Easily-mounted torsion beam reinforcing plate assembly and mounting method thereof

The invention relates to an easy-to-install torsion beam reinforcing plate assembly which comprises a cross beam and a sleeve, longitudinal beam upper welding plates are fixedly installed at the two ends of the V-shaped cross beam respectively, the longitudinal beam upper welding plates and longitudinal beam lower welding plates are installed in a welded mode, the sleeve is installed in the cross beam in parallel, the two ends of the sleeve are fixedly connected with the longitudinal beam upper welding plates respectively, and the longitudinal beam upper welding plates are fixedly connected with the sleeve. Lining reinforcing plates are detachably installed at the two ends of the sleeve respectively, the outer sides of the lining reinforcing plates make contact with the inner wall of the cross beam, and a monitoring mechanism for monitoring the state of the cross beam is installed on the sleeve. The lining reinforcing plate, the cross beam and the sleeve are conveniently and rapidly assembled, after assembly,