Ground surface matrix sampling device

Abstract

The invention discloses an earth surface matrix sampling device, and belongs to the technical field of sampling devices for earth key zone survey, earth surface matrix survey, ecological geology survey and the like to reveal earth shallow covering feature attributes, the earth surface matrix sampling device comprises a sampling pipe and a power source, openings are formed in the two ends of the sampling pipe, one end of the sampling pipe is detachably connected with the power source, and the other end of the sampling pipe is detachably connected with the power source. An opening and closing cover for opening and closing an opening in the bottom of the sampling pipe and a crushing head for crushing gravels are arranged at the bottom end of the sampling pipe, the opening and closing cover is rotationally connected with one side of the sampling pipe, and the opening and closing cover can rotate forwards and backwards within the range between the inner wall of the sampling pipe and the horizontal plane; sharp teeth are arranged on the bottom surface of the crushing head, and the crushing head is arranged on the periphery of the opening and closing cover; gravels are crushed through the crushing head, so that a matrix layer sample containing more gravel fragments smoothly enters the sampling pipe, the defect that a sampling device in the prior art cannot sample in low mountains and hills with high gravel content is overcome, original-state sampling can be kept, and accurate reference information is provided for scientific research and investigation.

Description

Technical Field

[0001] The present invention relates to the technical field of sampling devices for geological surveys such as earth key zone surveys, surface matrix surveys, and ecological geological surveys for the purpose of revealing characteristic properties of the earth's shallow covering, and in particular to a surface matrix sampling device. Background Art

[0002] The existing backpack drills (shallow drilling 0-5m) used in surface matrix surveys are mostly shallow soil drills used by the agricultural sector, which are only used to sample soil samples. The soil in low mountain and hilly areas is relatively loose, but the surface matrix layer has a high gravel content. Traditional shallow sampling drills have problems such as difficulty in encountering gravel footage, high compression rate of the surface matrix, and difficulty in sampling. It is always the case that the footage is 1m and the sampling is 0, which greatly reduces the work efficiency. The use of Luoyang shovels for construction consumes a lot of physical strength of the users and has low work efficiency.

[0003] Therefore, how to design a surface matrix sampling device so that it can be used for sampling in low mountain and hilly areas with high gravel content is a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0004] The purpose of the present invention is to provide a surface matrix sampling device in view of the defects and shortcomings in the prior art, so as to make up for the defect that the prior art cannot sample in low mountain and hilly areas with high gravel content.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention provides a surface matrix sampling device, comprising a sampling tube and a power source for providing power to the sampling tube so that the sampling tube can be inserted into the soil, both ends of the sampling tube are provided with openings, and one end of the sampling tube is detachably connected to the power source, the bottom end of the sampling tube is provided with an opening and closing cover for opening and closing the bottom opening of the sampling tube and a crushing head for crushing gravel, the opening and closing cover is rotatably connected to one side of the sampling tube, and the opening and closing cover can rotate forward and backward within the range between the inner wall of the sampling tube and the horizontal plane; the bottom surface of the crushing head is provided with sharp teeth, and the crushing head is placed on the periphery of the opening and closing cover.

[0007] Preferably, the sampling tube comprises a sampling outer tube and a sampling inner tube placed inside the sampling outer tube, the sampling inner tube is an opening and closing tube, the crushing head is placed at the bottom end of the sampling outer tube, and the opening and closing cover is placed at the bottom end of the sampling inner tube; and the power source is a power hammer for providing vertical hammer force.

[0008] Preferably, a rotating shaft is provided on one side of the bottom end surface of the sampling inner tube, a torsion spring is sleeved on the rotating shaft, the opening and closing cover is fixedly connected to the rotating shaft, an annular boss is provided inside the sampling outer tube, the maximum distance between the rotating shaft and the annular boss is L1, and the projection length of the inner hole of the annular boss in the direction of the maximum distance between the rotating shaft and the opening and closing cover is L2, and L1>L2.

[0009] Preferably, the bottom end of the sampling inner tube is placed on the annular boss, and the top surface of the sampling inner tube is in contact with the power hammer;

[0010] The sampling outer tube is threadedly connected to the power hammer.

