Container side cranes are key equipment in ports, yards and other places. Their maintenance is essential to ensure safe, efficient and long-life operation. Maintenance work should follow the manufacturer’s operating manual and make a detailed plan based on actual working conditions. la durée de vie de la grue augmente et que la charge augmente pendant son utilisation, la grue présentera également des défauts courants.
Las grúas laterales para contenedores son equipos clave en puertos, patios y otros lugares. Su mantenimiento es crucial para garantizar un funcionamiento seguro, eficiente y duradero. Los trabajos de mantenimiento deben seguir el manual de funcionamiento del fabricante y elaborar un plan detallado basado en las condiciones de trabajo reales.
The following are some key maintenance points:
1. Daily inspection and maintenance/Inspección y mantenimiento diarios
1) Visual inspection:Inspección visual:
Check the whole machine structure (main beam, outriggers, connectors, etc.) for obvious deformation, cracks, rust or paint peeling.
Check all wire ropes (hoist, trolley, spreader) for broken wires, wear, flattening, kinking, rust, poor lubrication, etc., paying special attention to the fixed end and drum winding area.
Check the pulleys and drums for cracks, excessive wear, and damage to the rope grooves.
Check whether the lifting equipment (rotary lock, guide plate, telescopic mechanism, hydraulic pipeline, cable, etc.) is intact, whether the operation is normal, and whether the lock is worn.
Check the hydraulic system: whether there are leaks in the pipes and joints, and whether the oil level in the tank is normal.
Check the electrical system: whether the cables (especially the drag chain cables or reel cables) are damaged, squeezed or aged; whether the control cabinet and junction box are well sealed and have no abnormal heat or odor; whether the limit switches and sensors are intact and clean.
Check the running mechanism: whether the track is clean and free of debris; whether the wheels have abnormal wear and cracks; whether the track pressure plate is tight.
Check brakes (hoist, trolley, truck): brake pad wear, brake disc/drum cleanliness, and whether the brake release is flexible and effective.
Check safety devices: whether the limit switches (lifting height, trolley travel, truck travel, sling opening and closing, etc.), anti-collision devices, anemometers, sound and light alarms, etc. are functioning properly.
Check that ladders, platforms and railings are secure and intact.
2) Functional testing:/Pruebas funcionales:
Operate each mechanism (hoisting, trolley, truck travel, spreader rotation/extension/opening and locking) to run at low speed and no-load, and confirm that the movement is smooth, without abnormal noise or vibration.
Test whether each brake can brake effectively at the specified position.
Test whether all safety limit devices operate accurately in the set positions.
3) Cleaning:/ Limpieza:
Remove dust, oil, and debris from the equipment (especially near moving parts and electrical equipment).
Keep the driver’s cab and control cabinet clean and dry.
4) Lubrication (according to the lubrication chart):/
Lubricación (según cuadro de lubricación):
Refill or add oil to the designated lubrication points (bearings, pins, gears, chains, open gear tooth surfaces, wire ropes, etc.). Special attention: Use the specified brand of lubricant, as excessive or insufficient lubrication will be harmful.
2. Regular maintenance (weekly/monthly/quarterly)/Mantenimiento regular (semanal/mensual/trimestral)
More detailed inspection:/Inspección más detallada:
Conduct deeper and more detailed inspections of routine inspection items. Use tools (e.g. flashlight, magnifying glass) to inspect critical structural welds, high stress areas.
Measure key dimensions (such as wheel rim thickness, tread diameter, brake clearance, wire rope diameter, etc.) and record them, comparing them with the standard value or the last measured value.
Check the tightening torque of the connecting bolts of the structural parts (especially the main stress-bearing parts), and retighten or replace them according to the standard requirements.
Check the oil quality of the hydraulic system (take samples for testing or observe color, viscosity, and impurities), and replace the hydraulic oil and filter element if necessary.
Clean the dust inside the electrical control cabinet and check the tightness of the wiring terminals for signs of overheating.
Test the emergency stop button functionality.
Check the wear of the slip rings and carbon brushes of the cable reel (if any).
Adjustment:Ajuste:
Adjust the brake clearance to the specified range.
If the limit switch position is off, adjust it in time.
Adjust the clearance of the sling rotation lock to the specified range.
Supplement/Replacement:/Suplemento/Reemplazo:
Refill or replace hydraulic oil, lubricating oil, and grease.
Replace any brake pads that are worn beyond the specified limit.
Replace worn or damaged pulleys, bearings, pins and other wearing parts.
Replace aged and damaged hydraulic hoses and seals.
If the battery performance deteriorates, it needs to be replaced in time.
3. Annual maintenance/overhaul/Mantenimiento/revisión anual
Comprehensive inspection and assessment:/Inspección y evaluación integral:
Entrust a professional organization or have an experienced engineer conduct a comprehensive structural flaw detection (ultrasonic, magnetic powder, etc.), especially the key load-bearing parts such as the main beam, outriggers, door frames, and hanger beams.
