汽車起重機(jī)總體及支腿機(jī)構(gòu)設(shè)計(jì)
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- 汽車起重機(jī)總體及支腿機(jī)構(gòu)設(shè)計(jì)
摘 要
汽車起重機(jī)是輪式起重機(jī)的一種。通常習(xí)慣把裝在通用或?qū)Ｓ幂d重汽車底盤上的起重機(jī)稱為汽車起重機(jī)。汽車起重機(jī)的金屬結(jié)構(gòu)以回轉(zhuǎn)平臺(tái)為界，分為上車和下車兩部分。上車部分由起重臂架、人字架、配重、回轉(zhuǎn)平臺(tái)和起重司機(jī)室組成；下車部分由車架、汽車司機(jī)室和支腿組成。上車部分可以相對(duì)下車部分旋轉(zhuǎn)。起重機(jī)的金屬結(jié)構(gòu)將起重機(jī)連接成一個(gè)整體，承受起重機(jī)的自重以及作業(yè)時(shí)的各種外載荷。工作半徑不小于270°，雙H型支腿同步伸縮臂式汽車起重機(jī)。其額定起重量為10T,系統(tǒng)正常工作壓力為16MPa。文中通過對(duì)QY10起重機(jī)進(jìn)行總體性能分析，最終確定了一些結(jié)構(gòu)參數(shù)，并對(duì)起重機(jī)總機(jī)進(jìn)行了的牽引力和穩(wěn)定性計(jì)算。
支腿在起重機(jī)工作時(shí)，支撐著整個(gè)機(jī)重和外載荷重量，要求安全可靠，如發(fā)生支腿自縮，就有使整個(gè)起重機(jī)傾翻的危險(xiǎn)。因此在支腿機(jī)構(gòu)設(shè)計(jì)時(shí)，著重從安全保障方面入手，在支腿油路中設(shè)置了雙向液壓鎖元件，且直接安裝在垂直液壓缸上，防止管路破壞或液壓缸活塞密封圈損壞時(shí)發(fā)生事故，而且當(dāng)行駛或停放時(shí)，支腿也不會(huì)在重力作用下自動(dòng)下降。為了提高效率及整機(jī)調(diào)平需要，單個(gè)垂直液壓缸即可同時(shí)伸縮又可單獨(dú)伸縮。為了保證結(jié)構(gòu)有較好的密封性，設(shè)計(jì)使用了性能較為可靠的由派克公司生產(chǎn)的密封圈。另外對(duì)于橫向伸縮箱的截面形狀也進(jìn)行了可靠性驗(yàn)算。
關(guān)鍵詞：汽車起重機(jī) 支腿機(jī)構(gòu) 液壓
ABSTRACT
Truck Crane is a kind of crane. It is usually used in general or put on the special truck chassis crane .It called cranes. The truck crane metal structure Divided into two parts of the truck with platform for boundary. Top truck is composed of Crane Boom, Renzi Jia, weight, rotary platform and crane cab; The lower part of truck is composed of Frame, drivers room and leg.Top truck and lower truck can be relative rotation. Crane metal structure will be connected into a whole,And crane under the crane self-reverence and various load at working. The working radius is not less than 270 °, H-double outrigger synchronized telescopic boom truck crane. The rated weight of the machine is 10T, the normal system pressure is 16MPa.Based on the analysis to the total function of the QY10truck crane ,we at last assurance some structure parameters ,and do calculations of the loading dint and stability of the whole machine.
When the crane working, the Outrigger will support the entire weight of the machine and the outside loading, so safety and reliability is required. If the outrigger retracted itself, there is a danger that the whole truck would turn over. Therefore, in outrigger designing, it should be focused on the aspects of safety.The outrigger Circuit set up a two-way hydraulic lock components, and installed directly on the vertical hydraulic cylinder, to prevent from the accident when pipe or hydraulic cylinder piston ring is damaged. And when driving or parked, the outrigger will not automatically fall under gravity. In order to improve efficiency and leveling needs, the vertical telescopic hydraulic cylinders can stretch and shrink together or singly. And the credibility calculate to the shape of the horizontal box is done at last.
Key words: truck crane Outrigger Agency Hydraulic
第一章 概述 1
1.1引言 1
1.2國(guó)內(nèi)外汽車起重機(jī)的發(fā)展趨勢(shì) 3
1.3國(guó)內(nèi)汽車起重機(jī)產(chǎn)品差距主要表現(xiàn) 6
1.4汽車起重機(jī)產(chǎn)品的發(fā)展趨勢(shì) 7
第二章 總體設(shè)計(jì) 9
2.1總體參數(shù)的確定 9
2.2汽車起重機(jī)底盤類型的選擇 10
2.3設(shè)備組成及其功能分析 13
2.4汽車起重機(jī)移動(dòng)性能分析 15
2.5對(duì)整機(jī)進(jìn)行牽引計(jì)算 17
第三章 液壓系統(tǒng)的設(shè)計(jì) 18
3.1液壓系統(tǒng)型式 18
3.2液壓系統(tǒng)的控制 20
3.3液壓系統(tǒng)設(shè)計(jì) 21
3.4支腿油路的設(shè)計(jì) 26
第四章 支腿機(jī)構(gòu)的設(shè)計(jì)和校核計(jì)算 27
4.1支腿形式的選擇 27
4.2支腿壓力的計(jì)算 28
4.3垂直支腿液壓缸的設(shè)計(jì)計(jì)算 33
4.4液壓缸結(jié)構(gòu)參數(shù)的計(jì)算 35
4.5液壓缸的連接計(jì)算 36
4.6 活塞桿穩(wěn)定性驗(yàn)算 37
4.7 橫向伸縮箱截面的計(jì)算 38
4.8 支腿垂直液壓缸與伸縮箱的連接 40
第五章 支腿工作穩(wěn)定性分析及操作工藝流程分析 43
5.1支腿工作穩(wěn)定性 43
5.2支腿機(jī)構(gòu)打軟腿的危害與防止措施分析 44
5.3 起重機(jī)操作工藝流程分析 45
參考文獻(xiàn)
畢業(yè)設(shè)計(jì)小結(jié)
附：英文翻譯
英文原文
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