Elevator device

Abstract

An elevator device capable of determining the presence or absence of abnormality in a guide rail. An elevator device (1) is provided with a car (15), a guide roller (26), an actuator (28), an acceleration sensor (17), a damping control unit (41), and a first determination unit (43). The vibration damping control unit (41) controls the actuator (28) on the basis of the acceleration detected by the acceleration sensor (17), thereby adjusting the pressing force and performing vibration damping control of the car (15). The first determination unit (43) determines whether or not there is an abnormality in the guide rail (13) on the basis of the value of the current generated in the drive circuit (29) in the second mode in which the damping control is not performed.

Description

Technical Field

[0001] The present invention relates to an elevator device. Background Art

[0002] Patent Document 1 describes an elevator device. The elevator device described in Patent Document 1 includes an actuator that applies pressure to guide rollers toward guide rails. In this elevator device, the actuator vibrates a car to determine whether an acceleration sensor installed in the car has an abnormality.

[0003] Prior art literature

[0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2007-246213 Summary of the Invention

[0005] In the elevator apparatus described in Patent Document 1, although it is possible to determine whether an acceleration sensor provided in the car has an abnormality, it is impossible to determine whether an abnormality exists in the guide rail.

[0006] The present invention has been made to solve the above-mentioned problems. An object of the present invention is to provide an elevator device capable of determining whether or not there is an abnormality in a guide rail.

[0007] The elevator device of the present invention comprises: an elevator car; guide rollers provided in the car, which rotate while in contact with a guide rail when the car moves; an actuator that generates a pressing force for pressing the guide rollers against the guide rails; an acceleration sensor provided in the car; a vibration reduction control unit that controls the actuator based on the acceleration detected by the acceleration sensor, thereby adjusting the pressing force to perform vibration reduction control of the car; and a first determination unit, wherein the vibration reduction control unit is switchable between a first mode in which vibration reduction control is performed and a second mode in which vibration reduction control is not performed. The actuator comprises a circuit that generates an induced current when the guide rollers are displaced horizontally relative to the car in the second mode. The first determination unit determines whether there is an abnormality in the guide rail based on the value of the current generated in the circuit in the second mode.

[0008] Effects of the Invention

[0009] According to the elevator apparatus of the present invention, it is possible to determine whether or not there is an abnormality in the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a diagram showing an example of the elevator apparatus according to the first embodiment.

[0011] Figure 2 Is used to illustrate Figure 1 A diagram showing the function of an elevator device.

[0012] Figure 3 It shows Figure 1 Figure 2 shows the AA section of the image.

[0013] Figure 4 This is a flowchart showing an example of the operation of the elevator apparatus according to the first embodiment.

[0014] Figure 5 This is a flowchart showing another operation example of the elevator apparatus according to the first embodiment.

[0015] Figure 6 This is a flowchart showing another operation example of the elevator apparatus according to the first embodiment.

[0016] Figure 7 This is a flowchart showing a travel example of a car unit in diagnostic operation.

[0017] Figure 8 It is a diagram showing the displacement of the guide roller when the guide rail is deformed.

[0018] Figure 9 It is a diagram showing the displacement of the guide roller when the guide rail is deformed.

[0019] Figure 10 This is a flowchart showing another operation example of the elevator apparatus according to the first embodiment.

[0020] Figure 11 This is a diagram showing an example of hardware resources of a control device.

[0021] Figure 12 This is a diagram showing another example of hardware resources of the control device.

[0022] Description of labels

[0023] 1: Elevator device; 2: Car unit; 3: Counterweight unit; 4: Hoistway; 5: Rope; 6: Traction machine; 7: Control device; 8: Encoder; 9: Communication device; 10: Network; 11: External equipment; 12: Earthquake detector; 13: Guide rail; 13a: Fixing part; 13b: Guide part; 13c-13e: Guide surface; 15: Car; 16: Guide unit; 17: Acceleration sensor; 18: Weighing device; 19: Control device; 21: Car room ; 22: Car frame; 23: Elastic body; 25: Support component; 26: Guide roller; 27: Shaft; 28: Actuator; 29: Drive circuit; 30: Storage unit; 31: Operation control unit; 32: Report control unit; 33: Notification control unit; 40: Storage unit; 41: Vibration reduction control unit; 42: Acquisition unit; 43: First determination unit; 44: Second determination unit; 45: Communication unit; 50: Processing circuit; 51: Processor; 52: Memory; 53: Dedicated hardware. DETAILED DESCRIPTION

[0024] The following is a detailed description with reference to the accompanying drawings. Repetitive descriptions are appropriately simplified or omitted. In each figure, the same reference numerals represent the same parts or corresponding parts.

[0025] Implementation method 1.

