CN111285232A - Elevator landing door lock protection method - Google Patents
Elevator landing door lock protection method Download PDFInfo
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- CN111285232A CN111285232A CN202010151778.8A CN202010151778A CN111285232A CN 111285232 A CN111285232 A CN 111285232A CN 202010151778 A CN202010151778 A CN 202010151778A CN 111285232 A CN111285232 A CN 111285232A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
- B66B13/165—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position electrical
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- Elevator Door Apparatuses (AREA)
Abstract
The invention discloses an elevator landing door lock protection method, which is realized by a first sensor and a second sensor which are respectively arranged at the upper end and the lower end of a landing door of each landing and an electric magnetic mechanism arranged on a landing door lock based on a host, wherein the first sensor and the second sensor detect signals of an elevator car in real time and transmit the detected signals to the host; setting the working state of the main machine, and judging whether the position of the elevator car is at a set position according to the selected working state and the received signal; if the landing door lock is in the set position, a signal is sent out to control the electric magnetic mechanism of the landing door to act, so that the landing door lock is unlocked; if the position is not at the set position, the electric magnetic mechanism is reset and does not act; the safety of personnel in the car or the rescue, the maintenance or the lift car is ensured, and the potential safety hazard is avoided.
Description
Technical Field
The invention relates to the technical field of elevator safety of special equipment, in particular to a method for protecting an elevator landing door lock.
Background
The elevator is a device which vertically moves among different floors in a hoistway, a landing door is arranged on each landing of the elevator, and the landing door drives a car door to open so that passengers can get in and out of the car. When the elevator runs and the lift car is not at the flat floor position, the floor lift car doors are in a closed state to prevent accidents. Meanwhile, in order to prevent passengers in the lift car from being dangerous when the lift car is opened to a flat floor, a door lock is arranged on the floor car door, when the lift car reaches the flat floor position, the floor car door is opened, an elevator door lock loop is disconnected, and the elevator stops running and cannot be started, so that the safety of the passengers is guaranteed. When the elevator is in a power failure, rescue or overhaul state, the landing door of the elevator can be opened only by the triangular key.
In recent years, accidents caused by falling of people into a hoistway are increasing due to mistaken opening of elevator landing doors, and one of the reasons for the accidents is abuse of an elevator external key (triangular key). At present, a landing door lock of an elevator landing door does not have any protection measure, and can be opened at will only by an external key, so that potential safety hazards are caused.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art and provides a protection method for a landing door lock of an elevator, which can prevent a safety accident caused by unlocking the landing door lock by a key at an improper position.
The elevator landing door lock protection method according to the embodiment of the aspect of the invention is realized by a first sensor and a second sensor which are respectively arranged at the upper end and the lower end of a landing door of each landing and an electric magnetic mechanism arranged on a landing door lock based on a host,
the first sensor and the second sensor detect signals of the elevator car in real time and transmit the detected signals to the host;
setting the working state of the main machine, and judging whether the position of the elevator car is at a set position according to the selected working state and the received signal;
if the landing door lock is in the set position, a signal is sent out to control the electric magnetic mechanism of the landing door to act, so that the landing door lock is unlocked; if the magnetic force is not in or away from the current layer, the next layer or between the current layer and the next layer, the electromagnetic force mechanism is reset and does not act.
The elevator landing door lock protection device according to the embodiment of the invention at least has the following technical effects: when the elevator is in a normal running state or a maintenance or rescue state, the position of the elevator car is detected through a first sensor and a second sensor which are arranged on the landing door of each landing, whether the elevator car is in a set safe position or not is judged through the information detected by the sensors and the current working state of the host, if so, the electromagnetic lock is opened through the action of the electromagnetic mechanism, the landing door can be opened through an external key only after the electromagnetic lock is opened, and otherwise, the landing door lock cannot be opened; the safety of personnel in the car or the rescue, the maintenance or the lift car is ensured, and the potential safety hazard is avoided.
According to some embodiments of the invention, the operational state comprises a rescue state and a maintenance state; when the rescue device is in the rescue state, the set position is the current layer or between the current layer and the next layer; when the device is in a maintenance state, the set position is between the current layer and the next layer or the next layer.
