Large Industrial Sliding Doors, Crane Doors

Large industrial doors, specifically crane doors, serve a special purpose in industrial halls where the crane track extends outside the hall, such as in outdoor loading or manufacturing areas. In these locations, a conventional door closure is insufficient: the challenge lies in how to weatherproof the open gap above the crane track while ensuring the uninterrupted movement and safe operation of the lifting equipment, whether indoors or outdoors.

The solution lies in specially designed crane doors, which, due to their unique design, allow coordinated operation with the crane control systems. One of the key elements of the system is the intelligent control unit, which can intervene in the crane’s control system when necessary. This is crucial to prevent potential collisions with the moving crane when opening or closing the door.

In the closed position, the safety is ensured by optical collision prevention systems placed on both the internal and external sides, which detect if the crane approaches the closed door too closely and automatically stop or alert the operator if necessary. Additionally, special sensors are installed on the crane track to monitor whether the crane has already passed the door line – this prevents the door from closing randomly while the crane is still passing through.

The crane door can be designed with two types of movement:

Upward opening design, or
Sideways tilting door panels with fixed hinges.

In both cases, the movement is powered by high-capacity lifting systems with double brakes, which are always equipped with a fall-prevention safety system to prevent the door from suddenly falling or being lowered too quickly in case of malfunction.

Large industrial doors often provide additional security and fire protection functions, so integrating them with the fire protection system is essential during the design phase. In such cases, it must be ensured that the door automatically activates in case of fire or smoke. Additionally, it is important that the doors remain operable in case of a power outage – for this, an uninterruptible power supply (UPS) or manual operation mechanism is required.

Custom-sized doors tailored to the crane track structure cover especially large spans and heights, offering excellent solutions for:

Steel structure manufacturing plants
Logistics halls
Shipyards
Vehicle manufacturers, or
Any industrial facility where coordinated operation of outdoor and indoor crane tracks is required.

Frequently Asked Questions

What makes crane doors different from standard industrial doors?
Crane doors are specifically designed for facilities where crane tracks extend outdoors, allowing seamless indoor-outdoor crane movement. They feature specialized controls and safety systems to coordinate with crane operations and ensure uninterrupted, safe movement of equipment.

How do crane doors ensure safety during crane movement?
These doors use optical collision detection systems on both the inside and outside. They automatically stop or alert the crane operator if the crane gets too close while the door is closed. Additionally, track sensors monitor whether the crane has already passed the door line to prevent premature closure.

What movement types are available for crane doors?
Crane doors can be designed in two main configurations:

Upward-opening models
Side-tilting door panels with fixed hinges

Both options use high-capacity lifting mechanisms with dual brakes and fall-prevention safety systems.

Can the crane door be integrated with the crane’s control system?
Yes. The crane doors include an intelligent control unit that can intervene in crane operation if needed, preventing unsafe interactions between the door and the moving crane.

What happens in case of a power outage?
The doors can be equipped with manual operation systems or an uninterruptible power supply (UPS) to maintain functionality during outages, ensuring safe and continuous access.

Can the doors be integrated with fire safety systems?
Absolutely. GD crane doors can be fully integrated into the building’s fire protection system. In case of fire or smoke detection, the doors can be set to automatically activate to protect personnel and property.

What sizes and spans can GD crane doors cover?
Each crane door is custom-designed to fit the facility’s structural and operational needs, covering especially large widths and heights, depending on the crane track design and clearance requirements.

What are the typical applications of these doors?
Crane doors are ideal for: