Device for preventing beam end of prefabricated T beam from cracking after tensioning

The utility model relates to the technical field of bridge construction, and provides a device for preventing the beam end of a prefabricated T beam from cracking after tensioning, which comprises a rubber pad, a telescopic rod and a shell, and is characterized in that the rubber pad is arranged above the telescopic rod, meanwhile, a limiting groove is formed inside the upper part of the shell, a threaded hole is formed in the bottom of the telescopic rod, and the telescopic rod is arranged in the limiting groove. A threaded hole is formed in the shell and located in the limiting groove, meanwhile, a two-way threaded rod is further arranged in the limiting groove, a motor is arranged at the position, located in the shell and opposite to the limiting groove, of one side of the two-way threaded rod, and a transmission shaft of the motor is connected with the two-way threaded rod. And through mutual cooperative use of the telescopic rods and the rubber pads, the device can be not limited by the size of the T-sha