Abstract: Disclosed is a carriage body for a multiple unit train, comprising: a chassis (10) and a power system module mounted in a suspended manner below the chassis (10), an access opening (11) for facilitating to overhaul the power system module is provided on the chassis (10), a passenger compartment floorboard (12) covers top surface of the chassis (10) and surround the access opening (11), further comprising an access door (2) for blocking the access opening (11), which comprises a top panel (21), a reinforcement panel (22), and a sound-insulation panel (23) for sound-proofing, which are provided successively from top to bottom, and are fixedly connected as one piece; the periphery of the top panel (21) engages with the passenger compartment floorboard (12); the top panel (21) is detachably yet fixedly connected onto the floorboard (12) of the passenger compartment and/or the chassis (10).

Abstract: Disclosed is a carriage body for a multiple unit train, comprising: a chassis (10) and a power system module mounted in a suspended manner below the chassis (10), an access opening (11) for facilitating to overhaul the power system module is provided on the chassis (10), a passenger compartment floorboard (12) covers top surface of the chassis (10) and surround the access opening (11), further comprising an access door (2) for blocking the access opening (11), which comprises a top panel (21), a reinforcement panel (22), and a sound-insulation panel (23) for sound-proofing, which are provided successively from top to bottom, and are fixedly connected as one piece; the periphery of the top panel (21) engages with the passenger compartment floorboard (12); the top panel (21) is detachably yet fixedly connected onto the floorboard (12) of the passenger compartment and/or the chassis (10).