JP2020040764A - Degradation measurement device and degradation measurement method for elevator wire rope - Google Patents

Abstract

To provide a degradation measurement device and a degradation measurement method for an elevator wire rope, which can accurately measure the degradation state of the wire rope.SOLUTION: A degradation measurement device 10 for measuring the degradation of a wire rope 5 comprises: a guide body 11 of a half-split structure that is attached so as to pinch the wire rope 5; a support member 12 that rotatably supports the guide body 11; a camera 13 that is attached to the support member 12 to photograph the surface of the wire rope 5; and an image analysis device 14 that measures the degradation of the wire rope 5 on the basis of an image captured by the camera 13. An engaging part 15a having a shape corresponding to a helical uneven shape of the outer peripheral surface of the wire rope 5 is provided inside the guide body 11, and first and second markers 16a, 16b recognizable by the camera are provided to the outer surface of the guide body 11.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an elevator wire rope deterioration measuring device and a deterioration measuring method for measuring the degree of deterioration of a wire rope that drives an elevator.

  A wire rope for driving an elevator is configured by twisting a plurality of steel wires called element wires to form a strand, and twisting a plurality of the strands around a fiber core at a central portion. Therefore, a spiral uneven shape is formed on the outer peripheral surface of the wire rope in the axial direction.

  The wire rope may be broken if the number of strand breaks generated during one rotation of the strand (one pitch) exceeds a predetermined value. I try to check.

  Conventionally, as a method of checking the state of deterioration of a wire rope, after a worker gets into a car and moves to a position where the wire rope can be checked, the number of broken wires is visually checked by the worker at the position. The technique of confirming is widely known.

  Further, as another conventional technique, as described in Patent Literature 1, based on a video signal obtained by photographing an image of a wire rope over a predetermined elevating step and a car position signal obtained from an elevator control panel, a predetermined A wire that detects the number of wire breaks within a distance range and determines that rope replacement is necessary when the number of wire breaks exceeds a predetermined number within a predetermined distance range. There has been proposed an apparatus for inspecting a rope for broken wires.

JP 2009-12903 A

  However, in the former conventional technique of visually confirming a broken wire by an operator, since the broken wire is checked by visual inspection from only one direction of the rope, not only a great amount of time is required, Often they miss a cut and the rope to be replaced can be overlooked.

  On the other hand, in the latter conventional technique described in Patent Literature 1, wire breakage is measured from an image captured by a camera. Older elevators, etc. that cannot obtain an accurate car position signal because the range to check for wire rope breakage is indirectly determined from the distance obtained based on the elevator car position signal. When it is applied to, the deterioration degree of the wire rope cannot be measured accurately.

  The present invention has been made in view of such a situation of the related art, and an object of the present invention is to provide an elevator wire rope deterioration measuring device and a deterioration measuring method capable of accurately measuring the deterioration state of a wire rope. Is to do.

  In order to achieve the above object, a typical present invention is an elevator wire rope deterioration measuring device for measuring deterioration of a wire rope that raises and lowers a car of an elevator, such that the wire rope is pinched. A guide body having a half-split structure to be attached, a support member rotatably supporting the guide body, a camera attached to the support member for photographing the surface of the wire rope, and the wire from an image taken by the camera. An image analysis device for measuring the degree of deterioration of the rope, and an engagement portion having a shape corresponding to the spiral uneven shape of the outer peripheral surface of the wire rope is provided inside the guide body, and It is characterized in that a marker recognizable by the camera is provided on the outer surface of the guide body.

  ADVANTAGE OF THE INVENTION According to this invention, the deterioration state of a wire rope can be measured accurately. In addition, problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

It is a schematic structure figure showing the principal part of an elevator. It is explanatory drawing which expands and shows a part of external appearance of the wire rope used for the elevator of FIG. It is explanatory drawing which shows the use condition of the deterioration measuring device which concerns on embodiment. It is an external appearance perspective view of the guide body provided in the deterioration measuring device. It is a perspective view which shows the half part of a guide body. It is a perspective view which shows the connection part of the support member provided in the deterioration measuring device. FIG. 2 is a block diagram illustrating an image analysis device provided in the deterioration measurement device. 5 is a flowchart illustrating a processing operation of the image analysis device. It is a flowchart which shows the work procedure of the deterioration measuring method which concerns on embodiment.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a main part of an elevator to which the present invention is applied.

