Recently, a 60-kilometer-long, 350-millimeter-diameter three-core submarine cable steadily landed on the cable-laying ship, which marked the successful loading of the world's first and the longest in its original length three-core submarine cable with the highest voltage level by GENMA's dual-purpose gantry crane for hoisting and loading. It provided strong assistance for the construction of Guangdong Power Yangjiang Qingzhou No. 1 and No. 2 offshore wind farm projects.

      The dual-purpose gantry crane for hoisting and loading (hereinafter referred to as: dual-purpose gantry crane) is a multi-functional device developed and customized by Nantong Rainbow Heavy Machineries Co., Ltd. (hereinafter referred to as: Rainbow Heavy Machineries) for Ningbo Orient Wires & Cables Co., Ltd. Practical and efficient, it can load finished cable and hoist sundries at the same time with powerful functions and convenient operation. There is currently no second such equipment in China.

      According to customer needs, GENMA's dual-purpose gantry crane is designed with two working modes: hoisting and loading. In addition to loading cables 50 to 350 millimeters in diameter, the device can also be used as a conventional single-boom gantry crane, realizing multi-function.

      In order to integrate two functions into one machine, streamline the appearance and reduce the weight, GENMA's product designers have innovatively designed the layout on the premise of fully considering the reasonableness of equipment structure to achieve a perfect combination of the key equipment of the cable conveyor and crane.

• Flexible and mobile, high efficiency in loading

      Compared to its creative appearance, the "core" of the GENMA dual-purpose gantry crane is more worthy of recognition.
      In terms of operational flexibility, the GENMA dual-purpose gantry crane is equipped with a rotatable hoisting boom and has four coordinated working mechanisms for hoisting, slewing, amplitude changing and running. When loading, there is no need to move the ship on site. The GENMA dual-purpose gantry crane can smoothly transfer the cable onto the ship through a slewing and arm extension action, in conjunction with a series of cable conveyors such as a bridge, cable guide frame, tractor, boom and so on.

      At the same time, according to actual usage requirements, operators can choose the appropriate transfer speed for cable transfer and flexibly adjust the efficiency of cable loading.

      Through actual use, Manager Shi, the person in charge of equipment operation at the customer's wharf, is very satisfied with the use of the GENMA dual-purpose gantry crane. "The operation is convenient. All we need to do is to adjust the direction of the arm and then level the arm to easily start loading. During operation, the various mechanisms respond flexibly and operate smoothly, improving the efficiency of on-site operations."

• Attention to detail, high quality in loading

      In addition to functionality and operability, the details of the GENMA dual-purpose gantry crane are also worth mentioning.

      In order to improve the quality of cable transfer, the GENMA dual-purpose gantry crane is equipped with a cable protection device. Through the special design of the cable transfer track, the resistance of cable moving has been effectively reduced and the bending and deformation of the cable during transfer have been avoided. "GENMA's product design is considerate. The appearance of the submarine cable transferred onto the ship this time is intact and undamaged. GENMA's designers are very professional and their products are very detail-oriented."

• One machine for multiple uses, loading and hoisting at the same time

      Under normal circumstances, submarine cables, due to their large length and weight, require a professional cable conveyor when loading, together with their supporting equipment, thus, cable companies' wharves often need to be equipped with two devices, one cable conveyor and one crane, with two drivers coordinating operations.

      "On our old wharf, we had to use two separate devices to load cables and accessories," recalled Manager Shi, "but now we don't need to. The GENMA dual-purpose gantry crane is two-in-one. When hoisting, we can use it directly to hoist the supporting equipment for submarine cables and other sundries to meet the daily operational needs of the site. The GENMA dual-purpose gantry crane is really practical!"

      It is understood that since the equipment was delivered in May 2022, the GENMA dual-purpose gantry crane has hoisted a total of hundreds of sundries. As the equipment runs smoothly and accurately when hoisting, the clients are greatly satisfied with its usage.

      Over the years, Rainbow Heavy Machineries has been driven by customer needs to promote product innovation and has continued to deepen its business in hoisting equipment, bulk material handling equipment and marine engineering equipment. After years of technical accumulation, its independent brand GENMA has won widespread praise from industry customers for its rich innovative technologies and product portfolio.

      Creating value for customers is a strong driving force for the development of Rainbow Heavy Machineries. In the future, Rainbow Heavy Machineries will continue to uphold its corporate mission of "adhering to innovative technology and creating value for customers" and provide customers with professional and innovative industry solutions.