Elevator arrangement

Abstract

When the failure detection section (41) detects a specific failure and the entrapment detection section (42) detects entrapment, the transmission section (51) transmits a first signal to the information center (4). The process execution section (43) starts rescue processing when a second signal is received as a response to the first signal. The hoisting machine control section (45) causes the brake device (13) not to act in a state where dynamic braking of the motor (11) is effective during the rescue processing. When the position detection section (47) detects that the car (5) is disposed in a rescue zone during the rescue processing, the hoisting machine control section (45) causes the brake device (13) to act.

Description

Technical Field

[0001] This invention relates to elevator devices. Background Technology

[0002] Patent Document 1 describes an elevator device. The elevator device described in Patent Document 1 includes a mechanism for preventing the braking device of the traction machine from operating. When passengers are trapped inside the car, maintenance personnel at the landing operate this mechanism while observing information displayed on a monitor, moving the car to the nearest floor.

[0003] Patent Document 1 also describes an operator located at a distance operating a device that replaces the device, so that the braking device of the traction machine is not activated.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2011-63372 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] In the elevator device described in Patent Document 1, maintenance personnel must go to the scene to rescue passengers.

[0009] Patent document 1 also describes a method of stopping the braking device by manual operation of an operator. However, in order to manually operate the braking device from a distance, the operator needs to have superb skills.

[0010] This invention was made to solve the aforementioned problems. The object of this invention is to provide an elevator device that eliminates the need for maintenance personnel to go to the site to rescue passengers trapped in the car, and does not require highly skilled operators at a distance.

[0011] means for solving problems

[0012] The elevator device of the present invention comprises: a car; a rope suspending the car; a pulley on which the rope is wound; a motor for driving the pulley; a braking device that prevents the pulley from rotating when activated; a first detection unit for detecting a specific fault that prevents the motor from driving the pulley; a second detection unit for detecting a passenger trapped in the car; a sending unit that sends a specific first signal to an information center with an operator present when the first detection unit detects the specific fault and the second detection unit detects a entrapment; a processing execution unit that initiates rescue processing upon receiving a second signal from the information center in response to the first signal; a first control unit that, during the rescue processing, prevents the braking device from operating while the dynamic braking of the motor is effective; and a third detection unit that detects a specific rescue zone containing a landing stop position, wherein when the third detection unit detects that the car is positioned in the rescue zone during the rescue processing, the first control unit activates the braking device.

[0013] The elevator device of the present invention comprises: a car; a rope suspending the car; a pulley on which the rope is wound; a motor for driving the pulley; a braking device having a rotating body that rotates in conjunction with the pulley and guide shoes that contact and separate from the rotating body, capable of varying the force pressing the guide shoes against the rotating body according to a supplied voltage; a first detection unit for detecting a specific fault that prevents the motor from driving the pulley; a second detection unit for detecting a situation where a passenger is trapped in the car; and a dispatch unit that dispatches when the first detection unit detects the specific fault and the second detection unit detects a trapped passenger. When the first signal is received, a specific first signal is sent to the information center where the operator is present; a processing execution unit, which initiates rescue processing upon receiving a second signal from the information center in response to the first signal; a first control unit, which moves the car by controlling the voltage supplied to the braking device during the rescue processing; and a third detection unit, which detects when the car is positioned in a specific rescue zone containing a landing stop position, and when the third detection unit detects that the car is positioned in the rescue zone during the rescue processing, the first control unit prevents the sheave from rotating via the braking device.

[0014] Invention Effects

[0015] The elevator device according to the present invention eliminates the need for maintenance personnel to travel to the site to rescue passengers trapped inside the car. Furthermore, it does not require highly skilled operators at a distance. Attached Figure Description

[0016] Figure 1 This is a diagram illustrating an example of an elevator system.

[0017] Figure 2 It is a diagram used to illustrate the functions of control and monitoring devices.

[0018] Figure 3 This is a flowchart illustrating an example of the operation of a control device.

[0019] Figure 4 This is a flowchart illustrating an example of the operation of a control device.

[0020] Figure 5 This is a flowchart illustrating an example of the operation of a monitoring device.

