Sampling device for geotechnical engineering investigation

Abstract

The sampling device comprises a rod body and a sampling pipe, a fixed through pipe is fixedly installed at the upper end of the sampling pipe, the rod body is movably connected in the fixed through pipe in a penetrating and inserting mode, the rod body penetrates through the top of the sampling pipe and extends into the sampling pipe, a scraping plate is fixedly installed at the bottom of the rod body, and the scraping plate is fixedly connected with the bottom of the rod body. The scraping disc is located in the sampling pipe, a handle rod is fixedly connected to the upper portion of the rod body in a penetrating and inserting mode, and rubber anti-skid sleeves are fixedly installed on the left side and the right side of the outer surface of the handle rod correspondingly. And the accuracy of the investigation result is reduced. According to the technical scheme, the sampling device for geotechnical engineering investigation is provided. According to the utility model, residues are scraped off by utilizing the friction force between the scraping disc and the inner wall of the sampling tube, so that the collected sample has representativeness, reliability and accuracy.

Description

Technical Field

[0001] The utility model relates to a geotechnical engineering survey sampling device, more specifically, it relates to a geotechnical engineering survey sampling device. Background Art

[0002] The sampling device for geotechnical engineering investigation is a device used to collect samples of geotechnical materials such as soil and rock. It can collect geotechnical materials from their original location and keep their original properties as much as possible for subsequent analysis and testing through different ways and methods.

[0003] The sampling device for geotechnical engineering investigation is a simple sampling tool, usually composed of a steel pipe or drill rod, a sampling head and a drill bit. The sampling device for geotechnical engineering investigation inserts the sampling head into the soil layer by manually rotating the drill rod or drill bit, and then rotates the sampling head back to take out the soil sample.

[0004] Existing sampling devices for geotechnical engineering surveys require the soil in the sampling tube to be removed after use, but at the same time, soil residues will adhere to the tube wall of the sampling tube and are difficult to clean out. The residual soil in the sampling tube will mix with the subsequently collected samples, resulting in sample contamination or mixing, which reduces the accuracy of the survey results.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a sampling device for geotechnical engineering investigation, which drives the scraper plate to move downward when the rod body is manually pushed downward. Since the outer surface of the scraper plate is in contact with the inner wall of the sampling tube, the scraper plate is a special structure, which can slide inside the sampling tube and scrape off the soil residues remaining in the tube. The design principle of the scraper plate is to use the friction between it and the inner wall of the sampling tube to scrape off the residues. The scraper plate is usually made of hard materials, such as stainless steel, tungsten steel, etc., which has high hardness and wear resistance, and can effectively scrape off the soil residues remaining in the tube. The scraper plate is set at the top of the inner cavity of the sampling tube, so that the soil residues remaining in the tube can be scraped off to the maximum extent, avoiding the impact on the samples collected later. Therefore, by setting the scraper plate in the sampling tube, the soil residues remaining in the tube can be effectively cleaned, ensuring that the collected samples are representative, reliable and accurate.

[0007] The above technical purpose of the utility model is achieved through the following technical solutions: a sampling device for geotechnical engineering investigation, including a rod body and a sampling tube, the upper end of the sampling tube is fixedly installed with a fixed through-tube, the rod body is movably inserted and connected in the fixed through-tube, the rod body passes through the top of the sampling tube and extends to the inside of the sampling tube, the bottom of the rod body is fixedly installed with a scraper plate, the scraper plate is located inside the sampling tube, and the upper part of the rod body is fixedly inserted and connected with a handle bar.

[0008] The utility model is further configured as follows: a rubber anti-slip sleeve is fixedly installed on both left and right sides of the outer surface of the handle.

[0009] The utility model is further configured as follows: a through hole is opened on the outer surface of the fixed through pipe, a connecting hole is opened on the lower part of the rod body, the through hole and the connecting hole are connected, positioning bolts are movably inserted and connected in the through hole and the connecting hole, and a nut is threadedly connected to the outer surface of the positioning bolt.

[0010] The utility model is further configured such that the outer wall of the scraper plate is in contact with the inner wall of the sampling tube.

