JP6585151B2 - Elevator apparatus and diagnostic method - Google Patents

Description

  Embodiments described herein relate generally to an elevator apparatus and a diagnostic method.

  In the elevator apparatus, when a building shakes due to an earthquake or the like, the car is guided to the nearest floor and the door is opened by the earthquake control operation apparatus. An elevator apparatus provided with an earthquake control operation apparatus includes an acceleration sensor for detecting shaking of a building or a car. The acceleration sensor is provided, for example, in a machine room or a car located on the upper floor of a building.

  In this type of elevator apparatus, automatic diagnosis operation is performed as necessary when an earthquake stops, and automatic diagnosis operation for damage or malfunction of elevator equipment is performed. From the viewpoint of safety, the automatic diagnosis operation is performed when the output from the acceleration sensor when an earthquake occurs is below a predetermined reference value. This reference value is set based on the proof stress limit of the equipment that constitutes the elevator apparatus, and when the output from the acceleration sensor exceeds the reference value even once, an inspection operation by an operator is performed.

  However, when an acceleration sensor is installed in a machine room of a building or the like, the detected acceleration detected by the acceleration sensor and the actual acceleration of the car are different when the acceleration sensor and the car are located away from each other. May be a value. In particular, when the building is tall, the detected acceleration greatly deviates from the actual acceleration of the car. For this reason, the reference value for determining whether or not to perform the inspection work by the worker is determined with some allowance. Therefore, even when it is not necessary to perform a time-consuming inspection work, it is determined that the inspection work needs to be performed, and as a result, the restoration of the elevator apparatus may be delayed.

  Further, when the acceleration sensor is installed in a car, a counterweight, or the like, it is possible to detect the acceleration of the moving body itself such as a car. However, if the reference value is not set appropriately, similarly, even if it is not necessary to carry out the inspection work, it is determined that the inspection work needs to be carried out, and it takes a long time to restore the elevator apparatus. It can happen.

Japanese Patent No. 5706811

  This invention makes it a subject to restore | restore an elevator apparatus at an early stage.

In order to solve the above-described problem, the elevator apparatus according to the present embodiment detects a horizontal acceleration of a moving body that is provided on the moving body that moves up and down the hoistway along the rail, and that has been stopped by the earthquake. a sensor, the detection result of the sensor, if less than the reference value determined using design horizontal seismic intensity, the moving body is moved up and down is determined that it is possible to diagnose operation for performing abnormality diagnosis, detection result of the sensor However, it is provided with a judging means for judging that the diagnostic operation is impossible when it is equal to or larger than the reference value .

It is a perspective view of the elevator apparatus which concerns on this embodiment. It is a figure which shows a guide rail, a cage | basket | car, and a counterweight typically. It is a block diagram which shows the control system of an elevator apparatus. It is a block diagram of a control unit. It is a flowchart showing a series of processes which CPU performs. It is a figure which shows an example of a voltage signal. It is a figure which shows an example of action force. It is a figure which shows arrangement | positioning of a relay antenna. It is a figure which shows the elevator apparatus and management center which are connected to a network.

  Hereinafter, the present embodiment will be described with reference to the drawings. In the description, an XYZ coordinate system including an X axis, a Y axis, and a Z axis that are orthogonal to each other is used as appropriate.

  FIG. 1 is a perspective view of an elevator apparatus 10 according to the present embodiment. The elevator apparatus 10 is disposed inside a hoistway 100 provided in a building such as a condominium or a building. As shown in FIG. 1, the elevator apparatus 10 includes a car 31, a counterweight 32, a lifting motor 40, guide rails 21 to 24, and a control panel 70.

