Truck-mounted cranes are categorized based on the number of axles, such as two-axle, three-axle, four-axle, and so forth. For the same number of axles, the wheelbase can vary, either being larger or smaller. So, what exactly are the implications of the wheelbase on the performance of truck-mounted cranes? Specialists in truck-mounted cranes inform us that the wheelbase of a truck-mounted crane is intricately linked to the performance of the entire vehicle, as the wheelbase determines the position of the center of gravity of the truck-mounted crane. Consequently, if the wheelbase of the truck-mounted crane undergoes a change, the entire vehicle configuration must be reorganized, particularly the dimensions of the transmission system and the body. The parameters of the springs and shock absorbers within the suspension system need to be recalibrated, the size of the trapezoidal tie rods in the steering system needs adjustment, and simultaneously, a change in the wheelbase will also cause alterations in the distribution of axle loads on the front and rear axles.
The most immediate impact of the wheelbase on the truck-mounted crane is the length of the vehicle body, which further influences the interior space. For instance, the wheelbase of a blue-plate truck-mounted crane is typically around 3300mm. Due to this relatively shorter wheelbase, the space in its rear seat is relatively confined. In contrast, the wheelbase of a yellow-plate truck-mounted crane is generally above 4000mm. With this longer wheelbase, the space in its rear seat is significantly more generous. Therefore, the wheelbase plays a decisive role in determining the length, available space, and comfort level within the vehicle body.
The wheelbase also has a considerable bearing on the passability and stability of the truck-mounted crane. A truck-mounted crane with a short wheelbase benefits from a shorter overall length, lighter mass, smaller turning radius, and passage radius. This enables it to navigate through relatively narrow sections with greater ease. However, the drawback of an overly short wheelbase is that it compromises the vehicle’s maneuverability and stability. On the other hand, a truck-mounted crane with a large wheelbase has a longer overall length and greater mass. Its center of gravity is located farther from the support points, resulting in relatively stable driving and a reduced likelihood of rollover incidents. Nevertheless, such a configuration comes with a larger turning radius, a larger reversing blind area at the rear, increasing the risk of accidents, and making it less suitable for narrow road conditions.
The size of the wheelbase also has an impact on the installation of the crane on the truck-mounted crane, which is particularly evident in double-steering axle truck-mounted cranes. For example, in the case of small three-axle and front-four-rear-eight truck-mounted cranes, when installing the crane on these two types of vehicles, the outrigger component of the crane must be positioned between the two steering axles. If the wheelbase between the steering axles is excessively short, it becomes impossible to lower the outriggers, especially for large-tonnage cranes, which are typically rear-mounted.
The wheelbase is a critical factor that affects multiple aspects of the truck-mounted crane‘s performance. It influences the vehicle’s handling, stability, interior space, and the installation of the crane itself. A well-chosen wheelbase can optimize the truck-mounted crane‘s capabilities to suit specific operational requirements and working conditions. When purchasing a truck-mounted crane, potential buyers must carefully consider the wheelbase in relation to the intended use of the vehicle. If the truck-mounted crane is primarily intended for operations in confined spaces or areas with narrow roads, a shorter wheelbase might be more appropriate to ensure maneuverability. However, if stability and a larger working platform are priorities, a longer wheelbase could be the better choice.
The decision regarding the wheelbase should also take into account factors such as the weight and size of the loads to be lifted, the frequency and nature of the lifting operations, and the terrain and road conditions in which the vehicle will be operating. A comprehensive assessment of these factors can lead to a more informed choice of wheelbase, thereby maximizing the efficiency and safety of the truck-mounted crane in its intended application.
In conclusion, the wheelbase is not just a simple specification but a key determinant of the overall performance and functionality of the truck-mounted crane. Paying close attention to this aspect during the purchasing process is essential to ensure that the vehicle meets the operational needs and expectations of the user.
