JP2012188208A - Elevator system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator system which can extend a lifetime of a cooling device for cooling a hoist or can reduce an operating sound of the cooling device.SOLUTION: An elevator system 1 includes: a lift 2; a rope 4; a hoist 5; a temperature detecting means 21; a cooler 25; and a controller 11. The lift 2 moves up and down along a guide rail 12. The rope 4 is connected to the lift 2. The hoist 5 is wound with the rope 4 to move the lift 2 up and down. The temperature detecting means 21 detects a temperature change of the hoist 5. The cooler 25 cools the hoist 5 according to a detection result of the temperature detecting means 21. The controller 11 controls the drive of at least the hoist 5.

Description

  Embodiments described herein relate generally to an elevator system.

  The elevator system rotates a hoisting machine to wind up a rope, and raises and lowers a passenger car and a counterweight connected to the rope in a fishing bottle type in a hoistway. The hoisting machine is cooled by a blower in order to suppress overheating.

JP 2001-322780 A

  By the way, since the elevator system has a drive part also in the air blower which is a cooling device, the design life of the air blower is set. Therefore, it is necessary to stop the operation of the elevator system in order to periodically maintain the fan and replace the fan. Moreover, an operation sound is generated by driving the blower itself.

  This invention is made in view of the above, Comprising: It aims at providing the elevator system which can extend the lifetime of the cooling device which cools a winding machine, or can reduce the operation sound of a cooling device. .

  The elevator system according to the embodiment includes an elevating body, a rope, a hoisting machine, a temperature detecting unit, a cooling device, and a control device. The lifting body moves up and down along the guide rail. The rope is connected to the lifting body. In the hoisting machine, a rope is wound up and down the lifting body. The temperature detecting means detects a temperature change of the hoisting machine. The cooling device cools the hoist according to the detection result of the temperature detection means. The control device performs drive control of at least the hoisting machine.

FIG. 1 is a diagram illustrating a schematic configuration example of an elevator system according to the present embodiment. FIG. 2 is a block diagram illustrating the control system of the elevator system according to the first embodiment. FIG. 3 is a schematic diagram illustrating a schematic configuration example of the hoisting machine and the cooling device according to the first embodiment. FIG. 4 is a diagram illustrating an operation flow of the elevator system according to the first embodiment. FIG. 5 is a block diagram illustrating an elevator system control system according to the second embodiment. FIG. 6 is a diagram illustrating an operation flow of the elevator system according to the third embodiment. FIG. 7 is a block diagram illustrating an elevator system control system according to the third embodiment. FIG. 8 is a diagram illustrating an operation flow of the elevator system according to the fourth embodiment. FIG. 9 is a schematic diagram illustrating another example of the schematic configuration of the hoisting machine and the cooling device according to the fourth embodiment. FIG. 10 is a schematic diagram illustrating a schematic configuration example of the hoisting machine and the cooling device according to the fifth embodiment. FIG. 11 is a diagram illustrating an operation flow of the elevator system according to the sixth embodiment.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In the present embodiment, a rope-type elevator system having a machine room will be described, but the present invention is not limited to this, and the present invention can also be applied to a rope-type elevator system having no machine room.

[Embodiment 1]
FIG. 1 is a diagram illustrating a schematic configuration example of an elevator system according to the present embodiment. In FIG. 1, only one of the pair of weight guide rails is shown. FIG. 2 is a block diagram illustrating the control system of the elevator system according to the first embodiment.

  The elevator system 1 includes a car 2, a guide device 3, a main rope 4, a hoisting machine 5, a deflecting sheave 6, a counterweight 7, a main controller 11, and a pair of car guide rails 12. And a pair of weight guide rails 13, hall display devices 411 to 41 </ b> Z, a cooling device 25, and temperature detection means 21 and 22. In the present embodiment, the car 2, the guide device 3, the counterweight 7, the pair of car guide rails 12, and the pair of weight guide rails 13 are arranged in the hoistway 14. Further, the hoisting machine 5, the deflecting sheave 6, and the main control device 11 are disposed in the machine room 15.

  In the present embodiment, the car 2 is a lifting body, on which passengers get on and off. The car 2 is arranged between the pair of car guide rails 12 and moves up and down in the hoistway 14 by moving up and down in the elevating direction T along the car guide rails 12. An opening / closing door 20, a load detection means 23, and a car control unit 24 are attached to the car 2.

