WO2022254619A1 - エレベーターシステム - Google Patents
エレベーターシステム Download PDFInfo
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- WO2022254619A1 WO2022254619A1 PCT/JP2021/021040 JP2021021040W WO2022254619A1 WO 2022254619 A1 WO2022254619 A1 WO 2022254619A1 JP 2021021040 W JP2021021040 W JP 2021021040W WO 2022254619 A1 WO2022254619 A1 WO 2022254619A1
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- 230000001133 acceleration Effects 0.000 claims abstract description 201
- 238000000034 method Methods 0.000 claims description 21
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 12
- 239000000284 extract Substances 0.000 claims 1
- 230000003028 elevating effect Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 18
- 230000006870 function Effects 0.000 description 12
- 238000013016 damping Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
Definitions
- This disclosure relates to an elevator system.
- the amount of rope sway is estimated based on the sway of the building detected by the building sway detector and the position of the car. Then, when the estimated swing amount of the rope is greater than or equal to the set value, the damping floor is set and the car is moved to the damping floor.
- a damping floor is a floor capable of damping the swing of the rope (see Patent Document 1, for example).
- the amount of rope swing is estimated based on the swing of the building and the position of the car.
- the swaying of the rope caused by the swaying of the building changes depending on the natural frequency of the rope.
- the natural frequency of the rope varies with the car position. Therefore, very complicated calculations are required to estimate the amount of rope sway from the amount of building sway.
- the present disclosure has been made to solve the above problems, and aims to obtain an elevator system that can easily estimate the amount of shaking of an estimation target.
- An elevator system includes an elevator system body having an elevator device provided in a building, wherein the elevator device is a car, a counterweight, or at least one of a car and a counterweight.
- Acceleration detector for detecting vertical acceleration, which is vertical acceleration that occurs in the body, and horizontal acceleration, which is horizontal acceleration that occurs in the elevator, is connected to the elevator and has flexibility It has an estimation target that is a long object and a control device.
- the control device has a shake estimator. The amount of shaking is estimated, and it is determined whether or not the estimated object is shaking abnormally.
- FIG. 1 is a schematic configuration diagram showing an elevator system according to Embodiment 1;
- FIG. 2 is a block diagram showing a control system of the elevator system of FIG. 1;
- FIG. FIG. 2 is an explanatory diagram schematically showing swaying that occurs in a plurality of main ropes in FIG. 1;
- 3 is a flow chart showing the operation of the control device of FIG. 2;
- FIG. 4 is a schematic configuration diagram showing an elevator system according to Embodiment 2;
- 6 is a block diagram showing a control system of the elevator system of FIG. 5;
- FIG. 7 is a flow chart showing the operation of the control device of FIG. 6;
- FIG. 11 is a schematic configuration diagram showing an example of an elevator system according to Embodiment 3;
- FIG. 9 is a block diagram showing a control system of the elevator system of FIG. 8;
- FIG. 2 is a configuration diagram showing a first example of a processing circuit that implements each function of the control device of Embodiments 1 to 3;
- FIG. 5 is a configuration diagram showing a second example of a processing circuit that implements each function of the control device according to the first to third embodiments;
- FIG. 1 is a schematic configuration diagram showing an elevator system according to Embodiment 1.
- a building 50 is provided with a hoistway 51 and a machine room 52 .
- the machine room 52 is provided above the hoistway 51 .
- the elevator system of Embodiment 1 includes an elevator system main body 30. Elevator system main body 30 is provided in building 50 .
- the elevator system main body 30 of Embodiment 1 has one elevator device 31 . That is, the elevator system main body 30 of Embodiment 1 is composed of only one elevator device 31 .
- the elevator device 31 includes a hoisting machine 11, a deflector 13, a plurality of main ropes 14, a car 15, a counterweight 16, a plurality of compensating ropes 17, a counterweight 18, a car acceleration detector 19, and a control device. has 20.
- the hoist 11 is provided in the machine room 52.
- the hoisting machine 11 also has a drive sheave 12, a hoisting machine motor (not shown), and a hoisting machine brake (not shown).
- a hoist motor rotates the drive sheave 12 .
- the hoist brake keeps the drive sheave 12 stationary.
- the hoist brake also brakes the rotation of the drive sheave 12 .
- a plurality of main ropes 14 are wound around the drive sheave 12 and the deflector wheel 13 .
- the cage 15 is connected to first ends of the main ropes 14 .
- a counterweight 16 is connected to the second ends of the plurality of main ropes 14 .
- the car 15 and the counterweight 16 are suspended in the hoistway 51 by a plurality of main ropes 14. Further, the car 15 and the counterweight 16 move up and down in the hoistway 51 by rotating the drive sheave 12 .
- a pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed in the hoistway 51 .
- a pair of car guide rails guides the car 15 to move up and down.
- a pair of counterweight guide rails guide the lifting and lowering of the counterweight 16 .
