Adjustable biological soil crust puncturing device

Abstract

The utility model provides an adjustable biological soil crust puncturing device, and relates to the technical field of desert environment treatment. The device comprises a sampling piece used for puncturing and collecting biological soil crust; the sampling fixing device is used for placing and fixing a sampling piece; the sampling fixing device is arranged in the positioning frame body and can do relative motion along the axis of the positioning frame body; the puncture thickness adjusting device is used for adjusting the position of the sampling fixing device in the positioning frame body; wherein the puncture thickness adjusting device is used for adjusting the position of the sampling fixing device in the positioning frame body so as to control the protruding length of the sampling piece from one side, far away from the puncture thickness adjusting device, of the positioning frame body, so that the adjustment of the puncture thickness of the biological soil crust is realized. According to the technical scheme, the operability and accuracy of crust puncture thickness adjustment can be improved, and an efficient test sampling device is provided for quantitatively analyzing the influence of the crust thickness on an underground seed bank.

Description

TECHNICAL FIELD

[0001] The utility model relates to desert environment management technical field especially, relate to an adjustable biological soil crust piercing device. BACKGROUND

[0002] Biological soil crust (Biological Soil Crusts) is also called biological soil crust, soil microbial crust, etc., which is a complex formed by microbacteria, fungi, algae, lichens, mosses and other cryptogams, their mycelium and secretions, etc. and soil sand and gravel, and is an important ground cover type (more than 40%) in arid and semiarid regions. Biological crust is also one of the most characteristic biological landscapes in arid and semiarid deserts. The existence of biological crust has important significance in soil fixation, physical, chemical and biological properties of soil surface, soil erosion resistance, etc. Biological soil crust is also a pioneer species of desert vegetation succession, and plays an important role in promoting desert vegetation evolution.

[0003] At present, biological soil crust is widely distributed in arid and semiarid regions, and has important effects on soil erosion inhibition, water and nutrient circulation regulation, etc. However, the existence of biological soil crust will also affect the germination of underground seeds to some extent, especially the thickness of the crust directly determines whether the seeds can successfully break through the ground to complete the germination process. When the soil crust is too thick, the germination of seeds is seriously inhibited, and thus the process of soil hardening and land desertification and desertification is accelerated.

[0004] At present, the research on biological soil crust in the market mainly focuses on its ecological function and cause analysis, and there is no equipment that can accurately pierce and collect samples of biological soil crust with different thicknesses. At the same time, the related technology cannot flexibly adjust the device according to the specific experimental requirements to realize the control of sample plot processing area and piercing depth, so as to realize the quantitative research on the influence of biological soil crust thickness on underground seed bank, which is not conducive to the development of targeted ecological restoration measures.

[0005] Therefore, there is an urgent need for a device that can pierce biological soil crust with different thicknesses and realize sample collection. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of adjustable biological soil crust piercing device, to further can improve the operability and accuracy of crust piercing thickness adjustment, and provide efficient test sampling device for quantitative analysis of the influence of crust thickness on underground seed bank.

[0007] Additional aspects and advantages of the utility model will be in part set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the utility model.

[0008] According to one aspect of the present application, a biological soil crust puncture device is provided, which comprises:

[0009] At least one sampling member for puncturing and collecting the biological soil crust;

[0010] A sampling fixing device comprising a plurality of fixing positions uniformly distributed, the fixing positions being used for placing and fixing the sampling member;

[0011] A positioning frame body surrounded by four side plates, the sampling fixing device being arranged inside the positioning frame body and capable of moving along the axis of the positioning frame body;

[0012] A puncture thickness adjusting device detachably connected to one side of the positioning frame body and used for adjusting the position of the sampling fixing device in the positioning frame body;

[0013] The puncture thickness adjusting device adjusts the position of the sampling fixing device in the positioning frame body to control the protruding length of the sampling member from the side of the positioning frame body away from the puncture thickness adjusting device, thereby adjusting the puncture thickness of the biological soil crust.

[0014] According to one embodiment of the present application, the sampling member comprises:

[0015] A sampling cylinder body;

[0016] A fixing boss arranged at one end of the sampling cylinder body and fixedly connected with the sampling cylinder body;

[0017] A puncture tooth arranged at the other end of the sampling cylinder body and integrally connected with the sampling cylinder body;

[0018] After the puncture tooth punctures the biological soil crust, part of the biological soil crust remains inside the sampling cylinder body.

