| 摘要 |
A carriage assembly of a mobile rack is provided to easily fix a bearing of a rack wheel to the carriage by installing a wheel housing of the rack wheel and firmly connecting carriages to each other. The carriage assembly includes a rack wheel(100) rotatively moving along a rail, a wheel shaft(110) installed on a side of the rack wheel and having bearings installed on both sides thereof, a wheel housing for accommodating the rack wheel, a pair of carriages(130,130') installed opposite to each other in both directions of accommodating the rack wheels, a connecting shaft(140) connecting the wheel shaft of the rack wheel to the opposite wheel shaft of the rack wheel, and a pair of carriage connecting beams(150,150') connecting one end portion of the carriage and the other end portion of the carriage, respectively.
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