0001]The present invention relates to elevator systems for implementing an open operation of the brake.
BACKGROUND
[0002]Conventional elevator rotates the motor from the power converter, via a sheave that is connected to the electric motor, by moving the rope in the vertical direction, thereby enabling the lifting of the car that are connected to the ropes. The power converter and an electric motor, if such an encoder connected with the motor, a part of the drive system fails, the elevator stops. Car stop position of the elevator is between floors and floors, the passenger when the confinement occurs and are within the car. Since the confined state car does not move, but the safety of the passengers is ensured, the passenger is subject discomfort.
[0003]
　As a method to rescue passengers trapped by the failure of such a drive system is generally performed by service personnel. In particular, when the weight of the car is not balanced with the counterweight, by opening the brake manually, using the imbalance between the counterweight, the passengers by moving the car to the nearest floor rescue you. Also, other as rescue method is not a nearest floor, and a method to rescue passengers to move the car to rescue port provided in a hoistway to rescue passengers, has stopped normal adjacent No. machine and association next to the car, and the like rescue method moves to normal adjacent Unit side through the escape port provided passengers who are in the car that stopped the car.
[0004]
　On the other hand, for the above-described method is to be carried out from waiting for the arrival of the maintenance personnel, the waiting time is generated in the rescue of passengers. As a method for solving this, by using a dedicated terminal for releasing the brake in an automatic, a method to rescue early is disclosed (see Patent Document 1).
CITATION
Patent Document
[0005]
Patent Document 1: International Publication No. WO 2010/058453
Summary of the Invention
Problems that the Invention is to Solve
[0006]
　However, with the technique disclosed in Patent Document 1, the brake by connecting the brake control device for performing rescue operations independently of the elevator operation control device, supplies power to the brake from the brake controller open, is moved the car. Therefore, to perform rescue operations, first operation of connecting the brake control device is required, time required for rescue work are increased. In a general rescue work methods, the maintenance worker move the car by manipulating the brake directly, by or turning the manual winding handle connected to the sheave of the hoisting machine, to move the car While it is carried out, such as, any of the maintenance personnel work is because it is not possible to start the rescue work to be moved to the site of the elevator, it takes time to similarly rescue work to increase.
[0007]
　An object of the present invention, upon opening operation of the brake, after stopping the movement of the car, is to provide a lift system that can be opened automatically operate the brake.
Means for Solving the Problems
[0008]
　To solve the above problems, the present invention controls the car, and the sheave which is wound around the rope connecting the counterweight and the car, a motor for adding a rotational force to the sheave, the rotation of the motor a power converter, the elevator comprising a brake for implementing the opening operation for opening the braking force applied to the braking operation or the sheave applying a braking force to the sheave, the first power supply path connecting the power source and the power converter and a power switch for opening and closing, brake the brake is implemented the opening operation, thereby performing the braking operation to the brake when the supply of power is cut off from the power supply when receiving the power supply from said power supply a circuit, a first contact point for opening and closing the second power supply path connecting said power source and said brake circuit, is connected in parallel to said first contact, said second A second contact point for opening and closing the source path, and a first control circuit for controlling the opening and closing of the power switch, and a second control circuit for controlling the opening and closing of said first contact, said second contact a third control circuit for controlling the opening and closing, controls the operation of the power converter, controller for managing the said the first control circuit a second control circuit and the third control circuit as the control object When, wherein the controller, at the time of opening operation of the brake, the issuing the opening operation of the power supply switch to the first control circuit to cut off supply of the power to the power converter the second instructs the opening operation of the first contact to the control circuit, cut off the power supply to the brake circuit, then the second contact to the third control circuit closing operation and instruction of, or the power supply And the power to bypass the first contact point, and supplying said brake circuit.
Effect of the invention
[0009]
　According to the present invention, upon opening operation of the brake, after stopping the movement of the car can be opened automatically operate the brake.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010]
It is an overall configuration diagram of the elevator system according to an embodiment of FIG. 1 the present invention.
