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一台ZL50型装载机在工作过程中变速器油温超高,驱动力下降。操作手为了能按时完成任务,仍然连续大负荷作业,导致行驶速度越来越慢,最终由于无法行走,只得用一台轮式推土机拖回。经检查发现,变速器内的液压油呈银灰色,且油底壳内有大量的铝末,表明变矩器已损坏。拆检变矩器和变速器后发现,变矩器的涡轮、导轮、泵轮、中心轴承和内轴承都彻底损坏;变速器的Ⅰ、Ⅱ挡离合器片严重烧蚀、翘曲;变速泵磨损严重;各齿轮工作面也有不同程度的磨损。
A ZL50 loader during transmission oil temperature is high, the driving force down. Operators in order to complete the task on time, still heavy workload continuous operation, resulting in slower and slower, eventually unable to walk, had to use a wheel bulldozer towed back. The inspection found that the transmission hydraulic oil is silver gray, and the large amount of aluminum inside the oil pan, indicating that the torque converter has been damaged. Disassemble the torque converter and transmission and found that the torque converter turbine, the guide wheel, the pump wheel, the center bearing and the bearing are completely damaged; Transmission Ⅰ, Ⅱ block clutch disc serious ablation, warpage; variable speed pump wear serious The gear faces also have different degrees of wear and tear.