CN104692226A - Delayed parking system and method for automatic escalator or moving walk - Google Patents
Delayed parking system and method for automatic escalator or moving walk Download PDFInfo
- Publication number
- CN104692226A CN104692226A CN201510019395.4A CN201510019395A CN104692226A CN 104692226 A CN104692226 A CN 104692226A CN 201510019395 A CN201510019395 A CN 201510019395A CN 104692226 A CN104692226 A CN 104692226A
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- China
- Prior art keywords
- switch
- brake
- parking
- relay
- moving sidewalk
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B29/00—Safety devices of escalators or moving walkways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B25/00—Control of escalators or moving walkways
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- Escalators And Moving Walkways (AREA)
Abstract
The invention discloses a delayed parking system for an automatic escalator or a moving walk. The system comprises a safety loop for sending a brake signal to a brake and a parking detection circuit and is further provided with a delayer triggered by the parking detection circuit, a first switch triggered by the safety loop, a second switch triggered by the delayer as well as a parking relay for controlling the brake, wherein a control end of the parking relay is connected with the first switch and the second switch in series to form a parking loop; and a normally-closed contact of the parking relay is connected with a work loop of the brake. The invention further discloses a delayed parking method. With the adoption of the delayed parking system and method, when the rotation speed of a host is reduced to a certain value or even zero in a stand-by state, the working brake performs brake contraction, and the abrasion of a brake shoe is reduced; meanwhile, when the automatic escalator and the moving walk break down in operation, the working brake can act immediately, and the operation safety of the automatic escalator and the moving walk is guaranteed.
Description
Technical field
The invention belongs to escalator and moving sidewalk design field, specifically relate to the delayed shutdown system and method for a kind of escalator or moving sidewalk.
Background technology
Escalator and moving sidewalk are the special equipments that a kind of load factor is very low, adopt the escalator of self-starting form and moving sidewalk to be considerable in economize energy and minimizing mechanical wear.Because frequency converter price is higher, therefore the escalator of power frequency self-starting and moving sidewalk are more and more is selected by people.
As shown in Figure 1, in existing stopping system, generally comprise and whether be in the safety return circuit 1 of normal operating condition for detecting escalator or moving sidewalk and whether run and detect for detecting escalator or moving sidewalk the parking testing circuit 2 whether motor run.
Safety return circuit 1 comprises multiple sensor, is arranged in escalator or moving sidewalk relevant position, for detecting the running state of escalator or each position of moving sidewalk or parts.
The main composition of parking testing circuit as shown in Figure 2, the normally closed contact of upcoming contact device KMU is in parallel with the normally closed contact of delta contactor KMF with the normally closed contact of the normally closed contact of descending contactless switch KMD contactless switch KMS in parallel, star-like, two shunt circuits connect to control shut down relay (drg relay) BY again coil whether electric.The contact of upcoming contact device KMU, descending contactless switch KMD, star-like contactless switch KMS and delta contactor KMF is in motor simultaneously and runs in control loop, by the instruction of master board, controls the running state of motor.When elevator normally runs, in the normally closed contact of upcoming contact device KMU and the normally closed contact of descending contactless switch KMD, one of them normally closed contact closes, and another one normally closed contact disconnects.The normally closed contact of star-like contactless switch KMS disconnects, and the normally closed contact of delta contactor KMF closes.
In prior art, the mouth of (shown in Fig. 1) safety return circuit 1 is connected with master board 12 input end, and a mouth of master board 12 is connected with the control coil of safety return circuit state-detection relay K BY; Parking testing circuit 2 mouth is connected with the control coil of shut down relay BY; The normally closed contact KBY-1 of safety return circuit state-detection relay K BY and the normally closed contact BY-1 of shut down relay BY is all linked in the control loop 4 of drg.When safety return circuit 1 detects the system failure, safety return circuit state-detection relay K BY action, brake coil 13 dead electricity, drg is braked immediately; When in setting-up time during unmanned boarding, escalator and moving sidewalk enter readiness for action, master board 12 transmits control signal to the contactless switch in parking testing circuit 2, close electrical motor, parking testing circuit 2 disconnects simultaneously, shut down relay BY action, brake coil 13 dead electricity, drg is braked immediately.
