LOAD CARRYING PLATFORM SHUTTLE

摘要

The load carrying platform shuttle has a static frame that defines a cam surface. A carriage is arranged to telescope into the static frame. A ramp has an outboard edge rotatably connected to the carriage. A cam follower is disposed on the ramp so as to engage with the cam surface. The cam surface and the cam follower cooperate such that an inboard edge of the ramp is automatically maintained at an elevated height whilst the carriage is disposed intermediate of an extended position and a retracted position and such that the inboard edge of the ramp is automatically maintained at a lowered height whilst the carriage is at the retracted position. The static frame is constructed from I-beams that are reinforced to increase their resistance to the bending moment applied by the carriage whilst it is in the extended position.

主权项

1. A load carrying platform shuttle comprising:
a static frame securable to a mounting location, the static frame defining a cam surface; a carriage arranged to telescope into the static frame between an extended position wherein at least a majority of the carriage is outboard of the mounting location and a retracted position wherein at least a majority of the carriage is inboard of the mounting location; a ramp having an outboard edge rotatably connected to the carriage; and a cam follower disposed on the ramp so as to engage with the cam surface; wherein the cam surface and the cam follower cooperate such that an inboard edge of the ramp is automatically maintained at an elevated height whilst the carriage is disposed intermediate of the extended position and the retracted position; and wherein the cam surface and the cam follower cooperate such that the inboard edge of the ramp is automatically maintained at a lowered height whilst the carriage is at the retracted position.