  The guide device 3 is for causing the car 2 to travel along a pair of car guide rails 12. The guide device 3 includes a guide unit 31. Two guide portions 31 are provided at positions facing the pair of car guide rails 12 in the car 2. The guide unit 31 is a guide shoe or a guide roller, and can guide the car 2 in the vertical direction along the pair of car guide rails 12 by mechanically contacting the car guide rails 12. Or the guide part 31 controls the magnetic field which a permanent magnet generate | occur | produces by producing | generating a magnetic force and the permanent magnet which generate | occur | produces attraction | suction force when approaching the guide rail 12 for a certain fixed distance, and uses the passenger car 2 for a pair of car It may have an electromagnet levitating from the guide rail 12.

  The car control unit 24 is electrically connected to a car equipment control unit 111 (to be described later) of the main control device 11, and by exciting the electromagnet with electric power supplied via the main control device 11, The car 2 can be levitated from the pair of car guide rails 12 by controlling the magnetic field generated by the magnet.

  The car control unit 24 is electrically connected to a car equipment control unit 111 (to be described later) of the main control device 11, and opens and closes the opening / closing door 20 by electric power supplied via the main control device 11. can do.

  The load detection means 23 is a load sensor such as a load cell that detects the load of the loading amount of the car 3. The load detection means 23 converts the load of the loading amount of the car 3 into a load signal that is an electric signal. The load detection means 23 is electrically connected to the main control device 11 via the car control unit 24, and can send a load signal of the loading amount of the car 3 to the main control device 11.

  The main rope 4 is a rope that connects the car 2 and the counterweight 7. In this embodiment, the main rope 4 has one end connected to the upper part of the car 2 and the other end connected to the upper end of the counterweight 7, and the hoisting machine 5 and the deflecting sheave 6. It is wrapped around

  The hoisting machine 5 rotates to wind up the main rope 4 and raise and lower the car 2 and the counterweight 7 connected to the main rope 4 in a hoistway 14 like a fishing bottle. The hoisting machine 5 is electrically connected to the main control device 11, and drive control is performed by electric power supplied via the main control device 11.

  The deflecting sheave 6 adjusts the fishing width when the main rope 4 is connected to the car 2 and the counterweight 7. The deflecting sheave 6 is set in the vicinity of the hoisting machine 5 in the machine room 15. The main rope 4 located between the hoisting machine 5 and the counterweight 7 is wound around the deflecting sheave 6 in this embodiment.

  The counterweight 7 moves up and down in the hoistway 14 in conjunction with the raising and lowering of the car 2, and generates an unbalance between the car 2 and the hoisting machine 5. The counterweight 7 is disposed between the pair of weight guide rails 13 and moves up and down along the weight guide rails 13.

  The hall display devices 411 to 41Z are arranged on each floor where the car 2 of the elevator system 1 stops. The hall display devices 411 to 41Z can transmit a warning by a buzzer or the like, automatic audio or video distribution to users on each floor in accordance with a command from the main control device 11.

  The main control device 11 is a control device that controls the drive of at least the hoisting machine 5. In the present embodiment, the main control device 11 includes a car equipment control unit 111, a calculation unit 112, a cooling device control unit 113, and a hoisting machine control unit 114 shown in FIG. The car equipment control unit 111 instructs the elevator operation of the car, the position of the stop floor, the opening / closing of the open / close door 20, etc. via the car control unit 24, and supplies power to the car 2 and the guide device 3. . The calculation unit 112 is connected to the temperature detection unit 21 and can calculate the detection result of the temperature detection unit 21. The cooling device control unit 113 is connected to the cooling device 25 and can control the operation of the cooling device 25 or the cooling amount of the cooling device 25 by supplying electric power to the cooling device 25. The hoisting machine control unit 114 is connected to the hoisting machine 5 and can control the supply of electric power to the hoisting machine 5.

  The temperature detection means 21 and 22 can detect a temperature change. In this embodiment, the temperature detection means 21 and 22 are temperature sensors, such as a thermistor or a thermocouple. For example, a temperature sensor outputs a change in temperature as an electrical signal based on a change in electrical resistance. The temperature detection means 21 is installed at a position where the temperature change of the hoisting machine 5 can be detected as will be described later. Moreover, the temperature detection means 22 is installed outside the elevator system 1, and can detect the change of temperature.

