CN106966248B - Device and method for protecting car from accidental movement - Google Patents
Device and method for protecting car from accidental movement Download PDFInfo
- Publication number
- CN106966248B CN106966248B CN201710277201.XA CN201710277201A CN106966248B CN 106966248 B CN106966248 B CN 106966248B CN 201710277201 A CN201710277201 A CN 201710277201A CN 106966248 B CN106966248 B CN 106966248B
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- Prior art keywords
- car
- signal
- permanent magnet
- magnet synchronous
- accidental movement
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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
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
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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
- B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
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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 a car accidental movement monitoring device which is used for monitoring the accidental movement of a car after an elevator door is opened in place and comprises an operation control device and a power system, wherein the operation control device controls the power system to act through command movement, the power system drives the car to operate, the power system comprises a permanent magnet synchronous gearless tractor with a rotary encoder, the rotary encoder obtains an encoder signal of the rotation of the permanent magnet synchronous gearless tractor, the operation control device obtains the encoder signal, judges whether the car moves according to the encoder signal after the car is in a flat floor position and the elevator door is opened in place, and generates an accidental movement signal if the car moves in place. The invention also discloses a car accidental movement protection device, which controls the brake of the permanent magnet synchronous gearless traction machine to act according to an accidental movement signal so as to brake the car, and the car is braked in time when the car moves accidentally. The invention also discloses a method for monitoring the accidental movement of the lift car and a method for protecting the accidental movement of the lift car.
Description
Technical Field
The present invention relates to the field of elevator control, and more particularly to protection against accidental movement of a car.
Background
The accidental movement of the car of the elevator means that the car of the elevator is operated with the door open. Along with the requirements of people on the safety of the elevator, the requirements of people on the detection and protection device for the accidental movement of the elevator car are higher and higher. Therefore, a device and a method for monitoring accidental movement of the car and a device and a method for protecting the car are urgently needed.
Disclosure of Invention
The invention aims to provide a device and a method for monitoring accidental movement of a car, which can monitor the accidental movement of the car after an elevator door is opened in place.
Another object of the present invention is to provide an accidental car movement protection device and method, which can monitor the accidental car movement after the elevator door is opened in place and stop the car in time when the car is moved accidentally.
In order to achieve the purpose, the invention discloses a car accidental movement monitoring device which is used for monitoring the accidental movement of a car in an elevator and comprises an operation control device and a power system, wherein the operation control device is connected with the power system and sends a control command to the power system so as to control a permanent magnet synchronous gearless tractor of the power system to rotate, the power system drives the car to operate, the power system comprises a permanent magnet synchronous gearless tractor which drives the car to move, the permanent magnet synchronous gearless tractor is provided with a rotary encoder, the rotary encoder obtains an encoder signal according to the rotation of the permanent magnet synchronous gearless tractor, the operation control device obtains the encoder signal and judges whether the car moves or not according to the encoder signal after the car is in a flat floor position and an elevator door is opened in place, if so, an unintended movement signal is generated.
Compared with the prior art, the signal of the rotary encoder of the permanent magnet synchronous gearless traction machine is used as the detection signal of the accidental movement of the lift car, the accidental movement of the lift car after the door of the lift is opened in place can be monitored, and the detection result is accurate.
Preferably, the power system comprises a frequency converter and the permanent magnet synchronous gearless traction machine, the operation control device is communicated with the frequency converter to acquire the motion state of the car and transmit a control command, and the frequency converter controls the permanent magnet synchronous gearless traction machine to rotate according to the control command.
Preferably, the operation control device comprises a controller connected with the power system, an upper leveling switch for generating an upper leveling signal, a lower leveling switch for generating a lower leveling signal, a door opening in-place switch for generating a door opening in-place signal, a hall door lock switch for detecting a hall door lock state, and a car door lock switch for detecting a car door lock state, wherein the controller is provided with a first interface for receiving the upper leveling signal, a second interface for receiving the lower leveling signal, a third interface connected with the hall door lock switch, a fourth interface connected with the car door lock switch, a fifth interface for receiving the door closing in-place signal, and a communication interface for receiving the encoder information, the controller judges whether the car is in a leveling position according to the upper leveling signal and the lower leveling signal, and judges whether the elevator door is in place or not according to the hall door lock signal, the car door lock signal, and the door opening in-place signal, the controller judges whether the car moves according to the encoder signal after the car is in a flat-layer position and the elevator is opened in place, and if so, an accidental movement signal is generated.
