Method for installing or repairing an elevator, and device for inspecting the installation or repair

Abstract

The invention relates to an improved method for installing or repairing an elevator door, having a first step, in which the installation or repair is carried out on the elevator door, and a second step, in which the installation or repair is inspected prior to starting up the elevator door for general use. In the second step, the elevator door is first opened and closed at least once while the vibration of the elevator door is measured. A vibration profile, in particular an average vibration profile, is then formed from the opening and / or closing processes. The vibration profile is then compared with at least one comparison value, and a signal to accept or reject the installation or repair for general use is output on the basis of the comparison.

Description

[0001] Method for installing or repairing an elevator and device for checking such installation or repair

[0002] The invention relates to a method for installing or repairing an elevator door, which comprises a testing method for evaluating the installation or repair.

[0003] Methods of this type are known from the prior art, which evaluate the quality of the installation or repair of an elevator door through expert observation. For example, EP 2 268 565 A1 discloses a method for identifying maintenance to be performed on an elevator door using recorded noises from successive openings and closings of the elevator door.

[0004] It is an object of the invention to provide an improved method of the type mentioned.

[0005] This object is achieved by a method according to claim 1 and a device according to claim 11. Advantageous embodiments are specified in the further dependent claims.

[0006] The method according to the invention is a method for installing or repairing an elevator door, comprising a first method step in which the installation or repair is carried out on the elevator door, and a second method step in which the installation or repair is checked before commissioning for general use. In the second method step, the elevator door is first opened and closed once or multiple times, in particular 2, 3, or 4 times, with the vibration of the elevator door being measured. A vibration profile, in particular an average vibration profile, is then generated from the opening and / or closing processes. The vibration profile is then compared with at least one comparison value. Depending on the comparison, a signal is output to accept or reject the installation or repair for general use.

[0007] The procedure can offer the advantage of objectively determining quality. The procedure can offer the advantage of avoiding errors caused by manual inspection. The procedure can offer the advantage of automatically transmitting the inspection results to a service center.

[0008] Commissioning for general use may mean ending the elevator's service mode for general passenger transport. Installation or repair prior to commissioning for general use may mean performing the installation or repair in the elevator's service module, where general passenger transport is not permitted.

[0009] Vibration signature is a data set that provides a measure of vibration over time or distance.

[0010] Preferably, the elevator door is opened and closed with measurement of the vibration of the elevator door until sufficient data for a vibration profile has been measured, so that a function of the measured data or the vibration profile, which in particular represents a data quality, exceeds or falls below a threshold value.

[0011] This function can, in particular, be a statistical function. Exceeding or falling below the threshold value indicates that the data quality is sufficient to perform the procedure with sufficient reliability.

[0012] This can have the advantage of consistently achieving a comparable quality of the process, so that the signals from the process are comparable at different elevator doors. This can have the advantage of making the process more reliable.

[0013] Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using a comparison with a predetermined reference profile.

[0014] Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using the evaluation of whether a threshold value is exceeded or undershot.

[0015] Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using the evaluation to determine whether at least one amplitude of the vibration profile exceeds or falls below a threshold value. Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using the evaluation to determine whether the at least one amplitude of the vibration profile periodically exceeds or falls below a threshold value.

[0016] Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using the detection of a specific frequency, in particular a natural frequency of the elevator door.

[0017] Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using a frequency analysis.

[0018] Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using a wavelet analysis.

[0019] Preferably, the comparison of the vibration profile with the at least one comparison value is carried out using pattern recognition.

[0020] The device according to the invention is a device for checking the installation or repair of an elevator door with a vibration sensor for measuring the vibration of the elevator door, with an activation device which is designed to initiate, after installation or repair, one or more opening and closing of the elevator door with the measurement of the vibration of the elevator door by the vibration sensor, with a collecting device which is designed to form a vibration profile from the measurement of the above-mentioned vibration, with a comparison device which is designed to carry out a comparison of the vibration profile with at least one comparison value, and with an output device,which is designed to output, depending on the comparison of the comparison device, a signal for accepting or rejecting the installation or repair of the elevator door before activation by the activation device, wherein the device is designed to carry out one of the aforementioned methods. Thus, the aforementioned advantages of the method can be implemented.

[0021] Further features of the invention are illustrated in the drawings. The advantages mentioned may also be realized for combinations of features in which they are not mentioned.

