2026-04-14

Routine Maintenance of Crawler Cranes (for Mining)

Inspect the crane’s main boom, auxiliary boom, and tower structure for cracks, deformation, or weld separations; ensure all structural connection bolts are present, securely tightened, and meet specified torque requirements. Verify that the crawler undercarriage, track links, support rollers, idler wheels, and drive sprockets are in good condition, with no severe wear, derailment, or binding, and that track tension is appropriate. Confirm that the hoisting mechanism and wire ropes are intact, free of broken wires, strand breaks, corrosion, or deformation, with adequate lubrication and orderly arrangement. Ensure that the hook, pulleys, anti‑disengagement devices, and limit switches are in proper working order, and that safety locks, limit switches, and torque limiters are responsive and reliable. Check that hydraulic oil, gear oil, engine oil, and coolant levels are normal, and that all hydraulic lines and cylinders are leak‑free. Test the travel, luffing, and lifting control mechanisms for smooth operation, and confirm that brakes and parking brakes function reliably. Verify that the electrical system, lighting, alarm systems, and explosion‑proof devices are intact and free from any potential hazards. Before commencing work, perform a no‑load trial run: verify that lifting, luffing, slewing, and traveling motions are smooth, silent, and vibration‑free. During operations, closely monitor torque, angle, and load parameters, strictly prohibiting overloading, oblique pulling, or crooked lifting. Ensure wire ropes run smoothly without rope biting, crushing, or tangling, and that pulleys rotate freely. Confirm that all mechanisms brake reliably, with smooth starts and stops, and no slippage of hooks, booms, or vehicles. Maintain normal hydraulic oil temperature and pressure, as well as engine operating parameters, avoiding overheating or overpressure. If any abnormal structural noises, wire rope irregularities, limit switch malfunctions, or hydraulic leaks are detected, immediately stop the machine and cease operations. Clean dust, debris, and oil residues from the machine body, tracks, booms, and hoisting mechanism. Grease all articulated pins, slew bearings, pulley bearings, travel wheel assemblies, and hoisting bearings throughout the equipment. Apply specialized wire rope grease evenly to the wire ropes and neatly arrange them. Inspect and tighten all structural connection bolts, undercarriage bolts, and pipeline clamps. Evaluate the performance of limit devices, torque protection systems, and braking systems to ensure all safety components remain in good working order. Retract the booms and return the hook to its original position, slacken the wire ropes appropriately, park the equipment on a level, stable surface, disconnect the power supply, lock the vehicle, and implement thorough dust‑ and rust‑proofing measures.

2026-04-14

Daily Maintenance of Mining Trucks (Mining Dump Trucks)

Inspect the frame, cargo box, and lifting mechanism for cracks, deformation, or weld failures; ensure the cargo box guard is securely fastened. Verify that all tires have proper pressure, with no cuts, bulges, or uneven wear, and that wheel rims and hub bolts are tightly secured without looseness. Check that engine oil, coolant, fuel, transmission fluid, rear axle gear oil, and brake fluid levels are within specifications, with no shortages or degradation. Confirm that the braking system and parking brake operate smoothly and reliably, with no air or fluid leaks in the brake lines. Ensure the steering system is responsive, free of heaviness, wandering, or binding. Inspect the lifting cylinders and hydraulic lines for leaks, and verify that lifting operations function normally. Verify that lights, tail lamps, warning lights, the horn, the reverse‑beep alarm, the dashcam, and explosion‑proof electrical equipment are in good working order. Ensure fire extinguishers and safety warning signs are present and valid. While driving, monitor engine RPM, coolant temperature, oil pressure, and vehicle speed to ensure stability, with no unusual noises or vibrations. Braking, deceleration, and stopping should be smooth, with no brake pull, drag, or overheating. Steering must be precise, without wobble or deviation. Lifting and unloading procedures should proceed smoothly, without jamming, leakage, or abnormal sounds. Overloading, uneven loading, and high‑speed driving are strictly prohibited. Continuously check tire temperature and pressure to prevent the risk of blowouts due to overheating. If you detect oil or air leaks, brake failure, or a loss of power, immediately pull over and shut down the vehicle. Clean the cargo box, body, and undercarriage, removing coal gangue, debris, and accumulated dust to maintain a tidy appearance. Inspect and tighten critical bolts on wheel hubs, leaf springs, the frame, and the driveshaft. Lubricate the driveshaft universal joints, chassis pivot points, and suspension kingpins. Examine all vehicle pipelines and seals, address minor leaks, and mark any aged or damaged components. Check the condition of brake pads and brake drums, and identify potential issues in the braking system. Park the vehicle on a level, stable surface, engage the handbrake, disconnect the power, and lock the vehicle. In winter, take appropriate measures to protect fluids from freezing.

