| 摘要 |
A bed lift mechanism raises and lowers two beds is provided and includes a first lifting assembly attached to one side of the bed including a pair of vertical chains guided by four lifting sprockets, the vertical chains and lifting sprockets disposed in a pair of vertical track members; and a second lifting assembly attached to another side of the bed including a pair of vertical chains guided by four lifting sprockets, the vertical chains and lifting sprockets disposed in a pair of vertical track members. A single drive mechanism transfers rotational motion to the lifting sprockets which are coupled to each other to move synchronously. The bed lift also provides multiple safety mechanisms to prevent the beds from drifting down unintentionally.
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