A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VARIABLE-ANGLE LADDER FOR TEMPORARY SCAFFOLDING
To provide a variable-angle ladder for temporary scaffolding which can prevent a co-rotation of a screw member with another screw member to which the screw member is screwed even if the screw member that is configured to act as a rotational operation member is operated for rotation and even if the another screw member to which the screw member is screwed is not fixed to a stringer by welding.SOLUTION: A variable-angle ladder which can be positioned on a temporary scaffold by changing an inclination angle includes stop means 30 having a male screw member 33 and a female screw member 34 for stopping the shift movement of two sets of vertically spaced upper and lower stringers 2A and 2B. One of the male screw member 33 and the female screw member 34 is a screw member inserted into a curved longitudinal slot 41 formed in a plate-like member 31 coupled to the stringer 2B, and the other is a screw member to be rotated when operated. The one screw member is provided with a rotation stopping portion by a corner portion 38 or the like for engaging with an engaging portion provided as a recess portion 41A or the like in the longitudinal slot 41 to prevent the one screw member from rotating together with the other screw member.SELECTED DRAWING: Figure 5
【課題】回転操作部材となっているねじ部材を回転操作しても、このねじ部材が螺合しているねじ部材がささら桁に溶接等で固定されていなくても共回りすることを阻止できる仮設足場用角度可変梯子を提供すること。【解決手段】仮設足場に傾斜角度を変更して配置できる角度可変梯子は、上下２組のささら桁２Ａ，２Ｂのずれ移動を止めるために雄ねじ部材３３と雌ねじ部材３４を有するストップ手段３０を備えており、雄ねじ部材３３と雌ねじ部材３４のうち、一方は、ささら桁２Ｂに結合された板状部材３１に形成されている湾曲状の長孔４１に挿入されるねじ部材であり、他方は回転操作されるねじ部材であり、一方のねじ部材には、長孔４１に窪み部４１Ａ等として設けられている係合部に係合して、他方のねじ部材と一体に一方のねじ部材が共回りすることを阻止するための角部３８等による回り止め部が設けられている。【選択図】図５
VARIABLE-ANGLE LADDER FOR TEMPORARY SCAFFOLDING
To provide a variable-angle ladder for temporary scaffolding which can prevent a co-rotation of a screw member with another screw member to which the screw member is screwed even if the screw member that is configured to act as a rotational operation member is operated for rotation and even if the another screw member to which the screw member is screwed is not fixed to a stringer by welding.SOLUTION: A variable-angle ladder which can be positioned on a temporary scaffold by changing an inclination angle includes stop means 30 having a male screw member 33 and a female screw member 34 for stopping the shift movement of two sets of vertically spaced upper and lower stringers 2A and 2B. One of the male screw member 33 and the female screw member 34 is a screw member inserted into a curved longitudinal slot 41 formed in a plate-like member 31 coupled to the stringer 2B, and the other is a screw member to be rotated when operated. The one screw member is provided with a rotation stopping portion by a corner portion 38 or the like for engaging with an engaging portion provided as a recess portion 41A or the like in the longitudinal slot 41 to prevent the one screw member from rotating together with the other screw member.SELECTED DRAWING: Figure 5
【課題】回転操作部材となっているねじ部材を回転操作しても、このねじ部材が螺合しているねじ部材がささら桁に溶接等で固定されていなくても共回りすることを阻止できる仮設足場用角度可変梯子を提供すること。【解決手段】仮設足場に傾斜角度を変更して配置できる角度可変梯子は、上下２組のささら桁２Ａ，２Ｂのずれ移動を止めるために雄ねじ部材３３と雌ねじ部材３４を有するストップ手段３０を備えており、雄ねじ部材３３と雌ねじ部材３４のうち、一方は、ささら桁２Ｂに結合された板状部材３１に形成されている湾曲状の長孔４１に挿入されるねじ部材であり、他方は回転操作されるねじ部材であり、一方のねじ部材には、長孔４１に窪み部４１Ａ等として設けられている係合部に係合して、他方のねじ部材と一体に一方のねじ部材が共回りすることを阻止するための角部３８等による回り止め部が設けられている。【選択図】図５
VARIABLE-ANGLE LADDER FOR TEMPORARY SCAFFOLDING
仮設足場用角度可変梯子
HOSHINO KATSUYUKI (author)
2019-06-24
Patent
Electronic Resource
Japanese