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CN-121990441-A - Elevator guide rail flatness abnormality detection, installation and maintenance judging method and device

CN121990441ACN 121990441 ACN121990441 ACN 121990441ACN-121990441-A

Abstract

The invention relates to an elevator guide rail flatness abnormality detection method and a corresponding installation and maintenance judgment method and device in the technical field of elevator safety detection. According to the elevator guide rail flatness abnormality detection method, by subtracting the P, D 1 、D 2 of any position of the guide rail to be detected from the target position parameter P 0 and the two target distances D 10 and D 20 respectively, and then taking absolute value operation, corresponding deviation is obtained, and whether the actual state of the position is the flatness abnormality of the guide rail to be detected caused by the factors of the guide rail to be detected can be directly judged by comparing the deviation with a preset threshold value. The method can directly reflect the specific state of the flatness of the elevator guide rail through multiple groups of data acquisition and operation, and can accurately distinguish the guide rail state into serious deformation, normal or local abnormal protrusion, thereby avoiding complex operation of manually checking the data.

Inventors

  • HONG WEI
  • SHI XIAHUI
  • RUAN YIHUI
  • LU JIASHUN
  • LIU JIAN

Assignees

  • 江苏省特种设备安全监督检验研究院

Dates

Publication Date
20260508
Application Date
20260212

Claims (10)

  1. 1. The elevator guide rail flatness abnormality detection method is characterized by comprising the following steps: The elevator guide rail flatness abnormality detection device comprises a power module for walking on an elevator guide rail, a detection platform for detecting whether flatness abnormality exists in the guide rail to be detected due to factors of the power module, two groups of distance sensors for collecting distances D 1 and D 2 from working surfaces on two sides of the same height of the guide rail to be detected to side walls of a shaft on the same side respectively, a position sensitive detector for receiving laser emitted by a laser emitter arranged on a top plate of the elevator shaft and perpendicular to a horizontal plane, and an intersection point position parameter P of laser projected on the position sensitive detector; Calculating a position parameter deviation delta P and two distance deviations delta D 1 and delta D 2 according to P, D 1 、D 2 and the target position parameter P 0 and the two target distances D 10 and D 20 ; ; When Δp > P max and Δd 1 >D 1max and Δd 2 >D 2max , it is determined that the rail to be tested has abnormal flatness due to its own factors, where P max is the maximum allowable deviation range of the flatness of the rail, and D 1max 、D 2max is the maximum allowable deviation range of the flatness of the working surfaces at both sides.
  2. 2. The elevator guide rail flatness abnormality detection method according to claim 1, characterized in that the elevator guide rail flatness abnormality detection method further comprises: And when the delta P is less than or equal to P max , the delta D 1 ≤D 1max and the delta D 2 ≤D 2max , judging that the guide rail to be tested has no evenness abnormality.
  3. 3. The elevator guide rail flatness abnormality detection method according to claim 1, characterized in that the elevator guide rail flatness abnormality detection method further comprises: And when one or only two of the delta P and delta D 1 、ΔD 2 are larger than the corresponding threshold value, judging that the flatness of the guide rail to be tested is abnormal caused by non-self factors.
  4. 4. The elevator guide rail flatness abnormality detection method according to claim 1, characterized in that the elevator guide rail flatness abnormality detection method further comprises: And carrying out elevator guide rail flatness abnormal retest at any other positions of the guide rail to be tested, if retest results are consistent, judging that the guide rail to be tested has flatness abnormality caused by self factors, and if retest results are inconsistent, checking P, D 1 、D 2 data validity.
  5. 5. The method for detecting abnormal flatness of elevator guide rails according to claim 1, wherein the value of P max is determined according to the maximum allowable deviation of flatness of guide rails in elevator safety specifications.
  6. 6. The method for detecting abnormal flatness of elevator guide rails according to claim 1, wherein the values of D 1max and D 2max are determined according to allowable tolerances of the mounting flatness of the guide rail working surface.
  7. 7. The method for judging the maintenance need for the abnormal flatness of the elevator guide rail is characterized by comprising the following steps of: When the flatness abnormality detection method for the elevator guide rail according to any one of claims 1 to 6 is adopted to judge that the flatness abnormality caused by the self factor exists in the guide rail to be detected, the guide rail to be detected is judged to need immediate maintenance.
  8. 8. The method for judging the abnormal installation of the elevator guide rail is characterized by comprising the following steps: The elevator guide rail flatness abnormality detection method according to any one of claims 1 to 6 is used to determine that there is Δp > P max and Δd 1 >D 1max and Δd 2 >D 2max , or that one or both of Δp and Δd 1 、ΔD 2 are greater than their corresponding thresholds after installation of the elevator guide rail, and that there is an abnormality in guide rail installation perpendicularity, requiring reinstallation.
  9. 9. An elevator guide rail flatness abnormality detection device, comprising: the detection platform is used for detecting whether the guide rail to be detected has abnormal flatness caused by self factors; The elevator guide rail flatness detection system is characterized in that the elevator guide rail flatness detection method according to any one of claims 1 to 6 is adopted by the detection platform to detect whether the guide rail to be detected has flatness abnormality caused by self factors.
  10. 10. The elevator guide rail flatness abnormality detection device according to claim 9, further comprising an alarm module, wherein the detection platform starts the alarm module to alarm when it is determined that the guide rail to be detected has flatness abnormality due to its own factors, and the guide rail to be detected needs to be overhauled immediately.

