JP4580798B2 - Elevator system - Google Patents

Description

  The present invention relates to an elevator system, and more particularly, to an elevator system that can be used when a drive device fails in a machine room-less elevator in which a drive device is disposed in a hoistway or during temporary operation.

In a conventional machine room-less elevator, as a countermeasure against a drive unit failure, the brake is released using a brake release device, and the car is lifted and lowered using the weight difference between the car and the suspended weight. Is used (see, for example, Patent Document 1). In addition, as a method of lowering the car when the elevator is on the uppermost floor, the lifting weight can be lifted and lowered by using a structure that allows the lifting weight to be partially removable, and changing the weight difference between the lifting weight and the car. There are some (see, for example, Patent Documents 2 and 3). Although there is no case where the drive device fails, there is an elevator maintenance device in which a terminal is provided on the floor side and a display means is connected to measure the current of the motor / power converter (see, for example, Patent Document 4). ). Further, there is a case where a maintenance inspection part in the control panel is provided on the floor side (see, for example, Patent Document 5).
JP 2001-139250 A JP 2002-128411 A JP 2002-173277 A JP-A-11-116153 JP 2000-247554 A

  However, in the configuration of Patent Document 1, when the weight difference between the car and the suspension weight is almost zero, that is, a so-called balance load, the car does not move by the weight difference even if the brake device is opened. Absent. For this reason, in particular, in a system in which the drive device is provided in the upper part of the elevator hoistway, if a failure occurs in the state of a balance load, a countermeasure is taken such as creating a scaffold from the top floor and repairing the failure part. And takes time. In the configurations of Patent Document 2 and Patent Document 3, the weight difference can be changed by attaching / detaching the lifting weight only when the car is on the uppermost floor and the lifting weight is on the lowermost floor. In some cases, it is difficult to implement from the viewpoint of the drop impact of the desorption weight. Furthermore, it is necessary to provide a sufficient safety mechanism so that the suspension weight of the detachable part does not fall during normal traveling. Patent Documents 4 and 5 measure the current of an existing driving device from the floor side, or provide a switch or connector for maintaining and inspecting the existing driving device on the floor side, and provide terminals. Although it is a related technique from the viewpoint, it has not been able to cope with the raising and lowering of the car at the time of failure of the drive device itself, which is the subject of the present invention.

  An object of the present invention is to provide an elevator system that can perform a lifting operation regardless of the load weight condition of a car when a drive device fails in a machine room-less elevator or when a temporary operation is performed. is there.

In order to achieve the above object, according to the present invention, at least inside the hoistway, a car, a suspended weight, a motor for moving the car up and down, and power conversion for driving and controlling the motor In an elevator system having a controller and a control panel comprising the controller, a terminal capable of supplying power to the motor from outside the hoistway is provided, and a portable power converter capable of driving the motor is provided at this terminal. The motor is electrically connected to at least the power converter when the power converter in the control panel is in a normal state, and the motor is moved up and down when the power converter fails. Means for switching the connection to a terminal that enables power feeding from the outside of the road, and the terminal that enables power feeding from the outside of the hoistway is an elevator door part provided on the floor, or , Button portion, or, characterized in that provided in the jamb portion.

  With the above configuration, when the drive device fails in a machine room-less elevator or when a temporary operation is performed, the lifting / lowering operation can be performed regardless of the loading weight condition of the car.

  According to the present invention, when a drive device breaks down in a machine room-less elevator or when a temporary operation is performed, the lifting / lowering operation can be performed regardless of the loading weight condition of the car.

  Embodiments of an elevator system according to the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment of an elevator system of the present invention, FIG. 2 is a first block diagram for explaining the operation of emergency operation in FIG. 1, and FIG. 3 is a flow chart of the system during normal operation, FIG. 4 is a flowchart of the system when the power converter fails, FIG. 5 is a second configuration diagram for explaining the operation of the emergency operation, FIG. 6 is a third configuration diagram for explaining the operation of the emergency operation, and FIG. FIG. 8 is a fourth configuration diagram for explaining the operation of the emergency operation, FIG. 9 is a fifth configuration diagram for explaining the operation of the emergency operation, and FIG. 10 is a diagram of the emergency operation. FIG. 11 is a first block diagram explaining a portable power converter, FIG. 12 is a second block diagram explaining a portable power converter, and FIG. 13 is a portable power diagram. It is a 3rd block diagram explaining a converter.

