CN105375680A - Centrifugal device for alternating current and direct current dual-purpose motor - Google Patents
Centrifugal device for alternating current and direct current dual-purpose motor Download PDFInfo
- Publication number
- CN105375680A CN105375680A CN201510901492.6A CN201510901492A CN105375680A CN 105375680 A CN105375680 A CN 105375680A CN 201510901492 A CN201510901492 A CN 201510901492A CN 105375680 A CN105375680 A CN 105375680A
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- China
- Prior art keywords
- motor
- positioning sleeve
- centrifugal device
- centrifugal
- rotating shaft
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Classifications
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- 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
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a centrifugal device for an alternating current and direct current dual-purpose motor. The centrifugal device comprises an alternating current and direct current motor body, wherein one end of a rotating shaft of the alternating current and direct current motor body extends out of a rear end cover of the motor; a fixed plate is arranged at the end of the rotating shaft; two ends of the fixed plate are symmetrically hinged with an arc-shaped centrifuge plate employing the center of the fixed plate as the symmetric point; and a positioning sleeve is arranged on the rear end cover of the motor in a way of matching the centrifuge plate. According to the centrifugal device for the alternating current and direct current dual-purpose motor, a friction assembly which comprises the centrifuge plate and the positioning sleeve is additionally arranged on the rotating shaft of the motor; when the rotating shaft of the motor rotates, friction is generated between the centrifuge plate and the inner wall of the positioning sleeve; the higher the rotating speed is, the larger the friction force between the centrifuge plate and the inner wall of the positioning sleeve is; the rotating speed of the rotating shaft is reduced through the friction force; the centrifugal device is simple in structure and easy to achieve; the rotating speed when the alternating current and direct current dual-purpose motor is started can be effectively reduced; the damage to matched equipment caused by the over-high rotating speed is avoided; and meanwhile, the downtime of the matched equipment can also be greatly shortened.
Description
Technical field
The present invention relates to a kind of universal motor, particularly relate to a kind of centrifugal device for universal motor.
Background technology
Universal motor (universalmotor) is that one can by Alternating Current Power Supply, also can by the series-wound motor of direct current supply, also known as general motor.This motor is in fact D.C. series motor.Its immanent structure and simple direct current machine, do not have large difference, is all through turning to electrical equipment, electric current to be inputted armature winding by electromechanical brush, the form that its magnetic field becomes to connect with armature winding.The turning to of dual-purpose motor switches very convenient, as long as diverter switch is by field coil reversal connection, can realize the reverse of rotor and clockwise.Just in order to make it adapt to ac operation.
As everyone knows, the rotating shaft rotating speed of universal motor is very high, and especially when starting, rotating speed is higher, can reach 2 ~ 30,000 turns per minute; During normal operation, rotating speed also to turn left the right side up to per minute 10,000.Often cause corollary equipment cannot bear its high rotating speed because rotating speed when it starts is too high and damage.Because machine shaft inertia causes more greatly corollary equipment longer for downtime simultaneously when corollary equipment is shut down.
Summary of the invention
The object of the present invention is to provide a kind of centrifugal device for universal motor, it can reduce rotating speed when universal motor starts effectively, to solve the problems referred to above that in prior art, universal motor exists.
For reaching this object, the present invention by the following technical solutions:
A kind of centrifugal device for universal motor, it comprises AC/DC motor body, wherein, back end cover for motor is stretched out in rotating shaft one end of described AC/DC motor body, this end of described rotating shaft is provided with fixed head, the two ends of described fixed head are hinged with the centrifugal film of a circular arc with its center for symmetric points symmetry, coordinate described centrifugal film to cover in motor rear end and are provided with positioning sleeve.
Especially, the two ends of described fixed head are with its center for symmetric points symmetry offers a pin-and-hole, and described pin-and-hole internal fixtion has bearing pin, and described centrifugal film is articulated with on described bearing pin, and described pin-and-hole is relative to the central point eccentric setting of fixed head.
Especially, described motor rear end covers and offers mounting groove, and in described mounting groove and positioning sleeve, correspondence offers connecting hole, and positioning sleeve is fixed on motor rear end through positioning sleeve and covers by set bolt.
Especially, the outer end of described positioning sleeve is fixed with cover plate.
