In-situ cutting ring sampler
By using the assembly structure of square outer teeth and square inner teeth in the in-situ ring knife sampler, the problems of poor structural stability and sample disturbance in the prior art are solved, and higher structural stability and application flexibility are achieved, reducing the risk of sample damage.
Patent Information
- Application Number
- CN202421840397.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-31
AI Technical Summary
During the processing process, the existing in-situ ring knife samplers have poor connection between the samples and the drilling rig, the ring knife cannot enter the consolidation instrument, the ring knife and ring knife are unqualified, and the central shaft screw is prone to fall off. The structural stability is poor, and it is easy to cause disturbance to the sand and soil during application, and even the sample is shattered.
The assembly structure of square outer teeth and square inner teeth is adopted, so that each component can be easily connected and disassembled, improves modular characteristics, and simplifies the maintenance and replacement process. At the same time, instead of traditional triangular teeth through square teeth connection, the contact surface is increased, the strength of the silk teeth is improved, and the protective effect is provided to reduce sample disturbances under the cooperation between the sample box lid and the sampling cylinder.
Improve the structural stability and connection tightness of the sampler, reduce the risk of sample disturbance and collapse, enhance the application flexibility and service life of the sampler, and simplify the maintenance and replacement process.
Smart Images
Figure CN222979120U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of geological exploration, and particularly to an in-situ core sampler. Background Art
[0002] Indoor shear test is one of the important means to obtain the mechanical properties of sand and soil layers in current geological exploration. The sampling method is completed through multiple processes such as drilling, sampling, removing the sample from the sampler, encapsulating with a single-slit open sample box cover, sealing with sealant and wax, storage and transportation, indoor sample removal, cutting, sample preparation, and shearing on the machine.
[0003] During the processing of the existing in-situ core sampler, the core, sample cylinder, sampler, and gasket produced by different manufacturers are often assembled together to obtain a combined structure. However, due to the inconsistent processing standards of each manufacturer, problems such as poor connection between the sample and the drill rig, or the core being unable to enter the consolidometer, the core being stuck or unqualified, and the central shaft screw being easily detached may occur. Subsequently, the structural stability of the in-situ core sampler is poor, and it is easy to cause disturbance to the sandy soil during application, and even cause the sample to collapse. Summary of the Invention
[0004] In order to provide a more standard connection structure to enable stable assembly of each structure in the in-situ core sampler, this application provides an in-situ core sampler.
[0005] The in-situ core sampler provided by this application adopts the following technical solutions:
[0006] The in-situ core sampler includes a waste soil bin, a cutting knife, and a sampling cylinder. Among them, square external threads are respectively provided at the outer ends of both ends of the sampling cylinder, and square internal threads are respectively provided at the end of the cutting knife close to the sampling cylinder and the end of the waste soil bin close to the sampling cylinder. The square external thread at one end of the sampling cylinder is assembled with the square internal thread of the cutting knife, and the square external thread at the other end of the sampling cylinder is assembled with the square internal thread of the waste soil bin;
[0007] Alternatively, it further includes a sample box cover. A gasket is provided in the inner cavity of the sample box cover, and square internal threads are provided on the inner side wall of the sample box cover. Take two sample box covers and assemble them with both ends of the sampling cylinder respectively.
[0008] By adopting the above technical solution, through the assembly of external square teeth and internal square teeth, each component can be conveniently connected and disassembled, endowing the sampler with a highly modular characteristic, facilitating transportation and storage, simplifying the process of maintenance and component replacement. In addition, both ends of the sampling cylinder can be assembled with different components, such as cutting knives, waste soil bins or sample box lids, enabling the sampler to be quickly configured according to different sampling requirements, providing application flexibility for the in-situ ring knife sampler. Compared with the prior art, in this application, the square tooth connection replaces the traditional triangular tooth, increasing the contact surface without thread slipping, enhancing the strength of the thread teeth. Meanwhile, the setting of the sealing gasket can further make the connection tight and highly stable, helping to solve the problem of poor connection between structures. Moreover, when the in-situ ring knife sampler is not used for sampling, under the cooperation of the sample box lid and the sampling cylinder, it can provide a protective effect on the sandy soil sample, reducing sample disturbance.