  The elevator 1 shown in FIG. 1 hangs a wire rope 5 on a sheave and a deflecting wheel 4 of a hoisting machine 3 installed in a machine room above a hoistway 2 and a car 6 on one end of the wire rope 5. By suspending the counterweights 7 on the other end side, respectively, and driving the hoisting machine 3 to wind up the wire rope 5, the car 6 and the counterweight 7 move up and down in the hoistway 2 in a fishing bottle manner. It is configured.

  FIG. 2 is an explanatory diagram showing a part of the appearance of the wire rope 5 in an enlarged manner. As shown in FIG. 2, in the wire rope 5, a plurality of strands 5 a are twisted to form a strand 5 b, and a plurality of strands 5 b are twisted around a central fiber core (not shown). It is configured. Here, the portion where the wire rope 5 is most deteriorated is hung on the sheave and the deflecting wheel 4 of the hoisting machine 3 when the car 6 accelerates or decelerates near the floor set on the reference floor (for example, the first floor). The wire break 5c is likely to be concentrated on the surface of the wire rope 5 at the location. For this reason, in the present embodiment, a mark such as a yellow mark is previously attached to the wire rope 5 at the portion where the wire break 5c occurs most frequently, and the wire rope 5 at the marked portion is inspected. Like that.

  The present invention automatically recognizes the number of wire breaks 5c generated within one pitch of the strand 5b from an image taken by a camera of a deterioration measuring device described later, thereby measuring the deterioration state of the wire rope 5. ing. Hereinafter, an apparatus for measuring deterioration of a wire rope for an elevator according to an embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 3 is an explanatory view showing a use state of the deterioration measuring device according to the embodiment, FIG. 4 is a perspective view of a guide provided in the deterioration measuring device, FIG. 5 is a perspective view showing a half portion of the guide, and FIG. It is a perspective view which shows the connection part of the support member provided in the deterioration measuring device.

  As shown in FIGS. 3 to 6, the deterioration measuring device 10 according to the embodiment includes a guide body 11 having a half-split structure that is attached so as to sandwich the wire rope 5, and a support member that rotatably supports the guide body 11. The apparatus includes a camera 12, a camera 13 attached to the support member 12, and an image analyzer 14 for measuring the degree of deterioration of the wire rope 5 from an image captured by the camera 13.

  The guide body 11 has a cylindrical rotating part 11a and large-diameter flange parts 11b projecting radially from both upper and lower ends of the rotating part 11a, and is formed in a bobbin shape as a whole. Here, the guide body 11 can be divided into two half guide bodies 11A, and an engagement hole 15 penetrating in the vertical direction (axial direction) is provided at the center of these half guide bodies 11A. I have. As shown in FIG. 5, an engaging portion 15 a having a shape corresponding to the spiral uneven shape of the outer peripheral surface of the wire rope 5 is formed in the engaging hole 15 of one half guide body 11 </ b> A, and the other. A similar engaging portion 15a is also formed in the engaging hole 15 of the half guide body 11A. Therefore, when the guide body 11 is moved along the axial direction of the wire rope 5, the guide body 11 moves around the wire rope 5 while moving in a range (one pitch) wound by one rotation of the strand 5 b. Is rotated once.

  In addition, one first marker 16a and a plurality of second markers 16b are formed on the outer peripheral surface of the upper flange portion 11b of the guide body 11 at predetermined intervals in the circumferential direction. The first marker 16a and the second marker 16b have different cutout shapes so that they can be easily identified from an image of a camera described later. Specifically, the first marker 16a is formed in the same long shape as the thickness of the flange portion 11b, whereas the second marker 16b is formed in the short shape having a thickness approximately half the thickness of the flange portion 11b. I have. However, the means for identifying the first marker 16a and the second marker 16b is not limited to the difference in shape, but may be different from each other in color, pattern, or the like. The same first marker 16a and second marker 16b are also formed on the lower flange 11b of the guide body 11, and even if the guide body 11 is attached to the wire rope 5 with the guide body 11 turned upside down. The first marker 16a and the second marker 16b are always located on the upper flange 11b.

