Hydraulic System Of Self Loading Concrete Mixer Truck

Hydraulic system of self loading concrete mixer truck is the important link which provides the driving energy to the mixer drum, feeding loader, and other actuators to move. So, the hydraulic system’s performance and stability are directly related to the operational efficiency and safety of the entire vehicle. How does it work?How can we deal with the common faults? Here, you may find the answers.

Equipment ModelLT-1.2 ~ LT6.5
Discharge Capacity
(m3/batch)
1.2/1.8/2.0/2.6/3.5/4.0/5.5/6.5
Engine ModelYUNNEI/Yuchai/Weichai 58kw-110kw
Gear4 forward 4 back
Oil Tank16 liters
Drum Rotate270º

Composition In Hydraulic System Of Self Loading Concrete Mixer Truck

The hydraulic system of self loading concrete mixer truck is the key power transmission and control part, mainly composed of oil tank, oil pump, control valve, actuator components (such as motor, oil cylinder), and hydraulic pipeline. The oil tank is responsible for storing hydraulic oil, while the oil pump is responsible for extracting and pressurizing the hydraulic oil from the tank to deliver it to various actuator components. The control valve plays a role in regulating the flow direction, pressure, and flow rate of hydraulic oil, ensuring that each actuator can work according to the predetermined action requirements. The hydraulic motor and hydraulic cylinder are connected to an actuator, which converts hydraulic energy into mechanical energy and ultimately drives each actuator to move.

Mixing drum of self loading concrete mixer
drum type self loading concrete mixer

Hydraulic Oil Tank

This is the “heart” of the hydraulic system, used to store hydraulic oil. The oil tank not only ensures sufficient hydraulic oil supply to the system, but also plays a role in heat dissipation and impurity precipitation. The design and material selection of the fuel tank are crucial for ensuring the cleanliness of hydraulic oil and the stable operation of the system.

Hydraulic Pump

Hydraulic pump is the power source of the entire hydraulic system, which converts mechanical energy into hydraulic energy and provides the required power for the entire hydraulic system. The performance of hydraulic pumps directly affects the pressure and flow output of hydraulic systems, so it is crucial to choose high-performance and durable hydraulic pumps.

hydraulic motor

Hydraulic Valve

Hydraulic valve plays a controlling and regulating role in the hydraulic system. They can control the flow direction, pressure, and flow rate of hydraulic oil, thereby achieving precise control of movements such as lifting, rotating, and tilting of the mixing tank. Common hydraulic valves include directional control valves, pressure control valves, and flow control valves.

Hydraulic Motors and Hydraulic Cylinders

Hydraulic motors and hydraulic cylinders are the actuators of hydraulic systems, which convert hydraulic energy into mechanical energy and drive the mixing tank to perform various actions. Hydraulic motors are usually used to drive the rotation of mixing tanks, while hydraulic cylinders are used to achieve the lifting and tilting of mixing tanks.

Radiator and Hydraulic Oil Filter

The radiator is used to reduce the temperature of hydraulic oil and prevent system failures caused by excessive oil temperature. Hydraulic oil filter element is used to filter impurities in hydraulic oil, ensuring the cleanliness of hydraulic oil and preventing impurities from causing damage to the system.

These components together constitute the hydraulic system of the self loading concrete mixer truck, and they work together to ensure the normal operation and efficient operation of the mixer truck. In practical use, it is necessary to regularly inspect and maintain the hydraulic system, promptly identify and solve potential problems, in order to extend the service life of the system and improve work efficiency.

Working Principle Of Hydraulic Control System Of Self Loading Concrete Mixer Truck

The working principle of hydraulic system of self loading concrete mixer truck is based on Pascal’s law, which means that when a liquid transfers pressure in a closed container, the pressure at each point is equal. When the oil pump is working, it extracts hydraulic oil from the tank and pressurizes it. Through the adjustment of the control valve, the high-pressure oil is transported to the corresponding actuator. The executing components work under the action of oil, such as the motor driving the rotation of the mixing drum, and the oil cylinder controlling the lifting of the mixing drum. The hydraulic control system achieves various functions of the self loading mixer truck by precisely controlling the flow direction and pressure of the oil.

Daily Maintenance

To ensure the normal operation of the hydraulic system of self loading concrete mixer truck, daily maintenance work is crucial. Firstly, the hydraulic oil level and quality should be regularly checked to ensure that the oil is clean and free of impurities. Secondly, it is necessary to check whether there is any oil leakage in the hydraulic pipelines and joints, as well as whether the working status of the control valve and actuator components is normal. In addition, it is necessary to regularly replace the filter element and clean the fuel tank to prevent oil contamination and blockage.

Common Faults And Solutions

  • Fault Phenomenon 1

The mixing drum cannot rotate or the rotation speed is too slow.

Reason: It may be due to oil pump malfunction, motor damage, or control valve blockage.

Solution:Check the working status of the oil pump and motor, and replace them in a timely manner if there is any damage; Clean or replace the control valve to ensure smooth oil flow.

self loading concrete shipped Saint Vincent and the Grenadines
self loading concrete mixer to Saint Vincent and the Grenadines
  • Fault phenomenon 2

The mixing drum cannot lift or cannot lift.

Reason:It may be due to cylinder leakage, control valve failure, or hydraulic pipeline blockage.

Solution: Check the sealing performance of the oil cylinder, and replace the sealing components if there is any leakage; Check the control valve and hydraulic pipelines, clean or replace damaged components.

  • Fault phenomenon 3

The temperature of the hydraulic system is too high.

Reason: It may be due to insufficient oil, oil pump overload, or poor heat dissipation.

Solution: Add hydraulic oil to the appropriate level; Check the working status of the oil pump. If it is overloaded, adjust the load or replace the oil pump; Clean the radiator to ensure good heat dissipation.

self loading concrete mixer construction site
5.5m3 self loading concrete mixer

In summary, the hydraulic system of self loading concrete mixer truck is the key to the normal operation of the vehicle. By understanding its composition, working principle, daily maintenance, common faults and solutions, we can better ensure the operational efficiency and safety of the mixer truck, and provide strong support for the smooth progress of construction projects.