The article presents results of research on commercially used cutting mechanisms of low-power (about 10 kW) wood size reduction machines driven by small engines. The energy consumed was determined based on work demand, showing that two-cylinder cutting mechanism consumes less energy than disc cutting mechanism and drum cutting mechanism when wood size reduction various species of wood, within the cross-section range from 10 × 10 mm to 50 × 50 mm. The main application of the tested machines is the reduction of branch volume when maintaining the infrastructure of urban green areas, in order to facilitate their transport. The average increase in energy consumption required for the size reduction of a single 2-m-long timber beam relative to the most energy-efficient mechanism (two-cylinder cutting mechanism) may range from 369% to 478%, while the average energy consumed during 1 h of continuous wood size reduction machines operation may increase relative to the least energy-efficient mechanism from 80% to 188%. The average productivity when reducing the size of the wood of the tested machines depending on the cutting mechanism ranges from 0.47 tons/h to 0.06 tons/h. The greatest productivity is characterized by the two-cylindrical mechanism cutting 0.88 tons/h.

本文介绍了对由小型发动机驱动的低功率（约 10 千瓦）木材粉碎机的商用切割机制的研究结果。消耗的能量是根据工作需求确定的，表明在10 × 10 mm 到50 mm 的横截面范围内，当木材尺寸减小各种木材时，两缸切割机构比圆盘切割机构和滚筒切割机构消耗更少的能量× 50 毫米。测试机器的主要应用是在维护城市绿地基础设施时减少分支量，以方便其运输。与最节能的机构（双缸切割机构）相比，单个 2 米长的木梁尺寸减小所需的能耗平均增加 369% 至 478%，而在连续木材粉碎机运行 1 小时期间消耗的平均能量可能相对于最低能效机制从 80% 增加到 188%。取决于切割机制，在减小被测机器的木材尺寸时的平均生产率为 0.47 吨/小时至 0.06 吨/小时。最大生产力的特点是双圆柱机构切割0.88吨/小时。