Maintaining stability when raising the body – the structural challenge of a safe tipper unloading

In the world of bulk goods transport, there’s no operation more demanding than tipping. It’s brief, but decisive. It may appear to be just a final procedural step, but in reality, it’s the moment when everything is put to the test: engineering, design, safety – and ultimately, the vehicle’s profitability.

At Tisvol, we’ve spent over 40 years designing tipping semi-trailers, and we’ve learned one key thing:

It’s not just about transport. It’s about tipping with intelligence.

The tipping process: what it is and why it’s crucial in a semi-trailer

Tipping is the process by which the trailer body is raised to allow material to be discharged. It’s a short moment, but one of high structural stress: the vehicle tilts, the centre of gravity rises, and the entire load is focused on a single pivot point.

The result? A critical instant that can compromise the stability of the unit if every technical detail hasn’t been meticulously considered.

Why is tipping such a critical moment?

During tipping, the semi-trailer reaches its point of maximum imbalance. Ground conditions, load distribution, wind action, or even minor maintenance issues can cause:

Instability

Chassis torsion

Vehicle rollovers

Economic losses or serious material damage

In this context, vehicle engineering makes all the difference – and not all tippers are built to handle it reliably.

COROA: Raising standards, minimising risk

This is the vision behind COROA, Tisvol’s premium range. A bold move to turn the most delicate moment in transport into a showcase of technical precision.

What makes the COROA model unique?

🔧 Cylinder above the kingpin

A key decision: the cylinder is aligned with the tipping pivot point. This improves stress distribution, prevents deformation, and extends chassis lifespan. This innovation is protected by a European patent. Only Tisvol can offer it.

📏 Wider, lower chassis

By lowering the chassis height and increasing its width, the centre of gravity is reduced and the base is stabilised, significantly lowering the risk of rollover even in adverse conditions.

🧠 ECAS electronic suspension

This system automatically adjusts vehicle height based on speed and conditions, improving both aerodynamics on the move and stability during tipping.

🚨 Rollover risk alert system

A simple yet vital innovation: a visual warning alerts the driver if the vehicle is in a dangerous position during unloading, giving time to act before it’s too late.

🦾 Premium bodies (CC, E-30 and UP)

Designed to offer higher usable volume without sacrificing strength, thanks to structural profile optimisation delivering greater profitability per trip.

🛡️ HYVA technology in cylinders

COROA is equipped as standard with the HYVA 179 cylinder, developed specifically for Tisvol. Its superior performance and reliability have been proven even in extreme conditions.

Purpose-driven technology: safety as standard

COROA is more than just a combination of technical features. It’s a design philosophy built on one clear principle: performance should never come at the cost of safety.
Every millimetre of COROA has a purpose – to ensure the tipping moment is not a liability, but a competitive advantage.

What’s more, the entire range is protected by a European patent, certifying its innovative and exclusive status in the market.

Beyond tipping: what COROA brings to your business

Investing in a semi-trailer like COROA isn’t just a technical choice – it’s a strategic one, with a direct impact on:

✅ Greater vehicle durability
✅ Lower maintenance costs
✅ Enhanced safety for driver and cargo
✅ Improved efficiency in every operation

And above all, it gives you the peace of mind of knowing you’re operating with a vehicle designed to handle the most critical moment in transport.

Tipping: much more than an operational detail

It’s a decisive moment. And if that moment is resolved intelligently, every unload becomes a competitive edge.

COROA is our way of making sure of it.
The way to raise everything… except the risk.