  Each of the guide rails 21 to 24 is a member whose longitudinal direction is the Z-axis direction. The guide rails 21 and 22 are a pair of members for guiding the car 31 to be movable up and down. The guide rails 23 and 24 are a pair of members for guiding the counterweight 32 so as to be movable up and down. The guide rail 21 and the guide rail 22 are spaced apart in the Y-axis direction. Similarly, the guide rails 23 and 24 are spaced apart from each other in the Y-axis direction. In FIG. 1, the guide rails 23 and 24 for the counterweight 32 are arranged apart from the guide rails 21 and 22 for the car 31 in the X-axis direction. However, the arrangement of the guide rails 21 to 24 is not limited to the arrangement shown in FIG.

  The car 31 is a unit that accommodates passengers and moves up and down the hoistway 100. The car 31 is disposed between the guide rails 21 and 22 and is attached to the guide rails 21 and 22 so as to be movable in the vertical direction. On the side surface of the car 31, a door (not shown) for entering and exiting the internal space is provided. FIG. 2 is a diagram schematically showing the guide rails 21 to 24, the car 31, and the counterweight 32. As shown in FIG. 2, the car 31 is slidably provided on the guide rails 21 and 22 via a guide shoe 31a.

  Returning to FIG. 1, the counterweight 32 is attached to the guide rails 23 and 24 so as to be movable in the vertical direction. The weight of the counterweight 32 is adjusted to be a predetermined ratio with respect to the weight of the car 31. As shown in FIG. 2, the counterweight 32 is also slidably provided on the guide rails 23 and 24 via the guide shoe 32a.

  Returning to FIG. 1, the elevating motor 40 is a motor for elevating the car 31. The elevating motor 40 is disposed above the hoistway 100 so that the rotation axis is parallel to the Y axis. A pulley 42 is fixed to the rotating shaft of the lifting motor 40.

  As shown in FIG. 1, a wire 60 is wound around the pulley 42 of the lifting motor 40. The wire 60 has one end fixed to the car 31 and the other end fixed to the counterweight 32.

  The control panel 70 accommodates a lifting motor 40 and a control device for controlling equipment provided in the car 31.

  FIG. 3 is a block diagram showing a control system of the elevator apparatus 10. The control system includes a control unit 80 and a drive unit 90 accommodated in the control panel 70, an operation panel 311, and acceleration sensors 51 and 52.

  The drive unit 90 includes a power source for supplying power to the elevating motor 40, an inverter, and the like. The drive unit 90 drives the lifting motor 40 based on instructions from the control unit 80. Moreover, based on the instruction | indication from the control unit 80, the door provided in the cage | basket | car 31 and the door provided in the platform of each floor are opened and closed.

  The operation panel 311 is provided on the inner wall of the car 31. The operation panel 311 is an interface for receiving a destination floor and the like from the passengers of the car 31. The passenger can notify the control unit 80 of the destination floor and the like by operating the operation panel 311.

  As shown in FIG. 2, the acceleration sensor 51 is attached to the lower surface of the car 31. The acceleration sensor 51 detects acceleration in the X-axis direction and the Y-axis direction orthogonal to the vertical axis, that is, the horizontal direction, and outputs a voltage signal Sv corresponding to the detected acceleration.

  As shown in FIG. 1, the operation panel 311 and the acceleration sensor 51 are connected to a control unit 80 accommodated in the control panel 70 via a cable 71.

  As shown in FIG. 2, the acceleration sensor 52 is attached to the lower surface of the counterweight 32. Similarly to the acceleration sensor 51, the acceleration sensor 52 detects acceleration in the X-axis direction and the Y-axis direction orthogonal to the vertical axis, that is, in the horizontal direction. The acceleration sensor 52 is operated by, for example, power supplied from a battery provided integrally with the counterweight 32 and transmits a radio signal indicating a value corresponding to the detected acceleration to the control unit 80. This radio signal is a digital signal Sd indicating the detected acceleration value.

  FIG. 4 is a block diagram of the control unit 80. The control unit 80 is a computer having a CPU (Central Processing Unit) 81, a main storage unit 82, an auxiliary storage unit 83, and an interface unit 84.

  The CPU 81 executes processing to be described later according to a program stored in the auxiliary storage unit 83.