  In FIG. 1, at least a car 2, a lifting weight 3, a motor 4, and a control panel 5 are installed inside the hoistway 1, and at least one floor side door portion 7 or a surrounding three-way frame or button is provided. The part 8 and the like are provided with a transmission / reception terminal 8A and a power supply terminal 8B for the portable power converter 6. The motor 4 is a drive motor that raises and lowers the passenger car 2 and the suspension weight 3, and is a machine room-less type elevator installed in the upper part of the hoistway 1. The control panel 5 converts the electric power obtained from the commercial power source 17 and drives the motor 4. However, it is desirable to install the control panel 5 in the vicinity of the motor 4 from the viewpoint of reducing adverse effects such as transmission loss and noise. For this reason, when the motor 4 is installed in the upper part of the hoistway 1, the control panel 5 is also installed in the upper part of the hoistway 1.

  The transmission / reception terminal 8A is electrically connected to the motor 4 or the control panel 5 and connected to the drive device connection terminal 6A of the portable power converter 6 so that the motor can be connected from the outside of the hoistway 1 to the motor. 4 is driven. Further, by connecting the power input terminal 6B of the portable power converter 6 to the power terminal 8B for the portable power converter 6 connected to the commercial power supply 17 provided in the vicinity of the transmission / reception terminal 8A, Power can be supplied to the power converter 6. The floor to which the transmission / reception terminal 8A and the power supply terminal 8B for the portable power converter are attached may be one floor or a plurality of floors. Further, if the terminals 8A and 8B are provided near the reference floor, there is an effect that the portable power converter 6 can be easily carried in. Further, if it is provided in the vicinity of the motor 4, the length of the wiring connecting the power terminal 8B for the portable power converter 6 installed in the hoistway to the motor 4 and the like can be shortened, thereby reducing the cost and the signal system. This has the effect of eliminating adverse effects such as noise contamination.

  Next, the 1st structure of the portable power converter 6 is demonstrated using FIG. The portable power converter 6 is supplied with power through the power input terminal 6 </ b> B, converted into DC power by a rectifier 46 provided in the portable power converter 6, and stored in the portable power converter 6. Electric power is stored in the element 47. Further, based on a command from the control circuit 49 provided in the portable power converter 6, the inverter 48 provided in the portable power converter 6 is driven. Further, the internal information of the elevator device used for calculation in the portable power converter 6 is input / output via the drive device connection terminal 6A, and the output power of the inverter 48 provided in the portable power converter 6 is input / output. Is supplied to the motor. The internal information of the elevator apparatus used for the calculation will be described in detail later.

  Next, the 2nd structure of the portable power converter 6 is demonstrated using FIG. In FIG. 12, the rectifier 46 provided in the portable power converter 6 of FIG. 11 is not used, but the battery 50 is used. In the configuration of FIG. 12, the battery weight increases, but obstacles in transportation can be reduced by providing the terminals on the lower floor. In addition, since the power terminal 8B for the portable power converter connected to the power source 17, the power input terminal 6B of the portable power converter 6 and the wiring in the hoistway can be deleted, the laying of the elevator system can be simplified and portable. The configuration of the power converter 6 can be simplified. Further, the battery 50 can be operated even with a battery having a small voltage value by lowering the motor operation speed at the time of emergency operation performed when the control panel 5 of FIG.

  Next, the 1st structure explaining the operation | movement of emergency operation is demonstrated based on FIG. The control panel 5 is for operating the power converter unit 9 based on information obtained from at least a power converter unit 9 for converting commercial power into power of an arbitrary frequency for driving the elevator, and a sensor attached to the elevator system. A controller 10 that calculates a command value, a brake release circuit 12 for releasing a brake attached to the motor 4, and a control power supply 11 that supplies power to the controller 10 and the brake release circuit 12 are configured. . The sensor information attached to the elevator system includes, for example, a signal from the rotary encoder 16 that detects the magnetic pole position and rotation speed of the motor 4, position information and loading weight information of the car 2, call information of the hall button 8, Or it is the output current information of the power converter 9 which is not illustrated.

