Like many summer residents, the concrete mixer was made by our user belor44 not for fun. In the summer we had to pour the foundation for the house. The nearest mortar-concrete unit where one could purchase high-quality building mixture was located 80 km from the dacha. The cost of concrete with delivery was impressive. Another option - hiring Tajikstroy - also quickly disappeared: these workers have constant problems with the tools.
How to make a pear;
How to make a bed;
How to make a gearbox.
How to correctly load components for a raster.
How to choose the volume of a pear
40 cubic meters of concrete is a considerable volume for manual labor alone. And why, when a simple device can handle this task! So the idea of mixing concrete yourself, using a concrete mixer, gradually matured. But even here it turned out that not everything was simple: the devices presented in retail outlets left much to be desired.
The conclusion suggested itself: a small homemade concrete mixer with your own hands. In the search engines, the forum member found everything he needed to know: design, dimensions, drawings, calculations, etc. For a simple homemade concrete mixer, a volume of 0.25 cubic meters seemed optimal. belor44 found all the necessary “rough” used material at metal collection points and car dismantling sites.
On FORUMHOUSE you will find that will help you decide on the volume.
How to make a pear
Sledgehammer - in right hand, the left one holds parts cut from metal 2.5 mm thick. We can start! The forum member brought all the elements of the future pear to the desired shape on the channel.
The bottom of the device was cut from metal sheet 5 mm thick.
The pear of a homemade concrete mixer can be made from a metal barrel!
One of the difficult operations for belor44 was to combine all the parts of the pear. First he tied the middle and bottom. The best assistants of the Russian master - a log and a sledgehammer - helped with this again.
The sledgehammer had to be worked hard, but carefully. For a forum member, this didn’t work out: the bottom flew out from the impact. After several unsuccessful attempts, he made a kind of limiter on the middle part of the pear: he cut the edges slightly, by 5 mm, and bent them inward. He inserted the upper part into the middle and “picked it out” using a nail puller and a piece of wood.
The experience that came after - everything shouldn’t have been done so closely. It was necessary to “loosen” the top, limiting its output in the same way as he did with the bottom.
What mistakes can be made
Before installing the upper part (before the weight of the structure became unbearable), belor44 arranged a pear seat. The forum member believes that this is his main mistake. First of all, he tore the structure apart. The second mistake was that he welded steel with cast iron. The master really wanted to get the most disassembled mechanism possible! After all, considerable loads were expected, and, therefore, repairs. However, in this case, the forum member believes, instead of a brake disc it would make sense to cut a reliable circle from steel, this would improve the quality of the product.
How to make a bed
Finally, belor44 took up the frame on which everything already assembled will be held. The forum member had no opportunity to get free bearings, so he decided to make the tilting mechanism simple: a pipe inside a pipe. The concrete mixer was not made by hand for sale, so this option is a pretty good solution.
The main thing when designing a frame is to choose the center of gravity. Otherwise, the device will tip over. Concrete unloading should take place without much effort. If during operation you will transport the concrete mixer around the site, place the frame on wheels!
The forum member’s base turned out to be powerful and heavy: not very good, but belor44 decided that it was better than devices from dubious manufacturers that wobble during operation. And in case of a reshuffle, the master had a more than good assistant - a crane.
How to make a gearbox
For the rotation mechanism, belor44 bought a flywheel and hub from Volga and a bendix from Moskvich. I did not remove the crown from the flywheel axis, although it added weight to an already not so light device. I decided that centering it and attaching it to the pear was a troublesome task, and the forum member planned to have a removable pear so that it could later be replaced with a sieve.
To tip, belor44 welded a mechanism to the frame - a flywheel and a gear from classic VAZ. He cut the gear from the Bendix, then welded it to the shaft. Two bearings were used, they fit tightly into the selected pipe. I also made a hex wheel.
