JP7296924B2 - Elevator inspection method and device - Google Patents

Description

TECHNICAL FIELD The present invention relates to inspection of mechanical equipment including elevators (elevators), and more particularly to technology for inspecting ropes involved in the movement thereof. This inspection includes inspecting the main ropes of the elevator for flaws to determine the degree of deterioration.

In mechanical equipment such as cranes, hoists, lifts, cable cars, and elevators, main ropes are generally used to move cages, loads, and the like. For example, steel wire ropes are used as main ropes for suspending elevator cars and counterweights. A wire rope is constructed by twisting a plurality of steel wires called a strand and further twisting them. In such a wire rope, the steel wire forming the wire rope breaks little by little due to fatigue and wear. The number of steel wire breaks increases over time. Therefore, the wire rope is periodically inspected for flaws, and when the number of breaks exceeds a reference value, the wire rope is judged to have reached the end of its life and is replaced.

Elevators generally include a car, counterweights, main ropes, rope sockets, thimble rods, support springs and nuts. A plurality of main ropes are provided for suspending the car and the counterweight. Rope sockets are attached to both ends of these main ropes and are also provided in plurality. The thimble rod is for fixing the rope socket. Springs support the main ropes via thimble rods. A nut is threaded onto the thimble rod to determine the amount of expansion and contraction of the spring.

Such fatigue and wear of a plurality of main ropes occurs due to friction and bending when passing through the sheave, and progresses in proportion to the load (rope tension) received at that time. Therefore, as a system for calculating the load applied to the main rope and the number of sheave passages and detecting the most deteriorated portion (position), the technique described in Patent Document 1 is known.

In Patent Document 1, "The number of bends of the main rope is accurately obtained from the number of times the main rope passes through the sheave at each position of each car, and the number of bends at each main rope position is accurately calculated, and the number of times of life due to bending is calculated. Elevator Main Rope Diagnosis Device for Accurately Estimating and Identifying Main Rope Deterioration Positions Considering Main Rope Wear Deterioration at Sheaves Due to Tension Ratio Generated by Mass Balance of Car Mass and Counterweight.

JP-A-2006-27888

However, in Patent Literature 1, the tension of the main rope is calculated by measuring the load change according to the load amount during the elevator running, but the tension of each of the multiple main ropes is not calculated. Here, deterioration of the main rope progresses from the rope with the highest tension. For this reason, to inspect deterioration of the main rope, it is necessary to consider its tension. On the other hand, Patent Document 1 has a problem that the tension of each rope is not taken into consideration.

In order to solve the above-mentioned problems, the present invention provides an elevator inspection method using an inspection device, wherein a tension acquisition unit of the inspection device selects a plurality of main ropes according to the operating conditions indicating the moving position of the car of the elevator. Tension data indicating the respective tensions is obtained, and the number of times of bending including the number of times of bending and the deterioration position indicating the position where the number of times of bending of the plurality of main ropes according to the operating conditions is obtained. data is obtained, and the deterioration degree calculation unit of the inspection device uses the tension data and the bending number data to calculate the degree of deterioration indicating the degree of deterioration at the deterioration position of each of the plurality of main ropes, The inspection result creation unit of the inspection device identifies, for each of the plurality of main ropes, a deteriorated position where the degree of deterioration is the greatest and the deterioration has progressed the most, and for each of the plurality of main ropes, information for identifying the main rope and the creating an inspection result indicating the state of deterioration including the position of deterioration of the main rope with the most deterioration, identifying the main rope with the most deterioration from among the plurality of main ropes, and determining the most deteriorated main rope The inspection result of the main rope is distinguished from the inspection result of the other main ropes , and the inspection result is output to the interface unit of the inspection device , and the remaining life calculation unit of the inspection device calculates the predetermined deterioration specified value and In the elevator inspection method, the remaining life indicating the replacement time of the specified main rope that is most deteriorated among the plurality of main ropes is calculated as the remaining life of the elevator using the degree of deterioration.

