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在对一台装载机例行巡检时发现轮毂异常发热,降温后跟机检查,发现该机行走时有轻微卡滞,且在无制动时轮毂温度高达84℃。讯问驾驶员得知:一直感觉该机行走无力,但并未在意,误认为本该如此。实际上,若长此下去,必将使制动片表面的减磨合金涂层高温板结、过度磨损,制动片的使用寿命大大降低。该机制动系统由与液压系统共用双联齿轮泵(转向、先导)、双路充液阀、蓄能器、双路制动阀、压力开
During a routine inspection of a loader, the wheel was found to be abnormally hot. After cooling down, the machine was inspected to find that there was a slight sticking during traveling and the hub temperature was as high as 84 ° C without brake. Asked the driver to know: always feel the aircraft walking weakness, but did not care, mistaken for the case. In fact, if the situation goes on for a long time, it is bound to make the wear-resistant alloy coating on the surface of the brake lining to be knotted at high temperature and wear excessively, and the service life of the brake lining is greatly reduced. This machine braking system consists of double gear pump (steering, pilot) shared with hydraulic system, dual charging valve, accumulator, dual brake valve, pressure opening