Sand sampler for geotechnical investigation

Abstract

The utility model discloses a geotechnical investigation sand sampler which comprises a hollow drill rod used for penetrating into a sand layer. The sand taking assembly is arranged at the bottom end of the drill rod and communicates with the drill rod, the sand taking assembly comprises a mounting table, a plurality of sampling parts are arranged in the mounting table in a transverse sliding mode, and the corresponding sampling parts can slide out of the mounting table and are used for scraping samples on the hole wall and storing the samples; the two ends of the spring are in contact with the mounting table and the sampling component respectively, and the spring is used for resetting the sampling component after sand taking; the driving assembly is rotatably arranged in the drill rod and the mounting table and is used for driving the corresponding sampling component to slide out of the mounting table. According to the sand sampling device, sand materials with different heights can be sampled independently, and different samples cannot be mixed with one another, so that the sand sampling device has relatively good sampling precision and sampling efficiency.

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 collecting device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Geotechnical engineering investigation is the activity of identifying, analyzing, and evaluating the geological, environmental characteristics, and geotechnical conditions of a construction site, and compiling investigation documents, based on the requirements of a construction project. During the investigation process, it is often necessary to sample the corresponding sand and soil layers. Sand sampling during geotechnical investigations is important because sand sample analysis can provide key information about the physical and mechanical properties of sand and soil, thereby determining physical properties such as particle size distribution, density, and water content, and evaluating mechanical properties such as shear strength, compression modulus, and bearing capacity, thereby ensuring the quality and safety of the project. Existing sand extractors typically use drilling equipment with spiral blades to first drill holes in the corresponding locations, and then use the spiral blades to extract and collect the excavated sand to complete sampling. However, this sampling method has the following shortcomings: 1. The spiral blades cause the sampled sand to mix and be discharged, affecting the accuracy of sand extraction; 2. It is difficult to separately sample and preserve sand from multiple heights in a single drilling, thus affecting sampling efficiency. Utility Model Content

[0004] The purpose of the present invention is to provide a rock and soil survey sand collecting device to address the above-mentioned shortcomings, so as to achieve better sand collecting accuracy and efficiency.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a rock and soil survey sand collecting device, comprising:

[0006] A hollow drill pipe used to penetrate deep into sand layers;

[0007] A sand collection assembly is provided at the bottom end of the drill pipe and is in communication therewith. The sand collection assembly includes a mounting platform, wherein a plurality of sampling components are provided on the mounting platform so as to be slidable laterally. The sampling components can be slid out of the mounting platform to scrape and store samples on the hole wall.

[0008] A spring, two ends of which are in contact with the mounting platform and the sampling component respectively, and the spring is used to reset the sampling component after sand is taken;

[0009] The driving assembly is rotatably arranged in the drill rod and the mounting platform, and is used for driving the corresponding sampling component to slide out of the mounting platform.

[0010] Furthermore, the mounting platform includes a shell arranged at the bottom end of the drill rod, and a conical vertebral body is provided at the bottom of the shell. The sampling components are distributed in a ring shape in the shell, and a plurality of sampling slots are provided on the side wall of the shell for the corresponding sampling components to slide out of the shell. A closing frame is also provided in the shell, and the closing frame is used to seal the sampling points of the sampling components located in the shell.

[0011] Furthermore, the sampling component includes a trapezoidal sampling container, the interior of the sampling container is hollow, a sampling port is provided on the side wall of the sampling container corresponding to the rotation direction of the drill rod, the sampling port is communicated with the interior of the sampling container, a connecting plate is provided on the sampling container, and the spring is connected to the connecting plate;

[0012] The sampling container is provided with an extrusion groove, and the sampling container has an inclined surface at the corresponding extrusion groove. The driving component rotates to extend into the corresponding extrusion groove of the sampling container and squeeze the inclined surface to make the sampling container slide out of the shell.

[0013] Furthermore, the drive assembly includes a rotatable adjusting rod arranged in the drill rod and the mounting platform, and an extrusion rod flush with the height of the extrusion groove is horizontally arranged on the adjusting rod. Rotating the adjusting rod can make the extrusion rod rotate synchronously and enter the corresponding extrusion groove.

[0014] Furthermore, it also includes a control motor, the rotating shaft of the control motor is connected to the end of the adjustment rod away from the mounting platform, and the control motor is used to drive the adjustment rod to rotate.

[0015] The beneficial effects of the present invention are as follows:

[0016] In the utility model, the drill rod is controlled to descend to the height required for sampling, and then the driving assembly is driven to rotate until the corresponding sampling component is extended from the mounting platform. At this time, the sampling component contacts the hole wall. As the drill rod continues to rotate, the sampling component will scrape off the sand material at the corresponding height on the hole wall, and the sample will enter the sampling component for temporary storage. After the sampling is completed, the driving assembly is controlled to rotate again and separate from the sampling component. The sampling component will move to the mounting platform and reset under the pressure of the spring. Since multiple sampling components are provided, when it is necessary to sample sand material at other heights, the driving assembly can continue to be controlled to rotate after the drill rod reaches the corresponding height, so that another sampling component without the sample is extended and sampled. This method can sample sand material at different heights separately without mixing different samples, thereby having better sampling accuracy and sampling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional view of the utility model;

[0018] Figure 2This is a cross-sectional view of the structure of the sand taking component in the utility model;

[0019] Figure 3 This is a schematic diagram of the assembly of the mounting platform and the drive assembly in the present invention;

[0020] Figure 4 It is a partial cross-sectional view of the sampling component in the utility model;

[0021] Figure 5 For this utility model Figure 1 A partial view of A is shown.