The present invention also includes an elevator inspection apparatus that executes this elevator inspection method.

According to the present invention, it is possible to grasp the degree of deterioration of each main rope by considering its tension.

A diagram showing a system configuration in an embodiment of the present invention The figure which shows the external appearance of the terminal device for work in one Example of this invention. 1 is a block diagram showing the configuration of a working terminal device according to an embodiment of the present invention; FIG. FIG. 4 is a diagram for explaining tension measurement using an optical tension sensor according to an embodiment of the present invention; The figure which shows an example of the tension data in one Example of this invention. FIG. 4 is a diagram showing an example of data on the number of times of bending according to an embodiment of the present invention; 4 is a flowchart for calculating the degree of deterioration and remaining life in an embodiment of the present invention; The figure which shows an example of the display screen which displays the deterioration degree in one Example of this invention. FIG. 4 is a diagram for explaining tension measurement using a displacement sensor type tension sensor according to an embodiment of the present invention;

An embodiment in which the present invention is applied to an abnormality inspection of an elevator main rope will be described below with reference to the drawings. In addition, in the embodiment of the present invention, main rope tension measurement of the elevator and flaw detection of the main rope are performed. More specifically, the rope tensions of multiple main ropes that suspend the elevator car and the counterweight are measured, and the main ropes are inspected for flaws based on the operating state of the elevator and the rope tension measurement results.

This embodiment performs the inspection for flaw detection of the main rope of an elevator. In Example 1, a method for calculating the degree of deterioration indicating the degree of deterioration of the main rope from the tension of the main rope of the elevator and the number of times of operation at each position along the entire length of the main rope will be described. Fig. 1 shows the system configuration for performing this inspection.

In FIG. 1, it is assumed that an optical tension sensor 11 is installed as a tension sensor in a 2:1 roping elevator. Note that the tension sensor is not limited to the optical tension sensor 11, as will be described later. In the system configuration shown in FIG. 1, the 2:1 roping elevator consists of a car 1, a counterweight 2, a main rope 3, a traction sheave 4, a baffle 5, a rope socket 6, a thimble rod 7, a support spring 8 and a nut 9. , a control panel 10 . A plurality of main ropes 3 are provided for suspending the car 1 and the counterweight 2. - 特許庁Rope sockets 6 are attached to both ends of these main ropes 3, and are also provided in plurality. That is, the thimble rod 7 is for fixing the rope socket 6 . A support spring 8 supports the main rope 3 via the thimble rod 7 . A nut 9 is screwed onto the thimble rod 7 to determine the amount of expansion and contraction of the support spring 8 .

In addition, in FIG. 1, it seems that one each of the main rope 3, the rope socket 6, the thimble rod 7, the support spring 8, and the nut 9 is provided, but a plurality of each are provided. Also, this embodiment can be applied to various elevators other than the 2:1 roping elevator.

Here, the rope tensions of the plurality of main ropes 3 (hereinafter referred to simply as tensions) vary, and vary depending on the running position of the car 1, and appear in the amount of expansion and contraction of the support springs 8 attached to the main ropes 3. The optical tension sensor 11 measures the amount of expansion and contraction of the support spring 8 while the elevator is running and is operated by the control panel 10. Send. At the time of measurement, the operational status of the elevator recorded in the control panel 10 , that is, time-series data of the moving position of the car 1 is transmitted to the work terminal device 12 . Thus, in this embodiment, the work terminal device 12 is used as an elevator inspection device.

Further, the work terminal device 12 acquires tension data of each main rope 3 from L1 to L4 indicating the measured expansion/contraction amounts of the support springs 8 . Then, the work terminal device 12 uses this tension data and bending number data indicating the number of bending times of the main rope for each car position specified by the operating status of the elevator to calculate the degree of deterioration. During this calculation, the work terminal device 12 may calculate the degree of deterioration by further multiplying by a coefficient. In addition, it is desirable that the work terminal device 12 uses the degree of deterioration to calculate the remaining life including the replacement time of the main rope 3 . Details of the work terminal device 12 will be described later.

