JP6958579B2 - Elevator rope diagnostic system and diagnostic method - Google Patents

Description

The present invention relates to a diagnostic system and a diagnostic method for elevator ropes.

Conventionally, for example, an elevator rope diagnostic system calculates a waveform consisting of a time axis and a magnetic flux axis based on a magnetic flux detection unit that detects the magnetic flux of a magnetized elevator rope and the magnetic flux detected by the magnetic flux detection unit. (For example, Patent Document 1). Then, for example, when the magnetic flux detection unit detects the leakage magnetic flux from the rope, the magnetic flux leaks from the broken portion of the rope, so that the presence or absence of the broken rope is determined based on the magnitude of the leaked magnetic flux. ing.

By the way, since the waveform showing the magnetic flux is composed of the time axis and the magnetic flux axis, it is a difficult task to accurately specify the disconnection position of the rope even if it is determined that the rope is disconnected. For example, by specifying the time when the elevator car is located at a predetermined landing, even if the rope disconnection position can be specified to some extent (for example, the range corresponding to the distance between adjacent floors), there. Furthermore, it is a difficult task to accurately identify the disconnection position of the rope.

JP-A-2009-249117

Therefore, an object of the present invention is to provide a diagnostic system and a diagnostic method for an elevator rope, which facilitates the work of specifying the position of the rope corresponding to an arbitrary position of the waveform showing the magnetic flux.

The elevator rope diagnostic system includes a magnetic flux detection unit that detects the magnetic flux of the magnetized elevator rope, a displacement detection unit that detects the displacement amount of the rope with respect to the magnetic flux detection unit, and a magnetic flux detected by the magnetic flux detection unit. A waveform calculation unit that calculates a waveform consisting of a rope distance axis and a magnetic flux axis based on the displacement amount detected by the displacement detection unit, a car position input unit that inputs car position information, and the car position. An axis information conversion unit that converts the rope distance axis into a car position axis based on the information input to the input unit is provided.

Further, in the elevator rope diagnostic system, the car position input unit is a start position input unit in which information on the car position at the time of starting the diagnosis is input, and information on the car position at the end of the diagnosis. The diagnostic system includes at least two of an end position input unit in which is input and a displacement amount input unit in which information on the displacement amount of the car at the time of diagnosis is input. Based on the information compared between the displacement amount comparison unit that compares the displacement amount of the car based on the information input to and the displacement amount of the rope based on the detection of the displacement detection unit, and the information that the displacement amount comparison unit compares, the rope. It includes an axis information calculation unit that calculates information on the car position axis with respect to the distance axis, and the axis information conversion unit uses the rope distance axis as the car position axis based on the information calculated by the axis information calculation unit. It may be configured to be converted.

Further, the method of diagnosing the rope for an elevator is to detect the magnetic flux of the rope by shifting the magnetized rope for the elevator in the rope length direction with respect to the magnetic flux detecting unit for detecting the magnetic flux, and to detect the magnetic flux. Detecting the amount of displacement of the rope with respect to the detection unit, calculating the waveform consisting of the rope distance axis and the magnetic flux axis based on the detected magnetic flux and the detected amount of magnetic flux, and information on the car position are input. This includes converting the rope distance axis into a car position axis based on the input car position information.

FIG. 1 is a schematic view showing a state in which the elevator rope diagnostic system according to the embodiment diagnoses the rope. FIG. 2 is a control block diagram of the elevator. FIG. 3 is a perspective view of the diagnostic tool according to the embodiment of FIG. FIG. 4 is a front view of the diagnostic tool according to the embodiment. FIG. 5 is a control block diagram of the diagnostic system according to the embodiment. FIG. 6 is a control flow diagram of the diagnostic system. FIG. 7 is a diagram showing the relationship between time and magnetic flux. FIG. 8 is a diagram showing the relationship between time and the amount of displacement of the rope with respect to the magnetic flux detection unit. FIG. 9 is a diagram showing the relationship between the rope distance and the magnetic flux (measured value). FIG. 10 is a diagram showing the relationship between the rope distance and the magnetic flux (calculated value). FIG. 11 is a conceptual diagram for converting the rope distance axis into the car position axis. FIG. 12 is a conceptual diagram for converting the rope distance axis into the car position axis. FIG. 13 is a conceptual diagram for converting the rope distance axis into the car position axis. FIG. 14 is a diagram showing the relationship between the car position and the magnetic flux. FIG. 15 is a control block diagram of the diagnostic system according to another embodiment. FIG. 16 is a conceptual diagram of the diagnostic system according to the same embodiment, in which the rope distance axis is converted into the car position axis. FIG. 17 is a conceptual diagram for converting a rope distance axis into a car position axis in a diagnostic system according to still another embodiment. FIG. 18 is a conceptual diagram for converting a rope distance axis into a car position axis in a diagnostic system according to still another embodiment.

Hereinafter, an embodiment of the elevator rope diagnostic system and diagnostic method will be described with reference to FIGS. 1 to 14. In each drawing, the dimensional ratio of the drawings and the actual dimensional ratio do not always match, and the dimensional ratios between the drawings do not necessarily match.

