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C銆� 2 23 3 H H H i ? ? ? ? ? ? ? 5銆佺敤鑼冩垚娉曞垏鍒舵几闁�(k膩i)绶氶綊杓檪(sh铆)锛岄綊杓牴鍒囩殑鐝�(xi脿n)璞″彲鑳界櫦(f膩)鐢熷湪 鐨勫牬(ch菐ng)鍚�銆� A銆佹ā鏁�(sh霉)杓冨ぇ B銆佹ā鏁�(sh霉)杓冨皬 C銆侀綊鏁�(sh霉)杓冨 D銆侀綊鏁�(sh霉)杓冨皯 6銆佹几闁�(k膩i)绶氶綊杓綊姊濆殭鍚堟檪(sh铆)锛屽叾榻掓鐩稿皪(du矛)榻掕吉浣滈仩(yu菐n)闆㈠湏蹇冪殑骞崇Щ鏅�(sh铆)锛屽叾鍤欏悎 瑙� 銆� A銆佸姞澶� B銆佷笉璁� C銆佹笡灏� 7銆佸湪澶栬級鑽蜂笉璁婄殑鎯呮硜涓�锛屽嫽閫熻綁(zhu菐n)鍕�(d貌ng)蹇冭桓澶栧緫涓婁竴榛�(di菐n)鐨勫綆鏇叉噳(y墨ng)鍔涚殑 r 璁婂寲鐗规€� 锛堢敤鎳�(y墨ng)鍔涘惊鐠�(hu谩n)鐗规€� r 琛ㄧず锛夌偤_(k膩i) ___ _銆� A銆乺=+1 B銆� r= -1 C銆乺=0 D銆�0< r< +1 E銆�-1< r < 0 8銆佹敮鎾愯嚜琛岃粖鍓嶈吉鐨勮桓灞簬 銆� A銆佸偝鍕�(d貌ng)杌� B銆佽綁(zhu菐n)杌� C銆佸浐瀹氬績杌� D銆佽綁(zhu菐n)鍕�(d貌ng)蹇冭桓 涓夈€侊紙8 鍒嗭級鍒楀嚭鍏紡瑷�(j矛)绠楀湒绀烘(j墨)妲�(g貌u)鐨勮嚜鐢卞害锛堣嫢鏈夊京(f霉)鍚堥壐閺�銆佸眬閮ㄨ嚜鐢卞害鎴栬櫅 绱勬潫锛屽繀闋堟槑纰烘寚鍑猴級锛岃┎姗�(j墨)妲�(g貌u)鏄惁鍏锋湁纰哄畾鐨勯亱(y霉n)鍕�(d貌ng)銆傦紙鍦栦腑锛孎(xi脿n)E 骞宠涓旂瓑浜� GD 骞宠涓旂瓑浜� CH銆傦級 绗笁椤屽湒 绗洓椤岀ず鎰忓湒 鍥�銆侊紙12 鍒嗭級濡傚湒鎵€绀虹殑鍏】姗�(j墨)妲�(g貌u)涓�锛屽師鍕�(d貌ng)浠� AB 妗夸綔鍕婚€熻綁(zhu菐n)鍕�(d貌ng)锛屽悇鍊�(g猫)妲�(g貌u)浠跺昂 瀵哥偤锛歀AB=40mm锛孡BC=70mm锛孡AD=65mm锛孡CD=60mm锛孡DE=24mm锛孡EF=72mm锛� 鐢ㄤ綔鍦栨硶浣滃湒锛屽苟鍦ㄥ湒涓婃(bi膩o)鍑猴細 锛�1锛夋粦濉� 5 鐨勮绋� H锛涳紙4 鍒嗭級 锛�2锛夋サ浣嶅ぞ瑙� 胃锛涳紙4 鍒嗭級 锛�3锛夋粦濉� 5 鐨勬渶灏忓偝鍕�(d貌ng)瑙� 纬min銆傦紙4 鍒嗭級锛堝彇绻湒姣斾緥灏何� L=0.001 m/mm锛� 浜�銆侊紙10 鍒嗭級鍦栫ず锛堢浜旈鍦栧湪瑭﹂绱欑 6 闋�(y猫)锛夌洡(p谩n)褰㈠嚫杓(j墨)妲�(g貌u)涓�锛屽嚫杓殑瀵�(sh铆)闅� 杓粨鐐轰竴鍦�锛屽嚫杓篂杌稿績娌块爢鏅�(sh铆)閲濊綁(zhu菐n)鍕�(d貌ng)锛岃│鐢ㄥ弽杞�(zhu菐n)娉曞湪鍦栦笂鐣�(hu脿)鍑烘垨妯�(bi膩o)鍑猴細 锛�1锛夊嚫杓殑鐞嗚珫寤撶窔鍜屽熀鍦�锛涳紙4 鍒嗭級 锛�2锛夊緸鍕�(d貌ng)浠跺緸鍦栫ず浣嶇疆鍗囬珮浣嶇Щ S 