Elevator vibration diagnosis method and system

Abstract

The invention discloses an elevator vibration diagnosis method and system.The elevator vibration diagnosis method comprises the steps that a vibration curve is generated according to vibration data; according to the vibration curve, main vibration points are determined, and the main vibration points comprise time points; and according to the vibration curve, vibration source components under the main vibration points are determined, and the vibration source components are components causing elevator vibration. According to the method, the vibration curve generated by the vibration data is analyzed, the main vibration point is firstly determined, and then the vibration source component under the main vibration point is determined, so that the traditional tedious process of troubleshooting one by one is simplified, the troubleshooting range is narrowed in the initial step of determining the main vibration point, and the diagnosis efficiency is remarkably improved; compared with the prior art, a large amount of time does not need to be consumed for checking all parts one by one, and the vibration source parts in the elevator running process can be effectively recognized and rapidly positioned.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator vibration diagnosis, and in particular to an elevator vibration diagnosis method and system. Background Art

[0002] As people's quality of life continues to rise, the comfort and safety standards for elevators are becoming increasingly stringent, especially in key places such as high-end residential areas and hospitals. This demand is particularly urgent. Given the nature of elevators as complex mechanical systems, they are composed of many rotating parts working together. Any abnormal operation of a single rotating part may induce vibration problems in elevator operation. In addition, as large-scale equipment, elevators have extremely high precision requirements for on-site installation. Slight deviations during the installation process may also aggravate the vibration of elevator operation. Therefore, the causes of elevator vibration are diverse and complex, which brings challenges to the troubleshooting of vibration problems.

[0003] At present, the industry mainly relies on professional equipment to accurately collect the X, Y, and Z axis acceleration data of the elevator in operation in the car, and then use FFT (Fast Fourier Transform) spectrum analysis technology to identify the basic vibration frequency. Through the rotation analysis of each rotating component, on this basis, combined with rich practical experience, the scope is gradually narrowed, and the vibration source is checked and located one by one. This process is complicated and time-consuming, and it is difficult to effectively identify and quickly locate the vibration source components in the operation of the elevator. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide an elevator vibration diagnosis method and system, which can effectively identify and quickly locate vibration source components in elevator operation.

[0005] In order to solve the above technical problems, the present invention is implemented according to the following scheme:

[0006] A method for diagnosing elevator vibration is provided, comprising:

[0007] Generate vibration curve according to vibration data;

[0008] Determining main vibration points according to the vibration curve, wherein the main vibration points include time points;

[0009] According to the vibration curve, the vibration source component under the main vibration point is determined, and the vibration source component is a component that causes the elevator to vibrate.

[0010] Compared with the prior art, the present invention provides an elevator vibration diagnosis method with the following beneficial effects: by analyzing the vibration curve generated by the vibration data, the main vibration point is first determined, and then the vibration source component under the main vibration point is determined, which not only simplifies the tedious process of traditional one-by-one inspection, but also narrows the inspection scope in the initial step of determining the main vibration point, thereby significantly improving the diagnosis efficiency; compared with the prior art, there is no need to spend a lot of time to check each component one by one, but the vibration source components in the elevator operation can be effectively identified and quickly located.

[0011] Optionally, the elevator includes a plurality of rotating parts, and the vibration data includes three-axis accelerations of the rotating parts when the elevator is running.

[0012] Optionally, determining the main vibration point according to the vibration curve includes:

[0013] Determine a plurality of vibration points to be processed of the vibration curve, wherein the vibration points to be processed include time points at which the vibration curve fluctuates;

[0014] The main vibration point is determined from a plurality of vibration points to be processed.

[0015] Optionally, determining the main vibration point from a plurality of vibration points to be processed includes:

[0016] Determine vibration signals of a plurality of vibration points to be processed respectively on the vibration curve;

[0017] Performing peak-to-peak value calculation on vibration signals of multiple vibration points to be processed, and determining amplitudes corresponding to the multiple vibration points to be processed respectively;

[0018] According to the amplitudes corresponding to the multiple vibration points to be processed, all the vibration points to be processed are sorted in descending order according to the amplitudes;

[0019] The first preset number of vibration points to be processed after sorting are selected as main vibration points, and the number of the main vibration points is the same as the preset number.