2026-04-14

Daily Maintenance of Mining Excavators (the excavator you mentioned)

Inspect the excavator’s boom, stick, bucket, and dipper arm for cracks, weld failures, or deformation; ensure the bucket teeth and tooth holders are intact, with no looseness or missing parts. Verify that the track tension is appropriate, and that the track shoes, track links, idler wheels, and road wheels are undamaged, free from severe wear, derailment, or binding. Check that the levels of engine oil, coolant, diesel fuel, hydraulic fluid, and swing gear oil are normal and that the fluids are in good condition. Confirm that all hydraulic lines, cylinders, and fittings are leak‑free, and that high‑pressure hoses show no bulging or signs of aging. Inspect the swing bearing bolts to ensure they are properly tightened and adequately lubricated, and verify that there are no unusual noises or excessive play during rotation. Ensure that both travel and parking brakes function reliably, and that control levers and pedals respond smoothly and sensitively. Finally, confirm that the electrical system, explosion‑proof devices, lighting, alarms, and monitoring equipment are all in good working order. During operation, monitor the engine for smooth running, with no abnormal noises, smoke, or vibrations. Verify that the hydraulic system operates smoothly, with no sticking, jerking, or loss of power during lifting, digging, slewing, or traveling. Continuously track water temperature, oil temperature, oil pressure, and system pressure to ensure they remain within normal ranges, and avoid prolonged overloading. Ensure that the slew unit and travel mechanism operate quietly and without overheating. Regularly inspect the tracks for proper operation, eliminating any risk of stones becoming lodged or derailment. If leaks, overheating, sluggish movement, or unusual noises occur, immediately shut down the machine and conduct a thorough inspection. Thoroughly clean coal gangue, soil, and dust adhering to the machine body, tracks, undercarriage, and work equipment. Apply grease to all hinge points on the boom and stick, bucket pins, swing bearings, and wheel assemblies. Check track tension and adjust or clear any debris caught in the tracks as needed. Tighten critical bolts on the machine body, slew unit, and work equipment. Inspect hydraulic hoses and seals for wear or aging, promptly reporting and replacing any components presenting potential hazards. When parking, lower the bucket to rest on the ground, relieve pressure from the hydraulic cylinders, align the machine body, flatten the tracks, switch off the power, and park in a level, secure area.

2026-04-14

Daily Maintenance of Drilling Rigs (Rock-Drilling Rigs)

Inspect the trolley body, boom, telescopic arm, and swing arm for cracks, deformation, or weld failures; ensure that all hinge pin joints are intact and free of looseness. Verify that the travel tires or tracks are in good condition, that all travel‑mechanism bolts are securely tightened, and that the brakes function reliably. Check all hydraulic cylinders, high‑pressure hoses, and distribution valves for damage or leaks, and confirm that the hydraulic fluid level and quality meet specifications. Ensure that the rock drill, propulsion mechanism, and compensation system operate smoothly, with normal impact and rotation functions. Inspect air‑ and water‑supply lines and high‑pressure hoses for integrity—no signs of aging, bulging, or cracking—and verify that all fittings are properly sealed. Test the control panel instruments, operating levers, and solenoid valves for responsiveness and reliability, and confirm that explosion‑proof electrical equipment, lighting, and alarm systems are in good working order. Finally, ensure that safety guardrails, emergency stop switches, and limit devices are complete and effective. During operation, observe that all boom extensions and swings move smoothly without shaking, binding, or unusual noises. Monitor hydraulic system pressure and oil temperature to keep them within normal ranges, and strictly avoid over‑pressurization or overheating. During rock‑drilling operations, ensure proper coordination among impact, rotation, and feed motions, and prevent dry‑drilling or jamming. Continuously check that air and water supplies are adequate and that cooling and dust‑removal performance remain satisfactory. While traveling, confirm that braking and steering are responsive and that movement is stable without deviation. If any pipe bursts, oil leaks, malfunctions, or abnormal noises occur, immediately stop the machine, disconnect power and air supply, and prohibit further operation. Thoroughly clean the trolley body, booms, rock‑drilling unit, and travel components, removing rock dust, mud, and debris. Lubricate all hinge pins, boom slew bearings, sliding rails, and travel bearings. Clean air‑ and water‑filter assemblies, nozzles, and oil‑line filters. Inspect the piston rods of all hydraulic cylinders for scratches or rust; lightly rusted areas should be promptly sanded and protected. Tighten all loose bolts, hose clamps, and electrical connections throughout the machine. Retract all booms to their neutral positions, depressurize the hydraulic cylinders, park the equipment on a level, secure surface, and disconnect water, air, and power supplies, taking appropriate measures to protect against dust and moisture.

