| 摘要 |
<p>PURPOSE:To improve the safety at the time of getting on and off a vehicle by providing a step tread capable of going in and out with respect to the outside of a rolling stock under the floor plate of a getting on and off port of the railway rolling stock and disposing a projection amount adjusting mechanism for adjusting the projection amount of the step tread according to a clearance gap between the rolling stock getting on and off port and a platform. CONSTITUTION:When a rolling stock stops at a platform 60 and an open-and-close door 12 is opened, a longitudinal oscillation arm 31 is oscillated, interlocking with the opening operation of the open-and-close door 12 and a horizontal shaft 35 is rotated by the oscillating movement. As a vertical shaft 36 is rotated through a bevel mechanism 32 by the rotary motion, a lateral oscillation arm 33 is oscillated, a moving plate 34 is moved in the direction of an arrow A through a connecting portion 33a and a pin 52a, and the moving plate is projected from a step tread 20 to be stretched between the getting on and off port 11 and the platform 60. A this time, a gap clearance between the getting on and off port 11 and the platform 60 is detected by a sensor 71, a clutch mechanism 72 disposed on the horizontal shaft 35 is controlled to interrupt transmission of rotation to the bevel gear mechanism 32 to limit the projection amount of the step tread 20.</p> |