[0021] Figure 6 This is a diagram used to illustrate the functions of the information center.

[0022] Figure 7 This is a flowchart illustrating an example of the operation of a control device.

[0023] Figure 8 This is a diagram illustrating an example of the hardware resources of a control device.

[0024] Figure 9 This is a diagram representing other examples of the hardware resources of the control device. Detailed Implementation

[0025] The following detailed description is based on the accompanying drawings. Repetitive descriptions have been simplified or omitted where appropriate. In the drawings, the same reference numerals denote the same or equivalent parts.

[0026] Implementation Method 1

[0027] Figure 1 This is a diagram illustrating an example of an elevator system. Figure 1 The elevator system shown has an elevator unit 1. The elevator unit 1 is connected to a remote information center 4 with an operator 3 via a network 2.

[0028] As an example, Network 2 is an IP network. An IP network is a communication network that uses IP (Internet Protocol) as its communication protocol. Network 2 can be a closed network or an open network.

[0029] Information Center 4 manages multiple elevator units. Elevator Unit 1 is an example of an elevator unit managed by Information Center 4.

[0030] Elevator unit 1 has a car 5 and a counterweight 6. The car 5 moves up and down in a shaft 7. The counterweight 6 moves up and down in the shaft 7. The car 5 and the counterweight 6 are suspended in the shaft 7 by ropes 8. The ropes 8 are, for example, steel wire ropes.

[0031] The traction machine 9 drives the car 5. The traction machine 9 has a pulley 10, a motor 11, and an encoder 12 (in... Figure 1 (not shown in the figure) and braking device 13.

[0032] The pulley 10 is rotatably supported on the frame of the traction machine 9. A rope 8 is wound around the pulley 10. A motor 11 generates a driving force to drive the pulley 10; that is, the motor 11 causes the pulley 10 to rotate. An encoder 12 outputs a signal corresponding to the rotation angle of the pulley 10. The encoder 12 is, for example, a rotary transformer. If the elevator unit 1 has a speed governor, the function of the encoder 12 can also be incorporated into the speed governor.

[0033] Braking device 13 is a device used to keep the pulley 10 stationary. When activated, braking device 13 prevents the pulley 10 from rotating. If braking device 13 is not activated, the pulley 10 can rotate. Hereinafter, the term "activated" will be used to indicate that braking device 13 is functioning, i.e., preventing the pulley 10 from rotating. The term "not activated" will be used to indicate that braking device 13 is not functioning, i.e., not preventing the pulley 10 from rotating.

[0034] As an example, the braking device 13 has a rotating body and a guide shoe. The rotating body rotates in conjunction with the pulley 10. The guide shoe is configured to move in a manner that allows it to contact and separate from the rotating body. By pressing the guide shoe against the rotating body, resistance is generated to the rotation of the pulley 10. In such a braking device 13, when power is supplied to the braking device 13, the guide shoe disengages from the rotating body, and the braking device 13 does not operate. That is, the braking device 13 is released. When power to the braking device 13 is cut off, the guide shoe presses against the rotating body, and the braking device 13 operates.

[0035] The traction machine 9 is controlled by the control device 14. That is, the movement of the car 5 is controlled by the control device 14. The monitoring device 15 is connected to the control device 14. The monitoring device 15 communicates with the information center 4 via the network 2.

[0036] Figure 1 This example shows a machine room 16 located above the shaft 7, where the traction machine 9 and control device 14 are installed. The traction machine 9 and control device 14 can also be installed in the shaft 7. When the traction machine 9 is installed in the shaft 7, it can be installed at the top of the shaft 7 or at the bottom of the shaft 7.

[0037] The car 5 and the control unit 14 are connected via a control cable 17. The equipment in the car 5 is controlled by the control unit 14. The car 5 includes a door 21, a motor 22, a weighing device 23, a camera 24, and an operating panel 25.

[0038] The entrance and exit of the car 5 are opened and closed via door 21. Motor 22 generates driving force to drive door 21. Weighing device 23 measures the load of car 5. Figure 1 This illustrates an example where the weighing device 23 is located at the bottom of the car 5. The weighing device 23 may also be located at the end of the rope 8.