2026-04-14

Daily Maintenance of Mining Drilling Rigs

Inspect the drilling rig frame, slide rails, and drill boom for deformation, cracks, or weld failures; ensure all mounting bolts are present and securely tightened. Verify that drill rods and drill bits are in good condition—free from excessive bending, wear, or chipping—and that rod threads are intact with no stripped threads. Check the hydraulic system: confirm adequate fluid levels, inspect hydraulic hoses, fittings, and cylinders for leaks, and ensure filters are clean and unobstructed. Ensure proper lubrication and smooth operation of the propulsion cylinder, rotary mechanism, and feed chain/rails. Inspect water and air supply lines for integrity, verify flexible valve operation, and confirm no leaks. For the electrical system, ensure wiring is undamaged, connections are secure, explosion-proof equipment remains safe, and control buttons and instruments function sensitively and accurately. Finally, verify that protective guards and safety barriers are complete and in good working order. During drilling operations, monitor rotational speed and thrust pressure to ensure stability, with no jamming, vibration, or unusual noises. Continuously check drill rod connections for tightness, preventing loosening or disengagement to avoid breakage or loss of rods. Keep track of hydraulic oil temperature and system pressure, ensuring they remain within normal ranges and avoiding overpressure or overheating. Confirm the water‑cooling system is functioning properly, providing adequate cooling to the drill bit and preventing dry drilling or thermal damage. If abnormal pressure, unusual sounds, leaks, or severe tool vibration occur during operation, immediately stop the machine and conduct a thorough inspection. Clean rock dust, mud, and debris from the rig body, slide rails, drill boom, and all mechanical joints to maintain equipment cleanliness. Apply grease or lubricant to slide rails, chains, rotary bearings, and all pivot points. Flush and clean water‑supply filters and nozzles to prevent clogging. Inspect drill tools for wear; promptly replace any bits or rods exceeding wear limits and store them separately. Tighten any loose bolts or pipe clamps on the entire rig, and identify and address potential issues such as aging or leaking hydraulic lines. Retract the drill boom and drill rods, return the equipment to its designated position, disconnect water, air, and power supplies, and implement appropriate dust‑proofing measures.

2026-04-14

Daily Maintenance of Mining Loaders

Inspect the entire machine’s frame, boom, bucket, and rocker arm for cracks, weld failures, or deformation; ensure all hinge pins and bushings show no severe wear or looseness, and that all grease fittings are present and unobstructed. Verify that engine oil, coolant, hydraulic fluid, transmission fluid, and brake fluid levels are normal, with no emulsification, darkening, or shortages, and confirm there are no leaks of oil, water, or air throughout the machine. Check tire pressure and tread condition, ensuring rims and bolts are securely tightened with no signs of loosening. For underground models, pay particular attention to explosion-proof electrical components, cables, and junction boxes—ensuring no exposed insulation or loss of explosion-proof integrity, and that grounding is intact. Test the braking and steering systems for responsiveness and reliability, confirming proper pedal travel and no wandering or sticking. Confirm that lights, horns, reverse‑warning devices, and emergency stop mechanisms are functioning properly. During operation, continuously monitor engine coolant temperature, oil pressure, hydraulic fluid temperature, and transmission temperature to ensure they remain within specified limits, with no high‑temperature alarms. Listen for any unusual noises or excessive vibrations, and verify that the work equipment lifts and tilts smoothly without jamming or erratic movement. Dynamically inspect hydraulic lines, cylinders, and joints for leaks, and ensure the braking system responds promptly. Observe exhaust smoke color, confirming it is normal—no black, blue, or white smoke indicates abnormal conditions. If any unusual noises, leaks, or temperature anomalies are detected during operation, immediately shut down the machine for inspection; operating with known issues is strictly prohibited. Thoroughly clean the machine body, radiator, cab, and bucket, removing accumulated coal dust, rock debris, and oil contamination. Lubricate all hinge pins, steering pivot points, and universal joints on the drive shaft until excess grease emerges. Retighten hub bolts, frame fasteners, key boom attachment bolts, and all pipeline connections. Inspect seals and hoses for aging or damage, promptly marking and reporting any potential hazards. When parking, lower the bucket to rest on the ground, depressurize the hydraulic cylinders, and disconnect the main power supply. Underground equipment should be stored in a dry, safe area free from water exposure and loose rocks, with chocks placed under wheels to prevent slipping.