FLOOR STRUCTURE OF ROLLING STOCK

PROBLEM TO BE SOLVED: To effectively control vibration transmitted through a floor from a lower part of the floor by arranging an elastic body for damping vibration on a top of a truss, and placing a floor material of a gest room on the elastic body. SOLUTION: A base frame is built up of a hollow extruded structural angle made of light alloy 7 with a rib 7b connecting two face plates to each other and arranged in a truss shape. A floor material 8 is placed through an elastic body 9 on an upper surface of the angle 7. The body 9 is disposed on an upper part at the top of a truss, and on both sides of the top of the truss stoppers 10, 10 are integrally provided with the angle 7. A plurality of the elastic bodies 9 made of rectangular vibration proof rubber are arranged when viewed from the longitudinal direction of a body of rolling stock. Between the bodies 9, 9 a sound shielding member 13 is disposed. With the constitution, solid transmission of vibration to a floor material 8 from an under-floor part through the angle 7 passes through the top of the truss from the rib 7b, but since the elastic body 9 is provided at the crossing point, it can be attenuated effectively, resulting in reduction of vibration and noise.