Elevator

Abstract

An elevator (10) is provided with: a car (11); a car lifting mechanism (25) that lifts and lowers the car (11); and a transmission / reception unit that receives an earthquake occurrence signal indicating the occurrence of an earthquake. When the transmission / reception unit receives the earthquake generation signal, the elevator car (11) performs a low-speed operation in which the elevator car (11) moves at a speed slower than the highest movement speed of the elevator car (11) during a normal operation in which the elevator car (11) moves at a speed lower than the highest movement speed of the elevator car (11) during a normal operation in which the elevator car (11) moves at a speed lower than the highest movement speed of the elevator car (11) during the normal operation. The elevator car (11) ascends and descends on the basis of landing input information input to elevator car call buttons (15) respectively provided in a plurality of landing (22) and elevator car input information input to destination floor designation buttons (16) provided in the elevator car (11).

Description

Technical Field

[0001] The present disclosure relates to elevators. Background Art

[0002] In the past, there is an elevator described in Patent Document 1. When the control device of this elevator receives an emergency earthquake warning, the car moves to a position where the landing door is not engaged. In this way, the engaging unit of the car door and the landing door is prevented from being damaged by the shaking of the earthquake.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-193149 Summary of the invention

[0006] Problems to be solved by the invention

[0007] When an earthquake occurs, the frequency of the building's shaking coincides with the resonant frequency of the long objects of the elevator, such as ropes or control cables, and thus the vibration of the long objects is amplified, and sometimes the long objects are hooked on the hoistway equipment installed in the hoistway. Therefore, the object of the present disclosure is to provide an elevator that can prevent the long objects from being hooked on the hoistway equipment in the event of an earthquake.

[0008] Means for solving problems

[0009] In order to solve the above-mentioned problems, the elevator disclosed in the present invention comprises: a car; a car lifting mechanism which lifts and lowers the car; and a receiving unit which receives an earthquake occurrence signal indicating the occurrence of an earthquake. When the receiving unit receives the earthquake occurrence signal, the car is operated at a low speed. During the low-speed operation of the car, the car moves at a speed slower than the maximum moving speed of the car during normal operation. During the normal operation, the car is lifted and lowered based on floor station input information input to floor station operating units respectively arranged at multiple floor stations and car input information input to a destination floor designation operating unit arranged in the car.

[0010] In addition, except when the car speed becomes 0 at the turnaround position, the state where the car speed is 0 is not included in the car low-speed operation. In addition, except when the car is stopping for turning, the state where the car is stopping and the car speed is greater than 0 is not included in the car low-speed operation. In addition, the landing input information includes the car call information, and the car input information includes the destination floor information.

[0011] According to the present disclosure, when the receiving unit receives the earthquake occurrence signal, the car moves at a speed slower than the maximum moving speed of the car during normal operation. Therefore, the resonance frequency of the long object can be continuously changed by the low-speed movement of the car, and the resonance frequency of the long object can be prevented from being consistent with the frequency of the shaking of the building for a long time. In this way, the vibration amplification of the long object can be suppressed, and the long object can be prevented from being hooked on the hoistway equipment.

[0012] When a long object is hooked on the shaft equipment during an earthquake, the elevator cannot be operated and recovery takes a long time. On the other hand, in the past, when an earthquake occurred, the car was generally stopped at the floor station, and there was no technical idea of ​​moving the car at a low speed during an earthquake. However, as in the elevator disclosed in the present invention, when the car is moved at a low speed during an earthquake, a special and significant effect of preventing the long object from being hooked on the shaft equipment can be obtained while the behavior of the car is stabilized.

[0013] In addition, it may also be provided with: a low-speed operation end determination unit, which is used to determine the end of the low-speed operation of the car; and a low-speed operation end judgment unit, which determines whether to end the low-speed operation of the car based on information from the low-speed operation end determination unit, and when the low-speed operation end judgment unit determines that the low-speed operation of the car is to be ended, the low-speed operation of the car is ended.

[0014] In addition, after the car low speed operation is completed, the car can be stopped at any landing, or at a place other than the landing. Alternatively, when the car low speed operation is completed, the car can be directly transferred from the car low speed operation to the above-mentioned normal operation without stopping the car.

[0015] According to this configuration, when the low-speed operation end determination unit determines that there is no risk of a long object getting caught on the hoistway equipment, the low-speed operation of the car can be ended, and a smooth transition to normal operation can be achieved.

[0016] In addition, it is also possible to have a long-distance direction determining unit, which determines the long-distance direction in which the car can move when the receiving unit receives the earthquake occurrence signal, and the car moves in the long-distance direction at the beginning of the low-speed operation of the car.

