SUPPORT DEVICE AND TESTING DEVICE OF TIRE WHEEL

To provide a support device and a testing device capable of coping with more than two kinds of tire wheels.SOLUTION: A support device 29 includes an inner holding mechanism 53 and a lower holding mechanism 52. The inner holding mechanism 53 includes: a collet 72 having at least three cylindrical parts 72B engaged with a hub hole 4A of a tire wheel 4; an insert shaft 71 inserted into a through hole 72G of the collet 72; and an actuator 70 for relatively moving the collet 72 relative to the insert shaft 71. A lower holding mechanism 52 includes: a support part 66 for supporting the tire wheel 4 from a lower side; a piston 61 that can be elevated while accompanying the support part 66 and allows air to be supplied to a lower surface 61G; an urging member 63 for urging the piston 61 downward; and an advanceable/retractable part 56 relative to the piston 61 while being provided in a position nearly at the same height as a middle position within an elevation range X of the piston 61.SELECTED DRAWING: Figure 2 【課題】２種類よりも多い種類のタイヤ付ホイールに対応できる支持装置および試験装置を提供する。【解決手段】支持装置２９は、内側保持機構５３および下側保持機構５２を含む。内側保持機構５３は、タイヤ付ホイール４のハブ穴４Ａに嵌る３つ以上の円筒部７２Ｂが設けられたコレット７２と、コレット７２の貫通穴７２Ｇに挿通された挿通軸７１と、コレット７２を挿通軸７１に対して相対移動させるアクチュエータ７０とを含む。下側保持機構５２は、タイヤ付ホイール４を下側から支える支持部６６と、支持部６６を伴って昇降可能であって下面６１Ｇにエアが供給されるピストン６１と、ピストン６１を下向きに付勢する付勢部材６３と、ピストン６１の昇降範囲Ｘにおける途中位置と同じ高さ位置に設けられてピストン６１に対して進退可能な進退部５６とを含む。【選択図】図２