The escalator of above-mentioned existing braking mode and moving sidewalk in use can start frequently and stop ladder, in the market, escalator and moving sidewalk enter readiness for action moment, service brake just can band-type brake immediately, but now engine speed is still very high, the severe wear of brake shoe can be brought thus, there is very large potential safety hazard.
Summary of the invention
The invention provides the delayed shutdown system of a kind of escalator or moving sidewalk, ensure that escalator and the moving sidewalk of power frequency self-starting are converted to the moment of readiness for action by normal operating condition, by trigger delayer, realize the deferred action of service brake; Ensure the moment causing main frame power-off due to escalator and the operating fault of moving sidewalk, service brake is action immediately simultaneously.
A delayed shutdown system for escalator or moving sidewalk, comprises safety return circuit and the parking testing circuit for sending brake signal to drg, is also provided with:
By the delay timer that described parking testing circuit triggers;
By the first switch that described safety return circuit triggers;
By the second switch that described delay timer triggers;
For controlling the shut down relay of described drg, the control end of this shut down relay and the first switch, second switch parking loop in series, the performance loop of the normally closed contact access drg of described shut down relay.
Utilize technique scheme of the present invention, when safety return circuit breaks down, the first switch motion, the performance loop of drg disconnects, and drg is braked immediately.When escalator or moving sidewalk normally run enter readiness for action time, master board triggers parking testing circuit, and then trigger delayer, and after delay timer time delay completes, second switch action, the performance loop of drg disconnects, and drg is braked immediately.By delay timer, ensure that escalator or moving sidewalk slow down in delay time, when decelerating to setting value or deceleration is zero, drg action, thus the delay braking realizing drg.
As preferably, described delay timer and second switch are integrated into a slug relay; The control end access parking testing circuit of this slug relay, the normally closed contact of slug relay accesses described parking loop.The accurate control of described parking testing circuit to parking loop can be realized by slug relay.
As preferably, described first switch is relay, and the control end of this relay is connected with the mouth of described safety return circuit, and the normally closed contact of this relay accesses described parking loop.Select relay, the control of safety return circuit to parking loop can be realized.
As preferably, described parking loop is also in series with the 3rd switch, is also provided with the overspeed detection circuit for sending cut-off signals to the 3rd switch in delayed shutdown system.Adopt this technical scheme, when escalator or moving sidewalk overspeed, overspeed detection circuit sends control signal, and drg is preferentially braked, and ensures the safety of escalator or moving sidewalk.Overspeed detection circuit can select the simple entity circuit be made up of existing speed sensor and comparator.
As preferably, described parking loop is also in series with the 4th switch, is also provided with the reverse testing circuit for sending cut-off signals to the 4th switch in delayed shutdown system.Adopt this technical scheme, when escalator or moving sidewalk reverse speed operation, reverse testing circuit and send control signal, drg is preferentially braked, and ensures the safety of escalator or moving sidewalk further.Reverse testing circuit and can adopt the simple entity circuit be made up of the sensor of existing detection motor steering and comparator.
As preferably, be also in series with the 5th switch and two-stage time delay circuit in described parking loop, described two-stage time delay circuit comprises:
First delay timer, triggers by parking testing circuit;
Second delay timer, triggers by the first delay timer, and the mouth of the second delay timer is connected with the control end of the 5th switch, to five switch sends cut-off signals after carrying out time delay according to the coasting time preset.
Described coasting time generally according to permission coasting distance, is calculated by repeatedly simulated experiment, also can calculate based on experience value.Described coasting distance is generally determined according to GB or professional standard.
As preferably, described safety return circuit access master board, the first signal output port of master board connects the control end of the first switch; Described 3rd switch, the 4th switch, the 5th switch are all integrated into master board, and the secondary signal output port of master board connects parking loop.
In the present invention, the 3rd described switch, the 4th switch, the 5th switch, by software simulating, also by entity circuit realiration, or adopt software and hardware combining to realize.Described overspeed detection circuit, reverse testing circuit etc. all can select existing entity circuit, also can select to pass through software simulating.