[0039] The control panel 25 includes a display 26, an intercom 27, a speaker 28, and buttons 29. The intercom 27 is used for communication between passengers inside the car 5 and operator 3 located in the information center 4. The line used by passengers inside the car 5 to communicate with operator 3 via the intercom 27 can also be a different line than the line connected to the information center 4 via the monitoring device 15. Buttons 29 include a destination button, an open door button, and a close door button. Buttons 29 may also include other buttons.

[0040] The elevator unit 1 has a stopping device for detecting when the car 5 is positioned in a specific stopping area. The stopping area is predetermined according to the height of each floor 31. For example, a stopping area predetermined according to the height of floor 31 on floor N includes the position where the car 5 stops at floor 31 on floor N. The position where the car 5 stops at floor 31 on floor N is the position where the floor surface of floor 31 on floor N is at the same height as the floor surface of the car 5.

[0041] As an example, the docking device includes a photoelectric sensor 32 and a plate 33. The photoelectric sensor 32 is installed in the car 5. The plate 33 is installed in the hoistway 7. The plates 33 are configured according to the height of each floor 31. For example, the photoelectric sensor 32 can detect that the range of the plate 33 configured according to the height of the Nth floor's floor 31 is the docking area of ​​the Nth floor. When the photoelectric sensor 32 detects the plate 33, it sends a detection signal corresponding to the detected plate 33 to the control device 14.

[0042] Figure 2 This diagram illustrates the functions of the control device 14 and the monitoring device 15. (For example...) Figure 2 As shown, the control device 14 includes a fault detection unit 41, a entrapment detection unit 42, a processing execution unit 43, a notification control unit 44, a traction machine control unit 45, a speed detection unit 46, a position detection unit 47, a door control unit 48, and a passenger detection unit 49. The monitoring device 15 includes a sending unit 51 and a request unit 52.

[0043] The following is for reference Figures 3-7 The operation of this elevator system is described in detail. Figure 3 and Figure 4 This is a flowchart illustrating an example of the operation of the control device 14. Figure 3 and Figure 4 This demonstrates a series of operations.

[0044] In the control device 14, it is determined whether a specific fault has been detected that prevents the motor 11 from driving the pulley 10 (S101). This fault is detected by the fault detection unit 41. As an example, if the inverter used to control the motor 11 malfunctions, it is determined to be "yes" in S101.

[0045] When the condition is determined to be "yes" in S101, the control device 14 determines whether the passenger is trapped inside the car 5 (S102). Passenger entrapment is detected by the entrapment detection unit 42. The entrapment detection unit 42 can also detect passenger entrapment using the load measured by the weighing device 23. Alternatively, the entrapment detection unit 42 can detect passenger entrapment using images captured by the camera 24.

[0046] When the fault detection unit 41 detects the aforementioned specific fault, it determines "yes" in S101. When the entrapment detection unit 42 detects entrapment, it determines "yes" in S102. The determination in S102 can also be performed before the determination in S101. When both S101 and S102 determine "yes", a report request is sent from the control device 14 to the monitoring device 15 (S103).

[0047] The conditions for sending this report request are not limited to the examples above. Alternatively, the report request may be sent if both S101 and S102 determine "yes" and thus detect that the car 5 is located outside the door zone. The door zone is the area where the door of the landing 31 and the door 21 of the car 5 open and close in conjunction.

[0048] Figure 5 This is a flowchart illustrating an example of the operation of the monitoring device 15. In the monitoring device 15, it is determined whether a report request has been received from the control device 14 (S201). When the monitoring device 15 receives a report request sent from the control device 14 in S103, it is determined to be "yes" in S201. When it is determined to be "yes" in S201, that is, when it is determined to be "yes" in both S101 and S102, the transmitting unit 51 sends a specific first signal to the information center 4 (S202).

[0049] Figure 6 This diagram illustrates the functions of information center 4. Information center 4 includes a communication device 61, a display 62, an input device 63, and a control device 64.

[0050] The intercom device 61 is used for communication between the operator 3 located in the information center 4 and the passenger located in the car 5. The operator 3 communicates with the passenger in the car 5 via the intercom device 61 while simultaneously operating the input device 63 and observing the display 62. As an example, the input device 63 includes a keyboard and a mouse. Other devices may also be included as the input device 63.

