V-shaped clamp and vehicle tail gas treatment device

The utility model relates to a V-shaped clamp and a vehicle tail gas treatment device. The V-shaped hoop comprises an arc-shaped hoop belt, a T-shaped bolt, and a first connecting piece and a second connecting piece which are arranged at the two ends of an opening of the arc-shaped hoop belt; a first clamping groove with the length direction consistent with the length direction of the arc-shaped strap is formed in the first connecting piece, and a first mounting hole is formed in each of the two sides of the first clamping groove; a sleeve is mounted on the second connecting piece; a cross rod of the T-shaped bolt can enter or exit from the first mounting hole through the first clamping groove, and a vertical rod of the T-shaped bolt penetrates through the sleeve and then is locked through the locking nut. Compared with the prior art, the T-shaped bolt has the advantages that when the T-shaped bolt fails, the T-shaped bolt can be independently detached and replaced, so that the maintenance and replacement cos