Specialized agencies mainly include the force of the force, the front and rear bracket, reducer, hydraulic system, mixing drum, operating mechanism, cleaning system, etc. Its working principle: by taking power device to take out car chassis power, and drive the variable displacement pump of hydraulic system to convert mechanical energy into hydraulic energy to the quantitative motor, motor and drive reducer, driven by speed reducer mixing plant, for mixing concrete.
Take power device
The domestic concrete mixing truck adopts the main engine power method. Take the role of the power plant is by manipulating the power switch to the remove of engine power, hydraulic system driven by mixing barrel, beater cylinder in racing to the rotation, feeding and transportation for the feed and the concrete mixing, reverse rotation during discharging, cut off after work end connected to the engine's power.
The hydraulic system
Took the power of the engine power (rear is generally fully functional force), transformed into hydraulic energy (displacement and pressure), then through the output of the motor as the mechanical energy (rotational speed and torque), for mixing drum rotation.
After decelerating the speed of the motor in the hydraulic system, pass it to the mixer.
A. Control the rotation direction of the mixing drum so that it is rotating during the feeding and transportation process.
B. Control the rotation speed of the mixing drum.
It consists mainly of agitator and auxiliary supporting parts. The mixing drum is a loaded container of concrete. It is made of high quality wear-resistant sheet steel. In order to be able to automatically load and unload concrete, the inner wall welding has special shaped spiral blades. When rotating, the concrete moves in the direction of the blade, which is mixed and stirred during the continuous lifting and stirring. In the process of feeding and transportation, the mixing drum is turning, the concrete is moving along the blade, and when the material is out, the mixing drum is reversed and the concrete is removed along the blade. The rotation of the mixer is ensured by a hydraulic drive. The load is 3 ~ 6 cubic meters. Of commonly used concrete mixer truck passed by the car engine power output shaft to drive hydraulic pump, and driven by hydraulic motor with high pressure oil push the mixing barrel, loading capacity for 9 ~ 12 cubic are driven by automotive auxiliary diesel engine driven hydraulic pump hydraulic motor. Blade is the main component in the stirring device, which can cause the concrete to be stirred. In addition, if the design is unreasonable, the concrete will be isolated.
The main function of the cleaning system is to clean the mixing drum, and sometimes it is also used to carry out the stirring in the course of transportation. The cleaning system also has a cooling effect on the hydraulic system.
The whole sealing device adopts the rotary sealing technology, which seals the inlet and outlet of the mixer, and solves the series of problems such as evaporation of the traditional stirring water, the separation of mortar, the casting of concrete, and the safety of the driving.
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