Home |Technique and materials |Do-it-yourself deep vibrator for concrete
Date: May 23, 2017
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Concrete is widely used in construction and repair work. The material is indispensable due to its increased strength and reliability, which allows concrete structures to be used for a long time. An internal vibrator for concrete helps to ensure a homogeneous structure of the monolith, compacting the solution and removing air inclusions from the mass.
Today there are many types of vibration compactors available. Their purchase is advisable if concrete is poured in significant volumes. With small foundation dimensions, using available power tools and available materials, you can save financial resources and make a concrete vibrator with your own hands. Such a device will practically not differ in operating efficiency from its factory counterpart.
Let us dwell on the principle of operation, purpose, types and technical characteristics of the device. Let's consider recommendations for self-production.
Since air still gets in when mixing and laying the solution, you have to remove it with something
Why do you need a deep concrete vibrator?
During the mixing process, the concrete solution is actively saturated with air. This reduces the strength characteristics of concrete structures and negatively affects the reliability and service life. You can avoid negative factors if you use a submersible vibrator, the main functions of which are:
- ensuring a uniform consistency of the concrete solution;
- elimination of air cavities in the thickness of the massif;
- removing excess moisture from the concrete composition;
- increasing the strength characteristics of the material.
After vibration compaction, the plasticity and compliance of the concrete composition increases. The intensity of concrete shrinkage also increases and the curing time is reduced.
Operating principle
In formwork with reinforcement filled with concrete, it is problematic to mix the solution manually. Using a steel rod to “bayonet” a concrete mass does not bring the desired effect. There is a need to use a device that transmits high-frequency vibrations to the solution.
To remove air and improve the connection between concrete particles - these are the tasks that a construction vibrator performs
Based on the principle of impact on concrete mortar, devices are divided into types:
- Submersible-type vibration compactors (deep), which transmit high-frequency vibrations to the concrete mass through the body of the submersible nozzle.
- External platform-type devices placed on the formwork that transmit vibration to the concrete mass.
- Surface devices, the vibration from which is transmitted to a specific work area where the concrete solution is laid.
A submersible device that creates high-frequency oscillations in the thickness of the massif is widely used.
The operating feature of the vibrating compactor, which implements this principle, is based on the removal of air bubbles from the concrete solution. A high-frequency vibrator transmits vibration energy to the concrete through the working element, mixing it. Lighter air bubbles tend to rise outward. This increases the moisture resistance of the monolith, relieves internal stress, and reduces the likelihood of shell formation.
Recommendations for the type of installed engine
The following factors should be taken into account:
- the required degree of autonomy in performing work;
- distance from the power grid;
- explosive working conditions;
- equipment performance;
- upcoming filling volumes.
You can buy pneumatic tools if you have a lot of work to do. It should be taken into account that for its normal functioning it requires a continuous supply of air, the temperature of which must correspond to the value specified in the operating instructions.
To use a power tool, you must have access to a single-phase or three-phase network (depending on the type of electric motor installed). This is not always possible under construction conditions for various reasons. But from the point of view of price and performance, you can choose the equipment that has the optimal technical characteristics, both for home and professional use.
Fuel units are the best choice in terms of mobility. You can choose the model of the required power for different types of work.
Deep vibrator device
The submersible vibration compactor of the electromechanical type is designed quite simply. It consists of the following parts:
- an electric motor, which is a source of energy;
Submersible Portable Concrete Vibrator
- a flexible shaft that acts as a transmission mechanism;
- a generator attachment that creates high-frequency vibrations.
The vibrating tip can have the following shape:
- Cylindrical. This attachment is called a vibrating mace and is used when the solution is of normal thickness.
- Conical. The tip is a vibrating bayonet used to compact thick mixtures.
The working part may include:
- group of vibration attachments;
- vibration tips of various diameters;
- one or more vibrating bayonets.
The main elements of the vibrating attachment:
- Cylindrical body made of stainless steel pipe.