[0011] Preferably, the sampling inner tube is in contact with the power hammer via an integrated elastic buffer structure.

[0012] Preferably, an annular groove is provided on the top surface of the sampling inner tube, a buffer block is provided in the annular groove, and the buffer block is in contact with the power hammer.

[0013] Preferably, a hammer head is provided at the lower portion of the power hammer, the force-applying portion of the power hammer is connected to the hammer head via a connecting piece, the hammer head is threadedly connected to the sampling outer tube, and the buffer block is in contact with the hammer head.

[0014] Preferably, a handle for easy gripping is provided on the top of the power hammer, and the handle is fixedly connected to the power hammer.

[0015] Preferably, the handle, the connector, the outer sampling tube and the inner sampling tube are all made of lightweight high-strength material.

[0016] Preferably, the crushing head is an annular diamond crushing head surrounding the bottom surface of the sampling outer tube.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] 1. The present invention adopts a crushing head arranged at the bottom of the sampling tube to crush the gravel in the surface matrix, so that the sampling tube can be smoothly inserted into the surface matrix, and the crushed small pieces of gravel can also more easily pass through the opening at the bottom of the sampling tube, so that the sampling tube can smoothly obtain geological samples, avoiding the problem that the compression rate of the surface matrix is ​​too high during sampling and the sampling cannot be effectively sampled due to the gravel blocking the opening at the bottom of the sampling tube. That is, the surface matrix sampling device of the present invention can be applied to the geological environment with high gravel content in low mountain and hilly areas, making up for the defect that the sampling device in the prior art cannot smoothly sample in low mountain and hilly areas.

[0019] Other technical solutions of the present invention have achieved the following technical effects compared with the prior art:

[0020] 2. The present invention adopts a sampling tube including a sampling outer tube and a sampling inner tube, and the sampling inner tube is set as an open and close tube, a crushing head is set at the bottom end of the sampling outer tube, and an open and close cover is set at the bottom end of the sampling inner tube. The surface matrix sample is stored in the interior of the sampling inner tube. After the sampling is completed, the sampling inner tube is taken out and the half tube on one side is opened, so that the surface matrix layer structure in the sampling inner tube can be observed, and the cataloging and the collection of the original sample can be realized; and the power hammer provides a vertical hammering force, so that the sampling tube is inserted into the soil for sampling. Compared with the drilling method used in the prior art, it can reduce the disturbance to the soil and better maintain the original state of the soil sample, so as to provide more accurate reference materials for scientific research. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a schematic diagram of the overall structure of a surface matrix sampling device disclosed in a specific embodiment of the present invention;

[0023] Figure 2 It is a partial cross-sectional structural schematic diagram of a surface matrix sampling device disclosed in a specific embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure between the sampling inner tube and the opening and closing cover disclosed in a specific embodiment of the present invention.

[0025] Among them, 1. handle; 2. connecting piece; 3. power hammer; 4. hammer head; 5. sampling outer tube; 6. sampling inner tube; 7. crushing head; 8. annular groove; 9. buffer block; 10. rotating shaft; 11. opening and closing cover; 12. annular boss; 13. torsion spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 3 As shown, the present invention provides a surface matrix sampling device, including a sampling tube and a power source, the power source is used to apply force to the sampling tube so that the sampling tube is inserted into the soil, the sampling tube is a structure with two ends open, and one end of the sampling tube is detachably connected to the power source, the bottom end of the sampling tube is provided with an opening and closing cover 11 for opening and closing the bottom opening of the sampling tube and a crushing head 7 for crushing gravel, the opening and closing cover 11 is rotatably connected to one side of the sampling tube, and the opening and closing cover 11 can rotate forward and reversely within the range between the inner wall of the sampling tube and the horizontal plane; the bottom surface of the crushing head 7 is provided with sharp teeth, and the crushing head 7 is placed on the periphery of the opening and closing cover 11. Among them, the horizontal plane refers to the top surface of the opening and closing cover 11 in a horizontal state, the forward rotation refers to the rotation of the opening and closing cover 11 from the horizontal plane to the direction closer and closer to the inner wall of the sampling tube, and the reverse rotation refers to the rotation of the opening and closing cover 11 from the inner wall of the sampling tube to the direction closer and closer to the horizontal plane.

