CN104377088A - Electric operating mechanism of breaker - Google Patents
Electric operating mechanism of breaker Download PDFInfo
- Publication number
- CN104377088A CN104377088A CN201410649011.2A CN201410649011A CN104377088A CN 104377088 A CN104377088 A CN 104377088A CN 201410649011 A CN201410649011 A CN 201410649011A CN 104377088 A CN104377088 A CN 104377088A
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- CN
- China
- Prior art keywords
- worm
- reduction gearing
- operating mechanism
- meshed
- casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses an electric operating mechanism of a breaker. The electric operating mechanism comprises a box, a motor is arranged on one side of the box, and a rotor shaft of the motor extends into the box; a worm, a worm wheel, a reduction gear set and an output shaft are sequentially arranged in the box; the rotor shaft is in transmission connection with the worm through a deltoid body; the worm is meshed with the worm wheel; the worm wheel is meshed with the reduction gear set; the reduction gear set is in transmission connection with the output shaft, and the two ends of the worm are both fixed in the box in the radial direction through bearings. According to the electric operating mechanism of the breaker, the two ends of the worm are both fixed in the box in the radial direction through the bearings, bearing holes in the two ends of the worm are formed in the same box, so the bearing holes can be easily machined in a concentric mode; the worm and the rotor shaft are independent relative to each other and are connected through the deltoid body, so the meshing center distance of the worm and the worm wheel can be well guaranteed, transmission reliability is enhanced, the meshing efficiency of the worm wheel and the worm is improved, and the service life of the worm wheel and the worm is prolonged; abnormal noise is reduced, and machining and assembling are convenient.
Description
Technical field
The present invention relates to a kind of circuit breaker, particularly relate to a kind of electric operating mechanism of circuit-breaker.
Background technology
In distribution apparatus killer switch, often can need to use motor-operating mechanism, refer to shown in Fig. 1, Fig. 1 is the structural representation of existing a kind of electric operating mechanism of circuit-breaker, it comprises motor 10, rotor axis of electric 11, worm screw 12, sliding bearing 13, worm gear 14, train of reduction gears 15 and output shaft 16, power is passed to worm screw 12 by pin 17 by rotor axis of electric 11, train of reduction gears 15 is passed to again by worm gear 14, breaker main shaft is exported to again by output shaft 16, but the installing space leaving this kind of operating mechanism for is often very limited, therefore the armature spindle of motor does thinner usually, and worm screw is relatively thick, Split type structure is made for the manufacture usual worm screw of consideration easy to assembly and cost-saving aspect and rotor axis of electric, the armature spindle of motor is connected by pin with between worm screw, worm screw normally cantilever, its radial location is mainly by armature spindle, what also have is fixing away from motor side one sliding bearing radial direction.
But in concrete use procedure, existing above-mentioned motor-operating mechanism due to worm screw shaft extension longer, accumulated error on the one hand by motor front and rear cover dead eye and positioning boss each side affects, the axiality of worm screw other end sliding bearing and armature spindle is not fine, and therefore usually the cooperation of worm screw and armature spindle or worm screw are done more loose with the cooperation of sliding bearing; On the other hand because worm screw is more elongated, on armature spindle, shaft extension is longer, when engaging by the impact of axial force, radial load and tangential force, worm screw center line always swings back and forth up and down, the perpendicularity of worm screw center line and worm gear center line and centre-to-centre spacing are difficult to ensure, therefore always there will be abnormal sound when engaging, also can have a strong impact on the life-span of worm and gear.
Summary of the invention
The object of the present invention is to provide a kind of electric operating mechanism of circuit-breaker, it has, and transmission efficiency is high, long service life, be convenient to process and assemble and the low feature of noise, to solve the problems referred to above that in prior art, electric operating mechanism of circuit-breaker exists.
For reaching this object, the present invention by the following technical solutions:
A kind of electric operating mechanism of circuit-breaker, it comprises casing, the side of described casing is provided with motor, the armature spindle of described motor stretches in described casing, and be disposed with worm screw, worm gear, train of reduction gears and output shaft in described casing, described armature spindle is connected with worm-drive by flat side, described worm and wheel is meshed, described train of reduction gears is meshed with the gear shaft installing worm gear, described train of reduction gears is in transmission connection output shaft, and the two ends of described worm screw are all fixed in described casing by bearing radial direction.
Especially, one end of described worm screw is fixed on casing by deep groove ball bearing radial direction, the other end is fixed on casing by sliding bearing radial direction, due to motor and worm screw always one direction rotate, the axial force that worm screw produces always points to deep groove ball bearing, two ends, described deep groove ball bearing outer ring clamp, and worm screw is pressed on inner ring by the shaft shoulder, and therefore described worm screw can accomplish axial restraint.
Especially, described train of reduction gears comprises the first reduction gearing, the second reduction gearing and the 3rd reduction gearing, described first reduction gearing is meshed with described worm gear, described second reduction gearing is meshed with the gear shaft installing the first reduction gearing, described 3rd reduction gearing is meshed with the gear shaft installing the second reduction gearing, and described 3rd reduction gearing connects output shaft.
