机械5

栏板起重运输车结构设计 摘要 本次设计的题目是栏板起重运输车结构设计。其目的是根据特殊用途车辆的原始特性和性能来降低生产成本并提高生产质量。 此次设计的关键在于比较分析栏板起重运输车的后栏板起重装置可以采用的方案，并一一列举出各项方案的优缺点，最终选择最优方案。 该设计在已经翻阅许多关于栏板起重运输车资料的基础上，透彻的分析了栏板起重运输车辆结构设计的总体方案，最主要的设计部分为底盘的选取，举升机构的设计，液压系统的选型以及后栏板装置的设计。通过对底盘型号的的选择，为确定整车性能参数打下基矗在此基础上，详细分析了举升机构的运动学，确定并且详细的检查了举升机构各部分的尺寸和参数是否符合标准。液压系统的用途则是用于控制每个可以活动的部件以实现货物起升装卸的功能。通过计算和选择各种液压元件，为的是确定系统中使用的液压元件的类型更为准确。确定了栏板起重运输车的一般参数。对改装车辆的性能进行分析和计算校核，确定其是否符合国家标准要求。 关键词：；后栏板；起重装置；升降机构；液压系统 ABSTRACT The title of this desig
n is the structural desig
n of the lifti
ng a
nd tra
nsportatio
n trucks. Its purpose is to reduce productio
n costs a
nd improve productio
n quality based o
n the origi
nal characteristics a
nd performa
nce of special purpose vehicles. The key to this desig
n is to compare a
nd a
nalyze the solutio
ns that ca
n be adopted for the tailgate lifti
ng devices of the lifti
ng trucks, a
nd to list the adva
ntages a
nd disadva
ntages of each solutio
n, a
nd fi
nally select the optimal solutio
n. The desig
n has bee
n based o
n a lot of i
nformatio
n o
n the lifti
ng trucks of the corrugated plate. It thoroughly a
nalyzes the overall desig
n of the structure desig
n of the corrugated lifti
ng tra
nsport vehicles. The most importa
nt part of the desig
n is the selectio
n of the chassis a
nd the desig
n of the lifti
ng mecha
nism. Selectio
n of hydraulic system a
nd desig
n of the tailgate device. The selectio
n of the chassis model lays the fou
ndatio
n for determi
ni
ng the performa
nce parameters of the vehicle. O
n this basis, the ki
nematics of the lifti
ng mecha
nism was a
nalyzed i
n detail, a
nd the dime
nsio
ns a
nd parameters of each part of the lifti
ng mecha
nism were determi
ned a
nd checked i
n detail to meet the sta
ndards. The purpose of the hydraulic system is to co
ntrol each movable part to achieve lifti
ng a
nd loadi
ng of the goods. By calculati
ng a
nd selecti
ng various hydraulic compo
ne
nts, it is more accurate to determi
ne the type of hydraulic compo
ne
nts used i
n the system. Determi
ned the ge
neral parameters of the hoisti
ng truck. A
nalyze a
nd calculate the performa
nce of modified vehicles to determi
ne whether they meet the requireme
nts of
natio
nal sta
ndards. Keyword:Tailgate；Hauli
ng-up device；Lifti
ng mecha
nism；Hydraulic system 目录 摘要I ABSTRACT II 1.绪论1 1.1课题研究的目的意义1 1.2后栏板起重运输车国内外研究概况1 1.3设计的主要内容与技术路线2 2.后栏板起重运输车方案设计与分析3 2.1后栏板起重运输车的结构与分类3 2.2后栏板起重汽车举升机构的分类与选型5 2.2.1单缸对中式升降机构6 2.2.2双缸对称式升降机构7 2.3后栏板起重装置的液压系统10 2.3.1单缸驱动栏板起重装置的液压系统10 2.4后栏板起重装置动力源结构型式12 根据小批量生产成本最小化的原则，本设计中的后轨提升装置以力源为动力源，带动四连杆机构的运动，使得承载平台完成各种动作，如上升和下降。 12 2.5安全机构12 2.6本章小结13 3.后栏板起重运输车底盘的选取14 3.1底盘的选取14 3.1.1汽车底盘选型要求14 3.1.2底盘选型14 3.1.3底盘的选取14 3.2选用的底盘主车架的主要尺寸16 3.3栏板起重车质量参数的估算16 3.4本章小结17 4.车厢的结构设计18 4.1车厢的结构设计18 4.2本章小结21 5.后栏板起重车结构设计22 5.1副车架的改装设计22 5.1.1副车架设计22 5.1.2副车架选材22 5.2升降机构支架的设计22 1、支架的外形设计22 5.3举升机构各杆的初步设计计算23 5.3.1升降杆的长度计算23 5.3.2拐臂半径r和液压缸的初始长度L1 24 5.3.3摆动液压缸的校核25 5.4本章小结26 6.液压系统的设计与选型27 6.1液压系统设计分析27 6.1.1液压缸的选型与设计27 6.1.2液压泵的选型计算28 6.2本章小结30 7.整车性能计算31 整车的性能计算需要包括最高车速，最大爬坡度，燃油经济性和稳定性等。... 31 7.1汽车最高车速的计算31 7.2最大爬坡度计算36 7.3汽车燃油经济性的计算37 7.4后栏板起重运输车装卸时稳定性计算38 7.5本章小结39 结论40 参考文献41 致谢42 TAILGATE LIFTING DEVICE STRUCTURE AND DESIGN 43 1.栏板起重装置的发展48 2.栏板起重装置的基本原理49 3.动力系统49 4.动力传递形式及作用点49 5.CD杆的转动50 6.栏板起重装置技术参数的确定50