  FIG. 3 is a schematic diagram illustrating a schematic configuration example of the hoisting machine and the cooling device according to the first embodiment. The hoisting machine 5 includes a motor unit main body 50 in a frame 55. Ventilation holes 56 and 57 are opened in the frame 55. The motor unit body 50 includes a stator 51 composed of permanent magnets, a rotor 52 in which a coil is wound around an iron core, a rotating shaft 53 that is a central axis of the rotor 52, and a bearing 54 that is fixed to a frame 55. And. The bearing 54 may be fixed at a place other than the frame 55. When electric power is supplied from the hoisting machine control unit 114, the motor unit main body 50 excites the rotor 52 and generates a rotational force by the magnetic action with the stator 51, and around the center O of the rotating shaft 53. Rotate. Since the cost increases when the diameter of the iron core of the rotor 52 is increased, the volume is preferably reduced. In order to reduce the volume of the rotor 52, it is necessary to improve the heat dissipation characteristics of the motor unit body 50. In order to improve the heat dissipation characteristics, an internal fan 58 is provided directly on the rotor 52 to circulate the air in the frame 55. As a result, the air flow w1 introduced from the ventilation hole 56 circulates as the air flow w3 to the ventilation hole 57, whereby the circulation of the air in the frame 55 proceeds and the heat dissipation characteristics of the motor unit body 50 are improved.

  As shown in FIG. 3, the hoisting machine 5 of the first embodiment is provided with a cooling device 25. In the present embodiment, the cooling device 25 is a blower that rotates a built-in fan and forcibly blows the airflow w1 into the frame 55 as the airflow w2. Thereby, the cooling device 25 can cool the motor part main body 50 of the hoisting machine 5.

  The temperature detecting means 21 is preferably embedded in the stator 51 or attached to the surface of the stator 51. Thereby, it becomes easy to sense the temperature change of the motor unit main body 50 of the hoisting machine 5. Further, the temperature detection means 21 accurately detects the temperature change following the operation state of the motor unit body 50 of the hoisting machine 5, the operation of the cooling device 25, or the temperature change caused by the cooling amount of the cooling device 25. Can do.

  Next, the operation of the elevator system 1 according to this embodiment will be described. FIG. 4 is a diagram illustrating an operation flow of the elevator system according to the embodiment.

  As shown in FIG. 4, the calculation unit 112 of the main control device 11 obtains the detection result from the temperature detection means 21 and detects the temperature of the hoisting machine body (step S <b> 1).

  Next, the cooling device control unit 113 determines the operation of the cooling device (step S2). When the cooling device is operating (step S2, Yes), step S6 described later is performed. When the cooling device is not operating (step S2, No), the calculation unit 112 compares the detection result from the temperature detection means 21 with a predetermined threshold temperature, and whether the temperature exceeds the threshold temperature at which the cooling device should operate. A determination is made (step S3). The threshold value at which the cooling device should operate is 100 ° C., for example. When the temperature of the threshold value at which the cooling device should operate has not been exceeded (No at Step S3), the calculation unit 112 detects the temperature of the hoisting machine body (Step S1). Thereby, the temperature rise of the hoisting machine 5 can be constantly monitored.

  Next, when it exceeds the threshold temperature at which the cooling device should operate (step S3, Yes), the calculation unit 112 determines an abnormality of the hoist (step S4). For example, it is a case where the temperature exceeds a temperature that can be normally assumed and exceeds the above-described threshold temperature.

  The elevator system 1 has temperature detection means 22 that detects a temperature change outside the elevator system 1. Thereby, the calculating part 112 of the main controller 11 can calculate the difference between the temperature change outside the elevator system 1 and the temperature change detected by the temperature detecting means 21. The main control device 11 stores the temperature of the above-described threshold value taking into account the difference between this air temperature and the detection result of the temperature detection means 21, and using this threshold value as a reference, the abnormality of the hoisting machine 5 can be more accurately detected. Can be judged.

  When the arithmetic unit 112 determines that the hoisting machine is abnormal (step S4, Yes), the hoisting machine control unit 114 stops the power supply of the hoisting machine 5 and stops the hoisting machine 5 (step S8). When the threshold temperature at which the cooling device should operate has not been exceeded (step S3, No), the cooling device control unit 113 supplies power to the cooling device 25, and the cooling device 25 operates (step S5).

  Next, the calculation unit 112 obtains the detection result from the temperature detection means 21, compares the temperature of the detection result with the threshold value at which the cooling device should operate, and is the temperature lower than the temperature at which the cooling device should operate? Judgment is made (step S6). When the temperature is not lower than the temperature at which the cooling device should operate (No in step S6), the cooling device control unit 113 continues to supply power so that the cooling device operates (step S5). When it becomes below the temperature which a cooling device should operate (Step S6, Yes), cooling device control part 113 stops power supply to cooling device 25, and cooling device 25 stops (Step S7). As a result, the cooling device 25 stops when the hoisting machine 5 becomes equal to or lower than the predetermined threshold temperature, and is driven when the hoisting machine 5 becomes equal to or higher than the predetermined threshold temperature. For this reason, the drive time of the cooling device 25 is reduced. As a result, the lifetime of the cooling device 25 is extended. The calculation unit 112 detects the temperature of the hoisting machine main body (step S1). Thereby, the temperature rise of the hoisting machine 5 can be constantly monitored.