I had to weld additional amplifiers. The forum member scalded the neck with a six and set about making the “gearbox”. Again, acted according to old scheme: shaft, pipe, two bearings. I calculated the pulleys on the shaft and motor in such a way that there were no more than 25 revolutions per minute.
The forum member used a 380 V, 0.6 kW engine - a little small, but proven, dating back to the times of the Union.
Experience in construction
Ready, the first tests were successful. Having studied the experience of forum members, belor44 found the most acceptable order for loading components for mixing concrete:
- Loaded all the crushed stone;
- Filled in some water;
- Filled up some of the cement;
- Filled the water again;
- Another piece of cement;
- Little by little - sand.
To cover the garage, the owner made a stronger solution by mixing cement, sand, crushed stone and water in a ratio of 1:2:3:0.7 -0.6 and adding C-3 plasticizer.
To make it more convenient, when loading, the forum member placed the pear vertically. Thanks to this, two buckets of 12 liters of cement, 4 of sand, 6 of crushed stone, and 2 (0.7 liters each) of water could easily fit and mix in the container.
See other topics from our users about:
vibrating tables, vibrating plates, mixers, concrete mixers with photographs, drawings and reviews.
Based on materials from a participant in the "House and Dacha" forum
When large-scale construction work is planned, not the last question that needs to be resolved is where to get a mortar mixer - if you mix the mortar manually, then the lost time does not in any way compensate for the savings from refusing to buy a concrete mixer. Some skills in welding and plumbing and instructions on how to make a concrete mixer with your own hands will help reduce costs.
Basic principles of operation of mortar mixers
According to the principle of operation, a self-made concrete mixer is no different from industrial analogues - the differences will only be in the materials used and sizes. In addition, repairing a concrete mixer with your own hands will be easier, since you know the self-made mechanism inside and out.
Based on the volume of planned work and available components, finished device can mix concrete in a concrete mixer in a forced way, gravity or combined. The latter is used most often due to the ease of manufacture of the device and the high quality of its work.
Forced mixing of the solution
It works on this principle construction mixer or a drill with a special attachment - a whisk is lowered into the solution and, rotating, mixes its components. But such tools are more suitable for gypsum plasters– sand and cement, especially with the addition of crushed stone, have much more weight, so in the best case, you simply won’t get a high-quality mixture, and in the worst case, when making the solution you can burn out the drill motor or its gearbox.
To prepare concrete, a slightly modified design is used - a shaft passes through the center of the container, on which blades are mounted, mixing the components of the mixture. Also good results show frame mixers that break up lumps of mortar, turning it into a homogeneous mixture. Some builders are convinced that only such an arbolite mixer can prepare an arbolite mortar with high quality.
Advantages and disadvantages
This method shows excellent results in production, but before using it at home, you should weigh the pros and cons of the design.
There is only one advantage - such a concrete mixer will produce the most homogeneous solution in the shortest time.
This device has many more disadvantages:
- Complexity of design. It is necessary to ensure the tightness of the place where the shaft passes through the mixing container. This determines how often the bearing, which is usually installed in this location, will need to be replaced. It is also necessary to reduce the “dead zones” that are located near the walls of the container - the blades or frame should rotate freely, but at the same time pass close enough to the surface so as not to leave unmixed parts of the solution there.
- Need quality parts. The concrete solution is quite heavy in itself, and adding crushed stone or other inclusions to it requires additional capacity from the concrete mixer. As a result, in order to get a good concrete mixer, you need to remember or master the basics of strength materials.
- The design is not designed for preparing a solution containing medium and large fractions of crushed stone or expanded clay - they will simply get stuck between the blades and walls.
- High energy consumption. Again, everything depends on the density and weight of the concrete in which the blades will rotate. For the same reason, a homemade forced-action concrete mixer must have a motor - if you try to rotate the shaft manually, you can just as well use shovels.
If the quality of the solution and the speed of its mixing are more important, then forced concrete mixer can be done with your own hands according to the following schemes.