According to some embodiments of the invention, the specific step of judging whether the position of the elevator car is at the set position when the host machine is in the rescue state comprises:
setting the elevator landing as the nth floor, setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the landing as An and Bn, and setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the (n-1) th floor as An-1 and Bn-1, wherein n is a positive and negative integer;
when the first sensor An detects a car signal alone but the second sensor Bn does not detect the car signal, the elevator car is judged not to be on the current floor, the next floor or between the current floor and the next floor, and the electromagnetic power mechanism of the landing door does not act;
when the first sensor An and the second sensor Bn both detect the car signals, the elevator car is judged to be on the floor, and the electric magnetic mechanism of the floor door of the floor acts;
when the first sensor An does not detect the car signal, but the second sensor Bn alone detects the car signal, the elevator car is judged to be between the current floor and the next floor, and the electromagnetic mechanism (300) of the door of the current floor is operated.
According to some embodiments of the invention, the step of determining whether the position of the elevator car is at the set position when the main machine is in the maintenance state comprises:
setting the elevator landing as the nth floor, setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the landing as An and Bn, and setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the (n-1) th floor as An-1 and Bn-1, wherein n is a positive and negative integer;
when the second sensor Bn and the first sensor An-1 both detect the car signal, the elevator car is judged to be between the current floor and the next floor, and the electric magnetic mechanism of the floor door of the current floor acts;
when the second sensor Bn does not detect the car signal, but the first sensor An-1 detects the car signal, the elevator car is judged to be at the next floor, and the electric magnetic mechanism of the landing door acts;
when the first sensor An-1 and the second sensor Bn-1 both detect the car signals, the situation that the elevator car is at the next floor and the electric magnetic mechanism of the landing door acts is judged;
the first sensor An-1 does not detect a signal, only the second sensor Bn-1 detects a car signal, and then the elevator car is judged not to be in the current floor, the next floor or between the current floor and the next floor, and the electromagnetic power mechanism of the landing door does not act.
According to some embodiments of the present invention, the electromagnetic force mechanism comprises a scissors fastening structure, a first electromagnetic force module disposed at a rear end of the scissors fastening structure, and a first restoring structure;
when the scissors do not act, the first electric magnetic module is not electrified, and the front end of the scissors fastening structure is fastened on the landing door lock under the action of the restoring force of the first resetting structure;
when the scissors are operated, the first electric magnetic module is electrified to generate repulsive force larger than the restoring force of the first reset structure, so that the front end of the scissors fastening structure loosens the layer door lock.
According to some embodiments of the present invention, the electromagnetic force mechanism includes a telescopic armature, a second electromagnetic force module and a second reset structure, wherein the front end of the telescopic armature movably penetrates through a rotatable rod of a lock hook of the landing door lock, and the rear end of the telescopic armature is sleeved in the second electromagnetic force module;
when the second electric magnetic module does not act, the second electric magnetic module is not electrified, and the front end of the telescopic armature iron penetrates through the rotatable rod of the layer door lock latch hook under the action of the restoring force of the second reset structure;
during action, the second electric magnetic module is electrified to generate suction force larger than the restoring force of the second reset structure, so that the front end of the telescopic armature iron loosens the rotatable rod of the layer door lock hook.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a schematic diagram illustrating power on of an embodiment of the present invention;
fig. 2-7 are schematic diagrams of sensor detection when the elevator is in different positions according to the embodiment of the invention;
FIG. 8 is a control diagram of a corresponding device according to an embodiment of the present invention;
FIG. 9 is a schematic view of an electromagnetic force mechanism according to an embodiment of the present invention;
fig. 10 is a schematic view of an electromagnetic force mechanism according to a second embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 8 to 10, the method for protecting an elevator landing door lock according to an embodiment of the present invention is implemented based on a main machine 100, first and second sensors A, B provided at upper and lower ends of a landing door of each landing and an electromagnetic force mechanism 300 provided at the landing door lock,
the first sensor and the second sensor detect signals of the elevator car in real time and transmit the detected signals to the host;
setting the working state of the main machine, and judging whether the position of the elevator car is at a set position according to the selected working state and the received signal;
if the landing door lock is in the set position, a signal is sent out to control the electric magnetic mechanism of the landing door to act, so that the landing door lock is unlocked; if the magnetic force is not in or away from the current layer, the next layer or between the current layer and the next layer, the electromagnetic force mechanism is reset and does not act.