  The elevator system 1 described above includes a car 2 that is an elevator that moves up and down along a guide rail, a main rope 4 that is connected to the car 2, and a winding that winds the car 2 up and down. The upper machine 5, the temperature detection means 21 for detecting the temperature change of the hoisting machine 5, the cooling device 25 for cooling the hoisting machine 5 according to the detection result of the temperature detecting means 21, and the driving of the hoisting machine 5 at least And a control device 11 that performs control.

  Thereby, the frequency with which the cooling device 25 operates is reduced. For this reason, the operation sound of the cooling device 25 is reduced. Moreover, the lifetime of the cooling device 25 is extended. Moreover, the maintenance frequency of the elevator system 1 is reduced. As a result, the elevator system 1 of the present embodiment can reduce the frequency of stopping the operation of the elevator system 1 and can continuously provide an elevator service. Moreover, since the elevator system 1 has the cooling device 25, the efficiency of cooling the hoisting machine 5 can be increased. For this reason, the heat dissipation characteristic of the hoisting machine 5 is improved, and the hoisting machine 5 becomes smaller.

  Moreover, the temperature detection means 21 is a temperature sensor, and the control device 11 controls the operation of the cooling device 25 according to the temperature detected by the temperature sensor. The motor main body 50 that is cooled before the hoisting machine 5 is driven increases in temperature after the start of driving, and has a certain convergence temperature. Here, when the hoisting machine 5 is driven frequently, for example, when going to work or lunch, the temperature of the motor unit body 50 is high. For this reason, the temperature of the motor part main body 50 tends to exceed the threshold value mentioned above. For this reason, in this embodiment, when the drive frequency of the hoisting machine 5 is high, the cooling device 25 cools the hoisting machine 5. At night when the hoisting machine 5 is driven less frequently, the temperature of the motor unit body 50 often does not exceed the above-described threshold value, and the car 2 moves up and down without the cooling device cooling the hoisting machine 5. For this reason, the operation sound of the cooling device 25 is reduced, and noise at night can be suppressed.

[Embodiment 2]
FIG. 5 is a block diagram illustrating an elevator system control system according to the second embodiment. The elevator system 1 according to the second embodiment is different from the first embodiment in that the temperature detecting means 21 is a thermostat. In addition, about the structure, an effect | action, and effect which are common in embodiment mentioned above, the overlapping description is abbreviate | omitted as much as possible (it is the same also in embodiment and the modification demonstrated below).

  The thermostat of the temperature detecting means 21 is disposed at a position where the temperature change of the hoisting machine 5 can be detected. When the thermostat reaches a predetermined temperature, it can send either an on signal or an off signal as a detection result. For example, an ON signal is sent as a detection result when the thermostat reaches a predetermined temperature, and an OFF signal is sent as a measurement result when the thermostat reaches a predetermined temperature.

  As shown in FIG. 5, the main control device 11 </ b> A of the second embodiment includes a car equipment control unit 111, a cooling device control unit 113, and a hoisting machine control unit 114. The cooling device 25 operates in response to an ON signal of a thermostat that is the temperature detecting means 21. Alternatively, the cooling device 25 stops in response to a thermostat OFF signal that is the temperature detection means 21. Thereby, compared with the main arithmetic unit 11 shown in FIG. 2 of Embodiment 1, the calculating part 112 which judges the temperature of a temperature sensor can be abbreviate | omitted. Thereby, the main controller 11A is simplified and the number of circuits can be reduced. As a result, the reliability of the entire elevator system 1 is improved.

[Embodiment 3]
FIG. 6 is a diagram illustrating an operation flow of the elevator system according to the third embodiment. FIG. 7 is a block diagram illustrating an elevator system control system according to the third embodiment. The elevator system 1 according to the third embodiment detects the temperature of the hoisting machine main body similarly to the first embodiment, and restricts the elevator service when the temperature reaches a predetermined temperature.

  As shown in FIG. 6, the elevator system 1 of the present embodiment operates the cooling device 25 (step S11). For example, the main control device 11B of this embodiment shown in FIG. 7 includes a car equipment control unit 111, a calculation unit 112, a cooling device control unit 113, and a hoisting machine control unit 114. Here, the cooling device control unit 113 supplies power to the cooling device 25 and operates the cooling device 25.

