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　　懸臂式(shi)起重機(ji)制(zhi)動(dong)類型(xing)(xing)的選(xuan)擇，主(zhu)要(yao)(yao)是根據主(zhu)機(ji)的要(yao)(yao)求或代理的產品標(biao)準(zhun)和實(shi)際需要(yao)(yao)，確定(ding)制(zhi)動(dong)類型(xing)(xing)。標(biao)準(zhun)：起升機(ji)構、變幅(fu)機(ji)構必須設置封閉式(shi)制(zhi)動(dong)，經常(chang)行走或回轉機(ji)構可(ke)以選(xuan)擇常(chang)閉式(shi)制(zhi)動(dong)器。

　　考(kao)慮(lv)到(dao)使(shi)(shi)用場(chang)所，如制動(dong)(dong)(dong)裝(zhuang)置有足夠的(de)(de)(de)空(kong)間(jian)，可(ke)選擇塊式(shi)、帶(dai)式(shi)制動(dong)(dong)(dong)或(huo)(huo)(huo)臂式(shi)盤式(shi)制動(dong)(dong)(dong)器(qi)(qi);在空(kong)間(jian)范圍內，可(ke)選擇或(huo)(huo)(huo)夾盤式(shi)制動(dong)(dong)(dong)蹄型。考(kao)慮(lv)使(shi)(shi)用主機環(huan)境，對(dui)泄漏的(de)(de)(de)油有嚴格的(de)(de)(de)要求，場(chang)合宜選用電磁或(huo)(huo)(huo)氣動(dong)(dong)(dong)制動(dong)(dong)(dong)器(qi)(qi)，環(huan)境溫度高(gao)的(de)(de)(de)冶(ye)金場(chang)所可(ke)選用絕緣等(deng)級(ji)較高(gao)的(de)(de)(de)液壓制動(dong)(dong)(dong)器(qi)(qi)或(huo)(huo)(huo)冶(ye)金型電磁制動(dong)(dong)(dong)器(qi)(qi)。

　　在(zai)環境溫度較(jiao)低(di)(di)或較(jiao)高時(shi)，在(zai)選(xuan)擇電動(dong)(dong)液(ye)壓制動(dong)(dong)器時(shi)，應(ying)注(zhu)意更換液(ye)壓油的(de)相應(ying)牌號。在(zai)含鐵粉塵(chen)嚴(yan)重的(de)環境中(zhong)，應(ying)避免使用電磁鐵制動(dong)(dong)，防止灰(hui)塵(chen)進(jin)入(ru)電磁鐵間(jian)隙，影響電磁鐵吸力。對于特殊或重要(yao)(yao)場合，可根據需要(yao)(yao)增設(she)剎車功能。在(zai)低(di)(di)溫環境下，可使用液(ye)壓驅(qu)動(dong)(dong)的(de)電加熱器。啟動(dong)(dong)時(shi)對制動(dong)(dong)過程有嚴(yan)格的(de)改造要(yao)(yao)求，配有狀態開關，以了(le)解制動(dong)(dong)器的(de)開啟情況。

　　對(dui)于環(huan)境的維(wei)護，調整更(geng)難實(shi)施(shi)，可(ke)以安裝到(dao)平等的設備和摩擦磨(mo)損制(zhi)動(dong)間隙自(zi)補(bu)償裝置(zhi)(zhi)。加手動(dong)松(song)動(dong)剎車裝置(zhi)(zhi)，可(ke)在特殊情(qing)況下人(ren)為(wei)開啟制(zhi)動(dong)器。