Lawn mower presentation

A Grass Cutting Machine

1. MAHAKAL INSTITUTE OF TECHNOLOGY & MANAGEMENT, UJJAIN A Minor Project Presentation on FABRICATION OF LAWN MOWER Guided by :- Submitted by :- Mr. Ankur Dave Asst. Professor Session 2014-2015 Ashwani Dixit Karan Singh Rathore (7 th sem. M.E.- I)

2. CONTENTS Introduction . Our Idea about Lawn Mower . Design Of Lawn Mower . Parts Of Lawn Mower . Specifications . Expenses . Applications . Advantage & Disadvantage . Conclusion . References .

3. Introduction A  lawn mower  is a machine that uses one or more revolving blades to cut a lawn to an even height. The blades may be powered either by hand pushing the mower forward to operate the mechanical blade(s), or may have an electric motor or an internal combustion engine to spin their blades. Some mowers also include other abilities, like mulching or collecting their clippings.

4. Our Idea about Lawn Mower An electrical Lawn Mower is more suitable & easy to use than the lawn mower with an engine, so we are making an electrical lawn mower with an electric motor, which is providing the high speed rotation to the blades. Cordless electric mowers are powered by a 12-volt rechargeable batteries. Typically , more batteries mean more run time and/or power. Batteries can be in the interior of the lawn mower or on the outside. If on the outside, the depleted batteries can be quickly swapped with recharged batteries. Cordless mowers have the maneuverability of a gasoline powered mower and the environmental friendliness of a corded electric mower.

5. Design Of Lawn Mower The design of an electrical lawn mower contents a blades, bed knife, body frame, wheels, push handle, bag, & motor . The power system there are many Options, but we are using rechargeable battery powered motor, which is attached to the cutting blades. Sizing the battery will depend on what we are powering, specifically the motors. Like batteries, there is a range of motors to choose from. We went with 36 volt motor with integrated gear heads. Cutter deck housing  — This houses the blade and the drive system of the mower. It is shaped to effectively eject the grass clippings from the mower. Blade mounting and drive system   — The blade of a rotary mower is usually mounted directly to the motor shaft. Mower blade  — A rotary mower generally has two blades that rotates horizontally. The blade features edges that slightly curved up to generate a continuous air flow as the blade rotates, thus creating a sucking and tearing action.

6. Picture :-

7. The main parts of a cylinder or reel mower are :- Blade - C onsist of numerous (2 to 3) blades that are attached to a rotating shaft. The blades rotate, creating a cutting motion. Bed knife   - I s the stationary cutting mechanism of a mower . Body frame   - T he main structural frame of the mower onto which the other parts of the mower are mounted. Wheels   - T hese help propel the mower in action. Generally, our lawn mowers have four wheels . Push handle   - The "power source" of a manually operated mower. This is a sturdy T-shape handle that is connected to the frame, wheels and blade chamber. Motor - The power source of a lawn mower that is powered by Battery & We are using small DC motor . Bag – The bag is carried catted grass clippings. Parts of Lawn Mower :-

8. Voltage (volts)  12 Assembled Depth (in.)  61 in  Assembled Height (in.)  41.5 in  Assembled Width (in.)  21.5 in  Blade Length (In.)  13 in  Features  Bagger , push handle , Four wheels , Tool-free adjustments  Charge time (hours)  12  Cordless  Yes  Cutting Options  Bag , Mulch   Cutting Width  13 in  Fuel Type  Rechargeable Battery  Included  Bag Kit, Batteries   Lawn Mower Type  Walk Behind  Manual Push Mower Type  Electric  Cutting height (in.)  2 .5   Mower Deck Width  20 in  Mulching Capability  Yes  Number of adjustable handlebar positions  2 Product Weight (lb.)  90 lb.  Rear wheel size (in.)  9  Run time (min.)  45  min ./Fully Charged Battery Size of Yard  1/4 - 1/2 Acre  Start Type  Electric  Walk Behind Mower Type  Manual Push  Specifications :-

9. Cost of each Parts :- Expenses :- Parts Price (Approx.) In ₹ Motor - ₹ 300 Blade s - ₹ 200 Body Frame - ₹ 9 00 Wheels - ₹ 400 Battery - ₹ 9 00 Plywood - ₹ 150 Miscellaneous - ₹ 500 TOTEL -- ₹ 3350

10. There are several types of mowers, each suited to a particular scale and purpose. The smaller types are pushed by human user and are suitable for small residential lawns and gardens. Lawn mowers are widely used in all sports grounds. Lawn mowers become a more efficient alternative to the domesticated grazing animals. It is widely used to cut small grasses & it can also be used for cutting small plants and also used for trimming grass of play grounds and sports ground. Applications :-

11. It is easy to use , because it is cordless. With Battery powered Lawn mowers, there is no more messy oil & smelly gasoline. Now we are safety with no pollutants emitted. There are also no air filters & spark plugs to bother it. The cost of electricity to recharge the battery is minimal compared to the high cost of gasoline, oil, air filters, & sparkplugs. Advantage & Disadvantage:- Advantages :- Disadvantages :- It is costly. An electric mower is more expensive. The eventual disposal of worn-out batteries is problematic , & the motors in cordless mower tend to be less powerful than gasoline motors of the same total weight (including batteries) . Recharging of lawn mower batteries can take from 8 to 16 hours with only an hour of operation. We need to replace the batteries after so many hours of operation. As a result of incorrect use, fluid can leak from the rechargeable battery. Avoid contact with the fluid.

12. A lawn mower which is simply called a grass cutter machine become very popular today and it very commonly used for furnishing soft grasses. Now it is necessary for cleaning gardens. Since it is easily operating machine so now it is used for various applications. Conclusion :-

13. www.wikipedia.com/electrical lawn mower . Kinnander, Ola (2012 ).  "Rise of the Lawn-Cutting Machines" .  Bloomberg Businessweek . Peoplepoweredmachines.com Reference :- THANK YOU !!!