Differential for a tiller with your own hands

tiller Motor Sich. automatic differential closer.

Homemade automatic differential closer on the Motor Sich tiller

diameter of the bar. 10 mm.

bar length. 230 mm.

spring length. 105 mm.

the distance between the holes for the cotter pins. 220 mm.

distance between welded nuts. 95 mm.

standard nuts, width. 10 mm.

Craftsman43.RU

DIFFERENTIAL IN THE WHEEL

Having taken up the creation of small-sized agricultural machinery. this reliable assistant on a personal plot and in a subsidiary farm, many DIY lovers prefer kinematic schemes, an integral part of which is the differential. As a rule, factory-made: from a car or from a motorized carriage. But such differentials inevitably lead to the complexity and weight of the entire structure. To squeeze this, often rather cumbersome, unit into a mini-tractor or, say, a tiller, you have to work hard on all sorts of improvements. And wheel locking, so desirable, becomes impossible.

A longtime subscriber and admirer of “MK”, an amateur designer of agricultural machinery V. Staroverov from Nizhny Novgorod developed an original design of a “differential in a wheel”. The technical solution proposed by him is based on the well-known principle of the freewheel clutch. But it is made in such a way that, being installed in the driving wheels of mini-equipment (in this case, the Tiller “Pchelka”), it makes it easy to block the wheels. A large set of interchangeable trailed and mounted implements makes the tiller a truly versatile agricultural machine.

“As far as I know, tiller designs most often use a two-wheeled arrangement. Providing the machine with sufficient stability and maneuverability, it can be easily combined with a wide range of interchangeable trailed and mounted agricultural implements. And complete with a cargo trolley it becomes a kind of mini-tractor. I chose this layout.

The required power-to-weight ratio was provided by the engine from the “Vyatka” scooter (you can also use the “Electron”). Possessing (even before revision!) A capacity of 7.5 liters. from. it also has a built-in three-stage gearbox and forced air cooling, which is so necessary for power plants of small-sized equipment, operating, as a rule, in heavy load and thermal conditions.

(see the kinematic diagram of the transmission) with a worm gear “. says V. Staroverov.

The choice of the latter is by no means accidental. Indeed, it is with such a gear ratio that the tiller with the indicated engine and arable wheels with a diameter of 570 mm is capable of plowing the land at an optimal speed of 3.5 km / h. It is undesirable to have a lower plowing speed: the engine is not loaded enough, the agricultural machine is unstable, there is clearly not enough inertia to easily overcome the unevenness of the soil. And at 4-5 km / h and above, wheel slip increases due to excessive swinging of the tiller.

The gearbox from the decommissioned conveyor came here in the best way, becoming the power part of the frame structure. over, its fastening organically fit into the general scheme of the tiller, almost all the nodes of which are bolted. Namely, this, according to the plan, just allows you to carry out a complete assembly and adjustment of the machine at home.

An engine is attached to the spars of the gearbox-frame in front, and a homemade muffler on the left. A fuel tank is mounted on top of the brackets. Fuel from it enters the carburetor by gravity. Behind the gearbox-frame are attached control knobs, made, as in many other home-made designs of tillers (see, for example, “M-K” No. 1 for 1985), of two steel pipes with a crossbar and jibs. Handles diameter 32 mm. Crossbeam and jibs. also made of pipes, but of a smaller diameter.

The arrangement of handles and control levers is typical for motor vehicles. The right rotary knob is connected to the carburetor throttle and the left lever is connected to the engine clutch. On the right side, the gearshift lever is mounted, which has three fixed positions, and the stops for the cable sheaths.

The “highlight” in the design of this tiller is a technical solution, which the neighbors (also, by the way, avid DIYers) immediately dubbed as “a differential in a wheel.” It is more correct to call this innovation the system of automatic locking of wheels (SAB). over, in this case, the “suspended” differential (see “MK” No. 3 for 1988), to which the omniscient neighbors referred, cannot serve as a prototype in this case. And the technical solution I have implemented in the “Pchelka” tiller is two overrunning clutches of an original design made of a piece of spring, compression spring, crank and leash for turning on and off the entire mechanism located in the wheel. precisely. inside the brake drum, on the working surface of which the risks-hooks are made with an interval of 20-26 mm and a depth of 2-3 mm. The illustration shows a more complicated option, when, for greater reliability, the overrunning clutch has two such “ratchets”.

The SAB works as follows. When the “ratchet mechanisms” are in the “on” position, the stops are in engagement with their brake drums. Therefore, the torque from the engine is transmitted simultaneously to both wheels. This is when the tiller is moving on a flat, straight section. But, as soon as the turn begins, the wheel moving along a trajectory with a large turning radius is disconnected from the transmission. it is automatically locked. And as soon as the angular velocities of the wheels equalize, the torque will again be transmitted simultaneously to both wheels. This is done automatically!

A similar picture is obtained while driving on an uneven area, when overcoming potholes, potholes and other “obstacles”, which are not such for “Pchelka”. the universal tiller V. Staroverov. in fact, are not. over, the presence in the SAB kinematics of steered cranks equipped with leashes allows you to either block any of the driving wheels or even disconnect both wheels from the transmission (for example, when rolling the tiller in the garage) by simply turning the corresponding levers of the cranks. (I must say that all this “Pchelka” compares favorably with other developments of home-made means of small mechanization available in the editorial portfolio, in which the transmission of torque to the drive wheels is also performed using the “overrunning clutch principle”.

