Soil collecting device

Abstract

The invention belongs to the technical field of soil collection, and relates to a soil collection device which comprises a drill rod, a soil sampling pipe, an outer cylinder and a cutting assembly. The outer cylinder and the soil sampling tube are coaxially arranged, and the outer cylinder sleeves the lower end of the soil sampling tube; the cutting assembly comprises a cutting knife, a rotating shaft and a supporting frame, the cutting knife is arranged at the bottom of the soil sampling pipe and located on the inner side of the outer barrel, one end of the cutting knife is fixed to the rotating shaft, the rotating shaft is rotationally connected with the outer barrel, the center line of the rotating shaft is parallel to the center line of the soil sampling pipe, and the upper end of the rotating shaft upwards extends out of the outer barrel; the rotating shaft is rotationally connected with the supporting frame and drives the cutter to rotationally cut soil. In the rotating process, soil at the bottom of the soil sampling pipe and plant root systems in the soil are cut off, so that the soil sampling pipe can conveniently and smoothly lift and take out the soil in the soil sampling pipe. After the soil sampling pipe is taken out, the bulldozing plate is driven by the push rod to move, so that the soil in the soil sampling pipe is pushed out, and the integrity of the taken soil sample is further ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of soil collection, and in particular relates to a soil collection device. Background Art

[0002] In the process of natural resource survey, it is often necessary to study the soil in the environment and collect soil samples for analysis. At present, soil samplers are mostly used to collect soil. Existing soil collectors often use hollow drills. When using, first select a suitable sampling point, insert the drill bit into the soil at the sampling point, and use the drill bit to drill the soil to the corresponding depth according to the required sampling depth. The soil sampling tube is extended into the soil through the drill hole until the soil sample is obtained in the soil sampling tube. Finally, the soil sample in the soil sampling tube is taken out to collect the soil.

[0003] In areas with high soil water content, the soil is more sticky, and the finer the soil, the larger the contact surface, and the stronger the cohesion and adhesion. When collecting soil in these areas, after the soil sampling tube is inserted into the soil, the soil sample is taken from the inside of the soil sampling tube, but the bottom of the soil sample is attached to the original soil due to viscosity, which will cause the soil sample to not be completely taken out when the soil sampling tube is lifted up. In addition, some soils have plant roots growing. If the soil sample in the soil sampling tube is connected to the original soil by plant roots, the sampled soil cannot be completely taken out, and even the soil in the soil sampling tube cannot be lifted, affecting the integrity of the collected soil sample and bringing difficulties to soil collection. Summary of the invention

[0004] In view of this, the present invention provides a soil sampling device, which can facilitate lifting the soil sample in the soil sampling tube and improve the integrity of the soil sampling.

[0005] The technical solution of the present invention is:

[0006] A soil collection device, comprising a drill rod, one end of which is connected to a soil sampling pipe, and further comprising:

[0007] An outer cylinder is coaxially arranged with the soil sampling pipe and sleeved on the lower end of the soil sampling pipe;

[0008] The cutting assembly comprises a cutting knife, a rotating shaft and a supporting frame. The cutting knife is arranged at the bottom of the soil sampling tube and is located on the inner side of the outer cylinder. One end of the cutting knife is fixed to the rotating shaft. The rotating shaft is rotatably connected to the outer cylinder. The center line of the rotating shaft is parallel to the center line of the soil sampling tube. The upper end of the rotating shaft extends upward out of the outer cylinder. A supporting frame is arranged on the drill rod. The rotating shaft is rotatably connected to the supporting frame. By driving the rotating shaft to rotate, the rotating shaft drives the cutting knife to rotate and cut the soil.

[0009] Preferably, the cutting knife is arranged in an arc shape, and the arc direction of the arc is arranged along the circumference of the soil sampling pipe.

[0010] Preferably, at least two groups of cutting knives are provided, and the multiple groups of cutting knives are evenly arranged around the central axis of the soil sampling pipe, and the extension directions of the multiple groups of cutting knives starting from the rotating shaft are all clockwise or counterclockwise.

[0011] Preferably, the multiple groups of cutting knives are located in different planes.

