The Design Of The Electric All-wheel-drive Farm Machinery Soil Bin Testing Car

Soil bin testing (hereinafter referred to as soil tank lorry) foragricultural machinery and machine or component test of main equipment,its characteristic is: short test period, influenced by the outside world issmall, can be manually adjusting experimental factors, USES theadvanced computer aided testing system, will greatly improve the testprecision, obtain accurate effective test data. On the basis of summarizingthe predecessors’ technology, we successfully developed a kind of electricall-wheel-drive farm machinery soil bin testing car. The soil bin testvehicle adopts frequency conversion motor drive four-wheelself-propelled structure before and after the bridge, with rubber tire in thesoil bin have been completed on both sides of the rut. By adjusting thedriving frequency conversion motor speed control driving speed, Insetting the elastic limit the orbit round running deviation in case. Drivenby hydraulic pump station hydraulic motor power output. Test vehicle ismainly composed of frame, driving system, power output system,hydraulic system, soil restoration spray system, control system and brakesystem parts, can satisfy the soil cultivation of experimental study on thecomponents and small agricultural machinery. Front and rear, respectively,to provide a set of test machine hydraulic suspension system, the unit under test can tank lorry on the soil horizontal and vertical directionadjustment. Design of integrated agricultural machinery dynamic signaltest and analysis system of record, complete the simulation test study ofsoil tillage parts. For traction speed and power output shaft speed forcontinuous automatic control; Can adjust force, a deep tillage, the tractionresistance (horizontal traction, hanging force), the power output shafttorque and rotation of power, traction power for collection or processing.The new PLC control, configuration screen monitoring technology, andhigh precision encoding speed sensors, hall switch sensor multi-point testmeans such as mandatory limit, experimental realization of automaticcontrol.Based on the computer, the virtual instrument technology andhigh-speed digital camera technology, the design of integrated intelligentdynamic signal test and analysis system and test monitoring recordsystem, and can be compared to tillage soil laboratory and theinternational advanced level. Test system includes the required signaldisposal device, dc voltage amplifier, mixed filter, A/D converter, buffermemory, as well as sampling control and computer communicationinterface, configure the corresponding control software and analysissoftware, Real-time test data collection and processing, including thecalculated maximum, minimum, average, mean square error, curve fitting,such as time domain analysis, such as amplitude spectrum, powerspectrum calculation and frequency domain analysis, and is available for online analysis used afterwards; Automatic display to print all theprocessing result. At the same time, through the image device andadjustable angles focusing observation and record test.