Parts and device
The design consists of the following components:
- Bearing frame. Its implementation is individual in each case.
- Kneading drum with smooth inner walls.
- Working shaft. Frames or blades are attached to it to mix the solution.
- Electric motor.
- Reduction gear.
- Clutch. Transmits force from the gearbox to the shaft. Can act as a fuse when jammed.
- Hatch for pouring out the prepared solution.
- Lever for opening the hatch (or turning the drum).
Self-assembled forced-action concrete mixers require special attention to the method by which the prepared solution will be unloaded. This is a hatch in the bottom of the mixing container or a device for completely turning it over so that the finished mixture pours out through the loading compartment. It is advisable to decide in advance which method is more suitable.
Visually a forced concrete mixer in the video:
Gravity mixing
When using this method, the container itself rotates, into which the components of the solution are poured. Mixing occurs due to the constant pouring of sand and cement from top to bottom. The most difficult thing in this design is to ensure that the lid is tightly closed so that water does not leak through it.
The most important advantage of the design is its simplicity. Such a do-it-yourself mortar mixer can be made from an ordinary can; even an unnecessary and leaky one will do. You cannot drink water from it, so the hole can be sealed by any means, and the neck rarely deteriorates and still provides the necessary tightness.
Such devices can also be used during construction in places where there is no electricity - such a homemade concrete mixer, made with your own hands, does not necessarily have to be equipped with an electric drive, although its presence will greatly simplify the work.
Working on the same principle, but more common, is a homemade concrete mixer made from a barrel. It’s easier to find a container for it, it’s more spacious and allows you to mix the solution more thoroughly. As practice has shown, the solution is better mixed in a barrel secured in opposite corners.
Parts and device
The following components are used:
- Iron barrel of suitable size. Some craftsmen also use plastic containers for these purposes.
- Frame. There are no restrictions here - there is complete scope for imagination. The main thing is that it is convenient to pour out your prepared solution.
- A shaft on which the container is supported, capable of supporting the weight of a barrel of cement.
- Bearings.
- Pen. The longer it is, the easier it is to rotate the shaft.
- Handle.
- Cover for draining the finished solution.
- Clamps that hold the lid to the neck.
- Seals.
- Hinges for opening the lid.
How a self-made concrete mixer from a barrel works is clearly shown in the following video:
Combined concrete mixers
The most common devices - the solution is mixed due to gravitational influence, plus the breaking of lumps with blades or pins welded to the barrel body. Suitable for making wood concrete with your own hands. They require more time to prepare the solution than forced mixers, but have an extensive list of advantages:
- The design is as simple as possible, reliable and unpretentious in operation.
- Less force is created on the shaft rotating the barrel, which allows the use of less powerful electric motors than for forced mixing. The result is significantly less wear and tear on components.
- There is no need to seal any joints - the solution is mixed inside the barrel, and all the components of the mechanism are outside.
- It is possible to mix solutions with any size fractions of crushed stone, expanded clay and other fillers.
The simplest combined manual concrete mixer handmade from iron barrel- this is the same manual concrete mixer, but with blades or combs welded from the inside. If necessary, an electric motor can be connected to it.
Self-production
A factory-made or home-made concrete mixer consists of three main components: a tub in which the solution is mixed, a frame for attaching the components, and a drive - manual or electric (in some cases, motors from a moped or scooter are used).
In the video, a homemade tub for combined mixing of the solution is installed on a T-16 tractor:
Tub for solution
Firstly, you need to think about its size, given that it will be loaded at 30-40%. This is no longer possible, as the solution will splash out and mix poorly.
Secondly, attention should be paid to the shape - it should be pear-shaped. From above, so that water and solution do not splash out, from below, so that concrete particles do not get clogged in the corners between the wall and the bottom.
This is an almost finished tub plastic barrel required sizes- besides the fact that it fits the shape, additional advantage will be her weight.