This also refers to the tiller V. Kaloshin from Zheleznogorsk-Ilimsky, Irkutsk Region, in whose kinematics the couplings 40-50 GOST 12935-76 produced for agricultural machines and V. Fedotov’s motorcycle assistant from Vichuga, Ivanovo Region are used, where “multi-toothed movable bushings” are used on both wheels. “, And a construction published in” MK “No. 3 for 1986, the authors of which are members of the circle” Young technician “SPTU No. 25 from the city of Kelmentsy, Chernivtsi region. )

Another feature of the proposed SAB: this system fits perfectly into the kinematics of small-scale mechanization means that have a reverse gear (in the “Pchelka”, according to V. Staroverov himself, such a mode of operation would be perceived as “architectural excess”). It is only necessary to arrange the “ratchets” in the wheel towards each other (in the illustrations, this embodiment of the SAB is not shown).

As already noted, the wheels under consideration are from the GAZ-69 car. Even seemingly completely unusable, worn-out tires will do: after all, the Pchelka’s speed is relatively low. But, of course, better. with a new tread, which can also be used for plowing on light soils. For plowing on medium to heavy soils, homemade plow wheels made from scrap materials are used. Installing them in place of transport does not take much time due to the “automobile” method of attachment to the hub.

The plow wheel structure is all-metal welded. Disk. from GAZ-69. And the rim consists of four removable sides of the wheel rim of the ZIL-130 car welded together. Spokes made of steel strips with a cross section of 30X5 mm go to it from the disc on both sides. Grousers are welded to the rim. Also. from scraps of steel strips (but already with a section of 26X5 mm), bent in the form of a corner with equal (50 mm each) shelves. They are welded in a “checkerboard” pattern, and a chain from the hoist drive is passed through the formed triangular holes. for better grip with the soil Another option has been tested: when the lugs are made of a 35X35 mm corner welded to the rim with a “herringbone” pattern. No particular advantages of this option in comparison with the first were found in the work. Unless there is less land in the wheels. You can use other lug designs, including those published on the pages of “M-K” (see, for example, No. 1/85, 1/86, etc.).

The trailer is essentially not much different from the one shown in the sixth issue of the magazine in 1990. This is also a cart on a tubular frame with body dimensions 1.5X1.3X0.3 m. Its carrying capacity is about a ton. A power hinge with three degrees of freedom is used for docking with the tiller.

The plow in its configuration is very similar to the design published in No. 5 of the magazine for this year. But there is no field board here. And the required profile withstands a 4-mm thick blade, bent (according to the mowing line a, see illustration) from Steel 45, or better. from ploughshare Steel L45 L50 (it is also possible from bearing Steel ShKh15 as M-K wrote about it in No. 5 for 1991 year).

Plow attachment, like other agricultural implements. similar to the design published in 1984 magazine # 4. Cultivator and other mounted (trailed) implements. from decommissioned agricultural machinery. Their implementation is quite feasible in the “home” conditions, if you focus on the articles in No. 7/81, 2/86, 4/90 and other publications “MK”. In particular, the design of the potato digger is detailed in the second issue of the magazine for 1986, and the bulldozer blade. in the fourth issue of the last year.

N. KOCHETOV, our special. corr. Nizhny Novgorod

TILLER TECHNICAL DATA

Length (rods of control sticks are parallel to the ground), mm. 1500

Simple self-made agricultural constructions

How to make a differential with your own hands? The easiest way to construct a homemade differential is as follows. A bushing must be attached to the motoblock axle, which has a transverse slot. A short axle must be placed inside the bushing, and you can fix it from falling out using bolts inserted into the “body” of the bushing through the slot. The wheel itself is fixed on the axial side.

During the operation of the motoblock device, the drive axle rotates the bushing without difficulty until the reverse slotted side sticks into the bolt.

When turning the wheel, the wheel, trying to “get ahead” of the drive, pushes the bolt forward along the hole. Thus, the transmission of the shifting element is “broken”. The angle of easy turning of agricultural machinery depends on the slotted length. This lengthening mechanism is very simple. It is quite capable of making it by a turner of the level of a junior specialist. This is why these extension cords are so popular and relatively inexpensive. As a rule, they are made with a couple of holes. Due to this, the track width can be varied and the drive axle can be connected to the wheel.

General recommendations

Here are some tips for farmers on how to put together a great homemade tiller differential:

The gap between the extension axle and the bushing cannot remain too small. If a corrosive process begins, they will “stick” to each other;
To lubricate the agricultural device without preliminary disassembly, it is a good idea to place a grease nipple on the bushing;
Extensions can be constructed from low carbon steel. The unit will turn out to be strong, reliable, at the same time, quite inexpensive in terms of cost.

Blueprints

To independently assemble a differential for a tiller with your own hands, you will need drawings. Fortunately, on the Internet there are a large number of diagrams and pictures of how to make a differential for a tiller with your own hands.