[0019] According to one embodiment of the present application, the sampling cylinder body comprises:

[0020] A strip-shaped observation window arranged on the side wall of the sampling cylinder body;

[0021] A measurement scale stripe arranged on the circumferential side of the strip-shaped observation window and used for observing and measuring the thickness of the biological soil crust remaining inside the sampling cylinder body.

[0022] According to one embodiment of the present application, the sampling fixing device comprises:

[0023] A positioning plate, a plurality of said fixed positions are uniformly distributed on the positioning plate, the fixed position is a placing opening opened on the positioning plate, the sampling part is partially through the placing opening, and the fixed boss of the sampling part is lapped in the placing opening;

[0024] A pressing plate is arranged on one side of the positioning plate close to the fixed boss, and the other side is abutted with the piercing thickness adjusting device, and the fixed boss is clamped with the positioning plate to fix the sampling part in the placing opening.

[0025] According to an embodiment of the utility model, the piercing thickness adjusting device comprises:

[0026] A bottom plate is arranged on the side of the pressing plate away from the positioning plate and abutted with the pressing plate, and the bottom plate comprises a positioning hole;

[0027] A fixed plate is fixedly connected with the opposite two side plates of the positioning frame body at both ends and comprises a screw hole;

[0028] A pressing screw rod comprises a threaded segment arranged at one end of the pressing screw rod, the pressing screw rod is fixedly connected with the fixed plate through the threaded segment and the screw hole, and the end of the threaded segment is abutted in the positioning hole;

[0029] Wherein, the pressing screw rod adjusts the interval distance between the fixed plate and the plane where the bottom plate is located through the screw hole and the threaded segment, so as to adjust the position of the sampling fixing device in the positioning frame body.

[0030] According to an embodiment of the utility model, the both ends of the fixed plate are stepped surfaces, and the fixed plate is fixedly connected with the side plate through the stepped surface and a lock piece.

[0031] According to an embodiment of the utility model, the pressing screw rod comprises a rotary handle arranged at one end of the pressing screw rod away from the threaded segment, which is used to provide rotary force and pressing force on the adjustable biological soil crust piercing device.

[0032] According to an embodiment of the utility model, the inner wall of the positioning frame body is provided with an elastic device, the positioning plate provides a rebound force when placed in the inside of the positioning frame body, and the direction of the rebound force is the direction close to the piercing thickness adjusting device.

[0033] According to an embodiment of the utility model, the both ends of the side plate comprise a fixed buckle, and the side plates are fixedly connected through the fixed buckles, forming a rectangular positioning frame body.

[0034] According to an embodiment of the utility model, the inner wall of the side plate is provided with a thickness scale stripe.

[0035] From the above technical solutions, the utility model has at least one of the following advantages and positive effects:

[0036] Through the combination of at least one sampling member and the sampling fixing device, biological soil crust can be effectively pierced and crust sample collection can be realized, by setting different numbers of sampling members or adjusting the cross-sectional size of the sampling members, targeted experimental sample support can be provided in the study of biological soil crust thickness influencing factors, thereby meeting different experimental needs, and through the introduction of the piercing thickness adjusting device, the piercing depth of the sampling member can be flexibly adjusted according to the required crust thickness, which helps to improve the accuracy and representativeness of sample collection.

[0037] Through the setting of the positioning frame body and the uniform distribution of the fixed positions on the sampling fixing device, multi-point sampling operation can be ensured within the research area range, piercing or sampling efficiency is improved, sample deviation caused by single sampling mode is avoided, and larger range of soil research needs is adapted, meanwhile, through the axis direction adjusting function of the positioning frame body, flexible adjustment of the sampling member is realized, and the operability and accuracy of the piercing thickness adjustment are improved.

[0038] Through the piercing thickness adjusting device to control the position of the sampling member in the positioning frame body, the piercing depth adjusting capability is realized, the excitation effect on the underground seed bank is indirectly optimized, the ecological restoration research in land desertification and desertification areas is facilitated, and through the modular design of the sampling member, the number and position of the piercing components can be flexibly changed according to specific experimental needs, and the expandability and adaptability of the device are improved.