Is a configuration diagram of FIG. 2 the power control circuit.
3 is a block diagram for explaining the processing contents of the controller.
Is a flow chart for explaining FIG. 4 the operation of the controller.
DESCRIPTION OF THE INVENTION
[0011]
　Hereinafter, with reference to the accompanying drawings, it will be described in detail an embodiment of the present invention.
Example
[0012]
　Figure 1 is an overall configuration diagram of the elevator system according to an embodiment of the present invention. In Figure 1, the elevator system is a system to which electric power is supplied via a circuit breaker 2 from an external power source 1, a contactor 3, and the power converter 4, a controller 5, a power control circuit 6, the winding the upper machine 7, the car (car) 8, a speed governor 9, a transformer 10, a first contact 11, a second contact 12, a power conversion circuit 13, and the contactor 14, the brake coil 15 When a brake 16 is configured to include a rope 17 or the like, the primary side of the contactor 3 and the transformer 10 are connected to each circuit breaker 2.
[0013]
　Circuit breaker 2 is a switch provided on the control panel to switch the supply of the external power source 1 manually. Contactor 3 is a power switch for opening and closing the first supply path connecting the external power supply 1 and the power converter 4, a switching device for supplying electric power to the power converter 4, the controller 5 and It is controlled by the power control circuit 6. Power converter 4 is a power converter for supplying power to the hoisting machine 7, for example, an inverter, the output power is controlled by the speed command from the controller 5. Controller 5 outputs the speed command to control the operation of the car 8 in the power converter 4, the contactor 3, the first contact 11, second power supply control circuit command for controlling the contact point 12 of the and outputs it to the 6. Power control circuit 6, the contactor 3 on the basis of the command from the controller 5, the first contact 11, and controls the second contact 12. Hoist 7 is a drive device for vertically moving the car 8, a brake drum, a motor for the hoisting motor connected to one end of the rotating shaft of the brake drum, the other end of the rotating shaft of the brake drum have linked sieve (both not shown), a rope (main rope) 17 is wound around the sheave, one end of the rope 17 is connected to the car 8, the other end a counterweight (Figure rope 17 It is connected to the Shimese not). At this time, the motor hoisting machine is configured as a motor for adding a rotational force to the sheave, the power converter 4 is constructed as a power converter for controlling the rotation of the motor. Speed ​​governor 9 is a safety device for detecting the speed of the car 8 via a pulley 18 and the slave rope 19, when the speed of the car 8 is equal to or higher than a predetermined speed, in the safety circuit belonging to the power control circuit 6 blocking the electrical signals, power supply and (composed of power delivered from the circuit breaker 2 in the contactor 3 side power source) and the brake power source (power source consists of power delivered from the circuit breaker 2 in the transformer 10 side) by blocking, to brake the car 8.
[0014]
　The first contact 11, the contact which controls to supply the power to the brake circuit including a contactor 14 and the brake coil 15 (first contact for opening and closing the second power supply path connecting the external power supply 1 and the brake circuit) it is. By the first contact 11 is turned on, electric power is supplied to the brake circuit, the brake 16 is actuated by the excitation of the brake coil 15. When the brake 16 is actuated, the brake 16 away from the brake drum, stop of the car 8 is released. At this time, the first contact 11 is controlled from the power control circuit 6 and the controller 5 includes a safety circuit. The second contact 12, the contact to control that the first contact 11 independently supplies power to the brake circuit (connected in parallel to the first contact 11, second opening and closing the second power supply path second contact). The second contact 12 is connected in parallel with the first contact point 11, it is controlled from the power control circuit 6 and the controller 5 includes a safety circuit.
