Sand sampler for geotechnical investigation

Abstract

The utility model relates to the technical field of geotechnical investigation, in particular to a geotechnical investigation sand sampler which comprises a sampling tube and a shell, a cavity is defined in the shell, an opening communicated with the cavity is formed in the bottom of the shell, and four containing grooves are formed in the peripheral side wall of the shell at intervals; the four fixing plates are arranged in the four containing grooves respectively, the bottom ends of the fixing plates are rotationally connected with the containing grooves through first shaft bodies, and the fixing plates have a folded state or an unfolded state on the shell; the driving mechanism I is arranged in the cavity; the sampling tube is arranged in the cavity, and a driving mechanism II is arranged in the cavity. The fixing plate is in an unfolded state through the first driving mechanism so as to fix the shell, then the sampling tube is controlled by the second driving mechanism to perform sampling operation, and after the sampling operation is finished, the first driving mechanism is operated to enable the fixing plate to restore to the folded state, so that the occupied area of the fixing plate is reduced, and the portable sampling device is convenient to carry by a user.

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 sand extractor. Background Art

[0002] Geotechnical investigation refers to a series of preliminary investigation activities carried out during the construction process. It mainly includes the investigation, analysis and evaluation of the construction site, and judging the feasibility and rationality of the construction according to the geographical and environmental conditions.

[0003] In the process of geotechnical investigation, in order to obtain real information about underground soil layers, various sampling tools are often needed. Among them, the sand sampler is a tool specially used for sand layer sampling. It can go deep underground and collect sand samples that remain in their original state, thereby helping engineers understand the various parameters of the sand layer.

[0004] Existing sand collectors usually require external fixing devices when operating to prevent the sand collector from deflecting or sinking due to factors such as soil pressure or groundwater flow, thereby ensuring the accuracy and safety of sampling. However, these external fixing devices are often bulky and inconvenient to carry, which affects the efficiency of the survey operation. Therefore, the utility model aims to provide a geotechnical survey sand collector that can integrate a fixing device and a sand collector and is easy for users to carry. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a geotechnical exploration sand collector, which can integrate a fixing device and a sand collector and is convenient for users to carry, so as to solve the problem that the sand collector and the fixing device in the prior art are inconvenient to carry.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a geotechnical exploration sand sampler, including a sampling tube and a shell, which defines a cavity inside, the bottom of the shell is provided with an opening connected to the cavity, and four receiving grooves are spaced apart on the peripheral side wall of the shell; four fixed plates are respectively arranged in the four receiving grooves, the bottom ends of the fixed plates are rotatably connected to the bottom ends of the receiving grooves through a shaft body 1, the fixed plates have a folded form or an unfolded form on the shell, the fixed plates are located in the receiving grooves when in the folded form, and are perpendicular to the receiving grooves when in the unfolded form; a driving mechanism 1 is arranged in the cavity and is used to drive the fixed plate to rotate along the axis of the shaft body 1 so that the fixed plate is in a folded form or an unfolded form on the shell; and a sampling tube is arranged in the cavity and is located below the driving mechanism 1, a driving mechanism 2 is arranged in the cavity, and the driving mechanism 2 is used to drive the sampling tube to move along the height direction of the shell.

[0007] Optionally, the driving mechanism 1 includes a motor 1, a screw 1 and a threaded sleeve; the motor 1 is fixed to the top wall of the cavity, the screw 1 is arranged at the bottom of the motor 1 and is coaxially fixed with its output end, and the threaded sleeve is sleeved on the screw 1 and threadedly connected with it; a receiving groove is provided on the fixing plate, and a connecting piece is provided between the threaded sleeve and the fixing plate, the first end of the connecting piece is arranged in the receiving groove and is rotatably connected to the fixing plate through a shaft body 2, the second end of the connecting piece is rotatably connected to the threaded sleeve, and the middle part of the connecting piece is movably arranged in the receiving groove; the threaded sleeve can move to a first extreme position and a second extreme position on the screw 1, when the threaded sleeve is at the first extreme position, the fixing plate is in a folded state, and when the threaded sleeve is at the second extreme position, the fixing plate is in an unfolded state.

