Mobile Harbour Portal Crane for Port, Dock & Heavy Industrial Handling

Product Introduction

Zehua’s mobile harbour portal crane is a heavy-duty material handling solution engineered for docks, ports, and industrial logistics yards. Built to FEM and DIN standards, this versatile mobile portal crane operates alongside dock crane setups, rail mounted gantry crane lines, floor mounted jib crane installations, and shipping container gantry crane systems. Available in single-jib and four-bar linkage designs, our mobile portal crane ensures stable, high-capacity loading and unloading for bulk cargo, steel, and containers.

What is Mobile Harbour Portal Crane?

A mobile harbour portal crane (also referred to as an MQ pedestal portal crane) is a heavy-duty traveling jib portal crane mounted on a rigid pedestal portal frame that travels along ground-level rail tracks or dockside runways.

• Working Principle: Operating along terminal tracks, the mobile portal crane utilizes a 360-degree continuous slewing mechanism, variable-speed luffing system, and motor-driven hoist to manage loads across a flexible lifting height of up to 45 meters and a working radius tailored to port requirements.

• Structural Jib Architectures:

  • Single-Jib Mobile Portal Crane: Features a simplified structural frame, light deadweight, and high strength, offering an economical choice for general freight and breakbulk lifting.

  • Four-Bar Linkage Mobile Portal Crane: Uses a combined lever boom assembly that moves cargo horizontally during luffing. This keeps elevation changes minimal, ensures smooth handling, and lowers motor power consumption during continuous heavy duty.

• Core Structural Assemblies: Includes a high-strength portal frame, slewing turntable, lattice or box jib boom, enclosed cabin, machinery room housing Schneider electrical drives, PLC, pressure vessels, hydraulic pumps, gearboxes, and motors.

Key Features

• Robust Structure: Heavy-duty steel portal frame rated for A4 work duty and max wheel loads of 180–300 kN, supporting deadweights up to 30,000 kg.

• High Safety Performance: Equipped with overload limit switches, storm rail clamps, emergency stop systems, pressure vessel protection, and anti-collision monitoring.

• Precise Load Control: Driven by Schneider electrical components and a PLC control system for smooth, micro-speed positioning of heavy loads.

• Easy Maintenance: Ergonomic machinery deck layout with easily accessible gearboxes, pumps, motors, and centralized lubrication points.

• Long Service Life: Protected by marine-grade anti-corrosion coatings and durable gear trains built to withstand operating temperatures from -20°C to +40°C.

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

Technical Specifications

Applications

• Ports & Docks: Manages breakbulk cargo offloading, heavy equipment transfer, and container distribution along terminal runways.

• Steel Mills & Metallurgical Yards: Moves heavy steel slabs, coils, billets, and scrap metal under tough outdoor operating conditions.

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

• Warehouses & Freight Terminals: Connects rail sidings with open storage yards to speed up heavy inventory handling.

• Power Plants: Offloads heavy turbines, industrial boilers, generators, and transformers at waterfront receiving yards.

• Mining Industry: Facilitates bulk ore transfer and heavy machinery handling at river and ocean export facilities.

Why Choose Zehua

• Professional Crane Manufacturing Experience: Based in Henan, China, Zehua is an original crane manufacturer specializing in overhead, gantry, jib, and portal cranes.

• Customized Design Capability: We offer full OEM design services, customizing lifting capacities (10t–100t), boom reach, lifting heights, and wheel load limits for your site.

• International Quality Standards: Equipment is designed, fabricated, and tested in accordance with international FEM, DIN, IEC, and AWS standards.

• Strict Quality Inspection: Every mobile portal crane undergoes comprehensive factory testing, supported by certified Machinery Test Reports and video outgoing-inspections.

• Overseas After-Sales Support: Backed by a 1-year warranty and a dedicated technical team with engineers available to service machinery overseas for installation, commissioning, and training.

Installation & Maintenance

• Installation Requirements: Site tracks must be level and pre-aligned to support 180–300 kN maximum wheel loads, supported by a standard 3-phase 380V 50Hz power supply and auxiliary crane support during erection.

• Daily Inspection Points: Inspect wire ropes, brake pads, slewing gear lubrication, Schneider electrical controls, safety limit switches, and pressure vessels before each shift.

• Maintenance Recommendations: Conduct periodic checks on gearbox oil levels, hydraulic pumps, motor brushes, and structural welds. Maintain protective anti-corrosion paint.

• Spare Parts Availability: Zehua stocks original factory replacement parts—including bearings, motors, gear sets, pump seals, and electrical modules—for fast worldwide shipment.

Frequently Asked Questions (FAQ)

Q: What lifting capacities are available for a Zehua mobile portal crane?

A: Zehua manufactures mobile portal crane units with rated lifting capacities ranging from 10 tons to 100 tons, including standard 25t, 35t, and 40t models tailored for port, dock, and metallurgical field applications.

Q: How does a single-jib mobile portal crane compare to a four-bar linkage portal crane?

A: Single-jib mobile portal crane models offer a simpler structure, lighter deadweight, and high cost-efficiency. Four-bar linkage mobile portal crane models maintain a horizontal cargo trajectory during luffing, minimizing height fluctuations and energy usage during heavy continuous duty.

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

A: Yes. As an original equipment manufacturer, Zehua provides full overseas technical support. Our experienced engineers are available to service machinery overseas, assisting with assembly guidance, commissioning, and operator training.

Q: Can Zehua customize the mobile portal crane to match our existing track and power supply?

A: Yes, we provide full OEM customization. We can adjust the wheel load (180–300 kN), rail gauge, boom reach, lifting height (up to 45m), and electrical setup to integrate smoothly into your terminal infrastructure.