The portal slewing crane with grab is a highly efficient and integrated bulk material handling equipment, specifically designed for large-scale material handling, with an efficiency of up to 500-1,500 tons per hour. Its core feature lies in the portal structure, combined with a closed-type hopper and conveying system, enabling continuous operation of material grabbing and transferring. The compact design allows it to operate efficiently even in limited space while reducing dependence on site layout. It is mainly used for wharf loading and unloading of bulk cargo such as coal, ore, and grain, and is especially suitable for ports with medium to high throughput. With its characteristics of high efficiency, environmental friendliness, and intelligent operation, this equipment has become one of the main loading and unloading machines at modern bulk cargo terminals.
Product Advantages
1. Slewing bearing design with the same service life as the entire machine
We have manufacturing experience and processing techniques accumulated and refined over decades, and we are also a member of the Boom Crane Standardization Committee. Our slewing bearing processing technology, together with a relatively ample safety service factor, can ensure that the most important mechanical component of a portal slewing crane—the slewing bearing—has the same service life as the entire machine.
2. Low center of gravity design
The design concept of a high boom with a low slewing platform lowers the center of gravity of the portal crane and improves the stability of the entire machine.
3. Low wire rope wear design
The ordinary lay method is adopted to reduce wire rope wear, increase service life by more than 20%, and reduce replacement costs.
4. Quick spreader changeover
The quick-change interface ensures smooth changeover between grab and hook within 3-5 minutes.
5. Pure electric drive
Environmentally friendly and energy-saving, with the entire machine powered within a range of 380V to 20kV.
6. Rail-mounted operation
Steel wheels can carry greater loads with less wear, do not require frequent wheel replacement, and have lower maintenance costs compared with tire-mounted cranes.
7. Multiple safety guarantees
Inherent safety of the crane has always been our goal. Through redundant design of multiple safety protections and real-time online cloud monitoring system, the safe use of the crane is effectively ensured.
8. High loading and unloading efficiency
Maximum bulk cargo loading and unloading efficiency: 1,500 t/hour.
9. High efficiency and energy saving
Continuous operation reduces interruptions. Compared with traditional processes, the secondary transfer step is eliminated, reducing energy consumption and costs.
10. Environmental compliance
Dust suppression technology greatly reduces material spillage, supporting green port construction.
11. Automated operation
The integrated control system supports remote operation and automated operation, improving operational precision and safety.
12. Grab anti-sway system
The portal slewing system is modeled, the grab sway angle is calculated, and the slewing and luffing speeds are intelligently controlled to eliminate the sway angle, achieving an anti-sway effect.
13. Energy feedback system
The electrical energy generated during load lowering or motor deceleration is fed back to the power grid to realize energy recovery and utilization, achieving the purpose of energy saving and emission reduction.
14. Energy recovery system
The electrical energy generated during load lowering or motor deceleration is stored in batteries or supercapacitors and released during the next operation, realizing energy recovery and utilization while also reducing the input power of the entire machine.
15. High power factor and low harmonic content
An intelligent compensation and harmonic elimination system is adopted to improve the power factor, reduce line losses, and optimize power quality.
Application Scenarios
1. Port wharves: Used for loading and unloading cargo from ships and vehicles, mainly equipped with grabs for bulk cargo operations, while also capable of handling containers and general cargo.
2. Railway freight yards: Loading and unloading of trains, mainly equipped with grabs for bulk cargo operations, while also capable of handling containers and general cargo.
Optional Configurations
1. Lifting attachments: Optional hook, grab, container spreader, electromagnetic spreader, hook beam, C-type steel coil spreader, etc.;
2. Intelligent systems: Optional cloud monitoring, video surveillance, remote control, condition monitoring, intelligent lightning protection system, automatic fire extinguishing, automatic spreader tracking system;
3. Energy-saving systems: Energy feedback system, energy recovery system;
4. Bulk cargo receiving systems: Mobile hopper, fixed hopper, towed hopper;
5. Hopper environmental protection: Dry fog dust suppression system, spray dust suppression system, negative pressure dust suppression system.