As shown in FIG. 1, the diagnostic system (hereinafter, also simply referred to as “diagnostic system”) 1 for the elevator rope 11 according to the present embodiment is used for diagnosing the presence or absence of disconnection of the rope 11. Here, the configuration of the elevator 10 will be described prior to explaining each configuration of the diagnostic system 1.

As shown in FIGS. 1 and 2, the elevator 10 includes a car 10a for a user to ride on and a counterweight 10b connected to the car 10a by a rope 11. Further, the elevator 10 includes a hoisting machine 10d having a sheave 10c around which the rope 11 is wound, and an elevator control unit 12 for controlling each part such as the hoisting machine 10d.

The elevator 10 according to the present embodiment has a configuration in which the hoisting machine 10d is arranged inside the machine room X1, but is not limited to such a configuration. For example, the elevator 10 may be configured such that the hoisting machine 10d is arranged inside the hoistway X2.

The elevator 10 has a movement information input unit 10e for inputting information on the movement of the car 10a to a user or a worker, a car position detection unit 10f for detecting that the car 10a is located at each landing X3, and a movement of the car 10a. It is provided with a car movement amount detecting unit 10 g for detecting the amount. Further, the elevator 10 includes an elevator output unit 10h that outputs information processed by the elevator control unit 12.

The configuration of the movement information input unit 10e is not particularly limited, but the movement information input unit 10e is, for example, an operation button operated by the user (an operation button arranged inside the car 10a, an operation arranged in each landing X3). It may be a button) or a manual operation tool (for example, a touch panel, a mobile terminal) operated by an operator. The manual operation tool can input, for example, the moving speed of the car 10a, the moving direction, the moving distance, and the stop position of the car 10a.

The elevator output unit 10h outputs, for example, the current car position (for example, an absolute value such as "10,000 mm"). The elevator 10 according to the present embodiment is based on, for example, the car position when the car 10a stops at the landing X3 on the lowest floor. That is, the car position is set with the car position as 0 mm when the car 10a stops at the landing X3 on the lowest floor. The standard of the car position is not particularly limited.

The configuration of the elevator output unit 10h is not particularly limited, but the elevator output unit 10h may be, for example, a device for displaying information (for example, a monitor), or, for example, a device for outputting a signal to the outside. good. The mobile information input unit 10e and the elevator output unit 10h may be integrated as, for example, a mobile terminal.

The configuration of the car position detection unit 10f is not particularly limited, but for example, the car position detection unit 10f may be various sensors (for example, photoelectric sensor, proximity sensor, etc.) arranged at each landing X3. The configuration of the car movement amount detection unit 10g is not particularly limited, but for example, the car movement amount detection unit 10g may be various sensors (for example, an encoder) that detect the rotation amount of the sheave 10c.

The elevator control unit 12 includes an acquisition unit 12a for acquiring each information and a storage unit 12b for storing various information. Further, the elevator control unit 12 includes a car position calculation unit 12c that calculates the position of the car 10a, and a hoisting control unit 12d that controls the operation of the hoisting machine 10d.

The car position calculation unit 12c calculates the position of the car 10a based on the information detected by the car position detection unit 10f and the car movement amount detection unit 10g. For example, the car position calculation unit 12c can calculate the movement amount of the car 10a and the movement speed of the car 10a based on the position of the car 10a.

Therefore, in the elevator 10, for example, when the car position is input to the movement information input unit 10e as "10,000 mm", the elevator control unit 12 moves the car 10a and the landings X3 to 10 on the lowest floor. Stop the car 10a at a height of 000 mm. That is, the elevator control unit 12 moves the car 10a to the car position based on the car position input to the movement information input unit 10e, and stops the car 10a at the car position.

Next, the configuration of the diagnostic system 1 according to the present embodiment will be described.

The diagnostic system 1 includes a diagnostic tool 2 for diagnosing the rope 11. The position where the diagnostic tool 2 is arranged is not particularly limited. For example, in FIG. 1, the diagnostic tool 2 is arranged inside the machine room X1. The diagnostic tool 2 may be fixed to the machine room X1 (for example, the floor), or may be held by an operator, for example.

As shown in FIGS. 3 and 4, the diagnostic tool 2 includes a magnetic flux detection unit 3 that detects the magnetic flux of the rope 11, a displacement detection unit 4 that detects the amount of displacement of the rope 11 with respect to the magnetic flux detection unit 3, and a magnetic flux detection unit. 3 and a diagnostic tool main body 2a for connecting the displacement detection unit 4 are provided. In the present embodiment, the magnetic flux detection unit 3 and the displacement detection unit 4 are fixed to each other, but for example, the magnetic flux detection unit 3 and the displacement detection unit 4 are separated from each other. It may be configured as.

The displacement detection unit 4 includes a rotation unit 4a whose outer circumference is in contact with the rope 11, a rotation detection unit 4b that detects the amount of rotation of the rotation unit 4a, and a rotation unit 4a and a diagnostic tool main body so that the rotation unit 4a can rotate. It is provided with a connecting portion 4c for connecting to 2a. The configuration of the rotation detection unit 4b is not particularly limited, but for example, the rotation detection unit 4b may be various sensors (for example, an encoder) that detect the rotation amount of the rotation unit 4a.