[0012] Preferably, the cutting knife is a telescopic knife, which includes an arc-shaped knife sheath, a arc-shaped blade is slidably arranged in the knife sheath, an elastic member is arranged in the knife sheath, the elastic member is connected to the blade and is used to push the blade out of the knife sheath, the inner sides of the knife sheath and the blade are both provided with cutting edges, and the end of the knife sheath facing away from the blade is fixed to the rotating shaft.

[0013] Preferably, an accommodating groove is provided on the inner wall of the outer cylinder, and the cutting knife is arranged in the accommodating groove.

[0014] Preferably, the lower end of the outer cylinder has a blade portion, and the accommodating groove is located between the blade portion and the lower bottom surface of the soil sampling pipe.

[0015] Preferably, the support frame includes a rotating disk, the rotating disk is rotatably connected to the drill rod, the rotating shaft is rotatably connected to the rotating disk, a first gear is fixedly mounted on the drill rod, the first gear is located below the rotating disk, a second gear is fixedly mounted on the rotating shaft, the first gear is meshed with the second gear, and the outer cylinder is rotatably connected to the soil sampling pipe.

[0016] Preferably, two limiting rings are fixedly mounted on the drill rod, the two limiting rings are spaced apart, and the rotating disk is disposed between the two limiting rings.

[0017] Preferably, the drill rod is a hollow rod, a bulldozer plate is provided inside the soil sampling tube, the outer circumferential surface of the bulldozer plate is slidably connected and cooperated with the inner circumferential surface of the soil sampling tube up and down, a push rod is fixedly connected to the upper end of the bulldozer plate, the drill rod is extended from the upper end of the push rod, and a hand grip is connected to the upper end of the push rod.

[0018] Compared with the prior art, the soil collection device provided by the present invention has the following beneficial effects:

[0019] The invention arranges an outer cylinder outside a soil taking pipe. When in use, the outer cylinder first penetrates into the soil to cut the soil in a vertical direction, so that the soil can smoothly enter the soil taking pipe. When the soil taking pipe reaches a set position, the rotating shaft is rotated, and the rotating shaft drives the cutting knife to rotate, so that the cutting knife rotates at the bottom of the soil taking pipe. During the rotation process, the soil at the bottom of the soil taking pipe and the plant roots in the soil are cut off, so that the soil taking pipe can smoothly lift and take out the soil inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a cross-sectional view of the present invention.

[0022] Figure 3 For the present invention Figure 2 A partial enlarged view of point A in the middle.

[0023] Figure 4 For the present invention Figure 2 A partial enlarged view of point B in the middle.

[0024] Figure 5 Schematic diagram of the first gear and the second gear of the present invention.

[0025] Figure 6 It is a schematic diagram of the position of the cutting knife of the present invention.

[0026] Description of reference numerals:

[0027] 1. Drill rod, 2. Drill rod, 3. Drill rod, 4. Rotating shaft, 5. First gear, 6. Second gear, 7. Rotating shaft, 8. Cutting knife, 801, Knife sleeve, 802, Blade, 9. Bulldozer, 10. Push rod. DETAILED DESCRIPTION

[0028] It should be noted that, in the description of the present invention, the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] In addition, it should be noted that the connections involved in the present invention can be achieved by using conventional connection methods and do not involve any innovation.

[0031] The subject of the present invention is a soil collection device. In the process of natural resource investigation, it is often necessary to study the soil in the environment and analyze it after collecting soil samples. At present, soil samplers are mostly used to collect soil. Existing soil collectors often use hollow drills. When using, first select a suitable sampling point, insert the drill bit into the soil at the sampling point, and use the drill bit to drill a hole in the soil to a corresponding depth according to the depth of sampling required. The soil sampling tube is extended into the soil through the drill hole until the soil sample is obtained in the soil sampling tube. Finally, the soil sample in the soil sampling tube is taken out to collect the soil.

