CN107285156B - Elevator safety guarantee system and method thereof - Google Patents
Elevator safety guarantee system and method thereof Download PDFInfo
- Publication number
- CN107285156B CN107285156B CN201710707915.XA CN201710707915A CN107285156B CN 107285156 B CN107285156 B CN 107285156B CN 201710707915 A CN201710707915 A CN 201710707915A CN 107285156 B CN107285156 B CN 107285156B
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- Prior art keywords
- elevator
- floor
- car
- control system
- electromagnetic adsorption
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Classifications
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- 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
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/04—Kinds or types of lifts in, or associated with, buildings or other structures actuated pneumatically or hydraulically
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Abstract
The invention discloses an elevator safety guarantee system and a method thereof, wherein the elevator is a well elevator or a non-well elevator, and comprises an elevator control system and an elevator car, wherein the elevator car comprises an elevator car frame, an elevator car top and an elevator car bottom, the elevator car frame is connected with an elevator driving system, and pressure sensing safety devices are respectively arranged on the elevator car top and the elevator car bottom; the elevator control system is electrically connected with the elevator drive system and the pressure sensing safety device respectively. The elevator safety guarantee system and the elevator safety guarantee method can realize emergency braking under the condition of abnormal pressure during operation, ensure the safe operation of the elevator and enlarge the movable range in the projection space right above or below the elevator car.
Description
Technical Field
The invention relates to the technical field of elevator machinery, in particular to an elevator safety guarantee system and an elevator safety guarantee method.
Background
At present, most elevators are elevator shafts, and are provided with elevator shafts so as to isolate personnel limbs from touching elevator parts, thereby causing human body injury, and a safety barrier is formed between an elevator running space and a personnel reachable space, but once the elevator breaks down, the elevator door is opened abnormally, thus personnel fall into the elevator shafts easily, and personal danger is caused. For the elevator without a well, personnel easily fall onto the landing floor at the bottom layer when walking on the landing floor in the vertical projection space of the hole, so that personal danger is caused. And the arrangement of the well needs to occupy a certain space, so that the usable effective area of the building can be necessarily reduced.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an elevator safety protection system and a method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
an elevator safety guarantee method comprises the following steps:
the bottom plate of the car bottom or the car top generates displacement after being pressed, and triggers the electric switch to send signals to the elevator control system;
the elevator control system analyzes the processing signals and then sends instructions to the elevator driving system to stop the elevator;
eliminating interference sources;
the elevator control system is operated to give instructions to the elevator drive system and the elevator is restarted.
The elevator safety guarantee system comprises an elevator control system and an elevator car, wherein the elevator car comprises an elevator car frame, an elevator car top and an elevator car bottom, the elevator car frame is connected with an elevator driving system, and pressure sensing safety devices are respectively arranged on the elevator car top and the elevator car bottom; the elevator control system is electrically connected with the elevator drive system and the pressure sensing safety device respectively.
Further, the pressure sensing safety device comprises a bottom plate and an electrical switch.
Further, the car bottom is also provided with an area induction detector, and the area induction detector comprises an alarm device.
Further, a light source projector for warning the landing position area of the car is arranged around the bottom edge of the car.
Further, the elevator for the second floor comprises a second floor hole and a second floor plate with the shape matched with the second floor hole, and the second floor hole is locked and fixed on the second floor plate through a second floor electromagnetic adsorption device; the elevator control system is electrically connected with the second-floor electromagnetic adsorption device.
Further, the elevator for three floors comprises a second floor hole, a third floor hole, a car bottom cover plate, a second floor cover plate and a third floor cover plate, wherein the appearance of the car bottom cover plate, the second floor cover plate and the third floor cover plate are matched with the second floor hole and the third floor hole, the car bottom cover plate is locked and fixed through a car bottom electromagnetic adsorption device, the second floor hole is locked and fixed through a second floor electromagnetic adsorption device, and the third floor hole is locked and fixed through a third floor electromagnetic adsorption device; the elevator control system is respectively and electrically connected with the car bottom electromagnetic adsorption device, the second-floor electromagnetic adsorption device and the third-floor electromagnetic adsorption device.
Further, the elevator driving system is a hydraulic elevator driving system, and any one of the elevator driving system and the screw elevator driving system is dragged; the hydraulic elevator driving system comprises a hydraulic system and a guiding system, wherein the hydraulic system comprises a hydraulic pump and a hydraulic cylinder connected through an oil pipe, and the hydraulic cylinder is fixedly connected with the car frame; the guide system comprises two parallel first guide rails and two second guide rails which are vertically arranged, the hydraulic cylinder is arranged in the first guide rails, and the car frame moves up and down in the second guide rails through guide wheels which are fixedly connected.
