Your Leading Ningbo T & X Machinery Co., Ltd. Supplier

 

Founded in 2004 and located in Ningbo city, east seaport of China
T & x Machinery has been committed to providing customers with various OEM products and offering services according to diversified processes like forging,casting and CNC machining.Meanwhile,T&X Machinery pays high attention to its own product research & development.

 
Why Choose Us?
 
01/

High quality
Our products are manufactured or executed to very high standards, using the finest materials and manufacturing processes.

02/

Competitive Price
We offering a higher-quality product or service at an equivalent price. As a result we have a growing and loyal customer base.

03/

Rich experience
Our company has many years of production work experience. The concept of customer-oriented and win-win cooperation makes the company more mature and stronger.

04/

Global shipping
Our products support global shipping and the logistics system is complete, so our customers are all over the world.

05/

After-sale service
Professional and thoughtful after -sales team, let you worry about us after -sales Intimate service, strong after -sales team support.

06/

Advanced equipment
A machine, tool or instrument designed with advanced technology and functionality to perform highly specific tasks with greater precision, efficiency and reliability.

What is Shark Tooth Wheel ?

 

A tooth wheel is essentially a wheel having on its periphery a nnmber of projections at equal distances apart, with corresponding indentations or spaces into which the teeth of the correspouding teeth can fit with ease.

 

What is Disc Harrows ?
A disc harrow is a harrow whose cutting edges are a row of concave metal discs, which may be scalloped or set at an oblique angle. It is an agricultural implement that is used to till the soil where crops are to be planted. It is also used to chop up unwanted weeds or crop residue.

It consists of many carbon steel discs, and sometimes longer-lasting boron steel discs, which have many varying concavities and disc blade sizes and spacing (the choices of the latter being determined by the final result required in a given soil type) and which are arranged into two sections ("offset disc harrow") or four sections ("tandem disc harrow"). When viewed from above, the four sections would appear to form an "X" which has been flattened to be wider than it is tall. The discs are also offset so that they are not parallel with the overall direction of the implement. This arrangement ensures that the discs will repeatedly slice any ground to which they are applied, in order to optimize the result. The concavity of the discs as well as their offset angle causes them to loosen and lift the soil that they cut.

Benefits of Shark Tooth Wheel
 

Simple design

The simple compact design of shark tooth wheel makes them easy to create, design, and configure. They can fit easily into restricted and tight spaces with few limitations.

Precision and accuracy

This aspect of shark tooth wheel is one of the major reasons for their wide usage. Spur gears increase and decrease speed with exceptional precision and accuracy at a constant velocity.

Gear reliability

It is very unusual and unlikely for a shark tooth wheel to fail during use. Their durability and strength make it next to impossible for them to slip, break, or malfunction.

Production cost

This is another factor that has made shark tooth wheel so indispensable. Their simplicity makes it easier to manufacture them, which greatly decreases their production cost. Large volumes of spur gears can rapidly be produced with little waste.

Efficiency

Efficiency works in conjunction with reliability. During the useful life of a shark tooth wheel system, the gears are able to transfer large amounts of power across several gear trains without any or minimal loss of power.

Straight teeth

The straight teeth of shark tooth wheel eliminates the likelihood of axial thrust since power is transmitted in a straight line at the pitch angle of a spur gear’s teeth.

 

Penetrating-long life-Heat Treated Row Crop Sweeps

 

Benefits of Disc Harrows

1.Iron and steel discs and their offset loosen any soil they cut.
2.After loosening the soil, the iron and steel discs of a disc harrow slices the ground over a little bit and also picks up the soil.
3.Digs up the roots of unwanted weeds.
4.Creates a crumbly layer for planting.
5.Protects the soil surface from easy drying.
6.Improves the air and water absorptive capacity of soil.
7.Eliminates any clumps of soil or clay.
8.Improves the microbiological processes in the soil.
9.Improves nutrient availability to feed plants.
10.It shuffles the soil allowing quicker growth of any planted seeds.

