High-altitude frozen soil sample collecting device

Abstract

The invention discloses a high-altitude frozen soil sample collection device, and relates to the technical field of frozen soil sample collection, the high-altitude frozen soil sample collection device comprises a support rod, a support base fixedly connected to one end of the support rod, and a motor fixedly connected to the other end of the support rod; the drilling and digging sampling structure comprises a rotating shaft with one end fixedly connected to the motor, an outer drilling barrel fixedly connected to the rotating shaft, an outer drilling cone fixedly connected to the outer drilling barrel and a drilling assembly fixedly connected to the surface of the outer drilling cone. The spiral saws with different sizes are arranged in the drilling and digging structure, so that soil particles with different characteristics in frozen soil can be effectively treated, drilling resistance change caused by particle cohesiveness difference is avoided, and the continuity of a collection process and the integrity of a sample are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of frozen soil sample collection, in particular to a frozen soil sample collection device for high altitudes. BACKGROUND

[0002] The frozen soil sample collection device for high altitudes is a device specially designed for collecting frozen soil samples in high-altitude and cold environments.

[0003] In use, the collection device is first safely transported to the sampling site. Upon arrival, the installation angle and height of the device are adjusted according to the actual terrain and the depth of the frozen soil layer to ensure the stability of the device. Then the power system is started and the drilling component is controlled to start drilling into the frozen soil layer. At this time, the operator should pay attention to drilling parameters such as rotation speed and feed speed to adapt to frozen soil layers of different hardness and thickness, prevent the device from being overloaded or the sample from being damaged, and quickly and accurately insert the sample collection component into the drilled hole when drilling to the predetermined depth. The sample is completely collected and sealed in the sample tube or sample box using specific mechanical structures or sealing devices. At the same time, auxiliary equipment is used to record sample information and collect environmental data. Finally, the collected sample is properly packaged to ensure its safety and integrity during transportation, and to prepare for subsequent laboratory analysis and research.

[0004] However, during the freezing process, soil particles in the frozen soil form tiny ice crystals or ice particles, and there are gaps or holes between these ice crystals or ice particles. When the collection drill bit comes into contact with the frozen soil, if the soil particles have strong adhesion or there is a thin layer of unfrozen soil on the surface of the frozen soil, the soil particles will adhere to the surface of the collection drill bit, causing the drilling resistance to suddenly increase or decrease, affecting the continuity of soil collection and causing the edges of the sample to be damaged or deformed, thereby affecting the integrity of the soil sample. SUMMARY

[0005] The purpose of the present application is to provide a frozen soil sample collection device for high altitudes to solve the problems raised in the background art.

[0006] To solve the above technical problems, the present application provides the following technical scheme: a frozen soil sample collection device for high altitudes, comprising: a support rod, a support base fixedly connected to one end of the support rod, and a motor fixedly connected to the other end of the support rod;

[0007] A drilling structure, the drilling and sampling structure comprising: a rotating shaft fixedly connected to the motor at one end, an outer drill cylinder fixedly connected to the rotating shaft, an outer drill cone fixedly connected to the outer drill cylinder, and a drilling assembly fixedly connected to the surface of the outer drill cone;

[0008] The drag reduction structure comprises a positioning slot opened on the surface of the outer drill cylinder, a scraper slidingly connected to the surface of the positioning slot, a dynamic drag reduction assembly fixedly connected to the surface of the scraper and located inside the outer drill cylinder, a sleeve shaft penetrating the inside of the rotating shaft and fixedly connected to the motor at one end, and a vibration assembly fixedly connected to the surface of the sleeve shaft and located at the side of the dynamic drag reduction assembly.

[0009] As a preferred scheme of the frozen soil sample collection device for high altitude, the support base top is fixedly connected with a protective shell, the protective shell is coaxially sleeved on the outer circumference of the rotating shaft, and a radial gap protection is formed between the protective shell and the rotating shaft, the support rod is provided in a hollow tubular structure, the inner cavity axis of the hollow tubular structure coincides with the center line of the protective shell, the rotating shaft penetrates the central through hole of the support base, the inner cavity of the protective shell and the inner cavity of the support rod in sequence, and the end of the rotating shaft is rigidly connected with the output shaft of the motor through a shaft coupling.

