CN107352370B - Protection device for preventing accidental movement of elevator car - Google Patents
Protection device for preventing accidental movement of elevator car Download PDFInfo
- Publication number
- CN107352370B CN107352370B CN201710640342.3A CN201710640342A CN107352370B CN 107352370 B CN107352370 B CN 107352370B CN 201710640342 A CN201710640342 A CN 201710640342A CN 107352370 B CN107352370 B CN 107352370B
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- Prior art keywords
- relay
- plate
- car
- travel switch
- door lock
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Classifications
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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
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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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Elevator Door Apparatuses (AREA)
Abstract
The invention discloses a protection device for preventing an elevator car from accidentally moving, which comprises a door lock switch, a stopping mechanism and a control device, wherein the door lock switch is arranged at the door frame position of the elevator car, and can act on the door lock switch to enable the door lock switch to act when the elevator car door is opened or closed; the stop mechanism comprises a stop plate arranged on the guide rail of the elevator and a stop plate which is rotatably arranged on the top of the elevator car and matched with the stop plate, the stop plate is provided with a first position and a second position, when the stop plate is positioned at the first position, the stop plate is separated from the stop plate to allow the elevator car to move, and when the stop plate rotates to the second position, the stop plate resists the stop plate to prevent the elevator car from moving; the control device is arranged on the car and is respectively connected with the door lock switch and the brake mechanism, and the control device generates a control signal according to the action of the door lock switch so as to control the brake plate to rotate between a first position and a second position. The car is prevented from accidentally moving when the door is opened by the blocking of the mechanical structure directly arranged on the car, so that the anti-interference performance is better, and the car has more effective braking protection effect.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to a protection device capable of preventing an elevator car from accidentally moving when a door is opened.
Background
When the elevator is used, the requirements of safety and reliability, high conveying efficiency, accurate leveling, comfortable riding and the like are required, but various elevator accidents, such as door closing and clamping of the elevator, unexpected movement of the elevator car, roof punching or squatting accidents of the elevator, and the like, are frequently caused in real life, so that potential safety hazards are brought, and a safety protection device is required to be installed for the elevator, so that the elevator car can be emergently stopped when accidents, such as unexpected movement, overspeed or door opening at a floor position and the like, occur; meanwhile, the related departments also take new measures and requirements for the corresponding standards of the elevator, and make related forced safety protection regulations for the conditions of unexpected movement of the car and the like.
The existing protection method for the accidental movement of the elevator car is to indirectly control the car to stop by controlling a braking device, for example, an elevator control system is used for controlling an elevator band brake or a traction steel wire rope to realize a braking protection function. Because the existing protection mode does not directly stop the elevator car, but stops the elevator car in an indirect mode, when a control system is interfered, a communication line is interfered and the like or a failure condition occurs in control, the protection device for the accidental movement of the elevator car can not effectively stop the elevator, so that potential safety hazards still exist in the elevator.
Therefore, there is a need to provide a protection device that can act directly on the car and effectively stop the car in the event of an unexpected movement of the car, in order to solve the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The invention aims to provide a protection device which can directly act on an elevator car and can effectively stop the elevator car when the elevator car accidentally moves.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the protection device for preventing the elevator car from accidentally moving comprises a door lock switch, a stopping mechanism and a control device; the door lock switch is arranged at the door frame position of the car, and can act on the door lock switch to enable the door lock switch to act when the car door is opened or closed; the stop-making mechanism comprises a stop-making plate and a stop-blocking plate, the stop-blocking plate is arranged on the elevator guide rail, the stop-making plate is rotatably arranged at the top of the elevator car and matched with the stop-blocking plate, the stop-making plate is provided with a first position and a second position, when the stop-making plate is positioned at the first position, the stop-making plate and the stop-blocking plate are released from blocking so as to allow the elevator car to move, and when the stop-making plate rotates to the second position, the stop-blocking plate resists the stop-making plate so as to prevent the elevator car from moving; the control device is arranged on the car and is respectively connected with the door lock switch and the stopping mechanism, and the control device generates a control signal according to the action of the door lock switch so as to control the stopping plate to rotate between the first position and the second position.
