The scraper is the core of the conveyor and its vulnerable part. The problem of bending fracture of common welding scrapers in actual production is under consideration. SolidWorks and ANSYS finite element analysis software were used to construct the three-dimensional model for simulation analysis, and the existing structure was improved and optimized. The comparison results showed: well-type stiffener contributes to improvement of the overall strength and rigidity of the scraper. Before optimization, the maximum equivalent stress on the press buckle part of the scraper was 310 MPa, and after optimization it dropped to 230 MPa, i.e., decreased by 26%, and the stress value of one side of stiffener was 170 MPa, with certain bending resistance. After optimization, the stress distribution of the scraper was uniform, with solving the problem of stress concentration. After optimization, the overall safety factor of the scraper increased by nearly 15%, improving its life. Integrity of the optimized scraper was nearly 100%, as compared to that before optimization under the same conditions, which confirmed the validity of scraper optimization.

刮板是输送机的核心，也是其易损部分。实际生产中普通焊接刮板弯曲断裂的问题正在考虑中。使用SolidWorks和ANSYS有限元分析软件来构建用于仿真分析的三维模型，并对现有结构进行了改进和优化。比较结果表明：井字型加劲肋有助于提高刮板的整体强度和刚度。优化前，刮板压扣部分的最大等效应力为310 MPa，优化后降至230 MPa，即降低了26％，加劲肋一侧的应力值为170 MPa，抗弯曲性。优化后，刮板的应力分布是均匀的，解决应力集中问题。经过优化，刮板的整体安全系数提高了近15％，从而延长了其使用寿命。与相同条件下优化前的刮板相比，优化后的刮板的完整性接近100％，这证实了刮板优化的有效性。