[0010] As a preferred scheme of the frozen soil sample collection device for high altitude, the drilling assembly comprises a spiral saw one fixedly connected to the surface of the outer drill cylinder and a spiral saw two fixedly connected to the surface of the outer drill cone, the saw gap of the spiral saw one is provided as a first size, the saw gap of the spiral saw two is provided as a second size, and the first size is greater than the second size.

[0011] As a preferred scheme of the frozen soil sample collection device for high altitude, the dynamic drag reduction assembly comprises a positioning block fixedly connected to the surface of the scraper, a connecting block fixedly connected to the end of the positioning block away from the scraper, a spring steel sheet one fixedly connected to the connecting block at one end and fixedly connected to the surface of the rotating shaft at the other end, and a spring steel sheet two fixedly connected to the surface of the rotating shaft at one end and fixedly connected to the surface of the connecting block at the other end.

[0012] As a preferred scheme of the frozen soil sample collection device for high altitude, the first end of the spring steel sheet one is welded to the surface of the connecting block, the second end is welded to the surface of the rotating shaft, and the spring steel sheet one extends spirally in a clockwise direction.

[0013] The first end of the spring steel sheet two is welded to the surface of the rotating shaft, the second end is welded to the surface of the connecting block, and the spring steel sheet two extends spirally in a clockwise direction.

[0014] The spiral extension axes of the spring steel sheet one and the spring steel sheet two are distributed in a 180° spatial symmetry.

[0015] As a preferred scheme of the high-altitude permafrost sample collection device, the axial end surface of the positioning block is provided with a through limiting groove, a limiting pin is slidingly connected in the limiting groove, and the two ends of the limiting pin are respectively welded and fixed to the inner surface of the outer drill cylinder.

[0016] As a preferred scheme of the high-altitude permafrost sample collection device, the vibration assembly comprises an eccentric wheel one fixedly connected to the surface of the sleeve shaft, an eccentric wheel two fixedly connected to the surface of the sleeve shaft and located below the eccentric wheel one, the size of the eccentric wheel one is larger than the size of the eccentric wheel two, and a conical energy concentrator fixedly connected to the sleeve shaft and located below the eccentric wheel two, the conical energy concentrator is slidingly connected to the tip surface of the outer drill cone.

[0017] As a preferred scheme of the high-altitude permafrost sample collection device, the surface of the conical energy concentrator is slidingly connected with two mutually symmetrical transmission members, one end of the transmission member away from the conical energy concentrator is fixedly connected to the surface of the outer drill cone.

[0018] The transmission member comprises a transmission plate one and a transmission plate two, the transmission plate one is matched with the eccentric wheel one, the transmission plate two is matched with the eccentric wheel two, a transmission spring one is fixedly connected between the transmission plate one and the outer drill cone, and a transmission spring two is fixedly connected between the transmission plate two and the outer drill cone.

[0019] As a preferred scheme of the high-altitude permafrost sample collection device, the top end of the motor is fixedly connected with a handrail, and the surface of the support base is fixedly connected with a connecting rod.

[0020] The surface of the support rod is fixedly connected with a fixed base, the surface of the fixed base is fixedly connected with a supporting piece one, and the surface of the supporting piece one is rotatably connected with a fixed rod.

[0021] As a preferred scheme of the high-altitude permafrost sample collection device, the surface of the support base is fixedly connected with a hydraulic seat, the surface of the hydraulic seat is telescopically connected with a telescopic rod, the surface of the telescopic rod is fixedly connected with a mounting base, the lower surface of the mounting base is fixedly connected with a gripping piece, and the upper surface of the mounting base is fixedly connected with a supporting piece two matched with the fixed rod.

