CN102815584B - Achieve the safe operation type controller for elevator of electronization - Google Patents
Achieve the safe operation type controller for elevator of electronization Download PDFInfo
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- CN102815584B CN102815584B CN201210177032.XA CN201210177032A CN102815584B CN 102815584 B CN102815584 B CN 102815584B CN 201210177032 A CN201210177032 A CN 201210177032A CN 102815584 B CN102815584 B CN 102815584B
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Abstract
The invention provides a kind of safe operation type controller for elevator, it has safety controller and control controller, the various safety switch of elevator or the operating state of safety device are exported as input information the command signal making lift car state-transition by this safety controller, this control controller controls elevator according to command signal and runs, safety controller is inputted information side by side, that which safety switch or safety device have carried out anomalous behavior grasping, and the judgement that elevator of sening as an envoy to is out of service, described control controller is when action halt switch or the maintenance switch undertaken by upkeep operation personnel being detected, corresponding indicator lamp is given by message notice relevant for the position and anomalous content with the safety switch carrying out anomalous behavior or safety device.Thus, need not Special Display be set, and also need not newly increases read out instrument, can determine in the mode be easily understood and indicate the trouble location of various safety switch and safety device.
Description
Technical field
The operating state that the present invention relates to a kind of various safety switchs to elevator (governor switch etc. whether whether the position such as detecting lift car exceed the speed limit beyond the final limit switch of range of operation and the speed of detection lift car) and safety device (such as energy disperser and emergency braking apparatus etc.) carries out the elevator safety operation system achieving electronization of abnormal judgement, and the personnel especially related to beyond a kind of professional of making also can make the safe operation type controller for elevator achieving electronization of suitably judgement to the abnormal position of operating state.
Background technology
Usually, as various safety switch and the safety device of elevator, can list detect lift car position whether beyond the rotary encoder of governor, energising shutoff device, winch drg and the emergency braking apparatus in order to make lift car emergent stopping the energising of the drive motor of winch be cut off according to the testing result of rotary encoder that whether the car door switch in the final limit switch of common range of operation, lift car and layer door switch, the speed that detects lift car exceed the speed limit.In addition, energising shutoff device and winch drg are made up of the mechanical parts such as switch, relay and contactless switch and electric component, are made up of the combiner group of the mechanical parts such as governor, speed controller rope and holding device and electric component for directly making the emergency braking apparatus of lift car emergent stopping.
In addition, achieve in the safe operation type controller for elevator of electronization existing, use safety device (safety controller) judges the exception of the operating state of various safety switch and safety device, this safety device is when carrying out the judgement of operating state exception, exception is detected according to the electronization input information from safety switch and safety device and various sensor, carrying out computing by CPU makes elevator change the command signal of safe condition into, and this command signal is outputted to multiple shutdown feature (energising shutoff device, winch drg and emergency braking apparatus) in.In above-mentioned controller for elevator, safety system is made up of above-mentioned component parts.
As prior art, such as, there will be a known the scheme disclosed in patent documentation 1, trouble location is notified monitor by installing vibration transducer in the contact portion of the various switches having carried out action for which make and break contact detected in vital circuit by it.
In addition, Patent Document 2 discloses a kind of scheme, it makes the state of control button change, and the picture making it possible to the read out instrument on monitor thus monitors easily the equipment state of elevator etc.In addition, Patent Document 3 discloses a kind of picture technique of display, it can pass on the operating state of the system machine being formed complete equipment in the Monitor and Control device of complete equipment in the mode be easily understood.
Patent documentation
Patent documentation 1: the flat 7-274268 publication of Japanese Laid-Open
Patent documentation 2: Japanese Laid-Open 2004-277109 publication
Patent documentation 3: Japan JP 7-38131 publication
In the prior art comprising above-mentioned patent documentation 1 to patent documentation 3, need the Special Display of the error state that display equipment is set, due to these read out instruments setting place and confirm that place is all positioned at the special space such as handler room, so there is the problem that common people are not easy to grasp unit exception state.
Summary of the invention
The object of the present invention is to provide a kind of controller for elevator, it is a kind of safe operation type controller for elevator achieving electronization, do not need to arrange special read out instrument in this controller for elevator, and do not need new display device yet, especially for upkeep operation personnel, the trouble location of various safety switch and safety device can be indicated in the mode be easily understood, therefore, it is possible to significantly shorten elevator out of service after elevator not time of run.
