Abstract:
This research studied the design and construction of a chemical spraying vehicle using a mechanical arm. For farmers who grow lemons, mangoes, guava, palms or other plants that have similar characteristics. To keep agricultural crops safe from pests such as insects, fungal diseases, etc. by spraying chemicals. and reduce fatigue from backpacking and a hose pump and it is important to reduce close contact with chemical droplets from chemical spraying. which can cause disease.
Chemical spraying truck using a mechanical arm Can see operations in 360 degrees and has a mechanical arm for spraying chemicals at the back of the vehicle. Chemical solution tank size 120 liters. When sprayed on a mango tree with a height of 2.5 meters and a canopy width of 2 meters, an area of 1 rai has 36 mango trees, use 71.5 liters of chemical solution. Motor used to drive the mechanical arm. that It uses an average current of 6.79 amps, with the first robot arm motor using a current of 2.90 amps, the second robot arm motor using a current of 1.25 amps. The third motor uses 0.77 amps. The fourth motor uses 1.56 amps. The fifth motor uses 0.31 amps. The battery used in the robot arm has a capacity of 45 amps. mp./hour In one battery charge, the mechanical arm can be used to spray continuously for no more than 4 rai or no more than 4 hours, and the cooling fan can reduce the temperature in the driver's cabin by 4 degrees Celsius.