| 摘要 |
PROBLEM TO BE SOLVED: To simply hold a trailer in a stopping state so as to prevent the trailer from freely starting moving by the gradient of a ground or addition of an external force when the trailer is separated from a tractor and is singly parked. SOLUTION: The trailer comprises a frame 1 for receiving a conveyed object, a traveling wheel mounted to the frame 1, and a lifting jack 4 mounted to the front part of the frame 1. One end of the lifting jack 4 is provided with a rotatable wheel 45, and the lifting jack 4 is convertible between a standing position where the wheel 45 is grounded and a lying position where the wheel 45 is floated to be held on the frame 1 side. The lifting jack 4 is provided with a stopper mechanism S for manually converting to wheel 45 to a rotation stopping state or a stop releasing state.
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