Especially, the hinged end of described centrifugal film offers one " U " type breach, described " U " type breach both sides centrifugal film on correspondence offer hinge hole, the hinged end of described centrifugal film by " U " type breach is articulated with the two ends of described bearing pin.
Especially, the cross section of described fixed head is kidney-shaped structure.
Beneficial effect of the present invention is, in the rotating shaft of universal motor, set up for the centrifugal device of universal motor the friction component be made up of centrifugal film and positioning sleeve compared with prior art, in universal motor axis of rotation process, centrifugal film and positioning sleeve inwall produce and rub, and the larger frictional force between the two of rotating speed is larger, is reduced the rotating speed of rotating shaft by both frictional force.Not only structure is simple, is easy to realize; And the rotating speed that can effectively reduce when universal motor starts, avoid damaging corollary equipment because rotating speed is too high, also greatly can shorten the downtime of corollary equipment simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the centrifugal device for universal motor that the specific embodiment of the invention 1 provides;
Fig. 2 is the assembling schematic diagram of the centrifugal film of the centrifugal device for universal motor that the specific embodiment of the invention 1 provides;
Fig. 3 is the structural representation of the fixed head of the centrifugal device for universal motor that the specific embodiment of the invention 1 provides;
Fig. 4 is the structural representation of the centrifugal film of the centrifugal device for universal motor that the specific embodiment of the invention 1 provides;
Fig. 5 is the structural representation of the positioning sleeve of the centrifugal device for universal motor that the specific embodiment of the invention 1 provides.
In figure:
1, AC/DC motor body; 2, machine shaft; 3, back end cover for motor; 4, fixed head; 5, centrifugal film; 6, positioning sleeve; 7, bearing pin; 8, " U " type breach; 9, hinge hole; 10, connecting hole; 11, set bolt; 12, cover plate.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Refer to shown in Fig. 1 to Fig. 5, in the present embodiment, a kind of centrifugal device for universal motor comprises AC/DC motor body 1, machine shaft 2, back end cover for motor 3, fixed head 4, centrifugal film 5 and positioning sleeve 6, back end cover for motor 3 is stretched out in one end of described machine shaft 2, described fixed head 4 is fixedly installed in one end that described machine shaft 2 stretches out back end cover for motor 3, the cross section of described fixed head 4 is kidney-shaped structure, and the two ends of described fixed head 4 with its center for symmetric points symmetry offers a pin-and-hole 9, described pin-and-hole 9 internal fixtion has bearing pin 7, and described pin-and-hole 9 is relative to the central point eccentric setting of fixed head 4, described centrifugal film 5 entirety is arc-shaped structure, its one end is articulated with on described bearing pin 7, the hinged end of described centrifugal film 5 offers one " U " type breach 8, described " U " type breach 8 both sides centrifugal film 5 on correspondence offer hinge hole, the hinged end of described centrifugal film 5 passes through " U " type breach 8 is articulated with the two ends of described bearing pin 7.
Described positioning sleeve 6 coordinates described centrifugal film 5 to be installed on back end cover for motor 3, described back end cover for motor 3 offers mounting groove, in described mounting groove and positioning sleeve 6, correspondence offers connecting hole 10, positioning sleeve 6 is fixed on back end cover for motor 3 through positioning sleeve 6 by set bolt 11, and the outer end of described positioning sleeve 6 is fixed with cover plate 12.
Above-mentioned machine shaft 2 is in rotation process, fixed head 4 is driven to rotate, centrifugal film 5 is opened because of the centrifugal force of fixed head 4 and is produced frictional force with the contact internal walls of described positioning sleeve 6, the rotating speed of machine shaft 2 is faster, frictional force between centrifugal film 5 and positioning sleeve 6 is larger, is lowered the rotating speed of machine shaft 2 by frictional force between the two.
Above embodiment has just set forth general principle of the present invention and characteristic; the present invention does not limit by above-mentioned example; without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and change all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (6)
1. the centrifugal device for universal motor, it comprises AC/DC motor body, it is characterized in that, back end cover for motor is stretched out in rotating shaft one end of described AC/DC motor body, this end of described rotating shaft is provided with fixed head, the two ends of described fixed head are hinged with the centrifugal film of a circular arc with its center for symmetric points symmetry, coordinate described centrifugal film to cover in motor rear end and are provided with positioning sleeve.