The connecting portion 4c is rotatably connected to the diagnostic tool main body 2a, and the displacement detecting portion 4 includes an elastic portion 4d (shown only in FIG. 4) that applies a force to the connecting portion 4c. ing. As a result, the elastic portion 4d is elastically deformed, so that the rotating portion 4a is in contact with the rope 11 under pressure. The outer peripheral portion of the rotating portion 4a may be formed in a concave shape in order to hook and position the rope 11.

The configuration of the displacement detection unit 4 is not particularly limited as long as it can detect the amount of displacement of the reference position (for example, the end portion, the diagnosis start position) of the rope 11 with respect to the magnetic flux detection unit 3. For example, the rotation unit 4a, the rotation detection unit 4b, the connection unit 4c, and the elastic unit 4d may have different configurations from the configuration according to the present embodiment, or may not be provided.

The magnetic flux detecting unit 3 includes magnet units 3a and 3a for magnetizing the rope 11 and a measuring unit 3b for measuring the magnetic flux of the rope 11. The configuration of the magnet portion 3a is not particularly limited, but for example, the magnet portion 3a may be a permanent magnet or an electromagnet. The configuration of the measuring unit 3b is not particularly limited, but for example, the measuring unit 3b may be various magnetic sensors (Hall elements, coils) that convert the magnitude of the magnetic flux into the magnitude of the voltage (current).

Further, the magnetic flux detection unit 3 is provided with a guide unit 3c at the tip thereof to guide the rope 11. The guide portion 3c is formed in a concave shape for hooking and positioning the rope 11. The configuration of the magnetic flux detection unit 3 is not particularly limited as long as it can detect the magnetic flux of the magnetized rope 11. For example, the magnet unit 3a, the measurement unit 3b, and the guide unit 3c may or may not have different configurations with respect to the configuration according to the present embodiment.

By the way, the diagnosis using magnetic flux includes, for example, a leakage magnetic flux method and a total magnetic flux method. Therefore, the magnetic flux detection unit 3 may be configured to detect the magnetic flux leaking from the rope 11, for example, or may be configured to detect the magnetic flux passing through the inside of the rope 11, for example, the magnetic flux detecting unit 3. It may be configured to detect both magnetic fluxes.

The leakage magnetic flux method detects the magnetic flux leaking from the magnetized rope 11 and diagnoses the deterioration of the rope 11. For example, when the surface of the rope 11 has irregularities due to the disconnection of the wire, the magnetic flux leaks from the irregularities. Therefore, the rope 11 is diagnosed by detecting the leakage magnetic flux (for example, finding the disconnection). )can do.

On the other hand, the total magnetic flux method detects the magnetic flux passing through the inside of the magnetized rope 11 and diagnoses the deterioration of the rope 11. For example, when the effective cross-sectional area (cross-sectional area through which magnetic flux can pass) changes due to partial thinning of the rope 11, corrosion, wear, etc., the magnetic flux passing through the inside of the portion changes. Therefore, the rope 11 can be diagnosed (for example, finding thinning, corrosion, wear, and disconnection) by detecting the magnetic flux.

As shown in FIG. 5, the diagnostic system 1 includes a diagnostic information input unit 1a for inputting information for diagnosis and a car position input unit 1b for inputting car position information. Further, the diagnostic system 1 includes a processing unit 5 for processing information and an output unit 1c for outputting the information processed by the processing unit 5.

The car position input unit 1b includes a start position input unit 1d in which information on the car position at the time of starting the diagnosis is input, and an end position input unit 1e in which the information on the car position at the time of ending the diagnosis is input. .. For example, when the diagnosis is started at the position where the car 10a is stopped at the landing X3 on the lowest floor and the diagnosis is completed at the position of 10,000 mm in height from the car position, the start position input unit. "0 mm" is input to 1d, and "10,000 mm" is input to the end position input unit 1e.

For example, information related to the diagnosis (for example, an instruction to start the diagnosis, an instruction to end the diagnosis, etc.) is input to the diagnosis information input unit 1a. The configuration of each input unit 1a, 1b, 1d, 1e is not particularly limited, but each input unit 1a, 1b, 1d, 1e may be, for example, a mouse, a keyboard, various switches, or a touch panel.

The configuration of the output unit 1c is not particularly limited, but the output unit 1c may be, for example, a device for displaying information (for example, a monitor), or may be, for example, a device for outputting a signal to the outside. The input units 1a, 1b, 1d, 1e and the output unit 1c may be integrated as, for example, a mobile terminal.

The processing unit 5 includes an acquisition unit 5a that acquires information from each unit 1a, 1b, 1d, 1e, 3, and 4, and a storage unit 5b that stores various types of information. Further, the processing unit 5 calculates a waveform including a rope distance axis and a magnetic flux axis based on the magnetic flux detected by the magnetic flux detecting unit 3 and the displacement amount of the rope 11 detected by the displacement detecting unit 4 c. And a disconnection determination unit 5d for determining the presence or absence of disconnection of the rope 11 based on the waveform calculated by the waveform calculation unit 5c.