[0026] Figure 1 This is a diagram showing an example of the elevator apparatus 1 according to the first embodiment. Figure 2 Is used to illustrate Figure 1 The diagram shows the functions of an elevator device 1. The elevator device 1 includes a car unit 2 and a counterweight unit 3. The car unit 2 moves up and down in a hoistway 4. The hoistway 4 is a vertically extending space formed in a building. For example, each floor of the building is provided with a landing where the car unit 2 can stop. The car unit 2 and the counterweight unit 3 are suspended in the hoistway 4 by ropes 5. Figure 1 As an example, an elevator apparatus 1 using a 1:1 roping system is shown.

[0027] The rope 5 is wound around the drive sheave of the hoisting machine 6. The hoisting machine 6 is controlled by a control device 7. When the drive sheave of the hoisting machine 6 rotates, the rope 5 moves in the direction corresponding to the direction of rotation of the drive sheave. The car unit 2 moves upward or downward in the hoistway 4 according to the direction of movement of the rope 5. The counterweight unit 3 moves in the direction opposite to the direction of movement of the car unit 2. The hoisting machine 6 is an example of a device that drives the car unit 2. The movement of the car unit 2 is controlled by the control device 7.

[0028] The hoisting machine 6 includes an encoder 8. The encoder 8 outputs a rotation signal corresponding to the rotation direction and rotation angle of the drive sheave. The rotation signal output from the encoder 8 is input to the control device 7. The control device 7 can detect the position of the car unit 2 based on the rotation signal from the encoder 8. The encoder can also be provided in the speed governor.

[0029] The communication device 9 is connected to the control device 7. The communication device 9 communicates with an external device 11 via a network 10. The external device 11 may be a server device managed by a maintenance center of the elevator device 1. The network 10 may be the Internet.

[0030] The elevator device 1 may also include an earthquake detector 12. The earthquake detector 12 may also be disposed inside the hoistway 4. The earthquake detector 12 outputs a detection signal when detecting a preset acceleration. The earthquake detector 12 may also output a detection signal of multiple levels. For example, the detection signal from the earthquake detector 12 is input to the control device 7 via the communication device 9.

[0031] The car unit 2 includes a car 15 , a guide unit 16 , an acceleration sensor 17 , a weighing device 18 , and a control device 19 . The car 15 includes a car chamber 21 , a car frame 22 , and an elastic body 23 .

[0032] A space for users to sit in is formed in the car chamber 21. The car frame 22 has a square frame shape as a whole and is arranged so as to surround the car chamber 21 from top to bottom and left to right. The car chamber 21 is supported by the car frame 22 via an elastic body 23.

[0033] The guide unit 16 is provided on the car 15 . Figure 1 The example in which the guide unit 16 is provided on the car frame 22 is shown. The guide unit 16 is a device for guiding the movement of the car unit 2. In the hoistway 4, a pair of guide rails 13 are provided over the range of movement of the car unit 2. The car unit 2 moves up and down while the guide unit 16 is in contact with the guide rails 13.

[0034] The car unit 2 is arranged between the pair of guide rails 13 in a plan view. Figure 1 The example in which the guide unit 16 is provided at four locations of the upper, lower, left, and right sides of the car frame 22 is shown. Figure 1 In the example shown, the upper right guide unit 16 and the lower right guide unit 16 are arranged to face one guide rail 13 , and the upper left guide unit 16 and the lower left guide unit 16 are arranged to face the other guide rail 13 .

[0035] Figure 3 It shows Figure 1 Figure AA section of the diagram. Figure 3 As shown, the guide rail 13 includes a fixing portion 13a and a guide portion 13b. The fixing portion 13a is fixed to the structure of the hoistway 4 by means of fixing members such as clips and brackets. The guide portion 13b is provided on the fixing portion 13a so as to protrude toward the other side of the guide rail 13. The guide portion 13b is formed with a guide surface 13c, a guide surface 13d, and a guide surface 13e for guiding the car unit 2.

[0036] The guide surface 13c, the guide surface 13d, and the guide surface 13e are each a vertical flat surface. The guide surface 13c is a surface parallel to the depth direction (Y axis) of the car 15 and is a surface perpendicular to the door surface direction (X axis) of the car 15. In addition, the X axis and the Y axis are horizontal axes, which are perpendicular to each other. The guide surface 13c is configured to face the other guide rail 13. The guide surface 13d and the guide surface 13e are each a surface parallel to the door surface direction (X axis) of the car 15 and is perpendicular to the depth direction (Y axis) of the car 15. The guide surface 13d and the guide surface 13e are configured to face opposite directions to each other.

[0037] The guide unit 16 includes a support member 25 (see Figure 1), guide roller 26, shaft 27 and actuator 28. The support member 25 is provided on the car 15. The guide roller 26, shaft 27 and actuator 28 are supported by the support member 25. That is, the guide roller 26, shaft 27 and actuator 28 are provided on the car 15 via the support member 25.