2. the centrifugal device for universal motor according to claim 1, it is characterized in that, the two ends of described fixed head with its center for symmetric points symmetry offers a pin-and-hole, described pin-and-hole internal fixtion has bearing pin, described centrifugal film is articulated with on described bearing pin, and described pin-and-hole is relative to the central point eccentric setting of fixed head.
3. the centrifugal device for universal motor according to claim 1, it is characterized in that, described motor rear end covers and offers mounting groove, and in described mounting groove and positioning sleeve, correspondence offers connecting hole, and positioning sleeve is fixed on motor rear end through positioning sleeve and covers by set bolt.
4. the centrifugal device for universal motor according to claim 1, is characterized in that, the outer end of described positioning sleeve is fixed with cover plate.
5. the centrifugal device for universal motor according to claim 2, it is characterized in that, the hinged end of described centrifugal film offers one " U " type breach, described " U " type breach both sides centrifugal film on correspondence offer hinge hole, the hinged end of described centrifugal film by " U " type breach is articulated with the two ends of described bearing pin.
6. the centrifugal device for universal motor according to claim 1, is characterized in that, the cross section of described fixed head is kidney-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901492.6A CN105375680A (en) | 2015-12-09 | 2015-12-09 | Centrifugal device for alternating current and direct current dual-purpose motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510901492.6A CN105375680A (en) | 2015-12-09 | 2015-12-09 | Centrifugal device for alternating current and direct current dual-purpose motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105375680A true CN105375680A (en) | 2016-03-02 |
Family
ID=55377583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510901492.6A Pending CN105375680A (en) | 2015-12-09 | 2015-12-09 | Centrifugal device for alternating current and direct current dual-purpose motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105375680A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2675170Y (en) * | 2004-01-08 | 2005-02-02 | 宝鸡秦新电气有限公司 | Centrifugal type overrunning governor and dually controllable multiplexing steady stopping device |
| CN201337768Y (en) * | 2008-12-25 | 2009-11-04 | 胡玉新 | Reciprocating descent control device |
| CN103697076A (en) * | 2013-12-24 | 2014-04-02 | 天长缸盖有限公司 | Centrifugal master-slave exchange clutch |
| CN203728357U (en) * | 2014-02-25 | 2014-07-23 | 上海市建筑科学研究院科技发展有限公司 | Low speed anti-drop safety device |
| CN104485776A (en) * | 2014-12-28 | 2015-04-01 | 武汉联创恒业科技有限公司 | Automatic speed limiting motor and crane |
| CN204458909U (en) * | 2014-12-29 | 2015-07-08 | 浙江海洋学院 | Speed limit bearing |
| CN104863531A (en) * | 2015-04-10 | 2015-08-26 | 西南石油大学 | Revolving speed limiting impulse sprinkler for well cleanout |
| CN205231932U (en) * | 2015-12-09 | 2016-05-11 | 无锡江南奕帆电力传动科技股份有限公司 | A centrifugal device for universal motor |
-
2015
- 2015-12-09 CN CN201510901492.6A patent/CN105375680A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2675170Y (en) * | 2004-01-08 | 2005-02-02 | 宝鸡秦新电气有限公司 | Centrifugal type overrunning governor and dually controllable multiplexing steady stopping device |
| CN201337768Y (en) * | 2008-12-25 | 2009-11-04 | 胡玉新 | Reciprocating descent control device |
| CN103697076A (en) * | 2013-12-24 | 2014-04-02 | 天长缸盖有限公司 | Centrifugal master-slave exchange clutch |
| CN203728357U (en) * | 2014-02-25 | 2014-07-23 | 上海市建筑科学研究院科技发展有限公司 | Low speed anti-drop safety device |
| CN104485776A (en) * | 2014-12-28 | 2015-04-01 | 武汉联创恒业科技有限公司 | Automatic speed limiting motor and crane |
| CN204458909U (en) * | 2014-12-29 | 2015-07-08 | 浙江海洋学院 | Speed limit bearing |
| CN104863531A (en) * | 2015-04-10 | 2015-08-26 | 西南石油大学 | Revolving speed limiting impulse sprinkler for well cleanout |
| CN205231932U (en) * | 2015-12-09 | 2016-05-11 | 无锡江南奕帆电力传动科技股份有限公司 | A centrifugal device for universal motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160302 |
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| RJ01 | Rejection of invention patent application after publication |