CN107473042A - A kind of fireman's switch control system for elevator - Google Patents
A kind of fireman's switch control system for elevator Download PDFInfo
- Publication number
- CN107473042A CN107473042A CN201710700017.1A CN201710700017A CN107473042A CN 107473042 A CN107473042 A CN 107473042A CN 201710700017 A CN201710700017 A CN 201710700017A CN 107473042 A CN107473042 A CN 107473042A
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- Prior art keywords
- elevator
- fireman
- switch
- gas detector
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007789 gas Substances 0.000 claims description 75
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- 238000001514 detection method Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 101000746134 Homo sapiens DNA endonuclease RBBP8 Proteins 0.000 description 1
- 101000969031 Homo sapiens Nuclear protein 1 Proteins 0.000 description 1
- 229920005479 Lucite® Polymers 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 102100021133 Nuclear protein 1 Human genes 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229940074869 marquis Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- VBUNOIXRZNJNAD-UHFFFAOYSA-N ponazuril Chemical compound CC1=CC(N2C(N(C)C(=O)NC2=O)=O)=CC=C1OC1=CC=C(S(=O)(=O)C(F)(F)F)C=C1 VBUNOIXRZNJNAD-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a kind of fireman's switch control system for elevator, including elevator-mainboard and the elevator-mainboard is accessed to trigger the fireman's switch of elevator shutdown, be additionally provided with：First gas detector in building room；The one-level warning device that signal according to the first gas detector is accordingly prompted；Installed in the second gas detector of elevator lobby；The secondary alarm device on loop between the elevator-mainboard and fireman's switch is connected on, the secondary alarm device accordingly opens and closes according to the signal of the second gas detector.Provided by the present invention for the fireman's switch control system of elevator, elevator power supply can be prevented to be cut off unnecessary when, improve the security that elevator uses.
Description
Technical field
The present invention relates to elevator technology field, and in particular to a kind of fireman's switch control system for elevator.
Background technology
With the propulsion of Urbanization Process In China, the erecting bed amount and maintenance platform amount all rapid growths of elevator, residential elevator
The event for fire occur also accordingly increases.
The fireman's switch set-up mode of existing elevator is as shown in figure 1, the both ends of fireman's switch are respectively connected to elevator-mainboard P1
The fire-fighting signal input port (i.e. No. 1 terminal mouth EFX) and 24V power ports (i.e. No. 8 terminal mouth COM1DC24V) of socket,
Loop is formed between fireman's switch and the P1 sockets of elevator-mainboard, fireman's switch is normally closed setting, and fireman's switch is arranged on fire-fighting
In switch enclosure, fireman switch board is located at elevator fire-fighting gateway.
Above-mentioned fireman's switch is arranged in fire-fighting gateway, when there is fire, it is necessary to break fireman switch board glass cover-plate or
The dynamic triggering of plexiglass cover wrench；After fire condition eliminates, the glass cover-plate or lucite cover plate of fireman switch board cannot
Change, easily pressed by mistake by people in time, triggering elevator enters forced landing pattern.
When fire occurs for building somewhere, gas detection sensor alarm, fire-fighting Security Personnel senses according to detection of gas
The alarm signal of device, fireman's switch is triggered manually, cut off elevator power supply, stop elevator operation.
In the following two cases, necessity of triggering fireman's switch is had no：
(1) false alarm.Occur failing to report alert situation, general fire-fighting gas detection sensor during in order to prevent that fire from occurring
Alarm threshold value relatively low, usually 0.3dB/m is set, because alarm threshold value is relatively low, or even there is burning a piece of paper and can also touch
Transmit messages police, but now has no fire dangerous situation.
(2) fire early period of origination.Fire early period of origination is not immediately affected by the use of elevator, from fire early period of origination to fire
Calamity influences elevator and used, and has intervals.
If in both cases, fire-fighting Security Personnel triggers fireman's switch, elevator power supply is cut off, causes elevator emergency
In the stopping time, easily the passenger in car, particularly old man, child and pregnant woman are damaged.
Application publication number is that CN104071666A patent of invention document discloses a kind of Novel firefighting elevator, and control is single
Member is arranged on elevator(lift) machine room, and hoistway door is configured to fire resistant doorsets, already belongs to Fire lift, rather than common elevator.Fire-fighting electricity
The cost of ladder is high, and establishing criteria Fire lift is equipped with independent cup, and each electric, capability of engineering equipment requires high, generally each
Building unit only configures one.