- a plurality of compensating ropes 17 are suspended between the lower part of the cage 15 and the lower part of the counterweight 16. In FIG. 1 only one compen rope 17 is shown. The compensating ropes 17 compensate for the weight imbalance of the main ropes 14 on one side of the drive sheave 12 and the other.
- the balance wheel 18 is provided at the bottom of the hoistway 51.
- a plurality of compensating ropes 17 are wound around the balance wheel 18 .
- the balance wheel 18 tensions the compen ropes 17 .
- the car acceleration detector 19 is provided in the car 15.
- the elevator in the first embodiment is the car 15 .
- a car acceleration detector 19 detects a vertical acceleration ACv0 and a horizontal acceleration ACh0 of the car 15 .
- the vertical acceleration ACv0 is vertical acceleration that occurs in the car 15 .
- the horizontal acceleration ACh0 is horizontal acceleration that occurs in the car 15 .
- a plurality of main ropes 14 and a plurality of compensating ropes 17 are connected to the car 15 respectively. Moreover, each of the plurality of main ropes 14 and the plurality of compensating ropes 17 is a long object having flexibility.
- the objects to be estimated in the first embodiment are multiple main ropes 14 and multiple compensating ropes 17 .
- a signal from the car acceleration detector 19 is sent to the control device 20 .
- the control device 20 is provided in the machine room 52 .
- FIG. 2 is a block diagram showing the control system of the elevator system in FIG.
- the control device 20 has an operation control section 21 and a shake estimation section 22 as functional blocks.
- the operation control unit 21 controls the operation of the car 15 by controlling the hoist 11 . Further, the operation control unit 21 controls operation of the car 15 in a plurality of operation modes.
- the multiple operating modes include a normal operating mode and a controlled operating mode.
- the normal operation mode is a mode in which the car 15 is normally operated.
- Normal operation is an operation method in which the car 15 is automatically moved to a destination floor in response to calls from within the car 15 and calls from a plurality of halls.
- the control operation mode is an operation mode in which the car 15 is operated under control.
- the control operation is an operation method for moving the car 15 to a position that suppresses the shaking of the estimated object.
- the car acceleration detector 19 separately detects the vertical acceleration ACv0 and the horizontal acceleration ACh0, and outputs signals corresponding to each to the shake estimator 22.
- the sway estimator 22 estimates the amount of sway of the estimated object and determines whether or not the estimated object is swaying abnormally. judge.
- FIG. 3 is an explanatory diagram schematically showing the sway that occurs in the multiple main ropes 14 of FIG.
- a long-period vibration occurs in the building 50 due to an earthquake occurring in a remote location or a strong wind. At this time, the building 50 sways at the natural frequency of the building 50 . Therefore, the vibration frequency of the building 50 in long-period vibration is low. In addition, long-period vibration often continues for a long period of time.
- the swaying of the multiple main ropes 14 gradually increases even if the swaying of the building 50 is small.
- the car 15 vibrates in the vertical direction according to the amount of swaying. That is, when the swaying of the plurality of main ropes 14 increases, the car 15 vibrates in the vertical direction according to the amplitude of the plurality of main ropes 14 in the horizontal direction.
- the sway estimating unit 22 estimates the amount of swaying of the object to be estimated due to the swaying of the building 50 based on the vertical and horizontal vibrations generated in the car 15, and Determine whether or not there is an abnormal shaking of the estimated object.
- a first frequency band and a second frequency band are set in the shake estimation unit 22 .
- the first frequency band and the second frequency band are set based on the primary natural period of the building 50, respectively.
- the first frequency band is a frequency band including the natural frequency of building 50 .
- the second frequency band is a frequency band including half the natural frequency of the building 50 .
- the shake estimator 22 performs filtering, such as bandpass filtering, to extract the components of the first frequency band from the horizontal acceleration ACh0 detected by the car acceleration detector 19, and calculates the horizontal acceleration ACh1.
- the vertical acceleration ACv0 detected by the car acceleration detector 19 includes gravitational acceleration. Therefore, the shake estimator 22 removes the gravitational acceleration from the vertical acceleration ACv0.
- the gravitational acceleration component may be removed by directly subtracting the magnitude of the gravitational acceleration, or by subtracting the average value of the gravitational acceleration over a certain period of time while the car 15 is stopped.
- the estimation target since the shaking of the estimation target occurs in resonance with the long-period vibration of the building 50, the estimation target also shakes at the natural frequency of the building 50.
- the vertical vibration of the car 15 is generated according to the amplitude of the estimation object in the horizontal direction. Therefore, the frequency of the vertical vibration of the car 15 occurs at the frequency of the shaking of the estimation object, that is, the frequency corresponding to the natural frequency of the building 50 .
- the frequency of the vertical vibration of the car 15 caused by the shaking of the estimation target is 1/2 of the natural frequency of the building 50. Therefore, the shake estimator 22 performs a filtering process, such as a band-pass filtering process, to extract the components of the second frequency band from the vertical acceleration ACv0 after removing the gravitational acceleration, and calculates the vertical acceleration ACv1.
