on the axle (5); The third level stepped hole of protecgulum (3) is placed in outside the third level step of axle (5), with axle (5) matched in clearance; Be fixed with the bearing (1) for back shaft (5) in the second level stepped hole of protecgulum (3), bearing (1) is loaded on the second level step of axle (5); Spacer shell (2) is housed in the first order stepped hole of protecgulum (3), and spacer shell (2) is positioned between the first order step and protecgulum (3) of axle (5); Be provided with oil sealing (6) between spacer shell (2) and the axle (5); Oil sealing (6) is loaded on spacer shell (2); Spacer shell (2) outside is provided with the differential (4) that compresses spacer shell (2) and then axial compression bearing (1); Differential (4) is loaded on protecgulum (3).
2. the front-cover structure of explosion-proof brushless motor according to claim 1, it is characterized in that: described spacer shell (2) is step-like cylindrical structure; Described differential (4) places spacer shell (2) stage portion.
3. the front-cover structure of explosion-proof brushless motor according to claim 1, it is characterized in that: described differential (4) is fixed in protecgulum (3) through screw (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110222421.5A CN102916548B (en) | 2011-08-04 | 2011-08-04 | A kind of front-cover structure of explosion-proof brushless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110222421.5A CN102916548B (en) | 2011-08-04 | 2011-08-04 | A kind of front-cover structure of explosion-proof brushless motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102916548A true CN102916548A (en) | 2013-02-06 |
| CN102916548B CN102916548B (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110222421.5A Active CN102916548B (en) | 2011-08-04 | 2011-08-04 | A kind of front-cover structure of explosion-proof brushless motor |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226408A (en) * | 2017-07-06 | 2017-10-03 | 常熟市佳能电梯配件有限公司 | A kind of permanent magnetism flame proof INCREASEDSAFETY traction machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941571Y (en) * | 2006-05-11 | 2007-08-29 | 南阳防爆集团有限公司 | Composite explosion-isolating 3-phase asynchronous motor |
| JP2010226927A (en) * | 2009-03-25 | 2010-10-07 | Toshiba Corp | Bearing device of rotary electric machine for railway vehicle |
| CN201781356U (en) * | 2010-08-31 | 2011-03-30 | 湘潭市长航电机有限公司 | Flameproof motor |
| CN102111039A (en) * | 2011-03-24 | 2011-06-29 | 宁夏西北骏马电机制造股份有限公司 | Flameproof motor |
| CN202150782U (en) * | 2011-08-04 | 2012-02-22 | 湖北毅源科技开发有限公司 | Front cover structure of explosion-proof brushless motor |
-
2011
- 2011-08-04 CN CN201110222421.5A patent/CN102916548B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200941571Y (en) * | 2006-05-11 | 2007-08-29 | 南阳防爆集团有限公司 | Composite explosion-isolating 3-phase asynchronous motor |
| JP2010226927A (en) * | 2009-03-25 | 2010-10-07 | Toshiba Corp | Bearing device of rotary electric machine for railway vehicle |
| CN201781356U (en) * | 2010-08-31 | 2011-03-30 | 湘潭市长航电机有限公司 | Flameproof motor |
| CN102111039A (en) * | 2011-03-24 | 2011-06-29 | 宁夏西北骏马电机制造股份有限公司 | Flameproof motor |
| CN202150782U (en) * | 2011-08-04 | 2012-02-22 | 湖北毅源科技开发有限公司 | Front cover structure of explosion-proof brushless motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107226408A (en) * | 2017-07-06 | 2017-10-03 | 常熟市佳能电梯配件有限公司 | A kind of permanent magnetism flame proof INCREASEDSAFETY traction machine |
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| Publication number | Publication date |
|---|---|
| CN102916548B (en) | 2016-06-01 |
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Effective date of registration: 20211014 Address after: 441000 8th floor, Ruicheng international office building, Hanjiang North Road, Fancheng District, Xiangyang City, Hubei Province (residence declaration) Patentee after: Hubei xiangte Intelligent Technology Co.,Ltd. Address before: 441000 No. 14, Changhong North Road, high tech Zone, Xiangfan City, Hubei Province Patentee before: HUBEI YIYUAN TECHNOLOGY DEVELOPMENT Co.,Ltd. |