The invention relates to a fish-bellied swing arm structure of a forest crawler fire-fighting vehicle, the fish-bellied swing arm structure of the forest crawler fire-fighting vehicle comprises a fish-bellied swing arm, a swing shaft tube assembly, a frame, a thrust wheel assembly, a suspension spring assembly and a ball head, one end of the swing shaft tube assembly is fixed on the inner side of the frame through a shaft sleeve seat and a positioning pin; the other end of the fish-bellied swing arm is fixed on an upper shaft hole of the fish-bellied swing arm, the thrust wheel assembly is fixed on a lower shaft hole of the fish-bellied swing arm, and the suspension spring assembly is fixed on a frame. The whole fish belly type swing arm is of an I-shaped beam structure with the side belly shaped like a fish belly, and the bending resistance and torsion resistance of the suspension swing arm are improved. Reinforcing ribs are arranged in the I-shaped beam, so that the overall tensile strength of the swing arm is improved; the novel fish-bellied swing arm structure replaces a shaft tube sleeve swing arm structure, so that the deformation of the suspension swing arm is obviously reduced when the crawler fire fighting truck is subjected to a large impact load, and the probability that the crawler derails when the crawler fire fighting truck works in a forest region is reduced.
本发明专利涉及一种林区履带消防车辆鱼腹式摆臂结构,所述的林区履带消防车辆鱼腹式摆臂结构包括鱼腹式摆臂、摆动轴管总成、车架、支重轮总成、悬架弹簧总成、球头,所述摆动轴管总成一端通过轴套座和定位销固定在车架内侧,另一端固定在鱼腹式摆臂上轴孔上,所述支重轮总成固定在鱼腹式摆臂下轴孔上,所述悬架弹簧总成固定在车架上。鱼腹式摆臂整体为边腹部形似鱼腹的工字梁结构,提高了悬架摆臂的抗弯、抗扭能力;工字梁内布设加强筋,提高了摆臂整体的抗拉强度;新型的鱼腹式摆臂结构替代轴管套筒摆臂结构,使得履带消防车在受到较大冲击载荷时,悬架摆臂变形量明显减少,降低了林区履带消防车在林区工作时发生履带掉轨的概率。
Fish-bellied swing arm structure of crawler fire-fighting vehicle in forest region
一种林区履带消防车辆鱼腹式摆臂结构
2022-11-29
Patent
Electronic Resource
Chinese
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