JP2002362847A - Rope inspection device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a nearest floor capable of discriminating an abnormal point from a car on a monitor relatively to a discrimination vertical position of the elevator car when detecting something abnormal in a wire rope. SOLUTION: A control panel 30 calculates the position of the elevator car in determining the abnormality of the wire rope 24 from a rope tester 32 based on an encoder 34 by a command from a maintenance device 40 and calculates the discrimination vertical position capable of discriminating the abnormal position of the wire rope 24 from the car based on the position of the elevator car 22. The control panel calculates the nearest floor from the discrimination vertical position based on the positions of the respective stopping floors prestored in ROM, calculates a corrected distance to the nearest floor, and outputs them to the maintenance device 40. The maintenance device 40 inputting them displays the results on the monitor 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator rope inspection apparatus, and more particularly, to an elevator rope inspection apparatus for inspecting an abnormality of a rope that hoists an elevator car.

[0002]

2. Description of the Related Art Conventionally, as an elevator rope inspection device having a rope tester for detecting an abnormality of a wire rope that raises an elevator car, an elevator car elevation position when an abnormality is detected by a rope tester and a rope tester are installed. It has been proposed to calculate an ascending / descending position of an elevator car at which an abnormal portion of a rope can be visually recognized from the elevator car based on the position and display the calculation result on a monitor. In this elevator rope inspection device, the operator can move the elevator car to an abnormal portion of the rope by operating the elevator car while watching the display on the monitor, and can actually check the broken state of the rope.

[0003]

However, usually,
The indication on the monitor is the distance from the lowest floor of the elevator car, and depending on the operator, as a result of repeating trial and error without knowing how far the elevator car can go up and down, it takes a long time to check the rope breakage status. May require.

[0004] The elevator rope inspection device of the present invention comprises:
An object of the present invention is to provide a better guide that allows an elevator car to be quickly operated up to an abnormal point of a rope. Another object of the elevator rope inspection device of the present invention is to perform a rope inspection operation more efficiently.

[0005]

Means for Solving the Problems and Actions and Effects Thereof The elevator rope inspection device of the present invention employs the following means in order to at least partially achieve the above object.

[0006] The elevator rope inspection device of the present invention comprises:
State detecting means for detecting a state of a rope which raises and lowers the elevator car; elevating position detecting means for detecting an elevating position of the elevator car; and detecting the elevating position when an abnormal state of the rope is detected by the state detecting means. Based on the elevation position of the elevator car detected by the means and the installation position where the state detection means is installed, the confirmation elevation of the elevator car that can confirm the abnormal position of the rope from the elevator car is calculated. An elevator rope inspection device having position calculating means, wherein the elevator car is located at a predetermined position of each stop floor of the elevator, and is located at a position nearest to the confirmed elevator position calculated by the confirmed elevator position calculating means. A nearest floor calculating means for calculating the floor; and a display means for displaying the calculated nearest floor. The gist of the door.

In the elevator rope inspection apparatus according to the present invention, the nearest floor calculating means includes an elevator car capable of confirming an abnormal portion of the rope from the elevator car based on a preset position of each stop floor of the elevator. The nearest floor for the confirmed ascending / descending position is calculated, and the display means displays the calculated nearest floor. Thereby, the worker can drive the elevator car to the abnormal point of the rope with the nearest floor displayed on the display means as a guide, so that the elevator car can be quickly moved to the abnormal point of the rope, and the inspection efficiency is further improved. be able to.

In the elevator rope inspection device according to the present invention, the elevator rope inspection device further includes a correction distance calculation unit that calculates a correction distance from the nearest floor calculated by the nearest floor calculation unit to the confirmed ascending / descending position. It may be a means for displaying the correction distance calculated by the correction distance calculating means together with the nearest floor. This makes it possible to reach the abnormal location of the rope more quickly by using the nearest floor and the correction distance displayed on the display means as a guide. Work efficiency can be further improved.

[0009]

Next, embodiments of the present invention will be described with reference to examples. FIG. 1 is a configuration diagram schematically showing the configuration of an elevator including a rope inspection device according to one embodiment of the present invention. This elevator comprises an elevator car 22 and a counterweight 2 connected to the other end of a wire rope 24 connected at one end to the elevator car 22 to balance the weight of the elevator car 22 as shown.
6 and the elevator car 2 by winding up the wire rope 24
2 and a control panel 30 for controlling the hoisting machine 28. Although not shown, the control panel 30 is configured as a microprocessor centering on a CPU, and includes a ROM storing a processing program, a RAM temporarily storing data, an input / output port, and a communication port. . The control panel 30 includes a hoist 2
The input port is provided with a rotation amount signal from an encoder 34 attached to the hoisting machine 8 for detecting the rotation amount of the hoist 28 and a rope state signal from a rope tester 32 installed at the upper part of the hoistway in the figure and detecting the state of the wire rope 24. , And a control signal for controlling the operation of the hoisting machine 28 is output from the control panel 30 via an output port. The detection of the rope state by the rope tester 32 is performed, for example, by passing a magnetic flux through the wire rope 24 and measuring the magnitude of the leakage magnetic flux.