In order to solve above-mentioned problem, the present invention mainly have employed following structure.
Safe operation type controller for elevator provided by the invention has safety controller and control controller, elevator is comprised the various safety switch of final limit switch, car door switch and energy disperser or the operating state of safety device as input information to carry out abnormal judgement by described safety controller, and output makes lift car change the command signal of safe condition into, described control controller controls the operation of elevator according to described command signal, in described safe operation type controller for elevator
Described safety controller is passed through by inputting the input information of described various safety switch or safety device side by side, and can grasp is which safety switch or safety device have carried out anomalous behavior, and the judgement that elevator of sening as an envoy to is out of service,
Described control controller carries out the control out of service of described elevator according to the described judgement making elevator out of service made by described safety controller, and when the action detecting halt switch or the maintenance switch operated by upkeep operation personnel, by with the indicator lamp of general entrance hall button becoming the carrying out that run the reason the stopped safety switch of anomalous behavior or the position of the safety device message notice lobby floor relevant with anomalous content, or the general car position read out instrument in notice lift car.
Invention effect
According to the safe operation type controller for elevator achieving electronization of the present invention, in order to ensure the safety of elevator and passenger, abnormal judgement is carried out to the operating state of various safety switch and safety device, the present invention does not need to arrange the read out instrument at the anomalous behavior position being used for identifying these safety switchs and safety device specially, when causing elevator to stopped operation at the operating state because of various safety switch and safety device, can notify the position of anomalous behavior, therefore, except professional, the owner etc. in such as building also easily can grasp the position of anomalous behavior.
And, by coming indication fault position in the mode be easily understood, upkeep operation personnel can promptly take suitable counter-measure after elevator is out of service, so the accident that can promptly prevent passenger to be held in lift car occurs, significantly can shorten and elevator is recovered and required man-hour.
Accompanying drawing explanation
Fig. 1 is the integral structure figure achieving the elevator of the safe operation type controller for elevator of electronization comprised involved by embodiments of the present invention.
Fig. 2 is the abnormality detection of operating state and the instruction diagram of cut off summary that represent various safety switch and the safety device used in the controller for elevator as prerequisite of the present invention.
Fig. 3 is the diagram of circuit of the treatment scheme of the electronic safe operation type controller for elevator represented involved by present embodiment.
Fig. 4 represents the diagnostics table of the glittering pattern employing various safety switch and the safety device used in the electronic safe operation type controller for elevator involved by present embodiment.
Fig. 5 is the illustration figure of the operating state exception utilizing the sequential of the bright light of entrance hall button and light-off to indicate various safety switch and the safety device used in the electronic safe operation type controller for elevator involved by present embodiment.
Fig. 6 utilizes the display frame of car position read out instrument (liquid crystal CPI) to be presented at the illustration figure of the operating state exception of various safety switch and the safety device used in the electronic safe operation type controller for elevator involved by present embodiment.
Nomenclature:
1 lift car
2 electrical motors
3 winch drgs
5 inverters
6 cut offs
7 source of ACs
10 main hoist cables
11 counterbalanceds weight
12 speed controller ropes
13 governors
14 holding devices
15 emergency braking apparatus
16 guide rails
17 energy dispersers
21 rotary encoders
22,23 final limit switch
30 control controllers
40 safety controller
50 electronic safe operation type controller for elevator
Operation board in 60 cars
61,62,63 entrance hall buttons
70 car door switches
71,72,73 layers of door switch
80 specific range sensing devices
81,82,83 shields
Detailed description of the invention
Below, referring to figs. 1 through Fig. 6, the safe operation type controller for elevator achieving electronization involved by embodiments of the present invention is described in detail.Fig. 1 is the integrally-built schematic diagram of the elevator representing the electronic safe operation type controller for elevator comprised involved by present embodiment.