  Next, the calculation unit 112 of the main control device 11 obtains the detection result from the temperature detection means 21 and detects the temperature of the hoisting machine main body (step S12). Next, the calculation unit 112 determines whether the temperature of the detection result has reached a predetermined temperature stored in advance (step S13). If the calculation unit 112 determines that the temperature of the detection result has not reached the predetermined temperature stored in advance (No at Step S13), the temperature detection of the hoisting machine main body is continued (Step S12). When the calculation unit 112 determines that the temperature of the detection result has reached a predetermined temperature stored in advance (Yes in step S13), the car device control unit 111 performs restriction on the elevator service ( Step S14).

  Here, as an example of the restriction of the elevator service, the car equipment control unit 111 performs control so as to lengthen the operation interval of the car 2 that is the lifting body during the operation of the cooling device 25. More specifically, the car equipment control unit 111 controls the car control unit 24 to perform control to increase the interval in which the car 2 moves in the up-and-down direction T with respect to the car guide rail 12. be able to.

  In addition, the car device control unit 111 can also control the car control unit 24 to delay the time for the car 2 to float from the pair of car guide rails 12 (car departure time). Alternatively, the car device control unit 111 can perform control for extending the closing time of the open / close door 20 via the car control unit 24.

  In addition, when a plurality of elevator systems 1 are installed in a facility where the elevator system 1 of the present embodiment is installed, the optimal car 2 is assigned to the call registration of the user in the hall. When the hoisting machine 5 that moves up and down the car 2 has reached a predetermined temperature, the car 2 that operates on another hoisting machine 5 that has not reached the predetermined temperature is assigned. Accordingly, the operation interval of the car 2 in which the temperature of the hoisting machine 5 has reached the predetermined temperature can be increased, and the service of the car 2 in which the hoisting machine 5 has not reached the predetermined temperature is continued. Thus, it is possible to supplement the transportation of the hoisting machine 5 that restricts the service of the car 2 that has reached the predetermined temperature.

  Due to the restriction of the elevator service described above, if the operation interval of the elevator car 2 that is the lifting body is lengthened during the operation of the cooling device 25, the hoisting machine 5 is cooled and the temperature is lowered. For this reason, even if it suppresses the cooling amount which the cooling device 25 cools, the winding machine 5 can be cooled. For this reason, the lifetime of the cooling device 25 is extended. Further, if the cooling device 25 is a blower, the number of rotations of the fan can be suppressed, so that operation noise can be reduced.

  Next, the car equipment control unit 111 provides information to the user that the elevator service is restricted to the hall display devices 411 to 41Z for each floor by automatic voice or video distribution (step S15). ). Thereby, the user can grasp | ascertain the operation state of the elevator system 1. FIG.

  As another example of the restriction of the elevator service, the vehicle equipment control unit 111 of the main controller 11B includes a load detection unit 23 that detects a load amount (number of passengers) loaded on the car 2 that is a lifting body. During the operation of the cooling device 25, the reference of the overload amount is lowered, and when the load amount (number of passengers) is determined to be equal to or greater than the reference of the overload amount, the car 2 is kept stopped. The car equipment control unit 111 is loaded on the car 2 in one of the hall display devices 411 to 41Z on the floor where the car 2 is stopped by a warning sound such as a buzzer, automatic audio or video distribution. The information is provided to the user so as to reduce the load capacity (number of passengers) (step S15).

  For example, when the capacity of the car 2 is 50%, the balance between the counterweight 7 and the load (number of passengers) mounted on the car 2 is improved, and the load on the hoist 5 is reduced. . For example, when restricting the elevator service (step S14), the standard for overloading is reduced from 100% of the capacity of the car 2 to 50% of the capacity, and the car equipment control unit 111 When it is determined that there are 50% or more passengers, the car 2 is kept stopped. Thereby, the elevator system 1 is operated in a state where the amount of heat generated by the hoisting machine 5 is reduced. If this operation continues, the hoisting machine 5 will be cooled and the temperature will drop. For this reason, even if it suppresses the cooling amount which the cooling device 25 cools, the winding machine 5 can be cooled. For this reason, the lifetime of the cooling device 25 is extended. Further, if the cooling device 25 is a blower, the number of rotations of the fan can be suppressed, so that operation noise can be reduced.

[Embodiment 4]
FIG. 8 is a diagram illustrating an operation flow of the elevator system according to the fourth embodiment. The elevator system 1 according to the fourth embodiment detects the temperature of the hoisting machine main body similarly to the first embodiment, and controls the cooling amount of the cooling device when the temperature reaches a predetermined temperature.

