What Are the Basic Working Principles of Concrete Mixer Trucks?

A volumetric cement mixer includes a vehicle chassis along with a special device. Both of these carry out the work of concrete mixing and transportation. Its special mechanism majorly includes a power take-off, a front bracket of the mixing drum, a reducer, a hydraulic system, a mixing drum, a control mechanism, a cleaning system, etc.

Working Principle

The working principle (concept) behind a volumetric mixer truck is to extract the power of the automobile chassis via a power take-off device. And drive the variable pump of the hydraulic system to convert mechanical energy into hydraulic energy for the fixed motor. Afterwards, the motor drives the reducer, the latter then drives the mixing device to carry out the concrete mixing process. ProAll offers a lot of mobile concrete mixers for sale. You can have a look at them in detail on their homepage. Talking about the main system of concrete mixer, you can understand it partwise in the below part of the content.

Power Take-off Equipment

A volumetric cement mixer embraces the power take-off method of the truck's main engine. The power take-off method's main job is to bring out the engine power by influencing the power take-off switch. Followed by driving the mixing drum via the hydraulic system. The unsettling drum is rotating regularly during the transportation and feeding process to enable both concrete feeding and mixing of the concrete. Reverse rotation cuts off the power supply coming from the truck's main engine after all the concrete-related work is complete.

Hydraulic System

A volumetric cement mixer converts the electric power into hydraulic energy (displacement and pressure) with the help of power take-off. And then brings out that mechanical energy (speed and torque) with the help of a motor to generate power with the mixer drum's rotation.

Reducer

The production speed of the hydraulic system motor of the concrete mixer truck is slowed down and transferred to the mixer drum. Almost every mobile concrete mixer for sale out there in the market works on the same principle.

Controlling Mechanism

Ensure that the mixing drum is always rotating in the forward direction during the feeding and transportation process. And in the reverse direction when the concrete is ready for use. And also ensure that you always have your regular control on the mixing drum.

Stimulating Device

The mixing device of a volumetric cement mixer majorly includes a mixing drum along with its supplementary parts. A mixing drum is a concrete loading container made up of high-grade wear and tear-resistant thin steel plate. To facilitate the automatic incoming and outgoing of concrete. The inner walls of the drum and spiral blades with unique shapes are bond with each other. While rotating the concrete moves along the spiral direction of these blades. And is both mixed and stimulated during the continuous lifting and turning process. Furthermore, during the feeding and transportation process. The mixing drum rotates in a forward direction and concrete moves inward along the blades.

When concrete is coming out of the mixing drum, the latter is rotating in a reverse direction and concrete is let out alongside the blades. This rotation of the mixing drum happens because of a hydraulic device. The volumetric cement mixer with a loading capacity of 3-6 cubic metres mostly adopts the hydraulic pump driven by the vehicle's main engine through the power output shaft. And then the hydraulic motor is driven by the high-pressure oil to drive the mixing drum. The blade is an important part of the mixing setup. Any kind of damage or severe abrasion will cause uneven concrete mixing. Furthermore, if the design of the blade angle is not up to the mark, then it will lead to the separation of the concrete.

Cleaning Procedure

The main purpose behind carrying out the cleaning procedure is to clean the mixing drum. There are situations when this procedure happens to get rid of dry material during transportation. This procedure is also of great help in bringing down the temperature of the hydraulic system.