Also, the work terminal device 12 is connected to the center device 13 via the network 14 . Here, the center device 13 can be implemented by a so-called computer, and receives information such as the degree of deterioration and remaining life from the work terminal device 12 . The center device 13 then creates a maintenance schedule for inspection, replacement, etc., using these pieces of information. The center device 13 can notify the results to other work terminal devices 12, administrator terminal 15, etc. via the network 14. FIG. Here, the administrator terminal 15 can be realized by a computer such as a notebook PC.

Also, the network 14 only needs to be able to communicate information, and can be realized by the Internet or the like. Furthermore, the network 14 may be of any communication format, such as wired or wireless.

Next, with reference to FIGS. 2A and 2B, the working terminal device 12 that calculates the degree of deterioration and remaining life in this embodiment will be described. First, FIG. 2A shows the appearance of the work terminal device 12 . The work terminal device 12 includes an interface section 123 that receives input from a worker, that is, a user, and outputs information. For example, the work terminal device 12 can be realized by a so-called tablet terminal, and the interface unit 123 can be realized by a touch panel. However, the work terminal device 12 may be implemented by a portable terminal device such as a notebook PC other than the tablet terminal. For this reason, the interface section 123 may be mounted separately into an input section and an output section.

Further, the work terminal device 12 is connected to the network 14 by radio or the like. Further, the control panel 10 and tension sensors such as the optical tension sensor 11 are also connected. Next, the configuration of the work terminal device 12 including the functions for these connections will be described with reference to FIG. 2B.

FIG. 2B is a block diagram showing the configuration of the work terminal device 12. As shown in FIG. The work terminal device 12 has a processing section 121 , a memory section 122 , an interface section 123 , a data input/output section 124 , a storage section 125 and a communication section 126 .

The processing unit 121 executes various types of information processing. For this purpose, the processing unit 121 has a tension acquisition unit 1211 , a bending number acquisition unit 1212 , a deterioration degree calculation unit 1213 , a remaining life calculation unit 1214 and an inspection result generation unit 1215 . It should be noted that the processing unit 121 may be configured such that the processing unit alone executes various types of information processing, or each unit may be configured independently. Also, the processing unit 121 may execute the processing of each unit according to a program, like a CPU, for example.

Also, the interface unit 123 can be realized by, for example, a touch panel as described above. Also, the data input/output unit 124 is connected to the control panel 10 and tension sensors such as the optical tension sensor 11 to exchange information with them. In addition, the storage unit 125 stores various information used in each process described later and information specified by these. The specific content will be described later.

Furthermore, the communication unit 126 has a function of connecting to the network 14 and transmits various information such as the degree of deterioration to the center device 13 and the like. The communication unit 126 also receives information from the center device 13, other work terminal devices 12, and the like.

Next, measurement of the tension of the main rope 3 using the optical tension sensor 11 will be described with reference to FIG. FIG. 3 shows an example of an elevator having four main ropes 3 . In FIG. 3, support springs 8a to 8d are provided for each of the four main ropes 3 (3a to 3d). Each support spring 8a-8d is provided with a thimble rod 7a-7d and a nut 9a-9d, respectively. Hereinafter, the support springs 8a-8d, the thimble rods 7a-7d, the nuts 9a-9d and the portions of the main ropes 3a-3d provided with these are collectively referred to as "ends".

Also, the optical tension sensor 11 is installed such that the ends, in particular the support springs 8a-8d, are photographed. Then, the optical tension sensor 11 photographs the ends of the elevator while the elevator is in operation, detects the spring lengths L1 to L4 of the support springs 8a to 8d according to the photographed content, and transmits the detected spring lengths L1 to L4 to the work terminal device 12. . For the convenience of explanation, the optical tension sensor 11 is shown in the drawing to photograph only the main rope 3d. Needless to say.

