Engine cooling system and cooling water pipeline switching structure thereof

The utility model discloses an engine cooling system and a cooling water pipeline switching structure thereof, the cooling water pipeline switching structure comprises a water outlet pipeline and two water inlet pipelines arranged in parallel, and a switching assembly is arranged between the water outlet pipeline and the two water inlet pipelines. The switching assembly is used for switching one water inlet pipeline connected with the water outlet pipeline to the other water inlet pipeline. Wherein one water inlet pipeline is connected with the normal cooling water pipeline, the other water inlet pipeline serves as a standby pipeline and is connected with the water inlet pipeline in parallel, the switching assembly can achieve automatic switching of the normal cooling water pipeline and the standby cooling water pipeline, and the reliability of long-time work of the engine in the unmanned state is guaranteed. 本实用新型公开了一种发动机冷却系统及其冷却水管路切换结构，冷却水管路切换结构包括出水管路和两个并联设置的进水管路，出水管路与两个进水管路之间设置有切换组件，切换组件用于将与出水管路连接的一进水管路切换至