[0015]
　Power conversion circuit 13 is, for example, a diode is a bridge circuit which is constituted by a, converts the AC voltage by the output of the transformer 10 into a DC voltage, to apply a desired voltage to the brake circuit. Contactor 14 is a contactor in the brake circuit, when performing braking by the brake 16, is a device that is turned is released. Contactor 14 is controlled from the power control circuit 6 and the controller 5 includes a safety circuit. Brake coil 15 is a circuit device for controlling the brake 16 by the electromagnetic force. The power applied to the normal brake coil 15, the brake 16 is pulled, the hoisting machine 7 becomes ready rotation, whereas, by the power cutoff to the brake coil 15, the brake 16 is lowered, the hoisting machine 7 is restrained the state. At this time, the brake 16 will implement the opening operation for opening the braking force applied to the braking action or sheave applying a braking force to the sheave. The brake circuit including a contactor 14 and the brake coil 15, when receiving the power supply from the power source (external power source 1), was carried out an opening operation to the brake 16, when the supply of power is cut off from the power supply , so that it perform braking operation to the brake 16.
[0016]
　Figure 2 is a block diagram of a power supply control circuit. 2, the power supply control circuit 6 is a circuit for controlling the contactor 3 and the first contact 11 and second contact 12, a safety circuit 20, a circuit 21, 23 and 25, buffer circuits 22 and 24 , is composed of 26, circuit 21, 23, 25 and the buffer circuit 22, 24 and 26, so the safety circuit 20 in series, is inserted into the feed circuit DC power source (+ B) and connecting the ground (GND) ing.
[0017]
　Safety circuit 20 includes a plurality of contacts 20a belonging to the safety device group, 20b, 20c, consists of 20d, a plurality of contacts in response to actuation or non-actuation of each contact is connected in series (multiple safety devices to each other They are connected in series). Each contact 20a ~ 20d is composed of, for example, a final limit switch for detecting the excesses of the car 8, the governor switch for detecting overspeed of the car 8, door opening and closing detection switch hall, etc. door opening and closing detection switch of the car 8 . In this case, among the contact points 20a ~ 20d, when any one of the contacts are OFF, the power supply circuit is opened, the circuit 21, 23 and 25, is cut off power supply to the buffer circuit 22, 24, and 26. For example, when the governor switch is operated, by contact of the governor switch is turned OFF, the power feeding circuit is opened, the contactor 3, the circuit controls the first contacts 11 and second contacts 12 21, 23, 25 power supply to is cut off, is interrupted power supply of the power converter 4 and the hoisting machine 7, the operation of the brake 16, the car 8 is braked.
[0018]
　Circuit 21 for controlling the contactor 3, when the power supply to the circuit 21 is cut off, shut off the contactor 3 (OFF) to cut off the power supply to the power converter 4, at the time of power supply to the circuit 21, the contactor 3 is in a conductive state (oN) to supply power to the power converter 4. Buffer circuit 22 connected to the secondary side of the circuit 21 for controlling the contactor 3 is a circuit which is controlled from the controller 5, for example, in implementing the control of the elevator car, the controller 5 is a buffer circuit 22 by introducing, if a state in which the safety device group is not operating (the contact points 20a ~ 20d is turned on), electric power is supplied to the circuit 21, the contactor 3 is rendered conductive, the power to the power converter 4 a state that is supplied. In this case, the circuit 21 and the buffer circuit 22 is configured as a first control circuit for controlling the opening and closing of the contactor (power switch) 3.
