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L—A、L—B型组合式制动梁主要由梁架、支柱、瓦托、磨耗套、夹扣等组成,其整体刚性较槽钢弓型制动梁有较大的提高,在列车运行中抗冲击能力较强。因此,随着列车的重载提速,已逐渐取代槽钢弓型制动梁成为货车的主型制动梁。但是,近段时间以来,该型制动梁在运用过程中暴露出一些
L-A, L-B-type composite brake beam mainly by the beam, pillars, watts, wearing sets, clips and other components, the overall rigidity of the channel than the bow steel bow beam greatly improved in the train Impact resistance in operation stronger. Therefore, as the heavy-load speeding of trains has gradually replaced the channel bow-type brake beam to become the main type of brake beam of the truck. However, in recent years, this type of brake beam exposed during operation