Sampling device for geotechnical investigation

Abstract

The utility model relates to the technical field of geotechnical investigation, and discloses a geotechnical investigation sampling device which comprises a base, first motors are fixedly installed on the two sides of the upper surface of the base, screw rods are fixedly installed on output shafts of the first motors, and a sampling barrel is rotatably installed in the middle of a movable plate. And an electric telescopic rod is fixedly installed in the middle of the moving frame, a second motor is fixedly installed at the output end of the electric telescopic rod, a drill bit is fixedly connected to the bottom of the rotating rod, and a scraping piece is fixedly connected to the top of the drill bit. A first motor rotates, a screw rotates, a sampling barrel descends, a second motor rotates, a rotating rod and a drill bit rotate, an electric telescopic rod extends, the rotating rod and the drill bit continue to descend and rotate, the drill bit moves downwards while rotating, a scraper rotates along with the drill bit to scrape rock soil separated from the side face, the electric telescopic rod is shortened, and the drill bit moves upwards. And the collected rock soil is collected in the sampling barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of rock and soil exploration, in particular to a rock and soil exploration sampling device. Background Art

[0002] Geotechnical investigation and sampling refers to the practice of collecting geotechnical samples from a certain depth underground using specific tools and methods during geotechnical engineering investigations. Its primary objectives are as follows: first, to accurately understand the physical and mechanical properties of geotechnical materials, such as density, moisture content, compressibility, and shear strength, as well as the strength and hardness of rock; second, to analyze the composition and structure of geotechnical materials to assess their engineering characteristics and stability; and third, to provide reliable data for subsequent engineering design and construction, such as determining the bearing capacity of the foundation and selecting the appropriate foundation type. Geotechnical investigation and sampling, along with related testing and analysis, can better ensure the safety and quality of engineering construction.

[0003] For example, Chinese patent publication number CN219641273U discloses a geotechnical exploration sampling assembly, comprising a circular disk, a sampling tube being threadedly connected to the top of the circular disk through an opening, sliding rods being slidably connected to the top of the circular disk and on both sides of the sampling tube through openings, a conical head being fixedly connected to the bottom end of the sliding rods, and limiting holes being provided on both sides of the top of the circular disk for matching with the sliding rods. The geotechnical exploration sampling assembly is driven by a motor to rotate a rotating rod, which drives the L-shaped rod to rotate through a rotating plate, thereby driving the sampling tube to rotate and move downward, and driving two sliding rods to move downward. The two sliding rods are inserted into the soil first, and the sampling tube is inserted into the soil later. By inserting the two sliding rods into the soil first, the equipment can be well stabilized, reducing the shaking of the sampling tube drilling the soil, thereby well ensuring the vertical direction of the sampling tube drilling the soil, and greatly improving the accuracy of geotechnical sampling.

[0004] After using the geotechnical survey sampling assembly, it was found that although the sampling assembly can take samples, it cannot sample the geotechnical soil at a specific depth during sampling. Utility Model Content

[0005] The purpose of the utility model is to provide a rock and soil survey sampling device to solve the problem that rock and soil at a specific depth cannot be sampled.

[0006] To achieve the above object, the utility model provides the following technical solution: A geotechnical exploration sampling device, including a base, on both sides of the upper surface of the base, a first motor is fixedly installed, the output shaft of the first motor is fixedly installed with a screw rod, the two screw rods are parallel to each other, the outside of the screw rod is threadedly installed with a moving plate, the middle of the moving plate is rotatably installed with a sampling cylinder, the top of the sampling cylinder is fixedly connected with a gear ring, in the middle of the moving plate, a third motor is fixedly installed, the output shaft of the third motor is fixedly installed with a gear, the gear meshes with the gear ring, on the upper surface of the moving plate, a moving frame is fixedly installed, in the middle of the moving frame, an electric telescopic rod is fixedly installed, the output end of the electric telescopic rod is fixedly installed with a second motor, the output shaft of the second motor is fixedly installed with a rotating rod, the bottom of the rotating rod is fixedly connected with a drill bit, the top of the drill bit is fixedly connected with a scraping blade, and the side of the scraping blade contacts the inner wall of the sampling cylinder.

[0007] Preferably, the top of the drill bit contacts the bottom of the sampling cylinder.

[0008] Preferably, the outer wall of the sampling cylinder is provided with a thread groove, and the side of the drill bit is fixedly connected with a spiral strip.

[0009] Preferably, the rotating rod does not contact the sampling cylinder.

[0010] Preferably, a hole is provided in the middle of the base, and the size of the hole is larger than the size of the sampling cylinder.

