Anti-loosening track bolt

The invention discloses an anti-loosening track bolt, and relates to the technical field of TBM engineering. The anti-loosening track bolt comprises a bolt body and a nut which are matched with each other, the nut is of a cavity structure with one end closed and the other end open, internal threads are arranged on the surface of the inner wall of the nut, external threads are arranged on the rod part of the bolt body, the internal threads are matched with the external threads, an integrally-formed inserting rod is further arranged in the middle of the inner surface of the closed end of the nut in the axial direction, a groove is further formed in the end part of the rod part in the axial direction, a limiting mechanism is arranged between the inserting rod and the groove, and when the nut is screwed on the rod part, rotation of the nut is limited through the limiting mechanism. The anti-loosening track bolt can effectively overcome the defect that the track bolt is loosened due to vibration of wheels of a sto