[0019]
　Circuit 23 for controlling the first contact 11, when the power supply to the circuit 23 is cut off, blocking the first contact 11 and the contactor 14 to cut off the power supply to the brake coil 15, the circuit 23 when the power supply, the first contact 11 and the contactor 14 is in a conductive state, it supplies power to the brake coil 15. By the power supply to the brake coil 15 is interrupted, is carried out the braking for the car 8 by the brake 16, at the time of power supply to the brake coil 15, the opening of the brake 16 is performed, the brake for the car 8 by the brake 16 It is released. Buffer circuit 24 connected to the secondary side of the circuit 23 for controlling the first contact 11 is a circuit which is controlled from the controller 5, it is basically on the secondary side of the circuit 21 for controlling the contactor 3 It performs the same operation as the buffer circuit 22 connected, is utilized to implement the opening or braking of the brake 16. For example, a state in which the safety device group is not operating (the contact points 20a ~ 20d is ON), when the controller 5 is turned to the buffer circuit 24, and the first contact 11 and the contactor 14 is in a conductive state, the brake 16 open is performed, the controller 5 may not turn on the buffer circuit 24, the first contact 11 and the contactor 14 becomes non-conductive, the braking of the brake 16 is performed. In this case, the circuit 23 and the buffer circuit 24 is configured as a second control circuit for controlling the opening and closing of the first contact 11.
[0020]
　Circuit 25 for controlling the second contact 12 is a circuit connected to the circuit 23 in parallel to control the circuit 21 and the first contact 11 for controlling the contactor 3, in order to bypass the first contact 11 It is used. Buffer circuit 26 connected to the secondary side of the circuit 25 for controlling the second contact 12 is a circuit which is controlled from the controller 5, in a state where the contactor 3 and the first contact 11 is interrupted, the it is turned circuit for bypassing the one contact 11. That is, the state in which the safety device group is not operating (the contact points 20a ~ 20d is ON), when the controller 5 is turned to the buffer circuit 26 becomes a second contact 12 is conductive state, the contactor 3 and the first even when the contact 11 is cut off, the brake power is supplied to the brake circuit bypasses the first contact 11. In this case, the circuit 25 and the buffer circuit 26 is configured as a third control circuit for controlling the opening and closing of the second contact 12. Further, controller 5 controls the operation of the power converter 4, for managing the first control circuit and the second control circuit and third control circuit as the control target.
[0021]
　Next, a description how to use the second circuit 25 and the buffer circuit 26 for controlling the contacts 12. When performing passenger rescue operation by opening operation of the brake 16, it is necessary to feed into the brake circuit. However, if the power converter 4 is in the powered state, the motor of the hoisting machine 7 is likely to operate. Therefore, controller 5 without placing the buffer circuits 22 and 24, by turning off the buffer circuits 22 and 24, to cut off the circuit 23 for controlling the circuit 21 and the first contact 11 for controlling the contactor 3 to restrain Mazukago 8, then the controller 5 by inputting the buffer circuit 26, a circuit 25 for controlling the second contact 12 to a conductive state, the brake braking power via the second contact 12 can be performed feeding only the circuit, it is possible to perform the rescue operation to perform open brake 16 as a system.
[0022]
　At this time, the controller 5, upon opening operation of the brake 16, and instructs the opening operation of the contactors (power switch) 3 with respect to the first control circuit, cut off the power supply to the power converter 4, the opening operation and command of the first contact 11 to the second control circuit to cut off the power supply to the brake circuit, then, the closing operation of the second contact 12 relative to the third control circuit It instructs, by the power from the power source (external power source 1) to bypass the first contact 11, and supplies the brake circuit. In this case, a respective safety device inoperative, on the condition that the respective contacts belonging to the safety circuit 20 is in the closing operation condition, the contactor (power switch) 3 and running the first contact 11 is the opening operation and, the second contact 12 to perform the closing operation.
[0023]
　Further, the primary side of the circuit 25 for controlling the second contact 12, the safety device group of the safety circuit 20 is connected. Thus, even during the opening operation of the brake 16, if any of the safety device is actuated, that the power supply to the circuit 25 for controlling the second contact 12 is broken, also power supply to the brake circuit is blocked, it is possible to braking by the brake 16. In this case, be any one of the operating state of the safety device, any one of the contacts belonging to the safety circuit 20 is in the condition that in the open operating state, the second contact point 12 executes the opening operation.
