| 摘要 |
A goal assembly includes a base frame and a main frame. The base frame includes a first side rail, a second side rail and a cross-member that is engaged to the first and second side rails. The main frame includes a first side leg engaged to the first side rail, a second side leg engaged to the second side rail, and a cross-bar engaged to the first and second side legs. A first wheel assembly is engaged to the first side rail. The first wheel assembly includes a wheel that rotates about a rotation axis of the first wheel assembly. A second wheel assembly is engaged to the first side rail. The second wheel assembly includes a wheel that rotates about a rotation axis of the second wheel assembly. The rotation axes of the first and second wheel assemblies are generally parallel to the first side rail.
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