What Aspects Should Be Inspected When Purchasing A Second-hand Rotary Drilling Rig

When choosing a second-hand rotary drilling rig, it is necessary to take into account both performance and cost-effectiveness. A comprehensive inspection is the key to avoiding pitfalls. The following introduces six essential items to check starting from core components and key systems.

1. Inspect the power system: Focus on checking if there are any abnormal noises or black smoke when the engine is running, and if it starts smoothly. Confirm the maintenance records through the inspection report to avoid potential core power hazards.

2. Evaluate the hydraulic system: Observe whether the color of the hydraulic oil is clear and bright, and check for any leakage marks. Test the response speed of each action. Jamming or delay may indicate component wear.

3. Inspect the drill pipe and drill tools: Check whether the connection points of the drill pipe are deformed and whether the welds are cracked. The degree of wear of the drill teeth should match the service life of the equipment. Excessive wear will increase the replacement cost.

4. Verify the condition of structural components: Check for any welding repair marks on the vehicle body structure, and whether there are cracks or deformations in load-bearing parts such as the frame and turntable that may affect operational stability.

5. Test the rotary and traveling mechanisms: When rotating the rotary platform, it should be smooth without any jamming. The tightness of the traveling tracks should be appropriate, and the uniformity of wear on the track plates can reflect the usage intensity of the equipment.

6. Verify procedures and records: Confirm that the property rights certificate and annual inspection records of the equipment are complete, and compare the machine number with the file to avoid purchasing mortgaged or modified equipment that exceeds standards.

In conclusion, when purchasing a second-hand rotary drilling rig, a comprehensive inspection should be carried out from core systems such as power and hydraulics to structural components and procedures. A comprehensive assessment should be made based on the service life of the equipment and the actual working conditions. If necessary, professional technicians should be invited for inspection to select reliable equipment with high cost performance.