Adjustable lifting appliance

The invention discloses an adjustable lifting appliance. The adjustable lifting appliance comprises a base, a rotary driving mechanism, a transverse moving seat, a transverse moving seat driving mechanism, an outer sleeve, an outer sleeve driving mechanism, an oil cylinder II and a rotation stopping device. During use, the base is fixed to a lifting appliance body, a preset floor slab is hoisted through a hanging tool by utilizing a steel wire rope, and after the preset floor slab is lifted, the lifting appliance body moves the preset floor slab to a corresponding position; at the moment, therotary driving mechanism drives a rotary seat to rotate, so that the transverse moving seat and the outer sleeve rotate in a following mode; and under the action of the rotation stopping device, a hanging bracket is driven to rotate so that the preset floor slab can be accurately rotated to the corresponding angle position, manual operation is not needed, and the safety is improved. According to the lifting appliance, the