Flexible and adjustable biological straw lifting force measuring apparatus and measuring method

Abstract

The invention discloses a flexible and adjustable biological straw lifting force measuring apparatus which comprises a frame, a supporting rack and a stepping motor which are disposed on the frame, a first wire wheel disposed on an output shaft of the stepping motor, a second wire wheel disposed on the supporting rack, a lifting sleeve cylinder, a lifting rod, a steel wire rope with one end connected with the lifting rod, a pull force sensor disposed between the lifting sleeve cylinder and the lifting rod, a data acquisition card connected with a signal output end of the pull force sensor, and a controller connected with a control end of the stepping motor, wherein the other end of the steel wire rope is fixed onto the first wire wheel after being turned by the second wire wheel; a lifting clamp group are fixedly connected in the lifting sleeve cylinder through fastening bolts, and are positioned on one side of the supporting rack; and the first wire wheel is positioned on the other side of the supporting rack. The flexible and adjustable biological straw lifting force measuring apparatus helps to effectively reduce labor intensity of measurement operators, has good adaptability to outdoor tests, and the acquired data serve as references to the design of biological straw harvesting machines.

Description

technical field [0001] The invention relates to the technical field of measuring the mechanical properties of biological straw roots, in particular to a motorized and adjustable biological straw uplifting force measuring device and a measuring method. Background technique [0002] Biological straws such as hemp, saplings, tobacco, cotton, etc. are not only used to produce renewable biomass energy, but also can be used to make paper and wood-based panels, which has huge economic benefits. The root system of some biological straws grows quite well under the condition of suitable soil nutrients, water and soil quality, and is tightly combined with the soil, requiring a large pulling force to pull it out. At the same time, due to the inconsistent thickness of the main stem of biological straw and many branches, the manual harvesting is extremely intensive, so it is necessary to use biological straw harvesting machinery for harvesting. However, since the forces and angles requir...

AI Technical Summary

Problems solved by technology

However, most of the measuring devices so far are manually applied, so it is not only time-consuming and labor-intensive, but also the artificial force is unstable, it is difficult to ensure that the tension can be loaded at a uniform speed, and even torque is likely to be generated, and the measurement process has large errors

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