資訊動態

緊固件螺栓斷裂原因分析

發布時間:2019-01-08

        眾所周知,螺栓是用來連接機械零件的,對於機械的作用也是非常重要的。如果螺栓連接不好也會直接影響到機械正常運轉。但是,讓rang人ren苦ku惱nao的de是shi螺luo栓shuan經jing常chang在zai大da量liang的de生sheng產chan中zhong會hui產chan生sheng斷duan裂lie現xian象xiang,讓rang很hen多duo用yong戶hu不bu知zhi道dao什shen麼me因yin素su而er導dao致zhi螺luo栓shuan斷duan裂lie的de,那na螺luo栓shuan斷duan裂lie的de因yin素su有you哪na些xie?螺luo栓shuan是shi如ru何he斷duan裂lie的de?螺luo栓shuan斷duan裂lie的de因yin素su有you幾ji類lei?今jin天tian我wo們men就jiu來lai分fen析xi一yi下xia其qi中zhong的de原yuan因yin。

        1、柴油機的連杆分多種級別,在檢修中應注意不能換用不同級別的連杆。如果在檢修中由於馬虎不仔細將連杆蓋搞亂、錯裝,會造成連杆大頭結合麵的配合不緊密,在發動機運行中會造成連杆蓋鬆動而導致連杆螺栓的斷裂。wd615係列柴油機連杆大頭為斜切口型,斜切角呈45°,連杆蓋和連杆大頭結合麵采用60°鋸齒形定位結構,這種結構具有貼合緊密、定位準確、可靠、結構緊湊的特點。如果在維修中將連杆蓋搞亂、錯裝,勢必會造成結合麵鋸齒定位不好,極易造成發動機在工作中連杆蓋的鬆動,而導致連杆螺栓的斷裂。

        2、裝zhuang配pei時shi扭niu緊jin力li矩ju過guo大da,用yong力li不bu均jun勻yun。由you於yu裝zhuang配pei中zhong沒mei有you嚴yan格ge的de配pei用yong扭niu力li扳ban手shou,具ju體ti扭niu緊jin力li矩ju又you不bu太tai了le解jie,認ren為wei越yue緊jin越yue好hao,緊jin固gu連lian杆gan螺luo栓shuan用yong較jiao長chang的de加jia力li杆gan,扭niu緊jin力li矩ju過guo大da,超chao過guo了le螺luo栓shuan材cai料liao的de屈qu服fu極ji限xian,使shi連lian杆gan螺luo栓shuan出chu現xian屈qu服fu變bian形xing,使shi之zhi在zai衝chong擊ji載zai荷he的de作zuo用yong下xia因yin過guo度du的de伸shen長chang而er斷duan裂lie。應ying強qiang調tiao的de是shi,一yi定ding要yao按an標biao準zhun扭niu緊jin連lian杆gan螺luo栓shuan,千qian萬wan不bu能neng認ren為wei越yue緊jin、力量越大越好。

        3、chaiyoujizaiyunxingzhongchuxianfeicheguzhanghuohuosaizaiqigangneishaosideguzhang,jianglianganluoshuanladuan。ruguofadongjizaishiyongzhongchuxianguofeichedeguzhang,yingduifadongjizuoyiciquanmianjianzha,zuihaogenghuanlianganluoshuan,ruguozaiyunxingzhonggebieqigangchuxianguojiaoyanzhongdelagang,zaigenghuanqiganghuosaizujianshiyeyingjianglianganluoshuangenghuan。

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