[0051] exist Figure 6In the example shown, display 62 shows image A, image B, mode selection bar C, confirmation bar D, execute button E, and stop button F.

[0052] Image A is an image captured by camera 24. By observing image A, operator 3 can understand the situation inside car 5. Image B is an image displayed on monitor 26. By observing image B, operator 3 can understand the image being observed by the passengers inside car 5.

[0053] The mode selection bar C displays the available rescue operation modes. Operator 3 can select one of the rescue operation modes via the operation input device 63. The confirmation bar D displays the items that operator 3 should confirm when executing the selected rescue operation mode. The execute button E is the button pressed by operator 3 to execute the selected rescue operation mode. The stop button F is the button pressed by operator 3 to stop the currently executing rescue operation mode.

[0054] Figure 7 This is a flowchart illustrating an example of the operation of the control device 64. In the control device 64, it is determined whether a first signal has been received from the elevator device 1 (S301). When the control device 64 receives the first signal sent from the monitoring device 15 in S202, it determines "yes" in S301.

[0055] When the determination is "yes" in S301, "brake release" is added to one of the selectable rescue operation modes in control device 64 (S302). Then, control device 64 determines whether "brake release" has been selected (S303). Operator 3 selects "brake release" from the drop-down menu displayed in the operation mode selection bar C. Thus, the determination is "yes" in S303.

[0056] Furthermore, if the control device 64 does not receive the first signal from the elevator device 1, it will not display "Brake Release" in the mode selection bar C, or it will display "Brake Release" as an unselectable option. In the mode selection bar C, "Brake Release" can be selected by the control device 64 receiving the first signal.

[0057] When the determination in S303 is "yes", the control device 64 determines whether the execution button E has been pressed (S304). Operator 3 reads the contents displayed in the confirmation column D, and presses the execution button E (S304 "yes") after performing the necessary actions. For example, before pressing the execution button E, operator 3 conveys the following information to the passengers in the car 5.

[0058] • Release the brakes now to move the car.

[0059] Do not disconnect the call before the door is opened.

[0060] • Be careful of the steps when getting off the elevator.

[0061] If there are people boarding the sedan chair, urge them to disembark.

[0062] When the determination is "yes" in S304, the control device 64 sends a second signal to the elevator device 1 as a response to the first signal (S305).

[0063] like Figure 5 As shown, in the monitoring device 15, when the first signal is sent to the information center 4 in S202, it determines whether a second signal has been received from the information center 4 as a response (S203). When the monitoring device 15 receives the second signal sent from the control device 64 in S305, it determines "yes" in S203. For example, if there is no record of sending the first signal in S202, even if the second signal is received from the control device 64, it does not determine "yes" in S203. When it determines "yes" in S203, the request unit 52 sends a rescue request to the control device 14 (S204). The rescue request may also include the second signal. The request unit 52 may also forward the received second signal to the control device 14 as a rescue request.

[0064] like Figure 3 As shown, in the control device 14, when a report request is sent to the monitoring device 15 in S103, it is determined whether a rescue request has been received from the monitoring device 15 (S104). When the control device 14 receives the rescue request sent from the request unit 52 in S204, it determines "yes" in S104. When it determines "yes" in S104, that is, when the elevator device 1 receives the second signal from the information center 4 as a response to the first signal, the processing execution unit 43 starts the rescue process (S105).

[0065] During the rescue process, firstly, the notification control unit 44 activates the speaker 28 to provide voice guidance to the passenger (S106). For example, in S106, the notification control unit 44 activates the speaker 28 to notify passengers to inform others if they feel anything unusual. The notification control unit 44 may also activate the speaker 28 to provide other information in S106. After the voice guidance ends, the notification control unit 44 may also activate the speaker 28 to emit a warning sound.

[0066] When the voice guidance in S106 ends, the traction machine control unit 45 activates the dynamic braking of the motor 11 (S107). Specifically, in S107, the traction machine control unit 45 short-circuits the terminals of the motor 11. As a result, the motor 11 generates a back electromotive force when the sheave 10 rotates.

