Small Straight Boom Crane: An Efficient Lifting Solution for Compact Spaces

2025-07-16

The small straight boom crane, characterized by its "lightweight, flexible, and precise" nature, complements large marine cranes and offshore cranesin light lifting scenarios. With a rated lifting capacity typically ranging from 1 to 10 tons and a fully extended main boom length of 3 to 15 meters, it stands out for its compact structural design and user-friendly operation. It is an ideal choice for small vessels, special vehicles, and operations in narrow spaces. Compared to knuckle Boom Cranes of the same specification, it has advantages in linear lifting and rapid response.

Core Design: A Balanced Blend of Small Size and Excellent Performance

1. Lightweight Structure and Flexible Deployment

The small straight boom crane features a high-strength aluminum alloy or low-carbon steel boom, which is 30% lighter than traditional steel. Its overall weight can be controlled between 500 and 2000 kg, making it suitable for small vessels under 50 tons (such as workboats and patrol boats) and mobile platforms like pickup trucks and vans. For example, the 3-ton model can be directly installed on the deck of a yacht, Fixed to the hull with bolts without additional reinforcement, having minimal impact on the carrier's load-bearing capacity.

Its single-section or two-section telescopic boom design simplifies the operation process. The main boom can extend and retract in just 10-20 seconds. Combined with the 360° full-slewing function (some models have a 180° half-slewing function), it can still perform precise lifting in narrow docks or cabins with a width of less than 5 meters, offering greater flexibility than deck cranes of the same tonnage.

2. Scenario-Specific Protection and Power Adaptation

The equipment offers multiple customization options for different operating environments:

Marine version: Adopts anti-salt spray coating (with a salt spray resistance test reaching 3000 hours) and waterproof electrical components (with a protection level of IP67). It is suitable for lifting fishing gear on small fishing boats, transferring equipment on inland patrol boats, and collaborating with auxiliary marine cranes to complete material supply.

Land version: Equipped with a wear-resistant tire chassis (mobile type) or a fixed base (fixed type), it is suitable for lifting light goods in warehouses and workshops. Its noise is controlled below 75dB, meeting the environmental protection standards for indoor operations.

In terms of power, it can choose hydraulic drive (adapting to the hydraulic system of ships or vehicles) or electric drive (220V/380V power supply). Some portable models support battery power supply, enabling cordless operation to meet the needs of outdoor emergency lifting.

Compatible Accessories and Value-Added Functions

To expand application scenarios, the equipment can be equipped with special accessories:

Foldable hanging cage: Carries 1-2 maintenance personnel to a height of 3-8 meters, used for ship mast maintenance and billboard installation, replacing part of the functions of aerial work vehicles.

Magnetic chuck: Adsorbs magnetic goods such as steel plates and steel pipes, improving the transportation efficiency in machine processing workshops.

Telescopic sling: Adapts to irregularly shaped goods (such as plastic barrels and fabric bags), avoiding tilting by adjusting the distance between lifting points.

High-end models can also integrate load moment limiters and overload alarm functions. When the load exceeds 10% of the rated value, the power is automatically cut off to ensure operation safety. This design enables it to meet industrial-grade safety standards among small cranes.

Whether it is for the daily operation and maintenance of small vessels or light lifting in land scenarios, the small straight boom crane, with its "small but excellent" characteristics, has become an indispensable supplement to the lifting equipment family. Its functional stratification with large marine cranes and offshore cranes has built a full-range lifting solution from "gram-level to ton-level", providing flexible support for precise operations in various industries.