[0011] The utility model is further configured as follows: a coring tooth is fixedly installed on the outer side of the lower end of the sampling tube.

[0012] In summary, the utility model has the following beneficial effects:

[0013] 1. When the rod is pushed downward manually, the scraper plate is driven to move downward. Since the outer surface of the scraper plate is in contact with the inner wall of the sampling tube, the scraper plate is a special structure that can slide inside the sampling tube and scrape off the soil residues remaining in the tube. The design principle of the scraper plate is to use the friction between it and the inner wall of the sampling tube to scrape off the residues. The scraper plate is usually made of hard materials, such as stainless steel, tungsten steel, etc., which have high hardness and wear resistance, and can effectively scrape off the soil residues remaining in the tube. The scraper plate is set at the top of the inner cavity of the sampling tube, so that the soil residues remaining in the tube can be scraped off to the maximum extent, avoiding the impact on the samples collected later. Therefore, by setting the scraper plate in the sampling tube, the soil residues remaining in the tube can be effectively cleaned to ensure that the collected samples are representative, reliable and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the rod body and the scraper disc of the utility model.

[0016] In the figure: 1. Rod body; 2. Sampling tube; 3. Fixed through tube; 4. Scraper plate; 5. Handle bar; 6. Rubber anti-slip sleeve; 7. Through hole; 8. Connecting hole; 9. Positioning bolt; 10. Nut; 11. Core tooth. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0018] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] The utility model is described in detail below in conjunction with the accompanying drawings.

[0021] A sampling device for geotechnical engineering investigation, such as Figure 1 to Figure 2As shown, it includes a rod body 1 and a sampling tube 2, the upper end of the sampling tube 2 is fixedly installed with a fixed through-tube 3, the rod body 1 is movably inserted and connected in the fixed through-tube 3, the rod body 1 passes through the top of the sampling tube 2 and extends to the inside of the sampling tube 2, a scraper plate 4 is fixedly installed at the bottom of the rod body 1, the outer wall of the scraper plate 4 is in contact with the inner wall of the sampling tube 2, the scraper plate 4 is located inside the sampling tube 2, and a handle 5 is fixedly inserted and connected at the upper part of the rod body 1. By holding the handle 5 and manually rotating the rod body 1, the sampling tube 2 is driven to rotate, so that the sampling tube 2 is inserted into the soil layer for sampling, and a sampling plate 4 is provided at the bottom of the sampling tube 2. The core teeth 11 are generally made of steel or alloy. During the sampling process, the core teeth 11 take the soil layer into the sampling tube 2 by rotating and cutting, and compact the soil sample in the sampling tube 2 to ensure the integrity and representativeness of the sampling. Then, the sampling tube 2 together with the soil sample is taken out when the rod body 1 rotates in the opposite direction to complete the sampling work. When the rod body 1 is manually pushed downward, the scraper plate 4 is driven to move downward. Since the outer surface of the scraper plate 4 is in contact with the inner wall of the sampling tube 2, the scraper plate 4 is a special structure, which can slide inside the sampling tube 2 and scrape off the soil residue remaining in the tube. The design principle of the scraper plate 4 is to use the friction between it and the inner wall of the sampling tube 2 to scrape off the residue. The scraper plate 4 is usually made of hard materials, such as stainless steel, tungsten steel, etc., with high hardness and wear resistance, and can effectively scrape off the soil residues remaining in the tube. The scraper plate 4 is arranged on the top of the inner cavity of the sampling tube 2, so that the soil residues remaining in the tube can be scraped off to the maximum extent, avoiding affecting the subsequently collected samples. Therefore, by arranging the scraper plate 4 in the sampling tube 2, the soil residues remaining in the tube can be effectively cleaned up, ensuring that the collected samples are representative, reliable and accurate.

[0022] A rubber anti-skid cover 6 is fixedly installed on both sides of the outer surface of the handle 5. The handle 5 is provided with the rubber anti-skid cover 6 to improve the grip comfort during operation and reduce hand fatigue. The handle 5 is provided with the rubber anti-skid cover 6 to enhance the gripping force and improve the safety during operation.

