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目錄
第一篇 摘要………………............................................................................................1
第二篇 任務(wù)及要求……………………………………………………………………2
第三篇 總論……………………………………………………………………………3
第四篇 計(jì)算……………………………………………………………………………4
一 總體方案確定及基本參數(shù)…………………………………………………………4
1. 總體方案確定………………………………………………………………….……4
2. 基本參數(shù)………………………………………………………………..………..….4
二 抓斗計(jì)算……………………………………………………………………..……..4
1. 抓斗的幾何尺寸……………………………………………………...……………4
2. 滑輪組倍率………………………………………………………………………...6
3. 鋼絲繩計(jì)算……………………………………………………………………..….6
4. 滑輪直徑確定……………………………………………………………………...6
5. 上下橫梁軸線傾斜角…………………………………………………………..….7
6. 抓斗強(qiáng)度計(jì)算……………………………………………………………………...7
三 起升機(jī)構(gòu)……………………………………………………………………..……..10
1. 傳動(dòng)比計(jì)算…………………………………………………………………..…….10
2. 起升速度…………………………………………………………………………...10
3. 機(jī)械效率………………………………………………………………………..….10
4. 電動(dòng)機(jī)靜功率……………………………………………………………………...11
5. 電動(dòng)機(jī)軸的靜轉(zhuǎn)力矩…………………………………………..………………….11
6. 制動(dòng)器計(jì)算……………………………………………………………..………….11
7. 起動(dòng)時(shí)間…………………………………………………………...………………13
8. 制動(dòng)時(shí)間……………………………………………………………………….…..14
9. 卷筒裝置………………………………………………………………………...…14
四 起升機(jī)構(gòu)減速箱…………………………………………………………………....21
1. 軸的計(jì)算……………………………………………………………………..…….21
2. 齒輪校核…………………………………………………………….……………..32
五 運(yùn)行機(jī)構(gòu)……………………………………………………………...…………….36
1. 傳動(dòng)比計(jì)算……………………………………………………………….………..36
2. 運(yùn)行速度……………………………………………………………...……………37
3. 機(jī)構(gòu)效率………………………………………………………...…………………37
4. 運(yùn)行摩擦阻力………………………………………………………………...……37
5. 電動(dòng)機(jī)容量的初選……………………………………………………...…………38
6. 走輪輪壓…………………………………………………………………………...38
7. 驗(yàn)算起動(dòng)時(shí)間…………………………………………………………………..….38
8. 制動(dòng)器計(jì)算…………………………………………………………………..…….39
9. 電動(dòng)機(jī)最大力矩…………………………………………………….……………..40
10. 驗(yàn)算電動(dòng)機(jī)打滑……………………………………………….…………………..40
六 編制程序……………………………………………………………..……………..42
第五篇 結(jié)束語……………………………………………………………………...….46
參考文獻(xiàn)………………..………………………………………...…………………….50
第一篇 摘要
摘要
起重機(jī)是一種作循環(huán)、間歇運(yùn)動(dòng)的機(jī)械。一個(gè)工作循環(huán)包括：取物裝置從取物地把物品提起，然后水平移動(dòng)到指定地點(diǎn)降下物品，接著進(jìn)行反向運(yùn)動(dòng)，使取物裝置返回原位，以便進(jìn)行下一次循環(huán)。
通常，起重機(jī)械由起升機(jī)構(gòu)(使物品上下運(yùn)動(dòng))、運(yùn)行機(jī)構(gòu)(使起重機(jī)械移動(dòng))、變幅機(jī)構(gòu)和回轉(zhuǎn)機(jī)構(gòu)(使物品作水平移動(dòng))，再加上金屬機(jī)構(gòu)，動(dòng)力裝置，操縱控制及必要的輔助裝置組合而成。
在建橋工程中所用的起重機(jī)械，根據(jù)其構(gòu)造和性能的不同，一般可分為輕小型起重設(shè)備、橋式類型起重機(jī)械和臂架類型起重機(jī)三大類。輕小型起重設(shè)備如：千斤頂、葫蘆、卷揚(yáng)機(jī)等。橋架類型起重機(jī)械如梁式起重機(jī)、龍門起重機(jī)等。臂架類型起重機(jī)如固定式回轉(zhuǎn)起重機(jī)、塔式起重機(jī)、汽車起重機(jī)、輪胎、履帶起重機(jī)等。
關(guān)鍵詞：起重機(jī)、循環(huán)、裝置、動(dòng)力裝置
abstract
The derrick is a kind of machine that makes the circulation, intermittent sport.A work includes circularly:Take the thing device from take the thing ground to bring up the product, then the level move to specify the location to decline product, carry on immediately after anti- to sport, make take the thing device to return the home position, in order to carry on next circulate.
Usually, the derrick from rise to rise the organization( make product exercised up and down), circulate the organization( make the derrick move) and become an organization and turn round the organization( make the product make the level ambulation), and the metals organization, the motive equip, the assistance that manipulate the control and necessities equips to combine.
In set up the bridge engineering the derrick use, construct according to it and the dissimilarity of the function, can is divided into a heavy equipments, the bridge type type derrick and a type of arm derrick three major types generally.A heavy equipments such as:Jack, bottle gourd, a 揚(yáng) machine etc..A type of bridge derrick ,such as beam type derrick, Dragon gate derrick etc.,.A type of arm derrick such as fix the type to turn round the derrick, tower type derrick, automobile derrick, tire, track derrick etc..
Key Words：derrick、circulation、machine、the motive equip
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