[0024]
　Figure 3 is a block diagram for explaining the processing contents of the controller. 3, controller 5, CPU (Central Processing Unit), a memory, a computer device comprising information processing resources such as input and output interfaces. If the CPU, when the rescue operation start command is input, executes the rescue operation start detection processing 30, if the safety device output is input, for example, a signal indicating that each safety device has operated is input, perform a safety device detection process 31, when the feedback signal indicating each operation state of the circuit 21, 23, 25 is input, executes the circuit 21, 23, 25 detection processing 32, safety and rescue operation start detection processing 30 each processing result of the device detection process 31 and the circuit 21, 23, 25 detection process 32 based on executing the braking circuit on process 33. That is, the brake circuit input process 33, the rescue operation start detection processing 30 processing result rescue operation start command indicating a state and an actuated condition of the safety device showing the processing result of the safety device detection process 31, and the circuit 21, 23, shows the 25 processing result of the detection process 32 is executed based on a feedback signal indicating the respective operating state of each circuit 21, 23, 25. Incidentally, the rescue operation start command may be output from another software process in the controller, for example it may be inputted maintenance personnel manually.
[0025]
　The CPU, for example, the rescue operation start command is input, if you run a rescue operation start detection processing 30, as the processing result of the braking circuit input process 33 creates a command to cut off the circuit 21 for controlling the contactor 3 and executes a circuit 21 command creation process 34 performs a circuit 23 command creation process 35 for creating a command to cut off the circuit 23 for controlling the first contact 11. Then, CPU is a brake circuit input process 33, after confirming the feedback signal that the circuit 23 for controlling the circuit 21 and the first contact 11 for controlling the contactor 3 is interrupted, control a second contact point 12 create a command for turning on the circuit 25 to performs the circuit 25 command creation process 36. Furthermore, CPU is a brake circuit input process 33, when it is confirmed that there is ready to start the rescue operation, to perform the rescue operation status output process 37. In the circuit 21 the command creation process 34, circuit 23 commands creation process 35, circuit 25 commands creation process 36, based on an output signal which is input from the brake circuit input process 33, respectively, a command for controlling the respective circuits each is output to the buffer circuit 22, 24 and 26. Further, the rescue operation status output processing 37, signal that is ready to start the rescue operation, for example, different software blocks and implementing the rescue operation, LED which are about the substrate, another control terminal connected to the controller 5 is output to the like.
[0026]
　Figure 4 is a flowchart for explaining the operation of the controller. 4, first, the controller 5 judges whether the rescue operation start command is on (ON) (step S101). Controller 5, when the rescue operation start command is not ON, the words, if the rescue operation start command has not been input, and ends the processing in this routine. On the other hand, if the rescue operation start command was ON, the words, if the rescue operation start command from the input device connected to the controller 5 is inputted, the controller 5, the feedback signal of the circuit 21, 23, 25 there off it is determined whether the (oFF) (step S102), if a NO at step S102, i.e., if either of the feedback signal was ON, the respective circuits 21, 23, 25 again outputs a command to OFF, the processing is terminated (step S103), if a YES at step S102, i.e., when any of the feedback signal is a OFF, for the circuit 21 and circuit 23 to the OFF It outputs a command to output a command to the circuit 25 to oN (step S104). That is, the controller 5, by turning on the second contact 12, executes an operation that bypasses the first contacts 11 are cut off power.
[0027]
　Thereafter, the controller 5 determines a feedback signal of the circuit 21, 23 is OFF, the feedback signal of the circuit 25 whether ON (step S105). If YES in step S105, i.e., when correctly detect a feedback signal, controller 5 outputs that can start the rescue operation (step S106), and ends the series of processes. If in step S105 of NO, that is, when it is not possible to correctly detect the feedback signal, the controller 5 determines a failure of any of the circuits, the process was stopped (step S107), and ends the series of processes.
