CN114007974B

CN114007974B - Inspection apparatus

Info

Publication number: CN114007974B
Application number: CN201980097786.4A
Authority: CN
Inventors: 桥爪哲朗; 安部雅哉; 中谷彰宏; 小林翔一; 平井敬秀
Original assignee: Mitsubishi Electric Building Techno Service Co Ltd
Current assignee: Mitsubishi Electric Building Solutions Corp
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2022-05-06
Anticipated expiration: 2039-06-27
Also published as: JP6989057B2; JPWO2020261500A1; WO2020261500A1; CN114007974A

Abstract

The inspection device (25) is provided with, for example, detectors (26) to (29), a calculation unit (34), a display (31), and a display control unit (35). The detectors (26-29) are detachable from the inner wall of the elevator car (1). The detectors (26) to (29) detect vibrations of the inner wall of the car (1). A calculation unit (34) calculates the degree of abnormality associated with the guide member of the car (1) from the vibrations detected by the detectors (26) to (29). A display control unit (35) displays the result calculated by the calculation unit (34) on a display (31).

Description

Inspection apparatus

Technical Field

The present invention relates to an inspection device used in an elevator and an inspection method performed in an elevator.

Background

Patent document 1 describes an elevator apparatus. In the elevator apparatus described in patent document 1, the car is provided with a guide device. The guide device is provided with a pressure sensor. The pressure sensor detects a pressure received by the guide device from the guide rail. An abnormality is detected based on the pressure detected by the pressure sensor.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2017-171449

Disclosure of Invention

Problems to be solved by the invention

In order to realize the abnormality detection function described in patent document 1, a guide device including a pressure sensor is required. Therefore, the above-described function cannot be realized by the existing elevator apparatus. In order to achieve the above function with an existing elevator apparatus, the guide apparatus needs to be replaced.

The present invention has been made to solve the above problems. The purpose of the present invention is to provide an inspection device and an inspection method that can grasp an abnormality associated with a guide member even in an existing elevator device.

Means for solving the problems

The inspection device of the present invention includes: a plurality of detectors that are attachable to and detachable from an inner wall of a car of an elevator and detect vibration of the inner wall; a 2 nd detection unit that detects a position of the car; a conversion unit for converting the time series data of the vibration detected by each of the plurality of detectors into data relative to the position of the guide rail according to the position detected by the 2 nd detection unit and the setting interval between the 1 st guide device and the 2 nd guide device; a calculation unit that calculates an abnormality degree associated with a guide member of the car based on the vibration detected by each of the plurality of detectors; a display; and a display control unit that displays the result calculated by the calculation unit on a display. The 1 st guide device and the 2 nd guide device are provided in the car, and the 2 nd guide device is disposed below the 1 st guide device, and the 1 st guide device and the 2 nd guide device slide on the guide rail when the car moves.

The inspection device of the present invention includes: a detector that is attachable to and detachable from an inner wall of a car of an elevator and detects vibration of the inner wall; a calculation unit that calculates a degree of abnormality associated with the guide member of the car based on vibration detected by the detector in a state where the detector is mounted at a 1 st position of the inner wall and vibration detected by the detector in a state where the detector is mounted at a 2 nd position different from the 1 st position of the inner wall; a display; and a display control unit that displays the result calculated by the calculation unit on a display.

The inspection method of the present invention includes the steps of: installing a plurality of detectors for detecting vibration on an inner wall of a car of an elevator; moving the car after mounting the plurality of detectors to the inner wall; calculating an abnormality degree associated with a guide member of the car based on vibrations detected by each of the plurality of detectors during movement of the car; displaying the calculation result of the abnormality degree on a display; and detaching the plurality of detectors from the inner wall.

The inspection method of the present invention includes the steps of: installing a detector for detecting vibration at the 1 st position of the inner wall of the cage of the elevator; moving the car after the detector is mounted at the 1 st position of the inner wall; acquiring 1 st time series data of vibration detected by a detector during the movement of the car; stopping the car after the 1 st time series data is acquired; after the 1 st time series data is obtained, the detector is arranged at the 2 nd position of the inner wall, which is different from the 1 st position; moving the car after mounting the detector at the 2 nd position of the inner wall; acquiring 2 nd time series data of vibration detected by a detector during the movement of the car; calculating an abnormality degree associated with a guide member of the car using the 1 st time series data and the 2 nd time series data; displaying the calculation result of the abnormality degree on a display; and removing the detector from the 2 nd position of the inner wall.

Effects of the invention

According to the present invention, it is possible to grasp an abnormality associated with a guide member even in an existing elevator apparatus.

Drawings

Fig. 1 is a diagram showing an example of an elevator apparatus.