[0009] Preferably, it includes a plurality of ring knives, and the plurality of ring knives are stacked in sequence in the sampling cylinder.
[0010] By adopting the above technical solution, by stacking a plurality of ring knives, multiple samples can be obtained in one sampling process, thus greatly improving the sampling efficiency. Moreover, each ring knife can independently collect and preserve samples to avoid cross-contamination between different samples. At the same time, since the ring knives are stacked in the sampling cylinder, it helps to protect the samples from external environmental interference and damage. The samples collected using the ring knives can be directly used for laboratory analysis without additional sample processing steps.
[0011] Preferably, the cutting knife includes a connecting part and a blade. The connecting part is fixed at one end of the blade and is assembled with the sampling cylinder. An edge is provided at one end of the blade away from the connecting part, and the inclined surface of the edge is inclined downward from the outside to the center line of the cutting knife.
[0012] By adopting the above technical solution, the connecting part provides support for the blade. The inclined surface design of the edge makes the cutting knife cut the soil more smoothly, helping to improve the sampling efficiency. The assembly method of the connecting part and the sampling cylinder enhances the structural stability of the entire sampler to ensure stability and safety during the sampling process.
[0013] Preferably, the blade is inclined outward at an angle of 20° or 30°.
[0014] By adopting the above technical solution, the outward inclination angle of 20° or 30° enables the blade to better adapt to the soil structure during cutting, reducing resistance, thereby improving the cutting efficiency. By optimizing the angle of the blade, it helps to reduce the energy consumption during the cutting process, making the sampler more labor-saving during use.
[0015] Preferably, it includes a drill pipe. When one end of the waste soil bin is connected to the sampling cylinder, the other end is assembled with the core barrel of the drill pipe.
[0016] By adopting the above technical solution, through the connection with the drill pipe, the sampler can not only perform surface sampling but also deep soil sampling, greatly expanding its scope of use. Moreover, it provides an operating space for the user, facilitating gripping. And the core barrel can guide the drill to protect the core from damage and reduce disturbance.
[0017] Preferably, the waste soil bin, the cutting knife, and the sampling cylinder are all steel structures.
[0018] By adopting the above technical solution, the steel structure has high strength and durability, can withstand various stresses during the sampling process, ensure the service life of the sampler, and is also easy to clean and maintain, helping to reduce the maintenance cost of the structure.
[0019] Preferably, an anti-rust protective film is provided on the outer walls of the waste soil bin, the cutting knife, and the sampling cylinder.
[0020] By adopting the above technical solution, the anti-rust protective film can effectively reduce the rusting of the steel structure in a humid or corrosive environment, so as to achieve the purpose of extending the service life of the sampler.
[0021] In summary, the present application includes at least one of the following beneficial technical effects:
[0022] 1. Compared with the prior art, by replacing the traditional triangular thread with a square thread connection in the present application, the contact surface is increased without slipping of the thread, the strength of the thread is improved, which helps to solve the problem of poor connection between structures, making the connection tight and highly stable. In addition, when the in-situ core cutter sampler is not used for sampling, under the cooperation of the sample box cover and the sampling cylinder, it can provide a protective effect on the sandy soil sample and reduce sample disturbance;
[0023] 2. The 20° or 30° outer inclination angle enables the cutting edge to better adapt to the soil structure during cutting, reduces resistance, thereby improving the cutting efficiency. By optimizing the angle of the cutting edge, it helps to reduce the energy consumption during the cutting process and makes the sampler more labor-saving during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the cooperation of the waste soil bin, the sampling cylinder, and the cutting knife in the embodiment of the present application.
[0025] Figure 2 It is a schematic diagram of the cooperation of the sampling cylinder and the sample box cover in the embodiment of the present application.
[0026] Figure 3 It is a schematic diagram of the structure of the sampling cylinder in the embodiment of the present application.
[0027] Figure 4 It is a schematic structural diagram of the cutting tool in the embodiment of the present application.
[0028] Figure 5 It is a schematic structural diagram of the waste soil bin in the embodiment of the present application.
[0029] Figure 6 It is a schematic structural diagram of the ring cutter in the embodiment of the present application.