[0008] Optionally, the second driving mechanism includes a second motor, a fixed rod, a second screw rod and a threaded barrel; the second motor is fixed to the cavity through the fixed rod, the second motor is arranged below the first screw rod, the second screw rod is arranged at the bottom of the second motor and is coaxially fixed with its output end; the threaded barrel is sleeved on the second screw rod and threadedly connected with it, a plurality of limit blocks are arranged at intervals on the circumferential side wall of the threaded barrel, and limit grooves corresponding to the limit blocks are arranged at intervals on the circumferential side wall of the shell, and the limit blocks can be slidably arranged in the limit grooves; the sampling tube is arranged at the bottom of the threaded barrel.

[0009] Optionally, the shell is made of stainless steel.

[0010] Optionally, a handle is provided on the top of the shell.

[0011] Optionally, a perforation is provided on the fixing plate.

[0012] Compared with the prior art, the utility model provides a rock and soil survey sand extractor, which has the following beneficial effects:

[0013] The utility model uses the driving mechanism 1 to make the fixing plate in an unfolded state to fix the shell, and then uses the driving mechanism 2 to control the sampling tube to perform the sampling operation. After the sampling operation is completed, the driving mechanism 1 is operated to restore the fixing plate to the folded state, thereby reducing the occupied area of ​​the fixing plate and making it easier for users to carry.

[0014] The utility model provides a punch hole, and when the fixing plate is in the unfolded state, the user can pass the rope or the pin through the punch hole and drive it into the soil or sand layer, thereby improving the stability of the fixing plate during the fixing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A schematic diagram of the three-dimensional structure of the utility model when the fixing plate is in a folded state is shown;

[0016] Figure 2 A schematic diagram of the three-dimensional structure of the utility model when the fixing plate is in an unfolded state is shown;

[0017] Figure 3 Shows Figure 2 Schematic diagram of the three-dimensional cross-section structure;

[0018] Figure 4 Shows Figure 2 A schematic diagram of a three-dimensional structure after removing the shell;

[0019] Figure 5 Shows Figure 1 Schematic diagram of the three-dimensional structure after removing the shell.

[0020] In the figure: 1. sampling tube; 2. shell; 3. cavity; 4. opening; 5. storage slot; 6. fixing plate; 7. shaft body 1; 8. shaft body 2; 9. motor 1; 10. motor 2; 11. driving mechanism 1; 12. driving mechanism 2; 13. screw rod 1; 14. screw rod 2; 15. threaded sleeve; 16. threaded barrel; 17. receiving slot; 18. connecting piece; 19. fixing rod; 20. limit block; 21. limit slot; 22. handle; 23. punching hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: See Figures 1 to 5According to an embodiment of the utility model, a technical solution is provided: a geotechnical exploration sand sampling device, comprising a sampling tube 1, and also comprising a shell 2, defining a cavity 3 inside, an opening 4 communicating with the cavity 3 is provided at the bottom of the shell 2, and four receiving grooves 5 are provided on the peripheral side wall of the shell 2 at intervals; four fixing plates 6 are respectively arranged in the four receiving grooves 5, and the bottom ends of the fixing plates 6 are rotatably connected to the bottom ends of the receiving grooves 5 through a shaft body 7, and the fixing plates 6 have a folded form or an unfolded form on the shell 2, and the The fixing plate 6 is located in the receiving groove 5 when it is in a folded state, and is perpendicular to the receiving groove 5 when it is in an unfolded state; a driving mechanism 11 is provided in the cavity 3, and is used to drive the fixing plate 6 to rotate along the axis of the shaft 7, so that the fixing plate 6 is in a folded state or an unfolded state on the shell 2; and a sampling tube 1 is provided in the cavity 3 and is located below the driving mechanism 11. A driving mechanism 2 12 is provided in the cavity 3, and the driving mechanism 2 12 is used to drive the sampling tube 1 to move along the height direction of the shell 2.

