According to the structural form, it can be divided into: straight arm type and folding arm type.

The structures are different. The straight-arm type boom uses a multi-stage telescopic boom. When fully retracted, the boom is located at the upper part of the carriage. The folding-arm type boom uses two sets of folding arms, one of which is used to fold the boom. , the other group is multi-level scaling. Here we have compiled the following differences, you will understand after reading them.

1. Installation space when driving. For a straight-arm crane, the boom is placed on the upper part of the carriage, occupying the space in the carriage. The folding arm type, when fully retracted, is concentrated between the carriage and the front of the car, so it does not take up space in the carriage.
2. The methods of lifting goods are different. The straight-arm type generally uses a winch to lift the goods, while the folding-arm type generally does not have a winch and uses a lifting arm to lift the goods.
3. The price of the folding-arm truck-mounted crane is higher than that of the telescopic arm. The structure of the folding-arm truck-mounted crane is relatively complex, requires high precision, and the manufacturing cost is relatively high. The structure of the telescopic arm is relatively simple, and the manufacturing accuracy requirements are relatively low. Overall The cost is relatively low.
4. The telescopic arm truck-mounted crane has a wider working radius. With the same arm length, the telescopic arm truck-mounted crane can expand the working depth by lengthening the wire rope, while the folding arm truck-mounted crane cannot easily complete tasks that require deeper depth. .
5. The telescopic arm is easier to control vertical take-off and landing. The telescopic arm uses a lifting mechanism with a retractable steel wire, which can strictly control the lifting and landing of hanging objects; while the folding arm uses a hydraulic cylinder to complete actions similar to that of a manipulator, which is more difficult to operate. .
6. The telescopic arm is easier to install on the vehicle chassis: the telescopic arm is relatively loose in structure, which is conducive to the dispersion of the vehicle load, and the center of gravity is far away from the installation position, especially when lifting heavy objects, it is more conducive to dispersing the axle load of the chassis . As for the knuckle-arm truck-mounted crane, whether it is mid-mounted or rear-mounted, due to its relatively centralized structure, the center of gravity is easily concentrated on a certain axis of the chassis, which often produces a larger load on a certain bridge, which is not conducive to the installation of the entire vehicle.
7. The folding arm is more suitable for narrow working environments. This is determined by its structure. The folding arm truck crane is more suitable for relatively narrow working environments such as factory warehouses, while the telescopic arm requires a larger space for display due to its structure.
8. The folding-arm truck-mounted crane works more efficiently. Because the folding-arm truck-mounted crane uses multiple hydraulic cylinders to form a joint-like boom connection mechanism, it can complete the action faster and work more efficiently. The telescopic arm truck-mounted crane uses a lifting mechanism that retracts and releases the wire rope. The drum rotates forward to retract the rope, the hook rises, and the reverse rotation to release the rope and the hook descends. Its working efficiency is relatively low.
9. The folding arm can be equipped with various auxiliary tools: the folding arm truck-mounted crane uses a hydraulic cylinder device to form a device similar to an articulated arm manipulator. It can be equipped with work buckets, clamps, hanging baskets, plate forks, various grabbers, Auxiliary tools such as augers, tire manipulators and pile pullers. Since the front end of the telescopic arm is a soft wire rope, it is rare to see the telescopic arm equipped with auxiliary equipment.
10. The folding arm takes up less space in the entire vehicle, and the space occupied is clear at a glance. The folding-arm truck-mounted crane shrinks the entire boom together when transporting goods, occupying a relatively smaller space, while the telescopic-arm truck-mounted crane’s arm can only be placed horizontally, and the vehicle occupies a larger space when driving.