Homemade vibrator for concrete from a perforator with your own hands

The need to make a vibrator from a hammer drill appears during the pouring of the screed, foundation, and leveling of the concrete surface. The device is in demand for small-scale production or the creation of reinforced concrete structures at home. Instead of buying a ready-made vibrator for a hammer drill, it is easier and cheaper to make it yourself from materials found in a garage or scrap metal collection point.

Description of the vibrator for the hammer drill

A vibrator is a specific device used during construction work using cement mortars. It improves the quality of the pour: it compacts the structure of the future structure, eliminates air gaps in it, removes excess moisture, and slightly speeds up the construction of buildings. This means it reduces construction costs.

When pouring concrete, the mixture is saturated with air, especially if there is not enough liquid in it. A mass of air-filled voids is formed inside the composition, which reduces the strength and other characteristics of the material and its service life.

If a vibrator was not found at a construction site a decade or two ago, it was replaced by the manual bayonet method. Workers used improvised means, such as fittings and pipes, to bayonet the solution. This approach is very costly and ineffective. It is more advisable to use electric traction. At any construction site there is a hammer drill from which you can make a vibrator for concrete in ten minutes.

The vibrating tip is represented by an attachment for a hammer drill:

• The deep concrete vibrating tip is attached to the motor of a rotary hammer or drill through a flexible shaft and vibrates at high frequency and low amplitude, spreading vibration through the concrete.
• The surface vibrator for concrete is inserted into the chuck like a drill. The hammer drill operates in impact mode - it transmits mechanical vibrations from the impact mechanism to the formwork with concrete.

The principle of operation is to destroy the bonds between the molecules of the concrete solution, as a result of which air bubbles filling the voids are removed. Excess moisture, being lighter than the other components of the mixture, rises to the top.

The device gives concrete the required degree of density and fluidity, improves its mechanical and operational properties, and promotes uniform filling of voids with the mixture.

Vibrator tasks

Regardless of the design and scope of application, a vibrator for concrete compaction must solve a number of problems for the builder:

1. Increasing the strength of a structure by removing excess moisture and air bubbles from the mixture.
2. Extending the service life of the structure.
3. Making concrete homogeneous.
4. Uniform filling of the formwork with mortar.
5. Increasing the service life of reinforced concrete structures.

Additionally, the vibrating tip eliminates the need for layer-by-layer pouring of mortar, which speeds up the process of constructing reinforced concrete and concrete structures.

Types and design of vibrators

According to the method of transmitting mechanical vibrations - vibrations - to the mixture, concrete vibrators are divided into:

• Deep - the working part of the vibrating tip for the hammer drill is lowered into liquid concrete.
• Submersible - used for pouring walls, pillars - mounted vertically on formwork when working outdoors.
• Surface – compact horizontally poured concrete.

Assembled device
Structurally, a deep concrete vibrator is represented by an attachment or a vibrating tip connected to a hammer drill. Consists of four fundamental components:

1. The drive that powers the vibration device is the power unit of the hammer drill.
2. Flexible shaft.
3. Protection made of durable rubber or other polymer material with similar properties.
4. The tip, represented by a vibrating mace.

The last component has a mechanical effect on the cement mortar.

Also, according to their design, vibrating tips are divided into:

• Pendulum - the mechanism inside performs post-swimming and return movements with small amplitude.
• Eccentric - vibration is generated by a rotating shaft with an offset center.

Difference in design

Structure of a deep vibrator

A homemade deep concrete vibrator, made from a hammer drill, consists of the following components.

1. Flexible transmission shaft up to several meters long, depending on the need and the power of the electric motor.
2. Durable rubber seals installed between the hose with the cartridge and the mace - tip.
3. The vibrating part can be cylindrical or conical - it tapers from the beginning, which is located at the hammer drill, to the end. The second form of vibrating attachment is used when working with a solution of increased density.
4. The body is represented by a piece of stainless tube with bearings inside.
5. A shaft with a displaced center of gravity is installed on the bearings, which generates the necessary mechanical vibrations. Their frequency depends on the design of the device and the rotation speed of the electric motor of the hammer drill.

A submersible vibrator from a rotary hammer operates at a frequency of 10,000 to 20,000 rpm; its shaft is reliably protected on top by a polymer material that does not allow water to pass through, for example, a rubber hose.

Miniature vibrating tips can be operated by one person; if the shaft is more than 1-2 meters long, an assistant is involved in the work.

Assembling a vibrator with your own hands from a drill

If you need an internal vibrator, you can simply assemble it from an electric drill.

Before making a homemade vibrator for concrete, you need to understand what the operating principle of the device is based on.

An ordinary drill can be found in almost every home. The main driving force of such a device will be the transformation of rotational motion into oscillatory motion.

The main driving force of the device will be the most ordinary drill

Selecting material for vibrator assembly

To assemble such a device from a drill, any tool with a power of 1 kW or more is suitable. You will need an eccentric nozzle and a durable stainless steel tip. In addition, the following must be available:

• stainless steel tube 55 cm long and Ø 4 cm;
• metal rod Ø 15 mm;
• a piece of rectangular metal rod;
• two high-quality bearings and a bushing;
• bendable reinforced hose with waterproofing or durable rubber tube;
• internal rod for the tube (you can take the speedometer cable).

