JP2021098578A - Rope abnormality diagnostic system, rope abnormality diagnostic method, and program - Google Patents

Abstract

To provide a rope abnormality diagnostic system which reduces the load of a maintenance engineer.SOLUTION: A rope abnormality diagnostic system comprises an acquisition unit, a receiving unit, a determination unit 111, a storage unit, and a rotation control unit. The acquisition unit acquires the positional information of a rope. The receiving unit receives the detected signal from a first detecting unit detecting a marking on the rope. The determination unit 111 determines rope abnormality based on the detected signal from the first detecting unit. The storage unit stores travelling distance information and reference positional information indicating the positional information when a maintenance engineer on the elevator car can refer to the reference positional mark, the travelling distance information for moving the rope from the positional information when the first detecting unit detects the reference positional mark indicating the reference position on the rope to the positional information when the maintenance engineer on the elevator car can refer to the reference positional mark. The rotation control unit controls a motor rotation to the position where the abnormality of the rope can be visually recognized based on travelling distance information, reference positional information, and the positional information when the rope abnormality is determined, when the rope abnormality is determined by the determination unit 111.SELECTED DRAWING: Figure 1

Description

Embodiments of the present invention relate to a rope abnormality diagnosis system, a rope abnormality diagnosis method, and a program.

Conventionally, in the work of inspecting and confirming an apparatus, there has been known a technique of using an image captured by an imaging device instead of a worker or the like directly visually inspecting the object of inspection or confirmation. As an example of equipment inspection and confirmation work, there is a technique for inspecting deterioration of ropes used for elevators, cranes, bridges, and the like.

In the current rope diagnosis, it is possible to perform elongation diagnosis by providing markings on the rope at regular intervals and detecting the intervals between the making. Various techniques have been proposed to improve the accuracy of detecting rope elongation. For example, Patent Document 1 proposes a technique for improving the detection accuracy when the rope is tilted.

Then, when the elongation of the rope is detected, the rope is not replaced immediately. First, the maintenance staff inspects the detected part, determines whether or not the rope can be replaced, and when it is determined that the rope needs to be replaced, the rope is replaced.

In order for the maintenance personnel to investigate the detected location, it is necessary not only to identify the detected location but also to move the detected location to a position where it can be investigated. For example, the maintenance staff moves the rope until it becomes visible by raising and lowering the car while riding on the car. This makes it possible to visually recognize the detected portion.

Japanese Patent No. 6542416

However, in the prior art, only the lifting operation is provided to the maintenance staff, and there is no means for easily moving the detected portion to a position for the maintenance staff to visually confirm. Therefore, the work time and work load for the maintenance staff to inspect the portion detected as the elongation of the rope are large.

The present invention has been made in view of the above, and when an abnormality is detected in the rope, the rope abnormality diagnosis facilitates the movement control of the detected portion to a position where the maintenance staff can investigate. It is intended to provide systems, rope abnormality diagnostic methods, and programs.

The rope abnormality diagnosis system of the embodiment includes an acquisition unit, a reception unit, a determination unit, a storage unit, and a rotation control unit. The acquisition unit acquires the position information of the rope based on the rotation speed of the motor for winding the rope by the hoisting machine of the elevator. The receiving unit receives the detection signal from the first detecting unit that detects the marking given to the rope. The determination unit determines the abnormality of the rope based on the detection signal from the first detection unit. When the storage unit can refer to the reference position mark on the elevator car from the position information when the first detection unit detects the reference position mark indicating the reference position given to the rope. Up to the position information, the movement distance information for moving the rope and the reference position information indicating the position information when the maintenance staff on the elevator car can refer to the reference position mark are stored. The rotation control unit maintains the car based on the movement distance information, the reference position information, and the position information when the rope is determined to be abnormal when the determination unit determines that the rope is abnormal. A member controls the rotation of the motor to a position where the abnormality of the rope can be visually recognized.

FIG. 1 is a block diagram showing a schematic configuration example of an elevator system according to the first embodiment. FIG. 2 is a diagram illustrating the markings applied to the main rope and the first marking sensor in the first embodiment. FIG. 3 is a diagram illustrating the detection signal of the first marking sensor of the first embodiment. FIG. 4 is a diagram for explaining the moving distance information stored in the distance information storage unit of the first embodiment. FIG. 5 is a flowchart showing a control procedure for storing the movement distance information in the elevator control panel of the first embodiment. FIG. 6 is a flowchart showing a processing procedure when a maintenance person moves the abnormality to a position where the abnormality can be referred to when an abnormality of the main rope is detected in the elevator control panel of the first embodiment. FIG. 7 is a diagram illustrating the concept of control when the elevator control panel of the first embodiment detects an abnormality in the main rope. FIG. 8 is a block diagram showing a schematic configuration example of the elevator system according to the second embodiment. FIG. 9 is a diagram for explaining the second movement distance information stored in the distance information storage unit of the second embodiment. FIG. 10 is a flowchart showing a control procedure for storing the movement distance information in the elevator control panel of the second embodiment. FIG. 11 is a flowchart showing a processing procedure when a maintenance person moves the abnormality to a position where the abnormality can be referred to when an abnormality of the main rope in the elevator control panel of the second embodiment is detected. FIG. 12 is a block diagram showing a schematic configuration example of the elevator system according to the third embodiment. FIG. 13 is a diagram illustrating the positions of the marking sensors in the elevator system of the third embodiment. FIG. 14 is a flowchart showing a processing procedure when a maintenance person moves the abnormality to a position where the abnormality can be referred to when an abnormality of the main rope in the elevator control panel of the third embodiment is detected. FIG. 15 is a block diagram showing a schematic configuration example of the elevator system according to the fifth embodiment.