As a system configuration of the rope inspection device of the embodiment, the rope tester 32 and the encoder 34 described above are used.
And a control panel 30 for performing an inspection process on the wire rope 24 based on detections from the rope tester 32 and the encoder 34, and instructing the control panel 30 to inspect the wire rope 24 and displaying the inspection result from the control panel 30 And a possible maintenance device 40. The maintenance device 40 is configured as a microprocessor mainly including a CPU, and includes a ROM that stores a processing program, a RAM that temporarily stores data, and a communication port. The maintenance device 40 is configured to be detachable from the control panel 30, and connected to the control panel 30 via a communication port while being connected to the control panel 30.
And various kinds of information concerning rope inspection can be exchanged.

The operation of the rope inspection device of the embodiment configured as described above will be described. FIG. 2 shows the C of the maintenance device 40.
9 is a flowchart illustrating an example of a process performed by a PU. This process is executed when an instruction to inspect the wire rope 24 is input by an operation of an elevator maintenance person or the like.

When the processing of FIG. 2 is executed, the maintenance device 40
The CPU first communicates with the control panel 30 to output a signal to the control panel 30 to instruct the control panel 30 to check for an abnormality of the wire rope 24 (step S100). Thereafter, the inspection result from the control panel 30 is input. Wait (step S10).
2). As a result, the control panel 30 that has received the inspection command,
The inspection process of the wire rope 24 is started. Here, the description of the routine of FIG.
The inspection process at 0 will be described. The inspection process in the control panel 30 is executed by the process illustrated in FIG. FIG.
5 is a flowchart showing an example of a process executed by the CPU of the control panel 30.

When the processing shown in FIG. 3 is executed, the CPU of the control panel 30 first controls the operation of the hoisting machine 28 and raises and lowers the elevator car 22 with the rope tester 32.
Then, the state of the wire rope 24 detected is input (step S200), and a process of determining whether the wire rope 24 is normal is performed (step S202).
In this process, for example, when the state of the wire rope 24 is determined by measuring the leakage magnetic flux, the leakage magnetic flux increases according to the degree of damage to the wire rope 24. Is a process for determining that an error has occurred when appears. The determination of the abnormality is performed, for example, by dividing a lift line for raising and lowering the elevator car 22 between the lowermost floor and the uppermost floor into a plurality of zones every 0.3 m, and for each of the zones. Usually, the elevator car 22 is often suspended by a plurality of wire ropes 24. In this case, each of the ropes (rope No.
Each time), the state is detected, and the abnormality is determined.

When it is determined that the wire rope 24 is abnormal, the rotation amount signal detected by the encoder 34 at this time is input (step S204), and the elevator car 22 at the time of abnormality based on the rotation amount signal is input. Is calculated (step S206), and based on the calculated position of the elevator car 22 and the installation position of the rope tester 32 at the time of the abnormality, it is possible to confirm the abnormal position of the wire rope 24 from the car of the elevator car 22. A process of calculating the confirmed elevation position of the car 22 is performed (step S20).
8). FIG. 4 is an explanatory diagram for explaining how to calculate the confirmed elevation position of the elevator car 22. Now, FIG.
As shown in FIG.
It is assumed that an abnormality is determined at point A of 4. At this time, assuming that the position of the elevator car 22 based on the detection by the encoder 34 at the time of the abnormality determination is a value Ha and the installation position of the rope tester 32 is a value Hb, the confirmed elevation position H of the elevator car 22 is as shown in FIG. Can be calculated by the following equation. The position Ha of the elevator car 22, the installation position Hb of the rope tester 32, and the confirmation elevating position H at the time of detecting the abnormality of the wire rope 24 were set with the lowest floor of the elevator as a reference position.

H = (Ha + Hb) / 2 (1)

When the rope tester 32 is installed in the machine room, for example, in the hoist 28, the installation position Hb of the rope tester 32 needs to be set according to the curvature of the hoist 28. For example, as shown in FIG. 5, when the elevator car 22 is located on the top floor hn (the value hn is a height based on the lowest floor), a point (point B) at which the wire rope 24 can be visually recognized is a hoist. When the elevator car 22 is moved to the rope tester 32 installed in the elevator car 28, the movement amount h of the elevator car 22 moved with the movement is obtained in advance by an experiment or the like, and the movement amount h is calculated based on the position hn of the top floor and the elevator car 22. Can be set as a value obtained by adding the height l of Of course, it may be obtained by direct calculation based on the curvature of the hoisting machine 28.

After the confirmation elevation position H of the elevator car 22 is calculated in this manner, the confirmation elevation position H is then determined based on the confirmation elevation position H and the position of each stop floor of the elevator.
Of the nearest floor and the distance from this nearest floor to the confirmation ascent / descent position H are performed (step S208).
As shown in FIG. 4, this process is performed in advance by the RO of the control panel 30.
M (h1, h2.h)
3, h4,... Hn) and the confirmation elevating position H, and the stop floor closest to the confirmation elevating position H is set as the nearest floor. Then, the correction distance from the nearest floor to the confirmation elevating position H is, as shown in FIG.
When the position of the nearest floor is h4, it can be calculated as a value (H-h4).

