140吨推钢机设计
 摘要
我设计的为齿条式推钢机，它工作可靠，推力和行程大，传动效率高，但设备较重，目前齿轮齿条式推钢机广泛应用。齿条式推钢机通过齿轮齿条的啮合传动把电能转化为动能，带动推杆完成推钢。设计方案包括推钢机的分类和特点，设计方案的确定；主传动系统的设计与计算，电动机计算校核，减速器的选择和联轴器的计算校核，包括齿轮-齿条啮合处齿轮强度校核计算，轴的强度计算，轴承的选择；然后进行了设备维修、安装、润滑及密封的设计，最后做了设备经济性能和可靠性能评价。
关键词：钢坯；推钢机；齿条式推钢机
A design for 140 tons of steel machine

Abstract
I designed a rack pusher, the reliable work, high transmission efficiency, thrust and large travel, but their heavy equipment, the gear rack type pushing steel machine widely used. rack type pusher through engaging transmission gear rack of the rotary motion of the motor into linear motion of the push rod rack, drive complete pusher, Design analysis describes the design scheme, including the determination of the pusher and classification and characteristics of the design; the design and calculation of main drive system, including the original design parameters, calculation and check of the motor, calculation and check of coupling and reducer; design and calculation of the main parts, including rack-and-pinion meshing gear strength calculation, calculation of the strength of the shaft, bearing selection and calculation, and the selection of the key and checking; and then the equipment repair, installation, lubrication and seal design, finally the reliability and economical evaluation of equipment.
Keywords: billet; pusher; rack type pusher
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