CN110683440A - Reporting device and reporting method - Google Patents

Abstract

Embodiments of the present invention relate to a reporting device and a reporting method, which can facilitate movement of a rope to an inspection position. The report device according to the embodiment includes: a detection unit for detecting an abnormality occurrence position at which an abnormality occurs in a rope of an elevator apparatus; and a position reporting unit that reports, when the car of the elevator apparatus is moved by the driving of the rope, that the car has reached a visual recognition position where the abnormality occurrence position detected by the detecting unit can be visually recognized.

Description

Reporting device and reporting method

The application is based on Japanese patent application 2018 and 128368 (application date: 7/5/2018), and benefits of priority are enjoyed according to the application. This application incorporates by reference the entirety of this application.

Technical Field

The embodiment of the invention relates to a reporting device and a reporting method.

Background

There has been proposed an apparatus for automatically detecting an abnormality such as elongation of a rope for raising and lowering a car of an elevator apparatus using a sensor provided near a main sheave. On the other hand, when the elevator apparatus is overhauled, the worker is forced to perform an inspection of the rope by visual confirmation and report the inspection result. Therefore, even if an abnormality of the rope is automatically detected, the operator must move the car by a manual operation separately to a position where the abnormality can be visually confirmed, and visually confirm the abnormality of the rope from a work table provided on the car.

On the other hand, in the configuration of the rope winding ratio of the elevator apparatus, 1: the moving distance of the rope is different from the moving distance of the car when the car is not in the state of 1. Therefore, it is difficult for the operator to perceptually grasp the car position where the automatically detected abnormality can be visually confirmed. Therefore, the operator must calculate the position by calculation using an electronic calculator or the like, but the content of the calculation differs depending on the configuration of the elevator apparatus. Therefore, such calculation is difficult for an operator who must service elevator apparatuses of various configurations.

Disclosure of Invention

An object of an embodiment of the present invention is to facilitate movement of a rope to a service site.

In order to solve the above problem, a notification device according to an embodiment includes: a detection unit for detecting an abnormality occurrence position at which an abnormality occurs in a rope of an elevator apparatus; and a position reporting unit that reports, when the car of the elevator apparatus is moved by the driving of the rope, that the car has reached a visual recognition position where the abnormality occurrence position detected by the detecting unit can be visually recognized.

According to the notification device of the embodiment, the movement of the rope to the inspection position can be easily performed.

Drawings

Fig. 1 is a main part configuration diagram of an elevator apparatus according to an embodiment.

Fig. 2 is a diagram showing the optical sensor and the resin attached to the rope.

Fig. 3 is a diagram showing a position signal obtained by the optical sensor.

Fig. 4 is a diagram showing a configuration of the control device.

Fig. 5 is a diagram showing the configuration of the processing apparatus.

Fig. 6 is a diagram showing a control routine executed by the control device of the elevator apparatus.

Fig. 7 is a diagram showing a position signal when the rope elongates.

Fig. 8 is a diagram showing positions of the end A, B, the optical sensor, and the pulley in the rope.

Fig. 9 is a diagram showing a method of calculating a visual confirmation position.

Fig. 10 is a flowchart showing the processing of the control program.

Detailed Description

Hereinafter, embodiments will be described in detail with reference to the drawings. In the following drawings, the constituent elements are appropriately omitted to avoid complication of the drawings.

[ Elevator device 1]

Fig. 1 is a main part configuration diagram of an elevator apparatus 1 according to an embodiment. As shown in fig. 1, a car 12 and a counterweight 13 are provided so as to be movable up and down by guide rails (not shown) in an elevator shaft 11 formed in a building (not shown). Further, along the ascending/descending path 11, a hall 27 and an operation panel (not shown) are provided at each floor of the building. A sheave 12a is mounted on a support frame of the car 12. A pulley 13a is attached to the counterweight 13.

A hall sensor 122 is provided in a lower portion of the car 12 on the hall 27 side. Further, a work table 124 is provided on the car 12. An operation panel 120 is provided inside the car 12 and on the work table 124.