[0017] According to this structure, when an earthquake occurs, the car 11 can be operated at a low speed for a long time in a state where the behavior of the car 11 is stable. Therefore, even if the earthquake continues for a long time, it is easy to suppress the hooking of long objects.

[0018] The car low speed operation may be terminated after being performed for a predetermined time, and the car may not perform a turnaround operation during the car low speed operation.

[0019] In addition, the speed of the car during low-speed operation is calculated based on the movable distance of the car in the long-distance direction, the moving distance of the car during acceleration, the stopping distance of the car required to stop, and the above-mentioned specified time. As a result, the car can be operated without turning back during low-speed operation.

[0020] According to this structure, the car does not perform a return operation during the low-speed operation of the car. Thus, the behavior of the car during the low-speed operation of the car can be stabilized, and the long object can be more reliably prevented from being hooked on the hoistway equipment.

[0021] Furthermore, the low-speed operation end determination unit may include an earthquake sensor, and the low-speed operation end determination unit may determine whether to end the low-speed operation of the car based on a physical quantity detected by the earthquake sensor.

[0022] According to this structure, it is possible to more effectively prevent the long object from being caught on the hoistway equipment.

[0023] In addition, the low-speed operation end determination unit may include a photographing device capable of photographing long objects, and the low-speed operation end judgment unit may include an image analysis unit that performs image analysis on the image photographed by the photographing device, and the low-speed operation end judgment unit may determine whether to end the low-speed operation of the car based on image information from the photographing device.

[0024] According to this structure, it is possible to more effectively prevent the long object from being caught on the hoistway equipment.

[0025] In addition, there may also be a human detection unit that can detect whether there is a person in the car. When the human detection unit detects a person, the car will not be operated at a low speed, and after the car stops at any floor station, the car door and the floor station door will open.

[0026] According to this configuration, when an earthquake occurs and there are people in the car, the people in the car can be quickly evacuated from the car.

[0027] Effects of the Invention

[0028] According to the elevator of the present disclosure, when an earthquake occurs, it is possible to prevent long objects from being caught on hoistway equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a broad block diagram illustrating a method for an elevator to determine the occurrence of an earthquake according to one embodiment of the present disclosure.

[0030] Figure 2 It is a schematic structural diagram of the above-mentioned elevator.

[0031] Figure 3This is a flowchart for explaining an example of the movement control of the car by the control device when an earthquake occurs.

[0032] Figure 4 The elevator of the modified example is Figure 3 The corresponding flow chart. DETAILED DESCRIPTION

[0033] Hereinafter, the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in the following, in the case of including multiple embodiments, variations, etc., it is conceived from the beginning to appropriately combine their characteristic parts to construct a new embodiment. In addition, in the following embodiments, the same structure is marked with the same reference numerals in the accompanying drawings, and repeated descriptions are omitted. In addition, the structural elements not recorded in the independent claims representing the highest concept in the structural elements described below are arbitrary structural elements and are not necessary structural elements. In addition, in the elevators 10, 110, and 210 of the present disclosure, it is assumed that the state in which the speed of the car 11 is 0 is not included in the low-speed operation of the car, except for the case in which the speed of the car 11 becomes 0 at the reversing position. In addition, in the elevator 10 of the present disclosure, it is assumed that the state in which the car 11 is performing a stopping action and the speed of the car 11 is greater than 0 is not included in the low-speed operation of the car, except for the case in which the car 11 is performing a stopping action for reversing.

[0034] Figure 1 1 is a broad area block diagram illustrating a method for determining the occurrence of an earthquake by an elevator 10 according to an embodiment of the present disclosure. Figure 1 As shown, the elevator 10 receives the emergency earthquake early warning issued by the Meteorological Agency via at least one of the paths A and B using, for example, a wide area network (WAN) or a local area network (LAN). In the path A, the information processing system 3 of the information processing center 2 such as a maintenance company that performs maintenance on the elevator 10 receives the emergency earthquake early warning issued by the Meteorological Agency 1, and directly or indirectly transmits an earthquake occurrence signal (information) indicating the occurrence of an earthquake to the transceiver 42 of the elevator 10. The transceiver 42 is an example of a receiving unit. For example, there are a plurality of information processing centers 2 throughout Japan.

[0035] Multiple information processing systems 3 installed in multiple information processing centers 2 manage / use data of equipment including hundreds of thousands (e.g., 200,000) elevators and hundreds of thousands (e.g., 300,000) air conditioners throughout Japan, and perform repair / failure response and remote monitoring of equipment. Earthquake occurrence signals (information) indicating the occurrence of an earthquake are transmitted to multiple elevators 10 from, for example, one or more information processing systems 3 in one or more information processing centers 2 related to the earthquake.