Present invention also offers a kind of delayed shutdown method of escalator or moving sidewalk, by this parking method, when escalator or moving sidewalk enter readiness for action, the deferred action of service brake can be realized, reduce the wearing and tearing to brake shoe.
A kind of delayed shutdown method of escalator or moving sidewalk, comprise and detect safe condition and dead ship condition, when when safe condition and dead ship condition, any one meets trigger condition, drg is driven to brake, when safe condition meets trigger condition, drg is driven to brake at once; When dead ship condition meets trigger condition, after master control time delay, drg is driven to brake again.
As preferably, described detection dead ship condition comprises and detects drive motor state and step running state, when any one meets trigger condition when drive motor state and step running state, all thinks that dead ship condition meets trigger condition.In this technical scheme, described drive motor state refers to the state whether drive motor is running, and when drive motor is out of service, dead ship condition meets trigger condition; Described step running state refers to whether step is in uplink state or downstream state, when step run from uplink state or downstream state change into shut down state time, dead ship condition meets trigger condition.In the present invention, when sensor detects that step changes readiness for action into, master board sends shutdown signal to motor, and now dead ship condition meets trigger condition, after master control time delay, drives drg to brake.
As preferably, when step running state meets trigger condition, stop motor running simultaneously.
As preferably, when step running state meets trigger condition, except master control time delay, also carry out Redundant Control to drg, this Redundant Control comprises:
After the first time delay, according to the coasting time preset as the second time delay;
After the second time delay, drg is driven to brake.
Described coasting time generally according to permission coasting distance, is calculated by repeatedly simulated experiment, also can calculate based on experience value.Described coasting distance is generally determined according to GB or professional standard.
Adopt this technical scheme, while realizing delay braking, also can meet the requirement of relevant criterion.
As preferably, between the second time delay, turning to and rotating speed of on-line checkingi motor, when motor turn to or rotating speed occurs abnormal time, drive drg to brake immediately.Adopt this technical scheme, during real-world operation, when escalator or moving sidewalk take a turn for the worse or overspeed time, drg immediate precedence brake, ensure that the safety of escalator or moving sidewalk.
Compared with prior art, beneficial effect of the present invention is embodied in:
Adopt the delayed shutdown system and method for escalator of the present invention or moving sidewalk, for escalator and the moving sidewalk of power frequency self-starting, can be improved by the frequent standby brake block abrasion caused with self-starting, service brake not action immediately during readiness for action, by the time when the rotating speed of main frame is down to certain value or even zero-speed, service brake implements band-type brake, ensures the long-term work performance of service brake; Simultaneously when escalator and moving sidewalk emerged in operation fault, service brake can action immediately, ensures escalator and moving sidewalk safety in operation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the control loop of the brake coil of prior art.
Fig. 2 is the control drawing of the shut down relay of prior art.
Fig. 3 is the workflow diagram of the delayed shutdown method of escalator of the present invention or moving sidewalk.
Fig. 4 is the control principle drawing of the delayed shutdown system of escalator of the present invention or moving sidewalk.
Fig. 5 is the control drawing of slug relay of the present invention.
Fig. 6 is the control principle road that service brake coil of the present invention and safety return circuit detect relay coil.
In above-mentioned accompanying drawing:
1, safety return circuit; 2, parking testing circuit; 3, parking loop; 4, performance loop; 5, the 3rd switch; 6, overspeed detection circuit; 7, the 4th switch; 8, testing circuit is reversed; 9, the 5th switch; 10, the first delay timer; 11, the second delay timer; 12, master board; 13, brake coil; KMU, upcoming contact device; KMD, descending contactless switch; KMS, star-like contactless switch; KMF, delta contactor; KT, slug relay; The normally closed contact of KT-1, slug relay KT; BY, shut down relay; The normally closed contact of BY-1, shut down relay BY; KBY, safety return circuit state-detection relay; The normally closed contact of KBY-1, safety return circuit state-detection relay K BY; EOK, safety return circuit state-detection output port; KEB, service brake output control terminal mouth.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 4, the delayed shutdown system of a kind of escalator of the present embodiment or moving sidewalk, comprises safety return circuit 1 and the parking testing circuit 2 for sending brake signal to drg, and: the delay timer triggered by parking testing circuit 2; By the first switch that safety return circuit 1 triggers; By the second switch that delay timer triggers; For the shut down relay BY of control brake, the control end of this shut down relay BY and the first switch, second switch parking loop in series, the normally closed contact BY-1 of this shut down relay BY accesses the performance loop 4 of drg.
