Design and performance test of image transmission remote control mower in closed orchard
Aiming at the narrow and airtight interior space of traditional canopy orchards,the existing lawn mowers are difficult to operate,and faced with the production problem that no machinery can be used,a small lawn mower with adjustable stubble height and flexible and convenient obstacle avoidance between plants was designed.On the basis of fully analyzing the planting mode of the closed orchard and the agronomic requirements of mowing,the overall design scheme of the mower was determined.The key components of the lawn mower(cutter height adjustment mechanism,obstacle avoidance cutting mechanism between plants,remote control and image transmission system,etc.)were designed and selected.And the whole machine integration and performance test were completed.The basic performance test results show that the size of the lawn mower(length × width × height)is 1.9m × 1.7 m× 0.7 m,the stubble height adjustment range is 30～110 mm,and the obstacle avoidance rate between plants is 100％.The transmission distance is greater than 110 m.At the same time,taking forward rotation speed,cutter head rotation speed,cutting stubble height as test factors,cutting stability coefficient,cutting width utilization rate,missed cutting rate as test performance indicators,orthogonal tests were carried out,and the significance of test results was analyzed.The results show that the primary and secondary order of the influence of each factor on the performance indicators such as stubble stability coefficient,cutting width utilization rate and missed cutting rate are forward speed,cutter head rotation speed and cutting stubble height.The determined optimal scheme is the forward speed of 0.6 m/s,the cutter head rotation speed of 3000 r/min,and the cutting stubble height of 70 mm,and the verification test of the optimal scheme was carried out.The results show that the designed lawn mower has a stubble stability coefficient of 93.2％,a cutting width utilization rate of 99.3％and a missed cutting rate of 0.5％under this scheme,which can meet the actual operation requirements of the closed orchard.
万方数据
维普