A machine room 15 is provided above the elevator shaft 11. A load beam 17 is provided on a floor 16 of the machine room 15, and a base 19 is provided thereon via a support member 18. A control device 32 and a small-sized hoisting machine 22 having a small-diameter main sheave 21 are provided on the machine base 20 on the machine base 19. An optical sensor 30 is provided near the rope 23 of the main sheave 21.

A main rope (hereinafter, referred to as a rope) 23 is wound around the main sheave 21, and the rope 23 passes through a guide sheave 24 provided at a lower portion of the machine room 15, and then passes through an opening 16a provided in the floor 16 to reach the inside of the elevator shaft 11.

In addition, the rope winding ratio of the elevator apparatus 1 shown in fig. 1 is configured to be 2: 1, after the rope 23 is wound around the pulley 12a, the end a of the rope 23 is connected to a main rope holder (hereinafter, referred to as a rope hitch) 25 provided in the ascending/descending path 11. Further, after the rope 23 is wound around the pulley 13a provided on the upper side of the counterweight 13, the end B of the rope 23 is similarly connected to the head plate 25 provided in the elevator shaft 11.

The rope hitch plate 25 is provided at an upper portion in the elevator shaft 11, and is held and fixed by a bracket 26 as shown in fig. 1, and one end of the bracket 26 is fixed to the load beam 17 provided in the machine room 15. That is, the bracket 26 extends from the inside of the machine room 15 into the elevator shaft 11 through the opening 16a formed in the floor 16, and the rope hitch 25 is held and fixed by the other end (lower end in the figure) of the bracket 26.

The elevator shaft 11 is a cylindrical space in which the car 12, the counterweight 13, and the like are raised and lowered. The car 12 is a car on which passengers ride. The sheave 12a is a sheave around which a rope 23 is wound and which moves the car 12 up and down by driving the rope 23. The counterweight 13 is a weight whose weight is adjusted so as to be a predetermined ratio to the weight of the car 12. The pulley 13a is a pulley around which a rope 23 is wound and which moves the counterweight 13 up and down by driving the rope 23.

The operation panel 120 is a panel on which destination buttons of the car 12, buttons and switches for operating opening and closing of doors by passengers and workers, a speaker for outputting voice, a buzzer for sounding, a vibrator for vibrating the operation panel 120, a light emitting diode (not shown), and the like are arranged. The hall sensor 122 is a sensor for detecting that the car 12 arrives at the hall 27 and that the car 12 moving up and down inside the elevator shaft 11 passes through the hall 27. The work table 124 is a platform that can be moved in and out by an operator for maintenance and inspection (hereinafter, simply referred to as "inspection").

The machine room 15 is a dedicated room in which the hoist 22 and the like are installed, and is installed on a shed or a roof. The floor 16 is a floor of the machine room 15 provided with the load-bearing beam 17. The load beam 17 is a member on which a base 19 is provided via a support member 18. The support member 18 is a member for supporting the base 19 on the bearing beam 17. The base 19 is a base member to which the base 20 is attached. The base 20 is a part to which the hoist 22 and the control device 32 are attached to the base 19.

The main sheave 21 is a sheave that winds a rope 23, is rotated and driven by a hoist 22, drives the rope 23, and raises and lowers the car 12 inside the elevator shaft 11. The hoisting machine 22 is a high-speed rotation type gearless drive device incorporating a motor, a reducer, a brake, a sheave, and the like for operating the elevator apparatus 1.

The rope 23 is a steel wire connecting the car 12 and the counterweight 13. As described above, the end a of the rope 23 is the end close to the pulley 12a, and the end B of the rope 23 is the end close to the pulley 13 a. The guide sheave 24 is a sheave that guides the rope 23 wound around the hoist 22 to the upper portion of the counterweight 13. The rope hitch 25 is a member for connecting the rope 23 to the upper portion in the elevator shaft 11. The bracket 26 is a member for fixing the rope hitch plate 25 to the load beam 17. The lobby 27 is an elevator hall installed on each floor of the building where the elevator apparatus 1 is installed.

