Articulating wagon frame
An articulating wagon frame has an open position and a closed position. The frame has eight corner joints, namely four upper corner joints and four lower corner joints. The four upper corner joints include a right front upper joint, a left front upper joint, a right rear upper joint, and a left rear upper joint. The four lower corner joints include a right front lower joint, a left front lower joint, the right rear lower joint, and a left rear lower joint. Four linear joints include a right middle upper joint, a left middle upper joint, a left middle lower joint, and a right middle lower joint. Six vertical supports include a right front vertical support, a left front vertical support, a right middle vertical support, a left middle vertical support, a right rear vertical support, and a left rear vertical support.
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Weigang
Wang