A soil improvement testing device

Abstract

The utility model provides a kind of soil improvement test device, the utility model relates to soil improvement technical field, including ring knife tube and ring knife, ring knife tube is through pipe mouth, and ring knife is arranged in ring knife tube top, ring knife tube and ring knife bottom are formed with sharp angle's pipe mouth, and the bottom pipe mouth of ring knife tube is recessed and is closed slot, and the inside diameter of the closed slot of ring knife tube is less than the pipe mouth outside diameter of ring knife;Ring knife tube and ring knife are axially linked with the linkage of pressure rod structure, the beneficial effects of the utility model are as follows: by the matching ring knife tube and ring knife structure, to be convenient for the straight direction of ring knife sample to be taken out when ring knife sampling, utilize the screwing structure of external setting and cooperate the knife ring arranged in ring knife tube, utilize the axial section of knife ring to separate the soil sample of ring knife bottom, it is convenient to extract subsequent ring knife, avoid the trouble of shovel separation ring knife sample in sampling process, improve the efficiency of overall sampling and subsequent specific gravity test efficiency.

Description

Technical Field

[0001] This utility model relates to the field of soil improvement technology, and more specifically, to a soil improvement test device. Background Technology

[0002] Soil improvement experiments are a research process that uses scientific methods to evaluate the effects of different improvement measures on soil properties and crop growth. The core purpose is to solve soil degradation problems such as compaction, salinization, infertility, and pollution. By setting up controls and repeated treatments, the changes in soil physical, chemical, and biological indicators and crop responses are systematically monitored to screen out economical, effective, and environmentally friendly improvement schemes, providing a scientific basis for improving soil health, restoring soil fertility, ensuring sustainable agricultural development, and ecological restoration.

[0003] The ring cutter method is a standard method in soil physics for accurately determining key physical properties of soil such as bulk density and total porosity. Its core is to use a cylindrical bottomless steel ring (i.e., a ring cutter) with a known precise volume to collect soil samples in situ in the field or test site while maintaining the original structure. Traditional test tools require the surrounding soil to be removed during the sampling process in order to extract the ring cutter sample laterally. This increases the sampling workload when taking multiple samples for the control group and limits the sampling and test efficiency to some extent. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing test devices for physical property testing using the ring sampler method have low sampling efficiency and require a large amount of operation. In order to address the above problems, a soil improvement test device is provided.

[0005] The purpose and effect of this utility model are achieved by the following specific technical means: it includes a ring cutter tube and a ring cutter, the ring cutter tube is a through tube, and the ring cutter is inserted at the top of the ring cutter tube. Both the bottom of the ring cutter tube and the ring cutter have acute-angled tube openings, and the bottom opening of the ring cutter tube is a concave groove, and the inner diameter of the groove of the ring cutter tube is smaller than the outer diameter of the tube opening of the ring cutter.

[0006] The ring cutter tube is linked to the ring cutter with an axial pressure rod structure;

[0007] The ring cutter tube has an outer ring, and a pair of support brackets are symmetrically arranged on both sides of the ring. The end of the support bracket is rotatably fitted with a gear column, and the gear column has a bolt screw hole. The inner end of the support bracket is rotatably fitted with the gear column. The ring cutter tube has a pair of rotating wheels rotatably fitted on the constriction groove. The axial direction of the rotating wheels matches the support brackets on both sides. A toothed shaft extends from the rotating wheel, and a transmission gear plate is connected between the toothed shaft and the adjacent gear column. The transmission gear plate is rotatably fitted with the support bracket.

[0008] The rotating wheel extends above the inner edge of the cutter tube's constriction groove to form a cutter ring that matches the tube diameter.

[0009] A further preferred embodiment: the pressure bar structure includes a column, a first pressure handle and a second pressure handle, the column is bolted to the top of the ring cutter, the second pressure handle is inserted into the first pressure handle and connected to the column, and the downward stroke of the first pressure handle and the second pressure handle are matched.

[0010] A further preferred embodiment: the first pressure handle has a base plate fixedly disposed at one end relative to the second pressure handle, and a support shaft is fixed between the base plate and the support bracket.

[0011] A further preferred embodiment: the tangential travel of the blade rings on both sides is matched with the diameter of the blade ring tube.

[0012] A further preferred embodiment: the number of teeth on the gear column is less than the number of teeth on the transmission gear disk, and the transmission gear disk and gear shaft are force-saving gears.

[0013] A further preferred embodiment: a matching adapter is fitted at the bottom of the ring tube, and a sensor head is fixed on the adapter.

[0014] The beneficial effects of this utility model are:

[0015] This soil improvement testing device, through a matching ring tube and ring structure, facilitates the straight extraction of ring samples during ring sampling. An externally designed screw mechanism works in conjunction with a ring ring within the ring tube, using the axial tangential surface of the ring ring to separate the soil sample from the bottom of the ring. This facilitates subsequent ring extraction, avoiding the hassle of shoveling soil to separate the ring sample during sampling, thus improving overall sampling efficiency and the efficiency of subsequent specific gravity tests. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the base plate and the embedded ring structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal planar structure of the ring cutter tube of this utility model;

[0020] Figure 4 This is a schematic diagram of the blade ring structure of this utility model.

