Truck-mounted cranes are a type of construction vehicle, and many accidents in the construction industry are caused by wire rope breakage. These accidents could often be avoided with proper care and attention during operation. One important aspect of truck-mounted crane maintenance is the wire rope, which should not be overlooked.
Why Does the Wire Rope Break?
Here are some common reasons for wire rope failure:
- Rope Jumping out of the Groove: When lowering the hook, the wire rope can sometimes pop out of its groove and get stuck in the gap. If the crane exerts force, the wire rope may get caught and snap.
- Overloading: Lifting cargo that exceeds the crane’s load capacity can result in the wire rope being unable to bear the weight, leading to overstrain and breakage.
- Lack of Regular Maintenance: Regularly applying grease or oil to the wire rope reduces friction, helping to prevent wear and tear.
- Fraying of the Wire Rope: If you notice that the wire rope is fraying, it’s important to replace it immediately. Always prioritize safety!
Key Maintenance Tips for the Truck-Mounted Crane
- Check for Aging and Leaks: Regularly inspect the pipes, valves, and oil seals for signs of aging or leaks. Also, check the hydraulic oil levels, cleanliness, and viscosity.
- Monitor the Control Valves for Leaks: Check if the legs retract or extend automatically, or if the boom drops after being raised, indicating leakage in the control valves.
- Listen for Unusual Noises: Pay attention to any strange sounds coming from the power take-off unit, oil pump, rotary mechanism, or winch, which may indicate mechanical issues.
- Lubricate Key Points: Make sure to lubricate the rotary bearing and the pivot points of the hydraulic cylinders regularly.
- Inspect the Wire Rope and Pulleys: Look for any broken or frayed strands in the wire rope. Check the pulleys for damage or deep grooves, and make sure the hook is not overly worn.
Why Is Wire Rope Maintenance Important?
In the specialized vehicle market, truck-mounted cranes are quite popular, with models available in a range of capacities, from smaller 2-ton, 4-ton, and 5-ton cranes to larger 16-ton, 20-ton, and even 25-ton cranes. These cranes are favored because they can both lift and transport cargo, making them versatile and reliable for users.
By regularly maintaining the wire rope and following these tips, you can ensure that your truck-mounted crane operates safely and efficiently.