[0023] A coring tooth 11 is fixedly mounted on the outer side of the lower end of the sampling tube 2. Its main function is to take soil samples into the sampling tube 2 by rotating the coring tooth 11 after drilling into the soil layer, so as to carry out subsequent analysis and testing.

[0024] like Figure 2 As shown, a through hole 7 is provided on the outer surface of the fixed through pipe 3, and a connecting hole 8 is provided on the lower part of the rod body 1. The through hole 7 and the connecting hole 8 are connected, and positioning bolts 9 are movably inserted and connected in the through hole 7 and the connecting hole 8. A nut 10 is threadedly connected to the outer surface of the positioning bolt 9. The nut 10 is separated from the positioning bolt 9 by rotating it. At this time, the rod body 1 and the sampling tube 2 are in an active state.

[0025] Working principle: by holding the handle 5, the rod body 1 is manually rotated to drive the sampling tube 2 to rotate, so that the sampling tube 2 is inserted into the soil layer for sampling. A core tooth 11 is provided at the bottom of the sampling tube 2. The core tooth 11 is generally made of steel or alloy. During the sampling process, the core tooth 11 takes the soil layer into the sampling tube 2 by rotating and cutting, and compacts the soil sample in the sampling tube 2 to ensure the integrity and representativeness of the sampling. Then, when the rod body 1 rotates in the opposite direction, the sampling tube 2 is taken out together with the soil sample to complete the sampling work. The nut 10 is turned to separate it from the positioning bolt 9. At this time, the rod body 1 and the sampling tube 2 are in an active state. When the rod body 1 is manually pushed downward, the scraper plate 4 is driven to move downward. Since the outer surface of the scraper plate 4 is in contact with the inner wall of the sampling tube 2, the scraper plate 4 is a special structure. It can slide inside the sampling tube 2 and scrape off the soil residue remaining in the tube. The design principle of the scraper plate 4 is to use the friction between it and the inner wall of the sampling tube 2 to scrape off the residue. The scraper plate 4 is usually made of hard materials, such as stainless steel, tungsten steel, etc., with high hardness and wear resistance, and can effectively scrape off the soil residues remaining in the tube. The scraper plate 4 is arranged on the top of the inner cavity of the sampling tube 2, so that the soil residues remaining in the tube can be scraped off to the maximum extent, avoiding affecting the subsequently collected samples. Therefore, by arranging the scraper plate 4 in the sampling tube 2, the soil residues remaining in the tube can be effectively cleaned up, ensuring that the collected samples are representative, reliable and accurate.

[0026] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sampling device for geotechnical engineering investigation, comprising a rod body (1) and a sampling tube (2), characterized in that: A fixed through-tube (3) is fixedly mounted on the upper end of the sampling tube (2); the rod body (1) is movably inserted and connected in the fixed through-tube (3); the rod body (1) passes through the top of the sampling tube (2) and extends into the interior of the sampling tube (2); a scraper plate (4) is fixedly mounted on the bottom of the rod body (1); the scraper plate (4) is located inside the sampling tube (2); and a handle bar (5) is fixedly inserted and connected on the upper part of the rod body (1).

2. A sampling device for geotechnical engineering investigation according to claim 1, characterized in that: A rubber anti-slip sleeve (6) is fixedly mounted on both left and right sides of the outer surface of the handlebar (5).

3. A sampling device for geotechnical engineering investigation according to claim 1, characterized in that: The outer surface of the fixed through pipe (3) is provided with a through hole (7), the lower part of the rod body (1) is provided with a connecting hole (8), the through hole (7) and the connecting hole (8) are connected, and positioning bolts (9) are movably inserted and connected in the through hole (7) and the connecting hole (8), and the outer surface of the positioning bolt (9) is threadedly connected with a nut (10).

4. A sampling device for geotechnical engineering investigation according to claim 1, characterized in that: The outer wall of the scraper plate (4) is in contact with the inner wall of the sampling tube (2).

5. A sampling device for geotechnical engineering investigation according to claim 1, characterized in that: A coring tooth (11) is fixedly mounted on the outer side of the lower end of the sampling tube (2).

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