earticle

영어

An escalator which is widely used for step ascending system recently is operated by rotating chain below the escalator step connected with the sprocket which is located in upper part of the escalator. When the chain rotates, the sprocket wheel actually contacts with the step roller made of elastic urethane. As more people ride escalator or the rise of escalator gets higher, the larger reaction force is applied on a step roller which contacts with sprocket. Therefore, we must analyze the load condition and the appropriate rise of the escalator in which a step roller can sustain. So, in this study we got the vertical displacement on the contact surface of the step roller from the experiment of the roller contacting with a sprocket wheel, and compared it with that obtained from the nonlinear contact analysis. Then we analyze the stress of the step roller with respect to the change of the contacting area between a step roller and a sprocket wheel.