Vane shear test loading device

Abstract

The invention provides a vane shear test loading device which comprises a driving portion, a torque measurement portion and a control portion. Each of the driving portion and the torque measurement portion is connected with the control portion through a signal control connecting wire. The whole device is connected with an external power supply through a power wire. A stepping motor and a controller are both fixed on a base plate, a steady bearing and a bearing sleeve are fixed on the base plate through a support, and a protective cover is arranged on the base plate. The vane shear test loading device has the advantages that a driving device and a measuring and reading device are integrated at one position by the aid of the device, so that the vane shear test loading device is small in size, lightweight, easy to carry, stable in loading rate, accurate in test data, few in influencing factors and wide in application range, cable connection in a traditional electrical measurement instrument is omitted, test efficiency is improved, data shifting is overcome, errors during reading of an mechanical instrument by manual hand-cranking are eliminated; besides, the vane shear test loading device can accurately measure test data of soft clay with strengths, is suitable for test detection in engineering investigation of various waters, and particularly for detection of adopting shipborne exploration platforms to perform marine engineering geologic investigation.

Description

technical field [0001] The device of the invention is an in-situ testing device for engineering geological surveys applied to water areas and land areas, and is a cross plate shear test loading device capable of measuring the shear strength of soft clay soil. Background technique [0002] In water engineering projects such as ports, water conservancy, highways, bridges, and artificial islands, the shear strength of soft soil foundations is a very important engineering index. At present, there are many kinds of measuring instruments for this index at home and abroad, which are generally divided into two types: mechanical type and electric measuring type: the mechanical type uses manual manual reading, the shaking speed is unstable, and the reading error is large; the electric measuring type The sensor is at the head of the board, and is connected to the outside through the cable passing through the drill pipe. When the test depth is deep, the cable needs to be frequently thre...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of measuring instruments for this index at home and abroad, which are generally divided into two types: mechanical type and electric measuring type: the mechanical type uses manual manual reading, the shaking speed is unstable, and the reading error is large; the electric measuring type The sensor is at the head of the board, and is connected to the outside through the cable passing through the drill pipe. When the test depth is deep, the cable needs to be frequently threaded into the drill pipe. Serious drift

Therefore, the current traditional equipment has a very limited practical application range, especially in the water environment affected by waves and currents, the measured values ​​are mostly discrete or distorted, the work efficiency is low, and the test error is large

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