Split type field soil column sampling pipe and sampling method

Abstract

The invention relates to the technical field of soil sampling, in particular to a split type field soil column sampling pipe and a sampling method.The split type field soil column sampling pipe comprises a first semicircular pipe, when field soil columns need to be sampled, a second semicircular pipe and the first semicircular pipe are in butt joint, and in the process, the first semicircular pipe and the second semicircular pipe are fixed and connected through a connecting mechanism; after the first semicircular pipe and the second semicircular pipe are connected to form a complete cylindrical pipe, the cylindrical pipe is inserted into a field soil layer, and after soil gradually enters the pipe, generated pressure extrudes a hydraulic sensing closing mechanism to seal an opening, so that the soil is prevented from falling off from the inside during subsequent movement, and the soil is prevented from being damaged. And after soil completely enters the pipe and forms a soil column, the first semicircular pipe and the second semicircular pipe are lifted out of the soil, and then the first semicircular pipe and the second semicircular pipe are separated by reversely using the connecting mechanism, so that the soil column in the pipe can be conveniently taken, and the soil column in the pipe is prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of soil sampling, in particular to a split type field soil column sampling tube and a sampling method. BACKGROUND

[0002] The fundamental purpose of soil sampling is to accurately reflect the overall soil conditions of the entire investigation area (sampling unit) by collecting a small number of representative samples, which is significant in judging whether the soil is contaminated, the degree of contamination, providing a basis for environmental management and remediation, understanding the soil fertility status, and providing data support for scientific fertilization and soil improvement.

[0003] In soil scientific research and agricultural production practice, field soil column sampling is a key means to obtain soil profile information. The existing sampling tube is mostly of an integrated structure. Due to the integrated structure, the soil needs to be shaken up and down or vibrated in other ways to take out the soil column after the sampling tube is filled with soil. This way of taking out the soil column is easy to cause the formed soil column to be loose and collapsed, which easily damages the integrity of the soil column and affects the accurate analysis of the information of the soil layered structure and nutrient distribution. Moreover, it has poor adaptability to different soil environments and sampling depths, is inconvenient to operate, and reduces the sampling efficiency and sample quality. SUMMARY

[0004] The purpose of the present application is to provide a split type field soil column sampling tube and a sampling method to solve the problem of easy damage to the integrity of the soil column when taking out the soil column in the prior art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: A split type field soil column sampling tube and a sampling method, comprising a first half-round tube, one end of the first half-round tube is detachably connected with a second half-round tube, the lower side of the first half-round tube is provided with a hydraulic sensing closing mechanism, the hydraulic sensing closing mechanism is used to close the opening at the lower end when the first half-round tube and the second half-round tube are filled with soil inside, the upper side of the first half-round tube and the second half-round tube is provided with a connecting mechanism, the connecting mechanism is used to connect and detach the first half-round tube and the second half-round tube.

[0006] Further, the hydraulic pressure sensitive closing mechanism is composed of a pressure receiving plate, a fitting plate, a folding plate, a hydraulic groove, a fourth spring, a first piston rod, a first piston plate, a second piston plate and a second piston rod, the hydraulic groove is arranged on the circumferential inner wall of the first semicircular tube, the fourth spring is fixedly connected to the upper inner wall of the first semicircular tube, the pressure receiving plate is fixedly connected to the lower end of the fourth spring, the first piston rod is fixedly connected to the upper end of the pressure receiving plate and movably inserted into the hydraulic groove, the folding plate is fixedly connected to the circumferential inner wall of the first semicircular tube, the fitting plate is fixedly connected to one end of the folding plate, the second piston rod is fixedly connected to one end of the fitting plate and movably connected to the hydraulic groove, and the upper ends of the first piston rod and the second piston rod are fixedly connected with the first piston plate and the second piston plate respectively, and the first piston plate and the second piston plate are movably connected to the hydraulic groove.

[0007] Further, the upper inner wall of the second semicircular tube is fixedly connected with a third spring, and the lower end of the third spring is fixedly connected with a load bearing plate.

[0008] Further, the connecting mechanism is composed of a mounting groove, a mounting shell, a connecting sleeve, an insertion rod, a first spring, a second spring, a clamping block and a clamping groove, the mounting shell and the connecting sleeve are fixedly connected to the upper ends of the second semicircular tube and the first semicircular tube respectively, the first spring is fixedly connected to one side of the inner wall of the mounting shell, the insertion rod is fixedly connected to one end of the first spring, the clamping groove and the mounting groove are arranged on the upper ends of the insertion rod and the connecting sleeve respectively, the second spring is fixedly connected to the lower inner wall of the mounting groove, and the clamping block is fixedly connected to the upper end of the second spring and movably clamped in the clamping groove.

