Fully Automatic Warehouse Storage System with Gantry Loading Robot – Herochu Integrated Solution

The term “fully automatic” is often applied to systems that still require human intervention at key junctures—manual loading of the inbound station, manual strap cutting, or manual quality checks. The Herochu Fully Automatic Warehouse Storage System Integrated with Gantry Loading Robot eliminates these gaps. From the moment material arrives at the receiving dock to the moment it is retrieved for production, no human hand touches the profiles. This end-to-end automation is achieved through the seamless integration of mechanical hardware, sensor networks, and intelligent control software.

The system architecture consists of four primary components: a loading/unloading gantry system, profile material racks, material frames, and guide rails. Each component is designed not as an isolated machine but as a cooperating subsystem. The gantry robot serves as the central material transport mechanism, moving along the guide rails to access any position within the storage envelope. The profile material racks are the static storage structure, typically configured as a tower with 8 to 13 levels. The material frames are the removable or fixed supports that cradle specific profiles. Together, these components form a complete automated warehouse.

The gantry loading robot deserves special attention because it is the most dynamic element. Its structure is a bridge-type gantry fabricated from high-strength steel trusses. The truss design minimizes weight while maximizing stiffness—essential for positioning accuracy under varying loads. The robot travels on linear guide rails mounted to the floor or to elevated beams, depending on the warehouse configuration. Travel length can exceed 30 meters in large installations. All three axes (horizontal travel, vertical lift, and fork extension) are servo-controlled and synchronized to enable coordinated motion paths.

Load capacity of the gantry robot matches the rack system: either 3 tonnes or 5 tonnes per pick. The robot can handle single profiles or bundled profiles without reconfiguration. For single profiles, the forks use adjustable-width spacing to center the load. For bundles, the forks spread wider to support the full width. The transition between modes is automatic, triggered by the work order instruction. Vision cameras mounted on the gantry verify that the fork position matches the profile or bundle dimensions before engagement.

The fully automatic nature of the system extends to the inbound and outbound stations. Inbound material can arrive on roller conveyors, pallets, or even directly from an upstream cutting line. The system detects the arrival via photoelectric sensors, identifies the material via barcode or RFID tag, measures its dimensions via laser scanners, and records its weight via platform scales. Only after this verification does the gantry robot proceed to pick the material. Any discrepancy between expected and actual dimensions triggers an alarm and pauses the process until supervisor review.

Outbound operations are similarly automated. When a production order requests specific profiles, the system retrieves them and places them on the outbound station. From there, an automated guided vehicle (AGV) or conveyor system can take them to the next process. Alternatively, the system can directly feed a sawing or cutting line by placing profiles onto an infeed table. This direct integration eliminates the need for intermediate staging and reduces the time from storage to processing to seconds.

The profile material racks are built to withstand continuous operation. Main structures use steel profiles with minimum yield strength of 350 MPa. Each storage level is independently rated for 3 or 5 tonnes, and the rack columns are designed for a cumulative load of all levels simultaneously occupied at maximum capacity. This is a non-negotiable requirement: many storage systems derate when fully loaded, but the Herochu racks maintain full rating at every position. The number of rack layers is customizable from 8 to 13, and the overall height from 6015 mm to 6025 mm standard, with custom heights available.

Transmission mode across the gantry and the vertical lifting mechanism is chain drive. Chains are preferred over belts for their positive engagement and lack of slip. Each chain drive includes a tension monitoring system that alerts the PLC if tension falls below a preset threshold. The drive motors are AC servos with absolute encoders, eliminating the need for homing after power loss. Vertical lifting speed is 9 m/min, and horizontal inlet/outlet speed is 12 m/min. These speeds are conservative by design, prioritizing positional accuracy and load stability over raw speed.

Guide rails for the gantry system are precision-ground linear rails with a hardness of HRC 58-62 on the raceway surfaces. They are mounted on leveled steel beams with an alignment tolerance of ±0.5 mm over the entire length. Rail wipers prevent debris from entering the bearing blocks. For dusty environments, optional bellows covers can enclose the rails entirely. The gantry’s travel carriage uses four bearing blocks per rail, arranged to distribute loads evenly and provide redundancy if one block were to fail.

Integration with warehouse management software is a defining feature of the Herochu fully automatic system. The provided WMS module handles inventory tracking, slot optimization, and work order scheduling. It communicates via REST API or SQL database synchronization with higher-level ERP systems. For companies without an existing WMS, the Herochu system includes a standalone inventory management interface that can run on a local PC or server. This interface supports barcode printing, cycle counting reports, and historical transaction logs.

Real-world performance data from operational installations shows that the Herochu system achieves 99.7% inventory accuracy, meaning that fewer than 3 out of every 1,000 storage transactions result in location or quantity errors. The mean time to repair (MTTR) for the gantry robot is under 4 hours for most components, thanks to modular design and quick-disconnect cabling. The mean time between failures (MTBF) exceeds 8,000 hours of continuous operation.

Energy consumption is another consideration for fully automatic warehouses. The Herochu system uses regenerative drives on the vertical lifting axis, recovering energy when lowering heavy loads. This recovered energy is fed back to the common DC bus, reducing overall power draw by approximately 20% compared to systems without regeneration. Standby power consumption drops below 500 watts when the system is idle for more than 15 minutes, achieved by automatically powering down non-essential controllers.

For warehouses that have hesitated to adopt full automation due to complexity or cost, the Herochu Fully Automatic Warehouse Storage System Integrated with Gantry Loading Robot offers a proven, scalable path. The system arrives pre-assembled in modules, with factory testing of all components before shipment. On-site commissioning takes 2-3 weeks for a typical installation, including operator training. Support contracts provide remote diagnostics and 24-hour parts replacement. By removing manual handling entirely, the system not only reduces labor costs but also eliminates the primary source of material damage, inventory error, and workplace injury in profile storage operations.