  The main storage unit 82 includes a RAM (Random Access Memory) and the like. The main storage unit 82 is used as a work area for the CPU 81.

  The auxiliary storage unit 83 includes a nonvolatile memory such as a ROM (Read Only Memory) or a semiconductor memory. The auxiliary storage unit 83 stores programs executed by the CPU 81, various parameters, and the like.

  The interface unit 84 includes a serial interface, a parallel interface, a wireless LAN interface, and the like. The operation panel 311, the acceleration sensors 51 and 52, and the drive unit 90 are connected to the CPU 61 via the interface unit 84. The CPU 61 is connected to a network 120 such as the Internet via the interface unit 84.

  In the elevator apparatus 10 configured as described above, the CPU 81 controls the drive unit 90 based on inputs from the operation panel 311 and the acceleration sensors 51 and 52. For example, when the CPU 81 rotates the elevating motor 40 forward via the drive unit 90, the car 31 is raised and the counterweight 32 is lowered. When the CPU 81 reverses the lifting motor 40 via the drive unit 90, the car 31 is lowered and the counterweight 32 is raised.

  In preparation for the occurrence of an earthquake, the CPU 81 executes a monitoring process for monitoring the state of the elevator apparatus 10 based on outputs from the acceleration sensors 51 and 52. Hereinafter, the monitoring process will be described with reference to FIG. FIG. 5 shows a flowchart representing a series of processes executed by the CPU 81. The CPU 81 sequentially executes the processes shown in the flowchart of FIG. 5 at the timing when the control unit 80 is activated.

  First, the CPU 81 compares the voltage signal Sv output from the acceleration sensor 51 of the car 31 with the threshold value TH1 (step S101). FIG. 6 is a diagram illustrating an example of the voltage signal Sv. As shown in FIG. 6, when an earthquake occurs, a voltage signal Sv having a value corresponding to the shaking of the car 31 to which the acceleration sensor 51 is attached is output from the acceleration sensor 51.

  When the value of the voltage signal Sv is larger than the threshold value TH1 (step S101: Yes), the CPU 81 applies an acting force F acting on each of the guide rails 21 to 24 based on the outputs from the acceleration sensors 51 and 52. (Step S102).

  The acting force F can be obtained using the following equation (1), where m is the equivalent mass of the moving body and a is the acceleration calculated from the outputs from the acceleration sensors 51 and 52.

  F = m × a (1)

  When the moving body is the car 31, m is the mass of the car 31, and when the moving body is the counterweight 32, m is the mass of the counterweight 32.

  In the elevator apparatus 10, the output signal from the acceleration sensor 51 is a voltage signal Sv. Therefore, the CPU 81 obtains the acceleration a by substituting the value v of the voltage signal Sv into the proportional function f (v), and obtains the acting force F by substituting the obtained acceleration a into the above equation (1). . On the other hand, the wireless output signal from the acceleration sensor 52 is a digital signal Sd. For this reason, the CPU 81 obtains the acting force F by substituting the acceleration a indicated by the digital signal Sd into the above equation (1).

  The CPU 81 calculates acting forces F21 and F22 acting on the guide rails 21 and 22, and acting forces F23 and F24 acting on the guide rails 23 and 24, respectively. As can be seen from FIG. 1, the acting force F21 is, for example, a force in the + Y direction from the car 31 toward the guide rail 21, and the acting force F22 is a force in the -Y direction from the car 31 toward the guide rail 22. is there. The acting force F23 is, for example, a force in the + Y direction from the counterweight 32 toward the guide rail 23, and the acting force F24 is a force in the −Y direction from the counterweight 32 toward the guide rail 24.

  Next, the acting forces F21 to F24 as the calculated results are recorded in time series. Thereby, the acting forces F21 (t) to F24 (t) associated with the time t are recorded (step S103).