Hereinafter, the rope abnormality diagnosis system, the rope abnormality diagnosis method, and the program according to the illustrated embodiment will be described in detail with reference to the attached drawings. This embodiment describes a rope abnormality diagnosis system, a rope abnormality diagnosis method, and an elevator system to which a program is applied.

(First Embodiment)
FIG. 1 is a block diagram showing a schematic configuration example of the elevator system 1 according to the first embodiment. As shown in FIG. 1, the elevator system 1 includes an elevator control panel 100, a hoisting machine 122, a pulse generator (PG) 123, and a first marking sensor 131.

The elevator system 1 of the present embodiment is a so-called slip-type elevator in which a passenger car for getting on and off and a counterweight are connected by a main rope 130. The elevator system 1 controls the hoisting machine 122 to move the car up and down along the hoistway provided in the building to move the user to the elevator hall on the destination floor. Further, for the main rope 130, for example, a resin-coated rope may be used, but the type of rope is not limited.

The hoisting machine 122 can wind up the main rope 130 according to the driving force obtained from the motor 121. The pulse generator 123 detects a pulse value indicating the rotation speed of the motor 121 while the elevator system 1 is operating, and outputs the detected pulse value as pulse data to the elevator control panel 100.

The first marking sensor 131 detects the presence or absence of markings applied to the main rope 130.

FIG. 2 is a diagram illustrating the markings given to the main rope 130 and the first marking sensor 131. As shown in FIG. 2, the main rope 130 is marked with or without marking at predetermined intervals L. In the example shown in FIG. 2, it is assumed that the first region 201 and the third region 203 are marked, and the second region 202 is not marked. Then, the first marking sensor 131 detects whether or not the detection destination of the main rope 130 is marked, and outputs it as a detection signal.

FIG. 3 is a diagram illustrating the detection signal of the first marking sensor 131. The detection signal shown in FIG. 3A is a signal indicating the presence or absence of marking detected by the first marking sensor 131. Different values are output depending on whether there is marking or not. In the example shown in FIG. 3, _{the period from time t 0} to time t ₁ and after time t ₂ is the period during which the marking is detected, and the period from time t ₁ to time t ₂ is the period during which the marking is not detected.

The area 301 in FIG. 3 is a region where marking erroneous detection due to dirt 211 has occurred. The first marking sensor 131 includes a clock circuit (not shown). Then, as shown in FIG. 3B, the clock circuit outputs a clock signal.

As shown in FIG. 3C, the first marking sensor 131 controls so that a change in marking shorter than the clock signal is regarded as an erroneous detection and corrected. As a result, the accuracy of the detection signal output by the first marking sensor 131 can be improved.

Returning to FIG. 1, the elevator control panel 100 includes a control unit 102, a motor rotation control unit 103, a pulse data acquisition unit 104, a sensor signal reception unit 105, a distance information storage unit 106, and a distance calculation unit 107. To be equipped.

The pulse data acquisition unit 104 acquires pulse data from the pulse generator 123. The pulse data is a pulse value indicating the rotation speed of the motor 121 for hoisting the main rope 130 by the hoisting machine 122. Further, the pulse data acquisition unit 104 includes a counter circuit 108 that counts the pulse value input as pulse data. The counter circuit 108 counts down when, for example, a pulse value when the car is lowered is input, and counts up when a pulse value when the car is raised is input. Therefore, the pulse data acquisition unit 104 can acquire the count value of the counter circuit 108 as the position information of the car and the main rope 130 on the hoistway.

The motor rotation control unit 103 controls the pulse value given to the motor 121 based on the count value of the counter circuit 108 to execute an ascending / descending operation for moving the car to a target position.

The sensor signal receiving unit 105 receives the detection signal from the first marking sensor 131.

The control unit 102 includes a determination unit 111 and controls the entire elevator system 1.

The distance calculation unit 107 calculates the moving distance of the main rope 130 from the pulse value acquired by the pulse data acquisition unit 104 and the count value of the counter circuit 108.

The determination unit 111 determines the distance of the area where the marking of the main rope 130 is given based on the movement distance calculated by the distance calculation unit 107 and the presence / absence of marking by the detection signal received by the sensor signal reception unit 105. And the distance of the unmarked area is calculated. Then, the determination unit 111 determines whether or not the distance of the area where the marking is given or the distance of the area where the marking is not given is equal to or greater than a predetermined threshold value (for example, L + α), and the main rope 130 is stretched. Judge whether or not it is.

