Abstract: A railcar bogie includes: a protection target member of the railcar bogie; and a protective film including an adhesive surface stuck to the protection target member. The protective film is configured such that an impact absorbing layer and a flame-retardant layer are laminated in this order from the protection target member side. The impact absorbing layer is thicker than the flame-retardant layer.

Abstract: A plate spring unit applied to a railcar bogie includes: a lower plate spring including both longitudinal direction end portions supported by the respective axle boxes from below, the lower plate spring being made of fiber-reinforced resin; an upper plate spring arranged above the lower plate spring with a gap and including a middle portion pressed from above by a pressing member provided at the cross beam, the upper plate spring being made of fiber-reinforced resin; a middle spacer sandwiched between a middle portion of the lower plate spring and the middle portion of the upper plate spring; and an end spacer sandwiched between the end portion of the lower plate spring and an end portion of the upper plate spring and allowing relative displacement between the end portion of the lower plate spring and the end portion of the upper plate spring in a longitudinal direction.

Abstract: A method of producing an electrode-equipped plate spring of a railcar bogie includes: a resin removing step of partially irradiating a surface of fiber-reinforced resin, prepared by including electrically conductive fibers in resin, of a plate spring with a laser beam to partially remove the resin and partially expose the electrically conductive fibers; and an electrode forming step of attaching an electrode to an exposed region formed by partially exposing the electrically conductive fibers of the fiber-reinforced resin.

Abstract: A railcar bogie includes: a protection target member of the railcar bogie; and a protective film including an adhesive surface stuck to the protection target member. The protective film is configured such that an impact absorbing layer and a flame-retardant layer are laminated in this order from the protection target member side. The impact absorbing layer is thicker than the flame-retardant layer.

Abstract: A method of producing an electrode-equipped plate spring of a railcar bogie includes: a resin removing step of partially irradiating a surface of fiber-reinforced resin, prepared by including electrically conductive fibers in resin, of a plate spring with a laser beam to partially remove the resin and partially expose the electrically conductive fibers; and an electrode forming step of attaching an electrode to an exposed region formed by partially exposing the electrically conductive fibers of the fiber-reinforced resin.

Abstract: A plate spring unit applied to a railcar bogie includes: a lower plate spring including both longitudinal direction end portions supported by the respective axle boxes from below, the lower plate spring being made of fiber-reinforced resin; an upper plate spring arranged above the lower plate spring with a gap and including a middle portion pressed from above by a pressing member provided at the cross beam, the upper plate spring being made of fiber-reinforced resin; a middle spacer sandwiched between a middle portion of the lower plate spring and the middle portion of the upper plate spring; and an end spacer sandwiched between the end portion of the lower plate spring and an end portion of the upper plate spring and allowing relative displacement between the end portion of the lower plate spring and the end portion of the upper plate spring in a longitudinal direction.

Abstract: A method for reinforcing a railcar bodyshell according to the present invention includes the steps of: in a bodyshell including a metal frame and a metal plate joined to the frame and formed such that a cross section orthogonal to a railcar longitudinal direction has a wave shape, disposing a fiber sheet on at least a part of the plate; and forming a fiber reinforced resin member by bonding the fiber sheet to the part of the plate by an impregnated adhesive resin.

Abstract: To adequately maintain recyclability of a railcar bodyshell while improving the appearance, manufacturing accuracy, and producibility of the railcar bodyshell. A railcar bodyshell includes: a metal side outside plate 2 having openings 2b to 2d; a plurality of metal horizontal frame members 3 joined to an inner surface of the side outside plate 2 and extending in a railcar front-rear direction; a plurality of metal vertical frame members 4 joined to the inner surface of the side outside plate 2 and extending in a railcar upper-lower direction; and carbon fiber reinforced resin members 5A to 5D each joined to a predetermined portion on the inner surface of the side outside plate 2, the predetermined portion including a corner portion of each of peripheral portions 2f to 2h respectively defining openings 2b to 2d or a part of a portion between the vertical frame members 4.

Abstract: A method for reinforcing a railcar bodyshell according to the present invention includes the steps of: in a bodyshell including a metal frame and a metal plate joined to the frame and formed such that a cross section orthogonal to a railcar longitudinal direction has a wave shape, disposing a fiber sheet on at least a part of the plate; and forming a fiber reinforced resin member by bonding the fiber sheet to the part of the plate by an impregnated adhesive resin.

Abstract: To adequately maintain recyclability of a railcar bodyshell while improving the appearance, manufacturing accuracy, and producibility of the railcar bodyshell. A railcar bodyshell includes: a metal side outside plate 2 having openings 2b to 2d; a plurality of metal horizontal frame members 3 joined to an inner surface of the side outside plate 2 and extending in a railcar front-rear direction; a plurality of metal vertical frame members 4 joined to the inner surface of the side outside plate 2 and extending in a railcar upper-lower direction; and carbon fiber reinforced resin members 5A to 5D each joined to a predetermined portion on the inner surface of the side outside plate 2, the predetermined portion including a corner portion of each of peripheral portions 2f to 2h respectively defining openings 2b to 2d or a part of a portion between the vertical frame members 4.