变频电机驱动桥式起重机起升动载系数研究机械工程专业论文.docxVIP

变频电机驱动桥式起重机起升动载系数研究Research 变频电机驱动桥式起重机起升动载系数研究 Research on Dynamic Cofficient of Lifting Driven by Variable-Frequency Motor of Overhead Crane Abstract Overhead crane iS a kind of material handling lifting transportation machinery and equipment，widely used in the equipment manufacturing industry，transportation and logistics industry，shipbuilding industry，water conservancy and hydropower construction，the construction of nuclear power pillar industry of national economy．In the actual crane design process，the actual value of the dynamic load coefficient selection iS very important．If the value of dynamic load coefficient selected iS too large．willlcad to an increase in weight from the lifting mechanism；if the value of dynamic load coemcient selected too small．will directly affect the life of the crane mechanism．At present，the common equipment in overhead crane iS frequency conversion motor．the design code of China’S national crane dynamic load coefficient of the recommended calculation method iS based on a common set of motor．SO the reconamended values of dynamic 10ad coefficient there iS outdated and unreasonable．If you still continue tO use the calculation method of standard．willincrease the use of equipment Cost，cause lmge waste． Based on the 32 tons of overhcad crane as the research object，the lifting mechanism of ADAMS and MATLAB so胁are to establish the united simulation model．For different forms of motor drive and load working condition for ioint simulation，combining with the expel’inaents of concrete analysis smrmaary bridge crane dynamic load coefficient change rule when the frequency conversion motor drive．For the future design and calculation of dynamic load coefficient selection of overhead crane to provide certain reference basis．The main contents are as follows： (1)Introduce the selection of dynamic 10ad coefficient for the importance of overhead crane design?and when the bridge crane adopts frequency conversion motor drive the existing problems and the in