| 摘要 |
A service lift stand apparatus includes a support frame assembly, a lift platform assembly, and a drive arrangement. The support frame assembly is composed of a horizontal lower base and a vertical mast mounted in an upstanding orientation on the base. The lift platform assembly is mounted to the upright mast for reciprocal movement vertically therealong. The drive arrangement is supported on the support frame assembly and is operable to movably drive the lift platform assembly in upward and downward directions along the upright mast away from and toward the base of the support frame assembly. The drive arrangement includes a vertical drive screw shaft rotatably mounted to the mast and coupled to the lift platform assembly for driving the lift platform assembly vertically along the mast, and a drive motor mounted on the base and having an output drive shaft intercoupled to the screw shaft. The lift platform assembly includes a support structure mounted to the mast for reciprocal vertical movement along the mast, a pair of elongated wheel support troughs mounted to the support structure for pivotal movement relative to the support structure and for lateral movement toward and away from each other along the support structure, and a mechanism for locking the wheel support troughs in desired positions along the suppport structure for supporting the work implement.
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