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                【姿勢】挖掘機特殊環境下作業注意事項

                點上面藍色字 機器貓關注我


                挖掘機特殊環境下作業注意事項如下所示:
                (1)上坡和下坡

                1)在陡坡上向下行駛時,利用行走操縱桿和油門操縱桿保持較低的行駛速度。在超過15度的斜坡上向上或向下行駛時,斗桿與動臂應保持90~110度的夾角,鏟斗背面離地距離為20~30cm,并降低發動機轉速。
                2)若下坡時要制動,則把行走操縱桿置于中位,這樣制動器就會自動起作用。
                3)在上坡行走時,若履帶板打滑,除了依靠履帶板的驅動力行駛上坡外,還應利用斗桿的拉力幫助機器上坡。
                4)若在上坡時發動機熄火,則可將行走操縱桿移至中位,把鏟斗降至地面,使機器停止,然后再啟動發動機。
                5)在斜坡上發動機熄火,禁止進行回轉操作,防止上部結構在其自重作用下回轉。
                6)若機器停在斜坡上,則不要打開駕駛室門,這樣容易引起操作力的突然變化,駕駛室門應始終關閉。
                7)在斜坡上行走時,不要改變行走方向,否則會導致機器傾翻或滑動。如果必須要在斜坡上改變行走方向,則應在較平緩的堅固的斜坡上操作。
                8)避免橫越斜坡,因為這樣可能導致機器滑動。
                9)當在斜坡上工作時,不要進行回轉,因為這樣容易使機器因失去平衡而傾翻、滑動。應在低速時小心地進行回轉和操作動臂。


                (2)在泥水中和松軟的地面上作業
                1)如果河床是平的而水流速度緩慢,則在水中的操作深度應在托鏈輪的中心線以下。如果河床的狀況不佳而水流速度快,則一定要注意,不要使水或砂石侵入回轉支承機構、回轉小齒輪、中央回轉接頭等。如果水或砂石侵入回轉大軸承、回轉小齒輪、大齒圈及中央回轉接頭,則應立刻更換潤滑脂或回轉大軸承,要暫停作業并及時修理。
                2)在松軟的地面上作業時,地面可能會一點一點地陷落,作業時要隨時注意機體下部的情況。
                3)在松軟的地面上作業時,應注意不要超過機器的下陷深度。
                4)當單側履帶陷入泥水中時,可利用動臂、斗桿和鏟斗抬起履帶,然后墊上木板或圓木,讓機器駛出。如有必要,則在鏟背下面也墊一塊木板。在使用工作裝置抬起機器時,動臂和斗桿間夾角應為90~110度,應始終使鏟斗底部與泥水地面接觸。
                5)當兩側履帶都陷入泥水中時,應按上述方法墊放木板,把鏟斗錨人地中(鏟斗的斗齒插入地中),然后拉回斗桿,同時把行走操縱桿置于前進位置,拉出挖掘機。
                6)如果機器陷在泥水中,并且無法靠自己的力量脫離時,應用有足夠強度的鋼索牢牢地拴在機體的行走架上,在鋼索和行走架間放置厚木板,以免損壞鋼索和機體,然后用另一臺機器向上拖拉。行走架上的孔是用來牽引較輕的物體的,千萬不能用來拉重物,否則孔會破裂,造成危險。
                7)在泥水中作業時,若工作裝置連接銷浸在水中,則每次完工后都要加潤滑脂。對重載作業或深度挖掘作業,每次作業前都要給工作裝置連續銷加潤滑脂。每次加潤滑脂后,操作動臂、斗桿和鏟斗數次,然后再加潤滑脂,直到將舊潤滑脂擠出為止。


                (3)在海濱地區作業
                在操作之前應檢查螺塞、放水閥和各蓋子是否松動,若松動則擰緊。必要時,在電氣設備里面加適量油脂,防止設備銹蝕。操作后要徹底清洗整個機器,以除去鹽分,必要時在需要的地方加潤滑脂或潤滑油,以避免銹蝕。


                (4)在多塵地區作業
                1)要經常檢查并清洗空氣濾芯,必要時予以更換。
                2)經常檢查水箱中水質污染情況,縮短清洗水箱的時間間隔,以防內部被雜質堵塞,影響發動機及液壓系統散熱。
                3)添加柴油時要小心,不要讓雜質混入柴油中,而且要在適當的時間檢查柴油濾芯,必要時予以更換。
                4)應在適當的時候清潔啟動電機和發電機,以免累積灰塵。


                (5)在寒冷的冬天作業
                當溫度特別低時,各種油液的黏度增大,發動機啟動會變得困難,而且若冷卻液凍結,還會損害發動機和水箱。
                1)換用黏度低的柴油、潤滑油和液壓油。
                2)在寒冷的冬天使用機器時,加到冷卻系統中的防凍液的比例應為最低溫度時的比例。禁止使用甲醇、乙醇或丙醇基的防凍液。無論是單獨使用,還是與防凍劑混合使用,一定要避免使用防漏水劑。不能把一種防凍液與另一種不同牌號的防凍液混合使用。對于永久型防凍液,一年之內不需要更換。若沒有永久型防凍液,則在冬季僅允許使用無抗腐蝕劑的乙二醇防凍液。在這種情況下,每年(在春季或秋季)應清洗冷卻系統2次,僅在秋季加防凍液,在春季不再加防凍液。
                3)溫度降低后,蓄電池充電的能力會降低并可能結冰,應蓋上蓄電池或者把它從機器上卸下,放在溫暖的地方,第二天作業前再裝上。若發現蓄電池電解液液位太低,則應在第二天早上工作前加蒸餾水,不要在當天完工后加水,以防止晚上結冰。
                4)為防止因泥和水結冰使第二天早上機器不能開動,必須徹底清除機體上的泥和水,避免泥或臟物隨水滴進密封圈,損壞密封裝置。
                5)將液壓缸的活塞桿縮回到液壓缸筒內,避免泥土和水粘在活塞桿上,損害液壓缸密封圈。
                6)把機器停在堅硬、干燥的地面上。若沒有條件,可把機器停在木板上,第二天開走。
                7)打開放水閥,放掉聚集在燃油系統中的水,防止凍結。
                8)機器在泥水中作業后,必須按下述方法清除車上的泥水:發動機低速運轉,將上部裝置回轉90度,使工作裝置轉到履帶側面;將工作裝置慢慢地壓向地面,使履帶輕輕浮起,讓履帶空轉,清除上面的泥水,另一側履帶也按此辦法清除泥水。
                9)由于電氣設備對于水汽特別敏感,所以在洗車或遇到雨雪時應避免電氣設備接觸水汽。由于控制器、監測器等電氣元件都安裝在駕駛室中,所以絕不能讓雪水侵入駕駛室內。

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