A Comprehensive Guide To Special Cranes: The Engineering Wonders From Truck-mounted Cranes To Spider Cranes

In the fields of urban construction and industry, cranes come in various forms to meet the demands of different scenarios.

i. Truck-mounted crane: A mobile hoisting expert

It perfectly combines the mobility of the truck and the lifting function. The hydraulic boom installed on the truck chassis is particularly suitable for operation scenarios that require rapid relocation. Participate in the installation of utility poles and the hoisting of small equipment in the city.

The core technology lies in its folding arm design. In the transportation state, the arm length can be retracted to within 3 meters, which greatly improves the road passability. The intelligent load limiting system can automatically calculate the stability of the outriggers to ensure operational safety. The current mainstream models have a lifting capacity ranging from 1 to 244 tons, which is sufficient to meet the demands of most urban engineering projects.

Ii. Marine Cranes: Steel Booms That Conquer the Ocean

The unstable sea surface requires that the equipment must be equipped with a dynamic compensation system. This system can counteract the ship's roll in real time, with a compensation accuracy of ±0.5°, ensuring the stability of the hoisting operation.

Considering the corrosiveness of the Marine environment, Marine cranes are made of 316L stainless steel with a special ceramic coating, which can resist salt spray corrosion for 8,000 hours. This type of crane is mainly used for loading and unloading cargo at ports and maintaining equipment on offshore platforms, and it is an indispensable and important piece of equipment in Marine engineering.

Iii. Flying Boom Crane: A Master of Flexible and versatile joints

It is named for its multi-segment articulated arm structure and is as flexible as a mechanical finger. Compared with traditional straight boom cranes, its greatest advantage lies in its ability to bypass obstacles for operation, with a positioning accuracy of ±1cm, making it particularly suitable for working in complex environments.

The lifting capacity of a flying boom crane is relatively small, and its working radius is also short. It is most suitable for use in situations where space is limited but precise positioning is required, such as the installation of factory equipment and the maintenance of municipal facilities.

Iv. Aerial Work Platform: A safe working platform in the air

Its appearance is similar to that of a crane, but its functional positioning is completely different. The core function is to provide a stable platform for carrying people to work, rather than for hoisting goods. Modern aerial work platforms are equipped with multiple safety devices, including anti-overturning sensors and emergency descent systems.

The anti-overturning sensor can monitor the levelness of the platform in real time. Once an abnormality is detected, it will immediately alarm and lock the operation. Even in the event of a power outage, the emergency descent system can ensure the safe return of workers to the ground through manual operation. These designs make aerial work platforms the preferred equipment for operations such as building maintenance and exterior wall cleaning.

V. Spider Hoist: The expert in Hoisting in Confined Spaces

The retractable outrigger system is as flexible as a spider's legs. This design enables it to adapt to extremely narrow Spaces such as stairs and elevators, with a minimum working distance of only 50cm, which is beyond the reach of traditional cranes.

In the field of ancient building restoration, spider cranes have played a significant role. For instance, when the Hall of Supreme Harmony in the Forbidden City was under maintenance, it relied on spiders to hoist within a limited space to complete the transportation of materials and the installation of equipment. Modern spider cranes mostly adopt remote control operation, further enhancing the convenience of operation in confined Spaces.

When choosing a crane, you can refer to a simple formula: Space limitation index = (working radius × height) ÷ Equipment floor area. When this value is greater than 5, spider hoists are often the best choice. In recent years, with the increasing demand for urban renewal, the global spider hoist market has maintained an annual growth rate of 17%.

Which type of crane is your favorite product? Welcome to share your reasons!