 

Types of Shark Tooth Wheel
Tillage Cultivator Blade
Rotavator Blade
Tillage Cultivator Blade
Drive Shaft

Spur gear
Spur gears often operate on parallel shafts. Additionally, this gear runs with a single line of contact between teeth, meaning only one tooth is in contact with another at any given time. Single contact makes spur gears noisier than their similar counterparts, such as the helical gear. Regardless, spur gears are the most common type of gear because of their simplicity and precision.

 

Helical gear
Helical gears are designed similarly to spur gears and can be used to drive parallel axes or non-parallel/ non-intersecting shafts. Additionally, helical teeth are oriented at an angle, causing multiple teeth to be in contact with another at any given time. This produces a quieter, smoother operation.

 

Bevel gear
Bevel gears operate on intersecting axes, specifically at 90 degrees. Like helical gears, bevel gear teeth are designed at an angle, causing multiple teeth to be in contact at once. All bevel gears are cone-shaped, but a variety of different bevel gears can be acquired, including: spiral bevel gears, straight bevel gears, and crown bevel gears.

 

Screw gear
Screw gears resemble bevel gears. However, screw gears operate with a 45 degree twist angle on non-parallel/ non-intersecting shafts. Though important for specific circumstances, screw gears do not have an extensive load carrying capacity.

 

Worm gear
Worm gears are found in pairs, often comprised of a screw-shaped gear and a circular gear. Worm gears operate smoothly and quietly and produced large amounts of friction. Finally, they are used solely for non-parallel/ non-intersecting axis configurations and ideal for high-shock load applications.

 

Rack and pinion gear
Rack and pinion gears are also found in pairs, comprised of a cylindrical gear and a gear rack. They are used for parallel axes configurations. Due to their design, rack and pinion gears produce high friction and stress.

 

Types of Disc Harrows

 

Disc harrow

It usually consist of set of individually mounted discs arranged in opposite directions, to throw soil in different directions.

01

Offset disc harrow

It can be used in medium and light soil for ploughing. Attached to the tractor it is easily transportable.

02

Heavy duty hydraulic harrow

Heavy Duty Hydraulic Harrow consists of bearing spools for better lubrication and less load on tractor. High quality seals are prevent the bearing and hub from mud and water.

03

Tandem disc harrow

High quality steel discs are compatible to be used in light and medium soil. Quick hitch compatible, it can be used for tillage depth upto 100 - 152 mm.

04

 

Tillage S Tine

 

Application of Shark Tooth Wheel

The industry-leading SharkTooth® Wheel features sharp, backward-sloping teeth. Capable of cutting and moving even the toughest residue to improve planting conditions and the ride of the planter row unit, this row cleaner wheel is designed for conventional, minimum till, no-till, and cover crop planting conditions.

 

Application of Disc Harrows

 

Soil preparation for cultivation
One of the primary uses disc harrow is to prepare the soil for cultivation. Disc harrow it is particularly useful for breaking up clods of earth, mixing soil and plant residues and leveling the field before sowing. It is ideal for working in heavier, clayier soils that can be difficult to work with other implements.

Disc harrows they are also good for mixing organic fertilizer or compost with the soil. Thanks to this, the soil is better prepared for cultivation, because its fertility increases. Additionally, disc harrow helps to evenly distribute the fertilizer along the field, which contributes to uniform plant growth and optimal yields.

 

Disc harrow for weed control
With the correct setting disc harrow Young weeds can be effectively removed without disturbing crops. Thanks to the appropriate selection of the working depth of the discs, the weeds are uprooted, which limits their re-growth. Thus, the harrowing process removes weeds from the field surface, which reduces their competition with crop plants for access to nutrients and water.

 

Mixing crop residues with the soil
Plant residues often remain in the fields after harvest, which can inhibit the growth of new crops. Disc harrow is one of the most effective tools to manage these leftovers. With properly selected settings, it can effectively crush and bury post-harvest residues, accelerating their natural decomposition process. This in turn helps to clear the field, eliminating obstacles for new crops. Shredded plant remains are gradually degraded by soil microorganisms, contributing to the enrichment of the soil with organic material.

 

Improvement of soil structure
Disc harrow can also be used to improve soil structure. Its action contributes to several beneficial effects that have a positive effect on crops. The first of these results is improved soil drainage. Plates disc harrow they crush and break up clods of earth, creating finer particles. As a result, they facilitate the drainage of excess water from the soil, preventing excessive moisture retention and the formation of muddy areas. Another beneficial effect is the reduction of soil compaction. Working tools penetrate the soil to a certain depth, breaking the soil crust and loosening it. This makes the soil more permeable to water, air and plant roots.