Preferably, the stopping mechanism further comprises a motor and a rotating shaft, two ends of the rotating shaft are respectively connected with the stopping plate and the output end of the motor, the motor is further connected with the control device, and the motor operates according to the control signal to drive the rotating shaft to rotate.
Preferably, the stopping mechanism further comprises a supporting seat fixed on the top of the car, and the rotating shaft rotatably penetrates through the supporting seat.
Preferably, the blocking plate is provided with a blocking groove, and when the stopping plate is positioned at the first position, the stopping plate can slidably pass through the blocking groove.
Preferably, the protection device for preventing the unexpected movement of the elevator car further comprises a first travel switch and a second travel switch which are arranged on the elevator car at intervals, the first travel switch and the second travel switch are respectively connected with the control device, the brake plate can act on the first travel switch when rotating to the first position, the brake plate can act on the second travel switch when rotating to the second position, and the control device stops the output of the control signal according to the actions of the first travel switch and the second travel switch.
Preferably, the stopping mechanism further comprises a first pressing plate and a second pressing plate connected with the stopping plate, the first pressing plate corresponds to the first travel switch, the second pressing plate corresponds to the second travel switch, and when the first pressing plate is pressed on the first travel switch or the second pressing plate is pressed on the second travel switch, the control device stops outputting the control signal.
Preferably, one end of the first travel switch is connected with a low level, the other end of the first travel switch is connected with a normally open contact of the door lock switch, one end of the second travel switch is connected with a low level, and the other end of the second travel switch is connected with a normally closed contact of the door lock switch.
Preferably, the control device comprises a first relay and a second relay, a normally open contact of the door lock switch is connected with a coil of the first relay to control the first relay coil to be conducted, and a normally closed contact of the door lock switch is connected with a coil of the second relay to control the second relay coil to be conducted.
Preferably, the control device further comprises a first input end, a second input end, a third input end, a first output end, a second output end and a third output end, wherein the first input end and the first output end are connected in series with the normally open contact of the first relay and the normally closed contact of the second relay, the first input end and the second output end are connected in series with the normally open contact of the second relay and the normally closed contact of the first relay, the second input end and the first output end are connected in series with the normally open contact of the second relay and the normally closed contact of the first relay, the second input end and the second output end are connected in series with the normally open contact of the first relay and the normally closed contact of the second relay, the third input end and the third output end are connected in parallel with the normally open contact of the first relay and the normally open contact of the second relay, and the first output end and the second output end are respectively connected with the third output end and the third output end.
Preferably, the stopping plate is in the first position when the car door is closed, and the stopping plate rotates to the second position when the car door is opened.
Compared with the prior art, the protection device for preventing the elevator car from moving accidentally is characterized in that the door frame of the elevator car is provided with the door lock switch, the top of the elevator car is provided with the rotatable stopping plate and the elevator guide rail is provided with the blocking plate, the stopping plate is matched with the blocking plate, the control device is arranged on the elevator car and is respectively connected with the door lock switch and the stopping mechanism, when the door is opened and closed and acts on the door lock switch to enable the door lock switch to act, the control device generates a control signal according to the action of the door lock switch, so that the stopping plate is controlled to rotate between a first position and a second position, when the door is closed, the stopping plate is in the first position, the stopping plate and the blocking plate are released from being blocked to enable the elevator car to move, and when the door is opened, the stopping plate rotates to the second position, and the blocking plate resists the stopping plate to prevent the elevator car from moving. According to the invention, the car is prevented from accidentally moving when the car is opened by the blocking of the mechanical structure directly arranged on the car, and the car can be effectively stopped even when the car accidentally moves, so that the car is prevented from moving a large distance in a door opening state.
Drawings
Fig. 1 is a schematic circuit diagram of a control device in a protective device of the invention for preventing accidental movement of an elevator car.
Fig. 2 is a schematic view of the structure of the stopping mechanism in the protection device for preventing the unexpected movement of the elevator car according to the present invention.