Carry out comprehensive anti-corrosion inspection and repair (rust removal and repainting) of the metal structure of the entire machine.
Thoroughly disassemble and inspect key components: reduction box (check gear and bearing wear, replace lubricating oil), motor (check winding insulation, bearings), reel, coupling, wheel set, etc.
Thoroughly clean the hydraulic system, change the oil, replace all filter elements, and test the system pressure and flow.
Conduct a comprehensive inspection of the electrical system: insulation resistance test, cable aging assessment, control system function test and calibration, PLC program backup, and check the status of the inverter (if any).
Fully calibrate all safety devices, sensors, limit switches.
Measure the main geometric accuracy (such as main beam camber, deflection, outrigger verticality, track gauge, diagonal, etc.).
Key parts replacement:/Reemplazo de piezas clave:
Replace the wire rope that has reached the scrap standard based on the inspection results and service life.
Severely worn wheels and tracks need to be replaced in a timely manner.
Replace bearings, seals, etc. that have reached the end of their service life.
Replace severely aged electrical cables or components.
System upgrade and transformation:/Actualización y transformación del sistema:
As needed, carry out necessary technical upgrades or safety modifications (such as installing new monitoring systems, updating control system hardware/software).
4. General principles and precautions for maintenance/Principios generales y precauciones para el mantenimiento
Follow the manufacturer’s manual: This is the most authoritative basis, including specific lubrication points, cycles, oil types, torque values, maintenance procedures, etc.
Establish a complete maintenance system: formulate detailed daily, weekly, monthly, quarterly and annual inspection plans and checklists, and strictly implement them.
Complete records: Record in detail the content of each inspection, maintenance, and repair, problems found, measures taken, parts replaced, responsible persons, dates, etc. Establish equipment files.
Use qualified spare parts and consumables: Use original spare parts and lubricants or those that meet the manufacturer’s specifications.
Professional training: Maintenance personnel must undergo professional training and be familiar with equipment structure, principles, maintenance procedures and safe operating specifications.
Safety First:
Before maintenance, the lockout and tagout procedure must be performed to ensure that the equipment is completely powered off, the energy source is isolated, and a warning sign is hung.
Safety support blocks must be used when working under potentially moving parts.
When working at height, you must wear a safety belt and use a qualified platform or scaffolding.
Note the hydraulic system pressure relief.
Follow all site safety regulations.
Pay attention to the operating status: Operators and maintenance personnel should pay close attention to abnormal sounds, vibrations, odors, temperature rises, performance changes, etc. during equipment operation, and report and handle them in a timely manner.
Environmental adaptability maintenance: Equipment operating in harsh environments (such as high salt spray, high dust, extreme cold/extreme heat at the seaside) requires more frequent cleaning, inspection and anti-corrosion treatment.
Condition monitoring: If conditions permit, condition monitoring technologies such as vibration analysis, oil analysis, and infrared thermal imaging can be used to achieve predictive maintenance and detect potential faults in advance.
5. Key system maintenance prioritiesPrioridades clave de mantenimiento del sistema
Structure: Anti-crack, anti-deformation and anti-corrosion are the core. Regular flaw detection and anti-corrosion are essential.
Wire rope: Daily visual inspection is the basis, regular diameter measurement, and strict scrapping according to standards.
Braking system: Ensure sufficient braking torque, quick response and complete release. Check wear and adjust clearance regularly.
Hydraulic system: Keeping the oil clean (regularly changing the oil and filter) is the key to the longevity of the system. Prevent leakage.
Electrical system: Prevent dust, moisture, corrosion, and looseness. Pay attention to the status of cables, connectors, and safety devices.
Spreader: The twist lock, guide plate, telescopic mechanism and hydraulic locking device are the core to ensure reliable operation and safe locking.
Travelling mechanism: track maintenance (straightness, cleanliness), wheel condition inspection and replacement.
Summarize:
The maintenance of side cranes is a systematic and long-term work that requires scientific planning, strict execution, and meticulous records. Adhering to the principle of “prevention first, combining maintenance and repair” and investing necessary maintenance resources is the fundamental way to ensure the safe, reliable, and efficient operation of equipment and maximize the service life of equipment and return on investment. Be sure to develop a detailed maintenance plan based on your specific equipment model and manufacturer’s manual.
El mantenimiento de las grúas laterales es una tarea sistemática y a largo plazo que requiere planificación científica, implementación estricta y registros detallados. Adherirse al principio de “prevención primero, combinando mantenimiento y reparación” e invertir los recursos de mantenimiento necesarios son las formas fundamentales de garantizar el funcionamiento seguro, confiable y eficiente de los equipos y maximizar la vida útil de los equipos y el retorno de la inversión. Asegúrese de desarrollar un plan de mantenimiento detallado basado en el modelo de equipo específico y el manual del fabricante.
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Post time: Jun-02-2025