| 摘要 |
A mobile machinery base includes a case, two caster wheels provided under rear corners of the bottom of the case, two adjustable feet with gaskets to stand on or leave the ground, and a liftable caster wheel assembly connected to a center portion of one side of the bottom of the case. An object to be moved is placed on an upper surface of the case, which has a structural strength enough for supporting heavy objects to be moved. A hang frame is fixed under the bottom of the case, connected to a fixing frame having two lateral plates. Then, if a pedal of the liftable caster wheel assembly is pressed down, the fixing frame with the adjustable feet is lifted up to leave the ground, permitting the caster wheel of the liftable caster wheel assembly contact the ground to let the mobile machinery base freely move around on the ground.
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