In FIG, 1 represents lift car, 2 represent electrical motor, 3 represent winch drg, 5 represent inverter, 6 represent cut off, 7 represent source of AC, 10 represent main hoist cable, 11 represent counterbalanced weight, 12 represent speed controller rope, 13 represent governor, 14 represent holding device, 15 represent emergency braking apparatus, 16 represent guide rail, 17 represent energy disperser, 21 represent rotary encoder, 22, 23 represent final limit switch, 30 represent control controller, 40 represent safety controller, 50 represent electronic safe operation type controller for elevator, 60 represent operation board in car, 61, 62, 63 represent entrance hall button, 70 represent car door switch, 71, 72, 73 presentation layer door switchs, 80 represent specific range sensing device, 81, 82, 83 represent shield.
Fig. 1 represents the integral structure of electronic safe operation type elevator, and lift car 1 is connected with counterbalanced weight 11 by main hoist cable 10, by driving main hoist cable 10 with electrical motor 2, lift car 1 is moved in hoist trunk.Electrical motor 2 is driven by the inverter 5 be connected with source of AC 7 by cut off 6.During lift car 1 movement, when safety controller 40 detects the action of the layer door switch 71 ~ 73 of car door switch 70 or the floor that do not have lift car to stop, cut off 6 action according to this testing result, makes the propulsive effort of electrical motor 2 disappear.Winch drg 3 is in action at ordinary times, and after powered up, the action of winch drg 3 is removed.
The electronic safe operation type controller for elevator 50 be arranged near hoist trunk has control controller 30 and safety controller 40, control with controller 30 according to liquid crystal CPI (CarPositionIndicator, car position telltale) car in the input information etc. of destination floor button in operation board 60 and entrance hall button 61 ~ 63 carry out control inverter 5, run to make lift car 1, safety controller 40 spinning in the future coder 21 and final limit switch 22, whether the signal of 23 detects the lift car 1 corresponding with assigned position as input and has occurred exceeding the speed limit or beyond situations such as normal run locations, and by winch drg 3, cut off 6 and the emergency braking apparatus 15 pairs of lift cars 1 utilizing holding device 14 to carry out braking are braked.
Speed controller rope 12 is drawn by lift car 1 along with the movement of lift car 1, makes governor 13 rotate thus.Governor 13 has holding device 14 and rotary encoder 21, speed controller rope 12 is clamped during holding device 14 action, now, if lift car 1 moves, the emergency braking apparatus 15 be then arranged on lift car 1 is carrying out displacement action because stopped the effect of the speed controller rope 12 of movement by clamping under, thus, emergency braking apparatus 15 clamps the guide rail 16 arranged along lift car 1, makes lift car 1 emergent stopping.Rotary encoder 21 rotates together with governor 13, and produces impulse singla.
Undertaken accumulative with the position obtaining lift car 1 by the variable quantity of the impulse singla to rotary encoder 21, and by carrying out to the time average of this variable quantity the speed that lift car 1 is obtained in computing.When lift car 1 arrives destination floor, the specific range sensing device 80 be arranged on lift car 1 is relative with the shield 81 ~ 83 in the entrance hall being arranged on destination floor, thus, the safety controller 40 in controller for elevator 50 detects stop position (elevator door can opened areas).
The lower end of hoist trunk is provided with energy disperser 17, when relying on the braking force of winch drg 3 and emergency braking apparatus ¨ still not have to make lift car 1 stop completely, bearing lift car 1 by energy disperser 17 and absorbing the impact of lift car 1.
Final limit switch 22,23 is provided with near the lower end and upper end of hoist trunk.These final limit switch 22,23 are being in OFF (disconnection) state at ordinary times, and lift car 1 exceed final limit switch 22,23 and enter final limit switch 22,23 below or above time, these final limit switch 22,23 become ON (connection) state, and the position being detected as lift car 1 is beyond common range of operation.
; in the existing mode of the prerequisite as present embodiment; the abnormity judgement set of the various safety switch of elevator and the operating state of safety device is made up of the mechanical device comprising circuit; such as; as shown in Figure 2; because various switch is connected in series relative to power supply and cut off 6; as long as so detect in the operating state of various safety switch and safety device have an operating state to there occurs exception; just cut off 6 action shown in Fig. 1 is made rapidly; lift car 1 is stopped, guaranteeing safety with this.Which, in existing mode, need by estimating the safety switch that is confirmed to be singly in abnormity judgement set and safety device has carried out action, so require a great deal of time and labour.