[0023] The geotechnical survey sand collector adopting the above structure, when the user needs to conduct survey operations, first, align the opening 4 at the bottom of the housing 2 with the surface to be surveyed, and then, through the driving mechanism 11, the four fixed plates 6 are unfolded in the receiving slot 5 of the housing 2 to make the fixed plates 6 in an unfolded state. In this unfolding process, the fixed plates 6 will rotate along their respective shafts 17 until they extend outward from the peripheral side walls of the housing 2 to form a stable support structure to prevent tilting or offset during the sampling process. Then, through the driving mechanism 2 12, the sampling tube 1 is driven to move downward along the height direction of the housing 2, and then penetrate the soil or sand layer, and as the sampling tube 1 goes deeper, it will gradually collect the required soil or sand sample. After completing the sample collection, the driving mechanism 2 12 is used to control the sampling tube 1 to rise in the opposite direction and return to the initial position. At this time, the driving mechanism 11 is operated to rotate the four fixed plates 6 along the shaft 17 back into the receiving slot 5 and return to the folded state, reducing the occupied area of ​​the fixed plates 6 and making it convenient for users to carry.

[0024] In order to store or use the fixing plate 6 to fix the shell 2, in this embodiment, the driving mechanism 11 includes a motor 19, a screw 13 and a threaded sleeve 15; the motor 19 is fixed to the top wall of the cavity 3, the screw 13 is arranged at the bottom of the motor 19 and is coaxially fixed with its output end, and the threaded sleeve 15 is sleeved on the screw 13 and threadedly connected with it; a receiving groove 17 is opened on the fixing plate 6, and a connecting member 18 is provided between the threaded sleeve 15 and the fixing plate 6, the first end of the connecting member 18 is arranged in the receiving groove 17 and is rotatably connected to the fixing plate 6 through the shaft body 8, and the second end of the connecting member 18 is rotatably connected to the threaded sleeve 15, and the connecting member 18 is connected to the screw sleeve 15. The middle part of the member 18 is movably arranged in the receiving groove 5; the threaded sleeve 15 can move to the first limit position and the second limit position on the screw rod 13. When the threaded sleeve 15 is located at the first limit position, the fixed plate 6 is in a folded state, and when the threaded sleeve 15 is located at the second limit position, the fixed plate 6 is in an unfolded state; when the user needs to convert the fixed plate 6 from the folded state to the unfolded state, first, the screw rod 13 is driven to rotate forwardly by the motor 19. In this process, since the connecting member 18 limits the rotation of the threaded sleeve 15, the forward rotation of the screw rod 13 can drive the threaded sleeve 15 to move downward along the axial direction of the screw rod 13. As the threaded sleeve 15 moves, the middle part of the connecting member 18 slides in the receiving groove 5, thereby pushing the fixed plate 6 to rotate around the shaft body 17, so that the fixed plate 6 is gradually unfolded from the receiving groove 5. When the threaded sleeve 15 moves downward to the second limit position, the fixed plate 6 will be in a fully unfolded state. At this time, the connecting member 18 will firmly keep the fixed plate 6 in the unfolded state. On the contrary, when the user needs to convert the fixing plate 6 from the unfolded form back to the folded form, he only needs to perform the reverse operation, that is: use the motor 9 to make the screw rod 13 rotate in the opposite direction, and the threaded sleeve 15 will then move upward along the axial direction of the screw rod 13. As the threaded sleeve 15 moves, the connecting member 18 will pull the fixing plate 6 to rotate in the opposite direction around the shaft body 7, and gradually return to the storage groove 5 until the fixing plate 6 is completely folded.