When the elevator is in a normal running state or a maintenance or rescue state, the position of the elevator car is detected through a first sensor and a second sensor which are arranged on the landing door of each landing, whether the elevator car is in a set safe position or not is judged through the information detected by the sensors and the current working state of the host, if so, the electromagnetic lock is opened through the action of the electromagnetic mechanism, the landing door can be opened through an external key only after the electromagnetic lock is opened, and otherwise, the landing door lock cannot be opened; the safety of personnel in the car or the rescue, the maintenance or the lift car is ensured, and the potential safety hazard is avoided.
In some embodiments of the invention, the operating state comprises a rescue state and a maintenance state; when the rescue device is in the rescue state, the set position is the current layer or between the current layer and the next layer; when the device is in a maintenance state, the set position is between the current layer and the next layer or the next layer.
With further reference to fig. 2-7, in some embodiments of the invention, the step of determining whether the position of the elevator car is at the current floor, the next floor, or between the current floor and the next floor when the host is in the rescue state comprises:
the landing is set as the nth floor, the first sensor and the second sensor which are arranged at the upper end and the lower end of the landing elevator landing door are An and Bn, the first sensor and the second sensor which are arranged at the upper end and the lower end of the landing elevator landing door are An-1 and Bn-1, wherein n is a positive integer and a negative integer.
When the first sensor An detects the car signal alone but the second sensor Bn does not detect the car signal, the elevator car is judged not to be on the floor or between the floor and the next floor, and the electromagnetic mechanism of the floor door of the floor does not act;
when the first sensor An and the second sensor Bn both detect the car signals, the elevator car is judged to be on the floor, and the electric magnetic mechanism of the floor door of the floor acts;
when the first sensor An does not detect the car signal, but the second sensor Bn alone detects the car signal, the elevator car is judged to be between the current floor and the next floor, and the electromagnetic mechanism (300) of the door of the current floor is operated.
According to some embodiments of the invention, the step of determining whether the position of the elevator car is at the next floor or between the current floor and the next floor when the main machine is in the maintenance state comprises:
setting the elevator landing as the nth floor, setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the landing as An and Bn, and setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the (n-1) th floor as An-1 and Bn-1;
when the second sensor Bn and the first sensor An-1 both detect the car signal, the elevator car is judged to be between the current floor and the next floor, and the electric magnetic mechanism of the floor door of the current floor acts;
when the second sensor Bn does not detect the car signal, but the first sensor An-1 detects the car signal, the elevator car is judged to be at the next floor, and the electric magnetic mechanism of the landing door acts;
when the first sensor An-1 and the second sensor Bn-1 both detect the car signals, the situation that the elevator car is at the next floor and the electric magnetic mechanism of the landing door acts is judged;
the first sensor An-1 does not detect a signal, only the second sensor Bn-1 detects a car signal, and then the elevator car is judged not to be in the current floor, the next floor or between the current floor and the next floor, and the electromagnetic power mechanism of the landing door does not act.
In some embodiments of the present invention, the electromagnetic force mechanism comprises a scissors fastening structure, a first electromagnetic force module disposed at a tail end of the scissors fastening structure, and a first reset structure;
when the scissors do not act, the first electric magnetic module is not electrified, and the front end of the scissors fastening structure is fastened on the landing door lock under the action of the restoring force of the first resetting structure;
when the scissors are operated, the first electric magnetic module is electrified to generate repulsive force larger than the restoring force of the first reset structure, so that the front end of the scissors fastening structure loosens the layer door lock.
In some embodiments of the present invention, the electromagnetic force mechanism includes a telescopic armature, a second electromagnetic force module and a second reset structure, the front end of the telescopic armature is movably disposed on a rotatable rod of the landing door lock latch hook, and the rear end of the telescopic armature is sleeved in the second electromagnetic force module;
when the second electric magnetic module does not act, the second electric magnetic module is not electrified, and the front end of the telescopic armature iron penetrates through the rotatable rod of the layer door lock latch hook under the action of the restoring force of the second reset structure;
during action, the second electric magnetic module is electrified to generate suction force larger than the restoring force of the second reset structure, so that the front end of the telescopic armature iron loosens the rotatable rod of the layer door lock hook.
The clamping speed measuring device according to the embodiment of the invention is described in detail in a specific embodiment with reference to fig. 1 to 10. It is to be understood that the following description is only exemplary, and not a specific limitation of the invention.