[0011] Preferably, the maximum extension distance of the electric telescopic rod is less than the height of the scraping blade, and the second motor does not contact the gear ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, through the rotation of the third motor, the gear rotates and drives the gear ring to rotate, the sampling cylinder rotates, the first motor rotates, the screw rod rotates, the moving plate and the moving frame descend, the sampling cylinder descends, the electric telescopic rod, the second motor, the rotating rod and the drill bit descend accordingly. At the same time, the second motor rotates, the rotating rod and the drill bit rotate, both the sampling cylinder and the drill bit rotate, and they cooperate with each other to break the geotechnical soil. After the sampling cylinder descends to the specified position, the third motor stops rotating, the sampling cylinder stops rotating, the first motor stops rotating, the sampling cylinder stops descending, the electric telescopic rod extends, the rotating rod and the drill bit continue to descend, and they are separated from the sampling cylinder. The second motor continues to rotate, the rotating rod and the drill bit continue to rotate, the drill bit rotates while moving downward, the scraping blade rotates with the drill bit, scrapes off the geotechnical soil separated on the side, and collects it on the drill bit. At this time, the electric telescopic rod shortens, the drill bit moves upward, the drill bit contacts the sampling cylinder, and the collected geotechnical soil is collected inside the sampling cylinder. This device can sample the geotechnical soil at a specific depth. Brief Description of the Drawings

[0014] Figure 1 It is a schematic three-dimensional structure diagram of the present utility model;

[0015] Figure 2 It is a schematic structure diagram of the sampling cylinder and the drill bit of the present utility model;

[0016] Figure 3 It is a schematic structure diagram of the drill bit detaching from the sampling cylinder of the present utility model;

[0017] Figure 4 It is a schematic upper structure diagram of the drill bit of the present utility model;

[0018] Figure 5 It is a schematic side sectional structure diagram of the sampling cylinder and the drill bit of the present utility model.

[0019] In the figure: 1. Base; 101. First motor; 102. Screw; 2. Moving plate; 201. Moving frame; 3. Electric telescopic rod; 301. Second motor; 302. Rotating rod; 303. Drill bit; 304. Scraper; 4. Sampling cylinder; 401. Tooth ring; 402. Gear; 403. Third motor. Detailed Embodiment

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Please refer to Figures 1-5, the present utility model provides a technical solution: a geotechnical exploration sampling device, including a base 1 placed on the ground. On both sides of the upper surface of the base 1, a first motor 101 is fixedly installed. The output shaft of the first motor 101 is fixedly installed with a screw rod 102. When the first motor 101 rotates, the screw rod 102 rotates. The first motors 101 are completely the same and rotate synchronously. The two screw rods 102 are parallel to each other, completely the same and rotate synchronously. A moving plate 2 is threadedly installed on the outer side of the screw rod 102. When the screw rod 102 rotates, the moving plate 2 can move up and down. A sampling cylinder 4 is rotatably installed in the middle of the moving plate 2. During the process of the moving plate 2 moving downward, the sampling cylinder 4 rotates simultaneously and can drill into the geotechnical layer. The sampling cylinder 4 can drill to different depths according to requirements. A gear ring 401 is fixedly connected to the top of the sampling cylinder 4. A third motor 403 is fixedly installed in the middle of the moving plate 2. The output shaft of the third motor 403 is fixedly installed with a gear 402. The gear 402 meshes with the gear ring 401. When the third motor 403 rotates, the gear 402 can rotate and drive the gear ring 401 to rotate, and finally make the sampling cylinder 4 rotate. A moving frame 201 is fixedly installed on the upper surface of the moving plate 2. The moving plate 2 and the moving frame 201 are an integral body. An electric telescopic rod 3 is fixedly installed in the middle of the moving frame 201. The output end of the electric telescopic rod 3 is fixedly installed with a second motor 301. The output shaft of the second motor 301 is fixedly installed with a rotating rod 302. The bottom of the rotating rod 302 is fixedly connected with a drill bit 303. When the first motor 101 rotates, the screw rod 102 rotates, and the moving plate 2 and the moving frame 201 descend, and the sampling cylinder 4 descends. The electric telescopic rod 3, the second motor 301, the rotating rod 302 and the drill bit 303 descend accordingly. At the same time, the second motor 301 rotates, and the rotating rod 302 and the drill bit 303 rotate. The drill bit 303 breaks the geotechnical layer below. After the sampling cylinder 4 descends to the designated position, the third motor 403 stops rotating, the sampling cylinder 4 stops rotating, the first motor 101 stops rotating, and the sampling cylinder 4 stops moving downward. The electric telescopic rod 3 extends, and the rotating rod 302 and the drill bit 303 continue to descend and separate from the sampling cylinder 4. The second motor 301 continues to rotate, and the rotating rod 302 and the drill bit 303 continue to rotate. A scraping blade 304 is fixedly connected to the top of the drill bit 303. The side of the scraping blade 304 contacts the inner wall of the sampling cylinder 4. While the drill bit 303 rotates and moves downward, the scraping blade 304 rotates with the drill bit 303, scrapes off the geotechnical layer separated from the side, and collects it on the drill bit 303. At this time, the drill bit 303 moves upward, contacts the sampling cylinder 4, and moves upward together, and finally the geotechnical layer is taken out.