Control unit be arranged on elevator(lift) machine room can not be disappeared in time control center staff identification, control operation.
Although stand-by power supply or emergency power supply be present in elevator, during still having more than 10ms power-off during Switching power,
Cause elevator jerk, easily the passenger in car is damaged, after elevator re-powers, put down into normal operation or nearby
Layer.
The content of the invention
The invention provides a kind of fireman's switch control system for elevator, prevent elevator power supply unnecessary when
It is cut off, improves the security that elevator uses.
A kind of fireman's switch control system for elevator, including elevator-mainboard and the elevator-mainboard is accessed to trigger electricity
The fireman's switch that ladder is shut down, is additionally provided with：
First gas detector in building room；
The one-level warning device that signal according to the first gas detector is accordingly prompted；
Installed in the second gas detector of elevator lobby；
Be connected on the secondary alarm device on loop between the elevator-mainboard and fireman's switch, the secondary alarm device according to
According to the corresponding break-make of signal of the second gas detector.
In order to avoid cutting off elevator power supply in the case of unnecessary, the present invention sets following two-stage alarm：
1) when the first gas detector in building room detects that gas concentration exceedes corresponding alarm threshold value, one-level
Warning device triggering carries out first order alarm, and after fire-fighting Security Personnel receives first order alarm signal, directly triggering does not disappear
Anti- switch, but judge identification dangerous situation, if having no fire dangerous situation, one-level warning device is resetted to non-triggering state；
2) when the second gas detector of elevator lobby detects that gas concentration exceedes corresponding alarm threshold value, two level
Warning device is triggered, and carries out second level alarm.
Because secondary alarm device is connected between elevator-mainboard and the loop of fireman's switch, secondary alarm device is triggered
When, the loop between elevator-mainboard and fireman's switch is cut off, and elevator enters fire mode.
After being alarmed in the second level, fire-fighting Security Personnel can manually trigger fireman's switch, it is ensured that elevator power supply is cut
Disconnected, to prevent secondary alarm device exception, elevator is not automatically into fire mode.
The elevator lobby refers to some region of awaiting elevator, the marquis's ladder not being strictly defined as in Fire lift
The Room, when the gas concentration in elevator lobby exceedes corresponding alarm threshold value, represent that passenger normally passes in and out elevator by shadow
Ring, elevator should enter fire mode.
Refer to remaining region in addition to elevator lobby in the building room, can broadly understood as comprising building
The public domains such as road, hall, a small amount of flue gas concentration in these spaces do not interfere with the normal use of elevator.
Preferably, the first gas detector and second gas detector include sensing carbonomonoxide concentration,
The gas detection sensor of gas concentration lwevel and oxygen concentration.
The gas detector uses smoke detector of the prior art, by detecting CO in Air, dioxy
Change the concentration of carbon and oxygen, judge the fire order of severity.
Preferably, being directed to gas concentration lwevel, the alarm threshold value of the second gas detector is visited higher than first gas
Survey the alarm threshold value at least 1.5dB/m of device.
The alarm threshold value of first gas detector should have appropriate drop with the alarm threshold value of second gas detector, with
Reflecting the sprawling situation of fire, the alarm threshold value of first gas detector is set relatively low, to prevent there is situation about failing to report, second
The alarm threshold value of gas detector need to correctly reflect degree of the elevator by influence of fire, both farthest utilize elevator evacuation
Personnel, while ensure the passenger safety in car.
Further preferably, for gas concentration lwevel, the alarm threshold value of the first gas detector is 0.3dB/m, institute
The alarm threshold value for stating second gas detector is 2dB/m.
Preferably, the one-level warning device includes receiving first of first gas detector signal in each building room
Cable concentrator, and be connected with first cable concentrator and be controlled by the sound and/or light alarm element of first cable concentrator.
The one-level warning device is separately provided, and first cable concentrator is not to refer only to the box with physical form is determined
Body, also comprising the transmission to signal and processing unit, the first gas detector signal in each building room is transmitted to first
Cable concentrator, when any one first gas detector detects that gas concentration lwevel exceedes alarm threshold value, pass through the first cable concentrator
Triggering sound and/or light alarm element are alarmed.
