Gantry cranes, also known as portal cranes, are primarily used for loading and unloading operations in outdoor yards, stockyards, and for bulk materials. The application of cranes significantly reduces handling hazards and labor costs while also accelerating work efficiency. As a professional manufacturer of single-girder and double-girder gantry cranes, the gantry cranes produced by our company have a metal structure similar to a door frame. A main beam in the middle is used for operational handling, with two supporting legs at both ends of the main beam providing support. At the bottom of these legs, there are two wheels that allow the crane to move directly on ground tracks. At both ends of the main beam, there are extendable cantilever arms. Gantry cranes come in a variety of classifications based on their use, structure, and appearance.

Gantry cranes can be classified into different types based on the door frame structure, main beam form, main beam structure, and usage. According to the door frame structure, they can be divided into gantry cranes and cantilever gantry cranes, with gantry cranes further divided into full gantry cranes and semi-gantry cranes, and cantilever gantry cranes into double cantilever and single cantilever gantry cranes.

Based on the main beam form, they can be categorized into single main beam gantry cranes and double main beam gantry cranes; by the main beam structure into truss beam, box beam, and honeycomb beam gantry cranes; and by usage into general gantry cranes, hydropower station gantry cranes, shipbuilding gantry cranes, and container gantry cranes.

In addition to the main structures, gantry cranes also have many detailed structures that are essential parts of the crane. Without any of these parts, the crane cannot operate.

Overload Protection Device

It is crucial to check whether the overload protection device is sensitive and reliable and meets design requirements, including the opening pressure of the hydraulic overload protection device; whether the comprehensive error of the alarm and power cut-off set point of mechanical, electronic, and integrated overload protectors meets the requirements.

Torque Limiter

The torque limiter is a safety device that prevents arm-type cranes from overturning due to overload. Its sensitivity and reliability should be checked through amplification or weighting methods, and whether the comprehensive error of the torque limiter's alarm and power cut-off set point is within the specified range.

Limit Position Limiter

Inspect whether the amplitude-changing mechanism, lifting mechanism, and running mechanism of lifting equipment can send an alarm signal and automatically cut off the power source running towards a dangerous direction when reaching a set position distance.

Windproof Device

For gantry cranes with a boom root hinge point higher than 50 meters, it is necessary to check the anemometer to ensure it accurately alarms when reaching the wind speed set point or working limit wind speed. For outdoor cranes operating on tracks, it is important to check the reliability of rail clamps, iron shoes, anchoring devices for deformation, damage, and their independent working reliability. For automatic rail clamps, inspect the reliability of the windproof device against sudden gusts and its coordination with the running brake of the crane to achieve windproof functionality in an unanchored state and the reliability of electrical interlock switch functions.

In summary, gantry cranes, essential for outdoor material handling, come in various forms and structures, each designed for specific operational needs. These cranes enhance safety, reduce labor costs, and improve efficiency. Our company specializes in producing both single and double girder gantry cranes with robust metal structures akin to door frames. Equipped with main beams for lifting, support legs for stability, and wheels for mobility, our cranes are tailored for diverse industrial applications. Additional structures like overload protection devices and torque limiters are integral to the crane's functionality and safety.

Elevate your material handling with XQTS's gantry cranes. Contact us now for customized lifting solutions that blend innovation with efficiency.