Here, it is preferable that the optical tension sensor 11 associates the spring lengths L1 to L4 with the detected time information and transmits them to the work terminal device 12 . Further, the optical tension sensor 11 may associate the spring lengths L1 to L4 with car position information of the car 1 at that time.

Next, the work terminal device 12 calculates the tension of each of the main ropes 3a-3d from the received spring lengths L1-L4. The work terminal device 12 then adds this tension and the corresponding car position information obtained from the control panel 10 . At this time, the work terminal device 12 compares the time information received from the optical tension sensor 11 with the time information corresponding to the car position information from the control panel 10, thereby adding the corresponding car position information. become. Further, when receiving the car position information from the optical tension sensor 11 , the work terminal device 12 can omit receiving the car position information from the control panel 10 .

As a result, the work terminal device 12 acquires the tension data T1 to T4 of the main ropes 3a to 3d corresponding to the car position. The work terminal device 12 stores the tension data T1 to T4 in the storage unit 125. FIG. The work terminal device 12 may cause the interface unit 123 to display balloon portions (L1 to L4), which are enlarged ends of FIG. In this case, as shown in FIG. 3, the photographed image of the optical tension sensor 11 and the respective spring lengths L1 to L4 may be superimposed and displayed, or the numbers of the spring lengths L1 to L4 may be displayed.

Next, FIG. 4 shows an example of the tension data T1 to T4. In FIG. 4, it is assumed that tension data indicating the tension for each car position (t) of the car 1 is calculated as follows for each of the four main ropes 3a to 3d. In FIG. 4, the tension data T1(t) of the first main rope 3a, the tension data T2(t) of the second main rope 3b, and the tension data T3(t) of the third main rope 3c are obtained when the car position is Tension tends to increase in lower floors. However, their respective tension values are different and the degree of increase is also different for each main rope. Conversely, the tension data T4(t) of the fourth main rope 3d shows a tendency that the tension T4(t) decreases as the floor goes down. The tension data T1 to T4 stored in the storage unit 125 may be in tabular format.

In addition, the control panel 10 records the operating state of the elevator, and records the bending number data indicating the accumulated number of bending times of the rope for each car position. FIG. 5 shows an example of this bending frequency data. As shown in FIG. 5, the bending frequency data N(t) is determined by the operating conditions indicating the movement position of the car 1 of the elevator. In other words, the number of bending times N(t) can be specified by the frequency of movement of the car position where the car 1 moves. The example shown in FIG. 5 is an example of bending frequency data N(t) in an elevator in which the lowest floor is used more frequently than other elevators. Here, the bending frequency data N(t) also includes bending points in each of the main ropes 3a to 3d.

The number of times of bending is the same or substantially the same for each of the main ropes 3a to 3d, and in this embodiment, the number of times of bending N(t) is treated collectively. However, the bending number data N(t) may also be provided for each of the main ropes 3a to 3d, similarly to the tension data T1 to T4. Furthermore, the bending frequency data N(t) may be in tabular format. Further, the work terminal device 12 receives the bending frequency data N(t) from the control panel 10 and stores it in the storage unit 125, as described above.

Calculation of the degree of deterioration and remaining life of the main rope 3 by the work terminal device 12 will be described below.

First, before processing by the work terminal device 12, the optical tension sensor 11 detects the spring lengths L1 to L4 at the ends of the main ropes 3a to 3d when the car 1 makes one reciprocation, and detects It is transmitted to the work terminal device 12 in association with the time information obtained. In other words, the optical tension sensor 11 transmits the time-series data of the spring lengths L1 to L4 to the work terminal device 12. FIG. Here, the optical tension sensor 11 may be permanently installed in the elevator to be inspected to detect the spring lengths L1 to L4, or an operator may install the optical tension sensor 11 during periodic inspection work. detection may be performed by

Then, in step S1, the tension acquisition unit 1211 acquires tension data T1(t) to T4(t) using the time-series data of the spring lengths L1 to L4. That is, the tension acquisition unit 1211 acquires tension data T1(t) to T4(t) indicating the tension according to the operating status of the car 1. FIG.