Preferably, the method for determining whether the car moves according to the encoder signal comprises: and judging whether the position pulse signal and the angle pulse signal in the encoder information change or not, and if so, judging that the car moves.
The invention also discloses a car accidental movement protection device which is used for preventing the car in the elevator from accidental movement and comprises the car accidental movement monitoring device, wherein the operation control device controls the brake of the permanent magnet synchronous gearless traction machine to act according to the accidental movement signal so as to stop the car.
Compared with the prior art, the invention can monitor the accidental movement of the lift car after the lift door is opened in place by taking the signal of the rotary encoder of the permanent magnet synchronous gearless traction machine as the detection signal of the accidental movement of the lift car, has accurate detection result and can stop the lift car in time when the lift car moves accidentally.
Preferably, the operation control device controls the brake of the permanent magnet synchronous gearless traction machine to act so as to stop the car, determines the rotation direction of the permanent magnet synchronous gearless traction machine, and transmits a reverse torque current opposite to the rotation direction of the permanent magnet synchronous gearless traction machine to the permanent magnet synchronous gearless traction machine. The scheme achieves the purpose of braking the car through the brake and the reverse torque current of the permanent magnet synchronous gearless traction machine, has strong protection capability and improves the braking speed.
The invention also comprises a method for monitoring the accidental movement of the lift car in the elevator, wherein a permanent magnet synchronous gearless traction machine is used as a power source to drive the lift car to run, the permanent magnet synchronous gearless traction machine is provided with a rotary encoder, and the rotary encoder acquires an encoder signal according to the rotation of the permanent magnet synchronous gearless traction machine; the method for monitoring the accidental movement of the car comprises the following steps: and judging whether the elevator car is in a flat floor position, if so, judging whether the elevator door is opened in place, if so, judging whether the elevator car moves according to the encoder signal, and if so, generating an accidental movement signal.
Compared with the prior art, the signal of the rotary encoder of the permanent magnet synchronous gearless traction machine is used as the detection signal of the accidental movement of the lift car, the accidental movement of the lift car after the door of the lift is opened in place can be monitored, and the detection result is accurate.
Preferably, the method for judging whether the car moves according to the encoder signal comprises the following steps: and judging whether the position pulse signal and the angle pulse signal in the encoder information change or not, and if the position pulse signal and/or the angle pulse signal in the encoder information change, judging that the car moves.
The invention also discloses a car accidental movement protection method, which is used for preventing the car in the elevator from accidental movement, and comprises the following steps: (1) the method comprises the following steps of monitoring the accidental movement of the car; (2) and controlling the brake of the permanent magnet synchronous gearless traction machine to act according to the unexpected movement information so as to stop the elevator car.
Compared with the prior art, the invention can monitor the accidental movement of the lift car after the lift door is opened in place by taking the signal of the rotary encoder of the permanent magnet synchronous gearless traction machine as the detection signal of the accidental movement of the lift car, has accurate detection result and can stop the lift car in time when the lift car moves accidentally.
Preferably, step (1) is followed by step (3): and judging the rotation direction of the permanent magnet synchronous gearless tractor, and transmitting reverse torque current opposite to the rotation direction of the permanent magnet synchronous gearless tractor to the permanent magnet synchronous gearless tractor. The scheme achieves the purpose of braking the car through the brake and the reverse torque current of the permanent magnet synchronous gearless tractor, has strong protection capability and improves the braking speed.
Drawings
Fig. 1 is a block diagram showing a part of an accidental car movement protection device according to the present invention.
Fig. 2 is a block diagram of another part of the protection device for preventing the car from moving accidentally.
Fig. 3 is a flow chart of the method for protecting against accidental car movement according to the invention.
