Track geometric parameter accurate measurement equipment

The utility model relates to the technical field of track detection, and discloses a track geometric parameter accurate measuring device, which comprises two rails, a driving assembly, a mounting assembly, a connecting rod and a measuring assembly, the driving assembly is arranged between the two rails, and the mounting assembly is arranged between the two rails. A mounting assembly is arranged between the two rails and located above the driving assembly. According to the track geometric parameter accurate measurement equipment, a double-shaft driving motor is started, the double-shaft driving motor drives a rotating shaft to rotate, so that a driving wheel rotates, the whole track car is driven to advance, when the track gauge becomes small, a telescopic rod shrinks, a spring also shrinks, and an adjusting box moves towards the side away from the track under the tension of the spring; when the track gauge is increased, the springs extend similarly, the walking wheels move towards the side close to the track