JP6494864B2 - Elevator system and control method thereof - Google Patents

Description

  The present invention relates to an elevator system having a plurality of elevators and a group management device that manages these elevators as a group, and a control method therefor.

  Generally, in high-rise buildings, it is known that low-period shaking continuously occurs due to, for example, long-period vibration or strong wind caused by an earthquake. For example, in an elevator device with a long car up and down stroke, if the main rope swings due to the shaking of the building when the car is stopped on the lowest floor, the amplitude of the main rope when the car starts to travel is small. However, the car moves to the vicinity of the upper floor and the car side portion of the main rope becomes shorter, so that the frequency of the main rope matches the resonance frequency of the car, and the vibration of the car increases and the riding comfort deteriorates.

  On the other hand, in a conventional elevator control device, a non-service car among a plurality of cars is put on standby at a resonance position. When the amount of shaking of the long object connected to the car waiting at the resonance position exceeds the set level, the car waiting at the resonance position is caused to travel to the non-resonance position (see, for example, Patent Document 1). ).

  In addition, in a conventional elevator seismic control operation system, when an earthquake early warning distributed by the Japan Meteorological Agency is received, the car is moved to a zone where the influence of long-period shaking is small before the earthquake shaking arrives (for example, Patent Document 2). reference).

  Furthermore, in another conventional elevator control device, when an abnormality in the elevator is detected, the elevator car in which the abnormality is detected is stopped on the nearest floor. In addition, an elevator having a car that can accommodate all passengers in the elevator car in which an abnormality has been detected is selected from a plurality of other normal elevators. Then, the selected elevator car is caused to travel to the floor where the elevator car in which the abnormality is detected is stopped (for example, see Patent Document 3).

Japanese Patent No. 5743027 JP 2007-153520 A JP 2012-46310 A

  In the conventional elevator control device disclosed in Patent Document 1, when a swing of a long object is detected, the car simply travels to a non-resonant position. The passenger is lowered from the car and waits at the landing until there is no shaking of the long object, or the passenger is also moved to the non-resonant position, and the convenience of the passenger is low. In particular, since the number of high-rise buildings has increased in recent years, the shaking of the top floor of the building tends to increase, and even if the wind is not so strong, rope swinging has started to occur. For this reason, in the control method of simply running the car to the non-resonant position, the convenience for passengers is greatly reduced.

  In addition, the conventional seismic control operation system disclosed in Patent Document 2 can handle only when an earthquake early warning is received, and simply moves the car to a zone where the influence of long-period shaking is small, which is convenient for passengers. The nature is low.

  Further, in the conventional elevator control device disclosed in Patent Document 3, since the swing of the building and the position of the car are not considered when selecting the elevator, the rope swing caused by the swing of the building, and this rope swing Can not cope with car vibration due to.

  The present invention has been made in order to solve the above-described problems, and provides an elevator system and a control method thereof that can prevent deterioration in the riding comfort of a car due to rope vibration while suppressing a decrease in convenience. The purpose is to obtain.

The elevator system according to the present invention includes a car that moves up and down a hoistway provided in a building, a rope connected to the car, a hoisting machine that raises and lowers the car, and a control device that controls the hoisting machine. And a group management device that manages the elevators as a group, the group management device or control device has a rope resonance zone that is a car movement area where the rope is likely to swing due to the shaking of the building In the group management device, there is a rope resonance car, which is a car that has detected a building shake above the building shake setting level and has been waiting for a set waiting time on the stop floor in the rope resonance zone. In this case, the car located outside the rope resonance zone is moved to the stop floor where the rope resonance car is waiting as an additional assigned car.
In addition, the elevator system control method according to the present invention includes a car that moves up and down a hoistway provided in a building, a rope connected to the car, a hoisting machine that elevates and lowers the car, and a hoisting machine. A control method for an elevator system including a plurality of elevators each having a control device for controlling, wherein a car moving area where the rope is likely to be shaken by the shaking of the building is set as a rope resonance zone and the building swing level or more is exceeded. A step of determining whether there is a rope resonance car that is a car waiting for a set waiting time or more on the stop floor in the rope resonance zone when the shaking of the building is detected, and if there is a rope resonance car, A step of moving a car located outside the rope resonance zone as an additional assigned car to a stop floor where the rope resonance car is waiting.

