How to quickly diagnose Pneumatic Rib Drill faults

I. First Step: Initial External Inspection

1. Air Source Status Check: Confirm that the compressed air system pressure is within the rated range of 0.4-0.6MPa. Check for bends, leaks, or blockages in the air pipes.

2. Visual Inspection: Observe the drill rig casing for damage, check for loose connecting screws, and verify that the oil level in the oil mist lubricator is within the acceptable range and that oil dripping is normal.

3. No-Load Test Run: Gently pull the trigger to start the drill rig. Listen for a smooth running sound and determine if the rotation speed is significantly lower than normal.

II. Second Step: Precise Module Positioning

1. Air System Diagnosis: If starting difficulties, sudden shutdowns, or black smoke from the exhaust occur, prioritize checking for abnormal pressure, stuck valve cores, and incorrect lubricant type/quantity.

2. Mechanical Transmission Diagnosis: If weak rotation, abnormal metallic noises, or drill bit detachment occur, prioritize checking the wear of the drill bit and drill rod, the meshing status of gears and bearings, and the tightness of threaded connections.

3. Drilling Operation Diagnosis: If stuck drill bit, borehole deviation, or severe machine vibration occurs, prioritize checking the rock cuttings removal, drill rod straightness, and operator stability.

III. Third Step: Quickly Verify and Locate the Root Cause

1. Apply soapy water to all joints and valves; where bubbles appear, the leak point is identified, quickly pinpointing the location of the seal failure.

2. Compare and calibrate the drilling rig's own pressure gauge with a standard pressure gauge to rule out misjudgments due to distorted pressure gauge readings.

3. Replace with a brand new, qualified drill bit and straight drill rod for a test run to quickly eliminate faults caused by defects in the drilling tools themselves.