[0022] Overview of the drawings:

[0023] Embodiments of the invention are illustrated in the drawings and explained in more detail below. Like reference numerals in the individual figures denote corresponding elements. They show:

[0024] Fig. 1 Flowchart of the process

[0025] Fig. 2 Device for checking the installation / repair of the invention, as well as

[0026] Fig. 3 Device for checking the installation / repair gladly, the

[0027] Invention with cloud connection.

[0028] Detailed description of the drawing:

[0029] Fig. 1 shows a flowchart of method 10. The process begins with the installation or repair of the elevator door 11. This is the first method step 10. The first method step 10 is followed by the second method step 20.

[0030] In the second method step 20, the elevator door is first opened and closed, and the vibration of the elevator door 21 is measured. Measurement 21 can be performed using a vibration sensor located on the elevator door. The vibration sensor can also be located on the light grid of the elevator car.

[0031] After the measurement of an opening and closing process 21, a comparison 22 of the measured data with a comparison value 23 is carried out. If the comparison value 23 is not reached, a measurement of an opening and closing process 21 is carried out again and the measured data are linked with the previously measured data and the linked data are again compared with the comparison value 23. If the comparison value 23 is not reached, the process step 20 always starts again until the comparison shows that the comparison value 23 has been reached.

[0032] The data is then combined to form a vibration signature 24. The vibration signature 24 is then subjected to a comparison 25 with a reference vibration signature 26. If the comparison 25 reveals sufficient similarity between the vibration signature 24 and the reference vibration signature 26 as a function of one or more threshold values, the second method step outputs a signal for accepting the installation or repair 31. If the comparison 25 does not reveal sufficient similarity between the vibration signature and the reference vibration signature as a function of one or more threshold values, the second method step outputs a signal for rejecting the installation or repair 32.

[0033] The acceptance 31 and rejection 32 signals are transmitted wirelessly to a server via internet protocol. The server automatically informs the service technician or service company of the signal via a message over the internet.

[0034] Figure 2 shows a device 41 for checking, installing, or repairing an elevator door 42, which is designed here as a centrally opening sliding door. Vibration sensors 43 are arranged in the door area and can be used to measure vibrations of the elevator door 42 during opening and closing. They are connected to a collecting device 44, which is connected to the vibration sensors 43 (wirelessly or wired). The collecting device 44 collects the measurement data from the vibration sensors 43 and creates vibration profiles from this. A vibration profile corresponds, for example, to the temporal or spatial course of the amplitudes of the vibration generated during door movement. The vibration profiles can provide information about whether the movement of the elevator doors 42 is normal or whether, for example, there is a mechanical obstacle in the guide of the doors 42. For further evaluation, a comparison device 45 is provided which compares the recorded orCollected vibration profiles can be compared with reference vibration profiles. It is also conceivable that at least one representative comparison value is used to perform the comparison, such as an average value, a maximum value for the amplitudes, or the like. Two or more comparison values ​​can also be used.

[0035] This process, which corresponds to the second method step 20, is started by an activation device 46. After installation or repair, the user can use this to initiate the second method step 20, i.e., checking the installation or repair of the elevator door 42. The activation device 46 can also be connected to the elevator machine control 47 and, for example, use this to initiate the movement of the elevator doors 42 and control the vibration sensors 43. The activation device 46 starts at least one opening and closing process of the elevator door 42. It can also, in principle, initiate at least two opening and closing processes of the elevator door 42, for example, to improve the statistics of the measured values. It is conceivable that the user can select how many opening and closing processes are to be carried out in detail, or this is determined by comparison queries 22, 25 (cf.Figure 1).

[0036] In principle, the activation device 46 can be started manually from the outside by the user. It is also conceivable that the machine control system 47 automatically initiates this start of the activation device 46 after installation or repair (first method step). The activation device 46 can also be part of a mobile device (an app for a smartphone, tablet PC, or the like) that is connected to the machine control system 47 by the operating personnel during installation or repair, for example, or that directly accesses the door drive or the sensors 43.

[0037] Finally, the result of the comparison is further processed into a signal by the comparison device 45 with the aid of the output device 48. This signal can be forwarded to the machine control system 47. It can also be output to the user as a visual or acoustic signal. The signal can also be reported directly (or via the machine control system 47) to the activation device 46, so that at least one opening and closing process with vibration measurement can be activated / started if necessary.