First switch both can by simple analogous circuit access security loop 1 to have realized the state synchronized with safety return circuit 1, also extra treatment circuit can be added between safety return circuit 1 and the first switch, such as safety return circuit 1 is accessed master board 12, the first signal output port of master board 12 connects the control end of the first switch.
Master board 12 herein, can utilize the master board of existing escalator or moving sidewalk, can do corresponding logical process by master board to the status information of safety return circuit 1, and after control the first switch through the first signal output port.
In the present embodiment, first switch is safety return circuit state-detection relay K BY, the control end of this safety return circuit state-detection relay K BY is connected with the first signal output port of master board 12, and the normally closed contact KBY-1 of this safety return circuit state-detection relay K BY accesses parking loop 3.
Delay timer and second switch are integrated into a slug relay KT; The normally closed contact KT-1 (being equivalent to second switch) of the control end access parking testing circuit 2, this slug relay KT of this slug relay KT accesses described parking loop 3.
Safety return circuit 1 comprises multiple sensor, and status signal, for detecting the running state of each parts in escalator or moving sidewalk, is sent to master board 12 by multiple sensor simultaneously in real time.Parking testing circuit composition is shown in Fig. 5, and wherein upcoming contact device KMU is in parallel with delta contactor KMF with descending contactless switch KMD contactless switch KMS in parallel, star-like, two shunt circuits connect to control slug relay KT again coil whether electric.
As further Redundant Control, in the present embodiment, parking loop 3 is also in series with the 3rd switch 5,4th switch the 7, five switch 9, wherein the 3rd switch 5 is controlled by overspeed detection circuit 6,4th switch 7 is controlled by reverse testing circuit the 8, five switch 9 and is controlled by two-stage time delay circuit.
Two-stage time delay circuit comprises: by the first delay timer 10 of parking testing circuit 2 triggering, the second delay timer 11 by the first delay timer 10 triggering, the mouth of the second delay timer 11 is connected with the control end of the 5th switch 9, to five switch 9 sends cut-off signals after carrying out time delay according to the coasting time preset.
Above-mentioned coasting time generally according to permission coasting distance, is calculated by repeatedly simulated experiment, also can determine based on experience value.Above-mentioned coasting distance is generally determined according to GB or professional standard.
With regard to the 3rd switch 5, the 4th switch 7, the 5th switch 9 and two-stage time delay circuit itself, namely existing analogous circuit or integrated chip can be adopted, also all can be integrated into the master board 12 of existing escalator or moving sidewalk, and overspeed detection circuit 6 and reverse testing circuit 8 all can utilize existing testing circuit or device.
When 3rd switch 5, the 4th switch 7, the 5th switch 9 and two-stage time delay circuit are integrated into master board 12, the secondary signal output port of master board 12 (specifically determining according to the model of master board) connects parking loop 3, master board 12 gathers overspeed detection circuit 6, reverses the signal of testing circuit 8 and parking testing circuit 2, controlled the break-make in parking loop 3 by the logic operation of inside, indirectly realize the function of the 3rd switch 5, the 4th switch 7, the 5th switch 9 and two-stage time delay circuit.
As shown in Figure 6, composition graphs 4, when 3rd switch 5, the 4th switch 7, the 5th switch 9 and two-stage time delay circuit are integrated into master board 12, first signal output port of master board 12 is safety return circuit state-detection output port EOK, and this port is connected with safety return circuit state-detection relay K BY.The secondary signal output port of master board 12 is service brake output control terminal mouth KEB, be connected with parking loop 3, in parking loop 3, the normally closed contact KBY-1 of safety return circuit state-detection relay K BY connects with the control coil of the normally closed contact KT-1 of slug relay KT and shut down relay BY.
