An adaptive sand supply system for a block-modular locomotive has been created. It repeats almost all-wheel movements by attaching a rubber tip and a pipe using a bracket to the bogie axle fender for precise, dosed sand delivery. Free travel of the wheelset relative to the axle box is 2 mm, which will allow the tip, attached to the axle box, to move with a smaller amplitude than when mounted on the bogie frame, and compensate for this movement by the cutting angle of the line-air stream. At the same time, the bunker with sand is suspended from the supporting structures (trolley frame) using special elastic or flexible elements (coil springs, springs, rubber elements), and a rubber corrugated element is used as a connection between the nozzle and the bunker, which makes it possible to compensate for the movement of the bunker. The use of the proposed sand system will provide high traction and braking qualities of the locomotive.
The development relates to railway transport and can be used on locomotives equipped with devices for feeding sand under their wheels to increase the coefficient of adhesion of wheels to rails.
Enterprises of the mechanical engineering industry and design organizations engaged in research and development work on the creation of the carriage of locomotives in the design of promising diesel locomotives, electric locomotives and diesel trains for domestic and foreign railways.
TECHNICAL AND ECONOMIC EFFECTS:
The predicted calculation of economic efficiency in the production of the proposed system is 35 thousand UAH per section of the locomotive. The use of the proposed system allows reducing the wear of wheels and rails by 20-25%, and the consumption of sand by 2.5-3 times, which for a fleet of 45 locomotives will amount to approximately 94 thousand UAH.
Working documentation has been created.
1 patent of Ukraine.
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