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Study on the Key Parts of Shallow-tiller and Its Force-testing System Based on Virtual Instruments

Author: ZhuKeLiang
Tutor: DuBing
School: China Agricultural University
Course: Agricultural Mechanization Engineering
Keywords: Conservation tillage Light pine Virtual Instrument Test System
CLC: S222.4
Type: Master's thesis
Year: 2001
Downloads: 122
Quote: 5
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Abstract


This topic is the subject of Sino-Australian cooperation an integral part of the \First, a detailed analysis of the shallow shovel operations force obtained the structural parameters of the shallow shovel width B the wing width b , thickness delta wing opening angle alpha cut the soil angle i and clearance angle epsilon . Its traction resistance . Devise a new narrow shallow wing shovel , the newly developed shallow shovel traction resistance is smaller than the existing shallow shovel traction resistance around 17.27 to 21.76% . Developed a measuring system based on virtual instrument technology to achieve data acquisition, analysis and processing automation . Dynamic random access and use the measuring system of shallow shovel traction resistance , calculate the average traction resistance , resistance to dynamic random traction power spectrum analysis . The results show that the shallow shovel traction resistance random signal with a smooth ergodic and approximate normal distribution . Also before and after the opener of the shallow loose traction resistance test results show that no-tillage no cover surface , shallow loose reduced by about 44.12% the short airfoil opener of the traction resistance , and light pine is the solution Free tillage planter buried an effective way to difficult problems . Experimental study on the effect of shallow loose jobs , mainly from light pine herbicidal effect , shallow loose on the surface roughness , stubble cover, temperature , soil moisture, bulk density and opener traction impact resistance and other aspects of the analysis . The results show that the shallow pine has excellent herbicidal effect , can significantly reduce the surface roughness , effectively improve the table - land temperature to reduce topsoil bulk density , reducing the traction resistance of the opener , and stubble cover and soil moisture are not large .

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CLC: > Agricultural Sciences > Agricultural Engineering > Agricultural machinery and implements > Plowing equipment > Hard work of the joint operating machinery
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