  In the elevator system of the present invention and its control method, when the rope resonant car exists, the car located outside the rope resonant zone is moved as an additional assigned car to the stop floor where the rope resonant car is waiting. While suppressing a decrease in convenience, it is possible to prevent deterioration of the riding comfort of the car due to rope vibration.

1 is a configuration diagram illustrating an elevator system according to a first embodiment of the present invention. It is a graph which shows the relationship between the primary natural frequency of the cage | basket | car part of the main rope of FIG. 1, and the primary natural frequency of the left-right direction of a cage | basket | car, and a car position. It is explanatory drawing which shows the control effective zone set to the group management apparatus of FIG. It is a block diagram which shows the function of the group management apparatus of FIG. It is a flowchart which shows operation | movement of the control operation implementation part of FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
1 is a block diagram showing an elevator system according to Embodiment 1 of the present invention. In the figure, the elevator system includes a plurality of elevators 100 and a group management device 200 that manages these elevators 100 as a group. In FIG. 1, only one elevator 100 is shown for simplicity.

  The configuration of each elevator 100 will be described. A hoistway 1 is provided in the building. A machine room 2 is provided above the hoistway 1 in the building. In the machine room 2, a hoisting machine 3, a deflector 4, and a control device 5 are installed. The hoisting machine 3 includes a drive sheave 6, a hoisting machine motor (not shown) that rotates the driving sheave 6, and a hoisting machine brake (not shown) that brakes the rotation of the driving sheave 6.

  Although only one drive sheave 6 and the deflecting wheel 4 are shown in FIG. 1, a plurality of main ropes 7 are wound around. A car 8 is connected to the first end of the main rope 7. A counterweight 9 is connected to the second end of the main rope 7.

  The car 8 and the counterweight 9 are suspended in the hoistway 1 by the main rope 7 and are moved up and down in the hoistway 1 by rotating the drive sheave 6. That is, the hoisting machine 3 raises and lowers the car 8 and the counterweight 9 through the main rope 7. The control device 5 moves the car 8 up and down at a set speed by controlling the rotation of the hoisting machine 3.

  In the hoistway 1, a pair of car guide rails 10 that guide the raising and lowering of the car 8 and a pair of counterweight guide rails 11 that guide the raising and lowering of the counterweight 9 are installed. The car 8 is provided with a plurality of roller guide devices (not shown) in contact with the car guide rail 10. Each roller guide device has a plurality of guide rollers that roll along the car guide rail 10 and a plurality of pressing springs that press the guide rollers against the car guide rail 10.

  Although only one is shown between the car 8 and the counterweight 9 in FIG. 1, a plurality of compen ropes 12 are suspended. The compensation rope 12 compensates for the mass of the main rope 7. The first end of the compen- sion rope 12 is connected to the lower part of the car 8. The second end of the compen- sion rope 12 is connected to the lower part of the counterweight 9.

  In the lower part in the hoistway 1, a pair of compenand rope tensioning wheels 13 a and 13 b for applying tension to the compenand rope 12 are provided. In the first embodiment, the elevators 100 of all the units have the same configuration.

  FIG. 2 is a graph showing the relationship between the primary natural frequency of the car side portion of the main rope 7 of FIG. 1 and the primary natural frequency in the left-right direction of the car 8 and the car position. In the approximate expression in the figure, fr is the primary natural frequency of the car side portion of the main rope 7, L is the portion of the main rope 7 between the car 8 and the drive sheave 6, that is, the length of the car side portion, T Is the rope tension per piece, and ρ is the rope line density per piece.