For this purpose, the tension acquisition unit 1211 first receives the time-series data of the spring lengths L1 to L4 from the optical tension sensor 11 via the data input/output unit . Next, the tension acquisition unit 1211 obtains the time-series data of the tensions T1-T4 from the time-series data of the spring lengths L1-L4. Then, the tension acquisition unit 1211 compares the time-series data of the movement position of the car 1 received from the control panel 10 via the data input/output unit 124 with the time-series data of the tensions T1 to T4 to obtain the car Tension data T1(t) to T4(t) indicating the tension for each car position are obtained.

Further, in step S2, the bending number acquisition unit 1212 reads the bending number data N(t) indicating the rope bending number for each car position from the control panel 10 via the data input/output unit 124. FIG. Note that the work terminal device 12, not the control panel 10, may specify or store the bending number data N(t).

Further, in step S3, the deterioration degree calculation unit 1213 multiplies the tension data T1(t) to T4(t) of each of the main ropes 3a to 3d by the tension influence coefficient A stored in the storage unit 125, An index (A×Tn(t)) is calculated. The use of the tension influence coefficient A may be omitted.

Further, in step S4, the deterioration degree calculation unit 1213 multiplies the bending number data N(t) by the bending number influence coefficient B stored in the storage unit 125 to obtain a bending number index (B×N(t)). Calculate It should be noted that the use of the number-of-bends influence coefficient B may be omitted.

Next, in step S5, the deterioration degree calculator 1213 calculates the deterioration degree of each of the main ropes 3a to 3d. For this reason, the deterioration degree calculation unit 1213 multiplies each of the main ropes 3a to 3d by the tension index, the bend number index, and the deterioration cause coefficient C stored in advance in the storage unit 125 to obtain the main ropes 3a to 3d. Each deterioration degree W is calculated. Here, the bend number data N(t) also includes the bend location. Therefore, the deterioration degree calculation unit 1213 calculates the deterioration degree for each bending position among the main ropes 3a to 3d. A position where this bending occurs is called a deteriorated position.

Here, the inspection result creation unit 1215 creates inspection results according to the calculated degree of deterioration, and outputs the inspection results to the interface unit 123 . It is desirable that the interface unit 123 displays this. The inspection results include information for identifying the main rope in addition to the degree of deterioration. An example of this display screen is shown in FIG. As shown in FIG. 7, the display contents include the building name specifying the building in which the elevator to be inspected is installed, the number of the elevator in the building, and the main rope No. specifying the main rope. Furthermore, the position and degree of deterioration indicating the state of deterioration are displayed for each main rope. In this way, the display screen displays information specifying the main rope to be inspected and information indicating the state of deterioration of the specified main rope.

Note that, in this embodiment, the inspection result creation unit 1215 specifies the position and the degree of deterioration where the degree of deterioration is the greatest for each of the main ropes 3a to 3d as the deterioration position and the degree of deterioration, and displays them on the interface unit 123. Then, the main rope No., the deterioration position, and the deterioration degree with the largest deterioration degree (deterioration progressed) among the deterioration degrees are displayed separately from others. For example, as shown in FIG. 7, the thickness and size of characters may be changed, or the color may be changed. At this time, at least one of the main rope number, deterioration position, and deterioration degree may be displayed separately from the others.

In addition, the inspection result creation unit 1215 may specify the main rope No. (3d in FIG. 7) with the highest degree of deterioration, and display this main rope information in a limited manner. Furthermore, the inspection result creation unit 1215 may output each location where bending of each main rope occurs. Here, it is preferable to indicate the deteriorated position by a position based on the traction sheave 4 or by the travel time of the car 1 .

Furthermore, the inspection result creation unit 1215 transmits information specifying the deterioration position to the control panel 10 via the data input/output unit 124 . Then, the control panel 10 drives the main rope (moves the car 1) so as to move the deteriorated position of the main rope to a position where the operator can check.