[0032] In areas with high soil water content, the soil is more sticky, and the finer the soil, the larger the contact surface, and the stronger the cohesion and adhesion. When collecting soil in these areas, after the soil sampling tube is inserted into the soil, the soil sample is taken from the inside of the soil sampling tube, but the bottom of the soil sample is attached to the original soil due to viscosity, which will cause the soil sample to not be completely taken out when the soil sampling tube is lifted up. In addition, some soils have plant roots growing. If the soil sample in the soil sampling tube is connected to the original soil by plant roots, the sampled soil cannot be completely taken out, and even the soil in the soil sampling tube cannot be lifted, affecting the integrity of the collected soil sample and bringing difficulties to soil collection.

[0033] Based on the above reasons, the present invention provides a soil collection device to solve the above-mentioned technical problems. Figures 1 to 6 The present invention is described in detail with reference to the structural schematic diagram of FIG.

[0034] Example 1

[0035] The present invention provides a soil collection device, which comprises a drill rod 1, one end of which is connected to a soil sampling pipe 2, an outer tube 3 and a cutting assembly.

[0036] The outer cylinder 3 is coaxially arranged with the soil sampling tube 2 and is sleeved on the lower end of the soil sampling tube 2. The cutting assembly includes a cutting knife 8, a rotating shaft 4, and a support frame. The cutting knife 8 is arranged at the bottom of the soil sampling tube 2, and the cutting knife 8 is located on the inner side of the outer cylinder 3. One end of the cutting knife 8 is fixed to the rotating shaft 4, and the rotating shaft 4 is rotatably connected to the outer cylinder 3. The center line of the rotating shaft 4 is parallel to the center line of the soil sampling tube 2. The upper end of the rotating shaft 4 extends upward out of the outer cylinder 3. A support frame is arranged on the drill rod 1, and the rotating shaft 4 is rotatably connected to the support frame. By driving the rotating shaft 4 to rotate, the rotating shaft 4 drives the cutting knife 8 to rotate and cut the soil.

[0037] The outer cylinder 3 is provided to provide support for the cutting assembly.

[0038] When in use, the drill rod 1 drives the soil sampling tube 2 to move downward into the soil. During the downward movement, the soil sampling tube 2 cuts the circumferential soil into columns, while the soil at the bottom of the column is still connected to the original soil. If there are plant roots or other connections in the original soil, the column may not be completely separated from the original soil. In the process of moving the soil sampling tube 2 upward and taking it out by the drill rod 1, the soil in the column may not be completely taken out due to the joint effect of the original soil, which brings inconvenience to the soil collection work.

[0039] The cutting assembly provided in the present invention is arranged at the bottom of the soil sampling tube 2. Its function is to cut the soil at the bottom of the soil sampling tube 2 transversely after the soil sampling tube 2 moves down to the set position, that is, to cut along the cross-sectional direction of the columnar body, thereby disconnecting the columnar body from the original soil at the bottom, thereby improving the integrity of the soil sample taken out.

[0040] Specifically, when in use, the drill rod 1 drives the soil sampling tube 2 and the outer cylinder 3 to move downward, and the cutting assembly moves synchronously during the downward movement of the soil sampling tube 2 and the outer cylinder 3. Since the outer cylinder 3 is arranged at the lower end of the outer cylinder 3, the outer cylinder 3 cuts the soil around the soil sampling tube 2 during the downward movement. After moving down to the set position, the rotating shaft 4 is manually rotated, and the rotating shaft 4 drives the cutting knife 8 to rotate. During the rotation of the cutting knife 8, the bottom of the columnar soil sample is cut, the connection between the soil sample and the original soil is cut off, and the plant roots in the soil are cut off, and the soil sample is separated from the original soil. Then, the soil sampling tube 2 and the soil sample are lifted by lifting the drill rod 1, thereby improving the integrity of the extracted soil sample. In addition, the present invention can quickly rotate and cut the soil through the design of the rotating cutting knife, and improves the efficiency of soil collection.

[0041] Example 2

[0042] On the basis of Example 1, the soil collection device provided in this embodiment further optimizes the design of the cutting blade 8. Specifically, the cutting blade 8 is set to be arc-shaped, and the arc direction of the arc is set along the circumference of the soil sampling tube 2. And the blade side is set on the inner side of the arc. Compared with the straight blade, the inner arc blade can improve the cutting efficiency and the effectiveness of cutting during cutting, thereby further improving the integrity of the soil sample.