  The primary natural frequency of the main rope 7 changes depending on the car position because the distance from the car 8 to the drive sheave 6 changes depending on the car position. That is, as the car 8 approaches the top floor, the length L decreases, and the primary natural frequency fr of the car side portion of the main rope 7 tends to increase in inverse proportion to the length L.

  On the other hand, the primary natural frequency fc1 in the left-right direction of the car 8 that is guided by the car guide rail 10 through the roller guide device and moves up and down varies depending on the car position and the weight of the car 8 and the support rigidity of the roller guide device. Therefore, the value is constant with respect to the car position. The same applies to the front-rear direction of the car 8, and the primary natural frequency of the car 8 in the front-rear direction is also a constant value with respect to the car position.

  For example, when the car 8 is located at or near the lowermost floor, the main rope 7 is shaken as the building shakes, and if the car travels to the upper floor in that state, the main rope 7 approaches the uppermost floor. Although the amplitude of the rope 7 is reduced, the vibration frequency of the main rope 7 is increased. And it is thought that the horizontal external force according to the tension | tensile_strength of the main rope 7 acts on the cage | basket | car 8, and the vibration of the cage | basket | car 8 becomes large in the position where a rope frequency and a cage | basket | car frequency correspond.

  Car position information is input to the group management device 200 from the control device 5 of each elevator 100. In the group management apparatus 200, a plurality of rope resonance zones are set in advance. The rope resonance zone is a car movement area in the hoistway 1 where the main rope 7 or the compen- sion rope 12 is likely to be shaken by the shaking of the building when the car 8 is located in the zone.

  In this example, as shown in FIG. 3, a main rope resonance zone 1a, a first compensation rope resonance zone 1b, and a second compensation rope resonance zone 1c are set as the rope resonance zones.

  The main rope resonance zone 1a is an area where the car side portion of the main rope 7 is likely to resonate due to the shaking of the building when the car 8 exists in the zone. The first and second compensation rope resonance zones 1b and 1c are regions in which the cage side portion of the compensation rope 12 is likely to resonate due to the shaking of the building when the cage 8 is present in the zone.

  In this example, the main rope resonance zone 1a is set near the lowest floor. Further, the first compensation rope resonance zone 1b is set near the intermediate floor. Furthermore, the second compensation rope resonance zone 1c is set near the top floor. These resonance zones 1a, 1b, and 1c are different areas in the hoistway 1 and are set at intervals in the vertical direction.

  The range in the vertical direction of each rope resonance zone 1a, 1b, 1c may be only on the first floor or across multiple floors. It can be set as appropriate according to the relationship.

  The group management device 200 and each control device 5 are configured by independent computers. The group management device 200 performs the control operation when a swing of the building swing set level or more occurs in the building and the control operation execution condition is satisfied. The execution condition of the control operation is that there is a rope resonance car that is a car 8 that has been waiting for a standby set time or more on the stop floor in the rope resonance zone 1a, 1b, or 1c.

  The standby setting time is a time when the main rope 7 or the compensation rope 12 resonates and it is estimated that noise or car vibration adversely affects the user.

  In the control operation, the group management apparatus 200 includes at least one elevator car 8 of the elevators 100 that does not include the rope resonance car, that is, at least one car in the same bank located outside the rope resonance zone. 8 is selected as the additional assigned car and moved to the stop floor where the rope resonant car is waiting.

  FIG. 4 is a block diagram showing functions of the group management apparatus 200 of FIG. The group management device 200 includes a control operation execution unit 21 and a evacuation operation number determination unit 26. The control operation execution unit 21 receives a signal from the building shake detector 14 that detects the building shake. As the building shake detector 14, for example, a long-period vibration detector that senses long-period vibration due to an earthquake is used.

  The control operation execution unit 21 determines whether or not the control operation is necessary when the building shake detector 14 detects a shake of the building that is equal to or higher than the building shake setting level, and determines that the control operation is necessary. Carry out driving.

