rotavator ppt.pptx

Choose The Right Rotavator
It is important to select the correct size rotavator for your field or garden. There is little point arranged a large rotavator for a small garden. Also, consider if you will have sufficient space to access the area. if necessary consult with an expert to ensure you choose the correct rotavator for your needs.

When To Rotavate
It is generally advised to rotavate in spring or autumn. These seasons offer softer soil and will result in more aeration than in the summer months.

Check Soil Moisture
Your soil moisture can play a large part in how successful your rotavating is. Sandy soil will rotavate in a very similar way whether dry or wet and so the moisture level is not as important.

In comparison, clay soil must be done when the moisture is favourable. if the soil is too dry it will be very hard and difficult to break apart. In contrast, when the soil is too moist the clay can stick to your rotavator cause unnecessary mess and potential damage to your requirement.

Weed Control
Weed removal is very important when rotavating. If left you will find the weed will quickly grow out of control and the seeds have been mixed throughout the soil of your entire field or garden.

Control The Rotavator Properly
When you are using your rotavator you must ensure you maintain full control of the equipment. A rotavator is a powerful piece of equipment and it can easily course damage or harm if not used properly.

Rotavate The Land In Strips
When Rotavating your land plan head, it is advised to rotavate in strips to ensure the best result. Make a few passes over each strip, and repeat the process at right angles to the original rotavated strips. Don’t dig much deeper than two or three inches deep on the first pass. You can then set the rotavator to dig deeper on each pass after that. You should rotavate offer the course of several hours.

1. ROTAVATOR Tractor and automotive engineering Made by Ranit Sarkar

2. About Services Portfolio Team Contact Ranit Sarkar Need presentation assistance? https ://www.linkedin.com/in/ranit-sarkar-83b295209/ mailto:[email protected] https ://t.me/Ranit_0_1 https://www.youtube.com/channel/UCirfpHbkvkM9l4K4MVYh-Pw

3. CONTENTS 3 Introduction History of Rotavator Composition of materials: Parts: Types: Effect of parameters on performance: Applications: Uses: Operating method: Companies and products: Advantages and disadvantages Conclusion:

4. The rotavator (derived from rotary cultivator) or rotary tiller is a tillage tool. Primarily comprising L‐shaped blades mounted on flanges, which are attached to a shaft that is driven by the tractor power‐take‐off (PTO) shaft. The entry of the rotavator in agriculture is relatively recent in comparison to hand tools and animal‐drawn tillage tools. The delayed entry of rotavators is attributed to the lack of suitable sources of power, prior to the development of the steam powered tractor. The original rotavators were intended for deep land preparation as an alternative to the drawn or passive tillage tools. They were heavy machines that expended excessive energy per unit mass of processed soil at the intended depths of operation. INTRODUCTION 4

5. HISTORY OF ROTAVATOR 5 The powered rotary hoe was invented by  Arthur Clifford Howard  who, in 1912, began experimenting with rotary tillage on his father's farm at Gilgandra, New South Wales, Australia . Arthur Clifford Howard  

6. 6 Twelve blades of rotavator were procured from different dealers / manufacturers in India. Out of these, six different blades were selected for testing their chemical composition and mechanical properties. On the basis of study four medium carbon low alloy steels two with boron and other two without boron were selected. Composition of materials:

7. 7 Rotavator blades were made from these steels and were heat-treated differently (Quenching and tempering in all four steels and Austempering in case of boron contained steels) in order to achieve varying microstructures. Three stage wear test were carried out on the rotavator blades made of selected steels and the two-collected specimen.

8. Parts: 8 1.Rotor shaft 2.Rotor disc 3.Blade 4.Shield 5.Gauge Wheel 6.Bevel gear box 7.Chain drive 8.Skid

9. 9 Blades – The rotavator blade is a critical part of tiller machine that directly engages in tiller blade preparation.. There are two types of blades used in rotary tiller: ‘L’ and ‘C’ shaped. L type blade C type blade

10. ‘L’ shaped blades are the most common and have their superiority to others in heavy trashy conditions for better chopping of weeds, mixing of surface residue. Besides that there is less possibility of blockage. ‘C’ shaped blades are more curved than ‘L’ type and are more suitable in hard ground and are recommended for heavy wet soil.

