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中联重科土方机械分公司生产的ZD320-3型推土机液压系统结构复杂、管路较多,且这些管路安装在车体内部,安装空间狭小。由于推土机工况恶劣,作业时振动很大,造成液压胶管与周围钢件接触摩擦,导致胶管磨损、爆裂、泄漏,影响推土机的正常使用。为此我们对该型推土机液压系统管接头的密封形式、管路布置、钢管与胶管选用及管夹固定等进行了改进。1.泵阀接头的改进(1)改进前结构该型推土机引进的是日本小松公司技术,改进前液压泵管接头采用小松公司KES标准,液压泵通过带有2个螺栓孔的法兰盘与90°管
ZD320-3 bulldozer hydraulic system produced by Zoomlion earthmoving machinery branch has complex structure and many pipes, and these pipes are installed inside the vehicle body, and the installation space is small. Bulldozers due to harsh working conditions, vibration during operation, resulting in contact with the surrounding hydraulic hose friction, resulting in hose wear, burst, leakage, affecting the normal use of bulldozers. To this end, we have improved the type of seal, pipeline layout, selection of steel pipes and hoses and pipe clamps for the bulldozers hydraulic system fittings. 1. Improvement of pump valve joint (1) Structure before improvement This kind of bulldozer introduces the technology of Komatsu of Japan. The front of the improved hydraulic pump pipe joint adopts Komatsu KES standard. The hydraulic pump passes through the flange with 2 bolt holes and 90 ° tube