Mounting mechanism and metro vehicle electric appliance cabinet

The utility model relates to the technical field of vehicle electrical equipment, in particular to a mounting mechanism and a metro vehicle electrical cabinet, which comprise a fixing assembly, a mounting plate, a first L-shaped pressing plate and a second L-shaped pressing plate, and the first L-shaped pressing plate and the second L-shaped pressing plate are respectively connected with the mounting plate in a sliding manner. The side wall of one end of the first L-shaped pressing plate and the side wall of one end of the second L-shaped pressing plate are movably connected with pressing and clamping pieces correspondingly. The clamping assembly comprises a moving plate movably connected with the mounting plate, a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are symmetrically distributed on the two sides of the moving plate, the first clamping plate is connected with the mounting plate through a first connecting rod, and the second clamping plate is