PERFORMANCE EVALUATION OF PORTABLE MACHINE FOR TURF GRASS SHEAR

Ahmed, R. A. A.

doi:10.21608/mjae.2018.96032

PERFORMANCE EVALUATION OF PORTABLE MACHINE FOR TURF GRASS SHEAR

Document Type : Original Article

Author

R. A. A. Ahmed

Assoc. Prof., of Agri. mach. and power Eng. Dept., Fac. of Ag. Eng.,, Al-Azhar Univ., Cairo, Egypt.

10.21608/mjae.2018.96032

Abstract

The main objective of this study is to evaluation and develop the cutter blade of the portable machine for turf grass shear to increase its shearing efficiency, used in garden and club selfsame small areas and estimate the operation cost. The performance of portable machine for turf grass shear in terms of field efficiency, cutting efficiency, energy requirements and shearing cost were investigated dependent on change in kinematics parameter (ratio of knife peripheral velocity to machine forward speed), knife types (fixed imported cutting blades and free modified free cutting blades ) with three and four cutter blade during the shearing operation .The operating shear a kinematic parameter of 290 which corresponded to forward speed of 0.25 m/s, knife velocity of 72 m/s was the optimum. The best adjusting of the knife of the machine at cutting height of 4 cm with moisture content 40 % was used free modified knife with three cutter blade.

Main Subjects

Agricultural Power and Machinery Engineering

References

Awady, M.N. ( 1978 ). Tractor and farm machinery. Text book, Col.of Agric.; Ain Shams Univ.: 164 -167.

Awady, M.N.; E.Y. Ghoneim. And A.l .Hashish (1982 ). A critical comparison between wheat combine harvesters under Egyption conditions. Res. Bull. No. 1920. Ain Shams Univ.; 1-13.

EL-Danasory, M.M., (1990).Study of some design and operation parameters of reciprocating mowers for cutting stalk. Ph.D. Thesis Ag.Eng .Dept.,Fac.of Ag., Cairo Univ. Egypt

EL-Sahar, E.A., (1988). Design of harvester appropriate for Egyptian . MSe. Thesis. Fac. of Ag. Ain Shams Univ. Egypt.

Habieb, R.A. (2002). Design and performance of cutting tools of chopping machines of agricultural crop residues, Ph. D. Thesis, Fac. of Eng., Cairo University.

Imababi, A.T. (1992). Design and development of rotary harvester for harvesting sesame crop. Ph.D.Thesis Ag. Eng.Dept., Fac. of Ag., Cairo Univ. Eygpt.

Kepner, R.A.;R. Bainer; and E.L.Barger (1982) Principle of farm machinery. 3^rd ed., Te AVI pub. Co., U.S.A: 341- 357.

Morad, M.M (1981)A study on the energy requirements for the cutting operation of different kinds of plants. Masc. Thesis, Agric. Mech. Dept., Fac. of Ag ric., Zagazig Univ.

Morad, M. M ( 1995) Optimizing the rotary mower kinematic parameter for minimum mowing cost. Misr J. Ag. Eng., 12(2): 353-363.

Prosod, J. and C.P Gupta (1973). Mechanical properties of maize stalk as related to harvesting. J.Agric.Eng., Res., 20:79-87