Alternatively, a concrete mixer can be made from washing machine– if there is an old Soviet round “washing machine” lying around in the attic, then remove the laundry tank, which is specially designed to allow liquid to spin inside it. The bottom is strengthened, the top is narrowed and the tank is ready.
If there is nothing suitable, then a pear for a concrete mixer can be made from a steel sheet with a cross-section of 2-3 mm. For the bottom, you should take thicker metal - about 5 mm - it will bear the main load from the drive.
With a diameter of 500 mm and a height of 400, a compact tub is obtained, in which, however, 30 liters of solution can be prepared at a time.
The following drawings will tell you more about the design:
You can make a high-quality pear for a concrete mixer without using blades. In the diagram shown, instead of them, mortar dividers made of 16 mm reinforcing rod are welded inside the container, which further strengthen the structure. This design is an excellent mixer for wood concrete.
Attachment to the shaft occurs through the hub from car wheel, which is welded or screwed to the bottom. If there are no car parts lying around in the garage, then the fasteners will have to be made manually according to the drawing.
Support frame
There can be a variety of variations in its design - there is complete freedom of action, the main rule of its manufacture is that it securely holds all components and provides free access for loading and unloading concrete.
The main differences in engineering lie in the method of pouring the finished solution, for which the tub itself is made movable, or the entire frame is designed in a certain way.
For a tub made of steel sheet, the optimal frame is one that allows it to tilt. The container itself is connected to the gearbox drive (15), to which the force comes from the engine (17) through the coupling (16).
All this is mounted on a subframe (18) and rotated on a hinge (14). For different types of solutions, the working slope of the tub can be adjusted, for which an eye (22) is welded to the subframe, through which a sector (10) passes, held in the desired position by a pin (23).
The sector needs at least three basic provisions:
50% slope – for heavy solutions.
A slope of 30% is for light mixtures (for example, plaster).
Horizontal position to rinse the container.
Electric motor and gearbox
These parts are rarely purchased separately - it’s easiest to use what you have on hand. The electric motor will fit from a washing machine, electrical diagram from there, and gearboxes are assembled from bicycle wheels, belts or chain drives. The closest thing to the factory design is a flywheel welded to the bottom, which spins from the “native” Benedix car starter mounted on the shaft.
All calculations are made based on the following considerations:
- The engine power is selected according to the ratio of 20 watts per liter of solution.
- The number of revolutions produced by the gearbox for the tub should be in the range of 30-50 per minute. A smaller amount will increase the mixing time, and a larger amount will splash the solution or generally cause centrifugal forces, due to which mixing will not occur.
Briefly about the main thing
A manual concrete mixer assembled with your own hands is a completely solvable task for a person who knows how to work correctly with welding machine and possessing plumbing skills.
If you are making a mixer with your own hands from a barrel, then you can choose a plastic container that is completely ready for installation.
When assembling, you need to remember about engine power, the optimal number of revolutions and careful alignment of the mechanism.
A do-it-yourself concrete mixer is necessary for construction work. If you need to erect a building, you will need a lot of concrete. Even a wooden building requires a solid concrete foundation. In view of this, it is impossible to save on material.
DIY options
Don't know how to make a concrete mixer? There are several options. Simple option - handmade product, powered by human power. Complex option - homemade device using an electric motor. It should be made from improvised means.
Making at home requires observing the nuances. The product must be:
- Safe. It is especially important to pay attention to the gearbox powered by electric current.
- Low cost, ease of production. The parts you need for production should be cheap.
- Ease of use. A mechanical concrete mixer is practically no different from a manual machine, and it is much easier to use. Decide in advance on the type of device.
Materials and tools
For a concrete mixer from a barrel manual type you will need the following materials:
- channel;
- card loops;
- Bulgarian;
- 200 liter barrel;
- bearing housings;
- metal corners (50x50 millimeters);
- welding machine;
- fasteners;
- flanges;
- pipe.
