shown in fig1 in which the two ramp sections 102 and 104 extend from each other at approximately at a 180 u00b0 angle the hinges 130 and the ends 122 and 112 of the ramp sections are designed so that the ramp sections will not rotate about hinge 130 beyond about 180 u00b0 the arrangement of the present invention also includes a dolly 140 while the dolly arrangement is visible in fig4 it is more readily seen in the other drawings only one side of the dolly is shown the other side of dolly 140 is coupled to the other side of the second ends of the ramp section and is identical in construction to the side of the dolly shown in the drawings thus both sides of the two ramp sections are supported by the dolly 140 when the dolly 140 is deployed as illustrated each side of the dolly 140 includes a first arm 142 a second arm which may be referred to as a wheel arm 144 and a wheel assembly 146 mounted to the end of the wheel arm 144 substantial mechanical advantage is achieved by providing a wheel arm 144 rather than mounting the wheel assembly 146 directly to the end of first arm 142 the first arm 142 includes a hinge member 148 which is coupled to the hinge assembly 130 so that the entire dolly can be moved from the position shown.