Components of Shark Tooth Wheel
 

 

Addendum: The teeth of gears extend outward for external gears and inward for internal gears from the pitch circle. This projection of gears is the radial distance between the pitch diameter and the diameter of the gear, which is referred to as the addendum with the tops of the gear teeth forming the addendum circle.

 

Axis: The axis controls the direction of gear movement and how that motion is translated. Parallel axes are the most common form of axis where two axes are parallel. With intersecting axes, the axes are perpendicular to each other and are used to change the direction of motion. Although parallel and intersecting are the most common form of axes, there are gears that are not parallel and do not intersect.

 

Base circle: The base circle is a theoretical construct that is used to generate the involute curve for the creation of tooth profiles.

 

Dedendum: The dedendum is the depth of a gear tooth between the pitch circle and the minor or inside diameter.

 

Diametral pitch (DP): The diametral pitch is the ratio of the number of teeth to the pitch diameter. In order for gears to mesh properly, they must have the same diametral pitch. It is expressed in the United States and the United Kingdom as the number of teeth per inch. As the number of teeth per inch increases, the profile of the teeth gets smaller. The larger the DP value, the size of the teeth of a gear get smaller.

 

Fillet: The gear tooth fillet, also known as the trochoid, is the byproduct of the gear cutting motion and is located just before the cutter tip impression on a gear tooth.

 

Form diameter: The form diameter is an imaginary circle that is produced by connecting the trochoid or fillet curve of the teeth of a gear, is known as the involute form diameter (TIF) and is less than the base circle diameter.

 

Gear ratio: The gear ratio indicates how many times a gear must turn for another gear to turn once. It is a direct measurement of the ratio of the rotational speeds of two or more interlocking gears. If the drive gear that is receiving power is bigger than the driven gear, the latter will turn quicker. If taken in reverse and the powered gear is smaller than the driven gear, the former will turn faster.

 

Pitch circle: The pitch circle defines the size of a gear and needs to be tangent to another gear in order to mesh. It is an imaginary circle that goes through each of the teeth of a gear with a radius that makes it possible to make contact with a similar circle.

 

Pressure angle: The pressure angle is an angle formed by a line that is tangent to the pitch circle and a normal line to the tooth profile at the pitch circle. It is determined by the tool that is used to form the involute curve of the gear teeth. Standard pressure angles are 14.5o, 20o, and 25o. The pressure angle determines how gears make contact and the amount of force that is distributed along the teeth. For two gears to mesh, they must have the same pressure angle.

 

Teeth: Teeth of a gear project outward or inward depending on the design of the gear. When they project outward, the teeth on the circumference of the gear are used to transmit rotation. When they are on the inside of the gear, they are referred to as internal gears, which are matched with an external gear and commonly used for planetary gear drives.

 

Components of Disc Harrows

 

Disc

Circular concave cutting blades made of steel. It has further two types: Smooth edge disc/plain edge disc and notched edge disc/cut-away discs or scalloped edge discs.

Frame

It is used to hold and support the disc.

Arbor bolt

Heavy steel shaft to mount the disc.

Spool or spacer

Flanged tube mounted on arbour bolet between every two discs used to prevent any lateral movement of the discs and retain their fixed position. Used to keep equal spacing between the discs.

Bumper

Heavy iron plate situated at the end of each gang to counter; it protects the discs from the collision of adjacent discs.

Bearings

It assists the rotation of the gang.

Scraper

Saves disc from clogging, removes the soil from the disks, keeping the concave side of the disk clean.

Transport wheel

In some of disc harrows, transport wheels are provided for transportation purposes.

Disc gang

Assembly of disks mounted on a common arbour bolt with disc spacer, bearing, and bumper.

Weight box

Provided on the main frame of the harrow for bearing additional weight for increasing the penetration of the disc into the soil.

