A, torque
Fault phenomenon: when the rotating drill in drilling construction power head torque, power head forward and reverse rotation speed is not enough, have sound power of horses and reducer running.
Failure analysis:
Second, the hydraulic system of hydraulic oil pressure;
Three, dynamic leader made up to failure, the failure of reducer or gear box.
The cause of the problem:
1, the pilot pressure is insufficient or relief valve set pressure is too low;
2, power horses for damage or hydraulic oil leakage;
3, power head reducer parts damaged;
4, power head gear box damage of mechanical device.
Troubleshooting methods:
1, the detection of hydraulic system is the main system pressure is normal, no problem shows that the hydraulic system, considering the mechanical damage;
2, in the process of inspection of the hydraulic system, found the power head speed reducer and the motor during operation is small periodic sound. Remove the power horses, check the motor and the output shaft, normal;
3, remove the speed reducer, remove the reducer.
Note: when you remove, should keep the environment clean removal, pay attention to the disassembly sequence, in order to install. Carefully check the reducer internal and found that the gear damage. Remove the deceleration machine spare parts should be paid attention to the order, all bolt washer and parts should be cleaned again, at the same time when installed to maintain internal jie reducer;
4, replace damaged gear, reinstall the reducer and motor, restore the drill head, drill back to normal work. Troubleshooting experience: power head speed reducer of mechanical damage can lead to insufficient power head output torque, and can hear the sound, it is important to note that found the problem in time, avoid damage to expand.
Four, is sound
Fault phenomenon: rotating drill during no-load rotational power head, forward when noise reducer, reversal reducer is normal. Failure analysis: sound power head deceleration machine are generally have: reducer in lack of gear lubrication oil will cause friction gear thousand noise; Reducer gear wear serious lead to sound; The inside of the reducer bearing sound; Or bearing with large particles of the reducer gear mesh noise caused by hard objects.
The cause of the problem:
1, gear oil, oil level is too low;
2, the gear wear serious;
3, the inside of the reducer bearing;
4, speed reducer with large particles hard objects.
Troubleshooting methods: 1, the inspection found reducer gear oil oil level within the normal; Further apart reducer check.
Component fault description and analysis, such as the following examples:
(1) power head center wheel reducer reduction gear planet wheel gear wear turn (gear is badly worn surface)
(2) level of planets round the middle of the ring wear;
(3) planetary wheel wear;
(4) the reduction gear reducer planetary wheel three gear clearance has upper and lower activities.
According to the above situation to judge fault is due to the right speed reducer planetary gears reduction gear damage caused;
Need to replace the right gear reducer level, left intermediate gear reducer level slowing. Finally replaced and input shaft speed reducer assembly, after the test, the rotating drill back to normal work. Troubleshooting experience: at the time of inspection, to strengthen the inspection speed reducer gear oil is spoiled or lack of, if necessary, shall inform the customer in a timely manner to add, change gear oil, to strengthen the maintenance of rotating drill.
