CN101293614A - Escalator or moving pavement driving device - Google Patents
Escalator or moving pavement driving device Download PDFInfo
- Publication number
- CN101293614A CN101293614A CNA2007100975266A CN200710097526A CN101293614A CN 101293614 A CN101293614 A CN 101293614A CN A2007100975266 A CNA2007100975266 A CN A2007100975266A CN 200710097526 A CN200710097526 A CN 200710097526A CN 101293614 A CN101293614 A CN 101293614A
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- actuating device
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- gear case
- secondary gear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The invention discloses an escalator or automatic sidewalk driving device, comprising a permanent-magnetic synchronous motor and a transmission device; the transmission device comprises a primary gearbox and a secondary gearbox; an output shaft of the secondary gearbox is axially connected with a main transmission shaft. The secondary gearbox adopts a crossing engagement type of a spiral bevel gear pair structure and transmits the output torque of the primary gearbox. The solar wheel shaft of the primary planetary gearbox has the same axis as the central shaft of a driving motor; the output axis line of the secondary gearbox is vertical to the axis line of the solar wheel shaft, so as to lead the primary planetary gearbox and the secondary gearbox to be installed, debugged and dismounted in a fission way and lead the driving device to be connected at the end side of the main transmission shaft of a step chain wheel. The escalator driving device of the invention adopts a two-step full-gear transmission structure, has little mechanical abrasion, long service life and high transmission efficiency, and realizes the effects of escalator driving multi-item efficacy energy saving.
Description
Technical field
The present invention relates to a kind of actuating device, relate in particular to a kind of escalator or moving sidewalk actuating device.
Background technology
Traditional escalator or moving sidewalk actuating device generally are made of motor partial sum driving device, and driving device is made up of the slotting worm gear reducer mechanism of snail, secondary sprocket wheel speed reduction gearing.
This reduction gear apparatus is for adopting the worm and wormwheel structure of frictional transmission, and its drive motor is an asynchronous motor.Because the restriction of output torque, it must rely on the secondary sprocket wheel to slow down again to promote moment, can reduce output torque in its moderating process.The mechanical wear of chain sprocket also can increase the shake of Escalator simultaneously.
The patentee is the wide day Elevator Industry Company in Guangzhou, the applying date is on September 1st, 2000, application number is 00239340.9, Granted publication number is CN2438699Y, the utility model patent that name is called " Power Drive Unit of escalator or moving sidewalk " discloses the main frame that a kind of driving device is the secondary planet slowing-down structure, the advantage of this actuating device and the comparison of traditional staircase actuating device is: compact conformation, driving efficiency height, energy-conservation, do not have the secondary sprocket wheel, thereby stable drive.
Its weak point is as follows: because its drive motor docks with the ladder sprocket wheel main driving axle with the speed reduction gearing with secondary planetary gear case, and on same axial line, because of the axial dimension of actuating device self structure long, and occupied the only remaining space in staircase chain wheel end main couple edge, the outside fully, it and the restriction of the flange seam size that is limited by the epicyclic gear box output shaft being connected of sprocket wheel main driving axle, the radius of turn of the semi-circular guide-track groove of its chain must strengthen, thereby it must select the sprocket wheel (as: 18 teeth or 20 teeth) of the big pitch diameter of the big number of teeth for use.
The Assembly ﹠Disassembly of meanwhile this staircase actuating device must be provided with the special-purpose window that main frame is used that hangs in from the staircase side, thereby uses and installation is restricted in that traditional staircase and girder of existing conventional (16 tooth) is structural.
The staircase actuating device that conventional worm worm gear and secondary sprocket wheel combine exists that energy consumption is big, efficient is low, mechanical wear is big, operation life is short, the defective on the drive mechanism.
Summary of the invention
The invention provides a kind of compact conformation, driving efficiency height, staircase actuating device or moving sidewalk actuating device that energy consumption is low, solved above-mentioned technical matters.