Then, the processing unit 5 is a displacement amount comparison unit that compares the displacement amount of the car 10a based on the information input to the car position input unit 1b and the displacement amount of the rope 11 based on the detection of the displacement detection unit 4. It is equipped with 5e. Further, the processing unit 5 is based on the axis information calculation unit 5f that calculates the information of the car position axis with respect to the rope distance axis based on the information compared by the displacement amount comparison unit 5e, and the information calculated by the axis information calculation unit 5f. It also includes an axis information conversion unit 5g that converts the rope distance axis into a car position axis.

The configuration of the waveform calculation unit 5c is not particularly limited. For example, the waveform calculation unit 5c may calculate the waveform without correcting the measured value of the magnetic flux detected by the magnetic flux detection unit 3, and the magnetic flux detection unit 3 may remove disturbance (noise). The waveform may be calculated by correcting from the measured value of the magnetic flux detected by.

When calculating the waveform, the waveform calculation unit 5c calculates the total displacement amount of the rope 11 (see FIGS. 1 and 3 to 4) with respect to the magnetic flux detection unit 3 based on the displacement amount detected by the displacement detection unit 4. doing. Further, the displacement amount comparison unit 5e calculates the total displacement amount of the car 10a (see FIG. 1) based on the information input to the car position input unit 1b. For example, the displacement amount comparison unit 5e calculates the total displacement amount of the car 10a based on the car position input to the start position input unit 1d and the car position input to the end position input unit 1e.

Then, the displacement amount comparison unit 5e compares the calculated total displacement amount of the car 10a with the total displacement amount of the rope 11 calculated by the waveform calculation unit 5c. For example, when the displacement detection unit 4 slips or idles with respect to the rope 11, an error occurs between the total displacement amount of the car 10a and the total displacement amount of the rope 11.

The ratio of the amount of movement of the car 10a to the amount of displacement of the rope 11 changes depending on the roping method (for example, 1: 1 roping, 2: 1 roping). Therefore, the displacement amount comparison unit 5e compares the calculated total displacement amount of the car 10a with the total displacement amount of the rope 11 calculated by the waveform calculation unit 5c in consideration of the ratio.

Then, the axis information calculation unit 5f calculates the information of the car position axis with respect to the rope distance axis based on the error of the displacement amount compared by the displacement amount comparison unit 5e. For example, the axis information calculation unit 5f calculates the scale ratio of the car position axis to the rope distance axis so that the total displacement amount of the car 10a on the car position axis corresponds to the total displacement amount of the rope 11 on the rope distance axis. Then, the axis information conversion unit 5g converts the rope distance axis into the car position axis with respect to the waveform calculated by the waveform calculation unit 5c based on the information calculated by the axis information calculation unit 5f.

The configuration of the diagnostic system 1 according to the present embodiment is as described above. Next, the diagnostic method according to the present embodiment will be described with reference mainly to FIGS. 5 to 14 (also in FIGS. 1 to 4). reference). A case where the magnetic flux detection unit 3 detects the leakage magnetic flux from the rope 11 will be described.

Since the car 10a is moved from the state where the magnetic flux detecting unit 3 and the displacement detecting unit 4 are in contact with the rope 11 (car moving step S1), the rope 11 is displaced with respect to the magnetic flux detecting unit 3. At this time, the magnetic flux detection unit 3 detects the magnetic flux of the magnetized rope 11 (magnetic flux detection step S2), and the displacement detection unit 4 detects the amount of displacement of the rope 11 with respect to the magnetic flux detection unit 3 (the magnetic flux detection unit 3). Displacement detection step S3).

Then, as shown in FIG. 7, the magnetic flux detected by the magnetic flux detection unit 3 can be represented by a waveform including a time axis and a magnetic flux axis. Further, as shown in FIG. 8, the displacement amount detected by the displacement detection unit 4 can be represented by a waveform including a time axis and a displacement amount axis of the rope 11 with respect to the magnetic flux detection unit 3.

By the way, as shown in FIG. 8, since the waveform including the time axis and the displacement amount axis of the rope 11 is not a straight line, the moving speed of the car 10a is not the same from the start of the diagnosis to the end of the diagnosis, but changes. .. Therefore, based on the magnetic flux detected by the magnetic flux detection unit 3 and the displacement amount detected by the displacement detection unit 4, the waveform calculation unit 5c calculates a waveform including a rope distance axis and a magnetic flux axis, as shown in FIG. (Waveform calculation step S4).

For example, since the measured value of the magnetic flux may include disturbance (noise), in the present embodiment, as shown in FIG. 10, the waveform calculation unit 5c has the magnetic flux in order to remove the disturbance. The waveform is calculated by correcting the measured value of the magnetic flux detected by the detection unit 3. For example, the waveform calculation unit 5c converts the waveform shown in FIG. 9 into a function by Fourier series expansion, removes a component of a period that becomes a disturbance from the function, and calculates the waveform shown in FIG. 10 from the removed function. It may be configured to do.

Then, the disconnection determination unit 5d determines whether or not the rope 11 is disconnected based on the waveform calculated by the waveform calculation unit 5c (disconnection determination step S5). For example, the disconnection determination unit 5d determines that the rope 11 is disconnected at a position where the magnitude of the magnetic flux exceeds the threshold value (broken line in FIG. 10 (also in FIG. 14)). The threshold value may be input by the diagnostic information input unit 1a or may be stored in advance in the storage unit 5b of the processing unit 5.