[0009] Further, one side of the inner wall of the mounting shell is fixedly connected with an extension rod, and the first spring is sleeved on the circumferential surface of the extension rod.

[0010] Further, the upper end of the first semicircular tube is fixedly connected with two hanging ears, and one end of each of the two hanging ears is provided with a hanging hole.

[0011] Further, one end of the clamping block is a bevel, and the clamping block is trapezoidal.

[0012] A split type field soil column sampling tube and a sampling method, comprising the following steps: S1: when the soil column in the field needs to be sampled, the second semicircular tube and the first semicircular tube are butted, and in the process, the insertion rod is inserted into the connecting sleeve, then the insertion rod is ejected to the connecting sleeve through the elastic expansion of the first spring, then the clamping block is ejected and clamped into the clamping groove through the elastic expansion of the second spring fixedly connected in the mounting groove, and the first semicircular tube and the second semicircular tube are fixed and connected through the connection of the clamping block and the clamping groove; S2: after the first half-circular pipe and the second half-circular pipe are connected and form a complete cylindrical pipe, the complete cylindrical pipe is inserted into the soil layer in the field, then after the soil gradually enters the pipe, the pressure generated by the soil will extrude the pressure plate, the first piston rod connected to the upper end of the pressure plate pushes the first piston plate to move into the hydraulic groove, extrudes the liquid in the hydraulic groove, and synchronously extrudes the second piston plate and the second piston rod to move to the other end, thereby driving the abutting plate to move to the left until the abutting plate moves and abuts against the opening at the lower end of the first half-circular pipe and the second half-circular pipe, and at the same time, the folded folding plate is pulled to be flat to an unfolded state, so as to seal the opening and prevent the soil from falling from the inside during subsequent movement; S3: after the soil completely enters the pipe and forms a soil column, the first half-circular pipe and the second half-circular pipe are lifted out of the soil by a crane or a suspension machine hooked to the hanging ears, then the first half-circular pipe and the second half-circular pipe are separated in reverse by using the connecting mechanism, so as to facilitate taking out the soil column in the pipe.

[0013] Compared with the known prior art, the technical scheme provided by the present application has the following beneficial effects: I. When the soil column in the field needs to be sampled, the second half-circular pipe and the first half-circular pipe are butted, and in this process, the first half-circular pipe and the second half-circular pipe are fixed and connected by the connecting mechanism. After the first half-circular pipe and the second half-circular pipe are connected and form a complete cylindrical pipe, the complete cylindrical pipe is inserted into the soil layer in the field, then after the soil gradually enters the pipe, the pressure generated by the soil will extrude the hydraulic response closing mechanism to seal the opening, preventing the soil from falling from the inside during subsequent movement. After the soil completely enters the pipe and forms a soil column, the first half-circular pipe and the second half-circular pipe are lifted out of the soil by a crane or a suspension machine hooked to the hanging ears, then the first half-circular pipe and the second half-circular pipe are separated in reverse by using the connecting mechanism, so as to facilitate taking out the soil column in the pipe, and prevent the soil column in the pipe from being damaged.

[0014] II. When the pressure plate is stressed, the load-bearing plate can be synchronously linked to bear the stress, the third spring and the fourth spring are used to conveniently reset the load-bearing plate and the pressure plate, preventing uneven stress caused by the load-bearing plate bearing stress alone, and the telescopic rod can prevent damage caused by bending deformation of the first spring. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creating any inventive labor.

[0016] Figure 1 is a front view of the present application; Figure 2 This is a perspective view of the main cross-section of the present invention; Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle; Figure 4 For the present invention Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a bottom-view perspective view of the present invention.

