| 摘要 |
<p>The device has a rigid rod (1) with a height greater than that of a user, and a fixed pulley (8) fixed to an upper part of the rigid rod. A movable pulley (10) is connected to an upper side of a backpack (14), and a suspension link (9) includes an end that passes over the pulleys and descends to the backpack. A slide (13) is fixed on a rear side of the backpack such that the rigid rod is longitudinally slidable. A wheel (18) for moving on the floor is fixed to a lower end of the rigid rod. A blocker (15) is located at the rear side of the backpack to clamp a portion of the suspension link.</p> |