After that, the car position information at the start of the diagnosis is input to the start position input unit 1d, and the car position information at the end of the diagnosis is input to the end position input unit 1e (car position input step S6). Since the information on the current car position is output to the elevator output unit 10h, the elevator output unit 10h can confirm the car position at the start of the diagnosis and at the end of the diagnosis. Based on this, the respective car positions are input to the respective input units 1d and 1e.

For example, as shown in FIG. 11, the diagnosis is started at the position where the car 10a stops at the landing X3 on the second floor (4.2 m), and the car 10a stops at the landing X3 on the seventh floor (25.2 m). When the diagnosis is completed, "4.2 m" is input to the start position input unit 1d, and "25.2 m" is input to the end position input unit 1e.

In addition, in FIG. 11 (the same applies to FIGS. 12 to 13 and 16 to 18), the information described as "input" surrounded by a square frame is the information input to the car position input unit 1b. Shown. Further, in reality, the car position is set in mm units instead of m units.

Then, the displacement amount comparison unit 5e compares the displacement amount of the car 10a with the displacement amount of the rope 11 with respect to the magnetic flux detection unit 3 (displacement amount comparison step S7). Specifically, the displacement amount comparison unit 5e calculates the total displacement amount of the car 10a based on the information input to the start position input unit 1d and the end position input unit 1e, and the calculated total displacement amount of the car 10a. Is compared with the total displacement amount of the rope 11 with respect to the magnetic flux detection unit 3.

In FIG. 11, since the car position at the start of the diagnosis is "4.2 m" and the car position at the end of the diagnosis is "25.2 m", the displacement amount of the car 10a is "21.0 m (21.0 m). = 25.2m-4.2m) ”. On the other hand, the displacement amount of the rope 11 is "20.0 m". Therefore, when comparing the displacement amount of the car 10a and the displacement amount of the rope 11, the displacement amount of the car 10a is larger than the displacement amount of the rope 11 and is "1.0 m (21.0 m-20.0 m)". There is an error.

Then, the axis information calculation unit 5f calculates the information of the car position axis with respect to the rope distance axis based on the error compared by the displacement amount comparison unit 5e (axis information calculation step S8). Specifically, the axis information calculation unit 5f calculates the information on the car position axis so that the total displacement amount of the car 10a on the car position axis corresponds to the total displacement amount of the rope 11 on the rope distance axis.

For example, as shown in FIG. 11, the waveform is calculated so that the waveform whose rope distance axis is "20.0 m" becomes the waveform whose car position axis is "21.0 m". That is, the scale ratio of the car position axis to the rope distance axis is calculated to be "21.0 m / 20.0 m". As a result, even if an error occurs due to the comparison of the displacement amount comparison unit 5e, the information on the car position axis of the waveform can be appropriately corrected.

As shown in FIG. 12, even when the displacement amount of the car 10a is smaller than the displacement amount of the rope 11, the axis information calculation unit 5f indicates that the total displacement amount of the car 10a on the car position axis is the rope distance axis. The information of the car position axis is calculated so as to correspond to the total displacement amount of the rope 11 in. For example, in FIG. 12, the waveform with the rope distance axis of "20.0 m" is calculated so as to be the waveform with the car position axis of "19.0 m". That is, the scale ratio of the car position axis to the rope distance axis is calculated to be "19.0 m / 20.0 m".

Further, as shown in FIG. 13, even when the displacement amount of the car 10a is the same as the displacement amount of the rope 11, the axis information calculation unit 5f determines that the total displacement amount of the car 10a on the car position axis is the rope 11 on the rope distance axis. The information of the car position axis is calculated so as to correspond to the total displacement amount of. For example, in FIG. 13, the waveform with the rope distance axis of "20.0 m" is calculated so as to be the waveform with the car position axis of "20.0 m". That is, the scale ratio of the car position axis to the rope distance axis is calculated to be "1 (= 20.0 m / 20.0 m)".

Then, the axis information conversion unit 5g converts the rope distance axis into the car position axis with respect to the waveform calculated by the waveform calculation unit 5c based on the information of the car position axis calculated by the axis information calculation unit 5f ( Axis information conversion step S9). As a result, as shown in FIG. 14, a waveform including a car position axis and a magnetic flux axis is calculated. Therefore, the position of the rope 11 determined to be broken is output as the car position information (“9.9 m” in FIG. 14). That is, the position of the rope 11 corresponding to an arbitrary position of the waveform can be specified based on the car position.

Therefore, when the car position is input to the movement information input unit 10e as "9.9 m", the elevator control unit 12 moves the car 10a to the position and stops it. At this time, the position of the rope 11 detected by the magnetic flux detection unit 3 becomes the position of the rope 11 determined to be broken. Therefore, by confirming the position of the rope 11 (or its peripheral position), the disconnection position of the rope 11 can be confirmed. In this way, the work of specifying the position of the rope 11 corresponding to the arbitrary position of the waveform indicating the magnetic flux becomes easy.

