Geogrid stretching and holding device

Abstract

The invention discloses a geogrid stretching and holding device, which comprises a substrate, and a prepressing device, a clamping device and a fixing device which are fixedly arranged on the substrate, wherein the clamping device and the fixing device are fixedly arranged on one side of the substrate, and the prepressing device is fixedly arranged on the other side of the substrate; the prepressing device consists of a limiting seat and a prepressing seat; the clamping device consists of an eccentric wheel and a stop block, wherein a pressure rod is further fixedly arranged on the eccentric wheel; the fixing device further comprises a base fixedly arranged on the surface of the substrate, a fixed seat is fixedly arranged on the other end of the base, a guide groove is formed in one side, close to the base, of the fixed seat, a fixed groove is formed in the other side of the fixed seat, and an end cover is arranged outside the fixed groove. According to the geogrid stretching and holding device, the holding strength on a geogrid is high and can meet the detection requirement on the tensile strength of the geogrid, the trueness and accuracy of the test data can be guaranteed, the damage to the geogrid due to overlarge shear cannot be caused, the whole device has a simple structure, the manufacturing cost is low, the use and operation are convenient and fast, so that the geogrid stretching and holding device has good application and popularization values.

Description

technical field [0001] The invention belongs to the field of geogrids, in particular to a stretching and clamping device for geogrids. Background technique [0002] At present, the clamp structure adopted by the known geogrid is composed of mechanical connecting columns and jaws. The tested geogrid splines are connected to the tensile testing machine through the jaws and mechanical connecting columns, and the tensile strength and deformation of the geogrid are detected through the tensile testing machine. However, most specifications of geogrids, especially steel-plastic geogrids, have relatively high tensile strength, and the combination of mechanical connecting columns and jaws is easy to fail when the tensile strength of geogrids is not detected. The spline will be damaged due to excessive shear force of the jaws or slippage due to too small shear force, and the requirement of testing the tensile strength of the geogrid has not been realized, thus distorting the test dat...

AI Technical Summary

Problems solved by technology

However, most specifications of geogrids, especially steel-plastic geogrids, have relatively high tensile strength, and the combination of mechanical connecting columns and jaws is easy to fail when the tensile strength of geogrids is not detected. The spline will be damaged due to excessive shear force of the jaws or slippage due to too small shear force, and the requirement of testing the tensile strength of the geogrid has not been fulfilled, thus distorting the test data

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