哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院（論文）I摘要本文主要研究了四輪轉(zhuǎn)向傳動系統(tǒng)的基本結(jié)構(gòu)和工作原理，并對四輪轉(zhuǎn)向傳動路線進行了簡要分析。以此為理論基礎(chǔ)，以某汽車的相關(guān)參數(shù)設(shè)計了四輪轉(zhuǎn)向轉(zhuǎn)向器。包括前輪轉(zhuǎn)向器的設(shè)計計算，后輪轉(zhuǎn)向執(zhí)行器的設(shè)計，齒條等強度的計算。四輪轉(zhuǎn)向傳動系主要是通過車速傳感器、前輪轉(zhuǎn)角傳感器、前輪轉(zhuǎn)速傳感器、方向盤轉(zhuǎn)角傳感器、后輪轉(zhuǎn)角傳感器、后輪轉(zhuǎn)速傳感器，發(fā)送信號到四輪轉(zhuǎn)向控制器內(nèi)，信號經(jīng)過處理，得出后輪所需的轉(zhuǎn)角大小及方向，控制執(zhí)行器完成轉(zhuǎn)向。此系統(tǒng)可以改善車輛低速的轉(zhuǎn)向靈活性和高速時的操縱穩(wěn)定性，使汽車在轉(zhuǎn)向時響應(yīng)快，轉(zhuǎn)向能力強，直線行駛穩(wěn)定。前輪轉(zhuǎn)向器是四輪轉(zhuǎn)向的基礎(chǔ)部件，是電機助力的齒輪齒條轉(zhuǎn)向器。后輪執(zhí)行器是驅(qū)動后輪轉(zhuǎn)向的主要部件。通過對前輪轉(zhuǎn)向器和后輪執(zhí)行器的設(shè)計，為四輪轉(zhuǎn)向技術(shù)整體設(shè)計提供了基礎(chǔ)。關(guān)鍵詞四輪轉(zhuǎn)向，齒輪齒條電動助力轉(zhuǎn)向器，后輪轉(zhuǎn)向執(zhí)行器哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院（論文）IIAbstractThispapermainlystudiesisthefour-wheelsteeringtransmissionsystemthebasicstructureandworkingprinciple,andthefour-wheelsteeringtransmissionroutesarebrieflyanalyzed.Thistheory,withacarrelatedparametersofthefour-wheelsteeringtransmissionsystemwasdesigned.Includingfrontwheelsteeringgeardesigncalculation,rearwheelactuatordesignstrengthcalculation,rack.Four-wheelsteeringtransmissionsystemisprimarilythroughspeedsensor,frontwheelAnglesensor,frontwheelspeedsensor,steeringwheelAnglesensor,rearAnglesensor,rearLordAnglesensor,rearvice,rotationalspeedsensorsendsasignaltothefour-wheelsteeringcontrollerinside,signalthroughprocessing,drawtherearrequiredcornersizeanddirection,controlactuatorfinishturning.Thissystemcanimprovevehiclespeedsteeringflexibilityandhighspeedcontrolstabilityof,makecarsinsteeringresponsequickly,steeringcapabilityisstrong,runstraightstability.Frontwheelsteeringgearisthebasiccomponents,four-wheelsteeringmotorhydraulicallyrack-andpinionsteeringgearRearactuatorsaredriverearwheelsteeringthemajorcomponents.Throughthefrontwheelsteeringgearandrearactuatorisdesignedforfour-wheelsteeringtechnologyintegraldesignprovidesthebasis.KeywordsFour-wheelsteeringgearrackofelectricpowersteeringgear,rearwheelactuators哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院（論文）III目錄摘要.IAbstract.II目錄.III第一章緒論.-1-第二章設(shè)計方案選擇.-7-2.1各傳感器位置確定.-7-2.2轉(zhuǎn)向機構(gòu)的設(shè)計要求.-8-2.3轉(zhuǎn)向梯形設(shè)計.-9-2.4本章小結(jié).-11-第三章齒輪齒條電動助力轉(zhuǎn)向器設(shè)計計算.-11-3.1轉(zhuǎn)向器的效率.-11-3.2轉(zhuǎn)向器正效率+.-11-3.3轉(zhuǎn)向器逆效率-.-12-3.4傳動比的變化特性.-13-3.4.1力傳動比與角傳動比的關(guān)系.-14-3.5參數(shù)選擇.-16-3.5.1轉(zhuǎn)向輪側(cè)偏角計算.-17-3.6轉(zhuǎn)向系載荷確定.-18-3.7轉(zhuǎn)向器的主要元件設(shè)計.-21-3.7.1選擇齒輪齒條材料.-21-3.7.2齒輪齒條基本參數(shù).-23-3.7.3轉(zhuǎn)向橫拉桿及其端部.-24-3.7.4齒條調(diào)整.-25-3.8齒輪齒條轉(zhuǎn)向器轉(zhuǎn)向橫拉桿的運動分析.-26-3.9齒輪齒條傳動受力分析.-27-3.10彈簧的設(shè)計計算.-32-哈爾濱工業(yè)大學(xué)華德應(yīng)用技術(shù)學(xué)院（論文）IV3.11齒輪軸軸承的校核.-35-3.12電機選擇.-36-3.12.1助力轉(zhuǎn)矩的計算.-36-3.12.2電動機參數(shù)的選擇和計算.-37-3.13本章小結(jié).-38-第四章后輪轉(zhuǎn)向執(zhí)行器設(shè)計計算.-39-4.1執(zhí)行器結(jié)構(gòu)設(shè)計.-39-4.2齒條設(shè)計