| 摘要 |
Lifting device for bed structures comprising a shaft (1) operated by a speed reducer (10). The said shaft' operates two pairs of belts (20, 30, 40, 50) and each of said belts is provided with an "L" shaped bracket (23, 33, 43, 53) on which the bed net (R ) is positioned, so that, by operating the speed reducer (10), that is to say by rotating the shaft (1) in the clockwise and counter-clockwise direction about its longitudinal axis, the belts are wound or unwound with the consequent lifting or lowering of said brackets (23, 33, 43, 53), i.e. lifting or lowering of the bed net (R). |