[0030] Figure 7 It is a schematic structural diagram of the sample box cover in the embodiment of the present application.
[0031] Explanation of reference numerals: 1, waste soil bin; 2, cutting tool; 21, connecting part; 22, cutting edge; 3, sampling cylinder; 41, external square thread; 42, internal square thread; 43, sealing gasket; 5, sample box cover; 6, ring cutter. Specific implementation manners
[0032] The following will Figures 1-7 . make a further detailed description of the present application.
[0033] The embodiment of the present application discloses an in-situ ring cutter sampler.
[0034] Referring to Figure 1 and Figure 2 , the in-situ ring cutter sampler includes a waste soil bin 1, a cutting tool 2, and a sampling cylinder 3. Among them, the waste soil bin 1, the cutting tool 2, and the sampling cylinder 3 are all steel structures, so that they have high strength and durability, can withstand various stresses during the sampling process, and reduce the occurrence of deformation. Moreover, the in-situ ring cutter sampler of the present application is applied in the scenario of soil sampling. Antirust protective films are provided on the outer walls of the waste soil bin 1, the cutting tool 2, and the sampling cylinder 3. During the spraying process of the antirust protective film, blackening antirust treatment is performed on the structure, and then a layer of magnetite protective film is formed on the steel surface, which can effectively reduce the rusting of the steel structure in a humid or corrosive environment, so as to achieve the purpose of extending the service life of the sampler. At the same time, it is also easy to clean and maintain, which helps to reduce the maintenance cost of the structure.
[0035] Referring to Figures 3 to 5 , external square threads 41 are respectively provided at both outer ends of the sampling cylinder 3, and internal square threads 42 are respectively provided at the end of the cutting tool 2 close to the sampling cylinder 3 and the end of the waste soil bin 1 close to the sampling cylinder 3. When sampling the soil with the in-situ ring cutter sampler, the external square thread 41 at one end of the sampling cylinder 3 is assembled with the internal square thread 42 of the cutting tool 2, and the external square thread 41 at the other end of the sampling cylinder 3 is assembled with the internal square thread 42 of the waste soil bin 1; when storing the soil sample through the sampling cylinder 3 after sampling, the in-situ ring cutter sampler further includes a plurality of ring cutters 6 and two sample box covers 5 (refer to Figure 6 and Figure 7),(so that multiple core cutters 6 are stacked in the sampling cylinder 3 in sequence. A sealing gasket 43 is arranged in the inner cavity of the sample box cover 5, and a square internal thread 42 is arranged on the inner side wall of the sample box cover 5. Take two sample box covers 5 and respectively assemble them with both ends of the sampling cylinder 3.)
[0036] In this application, whether it is the square internal thread 42 or the square external thread 41, the tolerance of the square thread does not exceed plus or minus 0.1 mm. Through high-precision machining, the square external thread 41 and the square internal thread 42 can be assembled with high precision, enabling each component to be conveniently connected and disassembled, making the sampler highly modular, facilitating transportation and storage, and simplifying the process of maintenance and component replacement. In this application, both ends of the sampling cylinder 3 can be assembled with different components, such as the cutting knife 2, the waste soil bin 1 or the sample box cover 5, enabling the sampler to be quickly configured according to different sampling requirements, providing application flexibility for the in-situ core cutter sampler. Compared with the prior art, in this application, the square thread connection is used instead of the traditional triangular thread, increasing the contact surface without the occurrence of thread slipping, improving the strength of the thread. At the same time, the setting of the sealing gasket 43 can further make the connection tight and highly stable, helping to solve the problem of poor connection between structures, making the connection tight and highly stable. In addition, when the in-situ core cutter sampler is not used for sampling, under the cooperation of the sample box cover 5 and the sampling cylinder 3, it can provide a protective effect on the sandy soil sample, reducing sample disturbance.)
[0037] By stacking multiple core cutters 6, multiple samples can be obtained in one sampling process, thus greatly improving the sampling efficiency. Moreover, each core cutter 6 can independently collect and store samples to avoid cross-contamination between different samples. At the same time, since the core cutters 6 are stacked in the sampling cylinder 3, it helps to protect the samples from external environmental interference and damage. The samples collected using the core cutters 6 can be directly used for laboratory analysis without additional sample processing steps.)