The distance information storage unit 106 refers to the reference position mark on the car from the detection position when the first marking sensor 131 detects the reference position mark indicating the reference position given to the main rope 130. As information on the movement distance to move the main rope 130 and the car to the referenceable position when possible, the pulse value of the motor 121 corresponding to the movement distance (in other words, the count between the detection position and the referenceable position). The movement distance information indicating the difference in value) is stored.

Further, the distance information storage unit 106 stores reference position information (counter value) indicating a referenceable position when a maintenance person on the car can refer to the reference position mark.

FIG. 4 is a diagram for explaining the moving distance information stored in the distance information storage unit 106 of the present embodiment. In the example shown in FIG. 4, the reference position mark 441 is attached to the main rope 130. Further, a hoist sheave 411 is provided, and a car 401 and a counterweight 402 (an example of a counterweight) are connected to the main rope 130. A first marking sensor 131 is provided in the vicinity of the hoisting machine 122.

Then, as shown in the example of FIG. 4A, the car 401 is from the maintenance worker 442 on the car 401 to a position where the reference position mark 441 attached to the main rope 130 can be visually recognized. Is moving.

In the example of FIG. 4B, the hoisting machine 122 controls the descent of the main rope 130 and the car 401 until the first marking sensor 131 detects the reference position mark 441. The pulse data acquisition unit 104 has a pulse corresponding to a moving distance 451 from a position when the maintenance worker 442 can visually recognize the reference position mark 441 to a position when the first marking sensor 131 detects the reference position mark 441. The value (difference between counter values) can be acquired as travel distance information.

Then, the distance information storage unit 106 sets a counter value corresponding to the moving distance 451 from the position where the maintenance worker 442 can visually recognize the reference position mark 441 to the position where the first marking sensor 131 detects the reference position mark 441. The indicated travel distance information is stored. Further, the distance information storage unit 106 stores reference position information indicating a count value indicating a position where the maintenance worker 442 on the car 401 in FIG. 4A can visually recognize the reference position mark 441.

Next, the processing procedure until the elevator control panel 100 stores the movement distance information in the distance information storage unit 106 will be described. FIG. 5 is a flowchart showing a control procedure for storing the movement distance information in the elevator control panel 100 of the present embodiment.

First, at the time of maintenance, the maintenance staff on the car 401 assigns the reference position mark 441 to the visible position of the main rope 130 existing on the opposite side via the hoisting machine 122 (S501). In the present embodiment, the reference position mark 441 is given after the car 401 has been moved to the uppermost position, but the reference position mark 441 is not limited to the uppermost position. At that time, the control unit 102 stores the count value of the counter circuit in the pulse data acquisition unit 104 as the reference position information indicating the count value indicating the position where the reference position mark 441 can be visually recognized (S502).

Then, the motor rotation control unit 103 controls the hoisting machine 122 and controls the descent of the car 401 (S503).

Then, the sensor signal receiving unit 105 determines whether or not the reference position mark 441 is detected based on the detection signal from the first marking sensor 131 (S504). If the reference position mark 441 is not detected (S504: No), the detection process is continued until the reference position mark 441 is detected.

On the other hand, when the sensor signal receiving unit 105 determines that the reference position mark 441 has been detected (S504: Yes), the motor rotation control unit 103 stops the descent control (S505).

Then, the distance calculation unit 107 uses the pulse value acquired by the pulse data acquisition unit 104 and the count value of the counter circuit to allow the maintenance personnel to visually recognize the reference position mark 441, and the first marking sensor 131 sets the reference position. A count value corresponding to the moving distance of the main rope 130 to a position where the mark 441 can be detected is calculated (S506).

Then, the distance calculation unit 107 stores the count value corresponding to the movement distance in the distance information storage unit 106 as the movement distance information (S507).

By performing the above-mentioned control, the distance information storage unit 106 can store the reference position information and the movement distance information based on the reference position mark 441.

Then, when the determination unit 111 determines that the rope is abnormal, the motor rotation control unit 103 includes the movement distance information, the reference position information, and the position information (counter value) when the determination unit 111 determines that the rope is abnormal. Based on the above, the maintenance staff on the car 401 rotates the motor 121 to a position where the abnormality of the main rope 130 can be visually recognized. Next, a specific control procedure will be described.

FIG. 6 is a flowchart showing a processing procedure when the maintenance staff moves the abnormality to a referenceable position when the abnormality of the main rope 130 is detected in the elevator control panel 100 of the first embodiment. ..

First, the motor rotation control unit 103 controls the hoisting machine 122 and starts the elevating control of the car 401 (S601).

Next, the determination unit 111 determines whether or not the position is the position where the abnormality of the main rope 130 has occurred, based on the pulse data received by the sensor signal reception unit 105 and the detection signal received by the sensor signal reception unit 105. (S602). If it is not determined that the position where the abnormality is detected (S602: No), the process is repeated until it is determined that the position where the abnormality has occurred. If there is no abnormal position in the main rope 130, the process is terminated assuming that there is no particular problem.

On the other hand, when the determination unit 111 determines that the position where the abnormality detection has occurred (S602: Yes), the motor rotation control unit 103 controls the stop of the car 401 (S603).