[0017] In the diagram: 1. First semicircular tube; 101. Hanging ear; 102. Second semicircular tube; 2. Mounting shell; 201. Telescopic rod; 202. First spring; 203. Connecting sleeve; 204. Insertion rod; 205. Mounting groove; 206. Second spring; 207. Snap-fit ​​block; 208. Snap-fit ​​groove; 3. Load-bearing plate; 301. Third spring; 302. Hydraulic groove; 303. Pressure plate; 304. Fourth spring; 305. First piston rod; 306. First piston plate; 307. Second piston plate; 308. Second piston rod; 309. Adhesive plate; 310. Folding plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] Example: A split-type field soil column sampling tube and sampling method, such as Figures 1-5 As shown, it includes a first semicircular tube 1, one end of which is detachably connected to a second semicircular tube 102. A hydraulic induction closing mechanism is provided on the lower side of the first semicircular tube 1. The hydraulic induction closing mechanism is used to close the opening at the lower end of the first semicircular tube 1 and the second semicircular tube 102 when the soil inside is filled. A connecting mechanism is provided on the upper side of the first semicircular tube 1 and the second semicircular tube 102. The connecting mechanism is used to connect and disconnect the first semicircular tube 1 and the second semicircular tube 102. The hydraulic pressure sensitive closing mechanism is composed of a pressure receiving plate 303, a fitting plate 309, a folding plate 310, a hydraulic groove 302, a fourth spring 304, a first piston rod 305, a first piston plate 306, a second piston plate 307 and a second piston rod 308. The hydraulic groove 302 is arranged on the circumferential inner wall of the first semicircular tube 1. The fourth spring 304 is fixedly connected to the upper inner wall of the first semicircular tube 1. The pressure receiving plate 303 is fixedly connected to the lower end of the fourth spring 304. The first piston rod 305 is fixedly connected to the upper end of the pressure receiving plate 303 and movably inserted into the hydraulic groove 302. The folding plate 310 is fixedly connected to the circumferential inner wall of the first semicircular tube 1. The fitting plate 309 is fixedly connected to one end of the folding plate 310. The second piston rod 308 is fixedly connected to one end of the fitting plate 309 and slidably connected to the hydraulic groove 302. The upper ends of the first piston rod 305 and the second piston rod 308 are fixedly connected with the first piston plate 306 and the second piston plate 307, respectively. The first piston plate 306 and the second piston plate 307 are slidably connected to the hydraulic groove 302. The connecting mechanism is composed of a mounting groove 205, a mounting shell 2, a connecting sleeve 203, a plug-in rod 204, a first spring 202, a second spring 206, a clamping block 207 and a clamping groove 208. The mounting shell 2 and the connecting sleeve 203 are fixedly connected to the upper ends of the second semicircular tube 102 and the first semicircular tube 1, respectively. The first spring 202 is fixedly connected to the inner wall of one side of the mounting shell 2. The plug-in rod 204 is fixedly connected to one end of the first spring 202. The clamping groove 208 and the mounting groove 205 are arranged on the upper ends of the plug-in rod 204 and the connecting sleeve 203, respectively. The second spring 206 is fixedly connected to the lower inner wall of the mounting groove 205. The clamping block 207 is fixedly connected to the upper end of the second spring 206 and movably clamped in the clamping groove 208.

[0021] In the specific embodiment of the present application, when it is necessary to sample the soil column in the field, the second semicircular tube 102 and the first semicircular tube 1 are butted. In this process, the plug-in rod 204 is inserted into the connecting sleeve 203. Then, the plug-in rod 204 is ejected to the connecting position of the connecting sleeve 203 through the elastic expansion of the first spring 202. Then, the clamping block 207 is ejected and clamped into the clamping groove 208 through the elastic expansion of the second spring 206 fixedly connected in the mounting groove 205. The first semicircular tube 1 and the second semicircular tube 102 are fixed and connected through the connection of the clamping block 207 and the clamping groove 208. After the first half pipe 1 and the second half pipe 102 are connected and form a complete cylindrical pipe, the cylindrical pipe is inserted into the soil in the field, and then, after the soil gradually enters the pipe, the pressure generated by the soil extrudes the pressure plate 303, so that the first piston rod 305 connected to the upper end of the pressure plate 303 pushes the first piston plate 306 to move into the hydraulic groove 302, extrudes the liquid in the hydraulic groove 302, and synchronously extrudes the second piston plate 307 and the second piston rod 308 to move to the other end, thereby driving the abutting plate 309 to move to the left until the abutting plate 309 moves and abuts against the opening at the lower end of the first half pipe 1 and the second half pipe 102, and at the same time, the folded folding plate 310 is pulled to be flat to an unfolded state, so as to seal the opening and prevent soil from falling from the inside during subsequent movement. After the soil completely enters the pipe and forms a soil column, the first half pipe 1 and the second half pipe 102 are lifted out of the soil by the crane or the suspension machine hooking the hanging ears 101, and then the first half pipe 1 and the second half pipe 102 are separated in the reverse direction by using the connecting mechanism, so as to facilitate taking out the soil column inside.

[0022] Preferably, the first half pipe 1 and the second half pipe 102 are made of mn13 material, which guarantees strength and wear resistance and is suitable for different types of field soil.

[0023] Preferably, the opening at the lower end of the first half pipe 1 and the second half pipe 102 can be adjusted to be enlarged or reduced at will, and the second piston plate 307 should be appropriately adjusted in size to match the opening, so as to facilitate the rapid and slow entry of soil.

