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    溢流閥(是壓力控制閥)作用主要是(控制系統壓力),以起到調壓、穩壓、限壓的作用,以保護油泵和油路系統的安全及保持油路系統的壓力恒定。通常使溢流閥的調定壓力比系統最高工作壓力高(10%~20%)。

    來源:未知 閱讀次數:
    溢流閥(是壓力控制閥)作用主要是(控制系統壓力),以起到調壓、穩壓、限壓的作用,以保護油泵和油路系統的安全及保持油路系統的壓力恒定。通常使溢流閥的調定壓力比系統最高工作壓力高(10%~20%)。
    2. 液壓傳動系統的組成(動力部分:液壓泵)(執行部分:液壓缸、液壓馬達)(控制部分:壓力控制閥、方向控制閥、流量控制閥)(輸助部分:油箱、過濾器、油管、管接頭、壓力表計等)。
    3. 皮帶機在有電的情況下發生開不起來的最常見的原因是(事故回路開路)(事故回路短路)(操作保險爆)。
    4. 軸承按工作面摩擦可分為(滑動軸承)(滾動軸承)二種。
    5. 膠帶端頭的連接有(機械連接)和(硫化連接)兩種。
    6. 彈簧清掃器是利用(彈簧)壓緊(刮煤板),把膠帶上的煤刮下。
    7. 緩沖鎖氣器具有減少(誘導)風,減少煤塵對周圍環境的污染,有利于提高(除塵器)的除塵效果,能防止大矸石等砸壞設備,從而起(保護輸煤設備)作用。
    8.巡回檢查電機要做到嗅(氣味)、聽(聲音)、摸(振動及溫度)、看(底腳螺絲)有無松動,摸電機時要(反手)觸摸。
    9.托輥按用途可分為(槽形托輥)、(平行托輥)、(緩沖托輥)。
    10.液力偶合器的油溫過高是因為(充油量多)和(皮帶機負荷大)產生的。
    11.振打器的投用時間應嚴格控制,一般每隔2-3分鐘振打(15-20秒);嚴禁(長時間)啟動振打器工作。
    12.皮帶機尾部密封導料槽的密封效果應良好,應無(噴粉)(撒煤)現象。
    13.導料槽兩側擋煤皮子底邊間距應為(膠帶寬的1/2到2/3)之間,1.5米膠帶應為(0.8米到1.0米)之間。
    14.(帶寬)、(帶速)、(出力)是帶式輸送機輸送能力的重要標志。
    15.帶式輸送機的落煤裝置由(落煤管)、(導料槽)組成。
    16.帶式輸送機的驅動裝置由(電機)、(減速機)、(聯軸器)、(驅動滾筒)組成。
    17.在蝸輪蝸桿傳動機構中,主動件是:(蝸桿)。
    18.碎煤機打擊板磨損厚度不超過(1/3)。
    19.普通平鍵在機械中起著(緊固定位)的作用。
    20.膠帶只在滾筒處跑偏,應該調整(滾筒)。
    21.輸煤皮帶跑偏位移不得超過(100mm).
    22.在液壓系統中,用來防止油反向流動的部件是:(單向閥)。節流閥是(流量控制閥),利用油流通過節流縫隙時的阻力來改變流量。
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