CN1477051A - Permanent magnetic synchronous motor driven automatic escalator and overspeed protection device for automatic pavement - Google Patents
Permanent magnetic synchronous motor driven automatic escalator and overspeed protection device for automatic pavement Download PDFInfo
- Publication number
- CN1477051A CN1477051A CNA031149073A CN03114907A CN1477051A CN 1477051 A CN1477051 A CN 1477051A CN A031149073 A CNA031149073 A CN A031149073A CN 03114907 A CN03114907 A CN 03114907A CN 1477051 A CN1477051 A CN 1477051A
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- CN
- China
- Prior art keywords
- speedup
- synchronous motor
- escalator
- overspeed protection
- protection device
- 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.)
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- Escalators And Moving Walkways (AREA)
Abstract
The present invention relates to an overspeed protection equipment for permosyn motor driven automatic escalator and automatic passenger footway. The equipment is formed from centrifugal weight, safe contact switch, speed-increasing transmission pair and speed-increasing disk. The speed-increasing disk is driven by permosyn motor, and the centrifugal weight is mounted on the speed-measuring disk, and said speed-measuring disk has the action of amplifying rotating speed relatively to permosyn motor, and at the same time is acted by utilizing centrifugal weight to trigger safe contact switch so as to attain the goal of brake-stopping automatic escalator and automatic passenger footway.
Description
Technical field
The present invention relates to a kind of with permagnetic synchronous motor driving escalator and moving sidewalk; realize escalator and moving sidewalk manufacturing and the device that requires about overspeed protection in the safety standard (for example EN115:1995 " manufacturing of escalator and moving sidewalk and installation specification ") is installed, it is applicable to escalator and moving sidewalk manufacture.
Background technology
At present, escalator and moving walk are made up of parts such as asynchronous motor, retarder, drgs, and the work capacity of making and assembling is all bigger.But the synchronous speed of asynchronous motor is higher, is generally 1500rpm or 1000rpm, to realize overspeed protection in the safety standard require more convenient.When adopting permasyn morot to drive escalator and moving walk, can save retarder, not only the fitting work amount is little, and noise is low, efficient is high.Because the low-speed permanent-magnet synchronous motor rotating speed is the end of than; generally at 100rpm; rotating speed is far below the rotating speed of asynchronous motor; if the overspeed protection switch is installed on its main shaft; can not produce enough centnifugal forces, move the contact that makes centrifugal weight drive safety switch, cuts off the power supply of electrical motor and drg; stop escalator and moving walk cause safety misadventure.
Summary of the invention
The purpose of this invention is to provide a kind of overspeed protection that permagnetic synchronous motor drives the realization safety requirements of escalator and moving sidewalk that is used for.
For achieving the above object, the method that the present invention adopts is: adopt suitable enlarger to make switch disconnect action, form by centrifugal weight, safety contact switch, speedup transmission, drg and speedup dish, permasyn morot is by the speedup transmission, make the centrifugal weight that is installed on the speedup dish obtain enough centnifugal forces, the trigger switch action, the power supply of cut-out permagnetic synchronous motor and drg, stop escalator and footway.
Description of drawings
Fig. 1 is that of overspeed protection device of the present invention implements illustration
Symbol: 1-permagnetic synchronous motor 2-big gear wheel 3-miniature gears 4-speedup dish
The centrifugal weight 6-of 5-switch 7-drg
Fig. 2 is that of overspeed protection device of the present invention implements illustration
The centrifugal weight 9-of symbol 1-permagnetic synchronous motor 2-speedup dish 3-sun wheel 4-planetary wheel 5-inner gear 6-pinion carrier 7-motor shaft 8-switch
The specific embodiment
See also shown in the accompanying drawing 1, overspeed protection device of the present invention is to be made of centrifugal weight, safety contact formula switch, speedup transmission and speedup dish.Wherein, one big gear wheel 2 is installed on permasyn morot 1 main shaft, and also be provided with a miniature gears 3 on the speedup dish 4, and 2 diameters of the big gear wheel on the permasyn morot 1 are greater than the diameter of the miniature gears on the speedup dish 43, centrifugal weight 5 is installed on the tachometer disc 4, and this speedup dish 4 passes through gear transmission by permasyn morot 1.
As seen from Figure 1, adopt this structure, these speedup dish 4 relative permasyn morot devices 1 have the rotating speed amplification, when if the rotating speed of permasyn morot 1 surpasses safe speed of rotation, pass through gear transmission, make the rotating speed of speedup dish 4 surpass several times of permasyn morot 1 rotating speeds, can make the centrifugal weight 5 that is installed on the speedup dish 4 obtain enough centnifugal forces, trigger switch 6 actions, cut off the power supply of permasyn morot 1 and drg 7, stop escalator and moving walk are realized safe operation.