[0022] The beneficial effects of the present application: through the setting of spiral saws of different sizes in the drilling structure, different characteristics of soil particles in frozen soil can be effectively treated, changes in drilling resistance caused by poor particle adhesion are avoided, and the continuity of the collection process and the integrity of the sample are ensured. The dynamic drag reduction component in the drag reduction structure can effectively disperse the pressure and resistance in the drilling process through the spiral extension design of the spring steel sheet, reduce the drilling resistance fluctuation caused by the ice crystal or ice particle gap in the frozen soil layer, and further improve the collection efficiency and sample quality. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0025] Figure 2 It is a schematic diagram of the outer drill cylinder structure of the present application.

[0026] Figure 3 It is Figure 2 It is an enlarged schematic diagram of A in the middle.

[0027] Figure 4 It is a schematic diagram of the ground gripping member structure of the present application.

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the outer drill cylinder of the present application.

[0029] Figure 6 It is a schematic diagram of the dynamic drag reduction component structure of the present application.

[0030] Figure 7 It is a top view schematic diagram of the dynamic drag reduction component of the present application.

[0031] Figure 8 It is a schematic diagram of the vibration component structure of the present application.

[0032] Figure 9 It is a schematic diagram of the overall structure of the present application.

[0033] Figure 10 It is a top view schematic diagram of the overall structure of the present application.

[0034] In the figure: 100, support rod; 101, support base; 102, protective shell; 103, motor; 104, connecting rod; 105, handrail; 200, rotating shaft; 201, outer drill cylinder; 202, outer drill cone; 203, spiral saw one; 204, spiral saw two; 300, positioning groove; 301, scraper; 302, positioning block; 303, limiting groove; 304, limiting pin; 305, connecting block; 306, spring steel sheet one; 307, spring steel sheet two; 400, sleeve shaft; 401, conical energy concentrator; 402, eccentric wheel one; 403, eccentric wheel two; 404, transmission part; 4041, transmission plate one; 4042, transmission plate two; 405, transmission spring one; 406, transmission spring two; 500, fixed base; 501, supporting piece one; 502, fixed rod; 503, supporting piece two; 504, mounting base; 505, gripping piece; 506, telescopic rod; 507, hydraulic seat. DETAILED DESCRIPTION

[0035] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0036] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein. In other instances, well-known methods have not been described in detail in order to avoid unnecessarily obscuring the present application.

[0037] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor does it mean that the embodiment is mutually exclusive with other embodiments.

[0038] Thirdly, the present application is described in detail in conjunction with the schematic diagram. In the detailed description of the embodiments of the present application, the cross-sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0039] Embodiment 1, refer to Figures 1-4For the first embodiment of the present application, a frozen soil sample collection device for high altitude is provided, which comprises a support rod 100, a support base 101 fixedly connected to one end of the support rod 100, and a motor 103 fixedly connected to the other end of the support rod 100; by setting the combination of the support rod 100, the support base 101 and the motor 103, the benefits of stable support and power output can be achieved. In use, the support base 101 is stably placed on the ground, and the motor 103 drives the rotation of the rotating shaft 200, thereby driving the drilling structure to work.

[0040] The drilling structure, the drilling and sampling structure comprises a rotating shaft 200 fixedly connected to the motor 103 at one end, an outer drill cylinder 201 fixedly connected to the rotating shaft 200, an outer drill cone 202 fixedly connected to the outer drill cylinder 201, and a drilling assembly fixedly connected to the surface of the outer drill cone 202; by setting the drilling structure, efficient collection of frozen soil samples can be achieved. In use, the diameter of the outer drill cylinder 201 is 10 cm, the outer drill cylinder 201 and the outer drill cone 202 penetrate into the frozen soil with the rotation of the rotating shaft 200, and the drilling assembly is responsible for cutting the frozen soil and collecting the sample, and the material of the drilling structure is hard enough to cope with the hard characteristics of the frozen soil at high altitude.