Detailed Description
In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1, the invention discloses a car accidental movement protection device 100 for preventing a car from accidental movement in an elevator, comprising an operation control device 20 and a power system 10, wherein the operation control device 20 is connected with the power system 10 and sends a control command to the power system 10 to control the power system 10 to rotate, the power system 10 drives the car 30 to operate, the power system 10 comprises a permanent magnet synchronous gearless traction machine 11 for driving the car 30 to move, the permanent magnet synchronous gearless traction machine 11 is provided with a rotary encoder 111, the rotary encoder 111 acquires an encoder signal according to the rotation of the permanent magnet synchronous gearless traction machine 11, the operation control device 20 acquires the encoder signal and judges whether the car 30 moves according to the encoder signal after the car 30 is in a flat position and the elevator is in place and opens the door, if so, an unintended movement signal is generated. Referring to fig. 2, the operation control device 20 controls the brake 112 of the permanent magnet synchronous gearless traction machine 11 to stop the car 30 according to the unexpected movement signal. Wherein, the other side of car 30 is connected with the counter weight through wire rope to the safety of protection car 30.
The method for judging whether the car 30 moves according to the encoder signal comprises the following steps: and judging whether the position pulse signal and the angle pulse signal in the encoder information change or not, and if the position pulse signal and/or the angle pulse signal in the encoder information change, judging that the car 30 moves.
With continued reference to fig. 1, the operation control device 20 includes a controller 21 connected to the power system 10, an upper leveling switch YPS for generating an upper leveling signal, a lower leveling switch YPX for generating a lower leveling signal, a door open-to-place switch AKM for generating a door open-to-place signal, a hall lock switch JMS1 for detecting the state of the hall lock, a JMS2 (1 hall lock switch for each hall door of the elevator, all hall lock switches being connected in series, only two hall lock switches JMS1 and JMS2 are listed in the present embodiment, but the present invention is not limited to the number of hall lock switches, which may be one or more than two), and a car lock switch JMSN for detecting the state of the hall lock, and the controller is provided with a first interface X1 for receiving the upper leveling signal, a second interface X2 for receiving the lower leveling signal, and a third interface CX2 connected to the hall lock switches JMS1 and JMS2, With fourth interface CX1, the receipt that sedan-chair door lock switch JMSN links to each other close the door and put in place the fifth interface X3 of signal and receive the communication interface C2 of encoder information, controller 21 foundation go up flat bed signal and lower flat bed signal judgement whether the car is in the flat bed position, the foundation the hall door lock signal, sedan-chair door lock signal and the signal judgement that puts in place that opens the door the elevator is opened the door and is put in place, controller 21 is in the car is in the flat bed position and the elevator opens the door and puts in place the back foundation the encoder signal is judged whether the car removes, if then generates unexpected removal signal. Of course, the operation control device 20 further includes a door-closing-in-place switch BGM for generating a door-closing-in-place signal. In this embodiment, the controller 21 generates the in-place state for determining that the elevator is in the leveling position and the elevator door is in the in-place position according to the on states of the door opening in-place switch AKM, the upper leveling switch YPS, the lower leveling switch YPX, the hall door lock switch JMS1, the JMS2, and the car door lock switch JMSN, for example, when the door opening in-place switch AKM is in the normally open state, the landing door lock signal and the car door lock signal generated by the hall door lock switches JMS1, JMS2, and the car door lock switch JMSN are in the normally open state, and when the upper leveling switch YPS and the lower leveling switch YPX are in the normally closed state, it is determined that the elevator door is in the in-place position, and at this time, when the position pulse signal and the angle pulse signal in the encoder signal change, an unexpected movement signal is generated.
Referring to fig. 1, the power system 10 includes a frequency converter 12 and the permanent magnet synchronous gearless machine 11, the operation control device 20 communicates with the frequency converter 12 to acquire a motion state of the car 30 and transmit a control command, and the frequency converter 12 controls the permanent magnet synchronous gearless machine 11 to rotate according to the control command.
