Development of Walking Electric Lawn Mower for Ramphan Community, Tha Mai District Chanthaburi Province

การพัฒนาเครื่องตัดหญ้าพลังงานไฟฟ้าชนิดเข็นเดินตาม สำหรับกลุ่มชุมชนตำบลรำพัน อำเภอท่าใหม่ จังหวัดจันทบุรี

Abstract

          This research aimed to develop a walking electric mower for the Ramphan community, Tha Mai district, Chanthaburi province. This machine was used to eliminate some weed in the gardens, decrease the fuel cost when compare to the traditional mower, reduce the pollution and it is environmentally friendly. The size of mover body was 40, 120 and 100 cm. The range between ground to mover body was 6 cm. Two wheels size of 6.5 inch was used to move by pushing. The total mower weight was 18 kg. The mower was conducted with 24 V and 20 Ah of lithium-ion phosphate battery that use as the power supply for the DC electric motor type 24 V and 350 W. The DC electric motor was used to supply power to the mower blade with a speed of 2,750 rpm. The working time of mover was 2 h per a battery charging while the time for charging the battery was 4 h. From the mower test by cutting grass for the area 1 job or 400 cm², the result show that the electric mower and fuel mower took the similar time period to cut grass around 2 h. The electrical cost and fuel cost were 4.11 and 41.89 Baht (0.8 L), respectively. The payback period of the mower was 0.54 year.