Do-it-yourself pipe bender: step-by-step instructions describing a diagram for building a simple structure for bending a profile pipe

Sooner or later, every car enthusiast is faced with the need to replace tires. In some cases, bald tires can still serve, but for this you need to apply a new tread to it. This is done using a special tool called a regrower. You can buy it at any auto store. It has only one problem: high cost. And given the fact that you will have to use it infrequently (once, maximum twice a year), car enthusiasts’ doubts about the advisability of such a purchase become quite understandable. But don’t rush to despair, many car owners make regrovers with their own hands. We will talk about how to make this tool from improvised means in this article.

Device

A bead expander for working with tires of trucks, tractors, special vehicles and other vehicles consists of several main components, listed below:
The operating principle of a bead expander is based on holding the tire on a moving platform in a fixed position. Adjustable grips move its sides to the side, providing free and easy access to the damaged area, thereby fixing it on the carriage.

The tire can rotate as needed in the horizontal and vertical plane, simplifying inspection and repair work. Some bead extenders may be equipped with a special lamp on a flexible arm, which makes it easier to inspect the internal areas of the fixed tire.

The grippers that move the sides apart can be driven by the operator's muscular force (mechanical side spreaders) or by compressed air (pneumatic models).

The use of cheaper mechanical devices is only possible when working with small passenger car tires.

There are also bead extenders with hydraulically driven grippers, but for a number of reasons this design has not become widespread in the tire fitting business.

Some bead expanders are intended for the repair and inspection of tires on motorcycles, cars and small trucks; separate models are produced for the repair of large tires on trucks and special vehicles.

By type of installation and application, side expanders can be classified as follows:

What is a dredge?

Dredges are special machines designed to work with different types of soil. The main functioning element of such installations can be either a multi-bucket in-line mechanism or a suction hose (if the rock is loose). The scooping mechanism is adjusted by a staff of 10 people.

Simply put, this unit acts as an attachment that can be installed on a floating platform or ground transport, and is somewhat reminiscent of a conveyor. Only instead of a tape, movable scooping devices are attached to the frame. They are the ones who scoop out gold-bearing ore from a quarry or from the bottom of seas, oceans, rivers, etc. Subsequently, the extracted conglomerate containing the required element is transported for processing. Below is a photo of the car itself.

Purpose and functions

Structurally, the beads of all tires taper inward in radius. After removing the tire from the rim, the beads bend inward even more.

When repairing a damaged tire, it is necessary to provide access to its interior, first to inspect and search for the damaged area, and then for repair work, but the beads of the tire, bent inward, prevent these actions from being performed.

To solve this problem, side expanders were created.

The grippers, operated by the operator manually, pneumatically or hydraulically, extend the beads laterally to provide easy access to the inside of the tire.

The bead expander performs a number of functions:

Operating principle of the dredge

Dredge equipment, regardless of whether it is a pump or a bucket, is designed for one purpose - the extraction of ore containing valuable minerals and its transportation to the destination, that is, to the place where the mined material is either processed or immediately washed (as in the case with gold).

For example, a bucket dredge most often simply dumps the mined conglomerate into a heap, but a floating pumping station immediately washes and collects pure gold, throwing unnecessary debris to the bottom. But the principle is the same - extract, transport and sift.

Types of pipe benders

These mechanisms are designed for bending various rolled products, pipes and rods without destroying their cross-sectional structure.

Mechanical manual. Designed for deformation of various small-sized profiles, mainly made of soft metals.

Hydraulic. Mainly of the crossbow type, they are used to give the yoke profiles a curvilinear shape in a specific location.

With ratchet mechanism. Human physical energy is also used at the same time. fixation of the bending value is achieved after each movement of the lever.

Electrically driven. Makes work easier, but the financial costs are much higher.

Jack pipe bender

To make it you will need:

4 corners are fixed vertically by welding on the frame. Holes are drilled in each channel for the bolts holding the rollers. 2 corners should be welded to each channel.

Maintaining symmetry, the rollers are placed between the channels and secured with bolts. A segment attachment is installed on the jack rod and placed between the channels.

The amount of deformation of pipes and profiles can be changed by increasing the distance between the channels and rollers.

During operation, the bendable profile is placed under the rollers and, using the movement of the jack rod, is pressed with a segment attachment.

Precautionary measures

• The main disadvantage of homemade regulators is that their heat cannot be adjusted. This means they are very fire hazardous. In case of obvious overheating of the blade, the regrower should be turned off immediately and cooled down.
• In addition, there is a risk of electric shock (this is especially true for burner regrovers). In the example above, the bolts to which current is supplied are not insulated in any way (it is impossible to insulate them in principle, since any insulation will simply burn due to heating). So you should work extremely carefully.

