推土机大多在地形复杂、气候条件恶劣的环境下作业,野外场地停放。为使推土机适应上述作业环境,要求其发动机的冷却水能在短时间内放净,以防止散热器和水箱冻裂。上海-120A 推土机机油散热器水平安装,放水阀口径较小,冷却水的排放时间较长,且不易排净。我单位在某工地施工时,接连两天冻坏了两个该机的机油散热器。为此,我们建议对该机机油散热器作如下改进。 Most of the bulldozers are operated in an environment with complex terrain and poor weather conditions, and are parked in the field. In order to adapt the bulldozer to the above working environment, it is required that the engine’s cooling water can be drained in a short time to prevent the radiator and the water tank from freezing. The Shanghai-120A bulldozer oil radiator is installed horizontally. The diameter of the discharge valve is small, and the cooling water discharge time is long, and it is not easy to drain. When my unit was constructing at a construction site, two of the aircraft’s oil radiators were frozen and damaged in two consecutive days. For this reason, we recommend the following improvements to the machine oil radiator.