FIG. 7 is a diagram illustrating the concept of control when the elevator control panel 100 of the present embodiment detects an abnormality in the main rope 130. In the example shown in FIG. 7A, it is assumed that the abnormality 601 is detected at a predetermined position of the main rope 130 based on the detection signal from the first marking sensor 131.

In this case, as shown in FIG. 6, the motor rotation control unit 103 performs rotation control on the motor 121 corresponding to the count value indicated as the movement distance information stored in the distance information storage unit 106 (S604). ). As a result, the main rope 130 moves by the movement distance 451 shown in FIG.

The motor rotation control unit 103 controls the stop of the car 401 (S605).

Then, the distance calculation unit 107 calculates the difference between the count value indicated by the reference position information and the count value of the counter circuit 108 after the stop control is performed in S605 (S606). Thereby, the difference between the current position of the car 401 and the reference position where the maintenance staff can visually recognize the reference position mark 441 can be calculated. The count value of the counter circuit 108 after the stop control in S605 is a value obtained by counting up by the count value corresponding to the movement distance information from the counter value when it is determined that the main rope 130 is abnormal. In other words, the flowchart shown in FIG. 6 of the present embodiment shows the counter value when the main rope 130 is determined to be abnormal, the count value indicated by the reference position information, and the count value corresponding to the movement distance information. Based on the above, it can be said that the distance at which the rope abnormality can be moved to a position where the maintenance staff can see it is calculated.

In the example shown in FIG. 7B, after moving by the movement distance 451 the distance calculation unit 107 has a difference 611 between a counter indicating the reference position 651 and a counter value indicating the current position 652 of the car 401. Is calculated. Then, the distance calculation unit 107 can calculate the count value corresponding to the movement distance 612 in which the maintenance worker 442 moves to a position where the abnormality 601 can be referred to by multiplying the difference 611 by 1/2.

Returning to FIG. 6, the motor rotation control unit 103 performs rotation control corresponding to 1/2 of the count value corresponding to the difference 611 to the motor 121 (S607).

In the example shown in FIG. 7 (c), the maintenance worker 442 has moved to a position where the abnormality 601 can be referred to by performing the rotation control corresponding to 1/2 of the count value corresponding to the difference 611. Shown. In the present embodiment, by performing the above-mentioned control, it is possible to realize the movement control of the car 401 to a position where the maintenance worker 442 can confirm the abnormality 601. As a result, the work time of the maintenance staff 442 can be reduced and the work load can be reduced.

In this embodiment, an example of determining whether or not the main rope 130 is stretched will be described, but it is sufficient if it can be determined whether or not the main rope 130 is abnormal such as dirt.

(Second embodiment)
The connection mode between the main rope 130, the car 401, and the counterweight 402 is not limited to the configuration shown in the first embodiment, and there are various modes. Depending on the embodiment, since the roping of the main rope 130 is complicated, it may be preferable to provide a plurality of marking sensors in order to detect the elongation of the main rope 130. Therefore, in the second embodiment, the case where the marking sensor is provided on the counterweight 402 will be described.

FIG. 8 is a block diagram showing a schematic configuration example of the elevator system 2 according to the second embodiment. As shown in FIG. 8, the elevator system 2 includes an elevator control panel 800, a hoisting machine 122, a pulse generator 123, a first marking sensor 131, and a second marking sensor 831. The same reference numerals are assigned to the same configurations as those in the first embodiment, and the description thereof will be omitted.

The second marking sensor 831 is provided on the counterweight 402. The function of the second marking sensor 831 is the same as that of the first marking sensor 131, and the description thereof will be omitted.

The elevator control panel 800 is different from the elevator control panel 100 of the first embodiment in the sensor signal receiving unit 801, the distance information storage unit 802, the distance calculation unit 803, and the control unit 804. The control unit 804 includes a determination unit 811 whose determination process is different from that of the first embodiment. The specific control of the determination unit 811 will be described later.

The sensor signal receiving unit 801 receives a detection signal from the first marking sensor 131 provided near the hoisting machine 122, and also receives a detection signal from the second marking sensor 831 provided on the counterweight 402. To receive.

Then, the distance information storage unit 106 indicates a counter value corresponding to the moving distance from the position where the second reference position mark can be visually recognized to the position where the second marking sensor 831 detects the second reference position mark. The second movement distance information is stored. Further, the distance information storage unit 106 stores the second reference position information indicating the count value indicating the position where the maintenance worker 442 on the car 401 can visually recognize the second reference position mark.

FIG. 9 is a diagram for explaining the second movement distance information stored in the distance information storage unit 106 of the present embodiment. In the example shown in FIG. 9, the main rope 130 is provided with the second reference position mark 921. Further, sheaves 901 and 902 for guiding the main rope 130 are provided under the car 401, and sheaves 903 and 904 for guiding the main rope 130 are also provided under the counterweight 402. As a result, since the main rope 130 is longer than that of the first embodiment, the second marking sensor 831 will be used for detection.

