Bridge construction small-sized suspension cage

The invention discloses a bridge construction small-sized suspension cage which comprises a suspension cage rectangular frame and protection devices; the suspension cage rectangular frame comprises four upright columns arranged at the frame right angles respectively; the upright columns are rectangular pipes; each protection device comprises a positioning embedding buckle, a steel wire hanging rope and a supporting bolt device; the four sets of the supporting bolt devices are arranged at the upper ends of the upright columns respectively; the axes of the supporting bolt devices are perpendicular to the axes of the upright columns respectively; each supporting bolt device comprises a supporting bolt, a first through hole and a second through hole; the first through holes are formed in the upper ends of the upright columns respectively; the second through holes are formed in the middle parts of the positioning embedding buckles respectively; and the supporting bolts sequentially penetrate through the second thr