Design And Experimental Study On Mustard Harvester In Hilly And Mountainous Areas Of Fuling Area

Pickled mustard is a special agricultural product in China,which is rich in a variety of amino acids needed by human body.Fuling pickled mustard made from its stem tumor has crisp and tender texture and unique flavor,and is deeply loved by the public.However,at present,the harvest of mustard is still dominated by manual harvest,and the harvest period of mustard is short,which is concentrated from one week before the Spring Festival to one week after the festival every year.Manual harvest has high labor intensity,low efficiency and high cost.The harvest of mustard has seriously restricted the development of mustard industry in Chongqing.Therefore,aiming at the difficulty of mustard harvesting in Hilly and mountainous areas of Chongqing,a mustard harvester suitable for hilly and mountainous areas is developed,studied and tested:(1)The planting agronomy and harvest quality requirements of mustard in Fuling area of Chongqing were investigated.It was determined that the harvest mode was reciprocating cutting and harvest,and the field walking mode was crawler walking device.(2)The local planting variety "Fuza No.2" in Fuling was selected as the test object to measure the geometric parameters such as the quality,stem nodule diameter,stem nodule length,shortened stem diameter and the height from the ground of shortened stem of mustard,and the compressive strength and maximum shear force of shortened stem of mustard were measured through the test,It provides data support for the design calculation and subsequent simulation of the crank rocker mechanism of the harvesting device.(3)According to the relevant data,the key components of the mustard harvester are studied and designed,the sliding cutting angle of the blade is determined to be 30°,the kinematics of the harvesting device is analyzed,the three-dimensional model of the mustard harvester is established in Solid Works software,the interference inspection and centroid measurement are completed,and the analysis,verification and calculation of driving performance are completed.(4)The static analysis and modal analysis of key components are carried out by ANSYS Workbench software,and the kinematic simulation analysis of the harvest process is carried out by ADAMS software.(5)The prototype was developed and field experiments were carried out.The experimental results show that the prototype has good walking effect on the slope of 10°,and the field trafficability of mustard is good.When the operation speed is 0.8m/s and the reciprocating cutting frequency is 200 times / min,the harvest success rate is 77%,which can basically meet the requirements of mustard harvest in the hilly and mountainous areas of Fuling,Chongqing.