[0039] Through the coordinated action of the multiple components of the adjustable biological soil crust piercing device, the problem that biological soil crust cannot be pierced with adjustable thickness in the related art is solved, and accurate sampling of crusts with different thicknesses is realized, which provides an efficient and reliable solution for quantitative analysis of the influence of crust thickness on the underground seed bank, effectively filling the technical gap in the existing field. BRIEF DESCRIPTION OF DRAWINGS

[0040] The above and other features and advantages of the utility model will become more apparent by describing example embodiments thereof with reference to the accompanying drawings.

[0041] Figure 1 is a structural schematic view of an embodiment of the adjustable biological soil crust piercing device in the utility model.

[0042] Figure 2 is Figure 1 is a disassembly schematic view of the adjustable biological soil crust piercing device in

[0043] Figure 3 isFigure 1 Structure diagram of adjustable biological soil crust piercing device in the adjustable biological soil crust piercing device in a certain angle.

[0044] Figure 4 Is Figure 3 Sectional view diagram of adjustable biological soil crust piercing device in the adjustable biological soil crust piercing device at A-A.

[0045] Figure 5 Is the structure diagram of one embodiment of the sampling member in the utility model.

[0046] Figure 6 Is Figure 1 Local diagram of adjustable biological soil crust piercing device in the adjustable biological soil crust piercing device.

[0047] The main element reference signs in the figure are explained as follows:

[0048] 10, sampling member; 11, sampling cylinder body; 111, strip-shaped observation window; 112, measurement scale stripe; 12, fixed boss; 13, piercing tooth;

[0049] 20, sampling fixing device; 21, positioning plate; 211, placing port; 22, pressing plate;

[0050] 30, positioning frame body; 31, side plate; 311, fixed buckle;

[0051] 40, piercing thickness adjusting device; 41, bottom plate; 411, positioning hole; 42, fixed plate; 421, screw hole; 422, step surface; 423, reinforcing rib; 43, pressing screw; 431, screw thread section; 432, spinning handle. DETAILED DESCRIPTION

[0052] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and description of the same elements will be omitted from the detailed description.

[0053] Although relative terms are used in the present application, such as "upper", "lower", to describe the relative relationship of one component of the icon to another component, these terms are used in the present application only for convenience, such as the direction according to the example described in the drawings. It is understood that if the icon device is turned upside down, the component described as "upper" will become the component described as "lower". Other relative terms, such as "high", "low", "top", "bottom", "front", "back", "left", "right", etc. also have similar meanings. When a structure is "on" another structure, it can mean that the structure is integrally formed on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0054] In the present application, the terms "one", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc. ; the terms "include", "contain" and "have" are used to indicate an open-ended inclusion and refer to the presence of additional elements / components / etc. in addition to the listed elements / components / etc. ; the terms "first", "second" and "third" are used only as markers and are not a limitation on the number of their objects.

[0055] Firstly, the adjustable biological soil crust piercing device can be used to pierce the biological soil crust of the desert wasteland, prevent soil hardening, promote the seeds under the biological soil crust to germinate smoothly, and also avoid large-scale damage to the biological soil crust, especially the thickness of the piercing can be adjusted according to the thickness of the biological soil crust in different regions, so as to avoid damage to the soil under the crust and effectively improve the management effect of the desert wasteland. Of course, the adjustable biological soil crust piercing device in the present application can also be flexibly adjusted according to specific experimental requirements, such as adjusting the number and size of the sampling member to control the sample plot processing area and piercing depth, so as to realize quantitative research on the influence of biological soil crust thickness on underground seed bank, obtain a large amount of research data, improve the accuracy and reliability of sample data, and provide a data basis for the management of the desert wasteland.

[0056] Reference Figures 1 to 4 As shown in the drawings, the adjustable biological soil crust piercing device in the present application can include at least one sampling member 10, a sampling fixing device 20, a positioning frame body 30 and a piercing thickness adjusting device 40. Among them:

[0057] The sampling member 10 can be used to puncture and collect biological soil crusts, and the structure of the sampling member 10 needs to meet the dual requirements of puncture strength and sample containment. The sampling member 10 can be provided with a puncture end and a sample containment cavity. The puncture end can be designed as a sharp or multi-toothed structure of a puncture tooth, and the shape, number and distribution mode thereof can be adjusted according to the puncture requirements of biological soil crusts of different thicknesses, for example, the puncture end can be a sawtooth, a blunt cone or a double sharp, to adapt to the puncture requirements of different types of crusts. The sample containment cavity can be designed as a closed or semi-closed cylindrical structure for collecting soil crust debris after puncture and maintaining the integrity of the sample. The sampling member 10 can be connected to the sampling fixing device 20 through a fixing boss, and the fixing mode can be mechanical locking or threaded connection, to ensure that the sampling member 10 is stable during operation and does not fall off.