As shown in fig. 1, 8 and 9, the apparatus for implementing the method for protecting the landing door lock of the elevator comprises a main machine 100, first and second sensors A, B respectively disposed at the upper and lower ends of the landing door 400 of each landing, and an electromagnetic power mechanism 300 disposed on the landing door lock, wherein the main machine 100 comprises a microprocessor 110, the input terminal of the microprocessor 110 is electrically connected to the first and second sensors A, B through an optoelectronic isolation device 120, and the output terminal of the microprocessor 110 is electrically connected to the electromagnetic power mechanism 300 through a current driver 130; the microprocessor 110 may adopt an STC series 51 single chip microcomputer, the photoelectric isolation device 120 may adopt a 6N137 photoelectric isolation chip, and the current driver 130 may adopt a 2803 current driving chip; the main machine 100 is used for setting working states, such as a normal operation state, a maintenance state, a rescue state and the like, judging the position of the elevator car in a specific state according to the received sensor signal, and sending a corresponding instruction to control the action of the electromagnetic power mechanism 300; in some embodiments, the first and second sensors A, B are respectively installed at the upper and lower ends of the elevator landing door 400 at a distance of less than or equal to 10cm from the top end or the bottom end of the landing door; for detecting the position of the elevator car and transmitting the detected signal to the main machine 100; the first sensor A, B and the second sensor A, B can adopt reflective photoelectric sensors or Hall proximity sensors, and can sense the positions of the cars without touching the cars when the cars approach; with further reference to fig. 9, the electromagnetic power mechanism includes: the scissors fastening structure 310 comprises a first fastening rod 311 and a second fastening rod 312, the first fastening rod 311 and the second fastening rod 312 are pivotally connected through a rotating shaft 315, the rotating shaft 315 is fixed on a landing door, the tail ends of the first fastening rod 311 and the second fastening rod 312 are respectively provided with a first magnet 321 or a second magnet 322, and the magnetic poles of the first magnet 321 and the second magnet 322 are respectively adjacent to the same pole of the S pole or the N pole generated by electrifying the first electric magnetic module 320; the front ends of the first fastening rod 311 and the second fastening rod 312 can be matched with each other to fasten or release the layer door lock, so that the layer door lock can be opened or closed; the inner sides of the front ends of the first buckling rod 311 and the second buckling rod 312 are oppositely provided with a gear 313, so that the first buckling rod 311 and the second buckling rod 312 can buckle the layer door lock in each direction, and the situation that the buckling is not in place is avoided; the limiting structure 314 is oppositely arranged on the outer side of the front end of the first buckling rod 311 and the outer side of the front end of the second buckling rod 312 on the landing door, so that the interference on other parts caused by too large loosening angle of the two buckling rods 311 and 312 during electrification is avoided. The first electric magnetic module 320 is arranged at the tail end of the scissors fastening structure and is used for controlling the front end action of the scissors fastening structure; the first reset structure 330 adopts a reset spring, one end of the reset spring is connected to the tail of the first buckling rod 311, and the other end of the reset spring is connected to the tail of the second buckling rod 312, and is used for controlling the resetting of the scissors buckling structure; the advantage of adopting reset spring is that can produce great fastening force, tightly detain lock hole structure for it can not the free rotation.
