VARIABLY CONTROLLED ADJUSTABLE HEIGHT CARRIAGES FOR RAISING, LOWERING, HOLDING, LOCKING AND RELEASING OBJECTS ON ELEVATED STRUCTURES

摘要

A system for raising and lowering a wide range of objects on an elongated tubular structure includes a carnage subsystem with a tubular body having an interior central channel an inner diameter greater than the outer diameter of the elongated tubular structure Rollers facilitate linear translation of the tubular body along the elongated tubular structure At least one hook is pivotally mounted on the tubular body and configured to controllably engage a means for locking the carnage in a raised position The carriage subsystem also includes a flange for attaching an object to the carnage subsystem A winch and cable control motion of the carriage system between a lowered position adjacent to the base and a raised position adjacent to the top of the tubular structure.