7 to the center device 13 via the network 14 using the communication unit 126. The inspection result creation unit 1215 may transmit the deterioration degree information shown in FIG. In this case, it becomes possible to display the display screen shown in FIG.

As a result, the user of the work terminal device 12 or the administrator terminal 15 can determine the most deteriorated position in the entire length of a plurality of main ropes. Although the processing may end up to step S5, more preferably, the work terminal device 12 executes step S6. In step S6, the remaining life calculation unit 1214 calculates the remaining life indicating replacement time. The remaining life of the most deteriorated main rope among the plurality of main ropes 3a to 3d is the remaining life of the elevator to be inspected. For this reason, in the present embodiment, the remaining life is calculated focusing on the main ropes whose deterioration has progressed, but the remaining life may be calculated for each of the main ropes 3a to 3d.

To calculate the remaining life, the remaining life calculator 1214 identifies the main rope that has deteriorated most (greatly deteriorated) among the main ropes 3a to 3d. In the example of FIG. 7, the main rope 3d is identified. Next, the remaining life calculation unit 1214 obtains the degree of deterioration Ww (30 in the example of FIG. 7) of the specified main rope. Further, the remaining life calculation unit 1214 identifies the tension Tw corresponding to the degree of deterioration Ww from the tension data. Further, the remaining life calculation unit 1214 reads the specified deterioration value D determined for each type of elevator or main rope to be inspected stored in the storage unit 125 .

Then, the remaining life calculation unit 1214 calculates the remaining life, which indicates how many times the main rope can withstand bending, using the deterioration degree Ww, the tension Tw, and the deterioration specified value D. Specifically, remaining life calculation unit 1214 executes calculation of α×(D−Ww)/Ww (where α is the number of times of bending stored in storage unit 125). Further, the remaining life calculation unit 1214 may calculate the timing of replacement or maintenance by multiplying the calculated remaining life (number of times of bending) by the life per number of times of bending.

In this example, the explanation is given on the premise that the four main ropes were installed at the same time. However, if only one specific rope is replaced for maintenance reasons, the replacement time is stored in the center device 13, etc., and the replacement is performed. It is necessary to calculate the remaining life considering the time.

It is desirable that the test result creation unit 1215 displays this result on the interface unit 123 in addition to FIG. 7 or independently. Also, like the degree of deterioration, it may be transmitted to the center device 13 via the network 14 using the communication unit 126 . This makes it possible to display the display screen shown in FIG.

With the above processing, it is possible to calculate and estimate the remaining life of the main rope whose degree of deterioration has reached the specified value until the degree of deterioration of the replacement standard is reached.

This is the end of the description of the processing of this embodiment, but the present embodiment can also be applied to the following modifications.

First, an example using a displacement sensor type rope tension sensor 16 as a tension sensor will be described. FIG. 8 is a diagram for explaining tension measurement using the displacement sensor type rope tension sensor 16. As shown in FIG. This figure is similar to FIG. 3, and instead of the optical tension sensor 11, a displacement sensor type rope tension sensor 16 is provided. This displacement sensor type rope tension sensor 16 is installed in the vertical direction of the support springs 8a to 8d arranged at the end, and detects the dimensional change (change in L1 to L4) of each of the support springs 8a to 8d during elevator operation. It is also possible to measure the tension by attaching strain gauges to the main ropes 3a to 3d and the thimble rod 7 instead of these tension sensors. That is, the tension may be measured using the amount of strain detected by the strain gauge.

Furthermore, although the processing of the flowchart shown in FIG. In this case, the center device 13 has the same functions as the above-described tension acquisition unit 1211, bending number acquisition unit 1212, deterioration degree calculation unit 1213, remaining life calculation unit 1214, and inspection result creation unit 1215, and each process described above. to run. In this case, the center device 13 and the work terminal device 12 mutually transmit and receive data necessary for the processing. This necessary data includes the data illustrated in FIG. Further, even when the center device 13 executes at least a part of the processing in FIG. and these can display that information.