  These sensor information is received by the sensor input / output unit 10B in the controller 10, and the control microcomputer 10A performs an operation based on the information. The control power supply 11 is a power supply that converts the AC power of the commercial power supply 17 into DC power and supplies power to the controller 10 and the brake release circuit 12. Moreover, the changeover switch 14 is attached between the power converter 9 and the motor 4, and the motor 4 is connected to the power converter 9 or the transmission / reception terminal 8A on the floor side. The changeover switch 14 may be driven by a signal from the controller 10. For example, when a signal is received from the controller 10, the motor 4 and the power converter 9 are connected to receive the signal. If not, the switch is such that the motor 4 and the transmission / reception terminal 8A are connected. The transmission / reception terminal 8A is connected to the changeover switch 14 via an electric wire capable of supplying electric power to the motor 4, and is connected to the controller 10 via a communication signal line. When the portable power converter 6 is connected to the transmission / reception terminal 8 </ b> A, the portable power converter 6 can supply driving power to the motor 4 and can transmit and receive sensor information from the controller 10. The sensor information to be transmitted / received may be a sensor signal itself or a signal converted into a digital signal or the like in the sensor input / output unit 10B.

  In the case of a signal converted into a digital signal or the like, it is necessary to provide a mechanism for restoring information in the control circuit unit 49 in the portable power converter 6 of FIG. 11 and FIG. It can also be applied when the transmission distance is long. Similarly, when a signal is transmitted from the portable power converter 6 to the controller 10, the control circuit unit 49 of the portable power converter 6 once converts the signal into a digital signal, and the controller 10 restores the information. Needless to say. Further, the controller 10 outputs information such as an internal constant of the motor 4, and performs a calculation reflecting this in the control circuit in the portable power converter 6. The portable power converter 6 side may have a database regarding motor information, and the controller 10 side may output a signal that can determine the motor type.

  Next, the flow of the system during normal operation will be described with reference to FIG. First, the commercial power supply 17 is turned on to the control panel 5 (S1). At this time, in the control panel 5, power is supplied from the control power supply 11 to the controller 10 and the brake release circuit, and the control microcomputer 10A in the controller is activated (S2). Next, the controller 10 outputs a signal for turning on the main circuit contactor 13 installed between the commercial power supply 17 and the power converter 9 (S3). The main circuit contactor 13 is a switch that conducts the commercial power supply 17 and the power converter 9 only when receiving a signal from the controller 10. Next, when a call is generated from the hall button 8 or the button in the car 2 (S4), the controller 10 outputs a control signal to the power converter 9, and the power converter drives the motor 4. (S5). Next, the controller 10 outputs a signal for releasing the brake 15 of the motor 4 to the brake release circuit 12, and the brake release circuit 12 releases the brake 15 of the motor 4 (S6). At this time, the changeover switch 14 causes the controller 10 to short-circuit between the power converter 9 and the motor 4. Next, when the car 2 arrives at the destination floor, the controller 10 performs a braking operation by the brake 15 (S7), stops the power converter 9 (S8), and stops the motor 4. Output a signal.

  Next, a case where the power converter has failed will be described with reference to FIG. Here, it is assumed that an element constituting the power converter 9 has failed and the power has been interrupted, and the controller 10 has not failed. First, the commercial power supply 17 is turned on to the control panel 5 (S10), and the control microcomputer 10A in the controller 10 is activated (S11). When the power converter 9 is out of order, the controller 10 receives the failure detection signal and notifies the occurrence of the failure to the outside such as the control center (S12). Next, the maintenance staff arrives and connects the portable power converter 6 to the transmission / reception terminal 8A (S13). When the control microcomputer 10A in the controller 10 detects the connection of the portable power converter 6 (S14), the selector switch 14 in FIG. 2 is switched to the transmission / reception terminal 8A side (S15). This may be in the form of conduction with the transmission / reception terminal 8A side in the initial state. Next, the portable power converter 6 is operated from the floor side to drive the motor 4 (S16), and the controller 10 outputs a signal for releasing the brake 15 of the motor 4 to the brake release circuit 12 to release the brake. The circuit 12 releases the brake 15 of the motor 4 (S17). The operation here is an emergency operation, and the car 2 moves up and down at a speed slower than usual. Next, when the car 2 arrives at the nearest floor, the controller 10 outputs a signal for braking the brake 15 (S18), and at the same time, the portable power converter 6 is stopped and the motor 4 is turned off. Stop (S19).

