A fruit crusher machine is designed to efficiently crush and extract juice from various types of fruits. The structure and principles of a fruit crusher machine can vary depending on the specific model and manufacturer. 

The structure of a fruit crusher machine often consists of a hopper, a crushing mechanism, a collection container, and a motor. The hopper is where you place the fruits that need to be crushed. It typically has a wide opening to accommodate different fruit sizes. The crushing mechanism, usually in the form of rotating blades or rollers, is responsible for breaking down the fruits into smaller pieces. The motor powers the crushing mechanism and ensures efficient crushing.

The principle behind a fruit crusher machine is to apply force to the fruits, breaking them down into smaller pieces while extracting the juice. Depending on the specific design, the crushing mechanism may use sharp blades or rollers to crush the fruits. The force applied can be manual or motorized, with motorized machines being more common due to their efficiency.

As the fruits are crushed, the juice is released and collected in a container placed below the crushing mechanism. Some machines may have a built-in juice collection system, while others may require the use of an external container.

 Some machines may include filters or screens to separate the juice from the pulp, while others may have adjustable settings for different fruit types or desired juice consistency.Fruit crusher machines are designed to simplify the process of extracting juice from fruits by efficiently crushing them and collecting the juice.