According to the above embodiment, the degree of deterioration can be grasped for each of the plurality of main ropes. Therefore, it is possible to narrow down the main ropes that require detailed inspection from among a plurality of main ropes present in the elevator, and it is possible to reduce the inspection work time.

1 car, 2 counterweight, 3 main rope, 4 traction sheave, 5 baffle, 6 rope socket, 7 thimble rod, 8 support spring, 9 nut, 10 control panel, 11 optical tension sensor, 12 working terminal, 13 central device, 14 network, 15 administrator terminal, 16 displacement sensor type rope tension sensor

Claims (4)

In an elevator inspection method using an inspection device,
The tension acquisition unit of the inspection device acquires tension data indicating the tension of each of the plurality of main ropes according to the operating status indicating the moving position of the elevator car,
The bending number acquisition unit of the inspection device acquires bending number data including deterioration positions and bending numbers indicating positions at which bending occurs in the plurality of main ropes according to the operation status,
The deterioration degree calculation unit of the inspection device uses the tension data and the bending number data to calculate the deterioration degree indicating the degree of deterioration at the deterioration position of each of the plurality of main ropes,
The inspection result creation unit of the inspection device,
For each of the plurality of main ropes, a deterioration position where the degree of deterioration is the greatest and the deterioration has progressed the most is specified;
For each of the plurality of main ropes, an inspection result indicating the deterioration state including information specifying the main rope and the deterioration position of the main rope where deterioration is most advanced is created, and among the plurality of main ropes, the deterioration is the most advanced . identifying the main rope, distinguishing the inspection result of the identified main rope with the most deterioration from the inspection results of other main ropes and outputting the inspection result to the interface unit of the inspection device ;
The remaining life calculation unit of the inspection device uses a predetermined deterioration standard value and the degree of deterioration to determine the remaining life indicating the replacement time of the main rope that is most deteriorated among the plurality of main ropes. A method for inspecting an elevator, wherein the service life is calculated as the remaining service life of the elevator . In the elevator inspection method according to claim 1 ,
An elevator inspection method, wherein the remaining life calculation unit specifies the deterioration position of the main rope where the deterioration is most advanced based on the operating status. In the elevator inspection method according to claim 2 ,
The inspection result creation unit is
By outputting the deterioration position of the main rope where the deterioration has progressed most to the control panel for driving the plurality of main ropes using the position based on the traction sheave of the elevator, 4. An elevator inspection method for driving the plurality of main ropes so that the deteriorated position of the most deteriorated main rope can be confirmed by an operator of the elevator. In elevator inspection equipment,
a tension acquisition unit that acquires tension data indicating the tension of each of the plurality of main ropes according to the operating status indicating the movement position of the elevator car;
a bending frequency data acquisition unit that acquires bending frequency data including deterioration positions indicating positions where bending occurs in the plurality of main ropes according to the operating status and bending frequency;
a deterioration degree calculation unit that calculates a degree of deterioration indicating the degree of deterioration at the deterioration position of each of the plurality of main ropes using the tension data and the bending number data;
For each of the plurality of main ropes, a deterioration position where the degree of deterioration is the greatest and the deterioration has progressed the most is specified;
For each of the plurality of main ropes, an inspection result indicating the deterioration state including information specifying the main rope and the deterioration position of the main rope where deterioration is most advanced is created, and among the plurality of main ropes, the deterioration is the most advanced . The main rope is specified, and the inspection result of the specified main rope with the most deterioration is distinguished from the inspection result of the other main ropes, and the inspection result is output to the interface unit of the inspection device . Department and
Using a predetermined deterioration specified value and the degree of deterioration, a remaining life indicating replacement time of the identified main rope that is most deteriorated among the plurality of main ropes is calculated as a remaining life of the elevator. and a remaining life calculator .

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