[0025] In order to drive the sampling tube 1 to move down or up, in this embodiment, the driving mechanism 12 includes a motor 10, a fixing rod 19, a screw rod 14 and a threaded barrel 16; the motor 10 is fixed to the cavity 3 through the fixing rod 19, the motor 10 is arranged below the screw rod 13, the screw rod 14 is arranged at the bottom of the motor 10 and is coaxially fixed with its output end; the threaded barrel 16 is sleeved on the screw rod 14 and is threadedly connected with it, and a plurality of limit blocks 20 are arranged on the peripheral side wall of the threaded barrel 16 at intervals, and limit grooves 21 corresponding to the limit blocks 20 are arranged on the peripheral side wall of the shell 2 at intervals, and the limit blocks 20 are slidably arranged. In the limiting groove 21; the sampling tube 1 is arranged at the bottom of the threaded barrel 16; when the user needs to drive the sampling tube 1 to move downward to collect soil or sand samples, first, the forward rotation of the motor 2 10 drives the synchronous forward rotation of the screw rod 2 14. During the forward rotation of the screw rod 2 14, since the limiting block 20 on the threaded barrel 16 is arranged in the limiting groove 21, the limiting block 20 will limit the rotation of the threaded barrel 16. Therefore, the forward rotation of the screw rod 2 14 will drive the threaded barrel 16 to move downward along the axial direction of the screw rod 2 14. As the threaded barrel 16 moves downward, the sampling tube 1 also moves downward and gradually penetrates the soil or sand layer. Perform sampling operations. On the contrary, when the user needs to raise the sampling tube 1 back to the initial position, only the reverse operation is required, that is, the motor 2 10 is used to make the screw rod 2 14 rotate in the opposite direction to drive the threaded barrel 16 to move upward along the axial direction of the screw rod 2 14, thereby driving the sampling tube 1 to gradually rise.

[0026] In order to increase the service life of the shell 2, in this embodiment, the shell 2 is made of stainless steel; the shell 2 made of stainless steel can effectively resist the erosion of the shell 2 by soil, moisture and possible chemical substances, thereby extending the service life of the shell 2.

[0027] In order to facilitate the user to carry the shell 2, in this embodiment, a handle 22 is provided on the top of the shell 2; the handle 22 provides a gripping point for the user to facilitate the user to carry or transport the shell 2.

[0028] In order to improve the stability of the fixing plate 6 during the fixing operation, in the present embodiment, a punching hole 23 is opened on the fixing plate 6; when the fixing plate 6 is in the expanded state, the user can pass the rope or pin through the punching hole 23 and drive it into the soil or sand layer, thereby improving the stability of the fixing plate 6 during the fixing operation.

[0029] Working principle: When the user needs to conduct surveying, first, align the opening 4 at the bottom of the housing 2 with the surface to be surveyed, and then drive the screw rod 13 to rotate in the positive direction through the motor 19. In this process, since the connection 18 limits the rotation of the threaded sleeve 15, the positive rotation of the screw rod 13 can drive the threaded sleeve 15 to move downward along the axial direction of the screw rod 13. As the threaded sleeve 15 moves, the middle part of the connection 18 slides in the receiving groove 5, and then drives the fixed plate 6 to rotate around the shaft body 17, so that the fixed plate 6 gradually unfolds from the receiving groove 5. When the threaded sleeve 15 moves downward to the second extreme position, the fixed plate 6 will be in a fully unfolded state. At this time, the connection 18 will firmly keep the fixed plate 6 in the unfolded state, forming a stable support structure to prevent tilting or offset during the sampling process. Next, the forward rotation of the motor 2 10 drives the screw rod 2 14 to rotate forward synchronously. During the forward rotation of the screw rod 2 14 , since the limit block 20 on the threaded barrel 16 is set in the limit groove 21 , the limit block 20 will limit the rotation of the threaded barrel 16 . Therefore, the forward rotation of the screw rod 2 14 will drive the threaded barrel 16 to move downward along the axial direction of the screw rod 2 14 . As the threaded barrel 16 moves downward, the sampling tube 1 also moves downward and gradually penetrates the soil or sand layer to perform sampling operations. After completing the sample collection, the motor 2 10 is used to make the screw rod 2 14 rotate in the opposite direction to drive the threaded barrel 16 to move upward along the axial direction of the screw rod 2 14, thereby driving the sampling tube 1 to gradually rise and return to the initial position. At this time, the motor 1 9 is used to make the screw rod 13 rotate in the opposite direction, and the threaded sleeve 15 immediately moves upward along the axial direction of the screw rod 13. As the threaded sleeve 15 moves, the connecting piece 18 will pull the fixing plate 6 to rotate in the opposite direction around the shaft body 1 7 and gradually return to the storage groove 5 until the fixing plate 6 is completely folded and restored to the folded state, thereby reducing the occupied area of ​​the fixing plate 6 and facilitating the user. Carrying; In order to increase the service life of the shell 2, the shell 2 made of stainless steel can effectively resist the erosion of the shell 2 by soil, moisture and possible chemical substances, thereby extending the service life of the shell 2; In order to facilitate the user to lift the shell 2, the handle 22 provides the user with a gripping point, which is convenient for the user to carry or transport the shell 2; In order to improve the stability of the fixing plate 6 during the fixing operation, when the fixing plate 6 is in the unfolded state, the user can pass the rope or pin through the punch hole 23 and drive it into the soil or sand layer, thereby improving the stability of the fixing plate 6 during the fixing operation.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rock and soil exploration sand sampling device, comprising a sampling tube (1), characterized in that: Also includes: A shell (2) defines a cavity (3) inside, an opening (4) communicating with the cavity (3) is provided at the bottom of the shell (2), and four receiving grooves (5) are provided at intervals on the peripheral side wall of the shell (2); Four fixing plates (6) are respectively arranged in the four receiving grooves (5); the bottom ends of the fixing plates (6) are rotatably connected to the bottom ends of the receiving grooves (5) via a shaft (7); the fixing plates (6) have a folded form or an unfolded form on the housing (2); when the fixing plates (6) are in the folded form, they are located in the receiving grooves (5); when the fixing plates (6) are in the unfolded form, they are perpendicular to the receiving grooves (5); a driving mechanism (11) disposed in the cavity (3) and used for driving the fixing plate (6) to rotate along the axis of the shaft (7) so that the fixing plate (6) is in a folded state or an unfolded state on the housing (2); and a sampling tube (1), which is arranged in the cavity (3) and is located below the first driving mechanism (11); a second driving mechanism (12) is arranged in the cavity (3); the second driving mechanism (12) is used to drive the sampling tube (1) to move along the height direction of the shell (2).