- Roller bearings centering the flexible shaft.
- A bushing that converts rotation into vibrations.
Incorrect use of vibration will not only bring no benefit, but can also cause harm: excessive duration of exposure will cause stratification of the solution, which will negatively affect its strength
Operating rules for the unit
When working with the unit, the following rules must be observed:
- the composition should be poured from a small height, measuredly and evenly, each new layer of concrete should be approximately 0.4–0.5 m, no more;
- it is necessary to immerse the tip of the apparatus into the solution in a vertical direction, without allowing it to move horizontally;
- the distance between dive sites should be 8–10 diameters of the club tip;
- the impact areas must necessarily intersect, which excludes untreated areas;
- to ensure excellent adhesion of the layers of concrete mixture, the mace must be immersed at least 10 cm into the penultimate layer;
- the duration of treatment must correspond to the grade of concrete and the diameter of the vibrating tip;
- it is unacceptable to allow the tip to touch the reinforcement bars or formwork panels;
- you need to pull the working part of the device out of the solution smoothly and leisurely - the hole from the tip should be completely closed;
- a deep concrete vibrator is not used as a surface vibrator;
- Maintenance of the device must be carried out promptly and regularly.
Submersible vibrator - varieties
Submersible type vibration compactors differ in their design features. Applicable:
- electromechanical devices operating from a motor with a supply voltage of 220 or 380 V and a frequency of 50 Hz. Torque through a flexible shaft 1.5–6 m long is converted into vibration of the working body;
- high frequency vibration compactors driven by a motor with a frequency of up to 200 Hz. The voltage converter reduces the motor power to 42 V and ensures the safety of concrete work;
- vibrating compactors with hydraulic drive. A design nuance is the adjustment of the oscillation frequency of the hydraulic motor, which develops pressure up to 120 bar;
- pneumatic devices controlled by a pneumatic motor using a release valve. The devices are easy to maintain and are used in the production of reinforced concrete products;
- electromagnetic type vibrators. A constant frequency of oscillation is created by a spring-loaded armature using an electric magnet. The amplitude of oscillations is affected by the weight of the armature and the elasticity of the springs.
Based on size and performance, devices are divided into the following types:
- Small-sized vibration compactors with low productivity. They are used in the construction of private facilities.
- Standard vibration compactors with vibration frequencies up to 20 thousand per minute. Used in industrial construction.
A high-frequency vibrator is widely used, providing effective compaction of the concrete mass due to its increased efficiency.
High frequency deep vibrator
High-frequency vibrator – features of choice and characteristics
When choosing a vibrator for concrete compaction, you should consider several factors:
- nature of construction work;
- features of reinforced concrete structures;
- depth of the concrete mass;
- mesh size of the reinforcement mesh.
For example, to compact a slab-type base with a small thickness, it is enough to use a device with an intermediate shaft of up to 3 m. If the depth of the formwork filled with concrete exceeds 2 m, you will need a vibration compactor with a shaft up to 5 meters long. The diameter of the vibrating tip should be 50% smaller than the mesh size of the reinforcement mesh. This will ensure the necessary penetration of the nozzle and reduce the likelihood of contact with the reinforcement.
The characteristics of deep-hole devices powered by an alternating voltage network differ in the following parameters:
- Supply voltage (220 or 380 V).
- Availability of a residual current device.
- Electric motor power (from 1 to 1.5 kW).
- The frequency of vibrations created by the working body (12–20 thousand rpm).
- Performance depending on motor power and oscillation frequency.
- The length of the intermediate shaft, if necessary, is up to 10 m.
The most effective are high frequency
How to make a vibrator for concrete with your own hands
For self-production, you can use one of the following devices:
- electric drill;
- small hammer drill with power up to 1.5 kW.
Make a submersible vibrator according to the first option by preparing the following equipment and components:
- Electric drill with a power of 0.65–1.0 kW.
- Welding machine with electrodes.