[0058] The sampling fixing device 20 can include a plurality of uniformly distributed fixing positions for placing and fixing the sampling member 10. The sampling fixing device 20 can be designed to support stable operation of multiple sampling members, and its function is to provide fixing and uniform distribution. In an optional embodiment, the sampling fixing device 20 can include a positioning plate and a pressing plate. The positioning plate is provided with a plurality of fixing positions which are placement openings capable of accommodating partial insertion of the sampling member 10, and the size and shape of the placement opening can match the fixing boss of the sampling member, thereby ensuring stable connection between the sampling member and the fixing device. The pressing plate included in the sampling fixing device 20 can be used to clamp the sampling member on the positioning plate, and a stable support structure is formed by contacting the fixing boss. The distance between the pressing plate and the positioning plate can be adjusted by the puncture thickness adjusting device 40 to change the puncture depth. The sampling fixing device 20 realizes the function of multi-point synchronous sampling of biological soil crusts through compact design, and its overall shape can be adjusted to rectangular, circular or other regular geometric shapes according to requirements, to adapt to different experimental scenarios.

[0059] The positioning frame body 30 can be surrounded by four side plates, and the sampling fixing device 20 is arranged inside the positioning frame body 30 and can move relatively along the axis of the positioning frame body 30. The four side plates of the positioning frame body 30 can form a frame structure capable of accommodating the sampling fixing device, and the internal space provides sliding space for the sampling fixing device 20 along the axis direction. The positioning frame body 30 is connected with the puncture thickness adjusting device 40, and the installation and removal of the adjusting device are realized through a detachable interface on one side. The connection mode of the side plates can be mechanical connection through a fixing buckle, or fixed connection through welding, to ensure the stability of the frame. The size of the positioning frame body 30 can be adjusted according to the size of the sample plot, and the internal space needs to be compatible with the puncture depth range of the sampling member 10, thereby providing support for multi-level crust puncture. The inner surface can be further provided with an elastic device to provide a rebound force for the sampling fixing device, thereby optimizing the sampling efficiency.

[0060] The piercing thickness adjusting device 40 is detachably connected to one side of the positioning frame body 30, and is used for adjusting the position of the sampling fixing device 20 in the positioning frame body 30; specifically, the piercing thickness adjusting device 40 can control the protruding length of the sampling member 10 from the side of the positioning frame body 30 away from the piercing thickness adjusting device 40 by adjusting the position of the sampling fixing device 20 in the positioning frame body 30, so as to realize the adjustment of the piercing thickness of the biological soil crust.

[0061] Through the combination of at least one sampling member 10 and the sampling fixing device 20, the biological soil crust can be effectively pierced and the crust sample can be collected; by arranging different numbers of sampling members 10 or adjusting the cross-sectional size of the sampling member 10, targeted experimental sample support can be provided in the research of the thickness influencing factors of the biological soil crust, so as to meet different experimental requirements; and through the introduction of the piercing thickness adjusting device 40, the piercing depth of the sampling member can be flexibly adjusted according to the required crust thickness, which helps to improve the accuracy and representativeness of sample collection; through the setting of the positioning frame body 30 and the uniform distribution of the fixed positions on the sampling fixing device 20, it is ensured that the device can be operated for multi-point sampling within the research area range, the piercing or sampling efficiency is improved, the sample deviation caused by single sampling mode is avoided, and the soil research requirements of a larger range are adapted; at the same time, through the axis direction adjustment function of the positioning frame body 30, the sampling member 10 can be flexibly adjusted, and the operability and accuracy of the piercing thickness adjustment are improved; through the piercing thickness adjusting device 40, the position of the sampling member 10 in the positioning frame body 30 is controlled, the adjustment ability of the piercing depth is realized, the excitation effect on the underground seed bank is indirectly optimized, the ecological restoration research in the land desertification and desertification area is facilitated, and through the modular design of the sampling member 10, the number and position of the piercing parts can be flexibly changed according to specific experimental requirements, the expansibility and adaptability of the device are improved; through the cooperation of the multiple components of the adjustable biological soil crust piercing device, the problem that the biological soil crust cannot be pierced with adjustable thickness in the related art is solved, and the accurate sampling of the crust with different thicknesses is realized, which provides an efficient and reliable solution for the quantitative analysis of the influence of crust thickness on the underground seed bank, and effectively fills the technical blank in the existing field.