- a filtering process such as a band-pass filtering process
- the shake estimating unit 22 estimates the amount of shake of the estimation target, and determines if an abnormal shake occurs in the estimation target. determine whether there is
- a first vertical direction threshold LCv1, a first horizontal direction threshold LCh1, a second vertical direction threshold LCv2, and a second horizontal direction threshold LCh2 are set in the shake estimation unit 22.
- the first vertical threshold LCv1 and the second vertical threshold LCv2 are criteria for determining the vertical acceleration ACv1 of the car 15, respectively. Also, the second vertical threshold LCv2 is greater than the first vertical threshold LCv1. That is, LCv2>LCv1.
- the first horizontal threshold LCh1 and the second horizontal threshold LCh2 are criteria for determining the horizontal acceleration ACh1 of the car 15, respectively. Also, the second horizontal threshold LCh2 is smaller than the first horizontal threshold LCh1. That is, LCh2 ⁇ LCh1.
- the shake estimator 22 determines that the estimated object is undergoing an abnormal shake. .
- the shake estimating unit 22 It may be determined that the object is swaying abnormally.
- the first vertical direction threshold LCv1 is set to a magnitude such that the estimated object does not collide with equipment in the hoistway 51 due to the shaking of the estimated object.
- the first horizontal threshold LCh1 is set to a magnitude that allows it to be estimated that the shaking of the estimation target is caused by the shaking of the building 50 .
- the operation control unit 21 sets the operation mode to the control operation mode.
- the shake estimator 22 determines that the estimated object is shaking excessively.
- the operation control unit 21 stops the car 15 at the nearest floor without changing the operation mode to the control operation mode. stop driving.
- the operation control unit 21 determines that the horizontal acceleration ACh1 has become less than the second horizontal direction threshold value LCh2 when the operation mode is the control operation mode, the operation control unit 21 returns the operation mode to the normal operation mode.
- the second horizontal threshold LCh2 is a threshold for detecting that the shaking of the building 50 has stopped.
- the shake estimation unit 22 determines that the horizontal acceleration ACh1 has become less than the second horizontal threshold LCh2. good.
- FIG. 4 is a flow chart showing the operation of the control device 20 of FIG.
- the control device 20 repeatedly executes the processing of FIG. 4 during normal operation of the car 15 .
- step S101 the control device 20 determines whether the vertical acceleration ACv1 is greater than or equal to the first vertical direction threshold LCv1. If the vertical acceleration ACv1 is less than the first vertical direction threshold LCv1, the control device 20 maintains the normal operation mode in step S107 and ends the process.
- the control device 20 determines in step S102 whether the horizontal acceleration ACh1 is greater than or equal to the first horizontal threshold LCh1. If the horizontal acceleration ACh1 is less than the first horizontal direction threshold value LCh1, the control device 20 maintains the normal operation mode in step S107 and terminates the process.
- the control device 20 moves the car 15 to the nearest floor and stops it in step S103. Then, the passengers in the car 15 are moved to the landing and the car 15 is emptied.
- step S104 the control device 20 determines whether the vertical acceleration ACv1 is less than the second vertical direction threshold LCv2. If the vertical acceleration ACv1 is less than the second vertical direction threshold LCv2, the control device 20 performs controlled operation in step S105.
- control device 20 moves the car 15 to a non-resonant floor and stops it with the door closed.
- a non-resonance floor is a floor where the estimation target does not resonate with the shaking of the building 50 .
- step S106 the control device 20 determines whether the horizontal acceleration ACh1 has become less than the second horizontal direction threshold value LCh2. If the horizontal acceleration ACh1 has not become less than the second horizontal direction threshold value LCh2, the control device 20 returns to the process of step S104.
- control device 20 When the horizontal acceleration ACh1 becomes less than the second horizontal threshold LCh2, the control device 20 returns the operation mode to the normal operation mode in step S107, and ends the process.
- step S104 if the vertical acceleration ACv1 is not less than the second vertical threshold LCv2, that is, if the vertical acceleration ACv1 is equal to or greater than the second vertical threshold LCv2, the controller 20 causes the car 15 to operate in step S108. Pause.
- step S109 the control device 20 determines whether or not the restoration work by the maintenance personnel has been completed. The control device 20 continues to suspend operation of the car 15 until the restoration work is completed. When the restoration work is completed, the control device 20 returns the operation mode to the normal operation mode in step S107, and terminates the process.
- the sway estimator 22 estimates the amount of swaying of the estimated object based on the vertical acceleration ACv1 and the horizontal acceleration ACh1, and determines whether or not the estimated object is swaying abnormally. do. Therefore, it is possible to easily estimate the sway amount of the object to be estimated by a simple calculation without using the position of the car 15 as a variable.
