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挖沙船主軸承溫度過高可能是由于以下原因造成
挖沙船主軸承溫度過高可能是由于以下原因造成：
(1)潤滑油中斷或油量嚴(yán)重不足。斷油或少油的原因及處理辦法與上面討論的相同。
(2)潤滑油過稠或過稀。主軸承產(chǎn)生的熱量除少部分由金屬傳導(dǎo)出去外，大量的是靠潤滑油帶走。當(dāng)潤滑油過稠時(shí)，流動性很差，不能及時(shí)把熱量帶走，引起主軸承發(fā)熱。當(dāng)潤滑油過稀時(shí)，不能形成液體摩擦的油膜，金屑直接摩擦，所以發(fā)熱很快。
(4)鈾瓦刮研不符合要求。軸瓦在刮研時(shí)，若瓦口刮研不夠量，與中空軸頸配合過緊；瓦面與軸頸接觸點(diǎn)過多，瓦面上未刮出油槽等，都會引起軸瓦發(fā)熱。因?yàn)槟C(jī)整個轉(zhuǎn)動部分的重量全部壓在軸承上，軸頸對軸瓦的壓力很大，當(dāng)軸瓦與軸頸配合過緊，或瓦面與軸頸接觸點(diǎn)過多或未留油槽時(shí)，潤滑油無法進(jìn)入接觸面，起不到潤滑作用。處理的辦法是檢查鈾瓦刮研質(zhì)量．重新刮研，直至符合技術(shù)要求為止。
(5)落人雜物。當(dāng)?shù)V漿或泥砂等雜物進(jìn)入到軸頸與軸瓦的摩擦面，將嚴(yán)重破壞軸瓦與軸頸的配合．使軸瓦及軸頸表面拉槽，摩擦加劇，引起發(fā)熱。處理的辦法是消除雜物，重新刮研鈾瓦。
(1)潤滑油中斷或油量嚴(yán)重不足。斷油或少油的原因及處理辦法與上面討論的相同。
(2)潤滑油過稠或過稀。主軸承產(chǎn)生的熱量除少部分由金屬傳導(dǎo)出去外，大量的是靠潤滑油帶走。當(dāng)潤滑油過稠時(shí)，流動性很差，不能及時(shí)把熱量帶走，引起主軸承發(fā)熱。當(dāng)潤滑油過稀時(shí)，不能形成液體摩擦的油膜，金屑直接摩擦，所以發(fā)熱很快。
潤滑油過稠或過稀是因?yàn)橛偷男吞栠x用不當(dāng)，或油的型號基本適合，但氣溫過低致使油的稠度升高．流動性差。處理的辦法是重新選擇潤滑油，或停止供給冷卻水或用加熱器加熱。
(3)潤滑油變質(zhì)。潤滑油變質(zhì)將失去其潤滑性能，導(dǎo)致軸承發(fā)熱。處理的方法除更換潤滑油外．還應(yīng)將潤滑部位、油管、油箱等進(jìn)行清洗。(4)鈾瓦刮研不符合要求。軸瓦在刮研時(shí)，若瓦口刮研不夠量，與中空軸頸配合過緊；瓦面與軸頸接觸點(diǎn)過多，瓦面上未刮出油槽等，都會引起軸瓦發(fā)熱。因?yàn)槟C(jī)整個轉(zhuǎn)動部分的重量全部壓在軸承上，軸頸對軸瓦的壓力很大，當(dāng)軸瓦與軸頸配合過緊，或瓦面與軸頸接觸點(diǎn)過多或未留油槽時(shí)，潤滑油無法進(jìn)入接觸面，起不到潤滑作用。處理的辦法是檢查鈾瓦刮研質(zhì)量．重新刮研，直至符合技術(shù)要求為止。
(5)落人雜物。當(dāng)?shù)V漿或泥砂等雜物進(jìn)入到軸頸與軸瓦的摩擦面，將嚴(yán)重破壞軸瓦與軸頸的配合．使軸瓦及軸頸表面拉槽，摩擦加劇，引起發(fā)熱。處理的辦法是消除雜物，重新刮研鈾瓦。
以上介紹的是挖沙船主軸承溫度過高的原因，希望對大家有所幫助。
The excessive temperature of the bearing sand owner may be caused by the following reasons:
(1) Oil interruption or serious shortage of oil. The reasons and treatments of oil breaking or less oil are the same as discussed above.
(2) Lubricating oil is too thick or too thin. The heat produced by the main bearings is carried out by the metal, and a lot of it is taken away by lubricating oil. When the lubricating oil is too thick, the fluidity is poor, can not take the heat away promptly, cause the main bearing fever. When the lubricating oil is too dilute, it can not form the liquid friction oil film, the gold chips directly rub, so fever quickly.
Lubricating oil is too thick or too dilute because the oil model is inappropriate, or the model of oil is basically suitable, but the temperature is too low to increase the consistency of oil. Poor liquidity. The solution is to re-select lubricating oils, or stop supplying cooling water or heating with heaters.
(3) Lubricating oil metamorphism. Lubricating oil deterioration will lose its lubrication performance, resulting in bearing fever. The method is treated except replacing lubricating oil. The lubrication parts, tubing, fuel tanks should also be cleaned.
(4) The Uranium tile scratch does not meet the requirements. Bearing in the scraping grind, if the tile mouth scraping insufficient quantity, with the hollow shaft neck tight; tile surface and axial neck contact point too much, tile surface not scraping oil trough, will cause the bearing heat. Because the grinding machine of the whole rotation part of the weight of the bearings on the bearing, the axial neck to the bearing pressure is very large, when the bearing with the shaft neck tight, or the tile surface with the shaft contact point too much or not leaving the oil trough, lubricating oil can not enter the contact surface, not to play the The method is to inspect the uranium tile scraping quality. Scratch the grind until it meets the technical requirements.
(5) Litter. When the pulp or mud sand and other debris enters the friction surface of the shaft neck and the bearing, it will severely destroy the match of the bearing and axle neck. The friction is aggravated by the pulling groove of the bearing and shaft neck surface, causing the fever. The solution is to eliminate debris and scratch uranium tiles.
The above mentioned is the reason for the high temperature of the sand owner bearing, hoping to help you.