- A hacksaw for metal.
- Stainless steel pipe with a diameter of 40–45 mm.
- Steel rod with a diameter of 12–15 mm.
- Flexible cable in a waterproofed casing of the required length.
- Bearings in the amount of 2 pieces, corresponding to the internal diameter of the pipe and the dimensions of the steel rod.
A construction vibrator can be made on the basis of any power tool with an adjustable speed
Carry out manufacturing following the sequence of operations:
- Cut a piece of pipe 450–550 mm long.
- Weld an eccentric at the end of the steel rod.
- Install bearings onto the rod with weighting material.
- Insert the assembled assembly into the pipe.
- Weld the end of the pipe.
- Seal the tip exit.
- Connect the cable to the attachment and drill.
The principle of operation of the device is to convert the rotational movement of the flexible shaft into vibrations of the nozzle thanks to the installed eccentric. By adjusting the speed of the electric drill, you can change the amplitude of the oscillations.
For manufacturing, you can use a hammer drill. Required:
- steel pike;
- support washer.
The length of the peak is selected depending on the depth of the formwork. A washer is welded at the end of the rod.
The device is operated in rebound mode. A rod with a washer installed in the hammer drill cartridge rests on the bottom of the formwork and transmits vibrations to the concrete mass. Using a hammer drill with an attachment, it is easy to process significant volumes of solution in a limited time.
TOP 10 factory products
Our review examines the most popular equipment models, which receive the most adequate positive reviews. We have tried to include products from a wide price range and with different technical characteristics. Prices are for comparison purposes only.
RED MAYAK EPK-1300 – from 13,200 rub.
One of the most popular models of high-frequency submersible vibrator is produced at Yaroslavsky OJSC.
This company has a long history and therefore its products are trusted by professionals. It features convenient transportation due to the presence of a handle, good stability due to its wide base, and does not require special maintenance. With a relatively low power consumption, it provides high efficiency in compacting concrete mixtures and is used for work with reinforced structures, including eliminating voids in corners. Main technical characteristics of Krasny Mayak EPK-1300
| Parameter | Meaning |
| Type | deep |
| Power | 1300 W |
| Nutrition | 220 V |
| Vibration frequency | 17100 vibrations/min |
| Flexible shaft length | 3 m (4.5/6/9 m)* |
| Vibrating tip diameter | 51 mm |
| Dimensions | 350x180x270 mm |
| Weight | 26.9 kg |
*optional.
Below is a short video from which you can learn about the design of the EPK-1300 vibrator, as well as the features of its operation.
Caliber VER-1500 – from 4100 rubles.
The Caliber VER-1500 model is supplied without a flexible shaft and a mace - the manufacturer provides the buyer with the opportunity to select them optionally.
This will add another 3-4 kg to the mass of the vibrator, and will also increase its cost by about 1000-1800 rubles. The main advantage is portability and ease of use. The entire set of equipment can be moved within the length of the power extension cord. As for the brand, this is good China, originally from the Russian Federation. Positioned as an affordable and high-quality tool for household use. Important technical characteristics of Caliber VER-1500
| Parameter | Meaning |
| Type | deep |
| Power | 1500 W |
| Nutrition | 220 V |
| Flexible shaft length | (1/1.5/2 m)* |
| Vibrating tip diameter | 35 mm |
| Dimensions | 400x140x300 mm |
| Weight | 3.2 kg (+3.4 kg other components that are not included in the kit) |
*optional.
We were unable to find a suitable video, but most similar models work in the same way, for example, Sturm CV71101, Grost VGP 800, etc.
Sturm CV7120 – from 14,000 rub.
Do you need something reliable and durable, but don’t plan to buy expensive equipment?