  The control operation execution unit 21 includes an additional allocation execution determination unit 22, an additional allocation command unit 23, a passenger eviction command unit 24, and a non-resonant zone travel command unit 25.

  The additional allocation execution determination unit 22 determines whether or not the execution condition of the control operation is satisfied, and determines that the additional allocation in the control operation is performed when the execution condition is satisfied. The additional allocation execution determination unit 22 includes a resonance zone determination unit 22a, a standby time determination unit 22b, and a boarding / alighting time estimation unit 22c.

  The resonance zone determination unit 22a determines whether the car 8 exists in the rope resonance zone 1a, 1b, or 1c in any of the elevators 100. The standby time determination unit 22b measures the time that the car 8 is waiting in the rope resonance zone 1a, 1b, or 1c, and determines whether or not the standby set time has been reached. The boarding / alighting time estimation unit 22c estimates the boarding / alighting time of passengers in the rope resonance zone 1a, 1b, or 1c from information on at least one of the size of the car 8, the door opening / closing speed, the number of passengers, and the number of passengers getting off. .

  The additional allocation execution determination unit 22 determines whether there is a resonance floor standby car that is the car 8 waiting on the stop floor in the rope resonance zone 1a, 1b, or 1c when a vibration of a building swing set level or higher occurs in the building. If there is a resonance floor standby car, it is determined whether or not the standby time of the resonance floor standby car is likely to reach the standby set time. It is determined that additional allocation is performed.

  Further, the additional allocation execution determination unit 22 determines whether or not the standby time of the resonance floor standby car is likely to reach the standby set time from the boarding / alighting time estimated by the boarding / alighting time estimation unit 22c. For example, when the size of the car is large, when the door opening / closing speed is slow, when the number of passengers and the number of passengers getting off are large, it is estimated that the boarding / exiting time becomes long, and it is determined that there is a high possibility of reaching the standby setting time.

  When it is determined that additional allocation is to be performed by detecting the rope resonance car, the additional allocation command unit 23 selects the additional allocation car and immediately moves the additional allocation car to the floor where the rope resonance car is waiting. Further, when it is determined that the additional allocation is performed before the standby setting time is reached, the additional allocation command unit 23 selects the additional allocation car, and the resonance floor standby car is waiting for the selected additional allocation car. Approach the stop floor.

  Further, the additional allocation command unit 23 moves the additional allocation car closer to the stop floor where the resonance floor standby car is waiting, and if the standby time of the resonance floor standby car has not reached the standby set time, the additional allocation car is assigned. It stands by at the stop floor in the area adjacent to the rope resonance zone 1a, 1b or 1c in the hoistway 1.

  Furthermore, the additional allocation command unit 23 counts and stores the number of times the rope resonance car has moved to the stop floor where the additional allocation car is waiting for each car 8, and suppresses the deviation of the number of additional allocation cars. Select an additional assigned car to

  When it is determined that the control operation is to be performed, the passenger expulsion command unit 24 gives a rope resonance car to the passenger in the rope resonance car and the passenger who is about to ride the rope resonance car by an announcement and / or display. Is stopped, and an additional assigned car is urged to be used, that is, a passenger eviction operation is performed.

  The non-resonant zone travel command unit 25 attenuates the swing of the main rope 7 or the compen- sion rope 12 after the additional assigned car arrives at the stop floor where the rope resonant car is waiting and drives out the passenger from the rope resonant car. The rope resonance car is moved to a region outside the rope resonance zones 1a, 1b, 1c, that is, the stop floor of the non-resonance zone, and is put on standby.

  The number of evacuation operation times determination unit 26 counts and stores the number of times the car is moved to the stop floor outside the rope resonance zones 1a, 1b, and 1c as a rope resonance car and waits for each car 8. The group management device 200 selects the car 8 to be dispatched to the stop floor in the rope resonance zone 1a, 1b or 1c during normal operation so as to suppress the deviation of the number of times of the rope resonance car.