[0029] When sampling, the power source is started, and the force applied by the power source is transmitted to the sampling tube, so that the sampling tube is inserted downward into the sampling area. The sharp teeth on the crushing head 7 can crush the gravel in the sampling area to prevent larger gravel from blocking the opening at the bottom of the sampling tube. Under the push of the surface matrix, the opening and closing cover 11 rotates forward to open the opening at the bottom of the sampling tube, so that the surface matrix enters the interior of the sampling tube; after the sampling is completed, the power source is closed and lifted upward to remove the sampling tube from the sampling hole. When the sampling tube is lifted, the force applied by the matrix at the bottom of the sampling tube to the opening and closing cover 11 gradually decreases, and the opening and closing cover 11 starts to rotate in the opposite direction to close the opening at the bottom of the sampling tube, ensuring that the removed matrix can be kept inside the sampling tube without falling off.

[0030] The sampling tube includes a sampling outer tube 5 and a sampling inner tube 6 placed inside the sampling outer tube 5. The sampling inner tube 6 is an open-close tube, and a crushing head 7 is placed at the bottom end of the sampling outer tube 5. The open-close cover 11 is placed at the bottom end of the sampling inner tube 6. The power source is a power hammer 3 for providing a vertical hammering force. The open-close tube can adopt the existing technology. In order to improve the crushing efficiency, the crushing head 7 is set to be an annular diamond crushing head 7 surrounding the bottom surface of the sampling outer tube 5.

[0031] A rotating shaft 10 is provided on one side of the bottom end surface of the sampling inner tube 6, and a torsion spring 13 is sleeved on the rotating shaft 10. The opening and closing cover 11 is fixedly connected to the rotating shaft 10. When sampling, under the push of the matrix, the opening and closing cover 11 overcomes the force of the torsion spring 13 and rotates toward the inside of the sampling inner tube 6 to open the opening at the bottom of the sampling inner tube 6; when the sampling inner tube 6 is taken out of the soil, the opening and closing cover 11 rotates in the opposite direction driven by the torsion spring 13; an annular boss 12 is provided inside the sampling outer tube 5, and the maximum distance between the rotating shaft 10 and the opening and closing cover 11 is L1, and the projection length of the inner hole of the annular boss 12 in the direction with the maximum distance between the rotating shaft 10 and the opening and closing cover 11 is L2, L1>L2, so that when the opening and closing cover 11 rotates in the opposite direction, the annular boss 12 can resist the opening and closing cover 11 to prevent the opening and closing cover 11 from rotating toward the outside of the sampling inner tube 6, thereby keeping the taken-out matrix in the sampling inner tube 6. In one embodiment, the annular boss 12 is a circular boss, L2 is the inner diameter of the circular boss, and the opening and closing cover 11 is a circular structure. When the opening and closing cover 11 is against the circular boss, the opening and closing cover 11 can completely block the inner hole of the circular boss. Moreover, even if gravel is stuck between the bottom of the opening and closing cover 11 and the circular boss, that is, the opening and closing cover 11 is against the gravel in an inclined state, the inner hole of the circular boss can be blocked to a certain extent. In another embodiment, the diameter of the sampling inner tube 6 is 5cm to 10cm larger than that of the conventional sampling tube, so that the matrix containing crushed gravel can smoothly enter the sampling inner tube 6. The bottom end of the sampling inner tube 6 is placed on the annular boss 12, and the top surface is in contact with the power hammer 3 to realize the detachable connection between the sampling inner tube 6 and the power hammer 3, and the sampling outer tube 5 is threadedly connected to the power hammer 3. In order to better demonstrate the relationship between the rotating shaft 10, the torsion spring 13 and the opening and closing cover 11, Figure 3 Only a portion of the sampling inner tube 6 is shown.

[0032] Compared with the sampling outer tube 5 of the integral structure, the ability of the opening and closing tube to withstand the hammer force is relatively weak. For this reason, the sampling inner tube 6 is provided to contact the power hammer 3 through an elastic buffer structure. The elastic buffer structure is an integrated structure. The hammer force is transmitted downward to the sampling inner tube 6 through the elastic buffer structure to avoid damage to the sampling inner tube 6 due to excessive force. In one embodiment, the top surface of the sampling inner tube 6 is provided with an annular groove 8, and a buffer block 9 is provided inside the annular groove 8. The buffer block 9 is in contact with the power hammer 3.

