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姘ｇ几鐨勯伕鍨嬫椹� 姘ｇ几鐨勯伕鍨嬫噳(y墨ng)鏍规摎(j霉)宸ヤ綔瑕佹眰鍜屾浠�, 姝ｇ⒑閬告搰姘ｇ几鐨勯鍨�. 涓嬮潰浠ュ柈娲诲妗块洐浣滅敤缂哥偤渚嬩粙绱规埃缂哥殑閬稿瀷姝ラ. (1)姘ｇ几缂稿緫.鏍规摎(j霉)姘ｇ几璨�(f霉)杓夊姏鐨勫ぇ灏忎締(l谩i)纰哄畾姘ｇ几鐨勮几鍑哄姏,鐢辨瑷�(j矛)绠楀嚭姘ｇ几鐨勭几寰�. (2)姘ｇ几鐨勮绋�.姘ｇ几鐨勮绋嬭垏浣跨敤鐨勫牬(ch菐ng)鍚堝拰姗�(j墨)妲�(g貌u)鐨勮绋嬫湁闂�(gu膩n),浣嗕竴鑸笉閬哥敤婊胯绋�. (3)姘ｇ几鐨勫挤(qi谩ng)搴﹀拰绌�(w臎n)瀹氭€ц▓(j矛)绠� (4)姘ｇ几鐨勫畨瑁濆舰寮�.姘ｇ几鐨勫畨瑁濆舰寮忔牴鎿�(j霉)瀹夎浣嶇疆鍜屼娇鐢ㄧ洰鐨勭瓑鍥犵礌姹哄畾.涓€鑸儏娉� 涓�,閲囩敤鍥哄畾寮忔埃缂�.鍦ㄩ渶瑕侀毃宸ヤ綔姗�(j墨)妲�(g貌u)閫ｇ簩(x霉)鍥炶綁(zhu菐n)鏅�(sh铆)(濡傝粖搴�,纾ㄥ簥绛�) ,鎳�(y墨ng)閬哥敤鍥炶綁(zhu菐n)姘ｇ几. 鍦ㄦ椿濉炴】闄ょ洿绶氶亱(y霉n)鍕�(d貌ng)澶�,閭勯渶浣滃湏寮ф摵鍕�(d貌ng)鏅�(sh铆),鍓囬伕鐢ㄨ桓閵峰紡姘ｇ几.鏈夌壒娈婅姹傛檪(sh铆),鎳�(y墨ng)閬哥敤鐩� 鎳�(y墨ng)鐨勭壒绋埃缂�. (5)姘ｇ几鐨勭珐娌栬缃�.鏍规摎(j霉)娲诲鐨勯€熷害姹哄畾鏄惁鎳�(y墨ng)閲囩敤绶╂矕瑁濈疆. (6)纾佹€ч枊(k膩i)闂�(gu膩n).鐣�(d膩ng)姘ｅ嫊(d貌ng)绯荤当(t菕ng)閲囩敤闆绘埃鎺у埗鏂瑰紡鏅�(sh铆),鍙伕鐢ㄥ付纾佹€ч枊(k膩i)闂�(gu膩n)鐨勬埃缂�. (7)鍏跺畠瑕佹眰.濡傛埃缂稿伐浣滃湪鏈夌伆濉电瓑鎯″姡鐠�(hu谩n)澧冧笅,闇€鍦ㄦ椿濉炴】浼稿嚭绔畨瑁濋槻濉电僵. 瑕佹眰鐒�(w煤)姹℃煋鏅�(sh铆)闇€閬哥敤鐒�(w煤)绲︽补鎴栫劇(w煤)娌规饯(r霉n)婊戞埃缂�. 2.姘ｇ几鐩村緫瑷�(j矛)绠� 姘ｇ几鐩村緫鐨勮ō(sh猫)瑷�(j矛)瑷�(j矛)绠楅渶鏍规摎(j霉)鍏惰矤(f霉)杓夊ぇ灏�,閬�(y霉n)琛岄€熷害鍜岀郴绲�(t菕ng)宸ヤ綔澹撳姏渚�(l谩i)姹哄畾.棣栧厛,鏍规摎(j霉) 姘ｇ几瀹夎鍙婇﹨(q奴)鍕�(d貌ng)璨�(f霉)杓夌殑瀵�(sh铆)闅涘伐娉�,鍒嗘瀽瑷�(j矛)绠楀嚭姘ｇ几杌稿悜?q奴)宥婬璨�(f霉)杓� F,鍐嶇敱姘ｇ几骞冲潎閬�(y霉n)琛岄€熷害 渚�(l谩i)閬稿畾姘ｇ几鐨勮矤(f霉)杓夌巼 胃,鍒濇閬稿畾姘ｇ几宸ヤ綔澹撳姏(涓€鑸偤 0.4 MPa锝�0.6 MPa) ,鍐嶇敱 F/胃, 瑷�(j矛)绠楀嚭姘ｇ几鐞嗚珫鍑哄姏 Ft, 鏈€鍚庤▓(j矛)绠楀嚭缂稿緫鍙婃】寰�, 骞舵寜妯�(bi膩o)婧�(zh菙n)鍦撴暣寰楀埌瀵�(sh铆)闅涙墍闇€鐨勭几寰戝拰妗垮緫. 渚嬮 姘ｇ几鎺ㄥ嫊(d貌ng)宸ヤ欢鍦ㄦ按骞冲皫(d菐o)杌屼笂閬�(y霉n)鍕�(d貌ng).宸茬煡宸ヤ欢绛夐亱(y霉n)鍕�(d貌ng)浠惰唱(zh矛)閲忕偤 m=250 kg,宸ヤ欢鑸� 灏�(d菐o)杌岄枔鐨勬懇鎿︾郴鏁�(sh霉) =0.25,姘ｇ几琛岀▼ s 鐐� 400 mm,缍�(j墨ng) 1.5 s 鏅�(sh铆)闁撳伐浠堕亱(y霉n)鍕�(d貌ng)鍒颁綅,绯荤当(t菕ng) 宸ヤ綔澹撳姏 p = 0.4 MPa,瑭﹂伕瀹氭埃缂哥洿寰�. 瑙�:姘ｇ几瀵�(sh铆)闅涜桓鍚戣矤(f霉)杓� F = mg =0.25 脳 250 脳 9.81=613.13 N 姘ｇ几骞冲潎閫熷害 s 400 v= = 鈮� 267 mm/s t 1.5 閬稿畾璨�(f霉)杓夌巼 胃 =0.5 鍓囨埃缂哥悊璜栬几鍑哄姏 F1 = F 闆欎綔鐢ㄦ埃缂哥悊璜栨帹鍔� 胃 = 613.13 = 1226.6 N 0.5 1 F1 = 蟺D 2 p 4 姘ｇ几鐩村緫 鎸夋(bi膩o)婧�(zh菙n)閬稿畾姘ｇ几缂稿緫鐐� 63 mm. D= 4 Ft 4 脳1226.3 = 鈮� 62.48 mm 蟺p 3.14 脳 0.4