[0043] In this embodiment, in order to further improve the cutting efficiency, at least two groups of cutting knives 8 are provided, and the multiple groups of cutting knives 8 are evenly arranged around the central axis of the soil sampling tube 2, and the extension direction of the multiple groups of cutting knives 8 starting from the rotating shaft 4 is clockwise or counterclockwise. The coverage rate of the cutting surface formed by the cutting path at the bottom of the soil sample can be increased, thereby further improving the integrity of the cutting surface of the soil sample.

[0044] In order to avoid interference between two opposing groups of cutting blades 8 , the groups of cutting blades 8 are located in different planes.

[0045] In this embodiment, in order to avoid the situation where the cutting knife 8 is too long and cannot rotate normally in the outer cylinder 3, the cutting knife 8 is a telescopic knife, and the cutting knife includes an arc-shaped knife sleeve 801, and an arc-shaped blade 802 is slidably arranged in the knife sleeve 801. An elastic member is arranged in the knife sleeve 801, and the elastic member is connected to the blade 802 for pushing the blade 802 out of the knife sleeve 801. The inner sides of the knife sleeve 801 and the blade 802 are both provided with cutting edges, and the end of the knife sleeve 801 facing away from the blade 802 is fixed to the rotating shaft 4.

[0046] Specifically, when in use, the rotating shaft 4 drives the cutting knife 8 to rotate, and the inner blades of the knife sleeve 801 and the blade 802 cut the plant roots on the path during the rotation. During the rotation, the inner wall of the outer cylinder 3 forms a barrier to the blade 802, so that the blade 802 is retracted into the knife sleeve 801, and the end of the blade 802 away from the rotating shaft 4 moves along the inner wall of the outer cylinder 3. When the knife sleeve 801 and the blade 802 rotate together, the covering path is always located inside the outer cylinder 3. The timely retraction of the blade 802 can also avoid cutting the original soil outside the soil sample, avoid the original soil outside the soil sample from generating resistance to the blade 802, and improve the cutting effect.

[0047] Example 3

[0048] On the basis of Example 1, the soil collection device provided in this embodiment optimizes the design of the outer cylinder 3, and the inner wall of the outer cylinder 3 is provided with a receiving groove, and the cutting knife 8 is arranged in the receiving groove. It can avoid the cutting assembly from generating resistance to the downward movement of the soil sampling tube 2 during the downward movement of the soil sampling tube 2, and can also reduce the influence of the cutting assembly on the soil state of the original soil.

[0049] In order to further improve the soil extraction efficiency, the lower end of the outer tube 3 has a blade portion, and the receiving groove is located between the blade portion and the lower bottom surface of the soil extraction pipe 2.

[0050] When the cutting blades 8 are set to multiple groups, it is troublesome to manually rotate multiple rotating shafts 4. In order to improve efficiency, the support frame in this embodiment includes a rotating disk 7, which is rotatably connected to the drill rod 1, and the rotating shaft 4 is rotatably connected to the rotating disk 7. A first gear 5 is fixedly mounted on the drill rod 1, and the first gear 5 is located below the rotating disk 7. A second gear 6 is fixedly mounted on the rotating shaft 4, and the first gear 5 is meshed with the second gear 6. The outer cylinder 3 is rotatably connected to the soil sampling pipe 2. Two limit rings are fixedly mounted on the drill rod 1, and the two limit rings are arranged at intervals. The rotating disk 7 is arranged between the two limit rings, and the limit rings are fixed on the drill rod and arranged at intervals to limit the axial movement of the rotating disk and improve the stability of the operation.

[0051] Specifically, when in use, the drill rod 1 does not move, and the staff manually rotates the rotating disk 7, which drives the rotating shaft 4 to revolve synchronously, and the rotating shaft 4 revolves while driving the outer cylinder 3 to rotate. At the same time, since the rotating shaft 4 is fitted with a second gear 6, the second gear 6 is meshed with the first gear 5 fitted on the drill rod 1, so the rotating shaft 4 can rotate while revolving, and the rotating shaft 4 rotates by itself to drive the cutting knife 8 to rotate and cut the soil sample.

