Abstract
The elevator guide rail is composed of a plurality of section by section guide rails in series. The straightness of the guide rail needs to be detected when the elevator is installed. There are many detection methods in the prior art. The first is the vertical line method, but this method is too backward, low precision, time-consuming and laborious; The second is to use RSU (elevator guide rail straightness dynamic detector) for measurement. Its basic principle is to install RSU in the lift car. When the car slides up and down along the guide rail, multiple distance (displacement) sensors detect the horizontal offset of the guide rail in real time, and finally fit these horizontal offsets to analyze its straightness. The disadvantage of this method is that its accuracy will be affected by car shaking and its own error, and the improvement of measurement efficiency is limited. The purpose of this paper is to provide a straightness detection device for elevator guide rail in order to overcome the defects of the above existing technology. With low cost and high efficiency, it is worth popularizing in the inspection work.
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