[0038] Further, referring to Figure 4 , the cutting knife 2 includes a connecting portion 21 and a blade 22. The connecting portion 21 is fixed at one end of the blade 22 and assembled with the sampling cylinder 3. An edge is provided at one end of the blade 22 away from the connecting portion 21. The inclined surface of the edge is inclined downward from the outside to the center line of the cutting knife 2. The blade 22 is inclined outward at an angle of 20° or 30°, enabling the blade 22 to better adapt to the soil structure during cutting, reducing resistance, thereby improving the cutting efficiency. By optimizing the angle of the blade 22, it helps to reduce the energy consumption during the cutting process, making the sampler more labor-saving when in use. The connecting portion 21 provides support for the blade 22, and the assembly method of the connecting portion 21 and the sampling cylinder 3 enhances the structural stability of the entire sampler to ensure the stability and safety during the sampling process.)
[0039] In the present application, in specific applications, under the action of static pressure or impact force, the cutter 2 is used to cut the soil from the soil layer. The cutting of the soil does not generate vertical and radial compression, and a compression stroke space is generated for the soil outside the cutter 2 under the action of the vertical force.
[0040] In addition, the in-situ core sampler further includes a drill rod. When one end of the waste soil bin 1 is connected to the sampling cylinder 3, the other end is assembled with the core tube of the drill rod. Through the connection with the drill rod, the sampler can not only perform surface sampling, but also perform deep soil sampling, greatly expanding its scope of use. Moreover, it provides an operating space for the user and is convenient for holding. And the core tube can guide the drill to protect the core from damage and reduce disturbance.
[0041] The above are all preferred embodiments of the present application. This embodiment is only an explanation of the present application and does not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.
Claims
1. In-situ ring knife sampler, characterized in that: It comprises a waste soil bin (1), a cutting knife (2) and a sampling tube (3), wherein both ends of the sampling tube (3) are respectively provided with square external teeth (41), and the end of the cutting knife (2) close to the sampling tube (3) and the end of the waste soil bin (1) close to the sampling tube (3) are respectively provided with square internal teeth (42), the square external teeth (41) at one end of the sampling tube (3) are assembled with the square internal teeth (42) of the cutting knife (2), and the square external teeth (41) at the other end of the sampling tube (3) are assembled with the square internal teeth (42) of the waste soil bin (1); Alternatively, it further comprises a sample box cover (5), the inner cavity of the sample box cover (5) being provided with a sealing gasket (43), the inner side wall of the sample box cover (5) being provided with square inner teeth (42), and two sample box covers (5) being taken and respectively assembled with the two ends of the sampling cylinder (3).
2. The in-situ ring knife sampler according to claim 1, characterized in that: It comprises a plurality of ring knives (6), wherein the plurality of ring knives (6) are stacked in sequence in the sampling cylinder (3).
3. The in-situ ring knife sampler according to claim 1, characterized in that: The cutting knife (2) comprises a connecting portion (21) and a blade (22), wherein the connecting portion (21) is fixed to one end of the blade (22) and assembled with the sampling tube (3), and an edge is formed at one end of the blade (22) away from the connecting portion (21), wherein the inclined surface of the edge is inclined downward from the outside to the center line of the cutting knife (2).
4. The in-situ ring knife sampler according to claim 3, characterized in that: The blade (22) is arranged to be inclined outwardly at an angle of 20° or 30°.
5. The in-situ ring knife sampler according to claim 1, characterized in that: It comprises a drill rod, wherein when one end of the waste soil bin (1) is connected to the sampling tube (3), the other end is assembled with the core tube of the drill rod.
6. The in-situ knife ring sampler according to any one of claims 1 to 5, characterized in that: The waste soil bin (1), the cutting knife (2) and the sampling tube (3) are all steel structures.
7. The in-situ knife ring sampler according to any one of claims 1 to 5, characterized in that: The outer walls of the waste soil bin (1), the cutting knife (2) and the sampling tube (3) are all provided with an anti-rust protective film.