 

Process of Shark Tooth Wheel

1.Firstly perform the blank with or without gear tooth
2.The Heat Treatment process for the gear blank if it’s required
3.Secondly machining the gear blank to get the appropriate dimensions
4.Finish the preform teeth or produce the gear teeth by machining
5.Harding process for the gear teeth or all gear wheel
6.Thirdly final finishing of the gear teeth(shaving, grinding)
7.Final inspection of the gear wheel

Tillage S Tine
Process of Disc Harrows
 

 

Equipment check
1.Before using this farming tool, make sure it’s in good working condition and all its parts are well taken care of and working properly.
2.Ensure that the disc blades are sharp and set to the right depth for cutting.
3.Connect it to the tractor using the right hitch and make sure it’s firmly attached.

 

Field preparation: Ready, set & succeed
1.Remove any big rocks, debris, or obstacles from the field that could get in the way of the disc harrow while working.
2.If the soil is either too dry or too wet, think about changing the timing of your operation to get the best possible outcomes.

 

Field condition
1.Before operating the type of harrow, it is crucial to assess the soil condition and moisture content in the field. Operating this tool on soil that is too wet can result in excessive soil clumping and reduced efficiency.
2.Conversely, working on soil that is too dry may lead to ineffective breaking up of the soil. Therefore, it is essential to ensure the soil is at an optimal moisture level to achieve efficient and effective results with it.

 

Field direction
1.When choosing the direction of your farming paths using this farming implement, consider the way the wind usually blows and the shape of the land.
2.It’s better to work across the wind and slope rather than going parallel to them. This way, you can avoid soil erosion and make your farming efforts more effective.

Depth adjustment following stubble

 

If there is stubble from the previous crop in the field, make sure to set the disc harrow at the right depth. This way, the harrow can chop up the stubble and mix it into the soil, which helps the leftover plant material break down and makes the soil better.

 

Safety precautions
1.Always follow safety rules and wear the right safety gear (like gloves, goggles, etc.) when using the disc harrow.
2.Make sure to keep people who are not involved in the work, and other farm workers, far away from the working area. This will help avoid accidents.

 

Consider the double pass harrowing technique
1.After you finish the first round of working on the field, go over it again, but this time, move in a different direction. For example, if you went north to south in the first round, now go from east to west this time. This way, you cover the whole field from different angles and make sure the soil is well-prepared everywhere.
2.Double-pass or cross-harrowing improves the seedbed for planting crops by making the soil smoother and reducing large clumps. This results in more even seed growth and makes it easier for the plants to take root firmly in the ground.

 

Straight lines
1.Try to keep the tractor driving in straight lines to ensure a consistent tillage process.
2.Utilise visual markers in the field to assist in keeping the lines straight while driving the tractor.

 

How to Maintain Shark Tooth Wheel

 

1.Ensure high performance and prolonged life-time by having your certified specialists verify the condition and tension of the chain, as well as perform the accurate alignment of both chains, ensuring they are level and parallel to each other, which is crucial for optimal lifting and precise tray positioning.


2.Maintain a smooth operation by ensuring an optimal production flow, using skilled and experienced technicians, who know which bearings to change and how to ensure the optimal condition of the tooth wheel, tray carriers and chain rails.


3.Stay prepared for the unexpected by stocking critical spare parts for daily operation, such as bearings, clutch, tooth wheel. 

 

How to Maintain Disc Harrows
 

 

1.Always check whether the fasteners are loose before and after the operation, and whether the rotating parts are flexible;


2.The surface of the components of the hydraulic system should always be kept clean, and the two joint surfaces of the quick self-sealing plug should be wrapped in time after separation, so as not to be contaminated;


3.All moving parts should be lubricated frequently;


4.After a working season, the entire disc harrow should be disassembled for maintenance once, and the soil on the machine should be removed;


5.Disassemble the outer spherical ball bearing, replace the lubricant in the bearing, clean the outer spherical surface of the bearing and the inner surface of the bearing seat, and fill it with lubricant during assembly. After assembly, the sealing ring is not allowed to move relative to the outer ring of the bearing;


6.The place where the paint falls off should be filled to prevent rust;


7.After the disc blades are cleaned, they should be coated with antirust agent or engine oil;


8.Double-acting oil cylinders, hoses and quick self-sealing plugs are all disassembled, washed and maintained, and damaged parts are replaced in time, and stored in a clean and dry place indoors;


9.When parking, use wooden boards to pad the disc group, and apply oil to the disc blades to prevent rust. It is best to park indoors. 