鏅�(sh铆)锛屽嚫杓殑杞�(zhu菐n)瑙� 未锛堟渶浣庝綅缃偤璧烽粸(di菐n)锛夊拰鍑� 杓殑澹撳姏瑙� 伪銆傦紙6 鍒嗭級 鍏€侊紙14 鍒嗭級宸茬煡涓€灏�(du矛)姝e父榻掓(bi膩o)婧�(zh菙n)鐩撮綊鍦撴煴榻掕吉锛堝鍤欏悎锛岄潪 20掳澹撳姏瑙掞級鐨勬(bi膩o) 婧�(zh菙n)涓績璺� a=100mm锛屽皬榻掕吉榻掓暩(sh霉) z1=20锛屽偝鍕�(d貌ng)姣� i=4锛涢€氶亷(gu貌)瀵�(sh铆)娓�(c猫)寰楀皬榻掕吉鐨勫熀鍦� 榻掕窛锛堝熀绡€(ji茅)锛夌偤 pb1鈮� 5.802mm銆傛眰锛� 锛�1锛夊叐榻掕吉鐨勫垎搴﹀湏鍗婂緫 r1銆� r2 鍙婃ā鏁�(sh霉) m锛涳紙5 鍒嗭級 锛�2锛夎嫢瀵�(sh铆)闅涘畨瑁濅腑蹇冭窛 a'=101mm锛屽叐榻掕吉鐨勭瘈(ji茅)鍦撳崐寰� r1'銆乺2'鍙婂殭鍚堣 伪'锛涳紙7 鍒嗭級 锛�3锛夊湪瀵�(sh铆)闅涘畨瑁濅腑蹇冭窛 a'=101mm 涓嬬殑闋傞殭 C銆傦紙2 鍒嗭級 涓冦€侊紙12 鍒嗭級鍦栫ず鐐轰竴闆诲嫊(d貌ng)鍗�?y猫)P(y谩ng)姗�(j墨)鍦�锛屾墍鏈夐綊杓潎鐐烘(bi膩o)婧�(zh菙n)榻掕吉锛屾ā鏁�(sh霉) m=4mm锛� 鍚勫€�(g猫)榻掕吉鐨勯綊鏁�(sh霉)鐐� z1= 24锛寊2=z2'=18锛寊3=z3'=21锛寊4=63锛寊5=18锛寊6=z6'=18銆� 瑭︽眰锛氾紙1锛夐綊鏁�(sh霉) z7=锛燂紙2 鍒嗭級 锛�2锛夊偝鍕�(d貌ng)姣� i17=锛燂紙10 鍒嗭級 绗竷椤屽湒 鍏� 鍏€侊紙14 鍒嗭級涓€閶煎埗娑插娌圭几锛屾补缂稿収(n猫i)寰� D=125mm锛屾补缂告补澹� p=2.5MPa锛堥潨 杓夛級锛岀几钃嬬敤 6 鍊�(g猫) M16 鐨勮灪閲樿伅(li谩n)鎺ュ湪缂搁珨涓�锛岃灪閲樺墰搴� C锛垏缂搁珨缂歌搵鍓涘害 C锛� 涔嬫瘮鐐� 1/4锛岃灪閲樻潗鏂欑殑鎬ц兘绛夌礆(j铆)鐐� 5.6 绱�(j铆)锛屽畨鍏ㄧ郴鏁�(sh霉) S锛�1.5銆傛牴鎿�(j霉)鑱�(li谩n)鎺ョ穵瀵嗘€� 瑕佹眰鍓╀綑闋�(y霉)绶婂姏 QP?锛�1.5F銆傝│鍒嗘瀽闋�(y霉)绶婂姏 QP 鎺у埗鍦ㄤ綍鑼冨湇鍏�(n猫i)鎵嶈兘婊胯冻姝よ伅(li谩n)鎺ョ殑 瑕佹眰锛� 鏅€氳灪绱嬪熀鏈昂瀵歌〃 锛堝柈浣� mm锛� 鍏ū鐩村緫 铻鸿窛 涓緫 灏忓緫 16 2 14.701 13.835 涔�銆侊紙12 鍒嗭級鏌愬柈鏍� V 甯跺偝鍕�(d貌ng)銆傚凡鐭ュ付鐨勫垵鎷夊姏 F0 =300N锛屽偝閬炵殑鏈夋晥鍦撳懆鍔� Fe =200N锛� 67.31vf ? ? e 锛岀穵閭婃媺鎳�(y墨ng)鍔� 蟽1 =5MPa锛屾澗閭婃媺鎳�(y墨ng)鍔� 蟽2 =2.5MPa锛岄洟蹇� 鎷夋噳(y墨ng)鍔� 蟽c =1.5MPa锛屽皬甯惰吉铏曞綆鏇叉噳(y墨ng)鍔� 蟽b1 =2.2MPa锛屽ぇ甯惰吉铏曞綆鏇叉噳(y墨ng)鍔� 蟽b2 =1.6MPa銆� 