[0067] Next, the traction machine control unit 45, while maintaining the dynamic braking of the motor 11, prevents the braking device 13 from operating (S108). Consequently, if the car 5 is lighter than the counterweight 6, the car 5 moves upward. If the car 5 is heavier than the counterweight 6, the car 5 moves downward. As the car 5 moves, the sheave 10 rotates. The rotation of the sheave 10 generates a back electromotive force in the motor 11. Therefore, the speed of the car 5 is suppressed.

[0068] After the brake device 13 is deactivated in S108, the control device 14 determines whether the speed of the car 5 exceeds the reference speed (S109). The reference speed is preset. The speed detection unit 46 detects the speed of the car 5. The speed detection unit 46 detects the speed of the car 5 based on the signal from the encoder 12. After the brake device 13 is deactivated in S108, if the speed detected by the speed detection unit 46 exceeds the reference speed, it is determined to be "yes" in S109. When it is determined to be "yes" in S109, the traction machine control unit 45 activates the brake device 13 (S111). As a result, the car 5 stops.

[0069] Furthermore, after the braking device 13 is deactivated in S108, the control device 14 determines whether a stop request has been received from the monitoring device 15 (S110).

[0070] like Figure 7 As shown, in control device 64, when the second signal is sent to monitoring device 15 in S305, it is determined whether the stop button F has been pressed (S306). For example, operator 3 presses the stop button F (S306 "Yes") when confirming that elevator device 1 has produced an abnormal sound. For another example, operator 3 presses the stop button F (S306 "Yes") when a passenger in car 5 reports an abnormality. When the determination is "Yes" in S306, a third signal is sent from control device 64 to elevator device 1 (S307).

[0071] like Figure 5 As shown, in the monitoring device 15, when a rescue request is sent to the control device 14 in S204, it is determined whether a third signal has been received from the information center 4 (S205). When the monitoring device 15 receives the third signal sent from the control device 64 in S307, it determines "yes" in S205. When it determines "yes" in S205, the request unit 52 sends a stop request to the control device 14 (S206). The stop request may also include the third signal. The request unit 52 may also forward the received third signal as a stop request to the control device 14.

[0072] When the control device 14 receives the stop request sent from the request unit 52 in S206, it determines "yes" in S110. When it determines "yes" in S110, that is, when the elevator device 1 receives the third signal from the information center 4, the traction machine control unit 45 activates the braking device 13 (S111). As a result, the car 5 stops.

[0073] Furthermore, after deactivating the braking device 13 in S108, the control device 14 determines whether the car 5 is positioned in a specific rescue zone (S112). The rescue zone is preset. The position detection unit 47 detects whether the car 5 is positioned in the rescue zone. The rescue zone may be the same as the stopping zone. In this case, the position detection unit 47 detects whether the car 5 is positioned in the rescue zone based on the detection signal from the photoelectric sensor 32. When the position detection unit 47 detects that the car 5 is positioned in the rescue zone after deactivating the braking device 13 in S108, it determines "yes" in S112. When it determines "yes" in S112, the traction machine control unit 45 activates the braking device 13 (S113). As a result, the car 5 stops.

[0074] When the brake device 13 is activated in S113 and the car 5 stops, the door control unit 48 controls the motor 22 to open the door 21 (S114). This allows passengers to disembark from the car 5. Furthermore, when the brake device 13 is activated in S111 and the car 5 stops, the door control unit 48 does not open the door 21.

[0075] When the middle door 21 opens in S114, the control device 14 determines whether the car 5 is unoccupied (S115). The passenger detection unit 49 detects whether the car 5 is unoccupied. The passenger detection unit 49 can also detect whether the car 5 is unoccupied based on the load measured by the weighing device 23. The passenger detection unit 49 can also detect whether the car 5 is unoccupied based on the image captured by the camera 24. When the middle door 21 opens in S114 and the passenger detection unit 49 detects that the car 5 is unoccupied, the rescue operation is terminated (S116).