 

Things to Consider When Choosing a Disc Harrow
 

When choosing one, you should consider the following factors: 

 

Soil type: Different soil types require different disc harrow models. For example, if you have heavy clay soil, you may need a heavy-duty disc harrow with large blades.

 

Field size: The size of your field will determine the size of the disc harrow you need. A larger field requires a larger disc harrow to cover more ground in less time.

 

Number of discs: The number of discs on the harrow will affect its cutting capacity. More discs mean faster and deeper soil penetration, but also higher cost.

 

Blade spacing: The spacing between the blades on the disc harrow determines the depth of penetration and the level of soil disturbance. A wider spacing is good for shallow tilling while a narrower spacing is better for deeper tillage.

 

Blade size: The size of the blades will also affect the level of soil disturbance. Larger blades will penetrate deeper into the soil, while smaller blades will produce finer tilth.

 

Bearing type: The type of bearings on the disc harrow will determine its durability and maintenance requirements. Sealed bearings are low maintenance, but may require replacement if damaged. Greasable bearings are more durable but require regular maintenance.

 

Transportability: If you need to move your disc harrow between fields, consider its transportability. Choose a model that can be easily hitched to your tractor and moved around.

 

Price: Finally, consider the price of the equipment. Choose a model that is within your budget and offers the features you need.

 

Comparison and Contrast of Power Harrow vs Disc Harrow

 

Function and purpose
A: Kelly Diamond Harrow is a tool that breaks up large lumps of soil using angled disc blades. These blades can be adjusted to go shallower. It’s usually used after ploughing or to integrate crop residue/stubble into the soil. This harrow cuts and flips the soil around.
B: The main purpose of a power harrow is to facilitate seedbed preparation and even out the soil surface. This tool is commonly employed prior to planting, aiming to establish optimal conditions for seed germination and the development of roots.

 

Design
A: A disc harrow features a series of circular, concave disc blades mounted on a horizontal shaft. These blades operate by vertically slicing through the soil.
B: It is composed of several groups of rotating tines, which are positioned in a helical or spiral arrangement on a horizontal shaft. These tines effectively dig into the soil, breaking it into smaller particles and thus producing a finer seedbed.

 

Residue management
A: Able to manage significant volumes of crop residues and assist in efficiently blending them into the soil.
B: On the contrary power harrow can mix leftover plant materials into the soil, but it might not be as good as a disc harrow at handling really big amounts of these materials.

 

Cost and maintenance
A: Diamond Harrows possess a straightforward design with a reduced number of moving components, typically leading to decreased maintenance expenses.
B: On the other hand, the second type of harrow as discussed above made with a more complicated design, including many parts that move. Due to this, they often need more maintenance, which can be more expensive.

 

Our Factory
 

Founded in 2004 and located in Ningbo city, east seaport of China, T & X Machinery has been committed to providing customers with various OEM products and offering services according to diversified processes like forging.casting and CNC machining.

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202005271106166772ac3e35b2454b80e43da20be3d421

 

Our Certificate
 

 

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FAQ

Q: What are disk harrows used for?

A: Disc harrow is used to till the soil where crops are to be planted. It is also used to chop up unwanted weeds or crop remainders. The discs are also offset so that they are not parallel with the overall direction of the implement.

Q: What are harrows mainly used for?

A: In agriculture, a harrow is a farm implement used for surface tillage. It is used after ploughing for breaking up and smoothing out the surface of the soil. The purpose of harrowing is to break up clods and to provide a soil structure, called tilth, that is suitable for planting seeds.

Q: What is the difference between a plow and a disc harrow?

A: The plough's weight and the force from the spinning discs help it to go deep into the soil. Harrows are not very heavy and their main job is not to dig deep into the ground. Instead, they're better suited for tasks that happen close to the soil surface, for instance preparing the seedbed.

Q: How deep does a disc harrow go?

A: A general rule of thumb for tillage depth of an implement such as a disc harrow is 25 percent of the blade diameter. Thus, a disc harrow with 24-inch blades should be set to till no more than 6 inches deep.