According to the present invention, described escalator or moving sidewalk actuating device comprise drive motor and driving device, and driving device comprises one-level gear case and secondary gear case, and the output shaft of secondary gear case is connected with main driving axle is coaxial.Described secondary gear case adopts the right-angled crossing engagement system of spiral bevel auxiliary structure, holds the output torque that passes the primary planet pinion case.The sun wheel shaft of primary planet pinion case and the center shaft of drive motor are coaxial, and the output axis of secondary gear case and the axis of described sun wheel shaft are orthogonal.
The output axle head of actuating device of the present invention is equipped with pattern chain flange terminal pad, and by top connection screw be installed in the main driving axle axle head on three-dimensional flange terminal pad on the butt joint seam carry out coaxial the connection.Finish the torque output of staircase transmission main frame, thereby drive step pedal sprocket wheel and handrail drive sprocket synchronous, smooth running on same axis by main driving axle.
Main machine structure compactness of the present invention, the gear case bodily form is flat elongated, is suitable for being installed in the narrow space position of staircase, ladder sprocket wheel one side.
Because main frame is to finish axial the connection by the flange seam with the butt joint of transmission shaft, thereby the separating of main frame, also can be by the screw that ejects on the three-dimensional flange terminal pad, utilize liftout bolt, dismounting disengage gears case is in connecting seam, main frame need not via axially shifting out truss, and it can shift out railway carriage or compartment, the storehouse platform of main frame along the sprocket wheel radial orientation.
So staircase transmission main frame of the present invention is highly suitable for the truss structure mounting condition of traditional staircase.
Staircase driving device of the present invention has replaced traditional staircase with secondary al-gear drive structure, plugs in the main drive of worm gear reducer mechanism, secondary sprocket wheel speed reduction gearing composition with snail.Thereby staircase driving device of the present invention than conventional transmission device in transmission process, mechanical wear is few, operation life is long, driving efficiency is high.
The drive motor that disposes for actuating device of the present invention is a permanent magnetism frequency-conversion high-speed synchronous dynamo, the electrical efficiency height, power factor approaches 1, utilizing frequency conversion speed-adjusting system to make closed loop drives, its drive system is at the variation of staircase load, change the running current of motor in good time, can also nobody take advantage of the load state that carries to change running velocity according to the people is arranged, drive the energy-conservation effect of multinomial effect thereby reach staircase.The asynchronous dynamo average effiiciency of tradition staircase configuration is lower, and no-load run current ratio permagnetic synchronous motor exceeds 5-6 doubly.
The design size of novel staircase drive mechanism and design concept are keeping under traditional staircase and girder structure mounting condition, are under the situation at traditional staircase highly energy-consuming, the accurate compact high efficiency energy saving actuating device of exploitation.
Description of drawings
Fig. 1 is the section-drawing of staircase actuating device first embodiment of the present invention, and wherein one-level gear case and secondary gear case are whole and are connected.
Fig. 2 is the generalized section of staircase actuating device second embodiment of the present invention, and wherein the one-level gear case is split with the secondary gear case and is connected.
The specific embodiment
Main Reference numeral of the present invention is as follows
A1, the internally toothed annulus housing; A2, the one-level lip packing; A3, the front cone gear; A4, pinion carrier; A5, motor housing; A6, sun wheel shaft; A7, the motor front bearing; A8, mechanical seal; A9, stator winding; A10, the sun wheel shaft tight fixed bolt; A11, the motor rear bearing; A12 pays the shaft extension bolt of rear end plate; A13, the motor bonnet; A14, brake wheel; A15, back hollow wheels; A16 pays shaft extension; A17, coder; A18, handwheel; A19, rotor three connects the female splines body; A20, the brake wheel tie bolt; A21, p-m rotor; A22, drg; A23, back seal cover cap; A24, back conical bearing; A25, back seal cover cap bolt of rear end plate; A26, planetary wheel; A27, tie bolt; A28, planet wheel spindle; A29 annotates the draining bolt; A30, two-way spline adapter shaft; A31, tie bolt.
