Table top limiting structure of pavement strength detector

The utility model discloses a table top limit structure of a pavement strength detector, which comprises a detector arranged on the side surface of an operation instrument, the detector consists of an upper seat, a base, a pressing rod and a plurality of guide posts, the base is arranged at the bottom of the upper seat, and the pressing rod penetrates through the interior of the upper seat; by means of the designed limiting mechanism, the phenomenon that in the using process of an original road surface strength detector, when a road surface material is detected, due to the fact that the periphery of the upper table top is not provided with a limiting structure, the upper table top is unstable in the up-down moving process is avoided, the upper table top is connected with a plurality of guide columns through the arranged limiting mechanism, and therefore the stability of the road surface strength detector is improved. Under the condition that normal use is ensured, in the operation process of the road surface