Floating lathe bed for automobile longitudinal beam sheet material straightness detection and correction equipment

The utility model discloses a floating lathe bed for automobile longitudinal beam sheet material straightness detection and correction equipment, which comprises a material pressing plate with two ends respectively mounted on a first fixing frame and a second fixing frame through first driving parts, and a plurality of fixed workbenches and material conveying channels which are arranged at intervals and positioned below the material pressing plate, a gap adjusting device is installed on the material pressing plate and comprises a plurality of gap adjusting assemblies installed in parallel, each gap adjusting assembly comprises a plurality of lifting block assemblies, each lifting block assembly comprises a lifting block installed between push rod bases, a guide hole is formed in each lifting block, and an adjusting block is installed in each guide hole; the adjusting block is fixedly connected with a push rod located on the side edge of the lifting block, the push rod is in sliding fit with a push rod base, a