[0022] In the picture:

[0023] 1. Drill rod; 2. Mounting platform; 21. Housing; 22. Cone; 23. Sampling slot; 24. Closing frame;

[0024] 3. Sampling component; 31. Sampling container; 32. Extrusion groove; 33. Sampling port; 34. Connecting plate; 4. Spring; 5. Drive assembly; 51. Adjustment rod; 52. Extrusion rod; 6. Control motor. DETAILED DESCRIPTION

[0025] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The utility model discloses a rock and soil exploration sand extractor, comprising a drill rod 1 with a hollow interior, which is used to penetrate into the sand layer. The outer wall of the drill rod 1 has spiral blades. When in use, the drill rod 1 needs to be used in conjunction with a rotating device and a lifting device. The rotating device can be a motor device, which is used to drive the drill rod 1 to rotate, and the lifting device can be a hydraulic platform, which is used to drive the drill rod 1 to rise and fall. In this way, the rotating and continuously descending drill rod 1 can penetrate into different heights of the sand layer. The above structures are all common knowledge in the field, so the specific structural composition and working principle are not described in detail in this article.

[0027] In one embodiment, a sand collection component is provided at the bottom end of the drill rod 1 and is interconnected therewith. The sand collection component includes a mounting platform 2. A plurality of sampling components 3 are provided in the mounting platform 2 so as to slide laterally. The corresponding sampling components 3 can slide to the outside of the mounting platform 2 for scraping samples on the hole wall and preserving them. A spring 4 is provided in the mounting platform 2. The two ends of the spring 4 are in contact with the inner wall of the mounting platform 2 and the sampling component 3 respectively, and are used to reset the sampling component 3 after sand collection. A driving component 5 is rotatably provided in the drill rod 1 and the mounting platform 2. The driving component 5 is used to drive the corresponding sampling component 3 to slide to the outside of the mounting platform 2.

[0028] After the drill rod 1 has been lowered to the required height for sampling, the driving assembly 5 is driven to rotate until the corresponding sampling component 3 is extended from the mounting platform 2. At this time, the sampling component 3 contacts the hole wall. As the drill rod 1 continues to rotate, the sampling component 3 will scrape off the sand material at the corresponding height on the hole wall, and the sample will enter the sampling component 3 for temporary storage. After the sampling is completed, the driving assembly 5 is controlled to rotate again and separate from the sampling component 3. The sampling component 3 will move to the mounting platform 2 and reset under the pressure of the spring 4. Since there are multiple sampling components 3, when it is necessary to sample sand material at other heights, the driving assembly 5 is continued to be controlled to rotate after the drill rod 1 reaches the corresponding height, so that another sampling component 3 without the sample is extended and sampled. This method can sample sand material at different heights separately without mixing different samples, thereby having better sampling accuracy and sampling efficiency.

[0029] In one embodiment, the mounting platform 2 includes a shell 21 mounted on the bottom end of the drill rod 1. A conical vertebral body 22 is installed at the bottom of the shell 21. The sampling components 3 are distributed in a ring shape in the shell 21. A plurality of sampling slots 23 are provided on the side wall of the shell 21 for the corresponding sampling components 3 to slide out of the shell 21. A closing frame 24 is also provided in the shell 21.

[0030] In specific implementation, the setting of the cone 22 enables the device to penetrate into the sand layer more easily, and the sampling component 3 located in the shell 21 and containing samples will be blocked by the sealing frame 24 at the sampling position, so the sample stored in the sampling component 3 will not spill out when the device is in use.

[0031] In one embodiment, the sampling component 3 includes a trapezoidal sampling container 31, which can be installed in the shell 21 in a transversely slidable manner. The interior of the sampling container 31 is hollow, and the hollow space can store sand samples. A sampling port 33 is provided on the side wall of the sampling container 31 corresponding to the rotation direction of the drill rod 1. The sampling port 33 is connected to the interior of the sampling container 31, and the sampling port 33 enables the sample to enter the sampling container 31 from there. A connecting plate 34 is provided on the sampling container 31, and the spring 4 is connected to the connecting plate 34.

[0032] Furthermore, an inclined baffle is installed on the lower side of the corresponding sampling port 33 of the sampling container 31, and the inclined baffle can prevent the sample inside the sampling container 31 from spilling out easily. The bottom wall of the sampling container 31 has an opening, and the opening is detachably installed with a cover (not shown in the figure). After opening the cover, the sample in the corresponding sampling container 31 can be discharged.