If the nearest floor or the corrected distance is calculated in step S210, or if it is determined in step S202 that there is no abnormality in the wire rope 24, each zone of the elevator line from the lowest floor to the highest floor of the elevator car 22 is determined. It is determined whether all the inspections have been completed (step S212). If the inspection has not been completed, the process returns to step S200, and the above processing is repeated. On the other hand, if it is determined that the inspection has been completed, the above inspection result is output to the maintenance device 40 via the communication port (step S214), and this routine ends. The output inspection results include, for example, the presence or absence of an abnormality in the wire rope 24, the confirmed elevating position H, the correction distance from the nearest floor and the nearest floor to the confirmed elevating position H, the rope of the wire rope 24 determined to be abnormal. No. and so on.

Returning to the routine of FIG. 2, step S10
If it is determined in step 2 that the inspection result has been input from the control panel 30, a process of displaying the inspection result on the monitor 42 is performed (step S104), and this routine ends. FIG. 6 shows an example of the display on the monitor 42. Thereby, the elevator maintenance person can easily reach the abnormal point of the wire rope 24 by raising and lowering the elevator car 22 with reference to the nearest floor and the correction distance,
The degree of abnormality of the wire rope 24 can be actually confirmed from the car.

According to the rope inspection device of the embodiment described above, the monitor 42 of the maintenance device 40
Of the elevator car 22 for confirming the abnormal position of the elevator car 22 and the corrected distance from the nearest floor to the confirmed ascending / descending position H are displayed. The elevator can be operated using the floor and the corrected distance as a guide, and the abnormal location of the wire rope 24 can be quickly reached. As a result, the efficiency of the inspection work of the wire rope 24 can be further improved.

In the rope inspection device of the embodiment, the monitor 42
Although the nearest floor and the correction distance are displayed on the monitor 42, it is also preferable to display only the nearest floor on the monitor 42.
Also in this case, the nearest floor at the confirmed elevation position of the elevator car 22 can be known, and it can be used as an approximate standard of the abnormal location of the rope.

In the rope inspection device of the embodiment, both ends of the wire rope 24 are balanced with the elevator car 22 by the weight 2.
6 and the hoist 28 between them.
Although applied to the case of so-called one-to-one roping via a deflecting car, as shown in FIG. 7, a so-called two-to-one roping elevator using elevator cars 22 and counterweights 26 with lifting wheels 23 and 27 respectively is shown. It can also be applied. In this case, as shown in FIG. 7, the monitor 42 may display whether the abnormal location of the wire rope 24 is on the X side, the Y side, or the Z side together with the nearest floor and distance. In this way, the inspection work of the wire rope 24 by the two-to-one roping can be performed more easily.

The embodiments of the present invention have been described with reference to the embodiments. However, the present invention is not limited to these embodiments, and various embodiments may be made without departing from the gist of the present invention. Of course, it can be carried out.

[Brief description of the drawings]

FIG. 1 is a configuration diagram schematically showing the configuration of an elevator including a rope inspection device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an example of a process performed by a maintenance device of the rope inspection device according to the embodiment.

FIG. 3 is a flowchart illustrating an example of a process executed by a control panel 30 of the rope inspection device according to the embodiment.

FIG. 4 is an explanatory diagram for explaining a process of calculating a confirmation elevating position at which an abnormal portion of a wire rope can be confirmed.

FIG. 5 is a diagram for explaining a method of calculating a confirmed elevating position when the rope tester 32 is in a machine room.

FIG. 6 is a diagram showing a display example of a wire rope inspection result on a monitor 42;

FIG. 7 is a view showing another embodiment of the elevator.

[Explanation of symbols]

22 elevator car, 23 dropper, 24 wire rope, 26 counterweight, 27 dropper, 28 hoist, 30 control panel, 32 rope tester, 34
Encoder, 40 maintenance device, 42 monitor.

Claims (2)

[Claims] 1. A state detecting means for detecting a state of a rope which raises and lowers an elevator car, an elevating position detecting means for detecting an elevating position of the elevator car, and when an abnormal state of a rope is detected by the state detecting means. A lift position of the elevator car which is capable of confirming an abnormal position of the rope from the elevator car based on the lift position of the elevator car detected by the lift position detecting means and the installation position where the state detecting means is installed. The elevator rope inspection device having a confirmed elevating position calculating means for calculating the position of each stop floor of the elevator that is set in advance, based on the confirmed elevating position calculated by the confirmed elevating position calculating means An element comprising: a nearest floor calculating means for calculating a nearest floor; and a display means for displaying the calculated nearest floor. Over other rope inspection equipment. 2. The elevator rope inspection device according to claim 1, further comprising: a correction distance calculation unit configured to calculate a correction distance from the nearest floor calculated by the nearest floor calculation unit to the confirmed ascending / descending position. The elevator rope inspection device is a display means for displaying the correction distance calculated by the correction distance calculation means together with the nearest floor.