在铁路货车制造中,中梁制造占有非常重要的地位。通常都以中梁为组装基准,在底架组装胎上完成底架的组装,因此,中梁制造状态对底架组成状态影响极大。如底架落车后,车体摇晃、车辆倾斜超限等问题,就与中梁心盘面扭翘有直接关系。为保证车辆运用状态,铁标中对落车后心盘与检验平 In the manufacture of railway wagons, the manufacturing of the middle beams has a very important position. Usually in the beam as the assembly base, chassis assembly in the chassis to complete the assembly of the chassis, therefore, the manufacturing status of the chassis under the form of a great influence on the chassis. Such as the chassis off the car, body shaking, vehicle tilt overrun and other issues, and the center of the beam distortions have a direct relationship. In order to ensure the status of vehicle operation, the iron standard in the heart after the car and check flat