As a rule, experience shows that all home-made differentials for the tiller assembled according to the drawings have a small possible angle of free wheel rotation (up to 250 degrees), since the transverse groove seriously reduces the power of such an agricultural device. Also, homemade differentials on the tiller have more frictional force, especially if dirt gets inside the hub. Therefore, do-it-yourself differentials for a tiller are usually used for lighter motoblock models, such as the “Neva”.

Differential for a tiller with your own hands

The differential allows for a shorter turning radius and a wider wheel track. Due to this, motoblock equipment becomes more mobile in operation.

It eliminates the possibility that it unexpectedly overturns at a turn. The differential allows one of the wheels to be locked, due to which the independent wheel movement provides smoother turns. Without the use of physical force, the turn increases to 240 degrees. Thus, due to this agricultural device, the walk-behind tractor can make any turns at the end of the bed easily and quickly.

In this article, we will talk in detail about how to design a differential for a tiller with our own hands, we will talk about all the advantages and disadvantages of homemade products.

Such a homemade product, like a differential for a tiller with your own hands, is not a particularly difficult technical task. The experience of many gardeners who managed to make differentials with their own hands for a tiller clearly proves this. Its manual adaptation quickly pays for itself and serves perfectly in gardening work.

What is needed for manufacturing

When planning to make this element yourself, you will need to make sure you have the necessary parts and tools. The main material for turning the differential parts is steel blanks that do not have wear, which will ensure a long service life of the element.

Considering the tool necessary for the successful assembly of the unit, it should be noted that their exact list depends on the type of device being manufactured. In most cases, a drill and cutting tools will be enough for a master, however, for more complex structures, a lathe may be required.

Types of mechanisms

There are several types of control mechanisms used in various models of tillers. They differ significantly in their performance and have their own advantages and disadvantages. Most often, the unit can be equipped with the following units:

a rigid drive, which provides for an even distribution of power to a pair of wheels, which is most often used on two-axle modifications;
an overrunning clutch, characterized by a simple design, capable of increasing the torque 1 of the driving wheel by means of a more active rotation of the axle;
classic gear-type differential that allows you to distribute the load between the axles when turning in reverse proportion.

The last type, which seems to be the most effective, deserves special explanation. a tiller with a differential lock is able to increase the torque on one side and significantly reduce it on the other when cornering, which allows you to successfully maneuver.

Differential for a tiller with your own hands

Tillers from various manufacturers are commonly used to cultivate small plots of land, which allows farmers to significantly reduce labor costs. An important design element of such devices is the differential used for power distribution. You can make a differential for a tiller with your own hands, subject to the availability of the necessary parts and tools.

Differential making

Differential and disc clutch tillers are in great demand from farmers due to their many advantages. When planning to equip a product with this element or replace a damaged analogue, you can make it yourself.

You will need to decide on the type of distribution mechanism, as well as choose a suitable drawing of the part, which will be used throughout the assembly in order to avoid mistakes. It is extremely important to first adapt it to the used tiller model, which will ensure the correct operation of the element. Assembly will require fasteners, as well as a powerful drill.

Differential need

Before considering the process of self-assembly of this element, it is advisable to find out why tillers with a power take-off shaft with a differential use it. Its main purpose is the correct adjustment of the unit’s wheels. When making a turn about the axis, such an element allows you to prevent slipping, and also allows you to avoid overloading one of the sides during such maneuvers. This contributes to an increase in the service life of the suspension, due to which it is possible to make its repairs much less often.

The design of such an element may seem quite complicated, however, with minimal knowledge, a drawing-diagram of the product, materials and tools, the master will be able to assemble a homemade differential for the tiller without any problems.

Procedure

a tiller with a reduced gear and differential has many advantages over analogues that do not have such elements, and therefore it is advisable to make them yourself. After making sure that you have everything you need to create a differential, you must adhere to the simplest algorithm of actions:

Fasten a bushing with a transverse slot on the tiller axis.
Place a short axis inside the installed element.
Fix it with fasteners to avoid falling out.
Install the wheel on an axle base.

Thanks to such an element, the implement wheel when turning will successfully rotate the bushing until the slotted side of the bushing and the bolt are aligned, which makes it possible to distribute the load on the wheelbase much more evenly.

It must be remembered that self-made elements are somewhat different from factory counterparts in their operational characteristics. Their angle of free rotation is much smaller, which somewhat reduces the efficiency of the differential.

Due to the intense friction in the area of the bushing, which can be caused by the presence of dirt in the moving parts of the mechanism, homemade parts much more often require repair or replacement.

Self-production, installation of a differential on Tillers of various manufacturers seems to be a rather simple task that can be dealt with if you have the necessary materials and tools. To do this, you just need to decide on the type of element and follow the instructions.

Differential and hub for tiller: functions, types, self-production

Tiller is a very useful and multifunctional technique that greatly simplifies the life and work of its owners. For an even more productive and economical use of its power resources, many attachments and attachments have been created. These attachments also include a differential and a hub. We will tell you about their main functions, capabilities and self-production of such parts in this article.

Tiller Differential Designs and Purpose

The main purpose of the tiller differential is a more even distribution of power between the wheels of the tiller. The differential will be especially useful when cornering. It usually takes a lot of effort to deploy the tiller, especially if the vehicle is equipped with lugs and attachments. The differential allows for easy turning due to faster wheel rotation. Thanks to him, the wheels have a faster rotation than that which occurs only thanks to the axle.