How to make a concrete mixer with your own hands with an electric motor? Additional materials required:
- electric motor;
- pipe sections;
- rod reinforcement;
- corners.
DIY concrete mixer from a barrel (video)
Step-by-step instruction
- Cut holes on the side (24x30 cm) - they are required for laying the concrete components and the hatch.
- The hatch will be opened using card hinges.
- Flanges are fixed to it. Inside the barrel they will prevent the walls from breaking.
- The comb is made from corners. It speeds up the process of preparing the mixture. The length of the corners is 760 millimeters; they are installed inside the barrel. The pins are fixed to the corners by welding.
- The elements are welded. The racks are placed near the ends of the barrel.
- To give the concrete mixer stability, the supports of the racks are dug into the ground (the depth should be 30 centimeters), and the soil is compacted.
- Levers are attached to both sides of the shaft. The length of the handles should ensure that the drum can be rotated with both hands.
After the concrete mixer structure is ready, it is placed on the site. It is necessary to choose a place where the concrete components will be stored. They are inserted through the hatch, then the shaft is rotated. To ensure mixing of the mixture, 15 revolutions are enough.
Important! Build-ups may appear inside the barrel. For cleaning, stones and water (1 bucket) are placed in the drum. Next, it is enough to make 25 revolutions of the shaft. The contents of the barrel are then emptied.
Engine Installation
The production of a barrel with an electric motor is carried out using a single-phase motor. Its rotation speed should be less than 40 rpm.
You can use motors from old washing machines - “Volna”, “Chaika”. They have sufficient torque. It is important to remember that the optimal rotation speed for the tub is between 20 and 30 rpm. For this, different gearboxes are used. The easiest way is to use a drive belt and pulley.
It is also allowed to use a motor from a motorcycle running on gasoline. This device is convenient to use because it does not depend on electricity. A chain reducer will help reduce the rotation speed. The engine is attached with 4 bolts to a bracket welded to the body.
Free concrete mixer plans
Important nuances
- To make it convenient to use the device, it is worthwhile to provide a structure for overturning (it is made from corners) and a mechanism for transportation.
- Before making it is worth taking into account individual characteristics and show design resourcefulness. This is the only way to create a product that will be convenient to use.
- For high-quality work, it is necessary to ensure rotation of the shaft through the bearings. The maximum dose of solution is limited to 7 buckets.
Drawings: design features
- It is not difficult to draw up a drawing for creating a concrete mixer. To make a simple device you will need a bucket, a drill, and a bracket. But you can also produce little concrete. However, using the presented design, it will be possible to make concrete for a garden path or pour the floor in a room. To carry out large volumes, an appropriate capacity is required - from 150 liters. It can be welded from sheets of metal.
- The next stage is the construction of the base. It should also be reflected in the drawing. The foundation must support the weight of the machine and concrete. It must also be stable. When performing minor work, a frame made of timber with a cross-section of more than 100 millimeters is suitable. For large volumes, a metal frame should be preferred. The structure is assembled using welding.
- The engine can be made from an old motor washing machine. To ensure the required rotation speed, it is worth using gearboxes. They can be made of belts and pulleys.
Even when producing a simple device, drawings are needed. They are much easier to work with.
Operating principle of a concrete mixer (video)
To carry out construction work, you simply need a concrete mixer. You can do it yourself. The product can be manual or equipped with an electric motor. Don’t forget about the drawings; with their help, the work will be completed quickly and without errors!
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Cement and concrete mortars are used to carry out construction activities and improve the territory. The process of manually preparing mixtures is labor-intensive and time-consuming. It does not guarantee the homogeneity of the working mixture. But purchasing an expensive concrete mixer for a one-time batch is impractical. The way out of this situation is to make your own concrete mixer. She will allow minimum costs independently prepare a solution with a homogeneous consistency.