B1, the right side sprocket assemblies; B2, the handrail drive sprocket; B3, locating bush; B4, main driving axle; B5, flange bolt; B6, fastening cover plate; B7, the three-dimensional mounting flange; B8, spline flange terminal pad; B9, the protecgulum tie bolt; B10, the main shaft lip packing; B11, secondary roller box protecgulum; B12, the secondary gear casing; B13, the bonnet tie bolt; B14, secondary tooth case bonnet; B15, the bevel gear wheel tie bolt; B16, bearing for output shaft rear; B17, large bevel gear shaft; B18, front bearing, output shaft; B19, large conical gear; B20, small conical gear; B21, the bearing locating bush; B22, bevel pinion front bearing; B23, the gap bridge tie bolt; B24, bevel pinion lip bearing; B25, two-way spline housing; B26, binding bolt; B27, the gap bridge adapter sleeve; B28, the secondary lip packing; B29, ladder sprocket wheel.
As shown in Figure 1, actuating device of the present invention comprises drive motor and driving device.Described drive motor is a permagnetic synchronous motor, and driving device comprises primary planet pinion case and secondary gear case, and the output shaft of secondary gear case is connected with main driving axle B4 is coaxial.Described one-level gear case and secondary gear case adopt primary planet pinion speed reduction gearing and deuterostrophies conical gear reducer structure respectively.Described permagnetic synchronous motor comprises stator winding A9 and p-m rotor A21.P-m rotor A21 is connected respectively on motor front bearing A7 and the motor rear bearing A11 in its front-end and back-end.
The primary planet pinion speed reduction gearing comprises the primary planet pinion case, and the primary planet pinion case comprises planetary wheel A24, A26, pinion carrier A4 and sun wheel shaft A6.Pinion carrier is bearing on the internally toothed annulus housing A1 by front cone bearing A3.Be bearing on the seal cover cap A23 of back by back conical bearing A24 with planetary gear carrier bonded assembly pinion carrier bonnet.The sun wheel shaft A6 of primary planet pinion case and the center shaft of permagnetic synchronous motor are coaxial, and this center shaft connects female splines body A19 by rotor three and is connected on the p-m rotor A21.
Deuterostrophies conical gear reducer structure comprises the secondary gear case, and the output shaft of secondary gear case is connected with main driving axle B4.Described secondary gear case adopts the right-angled crossing engagement system of spiral bevel auxiliary structure, holds the output torque that passes the primary planet pinion case.The axis of the output shaft B17 of secondary gear case and the axis of described sun wheel shaft A6 are orthogonal.The secondary gear case comprises large conical gear B19 and small conical gear B20 and large conical gear axle B17 and small conical gear axle.Large conical gear axle B17 is bearing in respectively on secondary gear case protecgulum B11 and the secondary gear case bonnet B14 by front bearing, output shaft B18 and bearing for output shaft rear B16.
The output axle head of actuating device of the present invention is equipped with pattern chain flange terminal pad B8, and by top connection screw be installed in main driving axle B4 axle head on three-dimensional flange terminal pad B7 on the butt joint seam carry out coaxial the connection.Finish the torque output of staircase transmission main frame, thereby drive step pedal sprocket wheel B29 and handrail drive sprocket B2 synchronous, smooth running on same axis by main driving axle B4.
One-level gear case of the present invention is generically and collectively referred to as " A " part and is generically and collectively referred to as " B " part with the secondary gear case.The transmission of connection between them and torque each other relies on gap bridge adapter sleeve B27 and gap bridge tie bolt A31 and finishes with two-way castellated shaft A30, thereby makes the I and II gear case be combined into the whole transmission device parts with imput shaft and driven axle.
Permagnetic synchronous motor of the present invention and being connected of planetary wheel casing are to dock with the seam of the back seal cover cap A23 of epicyclic gear box rear side and locate by the flange screw on the internally toothed annulus housing A1, rely on the fastening of tie bolt A27, thereby connect as one.
On the hollow body bearing position after the inner ring of motor front bearing A7 is fixed on the seal cover cap A23 rear end.Back seal cover cap A23 inboard and outside difference support fixation pinion carrier A4, the outer ring of back conical bearing A25 and the inner ring of rotor front bearing A7.
Back seal cover cap is the part of a bidirectional stress, and the inboard carries the torque load of pinion carrier, and rear side then bears rotor A21 front end torque load.