Then, as shown in the example of (a) of FIG. 9, the maintenance staff on the car 401 rides until the position where the second reference position mark 921 given to the main rope 130 can be visually recognized. The basket 401 is moving. In the example shown in FIG. 9A, the car 401 and the counterweight 402 have the same height.

In the example of FIG. 9B, the hoisting machine 122 controls the raising of the main rope 130 and the car 401 until the second marking sensor 831 detects the second reference position mark 921. Is. The control raises the car 401 by a travel distance of 952.

The pulse data acquisition unit 104 moves from the position when the maintenance worker 442 can visually recognize the second reference position mark 921 to the position when the second marking sensor 831 detects the second reference position mark 921. The counter value corresponding to the distance 951 (in other words, the difference between the counter values between the positions) can be acquired as the second movement distance information.

Then, the distance information storage unit 802 moves a moving distance 951 from a position where the maintenance worker 442 can visually recognize the second reference position mark 921 to a position where the second marking sensor 831 detects the second reference position mark 921. The second movement distance information indicating the counter value corresponding to is stored. Further, the distance information storage unit 802 indicates a second reference position information indicating a count value indicating a position where the maintenance person on the car 401 in FIG. 9A can visually recognize the second reference position mark 921. Remember.

In addition to performing the same processing as in the first embodiment, the determination unit 811 adds markings based on the detection signal from the second marking sensor 831 and the pulse data acquired by the pulse data acquisition unit 104. The distance of the area where the marking is made or the distance of the area where the marking is not given is calculated, and it is determined whether or not the calculated distance is equal to or more than a predetermined threshold value (for example, L + α), and the main rope 130 is stretched. Determine if it is.

Next, the processing procedure until the elevator control panel 800 stores the movement distance information in the distance information storage unit 106 will be described. FIG. 10 is a flowchart showing a control procedure for storing the movement distance information in the elevator control panel 800 of the second embodiment.

First, at the time of maintenance, the motor rotation control unit 103 controls the hoisting machine 122 and starts the elevating control of the car 401 (S1001).

Then, the control unit 102 determines whether or not the car 401 and the counterweight 402 are at the same height (S1002). If it is determined that the heights are not the same (S1002: No), the determination process is continued.

On the other hand, when the control unit 102 determines that the car 401 and the counterweight 402 have the same height (S1002: Yes), the motor rotation control unit 103 controls the hoisting machine 122 to control the stop of the car 401. Do (S1003).

Then, the maintenance staff on the car 401 assigns the second reference position mark 921 to the visible position of the main rope 130 existing on the opposite side via the hoisting machine 122 (S1004).

At that time, the control unit 102 stores the count value of the counter circuit in the pulse data acquisition unit 104 as the second reference position information indicating the count value indicating the position where the second reference position mark 921 can be visually recognized. (S1005).

Then, the motor rotation control unit 103 controls the hoisting machine 122 and starts the ascending control of the car 401 (S1006).

Then, the sensor signal receiving unit 801 determines whether or not the second reference position mark 921 has been detected based on the detection signal from the second marking sensor 831 (S1007). If the second reference position mark 921 is not detected (S1007: No), the detection process is continued until the second reference position mark 921 is detected.

On the other hand, when the sensor signal receiving unit 801 determines that the second reference position mark 921 has been detected (S1007: Yes), the motor rotation control unit 103 stops the ascending control (S1008).

Then, the distance calculation unit 803 uses the pulse value acquired by the pulse data acquisition unit 104 and the count value of the counter circuit to display the second reference position mark 921 from a position where the maintenance personnel can visually recognize the second marking sensor 831. Calculates the count value o corresponding to the second movement distance of the main rope 130 to the position where the second reference position mark 921 can be detected (S1009).

Then, the distance calculation unit 803 stores the count value o corresponding to the second movement distance in the distance information storage unit 802 as the second movement distance information (S1010).

By performing the above-mentioned control, the distance information storage unit 106 can store the second reference position information and the second movement distance information based on the second reference position mark 921.

Next, when the elevator control panel 800 detects an abnormality in the main rope 130, a processing procedure for moving the abnormality to a position where the maintenance personnel can refer to the abnormality will be described. FIG. 11 is a flowchart showing a processing procedure when a maintenance person moves the abnormality to a position where the abnormality can be referred to when an abnormality of the main rope 130 in the elevator control panel 800 is detected.

First, the motor rotation control unit 103 controls the hoisting machine 122 and starts the elevating control of the car 401 (S1101).

Next, the determination unit 811 determines the position where the abnormality of the main rope 130 occurs in the first marking sensor 131 based on the pulse data received by the sensor signal reception unit 801 and the detection signal received by the sensor signal reception unit 105. It is determined whether or not it is (S1102).

When the determination unit 811 determines that the position where the abnormality of the main rope 130 has occurred is determined by the first marking sensor 131 (S1102: Yes), the determination unit 811 performs the same control as in S603 to S907 of FIG. 6 of the first embodiment. Then, the rotation control of the motor 121 for moving the car 401 to a position where the maintenance staff can visually recognize the abnormality is performed (S1103 to S1107).