The optical sensor 30 is a sensor that irradiates the rope 23 with light for detection and detects the intensity of the light for inspection reflected by the rope 23. The control device 32 is connected to the optical sensor 30, the operation panel 120, the hall sensor 122, and the hoist 22, processes information obtained from these, and controls these to operate the elevator apparatus 1.

Fig. 2 is a view showing the optical sensor 30 shown in fig. 1 and a resin 230 attached to the rope 23. As shown In fig. 2, a resin 230 that reflects light more strongly than the natural color of the rope 23 is added to the rope 23 at a constant distance In (as an initial value when the elevator apparatus 1 is installed, for example, In is 30 cm). The optical sensor 30 is provided in the vicinity of the rope 23 wound around the main sheave 21, irradiates the rope 23 with light, generates a position signal indicating the intensity of the reflected light, and outputs the position signal to the control device 32.

Fig. 3 is a diagram showing a position signal obtained by the optical sensor 30. As shown in fig. 3, the intensity of the reflected light from the rope 23 driven by the hoist 22 at the driving speed v is stronger at the portion reflected from the resin 230 than at other portions. Therefore, the intensity of the position signal obtained by the optical sensor 30 by detecting the reflected light from the rope 23 also has a peak at a portion corresponding to the reflected light reflected by the resin 230.

[ control device 32]

Fig. 4 is a diagram showing the configuration of the control device 32. The control device 32 is composed of a processing device 34 and a drive unit 38.

The drive unit 38 includes a power supply, an inverter, and the like for supplying power to the hoist 22. The drive unit 38 drives each component of the elevator apparatus 1 such as the hoist 22 in accordance with an instruction from the processing device 34.

Fig. 5 is a diagram showing the configuration of the processing device 34. The processing device 34 is a computer having an arithmetic circuit 342, a main storage unit 344, an auxiliary storage unit 346, an operation panel 348, an interface unit 350, and a bus 340 connecting these units.

The arithmetic circuit 342 includes a CPU (central Processing unit), a peripheral circuit of the CPU, and a circuit (not shown) for managing time. The arithmetic circuit 342 performs arithmetic operations based on a program stored in the auxiliary storage unit 346, and controls the above-described units.

The main storage unit 344 includes a ram (random Access memory) and the like. The main storage portion 344 is used as a work area of the arithmetic circuit 342.

The auxiliary storage unit 346 includes a nonvolatile memory such as a rom (read Only memory) or a semiconductor memory. The auxiliary storage unit 346 stores programs executed by the arithmetic circuit 42, various parameters, and the like. The auxiliary storage unit 346 stores data and the like as a result of arithmetic processing by the arithmetic circuit 342.

The operation panel 348 has, for example, buttons or a gui (graphical User interface). The manager or operator of the elevator apparatus 1 can input various commands and various information to the arithmetic circuit 342 via the operation panel 348.

The interface section 350 has a serial interface, a parallel interface, and the like. In the processing device 34, the optical sensor 30, the operation panel 120, and the hall sensor 122 are connected to the arithmetic circuit 342 via the interface unit 350.

[ procedure ]

Fig. 6 is a diagram showing a control program 36 executed by the control device 32 of the elevator apparatus 1. The control program 36 is used when processing for controlling the elevator apparatus 1 by the control device 32 is performed by software. The command code of the control program 36 is stored in the auxiliary storage 346 in the processing device 34 of the control device 32, and is executed by the arithmetic circuit 342 to perform arithmetic operations necessary for processing such as control of the elevator apparatus 1 and reporting of a position and an abnormality.

As shown in fig. 6, the control program 36 executed by the arithmetic circuit 342 realizes functions as an operation receiving portion 360, a position signal processing portion 362, an abnormality detecting portion 364, an abnormality notifying portion 366, a car position calculating portion 368, an abnormality position detecting portion 370, a visual confirmation position calculating portion 372, a control portion 374, and a position notifying portion 376.

The operation receiving unit 360 receives operations of the passenger or the operator on the operation panel 120 (see fig. 1) of the interior of the car 12 and the work table 124 and on an operation panel (not shown) provided in the elevator hall 27 via the interface unit 350. The operation receiving portion 360 outputs operation information indicating the received operation to the car position calculating portion 368 and the control portion 374.