[0062] Next, the adjustable biological soil crust piercing device in the utility model will be described in detail. Figures 1 to 6 The adjustable biological soil crust piercing device in the utility model will be described in detail.

[0063] In an embodiment of the utility model, as shown in the figure, Figure 5 The sampling member 10 can include a sampling cylinder body 11, a fixed boss 12 and a puncture tooth 13. Among them:

[0064] The sampling cylinder body 11 can be designed as a hollow cylindrical structure, for example, the sampling cylinder body 11 can be a rectangular cylinder, or a circular cylinder, or a polygonal cylinder, etc., which is not limited in the embodiment. The sampling cylinder body 11 is used to accommodate the biological soil crust sample after being pierced, and the outer wall is designed to be smooth to reduce the resistance in contact with the crust during piercing. The material of the sampling cylinder body 11 can be selected from high-strength metal materials, for example, the material of the sampling cylinder body 11 can be selected from stainless steel or hard alloy, so as to ensure sufficient strength and wear resistance when piercing the crust with large thickness, and prevent the cylinder from deforming or being damaged; the inside of the sampling cylinder body 11 is designed to be open, which is convenient for collecting and storing the crust sample after being pierced.

[0065] The fixed boss 12 can be arranged at one end of the sampling cylinder body 11 and fixedly connected with the sampling cylinder body 11, for example, the fixed boss 12 can be fixedly connected with the sampling cylinder body 11 by welding, or by one-piece forming, or by threaded connection, which is not specially limited in the embodiment. The outer diameter of the fixed boss 12 can be greater than the outer diameter of the sampling cylinder body 11, so that it can be stably lapped on the fixed position of the sampling fixing device 20. The thickness and height of the fixed boss 12 only need to ensure that it will not fall off or displace during installation and piercing operation, and facilitate quick disassembly and assembly of the device, which is not limited in the embodiment. The outer surface of the fixed boss 12 can be provided with anti-slip lines or other structures for increasing friction, to further improve the fixing reliability.

[0066] The piercing teeth 13 can be arranged at the other end of the sampling cylinder body 11 and integrally connected with the sampling cylinder body 11; the piercing teeth 13 are the key part for piercing the biological soil crust, and their shape and distribution need to be accurately designed. The number of the piercing teeth 13 can be set according to experimental requirements, for example, the piercing teeth 13 can be three teeth, four teeth or multiple teeth, and the tooth shape can be sawtooth-shaped, pointed cone-shaped or double-blade-shaped, to achieve efficient piercing of crust structures with different thicknesses, and the number and tooth shape of the piercing teeth 13 are not specially limited in the embodiment. The length of the piercing teeth 13 can be adapted to the thickness range of the biological soil crust in the sampling site, which can pierce the surface crust and avoid damaging the underlying soil structure. The spacing between the piercing teeth 13 can be uniformly distributed to ensure that the piercing effect covers the entire sampling area, and the sampling cylinder body 11 forms a complete sample accommodating channel.

[0067] After the puncture tooth 13 punctures the biological soil crust, part of the biological soil crust remains inside the sampling cylinder body 11, forming a stable sample storage state. The opening edge inside the sampling cylinder body 11 can be provided with a fine tooth or a micro-arc structure to further fix the sample and prevent it from falling off due to vibration or external force during puncture. To facilitate the removal of the sample, the inner wall of the sampling cylinder body 11 can be treated with a low-friction coating or smoothing to reduce the adhesion of the sample to the inner wall of the cylinder.

[0068] Through the interaction of the various components of the sampling device 10 and their interaction, the device can achieve efficient and stable puncture and sample collection functions in different scenarios, and through flexible modular design, the convenience and adaptability of puncture or sampling operation are improved.

[0069] In an optional embodiment, continuing to refer to Figure 5 As shown, the sampling cylinder body 11 can include a strip-shaped observation window 111 and a measurement scale stripe 112. Among them:

[0070] The strip-shaped observation window 111 is provided on the side wall of the sampling cylinder body 11; the strip-shaped observation window 111 can be arranged along the axial direction of the sampling cylinder body 11, covering a major part of the length of the cylinder, so that the retention of the sample inside the cylinder can be observed directly after puncture is completed. The width of the strip-shaped observation window 111 needs to be designed to balance the field of view and structural strength, so as to ensure clear observation without affecting the overall pressure resistance of the cylinder.

