| 摘要 |
A travel device comprising frame means and travelling means mounted on the frame means for travelling on a running surface and comprising a plurality of wheels or a plurality of endless rails each including a plurality of belt wheels wherein the frame means includes a main frame, a pair of swinging frames disposed on the sides of the main frame, and a connecting frame disposed on one end of the main frame, wherein the central portion of the connecting frame is connected to the main frame via a one-shaft swinging coupling means, wherein the ends of the connecting frame are each connected to one end of each of the swinging frames via an all-shaft swinging coupling means and wherein the other end of each of the swinging frames is connected to the sides of the other end of the main frame via a two-shaft swinging coupling means.
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