Fig. 3 is a schematic view of the installation position of a door lock switch in the protection device of the present invention for preventing accidental movement of an elevator car.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like reference numerals represent like elements throughout.
First, referring to fig. 1 to 3, the protection device for preventing an elevator car from moving accidentally provided by the present invention includes a door lock switch KM1, a control device 100, and a stopping mechanism 200. The door lock switch KM1 is provided at a door frame position of the car 300 (see fig. 3), and the door lock switch KM1 is operated when the car door 310 is opened or closed. The stopping mechanism 200 is disposed between the car 300 and the elevator guide rail, when the car door is opened, the stopping mechanism 200 will generate mechanical locking, thereby preventing the car from moving, and when the car door is closed, the stopping mechanism 200 automatically releases the locking, so that the car can normally run. The control device 100 is provided on the car 300 and is respectively connected with the door lock switch KM1 and the stopping mechanism 200, and the control device 100 generates a control signal according to the action of the door lock switch KM1 to control the stopping mechanism 200 to act so as to generate mechanical locking or release locking.
Referring now to fig. 1-2, a stop mechanism 200 includes a motor 210, a rotating shaft 220, a stop plate 230, and a detent plate 240. Wherein, the blocking plate 240 is arranged on the elevator guide rail, the rotating shaft 220 is rotatably arranged at the top of the car 300, and two ends of the rotating shaft 220 are respectively connected with the stopping plate 230 and the output end of the motor 210; the motor 210 is installed at the top of the car 300 and connected with the control device 100, and the control device 100 generates a control signal according to the action of the door lock switch KM1 to control the motor 210 to rotate, thereby driving the stopping plate 230 to rotate; the stopping plate 230 protrudes out of the car 300 to be connected with the blocking plate 240 in a matched manner; and, the stopping plate 230 has a first position and a second position, when the stopping plate 230 is at the first position, the stopping plate 230 and the blocking plate 240 are released from the blocking to allow the movement of the car 300, and when the stopping plate 230 rotates to the second position, the blocking plate 240 resists the stopping plate 230 to limit the continuous rotation thereof, thereby preventing the movement of the car 300.
With continued reference to fig. 1-2, the protection device for preventing the unexpected movement of the elevator car further includes a first travel switch SQ1 and a second travel switch SQ2, where the first travel switch SQ1 and the second travel switch SQ2 are disposed on the car 300 at intervals and are respectively connected to the control device 100, the stopping plate 230 can act on the first travel switch SQ1 when rotating to the first position, the stopping plate 230 can act on the second travel switch SQ2 when rotating to the second position, and the control device 100 stops the output of the control signal according to the actions of the first travel switch SQ1 and the second travel switch SQ 2.
As shown in fig. 2, the stopping mechanism 200 further includes a first pressing plate 250, a second pressing plate 260, and a supporting seat 270, the supporting seat 270 is mounted on the top of the car 300, the rotating shaft 220 rotatably passes through the supporting seat 270, the first pressing plate 250 and the second pressing plate 260 are respectively fixed on the rotating shaft 220 and form a certain angle, the first travel switch SQ1 is mounted at a position where the first pressing plate 250 can be pressed, the second travel switch SQ2 is mounted at a position where the second pressing plate 260 can be pressed, and when the first pressing plate 250 is pressed against the first travel switch SQ1 or the second pressing plate 260 is pressed against the second travel switch SQ2, the first travel switch SQ1 and the second travel switch SQ2 are respectively caused to operate, so that the control device 100 stops outputting the control signal.
In the present invention, the first pressing plate 250 and the second pressing plate 260 are installed at an included angle a of 90 °, and the included angle a between the two is not limited to this.