  The support member 12 has a vertical support portion 12a extending in parallel with the wire rope 5 at a predetermined distance, and a horizontal support portion 12b extending from a substantially central position of the vertical support portion 12a toward the guide body 11. Of the portion 12a, a portion below the horizontal support portion 12b is a grip portion 12c. At the upper and lower ends of the vertical support portion 12a, anti-swing plates 17 are fixed, respectively. The vertical support portion 12a of the support member 12, the horizontal support portion 12b, and a pair of anti-sway plates 17 form an E-shape as a whole. Is constituted. Further, a semi-cylindrical contact portion 17a is formed on the tip end side of both swing prevention plates 17, and by pressing these contact portions 17a against the surface of the wire rope 5, the deterioration measuring device 10 is connected to the wire rope 5. 5 so that it can be stably supported without play.

  A connecting portion 18 that rotatably supports the guide body 11 is provided on the distal end side of the horizontal support portion 12b of the support member 12. As shown in FIG. 6, the connecting portion 18 includes a pair of half-cylindrical bodies 18A and 18b that can be divided into two, and a fastener (a bolt 19 and a wing nut 20) that connects the two half-cylindrical bodies 18A and 18b. The one semicylindrical body 18A is fixed to the tip of the horizontal support portion 12b. The rotating portion 11a of the guide body 11 is rotatably sandwiched between the two semi-cylindrical bodies 18A, 18b, and the upper and lower flanges 11b project radially outward from the two semi-cylindrical bodies 18A, 18b. The guide body 11 is prevented from falling off from the connecting portion 18.

  The camera 13 is attached to a portion of the vertical support portion 12a above the horizontal support portion 12b, and simultaneously shoots the surface of the wire rope 5 and the first and second markers 16a, 16b of the guide body 11 with the camera 13. It is possible. The image data captured by the camera 13 is taken into the image analysis device 14, and the image analysis device 14 measures the degree of deterioration of the wire rope 5 based on the image data. Although the camera 13 and the image analysis device 14 can be connected by wire or wireless communication, the camera 13 and the image analysis device 14 may be configured by the same device, for example, a smartphone with a camera function. .

  FIG. 7 is a block diagram of the image analysis device 14. The image analysis device 14 is composed of a computer, and includes a measurement unit 21 that measures the rotation amount of the guide body 11 and the number of wire breaks 5c of the wire rope 5, A monitor 22 for displaying a measurement result of the measurement unit 21.

  The measurement unit 21 has an input unit 23, a calculation unit 24, a storage unit 25, and an output unit 26. The input unit 23 inputs image data of the surface of the wire rope 5 taken by the camera 13 and image data of the outer surface of the guide body 11 taken by the camera 13 at the same time, and outputs these image data to the calculation unit 24. . The arithmetic unit 24 counts the number of wire breaks 5c occurring in one pitch of the strand 5b according to the program stored in the storage unit 25, the identification information of the wire break image, and the like. The output unit 26 outputs to the monitor 22 the calculation result of the number of wire breaks 5c processed by the calculation unit 24. The display control unit (not shown) of the monitor 22 displays the number of wire breaks 5c per pitch, a warning prompting the replacement of the wire rope 5, and the like on the screen of the monitor 22 according to a command from the output unit 26.

  FIG. 8 is a flowchart showing the processing operation of the image analysis device 14. As shown in FIG. 8, when acquiring the image data of the camera 13 from the input unit 23 (step S1), the calculation unit 24 measures the rotation amount of the guide body 11 based on the image data (step S2), and at the same time, The number of broken wires 5c is measured (step S3). Here, the guide body 11 makes one rotation while moving one pitch of the strand 5b, and the first and second markers 16a and 16b of the guide body 11 which rotate with the rotation are photographed by the camera 13, so that the image data is obtained. By recognizing the first marker 16a and the second marker 16b, the number of rotations of the guide body 11 can be measured. Moreover, among the plurality of first and second markers 16a and 16b, only one of the first markers 16a has a cutout shape different from that of the plurality of second markers 16b. By recognizing the passage, the rotation amount of the guide body 11 can be corrected for each rotation.