Preferably, referring to fig. 2, the operation control device 20 controls the operation of the brake 112 of the permanent magnet synchronous gearless hoisting machine 11 to stop the car, determines the rotation direction of the permanent magnet synchronous gearless hoisting machine 11, and transmits a reverse torque current to the permanent magnet synchronous gearless hoisting machine 11 in a direction opposite to the operation direction. The controller 21 is further provided with an interface M1 and an interface Y1, a coil of a band-type brake contactor K1 is connected between the interface M1 and the interface Y1, and a normally open contact of the band-type brake contactor K1 is connected to a power supply line of the brake 113. When the controller detects an unexpected movement signal, the controller 21 gives an instruction to the frequency converter 12, and the frequency converter 12 supplies a reverse torque current opposite to the rotation direction thereof to the permanent magnet synchronous gearless traction machine 11 so that the permanent magnet synchronous gearless traction machine 11 can overcome the force of moving in the original direction, for example, when it is found that the car 30 unexpectedly moves upward, the frequency converter 12 supplies a reverse torque current opposite to the downward direction to the permanent magnet synchronous gearless traction machine 11 so that the permanent magnet synchronous gearless traction machine 11 overcomes the upward movement. And simultaneously, the control interfaces M1 and Y1 are disconnected, so that the coil of the brake contactor K1 is powered off, the normally open contact of the brake contactor K1 is disconnected to power off the brake 113, and the brake 113 acts to brake the car 30.
Referring to fig. 3, the invention discloses a car accidental movement protection method 400, a permanent magnet synchronous gearless traction machine 11 is used as a power source to drive a car 30 to run, the permanent magnet synchronous gearless traction machine 11 is provided with a rotary encoder 111, and the rotary encoder 111 acquires an encoder signal according to the rotation of the permanent magnet synchronous gearless traction machine 11; the car accidental movement protection method 400 includes the steps of: (41) and judging whether the elevator car is at a flat-layer position, if so, judging (42) whether the elevator door is opened in place, if so, judging (43) whether the elevator car moves according to the encoder signal, and if so, generating (44) an accidental movement signal. (45) And controlling the brake to act according to the unexpected movement signal so as to brake the car.
Preferably, the step (44) is followed by a step (46): and judging the rotation direction of the permanent magnet synchronous gearless tractor, and transmitting a reverse torque current opposite to the action direction of the permanent magnet synchronous gearless tractor to the permanent magnet synchronous gearless tractor.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (6)
1. A car accidental movement protection device is used for preventing the car accidental movement in an elevator, and is characterized in that: comprises a cage accidental movement monitoring device used for monitoring the accidental movement of a cage in an elevator, comprises an operation control device and a power system, the operation control device is connected with the power system and sends a control command to the power system to control the action of the power system, the power system drives the lift car to run, the power system comprises a permanent magnet synchronous gearless traction machine which drives the lift car to move, the permanent magnet synchronous gearless tractor is provided with a rotary encoder, the rotary encoder acquires an encoder signal according to the rotation of the permanent magnet synchronous gearless tractor, the operation control device acquires the encoder signal, judging whether the lift car moves or not according to the encoder signal after the lift car is at the flat-layer position and the lift door is opened in place, and if so, generating an accidental movement signal;
the operation control device controls the brake of the permanent magnet synchronous gearless traction machine to act according to the unexpected movement signal, simultaneously judges the rotation direction of the permanent magnet synchronous gearless traction machine, and transmits reverse torque current opposite to the rotation direction of the permanent magnet synchronous gearless traction machine to the permanent magnet synchronous gearless traction machine so as to stop the lift car.
2. The protection device for accidental movement of a car according to claim 1, wherein: the power system comprises a frequency converter and the permanent magnet synchronous gearless traction machine, the operation control device is communicated with the frequency converter to acquire the motion state of the lift car and transmit a control command, and the frequency converter controls the permanent magnet synchronous gearless traction machine to rotate according to the control command.
3. The accidental car movement protection device of claim 1, wherein: the operation control device comprises a controller connected with the power system, an upper leveling switch generating an upper leveling signal, a lower leveling switch generating a lower leveling signal, a door opening in-place switch generating a door opening in-place signal, a hoistway door lock switch detecting the state of a hoistway door lock and a car door lock switch detecting the state of a car door lock, wherein the controller is provided with a first interface for receiving the upper leveling signal, a second interface for receiving the lower leveling signal, a third interface connected with the hoistway door lock switch, a fourth interface connected with the car door lock switch, a fifth interface for receiving the door closing in-place signal and a communication interface for receiving the encoder signal, the controller judges whether the car is in a leveling position or not according to the upper leveling signal and the lower leveling signal, and judges whether the elevator door is in-place or not according to the hall door lock signal, the car door lock signal and the door opening in-place signal, the controller judges whether the car moves according to the encoder signal after the car is in a flat-layer position and the elevator is opened in place, and if so, an accidental movement signal is generated.
