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Roller board has main body, wheels, steering knuckles joined by tie rod, axle journals, spring, and thrust-piece
Roller board has main body, wheels, steering knuckles joined by tie rod, axle journals, spring, and thrust-piece
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机译：压板具有主体，车轮，通过拉杆连接的转向节，轴颈，弹簧和止推件
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摘要
The roller-board has a main body (1), at least three wheels (6,7) and two steering knuckles (2,3) each swivel-mounted on a first end (2a,3a) of the main body. The second, opposite-facing ends (2b,3b) of the steering knuckles are joined by a tie-rod (8). Each steering knuckle has an axle journal (4,5) to each of which a wheel (6,7) is fixed. At least one spring element (9) is positioned on the main body and has at least one free end (9b,9c) running across the tie rod, and engaging with at least one thrust piece (8a,8b) on the tie-rod.
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