Yarn breaking prevention device for textile machine

The utility model relates to the field of textile machines, and discloses a yarn breaking prevention device for a textile machine, which comprises a vertical plate, two I-shaped guide wheels are rotatably mounted on the front side of the vertical plate, an I-shaped tensioning wheel positioned above the I-shaped guide wheels is arranged on the front side of the vertical plate, the same yarn is wound on the two I-shaped guide wheels and the I-shaped tensioning wheel, and the two I-shaped guide wheels and the I-shaped tensioning wheel are arranged on the vertical plate. A first height adjusting mechanism used for adjusting the I-shaped tensioning wheel is arranged on the vertical plate, a second height adjusting mechanism used for adjusting the vertical plate is arranged on the rear side of the vertical plate, the first height adjusting mechanism comprises a mounting base and an electric push rod, and a rectangular hole is formed in the front side of the vertical plate. The yarn conveying device has the followin