On the other hand, when the determination unit 811 determines that the position where the abnormality of the main rope 130 has not occurred in the first marking sensor 131 (S1102: No), the abnormality of the main rope 130 has occurred in the second marking sensor 831. It is determined whether or not it is a position (S1108). Then, when the determination unit 811 determines that the position where the abnormality of the main rope 130 has not occurred is determined by the second marking sensor 831 (S1108: No), the process is performed again from S1102.

On the other hand, when the determination unit 811 determines the position where the second marking sensor 831 has detected an abnormality (S1108: Yes), the motor rotation control unit 103 controls the stop of the car 401 (S1109).

Next, the determination unit 811 determines whether or not the counterweight 402 is above the intermediate position of the hoistway (S1110).

When the determination unit 811 determines that the counterweight 402 is above the intermediate position of the hoistway (S1110: No). A counter value indicating the current position of the car 401, a counter value stored as the second reference position information, and a counter value indicating the second reference position when the car 401 and the counterweight 402 are at the same height, Is calculated as the moving distance γ (S1111).

Then, the motor rotation control unit 103 controls the rotation of the motor 121 corresponding to the moving distance γ (S1112).

On the other hand, when the determination unit 811 determines that the counter weight 402 is equal to or lower than the intermediate position of the hoistway (S1110: Yes), the motor rotation control unit 103 determines the second movement distance information stored in the distance information storage unit 106. Rotation control corresponding to 1/2 of the count value o stored as is performed on the motor 121 (S1113).

The motor rotation control unit 103 controls the stop of the car 401 (S1114).

Then, the distance calculation unit 803 calculates the difference γ'between the count value indicated by the second reference position information and the count value of the counter circuit 108 after the stop control is performed in S1114 (S1115).

The motor rotation control unit 103 subtracts 1/2 of the count value o stored as the second movement distance information from the difference γ'between the current position of the car 401 and the second reference position. Rotation control corresponding to the count value ((γ'−o / 2) / 2) obtained by multiplying the value by 1/2 is performed on the motor 121 (S1116).

In the present embodiment, even if the roping is complicated and cannot be confirmed in the first embodiment, the movement control of the car 401 can be realized to a position where the maintenance staff 442 can confirm the abnormality. As a result, the work time of the maintenance staff 442 can be reduced and the work load can be reduced.

(Third Embodiment)
FIG. 12 is a block diagram showing a schematic configuration example of the elevator system 3 according to the third embodiment. As shown in FIG. 12, the elevator system 3 includes an elevator control panel 1200, a hoisting machine 122, a pulse generator 123, a first marking sensor 131, a second marking sensor 831, and a third marking sensor. It is equipped with 1231. The same reference numerals are assigned to the same configurations as those in the above-described embodiment, and the description thereof will be omitted.

The third marking sensor 1231 is provided on the car 401. In this embodiment, an example in which the third marking sensor 1231 is provided on the car 401 will be described, but the present invention does not limit the third marking sensor 1231 on the car 401, and is not limited to the car 401 or under the car 401. It suffices if it is provided at a position where it moves together with 401.

The elevator control panel 1200 is different from the elevator control panel 800 of the second embodiment in the sensor signal receiving unit 1201 and the control unit 1202. The control unit 1202 includes a determination unit 1211 whose determination process is different from that of the second embodiment. The specific control of the determination unit 1211 will be described later.

The sensor signal receiving unit 1201 receives the detection signal from the first marking sensor 131 provided near the hoisting machine 122, and receives the detection signal from the second marking sensor 831 provided on the counterweight 402. It receives and receives the detection signal from the third marking sensor 1231 provided on the car 401.

FIG. 13 is a diagram illustrating the positions of the marking sensors in the elevator system 3 of the third embodiment. The first marking sensor 131 and the second marking sensor 831 are the same as those in the second embodiment. Then, the third marking sensor 1231 detects the main rope 130 on the opposite side of the first marking sensor 131. From this, the extended portion of the main rope 130 can be detected in a wider range as compared with the second embodiment.

In the third embodiment, when the extension of the main rope 130 is detected based on the detection signal of the third marking sensor 1231, the movement distance for controlling the movement to a position visible to the maintenance staff. There is no need to store information or reference position information.

In addition to performing the same processing as in the second embodiment, the determination unit 1211 adds markings based on the detection signal from the third marking sensor 1231 and the pulse data acquired by the pulse data acquisition unit 104. The distance of the area where the marking is made or the distance of the area where the marking is not given is calculated, and it is determined whether or not the calculated distance is equal to or more than a predetermined threshold value (for example, L + α), and the main rope 130 is stretched. Determine if it is.

Next, when the elevator control panel 1200 detects an abnormality in the main rope 130, a processing procedure for moving the abnormality to a position where the maintenance personnel can refer to the abnormality will be described. FIG. 14 is a flowchart showing a processing procedure when a maintenance person moves the abnormality to a position where the abnormality can be referred to when an abnormality of the main rope 130 in the elevator control panel 1200 of the third embodiment is detected.

First, the motor rotation control unit 103 controls the hoisting machine 122 and starts the elevating control of the car 401 (S1401).