Differentials have their own design features and differences for different models of chillers. For example, for light Neva tillers, differentials are used that have a small wheel angle (240 °). Also, due to the transverse groove, it has a low strength, there is strong friction of parts inside the mechanism.

Tillers of the Salut company are equipped with differentials of a more complex design. They are distinguished by a greater mass and a wheel turning angle (about 330 °). The extension has bearings to reduce turning effort.

For Farmer brand tillers, the differentials consist of two clutches, and the control is carried out using the levers on the steering wheel.

How to make a differential on a tiller with your own hands?

To avoid unnecessary financial costs, you can make a homemade differential. This process is simple, and the availability of free access to drawings and a variety of materials further simplify the task. The manufacturing process looks like this:

using a lathe, a part is turned according to the drawings;
a flange is machined and carefully welded to a part of a metal pipe;
for the manufacture of the differential, use only high-quality steel blanks, since this part is subject to high loads.

Characteristics and varieties of hubs for tiller

Tiller hub is needed to fit pneumatic wheels or steel lugs.

Tiller wheel hubs are of 3 main types:

differential hub with unlocking;
semi-differential hub (simplified version of the previous one);
common hub.

The differential hub for the tiller is considered a universal part and is needed in cases where the tiller is not equipped with a wheel unlocking system, and turning the equipment causes difficulties. The bearing hub greatly facilitates handling and improves maneuverability. To perform a U-turn, you just need to unlock the lock of the desired wheel.

According to the diameter of the hub, they are classified into:

hex (24 and 32 mm);
round.

Self-production of a hub for a tiller

As already mentioned, there are different versions of the hubs for the tiller. For the manufacture of the simplest option, you can use the following drawing: The main thing to remember when making your own is to observe safety precautions and use high-quality materials for a longer service life of the part.

We also suggest that you familiarize yourself with a detailed video, which tells about the intricacies of making a homemade hub for a tiller:

Tiller wheel hub: current views

At the moment on the market you can find:

ordinary devices;
differential hubs.

over, the last element is in the greatest demand, since it is considered universal. The hubs are necessary if the motoblock machines are not supplemented with a wheel unlocking function, and the turning / turning procedure itself is rather problematic. With the tiller differential, you can literally turn one full turn, which increases the level of maneuverability. It blocks one wheel, so independent wheel movement creates conditions for measured turns. Even without human intervention and the use of physical force, at the end of the row, the unit can quickly turn 240 degrees and continue its work. Often, cultivators are standardly equipped with the specified parts, but it is rather inconvenient to remove them every time during operation, so it is advisable to immediately purchase another pair. This stroke will save operator time and reduce pressure on base elements.

As for the classification by diameter, here are presented:

hex;
round.

over, the hexagonal ones are presented in two versions: 24 and 32 mm.

Differential and hub for tiller

Tiller can rightfully be called a unique device that greatly simplifies the life of farmers and owners of small land plots. Thanks to special attachments, the level of functionality can be significantly increased, therefore, specialized manufacturers are trying to delight owners of technical devices with improved offers. One of the most important elements that guarantee productive and comfortable operation of the cultivator is the tiller hub, which allows the device to be supplemented with metal lugs or pneumatic wheels. Thanks to these details, a more productive hilling, plowing of the land, harvesting and planting of potatoes occurs.

How to make a differential on a tiller with your own hands?

Since the mentioned parts are an important part of motorcycle equipment, you cannot do without them. Some owners of agricultural machines prefer buying factory-made products, while many are trying to create semi-differentials and classic hubs at home without much financial expense. Oddly enough, but due to the low level of complexity, the availability of consumables, tools and understandable drawings, this option is very popular. The procedure for creating a homemade differential is simple:

It is necessary to grind the unit out of a metal blank (using a lathe);
It is not excluded the possibility of grinding the flange and carefully welding it to a part of the pipe made of metal;
The milling process must be carried out based on the data in the drawing;
Only high-grade steel should be used as a material, because it is constantly under pressure and must have increased durability.

Often, self-taught craftsmen use parts from cars, and they do it very successfully. As shown in the following video, the user was able to correctly adapt the hubs with differentials from the Zhiguli car and significantly improve the existing tiller Neva MB2.

How to make a differential for a tiller with your own hands

Motor-cultivators have recently been in great demand among agricultural workers. As for the tiller differential, it is an integral part of the vehicle’s drive train. It is an element with several wheels that are located on the same axle. Despite the fact that initially this part may seem quite complicated, it is not only easy to fix it, but you can make a differential for the tiller with your own hands. There are many diagrams and drawings that are successfully used by both specialists and beginners in this business.

Cultivator Differentials

Usually, the movement of cultivators is straightforward, so they use a rigid drive on both wheels. However, when hilling the beds, the turns are frequent and the hard drive can make work difficult. In this case, it becomes necessary to use a differential for the cultivator, which is easy to do with your own hands. The tiller differential has no design features compared to the tiller differential, so the same circuits can be used. The simplest homemade product is a differential, consisting of a hub with a transverse axle fixed with a bolt. This design allows you to adjust the angle of rotation from 120 ° to 240 °, which is optimal for small-sized cultivators.