[0036] The information processing system 3 may also simultaneously send earthquake occurrence signals to the multiple elevators 10 it manages. Each information processing system 3 may also include one or more processing system servers 4 and one or more database (DB) system servers 5 storing data of the multiple devices. In addition, in the path of A, the information processing system 3 may also directly send earthquake occurrence signals to the elevators 10. Alternatively, in the case where the information processing center 2 is the parent organization of more than one branch company, the information processing system 3 may also indirectly send earthquake occurrence signals to the elevators 10 via the information processing device installed in the branch company.

[0037] Alternatively, the elevator 10 may also receive an earthquake occurrence signal using the path B. In the path B, an information processing device 7 installed in a facility 6 where the elevator 10 is installed, such as a building, an amusement park, a museum, etc., receives an emergency earthquake early warning issued by the Meteorological Agency 1 and transmits an earthquake occurrence signal to the transceiver 42 of the elevator 10.

[0038] The elevator 10 includes a car 11, a car lifting mechanism 25, a transceiver 42, a timer 43 as an example of a low-speed operation end determination unit, an encoder 45, a scale device 46 as an example of a human detection unit, and a control device 19 composed of a control panel and the like. The car lifting mechanism 25 includes a traction machine and the like, and raises and lowers the car 11. The car lifting mechanism 25 will be described later. Figure 2 The detailed description is as follows. The transceiver 42 is an interface for transmitting and receiving data with an external device via a network (not shown) connected to the elevator 10, and is composed of, for example, an interface corresponding to Ethernet. When the transceiver 42 receives an earthquake occurrence signal from the information processing system 3 (or the information processing device 7), it may send a receiving signal indicating that the signal has been received to the information processing system 3 (or the information processing device 7). Alternatively, the elevator of the present disclosure may have a receiving unit instead of a transceiver, and may not be able to send a signal.

[0039] The timer 43 is a control device that outputs an output signal within a predetermined time after receiving an input signal. In this embodiment, after receiving an input signal from the control device 19, the output signal is output to the control device 19 after a predetermined time. The encoder 45 is an absolute encoder that detects the motor 12a of the traction machine 12 (see Figure 2 ) The rotation distance and rotation direction from the origin detect the existence position of the car 11 and the moving direction of the car 11. The encoder 45 may be composed of any one of a mechanical (contact type), an optical type, a magnetic type, and an electromagnetic induction type.

[0040] The scale device 46 detects whether a person is present in the car 11. The scale device 46 may be constituted by any known device. The car 11 includes, for example, a lower frame body of a car frame suspended from a cable 14, and a bottom portion of the car 11 disposed on the lower frame body via an elastic body such as a vibration-proof rubber. The scale device 46 detects whether a person is present in the car 11, for example, by detecting a change in the interval between the lower frame body and the bottom portion.

[0041] The control device 19 is appropriately configured by a computer, such as a microcomputer, and includes a control unit 40 and a storage unit 41. The control unit 40, that is, a processor, includes, for example, a CPU (Central Processing Unit). In addition, the storage unit 41 is composed of a hard disk drive (HDD), a solid state drive (SSD), etc., and may also include a non-volatile memory such as a ROM (Read Only Memory), a volatile memory such as a RAM (Random Access Memory). In addition, the storage unit 41 may be composed of only one storage medium, or may be composed of a plurality of different storage media. The CPU reads out and executes a program pre-stored in the storage unit 41, etc. In addition, the non-volatile memory pre-stores a control program, a specified threshold value, etc. In addition, the volatile memory temporarily stores the read program and processing data. The control unit 40 includes an earthquake determination unit 40a, a human presence determination unit 40b, a car stop determination unit 40c, a car control operation control unit 40d, a long distance direction determination unit 40e, a car speed calculation unit 40f, a low speed operation control unit 40g, a low speed operation end determination unit 40h and a normal operation control unit 40i. The operation of the control unit 40 will be described later. Figure 3 Provide detailed explanation.