Composition graphs 3 and Fig. 4, during real-world operation, when safety return circuit 1 breaks down, the control coil dead electricity of safety return circuit state-detection relay K BY, its normally closed contact KBY-1 disconnects, and cut off service brake coil 13 and power, service brake is dead electricity immediately, implements band-type brake.
In setting-up time during unmanned boarding, master board controls upcoming contact device KMU, descending contactless switch KMD, star-like contactless switch KMS, delta contactor KMF dead electricity, cut off the power supply of motor, composition graphs 5 is visible, namely the control coil dead electricity of slug relay KT starts timing, after the delay time arrival of setting, the normally closed contact KT-1 of slug relay KT disconnects, and cuts off service brake coil power, implements band-type brake.
Composition graphs 4 and Fig. 6, as further Redundant Control, in setting-up time during unmanned boarding, the 5th switch 9 and the two-stage time delay circuit that are integrated into master board 12 also start to trigger, what first trigger is the first delay timer 10, after the first time delay, using the step coasting time preset as the second time delay of the second delay timer 11, after the second time delay, the service brake output control terminal mouth KEB of master board 12 exports cut-off signals, this cut-off signals can be thought and triggers the 5th switch 9, turns off parking loop 3, implements band-type brake.
In whole process, overspeed detection circuit 6, reverse testing circuit 8 send signal to master board 12 all the time, turning to and rotating speed of on-line checkingi motor, when motor turn to or rotating speed occurs abnormal time, trigger the 3rd switch 5 be integrated in master board or the 4th switch 7 immediately, the service brake output control terminal mouth KEB of master board 12 exports cut-off signals, turns off parking loop 3, implement band-type brake, ensure that the safety of escalator or moving sidewalk.
Above embodiment should not regard limiting the scope of the invention as, anyly on basis of the present invention, does not make creationary amendment, and just to expansion of the present invention with increase and be all considered as protection scope of the present invention.
Claims (10)
1. a delayed shutdown system for escalator or moving sidewalk, comprises safety return circuit (1) and the parking testing circuit (2) for sending brake signal to drg, it is characterized in that: be also provided with:
By the delay timer that described parking testing circuit (2) is triggered;
By the first switch that described safety return circuit (1) triggers;
By the second switch that described delay timer triggers;
For controlling the shut down relay (BY) of described drg, the control end of this shut down relay (BY) and the first switch, second switch parking loop (3) in series, the normally closed contact (BY-1) of described shut down relay (BY) accesses the performance loop (4) of drg.
2. the delayed shutdown system of escalator according to claim 1 or moving sidewalk, is characterized in that: described delay timer and second switch are integrated into a slug relay (KT); Control end access parking testing circuit (2) of this slug relay (KT), the normally closed contact (KT-1) of slug relay (KT) accesses described parking loop (3); Described first switch is safety return circuit state-detection relay (KBY), the control end of this safety return circuit state-detection relay (KBY) is connected with the mouth of described safety return circuit (1), and the normally closed contact (KBY-1) of this safety return circuit state-detection relay (KBY) accesses described parking loop (3).
3. the delayed shutdown system of escalator according to claim 1 and 2 or moving sidewalk, it is characterized in that: described parking loop (3) is also in series with the 3rd switch (5), in delayed shutdown system, be also provided with the overspeed detection circuit (6) for sending cut-off signals to the 3rd switch (5).
4. the delayed shutdown system of escalator according to claim 3 or moving sidewalk, it is characterized in that: described parking loop (3) is also in series with the 4th switch (7), in delayed shutdown system, be also provided with the reverse testing circuit (8) for sending cut-off signals to the 4th switch (7).
5. the delayed shutdown system of escalator according to claim 4 or moving sidewalk, it is characterized in that: be also in series with the 5th switch (9) and two-stage time delay circuit in described parking loop (3), described two-stage time delay circuit comprises:
First delay timer (10), triggers by described parking testing circuit (2);
Second delay timer (11), trigger by the first delay timer (10), the mouth of the second delay timer (11) is connected with the control end of the 5th switch (9), to five switch (9) sends cut-off signals after carrying out time delay according to the coasting time preset.
