Straw stretching property test device

Abstract

The invention relates to a straw stretching property test device. The test device comprises a stretching mechanism, a power mechanism, a transmission mechanism, a clamping mechanism, a data information acquisition and transmission control platform and a machine frame base, wherein the clamping mechanism comprises an upper clamp unit tightly connected to the stretching mechanism and a lower clamp unit tightly connected to the machine frame base; the upper clamp unit and the lower clamp unit form a symmetrical structure; each clamp unit comprises a clamp main body; a connecting member tightly connected with the stretching mechanism / the machine frame base is arranged in the center at one end of each clamp main body; a threaded through hole is radially formed in each side at the other end of the clamp main body; an adjusting member capable of being screwed inwards / outwards is inserted into each threaded through hole; the inner end of each adjusting member is tightly connected with a clamping head member; the two clamping head members also form a symmetrical structure; each clamping head member comprises a pushing plate, a resin cushion layer, a rubber cushion layer and a sand paper cushion layer which are tightly connected to each adjusting member in sequence. The test device adapts to a stretching property test of different types of straws.

Description

technical field [0001] The invention relates to a test device for tensile properties, in particular to a test device for different types of straw tensile properties. Background technique [0002] The report of the 18th National Congress of the Communist Party of China clearly stated "strive to build a beautiful China". This year's Central Document No. 1 also made the deployment of "strengthening rural ecological construction, environmental protection and comprehensive improvement, and striving to build a beautiful countryside". Promoting the comprehensive and efficient utilization of straw involves not only the efficient conversion of materials and efficient energy cycle in the agricultural production system, but also the warmth of the household and the clean environment of the farmers' living system. The most important thing is related to the soil fertility and water and soil conservation in the entire agricultural ecosystem. , environmental safety and efficient use of rene...

AI Technical Summary

Problems solved by technology

Due to the unique texture and shape of straw, it is difficult to measure it accurately with the existing tensile test device, and the clamping problem in the process of straw tensile test is one of the important factors affecting its accurate measurement

The texture of straw is relatively soft and brittle. If the clamping mechanism is too tight and rigid, the straw is easy to break at the clamping position, and it is difficult to obtain an effective tensile fracture process, resulting in the inability to accurately measure the tensile properties of the straw.

If the clamping mechanism cannot effectively and tightly clamp, then for straws such as wheat and corn with a waxy layer on the surface, the straws will easily slip during the process of stretching and applying force, which will also lead to the inability to accurately measure the tensile properties of the straws

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