  As shown in FIG. 8, the elevator system 1 of the present embodiment operates the cooling device (step S21). For example, referring to FIG. 2 and FIG. 3, the main control device 11 of the present embodiment includes a car equipment control unit 111, a calculation unit 112, a cooling device control unit 113, a hoisting machine control unit 114, Is included. Here, the cooling device control unit 113 supplies power to the cooling device 25 and operates the cooling device 25.

  Next, the calculation unit 112 of the main control device 11 obtains the detection result from the temperature detection unit 21 and detects the temperature of the motor unit main body 50 (step S22). Next, the calculation unit 112 determines whether the temperature of the detection result has reached a predetermined temperature stored in advance (step S23). If the calculation unit 112 determines that the temperature of the detection result has not reached the predetermined temperature stored in advance (No at Step S23), the temperature detection of the motor unit main body 50 is continued (Step S22). When the calculation unit 112 determines that the temperature of the detection result has reached the predetermined temperature stored in advance (Yes in step S23), the cooling device control unit 113 controls the cooling amount of the cooling device 25. It performs (step S24).

  For example, the cooling device 25 shown in FIG. 3 is a blower, and in order to increase the cooling amount, the air amount of the blower is increased. That is, according to the temperature of the detection result of the temperature detection means 21, when the temperature of the detection result is higher than a predetermined temperature, the air volume of the blower is increased. When the temperature of the detection result is lower than the predetermined temperature, the air volume of the blower is decreased. For this reason, the lifetime of the cooling device 25 becomes longer than when the cooling device 25 operates with the same cooling amount. In addition, if the cooling device 25 is a blower, it is possible to reduce the operating noise because the number of rotations of the fan with the required cooling amount can be suppressed.

  It is more preferable that the calculation unit 112 sets the predetermined temperature stepwise and stores it in advance, and changes the cooling amount of the cooling device 25 stepwise according to the predetermined temperature set stepwise. Thereby, for example, the average temperature of the coil of the rotor 52 can be reduced, and the life of the hoisting machine 5 can be extended.

  As described above, the temperature detection means 21 of the elevator system 1 is a temperature sensor, and the main controller 11 controls the cooling amount of the cooling device 25 according to the temperature detected by the temperature sensor. Thereby, since operation | movement of a cooling device can be restrained to the required cooling amount, a lifetime can be extended. Further, since the operation of the cooling device is suppressed, the operation noise can be reduced. In addition, since the cooling device 25 controls the cooling amount of the cooling device 25 according to the temperature detected by the temperature sensor, it is not necessary to install the cooling device 25 that can be excessively cooled when the elevator system 1 is designed. It is suppressed that it becomes a strict specification.

  FIG. 9 is a schematic diagram illustrating another example of the schematic configuration of the hoisting machine and the cooling device according to the fourth embodiment. A plurality of cooling devices 25A, 25B, and 25C are attached to the hoisting machine 5 of FIG. As described above, when the calculation unit 112 determines that the temperature of the detection result has reached the predetermined temperature stored in advance (Yes in step S <b> 23), the cooling device control unit 113 sets the temperature of the cooling device 25. The amount of cooling is controlled (step S24).

  For example, in order for the cooling devices 25A, 25B, and 25C shown in FIG. 9 to increase the cooling amount, the number of operating cooling devices that operate among the cooling devices 25A, 25B, and 25C is increased. That is, according to the temperature of the detection result of the temperature detection means 21, when the temperature of the detection result is higher than a predetermined temperature, the number of operations of the cooling device is increased. When the temperature of the detection result is lower than the predetermined temperature, the number of operations of the cooling device is decreased. For this reason, the lifetime of each cooling device 25A, 25B, 25C becomes long compared with the case where cooling device 25A, 25B, 25C always operate | moves. In addition, if the cooling devices 25A, 25B, and 25C are blowers, the number of operations of the blower with the required cooling amount can be suppressed, so that the operation noise can be reduced.

  As described above, the elevator system 1 of the present embodiment includes a plurality of cooling devices 25A, 25B, and 25C, and the main control device 11 determines whether the cooling devices 25A, 25B, and 25C are in accordance with the temperature detected by the temperature detection unit 21. Of these, the cooling amount is controlled by increasing or decreasing the number of operations of the cooling device. By using a plurality of cooling devices 25A, 25B, and 25C, the amount of cooling per cooling device 25A, 25B, and 25C can be reduced, and the entire cooling device can be reduced in size.

