The Reasons for The Slow Rotational Speed During The Pile Driving Process of Rotary Drilling RIGS

When a rotary drilling rig is performing pile driving operations, if you suddenly notice that the rotational speed has slowed down, it must be quite worrying. Slow rotational speed not only affects the construction efficiency but may also delay the project schedule. In fact, there are many reasons for the slow speed of rotary drilling RIGS. Now, we will give you a detailed analysis of these six common factors.

1. Power system failure: Insufficient engine power will directly affect the rotational speed of the drilling rig. Check if the fuel filter is clogged and if the fuel injectors are working properly. If there is a fault with the engine itself, the power output will be insufficient and the engine speed will naturally not be able to increase.

2. Hydraulic system issues: Insufficient hydraulic oil, wear of the hydraulic pump or leakage in the hydraulic pipeline can all lead to a drop in the pressure of the hydraulic system. The pressure is insufficient to provide enough power for the drilling rig, and thus the rotational speed slows down.

3. Excessive load on the drill bit: When encountering hard strata such as rock layers or hard clay, the resistance of the drill bit increases, exceeding the designed load of the drilling rig. The control system will automatically reduce the rotational speed to protect the equipment from damage.

4. Abnormal transmission components: Faults in transmission components such as worn gears in the gearbox and loose transmission shafts can cause slippage and jamming during power transmission, preventing the normal output of rotational speed.

5. Control system failure: Issues with the electronic control system, inaccurate sensor data, or disordered control programs can all lead to abnormal speed regulation, causing the drilling rig's speed to fluctuate or continuously slow down.

6. Improper maintenance: If the lubricating oil is not replaced for a long time or inferior oil is used, it will cause accelerated wear of mechanical components, increase operating resistance, and affect the normal speed of the drilling rig.

The slow speed of the rotary drilling rig in pile driving is the result of the combined effect of multiple factors. When encountering such a situation, do not operate blindly. Instead, gradually investigate from six aspects including power, hydraulics, and drill bit load, identify the root cause of the problem, and solve it in a timely manner. Only in this way can the construction proceed smoothly and the operation efficiency be improved.