4. The accidental car movement protection device of claim 1, wherein: the method for judging whether the elevator car moves according to the encoder signal comprises the following steps: and judging whether the position pulse signal and the angle pulse signal in the encoder signal change or not, and if the position pulse signal and/or the angle pulse signal in the encoder signal change, judging that the car moves.
5. A protection method for preventing accidental movement of a car in an elevator is characterized in that:
(1) comprising a method for monitoring the accidental movement of a car in an elevator, comprising: the method for monitoring the accidental movement of the lift car comprises the following steps of:
the permanent magnet synchronous gearless tractor is provided with a rotary encoder, and the rotary encoder acquires an encoder signal according to the rotation of the permanent magnet synchronous gearless tractor;
judging whether the lift car is in a flat floor position or not, judging whether the elevator is in place when the door is opened, judging whether the lift car moves or not according to the encoder signal if the elevator is in place, and generating an accidental movement signal if the elevator is in place;
(2) and judging the rotation direction of the permanent magnet synchronous gearless tractor while controlling the brake of the permanent magnet synchronous gearless tractor to act according to the accidental movement information, and transmitting reverse torque current opposite to the rotation direction of the permanent magnet synchronous gearless tractor to stop the lift car.
6. The method of claim 5 for protecting against accidental movement of a car, wherein: the method for judging whether the elevator car moves according to the encoder signal comprises the following steps: and judging whether the position pulse signal and the angle pulse signal in the encoder signal change or not, and if the position pulse signal and/or the angle pulse signal in the encoder signal change, judging that the car moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277201.XA CN106966248B (en) | 2017-04-25 | 2017-04-25 | Device and method for protecting car from accidental movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710277201.XA CN106966248B (en) | 2017-04-25 | 2017-04-25 | Device and method for protecting car from accidental movement |
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| CN106966248A CN106966248A (en) | 2017-07-21 |
| CN106966248B true CN106966248B (en) | 2022-09-02 |
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| CN201710277201.XA Active CN106966248B (en) | 2017-04-25 | 2017-04-25 | Device and method for protecting car from accidental movement |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110127486A (en) * | 2018-02-02 | 2019-08-16 | 蒂森克虏伯电梯（上海）有限公司 | A kind of accidental movement of elevator cage guard method and protection system |
| CN109626172A (en) * | 2018-11-09 | 2019-04-16 | 日立电梯（中国）有限公司 | Elevator control method, elevator and computer readable storage medium |
| CN110271930A (en) * | 2019-06-25 | 2019-09-24 | 快意电梯股份有限公司 | Elevator car slipping rescues automatic detection device and detection method |
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| JP5523455B2 (en) * | 2009-06-23 | 2014-06-18 | 三菱電機株式会社 | Elevator equipment |
| JP2012180132A (en) * | 2009-06-29 | 2012-09-20 | Mitsubishi Electric Corp | Elevator equipment |
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| JP5941013B2 (en) * | 2013-04-23 | 2016-06-29 | 株式会社日立ビルシステム | Elevator abnormality diagnosis device |
| CN103964272B (en) * | 2014-01-11 | 2018-10-30 | 广东日创电梯有限公司 | Prevent accidental movement of elevator cage or protection system out of control |
| CN105236223B (en) * | 2015-09-23 | 2018-01-02 | 日立电梯（中国）有限公司 | inertia measuring system and method |
| CN105480805B (en) * | 2015-11-24 | 2018-02-06 | 广东亚太西奥电梯有限公司 | The method that elevator accidental movement can be prevented |
| CN205328403U (en) * | 2016-01-12 | 2016-06-22 | 广州广日电梯工业有限公司 | Device for preventing accidental movement of elevator cage |
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| WO2010095243A1 (en) * | 2009-02-20 | 2010-08-26 | 三菱電機株式会社 | Brake device for elevator |
| CN102714483A (en) * | 2010-01-21 | 2012-10-03 | 三菱电机株式会社 | Rescue operation device of elevator |
| WO2012162853A1 (en) * | 2011-05-27 | 2012-12-06 | Otis Elevator Company | Sheave monitor |
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