The control unit 374 controls the operation of each component of the elevator apparatus 1 using the operation information input from the operation receiving unit 360, the car position information input from the car position calculating unit 368, and the visual confirmation position information input from the visual confirmation position calculating unit 372. That is, the control unit 374 causes the elevator apparatus 1 to perform normal operation in accordance with the operation of the passenger or operation for visual check of the rope 23 in accordance with the operation of the operator. The operation for visual confirmation inspection includes: the automatic stop of the car 12 at the position indicated by the position information, the movement of the car by the manual operation of the operator on the work table 124, and the like are visually confirmed.

The control unit 374 sequentially outputs speed information indicating the value v of the drive speed of the rope 23 at each time to the abnormality detection unit 364. When the car 12 reaches the position indicated by the visual position information, the control portion 374 notifies the position notification portion 376 of this fact. More specifically, when the difference between the position of the car 12 and the position indicated by the visual position information is equal to or less than a predetermined threshold value, the control portion 374 determines that the car 12 has reached the position indicated by the visual position information, and notifies the position notification portion 376 of the fact. In addition, the control portion 374 notifies the position notification portion 376 of the approach of the position of the car 12 and the position of the counterweight 13 in the hoistway 11.

When the control portion 374 notifies that the car 12 has reached the position indicated by the visual confirmation position information, the position notification portion 376 visually or audibly notifies the operator of the fact through the operation panel 120. The report is made by outputting a predetermined voice from a speaker of the operation panel 120, intermittently operating a buzzer and a vibrator of the operation panel 120 at a predetermined timing, or blinking a light emitting diode of the operation panel 120 at a predetermined timing.

When the control portion 374 notifies that the car 12 and the counterweight 13 are approaching, the position notification portion 376 visually or audibly notifies the operator of this fact through the operation panel 120 in a manner different from when the car 12 reaches the position indicated by the visual confirmation position information. This report is made by outputting a different voice from that when the car 12 reaches the position indicated by the visual recognition position information from the speaker of the operation panel 120. Alternatively, the report is made by intermittently operating the buzzer and the vibrator of the operation panel 120 at a timing different from that when the car 12 reaches the position indicated by the visual position information. Alternatively, the report is made by blinking the light emitting diode of the operation panel 120 at a timing different from the timing when the car 12 reaches the position indicated by the visual confirmation position information.

The position signal processing unit 362 processes the position signal (see fig. 3) input from the optical sensor 30 via the interface unit 350, and detects a portion where the intensity has a peak among the position signals. The position signal processing unit 362 outputs timing information indicating the timing at which the intensity of the detected position signal exhibits a peak to the abnormality detecting unit 364 and the car position calculating unit 368.

The processing of the abnormality detection section 364 will be described. When the driving speed of the rope 23 is the value v and the initial distance interval In of the resin 230 is not elongated, the time interval of the peak value of the intensity In the position signal can be calculated from the distance interval In of the resin 230 and the driving speed v of the rope 23. That is, as shown In fig. 3, the time interval is calculated as a value T (T ═ In ÷ v) obtained by dividing the distance interval In of the resin 230 by the driving speed v.

Fig. 7 is a diagram showing a position signal when the rope 23 is elongated. On the other hand, as shown In fig. 7, if an abnormality occurs In the elongation length α In a portion between the resins 230 of a certain group In the rope 23, the distance interval value of the portion becomes In + α. In fig. 3 and 7, if the driving speed v of the rope 23 does not change, the value of the time interval of the peak value of the intensity of the position signal corresponding to the portion where the abnormality has occurred shown In fig. 7 is T + Δ T (T + Δ T ═ In + α ÷ v) longer than the time interval T of the peak value of the intensity of the position signal obtained from the other portion. On the other hand, the distance interval In + α and the value α of the elongation of the resin 230 at the portion of the rope 23 where the abnormality has occurred can be obtained from the initial distance interval In of the resin 230, the time interval T + Δ T, and the driving speed v indicated by the speed information.