Step-like hollow axis hole is processed in the rear end of back seal cover cap A23, lays the obturator of deciding of mechanical seal A8 in the aperture.Central gear shaft A6 tightens the rotating seal that is overlapping mechanical seal A8 after passing back seal cover cap A23 at axle journal.Central gear shaft A6 connects on the female splines body A19 to be fixed in rotor three with spline, forms set of gears case seal oil system.
Therefore gear case is a dynamo-electric unification, the drive disk assembly of compact conformation.
Motor rear bearing A11 of the present invention is fixed on by on the part that is referred to as back hollow shaft A15, and its axle center is a hollow structure, and the motor countershaft is stretched A16 and passed from its center.Countershaft is stretched and is mounted with coder A17, manual two parts of jigger wheel A18.
Brake wheel A14 of the present invention and rotor A21 are connected, and are that its position is in motor bonnet A14 inside by fastening the finishing of seam butt joint and brake wheel tie bolt A20.It and magnet stopper A22 have formed the brake system of staircase, and the rotor inertia of continuous running is provided for rotor again.
Secondary gear case of the present invention is connected with transmission shaft B4's, be by being installed in an external diameter seam that is referred to as on the female splines flange B9 in large conical gear adapter shaft B17 spline axial end, with an inner stopper that is referred to as three-dimensional mounting flange B7, make it to be coaxial docking and connect and fastening, with transmitting torque by flange bolt B5.
Main machine structure compactness of the present invention, the gear case bodily form is flat elongated, wherein can partial installation between primary planet pinion case and the secondary gear case, debugging and dismounting.Described main machine structure is suitable for being installed in the distolateral narrow space of staircase, ladder sprocket wheel B29 main driving axle.
So staircase transmission main frame of the present invention is highly suitable for the truss structure mounting condition of traditional staircase.
Staircase driving device of the present invention has replaced traditional staircase with secondary al-gear drive structure, plugs in the main drive of worm gear reducer mechanism, secondary sprocket wheel deceleration composition with snail.Thereby staircase driving device of the present invention than conventional drive device in transmission process, mechanical wear is few, operation life is long, driving efficiency is high.
Transmission main frame of the present invention can be installed in any side of ladder sprocket wheel.And can remove according to the needs of mounting process, because the connecting bore position on three-dimensional mounting flange B7 is processed with bolt and ejects the hole, it can carry out axial separation with three-dimensional mounting flange B7 and female splines flange B8 by means of liftout bolt.The gear case that breaks away from main driving axle B4 can be from the lateral position space, along the sprocket wheel radial orientation, moves on the platform of sprocket wheel Hatch Opening position of position spaciousness.Because main frame is to finish axial the connection by the flange seam with the butt joint of transmission shaft, thereby separating of main frame need not via axially shifting out truss.
The drive motor that disposes for actuating device of the present invention is a permanent magnetism frequency-conversion high-speed synchronous dynamo, electrical efficiency is up to 92-94%, power factor approaches 1, utilizing frequency conversion speed-adjusting system to make closed loop drives, its drive system is at the variation of staircase load, change the running current of motor in good time, can also nobody take advantage of the load state that carries to change running velocity according to the people is arranged, drive the energy-conservation effect of multinomial effect thereby reach staircase.The asynchronous dynamo average effiiciency of tradition staircase configuration only is 76%, and no-load run current ratio permagnetic synchronous motor exceeds 5-6 doubly.
As shown in Figure 2, primary planet pinion case of the present invention initiatively drop-gear box can also carry out split with secondary gear drop-gear box involuntary speed reduction case and be connected.Gear case partial installation between them, they rely on joint coupling to connect and give secondary gear drop-gear box involuntary speed reduction case with the transmission of torque of primary planet pinion case active drop-gear box.
Be understandable that staircase of the present invention drives AC permanent magnet synchronous motor and can also use the AC asynchronous motor of similar volume size, same rank power, torque to be drive force source.This asynchronous dynamo can directly be imported 380 volts of electrical network power-frequency voltage power supplys of industry, with the operation of three phase mains direct drive Escalator.