The mass of the eccentric creates a force that causes the attachment to oscillate at a certain frequency

Assembly tools

To assemble a vibrator you need to have a set of the following tools:

• set of metal drills;
• electric or gas welding;
• hacksaw;
• rectangular rod.

Stages of manufacturing a deep vibrator

The structure is assembled in the following order:

We select a stainless steel tube about 40–60 cm long and Ø 3–4 cm. To construct the internal rod, you need to take a metal rod Ø 12–15 mm. It will shift the entire mechanism system in a certain direction and provide vibration vibrations. Since concrete is a very aggressive environment, stainless steel is the only suitable metal for making a vibrator.

A metal rod is used to make the internal axis

Bearings will allow the center piece to rotate freely

Bearings must be installed only of high quality

The quality of protection affects the durability of the vibrator

To make the job easier, you can use a cable from the car's speedometer

The hose must be tightly protected with a clamp

An electric drill is the optimal tool if you need to make a submersible concrete vibrator

Video: how to make a deep vibrator from a drill at home

How to make a deep vibrator from a hammer drill

With a competent approach and the availability of primitive plumbing skills and tools, there will be no problem in creating an internal vibrator from a household hammer drill. The use of a construction power tool motor is determined by a couple of factors. Firstly, it is a powerful, reliable motor that can handle the load lightly. Secondly, the motor generates high-frequency shocks that cause vibrations with a frequency of up to 5000-10000 beats/min.

A flexible transmission shaft of a vibrator for compacting concrete can be purchased and made with your own hands from steel wire - knitting. It will be needed approximately 3.5 times longer than the length of the shaft itself.

To make a deep mechanism, you will need the following tools and materials:

1. shaft 30-50 cm long;
2. a pair of bearings with an internal diameter corresponding to the diameter of the shaft - it can be machined;
3. the third bearing is smaller in diameter than on the shaft - the seat for it is machined;
4. bench vise, hammer;
5. welding inverter, grinder with a metal disc;
6. a piece of durable hose;
7. steel wire.

The simplest vibrator for concrete from a hammer drill can be made with your own hands from:

• SDS+ shank, cut from a worn or broken drill;
• a piece of metal plate ~3-5 mm thick.

The shaft is turned on a lathe or using a grinder. One end is machined to the thickness of the inner diameter of the bearing. The second one can be made even thinner or left untouched.

• A pair of bearings is pressed onto the shaft at a distance of at least 10 cm from its edges.

Shaft turning

• A smaller bearing is pressed onto the thicker machined end.

Pressing on the bearing

• A hole with a diameter corresponding to the thickness of the cable is drilled at the end of the opposite end of the shaft, and it is inserted into the hole. The cable can be carefully welded.

Cable insert

• The shaft of the vibrating tip for concrete is clamped with a vice, and part of the material is removed from it to shift the center of gravity - it will begin to vibrate when rotated.

Center of gravity shifts

• The end where the bearing is pressed is flared so that it does not fly off during operation of a self-made concrete vibrator.

On a note! Alternatively, a thick plate or rod is welded to the thin rod to shift the center of gravity instead of cutting out part of the shaft.

• The remaining bearings are held in place by punching the shaft around the inner ring.
• Steel wire is wound around a metal rod to give it the shape of a spring.

Creating a Flexible Shaft

• The rod is removed from the spring.

• The spring is inserted into a rubber hose or sleeve. It should fit effortlessly, with little play.

Dressing protection

• A rubber hose is put on the thin end of the metal shaft and tightened with a clamp or pair.

Fixing the connection

• The vibrating shaft is placed in a metal pipe casing. It is tightly welded on one side, and a cable wound like a spring is connected to the vibrator shaft on the other to compact the concrete.

Its end is clamped into the jaw chuck of a drill or the toothed chuck of a hammer drill. If necessary, an SDS+ shank is welded to the end of the cable to quickly connect the vibration mechanism to the hammer drill chuck without adapters.

Making a device from a drill

To make your own vibrator at home, you should find an old drill on the farm. You will need to turn the rotation into an oscillatory movement. Let us examine in more detail the principle of manufacturing the device.

Selecting the materials required for self-assembly of the vibrator

To obtain a vibrator, it is quite enough to use a drill, but its power should not be less than 1 kW. At the same time, you need to prepare a durable tip made of stainless steel, an eccentric nozzle and some other parts:

• metal rod;
• tube (preferably stainless steel);
• bronze bushing;
• a pair of bearings;
• square rod;
• reinforced hose;
• speedometer cable

Tools and materials

To facilitate the manufacturing procedure, you need to stock up on the following tools:

Assembly sequence

The structure must be assembled according to a strictly defined scheme. First you need to take a stainless steel tube. Its length is 60 cm with a diameter of 4 cm. To obtain an internal rod, a good option would be a metal rod that can move sideways in the tube to create vibration. The prepared parts must be combined: drill a hole at one end of the rod to attach it to the device.