Fig. 2 is a view showing a section a-a of fig. 1.

Fig. 3 is a diagram showing an example of the inspection apparatus according to embodiment 1.

Fig. 4 is a flowchart showing an example of an inspection method using the inspection apparatus.

Fig. 5 is a diagram showing an example in which the detector is attached to the car.

Fig. 6 is a diagram showing an example of time series data of the vibration detected by the detector.

Fig. 7 is a diagram showing a display example of the calculation result.

Fig. 8 is a diagram showing an example of data stored in the storage unit.

Fig. 9 is a diagram for explaining the function of the data conversion unit.

Fig. 10 is a diagram showing an example of data stored in the storage unit.

Fig. 11 is a flowchart showing another example of the inspection method using the inspection apparatus.

Fig. 12 is a diagram showing an example in which the detector is attached to the car.

Fig. 13 is a diagram for explaining the function of the inspection apparatus.

Fig. 14 is a diagram showing an example in which the detector is attached to the car.

Fig. 15 is a flowchart showing an example of the operation of the inspection terminal.

Fig. 16 is a diagram for explaining the function of the feature value calculating unit.

Fig. 17 is a diagram for explaining the function of the judgment section.

Fig. 18 is a diagram showing an example of checking hardware resources of a terminal.

Fig. 19 is a diagram showing another example of checking hardware resources of a terminal.

Detailed Description

The invention is described with reference to the accompanying drawings. Duplicate descriptions are appropriately simplified or omitted. In the drawings, the same reference numerals denote the same or equivalent parts.

Embodiment mode 1

Fig. 1 is a diagram showing an example of an elevator apparatus. The elevator apparatus includes a car 1 and a counterweight 2. The car 1 moves up and down in the hoistway 3. The counterweight 2 moves up and down in the hoistway 3. The car 1 and the counterweight 2 are suspended in the hoistway 3 by the main ropes 4.

The main ropes 4 are wound around a drive sheave 6 of a hoisting machine 5. The car 1 moves with the rotation of the drive sheave 6. The control device 7 controls the hoisting machine 5. That is, the movement of the car 1 is controlled by the control device 7. Fig. 1 shows an example in which a hoisting machine 5 and a control device 7 are installed in a machine room 8 above a hoistway 3. The hoisting machine 5 and the control device 7 may be installed in the hoistway 3. When the hoisting machine 5 is installed in the hoistway 3, the hoisting machine 5 may be installed on the ceiling of the hoistway 3 or may be installed in the pit of the hoistway 3.

Fig. 2 is a view showing a section a-a of fig. 1.

Guide rails

9 and 10 are provided in the hoistway 3. The car 1 is arranged between the

guide rails

9 and 10. The movement of the car 1 is guided by

guide rails

9 and 10.

The car 1 includes a car frame 11. As shown in fig. 1 and 2, in the 1: in a rope-winding type elevator apparatus 1, a main rope 4 is connected to a car frame 11. The car 1 includes, for example, a floor 12, a wall 13, a wall 14, and a ceiling 15. The floor 12, the wall 13, the wall 14, and the ceiling 15 are supported by the car frame 11. The floor 12, the wall 13, the wall 14, and the ceiling 15 form a car room 16 in which a person sits. The wall 13 is a wall adjacent to the guide rail 9 among the walls forming the cage 16. An inner wall 13a of the car 1 is formed on the wall 13. The wall 14 is a wall adjacent to the guide rail 10 among the walls forming the cage 16. An inner wall 14a of the car 1 is formed in the wall 14.

The car 1 further includes guide devices 17-20. The guide devices 17 to 20 are provided on the car frame 11. The guide device 17 is provided on the upper portion of the car frame 11 so as to face one of the guide rails 9. The guide device 18 is provided at a lower portion of the car frame 11 so as to face the guide rail 9. The guide device 18 is disposed below the guide device 17. Reference numeral H1 shown in fig. 2 denotes a setting interval between the guide 17 and the guide 18. The guide device 19 is provided on the upper portion of the car frame 11 so as to face the other guide rail 10. The guide device 20 is provided at a lower portion of the car frame 11 so as to face the guide rail 10. The guide device 20 is disposed below the guide device 19. The setting interval between the guide 19 and the guide 20 is H1.

When the car 1 moves, the

guide devices

17 and 18 slide on the guide rails 9. When the car 1 moves, the

guide devices

19 and 20 slide on the guide rails 10. Therefore, when the car 1 moves, vibration may occur in the car 1 due to the guide devices 17 to 20. Further, when the car 1 moves, sometimes vibration is generated in the car 1 due to the

guide rails

9 and 10. For example, when the lubricating oil of the guide rail 9 is insufficient, vibration occurs in the car 1. As another example, when there is a step difference in the guide rail 9, vibration occurs in the car 1. When the guide device 17 is worn and the gap between the guide device 17 and the guide rail 9 becomes large, vibration is generated in the car 1.