The abnormality detection unit 364 processes the driving speed v indicated by the speed information input from the control unit 374 and the timing information input from the control program 363, and detects whether or not an abnormality such as elongation has occurred in each part of the rope 23. The abnormality detector 364 calculates the elongation α of the rope 23 at the portion where the abnormality occurs, and stores the elongation α in the main storage unit 344 or the auxiliary storage unit 346 (see fig. 5). The abnormality detection unit 364 obtains and stores the time TA at which the occurrence of an abnormality is detected from the circuit for managing time included in the arithmetic circuit 342. The abnormality detector 364 sequentially outputs abnormality detection information indicating the occurrence of an abnormality and the stored elongation α and time TA to the abnormality reporting unit 366 and the abnormal position detector 370.

The time TA is stored in a form of a year, B month, C day, D minute, E second, and the like. At time TA, the number of digits equal to or smaller than the decimal point of E representing seconds is set to a number that can determine which resin 230 of the rope 23 has an abnormality between them from the distance interval of the resins 230 and the driving speed v of the rope 23.

In the inspection of the rope 23, an abnormality may be detected in a plurality of portions. At this time, after the inspection of the rope 23 is completed, the abnormality detection unit 364 obtains a value indicating the maximum abnormality as the elongation α max of the position from the plurality of elongations α stored. Further, the abnormality detection unit 364 stores the elongation α max in the main storage unit 344 or the auxiliary storage unit 346 in association with the time TA at which the elongation occurs. The abnormality detector 364 further outputs abnormality detection information indicating the stored elongation α max and the time TA of occurrence thereof to the abnormality reporting unit 366 and the abnormal position detector 370.

When the abnormality detection information indicating that an abnormality has occurred in the rope 23 is input from the abnormality detection unit 364, the abnormality notification unit 366 immediately outputs the voice information indicating that an abnormality has occurred in the rope 23 from the speaker of the operation panel 120, and audibly notifies the operator. The abnormality notification unit 366 blinks the light emitting diode of the operation panel 120 via the interface unit 350, and visually notifies the operator of the occurrence of an abnormality in the rope 23.

When the car 12 is positioned at the uppermost part of the elevator shaft 11, the car position calculation unit 368 initializes the count value n to 0. The car position calculating unit 368 increments (increments) the count value n by 1 every time the peak value of the intensity of the detected position signal is indicated by the timing information input from the position signal processing unit 362 while the car 12 is descending on the ascending/descending path 11. On the other hand, the car position calculation unit 368 decreases (decrements) the count value n by 1 every time the peak value of the intensity of the detected position signal is indicated by the timing information while the car 12 is ascending in the ascending/descending path 11.

Fig. 8 is a diagram showing positions of the end A, B of the rope 23, the optical sensor 30, and the pulley 12 a. In fig. 8 and the like, the length of the rope 23 in the machine room 15 (see fig. 1) and the length of the rope 23 wound around the pulleys 12a and 13a are omitted for clarity of description.

The car position calculation unit 368 multiplies the count value n thus obtained by the initial value (30cm) of the distance interval of the resin 230. Then, the car position calculation unit 368 corrects the multiplication value (n × 30cm) in consideration of the length of the rope 23 in the machine room 15 and the length of the rope 23 wound around the pulleys 12a and 13a, and sequentially calculates the distance LA from the end a of the rope 23 to the pulley 12a shown in fig. 8.

When the position of the hall sensor 122 detects the position of the hall 27, the car position calculation unit 368 sequentially corrects, updates, and stores the value LA stored in the main storage unit 344 or the auxiliary storage unit 346, based on the detected position of the hall 27. The car position calculating unit 368 sequentially outputs the stored distance LA to the control unit 374 and the abnormal position detecting unit 370 as car position information indicating the position of the car 12.

In addition, as shown in fig. 8, the pulley 13a is located at the center between the optical sensor 30 and the end B of the rope 23. Therefore, the car position calculating unit 368 can calculate the distance LB (LB ═ 2LA ÷ 2) between the optical sensor 30 or the end B and the sheave 13a of the counterweight 13, from the length and distance LA of the rope 23. The car position calculating unit 368 calculates and stores the distance LB in this manner, and sequentially outputs the stored distance LB to the control unit 374 as counterweight position information indicating the position of the counterweight 13. When the distance LA and the distance LB are substantially equal, the car 12 and the counterweight 13 approach each other inside the ascending/descending path 11.

