Tính toán, thiết kế, mô phỏng bền cho bộ công tác máy đào gầu nghịch Komatsu PC200 phục vụ cho sửa chữa, thay thế

The structural integrity and performance of heavy machinery components, particularly those subjected to dynamic loads, are critical for operational safety and efficiency. This study addresses the significant need for reliable methods to repair and replace components of excavators, focusing on the Komatsu PC200 reverse bucket excavator. By performing detailed calculations, design modifications, and durability simulations, this research aims to ensure that replacement parts meet stringent technical requirements. The findings contribute to optimized fabrication processes and improved operational lifespan, emphasizing the importance of thorough engineering analysis in machinery maintenance.

Mechanical engineers, design engineers, maintenance professionals, and researchers in heavy machinery, construction equipment, and finite element analysis.

This academic paper meticulously investigates the calculation, design, and durability simulation of the working set for the Komatsu PC200 reverse bucket excavator to facilitate repair and replacement operations. The methodology involves an initial calculation of key dimensional parameters, followed by the development of a 3D model using Solidworks software for comprehensive simulation. The simulation focused on analyzing the bending moments and displacements across critical components, including the excavator bucket, bucket teeth, bucket arm, and crane, under various operational force conditions (e.g., 35000N for the bucket, 55000N for bucket teeth, 15000N for bucket arm, and 35000N for the crane). The results indicate that while there are minor differences between calculated and simulated values, all designed dimensions remain within safe durability limits, with observed maximum bending moments and displacements for each component (e.g., 61.733MPa and 0.244mm for the bucket, 156.239MPa and 0.065mm for bucket teeth, 138.5MPa and 0.21mm for the bucket arm, and 42.44MPa and 0.214mm for the crane). Crucially, post-replacement stability checks on the Komatsu PC200 machine confirmed the machine's overall stability. This research provides a robust framework for designing and verifying replacement components, ensuring both operational safety and prolonging the service life of heavy machinery. The findings have direct practical implications for manufacturing and engineering applications, particularly in the maintenance and repair of Komatsu PC200 excavators.