Automated heavy duty pallet storage

Stop treating your 6-ton stamping dies like standard pallets. In heavy manufacturing, floor stacking leads to the “honeycombing effect”—wasting 40% of your footprint—and exposes your workforce to lethal risks during 45-minute forklift retrieval cycles. We engineer high-density structural solutions that handle 8,000kg loads with millimeter precision, turning a dangerous flat warehouse into a streamlined vertical asset. Talk With An Expert

The Physics of Heavy Lifting: Why Standard Racking Fails

In the automotive stamping and heavy machinery sectors, the primary challenge isn’t just weight; it is the combination of extreme load concentration and dynamic forces. When a forklift operator attempts to place a 5-ton injection mold onto a standard rack beam at a height of 6 meters, the margin for error is non-existent. Traditional welded racking lacks the dynamic rigidity required to handle the momentum of these loads, often resulting in structural fatigue or, in worst-case scenarios, collapse.

To solve this, we deploy the Automated Pallet Warehouse specifically configured for heavy duties (starack-Heavy). Unlike standard systems, this solution utilizes a Double Mast Stacker Crane structure. We utilize Q355 high-strength steel assembled via a fully bolted structure (using high-grade tension control bolts) rather than site welding. This engineering choice is deliberate: bolted connections provide superior resistance to the vibration fatigue caused by the constant lifting and lowering of loads ranging from 3,000kg to 8,000kg.

Eliminating the “Honeycombing” of Floor Storage

A common pain point in steel coil and die processing facilities is the “Honeycombing Effect.” You might have a 10,000 square meter facility, but because heavy items are often stacked on the floor (block stacking), accessing a specific die buried three rows deep requires moving the front items first. This results in a massive waste of operational time—often taking up to 45 minutes to retrieve a single tool for the press line.

By implementing a Heavy duty ASRS, we convert this inefficient horizontal sprawl into vertical density. The system allows for direct selectivity of any unit load, regardless of its weight. The stacker crane moves simultaneously in the X (travel) and Y (lift) axes, utilizing an S-Curve acceleration profile. This ensures that even with a multi-ton payload, the movement is smooth enough to prevent load shifting, yet fast enough to reduce retrieval time from 45 minutes to under 5 minutes.

Integration with the Manufacturing Line

The true value of automation in heavy industry is realized when the storage system acts as a direct extension of the production line. In a Rack Clad building configuration, the racking itself supports the roof and walls, maximizing the use of industrial land. Inside, the system communicates directly with your MES (Manufacturing Execution System).

For example, in an automotive plant, when the production schedule calls for “Fender Mold B,” the WMS automatically dispatches the stacker crane. The crane retrieves the heavy die and deposits it onto an AGV interface or a heavy-duty conveyor that feeds directly into the stamping press line. This creates a “Line-side Supply” model that removes manual forklifts from the equation entirely, dramatically lowering the risk of workplace accidents associated with heavy material handling.

To handle these forces, the bottom rail (shown above) and drive units are engineered to absorb the braking energy of the heavy crane. The system features regenerative braking, feeding energy back into the grid as the heavy load is lowered, which is a significant factor in reducing the OpEx of moving massive weights repeatedly.

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Perguntas Frequentes

1. What is the maximum weight capacity per pallet for your heavy-duty ASRS?

Our starack-Heavy series is engineered to handle extreme loads. While standard systems cap at 1,500kg, our heavy-duty configuration utilizes reinforced double-mast stacker cranes and specialized forks to manage unit loads between 3,000kg and 8,000kg, making it ideal for stamping dies, steel coils, and engine blocks.

2. Can the system handle irregular shapes, like molds or cylinder blocks?

Yes. Unlike standard pallet warehousing, heavy industry often requires custom load bases. We design specific steel pallets or “slave pallets” that interface securely with the irregular footprint of your molds or machinery parts, ensuring they sit stable on the rack and the telescopic forks during transport.

3. How does the system prevent the crane from tipping with a 6-ton load at 20 meters high?

Stability is achieved through a combination of the Double Mast structure and a rigorous “Top Guide Rail” system. The crane is mechanically locked between the floor rail and the roof rail. Furthermore, we use Q355 high-strength steel and anti-deflection algorithms in the PLC control to compensate for any mast bending dynamics in real-time.

4. Do we need a special foundation for this type of warehouse?

Absolutely. Due to the high point loads transferred by the rack columns (often exceeding 20-30 tons per footplate in high-bay configurations), a reinforced slab with deep anchoring is required. Our engineering team provides the specific static load calculations to your civil contractors to ensure the slab meets the necessary PSI and flatness requirements.

5. Is it possible to integrate this with our existing overhead bridge cranes?

Yes. A common interface point is the “Handover Zone.” The Automated Pallet Warehouse retrieves the heavy load and places it on a cantilevered output station. From there, your existing overhead crane (or an AGV) can pick up the load for final placement into the machine tool or press.