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一、铲土阻力计算铲运机在铲土时的运行阻力不是定值,在装土的最后阶段达到最大值。这时因为是最大值,取作计算值。作业所需的牵引力消耗在克服切土阻力P_(Рез)、刀片与土壤的摩擦阻力P_(тр)、斗前土堆的移动阻力P_(пр)、和铲斗装土时出现的阻力P_(зап)。铲土终了时阻力的合力由铲土阻力P_(коп)和铲运机移动阻力R_(пер)所组成: P=P_(коп)+R_(пер)铲运机铲土阻力P_(кеп)=P_(pez)+P_(тр)+P_(пр)+P_(zan)切土阻力P_(pez)=k_(pez)Fc
First, the calculation of the shoveling resistance The operating resistance of the scraper when shoveling the earth is not a fixed value, and reaches the maximum value in the final stage of soil loading. This is because it is the maximum value, which is taken as the calculated value. The traction required for the operation is to overcome the shear resistance P_(Рез), the frictional resistance of the blade with the soil P_(тр), the moving resistance of the bucket mound P_(пр), and the resistance P_ (plotted when loading the bucket). Зап). The combined force at the end of shoveling consists of shovel resistance P_(коп) and scraper movement resistance R_(пер): P=P_(коп)+R_(пер) Scraper shovel resistance P_(кеп)= P_(pez)+P_(тр)+P_(пр)+P_(zan) Cut-off resistance P_(pez)=k_(pez)Fc