[0041] The drag reduction structure, the drag reduction structure comprises a positioning groove 300 opened on the surface of the outer drill cylinder 201, a scraper 301 slidingly connected to the surface of the positioning groove 300, a dynamic drag reduction assembly fixedly connected to the surface of the scraper 301 and located inside the outer drill cylinder 201, a sleeve shaft 400 penetrating the inside of the rotating shaft 200 and fixedly connected to the motor 103 at one end, and a vibration assembly fixedly connected to the surface of the sleeve shaft 400 and located on the side of the dynamic drag reduction assembly. By setting the drag reduction structure, the resistance in the drilling process can be reduced, and the collection efficiency can be improved. The scraper 301 slides in the positioning groove 300, the dynamic drag reduction assembly adjusts the position with the movement of the scraper 301, reduces the friction with the outer drill cylinder 201, and at the same time, the vibration generated by the vibration assembly can further reduce the adhesion of the frozen soil, making the drilling process more smooth, and the adjustment of the drag reduction structure should be according to the hardness and depth of the frozen soil.

[0042] The support base 101 has a protective shell 102 fixedly connected to its top surface. The protective shell 102 is coaxially fitted around the outer circumference of the rotating shaft 200, forming a radial gap for protection. The support rod 100 is a hollow tubular structure, with its inner cavity axis coinciding with the center line of the protective shell 102. The rotating shaft 200 passes sequentially through the central through hole of the support base 101, the inner cavity of the protective shell 102, and the inner cavity of the support rod 100. The end of the rotating shaft 200 is rigidly connected to the output shaft of the motor 103 via a coupling. By using the protective shell 102 and the hollow tubular support rod 100, the rotating shaft 200 and the motor 103 are protected. The protective shell 102 prevents external impurities from entering the rotating shaft 200 and causing damage. Simultaneously, the hollow tubular support rod 100 reduces the overall weight of the device, improving portability. The materials of the protective shell 102 and the support rod 100 should possess sufficient strength and corrosion resistance.

[0043] During use, when using this frozen soil sample collection device, first fix one end of the support rod 100 to the support base 101, and connect the other end to the motor 103. Ensure that the protective shell 102 is coaxially sleeved outside the rotating shaft 200 and maintains a radial clearance. The drilling assembly is installed on the outer drill barrel 201 and the outer drill cone 202. After starting the motor 103, the motor 103 drives the rotating shaft 200 to rotate through the coupling, thereby causing the outer drill barrel 201 and the outer drill cone 202 to rotate synchronously. As the rotating shaft 200 rotates, the spiral saw 203 on the surface of the outer drill barrel 201 and the spiral saw 204 on the surface of the outer drill cone 202 cut into the frozen soil layer with different saw gap sizes to perform layered cutting. The initial cutting is completed by the spiral saw 203, forming a larger cutting surface. Subsequently, the spiral saw 204 performs fine cutting at a deeper level to ensure sampling depth and accuracy. Meanwhile, the positioning groove 300 and scraper 301 in the drag reduction structure scrape off the frozen soil adhering to the surface of the outer drill barrel 201 during rotation, reducing the adhesion force. The dynamic drag reduction component and the vibration component work together to generate vibration and dynamically adjust, further reducing the resistance of the outer drill barrel 201 and the outer drill cone 202, and improving drilling efficiency. During the drilling process, the cut samples are collected inside the outer drill barrel 201. After reaching the predetermined sampling depth, the motor 103 is turned off, the rotation stops, and the collected samples are taken out for analysis and research.

[0044] Example 2, refer to Figures 1-7This is the second embodiment of the present invention, which differs from the first embodiment in that the drilling assembly includes: a spiral saw 203 fixedly connected to the surface of the outer drill barrel 201, and a spiral saw 204 fixedly connected to the surface of the outer drill cone 202. The sawing gap of the spiral saw 203 is set to a first dimension, and the sawing gap of the spiral saw 204 is set to a second dimension, with the first dimension being larger than the second dimension. The drilling assembly includes a spiral saw 203 fixed to the surface of the outer drill barrel 201 and a spiral saw 204 fixed to the surface of the outer drill cone 202. This double spiral saw structure enables layered cutting. The spiral saw 203 is responsible for the initial cutting of the frozen soil, forming a larger cutting surface; the spiral saw 204 cuts at a deeper level, ensuring sampling depth and accuracy. The sawing gap of the spiral saw 203 is set to the first dimension, and the sawing gap of the spiral saw 204 is set to the second dimension, with the first dimension being larger than the second dimension. This design allows for the rapid cutting of large quantities of frozen soil during initial cutting, improving work efficiency; while during deep cutting, the smaller saw gap ensures the precision of the cut and the integrity of the sample.