  FIG. 5 is a flowchart showing the operation of the control operation execution unit 21 of FIG. The control operation execution unit 21 periodically executes the process of FIG. 5 when a swing greater than the building swing set level is detected during normal operation. In the process of FIG. 5, it is first determined whether there is a resonance floor standby car (step S1). If there is no resonance floor standby car, normal operation is continued.

  If there is a resonance floor standby car, it is determined whether the resonance floor standby car door and the corresponding landing door are open, that is, whether the passenger is getting on and off (step S2). If not open, continue normal operation.

  When it is in the open state, the time that the resonance floor standby car waits on the stop floor is estimated (step S3). Then, it is determined whether or not the estimated standby time is equal to or longer than the standby set time (step S4).

  If the estimated standby time is equal to or longer than the standby set time, additional allocation is performed (step S5). That is, the additional assigned car is selected and moved to the stop floor adjacent to the rope resonance zone 1a, 1b or 1c. At this time, by moving the additional assigned car at a low speed, it is possible to shorten the time for stopping and waiting at the stop floor adjacent to the rope resonance zone 1a, 1b or 1c.

  Thereafter, it is determined whether or not the standby time of the resonance floor standby car has reached the standby set time (step S6). If the waiting set time has not been reached, the additional assigned car is put on standby at the stop floor adjacent to the rope resonance zone 1a, 1b, or 1c, that is, placed outside the zone (step S7).

  When the standby time of the resonance floor standby car reaches the standby set time, the resonance floor standby car is recognized as a rope resonance. Then, an in-zone movement command, that is, a command to move the additional allocated car to the stop floor where the rope resonant car is waiting is generated (step S8). Then, it is determined whether or not the additional allocated car has arrived at the stop floor where the rope resonant car is waiting (step S9).

  When the arrival of the additional allocated car is confirmed, the passenger eviction operation by the passenger eviction command unit 24 is performed (step S10). When there are no passengers in the rope resonant car, the rope resonant car is turned off and the rope resonant car door is closed.

  Thereafter, the rope resonant car is moved to the stop floor of the non-resonant zone (step S11). Then, after the rope resonance car is made to wait for the attenuation set time which is a time during which the swing of the main rope 7 or the compensation rope 12 is sufficiently attenuated (step S12), the normal operation is resumed.

  On the other hand, if the standby time estimated in step S3 is less than the standby set time, it is checked whether the standby time of the resonance floor standby car has reached the standby set time (step S13). If the standby set time has not been reached, the process returns to step S1.

  If the estimated standby time is less than the standby set time but the actual standby time has reached the standby set time, additional allocation is performed (step S14). In this case, an in-zone movement command is immediately generated, and the additional assigned car is moved to the stop floor where the rope resonant car is waiting.

  In such an elevator system and its control method, if there is a rope resonance car, the car 8 located outside the rope resonance zone is moved as an additional assigned car to the stop floor where the rope resonance car is waiting. Further, it is possible to prevent deterioration of the riding comfort of the car 8 due to rope vibration while suppressing a decrease in convenience.

  Moreover, not only can the deterioration of the riding comfort caused by the vibration of the car 8 or the generation of noise due to the swing of the main rope 7 or the compen- sion rope 12 itself, but also the rope resonance car can move to move the rope frequency and the car frequency. It is also possible to prevent the vibration of the car 8 from becoming large at a position where the two and the two coincide.

  That is, since the roll of the main rope 7 or the compensation rope 12 is small in the additional allocation car, after stopping at the stop floor where the rope resonance car is waiting, the running is resumed with a standby time shorter than the standby setting time. If it moves out of the rope resonance zones 1a, 1b, 1c, even if it goes straight to the destination floor, the vertical vibration of the car 8 that deteriorates the riding comfort will not occur.

  In addition, at least one of the announcement and the display prompts the passengers of the rope resonance car to use the additional allocation car, so that the transfer from the rope resonance car to the additional allocation car can be performed more smoothly. it can.