[0042] Figure 2 1 is a schematic structural diagram of the elevator 10. Figure 2In the figure, the X direction is the depth direction of the car 11, the Y direction is the width direction of the car 11, and the Z direction is the height direction of the car 11. The X direction, the Y direction, and the Z direction are orthogonal to each other. The elevator 10 has a car 11, a traction machine 12, a counterweight 13, a rope 14, a car call button 15 as a landing operation unit, a destination floor designation button 16 as a destination floor designation operation unit, a floor stop position detection sensor 18, and a control device 19. The control device 19 and the traction machine 12 are arranged in a machine room 30 located above the shaft 20. In addition, in the case where the elevator does not have a machine room, the control device (control panel) and the traction machine are, for example, arranged on a pit located below the shaft. The cable 14 is wound around the traction machine 12, one end of which is fixed to the upper part of the car 11, and the other end of which is fixed to the counterweight 13 via a deflector wheel (not shown). The car call button 15 is a button for calling the car 11 and designating the moving direction of the car 11, and is provided at the landings 22 of all floors. In addition, the destination floor designation button 16 is provided in the car 11 to designate the destination floor of the car 11.

[0043] The car 11 and the counterweight 13 are guided by rails provided in the hoistway 20, respectively. The control device 19 receiving the signals from the car call button 15, the destination floor designation button 16 and the encoder 45 appropriately controls the speed and rotation direction of the motor 12a of the traction machine 12, thereby the car 11 is raised and lowered in the hoistway 20. The landing position detection sensor 18 detects the landing position of the floor station 22 where the car 11 stops. The landing position detection sensor 18 is composed of, for example, a door knife 18a such as an iron plate provided at a hoistway position corresponding to the landing position of each floor and a magnetic detector 18b for detecting the door knife 18a. The detector 18b detects the door knife 18a, thereby the landing position detection sensor 18 detects the landing floor of the car 11. The control device 19 receives a signal indicating that the car 11 has stopped at the landing 22 from the landing position detection sensor 18, and controls the car door motor (not shown), thereby opening the car door 32 and the landing door 31, and people can get on and off the car 11. The rope 14, the traction machine 12, the motor 12a, the deflector pulley and the counterweight 13 constitute the car lifting mechanism 25.

[0044] Figure 3 1 is a flowchart for explaining an example of movement control of the car 11 by the control device 19 when an earthquake occurs. When normal operation in which the raising and lowering control of the car 11 is performed based on input information to the car call button 15 and the destination floor designation button 16 is started by the initial drive of a new elevator 10 or the transition from the maintenance mode to the normal operation mode, movement control starts. In step S1, the earthquake determination unit 40a (see Figure 1) determines whether an earthquake occurrence signal is received via the transceiver 42. If a negative determination is made in step S1, step S1 is repeated. On the other hand, if a positive determination is made in step S1, the process proceeds to step S2, and the human presence determination unit 40b (refer to Figure 1 ) Determine whether there is a person in the car 11 based on the information from the scale device 46.

[0045] When a positive determination is made in step S2, the process proceeds to step S3, and the car control operation control unit 40d stops the car 11 at any landing 22, for example, stops the car 11 at the nearest landing 22 in the moving direction of the car 11. Then, in step S4, the control device 19 controls the motor for opening and closing the car door 32, thereby opening the car door 32 and the landing door 31, and the person in the car 11 can escape from the car 11 to the outside.

[0046] In addition, when the car 11 has already stopped at any landing 22 at the time of determination in step S2, the process directly proceeds to step S4, and the car door 32 and the landing door 31 are opened. When step S4 is completed, in step S5, a recovery action is performed, and when it is confirmed that each device of the elevator 10 is normal due to the recovery action, the process proceeds to step S6, and the normal operation control unit 40i performs the normal operation of the elevator 10. Then, the control returns, and the steps after step S1 are repeated.

[0047] On the other hand, if a negative determination is made in step S2, the process proceeds to step S7, where the car stop determination unit 40c determines whether the car 11 has stopped. If a positive determination is made in step S7, in step S8, the long-distance direction determination unit 40e determines the direction in which the car 11 is operated at a low speed, and in step S9, the car speed calculation unit 40f calculates the maximum speed of the car at a low speed, etc. By performing steps S8 and S9, the car 11 does not perform a return operation when the car is operated at a low speed.

[0048] In step S8, the car speed calculation unit 40f determines the direction in which the car 11 can move longer in the height direction to the turning point based on the position information of the car 11 from the encoder 45, the position information of the turning point on the upper side of the car 11 (for example, the stopping position of the uppermost floor station) and the position information of the turning point on the lower side of the car 11 (for example, the stopping position of the lowermost floor station). In addition, in step S9, for example, the maximum speed of the car is determined as follows.

[0049] In detail, let the acceleration of the car 11 during acceleration until it reaches the maximum speed be a1, let the acceleration of the car 11 during deceleration when it stops be a2, let the distance in the above-mentioned long-distance direction (the distance in the height direction between the car position and the car position at the turning point in the long-distance direction) be L, let the time (prescribed time) for the car to run at a low speed be T, let the time for the car 11 to accelerate be t1, let the time for the car 11 to move at a constant speed be t2, let the time for the car to decelerate be t3, and let the maximum speed of the car 11 during normal operation be V.

