| 摘要 |
<p>Load supporting arrangement with permanent magnets used for suspension on the hooks of a lifting arrangement, has housing for a magnetic system and device for controlling the magnetic flux. This control responds to the weight of the load carrying arrangement. The latter has relatively high load carrying capacity and loads in excess of 500 kg can be lifted. The magnetic arrangement (2) consists of two flat parallel magnetic units (6,7) built up of alternating magnetic and nonmagnetic elements (8,9). One magnetic unit (6) is fastened on the lower part of the housing (1) and the other magnetic unit (7) is guided horizontally in the zone of the joint action of the magnetic elements (8) with gap (11). This arrangement can be moved back and forth by control (3), using step (10) which corresponds to thickness of an element, in relation to the fixed magnetic unit (6).</p> |