[0076] In S116, for example, door 21 is closed. Then, the elevator is prohibited from restarting until maintenance personnel arrive on site and perform specific manual operations. Additionally, in S116, a signal indicating the termination of rescue operations can also be sent to information center 4. Therefore, the result is determined as "yes" in S207 and "yes" in S308.

[0077] In the example shown in this embodiment, even if a specific malfunction occurs in the elevator unit 1, such as an inverter or encoder 12 preventing the motor 11 from driving the pulley 10, passengers trapped in the car 5 can be easily rescued by activating the braking device 13. Maintenance personnel do not need to go to the site to rescue passengers. Furthermore, highly skilled operators 3 located in the information center 4 are not required.

[0078] In this embodiment, an example is described where the moving speed of the car 5 is suppressed by effectively controlling the dynamic braking of the motor 11 through the traction machine control unit 45. As another example, the traction machine control unit 45 may also suppress the moving speed of the car 5 by performing braking torque control.

[0079] In this case, the braking device 13 is configured to change the force pressing the guide shoe against the rotating body according to the supplied voltage. Instead of the processes shown in S107 and S108, the traction machine control unit 45 controls the voltage supplied to the braking device 13 while keeping the braking device 13 inactive, thus moving the car 5. Then, when the determination in S112 is "yes", the traction machine control unit 45 sets the voltage supplied to the braking device 13 to 0, causing the braking device 13 to activate (S113). Thus, the braking device 13 prevents the sheave 10 from rotating, stopping the car 5.

[0080] In this embodiment, it is explained that when in Figure 4 The example in S113 is that door 21 opens automatically when car 5 stops. Door 5 can also be opened manually by the passenger in S114.

[0081] In this embodiment, the parts indicated by reference numerals 41 to 49 represent the functions of the control device 14. Figure 8 This diagram illustrates an example of the hardware resources of the control device 14. As hardware resources, the control device 14 has a processing circuit 70 that includes a processor 71 and a memory 72. The control device 14 implements the functions of the parts shown in reference numerals 41 to 49 by executing a program stored in the memory 72 through the processor 71. The memory 72 can be a semiconductor memory or the like.

[0082] Figure 9 This is a diagram showing other examples of the hardware resources of the control device 14. Figure 9 In the example shown, the control device 14 has a processing circuit 70 that includes a processor 71, a memory 72, and dedicated hardware 73. Figure 9This illustrates an example of implementing some of the functions of the control device 14 using dedicated hardware 73. All the functions of the control device 14 can also be implemented using dedicated hardware 73. The dedicated hardware 73 can be a single circuit, a composite circuit, a programmable processor, a parallel programmable processor, an ASIC, an FPGA, or a combination thereof.

[0083] In addition, the hardware resources of the monitoring device 15 and Figure 8 or Figure 9 The example shown is the same. As a hardware resource, the monitoring device 15 has processing circuitry including a processor and memory. The monitoring device 15 implements the functions of the parts shown by reference numerals 51-52 by executing the program stored in the memory by the processor. As a hardware resource, the monitoring device 15 may also have processing circuitry including a processor, memory, and dedicated hardware. Some or all of the functions of the monitoring device 15 may also be implemented by dedicated hardware.

[0084] Hardware resources of control device 64 and Figure 8 or Figure 9 The example shown is the same. As a hardware resource, the control device 64 has processing circuitry including a processor and memory. The control device 64 implements the various functions described above by executing programs stored in memory by the processor. As a hardware resource, the control device 64 may also have processing circuitry including a processor, memory, and dedicated hardware. Some or all of the functions of the control device 64 may also be implemented by dedicated hardware.

[0085] Industrial availability

[0086] This invention can be applied to elevator systems with braking devices that prevent the rotation of the rope pulley.