[0050] Here, the prescribed time T is the time at which it can be determined that the earthquake has subsided. The prescribed time T can be set, for example, as follows: when a shaking motion, i.e., a seismic motion with a period of 2 to 20 seconds is set as a long-period seismic motion, the occurrence time of the long-period seismic motion with the longest occurrence time from occurrence to end among a plurality of (e.g., 10) different long-period seismic motions in Japan picked up in order from short to long from the time of occurrence to the present.

[0051] In step S9, for example, by determining a1, a2, t1, t2, and t3 that simultaneously satisfy the following equations (1) to (4), the moving speed of the car 11 is determined, and when the car is running at a low speed, the car 11 is not turned back. When step S9 is completed, the process moves to step S10.

[0052] (1 / 2)·(a1·t1 2 +a2·t3 2 )+a1·t1·t2=L……(1)

[0053] t1+t2+t3=T……(2)

[0054] a1·t1=a2·t3……(3)

[0055] a1·t1 <V……(4)

[0056] On the other hand, when a negative determination is made in step S7, the process immediately transfers to step S10. In step S10, when the low-speed operation control unit 40g starts the car low-speed operation, the timing of the timer 43 starts at the same time. In the car low-speed operation, the car 11 moves at a speed slower than the maximum moving speed V of the car 11 during normal operation. The control program of the elevator 10 during the car low-speed operation and the control program of the elevator 10 during normal operation are pre-stored in the storage unit 41. In addition, when step S10 is performed via step S9, the car 11 is not allowed to perform a return operation during the car low-speed operation.

[0057] In step S11 after step S10, the low-speed operation end determination unit 40h determines whether the time of the car low-speed operation is longer than the prescribed time T. As described above, the prescribed time T is a time that can determine whether the earthquake has subsided. When a negative determination is made in step S11, the process moves to step S12, the car low-speed operation is continued, and then the process moves to step S11. On the other hand, when an affirmative determination is made in step S11, the process moves to step S13, the car low-speed operation is transferred to normal operation, and then the control returns to repeat the steps after step S1. For example, when the elevator 10 is in maintenance mode for maintenance, the control ends.

[0058] As described above, the elevator 10 includes: the car 11; the car lifting mechanism 25 that raises and lowers the car 11; and the transceiver 42 that receives an earthquake occurrence signal indicating the occurrence of an earthquake. In addition, when the transceiver 42 receives the earthquake occurrence signal, the car low speed operation is performed, in which the car 11 moves at a speed slower than the maximum moving speed of the car 11 during normal operation, in which the car 11 is raised and lowered based on the floor input information input to the car call buttons 15 respectively provided at the plurality of floor stations 22 and the car input information input to the destination floor designation buttons 16 provided in the car 11.

[0059] According to the present disclosure, when the transceiver 42 receives an earthquake occurrence signal, the car 11 moves at a speed slower than the maximum moving speed of the car during normal operation. Therefore, the resonance frequency of the long object (such as the cable 14, the control cable) can be continuously changed by the low-speed movement of the car 11, and the resonance frequency of the long object can be prevented from being consistent with the frequency of the shaking of the building for a long time. As a result, the vibration amplification of the long object can be suppressed, and the long object can be prevented from being hooked on the hoistway equipment (such as the counterweight 13, the door knife 18a, the guide rail, and the components fixed to the guide rail (such as the bracket supporting the guide rail, etc.)).

[0060] When a long object is hooked on the hoistway equipment during an earthquake, the elevator cannot be operated and recovery takes a long time. On the other hand, in the past, when an earthquake occurred, the car was generally stopped at the landing station, and there was no technical idea of ​​moving the car at a low speed during an earthquake. However, as in the elevator 10, when the car 11 is moved at a low speed during an earthquake, a special and significant effect of being able to suppress the long object from being hooked on the hoistway equipment while the behavior of the car 11 is stabilized can be obtained.

[0061] In addition, it is also possible to have: a timer 43, which is used to determine the end of the low-speed operation of the car; and a low-speed operation end determination unit 40h, which determines whether to end the low-speed operation of the car based on the information from the timer 43. When the low-speed operation end determination unit 40h determines that the low-speed operation of the car is to be ended, the low-speed operation of the car is ended. In addition, after the low-speed operation of the car is ended, the car 11 can be stopped at any landing 22, or it can be stopped at a place other than the landing 22. Alternatively, when the low-speed operation of the car is ended, it is also possible to directly transfer from the low-speed operation of the car to the above-mentioned normal operation without stopping the car 11.