More specifically, the blocking plate 240 is provided with a blocking slot 241, when the stopping plate 230 is at the first position, the stopping plate 230 extends along the direction of the elevator guide rail, that is, when the stopping plate 230 is in a vertical state, so that the stopping plate 230 slidably passes through the blocking slot 241 to move the car 300, and the position shown in fig. 2 is a state when the stopping plate 230 is at the first position and slides through the blocking slot 241. In the present invention, when the stop plate 230 is in the first position, it is preferably perpendicular to the blocking plate 240, but the angle therebetween is not limited to this, as long as the stop plate 230 can slide through the blocking slot 241. Correspondingly, after the stopping plate 230 rotates a certain angle, the width of the clamping groove 241 is insufficient to allow the stopping plate 230 to pass, so that the stopping plate 230 will contact with the blocking plate 240, and the blocking effect of the blocking plate 240 on the stopping plate 230 will limit the stopping plate 230 to continue to rotate, so that the car 300 cannot move. Preferably, when the stop plate 230 is in the second position, the stop plate is substantially parallel to the blocking plate 240, and the width of the clamping groove 241 is insufficient to allow the stop plate 230 to slide through, which is not limited to the parallel relationship, as long as the stop plate 230 can contact the blocking plate 240.
In the present invention, when the car door 310 is closed, the control device 100 controls the stopping plate 230 to rotate to the first position, so that the car 300 can normally run, when the car door 310 is opened, the control device 100 controls the stopping plate 230 to rotate to the second position, so that the stopping plate 230 contacts with the blocking plate 240 to prevent the elevator from moving accidentally, and no matter how large the elevator is opened, the stopping plate 230 contacts with the blocking plate 240 all the time, and when the elevator moves accidentally, the elevator cannot run due to the mechanical blocking effect.
Referring now to fig. 1, the control device 100 includes a first relay K1 and a second relay K2, and the control device 100 has a connection point CL and a connection point OP. One end of the first travel switch SQ1 is connected with a low level, the other end of the first travel switch SQ1 is connected with a normally open contact KM1-1 of the door lock switch KM1, the normally open contact KM1-1 of the door lock switch KM1 is connected with a coil of the first relay K1 through a connection point CL to control the coil of the first relay K1 to be conducted, and the coil of the first relay K1 is also connected with 24V voltage. Correspondingly, one end of the second travel switch SQ2 is connected with a low level, the other end of the second travel switch SQ2 is connected with a normally closed contact KM1-2 of the door lock switch KM1, the normally closed contact KM1-2 is connected with a coil of the second relay K2 through a connection point OP to control the conduction of the coil of the second relay K2, and the coil of the second relay K2 is also connected with 24V voltage.
With continued reference to fig. 1, the control device 100 further includes a first input terminal L1, a second input terminal L2, a third input terminal L3, a first output terminal U, a second output terminal V, and a third output terminal W. The first input end L1 and the first output end U are connected in series with a normally open contact of the first relay K1 and a normally closed contact of the second relay K2, the first input end L1 and the second output end V are connected in series with a normally open contact of the second relay K2 and a normally closed contact of the first relay K1, the second input end L2 and the first output end U are connected in series with a normally open contact of the second relay K2 and a normally closed contact of the first relay K1, the second input end L2 and the second output end V are connected in series with a normally open contact of the first relay K1 and a normally closed contact of the second relay K2, the third input end L3 and the third output end W are connected in parallel with a normally open contact of the first relay K1 and a normally open contact of the second relay K2, and the first output end U, the second output end V and the third output end W are also respectively connected with the motor 210.
The operation principle and procedure of the protection device for preventing accidental movement of an elevator car according to the invention will be described below with reference to fig. 1-3.
As shown in fig. 1 and 3, when the elevator is in a door-closed state, a door lock switch KM1 installed at the door frame position of the car 300 is closed by pressing the car door 310, a normally open contact KM1-1 thereof is closed, a normally closed contact KM1-2 thereof is opened, and a first travel switch SQ1 is pressed by a first pressing plate 250, thereby being in an opened state, and at this time, a loop formed by a voltage of 0V, the first travel switch SQ1, the normally open contact KM1-1, a connection point CL, and voltages of the first relays K1, 24V in fig. 1 is opened, and the first relay K1 is not attracted; meanwhile, a loop formed by the voltage of 0V, the second travel switch SQ2, the normally-closed contacts KM1-2, the connecting point OP and the voltages of the second relay K2 and 24V is also disconnected, and the second relay K2 is not attracted.
