| 摘要 |
<p>Provided is a transporter of the type having an ability to run over roads, ramps and stairways. The transporter comprises a frame, a stage movably attached to the top of the frame and a pair of left and right main crawlers mounted underneath the frame in a spaced-apart parallel relationship with each other. Extending frontwardly from the frame are a pair of left and right front arms, each of which, in turn, carries a front crawler that can be moved in synchronism with the main crawler. Movement of the front arm is caused by a front arm actuator, while the stage is moved with respect to the frame by means of a levelling device, thus keeping the horizontality of the stage.</p> |