[0062] According to this configuration, when the low-speed operation end determination unit 40h determines that there is no risk of a long object getting caught on the hoistway equipment, the low-speed operation of the car can be ended, and a smooth transition to normal operation can be achieved.

[0063] Furthermore, when the transceiver 42 receives an earthquake occurrence signal, a long-distance direction in which the distance the car 11 can move is long may be determined, and the car 11 may be moved in the long-distance direction at the beginning of the car low-speed operation.

[0064] According to this structure, in the event of an earthquake, the car 11 can be operated at a low speed for a long time while the behavior of the car 11 is stable. Therefore, even if the earthquake lasts for a long time, it is easy to prevent the long object from being caught. In addition, in the case where the car 11 moves in a long-distance direction at the beginning of the car low-speed operation, the car can also be turned back during the car low-speed operation.

[0065] In addition, the low-speed operation of the car may be terminated after a predetermined time, and the car 11 may not perform a return operation during the low-speed operation of the car. In addition, as described above, the speed of the car 11 during the low-speed operation of the car is calculated based on the movable distance of the car in the long-distance direction, the moving distance of the car 11 during acceleration, the required car stopping distance during deceleration of the car 11, and the predetermined time, thereby preventing the car 11 from performing a return operation during the low-speed operation of the car.

[0066] According to this configuration, during the low-speed operation of the car, the car 11 does not perform a turnaround operation. Thus, the behavior of the car 11 during the low-speed operation of the car can be stabilized, and the long object can be more reliably prevented from being caught on the hoistway equipment.

[0067] In addition, there may also be a scale device 46 that can detect whether there is a person in the car 11. When the scale device 46 detects a person, the car will not be operated at a low speed. After the car 11 stops at any floor station 22, the car door 32 and the floor station door 31 are opened.

[0068] According to this configuration, when there are people in the car 11 during an earthquake, the people in the car 11 can be quickly evacuated from the car 11 .

[0069] In addition, the present disclosure is not limited to the above-mentioned embodiments and their variations, and various improvements and changes can be made within the scope of the matters described in the claims of the present application and their equivalents. For example, in the above-mentioned embodiment, the scale device 46 is used to determine whether there is anyone in the car 11. However, the timer 43 can also be used to determine that there is no one in the car 11 when the car 11 has not moved for more than a specified time. Alternatively, the timer 43 and a sensor (such as a camera) that can detect the movement in the car 11 can be used to determine that there is no one in the car 11 when no movement is confirmed in the car 11 for more than a specified time. Alternatively, a camera that takes a picture of the car 11 can be used to determine whether there is anyone in the car 11. In addition, it is also possible to determine that there is no one in the car 11 when the car lighting is turned off in the energy-saving mode, and it is also possible to determine that there is no one in the car 11 when the car lighting is turned off.

[0070] In addition, the case where the car 11 is moved in a long-distance direction and the car 11 is not turned back during the low-speed operation is described. In addition, the case where the low-speed operation end determination unit is a timer 43, and the low-speed operation end determination unit 40h determines that the earthquake has subsided when a specified time has passed since the start of the low-speed operation of the car, and directly transfers from the low-speed operation of the car to the normal operation.

[0071] However, when the low-speed operation end determination unit determines that the earthquake has subsided, it is also possible not to directly transfer to normal operation, but to stop the car 11 at the floor station at the end of the car moving direction in the long-distance direction (the uppermost floor station or the lowermost floor station). In addition, as the movable distance of the car in the long-distance direction becomes longer, the maximum speed of the car in the low-speed operation of the car may be continuously or staged faster. Alternatively, as the movable distance of the car in the long-distance direction becomes longer, the prescribed time for the low-speed operation of the car may be continuously or staged extended. Alternatively, as the movable distance of the car in the long-distance direction becomes longer, the maximum speed of the car in the low-speed operation of the car may be continuously or staged faster, and the prescribed time for the low-speed operation of the car may be continuously or staged extended.

[0072] In addition, as the movable distance of the car in the long-distance direction becomes shorter, the maximum speed of the car in the low-speed operation may be continuously or staged slowed down. Alternatively, as the movable distance of the car in the long-distance direction becomes shorter, the prescribed time for the low-speed operation of the car may be continuously or staged shortened. Alternatively, as the movable distance of the car in the long-distance direction becomes shorter, the maximum speed of the car in the low-speed operation may be continuously or staged slowed down, and the prescribed time for the low-speed operation of the car may be continuously or staged shortened. In addition, the control program for the low-speed operation of the car may also exist for each floor of the elevator 10, and when the control device 19 recognizes the occurrence of an earthquake, the control program for the low-speed operation of the car on the floor where the car 11 stops is executed, thereby determining the long-distance direction and performing the low-speed operation of the car without reversing operation.

