How to make a concrete mixer from a barrel - we make accessories
It is much more practical to make such a system that can be transported in a small car. It is desirable to provide for a simple assembly of the entire device in the working position and the same dismantling for transportation, that is, a design with a minimum number of components.
An embodiment of this design can be a base frame on which a conventional metal barrel rotates with special rollers driven by an electric motor. This, so to speak, the idea of how to make a concrete mixer. And further it will be considered in detail.
The working part is a barrel. Four plates of stirring blades, made of steel strip 0.45 x 0.1 m and thickness of five millimeters, are welded to its inner surface. They are located crosswise opposite each other at a height of fifteen centimeters from the bottom.
To make the structure more rigid, two blades measuring 0.8x0.05 m from a steel strip of the same thickness are welded crosswise diagonally from the bottom to the opposite inner side. The dimensions of the blades should be selected, being guided by the power of the motor and the number of revolutions.
Completely suitable for this purpose three-phase electric motor with a capacity of 180 W( air-cooled) and a speed of about 1200 rpm.
The downshift provides a speed of about 30 rpm and sufficient power to be transmitted to the rotating shaft of the paired pulleys. Transmission belt, wedge, there are used two belts: one - small diameter for connection to the pulley of the motor, the second - a long belt, it outside covers the barrel and a paired small pulley.
With the wheel of a larger diameter fixed to the motor shaft, the rotation is transferred to the first of two identical paired small wheels. The rotation of these paired wheels through a long belt is transmitted to the barrel enclosed from the outside. The entire system of pulleys and the electric motor are fixed on a swivel lever platform hingedly fixed to the base frame.
The bolt M14x60 is welded to the bottom of the barrel along the imaginary axis of rotation. It is important to ensure the accuracy of its alignment,this determines the operation of the entire mechanism. For convenience of work, the top of the barrel can be closed with a welded-on-size open cone nozzle. The areas of the outer surface of the barrel rolling on the rollers are closed with rubber from the wheel chamber of the car to reduce noise during operation.
Concrete mixer from the barrel - we assemble the
The base of this concrete mixer is a frame that determines the angle of inclination of the mixing barrel and carries four support rollers, the tipping handle when unloading the solution, and the spring-loaded articulated lever platform described above, on which the mounting holes for mounting the motor are made,all pulleys and gears.
The frame is welded from the steel corner to the dimensions of the barrel with the calculation of the desired angle of its inclination. On the sides of the top corners of the sixteen ordinary bearings( four on each axis, made in the form of welded U-shaped staples) are fixed already mentioned rollers. Their fastening can be made detachable by making appropriate loops with the axle.
The rear of the frame is below the front, a handle is attached to it for tipping the structure. In the middle of the rear of the frame, a support arm with a hole at the height of the bolt welded to the axial center of the bottom of the barrel is bolted vertically. This is the place for the mobile fixation of the limiter of the longitudinal movement of the barrel. Four bolts are put on the bolt, and the nut is screwed up to a level allowing free rotation of the container.
Assembly is done by installing a barrel( with a large belt already clad) on the support arm and on the base platens. An electric motor is attached to the lever pad, belts are first put on the pulleys. Under the weight of the lever, held by the selected spring, the necessary tension is provided.
We make a concrete mixer from a washing machine
A small mixer for concrete can be built from an old washing machine. Here it is possible to adapt different models, it is important that the activator is located at the bottom. The concrete mixer from the washing machine will be produced after a small alteration. To do this, remove the old activator and replace it with another shaft of the appropriate size.
On the part with the thread leaving the washing tank, using special nuts are fixed special U-shaped brackets from the metal strip with turned symmetrical blades at ninety degrees. The dimensions of such staples and the height of the blades should be selected according to the type of machine. The main thing is to make them strictly symmetrical. On this depends the appearance of beats during operation.
The staples can be riveted perpendicular to each other, and then they will have one common seating hole. When you make a concrete mixer, you need not forget about the drain hole. It must be muffled. Of course, the performance of such a mixer is small enough, but in a home-building environment it is able to provide significant assistance in the work.