  The calculation unit 24 calculates the number (n) of wire breaks 5c occurring in one pitch of the strand 5b from the measured rotation amount of the guide body 11 and the counted number of wire breaks 5c (step S4). The calculation result is output to the monitor 22 via the output unit 26 (step S5), and the number of the wire breaks 5c is displayed on the monitor 22. Then, the calculation unit 24 determines whether the number (n) of the wire breaks 5c per pitch exceeds a predetermined number (N) (n ≧ N?) (Step S6), and If the number (n) is smaller than the predetermined number (N) (step S6 / No), the process ends. On the other hand, when the number (n) of the wire breaks 5c is equal to or greater than the predetermined number (N) (step S6 / Yes), the arithmetic unit 24 prompts the monitor 22 to replace the wire rope 5 via the output unit 26. A warning to that effect is displayed, and if necessary, an alarming command such as a buzzer is output, and then the process is terminated.

  Next, an operation procedure of the deterioration measuring method according to the embodiment will be described based on a flowchart shown in FIG. 9 with reference to FIGS.

  First, as shown in FIG. 1, the worker 100 gets on the car 6 and moves to a position where the wire rope 5 can be inspected. As described above, since the specific portion where the wire rope 5 is most deteriorated is marked in advance with a yellow mark or the like, the worker 100 moves to a position where the marked portion is reached, and then the deterioration according to the embodiment is performed. The following operation is performed using the measuring device 10.

  First, the guide body 11 is once divided into two half guide bodies 11A, and the guide body 11 is attached to the wire rope 5 so that the wire rope 5 is sandwiched between the two half guide bodies 11A (step S10). Thereby, the engaging portion 15 a formed in the engaging hole 15 of the guide body 11 is engaged with the spiral uneven shape on the outer peripheral surface of the wire rope 5.

  Next, the connecting portion 18 provided on the support member 12 is divided into two semi-cylindrical bodies 18A and 18b, and after inserting the rotating part 11a of the guide body 11 into the two semi-cylindrical bodies 18A and 18b. The two semi-cylindrical bodies 18A and 18b are joined and integrated using a bolt 19 and a wing nut 20. Thereby, the guide body 11 is rotatably connected to the connection portion 18 of the support member 12 (step S11).

  In this state, the attachment of the deterioration measuring device 10 to the wire rope 5 is completed, and the contact portions 17a of the swing prevention plates 17 provided at the upper and lower ends of the support member 12 come into contact with the surface of the wire rope 5, thereby causing deterioration. The measuring device 10 is attached to the wire rope 5 in a stable posture. Further, the camera 13 can simultaneously photograph the surface of the wire rope 5 located above the guide body 11 and the first and second markers 16a and 16b provided on the flange 11b on the upper side of the guide body 11. , Its position and angle are set.

  After the mounting of the deterioration measuring device 10 is completed in this way, the worker 100 starts the photographing of the camera 13 and the processing operation of the image analyzing device 14, and grasps the holding portion 12 c of the support member 12 to stop the deterioration measuring device 10. It moves downward (step S12). When the deterioration measuring device 10 is moved downward, the guide body 11 rotates around the wire rope 5 in accordance with the movement of the deterioration measuring device 10 due to the engagement of the wire rope 5 and the engaging portion 15a in the spiral uneven shape. While moving down.

  While the worker 100 is moving the deterioration measuring device 10 downward, the camera 13 moves the first and second markers 16 a and 16 b of the guide body 11 that rotates while descending, and the upstream side in the moving direction of the guide body 11. Is photographed simultaneously with the surface of the wire rope 5 located at the position (step S13). At this time, since the guide body 11 is engaged with the engaging portion 15a corresponding to the uneven shape of the surface of the wire rope 5, when the guide body 11 moves the wire rope 5 downward, the wire rope 5 The dirt including oil deposited on the surface of the guide body 11 is scraped off (removed) by the engaging portion 15a of the guide body 11. Thus, the surface of the wire rope 5 after passing through the guide body 11 is in a clean state free from oil stains, and the camera 13 can always photograph the surface of the wire rope 5 in a clean state.

  When the image data captured by the camera 13 is captured by the image analysis device 14, as described above, the arithmetic unit 24 of the image analysis device 14 determines the number of wire breaks 5c generated in the wire rope 5 from the image data. , And at the same time, the rotation amount of the guide body 11 is measured based on the movement of the first and second markers 16a and 16b provided on the guide body 11. As described above, by measuring the number of twists of the wire rope 5 in the range in which the deterioration measuring device 10 has moved, and measuring the number of wire breaks 5c generated in the range, the image analyzing device 14 The degree of deterioration is measured (step S14). Here, in the present embodiment, of the plurality of first and second markers 16a and 16b provided on the guide body 11, only one first marker 16a has a notched shape different from the plurality of second markers 16b. Therefore, by recognizing that the first marker 16a has passed through the image, the rotation amount of the guide body 11 can be corrected for each rotation.