Further, the first guide rail and the second guide rail are fixed to the wall through brackets respectively.
Further, a fixed baffle plate and a movable baffle plate which moves up and down along with the expansion and contraction of the hydraulic cylinder are arranged on the side surface, which is opposite to the car, of the first guide rail.
The invention has the outstanding effects that: according to the elevator safety guarantee system and the elevator safety guarantee method, emergency braking can be performed under the condition of abnormal pressure during operation, safe operation of an elevator is guaranteed, and the movable range in a projection space right above or below a car is enlarged; on the premise of ensuring the strength of the hydraulic cylinder and the operation safety of the elevator, the thinner the hydraulic cylinder is, the smaller the occupied space of the two guide rails is, and the house space utilization rate can be improved as well; after the elevator car leaves the landing, floor holes in the projection area of the elevator car can be effectively filled, the danger that personnel fall from the floor holes is prevented, and the safety of surrounding personnel is protected.
Drawings
FIG. 1 is a front view of embodiment 1 of the present invention;
FIG. 2 is a side view of embodiment 1 of the present invention;
FIG. 3 is a top view of examples 1-2 of the present invention;
fig. 4 is a front view of embodiment 2 of the present invention;
fig. 5 is a side view of embodiment 2 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
As shown in fig. 1-3, an elevator safety protection system in this embodiment is a hoistway-free elevator, and includes an elevator control system and a car 1, wherein the car 1 includes a car frame 11, a car top 12 and a car bottom 13, the car frame 11 is connected with an elevator driving system, and pressure sensing safety devices 4 are respectively arranged on the car top 12 and the car bottom 13; the pressure sensitive safety device 4 comprises a base plate 41 and an electrical switch 42. The elevator control system is electrically connected to the elevator drive system and the pressure-sensitive safety device 4, respectively. The car bottom 13 is also provided with a zone sensing detector 5, the zone sensing detector 5 comprising an alarm device. A light projector 19 for warning the landing position area of the car 1 is arranged around the edge of the car bottom 13.
The elevator safety guarantee system is used for an elevator of a second floor, and comprises a second floor hole 2 and a second floor plate 3 with the shape matched with the second floor hole 2, wherein the second floor hole 2 locks and fixes the second floor plate 3 through a second floor electromagnetic adsorption device 18; the elevator control system is electrically connected to the second floor electromagnetic adsorption device 18.
The elevator driving system is a hydraulic elevator driving system, the hydraulic elevator driving system comprises a hydraulic system and a guiding system, the hydraulic system comprises a hydraulic pump 6 and a hydraulic cylinder 8 connected through an oil pipe 7, and the hydraulic cylinder 8 is fixedly connected with a car frame 11; the guiding system comprises a first guide rail 9 and a second guide rail 10 which are vertically arranged in parallel, a hydraulic cylinder 8 is arranged in the first guide rail 9, and a car frame 11 moves up and down in the second guide rail 10 through a guide wheel 14 which is fixedly connected. The first rail 9 and the second rail 10 are respectively fixed to the wall by a bracket 15. The side surface of the first guide rail 9, which is opposite to the car 1, is provided with a fixed baffle 16 and a movable baffle 17 which moves up and down along with the expansion and contraction of the hydraulic cylinder 8.
An elevator safety guarantee method comprises the following steps:
the bottom plate 41 of the car bottom 13 or the car top 12 generates displacement after being pressed, and triggers the electric switch 42 to send a signal to the elevator control system;
the elevator control system analyzes the processing signals and then sends instructions to the elevator driving system to stop the elevator;
eliminating interference sources;
the elevator control system is operated to give instructions to the elevator drive system and the elevator is restarted.
When the embodiment is applied, when the elevator is at first floor, the elevator control system controls the second floor electromagnetic adsorption device 18 to enable the second floor cover plate 3 to be electromagnetically adsorbed in the second floor hole 2; at this time, the second floor hole 2 is filled with the second floor plate 3.
When the top of the lift car 1 moves to the second floor, the lift control system controls the second floor electromagnetic adsorption device 18 to release electromagnetic adsorption between the second floor plate 3 and the second floor hole 2, and the second floor plate 3 covers the top of the lift car 1 and rises to the second floor along with the lift car 1; at this time, the second floor hole 2 is filled with the car bottom 13. In the process of lifting the elevator, if the bottom plate 41 of the car roof 12 generates displacement after being subjected to pressure, the electric switch 42 is triggered to send a signal to the elevator control system, the elevator control system analyzes the processing signal and then sends an instruction to the elevator driving system, the elevator operation is stopped, and when an interference source is eliminated, an operator in the elevator operates the elevator control system to send an instruction to the elevator driving system, and the elevator is restarted.