Hereinafter, a device for checking whether or not abnormal vibration is generated by the guide member of the car 1 will be described. The guide member of the car 1 includes guide devices 17 to 20. The guide members of the car 1 comprise

guide rails

9 and 10.

Fig. 3 is a diagram showing an example of the inspection apparatus 25 according to embodiment 1. The inspection device 25 includes, for example, detectors 26 to 29 and an inspection terminal 30. The inspection terminal 30 includes, for example, a display 31, an input device 32, a storage unit 33, a calculation unit 34, a display control unit 35, and an operation instruction unit 36.

The detector 26 is a device for detecting vibration of the inner wall of the car 1. The detector 26 is detachable from the inner wall of the car 1. The detector 26 is connected to the inspection terminal 30 by wire or wirelessly. For example, the detector 26 includes a magnet and an acceleration sensor. The detector 26 is attached to an arbitrary portion of the inner wall of the car 1 by means of a magnet. The detector 26 transmits information of the acceleration detected by the acceleration sensor to the inspection terminal 30 as information indicating the vibration of the inner wall of the car 1. The detector 26 is preferably provided with a 3-axis acceleration sensor. The detector 26 may include a microphone or a strain sensor as means for detecting vibration of the inner wall of the car 1 instead of the acceleration sensor.

The detectors 27 to 29 have the same functions as those of the detector 26. That is, the detector 27 is a device for detecting the vibration of the inner wall of the car 1. The detector 27 is detachable from the inner wall of the car 1. The detector 27 is connected to the inspection terminal 30 by wire or wirelessly. For example, the detector 27 includes a magnet and an acceleration sensor. The detector 27 is attached to an arbitrary portion of the inner wall of the car 1 by means of a magnet. The detector 27 transmits information of the acceleration detected by the acceleration sensor to the inspection terminal 30 as information indicating the vibration of the inner wall of the car 1. The detector 27 is preferably provided with a 3-axis acceleration sensor. The detector 27 may include a microphone or a strain sensor as means for detecting vibration of the inner wall of the car 1 instead of the acceleration sensor. The

detectors

28 and 29 are also the same as the detector 27. In the following, an example in which the detectors 26 to 29 are each provided with an acceleration sensor will be described.

The input device 32 is a device for inputting information by the user of the inspection device 25. The inspection terminal 30 may also include a keyboard and a mouse as the input device 32. The inspection terminal 30 may also include an input device 32 of a touch panel system.

Fig. 4 is a flowchart showing an example of an inspection method using the inspection apparatus 25. Maintenance personnel of the elevator regularly perform maintenance of the elevator apparatus. For example, the inspection using the inspection device 25 is performed when a maintenance person performs maintenance. The detectors 26 to 29 are not mounted on the car 1 during normal service using the elevator device. The maintenance worker first attaches the detectors 26 to 29 to the car 1 (S101).

Fig. 5 is a view showing an example in which the detectors 26 to 29 are mounted on the car 1. Fig. 5 is a view corresponding to fig. 2. In S101, the maintenance worker attaches the detectors 26 to 29 to the inner wall of the car 1 in accordance with the positions of the guide devices 17 to 20. For example, the detector 26 is attached to the upper portion of the inner wall 13a in accordance with the position of the guide device 17. The detector 27 is attached to the lower portion of the inner wall 13a in accordance with the position of the guide 18. The detector 28 is mounted on the upper portion of the inner wall 14a in accordance with the position of the guide device 19. The detector 29 is attached to the lower portion of the inner wall 14a in accordance with the position of the guide 20.

Next, the maintenance person starts movement of the car 1 (S102). For example, the maintenance worker moves the car 1 by operating an operation panel provided in the car 1. The maintenance person can also move the car 1 by operating the inspection terminal 30. For example, when specific information is input from the input device 32, the operation command unit 36 transmits a control signal for starting the movement of the car 1 to the control device 7. Upon receiving the control signal from the inspection terminal 30, the control device 7 starts movement of the car 1.

While the car 1 is moving, the inspection terminal 30 acquires time series data of the vibrations detected by the detectors 26 to 29 (S103). For example, the time series data of the vibration detected by the detector 26 is stored in the storage unit 33. The time series data of the vibration detected by the detector 27 is stored in the storage unit 33. The time series data of the vibration detected by the detector 28 is stored in the storage unit 33. The time series data of the vibration detected by the detector 29 is stored in the storage unit 33. Then, the car 1 stops (S104).

