A hydraulic modular trailer is a big truck that can change its shape to carry really, really heavy things like gigantic machines and buildings. Think of it like a giant Lego set that can be put together in different ways depending on what it needs to carry.
The truck has special parts that can connect and disconnect from each other, sort of like puzzle pieces coming apart and going back together. These parts are controlled by a hydraulic system, which is like a bunch of little robots inside the truck that move and push things around when they get signals from the driver.
The hydraulic system uses special fluids that can move really easily and smoothly through pipes and pumps. When the driver wants to make the truck longer or shorter, taller or lower, wider or narrower, they use a special control panel inside the truck to tell the little robots which parts to move and how much.
This helps the truck to be able to carry really, really heavy things because the weight can be spread out evenly over more parts of the truck, making it stronger and more stable. And because the truck can change its shape, it can also fit through different kinds of roads and spaces without getting stuck or causing problems.
So, in short, a hydraulic modular trailer is like a giant, shape-shifting truck that can carry really, really heavy things safely and efficiently!