Simple construction for a tiller

Many farmers, when using conventional equipment, often think about how to make a differential on a tiller with their own hands. A similar idea can visit the master when an old element breaks. There are no special difficulties in making a differential for a tiller with your own hands. But still, for a start, you should stock up on a suitable scheme or prepare drawings.

Those who are thinking about which type of differential to choose for a tiller should remember that this type of equipment does not require long rotation of the wheels about the axle. That is why you can choose the simplest options.

Often, universal differential systems are used for tillers. They make it possible to deviate the wheels from the axis by a certain degree.

Do-it-yourself overrunning clutch for a tiller

Overrunning clutches are often used as a differential. It is necessary for easy cornering, since most tillers operate on a rigid drive, which copes well with straight-line movement on a flat surface. However, when performing work that involves frequent turns or when driving on uneven surfaces, the tiller becomes difficult to control. When cornering, it is necessary to raise one edge to prevent the wheel going along the outer arc from slipping, which can cause significant inconvenience. The overrunning clutch allows one of the wheels to move faster, making it easier to operate the tiller.

Video with detailed instructions for creating an overrunning clutch from parts from Zhiguli:

Why would a tiller need this element

The tiller wheel, which follows the outer arc when cornering, has to travel a longer distance. And then there is a need for a differential or other mechanism for distributing power, which will avoid slipping. If this element is not in the wheeled device, it will cause a straightening of the movement. over, the greater the distance between the wheels, the more difficult it will be to turn.

Most of the work that is carried out on the ground, for example, cultivation or fertilization, is carried out in a straight line. But this does not mean at all that the device will never turn. Of course, the standard version of the tiller with a rigid 2-wheel drive makes it quite convenient to use in most agricultural work. But if frequent turns are necessary, the problem with slipping and steering will have to be additionally solved. If you do not use special mechanisms, the vehicle will brake with lugs. Such work will be difficult even for a person with great physical strength.

Most often, experts choose the use of overrunning clutches as a solution to this issue.

These are simple and versatile settings that allow you to correctly distribute the load between the wheels when you need to turn the tiller. The versatility of this method lies in the fact that overrunning clutches can be used not only on a rigid axle, but also on a connected one. In this case, when turning, the wheel will tend to rotate faster than the front shaft. This makes it possible to conveniently control the machine and work even in small areas, as the device becomes more maneuverable.

DIY Tiller Differentials

A differential hub is required if the tiller is not equipped with an unlock, which reduces maneuverability. In the case when such a mechanism is installed, during the turn, one wheel begins to move faster due to the unlocking, thereby reducing the steering angle.

You can also use a locking pivot extension, which is easy to make by hand. A homemade extension cord locks one of the wheels, creating a differentiated wheel movement. Differential changes the distribution of torque between the wheels, which allows steering without slipping.

You can make a differential with your own hands from improvised means, parts from cars or specially made parts. It can be a hub or extension with or without overrunning clutch. In the simplest version, you need to take a bushing with a transverse slot and insert a short axle into it. The last element is necessarily fixed with a bolt, and after that it is attached to the wheel structure. This system works quite simply. The drive axle must turn the bushing until it stops, that is, until it hits the bolt. It is worth noting that with this element the master can initially set the most suitable wheel rotation angle for him, which also depends on the size of the slot.

A feature of such a detail is its maximum simplicity. You don’t have to be an experienced craftsman or mechanic to make such a differential for your tiller. It is enough just to have certain skills of working on the machine. This will be enough to obtain the basic elements that are needed to make such a differential.

Advantages and disadvantages

The main advantage of this method of solving the issue with turning the wheels is the simplicity of the design. In addition, such a differential is universal, as it is suitable for almost all types of tillers.

But the semi-differential also has its drawbacks. Here you need to first of all note the small angle of rotation, which will be available after installing such a structure. A mechanism of this type does not provide the ability to rotate more than 240 º. Many farmers note that the presence of a transverse groove makes the structure not very strong. Under heavy load, the axle can break. Therefore, those who decide to use their own hand-made differentials for the tiller should be prepared for the fact that the structure will periodically have to be repaired and altered.

Considering all the pros and cons, we can say that for those who are not too picky about their tiller and slightly load it with direct and rotary work, the semi-differential is perfect. For serious loads, it is worth looking for more durable structures.

Do you use a tiller differential?

Differential need

Many works performed with a tiller (for example, cultivation) assume its rectilinear movement. In this case, the rigid drive to both wheels works great, significantly reducing the cost and simplifying the tiller.

If you need frequent sharp turns, a tiller of this type will require the application of noticeable physical efforts. one of the wheels will brake with lugs, and the tiller will have to tilt, hanging the outer wheel in the air.

This is especially difficult if the tiller has a wide track and a large enough weight.

Tiller Differential Designs and Purpose

Holland Happy Hour- Thermaline CCT Testing System for Sanitary HX

For Farmer brand tillers, the differentials consist of two clutches, and the control is carried out using the levers on the steering wheel.

Characteristics and varieties of hubs for tiller

Tiller hub is needed to fit pneumatic wheels or steel lugs.

Tiller wheel hubs are of 3 main types:

differential hub with unlocking;
semi-differential hub (simplified version of the previous one);
common hub.

According to the diameter of the hub, they are classified into:

hex (24 and 32 mm);
round.

