基于3D打印技术的铸造起重机车架轻量化研究

铸造起重机,是依靠沿厂房轨道方向的纵向移动、小车的横向移动和吊钩的升降运动来进行搬运工作的机器。其中小车架作为起重机的主要部件之一,约占起重机总重量的16%,起着主要的承载作用,因此设计出合理的小车架结构对起重机整体的安全性、经济性有很重要的意义。以10 t铸造起重机车架为研究对象,设计以3D打印技术为主要加工方法的新型车架。首先,以车架钢板为坐标平面建立坐标系,并根据车架上减速器座,电机座,定滑轮等放置的位置为坐标点输入坐标系,确定切割的位置、尺寸,结合ANSYS有限元分析软件,通过分析车架整体结构的应力及变形情况,对车架进行局部优化。结果表明:以3D打印技术进行切割设计的起重机车架与原起重机车架强度相仿,重量减少169 kg,减重部分占改进前车架重量的17.4%。

Lightweight research on casting crane frame based on 3D printing technology

Casting crane is a machine that relies on longitudinal movement along the direction of the factory track, lateral movement of the trolley and lifting movement of the hook. The small frame is one of the main components of the crane which accounts for 16% of the total weight of the crane and plays a major role in carrying. Therefore, designing a reasonable small frame structure is of great significance to the overall safety and economy of the crane. This paper takes 10 tons of cast crane frame as the research object and designs a new frame with 3D printing technology as the main processing method. Firstly, the coordinate system is established with the frame steel plate as the coordinate plane, and the coordinate system is input according to the position of the reducer seat, the motor base, the fixed pulley, etc. on the frame, and the position and size of the cutting are determined, combined with ANSYS finite element analysis. The software optimizes the frame by analyzing the stress and deformation of the overall structure of the frame. The results show that the crane frame designed by 3D printing technology has the same strength as the original crane frame and the weight loss is 169 kg, and the weight loss part accounts for 17.4% of the weight of the improved front frame.