| 摘要 |
<p>The heavy load carrying equipment has a number of parallel rollers running on spindles in a frame. The frame is mounted in a lifting mechanism (16) for height adjustment. It can have at opposite ends profiled-section members (3), sliding in corresponding mountings (22, 23) in the lifting mechanism. Each mounting can be supported on a lifting ram (17), it being possible to operate the rams separately, or simultaneously, and the mountings can also be arranged to tilt on the rams.</p> |