- the shaking of the estimation target can be easily estimated from the vertical acceleration ACv1 of the car 15. Further, by confirming whether or not the building 50 is shaking from the horizontal acceleration ACh1 of the car 15, it is possible to accurately detect the occurrence of shaking of the estimation object. As a result, deterioration of service due to unnecessary control operation can be suppressed.
- the shake estimator 22 performs filter processing for extracting the components of the first frequency band from the horizontal acceleration ACh0 detected by the car acceleration detector 19 . Further, the shake estimator 22 performs filter processing for extracting components of the second frequency band from the vertical acceleration ACv0 detected by the car acceleration detector 19 . Then, the shake estimator 22 estimates the shake amount of the estimation target based on the filtered vertical acceleration ACv1 and the filtered horizontal acceleration ACh1.
- the shake estimator 22 determines that the estimated object is undergoing an abnormal shake. judge.
- the operation control unit 21 sets the operation mode to the controlled operation mode. Therefore, it is possible to efficiently attenuate the shaking of the estimation target.
- the shake estimator 22 determines that the estimated object is undergoing excessive shake. Then, when the sway estimating unit 22 determines that an excessive sway is occurring in the estimation object, the operation control unit 21 stops the car 15 at the nearest floor without changing the operation mode to the control operation mode. 15 is shut down.
- the operation control unit 21 when the operation mode is the control operation mode, the operation control unit 21 returns the operation mode to the normal operation mode when the shake estimation unit 22 determines that the horizontal acceleration ACh1 has become less than the second horizontal direction threshold value LCh2. . As a result, after the shaking of the building 50 subsides, the operation mode can be smoothly shifted to the normal operation mode.
- the shake estimator 22 is set with a third horizontal threshold ACh3 that is larger than the first horizontal threshold LCh1.
- a third vertical threshold LCv3 smaller than the first vertical threshold LCv1 is set in the shake estimator 22 .
- FIG. 5 is a schematic configuration diagram showing an elevator system according to Embodiment 2.
- the elevator device 31 of the second embodiment has a weight acceleration detector 23 in addition to the same configuration as the elevator device 31 of the first embodiment.
- the weight acceleration detector 23 is provided on the counterweight 16 .
- both the car 15 and the counterweight 16 are lifting bodies.
- a weight acceleration detector 23 detects a vertical acceleration AMv0 and a horizontal acceleration AMh0 of the counterweight 16 .
- the vertical acceleration AMv0 is vertical acceleration that occurs in the counterweight 16 .
- the horizontal acceleration AMh0 is horizontal acceleration that occurs in the counterweight 16 .
- a signal from the weight acceleration detector 23 is sent to the control device 20 .
- FIG. 6 is a block diagram showing the control system of the elevator system of FIG.
- the weight acceleration detector 23 separately detects the vertical acceleration AMv0 and the horizontal acceleration AMh0, and outputs corresponding signals to the shake estimator 22 .
- the shake estimator 22 estimates the amount of shake of the estimation object, and determines whether or not the estimation object is shaking abnormally. judge.
- the shake estimator 22 performs a filtering process, such as a bandpass filtering process, to extract the components of the first frequency band from the horizontal acceleration AMh0 detected by the weight acceleration detector 23, and calculates the horizontal acceleration AMh1.
- a filtering process such as a bandpass filtering process
- the shake estimator 22 removes the gravitational acceleration from the vertical acceleration AMv0 detected by the weight acceleration detector 23 .
- the shake estimating unit 22 performs a filtering process, for example, a band-pass filtering process for extracting the components of the second frequency band from the vertical acceleration AMv0 after removing the gravitational acceleration, and calculates the vertical acceleration AMv1.
- a filtering process for example, a band-pass filtering process for extracting the components of the second frequency band from the vertical acceleration AMv0 after removing the gravitational acceleration, and calculates the vertical acceleration AMv1.
- the shake estimating unit 22 calculates the estimated target object based on the filtered vertical acceleration ACv1, the filtered horizontal acceleration ACh1, the filtered vertical acceleration AMv1, and the filtered horizontal acceleration AMh1. Estimate the amount of shaking of
- a first car vertical direction threshold LCv1, a first car horizontal direction threshold LCh1, a second car vertical direction threshold LCv2, and a second car horizontal direction threshold LCh2 are set in the shaking estimation unit 22.
- the first car vertical direction threshold LCv1 is the same as the first vertical direction threshold LCv1 of the first embodiment.
- the first car horizontal threshold LCh1 is the same as the first horizontal threshold LCh1 of the first embodiment.
- the second car vertical threshold LCv2 is the same as the second vertical threshold LCv2 of the first embodiment.
- the second car horizontal threshold LCh2 is the same as the second horizontal threshold LCh2 of the first embodiment.
- a first weight vertical direction threshold LMv1, a first weight horizontal direction threshold LMh1, a second weight vertical direction threshold LMv2, and a second weight horizontal direction threshold LMh2 are set in the shake estimation unit 22.
