Lifting appliance for lifting steel bar truss floor support plate and lifting method

The invention relates to the technical field of building steel structure hoisting, in particular to a hoisting tool for hoisting a steel bar truss floor support plate and a hoisting method.The hoisting tool for hoisting the steel bar truss floor support plate comprises a bottom plate and bearing limiting plates located at the two ends of the bottom plate and perpendicular to the bottom plate; the bearing limiting plate comprises a plate body and a U-shaped clamping plate perpendicular to the plate body. One end of the plate body is connected with the U-shaped clamping plate, a U-shaped groove formed in the inner surface of the U-shaped clamping plate can be connected with the end of the bottom plate in a sleeved mode in the longitudinal direction of the bottom plate, and the end of the bottom plate and the corresponding U-shaped clamping plate are fastened through detachable bolt connection. And a hoisting part is arranged at the other end of the plate body. By means of the detachable structure formed by the