Telescopic rail assembly

The utility model relates to a telescopic rail assembly, in particular to a rail assembly with the length capable of being adjusted in a telescopic mode, and belongs to the technical field of line body rails. The device comprises a front rail, a rear rail and a plug-in telescopic shaft, the front rail is connected with a plug-in fixing seat through a connecting piece, the rear rail is connected with a plug-in guide seat through a connecting piece, the front end of the plug-in telescopic shaft is fixed in the plug-in fixing seat, and the middle of the plug-in telescopic shaft is connected in the plug-in guide seat in a front-back sliding mode; a double-end adjusting screw is arranged between the front rail and the rear rail, and the front end and the rear end of the double-end adjusting screw are connected with the front rail and the rear rail through threads respectively. The track adjusting device is simple, compact and reasonable in structure, stable and reliable in work, convenientand fast to adjust and ca