| 摘要 |
<p>The bed (10) is provided with a height-adjustable underframe (14) comprising several supporting legs (16) and an upper frame (12) which is connected to the underframe. Each leg (16) has a swiveling roller and/or a guide roller (40) on the lower end (38) thereof. The roller (40) can move beyond the supporting edge (52) of the leg (16) into the lower end (38) of the leg (16). A lifting device (56) can be moved out of the upper end (68) of the leg (16) and into the upper end (68) of the leg. Said lifting device has a fastening element (76) which is joined to the upper frame (12). The lifting device (56) has a double spindle arrangement. The double spindle arrangement presses against the retaining element (42, 44) of the roller (40) towards the end of its inward movement into the leg (16), whereby the roller (40) of the leg (16) protrudes downwards above the supporting edge (52) thereof.</p> |
