Device for measuring pull-out force and displacement by in-situ pulling of plants

Abstract

A drawing force and displacement measuring device during plant in-situ drawing comprises a three-legged support. A lower plate is fixedly arranged at the top end of the three-legged support. The lower plate and an upper plate form a frame structure. At least one guiding column is arranged between the lower plate and the upper plate. A middle plate is arranged on the guiding column in a sliding mode. A displacement sensor is arranged between the middle plate and the lower plate or between the middle plate and the upper plate. The lower end of a pulling rod penetrates through the lower plate and is connected with a clamp through a steel wire rope. The upper end of the pulling rod is fixedly connected with the lower end of a lead screw which penetrates through the middle plate and is matched in a thread mode with a lifting nut which is fixedly arranged on the upper plate. The lead screw and the middle plate are connected in a rotatable-and-none-axial-displacement node. The upper end of the lead screw is fixedly connected with a hand wheel. A stress sensor is arranged between the pulling rod and the lead screw or between the pulling rod and the steel wire rope. According to the device, the displacement sensor and the stress sensor which are arranged at different positions at the same time are used so that the drawing force value and the displacement value during plant drawing can be directly read conveniently.

Description

technical field [0001] The invention relates to a measuring device, in particular to a device for measuring the pulling force and displacement of a plant in situ. Background technique [0002] During the implementation of highways, railways, water conservancy, electric power, mining and other projects, a large number of excavations are often accompanied, which destroys the original vegetation cover, resulting in a large amount of bare land and causing a series of ecological and environmental problems. For these exposed slopes, ecological slope protection technology has a broad application space in the protection of these exposed slopes. Plant roots have the functions of reinforcement and reinforcement, which can bind the surrounding soil tightly and have a certain supporting effect. In the slope ecological protection project, the in-situ pull test of plants is usually used as an index to evaluate the contribution of plant roots to the stability of slope soil. [0003] In th...

AI Technical Summary

Problems solved by technology

[0003] In the in-situ pull-out test of plants, it is often necessary to measure the pull-out force of the plant root system. If a spring tension meter and a tape measure are used, it is difficult to fix the plant, and it is also difficult to read the pull force accurately, and it is impossible to measure the plant instantaneously. Displacement during the drawing process, which not only makes the experimental data inaccurate, but also brings great operational difficulties to the user

Images