Single-girder bridge grab crane

Authentication mark:

Single-girder bridge grab cranes are mainly applied in industries such as power, mining, building materials, ports, and chemical engineering

Capacity:

2 tons to 10 tons

Lifting Height:

18 meters

Span:

7.5 to 22.5 meters

Voltage/Hertz:

3 Phase 380V 50hz

Working Class:

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Introduction

Application Scenario

Advantages

Structural Diagram And Parameter Table

INTRODUCTION

The single-girder bridge grab crane consists of a single main girder, end carriages, a grab hoist mechanism (electric hoist with grab attachment), and an electrical control system. It is specifically designed for handling bulk materials such as coal, ore, cement clinker, grain, and waste. The grab opens and closes automatically, allowing efficient grabbing, unloading, and stacking without manual assistance. Lifting capacity typically ranges from 1 ton to 20 tons, with spans up to 30 meters. This crane offers compact structure, low headroom, and cost-effective operation.

APPLICATION SCENARIO

ADVANTAGES

1.Power & Energy Industry – Coal yard feeding and stacking in thermal power plants; waste grabbing and mixing in waste-to-energy and biomass power plants.

2.Mining & Metallurgy – Handling ore, mineral powder, coke, scrap steel, and slag in mines and steel mills.

3.Building Materials & Cement – Moving limestone, sand, aggregates, and cement clinker in cement plants and building material factories.

4.Ports & Freight Terminals – Loading/unloading bulk cargo such as coal, grain, and ore at ports, docks, and railway freight yards.

5.Grain & Food Industry – Grain handling, silo turnover, and raw material stacking in grain depots, flour mills, and food processing plants.

Environmental & Chemical Industry – Waste sorting and corrosive material handling in waste transfer stations, landfills, and chemical plants.

STRUCTURAL DIAGRAM AND PARAMETER TABLE

1.High Efficiency for Bulk Materials – The automatic grab eliminates manual shoveling, greatly improving handling speed for loose materials.

2.Compact and Low Headroom Design – Single-girder structure reduces crane height, making it suitable for workshops with limited headroom.

3.Light Self-weight & Energy Saving – Lower dead weight reduces building load requirements and energy consumption, saving investment and operating costs.

4.Customizable Grab Types – Different grabs available: shell grab for fine materials, motor grab for large lumps, and magnetic or hydraulic grabs for special applications.

5.Easy Maintenance & Reliable Operation – Modular components and simple structure allow quick inspection and low failure rate, ensuring continuous operation.

Six core advantages

Full Scenario Coverage

Nucleon covers over 20 product categories including ladle cranes, multi-purpose cranes, intelligent cranes, overhead/portal cranes, RTG, RMG, deck cranes, portal cranes, girder launchers, yacht cranes, KBK, and jib cranes. From steel smelting to port handling, bridge construction to ship equipment, Nucleon provides one-stop lifting solutions. Whether standard models or extreme-condition customizations, Nucleon possesses mature technical expertise and proven track records, saving customers from dealing with multiple suppliers.

Military-Grade Quality Standards

We use high-strength steel from Baosteel/Ansteel for key structural components, with 100% NDT inspection and one-clamp CNC gantry machining. Every machine undergoes 120% dynamic load and 125% static load tests before delivery, with continuous operation verification under extreme conditions. Even in 24/7 continuous casting plants, -40°C arctic ports, or high-temperature humid ship cabins, our cranes maintain millimeter-level precision and zero-drift stability—quality that stands the test of time.

Extended Longevity & Low Maintenance Cost

Our main girders are FEA-optimized and double-submerged arc welded, with a design life of ≥30 years. Key bearings are lifetime lubrication-free, and hardened travel wheels extend wear cycles by 3 times. Core components feature modular quick-change interfaces with spare parts commonality exceeding 80%. Annual maintenance costs are reduced by 40%~60%, saving millions in lifecycle operating expenses — truly "invest once, benefit long-term."

Energy Efficiency Leader

Our entire series comes standard with IE5 permanent magnet synchronous motors + energy feedback VFD drives, achieving 25%~35% comprehensive energy savings. Single-motor operation under light loads and adaptive speed control reduce electrical waste by over 30%. High-strength steel lightweight design cuts deadweight by 15%~20%, lowering workshop load requirements. A single ladle crane station saves over RMB 150,000 in electricity costs annually, helping customers achieve green and low-carbon production.

Ultimate Safety Redundancy Design

Our hoisting mechanism comes standard with dual brakes + mechanical overspeed switch + triple limit switches, featuring multiple redundant interlocks to prevent load dropping and over-traveling. Large products use box girder torsion-resistant structures, remaining stable even in level 8 gusty winds. Optional intelligent safety monitoring systems detect anomalies in load, skew, wind speed, etc., with automatic alarms and shutdowns. Overall safety redundancy coefficient > 2.0, maintaining zero crane safety incidents for many consecutive years.

Deep Customization & Full Lifecycle Service

We provide complete front-end support from site survey and mechanical simulation to civil review, delivering custom drawings within 2 weeks, with non-standard lead times only 5~7 days longer than standard products. We establish lifelong digital dossiers for customers, warning of end-of-life components 3 months in advance. Our full lifecycle services cover installation training, regular inspections, and remote O&M. With customer repeat purchase rates exceeding 85% for five consecutive years, we are a trustworthy long-term partner.