[0045] Compared to Embodiment 1, the dynamic drag reduction component further includes: a positioning block 302 fixedly connected to the surface of the scraper 301, a connecting block 305 fixedly connected to the end of the positioning block 302 away from the scraper 301, a spring steel sheet 306 fixedly connected at one end to the connecting block 305 and at the other end to the surface of the rotating shaft 200, and a spring steel sheet 307 fixedly connected at one end to the surface of the rotating shaft 200 and at the other end to the surface of the connecting block 305.

[0046] When the outer drill barrel 201 is stationary or rotating at low speed, the radial spring steel sheet 306 and the spring steel sheet 307 are in a retracted state under the tension of the spring and are tightly attached to the outer wall of the rotating shaft 200. At this time, the scraper 301 is located on the inner side of the outer cylinder of the outer drill barrel 201 and will not come into contact with the outer spiral saw 203. As the rotational speed of the shaft 200 gradually increases, when it reaches or exceeds the set threshold, the scraper 301 overcomes the tension of the spring under the action of centrifugal force and expands radially outward along the positioning groove 300. As the spring steel sheet expands, the tungsten carbide scraper 301 at its end gradually moves outward, passes through the radial gap between the outer and inner layers of the outer drill barrel 201, and finally contacts the hole wall formed by the outer layer blade. After contacting the hole wall, the scraper 301 scrapes the hole wall with the continuous rotation of the inner base, removing the frozen soil layer adhering to the hole wall. Here, the hole wall refers to the inner wall of the cylindrical hole formed by the outer drill barrel 201 drilling in the frozen soil layer.

[0047] Furthermore, the first end of spring steel sheet 306 is welded to the surface of connecting block 305, the second end is welded to the surface of rotating shaft 200, and extends spirally in a clockwise direction. The first end of spring steel sheet 307 is welded to the surface of rotating shaft 200, the second end is welded to the surface of connecting block 305, and extends spirally in a clockwise direction. The spiral extension axes of spring steel sheet 306 and spring steel sheet 307 are spatially symmetrically distributed at 180°.

[0048] When the rotational speed of the shaft 200 reaches the set threshold, the spring steel sheet 306 and the spring steel sheet 307 are spread outward by centrifugal force, so that the scraper 301 continuously scrapes the hole wall under contact pressure, removes the adhering ice crystal-soil mixture, and avoids the formation of a friction dead zone between the drill barrel and the hole wall.

[0049] After the spring steel sheet is unfolded, its diameter increases from 10cm to 15cm, which compensates in real time for the pore size shrinkage caused by the rebound of frozen soil or the melting of ice crystals, ensuring that the size of the sampling cavity remains constant, thereby maintaining the integrity of the sample morphology.

[0050] Because the scraper 301 can effectively remove the bonding layer on the borehole wall, the outer drill barrel 201 and the outer drill cone 202 can maintain good working condition during drilling, reducing blockage caused by bonding, thereby enhancing sampling continuity and improving work efficiency. During drilling, the scraper 301 not only cleans the borehole wall, but also avoids the mixing of frozen soil samples from different depths, thereby improving the purity and representativeness of the collected samples, providing more accurate samples for subsequent research. It can work effectively in frozen soil layers with different hardness and bonding properties, making the equipment more adaptable and reliable, ensuring stable operation under complex geological conditions, and completing the sampling task.

[0051] Furthermore, the axial end face of the positioning block 302 is provided with a through-type limiting groove 303, and a limiting pin 304 is slidably fitted in the limiting groove 303. The two ends of the limiting pin 304 are respectively welded and fixed to the inner surface of the outer drill barrel 201.

[0052] By using the limit groove 303 and the limit pin 304, the extension distance of the scraper 301 during the working process can be precisely controlled, ensuring that the scraper 301 performs scraping operations within a predetermined range. This helps to prevent the scraper 301 from extending excessively, thereby protecting the scraper 301 and the workpiece from damage.

[0053] The remaining structure is the same as that in Example 1.