[0038] Figure 3 The example in which the guide unit 16 includes three sets of guide rollers 26, shafts 27, and actuators 28 is shown. Figure 3 As shown, the guide roller 26, the shaft 27, and the actuator 28 are respectively denoted by α to γ ​​after the reference numerals, and components included in the same group are clearly shown.

[0039] The guide roller 26α is supported on the support member 25 so as to be rotatable about an axis 27α parallel to the Y-axis. The guide roller 26α is arranged so that its outer peripheral surface faces the guide surface 13c. The guide roller 26α is constantly biased toward the guide surface 13c by an elastic member such as a spring (not shown). Therefore, the outer peripheral surface of the guide roller 26α is in contact with the guide surface 13c. When the car 15 is moved by the traction machine 6, the guide roller 26α rotates while in contact with the guide surface 13c.

[0040] The guide roller 26α is supported by the support member 25 so as to be displaceable horizontally relative to the car 15. Specifically, the guide roller 26α is displaceable relative to the car 15 in a direction parallel to the X-axis. The actuator 28α generates a pressing force to press the guide roller 26α against the guide surface 13c of the guide rail 13. As an example, the actuator 28α is a voice coil motor (VCM) and includes a drive circuit 29α. The actuator 28α generates a pressing force corresponding to the current flowing through the drive circuit 29α.

[0041] The guide roller 26β is supported on the support member 25 so as to be rotatable about an axis 27β parallel to the X-axis. The guide roller 26β is arranged so that its outer peripheral surface faces the guide surface 13d. The guide roller 26β is constantly biased toward the guide surface 13d by an elastic member such as a spring (not shown). Therefore, the outer peripheral surface of the guide roller 26β contacts the guide surface 13d. When the car 15 is moved by the hoisting machine 6, the guide roller 26β rotates while in contact with the guide surface 13d.

[0042] The guide roller 26β is supported on the support member 25 so as to be displaceable horizontally relative to the car 15. Specifically, the guide roller 26β is displaceable relative to the car 15 in a direction parallel to the Y-axis. The actuator 28β generates a pressing force to press the guide roller 26β against the guide surface 13d of the guide rail 13. As an example, the actuator 28β is a voice coil motor (VCM) and includes a drive circuit 29β. The actuator 28β generates a pressing force corresponding to the current flowing through the drive circuit 29β.

[0043] The guide roller 26γ is supported on the support member 25 so as to be rotatable about an axis 27γ parallel to the X-axis. The guide roller 26γ is arranged so that its outer peripheral surface faces the guide surface 13e. The guide roller 26γ is constantly biased toward the guide surface 13e by an elastic member such as a spring (not shown). Therefore, the outer peripheral surface of the guide roller 26γ contacts the guide surface 13e. When the car 15 is moved by the hoisting machine 6, the guide roller 26γ rotates while in contact with the guide surface 13e.

[0044] The guide roller 26γ is supported on the support member 25 so as to be displaceable horizontally relative to the car 15. Specifically, the guide roller 26γ is displaceable relative to the car 15 in a direction parallel to the Y-axis. The actuator 28γ generates a pressing force to press the guide roller 26γ against the guide surface 13e of the guide rail 13. As an example, the actuator 28γ is a voice coil motor (VCM) and includes a drive circuit 29γ. The actuator 28γ generates a pressing force corresponding to the current flowing through the drive circuit 29γ.

[0045] In addition, each guide unit 16 has the same structure. As another example, each guide unit 16 may include only the actuator 28α as the actuator 28.

[0046] The acceleration sensor 17 is provided on the car 15. The acceleration sensor 17 detects horizontal acceleration generated in the car 15. For example, the acceleration sensor 17 detects acceleration in a direction parallel to the X-axis. The acceleration sensor 17 detects acceleration in a direction parallel to the Y-axis. The acceleration sensor 17 outputs an acceleration signal corresponding to the horizontal acceleration of the car 15. The acceleration signal output from the acceleration sensor 17 is input to the control device 19.

[0047] The weighing device 18 is provided on the car 15. The weighing device 18 measures the load carried by the car 15. The weighing device 18 outputs a weighing signal corresponding to the load carried by the car 15. The weighing signal output from the weighing device 18 is input to the control device 7.

[0048] The control device 19 is provided in the car 15 . Figure 1 The example in which the control device 19 is installed above the car chamber 21 is shown. Power to the control device 19 is supplied from the control device 7 via a cable (not shown). The control device 19 includes a storage unit 40, a vibration reduction control unit 41, an acquisition unit 42, a first determination unit 43, a second determination unit 44, and a communication unit 45.