  Here, in the frame 55 of the hoist 5, there may be a heat distribution called a hot spot H having a high local heat. Since a plurality of cooling devices can be selectively operated like the cooling devices 25A, 25B, and 25C, for example, the cooling device 25A that can efficiently blow the air flow w2A to the hot spot H is operated preferentially, and the cooling device The stop frequency of the airflow w2B of 25B and the airflow w2C of the cooling device 25C can be increased. Moreover, the lifetime of cooling device 25A, 25B, 25C can be extended by replacing | exchanging cooling device 25A with a high operation rate with cooling device 25B or 25C regularly.

[Embodiment 5]
FIG. 10 is a schematic diagram illustrating a schematic configuration example of the hoisting machine and the cooling device according to the fifth embodiment. In the elevator system 1 of the fifth embodiment, the cooling device is the liquid refrigerant circulation device 26. The liquid refrigerant circulation device includes a pump 27, a cooling unit 28, and a heat receiving unit 29. The pump 27 is a driving body that discharges a liquid refrigerant such as water or oil and sends the liquid refrigerant to the heat receiving unit 29. The cooling unit 28 includes, for example, a fan, takes in the airflow w1, takes heat from the liquid refrigerant that has absorbed heat from the heat receiving unit 29 and increases its temperature by heat exchange, and discharges it as an airflow w4 to the outside of the elevator system 1. The heat receiving unit 29 causes the liquid refrigerant w1 discharged from the pump 27 to receive the heat of the motor unit main body 50, and returns the liquid refrigerant w2 to the pump 27. In the heat receiving part 29, it is preferable to meander the flow path so as to receive heat to the liquid refrigerant w2 as much as possible.

  The cooling device of this embodiment is a liquid refrigerant circulation device 26, and the main control device 11 controls the operation or the cooling amount of the liquid refrigerant circulation device 26 according to the temperature detected by the temperature detection means 21. Thereby, the frequency with which the liquid refrigerant circulation device 26 operates is reduced. For this reason, the operation sound of the liquid refrigerant circulation device 26 is reduced. In addition, the life of the liquid refrigerant circulation device 26 is extended. Moreover, the maintenance frequency of the elevator system 1 is reduced. As a result, the elevator system 1 of the present embodiment can reduce the frequency of stopping the operation of the elevator system 1 and can continuously provide an elevator service.

  Alternatively, in order for the liquid refrigerant circulation device 26 to increase the cooling amount, the discharge amount of the pump is increased. That is, according to the temperature of the detection result of the temperature detecting means 21, when the temperature of the detection result is higher than a predetermined temperature, the discharge amount of the pump is increased. When the temperature of the detection result is lower than the predetermined temperature, the pump discharge amount is decreased. For this reason, the life of the liquid refrigerant circulation device 26 becomes longer than when the liquid refrigerant circulation device 26 operates with the same cooling amount. In addition, if the liquid refrigerant circulation device 26 is a blower, it is possible to reduce the operating noise because the number of rotations of the fan with the required cooling amount can be suppressed.

  In the elevator system 1 of the present embodiment, the cooling device is the liquid refrigerant circulation device 26, and the main control device 11 controls the operation or the cooling amount of the liquid refrigerant circulation device 26 according to the temperature detected by the temperature detection means 21. . The liquid refrigerant circulation device 26 has a higher cooling capacity than the blower. Thereby, the iron core volume of the rotor 52 can be reduced. As a result, the cost of the hoisting machine 5 can be reduced.

[Embodiment 6]
FIG. 11 is a diagram illustrating an operation flow of the elevator system according to the sixth embodiment. The elevator system 1 according to the sixth embodiment can continue the elevator service even when the temperature detecting means 21 is abnormal.

  As shown in FIG. 11, the elevator system 1 according to the present embodiment operates the cooling device (step S31). For example, referring to FIG. 2 and FIG. 3, the main control device 11 of the present embodiment includes a car equipment control unit 111, a calculation unit 112, a cooling device control unit 113, a hoisting machine control unit 114, Is included. Here, the cooling device control unit 113 supplies power to the cooling device 25 and operates the cooling device 25.

  Next, the calculation part 112 of the main controller 11 obtains the detection result from the temperature detection means 21 and performs temperature detection of the hoisting machine main body (step S32). Next, the calculating part 112 judges abnormality of temperature detection (step S33). When it is determined that the temperature detection is normal (No at Step S23), the calculation unit 112 continues the temperature detection of the hoisting machine body (Step S22). For example, the calculation unit 112 determines that the temperature detection unit 21 is abnormal when the temperature of the detection result of the temperature detection unit cannot be obtained or is always a constant value (step S33, Yes). In this case, the cooling device control unit 113 supplies power to the cooling device 25 and maintains the operation of the cooling device 25.