Therefore, in the control device 100, the loop formed by the first input terminal L1, the normally open contact of the first relay K1, the normally closed contact of the second relay K2, and the first output terminal U is opened; the loop formed by the first input end L1, the normally open contact of the second relay K2, the normally closed contact of the first relay K1 and the second output end V is disconnected; the loop formed by the second input end L2, the normally open contact of the second relay K2, the normally closed contact of the first relay K1 and the first output end U is disconnected; the loop formed by the second input end L2, the normally open contact of the first relay K1, the normally closed contact of the second relay K2 and the second output end V is disconnected; the loop formed by the third input end L3, the normally open contact of the first relay K1 and the third output end W is disconnected; the loop formed by the third input end L3, the normally open contact of the second relay K2 and the third output end W is disconnected. The motor 210 is not powered and does not operate.
Referring to fig. 1-3, when the door 310 is opened in the flat position, the door 310 acts on the door lock switch KM1, thereby opening the normally open contact KM1-1 and closing the normally closed contact KM 1-2. At this time, the loop formed by the 0V voltage, the first travel switch SQ1, the normally open contact KM1-1, the connection point CL, the first relay K1, 24V voltage is still open, but the loop formed by the 0V voltage, the second travel switch SQ2, the normally closed contact KM1-2, the connection point OP, the second relay K2, 24V voltage is on.
Therefore, the second relay K2 in the control device 100 is attracted, so that the loop formed by the first input terminal L1, the normally open contact of the second relay K2, the normally closed contact of the first relay K1, and the second output terminal V is turned on, the loop formed by the second input terminal L2, the normally open contact of the second relay K2, the normally closed contact of the first relay K1, and the first output terminal U is turned on, and the loop formed by the third input terminal L3, the normally open contact of the second relay K2, and the third output terminal W is turned on.
At this time, the control device 100 outputs a control signal to the motor 210, so that the motor 210 drives the rotating shaft 220 to rotate in the direction B in fig. 2, after the second pressing plate 260 rotates 90 °, the second pressing plate 260 presses the second travel switch SQ2, so that the second travel switch SQ2 is turned off, and further, a loop formed by the 0V voltage, the second travel switch SQ2, the normally closed contacts KM1-2, the connection point OP, the second relay K2 and the 24V voltage is turned off, the second relay K2 is turned off, the corresponding loop in the control device 100 is turned off, the motor 210 is powered off to stop rotating, the stopping plate 230 in fig. 2 also rotates 90 ° to be in the second position, and the second position in this embodiment is the horizontal position of the stopping plate 230, so that the stopping plate 230 cannot pass through the locking groove 241 on the blocking plate 240, and thus contacts the blocking plate 240, so as to block the movement of the car 300.
As long as the elevator is in any door-opening state, no matter how large the elevator is in the door-opening state, even if the elevator accidentally moves, the elevator cannot operate due to the mutual blocking action between the blocking plate 240 and the stopping plate 230, so that the movement of the elevator in the door-opening state is effectively avoided.
With continued reference to fig. 1-3, in the above state, when the elevator is closed, the car door 310 acts on the door lock switch KM1, thereby closing its normally open contact KM1-1 and opening the normally closed contact KM 1-2. Accordingly, the loop formed by the 0V voltage, the first travel switch SQ1, the normally open contact KM1-1, the connection point CL, the first relay K1, 24V voltage is turned on, while the loop formed by the 0V voltage, the second travel switch SQ2, the normally closed contact KM1-2, the connection point OP, the second relay K2, 24V voltage is turned off.
At this time, the first relay K1 in the control device 100 is engaged, so that the loop formed by the first input terminal L1, the normally open contact of the first relay K1, the normally closed contact of the second relay K2, and the first output terminal U is turned on; correspondingly, the loop formed by the second input end L2, the normally open contact of the first relay K1, the normally closed contact of the second relay K2 and the second output end V is turned on, the loop formed by the third input end L3, the normally open contact of the first relay K1 and the third output end W is turned on, and the control device 100 outputs a control signal to the motor 210 again to make the motor 210 operate.