The best mechanical bead expanders

In such devices, after adjusting the length and installation angle of the grip, the sides are expanded manually using the lever principle.

Such a drive can only be used to work with tires of cars and small trucks, with compact dimensions, the expansion of the sides of which requires only the operator’s muscular strength.

NordbergD1 is the leader of the rating due to its versatility. This is a stationary mechanical device that has its own base frame with a height of 800 mm. D1 is suitable for use on the most common vehicle types, from motorcycles to small trucks.

Thanks to its compact dimensions, the D1 can be installed in almost any room, except the smallest garages. The tire is easily fixed in a comfortable position using the pedal control.

The base on which the working platform (rotary table) is mounted is equipped with a hinge that allows circular movement for easy inspection and repair of the tire.

Trommelberg TS-M201 is a model that is almost identical to the leader in the rating. It has a slightly higher price, reduced weight and dimensions.

SivikKC-017 is a compact manual model, ideal for a small garage or auto repair shop. Designed for tires of cars, minibuses and crossovers. The advantage of the model is ease of use and small size.

Using a bracket, the KS-017 working platform is mounted on any work table, while maintaining the ability to rotate 3600. Weight of only 6.5 kg and dimensions 550x330 mm make it easy to dismantle the side expander and put it away if you need to free up limited space in a small garage.

Clipper T-510 is a bead expander for installation on a workbench or desktop. Designed for working with passenger tires. The main advantage of the T-510 is its price, the lowest in the rating.

Snail pipe bender

This mechanism is widely used because of its ability to bend a metal profile not in a specific place, but the entire product at once.

How to make a snail-type pipe bender at home without the help of professionals.

For this you will need:

Weld a base consisting of 2 narrow or 1 wide channel. Also, a metal sheet 0.5 cm thick is used to make the base.

Bearings pre-attached to the shafts are welded to the base. Then you should put on the sprockets, tension the chain, and then weld the sprockets.

Cut out the guides of the clamping device and attach them to the base by welding. Place the bearings on the pressure shaft and mount the press. Attach the bushing to the plate by welding, having first made a base for it.

Screw in the clamping screw and weld a gate made from pipes to it. To prevent corrosion, the bearings must be lubricated with oil. Once the pipe bender is assembled, it should be tested for strength and then painted to protect the welds from oxidation.

For ease of use, a spring is attached to the guides, returning the press to its original position.

Work progress

So, you need to start building a dredge for gold mining with a frame for which metal profiles are suitable. It can be of any shape, but it is advisable to make it so that it is easy to install attachments later.

After collection, floating elements (tanks, barrels, hollow pipes) are installed on the created base, which will allow the entire installation to move freely on the surface of the water.

When the main part is ready, you can attach the motor to the frame, and then the pump and compressor to it. Then, accordingly, install pipes - one for collecting water, the second for supplying it under pressure, the third, the most massive, for collecting ore, sand, etc.

The last thing to install is a gateway, which is connected to the main hose, after which the homemade mini dredge is checked. To better understand exactly how it works, you can watch the video.

Extender | Cars and automotive services (Car service)

Department of Automotive Transport and Automotive Service. Subject "Type and operation of garage equipment."

Introduction……………………………………………………………. …………………………3 1. Analysis of existing structures………. …………………………….4 2. Design calculations……………………………. ……………………………10 2.1.1 Calculation of a vertical beam………………………….……………….10 2.1.2 Calculation of a longitudinal beam……………… ……………………………….10 2.1.3 Calculation of the transverse beam of the frame……………………………………10 2.1.4 Calculation of the central pin……………… …………………………….11 2.1.5 Calculation of the wheel pin…………………………………….…………13 3. Design and assembly procedure……… ..………………………………….….16 4. Description of the developed design……………………………17 4.1 Design and operation of the structure……………… …………………………17 4.2 Technical characteristics of the design……………………………..17 Conclusion…………………………………………………………… ………………………18 References………………………………………………………………19 Appendix………………..……… ………………………………………………20

Introduction Road transport is one of the most important and basic elements of any production. More than 50% of the total volume of transportation is partially or completely carried out by road transport. The number of cars is constantly growing. The need for their diagnosis and repair is increasing. Process equipment, i.e. the set of devices, tools, equipment and devices used in the process of technical influences, maintenance, routine repairs and diagnostics of rolling stock of road transport largely determines the technical level of production and the degree of perfection of technological processes of vehicle maintenance and repair. The purpose of this course project is to design and calculate a bead expander for passenger car tires with a diameter of up to 17 inches. The most important technical characteristics of side expanders are: principle of operation and type of drive; Terms of Use; tire diameter; dimensions; price.

Contents: Assembly drawing of the bead expander, Specification, assembly drawing of the assembly unit, specification, plate, main tube, tube, explanatory note

How to check the flushing unit?