  The image analyzer 14 outputs the measured degree of deterioration of the wire rope 5 to the monitor 22, and the operator 100 can recognize the degree of deterioration of the wire rope 5 from the display content displayed on the monitor 22. At this time, on the display screen of the monitor 22, the number n of the wire breaks 5c generated in one pitch of the strand 5b measured by the calculation unit 24 of the image analysis device 14 is displayed. Can be determined that if the number n exceeds the predetermined number N, the wire rope 5 needs to be replaced, and if the number n has not reached the predetermined number N, the wire rope 5 does not need to be replaced. .

  As described above, the elevator wire rope deterioration measuring device 10 according to the present embodiment rotatably supports the guide body 11 having a half-split structure attached to sandwich the wire rope 5. A guide provided with a support member, a camera attached to the support member for photographing the surface of the wire rope, and an image analyzer for measuring a degree of deterioration of the wire rope from an image taken by the camera; An engagement portion 15a having a shape corresponding to the spiral uneven shape of the outer peripheral surface of the wire rope 5 is provided inside the body 11, and first and second recognizable by a camera on the outer surface of the guide body 11. Since the markers 16 a and 16 b are provided, the wire rope 5 is obtained from the image of the surface of the wire rope 5 and the movement of the guide body 11 taken by the camera 13. The deteriorated state of the flop 5 can be measured easily and accurately.

  Further, in the deterioration measuring device 10 according to the present embodiment, since the guide body 11 is engaged with the engaging portion 15a corresponding to the uneven shape of the surface of the wire rope 5, the guide body 11 is in the axial direction of the wire rope 5. When moving along, the oil stains accumulated on the surface of the wire rope 5 can be removed by the guide body 11. Therefore, there is no need to manually remove oil stains before confirming the wire break 5c, and the inspection and cleaning of the wire rope 5 can be performed simultaneously.

  Further, in the deterioration measuring device 10 according to the present embodiment, the connecting portion 18 that rotatably supports the guide body 11 includes a pair of semicylindrical bodies 18A and 18b that can be divided into two, and these semicylindrical bodies 18A and 18b. And a semi-cylindrical body 18A is fixed to the support member 12, so that the connecting portion 18 between the guide body 11 and the support member 12 can be easily formed. Can be linked. Moreover, since the rotating portion 11a of the guide body 11 is rotatably sandwiched between the two semi-cylindrical bodies 18A and 18b, and the flanges 11b project radially outward from both upper and lower ends of the two semi-cylindrical bodies 18A and 18b. It is possible to reliably prevent the guide body 11 from falling off from the connection portion 18.

  In addition, in the deterioration measuring device 10 according to the present embodiment, the swing prevention plates 17 are provided at the upper and lower ends of the vertical support portion 12a of the support member 12, respectively. Since the deterioration measuring device 10 is supported by being pressed against the surface of the wire rope 5, it is possible to suppress the bending deformation of the wire rope 5 in a range where the camera 13 takes an image. It is effective that the anti-swing plate 17 is provided at the upper and lower ends of the vertical support portion 12a. However, it is sufficient that the anti-sway plate 17 is provided at least at the end (the upper end in the present embodiment) on which the camera 13 is mounted. .

  Further, according to the method for measuring the deterioration of the wire rope for an elevator according to the present embodiment, the deterioration state of the wire rope 5 can be easily and accurately measured by using the above-described deterioration measuring device 10, and the wire rope 5 Inspection and cleaning can be performed simultaneously.

  The above-described embodiments are merely examples for describing the present invention, and are not intended to limit the scope of the present invention only to those embodiments. Those skilled in the art can implement the present invention in various other modes without departing from the gist of the present invention.

  For example, in the above embodiment, after the worker 100 gets on the car 6 and moves to a position where the wire rope 5 can be inspected, the deterioration measuring device 10 is attached to the wire rope 5 to perform the inspection work. However, it is also possible to use the deterioration measuring device 10 in a machine room where the hoist 3 and the like are installed.