Claims (12)
1. escalator or moving sidewalk actuating device, comprise drive motor and driving device, driving device comprises primary planet pinion case and secondary gear case, the output shaft of secondary gear case and coaxial connection of main driving axle (B4), it is characterized in that, described secondary gear case adopts the right-angled crossing engagement system of spiral bevel auxiliary structure, hold the output torque that passes the primary planet pinion case, the sun wheel shaft of primary planet pinion case and the center shaft of drive motor are coaxial, the output axis of secondary gear case and the axis of described sun wheel shaft are orthogonal, so that can partial installation between primary planet pinion case and the secondary gear case, debugging and dismounting, and make described actuating device be connected in the distolateral of ladder sprocket wheel main driving axle.
2. actuating device as claimed in claim 1, it is characterized in that, described drive motor and being connected of planetary wheel casing are to dock with the seam of the back seal cover cap (A23) of epicyclic gear box rear side and locate by the flange screw on the internally toothed annulus housing (A1), rely on the fastening of tie bolt (A27), thereby connect as one.
3. actuating device as claimed in claim 1, it is characterized in that, on the hollow body bearing position after the inner ring of the front bearing of described drive motor (A7) is fixed on seal cover cap (A23) rear end, back seal cover cap (A23) inboard and outside difference support fixation pinion carrier (A4), the outer ring of back conical bearing (A25) and the inner ring of rotor front bearing (A7).
4. actuating device as claimed in claim 3 is characterized in that, described back seal cover cap (A23) is the part of a bidirectional stress, and the inboard carries the torque load of pinion carrier, and rear side then bears rotor (A21) front end torque load.
5. actuating device as claimed in claim 3, it is characterized in that, step-like hollow axis hole is processed in the rear end of described back seal cover cap (A23), lay the obturator of deciding of mechanical seal (A8) in the aperture, after central gear shaft (A6) passes back seal cover cap (A23), tighten the rotating seal that is overlapping mechanical seal (A8) at axle journal, central gear shaft (A6) connects on the female splines body (A19) to be fixed in rotor three with spline, forms set of gears case seal oil system.
6. actuating device as claimed in claim 1, it is characterized in that, described actuating device also comprises hollow shaft (A15), the rear bearing of described drive motor (A11) is fixed on the back hollow shaft (A15), the axle center of hollow shaft (A15) is a hollow structure, the motor countershaft is stretched (A16) and is passed from its center, and countershaft is stretched and is mounted with coder (A17), manual two parts of jigger wheel (A18).
7. actuating device as claimed in claim 1, it is characterized in that, described actuating device has brake wheel (A14), brake wheel (A14) and being connected of rotor (A21) are fastening the finishing by seam butt joint and brake wheel tie bolt (A20), the position of brake wheel (A14) is in motor bonnet (A13) inside, it and magnet stopper (A22) have formed a brake system, and the rotor inertia of continuous running is provided for rotor again.
8. actuating device as claimed in claim 1, it is characterized in that, between described primary planet pinion case and the secondary gear case be connected and the transmission of torque each other relies on gap bridge adapter sleeve (B27) and gap bridge tie bolt (A31) and finishes with two-way castellated shaft (A30), thereby make the I and II gear case be combined into whole transmission device parts with imput shaft and driven axle.
9. actuating device as claimed in claim 1, it is characterized in that, described secondary gear case is by be installed in the external diameter seam on the female splines flange (B9) in large conical gear adapter shaft (B17) spline axial end with being connected of main driving axle (B4), inner stopper with three-dimensional mounting flange (B7), make it to be coaxial docking and connect and fastening, with transmitting torque by flange bolt (B5).
10. actuating device as claimed in claim 1, it is characterized in that, described actuating device is installed in any side of ladder sprocket wheel, connecting bore position on three-dimensional mounting flange (B7) is processed with bolt and ejects the hole, by means of liftout bolt, three-dimensional mounting flange (B7) and female splines flange (B8) can be carried out axial separation, thereby the gear case that will break away from main driving axle B4, from the lateral position space, along the sprocket wheel radial orientation, move on the platform of sprocket wheel Hatch Opening position of position spaciousness.
11. actuating device as claimed in claim 1 is characterized in that, the primary planet pinion case of described actuating device can also carry out split with the secondary gear case and be connected the gear case partial installation between them.
