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    Insulating structure for interior of railway freight cars
    1.
    发明授权
    Insulating structure for interior of railway freight cars 失效
    铁路货车内部绝缘结构

    公开(公告)号：US3687087A

    公开(公告)日：1972-08-29

    申请号：US3687087D

    申请日：1970-04-13

    Applicant: ACF IND INC

    Inventor： YURKOSKI FRANK R ,  COYLE EDWARD L ,  NEEDHAM ROBERT F ,  ROLLINS DALLAS W

    IPC: B60P7/16 ,  B61D27/00 ,  F17C3/06

    CPC classification number: B61D5/04 ,  Y10S220/902

    Abstract: A resilient insulating structure on the interior surface of a railway freight car body in contact with lading carried by the car and supporting at least a substantial portion of the lading carried by the car. The resilient insulating structure comprises a layer of polyurethane foam material having its outer surface secured to the inner surface of the metallic car body and an elastomeric inner liner secured to the inner surface of the polyurethane foam material. The polyurethane foam material forms an intermediate cushioning layer for the elastomeric inner liner and is of a thickness at least around 1 inch and may be as great as around 8 inches. The elastomeric inner liner is less than around 1/2 inch thickness and has a stiffness less than the stiffness of the foam material. Some of the energy created by forces exerted by the lading against the resilient insulating structure is dissipated by the deformation of the insulating structure with the remainder of the energy being transmitted to the railway car body through the insulating structure. Upon unusually high local stresses being exerted, such as from a tool or a workman within a car, the intermediate foam layer may be deformed permanently while the elastomeric inner liner in contact with the lading remains undamaged.

    Abstract translation: 在铁路货车车体的内表面上与汽车承载的提升装置接触并支撑至少大部分由轿厢承载的提升装置的弹性绝缘结构。 弹性绝缘结构包括聚氨酯泡沫材料层，其外表面固定在金属车体的内表面上，弹性体内衬固定在聚氨酯泡沫材料的内表面上。 聚氨酯泡沫材料形成用于弹性体内衬的中间缓冲层，其厚度至少约为1英寸，并且可以大约为8英寸。 弹性体内衬小于约1/2英寸厚度，并且刚度小于泡沫材料的刚度。 由提升针对弹性绝缘结构施加的力产生的一些能量被绝缘结构的变形消散，剩余的能量通过绝缘结构传递到铁路车身。 当非常高的局部应力被施加，例如来自汽车内的工具或工人时，中间泡沫层可能永久变形，而与提升接触的弹性内衬保持不损坏。

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