STAIR FRAME FOR TEMPORARY SCAFFOLD

PROBLEM TO BE SOLVED: To provide a stair frame for a temporary scaffold that may be positioned in a width direction of a scaffold ledger plate and connected to the scaffold ledger plate with a simplified structure and work process.SOLUTION: A stair frame 20 includes: a plurality of step boards installed between a pair of stringers 21 at a prescribed interval; a hook member disposed at a top edge of the stringer 21, the hook member being hooked on a horizontal member of an upper stage scaffold; and a base body 24 disposed at a lower edge of the stringer 21, the base body being mounted on a scaffold ledger plate 5A. An engaging member 30 and a positioning member 32 are disposed on the base body 24, the engaging member being engaged on an undersurface of the scaffold ledger plate 5A from outside of an edge surface in a width direction of the scaffold ledger plate 5A, and the positioning member being inserted into the scaffold ledger plate 5A from above and bringing the engaging member 30 in a positioning state relative to the scaffold ledger plate 5A, in the width direction of the scaffold ledger plate 5A. A positioning action of the positioning member 32 prevents fall-off of the engaging member 30 outside of the edge surface in the width direction of the scaffold ledger plate 5A.SELECTED DRAWING: Figure 7 【課題】足場布板に、この足場布板の幅方向に位置決めして連結することを、構造の簡単化と作業の容易化を図って行えるようになる仮設足場用階段枠を提供すること。【解決手段】階段枠２０は、一対の側桁２１間に複数の踏板が所定間隔で取り付けられ、側桁２１の上端には上段足場の横架材に掛止するフック部材が設けられ、側桁２１の下端には足場布板５Ａに載置されるベース体２４が設けられているものであり、ベース体２４には、足場布板５Ａの幅方向の端面の外側からこの足場布板５Ａの下面に係止される係止部材３０と、足場布板５Ａに上から挿入され、この足場布板５Ａに対して係止部材３０を足場布板５Ａの幅方向に位置決め状態とするための位置決め部材３２とが設けられ、この位置決め部材３２の位置決め作用により、係止部材３０が足場布板５Ａの幅方向の端面から外側へ脱出することが阻止される。【選択図】図７