The utility model provides a normal displacement and rotation requirement that dynamometry benzvalene form rubber support can satisfy the roof beam body to real-time measurement vertical load. Including last anchorage board subassembly, lower anchorage board subassembly and setting up in between the two piston, end basin, piston fixed mounting is on last anchorage board subassembly, and end basin is installed under on the anchorage board subassembly. Still be provided with vertical dynamometry elastomer between said piston and the end basin, vertical dynamometry elastomer be provided with the high accuracy sputtered film formula sensor that receives the piston action on the surface.