Before mining gold, the equipment should be thoroughly checked. The bottom line is to test the gateway for performance, namely, the capture of small particles of gold from the ore. To do this, take some dense metal, for example, lead, and paint it in a bright color. After this, it is poured into a portion of soil and washed.

Thus, the dredge will catch brightly colored metal no worse than gold. If only 2-3 pieces are lost in the process, then the unit can be considered quite serviceable, and in practice it will perform well.

Bead extender at a tire shop. Is it necessary or not?

Any good tire service uses special equipment to ensure high-quality and efficient work. A well-equipped car service makes it possible to repair vehicles, change tires and perform many other types of work.

Let's figure out whether a bead expander is needed for installation or not?

Bead spreaders are special

In addition, such equipment is usually located in a tire workshop and in organizations with their own fleet of vehicles.

To widen the tire beads, the wheel is mounted on a machine that is equipped with special rollers that rotate and lower the gripper inside the tire. Using bead expanders, you can inspect tires and clean them from dirt and dust, sand and polish them, install patches and install an inner tube.

Modern manufacturers produce different types of side expanders.

For example, machines Such machines are portable, tabletop and floor-standing. Extenders, which are equipped with a rotary table with adjustment, a lamp and an air preparation unit, can significantly facilitate the work of the master.

For large equipment used in agriculture and for large trucks, side expanders with equipped hydraulic or pneumatic drives are used. In addition, the machine kit may include a special device that lifts the wheel, a ramp for rolling tires, a lamp, an air preparation unit and a control panel.

Pneumatic type bead spreaders are usually more expensive, but working on such machines is much easier, since the spread of the beads is done by pressing the drive pedal, rather than manually.

You can see high-quality AE&T(c) bead expanders here: https://aet-auto.ru/catalog/vulkanizatory-bortorasshiriteli/bortorasshiriteli

Methods of gold mining in Russia

Gold is considered an expensive, but still not a rare metal. Methods for its extraction from the soil are conventionally divided into mechanical and chemical (when combined with other elements). If we talk about the Russian Federation, the following are recognized as the main ones.

• Amalgamation is based on the special property of mercury to dissolve elements in itself. The rock containing gold is placed in a container with Hg. Over time, these metals combine to form an amalgam, from which the mercury is subsequently evaporated.
• Crystallization using NaCN - this method is very similar to the previous one, only instead of poisonous mercury, the gold-bearing rock is mixed with sodium cyanide, which, when combined with gold, forms yellow crystals.
• The dredge method is the use of a special floating installation (dredge), which collects enriched rock and washes out the precious metal from it.

These are the main methods of industrial gold mining in Russia. In addition to them, manual washing using a sieve is also widespread.

Do-it-yourself bead extender drawings - Construction Portal

Point 1. Making a stock.

Let's take a well-dried wooden block, mine was made of birch, and sketch out a sketch of the bed on it. We customize the size of the butt for each individual (according to your height), and the stock depending on the length of the arrows you will use. I use 440 mm arrows, but I had to save money on the butt, I left only 300 mm, so the total length turned out to be 740 mm, I didn’t dare to do more.

Let's draw a marking for the guide sample, for the arrow fletching, width 5 mm, depth 10 mm.

Using a circular saw, we cut out the groove the entire length, to the end of the trigger (lock).

It should look something like this.

Using a drill D=12 mm. We select a cavity for the trigger, level the ledges with a chisel and knife. We drill a hole for the trigger, bore it with a chisel and knife.

Point 2. Making a lock or trigger device.

Let's take the "walnut" type as the basis for the lock. To prevent anything from rusting, we will use stainless steel, take a sheet 4-5 mm thick, if you can’t find one, make it a composite of several sheets glued together and taken with rivets. Draw the shape of the parts on the metal.

Using a cutting disc and a grinder, we cut out the workpiece according to the markings.

Let's drill a hole for the rotation axis D=6 mm.

We process all sides with a file.

We sand with sandpaper, achieving a completely smooth surface.

It should look something like this.

We grind out the remaining elements of the lock, the sear.

I lengthen the trigger with two thin sheets of stainless steel and secure it with homemade rivets.

Using a sharpening machine we achieve the desired shape of the workpieces.

We make the housing of the trigger mechanism from a thin sheet of metal.

We drill three holes D = 2.5 mm in the body of the sear, one for the fastening axis and two for fastening the springs.

Let's attach the trigger spring into place.

Let's see on the table how the parts become in the cocked state.

And like after the shot.

Let's place one side of the case on the inside of the mechanism and drill holes in place for all the axes.

From a two hundred nail, 6 mm in diameter, we will make an axis for the “nut”.