[0054] Example 3, referring to Figures 1-8This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the vibration assembly includes: an eccentric wheel 402 fixedly connected to the surface of the sleeve shaft 400; an eccentric wheel 403 fixedly connected to the surface of the sleeve shaft 400 and located below the eccentric wheel 402; the size of the eccentric wheel 402 is larger than the size of the eccentric wheel 403; and a conical energy concentrator 401 fixedly connected to the sleeve shaft 400 and located below the eccentric wheel 403. The conical energy concentrator 401 is slidably connected to the tip surface of the outer drill bit 202.

[0055] By setting eccentric wheels 402 and 403 of different sizes, more complex and efficient vibration modes can be generated. The larger size of eccentric wheel 402 can generate a larger amplitude in the low-frequency range, which is used to initially break the ice crystal structure of the permafrost; the smaller size of eccentric wheel 403 generates a finer vibration in the high-frequency range, which is used to finely adjust the contact state between the outer drill barrel 201 and the outer drill cone 202 and the permafrost, further reducing drilling resistance. The conical energy concentrator 401 is slidably connected to the tip of the outer drill cone 202, which can more accurately transmit vibration energy to the working area of ​​the outer drill barrel 201 and the outer drill cone 202, so that the vibration energy is less lost during transmission, and can automatically adjust the focusing degree of vibration according to the real-time working conditions of the outer drill barrel 201 and the outer drill cone 202, thereby improving energy utilization efficiency.

[0056] Compared to Embodiment 2, the conical energy concentrator 401 is further provided with two mutually symmetrical transmission members 404 slidably connected to its surface. The end of the transmission member 404 away from the conical energy concentrator 401 is fixedly connected to the surface of the outer drill bit 202. The two mutually symmetrical transmission members 404 slidably connected to the surface of the conical energy concentrator 401 can distribute the vibration energy transmitted from the energy concentrator more evenly to the surface of the outer drill bit 202. This design avoids uneven loading of vibration energy, allowing it to be transmitted more concentratedly and efficiently to the surfaces of the outer drill barrel 201 and the outer drill cone 202. This effectively loosens and removes frozen soil adhering to their surfaces, reduces the adhesion between the drill bit and the frozen soil, improves drilling efficiency, and ensures that the vibration force on the outer drill cone 202 is balanced in all directions. This enhances the overall stability and drilling efficiency of the outer drill barrel 201 and the outer drill cone 202. The sliding connection between the transmission component 404 and the conical energy concentrator 401 allows the entire system to automatically adjust the vibration transmission method and intensity when facing frozen soil layers with different hardness and cohesion. When encountering harder frozen soil layers, the transmission component 404 can appropriately increase the clamping force on the vibration transmission plate under the drive of the conical energy concentrator 401, thereby enhancing the vibration transmission effect. In softer frozen soil layers, the clamping force can be reduced to avoid excessive vibration that could damage the outer drill barrel 201 and the outer drill cone 202.

[0057] The transmission component 404 includes: a vibration transmission plate 4041 and a vibration transmission plate 4042. Vibration transmission plate 4041 is adapted to eccentric wheel 402, and vibration transmission plate 4042 is adapted to eccentric wheel 403. A vibration transmission spring 405 is fixedly connected between vibration transmission plate 4041 and the outer drill bit 202, and a vibration transmission spring 406 is fixedly connected between vibration transmission plate 4042 and the outer drill bit 202. The targeted design of vibration transmission plate 4041 and eccentric wheel 402, and vibration transmission plate 4042 and eccentric wheel 403, enables more efficient vibration coupling. The vibration transmission plates can quickly and effectively transmit the vibration energy generated by the eccentric wheel to the outer drill bit 202. Through the buffering and regulating effects of vibration transmission springs 405 and 406, the vibration energy is more evenly distributed on the outer drill bit 202, avoiding excessively strong or weak local vibrations. To avoid equipment damage due to excessive local vibration or incomplete soil removal due to insufficient local vibration, ensure that clay is effectively removed from the entire drill bit surface.

[0058] The remaining structure is the same as that in Example 2.