For this reason, in the electronic safe operation type controller for elevator 50 involved by embodiments of the present invention, abnormity judgement set has been modified into electronic safe operation type system from the existing mode shown in Fig. 2, specifically, be modified into and can have been carried out the abnormal structure (such as relative to safety controller 40, various safety switch and safety device connection alongside one another being carried out the structure inputted) judged by the safety controller 40 (controller in controller for elevator 50) being equipped with CPU, thus, safety controller 40 can grasp the operating state of any one in various safety switch and safety device, and be sent to control there occurs abnormal position (the abnormal position of the some or multiple device in the safety switch shown in Fig. 2 and safety device) in control controller 30 that elevator runs.
Control controller 30 is configured to according to received content, such as when the operating switch detected for by mode altering being elevator maintenance operational mode and maintenance switch or the operating switch being used for making elevator out of service and halt switch have carried out action, the glittering number of times of the indicator lamp be attached on the entrance hall button of the key horizons such as the many lobby floor of boarding and alighting is utilized to notify to become the position of elevator reason out of service.
Fig. 3 is the diagram of circuit of the treatment scheme of the electronic safe operation type controller for elevator 50 represented involved by present embodiment.First, checking the operating state of various safety switch and safety device in step 301, judging whether it has carried out anomalous behavior, when having carried out anomalous behavior, enters into step 302.In step 302, in order to judge that the indicating status of entrance hall button is the pointing-type at pattern (safety switch etc. do not carry out the common indicating status of action) or instruction anomalous behavior position at ordinary times, judge whether operating switch for making lift car out of service and halt switch and the state for the operating switch that by mode altering is elevator maintenance operational mode and maintenance switch are that (halt switch and maintenance switch are arranged in lift car ON, the switch operated when trouble tracing for upkeep operation personnel), when judged result is expressed as ON, enter into step 303.When judged result is expressed as OFF, enter into step 304, if be not pointing-type before this, then end process.
In step 303, glittering glittering pattern (relation of the project name of reference shown in Fig. 4 and glittering number of times) is carried out at the position having set according to the carrying out in various safety switch and safety device anomalous behavior.When this glittering pattern, such as, utilize the indicator lamp be attached on the entrance hall button 61 of lobby floor to perform glittering pattern.The occasion of anomalous behavior has been carried out there being multiple position, such as rotary encoder 21 detects the hypervelocity of the lift car 1 corresponding with assigned position, and the occasion of lift car 1 beyond assigned position detected by final limit switch 22,23 simultaneously, as shown in Figure 4, preferential glittering pattern is set according to the height of the priority preset.In the examples described above, hypervelocity in succession detected and under exceeding entopic situation, in the example of fig. 4, hypervelocity the highest for priority is being set as preferential glittering pattern.In this glittering pattern, when glittering number of times is more than stipulated number (such as in the example depicted in fig. 4, when glittering number of times is more than 5 times), represent trouble location (not at elevator lobby) in the elevator except lift car.
At this to foregoing repeat specification once, when various safety switch and safety device have carried out anomalous behavior, the indicating status of the indicator lamp of entrance hall button is switched to the anomalous behavior position pointing-type (being indicated the pattern at anomalous behavior position by glittering number of times) at instruction anomalous behavior position from pattern at ordinary times (pattern of indicating status when representing elevator normal operation), according to this glittering number of times, the position (the glittering number of times of the diagnostics table according to Fig. 4 and the indicator lamp of car button determines the position of anomalous behavior) of anomalous behavior can be determined.When glittering number of times is more than 5 times, representing there occurs needs upkeep operation personnel to enter in elevator the adjoint adventurous fault carrying out checking.Carry out checking (with only needing compared with the occasion of carrying out in lift car checking) the need of entering in elevator, important judgement information when carrying out upkeep operation, therefore, even if from this point, to carried out the various safety switch of anomalous behavior or safety device position is set and anomalous content indicates and notifies, have great importance concerning present embodiment.
Fig. 4 represents the diagnostics table of the glittering pattern employing various safety switch and the safety device used in the electronic safe operation type controller for elevator involved by present embodiment.As shown in Figure 4, the safety priority of the project name of the anomalous behavior of various safety switch and safety device, the glittering number of times corresponding with this project and each project is previously determined in the mode of chart.
