In response to the threat posed by pine wood nematode disease to pine and other tree species, as well as the problems of transportation difficulties, low efficiency, high transmission risks, and poor crushing results inherent in traditional methods of handling large-diameter infected wood, a large-diameter infected wood crushing system was developed to enable on-site processing. Accordingly, a tracked chassis was designed for this crushing equipment; infected wood is first pretreated using hydraulic splitting technology and then crushed by a disc chipper followed by a hammer mill. Multibody dynamics simulation software was employed to simulate the operating behavior of the tracked chassis in complex terrains, including a 20° slope, a vertical wall measuring 200 mm in height and 400 mm in width, and a ditch measuring 200 mm in depth and 400 mm in width. Key parameters such as translational acceleration, vertical acceleration, and pitch angle were analyzed during operation. Under these conditions, the tracked chassis exhibited strong stability and pass ability, with all key parameters remaining within acceptable ranges and no incidents of track derailment. This large-diameter infected wood crushing equipment enables localized crushing, providing insights and technical support for infected wood management and tracked chassis design.
行驶复杂地形可分为斜坡、垂直壁和壕沟等类型,并通过多体动力学仿真软件进行仿真模拟[25]。经过在浙江永康市林区的实地勘察,路面主要包含20°斜坡、200 mm× 400 mm (高×宽)的垂直壁,以及200 mm × 400 mm (深×宽)的壕沟。模拟履带底盘在典型工况下的作业能力,包括纵向爬坡、攀登垂直壁及跨越壕沟。通过分析底盘的平移加速度、垂向加速度及俯仰角,探讨装备在不同路况下的行驶性能[24-25]。
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