[0049] like Figure 2As shown, the control device 7 includes a storage unit 30, an operation control unit 31, a report control unit 32, and a notification control unit 33. The operation control unit 31 controls each operation mode. The operation modes controlled by the operation control unit 31 include normal operation, diagnostic operation, and earthquake control operation.

[0050] Normal operation is an operation in which the car unit 2, i.e., the car 15, sequentially responds to registered calls. During normal operation, users can register a call and travel from one floor to another in the car 15. Diagnostic operation is an operation for automatically diagnosing whether there are any abnormalities in the guide rails 13. Earthquake control operation is an operation for stopping the car unit 2 at the nearest floor immediately after an earthquake, allowing users in the car 15 to evacuate.

[0051] Next, refer to Figures 4 to 9 , the functions of the elevator device 1 are described in detail. Figure 4 This is a flowchart showing an operation example of the elevator apparatus 1 according to the first embodiment. Figure 4 The following shows the operation flow of the control device 19 during normal operation.

[0052] The control device 19 determines whether normal operation is in progress (S101). If normal operation is in progress by the operation control unit 31, the determination in S101 is "Yes." If the determination in S101 is "Yes," the vibration reduction control unit 41 performs vibration reduction control of the car 15 (S102).

[0053] As described above, the actuator 28 generates a pressing force for pressing the guide roller 26 against the guide rail 13. The vibration reduction control unit 41 controls the actuator 28 to adjust this pressing force and perform vibration reduction control to suppress vibrations generated in the car 15. The vibration reduction control unit 41 controls the actuator 28 based on the horizontal acceleration detected by the acceleration sensor 17. For example, the vibration reduction control unit 41 converts the acceleration signal from the acceleration sensor 17 into a current control signal for the drive circuit 29, thereby operating the actuator 28 to offset the vibrations generated in the car 15.

[0054] In the example shown in this embodiment, actuator 28α is controlled based on the acceleration in the direction parallel to the X axis detected by acceleration sensor 17. Actuators 28β and 28γ are controlled based on the acceleration in the direction parallel to the Y axis detected by acceleration sensor 17.

[0055] The vibration reduction control unit 41 can be switched between a first mode in which vibration reduction control is performed and a second mode in which vibration reduction control is not performed. Figure 4As shown in FIG. 1 , if the normal operation is being performed by the operation control unit 31, the mode is switched to the first mode. Thus, vibration reduction control for improving the riding comfort is performed.

[0056] Figure 5 and Figure 6 This is a flowchart showing another operation example of the elevator apparatus 1 according to the first embodiment. Figure 5 The following shows the operation flow of the control device 7 during the diagnostic operation. Figure 6 The following shows the operation flow of the control device 19 during the diagnostic operation.

[0057] In the control device 7, it is determined whether the start condition is met (S201). The start condition is a condition for starting the diagnostic operation. As an example, the start condition is met when it is late at night on a specific day of the week. This example is a condition for performing diagnostic operation regularly. Alternatively, the start condition is met when the communication device 9 receives a specific signal such as a recovery investigation instruction from the external device 11. Alternatively, the start condition is met under other circumstances. When the start condition is met, it is determined as "yes" in S201. When it is determined as "yes" in S201, the operation control unit 31 starts the diagnostic operation (S202).

[0058] Figure 7 This is a flowchart showing a travel example of the car unit 2 during the diagnostic operation.

[0059] When the diagnostic operation starts, first, it is determined whether the car unit 2 has stopped (S401). As an example, the determination of S401 is performed based on the rotation signal from the encoder 8. If the car unit 2 has stopped, it is determined as "yes" in S401. When it is determined as "yes" in S401, it is determined whether there is anyone in the car 15 (S402). As an example, the determination of S402 is performed based on the weighing signal from the weighing device 18. If there is no one in the car 15, it is determined as "no" in S402.

[0060] If "yes" is determined in S401 and "no" is determined in S402, the operation control section 31 causes the car unit 2 to travel at the first speed and stop at the lowest landing (S403). As an example, the first speed is the same speed as the speed at which the car unit 2 travels during normal operation.

[0061] Next, the operation control section 31 causes the car unit 2 to travel at a second speed and stop at the uppermost landing (S404). As an example, the second speed is a speed slower than the first speed.

[0062] Next, the operation control unit 31 causes the car unit 2 to travel at the first speed and stop at the lowest landing (S405). In the diagnostic operation, the travel of the car unit 2 may be terminated in S404. During the travel shown in S403 to S405, the door may remain closed.

[0063] Meanwhile, the control device 19 determines whether the diagnostic operation has started (S301). If the diagnostic operation has started in S202, the determination in S301 is "Yes." If the determination in S301 is "Yes," the control unit 41 switches to the second mode (S302) in which vibration reduction control is not performed. Specifically, if the determination in S301 is "Yes," the vibration reduction control unit 41 disables vibration reduction control.