Q: How many types of disc harrow are there?

A: Regarding of the operation mode, there are three different types of disc harrows: Single action disc harrow; consists of two disc gangs arranged in opposite directions, it throws the soil in opposite directions creating ridges and furrows.

Q: Which tillage is disk harrow?

A: Secondary tillage implement
Disc Harrow – It is a secondary tillage implement used for seedbed preparation or control weeds, It used in breaking up clods and surface crusts, It further enhances soil granulation and surface uniformity, Disc harrow prevents weed growth and also destroys existing weeds.

Q: How fast should you pull a disc harrow?

A: In most conditions, the optimal operating speed is approximately 4–6 miles per hour. In sandier soils, discs can be operated up to 8 miles per hour. If you are unsure what the right speed is for your soil conditions, make a few test passes at different speeds and measure the furrow depth.

Q: What angle is a disc harrow?

A: Disc harrows are designed so that you can adjust the angle for the job you are wanting the implement to do. The greater the angle, the deeper the discs will cut into the soil. If the implement is adjusted to have very little angle, the discs will cut lighter and shallower.

Q: Why use a disc harrow?

A: A disc harrow is a crucial farm equipment used to prepare soil for planting or sowing by breaking up the clods and surface crusts. It thus improves soil granulation and destroys the weeds. This equipment makes well-tilled soil for healthier plants and better yields.

Q: What is the advantage of disc harrow?

A: Harrowing or discing happens to be one of the best and oldest practices of soil tillage to ensure the proper preparation of the soil. Soil tilling with the help of a disc harrow helps control the weeds, recycling nutrients of the plants, and providing a soft and ideal structure for placing the seeds in the land.

Q: What is the use of the toothed wheel?

A: Answer: Toothed wheel a wheel with teeth or projections cut or set on its edge or circumference, for transmitting motion by their action on the engaging teeth of another wheel.

Q: What is a wheel with teeth around its edge?

A: A gear is a wheel with teeth along the edge that meshes with another gear to transfer mechanical energy. Gears are used to change the speed, torque, and/or direction of a mechanical system.

Q: What are the advantages of toothed gearing?

A: Advantages: • centre distance for a pair of involute gears can be varied within limits without changing the velocity ratio. The pressure angle remains constant which is necessary for smooth running and less wear of gears. easy to manufacture than cycloidal teeth.

Q: What are gear wheels used for?

A: They are used to transmit effort, change torque (turning force), change direction, or change speed. There are several basic types of gears including: simple gears.

Q: What is a tooth wheel?

A: Definitions of toothed wheel. a wheel with teeth for making a row of perforations. synonyms: roulette. type of: wheel. a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines).

Q: What is the classification of tooth wheels?

A: Classification of Toothed Wheels The gears or toothed wheels may be classified as follows : 1. According to the position of axes of the shafts. The axes of the two shafts between which the motion is to be transmitted, may be (a) Parallel, (b) Intersecting, and (c) Non-intersecting and non-parallel.

Q: What is the difference between a gear wheel and a sprocket?

A: A gear is a wheel with cogs that mesh with the gears of another wheel. A sprocket is a wheel with cogs that mesh with a chain (or belt or tape or film or whatever). Just like a pulley, but with teeth that mesh somehow. A typical bicycle doesn't have any gears on it, just cogwheels that are sprockets.

Q: What is the toothed gear ratio?

A: Gear ratio = rotations of a driver gear : rotations of a driven gear. For every rotation of the 45-tooth gear, the 15-tooth gear must rotate 3 times. This is true no matter how many times the 45-tooth gear rotates. The ratio between the rotations of the 15-tooth driver gear and the 45-tooth driven gear is 3 to 1.

Q: Why do gears have angled teeth?

A: The line of contact between two teeth is not parallel to the teeth but inclined. This ensures gradual engagement of teeth from one end of tooth to other rather than a sudden engagement as in case of spur gear. This gradual engagement makes the gears function smoothly without much noise.

Q: What is the difference between a cog and a gear?

A: Gears are wheels that have teeth, or cogs, around the edges. The cogs of one gear fit into the cogs of another. Every time you ride in a car, you're using gears. Cars have multiple gears that change the speed or force.

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