[0021] Figures 1-4In the middle: 1. Ring cutter tube, 2. Post, 3. Seat plate, 4. First pressure handle, 5. Second pressure handle, 6. Ring cutter, 7. Support bracket, 8. Support shaft, 9. Embedded ring, 10. Adapter seat, 11. Sensor head, 12. Gear column, 13. Transmission gear plate, 14. Gear shaft, 15. Cutter ring, 16. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the following description is provided in conjunction with the accompanying drawings. Figures 1-4 The present invention will be further described in detail below with specific embodiments. The following embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. On the contrary, any modifications and refinements made without departing from the scope of the present invention are within the patent protection scope of the present invention.

[0023] A soil improvement test device includes a ring tube 1 and a ring cutter 6. The ring tube 1 has a through-hole, and the ring cutter 6 is installed at the top of the ring tube 1. Both the ring tube 1 and the ring cutter 6 have acute-angled openings at their bottoms. The bottom opening of the ring tube 1 is a concave groove, and the inner diameter of the groove of the ring tube 1 is smaller than the outer diameter of the opening of the ring cutter 6.

[0024] An axial pressure bar structure is linked to the ring cutter tube 1 and the ring cutter 6;

[0025] A ring 9 is embedded on the outer side of the ring tube 1. A pair of support brackets 7 are symmetrically arranged on both sides of the ring 9. A gear column 12 is rotatably fitted at the end of the support bracket 7, and a bolt screw hole is opened on the gear column 12. The inner end of the support bracket 7 is rotatably fitted with the gear column 12. A pair of rotating wheels 13 are rotatably fitted on the constriction groove of the ring tube 1. The axial position of the rotating wheels 13 matches the two support brackets 7. A toothed shaft 15 extends from the rotating wheel 13, and a transmission gear disk 14 is connected between the toothed shaft 15 and the adjacent gear column 12. The transmission gear disk 14 is rotatably fitted with the support bracket 7.

[0026] The rotating wheel 13 extends above the inner edge of the constriction groove of the ring cutter tube 1 to form a cutter ring 16 that matches the tube diameter;

[0027] This experimental device is based on the ring cutter method. During sampling, the ring cutter tube 1, along with the ring cutter 6 and the pressure rod structure, is inserted into the soil. The ring cutter tube 1 is pressed into the soil manually or with the help of tools until the top surface of the ring cutter tube 1 is submerged in the soil layer. During this process, the soil will fill the groove of the ring cutter tube 1 and the inner diameter of the opening of the ring cutter 6. Then, a screwing tool is used to insert it into the gear column 12 on both sides. The rotation of the tool in the screwing direction drives the rotating wheel 13 to rotate along the transmission gear plate 14 and gear shaft 15. The rotation of the rotating wheel 13 will drive the cutter ring 16 to rotate axially, thereby using the cutter ring 16 to axially separate the soil at the bottom of the opening of the ring cutter 6, so that the cutter ring 16 and the soil can be extracted into the ring cutter tube 1, completing the soil sampling for subsequent specific gravity tests.

[0028] Furthermore, such as Figure 2 As shown, the pressure bar structure includes a column 2, a first pressure handle 4, and a second pressure handle 5. The column 2 is bolted to the top of the ring cutter 6. The second pressure handle 5 is inserted into the first pressure handle 4 and connected to the column 2. The downward strokes of the first pressure handle 4 and the second pressure handle 5 are matched. During the insertion of the device into the soil layer, the second pressure handle 5 serves as the axial linkage structure of the column 2, providing a force structure for the downward stroke of the ring cutter 6. During sampling, the connection end between the column 2 and the ring cutter 6 can be disassembled by rotation. At the same time, the first pressure handle 4 serves as the downward force structure of the ring cutter tube 1. The first pressure handle 4 is fixed at one end relative to the second pressure handle 5. There is a base plate 3, and a support shaft 8 is fixed between the base plate 3 and the support frame 7. The first pressure handle 4 and the synchronous column 2 are moved axially by the axial downward pressure of the second pressure handle 5. During the process, the first pressure handle 4 and the base plate 3 are pressed down, and the support shaft 8 is used to drive the insert ring 9 and the ring cutter tube 1 to press down. At the same time, the second pressure handle 4 can slide and extend along the inner diameter of the first pressure handle 4 so that the second pressure handle 4 can be lifted to pull out the ring cutter 6. This structure of the first pressure handle 4 and the second pressure handle 5 can effectively ensure the axial position stability of the ring cutter tube 1 and the ring cutter 6 during the entire pressing action, and ensure the stratification depth specification of the soil sample.

[0029] The cutting stroke of the two side cutter rings 16 is matched with the pipe diameter of the ring cutter 6, such as... Figure 4 As shown, the axially moving cut surfaces of the two side cutter rings 16 will match the diameter opening of the ring cutter 6, ensuring the regularity and separation effect of the soil cut surface when the two side cutter rings 16 cut the soil layer.