[0064] As described above, the actuator 28 is, for example, a voice coil motor. Therefore, in the second mode, when the guide roller 26 moves horizontally relative to the car 15, an induced current is generated in the drive circuit 29. When the second mode is switched in S302, the acquisition unit 42 acquires the value of the current generated in the drive circuit 29 (S303). Information indicating the current value acquired by the acquisition unit 42 (hereinafter also referred to as current value information) is stored in the storage unit 40.

[0065] Figure 8 and Figure 9 It is a diagram showing the displacement of the guide roller 26 when the guide rail 13 is deformed. Figure 8 FIG. 1 shows an example in which the guide rail 13 is deformed in the X-axis direction. Figure 8 As shown, when the guide rail 13 deforms in the X-axis direction, the guide roller 26α moves in accordance with the deformation. Therefore, if the second mode is switched, when the guide roller 26α passes through the deformed portion, an induced current is generated in the drive circuit 29α of the actuator 28α.

[0066] same, Figure 9 FIG. 1 shows an example in which the guide rail 13 is deformed in the Y-axis direction. Figure 9 As shown in FIG. 1 , when the guide rail 13 deforms in the Y-axis direction, the guide rollers 26β and 26γ follow the deformation and move. Therefore, when the second mode is switched, when the guide rollers 26β and 26γ pass through the deformed portion, an induced current is generated in the drive circuits 29β and 29γ of the actuators 28β and 28γ.

[0067] When the second mode is switched in S302 , the acquisition unit 42 may further acquire the acceleration detected by the acceleration sensor 17 ( S304 ). Information indicating the acceleration acquired by the acquisition unit 42 (hereinafter also referred to as acceleration information) is stored in the storage unit 40 .

[0068] The acquisition unit 42 may further acquire information indicating the position of the car unit 2 (hereinafter also referred to as position information) from the control device 7. In this case, the position information is stored in the storage unit 40 in association with the current value information. When the process shown in S304 is performed, the position information is stored in the storage unit 40 in association with the acceleration information.

[0069] Furthermore, the acquisition unit 42 continuously acquires the current value, the acceleration, and the position information at least from the time the car unit 2 exits the lowest floor until it reaches the highest floor in S404. Alternatively, the acquisition may also continue from the time the car unit 2 exits the highest floor until it reaches the lowest floor in S405.

[0070] The first determination unit 43 determines whether there is an abnormality in the guide rail 13 based on the current value acquired by the acquisition unit 42 in S303, that is, the value of the induced current generated in the drive circuit 29 in the second mode (S305). For example, if the current value acquired by the acquisition unit 42 in S303 is outside the first reference range, the first determination unit 43 determines that there is an abnormality in the current value, that is, an abnormality in the guide rail 13. The first reference range for determining whether there is an abnormality in the current value is preset.

[0071] As an example, immediately after the elevator apparatus 1 is installed, an operation similar to this diagnostic operation is performed to obtain the value of the induced current generated in the drive circuit 29 during the second mode. The first reference range may be set based on the value obtained during this operation. Alternatively, when the acquisition unit 42 acquires the value of the current generated in the drive circuit 29 and the position information of the car unit 2, the first reference range may be set taking into account this position information. For example, consider a case in which, during operation immediately after the elevator apparatus 1 is installed, the current value at a point 1000 mm from the lowest floor is 100 mA. In this case, assuming that the normal range is ±50 mA, the first reference range at this point is set to 50 mA to 150 mA.

[0072] If the first determination unit 43 determines that the guide rail 13 has an abnormality, the determination in S305 is "Yes." If the determination in S305 is "Yes," the communication unit 45 transmits a first abnormality occurrence signal to the control device 7 (S306). The first abnormality occurrence signal indicates that the guide rail 13 has an abnormality based on the value of the induced current.

[0073] The second determination unit 44 determines whether there is an abnormality in the guide rail 13 based on the acceleration acquired by the acquisition unit 42 in S304 (S307). For example, if the acceleration acquired by the acquisition unit 42 in S304 is outside the second reference range, the second determination unit 44 determines that there is an acceleration abnormality, that is, an abnormality in the guide rail 13. The second reference range for determining whether there is an acceleration abnormality is preset.

[0074] As an example, immediately after the elevator device 1 is installed, an operation similar to the present diagnostic operation is performed, and the acceleration detected by the acceleration sensor 17 is obtained. The second reference range may be set based on the acceleration obtained during this operation. Alternatively, when the acquisition unit 42 acquires the acceleration detected by the acceleration sensor 17 and the position information of the car unit 2, the second reference range may be set taking into account the position information. For example, consider that during operation immediately after the elevator device 1 is installed, the acceleration in the Y-axis direction at a point 2000 mm from the lowest floor is +5 cm / s. 2 In this case, the normal range is ±10cm / s 2 The second reference range in the Y-axis direction at that location is set to -5 cm / s 2 ~+15cm / s 2 .