  Next, the voltage signal Sv output from the acceleration sensor 51 of the car 31 is compared with the threshold value TH1 (step S104). When the value of the voltage signal Sv is larger than the threshold value TH1 (step S104: No), the CPU 81 repeatedly executes the processes of steps S101 to S103. On the other hand, when the value of the voltage signal Sv is equal to or less than the threshold value TH1 (step S104: Yes), the CPU 81 determines that the earthquake has stopped. Then, it is determined whether or not a predetermined time has passed without exceeding the threshold value TH1 after the value of the voltage signal Sv becomes equal to or less than the threshold value TH1 (step S105).

  When the CPU 81 determines that the predetermined time has not elapsed (step S105: No), the processing of steps S104 and S105 is repeated. On the other hand, when the CPU 81 determines that the predetermined time has elapsed (step S105: Yes), the calculation result recording is ended (step S106).

  Next, the CPU 81 analyzes the acting forces F21 (t) to F24 (t) as the calculation results recorded in time series (step S107). Specifically, the acting forces F21 (t) to F24 (t) are compared with a reference value P set according to each acting force.

  The reference value P can be obtained using the following equation (2), where k is the design horizontal seismic intensity, m is the equivalent mass of the moving body, g is the acceleration of gravity, and ε is the weight ratio of the upper and lower guide shoes of the moving body. .

  P = k × m × g × ε (2)

  When the moving body is the car 31, m is the mass of the car 31, and when the moving body is the counterweight 32, m is the mass of the counterweight 32. Further, the weight ratio ε represents a weight ratio from the guide shoes 31a and 32a to the guide rails 21 to 24. For example, if the weight from the upper guide shoes 31a and 32a is Wu and the weight from the lower guide shoes 31a and 32a is Wd, the distance between the lower guide shoes 31a and 32a and the guide rails 21 to 24 is The weighting ratio ε is expressed by the following equation (3).

  ε = Wd / (Wu + Wd) (3)

  Further, the weight ratio ε between the upper guide shoes 31a and 32a and the guide rails 21 to 24 is expressed by the following equation (4).

  ε = Wu / (Wu + Wd) (4)

  Reference values P21 to P24 corresponding to the acting forces F21 (t) to F24 (t) are stored in advance in the auxiliary storage unit 83. The CPU 81 compares the acting forces F21 (t) to F24 (t) with the reference values P21 to P24.

  FIG. 7 is a diagram illustrating an example of the acting force F21 (t). As shown in FIG. 7, the waveform of the acting force F21 (t) is similar to the waveform of the voltage signal Sv shown in FIG. The CPU 81 compares the acting force F21 (t) with the reference value P21. Similarly, the CPU 81 compares the acting forces F22 (t) to F24 (t) with the corresponding reference values P22 to P24, respectively. If any of the acting forces F21 (t) to F24 (t) is greater than or equal to the corresponding reference values P22 to P24 (step S108: No), the CPU 81 cannot perform the automatic diagnosis operation. And stop the operation of the elevator apparatus 10 (step S111). Next, the analysis result and the fact that an inspection by the operator of the elevator apparatus 10 is necessary are notified to, for example, an external management center via the network 120 (step S113). Thereby, information such as the acting forces F22 (t) to F24 (t) stored in time series is transmitted to an external organization such as a management center.

  On the other hand, the CPU 81 compares the action forces F22 (t) to F24 (t) with the corresponding reference values P22 to P24, and as a result, the reference value P22 to which all the action forces F21 (t) to F24 (t) correspond. If it is smaller than -P24 (step S108: Yes), it is determined that the automatic diagnosis operation can be performed, and the automatic diagnosis operation is performed (step S109).

  The automatic diagnostic operation is a diagnostic operation for actually operating a device such as the car 31 and detecting an abnormality such as bending or distortion of the guide rails 21 to 24 or an operation failure of the lifting motor 40. It is. When the CPU 81 performs automatic diagnosis operation and determines that an abnormality has occurred in the elevator apparatus 10 (step S110: No), the operation of the elevator apparatus 10 is stopped and the operation is stopped. (Step S111). And it notifies to an external management center etc. via the network 120 that the inspection by the operator of the elevator apparatus 10 is required.

