Enhancing Logistics Efficiency with a 35T Double Girder Overhead Crane in a Regional Distribution Center

Client & Challenge
A leading manufacturer of automotive parts was constructing a new, high-bay regional distribution warehouse. Their primary challenge was integrating a primary material handling system capable of safely and efficiently moving heavy loads of packed components, industrial machinery for in-house maintenance, and standardized heavy-duty storage racks. The requirements were specific: a robust lifting solution for Warehouse Construction that could operate within the building’s finished interior dimensions, handle frequent lifts at or near its maximum capacity, and ensure long-term reliability with minimal maintenance disruption.

Solution: A Customized Indoor Overhead Crane System
After a detailed analysis of the workflow, floor plan, and structural blueprints, Dongqi Crane proposed and supplied a customized Indoor Overhead Crane system. The core of the solution was a 35 Ton Capacity, Double Girder EOT (Electric Overhead Travelling) crane, spanning 28 meters to cover the entire width of the storage and staging area.

Technical Focus: Indoor-Adaptive Design of the Double Girder Crane
The selection of a Double Girder Design was critical to meeting the indoor operational demands. Here is a technical breakdown of its key adaptive features:

1. Optimized Hook Approach & Low Headroom Design: The double girder configuration allows the hoist trolley to be mounted between the two main beams, rather than under a single beam. This significantly reduces the minimum required distance from the crane rail to the hook (headroom). For the client, this meant maximizing the available lifting height under the ceiling—a crucial factor for stacking tall racks and handling bulky items in a confined indoor space.
2. Enhanced Stability for Precision Handling: The twin-girder structure provides an inherently more rigid and stable load path compared to single-girder designs. When moving a full 35-ton load across the bay, crane deflection is minimized. This stability is essential for Material Handling Efficiency indoors, as it allows for more precise load positioning, reduces load sway, and enables safer spotting of goods onto storage racks or trucks, directly speeding up operations and enhancing safety.
3. Durability for Intensive Duty Cycles: Warehouse operations often involve repeated, frequent lifting cycles. The double girder framework is engineered to withstand higher duty classes (e.g., A5 or A6). Its robust construction better handles the dynamic stresses of frequent starts, stops, and long-term use, leading to reduced structural fatigue and lower long-term maintenance costs—a key consideration for a capital investment in Warehouse Construction.
4. Integrated Trolley & Cleaner Aesthetic: The main hoist and trolley assembly is seated on top of the double girders, creating a more integrated and compact system. This not only contributes to the low headroom but also results in a cleaner visual profile. Furthermore, critical components are less exposed to accidental contact, aligning with a tidy and organized indoor industrial environment.
5. Closed Cabin & Smooth Operation: The crane was equipped with a fully enclosed, dust-resistant operator cabin (with the option for remote floor control). Coupled with variable frequency drives (VFDs) on all motions—hoist, trolley, and bridge travel—the system ensures exceptionally smooth acceleration and deceleration. This minimizes load swing and drastically reduces operational noise, which is a vital factor for the comfort and communication of personnel working inside the warehouse.

Result & Impact
The installation of the 35-ton double girder crane became the backbone of the warehouse’s internal logistics. It seamlessly handles the planned heavy lifts, from organizing the storage layout during setup to daily handling of production pallets. The design’s focus on stability and precision has directly translated into faster turnaround times for loading/unloading and safer, more predictable material movement. The client reports a significant improvement in operational flow and confidence in the equipment’s capacity to meet both current and future Material Handling Efficiency goals.

For Your Project
If your Warehouse Construction or retrofit project involves demanding indoor material handling, the engineering principles behind this Double Girder Design for Indoor Overhead Cranes are worth careful consideration. A 35 Ton Capacity crane of this type is not merely about lifting weight; it is about providing the structural integrity, operational precision, and long-term reliability required for a high-productivity industrial space.