[0024] For details, please refer to Figures 1-5 The upper inner wall of the second half pipe 102 is fixedly connected with a third spring 301, the lower end of the third spring 301 is fixedly connected with a bearing plate 3, one side of the inner wall of the mounting shell 2 is fixedly connected with an extension rod 201, and the first spring 202 is sleeved on the circumferential surface of the extension rod 201.

[0025] In this embodiment, when the pressure plate 303 is stressed, the bearing plate 3 can be synchronously linked to bear stress, the bearing plate 3 and the pressure plate 303 can be conveniently reset by the third spring 301 and the fourth spring 304, stress unevenness caused by the bearing plate 3 bearing stress alone is prevented, and damage caused by bending deformation of the first spring 202 is prevented by the extension rod 201.

[0026] For details, please refer to Figures 1-5 The upper end of the first half pipe 1 is fixedly connected with two hanging ears 101, one end of each of the two hanging ears 101 is provided with a hanging hole, one end of the clamping block 207 is a bevel, and the clamping block 207 is trapezoidal.

[0027] In this embodiment: through two hanging ears 101 and hanging interfaces, it is convenient for external hooks or suspension equipment to hook, and the first half circular tube 1 and the second half circular tube 102 are pulled out from the soil, and through the trapezoidal shape of the clamping block 207, the clamping block 207 is conveniently clamped into the clamping groove 208.

[0028] Preferably, the first piston rod 305 and the second piston rod 308 are both soft materials, can move along with the curved pipeline of the hydraulic tank 302, and are memory plastic, and can reset to be vertical when the second piston rod 308 and the first piston rod 305 are stretched out.

[0029] Working principle: When it is needed to sample the soil column in the field, the second half circular tube 102 and the first half circular tube 1 are butted, and in the process, the insertion rod 204 is inserted into the connecting sleeve 203, then the elastic expansion of the first spring 202 makes the insertion rod 204 pop out to the connecting position of the connecting sleeve 203, then the elastic expansion of the second spring 206 fixedly connected in the mounting groove 205 makes the clamping block 207 pop out and clamp into the clamping groove 208, and through the connection of the clamping block 207 and the clamping groove 208, the first half circular tube 1 and the second half circular tube 102 are fixed and connected; After the first half circular tube 1 and the second half circular tube 102 are connected and form a complete cylindrical tube, they are inserted into the soil layer in the field, then after the soil gradually enters the tube, the pressure generated will extrude the pressure plate 303, so that the first piston rod 305 connected to the upper end pushes the first piston plate 306 to move into the hydraulic tank 302, extrudes the liquid in the hydraulic tank 302, and synchronously extrudes the second piston plate 307 and the second piston rod 308 to move to the other end, thereby driving the abutting plate 309 to move to the left until it moves and abuts against the opening at the lower end of the first half circular tube 1 and the second half circular tube 102, and at the same time, the folded folding plate 310 is pulled to be flat to an unfolded state, so as to seal the opening, preventing the soil from falling from the inside during subsequent movement; After the soil completely enters the tube and forms a soil column, the first half circular tube 1 and the second half circular tube 102 are lifted out of the soil by the crane or the suspension machine hooking the hanging ear 101, and then the first half circular tube 1 and the second half circular tube 102 are separated in reverse by using the connecting mechanism, so as to conveniently take out the soil column inside.

[0030] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit it; although the foregoing embodiments of the present application have been described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present application.

Claims

1. A split-type field soil column sampling tube and sampling method, comprising a first semicircular tube (1), characterized in that: One end of the first semicircular tube (1) is detachably connected to the second semicircular tube (102). A hydraulic induction closing mechanism is provided on the lower side of the first semicircular tube (1). The hydraulic induction closing mechanism is used to close the opening at the lower end of the first semicircular tube (1) and the second semicircular tube (102) when the soil inside is filled. A connecting mechanism is provided on the upper side of the first semicircular tube (1) and the second semicircular tube (102). The connecting mechanism is used to connect and disconnect the first semicircular tube (1) and the second semicircular tube (102).