Example of a concrete mixer suitable for home use
Construction of a household concrete mixer and classification of mixers
Units designed for mixing concrete solutions are offered to enterprises and manufactured by home craftsmen in various options. Let's consider the design of the mixer, which consists of the following components:
- a metal frame or bed that combines the units into a single structure. The frame absorbs dynamic and static loads, ensuring the stability of the equipment. For heavy units the frame is stationary, and for small-sized mixers it is equipped with wheels to facilitate transportation. To make a metal frame, you can use a corner or steel profile different section;
- working body designed to increase the homogeneity of the batch. The activator, in contact with the stirred solution, affects the components of the mixture. As a result, the concrete solution acquires a uniform consistency. Blades of complex configuration, special blades, augers and other types of activators are used as mixing organs;
- tank in which concrete is mixed. Such a container is called a barrel and can be made from various materials. For self-made working capacity, you can use household devices that have lost their relevance and functionality - from washing machines to metal barrels. The containers used differ in size and volume, which affect performance;
- unloading device that facilitates and accelerates the drainage of the prepared solution. Design drain mechanism determined by the layout of the concrete mixer, the design and dimensions of the barrel, as well as the weight concrete mortar. Various technical solutions are used to facilitate the unloading process;
- drive station. An electric motor is used as the driving unit. The transmission of torque from the electric motor can be carried out through a reduction gearbox or a belt drive. The transmission ratio and power must allow the heavy container filled with solution to rotate smoothly.
The concrete mixer differs not only in its design, but also in its mixing methods. According to the principle of operation, mortar mixers are divided into the following types:
- gravitational A distinctive feature of these mechanisms is the presence of a rotating container and a stationary screw activator. Stirable cement mixture under the influence of gravity, it falls onto the screw axis without any effort. Uniform mixing of ingredients is ensured by the action of blades welded inside the rotating tank. The gravity mixing method allows you to prepare concrete with the required degree of mobility;
- forced. They mix cement mortar inside a permanently fixed tank due to the action of moving elements. The performance characteristics and homogeneity of the working solution prepared in such mixers are much higher when compared with gravity units. The forced mixing principle is rarely used in private housing construction. It is relevant in concrete mixers intended for industrial use.
Gravity concrete mixers 120l According to the duration of operation, mixers are divided into the following types:
- periodic action, used for private use. They are equipped with a low-power electric motor;
- constant functioning. They are used for industrial purposes and are equipped with a powerful electric drive.
Let us dwell in more detail on the design of devices, the independent production of which is quite simple.
Do-it-yourself homemade concrete mixer - popular designs
Homemade concrete mixer from a barrel When planning your own production, it is advisable to familiarize yourself with proven designs. Various device designs are possible, of which the following units are the most popular:
- mechanical concrete mixer. It is a barrel cut along the longitudinal axis, hinged on a metal frame. Inside the container there is a movable shaft with blades. Torque is transmitted from the electric motor through a V-belt drive and gearbox. Unloading of the prepared solution is carried out by tilting the tub. The advantage of this mortar mixer is the reduced mixing time. The disadvantage of the unit is that the solution splashes at an increased rotation speed;
- concrete mixer made from a barrel, equipped with an activator. According to the layout solution, this version of the mortar mixer is similar to the previously described one. The main difference is the use of a whole barrel, in which there is a sealed hatch for loading ingredients and unloading the solution. Torque transmission can be carried out either manually or using an electric drive. IN this option The container rotates, inside of which longitudinal combs are fixed. The quality of the kneading is determined by the number of revolutions, and not by the duration of mixing. Despite the complexity of the design, such mechanisms are mass-produced;
- homemade concrete mixer with mixer. When planning to make a concrete mixer with your own hands, you should pay attention to this option. Despite the complexity of the design of such a mortar mixer, it is worth working on. The device provides increased mixing homogeneity concrete mixture due to the additional degree of freedom. The container with the activator is mounted on a metal frame and can rotate about the longitudinal axis. The frame assembled with the tank has an additional degree of freedom due to the hinged mounting on the supporting frame of the unit. It is important to ensure the tightness of the tank and ease of unloading;
- household concrete mixers of vibrating type. To create a mortar mixer with a vibration operating principle, you will need a high-power hammer drill, in the chuck of which a metal shaft is fixed. The hammer drill should be firmly fixed to the frame, ensuring that the shaft is coaxially positioned with the center of the container. On the opposite side of the shaft, a car disk with a smaller diameter should be firmly fixed internal size barrels. The vertically mounted barrel is then filled with ingredients. The components of the cement-concrete mixture are evenly mixed under vibration. When deciding how to make a concrete mixer with your own hands from a car wheel, use this option.
