Machinery & Energetics

The operation of mobile power tool and aggregates on their basis requires significant psychological and physical loads on operator and affects the level of fatigue of latter and performance indicators of technological operations. The use of MPT on reverse in structure of harvesting unit with hinged technological module provides for presence of zone of enhanced visual control, which is determined by horizontal plane passing through the reference point (operator's eye) and plane of beam location that leaves reference point and passes through the point of intersection of line of sight with reference surface, and dimensions of which may be limited by outlines of unit that fall into this zone. The studies carried out to determine the size of such zones and their representation in form of visibility factor made it possible to establish that domestic energy facilities of constructive-layout scheme close to integral have estimated value of 0.38...0.40, level 0,56...0,66, and best foreign machines of classical configuration have same indicator at level of 0,80...0,94, while similar indicators for self-propelled harvesters are in limit 0.86...0.89. Further studies carried out using prototype control room made it possible to establish that visibility of working organs of harvesting machines, with operation of energy facility on reverse, depends substantially on location of reference point, which necessitates the equipment of energy facility with regular reversing control station located in zone between the rear axle and harvesting machine, or movable reversible control station with possibility of ts installation in area between the rear axle and the harvesting machine.

mobile power tool, sweeper-tractor unit, actuator, control room, visibility, evaluation