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1辆XTF120型同步碎石封层车在某高速公路工地施工,连续作业一段时间后驻车等待第二次作业时,发现料门开口渐渐发生变化。检查发现,在没有操纵多路阀手柄的情况下,料门缸活塞杆出现匀速缓慢伸出现象。该封层车液压系统为远程调压变量液压系统,由料门缸1、双向液压锁2、单向调速阀3、多路阀4、单向阀5、散热器6、回油过滤器7、液压油箱8、发动机9、液压泵10、吸油过滤器11、压力表
A XTF120 synchronous gravel sealing car was constructed on a highway site. After waiting for the second operation after a continuous operation for some time, it was found that the opening of the material door gradually changed. Inspection found that in the absence of manipulation of multi-channel valve handle case, the door cylinder piston rod slow uniform phenomenon appears uniform. The sealing car hydraulic system for remote pressure variable hydraulic system, the door cylinder 1, two-way hydraulic lock 2, one-way speed control valve 3, multi-way valve 4, check valve 5, radiator 6, return filter 7, hydraulic tank 8, the engine 9, hydraulic pump 10, suction filter 11, pressure gauge