Method and device for measuring soil penetration characteristic based on instantaneous acceleration detection

A detection device and acceleration technology, applied in the direction of measuring device, strength characteristics, test material hardness, etc., can solve the problems of large error range, low measurement accuracy, single function, etc., to explain the problem of soil resistance, accurate research results, and simplify complexity degree of effect

CN106885747APending Publication Date: 2017-06-23NORTHEAST AGRICULTURAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-06-23

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Abstract

The invention discloses a method and a device for measuring a soil penetration characteristic based on instantaneous acceleration detection, specifically a method and a device for measuring soil penetration resistance and then obtaining soil physical properties. The device mainly comprises an acceleration detection device, a handle, a guide rod, impact weights, an adapter sleeve, a penetrating rod, a guide support and the like. The penetrating rod penetrates into soil, the acceleration detection device is used for detecting acceleration change in the descending process of the whole device, and after the whole operation process is finished, data can be read in a computer for further analysis processing. The initial velocities when the penetrating rod penetrates into the soil are different by changing parameters in the descending process, so that the velocities of a conical head reaching the same depth are different, and then the relation between mathematical model discussion velocity and penetration resistance can be established, a series of characteristic parameters of soil are researched, and the device has significance for guiding agricultural production. Speed-changing penetration, automatic recording and data storage are realized, and the device is high in measuring precision and high in work efficiency.
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Description

technical field

[0001] The invention relates to a measuring method and a device for measuring soil mechanical physical properties, in particular to a measuring method and a device for measuring the resistance of a cone head of a soil resistance meter. Background technique

[0002] In agricultural production, soil compaction is not only closely related to crop yield, seed germination soil breaking rate and plant root development, but also directly affects soil moisture transfer. The volumetric mass of soil increases, and the soil ventilation pores decrease, which leads to aggravated soil erosion, increased soil resistance, and hindered root growth of crops, which in turn leads to reduced crop yield and degradation of farmland quality. In industrial production, such as water conservancy projects, construction and road bridges, we need a more compact soil to make the working foundation more stable and enhance the overall structural stability after construction. Cone index is a...

Examples

Embodiment

[0033] Such as Figure 1~3As shown, a soil penetration characteristic measurement device based on transient acceleration detection includes a handle (1), an acceleration detection device (2), a limit ring (3), an impact weight (5), and a guide rod (6) , buffer pad (7), connecting sleeve (8), guide bracket (9), outrigger (10), spirit level (11), guide sleeve (12), penetrating rod (13), conical penetrating head (14 ).

[0034] Such as figure 1 As shown, the handle (1) of the present invention is connected to the guide rod (6) by threads, and the handle (1) can be held by hand during the experiment to prevent the entire device from tilting. The surface of the handle (1) is engraved with patterns to increase the Friction force, the impact weight (5) is set on the guide rod (6), there are two methods in the experiment, the first method is to hold the weight (5) by hand during the experiment, and the limit ring (3) Move to a certain height and then lock it. The guide rod (6) is m...