[0073] In addition, refer to Figure 1 As in the elevator 110 of the modified example, the timer 43 may not be provided, and the low-speed operation end determination unit may be the earthquake sensor 47. The earthquake sensor 47 includes an acceleration sensor, such as an electrostatic capacitance acceleration sensor, and can detect acceleration. Figure 4 The elevator 110 of the modified example is Figure 3 Corresponding flowchart. In addition, Figure 4 In, with Figure 3 The same steps are denoted by the same step numbers, and descriptions of the actions in the steps are omitted.

[0074] In the elevator 110, when the control starts, in step S1', it is determined whether the earthquake sensor 47 detects an earthquake. If a negative determination is made in step S1', step S1' is repeated, and if a positive determination is made in step S1', the process moves to step S2. Figure 2 As shown, the earthquake sensor 47 is installed in the machine room 30, for example, and detects the occurrence of an earthquake by detecting acceleration. In addition, the control device that receives the signal from the earthquake sensor 47 determines that an earthquake has occurred when it determines that the acceleration detected by the earthquake sensor 47 is greater than the first threshold value. Figure 4 In the control shown, step S3' is performed instead of step S3.

[0075] In step S3', when the car 11 stops at any floor, the car 11 is kept stopped. On the other hand, when the car 11 is moving, the car 11 is stopped at a floor where the cable 14 does not resonate. The earthquake sensor 47 can detect the direction of acceleration, and therefore, the period of the earthquake, that is, the period of vibration of the building where the elevator 10 is installed can be estimated. In addition, based on the information from the encoder 45, the positions of the cable 14, the car 11, and the counterweight 13 when the car 11 stops at the floor can be determined for each floor station. Therefore, the period of vibration of the building can be estimated based on the information from the earthquake sensor 47, and the resonance frequency of the cable 14 can be determined based on the information from the encoder 45, and therefore, the floor where the cable 14 does not resonate can be determined.

[0076] Thus, in step S3', when the car 11 is moving, the car 11 is stopped at a floor where the cable 14 does not resonate. In this case, when the control device 19 recognizes the occurrence of an earthquake, the car 11 may be stopped at a floor that is closest to the position of the car 11 and is located ahead of the car 11 in the moving direction and where the cable 14 does not resonate.

[0077] In this way, when the control device detects that there are people in the car 11 when an earthquake occurs, people can be quickly evacuated from the car 11 when the car 11 is stopped at any floor. On the other hand, people can be quickly evacuated from the car 11 when the car 11 is moving, and the cable 14 can be effectively prevented from being hooked on the hoistway equipment.

[0078] In addition, Figure 4 In the control shown, step S10′ is performed instead of step S10, and step S11′ is performed instead of step S11. In step S10′, the car is operated at a low speed. Furthermore, in step S11′, the control device that receives the signal from the earthquake sensor 47 determines that the earthquake has ended when it determines that the acceleration detected by the earthquake sensor 47 is below the second threshold. The above-mentioned first threshold may be the same as or different from the second threshold. When a negative judgment is made in step S11′, the process proceeds to step S12. After continuing the low-speed operation of the car, step S11′ is repeated. When an affirmative judgment is made in step S11′, the process proceeds to step S13.

[0079] As described above, in the elevator 110 of the modified example, the low-speed operation end determination unit may include the earthquake sensor 47, and the low-speed operation end determination unit may determine whether to end the low-speed operation of the car based on the physical quantity detected by the earthquake sensor 47. According to this structure, it is possible to more effectively prevent long objects from being hooked on the shaft equipment. In addition, in the above-mentioned modified example, the earthquake is determined to be over when the acceleration is below the second threshold value, but the amplitude of the vibration of the cable may be calculated based on the physical quantity detected by the earthquake sensor 47, and the earthquake may be determined to be over when the calculated amplitude is below a specified value.

[0080] Or, if Figure 1 As shown, another modified example of the elevator 210 can also replace the timer 43 and the earthquake sensor 47 with a camera 48 capable of photographing the long object in the shaft 20 as the low-speed operation end determination unit. Figure 2 As shown, the photographing device 48 may also include: an upper photographing unit 48a, which is disposed at the upper end of the car 11 and can photograph an area located above the car 11; and a lower photographing unit 48b, which is disposed at the lower end of the car 11 and can photograph an area located below the car 11.

