In modern steel manufacturing, metal processing and bulk raw-material warehouses, a conventional single-trolley overhead crane cannot always cover every lifting task. Scattered small goods need frequent individual transfers, while bundled steel coils, extra-long plates and large workpieces require stable, balanced lifting. Henan Mine’s double trolley overhead crane solves both needs with two independently operable trolleys mounted on one main beam.
With independent operation and synchronized combined hoisting, this heavy-duty overhead crane gives steel mills and metal-processing plants more flexibility, higher handling capacity and better control of load stability.
What Is a Double Trolley Overhead Crane?
A double trolley overhead crane is a customizable double-girder bridge crane with two complete lifting trolleys on the same box-type main beam. Each trolley has its own hoisting, travelling and cross-travel mechanisms, so the equipment can adapt to both light, scattered loads and large, concentrated loads.
Independent operation mode
The two trolleys travel and lift separately without interfering with each other. In practical terms, one bridge crane can perform two independent handling tasks, similar to two single-trolley overhead travelling cranes operating in the same workshop.
Synchronous combined hoisting mode
An intelligent synchronization system coordinates hoisting, bridge travelling and trolley traversing. The two trolleys share the load evenly and move together, which helps prevent shifting, tilting and uneven stress when lifting bundled coils, long plates or large assemblies.
The crane can reach A6-A7 heavy-duty working class for metallurgical applications. Its structure and electrical system are optimized for frequent starts and stops, continuous operation, high temperature and dusty workshop conditions. C-hooks, coil tongs, lifting beams and electromagnetic chucks can be selected for the job.
Core Application Scenarios
- Hot-rolling and cold-rolling workshops: Lift bundled coils, large-diameter coils and long strips in synchronous mode, or transfer single coils, raw materials and accessories independently. Even load distribution helps reduce coil deformation, inner-ring extrusion and surface scratches.
- Finished-steel storage yards: Stack and destack coils, plates and profiles, then switch between small-batch delivery and large-batch centralized shipment as the production schedule changes.
- Heavy-machinery and metallurgical processing plants: Lift ultra-long workpieces, large cast blooms and assembled structural components with balanced support to reduce bending and deformation caused by single-point stress.
Henan Mine red QE double-girder double-trolley bridge crane, 160 t (80 t + 80 t) rated lifting capacity.
QE type 160 t double trolley overhead crane.
Outstanding Advantages of Henan Mine Double-Trolley Cranes
1. Two operating modes for maximum flexibility
During off-peak shipping periods, the trolleys can run independently to handle scattered coils, spare parts and auxiliary materials, increasing daily handling volume. During peak periods, both trolleys work in tandem to lift bundled coils and extra-long plates. Coordinated movement keeps the load stable without shifting or tilting.
2. Robust structure for harsh metallurgical conditions
The main beam uses a thickened box-welded structure with high rigidity and impact resistance, suitable for repeated heavy-load starts and stops. Core load-bearing parts, including the main shaft and wheel hub, can use 42CrMo alloy steel for wear resistance, durability and long service life. High-temperature coatings and anti-corrosion treatment are available for hot workshops and humid coastal environments.
Workshop installation real scene.
3. Specialized attachments protect the load
Henan Mine can match C-hooks, steel coil tongs, lifting beams or electromagnetic chucks to the material and lifting method. Proper attachment selection improves grip, keeps the coil surface and inner bore intact, and makes synchronized lifting of long or bundled loads more predictable.
QE double trolley crane with double hooks.
4. Global installation and after-sales support
For overseas customers, Henan Mine supplies English technical manuals, operation guides and spare-parts lists. Professional engineers can be dispatched for installation guidance, commissioning and operator training. The complete machine includes a one-year warranty, lifelong technical support and long-term spare-parts supply, with online inquiry responses available around the clock.
Double Trolley Overhead Crane Technical Parameters
| Parameter Item | Standard Specification | Customizable Range |
|---|---|---|
| Combined rated load | 10 t (5 t + 5 t) / 20 t (10 t + 10 t) / 32 t (16 t + 16 t) | 5-200 t dual-trolley matching |
| Span | 13.5 m / 16.5 m / 22.5 m | 10.5-35 m |
| Working class | A6 / A7 | A3-A7 optional |
| Lifting height | 9 m / 12 m | 6-18 m |
| Control mode | Cabin control | Remote control or dual control |
| Protection grade | IP54 | IP55 upgrade available |
| Optional attachments | C-hook, steel coil tong, lifting beam, electromagnetic chuck | Special hoist tools on request |
Get a Customized Double Trolley Overhead Crane
When selecting a double trolley overhead crane, share the lifting load, coil or workpiece dimensions, span, lifting height, duty cycle, workshop temperature and control preference. Henan Mine’s engineers can recommend the right trolley combination, lifting attachment and protection configuration, then provide an accurate quotation and production schedule.
Contact: Chloe
Tel: +86 18238799707 (same number for WhatsApp)
Email: sales07@minehenancranes.com
FAQs
Can the two trolleys operate completely separately?
Yes. Both trolleys have independent lifting and travelling mechanisms. When synchronous mode is turned off, they can run separately like two single-trolley overhead travelling cranes, which is suitable for scattered, small-batch coil transfers.
Is this equipment suitable for long-term steel coil lifting?
Yes. The A6/A7 heavy-duty metallurgical design is optimized for frequent stacking and turnover of steel coils. With suitable coil tongs, C-hooks or lifting beams, the crane can keep the coil surface and inner bore protected during repeated handling.
What is the delivery cycle for customized models?
Standard double-trolley overhead cranes generally require 60-85 working days. For special spans, capacities, high-temperature or anti-corrosion configurations, the exact schedule is confirmed after the technical agreement is signed, with regular production updates.