2 Ton Folding Boom Marine Crane

2-Ton Folding Knuckle Boom Marine Crane

Small fishing vessels and workboats often have limited deck space, making the installation or retrofitting of conventional cranes cumbersome; many owners struggle with cranes that take up too much room or require complex installation procedures that disrupt deck operations. We have introduced this 2-ton folding knuckle boom marine crane; its compact, foldable design fits narrow decks, allows for rapid installation without extensive modification, and reliably handles routine shipboard lifting tasks. As a manual knuckle boom crane, it differs from telescopic boom cranes and is better suited for vessels with space constraints. Its load specifications are clearly defined: a rated lifting capacity of 2,000 kg at a 2-meter working radius; a safe working load of 1,050 kg at a 3.76-meter radius; and a rated working load of 750 kg at a maximum extension radius of 5.10 meters. The base features pre-drilled mounting holes, allowing for direct attachment to the ship's mounting platform and eliminating the need for additional cutting or welding. While other knuckle boom cranes focus on flexible folding and stowage, and grab machines or forestry cranes are typically used for land-based material or log handling, this product is designed for marine deck lifting—ideal for hoisting supplies and loading/unloading fishing gear on fishing boats and small workboats. Its structure facilitates on-board maintenance and is built to withstand long-term marine operating conditions.

Product Features

Clear load specifications; pre-drilled mounting holes on the base allow for direct deck installation without extra modification; foldable design saves deck space.

Usage Tips

Operate strictly within the rated load limits for the corresponding radius; do not overload. In high-salinity marine environments, promptly clean salt deposits from the boom and articulated joints after each operation.

FAQ

Q1: How do the usage scenarios for this crane differ from those of a telescopic boom crane?

A1: This model features a folding articulated boom design, making it compact when stowed and ideal for fishing vessels with limited deck space. In contrast, telescopic boom cranes offer greater reach and are typically used on vessels with ample space that require long-distance lifting.

Q2: Does installation require custom modification of the vessel's mounting base?

A2: The base comes with pre-cut mounting holes, allowing it to be secured directly to the existing vessel mount; no additional modifications are usually required.

Q3: What does routine maintenance entail?

A3: Key tasks include regularly applying grease to articulated joints and rotating parts, cleaning off salt deposits after every voyage, and checking fasteners for looseness to minimize the risk of failure due to seawater corrosion. Maintenance can be performed on-site aboard the vessel.

Q4: Can a grab bucket be installed to convert it into a grab-style machine?

A4: The standard model is configured for hook lifting. If a grab bucket or grabbing mechanism is required, we can discuss specific accessory options separately. However, as this model was originally designed for lifting deck cargo—unlike the land-based timber handling operations of forestry cranes—direct modification for heavy-duty grabbing is not recommended.

Q5: Is the rated load fixed at 2 tons?

A5: The load capacity varies with the working radius; the 2,000 kg capacity is achievable only within a 2-meter radius. The safe working load decreases as the radius increases, so you must always consult the load chart before operation.