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A comprehensive overview of crawler cranes
Feb 07,2025
Crawler cranes have always been irreplaceable lifting machinery in engineering lifting construction due to their own advantages.
Introduction
Crawler cranes are cranes mounted on crawlers that can travel on rough and uneven roads. Unlike wheeled cranes, crawler cranes have excellent stability and maneuverability on soft or uneven ground, making them ideal for large construction projects, including large venue construction, bridges, wind power, petrochemicals, etc. The main brands are Liebherr, Terex Demag, Manitowoc, Hitachi, Kobelco, IHI, Zoomlion, XCMG, Sany, etc.
Advantages
1. Small ground pressure, can adapt to relatively bad ground
2. Small turning radius
3. Large climbing ability
4. Good lifting performance
5. Can travel with load
6. Can realize multiple uses of one machine
7. Large working height and amplitude
Structure
Crawler crane is a crane equipped with a walking device, lifting device, luffing device, and slewing device on a walking crawler chassis. The various components are coordinated to ensure optimal performance. Key components include:
1. Crane boom: A steel structure used to support the lifting wire rope and pulley block, which can pitch to change the working radius. The boom can be extended on the basis of the basic boom according to construction needs.
2. Chassis components: The undercarriage parts includes crawler tracks, drive wheels, idlers, track rollers, carrier rollers, travel motors, travel reduction boxes, crawler tensioners, crawler telescopic cylinders, etc., which can ensure smooth movement on uneven ground. These crane components are crucial to the mobility and balance of the crane.
3. Slewing bearing: Installed on the lower chassis to support the upper slewing part.
4. Counterweight: A shaped iron block installed at the tail of the crane slewing platform to ensure that the crane can work stably. If necessary, these iron blocks can be removed and carried separately.
5. Other cranes parts: The overall function of the crawler crane is driven by its many components, such as hydraulic systems, winches and pulleys, which enable it to perform tasks such as lifting and positioning heavy objects.
Crane accidents
Although crawler cranes are designed to be sturdy, accidents can still occur if they are not properly maintained. Some common accidents include: tipping, arm folding/breaking, unhooking, electric shock, squeezing, rope breaking, etc. Among them, the proportion of crane tipping accidents is relatively large, and there are many and not single reasons for tipping. Such as insufficient ground bearing capacity, uneven ground, strong winds, overloading, lateral loading, sudden stop, multiple machine lifting errors, etc.
Maintenance points
Proper maintenance of lattice boom crane parts is essential to extend the service life of crawler cranes and ensure safe operation. Here are some maintenance points:
1. Track maintenance, bottom maintenance cannot be ignored
2. Pay attention to the rust and corrosion of the entire vehicle's external structure
3. Regularly lubricate, pay special attention to key interfaces
4. Regularly check the core generator
Conclusion
Crawler cranes are essential to many construction projects. Understanding the complex design and critical components is essential for operators and maintenance teams. By following proper maintenance practices and staying alert to common incidents, you can ensure your crawler crane will operate reliably and safely for a long time.
Explore a range of high-quality crawler crane parts to ensure your equipment remains in top condition.
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comprehensive overview of crawler cranes
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