When the elevator descends to the first floor and the second floor cover plate 3 runs to the second floor hole 2, the elevator control system controls the second floor electromagnetic adsorption device 18 to enable the second floor cover plate 3 to be electromagnetically adsorbed in the second floor hole 2; at this time, the second floor hole 2 is filled with the second floor plate 3. During the descent of the elevator, the light source projector 19 around the edge of the car bottom 13 is activated for alerting the landing zone of the car 1. If the area sensing detector 5 detects that there is a foreign object in the area of the landing position of the car 1, an alarm is issued. If the bottom plate 41 of the car bottom 13 is subjected to pressure and then generates displacement, the electric switch 42 is triggered to send a signal to the elevator control system, the elevator control system analyzes and processes the signal and then sends an instruction to the elevator driving system, the elevator operation is stopped, and after an interference source is eliminated, an operator in the elevator operates the elevator control system to send an instruction to the elevator driving system, and the elevator is restarted.
Example 2
As shown in fig. 3-5, an elevator safety protection system in this embodiment is a hoistway-free elevator, and includes an elevator control system and a car 1, wherein the car 1 includes a car frame 11, a car top 12 and a car bottom 13, the car frame 11 is connected with an elevator driving system, and pressure sensing safety devices 4 are respectively arranged on the car top 12 and the car bottom 13; the pressure sensitive safety device 4 comprises a base plate 41 and an electrical switch 42. The elevator control system is electrically connected to the elevator drive system and the pressure-sensitive safety device 4, respectively. The car bottom 13 is also provided with a zone sensing detector 5, the zone sensing detector 5 comprising an alarm device. A light projector 19 for warning the landing position area of the car 1 is arranged around the edge of the car bottom 13.
The elevator safety guarantee system of the embodiment is used for an elevator of three floors, the elevator comprises a second floor hole 2, a third floor hole 20, a car bottom cover plate 21, a second floor cover plate 3 and a third floor cover plate 22, wherein the appearance of the car bottom cover plate 21 is matched with the second floor hole 2 and the third floor hole 20, the car bottom 13 locks and fixes the car bottom cover plate 21 through a car bottom electromagnetic adsorption device 23, the second floor hole 2 locks and fixes the second floor cover plate 3 through a second floor electromagnetic adsorption device 18, and the third floor hole 20 locks and fixes the third floor cover plate 22 through a third floor electromagnetic adsorption device 24; the elevator control system is electrically connected with the car bottom electromagnetic adsorption device 23, the second-floor electromagnetic adsorption device 18 and the third-floor electromagnetic adsorption device 24 respectively.
The elevator driving system is a hydraulic elevator driving system, the hydraulic elevator driving system comprises a hydraulic system and a guiding system, the hydraulic system comprises a hydraulic pump 6 and a hydraulic cylinder 8 connected through an oil pipe 7, and the hydraulic cylinder 8 is fixedly connected with a car frame 11; the guiding system comprises a first guide rail 9 and a second guide rail 10 which are vertically arranged in parallel, a hydraulic cylinder 8 is arranged in the first guide rail 9, and a car frame 11 moves up and down in the second guide rail 10 through a guide wheel 14 which is fixedly connected. The first rail 9 and the second rail 10 are respectively fixed to the wall by a bracket 15. The side surface of the first guide rail 9, which is opposite to the car 1, is provided with a fixed baffle 16 and a movable baffle 17 which moves up and down along with the expansion and contraction of the hydraulic cylinder 8.
An elevator safety guarantee method comprises the following steps:
the bottom plate 41 of the car bottom 13 or the car top 12 generates displacement after being pressed, and triggers the electric switch 42 to send a signal to the elevator control system;
the elevator control system analyzes the processing signals and then sends instructions to the elevator driving system to stop the elevator;
eliminating interference sources;
the elevator control system is operated to give instructions to the elevator drive system and the elevator is restarted.
