The LZ Series Electric Single Girder Grab Crane is a specialized lifting solution, integrating a standard LD-type single girder structure with a dedicated grab trolley system. It is designed for reliable and efficient handling of bulk materials in diverse settings such as factories, warehouses, and storage yards.
Core Configuration:
This crane system comprises a main beam, end beams, an electric hoist trolley, a four-rope grab bucket, a festoon cable system, and a comprehensive electrical control unit.
Key Specifications & Operational Data:
Duty Class: A3
Lifting Capacity: Available in 3t and 5t models
Span Range: 7.5m to 28.5m
Lifting Height: 6m to 30m
Ambient Temperature: Suitable for -20°C to +40°C
Control Options: Remote, pendant, or cabin control
Grab Orientation: Configurable with the grab opening parallel or perpendicular to the main beam.
Usage Note: Not approved for use in flammable, explosive, or highly corrosive atmospheres.
Product Advantages:
Robust Performance & Durability: Engineered for high-intensity cycles and an extended service life.
Cost-Effective Operation: Features a straightforward design that simplifies installation, minimizes maintenance needs, and reduces long-term ownership costs.
Component Standardization: Utilizes widely available, universal parts for easy servicing and replacement.
Mechanical Engineering & Manufacturing Excellence:
Main Girder Construction: Fabricated from a single welded steel box section (Q235B, Q345B, Q355E grades), designed to meet DIN/FEM deflection standards. The connection to end beams uses high-strength bolts for structural integrity.
Surface Preparation & Protection: All steel components undergo shot blasting to relieve stress and improve paint adhesion. The corrosion-resistant coating system includes an epoxy zinc-rich primer (120μm) finished with alkyd enamel, ensuring a long-lasting, aesthetically pleasing finish.
Precision Cutting: Structural plates are cut using advanced German CNC plasma technology, guaranteeing high precision with minimal thermal deformation and deviations held within 1mm.
Advanced Welding Technology: Primary beam welding employs intelligent robotic systems. Internal seams use MAG welding with Ar/CO2 gas shielding, while external critical joints are completed via automated submerged-arc welding for superior strength.
Rigorous Quality Assurance: All critical welds on the main and end beams are inspected using radiographic (X-ray) and ultrasonic testing to ensure flawless quality and structural soundness.
Integrated Safety & Protection Systems:
Load Moment & Overload Protection
Emergency Stop & Phase Sequence Protection
Over-current, Short-circuit, and Undervoltage Protection
Travel Limit Switches for both Long and Cross Motions
Anti-derailment & Anti-falling Devices for Trolley and Crane
High-grade Polyurethane Buffers
Safety Hook Latches
Audible/Visual Travel Alarms
Enclosures with high IP Ratings (IP44, IP54, IP55)
Weather Protection Covers for outdoor applications (e.g., rain covers for mechanisms and electrical cabinets)
The LZ Series Single Girder Grab Crane is engineered for the demanding task of transporting and managing loose, bulk materials. It delivers precision and reliability in environments where handling volume and efficiency are critical.
Primary Industrial Applications:
This specialized overhead crane is an ideal solution for automated material movement in sectors such as:
Recycling & Scrap Yards: For efficiently handling and sorting bulk scrap metal, fragmented materials, and industrial by-products.
Power Generation & Boiler Plants: To manage fuel sources like coal and biomass, ensuring a continuous supply for energy production.
Construction Material Processing: For moving and loading aggregates, including sand, gravel, cement, and other raw powders or granules.
Metallurgy & Foundries: Used in handling coke, metal slag, and other raw materials involved in smelting and metal production processes.
Ports & Logistics Terminals: Facilitating the rapid transfer of bulk goods in storage yards and warehouse facilities.
Operational Advantage:
By integrating a dedicated four-rope grab bucket, the LZ crane transforms standard lifting operations into a seamless, high-volume handling system. Its robust A3 duty class construction ensures consistent performance in tough conditions, from -20°C to +40°C. The availability of remote, pendant, or cabin control offers operational flexibility, allowing for precise grab placement—whether oriented parallel or perpendicular to the crane's travel path—to maximize workflow efficiency and storage density.
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