At this time, the motor 210 drives the rotation shaft 220 to rotate in the direction a of fig. 2, and when the first pressing plate 250 rotates 90 ° to return to the initial position, it will press the first travel switch SQ1, so that the first travel switch SQ1 is turned off, and thus, the loop formed by the voltage of 0V, the first travel switch SQ1, the normally open contact KM1-1, the connection point CL, the first relay K1, and the voltage of 24V is turned off, and the first relay K1 is turned off; thus, the corresponding circuit in the control device 100 is disconnected, and the control device 100 outputs no control signal, so that the motor 210 is powered off and stops rotating. At this time, the stopping plate 230 in fig. 2 is also reversely rotated by 90 ° to be in the first position again, that is, the stopping plate 230 is rotated from the horizontal position to the vertical position, and at this time, the stopping plate 230 can move and pass through the clamping groove 241 of the clamping plate 240, so that the elevator can normally operate.
In summary, since the protection device for preventing unexpected movement of an elevator car according to the present invention is provided with the door lock switch KM1 at the door frame position of the elevator car 300, the rotatable stop plate 230 is provided at the top of the elevator car 300, and the blocking plate 240 is provided on the elevator guide rail, the stop plate 230 is cooperatively connected with the blocking plate 240, the control device 100 is provided on the elevator car 300 and is respectively connected with the door lock switch KM1 and the stop mechanism 200, when the door 310 is opened and closed to act on the door lock switch KM1, the control device 100 generates a control signal according to the action of the door lock switch KM1, thereby controlling the stop plate 230 to rotate between the first position and the second position thereof, when the door 310 is closed, the stop plate 230 is in the first position and the blocking plate 240 is released from the blocking to allow the movement of the elevator car 300, and when the door 310 is opened, the stop plate 230 is rotated to the second position and the blocking plate 240 is blocked from the movement of the elevator car 300. According to the invention, the mechanical structure of the elevator 300 is directly arranged to prevent the elevator 300 from accidentally moving when the elevator is opened, even if the elevator 300 accidentally moves, the elevator can be effectively stopped, and the elevator 300 is ensured not to move by a large distance in the state of opening the door.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (6)
1. A protective device for preventing accidental movement of an elevator car, comprising:
a door lock switch provided at a door frame position of the car, the door lock switch being operable to operate when the car door is opened or closed;
the stopping mechanism comprises a stopping plate and a blocking plate, the blocking plate is arranged on an elevator guide rail, a blocking groove is formed in the blocking plate, the stopping plate is rotatably arranged at the top of the elevator car and matched with the blocking plate, the stopping plate is provided with a first position and a second position, when the stopping plate is positioned at the first position, the stopping plate can slidably pass through the blocking groove, the stopping plate and the blocking plate are released from blocking to allow the elevator car to move, and when the stopping plate rotates to the second position, the blocking plate resists the stopping plate to prevent the elevator car from moving;
the control device is arranged on the car and is respectively connected with the door lock switch and the stopping mechanism, and the control device generates a control signal according to the action of the door lock switch so as to control the stopping plate to rotate between the first position and the second position; the control device comprises a first relay and a second relay;
the first travel switch and the second travel switch are arranged on the car at intervals, one end of the first travel switch is connected with a low level, the other end of the first travel switch is connected with a normally open contact of the door lock switch, and the normally open contact of the door lock switch is connected with a coil of the first relay to control the first relay coil to be conducted;
one end of the second travel switch is connected with a low level, the other end of the second travel switch is connected with a normally-closed contact of the door lock switch, and the normally-closed contact of the door lock switch is connected with a coil of the second relay to control the conduction of the coil of the second relay;
the control device is characterized in that the stop plate can act on the first travel switch when rotating to the first position, the stop plate can act on the second travel switch when rotating to the second position, and the control device stops the output of the control signal according to the actions of the first travel switch and the second travel switch.