[0033] In one embodiment, a hammer head 4 is provided at the lower part of the power hammer 3, and the force-applying part of the power hammer 3 is connected to the hammer head 4 through the connector 2. The lower end of the hammer head 4 is threadedly connected to the sampling outer tube 5, and the buffer block 9 placed on the top of the sampling inner tube 6 is in contact with the lower end of the hammer head 4, that is, the power of the power hammer 3 is transmitted downward through the hammer head 4. The hammer head 4 and the connector 2 can be an integrally formed structure, or the hammer head 4 and the connector 2 can be two independently formed parts. If the latter, the hammer head 4 and the connector 2 are detachably connected to facilitate the replacement of damaged parts.

[0034] For easy carrying, a handle 1 for easy grip is also provided on the top of the power hammer 3. The handle 1 is fixedly connected to the power hammer 3, and the handle 1, the connecting piece 2, the sampling outer tube 5 and the sampling inner tube 6 are all made of lightweight high-strength material.

[0035] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A surface matrix sampling device, characterized in that: It comprises a sampling tube and a power source for providing power to the sampling tube so that the sampling tube can be inserted into the soil, both ends of the sampling tube are provided with openings, and one end of the sampling tube is detachably connected to the power source, the bottom end of the sampling tube is provided with an opening and closing cover for opening and closing the bottom opening of the sampling tube and a crushing head for crushing gravel, the opening and closing cover is rotatably connected to one side of the sampling tube, and the opening and closing cover can rotate forward and reversely within the range between the inner wall of the sampling tube and the horizontal plane; the bottom surface of the crushing head is provided with sharp teeth, and the crushing head is placed on the periphery of the opening and closing cover.

2. The surface matrix sampling device according to claim 1, characterized in that: The sampling tube includes a sampling outer tube and a sampling inner tube placed inside the sampling outer tube, the sampling inner tube is an open and close tube, the crushing head is placed at the bottom end of the sampling outer tube, and the open and close cover is placed at the bottom end of the sampling inner tube; and the power source is a power hammer for providing vertical hammer force.

3. The surface matrix sampling device according to claim 2, characterized in that: A rotating shaft is provided on one side of the bottom end surface of the sampling inner tube, a torsion spring is sleeved on the rotating shaft, the opening and closing cover is fixedly connected to the rotating shaft, an annular boss is provided inside the sampling outer tube, the maximum distance between the rotating shaft and the annular boss is L1, and the projection length of the inner hole of the annular boss in the direction of the maximum distance between the rotating shaft and the opening and closing cover is L2, and L1>L2.

4. The surface matrix sampling device according to claim 3, characterized in that: The bottom end of the sampling inner tube is placed on the annular boss, and the top surface of the sampling inner tube is in contact with the power hammer; The sampling outer tube is threadedly connected to the power hammer.

5. The surface matrix sampling device according to claim 4, characterized in that: The sampling inner tube is in contact with the power hammer through an integrated elastic buffer structure.

6. The surface matrix sampling device according to claim 5, characterized in that: An annular groove is arranged on the top surface of the sampling inner tube, a buffer block is arranged in the annular groove, and the buffer block is in contact with the power hammer.

7. The surface matrix sampling device according to claim 6, characterized in that: A hammer head is provided at the lower part of the power hammer, the force-applying part of the power hammer is connected to the hammer head through a connecting piece, the hammer head is threadedly connected to the sampling outer tube, and the buffer block is in contact with the hammer head.

8. The surface matrix sampling device according to claim 7, characterized in that: A handle for easy gripping is provided on the top of the power hammer, and the handle is fixedly connected to the power hammer.

9. The surface matrix sampling device according to claim 8, characterized in that: The handle, the connecting piece, the outer sampling tube and the inner sampling tube are all made of lightweight high-strength material.

10. The surface matrix sampling device according to any one of claims 2 to 7, characterized in that: The crushing head is an annular diamond crushing head surrounding the bottom surface of the sampling outer tube.

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