[0071] The edge of the strip-shaped observation window 111 is finely processed, and the edge part can adopt an arc transition to reduce the risk of scratching the user during operation. The transparent part of the observation window can directly use the material of the cylinder, or be completed by embedding a transparent material such as high-pressure resistant glass or polycarbonate, which can have high light transmission and impact resistance to ensure the durability and safety of the device. The strip-shaped observation window 111 can be flexibly adjusted in position according to experimental requirements, for example, it can be a single-sided window, a symmetrical double-sided window, or a multi-lateral distributed window form to adapt to the observation requirements in different scenarios.

[0072] The measurement scale stripe 112 can be arranged on the side of the strip-shaped observation window, used for observing and measuring the thickness of the biological soil crust retained inside the sampling cylinder body. The measurement scale stripe 112 is arranged in a uniform distribution, and the scale interval is designed according to the experimental accuracy requirement, such as being divided in millimeters, with clear markings and preventing wear due to long-term use. The measurement scale stripe 112 can be formed by laser etching or spraying, and the coating material thereof needs to have wear resistance and corrosion resistance to adapt to the use conditions in complex outdoor environments. The color of the measurement scale stripe can be contrasted with the background, for example, black scale can be matched with silver background to ensure clear reading under different lighting conditions.

[0073] The combination of the sampling cylinder body 11, the strip-shaped observation window 111 and the measurement scale stripe 112 constitutes a functionally integrated sampling and measurement assembly. The strip-shaped observation window 111 facilitates quick confirmation of the sample state, and the measurement scale stripe 112 further improves the accuracy and reproducibility of experimental data. After the biological soil crust is pierced, the morphology and distribution of the sample can be observed through the window, and the thickness of the crust can be accurately measured with the aid of the scale stripe, avoiding the cumbersome operation of additional measurement equipment in traditional methods; the overall assembly is designed with modularity and refinement as the core, which can adapt to the sampling needs of crusts of different thicknesses and provide intuitive basis for recording and analyzing experimental data after piercing. Through the supporting effect of the cylinder body, the visualization function of the observation window and the quantitative measurement capability of the scale stripe, the parts form close cooperation to ensure the efficiency and reliability of the device in sample collection, observation and measurement, thereby meeting the use requirements in various experimental scenarios.

[0074] In an embodiment of the present application, as shown in Figure 1 、 Figure 2 and Figure 4 , the sampling fixing device 20 can include a positioning plate 21 and a pressing plate 22, which are designed as a whole to provide stable fixation and position support for the sampling member 10. Among them:

[0075] The positioning plate 21 is arranged in the positioning frame body 30, and a plurality of fixed positions are uniformly distributed thereon. Each fixed position is a placing port 211 opened on the positioning plate 21, the sampling member 10 partially passes through the placing port 211, and the fixed boss 12 of the sampling member 10 is lapped in the placing port 211. The placing port 211 is used to accommodate and support the fixed boss 12 of the sampling member 10. The shape and size of the placing port 211 can match the shape of the fixed boss 12, which is usually circular, rectangular or polygonal structure, to ensure that the fixed boss 12 can be firmly embedded, and in some embodiments, a certain degree of free rotation can be allowed to adjust the direction of the sampling member 10. The material of the positioning plate 21 can have high strength and corrosion resistance, and metal alloy or high polymer composite material is preferably used to adapt to the external force impact and environmental changes that may occur during the experiment.

[0076] The edge of the placing port 211 can be reinforced, for example, the wear resistance can be enhanced by thickening or embedding a metal ring, to avoid wear or deformation caused by long-term use. The uniform distribution of the plurality of fixed positions helps to realize multi-point synchronous sampling in the sample plot, and the spacing between the placing ports 211 can be designed according to the size of the sampling member 10 and the experimental requirements, to balance the uniformity of sample distribution and the convenience of operation.

