卡车牵引车半挂车交换耦合尺寸

[中文适用范围]： 本 SAE 信息报告中的信息是汽车制造商协会@美国卡车运输协会@和卡车拖车制造商协会@的研究结果，旨在实现设备的互换性，这将符合大多数州的法律尺寸限制，但允许增加这些尺寸内的装载空间。这绝不取代 SAE 手册中有关此主题的其他信息。某些情况下，在应用时需要更加小心，允许在拖车支撑干扰点处留有防溅罩间隙，并定位第五轮以允许拖车在 11% 的坡度上摆动间隙。所有尺寸均以英寸为单位。注意：除非另有说明，第五轮高度 = 48（10.00 x 20 轮胎）标准。适用于无内胎轮胎和低断面轮胎；请参阅轮胎和轮辋协会标准 [外文原描述]： The information in this SAE Information Report is the result of studies by the Automobile Manufacturers Association, American Trucking Association, and Truck Trailer Manufacturers Association, to achieve interchangeability of equipment which will comply with the legal dimensional limitations for the majority of states and yet permit increased loading space within these dimensions. This in no way supersedes other information in the SAE Handbook on this subject.Some cases will require more care in application allowing splash shield clearance at trailer support interference points and positioning fifth wheel to allow trailer swing clearance on an 11% grade. All dimensions are given in inches.Table 1 and Figures 1 and 2 show basic requirements for interchangeability of truck tractor and semitrailer equipment. Figure 3 shows the interchangeability of the doubles converter dolly.The formulas for determining LWC, OAL and CFW are:where:FW= fifth wheel advanceR= Rear axle tire radiusLWC= 90 in= 64 in (short trailers specifically intended for use with two axle tractors)W= 96 in= 102 inC= Clearance, 4 inwhere:H= Distance from intersection at back of cab and trailer swing radius to top of fifth wheel with zero trailer clearance to first obstructionFWP= Top face of fifth wheel to centerline of pivot, 3.50 inSR= Swing radius of trailer cornerCross Reference: J702_201301,J849