When the elevator is at first floor, the elevator control system controls the car bottom electromagnetic adsorption device 23, the second floor electromagnetic adsorption device 18 and the third floor electromagnetic adsorption device 24 respectively, so that the car bottom cover plate 21 is electromagnetically adsorbed at the bottom of the car 1, the second floor cover plate 3 is electromagnetically adsorbed at the second floor hole 2, and the third floor cover plate 22 is electromagnetically adsorbed at the third floor hole 20;
when the top of the lift car 1 moves to the second floor, the lift control system controls the second floor electromagnetic adsorption device 18 to release electromagnetic adsorption between the second floor plate 3 and the second floor hole 2, and the second floor plate 3 covers the top of the lift car 1 and rises together with the lift car 1; when the car bottom cover plate 21 moves to the second floor hole 2, the elevator control system controls the car bottom electromagnetic adsorption device 23 to release electromagnetic adsorption between the car bottom cover plate 21 and the bottom of the car 1, and simultaneously controls the second floor electromagnetic adsorption device 18 to enable the car bottom cover plate 21 to be electromagnetically adsorbed to the second floor hole 2;
when the top of the lift car 1 moves to the third floor, the lift control system controls the third floor electromagnetic adsorption device 24 to release electromagnetic adsorption between the third floor 22 and the third floor hole 20, and the third floor 22 covers the top of the second floor 3 and rises together with the lift car;
when the elevator descends to the second floor and the third floor cover plate 22 runs to the third floor hole 20, the elevator control system controls the third floor electromagnetic adsorption device 24 to enable the third floor cover plate 22 to be electromagnetically adsorbed to the third floor hole 20; when the bottom of the car 1 moves to the car bottom cover plate 21, the elevator control system controls the second-floor electromagnetic adsorption device 18 to release electromagnetic adsorption between the car bottom cover plate 21 and the second-floor holes 2, and controls the car bottom electromagnetic adsorption device 23 to enable the car bottom cover plate 21 to be electromagnetically adsorbed to the bottom of the car 1;
when the elevator descends to the first floor and the second floor cover plate 3 runs to the second floor hole 2, the elevator control system controls the second floor electromagnetic adsorption device 18 to enable the second floor cover plate 3 to be electromagnetically adsorbed to the second floor hole 2.
In the process of lifting the elevator, if the bottom plate 41 of the car roof 12 generates displacement after being subjected to pressure, the electric switch 42 is triggered to send a signal to the elevator control system, the elevator control system analyzes the processing signal and then sends an instruction to the elevator driving system, the elevator operation is stopped, and when an interference source is eliminated, an operator in the elevator operates the elevator control system to send an instruction to the elevator driving system, and the elevator is restarted.
During the descent of the elevator, the light source projector 19 around the edge of the car bottom 13 is activated for alerting the landing zone of the car 1. If the area sensing detector 5 detects that there is a foreign object in the area of the landing position of the car 1, an alarm is issued. If the bottom plate 41 of the car bottom 13 is subjected to pressure and then generates displacement, the electric switch 42 is triggered to send a signal to the elevator control system, the elevator control system analyzes and processes the signal and then sends an instruction to the elevator driving system, the elevator operation is stopped, and after an interference source is eliminated, an operator in the elevator operates the elevator control system to send an instruction to the elevator driving system, and the elevator is restarted.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. An elevator safety guarantee system is characterized in that: the elevator is a well elevator or a non-well elevator, and comprises an elevator control system and an elevator car, wherein the elevator car comprises an elevator car frame, an elevator car top and an elevator car bottom, the elevator car frame is connected with an elevator driving system, and pressure sensing safety devices are respectively arranged on the elevator car top and the elevator car bottom; the elevator control system is respectively and electrically connected with the elevator driving system and the pressure sensing safety device;
a light source projector used for warning the landing position area of the car is arranged around the bottom edge of the car;
the pressure sensing safety device comprises a bottom plate and an electrical switch;
if the bottom plate of the elevator platform is subjected to pressure and then generates displacement, the electric switch is triggered to send a signal to the elevator control system, the elevator control system analyzes the processed signal and then sends an instruction to the elevator driving system, the elevator operation is stopped, and after an interference source is eliminated, an operator in the elevator operates the elevator control system to send an instruction to the elevator driving system, and the elevator is restarted;
the elevator for the second floor comprises a second floor hole and a second floor plate with the shape matched with the second floor hole, and the second floor hole is locked and fixed on the second floor plate through a second floor electromagnetic adsorption device; the elevator control system is electrically connected with the second-floor electromagnetic adsorption device;
the elevator comprises a second floor hole, a third floor hole, a car bottom cover plate, a second floor cover plate and a third floor cover plate, wherein the appearance of the car bottom cover plate, the second floor cover plate and the third floor cover plate are matched with the second floor hole and the third floor hole, the car bottom cover plate is locked and fixed through a car bottom electromagnetic adsorption device, the second floor hole is locked and fixed through a second floor electromagnetic adsorption device, and the third floor hole is locked and fixed through a third floor electromagnetic adsorption device; the elevator control system is respectively and electrically connected with the car bottom electromagnetic adsorption device, the second-floor electromagnetic adsorption device and the third-floor electromagnetic adsorption device.