How to make a differential for a tiller with your own hands. we paint in order

Types of power distribution mechanisms

Structurally, the simplest way to solve the problem arising from the rigid coupling of the wheels is to use overrunning clutches, which allow the wheel to rotate faster than the axle driving it.

This mechanism is well known in all its variations: both with a ratchet mechanism (bicycle wheel hub) and with roller wedging (electric starter bendix).

Overrunning clutches are also used in the power drive of a number of vehicles with connected axles. However, such a solution has a characteristic feature: when cornering, the overrunning clutch is disconnected at the wheel running along the outer radius, since it tends to rotate faster than the drive shaft.

To facilitate entry into a turn, on the contrary, most of the torque should be imparted to him.

This problem is solved in the classic gear differential, which distributes power inversely with the resistance to rotation of the wheels.

But it is also much more difficult to manufacture, and also requires forced full or partial blocking off-road, since otherwise it redistributes all the power to the skidding wheel.

How to make a differential on a tiller with your own hands?

using a lathe, a part is turned according to the drawings;
a flange is machined and carefully welded to a part of a metal pipe;
for the manufacture of the differential, use only high-quality steel blanks, since this part is subject to high loads.

Cultivator Differentials

Usually, the movement of cultivators is straightforward, so they use a rigid drive on both wheels. However, when hilling the beds, the turns are frequent and the hard drive can make work difficult. In this case, it becomes necessary to use a differential for the cultivator, which is easy to do with your own hands. The tiller differential has no design features compared to the tiller differential, so the same circuits can be used. The simplest homemade product is a differential, consisting of a hub with a transverse axle fixed with a bolt. This design allows you to adjust the angle of rotation from 120 ° to 240 °, which is optimal for small-sized cultivators.

Why would a tiller need this element

The tiller wheel, which follows the outer arc when cornering, has to travel a longer distance. And then there is a need for a differential or other mechanism for distributing power, which will avoid slipping. If this element is not in the wheeled device, it will cause a straightening of the movement. over, the greater the distance between the wheels, the more difficult it will be to turn.

Most often, experts choose the use of overrunning clutches as a solution to this issue.

Do-it-yourself overrunning clutch for a tiller

Video with detailed instructions for creating an overrunning clutch from parts from Zhiguli:

DIY Tiller Differentials

Self-production of a hub for a tiller

As already mentioned, there are different versions of the hubs for the tiller. To make the simplest option, you can use the following drawing:

The main thing to remember when manufacturing yourself is to follow safety precautions and use high-quality materials for a longer service life of the part.

We also suggest that you familiarize yourself with a detailed video, which tells about the intricacies of making a homemade hub for a tiller:

Simple construction for a tiller

Many farmers, when using conventional equipment, often think about how to make a differential on a tiller with their own hands. A similar idea can visit the master when an old element breaks. There are no special difficulties in making a differential for a tiller with your own hands. But still, for a start, you should stock up on a suitable scheme or prepare drawings.

Often, universal differential systems are used for tillers. They make it possible to deviate the wheels from the axis by a certain degree.

How to make differential hubs (unblockers) for a tiller with your own hands

Motor-cultivators have recently been in great demand among agricultural workers. As for the tiller differential, it is an integral part of the vehicle’s drive train. It is an element with several wheels that are located on the same axle. Despite the fact that initially this part may seem quite complicated, it is not only easy to fix it, but you can make a differential for the tiller with your own hands. There are many diagrams and drawings that are successfully used by both specialists and beginners in this business.

How to make a hiller?

A do-it-yourself potato hiller for a tiller will not differ in functionality from a unit released in production. It’s easy to do. For work, you will need a welding machine, an angle grinder and a metal sheet no more than 3 mm thick. It is imperative to take into account the attachments designed for the tiller or cultivator. The cultivator has less power than the tiller.

For the hiller of the lister version, a 2 mm thick metal is required on the cultivator, from which the working material will be cut. half wings. After the parts have been cut out, they need to be bent in the desired radius. In the future, the parts are welded at the fixation points. Edges are processed by an angle grinder.

The distance between the two half-wings is fixed with a steel crossbar. On the inside of the device, a metal pipe with several holes is welded, which allows you to install the necessary recess in the soil. Another pipe is bolted to the rack, which goes to the tiller.

You can also make disc hillers for a tiller with your own hands. They are a little more difficult to make than the Lister view, but with the drawings at hand, you can try.

To make a homemade disc hiller, you will need to purchase two concave discs (discs from an old seeder will do). You can cut out 2 mm wide metal plates yourself. The diameter of the disc hiller circles must be at least 40 cm. You will also need two racks and lanyards, a leash in the shape of the letter “T”.

At the desired distance, the discs are tilted to the rack with adjustable adapters by welding or bolts. Lanyards make it possible to adjust the discs vertically. When making a hiller yourself, be sure to ensure that the disks are installed symmetrically. Otherwise, the tiller will skid to the side.

A self-made disc hiller has many advantages. Any person can make it, it is enough just to find available drawings and diagrams (you can find them in special magazines about a garden, a vegetable garden or on the Internet). Do-it-yourself potato hillers will require a little cost, and the efficiency is no different from the finished apparatus.

