Single Jib Mobile Portal Crane for Heavy-Duty Harbor & Port Operations

What is Single Jib Mobile Harbour Portal Crane?

A single jib mobile portal crane is a traveling portal crane equipped with a single-boom slewing jib mechanism, mounted on an elevated gantry frame that travels along quay rail tracks.

• Working Principle: Moving along dockside tracks at speeds between 15 and 30 m/min, the mobile portal crane utilizes 360-degree slewing (1.5 R/min) and variable-speed luffing over an arm length of 8 m to 70 m to transfer materials across working radii from 8.5 m to 100 m.

• Structural Single Jib Advantages: The single-jib configuration provides a simplified structural framework with a reduced overall deadweight while maintaining high lifting capacity. This streamlined mechanical design reduces wind resistance, simplifies structural maintenance, and offers an economical capital investment for general breakbulk, bulk material, and container handling.

• Main Assemblies: Consists of a high-strength portal gantry frame weighing 45,026 kg (99,265.34 lb), a heavy slewing turntable, a single-boom lattice jib, an enclosed operator cabin with optional remote control, pressure vessels, gearboxes, motors, and centralized PLC electrical systems.

Key Features

• Robust Structure: Heavy-duty structural steel frame engineered for continuous port duty, supporting lifting capacities from 20 to 80 tons.

• High Safety Performance: Equipped with overload limit switches, storm anchoring locks, emergency stop controls, pressure vessel safety valves, and anti-collision monitoring.

• Precise Load Control: Driven by an integrated PLC control system supporting cabin control and wireless remote control for micro-speed positioning over a 100 m radius.

• Easy Maintenance: Simplified single-boom geometry with accessible gearboxes, bearings, motors, and centralized lubrication points shortens maintenance downtime.

• Long Service Life: Applied with multi-layer marine anti-corrosion protective coatings and durable drive components built for long-term oceanfront exposure.

• Energy Efficiency: Optimized motor-gearbox drive trains reduce electrical energy consumption during high-frequency handling cycles.

Applications

• Harbors & Ports: Efficiently handles container loading, breakbulk cargo transfer, and heavy freight distribution along commercial quay runways.

• Manufacturing Plants: Transports heavy machinery modules, structural steel sections, and raw materials between docks and production bays.

• Steel Mills: Moves heavy steel coils, slabs, structural billets, and raw scrap metal across waterfront storage yards.

• Warehouses & Logistics Hubs: Connects dockside rail tracks with open storage yards to accelerate intermodal freight distribution.

• Shipyards: Assists in hull block positioning, steel plate handling, and vessel repair operations along drydocks.

• Power Plants: Offloads massive power generation modules, turbines, boilers, and transformers at receiving docks.

• Mining Industry: Manages bulk mineral transfer, ore handling, and heavy mining equipment staging at coastal terminals.

Why Choose Zehua

• Professional Crane Manufacturing Experience: Based in Henan, China, Zehua is an original crane manufacturer with extensive engineering facilities dedicated to producing overhead, gantry, jib, and portal cranes.

• Customized Design Capability: We engineer every mobile portal crane project to exact site parameters—tailoring rail spans, boom lengths (8–70m), lifting capacities (20–80t), and control setups.

• International Quality Standards: Equipment is designed, fabricated, and inspected in strict compliance with FEM, DIN, IEC, AWS, and GB standards.

• Strict Quality Inspection: Every mobile portal crane undergoes complete structural evaluation, certified Machinery Test Reports, and video outgoing-inspections prior to shipment.

• Global After-Sales Support: Backed by a 1-year warranty, global remote engineering assistance, site commissioning guidance, and engineers available overseas for maintenance.

Installation & Maintenance

• Installation Requirements: Terminal runways must feature pre-aligned rail tracks rated for heavy portal wheel loads, supported by adequate terminal power hookups and auxiliary mobile cranes during erection.

• Daily Inspection Points: Inspect wire ropes, braking systems, slewing ring lubrication, safety limit switches, rail clamps, and pressure vessels before operating the mobile portal crane.

• Maintenance Recommendations: Perform scheduled checks on gearbox oil levels, monitor PLC diagnostic logs, check structural welds, and refresh anti-corrosion protective coatings.

• Spare Parts Availability: Zehua maintains direct factory inventory for core replacement parts—including bearings, motors, gear sets, seal kits, and PLC modules—for rapid global shipment.

Frequently Asked Questions (FAQ)

Q: What lifting capacity and working radius does a Zehua mobile portal crane offer?

A: Zehua single jib mobile portal crane units offer lifting capacities ranging from 20 tons to 80 tons (with standard models rated at 20 Ton and 70 Ton) and a flexible working radius extending from 8.5m to 100m.

Q: What are the advantages of a single jib mobile portal crane design?

A: A single jib mobile portal crane features a simpler structural framework, lower deadweight, and reduced wind resistance. This offers high lifting performance with lower initial capital costs and easier long-term maintenance.

Q: Does Zehua dispatch engineers overseas for installation and after-sales service?

A: Yes. As an original equipment manufacturer, Zehua provides full after-sales support, including certified test reports, video outgoing-inspections, and dispatching experienced engineers overseas for on-site installation and commissioning.

Q: Can Zehua customize the mobile portal crane to match our port infrastructure?

A: Yes, we provide full custom OEM engineering. We customize arm lengths (8m–70m), rail spans, lifting heights (up to 45m), control methods, and paint color to integrate smoothly into your terminal layout.