Then, the calculation unit 34 calculates the degree of abnormality associated with the guide member of the car 1 based on the vibrations detected by the detectors 26 to 29, respectively. For example, the calculation unit 34 calculates the maximum amplitude value of the vibration detected by each of the detectors 26 to 29 (S105). FIG. 6 is a diagram showing an example of time series data of vibrations detected by the detectors 26 to 29. The calculation unit 34 calculates the maximum amplitude Am1 of the vibration detected by the detector 26. The calculation unit 34 calculates the maximum amplitude Am2 of the vibration detected by the detector 27. The calculation unit 34 calculates the maximum amplitude Am3 of the vibration detected by the detector 28. The calculation unit 34 calculates the maximum amplitude Am4 of the vibration detected by the detector 29. FIG. 6 shows an example of Am3 > Am3 > Am1 > Am 2.

Then, the calculation unit 34 calculates the degree of abnormality from the maximum amplitude value of the vibration detected by each of the detectors 26 to 29 (S106). For example, the calculation unit 34 may calculate the degree of abnormality of Am1, the degree of abnormality of Am3, and the degree of abnormality of Am4, assuming that the degree of abnormality of the minimum value Am2 is 1. In the example shown in the present embodiment, the detector 26 is attached to the upper portion of the inner wall 13a in accordance with the position of the guide device 17. Therefore, the calculation unit 34 calculates the degree of abnormality obtained from the vibration detected by the detector 26 as the degree of abnormality of the guide device 17. Similarly, the calculation unit 34 calculates the degree of abnormality obtained from the vibration detected by the detector 27 as the degree of abnormality of the guidance device 18. The calculation unit 34 calculates the degree of abnormality obtained from the vibration detected by the detector 28 as the degree of abnormality of the guidance device 19. The calculation unit 34 calculates the degree of abnormality obtained from the vibration detected by the detector 29 as the degree of abnormality of the guidance device 20.

As another example, the calculation unit 34 may calculate the displacement from the time series data of the acceleration by using time integration or the like. For example, in S105, the calculation unit 34 calculates the displacement from the time series data of the acceleration detected by the acceleration sensor of the detector 26, and obtains the maximum value Am1 of the amplitude of the calculated displacement. Similarly, the calculation unit 34 calculates the displacement from the time series data of the acceleration detected by the acceleration sensor of the detector 27, and obtains the maximum value Am2 of the amplitude of the calculated displacement. The calculation unit 34 calculates a displacement from time series data of the acceleration detected by the acceleration sensor of the detector 28, and obtains the maximum amplitude Am3 of the calculated displacement. The calculation unit 34 calculates a displacement from time series data of the acceleration detected by the acceleration sensor of the detector 29, and obtains the maximum amplitude Am4 of the calculated displacement. Then, the calculation unit 34 calculates the degree of abnormality from the calculated maximum values Am1 to Am4 (S106).

Next, the display control unit 35 displays the result calculated by the calculation unit 34 on the display 31 (S107). Fig. 7 is a diagram showing a display example of the calculation result. Fig. 7 shows an example in which the inspection terminal 30 is a tablet type terminal. The check terminal 30 may also be a PC type terminal. The inspection terminal 30 may be a maintenance-dedicated terminal carried by a maintenance worker. Fig. 7 shows an example in which the display control unit 35 graphically displays the degree of abnormality calculated by the calculation unit 34 on the display 31. The maintenance person can easily grasp the abnormality related to the guide member by viewing the content displayed on the display 31.

Next, the maintenance person removes the detectors 26 to 29 from the inner wall of the car 1 (S108). The step of detaching the detectors 26 to 29 from the inner wall of the car 1 may be performed as needed after the process of S103 is completed. For example, the maintenance worker may remove the detectors 26 to 29 from the inner wall of the car 1 immediately after the car 1 stops in S104. The normal service of the elevator is restarted after the detectors 26-29 are detached from the inner wall of the elevator car 1.

In the example shown in the present embodiment, the detectors 26 to 29 are attached to the inner wall of the car 1, whereby it is possible to easily check whether or not abnormal vibration is generated by the guide member of the car 1. Therefore, even in the conventional elevator apparatus, it is possible to easily grasp an abnormality related to the guide member. In addition, the maintenance person does not need to climb onto the car 1 or enter the pit of the hoistway 3 when performing the above-described inspection. Therefore, the time required for the inspection can be shortened.

Other functions that can be employed by the inspection device 25 will be described below. The inspection device 25 may adopt a combination of a plurality of functions described below.