  Next, a second configuration for explaining the operation of the emergency operation will be described with reference to FIG. In FIG. 2, the transmission / reception terminal 8A is connected to the power supply line connected to the changeover switch 14 and the communication signal line connected to the controller 10, whereas in FIG. The power supply line connected to is used in the same manner as in FIG. 2, but the communication signal line is not used, and the wireless circuit 36 is used to wirelessly detect the portable power converter 6 and sensor detection signal, brake release, etc. The command information etc. is communicated. According to this method, it is necessary to provide a wireless device on the portable power converter 6 side, but there is an effect that the number of wirings can be reduced.

  Next, the 3rd structure explaining the operation | movement of emergency operation is demonstrated using FIG. In FIG. 6, an operation assuming that the control panel 5, in particular, the power converter 9 and the controller 10 has failed is also considered, and the rotary encoder changeover switch 37 is used to send and receive the signal of the rotary encoder 16 to the transmission / reception terminal. It is characterized in that it is transmitted to 8A. The rotary encoder changeover switch 37 and the changeover switch 14 are capable of signal transmission even when the controller 10 is out of order by a mechanism for switching the switch with a signal from the portable power converter 6. This may be a switch mechanism that is always connected to the transmission / reception terminal 8A side when no signal is transmitted from the controller 10 to the rotary encoder changeover switch 37 and the changeover switch 14. FIG. 6 is also characterized by a mechanism for supplying power to the brake drive circuit and transmitting / receiving signals to / from the brake power circuit 6 from the portable power converter 6 via the drive device connection terminal 6A and the transmission / reception terminal 8A. As a result, even when the control panel 5 breaks down, the brake can be released from the outside of the hoistway, and can be quickly driven by the portable power converter 6.

  Next, the flow of the system when the control panel fails will be described with reference to FIG. Here, the description will be made on the assumption that even if the commercial power supply 17 is turned on to the control panel 5, it cannot be operated.

  First, the maintenance person connects the portable power converter 6 to the transmission / reception terminal 8A (S20). Next, an operation of switching the changeover switch 14 to the transmission / reception terminal 8A side (S21) and an operation of switching the rotary encoder changeover switch 37 to the transmission / reception terminal 8A side (S22) are performed. Next, the motor 4 is driven by the portable power converter 6 (S23), and a signal for releasing the brake 15 of the motor 4 is output to the brake release circuit 12. The brake release circuit 12 releases the brake 15 of the motor 4 (S24). When the car 2 arrives at the nearest floor, the brake 15 is braked (S25), the portable power converter 6 is stopped, and the motor 4 is stopped (S26). Thereby, the emergency driving can be carried out by the portable power converter 6 even when the control panel fails.

  Next, the 4th structure explaining the operation | movement of emergency operation is demonstrated using FIG. Similar to FIG. 6, an operation that assumes a case where the control panel 5 fails is also considered. In FIG. 8, in addition to the rotary encoder 16 connected to the control panel 5, a second rotary encoder 45 directly connected to the transmission / reception terminal 8A is provided. Since the second rotary encoder 45 is assumed to be used during low-speed operation, the second rotary encoder 45 may be less expensive and less accurate than the rotary encoder 16. In this case, there is an effect that the mechanism such as the rotary encoder changeover switch 37 can be reduced.

  Next, a fifth configuration for explaining the operation of the emergency operation will be described with reference to FIG. Similar to FIG. 7, an operation that assumes a case where the control panel 5 has failed is also considered. In FIG. 9, the brake 15 of the motor 4 is connected to the transmission / reception terminal 8 </ b> A, and the brake can be released using the portable power converter 6.

  In the case of the form of FIG. 9, the portable power converter 6 shown in FIG. 13 is used. The portable power converter 6 includes a second brake release circuit 51 and is connected to the drive device connection terminal 6A. By connecting the driving device connection terminal 6A of FIG. 13 to the transmission / reception terminal 8A of FIG. 9, the portable power converter 6 can perform a brake operation. With this configuration, most of the functions of the electric system section of the control panel 5 can be replaced by the portable power converter 6, so that there is an effect that it is possible to widen the compensation range of the emergency operation operation at the time of failure or the like.