The abnormal position detecting unit 370 detects the distance LA indicated by the car position information input from the car position calculating unit 368 as the abnormal occurrence position ap (abnormality point) where an abnormality occurs at the time TA when the abnormality detection information input from the abnormality detecting unit 364 indicates the occurrence of an abnormality. The rope winding ratio of the elevator apparatus 1 (see fig. 1) is configured to be 2: 1, therefore, as shown in fig. 8, when the pulley 12a is located at a distance LA from the end a of the rope 23, the optical sensor 30 is located at a distance LA 2 times (2LA) the distance LA from the end a of the rope 23.

That is, in the state shown in fig. 8, when an abnormality in the rope 23 is detected by the abnormality detection unit 364, the abnormality occurrence position AP where the abnormality has occurred is located at a portion corresponding to the position of the optical sensor 30, that is, a portion where the distance from the end a of the rope 23 has a value of 2 × LA. The abnormal position detecting unit 370 detects the distance LA shown in fig. 8 as a value indicating the abnormal occurrence position AP where an abnormality occurs in the rope 23 every time an abnormality is detected, and stores the value in association with the time TA when the abnormality occurs. The abnormal position detecting unit 370 outputs the abnormal position information indicating the stored distance LA to the visual confirmation position calculating unit 372.

Fig. 9 is a diagram showing a method of calculating a visual confirmation position. The visual confirmation position calculation unit 372 calculates a distance at which the operator on the work table 124 can visually confirm the abnormality occurrence position based on the distance LA indicated by the abnormal position information input from the abnormal position detection unit 370. When an abnormality is detected in the case shown in fig. 8, if the distance from the end a of the rope 23 to the pulley 12a is 2 times the distance LA indicated by the abnormal position information as shown in fig. 9, the abnormality occurrence position AP where the occurrence of an abnormality is detected coincides with the position of the pulley 12 a.

The visual confirmation position calculation unit 372 corrects the value 2 times the distance LA to a value LA' that allows the operator on the work table 124 to easily visually confirm the position where the abnormality is detected and calculates the distance as the visual confirmation position. The abnormal position detecting unit 370 stores the calculated visual confirmation position LA ', and outputs visual confirmation position information indicating the visual confirmation position LA' to the control unit 374.

[ processing of control program 36 ]

The overall processing of the control program 36 will be described below. Fig. 10 is a flowchart showing the processing of the control program 36 shown in fig. 6.

In step S100, the operation acceptance portion 360 determines whether or not the operator performing the inspection of the elevator apparatus 1 (see fig. 1) has performed an operation for the inspection on the operation panel 120 inside the car 12 or the operation panel of the hall 27. When the operation for inspection is performed (yes in the process of S100), the control program 36 proceeds to a process of S104. When the operation for inspection is not performed (no in the process of S100), the control program 36 proceeds to a process of S102. In step S102, the control program 36 causes the elevator apparatus 1 to perform a normal operation of moving the car 12 carrying the passengers to the waiting hall 27 at each floor of the building without performing an operation for inspection, and ends the processing.

In step S104, the operation accepting unit 360 determines whether or not the operator has performed an operation for performing automatic inspection of the rope on the operation panel 120. When the operation for automatic maintenance is performed (yes in the process of S104), the control program 36 proceeds to a process of S110. When the operation for automatic maintenance is not performed (no in the process of S104), the control program 36 proceeds to a process of S106. In step S106, the control program 36 causes the elevator apparatus 1 to perform an operation for inspection of items other than the automatic inspection of the rope 23, and ends the processing.

In step S110, the control unit 374 causes the elevator apparatus 1 to perform an operation for automatic maintenance of the rope 23. That is, the control portion 374 raises the car 12 to the uppermost portion of the ascending/descending path 11, and then lowers the car to the lowermost portion of the ascending/descending path 11 at a constant speed. The control unit 374 then outputs speed information indicating the driving speed v of the rope 23 to the abnormality detection unit 364 and the abnormal position detection unit 370. While the automatic inspection of the rope 23 is being performed, the optical sensor 30 outputs a position signal to the control device 32 (see fig. 3 and the like).

