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进行路拌机液压泵维修时的要点
来源：https://www.sddhfjx.com/ 日期：2023-05-12
路拌机液压系统行走与拌和转子的驱动均为全液压闭式回路。行走速度与拌和转子转速均可实现无级变速辅助系统（转向、拌和转子升降、尾门开闭）均为液压操纵。通过压力自动补偿装置（POR系统）实现功率自动分配。在进行路拌机液压泵维修的时候，应该注意什么？下面冷再生机租赁厂家为您分析：
The hydraulic system of the road mixer and the drive of the mixing rotor are both fully hydraulic closed circuits. Both the walking speed and the mixing rotor speed can achieve stepless speed change assistance systems (steering, mixing rotor lifting, tailgate opening and closing), all of which are hydraulically operated. Automatic power distribution is achieved through pressure automatic compensation device (POR system). What should be paid attention to when repairing the hydraulic pump of the road mixer? Below is an analysis of the cold regeneration machine rental manufacturer for you:
（1）检查路拌机液压泵有无伤痕和锈蚀现象，必要时应更换新品。
(1) Check the hydraulic pump of the road mixer for signs of damage and rust, and replace it with a new one if necessary.
（2）检查路拌机液压泵副配合情况。将柱塞端头插人柱塞套内，倾斜约60°，若柱塞能在自身作用下缓慢地下滑为配合良好。
(2) Check the coordination of the hydraulic pump pair of the road mixer. Insert the end of the plunger into the plunger sleeve and tilt it at about 60 °. If the plunger can slowly slide under its own action, it is considered a good fit.
（3）检查路拌机液压泵柱塞副的密封性。用手握住柱塞套，两个手指堵住柱塞顶端和侧面的进油口。用另一只手拉出柱塞，感到有较大的吸力，放松柱塞立即缩回原位，表明柱塞副密封良好，否则应更换柱塞副。
(3) Check the sealing of the hydraulic pump plunger pair of the road mixer. Hold the plunger sleeve with your hand and block the oil inlet at the top and side of the plunger with two fingers. Pull out the plunger with the other hand and feel a strong suction. Release the plunger and immediately retract it back to its original position, indicating that the plunger pair is well sealed. Otherwise, the plunger pair should be replaced.
（4）检查出油阀副减压环带是否磨损有台阶或伤痕现象，必要时应予以更换。
(4) Check if the pressure reducing ring of the oil outlet valve is worn, stepped or scratched, and replace it if necessary.
（5）检查出油阀副的配合情况。用手指堵住出油阀下孔，用另一手指将出油阀轻轻向下压，当手指离开出油阀上端时，它能自动弹回原位，表明出油阀副密封良好，否则应更换出油阀副。
(5) Check the fit of the oil outlet valve pair. Block the lower hole of the outlet valve with your finger, and gently press the outlet valve down with your other finger. When your finger leaves the upper end of the outlet valve, it can automatically rebound back to its original position, indicating that the outlet valve pair is well sealed. Otherwise, the outlet valve pair should be replaced.
（6）检查路拌机液压泵挺柱体。喷油泵体和挺柱体之间的标准间隙为0～0.03mm，如超过0.2mm，则应更换零件。
(6) Check the hydraulic pump tappet body of the road mixer. The standard clearance between the fuel injection pump body and the tappet body is 0-0.03mm. If it exceeds 0.2mm, the parts should be replaced.
（7）检查路拌机液压泵柱塞凸缘和控制套的凹槽之间的间隙，应为0.02～0.08mm，如超过0.12mm，需要更换控制套。
(7) Check the gap between the flange of the hydraulic pump plunger of the road mixer and the groove of the control sleeve, which should be 0.02-0.08mm. If it exceeds 0.12mm, the control sleeve needs to be replaced.
常见的路拌机液压泵维修就如上述所说，若是一些自己无法解决的故障问题，在没有完全把握解决故障的情况下，建议尽量寻找专业的液压泵维修厂家，以免自己动手造成不必要的损失。更多相关事项就来我们网站https://www.sddhfjx.com咨询！
The common maintenance of hydraulic pumps in road mixers is as mentioned above. If there are some fault problems that cannot be solved by oneself, it is recommended to seek professional hydraulic pump maintenance manufacturers as much as possible without fully understanding the problem, to avoid unnecessary losses caused by self intervention. For more related matters, come to our website https://www.sddhfjx.com consulting service
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