The method of diagnosing the rope 11 is not limited to such a method. For example, the order of the disconnection determination step S5 is not particularly limited as long as it is after the waveform calculation step S4. Further, for example, the order of the car position input step S6 is not particularly limited as long as it is before the displacement amount comparison step S7.

Further, the waveforms according to FIGS. 7 to 14 may or may not be output (for example, displayed) by the output unit 1c, and may or may not be output by, for example, the diagnostic information input unit 1a. The output and non-output of each waveform of the above may be individually selectable. Further, for example, the waveform may not be output, and only the numerical value of the car position (for example, "9.9 m") corresponding to the position of the rope 11 determined to be abnormal may be output.

Based on the above, in the method for diagnosing the elevator rope 11 according to the present embodiment, the magnetized elevator rope 11 is displaced in the rope length direction with respect to the magnetic flux detection unit 3 for detecting the magnetic flux. Based on the detection of the magnetic flux of the above, the detection of the displacement amount of the rope 11 with respect to the magnetic flux detection unit 3, and the detected magnetic flux and the detected displacement amount, a waveform composed of a rope distance axis and a magnetic flux axis is generated. It includes calculation, input of car position information, and conversion of the rope distance axis into a car position axis based on the input car position information.

Further, the diagnostic system 1 of the elevator rope 11 according to the present embodiment detects the magnetic flux detection unit 3 that detects the magnetic flux of the magnetized elevator rope 11 and the displacement amount of the rope 11 with respect to the magnetic flux detection unit 3. The displacement detection unit 4, the waveform calculation unit 5c that calculates the waveform including the rope distance axis and the magnetic flux axis based on the magnetic flux detected by the magnetic flux detection unit 3 and the displacement amount detected by the displacement detection unit 4. It includes a car position input unit 1b for inputting car position information, and an axis information conversion unit 5g for converting the rope distance axis into a car position axis based on the information input to the car position input unit 1b. ..

According to such a diagnostic method and the diagnostic system 1, the magnetic flux of the rope 11 is detected by the displacement of the rope 11 with respect to the magnetic flux detection unit 3. Further, since the displacement amount of the rope 11 with respect to the magnetic flux detection unit 3 is detected, a waveform including the rope distance axis and the magnetic flux axis is calculated based on the detected magnetic flux and the detected displacement amount.

Further, the rope distance axis is converted into the car position axis based on the input car position information. As a result, since one axis of the waveform serves as the car position axis, the position of the rope 11 corresponding to an arbitrary position of the waveform can be specified based on the car position. Therefore, the work of specifying the position of the rope 11 corresponding to an arbitrary position of the waveform showing the magnetic flux becomes easy.

Further, in the diagnostic system 1 of the elevator rope 11, the car position input unit 1b has a start position input unit 1d into which information on the car position at the time of starting the diagnosis is input and the car position input unit 1d at the time of ending the diagnosis. At least two of the end position input unit 1e in which the car position information is input and the displacement amount input unit in which the displacement amount information of the car 10a at the time of diagnosis is input (in the present embodiment, the displacement amount input unit). The diagnostic system 1 includes a start position input unit 1d and an end position input unit 1e), and the diagnostic system 1 is based on the displacement amount of the car 10a based on the information input to the car position input unit 1b and the detection of the displacement detection unit 4. A displacement amount comparison unit 5e that compares the displacement amount of the rope 11, and an axis information calculation unit 5f that calculates information on the car position axis with respect to the rope distance axis based on the information compared by the displacement amount comparison unit 5e. , And the axis information conversion unit 5g converts the rope distance axis into a car position axis based on the information calculated by the axis information calculation unit 5f.

According to such a configuration, at least two of the car position at the start of the diagnosis, the car position at the end of the diagnosis, and the displacement amount of the car 10a at the time of the diagnosis are input. Then, the displacement amount of the car 10a based on the input information and the displacement amount of the rope 11 based on the displacement detection unit 4 are compared. After that, the information of the car position axis with respect to the rope distance axis is calculated based on the compared information, so even if there is an error between the two displacement amounts, the information of the car position axis of the waveform should be corrected appropriately. Can be done.

The diagnostic system 1 and the diagnostic method of the elevator rope 11 are not limited to the configuration of the above-described embodiment, and are not limited to the above-mentioned action and effect. In addition, it goes without saying that the diagnostic system 1 and the diagnostic method of the elevator rope 11 can be variously modified without departing from the gist of the present invention. For example, it goes without saying that one or a plurality of configurations and methods according to the following various modification examples may be arbitrarily selected and adopted for the configurations and methods according to the above-described embodiment.

(1) In the diagnostic system 1 and the diagnostic method according to the above embodiment, the displacement detection unit 4 includes a rotation unit 4a whose outer circumference is in contact with the rope 11 and a rotation detection unit 4b that detects the amount of rotation of the rotation unit 4a. It is a composition that is. However, the diagnostic system 1 and the diagnostic method are not limited to such a configuration.

For example, as shown in FIG. 15, the displacement detection unit may be configured to include a car movement amount detection unit of 10 g. That is, the displacement detection unit may be configured to detect the displacement amount of the rope 11 with respect to the magnetic flux detection unit 3 by detecting the movement amount of the car 10a. The processing unit 5 according to FIG. 15 acquires the information detected by the car movement amount detecting unit 10g via the elevator control unit 12.