[0033] In one embodiment, an extrusion groove 32 is provided on the sampling container 31 , and the sampling container 31 has an inclined surface corresponding to the extrusion groove 32 . The driving component 5 rotates to extend into the extrusion groove 32 corresponding to the sampling container 31 and squeeze the inclined surface to make the sampling container 31 slide out of the shell 21 .

[0034] In a specific implementation, the driving component 5 in the initial state does not contact each driving component 5. When the driving component 5 starts and rotates, it will move into the extrusion groove 32 on the corresponding sampling container 31. As the rotation continues, the driving component 5 will resist the inclined surface of the sampling container 31, causing the sampling container 31 to move toward the outside of the shell 21, so that the sampling container 31 can contact the hole wall and scrape off the sand layer.

[0035] In one embodiment, the driving assembly 5 includes an adjusting rod 51 rotatably mounted between the drill rod 1 and the mounting platform 2 , and an extrusion rod 52 is laterally mounted on the adjusting rod 51 and flush with the extrusion groove 32 .

[0036] When in use, the adjusting rod 51 is rotated to make the extrusion rod 52 rotate synchronously and enter the corresponding extrusion groove 32 .

[0037] In one embodiment, the device further includes a control motor 6 , the rotation shaft of the control motor 6 is connected to the end of the adjustment rod 51 away from the mounting platform 2 , and the control motor 6 is used to drive the adjustment rod 51 to rotate.

[0038] Furthermore, in actual circumstances, a fixed platform is installed on the top of the drill rod 1, and a connecting platform (not shown in the figure) is rotatably installed on the outside of the fixed platform, wherein the control motor 6 is fixed on the fixed platform, and the rotating device used to drive the drill rod 1 to rotate drives the fixed platform to rotate, and the drill rod 1 will rotate together with the fixed platform. The lifting end of the lifting device is connected to the connecting platform, and when it moves, it causes the connecting platform to rise and fall and drives the fixed platform and the drill rod 1 to rise and fall together, so that each power device can work independently and will not affect each other.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0041] In addition, "plurality" means two or more.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rock and soil exploration sand collecting device, characterized in that: include: A drill rod (1) having a hollow interior, which is used to penetrate deep into the sand layer; A sand collection assembly is provided at the bottom end of the drill rod (1) and is in communication therewith, the sand collection assembly comprising a mounting platform (2), a plurality of sampling components (3) being arranged in a transversely slidable manner in the mounting platform (2), and the corresponding sampling components (3) being capable of sliding out of the mounting platform (2) to scrape and store samples on the hole wall; A spring (4), both ends of which are in contact with the mounting platform (2) and the sampling component (3), respectively, and the spring (4) is used to reset the sampling component (3) after sand is taken; A driving assembly (5) is rotatably arranged in the drill rod (1) and the mounting platform (2) and is used to drive the corresponding sampling component (3) to slide outside the mounting platform (2).

2. The rock and soil exploration sand sampling device according to claim 1, characterized in that: The mounting platform (2) comprises a shell (21) arranged at the bottom end of the drill rod (1); a conical vertebral body (22) is provided at the bottom of the shell (21); the sampling components (3) are distributed in an annular shape in the shell (21); a plurality of sampling slots (23) are provided on the side wall of the shell (21) for the corresponding sampling components (3) to slide out of the shell (21); a closing frame (24) is also provided in the shell (21); the closing frame (24) is used to seal the sampling position of the sampling components (3) located in the shell (21).

3. The rock and soil exploration sand sampling device according to claim 2, characterized in that: The sampling component (3) comprises a trapezoidal sampling container (31), the interior of the sampling container (31) is hollow, a sampling port (33) is provided on the side wall of the sampling container (31) corresponding to the rotation direction of the drill rod (1), the sampling port (33) is communicated with the interior of the sampling container (31), a connecting plate (34) is provided on the sampling container (31), and the spring (4) is connected to the connecting plate (34); The sampling container (31) is provided with an extrusion groove (32), and the sampling container (31) has an inclined surface at the corresponding extrusion groove (32). The driving component (5) can be rotated to extend into the corresponding extrusion groove (32) of the sampling container (31) and squeeze the inclined surface to slide the sampling container (31) out of the housing (21).

4. The rock and soil exploration sand sampling device according to claim 3, characterized in that: The driving assembly (5) comprises an adjusting rod (51) rotatably arranged in the drill rod (1) and the mounting platform (2); an extrusion rod (52) is laterally arranged on the adjusting rod (51) and is flush with the height of the extrusion groove (32); and rotating the adjusting rod (51) can cause the extrusion rod (52) to rotate synchronously and enter the corresponding extrusion groove (32).

5. The rock and soil exploration sand sampling device according to claim 4, characterized in that: It also includes a control motor (6), the rotation shaft of which is connected to one end of the adjustment rod (51) away from the mounting platform (2), and the control motor (6) is used to drive the adjustment rod (51) to rotate.

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