Auxiliary device for soil bulk density collection

Abstract

The utility model relates to an auxiliary device for soil bulk density collection, which comprises a handle, a bow arm and a bowstring, the bow arm is arranged on the handle and is integrated with the handle, two arm ends of the bow arm are respectively provided with a line hole, and the bowstring is tightly arranged on the two line holes. The cutting ring has the advantages that the sharp fishing line is adopted to replace a cutting edge, redundant soil samples outside the cutting ring are cut off, and the two technical problems of cutting edge adhesion and cutter face compression are solved. Production is convenient, manufacturing cost is low, user operation is easy, and efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling technology, specifically to an auxiliary device for soil bulk density sampling. Background Technology

[0002] Soil bulk density is measured to understand soil structure, aeration, permeability, and water retention capacity; that is, the mass of dry soil per unit volume of undisturbed soil (g / cm³). 3 Soil samples for bulk density testing are collected using a specialized ring cutter, but excess soil at both ends of the ring cutter must be removed while preserving the original shape of the soil inside. Currently, a relatively sharp fruit knife is commonly used for this purpose, but three problems have been found during operation: first, some soil adheres to the blade, causing voids in the soil inside the ring cutter, preventing it from being completely filled; second, the blade surface also has a compacting effect on the soil inside the ring cutter, failing to completely preserve the original shape of the soil; and third, very skilled operation is required, otherwise the work efficiency is very low. The impact is particularly pronounced when the soil moisture content is high during sampling, ultimately affecting the accuracy of the test results. Therefore, this invention application is hereby filed. Utility Model Content

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides an auxiliary device for soil bulk density sampling, which can improve the above deficiencies.

[0004] This utility model relates to an auxiliary device for collecting soil bulk density, including a handle, a bow arm and a bowstring. The bow arm is mounted on the handle and is an integral structure with the handle. Wire holes are respectively provided on the two ends of the bow arm, and the bowstring is tautly mounted on the two wire holes.

[0005] Furthermore, the bending shape of the bow arm is non-circular.

[0006] Furthermore, the distance between the two arm ends is not less than 80 mm.

[0007] Furthermore, the diameter of the wire hole is 1 mm.

[0008] Furthermore, there is a multiple looping structure between the bowstring end and the wire hole, which is fixed with adhesive.

[0009] Furthermore, the loop structure consists of a bowstring closely attached to the front and back of the arm end, as well as a side ridge and a wire hole formed between the front and back.

[0010] Furthermore, the bowstring is a fishing line.

[0011] Furthermore, a handle hole is provided on the bow arm.

[0012] The advantage of this invention lies in using a sharp fishing line instead of a blade to cut away excess soil sample from the outside of the ring cutter, thus solving the two technical problems of blade adhesion and blade surface pressure. It is easy to produce, inexpensive, and simple and efficient for users to operate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a diagram showing the connection between the bow arm and the bowstring.

[0015] Diagram: 1. Handle, 2. Bow arm, 3. Wire hole, 4. Bow string, 5. Handle hole, 6. Adhesive layer. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0017] like Figure 1-2 As shown, this utility model relates to an auxiliary device for collecting soil bulk density, including a handle 1, a bow arm 2 and a bowstring 4. The bow arm is set on the handle and is an integral structure with the handle. It can be made of plastic or metal and must have a certain strength. The two ends of the bow arm are respectively provided with wire holes, and the bowstring is tautly set on the two wire holes.

[0018] As a technical improvement, the bow arm is not circular but bow-shaped, and the distance between the ends of the arms is less than the vertical height from the highest point of the bow arm to the end of the arm.

[0019] In the existing technology, since the two most widely used ring cutter diameter specifications are 50.4mm and 70mm, the distance between the two arm ends is not less than 80mm. Adopting a design of not less than 80mm is equivalent to increasing the cutting surface.

[0020] As a technical improvement, the diameter of the wire hole is 1 mm.

[0021] like Figure 2 As a technical improvement, the bowstring end has a multiple looping structure with respect to the wire hole and is fixed by an adhesive layer 6, wherein the adhesive layer is a strong adhesive.

[0022] As a technical improvement, the loop structure is formed by the bowstring closely adhering to the front and back of the arm end, as well as the side ridges and wire holes formed between the front and back.

[0023] As a technical improvement, the bowstring is a fishing line. A high-quality fishing line should be used, and the thinner the better, while ensuring strength. It is recommended to use a No. 1 or No. 2 fishing line, where the standard diameter of No. 1 fishing line is 0.165mm and the standard diameter of No. 2 fishing line is 0.235mm. The two ends are taut after passing through the line hole.

[0024] As a technical improvement, a handle hole 5 is provided on the bow arm. This design is simple and ingenious. By cutting the fishing line, the contact area between the fishing line and the soil is small, avoiding the problem of soil sticking. However, due to the friction between the soil and the blade surface caused by the cutting, the cutting resistance is increased, which can easily lead to unskilled and inconsistent operation. At the same time, because the blade has a certain height, there is also a compaction effect on the soil inside the ring cutter during cutting, which cannot completely maintain the original shape of the soil. The present invention solves the shortcomings of the prior art. It solves the above three problems at the same time through a new auxiliary device and soil cutting tool, ensuring that the soil inside the ring cutter remains in its original shape, and that the soil sample is neither missing nor overflowing from the ring cutter edge. Moreover, it is easy to operate, and even novices can operate it efficiently.

Claims

1. An auxiliary device for collecting soil bulk density, characterized in that: It includes a handle, a bow arm, and a bowstring. The bow arm is mounted on the handle and is an integral part of the handle. The two ends of the bow arm are respectively provided with string holes, and the bowstring is tautly mounted on the two string holes.

2. The auxiliary device for soil bulk density sampling according to claim 1, characterized in that: The bow arm has a non-circular bending shape.

3. The auxiliary device for soil bulk density sampling according to claim 1, characterized in that: The distance between the two arm ends shall not be less than 80 mm.

4. The auxiliary device for soil bulk density sampling according to claim 1, characterized in that: The diameter of the wire hole is 1 mm.

5. The auxiliary device for soil bulk density sampling according to claim 1, characterized in that: There is a multiple looping structure between the end of the bowstring and the wire hole, which is fixed with adhesive.

6. The auxiliary device for soil bulk density sampling according to claim 5, characterized in that: The winding structure consists of the bowstring tightly attached to the front and back of the arm end, as well as the side ridges and wire holes formed between the front and back.

7. An auxiliary device for soil bulk density sampling according to claim 1 or 5, characterized in that: The bowstring is a fishing line.

8. An auxiliary device for soil bulk density sampling according to claim 1 or 5, characterized in that: The bow arm is provided with a handle hole.

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