The appliance 1 includes a base portion F 1 including a bottom plate 2 made of a soft material including a ground surface 21 121 intended to come into contact with the ground and a reinforcing plate 5 fixed on the bottom plate 2 102 reinforcement A rigid main body 6 including a base plate 60 detachably connected to the plate 5 an integral type upper 7 detachably connected to the main body 60 and an upper base 60 disposed on the base plate 60 of the main body 6 106 And at least one intermediate bottom plate 3 made of a soft material.BACKGROUND OF THE INVENTION装具1は、地面と接触するように意図された接地面21121及び底板2102上に固定された補強板5を含む軟質材料製の底板2102を含む基底部F1;F2、補強板5に着脱自在に接続された基礎板60を含む剛性本体6106、本体60に着脱自在に接続された一体型表甲7、及び本体6106の前記基礎板上60に配置された軟質材料製の少なくとも1つの中間底板3、を備える。【選択図】図1