Then you should pay attention to the portable unit Sturm CV7120. An option for those who have no prejudices about products from China. The brand itself is German and has been familiar to Russian consumers for more than ten years. The product is equipped with a four-meter flexible shaft and is suitable, for example, for pouring columns or reinforced concrete walls of basements. Let’s immediately make a reservation that when purchasing this product, it is advisable to immediately take care of purchasing a spare shaft with a mace. There are frequent complaints about their lack of availability from large suppliers. Important information about Sturm CV7120
| Parameter | Meaning |
| Type | deep |
| Power | 2000 W |
| Nutrition | 220 V |
| Vibration frequency | 18000 vibrations/min |
| Flexible shaft length | 4 |
| Vibrating tip diameter | 38 mm |
| Dimensions | 660x750x300 mm |
| Weight | 5.15 kg |
What result is achieved with this thing? We haven’t found a high-quality video review of this model, but everything looks something like the one in the video below.
Among the equipment of a similar design is Energomash BV-71200.
Hervisa Runner Plus 52 – from 78,000 rub.
Another representative of compact vibrators for concrete is the professional model Hervisa Runner Plus 52 from a well-known Spanish manufacturer.
The company has over 30 years of experience in the development and manufacture of vibration equipment for construction. It is not surprising that this specimen made it into our TOP, because it has its own voltage converter, durable drive and flexible shaft. In addition, the device is equipped with protection against overheating, current leakage, and stop protection for the safest and most comfortable operation. With its help you can process up to 40 cubic meters of mixture per hour! Characteristics of the Hervisa Runner Plus 52 vibrator
| Parameter | Meaning |
| Type | deep |
| Power | 1500 W |
| Nutrition | 220 V |
| Vibration frequency | 12000 vibrations/min |
| Flexible shaft length | (5/7 m)* |
| Vibrating tip diameter | 52 mm |
| Dimensions | not specified |
| Weight | (15/17 kg)* |
* depends on the configuration.
Red Mayak IV-98E – from 10,000 rubles.
In our review we have already encountered products from this plant, but we cannot ignore the platform-type model Krasny Mayak IV-98E.
Such equipment is attached to the formwork or intermediate structure, the main thing is that the vibrator axis is located horizontally. Despite its purpose, it is a fairly compact design in a durable steel case that provides protection for the engine, shaft, unbalances and other components. In addition to being used for compacting concrete mixtures with high-density reinforcement, IV-98E can be used in the manufacture of vibrating tables, vibrating plates and other equipment. Important characteristics of the product Red Mayak IV-98E
| Parameter | Meaning |
| Type | site |
| Power | 900 W |
| Nutrition | 220 V |
| Vibration frequency | 3000 vibrations/min |
| Dimensions | 365x235x250 mm |
| Weight | 22.5 kg |
This equipment is designed similarly to the IV-99B, presented in the video below.
Wacker Neuson AR 36/3/230 – from 18,000 rub.
The Wacker Neuson AR 36/3/230 model is a kind of alternative to the above product from a domestic manufacturer.
This is a German brand with production in Germany. It costs more, but it is the one that is trusted by the largest construction companies that build projects around the world. It is economical and durable, can operate in two axes without the risk of damage to the drive. Mounting to the formwork is not included in the kit - this must be taken into account before purchasing the vibrator. The cost of a proprietary mount can reach half or more of the cost of the vibration equipment itself. Basic data on Wacker Neuson AR 36/3/230
| Parameter | Meaning |
| Type | site |
| Power | 400 W |
| Nutrition | 220 V |
| Vibration frequency | 3000 vibrations/min |
| Dimensions | 289x227x103 mm |
| Weight | 7.2 kg |
The operation of such vibrators is clearly demonstrated in the following video.
Wacker Neuson AR 64/3/400 – from 70 thousand rubles.
If the equipment must work under wear and tear for the longest possible time, then you need to focus on a professional model of a vibrator such as Wacker Neuson AR 64/3/400.
