跨度28m橋式起重機橋架金屬結構設計畢業(yè)論文-在線瀏覽
2024-08-08 20:55本頁面
【正文】 5)偏斜運行側向力6)左側端梁總靜輪壓1) 垂直載荷2)移動載荷作用下主梁的內力3)水平位置4) 強度5)主梁跨端的切應力6) 主梁疲勞強度7)主梁穩(wěn)定性1）垂直載荷2）水平載荷3）強度4）疲勞強度5）端梁中央拼接截面6）穩(wěn)定性7）端梁拼接8）翼緣拼接9）腹板拼接10）端梁拼接強度1）橋架的垂直靜剛度2）水平動剛度 第一章 橋式起重機金屬結構設計參數(shù)表11 設計參數(shù)起重機類型通用工作級別A6軌道放置中軌橋架形式雙梁50/10t28m起升機構主起升副起升額定起重量（噸）5010起升高度(米)1218起升速度(米/分)工作級別M6M5運行結構大車小車輪距（米）5軌距（米）28速度（米/分）——工作級別M6M5輪壓（MPa）441軌道型號QU80P43第二章 總體設計=（）L=（）=~ m根據(jù)小車軌距和中軌箱型梁寬度以及大車運行機構的設置，取=5 m端梁全長B=高度h=（）L=1821~1500 mm 取腹板高度 =1600 mm腹板厚度 =6 mm翼緣板厚度 =24 mm主梁總高度 =+2=1648 mm主梁寬度 b=(~)=648~810 mm字腹板外側間距 b=760 mm=425 mm 且=540 mm上下翼緣板相同為24 mm600 mm主梁端部變截面長取 d=2350 mm.圖21 雙梁橋架結構第三章 主端梁截面積幾何性質圖31 主梁與端梁截面a) 主梁截面 A=(60024+16006)2 =慣性矩= = mm4= = mm4b)端梁截面A= =36160 mm2== = mm4= = mm4第四章 載荷主梁自重載荷 = = = N小車軌道重= = N/m欄桿等重量=g= =981 N/m主梁的均布載荷 =++= N/m起升載荷為 =g = =49000 N小車自重 ==170422 N小車自重載荷 =mg = = N小車重力產生的靜輪壓和= = =50666 N= = N額定起升載荷產生的和P01= = NP02= = N=+= N= P02+= N小車輪壓=+= N空載輪壓 = N= N1=2=1+ =1+ ==1.+ =+ =h=1 mm,接頭高度差大小車都是4個車輪，其中主動輪各占一半，按車輪打滑條件確定大小車運行的慣性力一根主梁上的小車慣性力為== N大車運行起制動慣性力（一根主梁上）為== N= = N/m主梁跨端設備慣性力影響力小，忽略一根主梁的重量力=() = N一根端梁單位長度的重量= = = N一根端梁的重量為=B = = N一組大車運行機構的重量（兩組對稱配置）為=g=5623/= N左側端梁總靜輪壓按圖41計算圖41 端梁總輪壓計算= =（490000+170422）+++ = N由=28/5==側向力= = = N 滿載小車在主梁左端極限位置左側端梁總靜輪壓= =側向力 = = N估算大車輪壓P=18 t選取大車車輪直徑為800 mm,軌道為QU80. 扭轉載荷中軌梁扭轉載荷較小，且方向相反，可忽略。via CAD, ploting and calculation can make good use of powerfull puter, try hard for a high efficiency design. I knew the various of design methods, newest machine design methods both here and abroad also found various of good data.Key Words: bridge crane。AbstractThe project designs metal framework of bridge crane in use of allowable stress method and CAD. At first , I chose size assumably. Then, proofreaded the size. If the proof was not passed, must choose the size again up to pass the proof. If the proof was passed, it could carry on the specific structural design. At last, it’s plot and clean up the calculation process. Designed to make reference to the various of data in the process, make use of various paths, work hard to make use of the various of condition to plete this design in reason. I considered various design projects, discussed earnestly, calculated time after time, try hard for a reasonable design。通過采取計算機輔助設計方法以及參考前人的先進經驗, 力求有所創(chuàng)新。由于橋架的初校是在草稿中列出，在設計說明書中不予記錄，僅記載橋架的精校過程。然后計算出主梁和端梁的自重載荷，再用此載
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