Concrete mixer structure composition

At present, infrastructure projects in various industries in the country are gradually increasing. Modernization cannot be achieved without concrete, and the use of concrete cannot be separated from concrete mixers. The concrete is supplied by the concrete dry mixing station and transported by the concrete mixer truck to the construction site. The vehicle has a reasonable structure, advanced technology, convenient operation, reliable work, and high efficiency. It has been widely promoted in the concrete transportation industry.

The concrete mixer truck is mainly composed of a mixer truck chassis, power take-off device, hydraulic system, speed reducer, front and rear brackets, mixing drums, operating systems, cleaning systems, sub-frames, and in-out material devices.

1) Mixer chassis

The chassis of the mixer truck is produced by the automobile factory. It is the supporting part of the entire top coat and can walk on its own. It is one of the core components of the vehicle.

2) Power take-off

The power take-off device is a kind of power output device. It removes the engine power without changing the inherent performance of the original car, and drives the hydraulic pump through the coupling to achieve functions such as feeding, stirring, and discharging. .

3) Mixer

The shape structure of the mixer tube is a cone at both ends and a cylinder in the middle, which is mainly composed of a cylinder body, a connecting flange, a raceway, and a stirring blade. According to the size of the agitating volume consists of a single cone or a double cone, the section is closed by the head and the flange is welded. The rear cone has an annular path welded to a circle perpendicular to the plane of the mixer drum. Two continuous ribbon spiral blades are welded symmetrically from the mouth to the inner wall of the cylinder bottom. In order to enhance the stirring effect, auxiliary stirring blades are installed between the two spiral blades in the middle and lower part of the mixer drum.

4) Inlet and discharge device

Mainly consists of feed hopper, unloading hopper, sliding chute and lifting mechanism, etc. It mainly completes the loading and unloading of the well-mixed concrete. It is installed at the rear of the mixer truck.

5) Sub-frame

The subframe is the base part of the entire mixer and carries the weight of the entire top coat and concrete. Secured to the chassis of the car by U-bolts and connecting plates. The rubber slats between the subframe and the main girder of the car act as shock absorption and anti-attack.

6) Front and rear brackets

The front and rear brackets are the main supporting parts of the mixing drum. The angle of the plane on the front and rear brackets determines the installation angle of the mixing drum.

7) Reducer

The speed reducer is a supporting part and a power part of the agitating cylinder, which drives the agitating drum to rotate and acts as a deceleration.

8) Operating System

The control system mainly controls the rotation of the mixer drum and the speed of the mixer drum. The steering control of the mixing drum is driven by the pull rod drive of the control system to drive the hydraulic pump variable cylinder swing rod to realize the reversal. At the same time, if the swing angle of the variable rod is increased or decreased, the pump flow rate can be adjusted slightly. The rotational speed control of the mixer drum is mainly through pulling the lever of the operating system to pull the throttle cable of the chassis engine, increasing or decreasing the engine speed to adjust the rotation speed of the hydraulic pump, thereby regulating the flow of the hydraulic pump, and achieving the feeding, discharging and stirring of the mixing drum. And stop function.

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