An automatic straightening method for elevator guide rails based on expert database technology

Abstract

The invention discloses an automatic lift guide rail straightening method based on the expert database technology. The automatic lift guide rail straightening method based on the expert database technology comprises the steps that firstly, manual straightening success experience in the early stage is utilized to constitute an expert database; secondly, straightness information of a guide rail is collected, fitting of a straightness curve is conducted according to the collected data, data analysis is conducted on the fitted curve in a extreme value point traversal method so as to select press points as reference points; thirdly, unqualified points are found according to the guide rail straightness qualification index, and the final press point is determined from the press point reference points; fourthly, after the press point is readjusted and determined, according to the principle of span maximization, the positions of the supporting points are symmetrically determined on the two sides of the press point; and finally, the bending values and the spans of the press point are normalized, according to the normalized bending value and span of the pressing point, the corresponding press amount is found from the expert database through matching and used for straightening of the guide rail, if various indexes of the straightened guide rail meet requirements, all the index data are stored in the database, and otherwise next straightening is conducted. By the adoption of the automatic lift guide rail straightening method based on the expert database technology, the labor cost of production is reduced, and the yield of a production line is improved.

Description

technical field [0001] The invention belongs to the field of automatic detection, in particular to an automatic straightening method for elevator guide rails based on expert database technology. Background technique [0002] With the advancement of high-rise buildings, elevators have gradually become an indispensable means of transportation for people, and their safety and comfort have also become the focus of attention. The entire elevator system is mainly composed of eight parts, including: traction system, guide system, car, door system, weight balance system, electric drive system, electrical control system and safety protection system. The elevator guide rail is an important part of the elevator guidance system. It is the guiding device for the elevator to move up and down. It not only guides the elevator up and down, but also determines the comfort and safety of the elevator. Horizontal shaking and noise will seriously affect the safety and comfort of elevator operati...

AI Technical Summary

Problems solved by technology

[0004] The traditional elevator guide rail straightening technology mainly relies on manual hydraulic straightening methods for straightening. Due to the uncertainty of human vision and judgment, the traditional method of straightening cannot be more accurate after the accuracy reaches a certain small range. Straightening

In addition, manual straightening is not standardized, and the pressing distance of the hydraulic cylinder is fixed. As a result, there is no standard for manual straightening, and standardization cannot be achieved, making traditional straightening methods unable to meet the needs of elevator companies.

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