| 摘要 |
PROBLEM TO BE SOLVED: To provide a snowplow structure which allows moving up and down of wings in parallel with the frontage of the structure, which wings block the flow of snow regardless of the inclined position of a snowplow body, when snow is removed by forcing the snow to flow into the shoulder of a road. SOLUTION: The snowplow is so controlled and pivoted on a support point O at the center of a support frame 1, which is connected to a three-point supporting device of a snow removal vehicle, as to be rocked freely to the left/right against the support frame via hydraulic cylinders 2. On both sides of the snowplow, side frames 7 are pivoted rockably on rotation points P. Links 11 are connected to rear connection points Q on the rear ends of the side frames, and to support connection points R on the support frame 1. The points O, P, Q, R combine to form a parallel link mechanism, where the side frames 7 are connected to the support frame 1 while being kept in a constant position regardless of the inclined position of a snowplow body 4, and wings 14 are pivoted on the side frames 7 to be rockable vertically. COPYRIGHT: (C)2007,JPO&INPIT
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