In step 305, according to set glittering pattern, as shown in the timing diagram of fig. 5, carry out glittering process by the indicator lamp be attached on the entrance hall button 61 of lobby floor, namely export the instruction of bright light and light-off relative to the indicator lamp be attached on entrance hall button 61.In the treatment step of step 304 to step 306, when removing pointing-type, end process after the entrance hall button 61 of lobby floor is once turned off the light.
Fig. 5 is the illustration figure of the operating state exception utilizing the sequential of the bright light of entrance hall button and light-off to indicate various safety switch and the safety device used in the electronic safe operation type controller for elevator involved by present embodiment.The glittering state of the entrance hall button when example of Fig. 5 represents that emergency braking apparatus 15 has carried out anomalous behavior because rotary encoder 21 hypervelocity detected.In this example, by entrance hall button 61 carry out within 10 seconds 6 times glittering.By being contrasted with the glittering number of times of entrance hall button by the glittering number of times of the diagnostics table shown in Fig. 4, the safety switch and the safety device that have carried out anomalous behavior can be determined.
The action opportunity of a series of process shown in Fig. 3 be configured to according to the information relevant with anomalous behavior position of sending from safety controller 40 (be judged as needs input information out of service with there is the safety switch of exception or safety device the position information relevant with anomalous content is set), use the time meter of the CPU be mounted in control controller 30, carry out periodically (such as every 0.5 second) diagnosis, processing load can be suppressed in minimum degree thus, and the operation of elevator can not be hindered.
Fig. 6 is illustration figure when utilizing the display frame of car position read out instrument (liquid crystal CPI) abnormal to the operating state being presented at various safety switch and the safety device used in the electronic safe operation type controller for elevator involved by present embodiment.In the example of fig. 6, when safety switch or safety device have carried out anomalous behavior, upkeep operation personnel operate maintenance switch (also can be halt switch), now, when the switch motion that maintenance switch carries out because of this operation being detected, utilize the liquid crystal CPI in lift car 1, instead of by the glittering number of times of the entrance hall button of lobby floor, notify the position becoming the safety switch of elevator reason out of service or the anomalous behavior of safety device.
Fig. 6 (a) represents picture example during normal operation, picture be divided into 3 parts (show respectively service direction, the position of lift car and elevator door opening and closing/next landing/take elevator time notice) show the operation information of elevator.Fig. 6 (b) represents the picture example run when stopping, in order to by elevator from normally run different situation signal passengers, the background colour of picture is arranged to redness, at the top of picture display service direction (if elevator travels, then scroll the arrow towards travel direction) and car position, at the operation information of central authorities' display elevator of picture.
In the present embodiment, when maintenance switch being detected or halt switch has carried out action, as shown in Fig. 6 (c), in order to the position becoming elevator reason out of service being presented in the liquid crystal CPI in lift car, at the top of picture display service direction (if elevator is not in traveling, then do not show service direction) and car position, at operation information and the abnormal position of central authorities' display elevator of picture.
As mentioned above, the feature achieving the safe operation type controller for elevator of electronization of the present invention is, there is safety controller and control controller, the various safety switch of elevator and the operating state of safety device are carried out abnormal judgement as input information by this safety controller, and output makes lift car change the command signal of safe condition into, this control controller controls the operation of elevator according to this command signal, when safety controller is judged as making elevator out of service according to input information, by safety controller, the safety switch of reason and the position of safety device that become this operation stopping are outputted in control controller as command signal.And, control controller is according to this command signal, in the mode be easily understood, such as, notify trouble location with the liquid crystal CPI in the indicator lamp of the entrance hall button of the lobby floor be connected with control controller (or also can be orlop) or lift car.