[0028]
　According to this embodiment, upon opening operation of the brake, after stopping the movement of the car can be opened automatically operate the brake. That is, the controller 5, while cut off the power to the power converter 4 for supplying electric power to the motor of the hoisting machine 7, by supplying electric power only to the brake 16, the cage 8 to open the brake 16 moves it can be. In addition, by interrupting the power to the power converter 4, can Haisuru unnecessary operation of the motor side of the hoisting machine 7, it is possible to improve the safety during the opening operation of the brake 16. Furthermore, by the primary side of the circuit 25 for controlling the second contact 12 is connected to the safety circuit 20, during the opening operation of the brake 16, when one of the safety device is actuated, the supply to the brake 16 by power is cut off, can be carried out emergency braking by the brake 16, it is possible to improve the safety during the opening operation of the brake 16.
[0029]
　The present invention is not limited to the embodiments described above, but includes various modifications. For example, the embodiment described above are those described in detail in order to better illustrate the invention and are not intended to be limited to those having the necessarily all described configurations. A part of the configuration of the embodiment, it is possible to be added, deleted, or replaced another configuration.
[0030]
　Further, the above constitutions, functions, etc., some of them or all, e.g., may be implemented by hardware such as by designing an integrated circuit. Further, the above constitutions, functions, etc., interprets the program the processor to implement the respective functions may be realized by software by executing. Program for realizing each function, a table, information such as file, memory, a hard disk, SSD (Solid State Drive) recording apparatus such as, or, IC cards, placing recorded on an SD card, a recording medium such as a DVD can.
DESCRIPTION OF SYMBOLS
[0031]
　3 contactor, 4 power converter 5 controller, 6 power supply control circuit, 7 hoist, 8 baskets, 9 speed governor, 11 first contact 12 second contact 14 contactors, 15 brake coil, 16 brake, 20 safety circuit, 21, 23, 24 circuits, 22, 24, 26 buffer circuit

WE CLAIM

And car, and the sheave which is wound around the rope connecting the counterweight and the car, a motor for adding a rotational force to the sheave, a power converter for controlling the rotation of the motor, the braking force to the sheave in elevators provided with a brake for implementing the opening operation for opening the braking force applied to the braking operation or the sieve are added,
　and a power switch for opening and closing the first supply path connecting the power source and the power converter,
　power from the power supply supply is carried out the opening operation on the brake when subjected to a, and a brake circuit for implementing the braking operation to the brake when the supply of power is cut off from the power supply,
　and the said power supply brake circuit a first contact point for opening and closing the second power supply path connecting,
　which is connected in parallel to the first contact, a second contact opening and closing the second power supply path,
　before A first control circuit for controlling the opening and closing of the power switch,
　and a second control circuit for controlling the opening and closing of the first contact point,
　and a third control circuit for controlling the opening and closing of the second contact,
　the to control the operation of the power converter, and a controller that manages the said the first control circuit a second control circuit and the third control circuit as a control object,
　wherein the controller includes
　Upon opening operation of the brake, the issuing the opening operation of the power supply switch to the first control circuit to cut off supply of the power to the power converter, to said second control circuit said first instructs the opening operation of the contacts, to cut off power supply to the brake circuit, then the command the closing of the second contact to the third control circuit, the power supply power from by bypassing the first contact, the elevator system and supplying to the brake circuit.
[Requested item 2]
　A elevator system according to claim 1,
　further comprising a safety circuit in which a plurality of contacts in response to actuation or non-actuation of a plurality of safety devices are connected in series to each other,
　the said first control circuit the second control circuit and said third control circuit is
　inserted into the feed circuit connecting the DC power supply and ground, are connected in parallel with each other, and wherein are safety circuits respectively connected in series,
　each safety device there a non-operating state, the on condition that the respective contacts belonging to the safety circuit is in closing operation condition, the running power supply switch of the first contact the opening operation, said second contact elevator system characterized by performing the closing operation.
[Requested item 3]
　A elevator system according to claim 2,
　wherein one of the safety devices is an operating state, the safety condition that any one of the contacts belonging to the circuit is in the open operating state, said first elevator system characterized in that the secondary contacts to perform the opening operation.