[0052] Example 4

[0053] The above technical solutions are all for ensuring the integrity of the bottom of the columnar soil sample when it is taken out. In this embodiment, in order to improve the integrity of the top of the soil sample when it is taken out, an optimized design is performed, thereby further improving the overall integrity of the soil sample.

[0054] In this embodiment, the drill rod 1 is a hollow rod, and a bulldozer plate 9 is provided inside the soil sampling tube 2. The outer circumference of the bulldozer plate 9 is slidably connected to the inner circumference of the soil sampling tube 2 up and down. A push rod 10 is fixedly connected to the upper end of the bulldozer plate 9. The upper end of the push rod 10 extends out of the drill rod 1, and the upper end of the push rod 10 is connected to a hand grip.

[0055] Specifically, when in use, after the soil sampling tube 2 lifts the soil sample from the original soil, the push rod 10 is pushed by the handheld portion to drive the bulldozer 9 to move inside the bulldozer 9, and the soil sample inside the soil sampling tube 2 is pushed out completely during the movement, thereby further improving the overall integrity of the soil sample.

[0056] In general, the present invention collects soil samples efficiently, evenly and accurately, while ensuring the safety and convenience of operation. Through the design of the rotary cutting blade and the bulldozer, the device can penetrate deep into the soil and perform rotary cutting, and then push out the soil sample. The whole process is fast and can maintain the integrity of the soil sample.

[0057] The present invention also provides a method for using the soil collection device, which comprises the following steps:

[0058] 1. Device assembly and preparation:

[0059] One end of the drill rod 1 is connected to the soil sampling pipe 2, and the lower end of the soil sampling pipe 2 is sleeved with an outer cylinder 3, and the outer cylinder 3 and the soil sampling pipe 2 are coaxially arranged.

[0060] The cutting knife 8 is installed at the bottom of the soil taking pipe 2 and inside the outer cylinder 3, and one end is fixed to the rotating shaft 4. The rotating shaft 4 is rotatably connected to the support frame, and the upper end of the rotating shaft 4 extends out of the outer cylinder 3.

[0061] 2. Operation and cutting:

[0062] When soil needs to be collected, the worker rotates the rotating disk 7 , and the first gear 5 and the second gear 6 are meshed to transmit the rotational motion to the rotating shaft 4 .

[0063] When the rotating shaft 4 rotates, the cutting blade 8 fixed at one end thereof is driven to rotate. Since the cutting blade 8 is arranged in an arc shape and is arranged circumferentially along the soil taking pipe 2, the soil can be cut when rotating.

[0064] 3. Soil collection:

[0065] The cutting blade 8 cuts into the soil during the rotation process and cuts the bottom of the soil sample.

[0066] A plurality of groups of cutting blades 8 are evenly arranged around the soil sampling pipe 2, thereby ensuring the uniformity and integrity of the soil sample.

[0067] 4. Soil sample push:

[0068] The drill rod 1 is a hollow rod, and a bulldozer plate 9 is arranged inside, and the bulldozer plate 9 is connected to the handheld part through a push rod 10. The staff moves the push rod 10 downward to make the bulldozer plate 9 slide downward in the soil sampling tube 2, and pushes the cut soil sample out of the soil sampling tube 2.

[0069] The invention provides a method for using a soil collecting device. When in use, an outer cylinder is arranged outside a soil collecting tube. When in use, the outer cylinder first penetrates into the soil to cut the soil in a vertical direction, so that the soil can smoothly enter the soil collecting tube. When the soil collecting tube reaches a set position, the rotating shaft is rotated, and the rotating shaft drives the cutting knife to rotate, so that the cutting knife rotates at the bottom of the soil collecting tube. During the rotation, the soil at the bottom of the soil collecting tube and the plant roots in the soil are cut off, so that the soil collecting tube can smoothly lift up and take out the soil inside. A bulldozer is arranged in the soil collecting tube. When in use, after the soil collecting tube is taken out, the push rod is pushed, and the push rod drives the bulldozer to move, and the bulldozer pushes the soil in the soil collecting tube out of the soil collecting tube, thereby further ensuring the integrity of the taken out soil sample. The invention has strong practicality and is worthy of promotion.

