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塔式起重機安全技術規范淺析——我國現行塔式起重機的技術規范大部分是90年代頒發的,縱觀現狀,國內生產的各類塔機與之相對照,尚有一定的差距,主要表現在安全裝置不全、輔助機構欠缺等問題。如有的缺少卷筒防脫繩裝置;有的缺少變幅小車斷軸防墜裝置;有的缺...
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