The manual hiller allows you to plow the soil without using machinery. Allows you to process small areas. To make a homemade hiller you will need:

Discs or sheets of metal as a blade. 2 pcs;
Cam-type mechanism. 2 pcs;
Fixing brackets. 2 pcs;
Metal racks. 2 pcs;
Bridge beam;
Handle-beam.

Important to remember! The disc hiller differs from the lister not only in the cutting tool, but also in the frame design. When manufacturing, it is necessary to set the blade width in a practical way. For discs, the width should be up to about 25 cm, for listery. about 30 cm. This is due to the nature of the cut of the blades. Discs plow the soil in a straight path, and sheets of metal are plowed at an angle.

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General Tips

Let’s start with the simplest option in the form of an axle extension with a transverse groove. It will be quite reliable even when made from affordable low carbon steel.

Power distribution options

Structurally, the simplest way to solve the problem arising from the rigid coupling of the wheels is to use overrunning clutches, which allow the wheel to rotate faster than the axle driving it.

Differential need

If you need frequent sharp turns, a tiller of this type will require the application of noticeable physical efforts. one of the wheels will brake with lugs, and the tiller will have to tilt, hanging the outer wheel in the air.

This is especially difficult if the tiller has a wide track and a large enough weight.

tiller with differential: overrunning clutch and unblockers, how to make a lock with your own hands. drawings

An integral part of the power drive of any vehicle with multiple wheels on one axle can be considered a differential for a tiller. The purpose of this mechanism is to distribute power between the wheels depending on rolling resistance, which is extremely necessary when cornering.

Since the wheel passing the outer arc of the turning trajectory, in the same time passes a longer distance than the wheel following the inner arc, it must rotate faster, otherwise it will slip.

Thus, an axle devoid of a differential will tend to straighten its movement, and this effect is expressed the stronger, the greater the distance between the wheels.

How to make a homemade differential for a tiller with your own hands. drawings

How to make a differential for a tiller with your own hands? As a rule, the operation of a tiller does not require a long rotation of the wheel relative to the drive axle.

Due to this, often called “semi-differential” schemes are common, which provide the ability to freely rotate the wheel about the axis at a certain angle.

For more details on the “half-differential” see

The simplest mechanism in this case looks like a bushing with a transverse slot attached to the tiller axis. A short axle is inserted inside this bushing, secured from falling out by a bolt wrapped in its body through a slot, and a wheel is attached directly to the axle.

At the same time, when the tiller moves, the drive axle turns the bushing freely until the rear edge of the slot rests against the bolt, and then transmits torque through it to the axle.

Soil cultivation is one of the main agrotechnical measures, which is an obligatory part of the annual soil cultivation regime. By clicking on the link, get acquainted with the convenient and practical Loplos cultivator.

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The quality of the grown products, their productivity, and, ultimately, the return on financial and physical investments depend on the timely and high-quality use of special means when growing a crop. Here you will learn how to make a sprayer with your own hands.

During the turn, the wheel, trying to overtake the drive, moves the bolt forward along the slot, breaking the transmission of torque, and the angle of easy rotation of the tiller depends on the length of the slot.

Such extension cords are extremely simple and can be made by unskilled machine operators, and therefore are cheap and widespread. Usually they are made with several additional holes, allowing you to vary the tiller track width and rigidly connect the wheel to the drive axle if necessary.

Blueprints of these homemade differentials are widespread on the internet.

The disadvantage of the described design is the relatively small possible angle of free rotation of the wheel (no more than 240 degrees), since the transverse groove greatly reduces the overall strength of the mechanism, and high internal friction, especially when dirt is inevitable inside the hub.

Freewheel extensions are most commonly used on light tillers like the Niva.

Differential for tillers Salyut and the likes of Texas, Foreman, Viking, Forza, Sadko, Don, Huter, Profi, having a relatively large mass, has a slightly more complex design, but also a larger freewheel angle. within 330 degrees.

This is ensured by the fact that the engagement is carried out by protrusions on the drive axle extension and on a freely rotating hub fixed thereon, equipped with ball bearings. Accordingly, the hub can make almost a full revolution about the axis until it rests against the opposite edge of the protrusion.

It is noticeably easier to deploy a tiller with such differentials.

A number of designs allow the wheels to rotate freely about the axis and more than one revolution. For example, the Farmer tiller differential consists of two clutches controlled by levers on the steering wheel.

If necessary, the owner of the tiller can disengage the desired clutch, allowing the corresponding wheel to rotate as long as desired.

Overrunning clutches

This mechanism is well known in all its variations: both with a ratchet mechanism (bicycle wheel hub) and with roller wedging (electric starter bendix).

To facilitate entry into a turn, on the contrary, most of the torque should be imparted to him.

This problem is solved in the classic gear differential, which distributes power inversely with the resistance to rotation of the wheels.

But it is also much more difficult to manufacture, and also requires forced full or partial blocking off-road, since otherwise it redistributes all the power to the skidding wheel.

Axle extension

It is better to use the bolt connecting the components of the extension with a head for an internal hexagon and mill a groove with a width equal to its outer diameter.

In this case, firstly, there are no protruding parts capable of winding grass around themselves, and secondly, the bolt tightened to the stop will not loosen over time.