2. An elevator safety assurance system according to claim 1, wherein: the car bottom is also provided with an area induction detector, and the area induction detector comprises an alarm device.
3. An elevator safety assurance system according to claim 1, wherein: the elevator driving system is a hydraulic elevator driving system, and any one of the elevator driving system and the screw elevator driving system is dragged; the hydraulic elevator driving system comprises a hydraulic system and a guiding system, wherein the hydraulic system comprises a hydraulic pump and a hydraulic cylinder connected through an oil pipe, and the hydraulic cylinder is fixedly connected with the car frame; the guide system comprises two parallel first guide rails and two second guide rails which are vertically arranged, the hydraulic cylinder is arranged in the first guide rails, and the car frame moves up and down in the second guide rails through guide wheels which are fixedly connected.
4. An elevator safety assurance system according to claim 3, wherein: the first guide rail and the second guide rail are respectively fixed on the wall through brackets.
5. An elevator safety assurance system according to claim 3, wherein: the side surface, which is opposite to the car, of the first guide rail is provided with a fixed baffle plate and a movable baffle plate which moves up and down along with the expansion and contraction of the hydraulic cylinder.
6. An elevator safety guarantee method for an elevator safety guarantee system as claimed in claim 1, comprising the steps of:
the bottom plate of the car bottom or the car top generates displacement after being pressed, and triggers the electric switch to send signals to the elevator control system;
the elevator control system analyzes the processing signals and then sends instructions to the elevator driving system to stop the elevator;
eliminating interference sources;
operating the elevator control system to send an instruction to the elevator driving system, and re-operating the elevator;
in the descending process of the elevator, a light source projector around the bottom edge of the elevator car is started and used for warning the elevator car landing position area, and if the area sensing detector detects that foreign matters exist in the elevator car landing position area, an alarm is sent out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710707915.XA CN107285156B (en) | 2017-08-17 | 2017-08-17 | Elevator safety guarantee system and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710707915.XA CN107285156B (en) | 2017-08-17 | 2017-08-17 | Elevator safety guarantee system and method thereof |
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| Publication Number | Publication Date |
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| CN107285156A CN107285156A (en) | 2017-10-24 |
| CN107285156B true CN107285156B (en) | 2023-07-21 |
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| CN201710707915.XA Active CN107285156B (en) | 2017-08-17 | 2017-08-17 | Elevator safety guarantee system and method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108408543B (en) * | 2018-01-30 | 2019-12-13 | 上海盛蒂斯自动化设备股份有限公司 | Elevator landing floor hole filling system |
| CN108584589A (en) * | 2018-01-30 | 2018-09-28 | 上海盛蒂斯自动化设备股份有限公司 | A kind of elevator floor stops floor hole fills up system and method |
| CN108275551B (en) * | 2018-03-26 | 2024-04-09 | 西继迅达电梯有限公司 | Telescopic car bottom of home elevator |
| CN108946402A (en) * | 2018-09-12 | 2018-12-07 | 东南电梯股份有限公司 | A kind of compound building elevator |
| CN110436290A (en) * | 2019-06-28 | 2019-11-12 | 东南电梯股份有限公司 | Without hoistway elevator running space safety system |
| CN113716501A (en) * | 2021-08-31 | 2021-11-30 | 国网福建省电力有限公司检修分公司 | Falling-preventing object injury warning device for overhead working truck and working method of falling-preventing object injury warning device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0873155A (en) * | 1994-09-02 | 1996-03-19 | Ikeda Kinuori Kk | Home elevator without shaft |
| JP2001322777A (en) * | 2000-05-15 | 2001-11-20 | Otis Elevator Co | Fluid pressure elevator |
| JP5631570B2 (en) * | 2009-09-24 | 2014-11-26 | 東芝エレベータ株式会社 | Elevator equipment |
| CN202296659U (en) * | 2011-10-12 | 2012-07-04 | 快意电梯有限公司 | Safety protection device for lift car |
| CN203284004U (en) * | 2013-04-25 | 2013-11-13 | 苏州富士佳电梯有限公司 | Safe elevator car |
| CN205709297U (en) * | 2016-06-27 | 2016-11-23 | 爱默生电梯有限公司 | A kind of emergency staircase |
| CN206244224U (en) * | 2016-11-11 | 2017-06-13 | 西南交通大学 | Manned lowering or hoisting gear in a kind of villa |
| CN207226713U (en) * | 2017-08-17 | 2018-04-13 | 上海盛蒂斯自动化设备股份有限公司 | A kind of elevator safety safeguards system |
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2017
- 2017-08-17 CN CN201710707915.XA patent/CN107285156B/en active Active
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