Foldable frame assembly for suspending a machine above a ground surface

A foldable frame assembly for suspending a machine above a ground surface, comprising:

• a base frame having a wheel-carrying end and a handgrip end opposite to each other in a longitudinal direction, and an intermediate portion interposed between said wheel-carrying and handgrip ends;
• a prop member disposed to be connected to said intermediate portion so as to lift said base frame from a laid-down position, where said handgrip end is close to the ground surface, to a standing position, where said handgrip end is remote from the ground surface;
• a wheel unit which is rotatably mounted on said wheel-carrying end about a wheel axis transverse to the longitudinal direction, and which is disposed to rest on the ground surface in one of the laid-down and standing positions;
• a tabletop adapted to support the machine thereon, and having front and rear tabletop ends opposite to each other in the longitudinal direction, said front tabletop end being pivotally mounted on said intermediate portion so as to enable said rear tabletop end to turn about a first pivot axis from a working position, where said rear tabletop end is remote from said intermediate portion, to a folded position, where said rear tabletop end is close to said intermediate portion;
• and
• a bracing member having an anchoring end pivotally mounted on said wheel-carrying end about a second pivot axis which is parallel to the first pivot axis, and a slidable end coupled with said rear tabletop end such that when said rear tabletop end is turned from the working position to the folded position, said slidable end is turned about the second pivot axis to be closer to said intermediate portion;
• and
• a rear locking unit disposed to guard against movement of said slidable end relative to said rear tabletop end when said rear tabletop end is in the working position.