  Furthermore, after the additional allocated car arrives at the stop floor where the rope resonance car is waiting, the rope resonance car is moved to the stop floor outside the rope resonance zone and made to wait. It can be attenuated earlier, and a reduction in the operating rate of the elevator 100 can be suppressed.

  Furthermore, the number of times that the rope resonance car is moved to the stop floor outside the rope resonance zone and made it stand by is counted and stored for each car 8, and the rope during normal operation is controlled so as to suppress the deviation of the number of rope resonance cars. Since the car 8 to be dispatched to the stop floor in the resonance zone is selected, the resonance of the main rope 7 or the compensation rope 12 is concentrated on a specific elevator 100, and the evacuation operation outside the rope resonance zones 1a, 1b, 1c is concentrated. Can be prevented.

  In addition, if the standby time of the resonant floor standby car is estimated and the estimated standby time is likely to reach the standby setting time, an additional assigned car is selected in advance, and the selected additional assigned car is selected by the resonant floor standby car. Since it is closer to the waiting stop floor, the additional assigned car can be moved to the stopping floor where the rope resonance car is waiting earlier, and the waiting time of passengers who are going to use the rope resonance car is reduced. Can do.

  Further, after the additional assigned car is brought close to the stop floor where the resonant floor standby car is waiting, if the standby time of the resonant floor standby car has not reached the standby set time, the additional assigned car is connected to the rope resonant zone 1a, 1b or Since the standby is performed in the area adjacent to 1c, it is possible to prevent the main rope 7 or the compen- sion rope 12 connected to the additional assigned car from resonating.

  Furthermore, the group management apparatus 200 estimates and estimates the passenger boarding / alighting time of the resonance floor standby car from at least one of the size of the car 8, the door opening / closing speed, the number of passengers, and the number of passengers getting off. Since it is determined from the boarding / alighting time whether or not the standby time of the resonant floor standby car is likely to reach the standby set time, the standby time of the resonant floor standby car can be estimated more accurately.

  In addition, the number of times the rope resonance car is moved to the stop floor where it is waiting as an additional allocation car is counted and stored for each car 8, and the additional allocation car is selected so as to suppress the deviation of the number of additional allocation cars. Therefore, it is possible to prevent the number of activations as an additional assigned car from being concentrated on a specific elevator 100.

The rope resonance zone may be set in the control device 5 of each elevator 100. In this case, the group management apparatus 200 may receive information on the presence / absence of the resonance floor standby car from the control apparatus 5 and perform estimation of the standby time and determination of the presence / absence of the rope resonance car based on the information. Further, the estimation of the standby time and the determination of the presence or absence of the rope resonance car may be performed by the control device 5 of each elevator 100.
Further, the rope resonance zone may be set only for the main rope 7, for example, or may be set for a rope other than the main rope 7 and the compensation rope 12.

Further, estimation of the standby time of the resonance floor standby car and standby outside the zone may be omitted, and additional allocation may be performed after the rope resonance car is detected.
Furthermore, it is possible to omit the passenger eviction operation or to omit the retraction operation of the rope resonant car to the non-resonant zone.
It is also possible to omit the leveling of the number of additional allocations or to omit the leveling of the number of times of dispatch to the rope resonance zone.

  Further, in the above example, the normal operation is continued when it is not in the open state in step S2 of FIG. 5, but when the resonance floor standby car is in the door closed standby state, the standby set time elapses in that state. It may be determined whether or not. In this case, when the standby set time has elapsed in the door-closed standby state, the process moves to step S11 and waits for the attenuation set time in the non-resonant zone. If the door is opened before the standby set time has elapsed, the process moves to step S3.

