Double Girder Gantry Crane: Complete Buying Guide

1.What is a double girder gantry crane?

A double girder gantry crane is a large outdoor and factory-used heavy lifting equipment, belonging to the high-end main model of portal cranes. It adopts a double main beam frame structure as a whole, and its core components include double main beams, legs, end beams, lifting trolley, lifting mechanism, and a complete electrical control system. The equipment is set up on the ground track and can independently complete large-scale and heavy-tonnage material handling operations.

Compared with the single girder gantry crane, the double girder gantry crane has stronger structural rigidity, higher load-bearing capacity, more stable operation, and better resistance to deformation. It can be adapted to larger spans, higher lifting heights, and high-intensity continuous operations, making it the preferred lifting equipment for heavy industrial scenarios.

The double girder gantry crane produced by SEVENCRANE is certified with CE and ISO. The product quality is guaranteed, and it has a one-year warranty period. If any problems occur, our technicians will help customers repair. We can also mail spare parts to customers to ensure the normal operation of the customer’s factory.

2.Working principle

The operation actions of the double girder gantry crane are mainly divided into three parts, and the operation logic is simple. The first is the lifting action, which is completed by the lifting hoist or winch trolley for the vertical lifting of the goods. The second is the lateral movement of the trolley, where the lifting trolley moves left and right between the double main beams or above the main beams to achieve the lateral positioning of the materials. The last is the longitudinal movement of the entire machine, where the entire portal crane travels back and forth along the ground track, covering a large operation area.

The complete operation process can be freely combined, through three-dimensional movement, to accurately complete the lifting, relocation, loading, and stacking of goods, adapting to complex, continuous, and heavy-load industrial hoisting requirements.

3.Applicable scenarios

The double girder gantry crane is not a universal lightweight equipment. It is specifically adapted to high-strength, high-load, and high-condition scenarios. It is suitable for scenarios requiring large-tonnage heavy material lifting and also suitable for large-span sites and high-lifting-height operation environments. The equipment supports high-frequency and long-term continuous operation, and its stability and durability far exceed ordinary lightweight portal cranes.

This equipment is widely used in outdoor material yards, heavy industry workshops, steel markets, shipyards, prefabricated component factories, large logistics storage yards, and other industries. Projects with heavy loads, large spans, frequent operations, and high requirements for safety and stability are given priority to using double girder gantry cranes.

4.How to select the right model?

Model selection needs to be fully in line with the on-site conditions, avoiding insufficient parameters or excessive configuration. First, determine the rated load based on the maximum lifting weight and reserve a reasonable safety margin. Secondly, match the equipment span according to the width of the operation site, and determine the lifting height according to the lifting requirements of the materials.

Determine the working level based on the daily operation duration. Select the conventional level for intermittent light-load operations, and choose a higher-level working level for continuous heavy-load operations. At the same time, choose the control method as needed, including conventional ground handles, wireless remote control, and driver’s cab control, which can be customized. Outdoor use must also consider additional protective configurations such as wind resistance, rain protection, and lightning protection to ensure the safe operation of the equipment outdoors.

5.Configuration selection of the lifting mechanism

Heavy-duty double girder gantry cranes can be equipped with various lifting mechanisms, suitable for different tonnages and operation intensities. The conventional configuration includes wire rope electric hoists, suitable for medium and heavy loads, stable and uniform operation. The open-type hoist trolley has a stronger load-bearing capacity and is specifically designed for heavy-duty and high-strength industrial work conditions.

The market is mainly divided into standard configuration and European lightweight configuration. The European structure is compact, runs smoothly, has low noise, and has gentle start and stop, making it suitable for scenarios with high requirements for operation accuracy. Customers can match the most suitable lifting solution based on the lifting capacity, working level, and usage frequency.

6.Safety configuration

The Heavy Duty Double Girder Gantry Crane is equipped with upper and lower limit switches, overload protection, and emergency stop buttons to eliminate the risks of overloading and over-travel. The equipment is equipped with a travel limit switch for the trolley and a collision prevention device to prevent damage to the equipment during operation.

The outdoor model is specially equipped with wind-resistant clamping devices and anchoring devices to effectively withstand strong wind conditions. The complete electrical system has short-circuit, overload, and leakage protection functions. Multiple safety devices are linked to provide comprehensive safety protection for the equipment, materials, and personnel on site.

7.Price influencing factors

The Heavy Duty Double Girder Gantry Crane has no fixed price. The equipment price is completely determined by the working conditions parameters and configuration. The core influencing factors include rated lifting capacity, span, lifting height, working level, and main steel material usage. At the same time, the type of lifting mechanism, electrical brand, safety configuration, and outdoor protection level will directly change the cost.

In addition, track accessories, foundation requirements, transportation distance, on-site installation and commissioning services will be included in the overall project budget. Asking for the unit price cannot obtain an accurate quote. Complete working conditions parameters are the basis for precise pricing.

8.Equipment installation foundation requirements

The Heavy Duty Double Girder Gantry Crane has clear standards for the on-site foundation. The ground needs to be flat and solid to meet the equipment’s load-bearing requirements. The site needs to be equipped with dedicated crane tracks to ensure the smooth operation of the entire machine. On-site, a stable industrial power supply needs to be connected to meet the continuous operation of high-power equipment.

All equipment is completed with whole-machine debugging, load testing, and quality inspection before leaving the factory. After delivery, professional personnel will guide the assembly, wiring, commissioning, and trial operation to ensure the equipment can be stably put into production.

9.How to obtain a quote?

To obtain an accurate double girder gantry crane solution and quote, complete working condition information needs to be provided: rated load, equipment span, lifting height, working level, usage scenario, indoor/outdoor environment, power supply conditions, control method. Complete parameters can help engineers precisely match the structure, configuration, and safety solution, avoiding insufficient configuration or budget waste. We can recommend and customize solutions based on the customer’s actual working conditions.

If you need a customized solution and precise quote for the applicable working conditions, you can contact SEVENCRANE at any time.