| 摘要 |
A lifting device for transporting loads includes a vertical support structure and a horizontally extending cantilevered support arm which is attached to the support structure by a hooked portion engaging in a slot with simultaneous engagement of a bolt within an aperture. The hooked portion and slot and the bolt and aperture may each be defined, respectively, on opposite ones of the contact plate and the support structure in order that they may be engaged to removably mount the cantilevered support arm on the support structure.
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