Sensor mounting device for monitoring effective prestress loss of concrete beam

The invention discloses a sensor mounting device for monitoring effective prestress loss of a concrete beam. The sensor mounting device comprises a movable mounting vehicle, a hinge seat is fixedly connected to the upper side of the movable mounting vehicle, a telescopic arm is hinged to the hinge seat, a supporting shaft is fixedly connected to the upper end of the telescopic arm, the supporting shaft is rotationally connected with a cylindrical shell, and one end of the outer circle of the cylindrical shell is fixedly connected with a rubber ring; at least two windows are arranged in the middle of the outer circle of the cylindrical shell, baffles are fixedly connected to the inner walls of the cylindrical shell on the two sides of each window, inserting grooves are formed in the sides, facing the windows, of the baffles, elastic pieces are jointly inserted into the inserting grooves of the two baffles, sheet-shaped sensors are pasted to the outer sides, corresponding to the windows, of the elastic pieces,