Further, for example, the processing unit 5 or the elevator control unit 12 may be configured to include a displacement detection unit. Specifically, the displacement detection unit acquires information on the moving speed of the car 10a and calculates the amount of movement of the car 10a based on the information on the moving speed to calculate the amount of displacement of the rope 11 with respect to the magnetic flux detecting unit 3. May be detected (calculated).

(2) Further, in the diagnostic system 1 and the diagnostic method according to the above embodiment, the displacement amount comparison unit 5e compares the total displacement amount of the car 10a with the total displacement amount of the rope 11 with respect to the magnetic flux detection unit 3. It is a configuration. However, the diagnostic system 1 and the diagnostic method are not limited to such a configuration. For example, as shown in FIGS. 15 and 16, the displacement amount comparison unit 5e may have a configuration in which the interfloor displacement amount of the car 10a is compared with the interfloor displacement amount of the rope 11 with respect to the magnetic flux detection unit 3. Details of such a configuration will be described below.

As shown in FIG. 15, the car position input unit 1b includes a car position detection unit 10f and a detection position input unit 1g for inputting information on the position of the car 10a when the car position detection unit 10f detects. .. The processing unit 5 acquires the information detected by the car position detection unit 10f via the elevator control unit 12.

Then, the processing unit 5 associates the magnetic flux detected by the magnetic flux detecting unit 3 with the information detected by the car position detecting unit 10f. In FIG. 16, the position where the car position detecting unit 10f detects the position of the car 10a is indicated by a long-dotted line arrow. Then, the information on the position of the car 10a when the car position detection unit 10f detects is input to the detection position input unit 1g. For example, in FIG. 16, information on the position of the car 10a when the car position detection unit 10f arranged on the 2nd to 7th floors detects the car is input.

Then, the displacement amount comparison unit 5e compares the inter-floor displacement amount of the car 10a with the inter-floor displacement amount of the rope 11 with respect to the magnetic flux detection unit 3, and the axis information calculation unit 5f compares the inter-floor displacement amount of the car 10a with the inter-floor displacement amount of the car 10a on the car position axis. The scale ratio of the car position axis to the rope distance axis is calculated so that the displacement amount corresponds to the inter-floor displacement amount of the rope 11 on the rope distance axis. As a result, the relationship of the magnetic flux with respect to the car position can be acquired with higher accuracy.

(3) Further, in the diagnostic system 1 and the diagnostic method according to the above embodiment, the car position input unit 1b includes a start position input unit 1d and an end position input unit 1e. However, the diagnostic system 1 and the diagnostic method are not limited to such a configuration. For example, the car position input unit 1b includes at least one of the start position input unit 1d and the end position input unit 1e, and a displacement amount input unit 1f into which information on the displacement amount of the car 10a at the time of diagnosis is input. It may be configured to be present.

That is, it is preferable that the car position input unit 1b includes at least two of a start position input unit 1d, an end position input unit 1e, and a displacement amount input unit 1f. According to such a configuration, two pieces of information, information on the car position at the start of the diagnosis, information on the car position at the end of the diagnosis, and information on the displacement amount of the car 10a at the time of diagnosis. By inputting, the remaining one piece of information can be calculated.

For example, the car position input unit 1b may include a start position input unit 1d, an end position input unit 1e, and a displacement amount input unit 1f. Further, for example, the car position input unit 1b may be configured to include a start position input unit 1d and a displacement amount input unit 1f, or, for example, an end position input unit 1e and a displacement amount input unit 1f. It may be configured to be equipped.

(4) Further, in the diagnostic system 1 and the diagnostic method according to the above embodiment, the car position input unit 1b includes a start position input unit 1d and an end position input unit 1e. However, the diagnostic system 1 and the diagnostic method are not limited to such a configuration, although such a configuration is preferable.

For example, the car position input unit 1b may be configured to include only one of the start position input unit 1d and the end position input unit 1e. For example, in a configuration in which only the start position input unit 1d is provided, as shown in FIG. 17, the information input to the start position input unit 1d (“4.2 m” in FIG. 17) and the displacement detection The car position (24.2 m (= 4.2 m + 20.0 m)) at the end of the diagnosis based on the displacement amount of the rope 11 (“20.0 m” in FIG. 17) based on the detection of the part 4. Is calculated.

(5) Further, in the diagnostic system 1 and the diagnostic method according to the above embodiment, the axis information calculation unit 5f calculates the scale ratio of the car position axis with respect to the rope distance axis. However, the diagnostic system 1 and the diagnostic method are not limited to such a configuration. For example, as shown in FIG. 18, the axis information calculation unit 5f calculates a part of the information of the rope distance axis so as to correspond to the car position axis, assuming that the scale ratio of the car position axis to the rope distance axis is 1. , May be the configuration.

In FIG. 18, for example, when the displacement detection unit 4 is idling at the initial stage of diagnosis, the axis information calculation unit 5f excludes the error portion (the portion where the rope distance is 0 m to 1 m) at the initial stage of diagnosis. The information of the car position axis is calculated as described above. The axis information calculation unit 5f may calculate the information of the car position axis so as to exclude the error part at the end of the diagnosis, for example, and remove the error part at the beginning of the diagnosis and the end of the diagnosis, respectively. , The information of the car position axis may be calculated.