2. The apparatus according to claim 1, wherein the stopping mechanism further comprises a motor and a rotating shaft, both ends of the rotating shaft are respectively connected to the stopping plate and the output end of the motor, and the motor is further connected to the control device, and the motor is operated according to the control signal to drive the rotating shaft to rotate.
3. The apparatus according to claim 2, wherein the stopping mechanism further comprises a support base fixed to a top of the car, and the rotating shaft rotatably penetrates the support base.
4. The apparatus according to claim 1, wherein the stopping mechanism further comprises a first pressing plate and a second pressing plate connected to the stopping plate, the first pressing plate corresponds to the first travel switch, the second pressing plate corresponds to the second travel switch, and the control apparatus stops the output of the control signal when the first pressing plate presses against the first travel switch or the second pressing plate presses against the second travel switch.
5. The apparatus of claim 1, wherein the control device further comprises a first input terminal, a second input terminal, a third input terminal, a first output terminal, a second output terminal, and a third output terminal, wherein a normally open contact of the first relay and a normally closed contact of the second relay are connected in series between the first input terminal and the first output terminal, a normally open contact of the second relay and a normally closed contact of the first relay are connected in series between the first input terminal and the second output terminal, the second input end and the first output end are connected in series with a normally open contact of the second relay and a normally closed contact of the first relay, the second input end and the second output end are connected in series with a normally open contact of the first relay and a normally closed contact of the second relay, the third input end and the third output end are connected in parallel with a normally open contact of the first relay and a normally open contact of the second relay, and the first output end, the second output end and the third output end are respectively connected to the stopping mechanism.
6. The protective device of claim 1, wherein the stop plate is in the first position when the door is closed and rotates to the second position when the door is open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640342.3A CN107352370B (en) | 2017-07-31 | 2017-07-31 | Protection device for preventing accidental movement of elevator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640342.3A CN107352370B (en) | 2017-07-31 | 2017-07-31 | Protection device for preventing accidental movement of elevator car |
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| Publication Number | Publication Date |
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| CN107352370A CN107352370A (en) | 2017-11-17 |
| CN107352370B true CN107352370B (en) | 2023-09-05 |
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|---|---|---|---|
| CN201710640342.3A Active CN107352370B (en) | 2017-07-31 | 2017-07-31 | Protection device for preventing accidental movement of elevator car |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106744134A (en) * | 2017-03-28 | 2017-05-31 | 广东铃木电梯有限公司 | A kind of non-stop formula car accidental movement protected mode, device and its driving method |
| CN207312901U (en) * | 2017-07-31 | 2018-05-04 | 快意电梯股份有限公司 | Prevent the protective device of accidental movement of elevator cage |
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| JP2009012963A (en) * | 2007-07-09 | 2009-01-22 | Mitsubishi Electric Corp | Safety device of elevator |
| CN103466407A (en) * | 2013-09-29 | 2013-12-25 | 快意电梯股份有限公司 | Unintended car movement protection device and protection method |
| CN104071667A (en) * | 2014-05-07 | 2014-10-01 | 杭州奥立达电梯有限公司 | Car accidental movement prevention protecting system |
| CN104944242A (en) * | 2015-07-10 | 2015-09-30 | 张黎明 | Safety device for preventing accidental movement of lift car in door opening state |
| CN105502120A (en) * | 2016-01-18 | 2016-04-20 | 上海三意自动化控制工程有限公司 | Lift car door-opening accidental moving protecting device |
| CN105692409A (en) * | 2016-04-25 | 2016-06-22 | 凯斯博电梯有限公司 | Elevator capable of automatically locking car during opening of car |
| CN106744134A (en) * | 2017-03-28 | 2017-05-31 | 广东铃木电梯有限公司 | A kind of non-stop formula car accidental movement protected mode, device and its driving method |
| CN207312901U (en) * | 2017-07-31 | 2018-05-04 | 快意电梯股份有限公司 | Prevent the protective device of accidental movement of elevator cage |
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| CN107352370A (en) | 2017-11-17 |
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