The comparison of first gas detector signal and alarm threshold value, software can be utilized to realize, hardware electricity can also be utilized
Road is realized, for example, first gas detector signal and alarm threshold value compare knot by exporting comparative result after comparison circuit
Trigger signal of the fruit as sound and/or light alarm element.
Preferably, the secondary alarm device includes the of the second gas detector signal for receiving each elevator lobby
Two cable concentrators, and be connected with second cable concentrator and be controlled by the controlling switch of second cable concentrator.
Second cable concentrator is not to refer only to the box body with physical form is determined, comprising the transmission and processing to signal yet
Device, the second gas detector signal of each elevator lobby are transmitted to the second cable concentrator, any one second gas detector
When detecting that gas concentration lwevel exceedes alarm threshold value, controlling switch is triggered by the second cable concentrator.
The controlling switch is connected between elevator-mainboard and fireman's switch on loop, and controlling switch is with fireman's switch
Normally closed setting, when second gas detector detects that gas concentration lwevel exceedes alarm threshold value, controlling switch is triggered, so as to
Off-state is switched to, cuts off the loop between elevator-mainboard and fireman's switch.
Controlling switch and the disconnection of any one in fireman's switch, can cause loop between elevator-mainboard and fireman's switch
Cut-out, even if elevator enters fire fighting state.The difference of controlling switch and fireman's switch is that controlling switch relies on second gas
Detector signal triggers automatically, and fireman's switch needs manually to trigger.
The output device of alarm signal in secondary alarm device utilizes the fire fighting alarm device that elevator is had by oneself, it is not necessary to volume
It is separately provided outside.
Preferably, being additionally provided with detector integrated cabinet, first cable concentrator, the second cable concentrator and controlling switch are pacified
In the detector integrated cabinet.The detector integrated cabinet is arranged in fire fighting monitoring center.
Preferably, the fireman's switch includes the first fireman's switch and the second fireman's switch of series connection, both are hand
Dynamic trigger switch.First fireman's switch is arranged in fire fighting monitoring center；Second fireman's switch is arranged in elevator fire-fighting
Come in and go out layer.
First fireman's switch can be arranged in detector integrated cabinet, can also be arranged in its of fire fighting monitoring center
His position.Any one fireman's switch is triggered, and can cut off the loop between elevator-mainboard and fireman's switch, enter elevator
Enter fire mode.
Provided by the present invention for the fireman's switch control system of elevator, it can prevent elevator power supply unnecessary when
It is cut off, improves the security that elevator uses.
Brief description of the drawings
Fig. 1 is fireman's switch loop wiring diagram in the prior art；
Fig. 2 is the wiring diagram for the fireman's switch control system that the present invention is used for elevator；
Fig. 3 is the circuit theory schematic diagram that the present invention is used for two-stage warning device in the fireman's switch control system of elevator.
Embodiment
Below in conjunction with the accompanying drawings, the fireman's switch control system that elevator is used for the present invention is described in detail.
As shown in Fig. 2 a kind of fireman's switch control system for elevator, including elevator-mainboard and access elevator master
Plate is additionally provided with triggering the fireman's switch of elevator shutdown：
First gas detector in building room；
The one-level warning device that signal according to first gas detector is accordingly prompted；
Installed in the second gas detector of elevator lobby；
The secondary alarm device being connected between elevator-mainboard and fireman's switch on loop, the secondary alarm device is according to the
The signal of two gas detectors accordingly opens and closes.
First gas detector and second gas detector include sensing carbonomonoxide concentration, gas concentration lwevel and
The gas detection sensor of oxygen concentration.
The trend that gradually spreads is presented in view of the intensity of a fire of building, out of building room to elevator hall have one section away from
From the sprawling of carbon dioxide needs the time, therefore the alarm threshold value of first gas detector and second gas detector is with poor
Value, for gas concentration lwevel, the alarm threshold value of first gas detector is 0.3dB/m, the report of the second gas detector
Alert threshold value is 2dB/m.
The alarm threshold value of first gas detector is relatively low, fire-fighting Security Personnel is received fire signal as early as possible, in time fire extinguishing
Exclude dangerous situation, the alarm threshold value of second gas detector on the premise of elevator passenger safety is ensured, be appropriately arranged with it is higher, with
Avoid cutting off all power supplys of building unnecessary when, cause elevator passenger secondary injury.