This equipment is equipped with an electric motor powered by a three-phase network; the design of the unit provides for convenient installation and maintenance. Works on the basis of the same equipment as the previous product. Summarizing the above, AR 64/3/400 in a number of several pieces is suitable for construction companies for the construction of reinforced concrete walls or reinforced concrete plants. Basic data on Wacker Neuson AR 64/3/400
| Parameter | Meaning |
| Type | site |
| Power | 800 W |
| Nutrition | 380 V |
| Vibration frequency | 3000 vibrations/min |
| Dimensions | 289x227x103 mm |
| Weight | 18.7 kg |
Makita BVR450Z – from 13,000 rub.
The name of this brand is familiar to many who have at least once held a quality power tool in their hands - Japanese Makita is valued for its excellent quality and reasonable price.
The Makita BVR450Z deep vibrator model is notable for the fact that this portable device is powered by a battery. Sometimes it is very convenient not to be tied to an extension cord. The length of the flexible shaft is short, which hints at a rather limited use of the tool, for example, when pouring floors, screeds, shallow strip or slab foundations. However, we immediately warn you that by default the product is not equipped with a battery - it will have to be purchased separately, and this is another plus of 5-6 thousand rubles. Main characteristics of the Makita BVR450Z vibrator
| Parameter | Meaning |
| Type | deep |
| Nutrition | 18 V, 3 Ah |
| Vibration frequency | 13000 vibrations/min |
| Flexible shaft length | 1,2 |
| Vibrating tip diameter | 25 mm |
| Dimensions | 1483x93x250 mm |
| Weight | 3.7 kg |
By tradition, we offer you to look at a short review of a similar model to get a complete picture of the Makita BVR450Z vibrator.
Grost VGB 4000 W – from 17,000 rub.
A review of concrete vibrators would be incomplete if we ignored such an autonomous solution as the Grost VGB 4000 W. This is a gas drive supplied without a flexible shaft and a mace, the cost of which will be another 5 to 7 thousand rubles.
depending on their size. Those. for a maximum of 25 thousand rubles. You can get full-fledged equipment for working in conditions of lack of power supply. Although more often it is purchased for convenience, because in this case there is no need for a long extension cord or the use of electric generators. If anyone is interested, Grost is another good China with Russian roots. A simple device, high power and durability - what more do you need from quality equipment?! Basic characteristics of Grost VGB 4000 W
| Parameter | Meaning |
| Type | deep |
| Power | 4000 W |
| Nutrition | petrol |
| Vibration frequency | 3600 vibrations/min |
| Flexible shaft length | (3/4/6 m)* |
| Vibrating tip diameter | (38/50 mm)* |
| Dimensions | 550x410x430 mm |
| Weight | 21.2 kg |
*optional.
CHAMPION CVG424 – from 13,000 rub.
If the task is to purchase not an electric, but a gasoline vibrator, then you can save several thousand and buy CHAMPION CVG424 instead of model No. 9.
This, again, is good China, but with roots in the USA. A good compact model, which also comes without a shaft and tip (+5...8 thousand rubles). The frame is made of durable steel, has a reliable base and protects the powerful engine from damage during transportation. Features of the CHAMPION CVG424 vibrator
| Parameter | Meaning |
| Type | deep |
| Power | 4000 W |
| Nutrition | petrol |
| Vibration frequency | 3600 vibrations/min |
| Flexible shaft length | (4/6 m)* |
| Vibrating tip diameter | (28/32/38/45/50/60/70 mm)* |
| Dimensions | 550x410x430 mm |
| Weight | 23.6 kg |
*optional.
Editor's Choice
Traditionally, the editors give preference to several devices included in our review of the best equipment. The results are as follows:
- if you need a portable and lightweight model that is not tied to the length of an extension cord, then you should take a closer look at the Makita BVR450Z ;
- a classic and very convenient deep-well vibrator with an electric drive, which is also compact in size - Sturm CV7120 ;
- excellent value for money, one of the best solutions among area vibrators - Krasny Mayak IV-98E ;
- for work on construction sites not connected to the mains – CHAMPION CVG424 with petrol drive
