| 摘要 |
A device for transporting long reinforced concrete structures by railway consists of two support units-gates located symmetrically relative to the vertical transverse plane passing through the middle of inter-support distance of reinforced concrete structure, each of the gates includes an upper frame, the lower surface of which in vertical longitudinal plane is made with an inclined working area connected with the horizontal working area, an intermediate frame, the upper surface of which is made with an inclined working area for frictional interaction with the bottom surface of the upper frame, and a lower frame rigidly fastened on the platform and connected to the intermediate frame by a pin. On the upper frame of each gate the inclined working area is cylindrical with variable radius of curvature, namely, on the upper supporting frames of each gate its radius of curvature increases, when moving in the direction from the middle of inter-support distance of the concrete structure toward the outer edges of the platform or train of platforms, and the intermediate frame of each gate is cylindrical for frictional interaction with mating cylindrical surface of the upper support frame, in the case the radii of curvature of the cylindrical surface of each intermediate frame are smaller than the radii of curvature of the cylindrical surface of the upper frame at each point of contact. |