[0059] Example 4, refer to Figures 1-10 This is the fourth embodiment of the present invention. The difference between this embodiment and the third embodiment is that: a handrail 105 is fixedly connected to the top of the motor 103, and a connecting rod 104 is fixedly connected to the surface of the support base 101.

[0060] A fixed base 500 is fixedly connected to the surface of the support rod 100, a support member 501 is fixedly connected to the surface of the fixed base 500, and a fixed rod 502 is rotatably connected to the surface of the support member 501.

[0061] The handrail 105 allows operators to better control and stabilize the equipment during operation, especially when encountering resistance or equipment vibration during drilling. Operators can apply appropriate force through the handrail 105 to maintain the balance of the equipment and the accuracy of the drilling direction. The connecting rod 104 connects the support base 101 with other components to form an organic whole, enhancing the structural stability and load-bearing capacity of the equipment, enabling the equipment to maintain good working condition even in complex terrain conditions. When using the equipment, operators should hold the handrail 105 with both hands and adjust the grip strength and body posture appropriately according to the operating conditions of the equipment and the ground conditions to achieve the best operating effect.

[0062] Compared to embodiment 3, further, a hydraulic seat 507 is fixedly connected to the surface of the support base 101, a telescopic rod 506 is telescopically connected to the surface of the hydraulic seat 507, a mounting base 504 is fixedly connected to the surface of the telescopic rod 506, a gripping member 505 is fixedly connected to the lower surface of the mounting base 504, and a support member 503 adapted to the fixing rod 502 is fixedly connected to the upper surface of the mounting base 504.

[0063] The fixed base 500 is connected to the fixed rod 502 via the support piece 501, providing an additional support point for the equipment. This makes the equipment more stable during drilling, reducing swaying and displacement caused by uneven ground or equipment vibration. The rotatable connection between the support piece 501 and the fixed rod 502 allows for adjustment of the angle of the fixed rod 502 within a certain range, enabling the equipment to adapt to different terrains and drilling angle requirements, thus enhancing the equipment's versatility and adaptability. During installation, the fixed base 500 is securely connected to the support rod 100, and then the support piece 501 and the fixed rod 502 are assembled to ensure the flexibility and reliability of the rotatable connection. During use, the angle of the fixed rod 502 is adjusted according to actual needs and secured with fasteners to ensure stable support for the sampling equipment.

[0064] The remaining structure is the same as that in Example 3.

[0065] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0066] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0067] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A device for collecting permafrost samples at high altitudes, comprising: The support rod (100), the support base (101) fixedly connected to one end of the support rod (100), and the motor (103) fixedly connected to the other end of the support rod (100); characterized in that: The drilling structure includes: a rotating shaft (200) fixedly connected at one end to the motor (103), an outer drill barrel (201) fixedly connected to the rotating shaft (200), an outer drill cone (202) fixedly connected to the outer drill barrel (201), and a drilling assembly fixedly connected to the surface of the outer drill cone (202). The drag reduction structure includes: a positioning groove (300) formed on the surface of the outer drill barrel (201); a scraper (301) slidably connected to the surface of the positioning groove (300); a dynamic drag reduction component fixedly connected to the surface of the scraper (301) and located inside the outer drill barrel (201); a sleeve shaft (400) penetrating inside the rotating shaft (200) and fixedly connected at one end to the motor (103); and a vibration component fixedly connected to the surface of the sleeve shaft (400) and located on the side of the dynamic drag reduction component.

2. The permafrost sample collection device for high-altitude areas according to claim 1, characterized in that: A protective shell (102) is fixedly connected to the top surface of the support base (101). The protective shell (102) is coaxially sleeved on the outer circumference of the rotating shaft (200) and forms a radial gap between it and the rotating shaft (200) for protection. The support rod (100) is configured as a hollow tubular structure. The inner axis of the hollow tubular structure coincides with the center line of the protective shell (102). The rotating shaft (200) passes through the central through hole of the support base (101), the inner cavity of the protective shell (102), and the inner cavity of the support rod (100) in sequence. The end of the rotating shaft (200) is rigidly connected to the output shaft of the motor (103) through a coupling.

