Dimensions and structural components of concrete mixer trucks

Small concrete mixer trucks have a capacity of 3-8 cubic meters. Larger ones range from 12 to 15 cubic meters. The 12-cubic-meter mixer trucks are the most commonly used on the market. Concrete mixer truck specifications include 3 cubic meters, 3.5 cubic meters, 4 cubic meters, 5 cubic meters, 6 cubic meters, 8 cubic meters, 9 cubic meters, 10 cubic meters, 12 cubic meters, and 16 cubic meters, etc. Each model number has a different meaning, mainly reflecting the loading capacity. The volume of a mixer truck is a basic parameter; the larger the volume, the more concrete it can carry, and the more expensive the mixer truck. The choice of volume depends on the purpose of the purchase. If transportation is based on a price per cubic meter of concrete, a larger capacity mixer truck is better; if it's for monthly transportation, a 12-cubic-meter mixer truck can meet basic needs.

Structural Components of a Concrete Mixer Truck

A concrete mixer truck mainly consists of a chassis and a superstructure, which can be broadly categorized into ten parts: chassis system, hydraulic transmission system, mixing tank, discharge system, cleaning system, subframe, control system, support roller system, feeding system, and electrical system. The front end of the mixing tank is connected to the reducer and mounted on the front platform of the frame, while the rear end is supported by two support rollers mounted on the rear platform of the frame via roller tracks.

It typically includes four main components: the car chassis, the mixing drum, the transmission system, and the water supply device.

1. Chassis system: The main component of the concrete mixer truck, the entire transportation function of the concrete mixer truck is realized by the chassis.

2. Hydraulic transmission system: The engine power taken from the power take-off is converted into hydraulic energy (displacement and pressure), and then output as mechanical energy (speed and torque) by the motor to provide power for the rotation of the mixing drum.

3. Mixing Tank: The mixing drum is a key component of the entire concrete mixer truck. It is the container for storing concrete and plays a decisive role in preventing concrete from hardening and segregating. The tank contains blades, which primarily serve to mix and guide the concrete.

4. Discharge system: It mainly consists of a main discharge chute, an auxiliary discharge chute, a locking rod, etc. The auxiliary discharge chute extends the length of the main discharge chute.

5. Cleaning System: The cleaning system mainly consists of a pressure water tank, water guns, water pipes, valves, etc. It uses air pressure water supply, and its main function is to rinse the hopper after loading and the mixing drum and unloading trough after unloading to prevent concrete from sticking.

6. Subframe: The subframe of the mixer truck is the main load-bearing component, supporting almost all the loads during operation before transferring them to the chassis. The subframe also helps to mitigate road bumps and impact loads caused by deceleration. The entire subframe consists of the main beam, front support frame, and rear support frame.

7. Control System: The operating system consists of a controller, linkage shaft, flexible shaft and linkage mechanism, which mainly controls the speed and direction of rotation of the mixing drum.

8. Roller system: The part where the rear of the mixing tank connects to the subframe, mainly serving to support the roller body.

9. Feeding system: mainly composed of a feeding hopper and a support. The feeding hopper is subject to greater impact and wear, so the material must have good wear resistance. The support mainly serves to reduce the impact force.

10. Electrical System: This mainly refers to the entire electrical system of the mixer truck, including the taillights, side marker lights, corridor lights, cooling fan motor, etc.