Camping vehicle body

A camping vehicle body comprising a first floor, a peripheral side wall fixed around said first floor and laterally confining a passenger compartment over said first floor, a roof covering said peripheral side wall and selectively liftable to a desired elevation above said peripheral side wall, a second floor fixedly secured to said peripheral side wall at a fixed height over said passenger compartment and below said roof, collapsible side walls positioned at the periphery of said second floor and of said roof and laterally confining a livable compartment between said second floor and said roof, said roof being liftable by means including hydraulic cylinders fixedly connected at the opposite ends to said roof and relative to said peripheral side wall respectively and selectively elevating and lowering said roof upon actuation, and an intercoupling system connected to said hydraulic cylinders and controlling concurrent operation thereof, said intercoupling system including a rack adjacent each of said hydraulic cylinders, fixedly secured relative to said roof and displaceable endwise bodily therewith, a gear meshing with each of said racks, shafts carrying said gears and bodily rotatable therewith, and a rotation transmitting assembly interconnecting said shafts and producing concerted rotation of the latter and of said gears and a resulting concerted endwise displacement of said racks.