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 carriage 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 carriage in a raised position. The carriage subsystem also includes a flange for attaching an object to the carriage 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. A collar attached to the top of the tubular structure includes a tubular body with an outer diameter less than the inner diameter of the tubular body of the carriage subsystem. At least one slot is formed in the tubular body of the collar and configured for controllable engagement by the hook pivotally mounted on the tubular body in the interior central channel of the carriage subsystem. At least one pulley is rotatably mounted to the tubular body of the collar and configured for guiding a lanyard attached to the carriage subsystem at one end of the lanyard. An irrigation subsystem may be provided to irrigate supported planters. An electrical subsystem comprising aligned electrode assemblies may also be provided to supply electric power to an electrical load supported by the carriage when the carriage is locked in the raised position.