- the first weight vertical direction threshold LMv1 and the second weight vertical direction threshold LMv2 are criteria for determining the vertical acceleration AMv1 of the counterweight 16, respectively. Also, the second weight vertical direction threshold LMv2 is greater than the first weight vertical direction threshold LMv1. That is, LMv2>LMv1.
- the first weight horizontal direction threshold LMh1 and the second weight horizontal direction threshold LMh2 are criteria for determining the horizontal acceleration AMh1 of the counterweight 16, respectively. Also, the second weight horizontal direction threshold LMh2 is smaller than the first weight horizontal direction threshold LMh1. That is, LMh2 ⁇ LMh1.
- At least one of the condition that the vertical acceleration ACv1 of the car 15 is equal to or greater than the first car vertical direction threshold LCv1 and the condition that the vertical acceleration AMv1 of the counterweight 16 is equal to or greater than the first weight vertical direction threshold LMv1 is satisfied.
- a state in which the first condition is satisfied is defined as a state in which the first condition is satisfied.
- a state in which the horizontal acceleration ACh1 of the car 15 is greater than or equal to the first car horizontal direction threshold LCh1 and the horizontal acceleration AMh1 of the counterweight 16 is greater than or equal to the first weight horizontal direction threshold LMh1 is defined as a second condition satisfaction state.
- the shake estimation unit 22 determines that an abnormal shake is occurring in the estimation target when the first condition is satisfied and the second condition is satisfied.
- the shake estimating unit 22 may determine that an abnormal shake is occurring in the estimation target when the state of satisfying the first condition and the state of satisfying the second condition continue for a set time or longer.
- the first weight vertical direction threshold LMv1 is set to a magnitude such that the estimated object does not collide with equipment in the hoistway 51 due to the shaking of the estimated object.
- the first weight horizontal direction threshold LMh1 is set to a magnitude that allows it to be estimated that the shaking of the estimation target is caused by the shaking of the building 50 .
- the operation control unit 21 sets the operation mode to the control operation mode.
- the motion estimation unit 22 It is determined that excessive shaking is occurring in
- the operation control unit 21 stops the car 15 at the nearest floor without changing the operation mode to the control operation mode. stop driving.
- a state in which the horizontal acceleration ACh1 of the car 15 is less than the second car horizontal direction threshold value LCh2 and the horizontal acceleration AMh1 of the counterweight 16 is less than the second weight horizontal direction threshold value LMh2 is defined as the third condition satisfaction state. .
- the second car horizontal threshold LCh2 and the second weight horizontal threshold LMh2 are thresholds for detecting that the shaking of the building 50 has stopped.
- the shake estimation unit 22 may determine that the state of satisfying the third condition has been reached when the state of satisfying the third condition continues for a set time or longer.
- FIG. 7 is a flow chart showing the operation of the control device 20 of FIG. The controller 20 repeatedly executes the process of FIG. 7 during normal operation of the car 15 .
- step S201 the control device 20 determines whether or not the first condition is satisfied. If the first condition is not satisfied, the control device 20 maintains the normal operation mode in step S207 and terminates the process.
- control device 20 determines in step S202 whether or not the second condition is satisfied. If the second condition is not satisfied, the control device 20 maintains the normal operation mode in step S207 and terminates the process.
- control device 20 moves the car 15 to the nearest floor and stops it in step S203. Then, the passengers in the car 15 are moved to the landing and the car 15 is emptied.
- step S204 the control device 20 determines if the vertical acceleration ACv1 of the car 15 is less than the second car vertical threshold LCv2 and the vertical acceleration AMv1 of the counterweight 16 is less than the second weight vertical threshold LMv2. determine whether there is If the vertical acceleration ACv1 of the car 15 is less than the second car vertical direction threshold LCv2 and the vertical acceleration AMv1 of the counterweight 16 is less than the second weight vertical direction threshold LMv2, the control device 20, in step S205, Carry out controlled operation.
- control device 20 moves the car 15 to a non-resonant floor and stops it with the door closed.
- step S206 the control device 20 controls the horizontal acceleration ACh1 of the car 15 to be less than the second car horizontal threshold LCh2 and the horizontal acceleration AMh1 of the counterweight 16 to be less than the second weight horizontal threshold LMh2. Determine if it happened. If the conditions that the horizontal acceleration ACh1 of the car 15 is less than the second car horizontal direction threshold LCh2 and the horizontal acceleration AMh1 of the counterweight 16 is less than the second weight horizontal direction threshold LMh2 are not satisfied, the control device 20 returns to the process of step S204.
- step S204 if the vertical acceleration ACv1 of the car 15 is greater than or equal to the second car vertical direction threshold LCv2, the control device 20 suspends the operation of the car 15 in step S208. Further, when the vertical acceleration AMv1 of the counterweight 16 is equal to or greater than the second weight vertical direction threshold LMv2 in step S204, the control device 20 also suspends the operation of the car 15 in step S208.