Two bearings will ensure that there is no friction between the rod and the tube. The rod itself is threaded into the tube, driving the bearings along its ends until they stop. These supports will be subject to serious load, which is why it is necessary to select the highest quality bearings. A sleeve is put on the second end of the rod so that it tightly covers the inner space of the tube.

Figure 3. Homemade vibrator for concrete

Manufacturing stages

Let's consider a step-by-step scheme for manufacturing a vibrating nozzle, since it is the main element of the entire device:

• first you need to cut a round steel rod in half with a grinder;
• then the resulting sections need to be welded on different sides of the rectangular rod;
• to ensure unhindered rotation, it is necessary to install rolling bearings at the ends of round bars;
• thread the resulting structure into a metal tube;
• Use a grinder to cut the round rod flush with the pipe on either side;
• cut out a cover from a metal plate that completely covers the working end of the resulting tip, and then weld it to it;
• drill in the round rod extending outward from the tip a pair of holes necessary for connection with the shaft (the first along the central axis to a small depth of about 1.5 cm, the other, with a diameter of approximately 4 mm, strictly perpendicular to the first, placing it 7 mm further than the edge rod);
• in the axial hole it is necessary to cut the thread necessary to screw in the clamping screw;
• place the flexible speedometer cable inside the reinforced hose, having previously lubricated it with grease, leaving about 5 cm of outlet on the sides;
• connect the vibrating tip securely to the shaft;
• Pull the hose onto the vibrating pin and secure it securely with a clamp;
• cut off the protruding end of the shaft, leaving a length sufficient for mounting in the electric drill chuck, so that only the cable rotates, leaving the hose motionless;
• It is necessary to protect the vibrating tip with a plastic casing;
• Connect the tool to the electrical network and finally check the functionality of the home-made device.

Surface vibrator

You can make a surface vibrator for concrete in ten minutes with your own hands. For this, in addition to a hammer drill, you will need the shank of an old drill and a steel plate 3-5 mm thick with dimensions of approximately 40 × 60 mm - the dimensions depend on the power of the electric motor.

A shank about 60 mm long is cut from the drill or purchased separately. It is welded to the center of the plate perpendicularly with strict observance of the right angle.

The simplest model

The surface vibrator is suitable for compacting, improving the physical and performance properties of concrete poured into formwork. The nozzle is inserted into the chuck, applied to the wooden formwork structure, after which the electric motor of the hammer drill is started in impact mode.

Which extender is better, factory or homemade?

Homemade extenders are significantly inferior to their factory counterparts

To better understand which device is better, you should compare the advantages and disadvantages of home-made and factory designs. Naturally, these data are averaged, and therefore they are relative.

As can be seen from the table, most homemade extenders are significantly inferior to their factory counterparts. At the same time, the cost of a budget model of a factory device is not high.

Tips for using a homemade vibrator

Professionals recommend adhering to the following recommendations when using a homemade vibrator for pouring concrete from a hammer drill.

1. The device is immersed vertically in the solution; horizontal movements should not be made.
2. When pouring layer-by-layer, a vibrating tip for concrete from a hammer drill is immersed in each layer to ensure reliable adhesion to the previous one.
3. When pouring layer-by-layer, it is not recommended to keep the device in the solution for a long time - it can delaminate the concrete.
4. The tip should not come into contact with the walls of the formwork or reinforcement included in the structure.

You can make an internal vibrator for concrete with your own hands in a few hours from raw materials purchased for a hundred rubles at a metal collection point. It can work with both a drill and a hammer drill. A surface vibrator for concrete is made in five minutes from a piece of metal and a drill shank; it only works in impact mode on a hammer drill.

Typical mistakes in the manufacture of extenders

A homemade extender is much heavier than a factory one

Many men who decide to make such a device with their own hands subsequently find themselves disappointed in their homemade designs and purchase factory-made analogues. Why is this happening? This is due to errors made during manufacturing. Most often we are talking about the following:

1. Errors. The factory extender is the product of careful calculations and numerous tests. In everyday conditions, without the proper knowledge and equipment, it is impossible to develop a truly high-quality design. At the same time, most home craftsmen do not even think about the nuances of making such products. But here you need to take into account both the pressing force of the head and the degree of tension of the device, choosing the most suitable materials for it.
2. Use of low-quality materials. The majority of extenders for enlarging the male organ are made with your own hands using improvised means that have little to do with the medical field. Most often, these are construction fittings, which are heavy, bulky and absolutely not intended for contact with the body. It is poor quality materials that are the most common cause of itching, redness and soreness.
3. Considerable weight. As a rule, a home-made extender is a heavy structure, the appearance of which indicates a carpentry purpose rather than being used as a penis enlarger. Most often, after just a few days of wearing such products, the discomfort becomes unbearable, and the man has to stop using such a device.

An extender for penis enlargement is not a complex design. However, its production requires compliance with a number of nuances, which is almost impossible to repeat in everyday conditions. Therefore, you should think several times about the advisability of making such structures yourself, and if a man nevertheless decides to take such a step, then he needs to approach the matter with the utmost seriousness.