Homocentric-square-shaped track for garage door

The utility model discloses a track shaped like a Chinese character'hui 'for a garage door, which comprises a first U-shaped track, the surface of the first U-shaped track is fixedly connected with a second U-shaped track, the surface of the second U-shaped track is fixedly connected with a first noise reduction layer, and the surface of the first noise reduction layer is fixedly connected with a second noise reduction layer. The inner wall of the first U-shaped rail is fixedly connected with a third noise reduction layer, and the left side of the second U-shaped rail is fixedly connected with a mounting plate. According to the device, the two U-shaped rails made of different materials are welded, so that it is guaranteed that the device has high hardness, the device is prevented from being deformed when the rolling wheels slide in the first U-shaped rail, the second U-shaped rail can be further prevented from being deformed through the arrangement of the reinforcing columns, and the service life of the devic