Saw off the sharp end of the nail.

We measure the length of the future axis and saw it off.

Using thin nails for roofing felt, we will make the remaining rivet axles. Use a grinder to remove the shimmer on the nail heads.

Now they will fit well to the body.

Let's install the sear on the axle in the body, use intermediate washers.

We saw off the excess length of the nail, leaving 1 mm. on both sides for rolling.

Using an anvil, hammer the end of the axle.

We drill a hole for the axle with a spacer to attach the sear spring.

From a suitable tube we cut off a spacer sleeve for this axis.

We move one side of the body to the side.

We install the axle, bushing and engage the spring.

We assemble the body halves together.

We saw off the excess length, leaving a protrusion of 1 mm. under the hammer.

Now you can install the largest rivet axle of the lock. Aligning the holes.

Let's take the previously measured and sawed-off axis D=6 mm, and immediately tap it a little with a hammer on one side.

We install it in place.

And we’ll also roll it, the main thing is not to overdo it, so as not to jam the moving mechanism inside.

Making knives and blades for regrovers

A good knife for a homemade regrower should be thin and sharp. The example above is about a kitchen knife, but for soldering iron regrovers, a paper knife is also quite suitable. Only a razor is suitable for the burner (all because of its low power - the smaller the cross-section of the blade, the faster it will heat up). The main problem that you will have to face is the fragility of the metal. If you try to bend a regular razor into a U shape, it will simply break. The same thing will happen with a utility knife. Therefore, before making reguver blades, razors and knives should be annealed (that is, they should be reduced in brittleness and increased in ductility using a heat treatment called annealing).

Necessary

1. A pair of pliers.
2. Gas-burner.
3. Knife or razor blade.

Step-by-step instruction

1. The blade is held over the fire with pliers until it acquires a barely noticeable reddish tint (it is difficult to notice, so it is better to carry out the procedure in the dark). This will mean that the blade has warmed up to a temperature of about 400 degrees.
2. As soon as the metal has warmed up, you should quickly turn off the burner and allow the blade to cool in the open air for 5-6 minutes.
3. After this treatment, the ductility of the blade will increase and it can be easily bent at the required angle (what angle this will be depends on what shape of groove you plan to cut in the tread, but most often it is a U-shape).
4. Once the blade is bent at the required angle, a flat wooden block of suitable size is placed between its halves and the entire structure is clamped in a vice, after which a hole for the mounting bolt is drilled in the blade (the drill passes through both halves of the blade and the wooden block between them).
5. The second option is also possible: you can do without drilling a hole by simply cutting a U-shaped notch on one side of the knife, as shown in the figure. It is best to cut such recesses using a needle file.

   
   Regruver Knife with U-Notch

Extenders

“Stapel-M” is a device designed to hold inner tubes and tires of passenger cars during the preparatory work.

The rotating mechanism facilitates easy access to the inner area of ​​the tires when inspecting and repairing local damage. The bead extender is used in motor transport enterprises, at car service and repair stations, as well as in tire repair shops. Now you will have easier access to the car tire being processed.

The Efes pneumatic bead expander is perfect for working with hard truck tires.

Manually operated bead expander. The hook can be adjusted. The working platform rotates for good lighting during repairs.

Pneumatically driven bead spreader for tires with section width ≤ 30.5 cm. The hook can be fixed at three different levels and can be adjusted for a precise tire fit. The superior pneumatic leg system allows you to support the load anywhere during work without air leakage for 24 hours. Using the adjustment button, you can set the pressure in the pneumatic system.

How to make a disc harrow with your own hands using a 3D model

Agricultural work cannot be done without the use of a functional harrow. It is impossible to carry out sowing without destroying the top crust of the earth and without digging up the soil to a loose consistency, thereby destroying all the weeds. That is why the presence of a disc harrow in every farm is an urgent need.

You can organize your own production of disc harrows at home if you have a garage, a welding machine and additional tools. Farmers are clients with good solvency. If you make your offer with a lower price but the same quality, then you can easily sell an expensive disc harrow unit. After all, this type of agricultural equipment brings large incomes to farmers.

DIY disc harrow

What does the design of the harrow consist of, which we propose to make with our own hands for use on the MTZ-80 tractor?

Homemade helicopter from a snowmobile

We must pay tribute to the inventor - he created a working structure from scrap materials. Such inventors should be united in a design bureau to revive small aircraft. The helicopter was manufactured in 1979 in the city of Cherkassy. The entire structure is homemade, except for the engine. Parts from different techniques, wooden screw. Engine from the snowmobile “Buran”. Flies at speeds of up to 150 km per hour. It was tested at an altitude of 8-10 meters, but theoretically it can fly higher.

Products for inventors. Autumn discounts up to 60%