11. 11 Arrangement of blades – The rotavator blades are self-sharpening under normal conditions . Blades have high peak torques developed during each cut by the blade. blades should be staggered with equal angular displacement between them that only one blade will strike the ground at a time.

12. The blades are generally arranged on a rotor in a spiral or scroll pattern and should be approximately symmetrical about the longitudinal centerline. If two or more that two blades hit the ground at a time, it would result in uneven work and excessive vibration. A rotavator can have two blades or three blades on a rotor. But three blades on a rotor gives better tilth compared to two blades

13. 13 Shield: The shield is provided at the back of the rotavator to control the amount of shattering of soil cut by the blades. Gauge wheel: Gauge wheels are used to obtain desired depth of operation. In some rotavators skids are used for the same purpose. Bevel gear box: The bevel gear box transmits the power from the tractor PTO to the rotavator rotor shaft. The PTO speed is reduced at two stages: first at the bevel gear which also converts the direction of rotation second at the chain drive. The rotor shaft rotates at speed of 250-300 RPM corresponding to the rated PTO speed of 540 RPM. The RPM of the rotor should not be less than 150. Rotor shaft :- Rotavator tractor consists of a rotor shaft. On the rotor shaft cutting blades ('L', 'J' or 'C' shaped) can be attached. Skid – it is fixed on the adjustable frame to fix up the distance between soils vs blade contact that is depth skid,  

14. Types: Regular Rotavator: Gear drive with L-type blades working width ranging from 1.0m to 1.5m. Digging depth 5-6 inches Potato Special Rotavator: Chain type with L-type blades working width ranging from 1.8 m to 2.25m. Digging Depth 8–10 inches 14

15. Staggered Blade Rotavator : Specially Designed to handle un-cut paddy straw. Digging depth 6–7 inches. 15

16. Rotary tiller adjustment Bite length: adjust the rotor speed Desired pulverization: lower or raise the shield Levelling the tiller: use levelling lever of 3 point hitch system 16

17. Effect of parameters on performance Rotor speed: Rotor speed increases at constant forward speed, λ ratio increases, negative draft increases. Higher λ value, more power requirement, smaller bite length, greater throw and impact of soil against shield λ = Ratio of rotor peripheral speed to forward speed of tiller (varies between 7 -10) Shield: Shield down more pulverization Shield down more fuel consumption. 17

18. Blade type L shaped blade offers more negative draft and better soil pulverization Fuel consumption increases with L shaped blade Fuel consumption also increases at higher speed. C type blade requires less PTO power compared to L shape blade (better soil brake up with L blade and higher soil metal friction) L shape blade cuts a soil slice entirely along the cycloid. Better residue incorporation with L blade 18

19. J, C and L shape blade Effect - Puddling Minimum PTO power requirement of 18.89 and 19.10 kW was obtained with J shape blade at 245 rpm rotor speed PTO power requirement was significantly lower in case of J shape blades as compared to other two blade shapes in both soil types. PTO power requirement increased with increase in rotor speed and was maximum at rotor speed of 280 rpm for all three types of blade Fuel consumption was minimum with J shape blade at 245 rpm rotor speed Fuel consumption was significantly lower in case of J shape blades as compared to other two blade shapes in both soil types. Fuel consumption increased with increase in rotor speed and was maximum at rotor speed of 280 rpm for all three types of blade 19

20. Applications: Chopping and mixing :- Rotavator with its chopping and mixing ability is ideal for crops such as maize , sorghum , tobacco , sugarcane , cotton , rice etc .The thrash mixed evenly throughout the soil adds valuable humus to the land 20 Tilling and planting:- To reduce further operations , many rotavators may be occupied with a toolbar mounted planter or a hitch for towing a planter for tillage and planting operations . By rearranging blades on the rotor shaft , the rotavator may be used for strip tillage in the seedbed . Fertilizer and chemicals : - May be incorporate by spreading in bands or broadcasts from tanks or hopper on the tractor or rotavator by broadcasting ahead of the implement . The stirring , mixing action of the rotavator provides excellent incorporations of pre –emergent chemicals .