The position signal processing unit 362 outputs timing information to the abnormality detecting unit 364 and the car position calculating unit 368. The car position calculating unit 368 calculates the distance LA (see fig. 8). The abnormality detection section 364 detects whether an abnormality has occurred in the rope 23.

In step S112, the control unit 374 determines whether or not the car 12 has reached the lowermost part of the elevator shaft 11 and the operation for automatic maintenance of the ropes 23 has been completed. When the operation for automatic inspection by the control device 32 is completed (yes in S112), the control program 36 proceeds to S130. If the operation for automatic inspection is not completed (no in S112), the control program 36 proceeds to S114.

In step S114, the abnormality detection section 364 determines whether or not an abnormality is detected in the rope 23. When an abnormality is detected in the rope 23 (yes in S114), the control program 36 proceeds to S116. If an abnormality is not detected in the rope 23 (no in the processing of S114), the control program 36 returns to the processing of S110 to continue the automatic inspection of the rope 23.

In step S116, the abnormal position detecting unit 370 stores the distance LA when an abnormality is detected in the rope 23, and outputs the abnormal position information indicating the distance LA to the visual confirmation position calculating unit 372. The visual confirmation position calculation unit 372 calculates and stores the visual confirmation position LA' from the distance LA.

In step S118, the abnormality notification unit 366 uses a speaker, a buzzer, a vibrator, or a light emitting diode of the operation panel 120 to notify the operator that an abnormality is detected in the rope 23.

In step S130, the operation receiving unit 360 determines whether or not the operator has performed an operation to move the car 12 to the visual recognition position LA'. When the operation of moving the car 12 to the visual recognition position LA' is performed (yes in the process of S130), the control program 36 proceeds to a process of S132. When the operation of moving the car 12 to the visual recognition position LA' is not performed (no in the processing of S130), the control program 36 ends the processing.

In step S132, the abnormal position detecting unit 370 reads the stored distance LA and outputs the distance LA to the visual confirmation position calculating unit 372.

In step S134, the visual confirmation position calculation unit 372 calculates the visual confirmation position LA 'from the distance LA, and outputs the calculated position LA' to the control unit 374.

In step S136, the control unit 374 drives the hoisting machine 22 to raise the car 12 so that the distance between the end a of the rope 23 and the sheave 12a becomes LA'. When an abnormality occurs at a plurality of positions in the rope 23, a plurality of values LA' are obtained. At this time, while the car 12 is being raised, the control portion 374 stops the car 12 at all the visual confirmation positions indicated by the plurality of values LA', and the position notification portion 376 outputs a voice or the like prompting the operator to visually confirm from the operation panel 120. When the car 12 and the counterweight 13 approach each other, the control unit 374 notifies the position notification unit 376 of the approach, and the position notification unit 376 notifies the operator of the approach by voice or the like from the operation panel 120.

Further, the control portion 374 notifies the operator of the situation from the operation panel 120 by voice or the like every time the car 12 and the counterweight 13 approach each other in the ascending/descending path 11 while the car 12 is ascending. Each time the car 12 stops, the operator goes to the working platform 124 and visually checks the rope 23.

When the process for inspection of the rope 23 by the control program 36 described above is completed, the operator performs an operation of recording the inspection result of the rope 23 in a report or the like.

According to the elevator apparatus 1 according to the embodiment of the present invention, when the rope 23 is inspected, the position where the abnormality occurs in the rope 23 is automatically detected, and the car 12 can be automatically moved to the position where the abnormality occurs to become the visual position LA' that can be visually recognized by the operator. Therefore, according to the elevator apparatus 1, the rope can be easily moved to the inspection site.

