KINETIC MODELLING AND PERFORMANCE ANALYSIS OF THE FOUR-POST-FRAME LIFTING MECHANICAL SYSTEM

IntroductionWith the increasing requirements ofexpandingthe production- scale of petrochemical products,the present low- throughput (6 0 0 bags/ hour) [1] ofhomemade palletizer becomes a barrier to developforwardly. How to realize the high- speed palletiza-tion is a troublesome problem but required to besolved as soon as posible. The main problem gen-erated due to high- speed palletizing is vibrationproblem of the four- post- frame and lifter,whichnot only worsen the shape of pallet- load,but …     

“霍克死亡蛇”：澳大利亚军队新锐轻型轮式装甲防护车

2009年11月,法国泰利斯公司澳大利亚分公司在澳大利亚装甲防护车展会上展出了名为＂霍克死亡蛇＂的轻型轮式装甲防护车的原型车。＂霍克死亡蛇＂是澳洲的一种毒蛇,蛇身最长可达2米多,其与＂太攀蛇＂、＂棕伊澳蛇＂等大型毒蛇相比,虽然体形要小,但行动灵活而迅速,且毒性很大,被当地土著人称为＂死神＂。澳大利亚将一种轻型轮式装甲防护车命名为＂霍克死亡蛇＂,就是要强调这种车的行动能力和威慑力。