TRANSPORT TRUCK CASTER BRAKING STRUCTURE

To make it possible to brake a universal caster without having to take a hand off from a foot or a truck.SOLUTION: A universal caster 30 of a pivot 40 is fitted to a bottom surface 42 of a truck 50 (a), and a wheel 34 is positioned at a reference wheel position 34S with respect to a travel direction...

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Bibliographic Details
Main Author SUGANO HIROYUKI
Format Patent
LanguageEnglish
Japanese
Published 16.01.2020
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Summary:To make it possible to brake a universal caster without having to take a hand off from a foot or a truck.SOLUTION: A universal caster 30 of a pivot 40 is fitted to a bottom surface 42 of a truck 50 (a), and a wheel 34 is positioned at a reference wheel position 34S with respect to a travel direction 52 (b). A locus circle 54, in which a control part 37 on an outer periphery of the wheel 34 turns around the pivot 40, is formed at a height H2 from the bottom surface 42 (a) (b). A control point 47 is set on the locus circle 54 at an angle θ (=about 120°) from the reference wheel position 34S, thereby positioning control means 20 fitted to the bottom surface 42 (b). When the truck 50 is stopped and is caused to retract slightly, the wheel 34 turns around the pivot 40, reaches 34C after 34B and is pressed by the control means 20, and rotation of the wheel 34 is regulated (c) (d), the truck 50 is held in place. When the truck 5 is caused to advance, the wheel 34 is separated from the control means 20, automatically reaches the reference wheel position 34S, and can cause the truck 50 to stably advance straight (a) (b).SELECTED DRAWING: Figure 1 【課題】足や台車から手を離して操作することなく、自在キャスターを制動できる。【解決手段】台車50の底面42に旋回軸40の自在キャスター30を取り付け(a)、進行方向52に対して、車輪34は基準車輪位置34Sにある(b)。車輪34外周の制御部37が旋回軸40廻りに旋回する軌跡円54が底面42から高さH2で形成される(a)(b)。軌跡円54上で、基準車輪位置34Sから角度θ(=120°程度)に制御ポイント47を設定して、底面42に取り付けた制御手段20を位置させる(b)。台車50を停止させ、若干後退させると、車輪34は旋回軸40周りに旋回して、34B続いて34Cに至り制御手段20に押さえられ、車輪34は回転が規制され(c)(d)、台車50はその場に保持される。台車5を前進させれば、制御手段20から車輪34Cが離れ、自動的に基準車輪位置34Sに至り、安定的に台車50を直進できる(a)(b)。【選択図】図1
Bibliography:Application Number: JP20180129408