The configuration of the elevator apparatus 1 can be changed so that, in addition to the elongation of the rope 23, an abnormality such as a ravel of the rope 23 can be detected. The control device 32 shown in fig. 1 may be integrally configured with a control panel (not shown) provided inside the machine room 15 in the elevator apparatus 1. When a plurality of ropes are used in parallel as the rope 23, it is possible to detect an abnormality occurring in each of the ropes and a position thereof by using a plurality of optical sensors 30 corresponding to the ropes.

The processing of the control program 36 may be changed so that the operator is notified of only the approach of the car 12 to the visual confirmation position LA' without automatically stopping the car 12 while the operator manually raises and lowers the car 12 on the work table 124. Position reporting unit 376 may also report using any combination of a speaker, a buzzer, a vibrator, and a light emitting diode of control panel 120. The processing of the control program 36 can be changed to: when an abnormality is detected at a plurality of positions in the rope 23, the car 12 is stopped so that only the position where the maximum abnormality has occurred can be visually confirmed based on the value α max and the time TA indicated by the abnormality detection information.

Further, since the driving speed v of the rope 23 at each time point may vary, the processing of the abnormality detection unit 364 and the like in the control program 36 can be changed in accordance with the driving speed v thus varying. In addition, the car 12 may be moved from the lowermost portion to the uppermost portion of the elevator shaft 11 for automatic inspection of the ropes 23.

In addition, the processing of the control program 36 can be changed to: except that the rope winding ratio is 2: 1, the rope winding ratio can be suitably set to m: 1(m is 1, 3, 4 … …). The processing of the control program 36 described with reference to fig. 8 and 9 may be changed to an elevator apparatus having a different configuration from the elevator apparatus 1 except for the roping ratio, which is suitable for the positional relationship between the sheaves 12a and 13a and the hoisting machine 22 with respect to the rope 23. The respective components of the control program 36 may be implemented by hardware as appropriate.

The embodiments of the present invention described above are presented as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various ways, and various omissions, substitutions, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

Claims (10)

1. A report device is provided with:

an arithmetic circuit that calculates a position to be visually checked in a rope of an elevator apparatus and a distance between the position to be visually checked and a position of a car of the elevator apparatus; and

and a notification unit configured to notify that the position to be visually confirmed is close to the car when the distance calculated by the calculation circuit is equal to or less than a predetermined threshold value.

2. A report device is provided with:

a detection unit for detecting an abnormality occurrence position at which an abnormality occurs in a rope of an elevator apparatus; and

and a position reporting unit that reports, when the car of the elevator apparatus is moved by the driving of the rope, that the car has reached a visual position at which the abnormality occurrence position detected by the detecting unit can be visually confirmed.

3. The reporting apparatus according to claim 2, further comprising:

a calculation unit that calculates the visual confirmation position; and

and a control device for controlling a drive device of the elevator device to drive the rope and move the car to the visual confirmation position calculated by the calculation part.

4. The reporting device of claim 3,

the cage is provided with a working platform used in the visual check operation,

the calculation unit calculates the visual confirmation position where the abnormality occurrence position can be visually confirmed from the work table, based on the abnormality occurrence position detected by the detection unit.

5. The report apparatus according to any one of claims 2 to 4, further comprising:

and an abnormality notification unit that, when the abnormality occurrence position is detected by the detection unit, further notifies the inside of the car of the detection of the abnormality occurrence position.

6. The reporting device of any one of claims 2 to 4,

the detection unit detects that elongation occurs in the rope as the abnormality.

7. The reporting device of any one of claims 2 to 4,

the detection unit further detects the abnormality occurrence position where the largest abnormality occurs among the plurality of detected abnormality occurrence positions when the plurality of abnormality occurrence positions are detected.

8. The reporting device of any one of claims 2 to 4,

the position reporting unit also reports that the position of the car is close to the position of the counterweight of the elevator apparatus.

9. The reporting device of claim 8,

the position reporting unit reports that the car has reached the abnormality occurrence position and reports that the position of the car and the position of the counterweight have approached each other in different modes.

10. A method of reporting, wherein,

an abnormality occurrence position where an abnormality occurs in a rope of an elevator apparatus is detected,

when the car of the elevator device moves, the situation that the car reaches a visual confirmation position where the detected abnormal position can be visually confirmed is reported.

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