[0081] In addition, the low-speed operation end determination unit may include an image analysis unit that performs image analysis of the image captured by the camera 48, and the low-speed operation end determination unit may determine whether to end the low-speed operation of the car based on the image information from the camera 48. In addition, in this case, the low-speed operation end determination unit may determine that the low-speed operation of the car is ended when the amplitude of the vibration of the cable 14 is below the third threshold and the amplitude of the vibration of the control cable is below the fourth threshold, and in this case, the low-speed operation of the car may also be ended. In this way, it is also possible to effectively prevent the long object from being hooked on the hoistway equipment.

[0082] In addition, the maximum speed of the car 11 in the low-speed operation may be less than 4 / 5 of the maximum speed of the car 11 in normal operation, or less than 3 / 5 of the maximum speed of the car 11 in normal operation. Alternatively, the maximum speed of the car 11 in the low-speed operation may be less than 2 / 5 of the maximum speed of the car 11 in normal operation, or less than 1 / 5 of the maximum speed of the car 11 in normal operation. In addition, the elevator of the present disclosure may also be a hydraulic elevator, and in the hydraulic elevator, it is also possible to prevent long objects such as control cables from being hooked on the hoistway equipment during an earthquake.

[0083] Description of symbols

[0084] 1: Meteorological Agency; 2: Information processing center; 3: Information processing system; 4: Processing system server; 5: Database system server; 7: Information processing device; 10, 110, 210: Elevator; 11: Car; 12: Traction machine; 12a: Motor; 13: Counterweight; 14: Cable; 15: Car call button; 16: Destination floor designation button; 18: Stop position detection sensor; 18a: Door knife; 18b: Detector; 19: Control device; 20: Hoistway; 22: Landing station; 25: Car lifting mechanism; 30: Machine room; 31: Landing station door; 3 2: Car door; 40: Control unit; 40a: Earthquake determination unit; 40b: Human presence determination unit; 40c: Car stop determination unit; 40d: Car control operation control unit; 40e: Long distance direction determination unit; 40f: Car speed calculation unit; 40g: Low speed operation control unit; 40h: Low speed operation end determination unit; 40i: Normal operation control unit; 41: Storage unit; 42: Transceiver unit; 43: Timer; 45: Encoder; 46: Scale device; 47: Earthquake sensor; 48: Photographing device; 48a: Upper side photographing unit; 48b: Lower side photographing unit.

Claims

1. An elevator, comprising: Car; a car lifting mechanism that raises and lowers the car; and a receiving unit that receives an earthquake occurrence signal indicating the occurrence of an earthquake, When the receiving unit receives the earthquake occurrence signal, the car is operated at a low speed. During the low-speed operation of the car, the car moves at a speed slower than the maximum moving speed of the car during normal operation. During the normal operation, the car is raised or lowered based on floor station input information input into floor station operating units respectively arranged at multiple floor stations and car input information input into a destination floor designation operating unit arranged in the car.

2. The elevator according to claim 1, wherein: The elevator has: a low-speed operation end determination unit, configured to determine the end of the low-speed operation of the car; and a low-speed operation end determination unit for determining whether to end the low-speed operation of the car based on information from the low-speed operation end determination unit; When the low-speed operation completion determination unit determines that the car low-speed operation is to be completed, the car low-speed operation is completed.

3. The elevator according to claim 1 or 2, wherein: When the receiving unit receives the earthquake occurrence signal, a long-distance direction in which the distance the car can move is determined, At the beginning of the low-speed operation of the car, the car moves in the long-distance direction.

4. The elevator according to claim 3, wherein: The low-speed operation of the car ends after a specified time. The car does not perform a turnaround operation during the car low speed operation.

5. The elevator according to claim 2, wherein: The low speed operation end determination unit includes an earthquake sensor, The low-speed operation end determination unit determines whether to end the low-speed operation of the car based on a physical quantity detected by the earthquake sensor.

6. The elevator according to claim 2, wherein: The low-speed operation end determination unit includes a photographing device capable of photographing a long object. The low-speed operation end determination unit includes an image analysis unit that performs image analysis on the image captured by the image capturing device. The low-speed operation end determination unit determines whether to end the low-speed operation of the car based on the image information from the imaging device.

7. The elevator according to any one of claims 1 to 6, wherein: The elevator includes a human detector capable of detecting whether a person is in the car. When the human detection unit detects a human, the car low speed operation is not performed, and after the car stops at an arbitrary landing, the car door and the landing door are opened.

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