TRANSPORT TRUCK CASTER BRAKING STRUCTURE

• Main Author: SUGANO HIROYUKI
• Format: Patent
• Language: English; Japanese
• Published: 16.01.2020
• Subjects: AXLES FOR WHEELS OR CASTORS; CASTORS; HAND-PROPELLED VEHICLES, e.g. HAND CARTS, PERAMBULATORS; INCREASING WHEEL ADHESION; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; PERFORMING OPERATIONS; SLEDGES; TRANSPORTING; VEHICLE WHEELS; VEHICLES IN GENERAL

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