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从挖掘机气çŽ×的纵断面看(沿挖掘机气çŽ×轴线方向åQ‰ï¼šä¸Šå¤§ä¸‹å°çš„不规则“锥形”或“锥体”。磨损大部位åQšåœ¨‹zÕd¡žä½äºŽä¸Šæ­¢ç‚ÒŽ—¶½W¬ä¸€é“活塞环所对应的çŽ×壁,‹zÕd¡žçŽ¯æŽ¥è§¦ä¸åˆ°çš„上口无磨损,形成“çŽ×阶”。在ç‰ÒŽ®Šæƒ…况下,挖掘机气¾~¸çš„¼‚¨æŸå¤§éƒ¨ä½åœ¨ä¸­éƒ¨åQˆè…°é¼“åŞåQ‰ã€‚在同一台发动机上,不同挖掘机气¾~¸ç£¨æŸæƒ…况不ž®½ç›¸åŒï¼Œä¸€èˆ¬æ°´å†·å‘动机的第一¾~¸å‰å£å’ŒåŽä¸€¾~¸çš„后壁处磨损较ä¸ÞZ¸¥é‡ã€?br /> 从挖掘机气çŽ×横断面来看:¼‚¨æŸä¸å‡åŒ€åQŒç£¨æŸæˆä¸è§„则的椭圆形。各挖掘机气¾~¸æ²¿åœ†å‘¨æ–¹å‘的大¼‚¨æŸéƒ¨ä½åQšä¸€èˆ¬æ˜¯˜q›æ°”门对面附˜q‘çŽ×壁磨损大ã€?br /> 挖掘机气¾~¸ç£¨æŸçš„故障诊断与排é™?br /> (2)挖掘机气¾~¸ç£¨æŸçš„原因<br /> 在正常情况下åQŒæŒ–掘机气çŽ×沿工作表面在‹zÕd¡žçŽ¯è¿åŠ¨åŒºåŸŸå†…的磨损是沉K«˜åº¦æ–¹å‘呈上大下小的不规则锥åŞ。磨损的大部位是‹zÕd¡žåœ¨ä¸Šæ­¢ç‚¹ä½ç½®æ—Óž¼Œ½W¬ä¸€é“活塞环相对应的¾~¸å£ã€‚而活塞环与çŽ×壁不接触的上口几乎没有发生磨损而åŞ成明昄¡š„¾~¸è‚©ã€?br /> 上大下小的原因:<br /> ①机械磨损:<br /> ‹zÕd¡žä½äºŽä¸Šæ­¢ç‚ÒŽ—¶åQŒé«˜æ¸©ç‡ƒæ°”爆发压力大åQŒè‡´ä½¿æ´»å¡žçŽ¯å¯ÒŽŒ–掘机气çŽ×壁的正压力加大,摩擦力也加大åQŒæ¶¦æ»‘æÑa膜被破坏åQŒç¬¬ä¸€é“活塞环对应的挖掘机气çŽ×壁磨损äؓ严重ã€?br /> ②腐蚀¼‚¨æŸåQ?br /> 混合气燃烧生成的有机酸和酸性氧化物åQˆæº¶äºŽæ°´ç”ŸæˆçŸ¿ç‰©é…¸ï¼‰ã€‚对挖掘机气¾~¸è¡¨é¢äñ”生腐蚀作用åQŒé€ æˆè…èš€¼‚¨æŸã€‚挖掘机气çŽ×体上部不能完全被润滑油膜覆盖åQŒè…èš€ä½œç”¨æ›´åŠ ä¸¥é‡ã€?br /> ③磨料磨损:<br /> ½Iºæ°”中的ž®˜åŸƒã€æ¶¦æ»‘æÑa中的机械杂质、发动机中的¼‚¨å±‘½{‰è¿›å…¥æŒ–掘机气çŽ×壁间造成¼‚¨æ–™¼‚¨æŸã€‚空气中的尘埃被åæ€h挖掘机气¾~怸Šéƒ¨ï¼Œå…¶æ£±è§’锋利,因而挖掘机气çŽ×上部¼‚¨æŸä¹Ÿå¤§ã€‚腰鼓åŞ的原因:在风沙严重地区,大量灰尘˜q›å…¥æŒ–掘机气¾~¸åŽåQŒç”±äºŽæ´»å¡žåœ¨æŒ–掘机气¾~怸­éƒ¨è¿åŠ¨é€Ÿåº¦å¤§ï¼Œ¼‚¨æ–™¼‚¨æŸä¸¥é‡ã€?br /> 挖掘机气¾~¸ç£¨æŸçš„故障诊断与排é™?br /> 挖掘机气¾~¸ç£¨æŸæ•…障诊断方æ³?br /> ①检‹¹‹æ•…éšœçŽ×压力ã€?br /> ②检‹¹‹æŒ–掘机气çŽ×直径及圆柱度ã€?br /> 挖掘机气¾~¸ç£¨æŸçš„故障诊断与排é™?br /> 挖掘机气¾~¸ç£¨æŸæŠ€æœ¯æ ‡å‡?br /> 衡量挖掘机气¾~¸ç£¨æŸæ£€éªŒçš„主要指标是圆度和圆柱度,挖掘机气¾~¸ç£¨æŸåŽåœ†æŸ±åº¦è¯¯å·®è¾¾åˆ?.175â€?.250mm、圆度误差达åˆ?.050~0.063mmåQˆä»¥å…¶ä¸­¼‚¨æŸå¤§çš„一个挖掘机气çŽ×为准åQ‰ã€æŒ–掘机气çŽ×¼‚¨æŸž®ºå¯¸ä¸Žæ ‡å‡†å°ºå¯¸å·®å€û|¼ˆæ¡‘å¡”¾UÏx±½è½¦æŒ–掘机气çŽ×¼‚¨æŸž®ºå¯¸ä¸Žæ ‡å‡†å°ºå¯¸çš„差值大äº?.08mmåQŒä¸°ç”?Aæ±½èžR挖掘机气¾~¸ç£¨æŸå°ºå¯æ€¸Žæ ‡å‡†ž®ºå¯¸çš„差值大äº?.20mmåQ‰ï¼Œä½œäؓ汽èžR发动æœø™¿›è¡Œå¤§ä¿®çš„主要依据之一。挖掘机¾l´ä¿®24ž®æ—¶ä¿®ç†çƒ­çº¿åQ?5223463988åQŒæŽå¸ˆå‚…为您解答éšùN¢˜åQ?br /></p><br /> </div> <div class="newArtiNext mt10"><div>上一æ?<a href="409.html"> 分äín!卡特挖掘机日å¸æ€¿å…ȝŸ¥è¯?/a></div> <div>下一æ?<a href="407.html">挖掘机气¾~¸åž«çš„更换操作方æ³?</a></div> </div> <div class="tag">相关标签åQ?a href="/download/">挖掘机维ä¿?/a>,<a href="/news/wjjwx">挖掘æœÞZ¿®ç?/a>,<a href="/about/about5.html">挖掘机维修厂</a></div> <div class="crumb mt15"> <span class="fl font_w fb fs22">相关新闻<b class="fs14 fn font_i ml5">RELATED NEWS</b></span> </div> <div class="insNews1 clearfix pt10 fs14 font_w"> <ul> <li><a href="/news/410.html" rel="nofollow" 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