12. actuating device as claimed in claim 11 is characterized in that, described primary planet pinion case relies on joint coupling to be connected with the secondary gear case, to give the secondary gear case with the transmission of torque of primary planet pinion case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100975266A CN101293614B (en) | 2007-04-26 | 2007-04-26 | Escalator or moving pavement driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100975266A CN101293614B (en) | 2007-04-26 | 2007-04-26 | Escalator or moving pavement driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101293614A true CN101293614A (en) | 2008-10-29 |
| CN101293614B CN101293614B (en) | 2011-03-23 |
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ID=40064211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100975266A Expired - Fee Related CN101293614B (en) | 2007-04-26 | 2007-04-26 | Escalator or moving pavement driving device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101293614B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102365226A (en) * | 2009-04-03 | 2012-02-29 | 奥蒂斯电梯公司 | Adjustable bracket for step flange cover |
| CN102745582A (en) * | 2012-07-18 | 2012-10-24 | 广州广日电梯工业有限公司 | Power drive device for escalator or moving walk |
| CN102795531A (en) * | 2012-08-15 | 2012-11-28 | 柳州凯迪电梯设备有限责任公司 | Power transmission device for escalators |
| CN103350944A (en) * | 2013-08-02 | 2013-10-16 | 黄民英 | Power driving device of escalator |
| CN105658567A (en) * | 2013-10-11 | 2016-06-08 | 通力股份公司 | Power transmission system for people mover and people mover |
| CN106276557A (en) * | 2015-06-26 | 2017-01-04 | 东芝电梯株式会社 | Passenger conveyors |
| US10308482B2 (en) | 2015-05-06 | 2019-06-04 | Otis Elevator Company | Tread element for people conveyor comprising a cantilever arm |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438699Y (en) * | 2000-09-01 | 2001-07-11 | 广州广日电梯工业有限公司 | Dynamic driving apparatus for escalator or moving walk |
| DE10127587A1 (en) * | 2001-06-06 | 2002-12-19 | Kone Corp | Escalator drive system linked to drive components by variable diameter gear |
| JP2006111380A (en) * | 2004-10-13 | 2006-04-27 | Hitachi Ltd | Drive unit for passenger conveyor |
-
2007
- 2007-04-26 CN CN2007100975266A patent/CN101293614B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102365226A (en) * | 2009-04-03 | 2012-02-29 | 奥蒂斯电梯公司 | Adjustable bracket for step flange cover |
| CN102365226B (en) * | 2009-04-03 | 2014-03-05 | 奥蒂斯电梯公司 | Adjustable bracket for step flange cover |
| US8757350B2 (en) | 2009-04-03 | 2014-06-24 | Otis Elevator Company | Adjustable bracket for step flange cover |
| CN102745582A (en) * | 2012-07-18 | 2012-10-24 | 广州广日电梯工业有限公司 | Power drive device for escalator or moving walk |
| CN102745582B (en) * | 2012-07-18 | 2014-04-30 | 广州广日电梯工业有限公司 | Power drive device for escalator or moving walk |
| CN102795531A (en) * | 2012-08-15 | 2012-11-28 | 柳州凯迪电梯设备有限责任公司 | Power transmission device for escalators |
| CN103350944A (en) * | 2013-08-02 | 2013-10-16 | 黄民英 | Power driving device of escalator |
| CN103350944B (en) * | 2013-08-02 | 2015-07-15 | 黄民英 | Power driving device of escalator |
| CN105658567A (en) * | 2013-10-11 | 2016-06-08 | 通力股份公司 | Power transmission system for people mover and people mover |
| US10308482B2 (en) | 2015-05-06 | 2019-06-04 | Otis Elevator Company | Tread element for people conveyor comprising a cantilever arm |
| CN106276557A (en) * | 2015-06-26 | 2017-01-04 | 东芝电梯株式会社 | Passenger conveyors |
| CN106276557B (en) * | 2015-06-26 | 2018-11-09 | 东芝电梯株式会社 | Passenger conveyors |
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|---|---|
| CN101293614B (en) | 2011-03-23 |
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Granted publication date: 20110323 Termination date: 20130426 |