| 摘要 |
A mount is provided for secure mounting on one end of a vehicle and an elongated arm has a first end thereof provided with support structure for supporting a vehicle wheel therefrom with the medial plan of the wheel generally paralleling the arm. Mounting structure is also provided for mounting the second end of the arm from the mount for angular displacement relative thereto about a first horizontal axis generally normal to the aforementioned plane between a raised upright position with the first end of the arm uppermost and a generally horizontal position with the arm first end swung downwardly to a horizontal position. The mounting structure also mounts the second arm end for swinging relative to the mount about an upright axis, whereby the wheel supporting arm may first be swung across the associated vehicle end from an upright position to a horizontal position and then may be swung outwardly from the corresponding vehicle end.
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