[0038] The device 41 for inspecting, installing, or repairing an elevator door 42 can be an integral part of the elevator system. While it is conceivable to integrate the device 41 into the elevator car 49, it is generally more practical to install the device, possibly with the exception of the vibration sensors 43, outside the car 49, for example, for the machine control system 47. As shown below, individual components can also be completely separated:

[0039] Figure 3 shows a further option: The activation device 46 is designed as a mobile terminal that can communicate with the machine control 47 of the elevator device and exchange data with each other. Activation of the second method step then causes the activation device 46 via the machine control 47, i.e., the activation device 46 sends a command to the machine control 47 to open and close the elevator doors 42 and read the vibration sensors 43. The data is forwarded from the machine control 47 to the activation device 46 (or directly) to the cloud 50. The cloud 50 assumes the function of the collection device 44, the comparison device 45, and the output device 48, with which the result data is sent back to the activation device 46 or to the machine control 47.The advantage of evaluation via Cloud 50 is that the elevator device can be designed more compactly and a Cloud 50 can provide high-performance mainframe computers or computing systems.

[0040] List of reference symbols:

[0041] 10 First process step

[0042] 11 Installation or repair of the elevator door

[0043] 20 Second procedural step

[0044] 21 Opening and closing the door with vibration measurement

[0045] 22 Comparison

[0046] 23 Threshold

[0047] 24 Formation or output of the vibration profile

[0048] 25 Comparison of the vibration profile

[0049] 26 Comparison value

[0050] 31 Signal for acceptance of installation or repair

[0051] 32 Signal for rejection of installation or repair

[0052] 41 Device 41 for inspection and installation or repair

[0053] 42 Elevator door

[0054] 43 vibration sensors

[0055] 44 Collection facility

[0056] 45 Comparison device

[0057] 46 Activation device

[0058] 47 Machine control

[0059] 48 Output device

[0060] 49 elevator cabins

[0061] 50 Cloud

Claims

Claims:

1. Procedure for installing or repairing an elevator door - with the first process step (10): - Installation or repair of the elevator door (11) - and with the second process step (20) - to check the installation or repair before commissioning for general use: - opening and closing (21) of the lift door at least once, in particular 2, 3 or 4 times, with measurement of the vibration of the lift door, - Formation of a vibration profile from the opening and / or closing processes (21), - comparison (25) of the vibration profile with at least one comparison value (26), - issuing a signal for acceptance (31) or rejection (32) of the installation or repair for general use depending on the comparison.

2. Method according to claim 1, characterized in that - the opening and closing (21) of the elevator door with measurement of the vibration of the elevator door - occurs as often as - until sufficient data for a vibration profile have been measured so that a function of the measured data or the vibration profile, which in particular represents a data quality, exceeds or falls below a threshold value (23).

3. Method according to any preceding claim, characterized in that - the comparison (25) using - a comparison with a given reference profile is carried out.

4. Method according to any preceding claim, characterized in that - the comparison (22) is carried out using the evaluation, - whether a threshold value (23) is exceeded or undercut.

5. Method according to any preceding claim, characterized in that - the comparison (22, 25) is carried out using the evaluation, - whether at least one amplitude of the vibration profile exceeds or falls below a threshold value (23).

6. Method according to any preceding claim, characterized in that - the comparison (22, 25) is carried out using the evaluation, - whether the at least one amplitude of the vibration profile periodically exceeds or falls below a threshold value (23).

7. Method according to any preceding claim, characterized in that - the comparison (22, 25) using - the detection of a specific frequency, in particular a natural frequency of the elevator door.

8. Method according to any preceding claim, characterized in that - the comparison (22, 25) using - a frequency analysis is carried out.

9. Method according to any preceding claim, characterized in that - the comparison (22, 25) using - a wavelet analysis is carried out.

10. Method according to any preceding claim, characterized in that - the comparison (22, 25) using - a pattern recognition is carried out.

11. Device (41) for checking the installation or repair of an elevator door (42) - with a vibration sensor (43) for measuring the vibration of the lift door (42), - with an activation device (46) which is designed to - after installation or repair - to initiate at least one opening and closing of the lift door (42) by measuring the vibration of the lift door (42) by the vibration sensor (43) - with a collecting device (44) which is designed to - to create a vibration profile from the vibration measurement, - with a comparison device (45) which is designed to - to compare the vibration profile with at least one reference value, and - with an output device (48) which is designed to - depending on the comparison of the comparison device (45) - to issue a signal for acceptance or rejection of the installation or repair of the lift door (31, 32), characterized in that the device is designed to - to carry out a method according to one of the preceding claims.

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