Definition and Basic Parameters
Second-hand crawler cranes refer to heavy lifting equipment that has been put into use but still has a good working condition. Their core feature is that they achieve movement and positioning through a crawler traveling system. This type of crane usually has a lifting capacity ranging from 50 tons to 1,000 tons. The main boom length can extend from 30 meters to over 150 meters. Some models can also be equipped with an overlift device to enhance stability. Second-hand equipment, while maintaining core performance, usually costs only 30% to 50% of new machines, offering a significant cost advantage.
Main Features
Outstanding ground adaptability
The wide track ground contact area effectively reduces ground pressure, allowing for stable operation on soft, muddy and other harsh ground conditions, and is suitable for complex terrains that ordinary wheeled cranes cannot enter.
01
Superior lifting performance
It adopts a high-strength steel structure boom system and is designed with multiple sets of pulley blocks to achieve large-tonnage and long-distance lifting operations.
02
Modular design
The main arm, auxiliary arm, counterweight and other components can be quickly disassembled and assembled, facilitating transportation and on-site assembly.
03
Intelligent control system
Most second-hand equipment retains the original factory's safety functions such as torque limiting, wind speed monitoring, and automatic balancing, ensuring precise and reliable operation.
04
Core Advantages
Outstanding cost performance
Second-hand equipment significantly reduces procurement costs, and the remaining service life of major structural components is usually over 60%, with a short investment payback period.
Wide range of operations
The lifting capacity covers the installation of small and medium-sized equipment to the hoisting of large components, meeting diverse engineering requirements.
Excellent stability
The track chassis offers an extra-large support surface, combined with adjustable counterweights, ensuring safety during heavy-load operations.
Convenient maintenance
The main components have a high degree of standardization, and maintenance and repair are relatively simple, with an abundant supply of spare parts.
Key Functions
Heavy-duty hoisting
Capable of undertaking the installation operations of overweight and super-large components such as large steel structures, prefabricated Bridges, and wind power equipment.
Luffing operation
The main arm Angle is precisely adjusted through the hydraulic system to meet the hoisting requirements of different heights and radii.
360-degree rotation
The full-rotation platform enables all-round operations at a fixed position, enhancing work efficiency.
Multi-condition configuration
By combining main booms, auxiliary booms and super-lifting devices of different lengths, various hoisting schemes can be formed.
Typical Application Scenarios
Energy Construction Projects
Installation of wind turbine generators, hoisting of nuclear power plant equipment and other large-scale projects.
01
Bridge Construction
Heavy hoisting tasks such as the erection of prefabricated beam sections and the construction of bridge piers.
02
Port Terminals
Large equipment loading and unloading, container hoisting and other operations.
03
Industrial Construction
Installation and maintenance of large-scale equipment such as chemical plants and oil refineries.
04
Special Environment Operations
Construction requirements in complex terrain conditions such as swamps and mountains.
05
Precautions for Purchase
Structural inspection
Focus on checking whether there are cracks or deformations in key parts such as boom welds, slewing bearings, and track frames.
Hydraulic system
Test whether each cylinder operates smoothly and check for any leakage in the hydraulic pipelines.
Electrical system
Confirm that all safety devices and control systems are functioning properly, especially the torque limiter.
Usage history
Understand the service environment and working intensity of the equipment, and give priority to choosing equipment with good working conditions.
Key Points for Maintenance and Care
Regular lubrication
Apply grease to key parts such as the slewing mechanism and track idler wheels on time.
Hydraulic maintenance
Regularly replace the hydraulic oil and filter elements to keep the system clean.
Structural inspection
Before and after each operation, inspect the connection parts of the steel structure to promptly identify and address potential issues.
Long-term storage
Park the equipment on a flat surface, loosen the steel wire rope, and regularly start and operate all components.
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