Brief Analysis of Truck-Mounted Crane Chassis and Crane Matching
1. Purpose and Advantages of Truck-Mounted Cranes
A truck-mounted crane, fully known as a "truck-mounted crane carrier," is essentially a standard cargo truck equipped with an integrated crane, enabling it to independently handle self-loading, unloading, and transportation of goods.
It is commonly used for lifting and transporting materials such as construction supplies, industrial equipment, structural components, and trees. It finds extensive applications in engineering construction, logistics transportation, municipal services, and emergency rescue operations.
Based on boom structure, it can be classified into straight boom cranes and knuckle boom cranes.
Straight boom cranes are suitable for relatively open working environments requiring high lifting heights and long distances, while knuckle boom cranes are ideal for confined spaces where close-range, heavy-duty lifting is needed.
2. Installation Space Requirements for Mainstream Cranes
The required installation space (dimension W as shown in the figure above)
for both straight boom and knuckle boom cranes is illustrated. The current market's mainstream crane models, their compatible chassis drive configurations, and the corresponding installation space requirements are summarized in the table below:
| Item | Crane form | Chassis drive form | Tonnage(T) | Installation space for crane(mm) |
| 1 | Straight boom crane | 4×2 | 5/6.3/8 | 800-860 |
| 2 | 6×4 | 8/10/12 | 1000-1300 | |
| 3 | 8×4 | 12/14/16 | 1300-1400 | |
| 4 | knuckle boom crane | 4×2 | 5/6.3/8 | 900-1100 |
| 5 | 6×4 | 8/10/12 | 1100-1200 | |
| 6 | 8×4 | 12/16/18/20 | 1300-1500 | |
| 7 | 22.5/28/30 | 1800-1900 |
3. Modeling of Crane and Cargo Bed Installation Positions
The installation positions of the truck-mounted crane and cargo bed are illustrated in the figure above.
The meanings of each dimension in the figure are as follows:
The cargo bed length can be calculated using the formula:
D = B (Wheelbase + Rear Overhang - A) + E - C
(Note: The C dimension must ensure no interference with the U-bolt fixation of the crane, which may vary significantly across different vehicle models.
The E dimension should be kept within 500mm.)