| 摘要 |
The present invention provides a lifting apparatus with variable and independently selectable height and reach which comprises a base (24) supporting a lifting means (2, 4) etc. The lifting means comprising two upwardly extending variably extendible support means (2, 4); an arm (16) having a proximal end portion and an intermediate portion, which are pivotally connected to an upper end portion of respective ones of said variably extendible support means (2, 4); and a load support means (22) depending from a distal end portion (18) of the arm (16). Each of the variably extendible support means (2, 4) is provided with drive control means formed and arranged for extending and retracting each of the variably extendible support means (2, 4) relative to each other for controlling translational movement of the arm (16) wherein the reach and elevation of the lifting apparatus may be altered substantially independently of each other by selective extension and/or retraction of each of the variably extendible support means (2, 4) whereby a load can be selectively and independently moved in generally vertically and/or horizontally extending directions.
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