锛�1锛夎│鍒ゆ柗瑭插付鍌冲嫊(d貌ng)鏄惁鎵撴粦锛燂紙4 鍒嗭級 锛�2锛夎│瑷�(j矛)绠楀付鐨勬渶澶ф噳(y墨ng)鍔� 蟽max銆佹渶灏忔噳(y墨ng)鍔� 蟽min 鍙婃噳(y墨ng)鍔涘惊鐠�(hu谩n)鐗规€� r 銆傦紙8 鍒嗭級 鍗�銆侊紙10鍒嗭級鍦ㄥ湒绀猴紙绗崄椤屽湒鍦ㄨ│椤岀礄绗�6闋�(y猫)锛夌殑铦告】-鍦撴煴鏂滈綊杓�-閷愰綊杓笁 绱�(j铆)鍌冲嫊(d貌ng)绯荤当(t菕ng)涓�锛屽凡鐭ヨ澑妗跨偤涓诲嫊(d貌ng)浠�锛屼笖鎸夌収?q菒ng)D绀虹殑鏂瑰悜杞�(zhu菐n)鍕�(d貌ng)銆傝│鍦ㄥ湒涓婃(bi膩o)鍑猴細 锛�1锛夊悇鍊�(g猫)杌哥殑杞�(zhu菐n)鍚�锛涳紙3鍒嗭級 锛�2锛夌偤浣縄I銆両II杌告墍鎵垮彈杌稿悜鍔涙渶灏忔檪(sh铆)鏂滈綊杓�3銆�4鐨勮灪鏃嬬窔鏂瑰悜锛涳紙4鍒嗭級 锛�3锛夐綊杓�3鎵€鍙楃殑鍚勫€�(g猫)鍒嗗姏鐨勬柟鍚�銆傦紙3鍒嗭級 鍗佷竴銆侊紙12 鍒嗭級鏈変竴灏�(du矛)妯�(bi膩o)婧�(zh菙n)鐩撮綊鍦撴煴榻掕吉锛屾ā鏁�(sh霉) m=5锛屽ぇ灏忛綊鏁�(sh霉) z2=60锛寊1=25锛� YFa2=2.28锛孻Fa1=2.62锛孻sa2=1.73锛孻sa1=1.59锛孾蟽]F2=300MPa锛� [蟽]F1=320MPa锛� 骞朵笖瑷�(j矛)绠楀嚭 蟽F2=280MPa銆傦紙蹇界暐閲嶅悎搴︾殑褰遍熆銆傦級 锛�1锛夊叐鍊�(g猫)榻掕吉褰庢洸鐤插嫗寮�(qi谩ng)搴︽槸鍚﹁冻澶�? 锛�6鍒嗭級 锛�2锛夎嫢榻掑绯绘暩(sh霉)蠁d=1.2锛岃級鑽风郴鏁�(sh霉)K=1.5锛岀敱褰庢洸鐤插嫗寮�(qi谩ng)搴︽焙瀹氱殑鏈€澶у偝閬炶綁(zhu菐n) 鐭㏕鐐哄灏�锛燂紙6鍒嗭級 锛堥檮鍏紡锛� ][ 2 1 1 FSaFaF YYY mbd KT ?? ? ?? 锛� 鍗佷簩銆侊紙18 鍒嗭級鍦栫ず鏌愯桓閲囩敤涓€灏�(du矛)鍏�(n猫i)寰戠偤 35mm 鐨勮鎺ヨЦ鐞冭桓鎵挎敮鎵�銆傚凡鐭ュ叐 杌告壙鎵€鍙楃殑寰戝悜杓夎嵎鍒嗗垾鐐� R1锛�2000N锛孯2锛�3000N锛岃桓鍚戣級鑽� Fa =500N锛屽父婧� 涓嬪伐浣�锛屾矕鎿婅級鑽风郴鏁�(sh霉) fd =1.3锛岃桓鎵跨殑杞�(zhu菐n)閫� n=740r/min銆傝嫢瑕佹眰瑭插皪(du矛)杌告壙鐨勯爯(y霉) 鏈熷=鍛� Lh >5000h锛屾噳(y墨ng)閬镐互涓嬪洓绋桓鎵垮瀷铏�(h脿o)涓殑鍝竴鍊�(g猫)锛� (a)7207锛孋=22500N 锛涳紙b)6307锛孋=25800N锛� (c)7208锛孋=25800N 锛涳紙d)7307锛孋=32800N銆� 锛堟淳鐢熻桓鍚戝姏 S =0.68R锛宔 =0.68锛� A/R 鈮� e X=1 Y=0 e =0.68 A/R > e X=0.41 Y=0.87 绗崄浜岄鍦� 绗簲椤屽湒 Fa R2 R1 绗崄椤屽湒
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