  On the other hand, when the CPU 81 performs the automatic diagnosis operation and determines that no abnormality has occurred in the elevator apparatus 10 (step S110: Yes), the CPU 81 starts the normal operation of the elevator apparatus 10 (step S112). As a result, the passenger can use the elevator apparatus 10. Further, the CPU 81 notifies the external management center, for example, via the network 120 that the analysis result and the elevator apparatus 10 are normal (step S113).

  As described above, in the elevator apparatus 10 according to the present embodiment, the acceleration sensors 51 and 52 are provided in the car 31 and the counterweight 32 as a moving body, so that the guide rails 21 to 24 can be moved from the car 31 and the counterweight 32. The acting force can be accurately detected. Thereby, when the automatic diagnosis operation can be performed, it is not erroneously determined that the inspection work by the time-consuming worker is necessary, and the elevator apparatus is not put on standby for a long time. Therefore, the elevator apparatus stopped due to the occurrence of the earthquake can be restored early.

  Further, each of the acting forces F acting on each of the guide rails 21 to 24 is compared with a reference value P equivalent to the proof stress limit of the guide rails 21 to 24 (step S108), so that the automatic diagnosis operation is accurately performed. It can be determined whether or not. That is, it is possible to accurately determine whether or not the inspection work by the worker is necessary. Therefore, the reliability of the elevator apparatus can be improved.

  Further, in the present embodiment, information such as calculation history, analysis results, and whether or not automatic diagnosis operation can be performed is output to the network 120. Therefore, it is possible to control and manage the elevator apparatus with high accuracy from a management center or the like that can be connected to the network 120.

  As mentioned above, although embodiment of this invention was described, this invention is not limited by the said embodiment. For example, in the above embodiment, the acceleration sensors 51 and 52 are provided on the lower surfaces of the car 31 and the counterweight 32 as moving bodies. Not only this but the acceleration sensors 51 and 52 are good also as providing in the upper part of the cage | basket | car 31 and the counterweight 32. FIG. A plurality of acceleration sensors 51 and 52 may be provided in each of the car 31 and the counterweight 32.

  In the above embodiment, the acceleration sensor 52 provided in the counterweight 32 is operated by the battery. Not limited to this, power may be supplied to the acceleration sensor 52 by wiring from the control panel 70. Further, electric power may be supplied to the acceleration sensor 52 by a dynamo or the like that generates electricity when the counterweight 32 moves up and down.

  In the above embodiment, the acting force F and the reference value P are compared to determine whether or not automatic diagnosis operation is possible. Not limited to this, an automatic diagnosis is made by directly comparing the acceleration a obtained by dividing the acting force F by the equivalent mass m with a value (= P / m) obtained by dividing the reference value P by the equivalent mass m. It may be determined whether or not driving is possible.

  In the above embodiment, the acceleration sensor 52 and the control unit 80 communicate directly as shown in FIG. For example, a relay antenna for relaying a radio signal from the acceleration sensor 52 to the control unit 80 may be provided on the inner wall of the hoistway 100. For example, as shown in FIG. 8, the relay antenna 55 may be provided on the lower surface or side surface of the car 31. Thereby, even when the counterweight 32 moves to a position far from the control panel 70, it becomes possible to perform good communication.

  In the embodiment described above, information such as calculation history, analysis results, and whether or not automatic diagnosis operation can be performed is output to the network 120. The present invention is not limited to this, and information indicating the location of the elevator apparatus may be output. As the information indicating the location, information such as the address of the building where the elevator apparatus is installed and the latitude and longitude indicating the position of the building can be considered.

  In this case, for example, as shown in FIG. 9, when a control unit 80 of a plurality of elevator apparatuses 10 and a management center 125 are connected to the network 120, the transmission is transmitted from each elevator apparatus 10. Based on the information, it is possible to grasp or predict the source of the earthquake and the distribution of the damage situation.