  Further, in the above embodiment, the case where the present invention is applied to an elevator in which a car and a counterweight are connected to both ends of a wire rope hung on a hoist has been described. The invention is also applicable to an elevator called a two-car elevator in which a car is connected to a sleeve.

REFERENCE SIGNS LIST 1 elevator 2 hoistway 3 hoist 4 hoisting machine 4 wire rope 5 a strand 5 b strand 5 c strand break 6 riding basket 7 counterweight 10 deterioration measuring device 11 guide body 11 a rotating section 11 a
11b Flange 11A Half guide body 12 Supporting member 12a Vertical support 12b Horizontal support 12c Grip 13 Camera 14 Image analyzer 15 Engagement hole 15a Engagement 16a First marker 16b Second marker 17 Shake prevention plate 17a Contact part 18 Connection part 18A, 18B Semi-cylindrical body 19 Bolt 20 Wing nut 21 Measurement unit 22 Monitor 23 Input unit 24 Operation unit 25 Storage unit 26 Output unit

Claims (8)

An elevator wire rope deterioration measuring device that measures the deterioration of a wire rope that raises and lowers an elevator car,
A guide body having a half-split structure attached so as to sandwich the wire rope,
A support member that rotatably supports the guide body,
A camera attached to the support member for photographing the surface of the wire rope,
An image analyzer that measures the degree of deterioration of the wire rope from an image captured by the camera,
With
An engagement portion having a shape corresponding to the spiral uneven shape of the outer peripheral surface of the wire rope is provided inside the guide body, and a marker recognizable by the camera is provided on the outer surface of the guide body. An elevator wire rope deterioration measuring device characterized by being used. The elevator wire rope deterioration measuring device according to claim 1,
The marker includes at least one first marker and a plurality of second markers arranged along a circumferential direction of the guide body, and the first marker and the second marker are distinguishable from each other. Deterioration measurement device for elevator wire rope. The elevator wire rope deterioration measuring device according to claim 1,
The guide body has a cylindrical rotating portion rotatably supported by a connection portion of the guide body, and large-diameter flange portions formed on both ends of the rotating portion, and a surface of the flange portion. An apparatus for measuring deterioration of a wire rope for an elevator, wherein the marker is formed on the wire rope. The elevator wire rope deterioration measuring device according to claim 3,
The connecting portion includes a pair of semi-cylindrical bodies that can be divided into two, and a fastener that connects the two semi-cylindrical bodies, and one of the semi-cylindrical bodies is fixed to the support member. A wire rope deterioration measuring device for elevators, characterized in that: The elevator wire rope deterioration measuring device according to claim 1,
The support member has a vertical support portion extending in parallel with the wire rope at a predetermined distance, and a horizontal support portion extending from the middle position of the vertical support portion toward the guide body,
The camera is attached to one of the vertical support sections divided into two sections with the horizontal support section as a boundary, and one of the other sections is gripped by an operator. Deterioration measuring device for wire rope for elevators, characterized in that it is a part. The elevator wire rope deterioration measuring device according to claim 5,
At least one of the upper and lower ends of the vertical support portion has an anti-sway portion extending in parallel with the horizontal support portion, at least at the end of the portion where the camera is mounted. An elevator wire rope deterioration measuring device characterized in that it can be brought into contact with the surface of an elevator. The elevator wire rope deterioration measuring device according to claim 1,
The image analysis device, based on the image of the wire rope captured by the camera and the movement of the marker, a measurement unit that measures the number of wire strand breaks of the wire rope during one rotation of the guide body, An elevator wire rope deterioration measuring device, comprising: a monitor for displaying a measurement result of a measuring unit. An elevator wire rope deterioration measuring method for measuring the deterioration of a wire rope that raises and lowers an elevator car,
A step of attaching a guide body provided with an engagement hole corresponding to a spiral uneven shape of the outer peripheral surface of the wire rope to the wire rope,
A step of rotatably connecting a support member to the guide body,
By manually operating the support member and moving the guide body in one direction of the wire rope, rotating the guide body in accordance with the movement of the support member,
By a camera attached to the support member, a step of simultaneously photographing the surface of the wire rope located on the downstream side in the moving direction and a marker provided on the outer surface of the guide body,
Measuring the degree of deterioration of the wire rope from an image taken by the camera,
A method for measuring deterioration of a wire rope for an elevator, comprising:

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