[0087] Label Explanation

[0088] 1: Elevator system; 2: Network; 3: Operator; 4: Information center; 5: Car; 6: Counterweight; 7: Hoistway; 8: Rope; 9: Traction machine; 10: Sheave; 11: Motor; 12: Encoder; 13: Braking device; 14: Control device; 15: Monitoring device; 16: Machine room; 17: Control cable; 21: Door; 22: Motor; 23: Weighing device; 24: Camera; 25: Control panel; 26: Display; 27: Intercom; 28: Speaker; 29: Button; 31: Floor 32: Station; 33: Photoelectric sensor; 41: Fault detection unit; 42: Trapped detection unit; 43: Processing execution unit; 44: Notification control unit; 45: Traction machine control unit; 46: Speed ​​detection unit; 47: Position detection unit; 48: Door control unit; 49: Passenger detection unit; 51: Sending unit; 52: Request unit; 61: Communication device; 62: Display; 63: Input device; 64: Control device; 70: Processing circuit; 71: Processor; 72: Memory; 73: Dedicated hardware.

Claims

1. An elevator system, the elevator system having: Elevator installation; as well as An operator information center manages the elevator system. The elevator device has: The car; Ropes, which suspend the car; A pulley on which the rope is wound; A motor, which is used to drive the pulley; A braking device that prevents the pulley from rotating when activated; The first detection unit detects specific faults that prevent the motor from driving the pulley. The second detection unit detects whether passengers are trapped in the car. A sending unit that, when the first detection unit detects the specific fault and the second detection unit detects being trapped, sends a specific first signal to the information center where an operator is present. The processing execution unit, upon receiving the second signal from the information center in response to the first signal, begins rescue processing; A first control unit, which, during the rescue operation, prevents the braking device from operating while the dynamic braking of the motor is effective; and The third detection unit detects whether the car is positioned in a specific rescue zone that includes a landing stop position. During the rescue operation, when the third detection unit detects that the car is positioned in the rescue zone, the first control unit activates the braking device. The information center has a display and a control device. Upon receiving the first signal, the control device adds a mode for sending the second signal to the display, as one of the selectable rescue operation modes.

2. The elevator system according to claim 1, wherein, During the rescue operation, when the first control unit receives a specific third signal from the information center after the braking device has been deactivated, the first control unit activates the braking device.

3. The elevator system according to claim 2, wherein, The elevator system also has a second control unit. The car has: loudspeakers; and Walkie-talkies, used for communicating with operators located in the information center. During the rescue operation, before the first control unit deactivates the braking device, the second control unit instructs the speaker to notify the outside if any abnormality is detected.

4. The elevator system according to any one of claims 1 to 3, wherein, The elevator system also has a fourth detection unit for detecting the speed of the car. During the rescue operation, when the speed detected by the fourth detection unit exceeds the reference speed after the braking device is deactivated, the first control unit activates the braking device.

5. The elevator system according to any one of claims 1 to 3, wherein, The elevator system also has a third control unit. The car has a door. During the rescue operation, when the third detection unit detects that the car is positioned in the rescue zone and causes the braking device to activate, the third control unit opens the door.

6. The elevator system according to claim 5, wherein, The elevator system also has a fifth detection unit to detect when the car is unoccupied. During the rescue operation, when the fifth detection unit detects that the car is unoccupied after the third control unit opens the door, the first control unit prohibits the elevator from restarting until a specific manual operation is performed.

7. An elevator system, the elevator system having: Elevator installation; as well as An operator information center manages the elevator system. The elevator device has: The car; Ropes, which suspend the car; A pulley on which the rope is wound; A motor, which is used to drive the pulley; A braking device having a rotating body that rotates in conjunction with the pulley and a guide shoe that contacts and separates from the rotating body, and capable of varying the force pressing the guide shoe against the rotating body according to the supplied voltage; The first detection unit detects specific faults that prevent the motor from driving the pulley. The second detection unit detects whether passengers are trapped in the car. A sending unit that, when the first detection unit detects the specific fault and the second detection unit detects being trapped, sends a specific first signal to the information center where an operator is present. The processing execution unit, upon receiving the second signal from the information center in response to the first signal, begins rescue processing; A first control unit, which, during the rescue operation, moves the car by controlling the voltage supplied to the braking device; and The third detection unit detects whether the car is positioned in a specific rescue zone that includes a landing stop position. During the rescue operation, when the third detection unit detects that the car is positioned in the rescue zone, the first control unit prevents the sheave from rotating via the braking device. The information center has a display and a control device. Upon receiving the first signal, the control device adds a mode for sending the second signal to the display, as one of the selectable rescue operation modes.

Images