- step S209 the control device 20 determines whether or not the restoration work by the maintenance personnel has been completed. The control device 20 continues to suspend operation of the car 15 until the restoration work is completed. When the restoration work is completed, the control device 20 returns the operation mode to the normal operation mode in step S207, and terminates the process.
- the configuration and operation of the elevator system are the same as those of the first embodiment, except for the configurations shown in FIGS. 5 and 6 and the operation shown in FIG.
- the shake estimation unit 22 determines that an abnormal shake is occurring in the estimation target object. Therefore, it is possible to improve the determination accuracy of abnormal shaking of the estimation target. As a result, deterioration of service due to unnecessary control operation can be suppressed.
- Embodiment 3 Next, an elevator system according to Embodiment 3 will be described.
- the elevator system main body of Embodiment 3 has two or more elevator devices.
- the shake estimator in each elevator device also refers to signals from acceleration detectors in other elevator devices when estimating the amount of shake of the corresponding estimation target.
- the lifting bodies in each elevator device are both the car and the counterweight.
- the shake estimation unit in each elevator device determines that an abnormal shake is occurring in the estimated object when the first condition is satisfied and the second condition is satisfied. At this time, the shake estimator 22 may determine that an abnormal shake is occurring in the estimation object when the state of satisfying the first condition and the state of satisfying the second condition continue for a set time or longer.
- the first condition satisfaction state is at least one of the condition that the vertical acceleration of the corresponding car is equal to or greater than the first car vertical direction threshold and the condition that the vertical acceleration of the corresponding counterweight is equal to or greater than the first weight vertical direction threshold. one is satisfied.
- the second condition satisfaction state is that the horizontal acceleration of two or more elevators among the elevators in all the elevator devices is equal to or greater than the corresponding threshold of the first car horizontal direction threshold and the first weight horizontal direction threshold. state.
- FIG. 8 is a schematic configuration diagram showing an example of an elevator system according to Embodiment 3.
- FIG. 9 is a block diagram showing a control system of the elevator system of FIG. 8. FIG.
- each elevator device 31, 31a is provided in the building 50. That is, the elevator system main body 30 of FIG. 8 has two elevator devices 31 and 31a.
- the structure of each elevator device 31, 31a is the same as that of the elevator device 31 of the second embodiment.
- the shake estimator 22 also refers to signals from the car acceleration detector 19a and the weight acceleration detector 23a when estimating the amount of shake of the estimation object included in the elevator device 31.
- the shake estimator 22a also refers to signals from the car acceleration detector 19 and the weight acceleration detector 23 when estimating the amount of shake of the estimation object included in the elevator device 31a.
- the state of satisfying the first condition in the shake estimation unit 22 of the elevator device 31 is as follows. That is, the first condition satisfaction state includes the condition that the vertical acceleration ACv1 of the car 15 is equal to or greater than the first car vertical direction threshold LCv1, and the condition that the vertical acceleration AMv1 of the counterweight 16 is equal to or greater than the first weight vertical direction threshold LMv1. is satisfied.
- the first condition satisfaction state in the shake estimation unit 22a of the elevator device 31a is as follows. That is, the first condition satisfaction state includes the condition that the vertical acceleration ACv1 of the car 15a is equal to or greater than the first car vertical direction threshold LCv1, and the condition that the vertical acceleration AMv1 of the counterweight 16a is equal to or greater than the first weight vertical direction threshold LMv1. is satisfied.
- the state of satisfying the second condition in each of the shake estimation unit 22 and the shake estimation unit 22a is as follows. That is, the second condition satisfaction state is that the horizontal accelerations ACh1 or AMh1 of two or more of the car 15, the counterweight 16, the car 15a, and the counterweight 16a are equal to or greater than the corresponding horizontal threshold LCh1 or LMh1. state.
- the shake estimator 22 determines that an abnormal shake is occurring in the estimated object included in the elevator device 31 when the first condition is satisfied and the second condition is satisfied.
- the shake estimator 22a determines that the estimated object included in the elevator device 31a is abnormally shaken.
- the configuration and operation of the elevator system are the same as in the second embodiment, except that the elevator system main body has two or more elevator devices and the function of the sway estimator in each elevator device.
- the sway estimator in each elevator device also refers to signals from acceleration detectors in other elevator devices when estimating the sway amount of the corresponding estimation target. Therefore, it is possible to improve the detection accuracy of the shaking of the building 50 and improve the accuracy of estimating the amount of shaking of the estimation target.
- the shake estimating unit in each elevator device refers to the horizontal acceleration of the elevator in all elevator devices when determining whether or not the corresponding estimation object is abnormally shaking. Therefore, the detection accuracy of the shaking of the building 50 can be further improved, and the estimation accuracy of the shaking amount of the estimation target can be further improved.
- the elevator system main body 30 may include three or more elevator devices 31 .
- the elevator system main body 30 may include two or more elevator devices 31 .