[0030] Based on the above, the number of teeth of the gear column 12 is less than the number of teeth of the transmission gear disk 14, and the transmission gear disk 14 and the gear shaft 15 are force-saving gears. The relatively matched gear column 12 and transmission gear disk 14 ensure the driving force of the force-saving gear transmission structure, thereby reducing the turning force required for the drive cutter ring 16.

[0031] Furthermore, a matching adapter 10 is fitted at the bottom of the ring cutter tube 1, and a sensor head 11 is fixed on the adapter 10. The adapter 10 is an optional accessory. The sensor head 11 is based on gravity sensing and is connected to the ring cutter 6 through the transmission head 11 on the adapter 10, so as to facilitate the comparison of the specific gravity of the ring cutter 6 and the soil sample after sampling.

[0032] During the experiment, the ring cutter tube 1, along with the ring cutter 6 and the pressure rod structure, was inserted into the sampled soil. The ring cutter tube 1 was pressed into the soil manually or with the help of tools until the top surface of the ring cutter tube 1 was submerged in the soil layer. During the insertion of the device into the soil layer, the second pressure handle 5, as the axial linkage structure of the column 2, provided the force structure for the downward stroke of the ring cutter 6. The first pressure handle 4, as the downward force structure of the ring cutter tube 1, mainly drove the first pressure handle 4 to move axially in sync with the column 2 through the axial downward pressure of the second pressure handle 5. In the process, the first pressure handle 4 and the seat plate 3 were pressed down, which indirectly used the support shaft 8 to drive the embedded ring 9 and the ring cutter tube 1 to press down. At the same time, the second pressure handle 4 could slide and extend along the inner diameter of the first pressure handle 4 so that the second pressure handle 4 could be lifted to pull out the ring cutter 6.

[0033] During the pressing process, the soil will fill the groove of the ring cutter tube 1 and the inner diameter of the ring cutter tube 6. Then, with the help of a screwing tool, it is inserted into the gear column 12 on both sides. By rotating the tool in the screwing direction, the rotating wheel 13 is driven to rotate along the transmission gear plate 14 and gear shaft 15. The rotation of the rotating wheel 13 will drive the cutter ring 16 to rotate axially, thereby using the cutter ring 16 to axially separate the soil at the bottom of the ring cutter tube 6, so that the cutter ring 16 and the soil can be extracted into the ring cutter tube 1 to complete the soil sampling for subsequent specific gravity test.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A soil improvement experimental device, characterized in that: It includes a ring cutter tube (1) and a ring cutter (6). The ring cutter tube (1) is a through-hole, and the ring cutter (6) is installed on the top of the ring cutter tube (1). The bottom of the ring cutter tube (1) and the ring cutter (6) are both formed with acute-angled openings. The bottom opening of the ring cutter tube (1) is a concave groove, and the inner diameter of the groove of the ring cutter tube (1) is smaller than the outer diameter of the opening of the ring cutter (6). The ring cutter tube (1) and the ring cutter (6) are linked together by an axial pressure rod structure; The ring cutter tube (1) has an outer ring (9) embedded in it. A pair of support brackets (7) are symmetrically arranged on both sides of the ring (9). The end of the support bracket (7) is rotatably fitted with a gear column (12), and the gear column (12) has a bolt screw hole. The inner end of the support bracket (7) is rotatably fitted with the gear column (12). The ring cutter tube (1) has a pair of rotating wheels (13) rotatably fitted on the constriction groove. The axial position of the rotating wheels (13) matches the support brackets (7) on both sides. A toothed shaft (15) extends from the rotating wheel (13), and a transmission gear plate (14) is connected between the toothed shaft (15) and the adjacent gear column (12). The transmission gear plate (14) is rotatably fitted with the support bracket (7). The swivel wheel (13) extends above the inner edge of the constriction groove of the ring cutter tube (1) to form a cutter ring (16) that matches the tube diameter.

2. The soil improvement test apparatus according to claim 1, characterized in that: The pressure bar structure includes a column (2), a first pressure handle (4) and a second pressure handle (5). The column (2) is bolted to the top of the ring cutter (6). The second pressure handle (5) is inserted into the first pressure handle (4) and connected to the column (2). The downward strokes of the first pressure handle (4) and the second pressure handle (5) are matched.

3. The soil improvement test apparatus according to claim 2, characterized in that: The first pressure handle (4) has a base plate (3) fixedly provided at one end relative to the second pressure handle (5), and a support shaft (8) is fixed between the base plate (3) and the support frame (7).

4. The soil improvement test apparatus according to claim 1, characterized in that: The cutting surface travel of the blade rings (16) on both sides is matched with the diameter of the blade ring (6).

5. The soil improvement test apparatus according to claim 1, characterized in that: The number of teeth of the gear column (12) is less than the number of teeth of the transmission gear disk (14), and the transmission gear disk (14) and the gear shaft (15) are force-saving gears.

6. The soil improvement test apparatus according to claim 1, characterized in that: The bottom of the ring tube (1) is fitted with a matching adapter (10), and a sensor head (11) is fixed on the adapter (10).

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