The gap between the bushing and the extension shaft must not be made too small, since they will touch each other if corrosion occurs. It is highly desirable to place a grease fitting on the sleeve for CIP lubrication of the structure.

The more complex pivoting hub design can also be made from mild steel as it welds easily.

Finishing of the bearing bores in the hub must be done after the flange and steering angle stop have been welded to it due to the inevitable warping of the part during welding.

The invested labor costs will quickly pay off by facilitating the operation of the tiller.

Power distribution mechanisms

Cultivation and other work that is carried out using a tiller should involve the movement of the machine in a straight line of the mowing line. The work of the machine is carried out due to the action of a rigid drive on 2 wheels, which simplifies the use of the tiller. Frequent turns of the tiller require significant effort, since the wheel will begin to brake with the lugs. In this case, tilting the unit is very difficult in the presence of a wide tiller track and its sufficiently large weight.

A simpler and more constructive way to solve the problem that arises due to the rigid connection of the wheels involves the use of overrunning clutches. They allow the wheel to spin at a faster rate than the axle driving it.

The use of overrunning clutches is also typical for the power drive of machines with connected axles. When turning, the wheel tends to rotate faster than the front shaft. As a result, this leads to the disconnection of the freewheel on the wheel running along the outer radius. On the one hand, entry into a turn should be facilitated, but the torque should be communicated to the wheel to a greater extent.

The solution to the problem is associated with the use of a classic gear differential, which distributes power in an inverse proportion to the resistance to rotation of the wheels. In production conditions, the solution to this problem involves forced full or partial blocking off-road, otherwise the entire power of the unit is redistributed to the skidding wheel.

Differential Design Overview

The design flaw of the differential mechanism can be associated with a small possible angle of free rotation of the wheel (no more than 240 °). Due to the transverse groove, the overall strength of the entire structure is greatly reduced, there is strong friction inside the mechanism, especially as a result of dirt getting into the bushing. Extension cords with free play are often used on light tillers (“Neva”).

complex in its design is the differential for the Salyut tiller, which has a relatively large mass and a freewheel angle (about 330 °). The extension of the drive axle of the tiller structure has protrusions for engaging. They are also present on the freely rotating hub, which is fixed to the extension. This part has ball bearings, which allows the hub to make a full rotation about the axis until it rests against the edge of the lip on the opposite side. It is easy to deploy a unit with a differential of this type.

For example, for “Farmer” tillers, the device consists of two clutches, controlled by levers on the steering wheel. If necessary, the owner of the unit can allow a long rotation of the wheel by disengaging the necessary clutch.

The process of operating the device often does not imply a long rotation of the wheel about the axis. This would lead to the spread of “semi-differential” schemes that provide free rotation of the wheel relative to the axis at the required angle.

The best way to use a bolt to engage the extension pieces is to have a head under the hex. In this case, a groove is milled that has a width the same as the outer diameter of the head. The clearance between the extension shaft and the bushing must not be kept too small, since in case of corrosion they can strongly stick together.

A grease nipple can be placed on the sleeve to lubricate the unit. It is possible to make a differential mechanism with a pivoting hub of increased complexity from low carbon steel, since it is quite easy to weld.

Finishing of the bearing bores in the hub is carried out after a flange having a rotation angle stop has already been welded to it. It is necessary in case of inevitable warping of elements during welding.

Purpose and characteristics of the tiller differential

A differential for a tiller is a mechanism included in the design of a vehicle. It is an integral part of the drive train, equipped with multiple wheels on one axle. Drawings of homemade differentials are widely used on specialized sites.

The main purpose of the differential device involves the distribution of power between the wheels of the unit. Differential is easy to make. Its presence in the structure is necessary for the device to pass all the turns normally.

Since the wheel, which follows the outer arc of the turning trajectory, must simultaneously travel a longer path than the one that follows the first within the inner arc, then its rotation must occur faster, otherwise it will be possible to observe the slipping of the mechanism. The absence of a differential on the axle causes a straightening of its movement, the effect of which increases with an increase in the distance between the wheels of the unit.

The process of creating a differential for a tiller with your own hands cannot be considered difficult.

This has been proven by the experience of many owners of this type of equipment.

At the same time, common offers to buy a differential for a tiller can copy the original handicraft mechanisms. Labor investment pays off quickly with easier tiller operation.

Sources:

http://sadovij-pomoshnik.ru/motobloki/differentsial.html
http://traktoramira.ru/remont-i-obsluzhivanie/differentsial-dlya-motobloka-svoimi-rukami.html
http://sadovaja-tehnika.com/motobloki/differentsial-i-stupitsa/
http://o-motoblokah.ru/motobloki/differentsial-i-stupitsa
http://specmahina.ru/motoblok/differentsial.html
http://arendavlg.com/motobloki/differencial-i-stupica-dlya-motobloka-funkcii-vidy-samostoyatel-noe-izgotovlenie.html
http: //xn8sban6b6a.xnp1ai/selhozavto/stupicy-dlya-motobloka-2.html
http://machinspec.com/selskoxozyajstvennaya/motoblok/samodelnye-differencialy.html
http://1sadteh.ru/komplekt/differencial-dlya-motobloka.html

tiller Motor Sich. automatic differential closer.

Differential for a tiller with your own hands

Craftsman43.RU

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