Any design option is suitable for making a concrete mixer yourself.
Homemade concrete mixer with mixer DIY concrete mixer - pros and cons
Regardless of whether you will be making a large concrete mixer or a small-sized mixer, before starting production, familiarize yourself with the advantages and disadvantages of homemade devices.
Advantages of self-made mortar mixers:
- saving Money compared to purchasing a finished unit;
- increased quality of the prepared cement-concrete mixture;
- reduced duration of mixing concrete mortar ingredients;
- convenience of unloading the prepared mixture by tilting the mixer barrel;
- the possibility of manufacturing a manually driven mixing device;
- a wide selection of materials and containers for self-production.
Drawing. Dump concrete mixer Problematic issues associated with independent production of mortar mixers:
- complexity of manufacturing living conditions without professional training;
- the need to adjust components and elements to ensure trouble-free operation;
- splashing cement mortar at increased stirring frequency.
DIY concrete mixer - pros and cons Analyzing the advantages and disadvantages, many developers prefer to manufacture concrete mixers themselves. It is necessary to take into account that if you are making a concrete mixer from a barrel with your own hands, you must use drawings only that have been tested in practice.
How to make a concrete mixer from a barrel with your own hands
When thinking about how to make a concrete mixer with your own hands, prepare drawings or sketches in advance. For production, you can sketch a full-scale sample that has proven itself positively under operating conditions. Let's consider the features of self-production of various options.
How to make a manual and electric concrete mixer
The manual version of the mortar mixer is the simplest. It is best suited for preparing small volumes of mixture and is cheaper than electric models. The mixing process is carried out by filling the reservoir with components and then transmitting torque by turning the handle.
Design hand-held device It is a metal frame on which a rotary shaft with a mixing container is mounted in hinged supports. A handle is attached to one side of the drive shaft.
The assembly algorithm involves performing the following operations:
- Welding of metal structures. It consists of two triangular sidewalls connected by jumpers. In the upper part there are bushings for fastening the rotary shaft.
- Preparing the mixing tank. You can use a barrel, milk can or washing machine body as a container. The blades must be secured inside.
- Installing the container on the rotary shaft. It is important to ensure a rigid connection and seal the gaps in the shaft mounting areas.
- Fixing the mixing handle and monitoring the tightness of the mixer. For testing, it is necessary to fill the container with water and make sure there are no leaks.
Preparing the Mixing Tank By following the specified sequence of operations, you can easily make a concrete mixer with your own hands. Drawings or sketches can be adjusted to include the possibility of using a milk can or other container.
If you fasten a V-belt drive pulley or a chain drive sprocket on the side of the shaft opposite the handle, you can ensure transmission of torque from the gearbox connected to the electric motor. A DIY concrete mixer made from a barrel, driven by an electric motor, will provide increased efficiency mixing.
Homemade concrete mixer with a washing machine engine
Using a 0.18 kW motor with a rotation speed of 1500 rpm, you can assemble an electric drive for a mortar mixer. To transmit torque, a starter gear and a flywheel from a passenger car are used.
A do-it-yourself mobile concrete mixer from a washing machine is made in the following order:
- Weld the frame with the axles for the gear drive.
