Automatic testing and early-warning device for track plate displacement

The invention discloses an automatic testing and early-warning device for track plate displacement. A formwork is arranged between a track plate and a concrete base. The track plate is provided with a grouting hole and an observation hole. A magnetic gauge stand is fixed to the side face of the formwork, a universal support arm is arranged on the magnetic gauge stand, a displacement detection device is fixed to the end of the universal support arm, a probe of the displacement detection device makes perpendicular contact with the top face and/or the side face of the track plate, and the displacement detection device is connected with a tester host through a connecting wire. The tester host is provided with a recording device, a display device and a printing device, and further provided with an early-warning sound or lamplight prompt device. The automatic testing and early-warning device can automatically detect the floating amount or sinking amount of the track plate during filled layer grouting, is convenient to use, easy to operate and easy and convenient to install, data are accurate and objective, the detection result can be automatically displayed, early-warned, printed and stored, the labor intensity of plate type ballastless track filling layer pouring construction staff is lowered, and efficiency is improved.