[0075] If the second determination unit 44 determines that the guide rail 13 has an abnormality, a "Yes" determination is made in S307. If the determination in S307 is "Yes," the communication unit 45 transmits a second abnormality occurrence signal to the control device 7 (S308). The second abnormality occurrence signal indicates that the guide rail 13 has an abnormality determined based on the acceleration.

[0076] Repeat the process from S303 to S308 until Figure 7 As another example, the processing shown in S305 to S308 may be performed until the travel of the car unit 2 is completed. Figure 7 This is performed after the travel of the car unit 2 shown is completed, that is, after the acquisition of all data is completed.

[0077] Furthermore, when the diagnostic operation is started in S202, the control device 7 determines whether the first abnormality occurrence signal is received from the control device 19 (S203). If the control device 7 receives the first abnormality occurrence signal transmitted by the communication unit 45 in S306, the determination in S203 is "Yes".

[0078] If the determination in S203 is "YES," the receipt of the first abnormality occurrence signal is recorded (S204). For example, information about the current value outside the first reference range is associated with information about the location where the current value was detected and stored in the storage unit 30. Furthermore, if the determination in S203 is "YES," the notification control unit 32 notifies the external device 11 via the communication device 9 that an abnormality has occurred in the guide rail 13, i.e., that the abnormality has been detected based on the current value (S204).

[0079] When the process shown in S304 is performed by the control device 19, the control device 7, when the diagnostic operation is started in S202, determines whether the second abnormality occurrence signal is received from the control device 19 (S205). If the control device 7 receives the second abnormality occurrence signal transmitted by the communication unit 45 in S308, the determination in S205 is "YES".

[0080] If the determination in S205 is "yes," the receipt of the second abnormality occurrence signal is recorded (S206). For example, acceleration information exceeding the second reference range is associated with the position information at which the acceleration was detected and stored in the storage unit 30. Furthermore, if the determination in S205 is "yes," the notification control unit 32 notifies the external device 11 via the communication device 9 that an abnormality has occurred in the guide rail 13, i.e., that the abnormality has been detected based on the acceleration (S206).

[0081] Repeat the process from S203 to S206 until Figure 7 As another example, the processing shown in S203 to S206 may be performed until the travel of the car unit 2 is completed. Figure 7 This is performed after the travel of the car unit 2 shown is completed, that is, after the acquisition of all data is completed.

[0082] when Figure 7 When the travel of the indicated car unit 2 is completed, it is determined as "Yes" in S207. When it is determined as "Yes" in S207, the operation control section 31 ends the diagnostic operation (S208).

[0083] Alternatively, in the control device 19, when Figure 7 When the travel of the car unit 2 is completed and a "yes" determination is made in S309, the second mode is switched to the first mode at that moment. That is, the vibration reduction control section 41 may enable the vibration reduction control at that moment when a "yes" determination is made in S309.

[0084] In the example shown in this embodiment, the first determination unit 43 determines whether or not there is an abnormality in the guide rail 13 based on the value of the induced current generated in the drive circuit 29 during the second mode. Therefore, in the elevator apparatus 1 including the so-called capstan guide including the actuator 28, it is possible to determine whether or not there is an abnormality in the guide rail 13.

[0085] In the example shown in this embodiment, the deformation of the guide rail 13 can be detected by the driving circuit 29 for generating the pressing force, so there is no need to provide a special sensor just for detecting an abnormality of the guide rail 13. Therefore, the presence or absence of an abnormality of the guide rail 13 can be determined with a simple structure.

[0086] Figure 10 This is a flowchart showing another operation example of the elevator apparatus 1 according to the first embodiment. Figure 10 The following shows the operation flow of the control device 7 during earthquake control operation.

[0087] In the control device 7, it is determined whether an earthquake has occurred (S501). If the occurrence of an earthquake is detected, that is, a detection signal is input from the earthquake detector 12, the determination in S501 is "yes". If the determination in S501 is "yes", the operation control unit 31 starts the earthquake control operation (S502).

[0088] When the earthquake control operation starts, first, it is determined whether the car unit 2 is parked in the door zone (S503). The door zone is the range in which the door can be opened and closed. As an example, the determination of S503 is performed based on the rotation signal from the encoder 8. For example, if the car unit 2 has parked at a certain floor station, it is determined as "yes" in S503. When it is determined as "yes" in S503, the operation control unit 31 does not move the car unit 2, but opens and closes the door for users to get off the elevator (S512). After the door is closed in S512, the earthquake control operation ends (S513).

