What Is a Multi Crane?
A multi crane is a compact, lightweight, hand-pushed crane designed for lifting and moving loads in confined spaces or areas lacking other crane facilities. Resembling a miniaturized version of a standard crane, it features wheels for mobility and can be manually operated, much like a cart. These cranes are characterized by their portability, with some models weighing as little as 100 kg and featuring foldable arms and legs for easy transportation in a light van over distances. Hydraulic-driven arm models are also available, simplifying the process of moving the arm up and down.
Applications of Multi Cranes
Multi cranes are ideal for situations where traditional crane equipment is impractical or unavailable, such as in tight spaces requiring the loading and unloading of goods. They are particularly beneficial in agricultural settings for handling machinery and in spaces where their compact size allows for insertion into vehicle beds for direct lifting of loads. Their ease of human-powered operation makes them useful in factories and warehouses for loading, unloading, and moving cargo and machinery beside vehicles.
Principle of Multi Cranes
The core structure of a multi crane includes a wheeled base with a strut and a manually operated arm, raised and lowered via a hydraulic cylinder. A manual winch on the pillar facilitates load lifting with a wire and hook mechanism. Stability during operation is provided by foldable, V-shaped legs that support the crane along with the base wheels, allowing for the crane to move and lift loads effectively.
Types of Multi Cranes
Multi cranes are among the smallest crane types, typically supporting loads of 500 kg to 1,000 kg and reaching lifting heights of up to 2.5 meters. They usually weigh between 100 kg to 200 kg, with arm lengths ranging from 1m to 2m, and adjustable arm lengths for varying lifting loads. Some models feature the capability to rotate while lifting, including additional lateral support to maintain balance.
How to Select a Multi-Crane
Selecting the right multi crane involves considering the workspace size and the weight of the cargo to ensure safe operation. Choosing a crane with an appropriate size and lifting capacity is crucial to prevent accidents, such as tipping over or dropping the load, especially when handling objects heavier than the crane’s maximum lifting load.