For example, the calculation unit 34 may calculate the degree of abnormality associated with the guide member of the car 1 based on the vibration detected by each of the detectors 26 to 29 during the period in which the car 1 moves at a constant speed. That is, the calculation unit 34 does not calculate the abnormality degree using the vibration detected at the time of acceleration and deceleration of the car 1. For example, the hoisting machine 5 includes an encoder (not shown). The encoder outputs a rotation signal corresponding to the rotation direction and rotation angle of the drive sheave 6. The inspection terminal 30 obtains the rotation signal output from the encoder from the control device 7.

For example, as shown in fig. 3, the inspection terminal 30 further includes a constant speed detection unit 37. The constant speed detection unit 37 detects that the car 1 moves at a constant speed. For example, the constant speed detection unit 37 detects that the car 1 moves at a constant speed based on a rotation signal from an encoder of the hoisting machine 5. When the inspection terminal 30 can directly acquire a signal indicating that the car 1 is moving at a constant speed from the control device 7, the constant speed detection unit 37 may perform detection based on the signal.

The constant speed detection unit 37 may detect the acceleration by an acceleration sensor provided in any of the detectors 26 to 29. For example, the constant speed detection unit 37 acquires time series data of the speed by time-integrating time series data of the acceleration in the vertical direction detected by the acceleration sensor of the detector 26. The constant speed detection unit 37 detects that the car 1 moves at a constant speed based on the acquired time series data of the speed.

When the constant speed detection unit 37 detects that the car 1 is moving at a constant speed, the constant speed signal is stored in the storage unit 33 in association with data of the vibration detected by the detectors 26 to 29. The constant speed signal is a signal indicating that the car 1 is moving at a constant speed. Fig. 8 is a diagram showing an example of data stored in the storage unit 33. In the example shown in fig. 8, the vibration data from time t1 to time t2 is stored in association with the constant speed signal. The calculation unit 34 calculates the degree of abnormality associated with the guide member of the car 1 based on the vibration detected by each of the detectors 26 to 29 when the constant speed detection unit 37 detects that the car 1 is moving at a constant speed. For example, in S105, the calculation unit 34 extracts only the vibration data associated with the constant speed signal from the storage unit 33, and calculates the maximum value of the amplitude.

As another example, the operation command unit 36 may transmit a control signal that also specifies the speed of the car 1 to the control device 7. For example, in S102, the operation command unit 36 transmits a control signal for starting the movement of the car 1 at a speed slower than the rated speed to the control device 7. The car 1 may be moved at the rated speed in the first inspection, and then, when the movement of the car 1 is limited to a specific range and the re-inspection is performed, a control signal that specifies the speed of the car 1 may be transmitted to the control device 7.

As another example, as shown in fig. 3, the inspection terminal 30 may further include a position detection unit 38 and a data conversion unit 39. The position detecting unit 38 detects the position of the car 1. In the example shown in the present embodiment, the car 1 moves only up and down. Therefore, the position of the car 1 is synonymous with the height of the car 1.

The position detecting unit 38 detects the position of the car 1 using, for example, a rotation signal from an encoder of the hoisting machine 5. When the inspection terminal 30 can directly acquire a signal indicating the position of the car 1 from the control device 7, the position detection unit 38 may perform detection based on the signal. The position detector 38 may detect the position by an acceleration sensor provided in any of the detectors 26 to 29. For example, the position detector 38 obtains time series data of the velocity by time-integrating time series data of the acceleration in the vertical direction detected by the acceleration sensor of the detector 26. The position detecting unit 38 detects the position of the car 1 based on the acquired time series data of the speed.

The data conversion unit 39 converts time series data of the vibrations detected by the detectors 26 to 29 into data on the position of the guide rail. The "guide rail position" indicates a height from a certain height as a reference. For example, the lower end of the guide rail 9 is used as a height reference. The position of the car 1 stopped at the lowermost floor can also be used as a reference for the height. In the following, the rail position is also referred to as "track position". The data conversion unit 39 performs data conversion based on the position of the car 1 detected by the position detection unit 38 and the installation distance H1 between the

guide devices

17 and 18 disposed above and below the car. The information of the interval H1 is stored in the storage unit 33 in advance.

Fig. 9 is a diagram for explaining the function of the data conversion unit 39. Fig. 9A shows a state in which the car 1 is disposed at a certain position. Fig. 9B shows a state in which the car 1 has moved upward by the interval H1 from the state shown in fig. 9A. As described above, the detector 26 is disposed in accordance with the position of the guide device 17. The detector 28 is arranged in accordance with the position of the guide 19. The vibration detected by the detector 26 in the state shown in fig. 9A is stored in the storage unit 33 as the vibration at the track position P1. The vibration detected by the detector 28 in the state shown in fig. 9A is stored in the storage unit 33 as the vibration at the track position P1.