Beneficial effect of the present invention is, compared with prior art described electric operating mechanism of circuit-breaker has the following advantages:
1) two ends of worm screw are all fixed in described casing by bearing radial direction, and the dead eye at worm screw two ends, on same casing, is easily processed into one heart, therefore worm screw can be fixed well according to meshed center distance;
2) worm screw and armature spindle relatively independent, both are connected by flat side, can ensure the meshed center distance of worm and wheel well, enhance reliable transmission, improve worm and gear meshing efficiency and useful life; Reduce abnormal sound, process and assemble is convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing a kind of electric operating mechanism of circuit-breaker;
Fig. 2 is the profile of the electric operating mechanism of circuit-breaker that the specific embodiment of the invention 1 provides;
Fig. 3 is the structural representation in the electric operating mechanism of circuit-breaker casing that provides of the specific embodiment of the invention 1.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Refer to shown in Fig. 2 and Fig. 3, in the present embodiment, a kind of electric operating mechanism of circuit-breaker comprises casing 20, the side of described casing 20 is provided with motor 21, the armature spindle 22 of described motor 21 stretches in described casing 20, and be disposed with worm screw 23 in described casing 20, worm gear 24, train of reduction gears and output shaft 25, described armature spindle 22 is in transmission connection with worm screw 23 by flat side 26, described worm screw 23 is meshed with worm gear 24, described worm gear 24 is meshed with described train of reduction gears, described train of reduction gears is in transmission connection output shaft 25, one end of described worm screw 23 is fixed on casing 20 by deep groove ball bearing 27 radial direction, the other end is fixed on casing 20 by sliding bearing 28 radial direction.
Described train of reduction gears comprises the first reduction gearing 29, second reduction gearing 30 and the 3rd reduction gearing 31, described first reduction gearing 29 is meshed with the gear shaft installing worm gear 24, described second reduction gearing 30 is meshed with the gear shaft installing the first reduction gearing 29, described 3rd reduction gearing 31 is meshed with the gear shaft installing the second reduction gearing 30, and described 3rd reduction gearing 31 connects output shaft 25.
During work, power is passed to worm screw 23 by flat side 26 by the armature spindle 22 of motor, then passes to train of reduction gears by worm gear 24 and worm screw 23 engagement, exports to breaker main shaft finally by output shaft 25.
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 (3)
1. an electric operating mechanism of circuit-breaker, it comprises casing, the side of described casing is provided with motor, the armature spindle of described motor stretches in described casing, it is characterized in that, worm screw, worm gear, train of reduction gears and output shaft is disposed with in described casing, described armature spindle is connected with worm-drive by flat side, described worm and wheel is meshed, described worm gear is meshed with described train of reduction gears, described train of reduction gears is in transmission connection output shaft, and the two ends of described worm screw are all fixed in described casing by bearing radial direction.
2. electric operating mechanism of circuit-breaker according to claim 1, it is characterized in that, one end of described worm screw is fixed on casing by deep groove ball bearing radial direction, the other end is fixed on casing by sliding bearing radial direction, two ends, described deep groove ball bearing outer ring clamp, and worm screw is pressed on inner ring by the shaft shoulder.
3. electric operating mechanism of circuit-breaker according to claim 1 and 2, it is characterized in that, described train of reduction gears comprises the first reduction gearing, the second reduction gearing and the 3rd reduction gearing, described first reduction gearing is meshed with the gear shaft installing worm gear, described second reduction gearing is meshed with the gear shaft installing the first reduction gearing, described 3rd reduction gearing is meshed with the gear shaft installing the second reduction gearing, and described 3rd reduction gearing connects output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649011.2A CN104377088A (en) | 2014-11-14 | 2014-11-14 | Electric operating mechanism of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649011.2A CN104377088A (en) | 2014-11-14 | 2014-11-14 | Electric operating mechanism of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104377088A true CN104377088A (en) | 2015-02-25 |
Family
ID=52555935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410649011.2A Pending CN104377088A (en) | 2014-11-14 | 2014-11-14 | Electric operating mechanism of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104377088A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0546166B1 (en) * | 1991-06-28 | 1998-06-03 | Square D Company | Remote control circuit breaker |
| CN101070062A (en) * | 2006-05-09 | 2007-11-14 | 阿斯莫株式会社 | Wiper motor and wiper apparatus |
| CN104124113A (en) * | 2014-08-09 | 2014-10-29 | 无锡智卓电气有限公司 | Electric operating mechanism for miniature circuit breaker |
| CN204271005U (en) * | 2014-11-14 | 2015-04-15 | 无锡江南奕帆电力传动科技股份有限公司 | A kind of electric operating mechanism of circuit-breaker |
-
2014
- 2014-11-14 CN CN201410649011.2A patent/CN104377088A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0546166B1 (en) * | 1991-06-28 | 1998-06-03 | Square D Company | Remote control circuit breaker |
| CN101070062A (en) * | 2006-05-09 | 2007-11-14 | 阿斯莫株式会社 | Wiper motor and wiper apparatus |
| CN104124113A (en) * | 2014-08-09 | 2014-10-29 | 无锡智卓电气有限公司 | Electric operating mechanism for miniature circuit breaker |
| CN204271005U (en) * | 2014-11-14 | 2015-04-15 | 无锡江南奕帆电力传动科技股份有限公司 | A kind of electric operating mechanism of circuit-breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150225 |
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| RJ01 | Rejection of invention patent application after publication |