[0022] Among them, the top of the drill bit 303 contacts the bottom of the sampling cylinder 4. During the process of the sampling cylinder 4 descending, when it has not reached the target area, the geotechnical layer will not enter the interior.

[0023] Among them, a threaded groove is provided on the outer wall of the sampling cylinder 4 to export the rock and soil. A spiral strip is fixedly connected to the side of the drill bit 303 to break the rock and soil.

[0024] Among them, the rotating rod 302 does not contact the sampling cylinder 4, and the rotating rod 302 rotates inside the sampling cylinder 4.

[0025] Among them, a hole is provided in the middle of the base 1, and the size of the hole is larger than that of the sampling cylinder 4. The hole allows the sampling cylinder 4 to pass through.

[0026] Among them, the maximum extension distance of the electric telescopic rod 3 is less than the height of the scraping blade 304. The second motor 301 does not contact the gear ring 401. The scraping blade 304 will not completely separate from the sampling cylinder 4. The distance between the second motor 301 and the gear ring 401 is relatively large and they will not contact.

[0027] Working principle: When in use, the third motor 403 rotates, the gear 402 rotates and drives the gear ring 401 to rotate, the sampling cylinder 4 rotates, the first motor 101 rotates, the screw rod 102 rotates, the moving plate 2 and the moving frame 201 descend, the sampling cylinder 4 descends, and the electric telescopic rod 3, the second motor 301, the rotating rod 302 and the drill bit 303 descend accordingly. At the same time, the second motor 301 rotates, the rotating rod 302 and the drill bit 303 rotate, both the sampling cylinder 4 and the drill bit 303 rotate, and they cooperate with each other to break the rock and soil. After the sampling cylinder 4 descends to the designated position, the third motor 403 stops rotating, the sampling cylinder 4 stops rotating, the first motor 101 stops rotating, the sampling cylinder 4 stops descending, the electric telescopic rod 3 extends, the rotating rod 302 and the drill bit 303 continue to descend and separate from the sampling cylinder 4. The second motor 301 continues to rotate, the rotating rod 302 and the drill bit 303 continue to rotate. The drill bit 303 rotates while moving downward. The scraping blade 304 rotates along with the drill bit 303, scrapes off the rock and soil separated from the side, and collects it on the drill bit 303. At this time, the electric telescopic rod 3 contracts, the drill bit 303 moves upward, the drill bit 303 contacts the sampling cylinder 4, and the collected rock and soil is collected inside the sampling cylinder 4. The second motor 301 stops rotating, the drill bit 303 stops rotating, the first motor 101 rotates in the reverse direction, and the internal device moves upward together, and finally the rock and soil is taken out.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes and modifications can be made to these embodiments without departing from the principle of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geotechnical exploration sampling device, comprising a base (1), characterized in that: A first motor (101) is fixedly mounted on both sides of the upper surface of the base (1), a screw (102) is fixedly mounted on the output shaft of the first motor (101), the two screws (102) are parallel to each other, a movable plate (2) is threadedly mounted on the outer side of the screw (102), a sampling barrel (4) is rotatably mounted on the middle part of the movable plate (2), a gear ring (401) is fixedly connected to the top of the sampling barrel (4), a third motor (403) is fixedly mounted on the middle part of the movable plate (2), a gear (402) is fixedly mounted on the output shaft of the third motor (403), and the gear (402) is fixedly mounted on the output shaft of the third motor (403). 02) is engaged with the gear ring (401), a movable frame (201) is fixedly installed on the upper surface of the movable plate (2), an electric telescopic rod (3) is fixedly installed in the middle of the movable frame (201), a second motor (301) is fixedly installed on the output end of the electric telescopic rod (3), a rotating rod (302) is fixedly installed on the output shaft of the second motor (301), a drill bit (303) is fixedly connected to the bottom of the rotating rod (302), a scraper (304) is fixedly connected to the top of the drill bit (303), and the side of the scraper (304) contacts the inner wall of the sampling tube (4).

2. A geotechnical investigation sampling device according to claim 1, characterized in that: The top of the drill bit (303) contacts the bottom of the sampling cylinder (4).

3. A geotechnical investigation sampling device according to claim 1, characterized in that: The outer wall of the sampling tube (4) is provided with a threaded groove, and the side surface of the drill bit (303) is fixedly connected with a spiral strip.

4. A geotechnical investigation and sampling device according to claim 1, characterized in that: The rotating rod (302) does not contact the sampling cylinder (4).

5. The geotechnical investigation sampling device according to claim 1, characterized in that: A hole is provided in the middle of the base (1), and the size of the hole is larger than the size of the sampling tube (4).

6. The geotechnical investigation sampling device according to claim 1, characterized in that: The maximum extension distance of the electric telescopic rod (3) is less than the height of the scraper (304), and the second motor (301) is not in contact with the gear ring (401).

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