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What are the gear-shifting problems of hydraulic pile drivers?

Maintenance is really a big thing in everyone's mind. Many careful owners clean the pile driver every day to keep it in a stable condition, but do you know whether his maintenance is suitable? Today, the editor of Havoc Machinery selected A few high failure probability will analyze this kind of situation for everyone. How about different situations?

1, 1st gear, reverse gear is normal, 2nd gear has no driving force--hydraulic pile driver

First check whether the speed control arm of the hydraulic pile driver is in place. If it is not installed in time, please adjust it again. Then check whether the speed control pressure gauge is at the second gear to reduce the pressure. If there is pressure oil discharge in the outer field of the 8-shaped radial bearing of the reducer Come out, if there is water leakage, tighten the anchor bolts for 4 weeks. If the above methods still cannot remove the removable radial bearing, you must disassemble and replace the O-ring and gasket. At this time, if there is no pressure oil overflow, then It is determined that the 2nd gear assembly in the gearbox is not very good. 2nd gear must be engaged. At the same time, check whether the 2nd gear frame seal is damaged, then disassemble the 2nd gear assembly, remove the piston rod, and check the piston and frame seal Check whether the guide pin in the hydraulic cylinder of the 2nd gear falls off. If the guide pin falls off, the pressure oil of the 2nd gear will be discharged here, resulting in a decrease in the pressure of the 2nd gear, which is also difficult to do. Therefore, disassembly and Replace hydraulic seals or repair or replace parts.

2, the first gear, the reverse gear is weak, and the second gear is slow to drive--hydraulic pile driver

First of all, check whether there is any problem with the pressure indicated on the speed control pressure gauge of the hydraulic pile driver. If the pressure exceeds 108kpa, increase the accelerator pedal to check the pneumatic type; if the vibration is obvious, it means that the turbine oil in the gearbox is too dirty or there is residual oil Insufficient. Check whether the gearbox oil level check plug can discharge the turbine oil. If the oil drain port is dirty, clean the gearbox and filter element, and then replace with new oil; if the oil quantity is normal, and the speed control pressure gauge indicates normal, The common fault is undoubtedly that the gearbox auxiliary gearbox gear and hydraulic input are damaged, so the driving force of the torque converter auxiliary gearbox gear cannot be derived, only the driving force of the main gearbox gear can be derived.