| 摘要 |
The invention in question concerns an articulated portable trolley designed to facilitate changing the wheels of trucks, coaches, tractors and similar vehicles. The trolley, which is inserted under the wheel to be changed after it has been raised from the ground, can be adjusted according to the size of the wheel and raised to bring two arms with rollers into contact with the tire, which is supported, in this way, during dismantling. After having unscrewed the bolts, the trolley enables the wheel to be changed to be removed and lowered to the ground without effort. The new wheel to be mounted is then placed on the two lowered arms of the trolley and is, in this way, easily raised to the height of the hub and brought close to it. One of the two rollers may be made to rotate to make the wheel turn slowly to align the holes on the rim with the corresponding connections on the hub. The trolley is adjustable so as to be adaptable to wheels of differing sizes and can be dismantled in such a way as to be contained in a small case. |
