Have you seen this rotating cement mixer? This is an invention of hydraulic engineering and automobile technology!

In the automobile sector, vehicles and equipment are made that can be used in every industry in the world. One of them is this cement mixer. On the road we often see a truck with a large rotating drum called a ‘transit mixer’. It goes without saying that this vehicle, which transports ready-made cement from one place to another in the construction sector, is a masterpiece of automobile and mechanical engineering.

Why does cement not harden during travel??

When cement, sand, gravel and water are combined, a chemical process starts to harden within an hour. But the truck travels for hours from the cement factory to the construction site, yet the mix remains fresh. The main reason for this is the continuously rotating drum of this truck. This drum does not allow the cement to settle, which delays the setting process of the cement.

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Automobile and technical procedures

This truck is not just a cement mixer, but a walking factory.

• Power take-off system: While some trucks have a separate engine to turn the drum, modern trucks use the power of the main truck engine itself through ‘PTO’ technology. Engine energy is diverted to rotate the drum even when the truck is moving.
• Hydraulic motor and pump: A hydraulic pump creates immense pressure using the energy from the engine. This pressure rotates a hydraulic motor attached to the drum, allowing the drum filled with heavy cement to move at a smooth speed.
• inside ‘Spiral Blades‘: This is the real brain of this machine. Inside the drum are rotating blades like a screw. As the drum rotates clockwise, these blades push the cement in and continue mixing.
• Reverse direction and discharge: When the cement is to be emptied into the construction site, the direction of rotation of the drum is reversed. This causes the inner blades to push the cement outwards and the cement comes out easily.

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Difficulties to come

Driving this truck is not easy. The ‘center of gravity’ of the vehicle is constantly changing due to the rotating drum. So there is a fear of the truck overturning on a curve or in a gorge. Also, there is a risk of damaging the drum if the cement gets stuck inside for too long in traffic jams.

In short, the perfect combination of hydraulic power and mechanical design from the automobile sector has created an amazing vehicle that accelerates construction in the form of a transit mixer.