The detector 27 is disposed in accordance with the position of the guide device 18. The detector 29 is disposed in accordance with the position of the guide 20. Therefore, the vibration detected by the detector 27 in the state shown in fig. 9A is stored in the storage unit 33 as the vibration at the track position P2. The track position P2 is a position lower than the track position P1 by the amount of the interval H1. The vibration detected by the detector 29 in the state shown in fig. 9A is stored in the storage unit 33 as the vibration at the track position P2.

The guide 17 shown in fig. 9A and the guide 18 shown in fig. 9B are arranged at the same height. Therefore, the vibration detected by the detector 27 in the state shown in fig. 9B is stored in the storage unit 33 as the vibration at the track position P1. The vibration detected by the detector 29 in the state shown in fig. 9B is stored in the storage unit 33 as the vibration at the track position P1. Further, the vibration detected by the detector 26 in the state shown in fig. 9B is stored in the storage unit 33 as the vibration at the track position P3. The track position P3 is a position higher than the track position P1 by the interval H1. The vibration detected by the detector 28 in the state shown in fig. 9B is stored in the storage unit 33 as the vibration at the track position P3. Fig. 10 is a diagram showing an example of data stored in the storage unit 33. Fig. 10A shows data before conversion by the data conversion section 39. Fig. 10B shows data after conversion by the data conversion section 39.

In the present embodiment, an example in which the inspection device 25 includes the same number of detectors as the number of guide devices included in the car 1 is described. An example in which the inspection device 25 includes only a smaller number of detectors than the number of guide devices included in the car 1 will be described below. For example, in the inspection apparatus 25 shown in fig. 3, the following example is included in the case where 1 detector 29 has failed. The inspection device 25 may include only 1 detector. In the following, an example in which the inspection device 25 includes the inspection terminal 30 and the two

detectors

26 and 27 will be described.

Fig. 11 is a flowchart showing another example of the inspection method using the inspection device 25. The maintenance person first mounts the

detectors

26 and 27 to the car 1 (S201). Fig. 12 is a diagram showing an example in which the

detectors

26 and 27 are mounted to the car 1. Fig. 12 is a view corresponding to fig. 5. In S201, the serviceman attaches the detector 26 to the upper portion of the inner wall 13a in accordance with the position of the guide device 17. The maintenance worker attaches the detector 27 to the lower portion of the inner wall 13a in accordance with the position of the guide device 18.

Next, the maintenance person starts movement of the car 1 (S202). The step shown in S202 is the same as the step shown in S102. While the car is moving, the inspection terminal 30 acquires time series data of the vibrations detected by the detectors 26 and 27 (S203). The time series data of the vibration acquired in step S203 is stored in the storage unit 33 (S204). Fig. 13 is a diagram for explaining the function of the inspection device 25. In the example shown in fig. 13, in S204, the information of the position detected by the position detecting portion 38 is stored in the storage portion 33 in association with the time-series data of the vibration. After that, the car 1 stops (S205).

Next, the maintenance person mounts the

detectors

26 and 27 at positions different from the positions mounted in S201 (S206). Fig. 14 is a diagram showing an example in which the

detectors

26 and 27 are mounted to the car 1. Fig. 14 corresponds to fig. 5. In S206, the serviceman attaches the detector 26 to the upper portion of the inner wall 14a in accordance with the position of the guide device 19. The maintenance worker attaches the detector 27 to the lower portion of the inner wall 14a in accordance with the position of the guide device 20.

Next, the maintenance person starts movement of the car 1 (S207). The step shown in S207 is the same as the step shown in S102. For example, the position where the car 1 starts moving in S207 is the same as the position where the car 1 starts moving in S202. While the car is moving, the inspection terminal 30 acquires time series data of the vibrations detected by the detectors 26 and 27 (S208). The time series data of the vibration acquired in step S208 is stored in the storage unit 33 (S209). In the example shown in fig. 13, in S209, the information of the position detected by the position detecting unit 38 and the time-series data of the vibration are stored in the storage unit 33 in association with each other. After that, the car 1 stops (S210).

Next, the calculation portion 34 calculates the degree of abnormality associated with the guide member of the car 1 from the vibration detected by each of the

detectors

26 and 27 in S203 and the vibration detected by each of the

detectors

26 and 27 in S208. As an example, the calculation unit 34 first integrates the time series data of the vibration stored in the storage unit 33 in S204 and the time series data of the vibration stored in the storage unit 33 in S209 based on the position information of the car 1 (S211).

The steps shown in S212 to S215 are the same as those shown in S105 to S108. For example, the maintenance person removes the

detectors

26 and 27 from the inner wall 14a of the car 1 in S215. The step of removing the

detectors

26 and 27 from the inner wall of the car 1 may be performed as needed after the end of the processing in S208. For example, the maintenance person may remove the

detectors

26 and 27 from the inner wall of the car 1 immediately after the car 1 stops in S210. The normal service of the elevator is resumed after the

detectors

26 and 27 have been detached from the inner wall of the car 1.