[0089] When it is determined as "No" in S503, the operation control unit 31 causes the car unit 2 to travel toward the nearest floor on one side at the third speed (S504). As an example, the third speed is a speed slower than the first speed. At this time, the operation control unit 31 may cause the car unit 2 to travel toward the nearest floor above, or may cause the car unit 2 to travel toward the nearest floor below. The operation control unit 31 may also cause the car unit 2 to travel toward the floor that is closer between the nearest floor above and the nearest floor below. The operation control unit 31 may also cause the car unit 2 to travel toward the floor of the nearest floor above and the nearest floor below, in which the car unit 2 moves away from the counterweight unit 3. In the following, an example in which the car unit 2 starts traveling toward the nearest floor above in S504 is described.

[0090] In the control device 19, Figure 6 The same process as shown in FIG. Figure 6 The processing different from the processing shown will be described in detail.

[0091] In S301, it is determined whether the earthquake control operation has started. When the earthquake control operation has started in S502, it is determined as "yes" in S301. When it is determined as "yes" in S301, it switches to the second mode (S302) in which vibration reduction control is not performed. After switching to the second mode in S302, the control device 19 performs the same operation as in the first operation. Figure 6 The same processing as that shown in S303 to S309.

[0092] When travel toward the nearest floor above begins in S504, the control device 7 determines whether a first abnormality occurrence signal has been received from the control device 19 (S505). Furthermore, it determines whether a second abnormality occurrence signal has been received from the control device 19 (S506). If the first determination unit 43 determines in S305 that an abnormality exists in the guide rail 13 while the car unit 2 is traveling toward the nearest floor above, the determination in S505 is "Yes." Similarly, if the second determination unit 44 determines in S307 that an abnormality exists in the guide rail 13, the determination in S506 is "Yes."

[0093] Furthermore, when travel to the nearest upper floor begins in S504, the control device 7 determines whether the car unit 2 has stopped at the nearest upper floor (S507). If the car unit 2 is not determined to be "yes" in either S505 or S506 and is about to stop at the nearest upper floor, a "yes" determination is made in S507. If the determination in S507 is "yes," the operation control unit 31 opens and closes the door to allow the user to disembark (S512). After the door is closed in S512, the earthquake control operation ends (S513).

[0094] If the determination result in S505 or S506 is "Yes", the operation control unit 31 stops the car unit 2 (S508). If the determination result in S505 is "Yes", the same processing as the recording processing performed in S204 is performed. If the determination result in S506 is "Yes", the same processing as the recording processing performed in S206 is performed.

[0095] When the car unit 2 stops in S508, during earthquake control operation, it is determined whether the travel direction of the car unit 2 has been reversed (S509). If the process of reversing the travel direction has not been performed after the start of earthquake control operation in S502, the determination in S509 is "No". If the determination in S509 is "No", the operation control unit 31 reverses the travel direction of the car unit 2 (S510). In this case, the operation control unit 31 causes the car unit 2 to travel toward the nearest floor below.

[0096] When the direction of travel is reversed in S510 and the car unit 2 begins traveling toward the nearest floor below, the processes shown in S505 to S508 are performed. For example, if the car unit 2 is about to stop at the nearest floor below, but neither S505 nor S506 result in a "yes" determination, then a "yes" determination is made in S507. If the determination in S507 is "yes," the operation control unit 31 opens and closes the door to allow the user to disembark (S512). After the door is closed in S512, the earthquake control operation ends (S513).

[0097] When it is determined as "yes" in S505 or S506 when the car unit 2 is traveling toward the nearest floor below, the operation control unit 31 stops the car unit 2 (S508). In this case, it is determined as "yes" in S509. When it is determined as "yes" in S509, the reporting control unit 32 reports to the external device 11 via the communication device 9 that an abnormality has occurred in the guide rail 13 (S511). Alternatively, when it is determined as "yes" in S505, it is reported in S511 that an abnormality has occurred in the guide rail 13 based on the current value. Alternatively, when it is determined as "yes" in S506, it is reported in S511 that an abnormality has occurred in the guide rail 13 based on the acceleration.

[0098] Alternatively, when the determination in S509 is "Yes," the notification control unit 33 may notify the car 15 that an abnormality has occurred in the guide rail 13. For example, when the determination in S509 is "Yes," the notification control unit 33 may display on a display in the car 15 that the car is no longer able to travel due to an abnormality in the guide rail 13. The notification in S511 may also be made through a voice announcement.

[0099] Then, the earthquake control operation ends (S513). In this case, the rescue of the user riding in the car 15 is performed by the elevator maintenance personnel.

