BIGMOW

 

BigMow is the first battery powered robotic lawn mower to be capable of maintaining five to seven acres of grass. The Bigmow automatically mows around the clock keeping your lawn looking perfectly manicured. The freshly mowed lawn isn't the only benefit of this robot. There are cost reductions, thatch elimination, energy reduction, pollution elimination and best of all no more raking of clippings.

Bigmow, since it is mowing day and night, never allows the grass to grow much before it is cut again.  The blades of grass grow between one sixteenth and one eighth of an inch before being cut by the razor sharp blades.  This eliminates the need to collect the grass clippings.  The clippings are so small they decompose very quickly and naturally, eliminating the build up of thatch and the need for raking.   The decomposition also returns the nutrients back into the soil creating a fuller, greener lawn.  The finely cut tips do not lay in clumps that cause mold and bacteria to grow damaging the lawn.  Since you have no need to bag the clipping you are no longer adding to the land fill problems.

The BigMow robotic lawn mower has an onboard computer that sets the speed, direction, pattern, and the decision making for the unit to return to its charging station.  The robotic lawn mower also has a sonar unit that detects objects in its pathway.  Once an object is detected the BigMow slows to half speed.  The BigMow then bumps the object and turns and goes in a different direction.  The BigMow uses a perimeter wire that is connected to its charging station to set the boundaries of the property.  The BigMow randomly or systematically cuts the grass inside this boundary limit.  When the BigMow crosses the boundary wire it stops and turns and then travels in another direction.

After mowing for one to two hours the batteries are discharged to a low state and the onboard computer makes the decision to return BigMow to the charging station.  The BigMow seeks the boundary wire and follows it to the charging station. The BigMow stays at the charging station for an hour to charge.  Once the charging is complete another decision must be made.  The computer must decide if the grass had grown enough during its last mowing cycle.  If it had the unit will return to mowing.  If the grass had not grown enough the BigMow will go into a rest cycle and wait for the grass to grow before returning to cutting the lawn.   

The Bigmow runs on (3) 24V NiCad rechargeable batteries. The charging station itself runs on either 110V or 220V and is hardwired to the breaker box.  The charging station also has detection sensing built into it.  When the BigMow get into trouble and a fault occurs, the light on the top of the charging station will start to flash until the fault is cleared.  This enable quick detection of any problems.
 
The BigMow cutting system is made up of five floating heads each powered by a 24V brushless motors.  Each floating head has a circular disc that spins at 3400 RPM.  Each disc has three very sharp cutting blades.  The blades are made to cut just the tips of the grass with a clean and swift action.  The cuttings are dropped straight down to decompose back into the soil. 
The nutrition generated by the decomposition of the cutting helps to reduce the future needs of chemical nutrients.  This also helps to reduce environmental pollution and labor.

BigMow Specifications

Cutting System	5 discs with 3 blades
Cutting Height	From 0.75" to 3.75"
Cutting Disc Motor	3 phase, 24 volt, 50 watt
Rotation Speed	3700 RPM
Back Wheel Motor	24 volt, 50 watt
Maintenance Capacity	5-7 acres, +/- 20 %
Mowing Speed (max)	3.25 feet per second
Mowing Area	39,000 square feet per hour
Weight	105 pounds
Length	51.2"
Height	19.7"
Width	47.2"
Recharging Station	30 volt AC
Peripheral Wire	0.5 volt, 50mA
Transformer	230/15 volt, double insulated
Consumption	100 watts/hour

 

BigMow Benefits

• Reduce lawn maintenance labor
• Cost reduction
  • The high cost of lawn maintenance is no secret and with the rise in gasoline prices they will only continue to rise. The electric powered Bigmow eliminates both the labor and gasoline expenses.
• More time to do other things
  • If you're mowing the lawn yourself, start up the Bigmow and let it run. Use the time to spend with your family, friends, or other aspects of your business.
    
    
• Environmentally friendly

  • Electric powered
    • The Bigmow runs on (3) 24V NiCad rechargeable batteries. When the batteries reach a low level, the Big Mow automatically returns to the charging station where it will stay until the batteries are completely recharged. The charging station itself runs on either 110V or 220V and is hardwired to the breaker box.
      
        
      
  • No bagging and dumping of clippings
    • Since the Big Mow runs around the clock it uses the three razor blades on each of the 5 floating heads to cut the tips of the grass blades so there is no stress to the grass and the small clippings decompose very quickly. This eliminates the need to rake and bag the grass clippings while providing natural nutrients to the lawn.
      
      
      
  • Natural fertilzer
    • Since the small clippings decompose back into the soil, there is less need for chemical fertilizers. This will reduce the cost of maintenance even further while reducing the toxic chemicals applied to your lawn.
      

• Manicured lawns all the time
• Big Mow will run 24 hours a day, 7 days a week except when it is charging or unless there is not enough resistance on the blades (meaning the grass hasn’t grown enough). In that case, the Big Mow will wait a few hours, then go back out. The constant mowing keeps the lawn looking great while the natural fertilization creates a thicker greener lawn.