When the host machine is set to be in a rescue working state, the elevator floor door lock protection method specifically comprises the following steps:
the elevator landing is marked as the nth floor, and the first sensor and the second sensor which are arranged at the upper end and the lower end of the elevator landing floor door of the landing are An and Bn, so that the first sensor and the second sensor which are arranged at the upper end and the lower end of the elevator landing floor door of the (n-1) th floor are An-1 and Bn-1;
when the first sensor An detects a car signal alone and the second sensor Bn does not detect a car signal, it is determined that the elevator car is not on the floor or between the floor and the next floor, at this time, the first electromagnetic module 320 of the floor door of the floor is not powered, and the front ends of the first buckling rod 311 and the second buckling rod 312 are buckled on the floor door lock under the action of the restoring force of the first restoring structure 330;
when the first sensor An and the second sensor Bn both detect car signals, it is determined that the elevator car is on the floor, the first electric magnetic module 320 of the floor door of the floor is energized to generate a repulsive force greater than the restoring force of the first reset structure, so that the front ends of the first buckling rod 311 and the second buckling rod 312 are released to open the floor door lock;
when the first sensor An does not detect a car signal, but the second sensor Bn detects the car signal alone, it is determined that the elevator car is between the current floor and the next floor, the first electromagnetic module 320 of the landing floor door is energized to generate a repulsive force greater than the restoring force of the first restoring structure, so that the front ends of the first buckling rod 311 and the second buckling rod 312 loosen the landing door lock;
when the host machine is set to be in a maintenance working state, the elevator floor door lock protection method comprises the following specific steps:
similarly, the landing is set as the nth floor, the first sensor and the second sensor which are arranged at the upper end and the lower end of the landing elevator landing door are An and Bn, and the first sensor and the second sensor which are arranged at the upper end and the lower end of the landing elevator landing door are An-1 and Bn-1;
when the second sensor Bn and the first sensor An-1 both detect car signals, it is determined that the elevator car is between the floor and the next floor, the first electromagnetic module 320 of the landing floor door is energized to generate a repulsive force greater than the restoring force of the first restoring structure, so that the front ends of the first buckling rod 311 and the second buckling rod 312 loosen and unlock the landing door lock;
when the second sensor Bn does not detect a car signal, but the first sensor An-1 detects a car signal, it is determined that the elevator car is at the next floor, the first electric magnetic module 320 of the landing door is energized to generate a repulsive force greater than the restoring force of the first restoring structure, so that the front ends of the first buckling rod 311 and the second buckling rod 312 loosen and open the landing door lock;
when the first sensor An-1 and the second sensor Bn-1 both detect the car signals, the elevator car is judged to be at the next floor, the first electric magnetic module 320 of the landing door is electrified to generate a repulsive force greater than the restoring force of the first reset structure, and the front ends of the first buckling rod 311 and the second buckling rod 312 are loosened to open the landing door lock;
the first sensor An-1 does not detect a signal, only the second sensor Bn-1 detects a car signal, and then it is determined that the elevator car is not at the next floor or between the floor and the next floor, at this time, the first electromagnetic module 320 of the landing floor door is not powered, and the front ends of the first buckling rod 311 and the second buckling rod 312 are buckled on the landing door lock under the restoring force of the first restoring structure 330.
With further reference to fig. 10, if the electromagnetic power mechanism includes a telescopic armature, a second electromagnetic power module and a second reset structure, no matter the host is in a rescue state or a maintenance state, the judgment of the position of the car and the transmission of the host signal are the same as those of the previous embodiment, and the difference lies in the action of the electromagnetic power mechanism, specifically, when the host is not in action, the second electromagnetic power module is not powered on, and the front end of the telescopic armature penetrates through the rotatable rod of the layer door lock hook under the action of the restoring force of the second reset structure; during action, the second electric magnetic module is electrified to generate suction force larger than the restoring force of the second reset structure, so that the front end of the telescopic armature iron loosens the rotatable rod of the layer door lock hook.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. The elevator landing door lock protection method is realized by a first sensor and a second sensor which are respectively arranged at the upper end and the lower end of a landing door of each landing and an electric magnetic mechanism arranged on a landing door lock based on a host machine,
the first sensor and the second sensor detect signals of the elevator car in real time and transmit the detected signals to the host;
setting the working state of the main machine, and judging whether the position of the elevator car is at a set position according to the selected working state and the received signal;
if the landing door lock is in the set position, a signal is sent out to control the electric magnetic mechanism of the landing door to act, so that the landing door lock is unlocked; if the magnetic force is not in or away from the current layer, the next layer or between the current layer and the next layer, the electromagnetic force mechanism is reset and does not act.
2. The elevator landing door lock protection method according to claim 1, wherein the working state includes a rescue state and a maintenance state; when the rescue device is in the rescue state, the set position is the current layer or between the current layer and the next layer; when the device is in a maintenance state, the set position is between the current layer and the next layer or the next layer.
3. The elevator landing door lock protection method according to claim 2, wherein the specific step of judging whether the position of the elevator car is at the set position when the host machine is in the rescue state comprises:
setting the elevator landing as the nth floor, setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the landing as An and Bn, and setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the (n-1) th floor as An-1 and Bn-1, wherein n is a positive and negative integer;
when the first sensor An detects the car signal alone but the second sensor Bn does not detect the car signal, the elevator car is judged not to be on the current floor, the next floor or between the current floor and the next floor, and the electromagnetic power mechanism (300) of the landing door does not act;
when the first sensor An and the second sensor Bn both detect the car signals, the elevator car is judged to be on the floor, and An electric magnetic mechanism (300) of the floor door of the floor is operated;
when the first sensor An does not detect the car signal, but the second sensor Bn alone detects the car signal, the elevator car is judged to be between the current floor and the next floor, and the electromagnetic mechanism (300) of the door of the current floor is operated.