- the estimated object may be a speed governor rope (not shown).
- the estimation target may be multiple belts. That is, the estimated object is a rope or belt.
- a device acceleration detector is provided in another device in contact with the estimation target, for example, the balance wheel 18, and when estimating the amount of shaking of the estimation target, the device acceleration detector You may also refer to signals from
- the layout of the elevator device 31 is not limited to the layout of FIG.
- the roping scheme may be a 2:1 roping scheme.
- the elevator device 31 may be a machine room-less elevator, a double-deck elevator, or a one-shaft multi-car elevator.
- the one-shaft multi-car system is a system in which an upper car and a lower car placed directly below the upper car independently ascend and descend a common hoistway.
- FIG. 10 is a configuration diagram showing a first example of a processing circuit that implements each function of the control device 20 of Embodiments 1-3.
- the processing circuit 100 of the first example is dedicated hardware.
- the processing circuit 100 is, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof. Applicable. Further, each function of the control device 20 may be realized by an individual processing circuit 100, or each function may be collectively realized by the processing circuit 100. FIG.
- FIG. 11 is a configuration diagram showing a second example of a processing circuit that realizes each function of the control device 20 of Embodiments 1-3.
- the processing circuit 200 of the second example comprises a processor 201 and a memory 202 .
- each function of the control device 20 is implemented by software, firmware, or a combination of software and firmware.
- Software and firmware are written as programs and stored in memory 202 .
- the processor 201 implements each function by reading and executing a program stored in the memory 202 .
- the program stored in the memory 202 causes the computer to execute the procedure or method of each unit described above.
- the memory 202 is, for example, RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable and volatile or volatile semiconductor memory.
- the memory 202 also includes magnetic disks, flexible disks, optical disks, compact disks, mini disks, DVDs, and the like.
- the processing circuit can implement the functions of each unit described above by means of hardware, software, firmware, or a combination thereof.
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Abstract
Description
実施の形態1.
図1は、実施の形態1によるエレベーターシステムを示す概略の構成図である。図1において、建物50には、昇降路51及び機械室52が設けられている。機械室52は、昇降路51の上に設けられている。
次に、図5は、実施の形態2によるエレベーターシステムを示す概略の構成図である。実施の形態2のエレベーター装置31は、実施の形態1のエレベーター装置31と同様の構成に加え、おもり加速度検出器23を有している。
次に、実施の形態3のエレベーターシステムについて説明する。実施の形態3のエレベーターシステム本体は、2つ以上のエレベーター装置を有している。各エレベーター装置における揺れ推定部は、対応する推定対象物の揺れ量を推定する際に、他のエレベーター装置における加速度検出器からの信号も参照する。
Claims (10)
- 建物に設けられているエレベーター装置を有しているエレベーターシステム本体
を備え、
前記エレベーター装置は、
かご、
釣合おもり、
前記かご及び前記釣合おもりの少なくともいずれか一方である昇降体に生じる鉛直方向の加速度である鉛直加速度と、前記昇降体に生じる水平方向の加速度である水平加速度とを検出する加速度検出器、