(6) Further, in the diagnosis system 1 and the diagnosis method according to the above embodiment, the disconnection determination unit 5d determines whether or not the rope 11 is disconnected based on the waveform calculated by the waveform calculation unit 5c. .. However, the diagnostic system 1 and the diagnostic method are not limited to such a configuration. For example, the operator may determine whether or not the rope 11 is broken based on the waveform calculated by the waveform calculation unit 5c. That is, the worker may determine whether or not the rope 11 is broken by looking at the waveform displayed on the output unit 1c.

1 ... Diagnostic system, 1a ... Diagnostic information input unit, 1b ... Car position input unit, 1c ... Output unit, 1d ... Start position input unit, 1e ... End position input unit, 1f ... Displacement amount input unit, 1g ... Detection position input Unit, 2 ... Diagnostic tool, 2a ... Diagnostic tool body, 3 ... Magnetic flux detection unit, 3a ... Magnet unit, 3b ... Measurement unit, 3c ... Guide unit, 4 ... Displacement detection unit, 4a ... Rotation unit, 4b ... Rotation detection unit 4, 4c ... Connection unit, 4d ... Elastic unit, 5 ... Processing unit, 5a ... Acquisition unit, 5b ... Storage unit, 5c ... Waveform calculation unit, 5d ... Disconnection determination unit, 5e ... Displacement amount comparison unit, 5f ... Axis information calculation Unit, 5g ... Axis information conversion unit, 10 ... Elevator, 10a ... Basket, 10b ... Balance weight, 10c ... Tail wheel, 10d ... Hoisting machine, 10e ... Movement information input unit, 10f ... Car position detection unit, 10g ... Car movement amount detection unit, 10h ... Elevator output unit, 11 ... Rope, 12 ... Elevator control unit, 12a ... Acquisition unit, 12b ... Storage unit, 12c ... Car position calculation unit, 12d ... Hoisting control unit, X1 ... Machine room , X2 ... hoistway, X3 ... landing

Claims (5)

A magnetic flux detector that detects the magnetic flux of a magnetized elevator rope,
A displacement detection unit that detects the amount of displacement of the elevator rope with respect to the magnetic flux detection unit, and
A waveform calculation unit that calculates a waveform including a rope distance axis and a magnetic flux axis of the elevator rope based on the magnetic flux detected by the magnetic flux detection unit and the displacement amount detected by the displacement detection unit.
An acquisition unit that acquires car position information,
A diagnostic system for an elevator rope, comprising: an axis information conversion unit that converts a rope distance axis of the elevator rope into a car position axis based on the information of the car position acquired by the acquisition unit. The acquisition unit acquires at least one of the information on the car position when starting the diagnosis and the information on the car position when ending the diagnosis.
The diagnostic system for an elevator rope according to claim 1, wherein the axis information conversion unit converts the rope distance axis of the elevator rope into a car position axis based on the at least one information acquired by the acquisition unit. .. The acquisition unit, the information of the car position at the start of diagnosis, and information of the car position at the time of completion of diagnosis, the information of the amount of displacement of the car at the time of diagnosis, of the Get at least two pieces of information
The diagnostic system includes a displacement amount comparison unit that compares the displacement amount of the car based on the at least two pieces of information acquired by the acquisition unit with the displacement amount of the elevator rope based on the detection of the displacement detection unit, and the displacement. A shaft information calculation unit that calculates information on the car position axis with respect to the rope distance axis of the elevator rope based on the information compared by the quantity comparison unit is provided.
The diagnostic system for an elevator rope according to claim 1, wherein the axis information conversion unit converts the rope distance axis of the elevator rope into a car position axis based on the information calculated by the axis information calculation unit. A car position detecting unit for detecting that the car is located at the landing is provided.
The acquisition unit acquires the information detected by the car position detection unit and the information on the position of the car when the car position detection unit detects it.
The diagnostic system includes a displacement amount comparison unit that compares the displacement amount of the car based on the information acquired by the acquisition unit and the displacement amount of the elevator rope based on the detection of the displacement detection unit, and the displacement amount comparison unit. Is provided with an axis information calculation unit that calculates information on the car position axis with respect to the rope distance axis of the elevator rope based on the information compared with each other.
The diagnostic system for an elevator rope according to claim 1, wherein the axis information conversion unit converts the rope distance axis of the elevator rope into a car position axis based on the information calculated by the axis information calculation unit. Against the magnetic flux detector for detecting a magnetic flux by magnetizing rope for an elevator is displaced in the rope length direction, and detecting the magnetic flux of the elevator rope,
To detect the amount of displacement of the elevator rope with respect to the magnetic flux detection unit,
Based on the detected magnetic flux and the detected displacement amount, the waveform including the rope distance axis and the magnetic flux axis of the elevator rope can be calculated.
And Rukoto to acquire the information of the car position,
A method for diagnosing an elevator rope, which comprises converting a rope distance axis of the elevator rope into a car position axis based on the acquired information on the car position.

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