As shown in figure 3, one-level warning device includes the first collection for receiving first gas detector signal in each building room
Line box, and be connected with first cable concentrator and be controlled by the sound and light alarm element of first cable concentrator.
The signal of first gas detector in each building room is transferred to the first cable concentrator by two lines bus, first
In cable concentrator, first gas detector signal is with alarm threshold value by exporting comparative result, comparative result after comparison circuit
Trigger signal as sound and light alarm element.
As shown in figure 3, secondary alarm device includes receiving the second of the second gas detector signal of each elevator lobby
Cable concentrator, and be connected with second cable concentrator and be controlled by the controlling switch of second cable concentrator.
The signal of second gas detector in each building room is transferred to the second cable concentrator by two lines bus, second
In cable concentrator, second gas detector signal is with alarm threshold value by exporting comparative result, comparative result after comparison circuit
Trigger signal as controlling switch.
As shown in figure 3, being additionally provided with detector integrated cabinet, the first cable concentrator, the second cable concentrator and controlling switch are respectively mounted
In the detector integrated cabinet, detector integrated cabinet is arranged in fire fighting monitoring center.
As shown in Fig. 2 the controlling switch EFO series connection in fireman's switch EFO and detector integrated cabinet in fireman switch board
Elevator controlling mainboard P1 sockets, a No. 8 terminal mouths (COM1 power supply DC24V) of termination of fireman's switch, another termination are accessed afterwards
One end of controlling switch, controlling switch No. 1 terminal mouth (EFX fire-fighting signals input point) of another termination.
Fireman's switch EFO includes the first fireman's switch and the second fireman's switch of series connection, and both are manual trigger switch.
First fireman's switch is arranged in fire fighting monitoring center；Second fireman's switch is arranged in elevator fire-fighting discrepancy layer.
First gas detector sends signal to the first cable concentrator by two lines bus, when dense carbon dioxide in building room
When degree is more than 0.3dB/m, the first cable concentrator triggering sound and light alarm element, sends light and audio alert prompting, building disappear
Anti- Security Personnel confirms fire location and state after receiving alarm, confirms the passenger condition in elevator, evacuates people in building
Member and passenger in elevator.
Second gas detector sends signal to the second cable concentrator by two lines bus, when carbon dioxide in elevator lobby
When concentration is more than 2dB/m, the second cable concentrator triggers normally closed controlling switch, and elevator enters fire fighting state, and elevator, which performs fire-fighting, compels
Drop pattern, evacuate elevator passenger.
In order to prevent secondary alarm device hinders for some reason from can not trigger automatically, or the intensity of a fire increases suddenly, causes secondary alarm to fill
Failure is put, fire-fighting Security Personnel can trigger the first fireman's switch or the second fireman's switch manually, allow elevator to be force-landed into fire-fighting
State.
By one-level warning device, secondary alarm device and the fireman's switch triggered manually reach and alarm, and keep away
Exempt from the purpose of unnecessary elevator power supply cut-out.
The announcement and teaching of book according to the above description, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula carries out appropriate change and modification.Therefore, the invention is not limited in embodiment disclosed and described above, to this
Some modifications and changes of invention should also be as falling into the scope of the claims of the present invention.In addition, although this specification
In used some specific terms, but these terms are merely for convenience of description, do not form any restrictions to the present invention.
Claims (8)
1. a kind of fireman's switch control system for elevator, including elevator-mainboard and the elevator-mainboard is accessed to trigger elevator
The fireman's switch of shutdown, it is characterised in that be additionally provided with：
First gas detector in building room；
The one-level warning device that signal according to the first gas detector is accordingly prompted；
Installed in the second gas detector of elevator lobby；
The secondary alarm device on loop between the elevator-mainboard and fireman's switch is connected on, the secondary alarm device is according to institute
The signal for stating second gas detector accordingly opens and closes.
2. it is used for the fireman's switch control system of elevator as claimed in claim 1, it is characterised in that the first gas detection
The detection of gas that device and second gas detector include sensing carbonomonoxide concentration, gas concentration lwevel and oxygen concentration passes
Sensor.
3. it is used for the fireman's switch control system of elevator as claimed in claim 1, it is characterised in that for dense carbon dioxide
Degree, the alarm threshold value of the second gas detector are higher than the alarm threshold value at least 1.5dB/m of first gas detector.
