FIELD: mechanical engineering. SUBSTANCE: invention can be used in wheeled structures designed for carrying loads of different mass. Proposed device contains frame connected with axles carrying freely turning wheels. Axles are fastened on ends of flexible arcs secured fitted on frame. Lower parts of flexible arcs are located lower than axles of wheels. EFFECT: improved efficiency of transportation of loads along support surfaces owing to decrease of energy required for application of external force by use of gravity force. 6 cl, 3 dwg
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