4. The method as claimed in claim 2, wherein the step of determining whether the position of the elevator car is at the set position when the main machine is in the maintenance state comprises:
setting the elevator landing as the nth floor, setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the landing as An and Bn, and setting the first and second sensors arranged at the upper and lower ends of the elevator landing door of the (n-1) th floor as An-1 and Bn-1, wherein n is a positive and negative integer;
when the second sensor Bn and the first sensor An-1 both detect the car signal, the elevator car is judged to be between the current floor and the next floor, and the electric magnetic mechanism of the floor door of the current floor acts;
when the second sensor Bn does not detect the car signal, but the first sensor An-1 detects the car signal, the elevator car is judged to be at the next floor, and the electric magnetic mechanism of the landing door acts;
when the first sensor An-1 and the second sensor Bn-1 both detect the car signals, the situation that the elevator car is at the next floor and the electric magnetic mechanism of the landing door acts is judged;
the first sensor An-1 does not detect a signal, only the second sensor Bn-1 detects a car signal, and then the elevator car is judged not to be in the current floor, the next floor or between the current floor and the next floor, and the electromagnetic power mechanism of the landing door does not act.
5. The method for protecting an elevator landing door lock according to any one of claims 1 to 4, wherein the electromagnetic mechanism comprises a scissors fastening structure, a first electromagnetic module disposed at a rear end of the scissors fastening structure, and a first reset structure;
when the scissors do not act, the first electric magnetic module is not electrified, and the front end of the scissors fastening structure is fastened on the landing door lock under the action of the restoring force of the first resetting structure;
when the scissors are operated, the first electric magnetic module is electrified to generate repulsive force larger than the restoring force of the first reset structure, so that the front end of the scissors fastening structure loosens the layer door lock.
6. The elevator landing door lock protection device according to any one of claims 1 to 4, wherein the electromagnetic force mechanism comprises a telescopic armature, a second electromagnetic force module and a second reset structure, the front end of the telescopic armature is movably arranged on a rotatable rod of a landing door lock hook in a penetrating way, and the rear end of the telescopic armature is sleeved in the second electromagnetic force module;
when the second electric magnetic module does not act, the second electric magnetic module is not electrified, and the front end of the telescopic armature iron penetrates through the rotatable rod of the layer door lock latch hook under the action of the restoring force of the second reset structure;
during action, the second electric magnetic module is electrified to generate suction force larger than the restoring force of the second reset structure, so that the front end of the telescopic armature iron loosens the rotatable rod of the layer door lock hook.
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| CN106744214A (en) * | 2017-03-29 | 2017-05-31 | 日立电梯（中国）有限公司 | A kind of layer door with defencive function is opened |
| CN206667948U (en) * | 2016-12-30 | 2017-11-24 | 中船重工(武汉)凌久信息技术有限公司 | A kind of low power-consumption intelligent lock |
| CN109879144A (en) * | 2019-03-01 | 2019-06-14 | 日立电梯（中国）有限公司 | Layer door unlocking control system, method, apparatus, computer equipment and storage medium |
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2020
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| EP1197467A1 (en) * | 2000-09-15 | 2002-04-17 | Thyssenkrupp Elevator Manufacturing France SA | Device for locking an elevator landing door |
| CN105479515A (en) * | 2015-12-23 | 2016-04-13 | 佛山欧亚特机械设备有限公司 | Fan-shaped tooth rotation structure |
| CN205709373U (en) * | 2016-06-01 | 2016-11-23 | 华南理工大学 | A kind of elevator is anti-steps on sky accident signaling system |
| CN206667948U (en) * | 2016-12-30 | 2017-11-24 | 中船重工(武汉)凌久信息技术有限公司 | A kind of low power-consumption intelligent lock |
| CN106744214A (en) * | 2017-03-29 | 2017-05-31 | 日立电梯（中国）有限公司 | A kind of layer door with defencive function is opened |
| CN109879144A (en) * | 2019-03-01 | 2019-06-14 | 日立电梯（中国）有限公司 | Layer door unlocking control system, method, apparatus, computer equipment and storage medium |
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Application publication date: 20200616 |
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