  Next, the 6th structure explaining the operation | movement of emergency operation is demonstrated using FIG. FIG. 10 shows a configuration without a magnetic pole position sensor that does not use the second rotary encoder 45 in FIG. In general, sensorless control is said to be difficult to control at low speed and high torque. However, since the car 2 and the suspension weight 3 are in a balanced state under the conditions in which the present invention is implemented, driving with low torque is a prerequisite, so that rescue by driving without a magnetic pole position sensor is sufficiently possible. In this case, since the second rotary encoder and the signal line of the second rotary encoder are deleted, there is an effect that an emergency operation such as a failure can be performed with a very simple configuration.

  In FIG. 1, the transmission / reception terminal 8 </ b> A is installed on the floor side door portion, but it may be located anywhere outside the hoistway, for example, near the power supply facility. In addition, although an example in which the drive device has failed is described in FIG. 1, it goes without saying that the drive according to the present invention may be carried out for lifting and lowering operations during temporary operation such as installation or maintenance. Yes.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the scope of the present invention.

It is a lineblock diagram showing one embodiment of an elevator system of the present invention. It is a 1st block diagram for demonstrating the operation | movement of the emergency operation in FIG. It is a flowchart of the system at the time of normal operation. It is a flowchart of a system at the time of a power converter failure. It is a 2nd block diagram explaining operation | movement of emergency operation. It is a 3rd block diagram explaining operation | movement of emergency operation. It is a flowchart of the system at the time of a control panel failure. It is a 4th block diagram explaining operation | movement of emergency operation. It is a 5th block diagram explaining operation | movement of emergency operation. It is a 6th block diagram explaining operation | movement of emergency operation. It is a 1st block diagram explaining a portable power converter. It is a 2nd block diagram explaining a portable power converter. It is a 3rd block diagram explaining a portable power converter.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 3 Lifting weight 4 Motor 5 Control panel 6 Portable power converter 6A Drive connection terminal 6B Power input terminal 7 Door 8 Hall button 8A Transmission / reception terminal 8B Power supply terminal for portable power converter 9 Power conversion 10 Controller 10A Control microcomputer 10B Sensor input / output part 11 Control power supply 12 Brake release circuit 13 Main circuit contactor 14 Changeover switch 15 Brake 16 Rotary encoder 17 Commercial power supply 36 Radio circuit 37 Rotary encoder changeover switch 45 Second rotary encoder 46 Mobile Rectifier provided in portable power converter 47 Power storage element provided in portable power converter 48 Inverter provided in portable power converter 49 Control circuit provided in portable power converter 50 Battery 51 Portable The second block provided in the power converter Over key open circuit

Claims (6)

Elevator system having at least a car, a suspended weight, a motor for moving the car up and down, a power converter for driving and controlling the motor, and a control panel comprising the controller inside the hoistway In
A terminal capable of supplying power to the motor from the outside of the hoistway is provided, and a portable power converter capable of driving the motor is connected to the terminal, and the motor is a power converter in a control panel. When the power converter is in a normal state, at least electrically connected to the power converter, and when the power converter fails, means for switching the connection to a terminal that enables power feeding from the outside of the hoistway And an elevator system characterized in that a terminal that enables power feeding from the outside of the hoistway is provided in an elevator door part, a button part, or a three-way frame part provided on the floor . A terminal that enables power supply from the outside of the hoistway is also connected to a controller in the control panel, and by means of the portable power converter, information on the magnetic pole position of the motor, load information on the car, or car The elevator system according to claim 1, wherein position information is detected . A terminal that enables power supply from the outside of the hoistway is also connected to a mechanism for operating the brake or the brake of the motor, and the opening / closing operation of the brake by the portable power converter or the portable power converter 2. The elevator system according to claim 1 , wherein power supply and signal transmission are performed to a mechanism for operating a brake . The elevator system according to claim 1, wherein a power supply terminal of the portable power converter is provided in the vicinity of a terminal that enables power feeding from outside the hoistway . The elevator system according to claim 1 , wherein the drive control of the motor by the portable power converter is controlled so as to be slower than the motor drive speed during normal elevator operation . The control panel is provided with a wireless system, and comprises means for wirelessly transmitting motor magnetic pole position information, car loading weight information or car position information to the portable power converter. The elevator system according to claim 1.

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