2. A rock and soil exploration sand sampling device according to claim 1, characterized in that: The driving mechanism 1 (11) comprises a motor 1 (9), a screw rod 1 (13) and a threaded sleeve (15); The motor 1 (9) is fixed to the top wall of the cavity (3), the screw rod 1 (13) is arranged at the bottom of the motor 1 (9) and is coaxially fixed with the output end thereof, and the threaded sleeve (15) is sleeved on the screw rod 1 (13) and is threadedly connected thereto; The fixing plate (6) is provided with a receiving groove (17), a connecting member (18) is provided between the threaded sleeve (15) and the fixing plate (6), a first end of the connecting member (18) is provided in the receiving groove (17) and is rotatably connected to the fixing plate (6) via a second shaft (8), a second end of the connecting member (18) is rotatably connected to the threaded sleeve (15), and a middle portion of the connecting member (18) is movably provided in the receiving groove (5); The threaded sleeve (15) is movable on the screw rod (13) to a first extreme position and a second extreme position; when the threaded sleeve (15) is located at the first extreme position, the fixing plate (6) is in a folded state; and when the threaded sleeve (15) is located at the second extreme position, the fixing plate (6) is in an unfolded state.

3. A rock and soil exploration sand sampling device according to claim 2, characterized in that: The second driving mechanism (12) comprises a second motor (10), a fixing rod (19), a second screw rod (14) and a threaded cylinder (16); The second motor (10) is fixed to the cavity (3) via the fixing rod (19); the second motor (10) is arranged below the first screw rod (13); the second screw rod (14) is arranged at the bottom of the second motor (10) and is coaxially fixed with its output end; The threaded barrel (16) is sleeved on the second screw rod (14) and is threadedly connected thereto; a plurality of limit blocks (20) are arranged at intervals on the peripheral side wall of the threaded barrel (16); limit grooves (21) corresponding to the limit blocks (20) are arranged at intervals on the peripheral side wall of the housing (2); and the limit blocks (20) are slidably arranged in the limit grooves (21); The sampling tube (1) is arranged at the bottom of the threaded cylinder (16).

4. A rock and soil exploration sand sampling device according to claim 1, characterized in that: The housing (2) is made of stainless steel.

5. The rock and soil survey sand sampling device according to claim 1, characterized in that: A handle (22) is provided on the top of the shell (2).

6. A rock and soil survey sand sampling device according to claim 1, characterized in that: The fixing plate (6) is provided with a punching hole (23).

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