[0100] Alternatively, when the earthquake control operation ends in S513 due to a "Yes" determination in S507, the above-mentioned diagnostic operation may be automatically performed thereafter, or the above-mentioned diagnostic operation may be performed upon receipt of a restoration investigation instruction from the external device 11.

[0101] The first determination unit 43 can determine the presence or absence of an abnormality based solely on, for example, the value of the induced current from the lower guide unit 16. However, when earthquake control operations are in progress, it is preferable that this determination be made based on the value of the induced current from the upper guide unit 16 during at least ascent, and based on the value of the induced current from the lower guide unit 16 during descent.

[0102] Figure 111 is a diagram showing an example of hardware resources of the control device 19. The control device 19 includes a processing circuit 50 including a processor 51 and a memory 52 as hardware resources. The processing circuit 50 may include a plurality of processors 51. The processing circuit 50 may also include a plurality of memories 52.

[0103] In this embodiment, the components 40 to 45 represent functions of the control device 19. The functions of the storage unit 40 are implemented by the memory 52. ​​The functions of the components 41 to 45 can be implemented by software, firmware, or a combination of software and firmware described as a program. This program is stored in the memory 52. ​​The control device 19 implements the functions of the components 41 to 45 by executing the program stored in the memory 52 via the processor 51 (computer).

[0104] Processor 51 is also known as a CPU (Central Processing Unit), central processing unit, processing unit, computing unit, microprocessor, microcomputer, or DSP. Memory 52 may also be a semiconductor memory, a magnetic disk, a floppy disk, an optical disk, a CD (compact disk), a mini disc, or a DVD (Digital Versatile Disk). Examples of semiconductor memories include RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), and EEPROM (Electrically Erasable Programmable Read Only Memory).

[0105] Figure 12 FIG. 1 is a diagram showing another example of hardware resources of the control device 19. Figure 12 In the illustrated example, the control device 19 includes a processing circuit 50 including a processor 51 , a memory 52 , and dedicated hardware 53 . Figure 12The example in which a portion of the functions of the control device 19 are implemented by dedicated hardware 53 is shown. Alternatively, all functions of the control device 19 may be implemented by dedicated hardware 53. Dedicated hardware 53 may be a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof.

[0106] The hardware resources of the control device 7 and Figure 11 or Figure 12 The example shown is the same. The control device 7 has a processing circuit including a processor and a memory as a hardware resource. The processing circuit may also include multiple processors. The processing circuit may also include multiple memories. The function of the storage unit 30 is implemented by the memory. The control device 7 implements the functions of the various parts shown by labels 31 to 33 by executing the program stored in the memory by the processor (computer). The control device 7 may also have a processing circuit including a processor, a memory and dedicated hardware as a hardware resource. It is also possible to implement part or all of the functions of the control device 7 by dedicated hardware.

Claims

1. An elevator device, wherein: The elevator device comprises: an elevator car; a guide roller provided on the car, wherein when the car moves, the guide roller rotates while in contact with the guide rail; an actuator that generates a pressing force for pressing the guide roller against the guide rail; an acceleration sensor, which is arranged in the car; a vibration reduction control unit for controlling the actuator according to the acceleration detected by the acceleration sensor to adjust the pressing force and perform vibration reduction control of the car; as well as First Judgment Section, The vibration damping control unit is switchable between a first mode in which the vibration damping control is performed and a second mode in which the vibration damping control is not performed. The actuator includes a circuit that generates an induced current when the guide roller is displaced in the horizontal direction relative to the car in the second mode. The first determination unit determines whether or not there is an abnormality in the guide rail based on a value of a current generated in the electric circuit in the second mode.

2. The elevator device according to claim 1, wherein: The elevator apparatus further includes a second determination unit configured to determine whether or not there is an abnormality in the guide rail based on the acceleration detected by the acceleration sensor in the second mode.

3. The elevator device according to claim 1 or 2, wherein: The elevator device further includes an operation control unit for controlling normal operation and earthquake control operation, wherein the normal operation is an operation for causing the car to respond to a registered elevator call, and the earthquake control operation is an operation for causing the car to stop at the nearest floor immediately after an earthquake occurs. The mode is switched to the first mode during the normal operation, and is switched to the second mode when the earthquake control operation starts.

4. The elevator device according to claim 3, wherein: When the operation control unit detects the occurrence of an earthquake during the earthquake control operation, the operation control unit causes the car to move toward one of the nearest floor above and the nearest floor below. When the first determination unit determines that there is an abnormality in the guide rail while the car is moving toward said one side, the operation control unit causes the car to move toward the other of the nearest floor above and the nearest floor below.

5. The elevator device according to claim 4, wherein: The elevator apparatus further includes a notification control unit configured to notify that an abnormality has occurred when the first determination unit determines that an abnormality has occurred in the guide rail while the car is traveling toward the other direction.

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