Next, the determination unit 1211 determines the position where the abnormality of the main rope 130 occurs in the first marking sensor 131 based on the pulse data received by the sensor signal reception unit 801 and the detection signal received by the sensor signal reception unit 105. It is determined whether or not it is (S1402).

When the determination unit 811 determines that the position where the abnormality of the main rope 130 has occurred is determined by the first marking sensor 131 (S1402: Yes), the determination unit 811 performs the same control as in S603 to S907 of FIG. 6 of the first embodiment. Then, the rotation of the motor 121 is controlled to move the car 401 to a position where the maintenance staff can see the position where the abnormality is detected by the first marking sensor 131 (S1403).

On the other hand, when the determination unit 811 determines that the position where the abnormality of the main rope 130 has not occurred is determined by the first marking sensor 131 (S1402: No), the pulse data received by the sensor signal reception unit 801 and the sensor signal reception Based on the detection signal received by the unit 105, the second marking sensor 831 determines whether or not the position is the position where the abnormality of the main rope 130 has occurred (S1404).

When the determination unit 811 determines that the position where the abnormality of the main rope 130 has occurred is determined by the second marking sensor 831 (S1404: Yes), the determination unit 811 performs the same control as in S1109 to S1116 of FIG. 11 of the second embodiment. Then, the rotation of the motor 121 is controlled to move the car 401 to a position where the maintenance staff can see the position where the abnormality is detected by the second marking sensor 831 (S1405).

On the other hand, when the determination unit 811 determines that the position where the abnormality of the main rope 130 has not occurred is determined by the second marking sensor 831 (S1404: No), the pulse data received by the sensor signal reception unit 801 and the sensor signal reception Based on the detection signal received by the unit 105, the third marking sensor 1231 determines whether or not the position is the position where the abnormality of the main rope 130 has occurred (S1406).

When the determination unit 811 determines that the position where the abnormality of the main rope 130 has occurred is determined by the third marking sensor 1231 (S1406: Yes), the motor rotation control unit 103 controls the stop of the motor 121 (S1407). As a result, the maintenance staff on the car 401 can confirm the location where the abnormality has occurred in the main rope 130.

On the other hand, when the determination unit 811 determines that the position where the abnormality of the main rope 130 has not occurred is determined by the third marking sensor 1231 (S1406: No), the process is performed again from S1402. By performing this process in all areas where the car 401 can move up and down, an abnormality in the main rope 130 can be detected.

In the present embodiment, an example of performing stop control when the third marking sensor 1231 determines that the position where an abnormality has occurred in the main rope 130 has been described. However, according to the third marking sensor 1231, The control of the motor 121 shall be different. For example, when the third marking sensor 1231 is provided under the car 401, the motor rotation control unit 103 controls the rotation of the motor 121 so that the car 401 is lowered by 1/2 of the height. Do. In this way, the motor rotation control unit 103 may rotate the motor 121 to a position where the maintenance personnel on the car 401 can visually recognize the abnormality of the main rope 130.

In the present embodiment, as in the second embodiment, even with complicated roping, the movement control of the car 401 can be realized to a position where the maintenance staff 442 can confirm the abnormality. As a result, the work time of the maintenance staff 442 can be reduced and the work load can be reduced.

(Fourth Embodiment)
In the above-described embodiment, it is necessary to store the travel distance information in advance. On the other hand, in the fourth embodiment, the movement distance information is received from the remote monitoring center 1550.

FIG. 15 is a block diagram showing a schematic configuration example of the elevator system 4 according to the fourth embodiment. As shown in FIG. 15, the elevator system 5 includes an elevator control panel 1500, a hoisting machine 122, a pulse generator 123, a first marking sensor 131, a second marking sensor 831 and a third marking sensor. It is equipped with 1231. The same reference numerals are assigned to the same configurations as those in the above-described embodiment, and the description thereof will be omitted.

The elevator control panel 1500 is different from the elevator control panel 1200 of the third embodiment in that the communication unit 1501 is provided and the processing of the control unit 1502 is different.

The remote monitoring center 1550 includes a property data storage unit 1551, a moving distance calculation unit 1552, and a communication unit 1553.

The property data storage unit 1551 stores various data in the elevator system 4 for each property.

The moving distance calculation unit 1552 is used by the maintenance staff to visually check the data such as the overhead height, the type of the hoisting machine 122, various sheave systems, and the shape of the counterweight 402 stored in the property data storage unit 1551. The required travel distance is calculated for each marking sensor.

The communication unit 1553 transmits the moving distance information indicating the moving distance calculated for each marking sensor to the elevator control panel 1500.

The communication unit 1501 of the elevator control panel 1500 receives the movement distance information for each marking sensor from the remote monitoring center 1550.

The control unit 1502 stores the received movement distance information for each marking sensor in the distance information storage unit 802. Subsequent controls will be described in the same manner as in the above-described embodiment.