6. the delayed shutdown method of an escalator or moving sidewalk, it is characterized in that: comprise and detect safe condition and dead ship condition, when when safe condition and dead ship condition, any one meets trigger condition, drg is driven to brake, when safe condition meets trigger condition, drg is driven to brake at once; When dead ship condition meets trigger condition, after master control time delay, drg is driven to brake again.
7. the delayed shutdown method of escalator according to claim 6 or moving sidewalk, it is characterized in that: described detection dead ship condition comprises detection drive motor state and step running state, when any one meets trigger condition when drive motor state and step running state, all think that dead ship condition meets trigger condition.
8. the delayed shutdown method of the escalator according to claim 6 or 7 or moving sidewalk, is characterized in that: when step running state meets trigger condition, stops motor running simultaneously.
9. the delayed shutdown method of the escalator according to claim 6 or 7 or moving sidewalk, is characterized in that: when step running state meets trigger condition, except master control time delay, also carry out Redundant Control to drg, this Redundant Control comprises:
After the first time delay, according to the coasting time preset as the second time delay;
After the second time delay, drg is driven to brake.
10. the delayed shutdown method of escalator according to claim 9 or moving sidewalk, it is characterized in that: between the second time delay, turning to and rotating speed of on-line checkingi motor, when motor turn to or rotating speed occurs abnormal time, drive drg to brake immediately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510019395.4A CN104692226B (en) | 2015-01-14 | 2015-01-14 | A kind of delayed shutdown system and method for escalator or moving sidewalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510019395.4A CN104692226B (en) | 2015-01-14 | 2015-01-14 | A kind of delayed shutdown system and method for escalator or moving sidewalk |
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| Publication Number | Publication Date |
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| CN104692226A true CN104692226A (en) | 2015-06-10 |
| CN104692226B CN104692226B (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510019395.4A Active CN104692226B (en) | 2015-01-14 | 2015-01-14 | A kind of delayed shutdown system and method for escalator or moving sidewalk |
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| CN (1) | CN104692226B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858430A (en) * | 2016-05-13 | 2016-08-17 | 杭州优迈科技有限公司 | Soft shutdown control system and soft shutdown control method |
| CN109279485A (en) * | 2018-10-24 | 2019-01-29 | 苏州威倍科动力科技有限公司 | Control method for the braking of the power loss of escalator and moving sidewalk |
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| CN203451025U (en) * | 2013-07-16 | 2014-02-26 | 杭州优迈科技有限公司 | Power failure delay control circuit used in escalator additional brake |
| CN204474113U (en) * | 2015-01-14 | 2015-07-15 | 浙江西子重工机械有限公司 | The delayed shutdown system of a kind of escalator or moving sidewalk |
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| JPH1081481A (en) * | 1996-09-06 | 1998-03-31 | Toshiba Corp | Control device of escalator |
| CN2877136Y (en) * | 2006-03-14 | 2007-03-07 | 许晓华 | DC electric machine electromagnetic braking controller |
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| CN105858430A (en) * | 2016-05-13 | 2016-08-17 | 杭州优迈科技有限公司 | Soft shutdown control system and soft shutdown control method |
| CN109279485A (en) * | 2018-10-24 | 2019-01-29 | 苏州威倍科动力科技有限公司 | Control method for the braking of the power loss of escalator and moving sidewalk |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104692226B (en) | 2016-09-07 |
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Effective date of registration: 20210511 Address after: Room 305-w, 3rd floor, No.11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200333 Patentee after: Xin Xi'ao Elevator Group Co.,Ltd. Address before: No.46, Qichao Road, LIANHANG Economic Zone, Haining City, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG XIZI HEAVY INDUSTRY MACHINERY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211125 Address after: 314001 Room 301, building 9, No. 1332, Wanguo Road, Jiaxing Economic and Technological Development Zone, Zhejiang Province Patentee after: Zhejiang Sujie Elevator Co.,Ltd. Address before: Room 305-w, 3rd floor, No.11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200333 Patentee before: Xin Xi'ao Elevator Group Co.,Ltd. |