Automatic ramp car

摘要: A deployable and retractable ramp assembly is mounted on a flatbed railroad car to allow equipment be moved from tracks. The comprises four sections pivotally connected each other in retracted position Z-folded configuration. Each section pair of rectangular tubes or rails spaced by cross-braces distance equal the spacing wheels same axle. Two masts are can locked substantially upright position, with first second sheaves top end mast engaging cable winch. third winch applies restraining force preclude moving too quickly under gravity once past center during deployment.