See also shown in Figure 2ly, overspeed protection device of the present invention is made of centrifugal weight, safety contact formula switch, speedup transmission and speedup dish.Wherein, on the motor shaft 7 of permagnetic synchronous motor 1, be provided with one group of planet pinion, motor shaft 7 drives the rotation of pinion carrier 6, planetary wheel 4 not only meshes with inner gear 5, also with sun wheel 3 engagement, promptly planet gear 4 had both been done rotation and had also been revolved round the sun, and inner gear 5 is fixed, the rotating speed of sun wheel will reach several times of motor shaft like this, and speedup dish 2 connects by sun wheel 3 by key and drives.
As seen from Figure 2, adopt this structure, this speedup dish 2 is kept thinking about 1 with respect to permanent-magnet synchronous and is had the rotating speed amplification, if the rotating speed of permagnetic synchronous motor 1 surpasses when setting rotating speed, passes through planetary transmission, make the rotating speed of speedup dish 2 reach several times of permagnetic synchronous motor, and then make the centrifugal weight 8 that is installed on the speedup dish 2 obtain enough centnifugal forces, trigger switch 9 actions, the power supply of cut-out permagnetic synchronous motor 1 and drg 7, stop escalator and moving sidewalk are realized safe operation.
In sum, the inventor has reached the inventor's goal of the invention by adopting as above technical scheme, makes permagnetic synchronous motor drive escalator and moving sidewalk realization overspeed protection, meets the safety standard requirements in this field.
For those skilled in the art, obviously the present invention is not limited to above-mentioned example, and the present invention can change within the spirit and scope of the present invention.
Claims (4)
1. the present invention relates to the overspeed protection device that a kind of permagnetic synchronous motor drives escalator and moving sidewalk, it is characterized in that: overspeed protection realizes by safety contact.
2. permagnetic synchronous motor as claimed in claim 1 drives the overspeed protection device of escalator and moving sidewalk; it is characterized in that: constitute by centrifugal weight, switch, speedup transmission and speedup dish; the speedup dish is driven by the speedup transmission by permagnetic synchronous motor; centrifugal weight is installed on the speedup dish, and the speedup dish has the rotating speed amplification with respect to permagnetic synchronous motor.
3. permagnetic synchronous motor as claimed in claim 2 drives the overspeed protection device of escalator and moving sidewalk, it is characterized in that: the speedup revolute pair is and motor shaft out-of-alignment gear transmission.
4. permagnetic synchronous motor as claimed in claim 2 drives the overspeed protection device of escalator and moving sidewalk, it is characterized in that: the speedup revolute pair is the planetary transmission coaxial with motor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03114907 CN1235789C (en) | 2003-01-15 | 2003-01-15 | Permanent magnetic synchronous motor driven automatic escalator and overspeed protection device for automatic pavement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03114907 CN1235789C (en) | 2003-01-15 | 2003-01-15 | Permanent magnetic synchronous motor driven automatic escalator and overspeed protection device for automatic pavement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1477051A true CN1477051A (en) | 2004-02-25 |
| CN1235789C CN1235789C (en) | 2006-01-11 |
Family
ID=34152572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03114907 Expired - Lifetime CN1235789C (en) | 2003-01-15 | 2003-01-15 | Permanent magnetic synchronous motor driven automatic escalator and overspeed protection device for automatic pavement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1235789C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774734A (en) * | 2012-07-18 | 2012-11-14 | 杭州杰牌传动科技有限公司 | Overspeed protection device for reducer |
| CN106838185A (en) * | 2017-03-28 | 2017-06-13 | 南京高精船用设备有限公司 | The overload protection arrangement of slush pump gear-box |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007128245A1 (en) * | 2006-05-04 | 2007-11-15 | Otis Elevator Company | An overspeed protective device for escalator or moving walkway |
-
2003
- 2003-01-15 CN CN 03114907 patent/CN1235789C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102774734A (en) * | 2012-07-18 | 2012-11-14 | 杭州杰牌传动科技有限公司 | Overspeed protection device for reducer |
| CN106838185A (en) * | 2017-03-28 | 2017-06-13 | 南京高精船用设备有限公司 | The overload protection arrangement of slush pump gear-box |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1235789C (en) | 2006-01-11 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060111 |