[0020] Optionally, determining the vibration source component at the main vibration point according to the vibration curve includes:

[0021] Determining vibration signals of a plurality of rotating parts under the main vibration point;

[0022] According to the vibration signals of the plurality of rotating parts, the vibration source part is determined from among the plurality of rotating parts. Optionally, according to the vibration signals of the plurality of rotating parts, the vibration source part is determined from among the plurality of rotating parts, comprising:

[0023] Determine the start time of the vibration signal, wherein the start time is the time when the vibration signal appears;

[0024] comparing vibration signals of a plurality of rotating parts based on a start time of the vibration signals;

[0025] The rotating component corresponding to the vibration signal with the earliest starting time is determined as the vibration source component.

[0026] Optionally, the determining the vibration source component among the plurality of rotating components according to the vibration signals of the plurality of rotating components further includes:

[0027] When there are vibration signals with the same starting time, determining the vibration amplitudes corresponding to the vibration signals with the same starting time;

[0028] The rotating component corresponding to the vibration signal with the largest vibration amplitude is determined as the vibration source component.

[0029] Optionally, before generating a vibration curve according to the vibration data, the elevator vibration diagnosis method further includes:

[0030] Installing vibration collectors on multiple rotating parts, wherein the vibration collectors are used to obtain the vibration data;

[0031] The vibration collector is timed so that the reference times of the vibration collectors of the plurality of rotating parts are the same.

[0032] An elevator vibration diagnosis system is also provided, which is applied to the above-mentioned elevator vibration diagnosis method, comprising:

[0033] A vibration collector, used to obtain vibration data;

[0034] A controller, configured to determine a vibration source component according to the vibration data;

[0035] A data transmission module, used to transmit the vibration data acquired by the vibration collector to a controller;

[0036] Visualization module, used to display vibration curves and vibration source components.

[0037] Optionally, the controller includes:

[0038] The data receiving module is used to receive the vibration data transmitted by the data transmission module.

[0039] Data processing module, used to process vibration data:

[0040] Vibration analysis module, used to generate vibration curves and determine vibration source components;

[0041] The data storage module is used to store vibration data, vibration curves, and vibration source components. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a flow chart of the elevator vibration diagnosis method of the present invention;

[0043] Figure 2 A schematic diagram for determining the vibration source components for the present invention;

[0044] Figure 3 This is a block diagram of the elevator vibration diagnostic system of the present invention. DETAILED DESCRIPTION

[0045] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0046] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects, and do not have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0047] See also Figure 1 As shown, the present invention provides an elevator vibration diagnosis method, comprising:

[0048] S1: Generate a vibration curve based on the vibration data; wherein, the elevator includes multiple rotating parts, each rotating part is provided with a vibration collector, and when testing the vibration of the elevator, it is necessary to control the elevator to run one trip, that is, control the elevator to run from the bottom floor to the top floor; when the elevator is running, the vibration collector will collect the vibration data, and the vibration data includes the three-axis acceleration of the multiple rotating parts when the elevator is running, and the three-axis acceleration includes X-axis acceleration, Y-axis acceleration, and Z-axis acceleration.

[0049] Generate a vibration curve based on vibration data, that is, generate a vibration curve based on the three-axis acceleration of each rotating part. This process is a common technology in the current industry. It mainly uses a vibration collector to collect the three-axis acceleration of the elevator during normal operation, and generates an acceleration-time curve after fitting the acceleration data. It will not be described in detail here.

[0050] S2: According to the vibration curve, determine the main vibration points, including:

[0051] First, multiple vibration points to be processed are found in the vibration curve, and the vibration points to be processed include the time points where there are fluctuations in the vibration curve. During the normal operation of the elevator, if there is no vibration in the rotating parts of the elevator, then the vibration curve should be smooth. If there is vibration in the rotating parts of the elevator, there will be fluctuations in the vibration curve, that is, there is a vibration signal in the vibration curve, that is, the vibration points to be processed include the time points where there are fluctuations in the vibration curve, which are the time points corresponding to the vibration signals.

[0052] Then, the amplitudes of the vibration signals of the multiple vibration points to be processed on the vibration curve are determined, and the peak-to-peak value of the multiple vibration signals on the vibration curve is calculated by the PK-PK method (peak-to-peak method), and the amplitudes corresponding to the multiple vibration points to be processed are determined. According to the amplitudes corresponding to the multiple vibration points to be processed, all the vibration points to be processed are sorted in descending order according to the amplitude, that is, all the vibration points to be processed are sorted from large to small according to the amplitude, and finally the first preset number of vibration points to be processed after sorting are selected as the main vibration points, and the number of the main vibration points is the same as the preset number, wherein the main vibration points include time points.

[0053] Frequency and amplitude are the two major properties of vibration, and the evaluation of elevator vibration also starts from these two perspectives; elevator vibration will affect the comfort of the elevator. It is generally believed that vibration acceleration and its rate of change are the main factors that cause passengers to feel uncomfortable.

