PROBLEM TO BE SOLVED: To provide a method for manufacturing a bridge plate which is lightweight, can be easily carried, and can be easily and quickly installed at a required point.SOLUTION: A method for manufacturing a bridge plate includes: a first step of arranging a rectangular second reinforcement plate elongate in the fore-and-aft direction vertically below a rectangular first reinforcement plate elongate in the fore-and-aft direction, installing a first aluminum plate extending in the lateral direction on front ends of the reinforcement plates while installing a second aluminum plate extending in the lateral direction on rear ends of the reinforcement plates, installing third and fourth aluminum plates extending in the fore-and-aft direction on both sides of the reinforcement plates, thus forming hollow plate-like members 11A, 11B, each formed of the first and second reinforcement plates and the first to fourth aluminum plates and having a space between the first and second reinforcement plates and a second step of filling an entire space between the reinforcement plates with an urethane foam to form solid plate-like members 11A, 11B by a hardened material of urethane foam in which the urethane foam is hardened.COPYRIGHT: (C)2014,JPO&INPIT【課題】軽量であって簡単に持ち運ぶことができ、必要な箇所へ容易かつ迅速に据え付けることができる渡し板の製造方法を提供する。【解決手段】渡し板の製造方法は、前後方向へ長い矩形の第1補強板の上下方向下方に前後方向へ長い矩形の第2補強板を配置し、それら補強板の前端部に横方向へ延びる第1アルミ板を設置し、それら補強板の後端部に横方向へ延びる第2アルミ板を設置するとともに、それら補強板の両側部に前後方向へ延びる第3および第4アルミ板を設置し、第1および第2補強板と前記第1~第4アルミ板とから形成されて第1および第2補強板の間に空間を有する中空の板状部材11A,11Bを作る第1工程と、それら補強板の間の空間全域に発泡ウレタンを充填し、発泡ウレタンが硬化したウレタンフォーム硬化物によって中実の板状部材11A,11Bを作る第2工程とを有する。【選択図】図1