3. The permafrost sample collection device for high-altitude areas according to claim 2, characterized in that: The drilling assembly includes: a spiral saw (203) fixedly connected to the surface of the outer drill barrel (201), and a spiral saw (204) fixedly connected to the surface of the outer drill cone (202). The sawing gap of the spiral saw (203) is set to a first size, and the sawing gap of the spiral saw (204) is set to a second size, and the first size is greater than the second size.

4. The permafrost sample collection device for high-altitude areas according to claim 3, characterized in that: The dynamic drag reduction assembly includes: a positioning block (302) fixedly connected to the surface of the scraper (301); a connecting block (305) fixedly connected to one end of the positioning block (302) away from the scraper (301); a spring steel sheet one (306) fixedly connected to the connecting block (305) at one end and fixedly connected to the surface of the rotating shaft (200) at the other end; and a spring steel sheet two (307) fixedly connected to the surface of the rotating shaft (200) at one end and fixedly connected to the surface of the connecting block (305) at the other end.

5. A permafrost sample collection device for high-altitude areas according to claim 4, characterized in that: The first end of the spring steel sheet (306) is welded to the surface of the connecting block (305), the second end is welded to the surface of the rotating shaft (200), and extends spirally in a clockwise direction; The first end of the second spring steel sheet (307) is welded to the surface of the rotating shaft (200), the second end is welded to the surface of the connecting block (305), and extends spirally in a clockwise direction; The spiral extension axes of the first spring steel sheet (306) and the second spring steel sheet (307) are spatially symmetrically distributed at 180°.

6. The permafrost sample collection device for high-altitude frozen soil as described in claim 5, characterized in that: The axial end face of the positioning block (302) is provided with a through-type limiting groove (303), and a limiting pin (304) is slidably fitted in the limiting groove (303). The two ends of the limiting pin (304) are respectively welded and fixed to the inner surface of the outer drill barrel (201).

7. A permafrost sample collection device for high-altitude environments according to claim 6, characterized in that: The vibration assembly includes: an eccentric wheel one (402) fixedly connected to the surface of the sleeve shaft (400), an eccentric wheel two (403) fixedly connected to the surface of the sleeve shaft (400) and located below the eccentric wheel one (402), the size of the eccentric wheel one (402) being larger than the size of the eccentric wheel two (403), and a conical energy concentrator (401) fixedly connected to the sleeve shaft (400) and located below the eccentric wheel two (403), the conical energy concentrator (401) being slidably connected to the tip surface of the outer drill bit (202).

8. A permafrost sample collection device for high-altitude environments according to claim 7, characterized in that: The surface of the conical energy concentrator (401) is slidably connected to two mutually symmetrical transmission components (404), and one end of the transmission component (404) away from the conical energy concentrator (401) is fixedly connected to the surface of the outer drill bit (202). The transmission component (404) includes: a first vibration plate (4041) and a second vibration plate (4042). The first vibration plate (4041) is adapted to the first eccentric wheel (402), and the second vibration plate (4042) is adapted to the second eccentric wheel (403). A first vibration spring (405) is fixedly connected between the first vibration plate (4041) and the outer drill bit (202), and a second vibration spring (406) is fixedly connected between the second vibration plate (4042) and the outer drill bit (202).

9. A device for collecting frozen soil samples at high altitudes according to claim 8, characterized in that: A handrail (105) is fixedly connected to the top of the motor (103), and a connecting rod (104) is fixedly connected to the surface of the support base (101); A fixed base (500) is fixedly connected to the surface of the support rod (100), a support member (501) is fixedly connected to the surface of the fixed base (500), and a fixed rod (502) is rotatably connected to the surface of the support member (501).

10. A permafrost sample collection device for high-altitude environments according to claim 9, characterized in that: A hydraulic base (507) is fixedly connected to the surface of the support base (101), a telescopic rod (506) is telescopically connected to the surface of the hydraulic base (507), an installation base (504) is fixedly connected to the surface of the telescopic rod (506), a ground gripper (505) is fixedly connected to the lower surface of the installation base (504), and a support member (503) adapted to the fixing rod (502) is fixedly connected to the upper surface of the installation base (504).

Images