Abstract
The purpose of the work consists in the productivity increase of a single-bucket excavator at the expense of bucket shape perfection. The improved and offered bucket design will allow scooping more soil without changing hydraulic drive characteristics. This effect is achieved at the expense of the cylindrical shape of the rear wall of the bucket. There is presented a computation scheme of forces acting upon an improved bucket. The calculations of the advanced excavator bucket based on the YuMZ-6AKL tractor allowed drawing an outline of the supposed design and obtaining moment dependences of resistance on a bucket during digging upon a bucket rotation angle. The dependences of moment resistance on the bucket are formed for buckets with the capacity of 0.25m3, 0.35m3, 0.45m3, 0.55m3 and 0.65m3. The improved bucket design will allow increasing the volume of soil scooped thereby increasing productivity of single-bucket hydraulic excavators. Investigation methods – theoretical researches. The investigation results and novelty: there is offered the improved design of a bucket, a calculation circuit of forces acting upon an improved bucket. Conclusions: the advanced design of a bucket will allow scooping a larger volume of soil without changing hydraulic drive characteristics. In such a way, the productivity increase of single-bucket hydraulic excavators without changing hydraulic drive characteristic is achieved.
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