Road deflection value measuring wheel and deflection value measuring device

The invention relates to a road deflection value measuring wheel and a deflection value measuring device. The deflection value measuring device comprises a vehicle frame provided with a power system;a road deflection value measuring wheel is connected onto the vehicle frame, and comprises a wheel axle and a rotating wheel, wherein the axial line of the wheel axle extends in the left and right direction, and the rotating wheel is arranged in a way of sharing the same axial line with the wheel axle; the rotating wheel is provided with a wheel surface used for rolling contact with a pavement; afirst displacement sensor used for measuring the space between the wheel axle and the undeformed pavement is arranged on the wheel axle, and a second displacement sensor is also arranged on the wheelaxle and is used for measuring the space between the inner side surface of the wheel surface in contact with the deformed pavement and the wheel axle. The invention provides a deflection value measuring device capable of realiz