2. The split-type field soil column sampling tube and sampling method according to claim 1, characterized in that: The hydraulic induction closing mechanism consists of a pressure plate (303), a bonding plate (309), a folding plate (310), a hydraulic groove (302), a fourth spring (304), a first piston rod (305), a first piston plate (306), a second piston plate (307), and a second piston rod (308). The hydraulic groove (302) is formed on the inner circumference of the first semi-circular tube (1). The fourth spring (304) is fixedly connected to the upper inner wall of the first semi-circular tube (1). The pressure plate (303) is fixedly connected to the lower end of the fourth spring (304). The first piston rod (305) is fixedly connected to the upper end of the pressure plate (303), and the first piston rod (308) is fixedly connected to the upper end of the pressure plate (303). 305) is movably inserted into the hydraulic groove (302). The folding plate (310) is fixedly connected to the inner circumference of the first semi-circular tube (1). The bonding plate (309) is fixedly connected to one end of the folding plate (310). The second piston rod (308) is fixedly connected to one end of the bonding plate (309) and the second piston rod (308) is slidably connected in the hydraulic groove (302). The upper ends of the first piston rod (305) and the second piston rod (308) are respectively fixedly connected to the first piston plate (306) and the second piston plate (307). The first piston plate (306) and the second piston plate (307) are both slidably connected in the hydraulic groove (302).

3. The split-type field soil column sampling tube and sampling method according to claim 2, characterized in that: A third spring (301) is fixedly connected to the upper inner wall of the second semi-circular tube (102), and a load-bearing plate (3) is fixedly connected to the lower end of the third spring (301).

4. The split-type field soil column sampling tube and sampling method according to claim 3, characterized in that: The connecting mechanism consists of a mounting groove (205), a mounting shell (2), a connecting sleeve (203), a plug rod (204), a first spring (202), a second spring (206), a snap-fit ​​block (207), and a snap-fit ​​groove (208). The mounting shell (2) and the connecting sleeve (203) are respectively fixedly connected to the upper ends of the second semicircular tube (102) and the first semicircular tube (1). The first spring (202) is fixedly connected to the inner wall of one side of the mounting shell (2). The plug rod (204) is fixedly connected to one end of the first spring (202). The snap-fit ​​groove (208) and the mounting groove (205) are respectively opened on the upper ends of the plug rod (204) and the connecting sleeve (203). The second spring (206) is fixedly connected to the lower inner wall of the mounting groove (205). The snap-fit ​​block (207) is fixedly connected to the upper end of the second spring (206), and the snap-fit ​​block (207) is movably snapped into the snap-fit ​​groove (208).

5. The split-type field soil column sampling tube and sampling method according to claim 4, characterized in that: A telescopic rod (201) is fixedly connected to one side of the inner wall of the mounting shell (2), and the first spring (202) is sleeved on the circumferential surface of the telescopic rod (201).

6. The split-type field soil column sampling tube and sampling method according to claim 5, characterized in that: The upper end of the first semi-circular tube (1) is fixedly connected to two hanging ears (101), and one end of each of the two hanging ears (101) is provided with a hanging interface.

7. The split-type field soil column sampling tube and sampling method according to claim 6, characterized in that: One end of the snap-fit ​​block (207) is inclined, and the snap-fit ​​block (207) is trapezoidal.

8. A split-type field soil column sampling tube and sampling method, comprising the following steps: S1: When it is necessary to sample the soil column in the field, the second semicircular tube (102) and the first semicircular tube (1) are connected. During this process, the plug rod (204) is inserted into the connecting sleeve (203). Then, through the elastic expansion of the first spring (202), the plug rod (204) is popped out to the connecting sleeve (203) to be connected. Then, through the elastic expansion of the second spring (206) fixed in the mounting groove (205), the snap block (207) is pushed out and snapped into the snap groove (208). Through the connection of the snap block (207) and the snap groove (208), the first semicircular tube (1) and the second semicircular tube (102) are fixed and connected. S2: After the first semicircular tube (1) and the second semicircular tube (102) are connected to form a complete cylindrical tube, it is inserted into the soil layer in the field. Then, as the soil gradually enters the tube, the pressure generated will squeeze the pressure plate (303), causing the first piston rod (305) connected to its upper end to push the first piston plate (306) into the hydraulic tank (302) and squeeze the liquid in the hydraulic tank (302). Simultaneously, it will squeeze the second piston plate (307) and the second piston rod (308) to move to the other end, thereby driving the bonding plate (309) to move to the left until it moves and abuts against the opening at the lower end of the first semicircular tube (1) and the second semicircular tube (102). At the same time, it will pull the folded plate (310) to lay flat in the unfolded state, so as to seal the opening and prevent the soil from falling out of the inside during subsequent movement. S3: After the soil has completely entered the pipe and formed a soil column, the first semicircular pipe (1) and the second semicircular pipe (102) are lifted out of the soil by hooking the connecting ear (101) with an external crane or hanging machine. Then, the connecting mechanism is used in reverse to separate the first semicircular pipe (1) and the second semicircular pipe (102) so that the soil column inside can be taken out.

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