In addition, "UL" shown in fig. 13 means that the detector 26 corresponds to the guide device 17 disposed on the upper left when the car 1 is viewed from the landing side. The maintenance worker may attach the detector 26 to the upper portion of the inner wall 13a in S201 and then input information indicating that the detector 26 corresponds to the guide device 17 from the input device 32. The information input from the input device 32 is stored in the storage unit 33 in association with the time-series data of the vibration detected by the detector 26 in S203. "LL" means that the detector 26 corresponds to the guide device 18 disposed at the lower left. The maintenance person may attach the detector 27 to the lower portion of the inner wall 13a in S201 and then input information indicating that the detector 26 corresponds to the guide device 18 from the input device 32. The information input from the input device 32 is stored in the storage unit 33 in association with the time-series data of the vibration detected by the detector 27 in S203.

Similarly, "UR" shown in fig. 13 means that the detector 26 corresponds to the guide device 19 disposed on the upper right when the car 1 is viewed from the landing side. The maintenance person may attach the detector 26 to the upper portion of the inner wall 14a in S206 and then input information indicating that the detector 26 corresponds to the guide device 19 from the input device 32. The information input from the input device 32 is stored in the storage unit 33 in association with the time-series data of the vibration detected by the detector 26 in S208. "LR" means that the detector 27 corresponds to the guide device 20 disposed at the lower right. The maintenance person may attach the detector 27 to the lower portion of the inner wall 14a in S206 and then input information indicating that the detector 27 corresponds to the guide device 20 from the input device 32. The information input from the input device 32 is stored in the storage unit 33 in association with the time-series data of the vibration detected by the detector 27 in S208.

As another example, as shown in fig. 3, the inspection terminal 30 may further include a feature amount calculation unit 40 and a determination unit 41. Fig. 15 is a flowchart showing an example of the operation of the inspection terminal 30. For example, the processes shown in S301 to S304 are performed on each piece of time-series data of the vibrations stored in the storage unit 33.

The feature amount calculation unit 40 calculates a feature amount of the attenuation waveform. Fig. 16 is a diagram for explaining the function of the feature value calculating unit 40. For example, the feature value calculation unit 40 specifies a plurality of vibration peak values, that is, maximum amplitudes, from the time series data of the vibrations detected by the detector 26 (S301). Then, the feature amount calculation unit 40 extracts the damped vibration waveform following the determined maximum amplitude (S302). Fig. 16A shows an example in which in S302, the feature value calculation unit 40 extracts the damped vibration waveform WF1 following the maximum amplitude K1 and the damped vibration waveform WF2 following the maximum amplitude K2. Fig. 16B shows an example in which in S302, the feature value calculation unit 40 extracts the damped vibration waveform WF3 following the maximum amplitude K3 and the damped vibration waveform WF4 following the maximum amplitude K4.

Next, the feature amount calculation unit 40 calculates the feature amount of the extracted damped vibration waveform (S303). In the example shown in fig. 16A, the feature amount calculation unit 40 calculates the feature amount of the damped vibration waveform WF1 and the feature amount of the damped vibration waveform WF 2. For example, the feature amount calculation unit 40 calculates the vibration frequency of the damped vibration waveform as the feature amount. The feature value calculation unit 40 may calculate a damping time constant of the damped vibration waveform as the feature value. The feature amount calculation unit 40 may calculate a damping constant for damping the vibration waveform as the feature amount.

The determination unit 41 determines whether or not the guide device having generated a certain maximum amplitude is the same as the guide device having generated another maximum amplitude (S304). The determination unit 41 performs determination based on the feature values of the damped vibration waveform WF1 and the feature values of the damped vibration waveform WF2 calculated by the feature value calculation unit 40.

Fig. 17 is a diagram for explaining the function of the determination unit 41. Fig. 17 shows an example in which the step 9a and the step 9b are formed in the guide rail 9. Fig. 17B shows a state in which the car 1 moves upward from the state shown in fig. 17A.

For example, in the time series data of the vibration detected by the detector 26, the maximum amplitude K1 appears at the timing when the guide device 17 passes the step 9 a. In the time series data of the vibration detected by the detector 26, the maximum amplitude K2 appears at the time when the guide device 17 passes the step 9 b. If the guide device that generates the maximum amplitude K1 is the same as the guide device that generates the maximum amplitude K2, the characteristic amount of the damped vibration waveform WF1 and the characteristic amount of the damped vibration waveform WF2 have the same value. Therefore, if the difference between the characteristic amount of the damped vibration waveform WF1 and the characteristic amount of the damped vibration waveform WF2 is within the allowable range, the determination unit 41 determines that the guide device having the maximum amplitude K1 is the same as the guide device having the maximum amplitude K2.