前記昇降体に接続されており、かつ可撓性を有している長尺物である推定対象物、及び
制御装置
を有しており、
前記制御装置は、揺れ推定部を有しており、
前記揺れ推定部は、前記鉛直加速度と前記水平加速度とに基づいて、前記推定対象物の揺れ量を推定するとともに、前記推定対象物に異常な揺れが生じているかどうかを判定するエレベーターシステム。 - 前記揺れ推定部には、それぞれ前記建物の一次固有周期に基づいて、第1周波数帯域及び第2周波数帯域が設定されており、
前記揺れ推定部は、前記加速度検出器によって検出された前記水平加速度から前記第1周波数帯域の成分を抽出するフィルター処理を施すとともに、前記加速度検出器によって検出された前記鉛直加速度から前記第2周波数帯域の成分を抽出するフィルター処理を施し、
前記揺れ推定部は、フィルター処理後の前記鉛直加速度と、フィルター処理後の前記水平加速度とに基づいて、前記推定対象物の揺れ量を推定するとともに、前記推定対象物に異常な揺れが生じているかどうかを判定する請求項1記載のエレベーターシステム。 - 前記揺れ推定部には、前記鉛直加速度の判定基準である第1鉛直方向閾値と、前記水平加速度の判定基準である第1水平方向閾値とが設定されており、
前記揺れ推定部は、前記鉛直加速度が前記第1鉛直方向閾値以上であり、かつ前記水平加速度が前記第1水平方向閾値以上である場合、前記推定対象物に異常な揺れが生じていると判定する請求項1又は請求項2に記載のエレベーターシステム。 - 前記制御装置は、
通常運転モード及び管制運転モードを含む複数の運転モードにより、前記かごの運転を制御する運転制御部
をさらに有しており、
前記管制運転モードは、前記推定対象物の揺れを抑制する位置に前記かごを移動させる前記運転モードであり、
前記揺れ推定部により前記推定対象物に異常な揺れが生じていると判定されると、前記運転制御部は、前記運転モードを前記管制運転モードとする請求項3記載のエレベーターシステム。 - 前記揺れ推定部には、前記鉛直加速度の判定基準として、前記第1鉛直方向閾値よりも大きい第2鉛直方向閾値が設定されており、
前記揺れ推定部は、前記鉛直加速度が前記第2鉛直方向閾値以上である場合、前記推定対象物に過大な揺れが生じていると判定し、
前記運転制御部は、前記揺れ推定部により前記推定対象物に過大な揺れが生じていると判定されると、前記運転モードを前記管制運転モードにせず、前記かごを最寄階に停止させ、前記かごの運転を休止させる請求項4記載のエレベーターシステム。 - 前記揺れ推定部には、前記水平加速度の判定基準として、前記第1水平方向閾値よりも小さい第2水平方向閾値が設定されており、
前記運転制御部は、前記運転モードが前記管制運転モードであるとき、前記揺れ推定部により前記水平加速度が前記第2水平方向閾値未満になったと判定されると、前記運転モードを前記通常運転モードに戻す請求項4又は請求項5に記載のエレベーターシステム。 - 前記昇降体は、前記かご及び前記釣合おもりの両方であり、
前記揺れ推定部は、前記かごの前記鉛直加速度及び前記水平加速度と、前記釣合おもりの前記鉛直加速度及び前記水平加速度とに基づいて、前記推定対象物の揺れ量を推定するとともに、前記推定対象物に異常な揺れが生じているかどうかを判定する請求項1から請求項6までのいずれか1項に記載のエレベーターシステム。 - 前記昇降体は、前記かご及び前記釣合おもりの両方であり、
前記揺れ推定部には、前記かごの前記鉛直加速度の判定基準である第1かご鉛直方向閾値と、前記かごの前記水平加速度の判定基準である第1かご水平方向閾値と、前記釣合おもりの前記鉛直加速度の判定基準である第1おもり鉛直方向閾値と、前記釣合おもりの前記水平加速度の判定基準である第1おもり水平方向閾値とが設定されており、
前記かごの前記鉛直加速度が前記第1かご鉛直方向閾値以上である条件と、前記釣合おもりの前記鉛直加速度が前記第1おもり鉛直方向閾値以上である条件との少なくともいずれか一方が満たされ、かつ、前記かごの前記水平加速度が前記第1かご水平方向閾値以上であり、前記釣合おもりの前記水平加速度が前記第1おもり水平方向閾値以上であるとき、前記揺れ推定部は、前記推定対象物に異常な揺れが生じていると判定する請求項1又は請求項2に記載のエレベーターシステム。 - 前記エレベーターシステム本体は、2つ以上の前記エレベーター装置を有しており、
各前記エレベーター装置における前記揺れ推定部は、対応する前記推定対象物の揺れ量を推定する際に、他の前記エレベーター装置における前記加速度検出器からの信号も参照する請求項1又は請求項2に記載のエレベーターシステム。 - 各前記エレベーター装置における前記昇降体は、前記かご及び前記釣合おもりの両方であり、
各前記エレベーター装置における前記揺れ推定部には、前記かごの前記鉛直加速度の判定基準である第1かご鉛直方向閾値と、前記かごの前記水平加速度の判定基準である第1かご水平方向閾値と、前記釣合おもりの前記鉛直加速度の判定基準である第1おもり鉛直方向閾値と、前記釣合おもりの前記水平加速度の判定基準である第1おもり水平方向閾値とが設定されており、
各前記エレベーター装置における前記揺れ推定部は、対応する前記かごの前記鉛直加速度が前記第1かご鉛直方向閾値以上である条件と、対応する前記釣合おもりの前記鉛直加速度が前記第1おもり鉛直方向閾値以上である条件との少なくともいずれか一方が満たされ、かつ、全ての前記エレベーター装置における前記昇降体のうちの2つ以上の前記昇降体の前記水平加速度が、前記第1かご水平方向閾値及び前記第1おもり水平方向閾値のうちの対応する閾値以上であるとき、対応する前記推定対象物に異常な揺れが生じていると判定する請求項9記載のエレベーターシステム。
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JP2015009991A (ja) * | 2013-07-02 | 2015-01-19 | 三菱電機株式会社 | エレベータロープの揺れを低減する方法およびエレベータシステム |
JP6339256B1 (ja) * | 2017-02-28 | 2018-06-06 | 東芝エレベータ株式会社 | エレベータのロープ振れ検出システム |
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JP2011051739A (ja) * | 2009-09-02 | 2011-03-17 | Toshiba Elevator Co Ltd | エレベータの制御装置 |
JP2015009991A (ja) * | 2013-07-02 | 2015-01-19 | 三菱電機株式会社 | エレベータロープの揺れを低減する方法およびエレベータシステム |
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