To increase a maximum loading capacity by reducing shaking of a vehicle body while always grounding mecanum wheels during traveling on an undulated road surface.SOLUTION: A transportation truck 10 equipped with mecanum wheels 3 and enabling loading of an article on a plane of a load-carrying platform comprises: a support mechanism 6 for supporting rotary shafts 31 of the mecanum wheels 3 so as to be vertically movable while maintaining the state of being parallel to the plane of the load-carrying platform; a first spring 7 disposed between a vehicle body 2 and the support mechanism 6 and fixed to only one of the vehicle body 2 and the support mechanism 6; and a second spring 8 connected at one end to the vehicle body 2 and at the other end to the support mechanism 6. A spring constant of the first spring 7 is larger than that of the second spring 8. The spring constant of the second spring 8 is set such that the first spring 7 is held between the vehicle body 2 and the support mechanism 6 to support the vehicle body 2 in a state where no article is loaded on the load-carrying platform on a horizontal and flat road surface.SELECTED DRAWING: Figure 1
【課題】起伏がある路面を走行中にメカナムホイールを常に接地させつつ、車体の揺れを小さくして最大積載量を大きくする。【解決手段】メカナムホイール3を備え、荷台の平面の上に物品を積載できる運搬台車10であって、メカナムホイール3の回転軸31を、荷台の平面に平行な状態を維持しつつ上下方向に移動可能に支持する支持機構6と、車体2と支持機構6との間に配置され、車体2及び支持機構6のいずれか一方のみに固定された第1バネ7と、一端が車体2に接続し他端が支持機構6に接続する第2バネ8と、を備え、第1バネ7のバネ定数は、第2バネ8のバネ定数よりも大きく、第2バネ8のバネ定数は、水平かつ平坦な路面上で荷台に物品を全く積載していない状態で、第1バネ7が車体2と支持機構6との間に挟まれて車体2を支持するように設定されている。【選択図】図1
TRANSPORTATION TRUCK
運搬台車
2024-09-09
Patent
Electronic Resource
Japanese