[0054] The national standard GB / T10058--2009 stipulates that the maximum peak-to-peak value of the passenger elevator car in the constant speed section on the Z axis should not be greater than 0.30m / s2, and the A95 value should not be greater than 0.20m / s2. The maximum peak-to-peak value of the horizontal (X-axis and Y-axis) vibration of the passenger during elevator operation should not be greater than 0.20m / s2, and the A95 value should not be greater than 0.15m / s2.

[0055] Generally speaking, the human body's response to vibration intensifies as the amplitude increases, and the frequency and direction of vibration also affect people's physiological responses. When taking an elevator, passengers usually stand on the floor of the car, and the vibration collector on the car side is also installed on the floor, so the vibration data on the car side is closest to the passenger experience. The first preset number ranked by amplitude will be processed first. The first preset number represents the time point with the largest amplitude at present, which has the greatest impact on the passenger's body feeling.

[0056] During the selection process, the number of main vibration points is determined according to actual needs, that is, the preset number is determined according to actual needs; assuming that the preset number is N, the first N vibration points to be processed corresponding to the largest amplitudes are selected as the main vibration points, which can be recorded as time point 1, time point 2, ..., time point N, where N is less than the number of vibration points to be processed.

[0057] S3: According to the vibration curve, determine the vibration source components under the main vibration points, including:

[0058] Determine the vibration signals of multiple rotating parts at each main vibration point, and then determine the vibration source component among the multiple rotating parts according to the vibration signals of the multiple rotating parts. The vibration source component is the component that causes the vibration of the elevator. In the process of determining the vibration source component, it is necessary to consider that at the same vibration point, the vibration signals of each rotating part correspond to the starting time and the vibration amplitude respectively.

[0059] First of all, it is necessary to consider the starting time corresponding to the vibration signals of each rotating component. Under the same main vibration point, if the starting times corresponding to the vibration signals of each rotating component are different, then the rotating component corresponding to the vibration signal that first fluctuates is taken as the vibration source component. This is because according to the law of vibration transmission, the propagation of vibration can be achieved through cutoff propagation. That is to say, when the first rotating component vibrates, the vibration of the rotating component will propagate to the remaining rotating components, causing the remaining rotating components to vibrate. Therefore, it is necessary to take the rotating component that first vibrates as the vibration source component, that is, to determine the rotating component corresponding to the vibration signal with the earliest starting time as the vibration source component.

[0060] See also Figure 2 As shown in the figure, at the same main vibration point, the vibration signals corresponding to the four rotating parts, namely the traction machine, guide wheel, traction wheel and rolling guide shoe, are respectively shown. The vibration signal corresponding to the traction wheel in the figure has the earliest starting time, that is, under the same vibration, the traction wheel vibrates the earliest. Therefore, at this main vibration point, the traction wheel is the vibration source component.

[0061] Secondly, we consider the vibration amplitude corresponding to the vibration signals of each rotating component. Under the same main vibration point, if the starting times corresponding to the vibration signals of the rotating components are the same, that is, at least two rotating components start to vibrate at the same time, then the FFT (Fast Fourier Transform) spectrum analysis technology is used to analyze the vibration amplitude of each rotating component, and the vibration amplitudes obtained by analysis are sorted from large to small, and the rotating component with the largest vibration amplitude is used as the vibration source component.

[0062] The vibration source component is the rotating component that first vibrates or has the largest vibration amplitude at each vibration point. After determining the vibration source component, the vibration source component that causes vibration during elevator operation can be effectively identified and quickly located, so that the elevator maintenance personnel can quickly determine the rotating components that need to be inspected, without gradually narrowing the inspection scope and inspecting the rotating components one by one, effectively ensuring the safety, comfort and reliability of the elevator.

[0063] Before executing step S1, the elevator vibration diagnosis method further includes:

[0064] Vibration collectors are installed on multiple rotating parts to obtain vibration data when the elevator is running. Before the elevator is running or the vibration collector obtains vibration data, the vibration collector needs to be calibrated to make the reference time of the vibration collectors of multiple rotating parts the same.

[0065] Each rotating component has an independent vibration collector, so the vibration data of each rotating component needs to be compared and analyzed on the same time axis, that is, it is necessary to ensure that the time axis of the vibration data collected by each rotating component is consistent, that is, it is necessary to correct the reference time of the vibration collector of each rotating component.