  The elevator system 1 of the sixth embodiment may perform the restriction (step S34) of the elevator service exemplified in the third embodiment. Since the temperature detection means 21 is in the vicinity of the motor unit main body 50, the abnormality of the temperature detection means 21 may be caused by the state of the hoisting machine 5. By performing the restriction of the elevator service (step S34), the overheating of the hoisting machine 5 is further reduced. The elevator system 1 according to the sixth embodiment provides information on the abnormality of the temperature detection means 21 to, for example, a maintenance service person or the like (step S35). Thereby, abnormality of the temperature detection means 21 can be specified at an early stage.

  In the elevator system 1 of Embodiment 6 described above, when the main control device 11 determines that the temperature detection means 21 is abnormal, the main control device 11 maintains the cooling device 25 in an operating state. Thereby, the hoisting machine 5 is always cooled by the cooling device 25, so that overheating is suppressed. As a result, the elevator system 1 according to the sixth embodiment can continue the elevator service even when the temperature detecting means 21 is abnormal. Further, the main control device 11 performs control so as to lengthen the operation interval of the car 2 that is the lifting body during the operation of the cooling device 25. Alternatively, the elevator system 1 according to the sixth embodiment includes the load detection means 23 that detects the load amount loaded on the car 2, and the main controller 11 reduces the overload amount reference during the operation of the cooling device 25. However, when it is determined that the load amount is equal to or more than the reference of the overload amount, the car 2 is kept stopped. By performing such an elevator service restriction, the overheating of the hoisting machine 5 is further reduced.

  In the elevator system 1 of the sixth embodiment, when the main control device 11 determines that the temperature detection means 21 is abnormal, the main control device 11 sets the hoist 5 so that the elevator car 2 that is a lifting body is stopped on a predetermined floor. You may control. In this case, the cooling device 25 may be stopped or may remain operating. Thereby, the elevator system 1 can be operated more safely.

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

1 Elevator system 2 Car (elevating body)
3 Guide device (elevating body regulating device)
4 Main rope (rope)
DESCRIPTION OF SYMBOLS 5 Hoisting machine 6 Warpage sheave 7 Counterweight 11 Main controller 12 Car guide rail 13 Weight guide rail 14 Hoistway 15 Machine room 20 Opening / closing door 21, 22 Temperature detection means 23 Load detection means 24 Ride car control part 25 , 25A, 25B, 25C Cooling device 26 Liquid refrigerant circulation device 50 Motor unit body 51 Stator

When the arithmetic unit 112 determines that the hoisting machine is abnormal (step S4, Yes), the hoisting machine control unit 114 stops the power supply of the hoisting machine 5 and stops the hoisting machine 5 (step S8). Calculation unit 112, if it is determined that there is no abnormality is made of the hoisting machine (step S 4, No), the cooling device control unit 113 supplies power to the cooling device 25, cooling device 25 is operated (step S5 ).

Claims (9)

A lifting body that moves up and down along the guide rail;
A rope connected to the lifting body;
A hoisting machine on which the rope is wound and lifting the lifting body;
Temperature detecting means for detecting a temperature change of the hoisting machine;
A cooling device for cooling the hoist according to the detection result of the temperature detecting means;
A control device that performs drive control of at least the hoisting machine;
An elevator system comprising: The temperature detecting means is a temperature sensor;
The elevator system according to claim 1, wherein the control device controls an operation or a cooling amount of the cooling device in accordance with a temperature detected by the temperature sensor. The cooling device is a blower,
The elevator system according to claim 2, wherein the control device controls an air volume of the blower according to a temperature detected by the temperature detection unit. There are a plurality of the cooling devices,
The elevator system according to claim 2, wherein the control device controls the number of operations of the cooling device in accordance with the temperature detected by the temperature detection means. The cooling device is a liquid refrigerant circulation device,
The elevator system according to claim 2, wherein the control device controls an operation or a cooling amount of the liquid refrigerant circulation device in accordance with a temperature detected by the temperature detection means.   The elevator system according to claim 1, wherein the temperature detection means is a thermostat, and the cooling device operates in accordance with the operation of the thermostat.   The elevator system according to any one of claims 1 to 6, wherein when the control device determines that the temperature detection unit is abnormal, the control device maintains a state in which the cooling device operates.   The said control apparatus is an elevator system of any one of Claim 1 to 7 controlled so that the driving | operation space | interval of the said raising / lowering body may be lengthened during operation | movement of the said cooling device. Including a load detection means for detecting a load loaded on the lifting body,
The control device lowers the reference of the overload amount during the operation of the cooling device, and maintains the suspension of the lifting body when the load amount is determined to be equal to or greater than the reference of the overload amount. The elevator system according to any one of 7.

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