Furthermore, the layout of each elevator 100 is not limited to the layout of FIG. For example, the present invention can be applied to a 2: 1 roping type elevator, an elevator in which a hoisting machine is disposed at the lower part of a hoistway, and an elevator using two or more counterweights.
In the above example, the main rope 7 and the compensation rope 12 have been described. However, the present invention may be applied to only one of them, and a rope connected to the car 8 such as a governor rope. If so, it is within the scope of the present invention. Further, a belt having a flat cross section is included in the rope according to the present invention if there is a possibility that the belt will resonate greatly due to the vibration of the building.
Furthermore, the present invention can be applied to all types of elevator devices such as shuttle elevators, machine room-less elevators, double deck elevators, and one-shaft multi-car elevators in which a plurality of cars are arranged in a common hoistway.

Claims (9)

Each car has a car that moves up and down a hoistway provided in a building, a rope connected to the car, a hoisting machine that raises and lowers the car, and a control device that controls the hoisting machine A plurality of elevators, and a group management device that manages the elevators as a group,
In the group management device or the control device, a rope resonance zone is set which is a cage moving region where the rope is likely to be shaken by the shaking of the building,
In the group management device, there is a rope resonance car, which is the car that has detected a building shake above a building shake setting level and has been waiting for a set waiting time on a stop floor in the rope resonance zone. In this case, the elevator system moves the car located outside the rope resonance zone to the stop floor where the rope resonance car is waiting as an additional assigned car.   The elevator system according to claim 1, wherein the group management device urges passengers of the rope resonance car to use the additional assigned car by at least one of announcement and display.   The group management device, after the additional allocated car arrives at a stop floor where the rope resonance car is waiting, moves the rope resonance car to a stop floor outside the rope resonance zone and waits. The elevator system according to claim 2.   The group management device counts and stores, for each car, the number of times that the rope resonance car has moved to a stop floor outside the rope resonance zone and waits for it, and suppresses the deviation of the number of times the rope resonance car becomes. The elevator system according to claim 3, wherein the car to be dispatched to a stop floor in the rope resonance zone during normal operation is selected.   In the group management device, there is a resonance floor waiting car which is a car waiting for a stop floor in the rope resonance zone in which a swing of the building shaking level or more is detected by the building shaking detector. And determining whether or not the standby time of the resonance floor standby car is likely to reach the standby set time, and if it is determined that it is high, select the additional allocation car and select the selected additional allocation The elevator system according to any one of claims 1 to 4, wherein a car is brought close to a stop floor where the resonance floor standby car is waiting.   The group management device, after approaching the additional allocation car to the stop floor where the resonance floor standby car is waiting, if the standby time of the resonance floor standby car does not reach the standby set time, the additional allocation car The elevator system according to claim 5, wherein a car is made to stand by in a region adjacent to the rope resonance zone in the hoistway.   The group management device estimates passengers' getting-on / off times of the resonance floor standby car from at least one of the car size, door opening / closing speed, number of passengers, and number of people getting off, and the estimated boarding / exiting time The elevator system according to claim 5 or 6, wherein a determination is made as to whether or not the standby time of the resonance floor standby car is likely to reach the standby set time.   The group management device counts and stores, for each car, the number of times the rope resonance car has moved to the stop floor on which the rope resonance car is waiting as the additional allocation car, and suppresses the deviation of the number of times corresponding to the additional allocation car The elevator system according to any one of claims 1 to 7, wherein the additional assigned car is selected as described above. Each car has a car that moves up and down a hoistway provided in a building, a rope connected to the car, a hoisting machine that raises and lowers the car, and a control device that controls the hoisting machine An elevator system control method comprising a plurality of elevators,
The cage moving area where the rope is likely to be shaken by the shaking of the building is used as the rope resonance zone, and when the building shake above the building shaking setting level is detected, the stop floor in the rope resonance zone is set to the standby set time or more. Determining whether there is a rope resonant car that is the waiting car; and, if the rope resonant car is present, the car located outside the rope resonant zone as an additional assigned car, A method for controlling an elevator system, comprising the step of moving a rope resonant car to a stop floor where the car is waiting.

Images