| 摘要 |
<p>Provided is an technology that enables a columnar body and crossbeams to be easily coupled, and exhibits superior strength compared to the prior art. A beam coupling member, which couples crossbeams that extend in the horizontal direction, includes a first connecting part to which the ends of the crossbeams are connected and which is provided to a side surface of the beam coupling member. The first connecting part contains a through hole through which a fixing member, which includes a fixing-member shaft that couples to the ends of the crossbeams and a head part that is contiguous to end of the shaft, is inserted, and a protrusion that is provided in the vicinity of the through hole and fits into grooves in the crossbeams to control the movement of the crossbeams.</p> |