On the other hand, in the time series data of the vibration detected by the detector 26, the maximum amplitude K3 appears at the time when the guide device 17 passes the step 9 a. In the time series data of the vibration detected by the detector 26, the maximum amplitude K4 appears at the time when the guide device 18 passes the step 9 a. When the guide device that generates the maximum amplitude K3 is different from the guide device that generates the maximum amplitude K4, the characteristic amount of the damped vibration waveform WF3 and the characteristic amount of the damped vibration waveform WF4 do not have the same value. Therefore, when the difference between the characteristic amount of the damped vibration waveform WF3 and the characteristic amount of the damped vibration waveform WF4 is out of the allowable range, the determination unit 41 determines that the guide device having the maximum amplitude K3 is different from the guide device having the maximum amplitude K4.

The determination unit 41 may perform the determination by using a table of feature values registered in advance. The determination unit 41 may perform the determination by using a feature value obtained from a parameter of a device provided in the car 1.

In the present embodiment, reference numerals 33 to 41 denote functions of the inspection terminal 30. Fig. 18 is a diagram showing an example of hardware resources of the inspection terminal 30. The inspection terminal 30 includes, as hardware resources, a processing circuit 50 including, for example, a processor 51 and a memory 52. The function of the storage unit 33 is realized by the memory 52. The memory 52 is, for example, a semiconductor memory. The memory 52 may not be a semiconductor memory. The inspection terminal 30 realizes the functions of the respective parts shown by reference numerals 34 to 41 by executing the program stored in the memory 52 by the processor 51.

Fig. 19 is a diagram showing another example of the hardware resources of the inspection terminal 30. In the example shown in fig. 19, the inspection terminal 30 includes a processing circuit 50 including, for example, a processor 51, a memory 52, and dedicated hardware 53. Fig. 19 shows an example in which a part of the functions of the inspection terminal 30 is realized by dedicated hardware 53. All the functions of the check terminal 30 may be realized by the dedicated hardware 53. The dedicated hardware 53 may be a single Circuit, a composite Circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination thereof.

Industrial applicability

The present invention can be used for inspection of an elevator apparatus.

Description of the reference symbols

1: a car; 2: a counterweight; 3: a hoistway; 4: a main rope; 5: a traction machine; 6: a drive sheave; 7: a control device; 8: a machine room; 9-10: a guide rail; 11: a car frame; 12: a floor; 13: a wall; 13 a: an inner wall; 14: a wall; 14 a: an inner wall; 15: a ceiling; 16: a car room; 17-20: a guide device; 25: an inspection device; 26-29: a detector; 30: checking a terminal; 31: a display; 32: an input device; 33: a storage unit; 34: a calculation unit; 35: a display control unit; 36: an operation instruction unit; 37: a constant speed detection unit; 38: a position detection unit; 39: a data conversion unit; 40: a feature value calculation unit; 41: a determination unit; 50: a processing circuit; 51: a processor; 52: a memory; 53: dedicated hardware.

Claims

1. An inspection apparatus, comprising:

a plurality of detectors that are attachable to and detachable from an inner wall of a car of an elevator and detect vibration of the inner wall;

a 2 nd detection unit that detects a position of the car;

a conversion unit that converts time series data of the vibrations detected by the plurality of detectors into data on a position of the guide rail based on the position detected by the 2 nd detection unit and an installation interval between the 1 st guide device and the 2 nd guide device;

a calculation unit that calculates an abnormality degree associated with a guide member of the car based on the vibration detected by each of the plurality of detectors;

a display; and

a display control unit that displays the result calculated by the calculation unit on the display,

the 1 st guide device and the 2 nd guide device are provided to the car,

the 2 nd guide device is arranged below the 1 st guide device,

when the car moves, the 1 st guide device and the 2 nd guide device slide on the guide rail.

2. The inspection apparatus according to claim 1,

the calculation unit calculates the degree of abnormality from the maximum value of the amplitude of the vibration detected by each of the plurality of detectors.

3. The inspection apparatus according to claim 1 or 2,

the 2 nd detection means detects the position of the car based on information acquired from a control device that controls movement of the car.

4. The inspection apparatus according to claim 1 or 2,

at least one of the plurality of detectors is provided with an acceleration sensor,

the 2 nd detection means detects the position of the car based on the acceleration detected by the acceleration sensor.

5. The inspection apparatus according to claim 1 or 2,

the inspection device further includes an operation command unit that transmits a control signal for moving the car at a specific speed slower than a rated speed to a control device that controls movement of the car.