4. it is used for the fireman's switch control system of elevator as claimed in claim 1, it is characterised in that the one-level warning device
Include receiving the first cable concentrator of first gas detector signal in each building room, and be connected with first cable concentrator and by
Control the sound and/or light alarm element in first cable concentrator.
5. it is used for the fireman's switch control system of elevator as claimed in claim 1, it is characterised in that the secondary alarm device
Including the second cable concentrator of the second gas detector signal for receiving each elevator lobby, and be connected with second cable concentrator and
It is controlled by the controlling switch of second cable concentrator.
6. it is used for the fireman's switch control system of elevator as claimed in claim 5, it is characterised in that be additionally provided with detector and integrate
Cabinet, first cable concentrator, the second cable concentrator and controlling switch are installed in the detector integrated cabinet.
7. it is used for the fireman's switch control system of elevator as claimed in claim 1, it is characterised in that the fireman's switch includes
The first fireman's switch and the second fireman's switch of series connection, both are manual trigger switch.
8. it is used for the fireman's switch control system of elevator as claimed in claim 7, it is characterised in that first fireman's switch
It is arranged in fire fighting monitoring center；Second fireman's switch is arranged in elevator fire-fighting discrepancy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700017.1A CN107473042A (en) | 2017-08-16 | 2017-08-16 | A kind of fireman's switch control system for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700017.1A CN107473042A (en) | 2017-08-16 | 2017-08-16 | A kind of fireman's switch control system for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107473042A true CN107473042A (en) | 2017-12-15 |
Family
ID=60599603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710700017.1A Pending CN107473042A (en) | 2017-08-16 | 2017-08-16 | A kind of fireman's switch control system for elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107473042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11434106B2 (en) * | 2018-08-20 | 2022-09-06 | Otis Elevator Company | Elevator control to avoid hazardous conditions |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0532383A (en) * | 1991-07-29 | 1993-02-09 | Toshiba Corp | Emergency operation device for elevator against fire |
| JPH09142754A (en) * | 1995-11-17 | 1997-06-03 | Hitachi Ltd | Operation controller for elevator |
| JP2003341955A (en) * | 2002-05-29 | 2003-12-03 | Mitsubishi Electric Corp | Fire time rescue operating device for elevator |
| JP2009051613A (en) * | 2007-08-27 | 2009-03-12 | Mitsubishi Electric Corp | Fire evacuation elevator |
| JP2012184041A (en) * | 2011-03-03 | 2012-09-27 | Toshiba Elevator Co Ltd | Elevator system |
| JP2013193867A (en) * | 2012-03-22 | 2013-09-30 | Mitsubishi Electric Corp | Fire operation system for elevator |
| CN207175126U (en) * | 2017-08-16 | 2018-04-03 | 西子电梯集团有限公司 | A kind of fireman's switch control system for elevator |
-
2017
- 2017-08-16 CN CN201710700017.1A patent/CN107473042A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0532383A (en) * | 1991-07-29 | 1993-02-09 | Toshiba Corp | Emergency operation device for elevator against fire |
| JPH09142754A (en) * | 1995-11-17 | 1997-06-03 | Hitachi Ltd | Operation controller for elevator |
| JP2003341955A (en) * | 2002-05-29 | 2003-12-03 | Mitsubishi Electric Corp | Fire time rescue operating device for elevator |
| JP2009051613A (en) * | 2007-08-27 | 2009-03-12 | Mitsubishi Electric Corp | Fire evacuation elevator |
| JP2012184041A (en) * | 2011-03-03 | 2012-09-27 | Toshiba Elevator Co Ltd | Elevator system |
| JP2013193867A (en) * | 2012-03-22 | 2013-09-30 | Mitsubishi Electric Corp | Fire operation system for elevator |
| CN207175126U (en) * | 2017-08-16 | 2018-04-03 | 西子电梯集团有限公司 | A kind of fireman's switch control system for elevator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11434106B2 (en) * | 2018-08-20 | 2022-09-06 | Otis Elevator Company | Elevator control to avoid hazardous conditions |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210507 Address after: Room 305-w, 3rd floor, 11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200062 Applicant after: Xin Xi'ao Elevator Group Co.,Ltd. Address before: 23 / F, Xizi union building, 1-1 Qingchun East Road, Jianggan District, Hangzhou City, Zhejiang Province, 310020 Applicant before: XIZI ELEVATOR GROUP Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171215 |