In the present embodiment, the movement control of the car 401 can be realized to a position where the maintenance staff 442 can confirm the abnormality without calculating the moving distance and storing it in the distance information storage unit 802. As a result, the work time of the maintenance staff 442 can be reduced and the work load can be reduced.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1, 2, 3, 4, 5 ... Elevator system, 100, 800, 1200, 1500 ... Elevator control panel, 102, 804, 1202, 1502 ... Control unit, 103 ... Motor rotation control unit, 104 ... Pulse data acquisition unit, 105, 801, 1201 ... Sensor signal receiving unit, 106, 802 ... Distance information storage unit, 107, 803 ... Distance calculation unit, 108 ... Counter circuit, 111, 811, 1211 ... Judgment unit, 121 ... Motor, 122 ... Winding Machine, 123 ... pulse generator, 130 ... main rope, 131 ... first marking sensor, 402 ... counter weight, 831 ... second marking sensor, 1231 ... third marking sensor, 1501 ... communication unit, 1550 ... remote monitoring Center, 1551 ... Property data storage unit, 1552 ... Travel distance calculation unit, 1553 ... Communication unit

Claims (5)

An acquisition unit that acquires the position information of the rope based on the number of revolutions of the motor for hoisting the rope by the elevator hoisting machine.
A receiving unit that receives a detection signal from the first detecting unit that detects the marking given to the rope, and a receiving unit.
A determination unit that determines an abnormality of the rope based on a detection signal from the first detection unit, and a determination unit.
The position when the maintenance staff on the elevator car can refer to the reference position mark from the position information when the first detection unit detects the reference position mark indicating the reference position given to the rope. A storage unit that stores the moving distance information for moving the rope and the reference position information indicating the position information when the maintenance staff on the elevator car can refer to the reference position mark up to the information.
When the determination unit determines that the rope is abnormal, the moving distance information, the reference position information, and the position information when the rope is determined to be abnormal are used on the car. A rotation control unit that allows the maintenance personnel to control the rotation of the motor to a position where the abnormality of the rope can be visually recognized.
Rope abnormality diagnosis system equipped with. In addition to the detection signal from the first detection unit provided near the hoisting machine, the receiving unit has a second detection signal from a second detection unit provided on the balancing weight connected to the rope. Received,
The determination unit determines the abnormality of the rope based on the detection signal from the second detection unit, and determines the abnormality of the rope.
The storage unit further obtains the second reference position mark from the position information when the second detection unit detects the second reference position mark indicating the second reference position given to the rope. The maintenance staff on the elevator car can refer to the position information when the maintenance staff on the elevator car can refer to the second movement distance information for moving the rope and the second reference position mark. The second reference position information indicating the position information when it can be referred to is stored.
When the rotation control unit determines that the rope is abnormal based on the detection signal from the second detection unit, the second movement distance information, the second reference position information, and the rope Based on the position information at the time when the abnormality is determined, the maintenance worker on the car rotates the motor to a position where the abnormality of the rope can be visually recognized.
The rope abnormality diagnosis system according to claim 1. In addition to the detection signal from the first detection unit provided near the hoisting machine, the receiving unit receives a third detection signal from a third detection unit provided on or under the car. Receive and
The determination unit determines the abnormality of the rope based on the detection signal from the third detection unit, and determines the abnormality of the rope.
When the rotation control unit determines that the rope is abnormal based on the detection signal from the third detection unit, the maintenance personnel on the car will be in a position where the rope abnormality can be visually recognized. To control the motor,
The rope abnormality diagnosis system according to claim 1 or 2. It is a rope abnormality judgment method executed in the elevator system.
The elevator system uses the reference position mark as the elevator car based on the position information when the first detection unit detects the reference position mark given to the rope wound by the elevator hoisting machine. Reference position indicating the movement distance information for moving the rope to the position information when the above maintenance personnel can refer to it, and the position information when the maintenance personnel on the elevator car can refer to the reference position mark. Equipped with a storage unit that stores information and
The position information of the rope is acquired based on the rotation speed of the motor for hoisting the rope by the hoisting machine.
A detection signal is received from the first detection unit that detects the marking given to the rope, and
The abnormality of the rope is determined based on the detection signal from the first detection unit, and the abnormality is determined.
When it is determined that the rope is abnormal, the maintenance staff on the car is based on the moving distance information, the reference position information, and the position information when the rope is determined to be abnormal. Rotation control of the motor to a position where the abnormality of the rope can be visually recognized.
Rope abnormality diagnosis method. From the position information when the first detection unit detects the reference position mark indicating the reference position given to the rope wound by the elevator hoisting machine, the computer puts the reference position mark on the elevator car. The movement distance information for moving the rope to the position information when the maintenance staff can refer to it, and the reference position information indicating the position information when the maintenance staff on the elevator car can refer to the reference position mark. Equipped with a storage unit that stores,
An acquisition step of acquiring the position information of the rope based on the rotation speed of the motor for winding the rope by the hoisting machine, and
A receiving step of receiving a detection signal from the first detection unit that detects the marking given to the rope, and
A determination step for determining an abnormality of the rope based on a detection signal from the first detection unit, and
When the rope is determined to be abnormal by the determination step, the moving distance information, the reference position information, and the position information when the rope is determined to be abnormal are used on the car. A rotation control step in which the maintenance personnel controls the rotation of the motor to a position where the abnormality of the rope can be visually recognized.
A program for causing the computer to execute.

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