21. 21 Cultivating :- By rearranging the blade flanges on the rotor shaft , most tillers may be used for row crop cultivations . Rotor diameter and operating depth are limiting factors in the size of plants that may be safely be cultivated in this manner. Rice Field : - Rotavator are adapted to work in wet rice fields . The rotating blades help push the tractor forward and reduce wheel slippage , where it would be difficult to gain traction for plough and disc operations . Heavy rice straw may be chopped and mixed with the soil to improve fertility and soil structure . Orchard Tilling :- Rotavator are used in vineyards , citrus groves and orchards because it is easy to control operating depth to prevent damage to trees or vine roots . They provides sufficient much to conserve moisture .Some rotavator models are built for offset operations . The offset permits working under trees .

22. Weed Control :- As many as 3-5 passes at 2-3 weeks interval may be required to completely eradicate annual and perennial weeds . Operate the rotavator with fast rotor speed and the shield raised so that the roots are thrown on the surface to die . Pasture renovation :- Pasture renovation with a rotary tiller involves breaking up and kills the sod , mixing residues in the soil , incorporations of fertilizers and herbicides . Levelling of the surface and preparations of seedbed. 22

23. Uses: It is a helpful agricultural tool that is used to prepare soil . A  rotavator  is a large piece of gardening equipment that is used to break up, churn, and aerate the soil before sowing seeds and bulbs in gardens. This multifunctional piece of farming machinery is a motorized machine that turns the soil using rotating blades.  Rotavator used to prepare the farming land suitable for sowing . Tractor rotavator also used for destroying weeds. 23

24. Rotavator is ideal for smooth and speedy preparation for root mixing fertilizer or compost into the soil crops , grain crops , orchards and cash crops . Rotary tiller increase the soil potency by mixing the residual of crops like wheat , cotton , sugarcane , and paddy . It conserves soil moisture and helps water distribution management as tilling can be done immediately after harvesting the previous crop . Tillage depth varies according to the moisture level of the soil . Tractor Rotavator use as a primary cum secondary tillage machine . 24

25. Operating method: STEP 1 25 Proper placement of the PTO into the rotavator This allows for transmission of mechanical force through the hydraulic fluid system to any location around the vehicle where a hydraulic motor will convert it back into rotary or linear mechanical force. STEP 2

26. 26 STEP 3 STEP 4 STEP 5 STEP 6

27. 27 STEP 6

28. 28

29. Advantages It offered a benefit of rapid seedbed preparation and reduced draft compared to conventional tillage. It saved 30 to 35% of the time and 20 to 25% in the cost of operation as compared to tillage by cultivator. It minimizes fuel consumption by 15% to 35%. Suitable for a banana, cotton, wheat, paddy, sugarcane, and vegetable cultivation 29

30. Used in light and medium soil conditions. Can be used up to a depth of 125 mm- 1500 mm. Prepares seed beds quickly and economically. Another advantage of looking rotavator for sale is that they are comparatively easier to operate than other types of agriculture machinery which performs a similar function. Suitable to use in dry or wetland cultivation

31. Sometimes can cause crop diseases to be locked in surface residues. Needs huge power from tractors. As the rotavator moves, parts of the weeds get scattered, these scattered parts can further lead to more growth of weeds. Disadvantages :- 31

32. Rotavator Maintenance: 32 A  rotavator  is meticulous and intricate machinery that needs proper care and maintenance to ensure its long, healthy and sound life. A rotary tiller’s engine oil and filter needs to be changed regularly owing to its task of digging up the soil. This should be done at least once a year or after 50 hours of use or if the oil visually appears to be dirty. The air filter needs to be cleaned regularly and the other parts need to be washed after each use to ensure optimum efficiency. Regular maintenance and inspection of the agricultural implement would not only tick the economic benefits reaping out of the machinery but would also not compromise the safety of all those involved in its operation.

33. Companies and products: 33 Our sponsored dealer Sailesh The average price of the rotavator lies between 1-1.10 lakhs.

34. About Services Portfolio Team Contact Ranit Sarkar Need presentation assistance? https ://www.linkedin.com/in/ranit-sarkar-83b295209/ mailto:[email protected] https ://t.me/Ranit_0_1 https://www.youtube.com/channel/UCirfpHbkvkM9l4K4MVYh-Pw

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