Rail patrol car for community security

The invention belongs to the field of rail traffic equipment, and particularly relates to a community security rail patrol car which comprises a surrounding rail, a guide base and a driving part, a seat is installed on the guide base, a back plate is fixedly connected to the guide base and located behind the seat, two top plates are fixed to the back plate, and the two top plates are fixed to the surrounding rail. A sunshade mechanism is arranged between the two top plates; the sunshade mechanism comprises a liquid storage tank arranged between the two top plates, a heat expansion and cold contraction medium is contained in the liquid storage tank, guide grooves are formed in the side walls, close to each other, of the two top plates, sliding blocks are arranged in the guide grooves in a sliding fit mode, and a roller shaft is rotationally connected between the two sliding blocks. When patrol work is carried out at noon, the sunshade cloth can be automatically unfolded, the sunshade effect is achieved, direct