  In the above embodiment, for example, the CPU 81 of the control unit 80 functions as a calculation unit that calculates the acting force F acting on the guide rails 21 to 24, and functions as a determination unit that determines whether or not to perform an automatic diagnosis operation. .

  In the above embodiment, for example, the occurrence or convergence of an earthquake is determined based on the output from the acceleration sensor 51. Not limited to this, the occurrence or convergence of an earthquake may be determined from the waveform of a curve indicating the transition of the acceleration sensor 51.

  In the above-described embodiment, the CPU 81 of the control unit 80 functions as a calculation unit that calculates the acting force F acting on the guide rails 21 to 24, and functions as a determination unit that determines whether to perform an automatic diagnosis operation.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 Elevator apparatus 21-24 Guide rail 31a Guide shoe 32 Counterweight 32a Guide shoe 40 Lifting motor 42 Pulley 51,52 Acceleration sensor 55 Relay antenna 60 Wire 61 CPU
70 Control panel 71 Cable 80 Control unit 81 CPU
82 Main storage unit 83 Auxiliary storage unit 84 Interface unit 90 Drive unit 100 Hoistway 120 Network 125 Management center 311 Operation panel Sd Digital signal Sv Voltage signal

Claims (8)

A moving body that moves up and down the hoistway along the rail;
A sensor that is provided in the moving body and detects a horizontal acceleration of the moving body stopped by an earthquake;
Detection results of the sensor, is smaller than the reference value determined using design horizontal seismic intensity, the mobile is raised and lowered is determined that it is possible to diagnose operation for performing abnormality diagnosis, the detection result of the sensor Is a determination means for determining that the diagnostic operation is impossible when the reference value is greater than or equal to the reference value;
An elevator apparatus comprising: Whether the hoistway is raised or lowered along the first rail,
A first sensor that is provided in the car and detects a horizontal acceleration of the car stopped by an earthquake;
The first sensor detection result, is smaller than the first reference value is determined using design horizontal seismic, said by lifting the car determines that it is possible to diagnose operation for performing abnormality diagnosis, the A determination means for determining that the diagnostic operation is impossible when a detection result of the first sensor is equal to or greater than the first reference value;
An elevator apparatus comprising: A motor for raising and lowering the car;
A counterweight that ascends and descends the hoistway along the second rail;
A wire having one end fixed to the cage and the other end fixed to the counterweight, and wound around a rotating shaft of the motor;
A second sensor provided on the counterweight for detecting horizontal acceleration of the counterweight stopped by an earthquake;
With
Before Symbol judging means detection result of the second sensor, is smaller than the second reference value calculated using the design horizontal seismic intensity, the diagnostic operation is determined that it is possible, the second The elevator apparatus according to claim 2, wherein when the detection result of the sensor is equal to or greater than the second reference value, it is determined that the diagnostic operation is impossible.   The elevator apparatus according to claim 2 or 3, further comprising a communication unit that outputs a determination result by the determination unit to a network. The elevator apparatus according to any one of claims 2 to 4, wherein the second sensor is capable of wireless communication with the determination unit.   The elevator apparatus of Claim 5 provided with the antenna which is provided in the inner wall of the said hoistway, or the lower surface of the said cage, and receives the radio signal from a said 2nd sensor.   The elevator apparatus according to any one of claims 2 to 6, further comprising a control unit configured to raise and lower the car and perform the diagnostic operation when the determination unit determines that the diagnostic operation is possible. The hoistway, mobile for vertically along rails, and detecting a horizontal acceleration of the moving body when it stops by earthquakes,
When the acceleration is smaller than a reference value obtained using a design horizontal seismic intensity, it is determined that a diagnostic operation for performing an abnormality diagnosis by raising and lowering the moving body is possible, and the acceleration is equal to or higher than the reference value. In some cases, determining that the diagnostic operation is impossible;
A diagnostic method comprising:

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