Unverified85% confidenceDecision RuleTime unknown
承重要求高的固定扶手必须用膨胀螺栓打入实心墙体，遇到轻质隔墙/空心砖需加装背板或化学锚栓，普通塑料膨胀管在瓷砖空鼓处拉拔力不足会松脱
1
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85%
Confidence
Long-term
Relevance
-
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Unverified承重方向不同：折叠扶手承受的是向下拉力，安装墙面必须是实心承重墙或承重砖墙，空心砖、轻质隔墙（如石膏板、泡沫砖）必须加装背板或穿墙螺栓固定，否则膨胀螺丝会被整块拔出90% similarUnverified空心砖墙或轻质隔墙安装螺丝固定扶手时，普通膨胀螺丝抓力不足，需使用中空墙专用锚栓或穿墙对拉螺栓，否则承重下极易连墙皮脱落90% similarUnverified石膏板/空心砖墙必须用专用膨胀锚栓（如飞机型石膏板锚栓）并分散受力，普通塑料膨胀管在石膏板上承重会直接拉脱带下一块墙皮89% similarUnverified打孔安装扶手固定螺丝必须打入瓷砖后的实体墙（砖墙/混凝土），若墙体为轻质隔墙或空心砖需加装背板加固，否则承重会大幅打折89% similarUnverified壁挂式挂架安装墙面材质决定固定方式：实心砖墙/混凝土墙可用膨胀螺丝承重，空心砖、石膏板或轻质隔墙必须用专用锚栓或穿透龙骨固定，普通膨胀螺丝在空心墙上几乎无承重力88% similar
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