[0066] See also Figure 3 As shown, the present invention also provides an elevator vibration diagnosis system, which is applied to the elevator vibration diagnosis method, comprising:

[0067] The vibration collector is used to obtain vibration data. The vibration collector includes an X-axis acceleration sensor, a Y-axis acceleration sensor, and a Z-axis acceleration sensor to monitor the X-axis acceleration, Y-axis acceleration, and Z-axis acceleration of each rotating component in real time.

[0068] A controller is used to determine the vibration source components according to the vibration data; a data transmission module is used to transmit the vibration data obtained by the vibration collector to the controller; a visualization module is used to display the vibration curve and the vibration source components, and the elevator maintenance personnel can inspect the elevator through the displayed information.

[0069] The controller includes:

[0070] The data receiving module is used to receive the vibration data transmitted by the data transmission module.

[0071] Data processing module, used to process vibration data:

[0072] Vibration analysis module, used to generate vibration curves and determine vibration source components;

[0073] The data storage module is used to store vibration data, vibration curves, and vibration source components.

[0074] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An elevator vibration diagnosis method, characterized in that: include: Generate vibration curve based on vibration data; Determining main vibration points according to the vibration curve, wherein the main vibration points include time points; According to the vibration curve, the vibration source component under the main vibration point is determined, and the vibration source component is a component that causes the elevator to vibrate.

2. An elevator vibration diagnosis method according to claim 1, characterized in that: The elevator comprises a plurality of rotating parts, and the vibration data comprises three-axis accelerations of the rotating parts when the elevator is running.

3. The elevator vibration diagnosis method according to claim 1, characterized in that: Determining the main vibration point according to the vibration curve includes: Determine a plurality of vibration points to be processed of the vibration curve, wherein the vibration points to be processed include time points at which the vibration curve fluctuates; The main vibration point is determined from a plurality of vibration points to be processed.

4. An elevator vibration diagnosis method according to claim 3, characterized in that: The determining the main vibration point from a plurality of vibration points to be processed comprises: Determine vibration signals of a plurality of vibration points to be processed respectively on the vibration curve; Performing peak-to-peak value calculation on vibration signals of multiple vibration points to be processed, and determining amplitudes corresponding to the multiple vibration points to be processed respectively; According to the amplitudes corresponding to the multiple vibration points to be processed, all the vibration points to be processed are sorted in descending order according to the amplitudes; The first preset number of vibration points to be processed after sorting are selected as main vibration points, and the number of the main vibration points is the same as the preset number.

5. An elevator vibration diagnosis method according to claim 4, characterized in that: The step of determining the vibration source component at the main vibration point according to the vibration curve includes: Determining vibration signals of a plurality of rotating parts under the main vibration point; The vibration source component is determined from among the plurality of rotating components according to the vibration signals of the plurality of rotating components.

6. An elevator vibration diagnosis method according to claim 5, characterized in that: The step of determining the vibration source component among the plurality of rotating components according to the vibration signals of the plurality of rotating components comprises: Determine the start time of the vibration signal, where the start time is the time when the vibration signal appears; comparing vibration signals of a plurality of rotating parts based on a start time of the vibration signals; The rotating component corresponding to the vibration signal with the earliest starting time is determined as the vibration source component.

7. An elevator vibration diagnosis method according to claim 6, characterized in that: The step of determining the vibration source component from among the plurality of rotating components according to the vibration signals of the plurality of rotating components further comprises: When there are vibration signals with the same starting time, determining the vibration amplitudes corresponding to the vibration signals with the same starting time; The rotating component corresponding to the vibration signal with the largest vibration amplitude is determined as the vibration source component.

8. An elevator vibration diagnosis method according to claim 7, characterized in that: Before generating a vibration curve according to the vibration data, the elevator vibration diagnosis method further includes: Installing vibration collectors on multiple rotating parts, wherein the vibration collectors are used to obtain the vibration data; The vibration collector is timed so that the reference times of the vibration collectors of the plurality of rotating parts are the same.

9. An elevator vibration diagnosis system, applied to an elevator vibration diagnosis method as described in claims 1 to 8, characterized in that: include: A vibration collector, used to obtain vibration data; A controller, configured to determine a vibration source component according to the vibration data; A data transmission module, used to transmit the vibration data acquired by the vibration collector to a controller; Visualization module, used to display vibration curves and vibration source components.

10. An elevator vibration diagnosis system according to claim 9, characterized in that: The controller comprises: The data receiving module is used to receive the vibration data transmitted by the data transmission module. Data processing module, used to process vibration data: Vibration analysis module, used to generate vibration curves and determine vibration source components; The data storage module is used to store vibration data, vibration curves, and vibration source components.

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