In construction, bridge erection, and large-scale equipment installation, mobile cranes have become core engineering equipment due to their excellent mobility and lifting capacity.
Faced with diverse models and tonnage, precise selection is key to ensuring project efficiency.
Mounted on vehicle chassis, mobile cranes can travel independently and get operational quickly without complex assembly/disassembly, enabling rapid transfer between different sites. With telescopic booms and luffing mechanisms, they offer wide working ranges and can be equipped with jibs, grabs, and other attachments to adapt to diverse working conditions.
Classification of Mobile Cranes
Truck Cranes
Adopt general-purpose or specialized truck chassis, with highway travel speeds reaching 70-90km/h and the ability to operate normally on ordinary roads. As the most widely used model, they are suitable for scenarios requiring frequent transfers between urban roads and construction sites.
All-Terrain Cranes
Equipped with specialized all-terrain chassis, multi-axle steering, all-wheel drive, and oil-gas suspension systems. They feature strong off-road capability, small turning radii, and outstanding lifting capacity, making them ideal for large-scale projects such as wind power and petrochemical engineering.
Rough-Terrain Cranes
Adopt short-wheelbase designs with four-wheel drive and four-wheel steering. Highly maneuverable, they are suitable for work in confined spaces or on unpaved surfaces, commonly found in ports, freight yards, and factory interiors.
Performance Features of Mobile Cranes
Flexible Mobility & Fast Transfer: Can travel on highways under their own power without trailer transportation, significantly reducing transfer time and improving equipment utilization.
Rapid Job Preparation: Upon arrival at the site, operations can begin after deploying outriggers and adjusting the boom, with no need for complex installation—ideal for multi-site, multi-task projects.
Diverse Lifting Capacity: Ranging from 8-ton small machines to thousand-ton all-terrain models, they meet the demands of construction, industry, energy, and other fields.
Simple & Efficient Operation: Adopt hydraulic drive and electro-hydraulic proportional control for smooth, precise movements. Equipped with safety devices such as load moment limiters and height limiters to ensure operational safety.
Strong Adaptability: Can be fitted with various attachments to expand application scenarios. Outriggers can be adjusted according to ground conditions to suit different working environments.
Structural Components of Mobile Cranes
Chassis System: Uses high-quality truck or specialized all-terrain chassis to provide driving power and load-bearing foundation. Multi-axle steering and all-wheel drive enhance passability in complex road conditions.
Slewing Platform: Connected to the chassis via a slewing bearing, allowing the upper lifting mechanism to rotate 360 degrees for precise positioning of the lifting point.
Boom: A box-type telescopic boom made of high-strength steel, extended and retracted via hydraulic cylinders. Boom length is adjustable, and with a jib, it can achieve greater lifting heights.
Hoisting Mechanism: Composed of hydraulic motors, reducers, drums, and wire ropes. Dual winch synchronization technology ensures stable lifting of large components.
Luffing Mechanism: Adjusts the boom angle via luffing cylinders to change the working radius and lifting height.
Outrigger System: Supports the ground during operation to transfer loads, ensuring lifting stability. H-type or X-type outriggers suit different sites.
Hydraulic System: Adopts a load-sensing hydraulic system that automatically adjusts flow based on load, saving energy and enabling precise control.
Control System: Uses PLC or integrated control systems, equipped with touch-screen HMIs and load moment limiters to display working parameters and safety status in real time.
Application Areas of Mobile Cranes
Construction: Used for vertical transportation and installation of materials such as steel bars, formwork, and steel structures.
Equipment Installation: Used for lifting and positioning large machinery, industrial equipment, and power facilities.
Municipal Maintenance: Used for urban operations such as streetlight installation, bridge inspection, and billboard lifting.
Emergency Rescue: Used to remove obstacles and rescue trapped personnel during earthquakes, fires, and other emergency scenarios.
Port Logistics: Used for cargo handling, container lifting, and ship repair.
Petrochemical Industry: Used for refining unit maintenance, pipeline laying, and equipment replacement, adapting to special safety requirements.
Core Points for Mobile Crane Selection
Define Lifting Requirements: Determine maximum lifting capacity, working radius, and lifting height. Select a model that meets requirements and include a safety margin.
Consider Operating Environment: Prioritize truck cranes for urban roads; choose all-terrain or rough-terrain models for complex off-road terrain.
Focus on Transfer Frequency: For frequent cross-site operations, prioritize truck cranes with high travel speeds and good highway adaptability.
Verify Safety Features: Confirm the inclusion of safety protection devices such as load moment limiters, height limiters, and anemometers.
manufacturers with good brand reputation and comprehensive service networks to ensure spare parts supply and timely maintenance response.
With their flexible, efficient, and highly adaptable characteristics, mobile cranes have become indispensable core equipment in modern engineering. Precise selection is essential to maximize their value.
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