Claims (3)
1. a safe operation type controller for elevator, there is safety controller and control controller, elevator is comprised the various safety switch of final limit switch, car door switch and energy disperser or the operating state of safety device as input information to carry out abnormal judgement by described safety controller, and the command signal exported for making lift car change safe condition into, described control controller controls the operation of elevator according to described command signal, the feature of described safe operation type controller for elevator is
Described safety controller is passed through by inputting the input information of described various safety switch or safety device side by side, and can grasp is which safety switch or safety device have carried out anomalous behavior, and the judgement that elevator of sening as an envoy to is out of service,
Described control controller carries out the control out of service of described elevator according to the described judgement making elevator out of service made by described safety controller, and when the action detecting halt switch or the maintenance switch operated by upkeep operation personnel, by with become the carrying out that run the reason the stopped safety switch of anomalous behavior or the position of the safety device message notice relevant with anomalous content to the indicator lamp of the general entrance hall button of lobby floor
Carry out the mode distinguished with the glittering number of times of the indicator lamp by described general entrance hall button, to become described safety switch or the position of the safety device information relevant with anomalous content running the carrying out of the reason stopped anomalous behavior and notify,
When described glittering number of times is more than stipulated number, represent that having carried out the described safety switch of anomalous behavior or safety device is arrange the safety switch of position in elevator or safety device,
When described glittering number of times is more than 5 times, representing there occurs needs upkeep operation personnel to enter in described elevator the adjoint adventurous fault carrying out checking,
Described glittering number of times is specified by diagnostics table, makes this glittering number of times establish corresponding with the operating state of described various safety switch or safety device in this diagnostics table in advance.
2. a safe operation type controller for elevator, there is safety controller and control controller, elevator is comprised the various safety switch of final limit switch, car door switch and energy disperser or the operating state of safety device as input information to carry out abnormal judgement by described safety controller, and the command signal exported for making lift car change safe condition into, described control controller controls the operation of elevator according to described command signal, the feature of described safe operation type controller for elevator is
Described safety controller is passed through by inputting the input information of described various safety switch or safety device side by side, and can grasp is which safety switch or safety device have carried out anomalous behavior, and the judgement that elevator of sening as an envoy to is out of service,
Described control controller carries out the control out of service of described elevator according to the described judgement making elevator out of service made by described safety controller, and when the action detecting halt switch or the maintenance switch operated by upkeep operation personnel, by with become the carrying out that run the reason the stopped safety switch of anomalous behavior or the position of the safety device message notice relevant with anomalous content to the general car position read out instrument in lift car, at the top of the picture of described general car position read out instrument display service direction and car position, at operation information and the abnormal position of central authorities' display elevator of the picture of described general car position read out instrument.
3. safe operation type controller for elevator according to claim 2, is characterized in that,
When carrying out the control out of service of described elevator according to the described judgement making elevator out of service made by described safety controller before the action of described halt switch or maintenance switch being detected, elevator only stopped because of the anomalous behavior of described various safety switch or safety device and runs this situation and inform to general car position read out instrument in lift car by described control controller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-128591 | 2011-06-08 | ||
| JP2011128591A JP5677897B2 (en) | 2011-06-08 | 2011-06-08 | Elevator for electronic safety |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102815584A CN102815584A (en) | 2012-12-12 |
| CN102815584B true CN102815584B (en) | 2016-01-20 |
Family
ID=47300100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210177032.XA Active CN102815584B (en) | 2011-06-08 | 2012-05-31 | Achieve the safe operation type controller for elevator of electronization |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5677897B2 (en) |
| CN (1) | CN102815584B (en) |
| SG (1) | SG186544A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111762647A (en) * | 2020-05-29 | 2020-10-13 | 上海史必诺物流设备有限公司 | Electrical safety interlocking loop of vertical conveying system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60177167U (en) * | 1984-04-27 | 1985-11-25 | 三菱電機株式会社 | elevator control device |
| JPH06211457A (en) * | 1993-01-18 | 1994-08-02 | Tadao Yamai | Lock-in releasing device in emergency stop conditoin of elevator |
| JP2006103910A (en) * | 2004-10-06 | 2006-04-20 | Mitsubishi Electric Corp | Emergency notification device of elevator |
| WO2010150644A1 (en) * | 2009-06-23 | 2010-12-29 | 三菱電機株式会社 | Elevator device |
| KR101305568B1 (en) * | 2009-11-02 | 2013-09-09 | 미쓰비시덴키 가부시키가이샤 | Notification device of elevator |
-
2011
- 2011-06-08 JP JP2011128591A patent/JP5677897B2/en active Active
-
2012
- 2012-05-18 SG SG2012036778A patent/SG186544A1/en unknown
- 2012-05-31 CN CN201210177032.XA patent/CN102815584B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP5677897B2 (en) | 2015-02-25 |
| SG186544A1 (en) | 2013-01-30 |
| JP2012254851A (en) | 2012-12-27 |
| CN102815584A (en) | 2012-12-12 |
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