- Secure the wheels.
- Install the drive gears on the axles.
- Attach the motor and pulley.
- Assemble the belt drive.
- Attach the barrel to the end of the flywheel.
All that remains is to connect the power supply and check how the homemade concrete mixer from the washing machine works.
Conclusion
Based on the recommendations given, it is easy to make a concrete mixer with your own hands. Before starting self-production, it is important to decide on the design of the device. When figuring out how to make a concrete mixer with your own hands, prepare the drawings first. They will help prevent mistakes.
No construction project of any scale is complete without a high-quality concrete mixer. The device is not cheap, but it is periodically necessary at the dacha or in the homestead, so many people think about buying it even in cases where the question of global construction is not at issue. You can get out of this situation by building a high-quality concrete mixer yourself. Today we’ll look at several options on how to make this easier and cheaper.
Concrete mixer. Why is it needed?
A homemade concrete mixer with your own hands opens up a lot of prospects for working with concrete and not only with it, but with all building mixtures. By spending some time building a device of any complexity level, you can get reliable design, which will help out not only its owner, but also its neighbors more than once.
It is useful for preparing mortar when laying brick, foam block, stone, and for building foundations different types, for the manufacture of decorative elements and landscape design, For example, garden paths. The price of the most inexpensive concrete mixer is about 8 thousand rubles.
Prices for concrete mixers
On average it will have 20-25 liters of batch, and the power can be from 150 W. Not the best choice even for periodic use, especially for construction. The mixing drum in such concrete mixers is belt driven by an electric motor, and this is the most simple design, which you can buy.
More advanced and productive models are in a more serious price category. About 22 thousand piglets for a concrete mixer with a rim driven mixing drum. Its volume will be from 120 to 140 liters, which is approximately 80 kg of the finished mixture. This is not yet a professional model, but it can already be used for small-scale construction. Now that we are guided by the prices and characteristics of ready-made concrete mixers, we can consider options for building it ourselves, and the design can be chosen depending on how many cubes we need in a ready-mixed concrete mixer.
Choosing a concrete mixer design
For a summer residence or personal plot everyone will be able to choose a device of such productivity that they need it, and not overpay for extra cubic meters of ground air. This is the main advantage of building a concrete mixer yourself. The second advantage is that you can use literally everything you have at hand and build a concrete mixing plant with minimal costs in terms of money and time.
That is why the choice of the device concept remains with the owner. We publish photos of the most interesting and simple devices, but you can always complicate the design.
Required design elements
Be that as it may, any concrete mixer must have the following elements in its design so that it can minimally perform its functions:
How to make a frame and select an electric motor
The frame and frame of a concrete mixer can be made of wood, but there are many questions about the practicality of such a design. As a temporary option, you can use 15x15 timber, but whether this makes sense is up to each individual to judge. The optimal option for durability and strength is a welded frame made from angle or rolled steel of any profile. We have presented several drawings in the photo as an example.
If you decide to install electric motor, as a rule, they use a motor from a household washing machine. Empirically, it has long been calculated that 25-30 revolutions per minute at the outlet of the gearbox is quite sufficient for high-quality mixing of any mixture. The electric motor from a washing machine can provide good torque, the motor is quite durable, especially if it is used in a gentle operating mode. For more productive and high-volume concrete mixers, three-phase electric motors are used.
Mandatory geometric parameters for a cylindrical type concrete mixer are the inclination angle of the main axis of about 40-45 degrees. In this case, a folding mechanism is needed to unload the finished mixture. There are options homemade concrete mixers from a barrel with a horizontal mixing drum. In this case, a hinged hatch is installed in the barrel, which closes tightly during the preparation of the concrete mixture, and opens during unloading, and the finished mixture falls into a container prepared in advance.
There are many designs and types of homemade concrete mixers. The main thing when designing and building it is patience and the ability to use basic tools and welding, which is what we wish for you. Good luck to everyone!