Description

Elevator guide rail flatness abnormality detection, installation and maintenance judging method and device Technical Field The invention relates to an elevator guide rail abnormality detection method and a corresponding installation and maintenance judgment method and device in the technical field of elevator safety detection, in particular to an elevator guide rail flatness abnormality detection method and a corresponding installation and maintenance judgment method and device. Background With the development of industry and science and technology, as robots have the advantages of high automation, accuracy, repeatability and safety, the robots are widely applied to various scenes to replace manual execution of troublesome and dangerous tasks, wherein parameters such as flatness of elevator guide rails and the like can be automatically measured through a wall climbing robot system, and potential safety hazards such as insufficient illumination, limited space and the like in manual measurement are avoided; However, in the actual application process of the wall climbing robot, external environmental factors still exist, so that interference items exist in detected data, and therefore, in the prior art, the laser detector and the measuring method for measuring the flatness of the elevator guide rail disclosed in the Chinese patent publication No. CN119573668A comprise a laser ranging vehicle and a light spot detecting vehicle, a laser ranging sensor, a speed reducing motor, a magnetic wheel and an auxiliary magnetic wheel, wherein the detection end of the laser ranging sensor is arranged at the front part of the laser ranging vehicle, the detection end of the laser ranging sensor faces the direction deviating from the laser ranging vehicle, the speed reducing motor is positioned at the bottom of the device, the two magnetic wheels form vertical included angles, the speed reducing motor is only connected with the magnetic wheel, and an inclination sensor is vertically arranged at the right rear part of the laser ranging vehicle, and obstacle avoidance sensors are arranged at the front end and the rear end of the laser ranging vehicle and extend out of a region. The device is used for detecting parameters such as the flatness of the elevator guide rail, and the detection mode is only measured by the laser ranging car, the spot detection car and other parts, when the protrusions are locally arranged on the elevator guide rail, abnormal fluctuation of the parameters received by the measuring equipment can be caused, the fluctuation caused by the deviation of the flatness of the fluctuation and the guide rail cannot be distinguished through single data, and the interference can be eliminated only through subsequent manual rechecking, so that the state of the elevator guide rail and whether maintenance is needed can not be accurately judged. Disclosure of Invention (1) Technical problem to be solved The invention provides an elevator guide rail flatness abnormality detection method and a corresponding maintenance judgment method and device, and aims to solve the technical problem that whether the flatness abnormality of the guide rail is caused by self factors is difficult to directly judge by the existing elevator guide rail flatness abnormality detection method. (2) Technical proposal The invention provides an elevator guide rail flatness abnormality detection method, which comprises providing an elevator guide rail flatness abnormality detection device, wherein the elevator guide rail flatness abnormality detection device comprises a power module for walking on an elevator guide rail, a detection platform for detecting whether flatness abnormality exists on a guide rail to be detected due to factors, two groups of distance sensors for collecting distances D 1 and D 2 between working surfaces on two sides of the same height of the guide rail to be detected and side walls of a same side well respectively, a position sensitive detector for receiving laser emitted by a laser emitter arranged at one end of the elevator well and perpendicular to a horizontal plane, and an intersection point position parameter P for collecting laser projection on the position sensitive detector; Based on P, D 1、D2 and the target position parameter P 0, the two target distances D 10 and D 20, a position parameter deviation Δp and two distance deviations Δd 1 and Δd 2 are calculated: ; When Δp > P max and Δd 1>D1max and Δd 2>D2max, it is determined that the rail to be tested has abnormal flatness due to its own factors, where P max is the maximum allowable deviation range of the flatness of the rail, and D 1max、D2max is the maximum allowable deviation range of the flatness of the working surfaces at both sides. As a further improvement of the scheme, the elevator guide rail flatness abnormality detection method further comprises the step of judging that the guide rail to be detected is free of flatness abnormality when deltaP is smaller t