[0070] The above disclosure is only a preferred specific embodiment of the present invention, but the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A soil collection device, comprising a drill rod (1), one end of the drill rod (1) being connected to a soil sampling pipe (2), characterized in that: Also includes: An outer cylinder (3) is coaxially arranged with the soil sampling pipe (2) and sleeved on the lower end of the soil sampling pipe (2); The cutting assembly comprises a cutting knife (8), a rotating shaft (4), and a support frame. The cutting knife (8) is arranged at the bottom of the soil sampling tube (2), and the cutting knife (8) is located on the inner side of the outer cylinder (3). One end of the cutting knife (8) is fixed to the rotating shaft (4). The rotating shaft (4) is rotatably connected to the outer cylinder (3). The center line of the rotating shaft (4) is parallel to the center line of the soil sampling tube (2). The upper end of the rotating shaft (4) extends upward out of the outer cylinder (3). A support frame is arranged on the drill rod (1). The rotating shaft (4) is rotatably connected to the support frame. When in use, the rotating shaft (4) is rotated, and the rotating shaft (4) drives the cutting knife (8) to rotate and cut the soil.

2. A soil collection device according to claim 1, characterized in that: The cutting knife (8) is arranged in an arc shape, and the arc direction of the arc is arranged along the circumference of the soil sampling pipe (2).

3. A soil collection device according to claim 2, characterized in that: At least two groups of cutting knives (8) are provided, and the multiple groups of cutting knives (8) are evenly arranged around the central axis of the soil sampling pipe (2), and the extension direction of the multiple groups of cutting knives (8) starting from the rotating shaft (4) is clockwise or counterclockwise.

4. A soil collection device according to claim 3, characterized in that: The multiple groups of cutting knives (8) are all located in different planes.

5. A soil collection device according to claim 1, characterized in that: The cutting knife (8) is a telescopic knife, comprising an arc-shaped knife sheath (801), an arc-shaped blade (802) being slidably arranged in the knife sheath (801), an elastic member being arranged in the knife sheath (801), the elastic member being connected to the blade (802) and being used for pushing the blade (802) out of the knife sheath (801), blades being arranged on the inner sides of the knife sheath (801) and the blade (802), and an end of the knife sheath (801) facing away from the blade (802) being fixed to the rotating shaft (4).

6. A soil collection device according to claim 1, characterized in that: The inner wall of the outer cylinder (3) is provided with a receiving groove, and the cutting knife (8) is arranged in the receiving groove.

7. A soil collection device according to claim 6, characterized in that: The lower end of the outer cylinder (3) has a blade portion, and the accommodating groove is located between the blade portion and the lower bottom surface of the soil sampling tube (2).

8. A soil collection device according to claim 1, characterized in that: The support frame comprises a rotating disk (7), the rotating disk (7) is rotatably connected to the drill rod (1), the rotating shaft (4) is rotatably connected to the rotating disk (7), a first gear (5) is fixedly mounted on the drill rod (1), the first gear (5) is located below the rotating disk (7), a second gear (6) is fixedly mounted on the rotating shaft (4), the first gear (5) is meshed with the second gear (6), and the outer cylinder (3) is rotatably connected to the soil sampling pipe (2).

9. A soil collection device according to claim 8, characterized in that: Two limiting rings are fixedly mounted on the drill rod (1), the two limiting rings are arranged at an interval, and the rotating disk (7) is arranged between the two limiting rings.

10. A soil collection device according to claim 1, characterized in that: The drill rod (1) is a hollow rod. A bulldozer plate (9) is arranged inside the soil sampling tube (2). The outer circumference of the bulldozer plate (9) is slidably connected to the inner circumference of the soil sampling tube (2) up and down. A push rod (10) is fixedly connected to the upper end of the bulldozer plate (9). The upper end of the push rod (10) extends out of the drill rod (1). The upper end of the push rod (10) is connected to a hand-held portion.

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