[0077] The pressing plate 22 can be arranged on the positioning plate 21 close to the fixed boss 12, and the other side is in abutment with the puncture thickness adjusting device 40, and the positioning plate 21 clamps the fixed boss 12 together to fix the sampling piece 10 in the placement port 211. The material of the pressing plate 22 can be the same as or similar to that of the positioning plate 21, which has sufficient rigidity to withstand external force during operation. The size of the pressing plate 22 can cover most of the positioning plate 21, but a certain activity space is left to facilitate the adjustment of the puncture depth. The inner surface of the pressing plate 22 can be provided with a buffer material such as a rubber or silicone pad, which is used to reduce the pressure concentration on the fixed boss 12 of the sampling piece 10 and prevent the sampling piece from loosening due to vibration or impact.

[0078] The connection between the pressing plate 22 and the positioning plate 21 can be realized through the puncture thickness adjusting device 40, and the connection mode can include direct contact or pressure transmission through intermediate parts. The pressing plate 22 and the positioning plate 21 need to maintain a parallel relationship when clamping the fixed boss 12 to ensure that each fixed position is uniformly stressed, and the outer edge of the pressing plate 22 can be designed to increase the operation handle or adjustment hole to facilitate the installation and adjustment of the device.

[0079] The combination of the positioning plate 21 and the pressing plate 22 not only provides stable support for the sampling piece 10, but also realizes flexible control of the puncture depth of the sampling piece 10 through the adjustment of the puncture thickness adjusting device 40, thereby adapting to the sampling needs of biological soil crusts of different thicknesses. The overall modular design of the sampling fixing device 20 makes it easy to install, disassemble and clean, while having high adaptability and reliability; through the multi-point distribution function of the positioning plate 21 and the clamping action of the pressing plate 22, the sampling fixing device 20 ensures that the sampling piece 10 is always in a stable state during the working process, avoiding sample collection failure caused by external interference; the rationality of the structure and the durability of the material together guarantee the long-term use performance of the device, meeting the needs of diversified experimental scenes.

[0080] In an embodiment of the present application, as shown in Figures 1 to 4 , Figure 6 The puncture thickness adjusting device 40 can include a bottom plate 41, a fixed plate 42 and a pressing screw 43. Among them:

[0081] The bottom plate 41 can be arranged on the side of the pressing plate 22 away from the positioning plate 21, abutting against the pressing plate 22, and the bottom plate 41 can include a positioning hole 411. The bottom plate 41 is arranged below the pressing plate 22, can have a flat plate structure, and can be made of a metal material with high strength and corrosion resistance, such as stainless steel or aluminum alloy, to ensure that it does not deform or break when subjected to external force. The surface of the bottom plate 41 is designed as a smooth surface to reduce friction when in contact with the pressing plate 22. The bottom plate 41 has a positioning hole 411 formed therein for receiving the end of the pressing screw 43 to form a fixed fulcrum. The diameter of the positioning hole 411 can match the size of the end of the pressing screw 43 to ensure that the pressing screw 43 remains stable during adjustment.

[0082] The fixed plate 42 is arranged between the two side plates 31 of the positioning frame body 30 and is fixedly connected to the opposite two side plates 31 of the positioning frame body 30 at both ends to provide connection and support for the pressing screw 43. The fixed plate 42 can include a screw hole 421. The two ends of the fixed plate 42 can be fixedly connected to the opposite two side plates 31 of the positioning frame body by screws, welding or buckling. The surface of the fixed plate 42 has a screw hole 421 formed therein for cooperating with the threaded segment 431 of the pressing screw 43. The machining precision of the screw hole 421 needs to meet the requirement of smooth rotation of the pressing screw 43, and the depth and density of the screw thread need to match the threaded segment 431 of the pressing screw 43 to ensure the firmness of the connection and the smoothness of the adjustment. The thickness of the fixed plate 42 can be designed to withstand the impact force during piercing, and reinforcing ribs 423 can be arranged on the surface of the fixed plate 42 to improve the overall rigidity and reduce the influence of vibration on the adjustment accuracy.

[0083] The pressing screw 43 can include a threaded segment 431 and a rotary handle 432. The threaded segment 431 is arranged at one end of the pressing screw 43, and the other end is provided with a rotary handle 432. The pressing screw 43 can be fixedly connected to the fixed plate 42 through the threaded segment 431 and the screw hole 421, and the end of the threaded segment 431 abuts in the positioning hole 411.

[0084] The pressing screw 43 is the core component of the adjustment mechanism. One end of the pressing screw 43 is a threaded segment 431 that cooperates with the screw hole 421 of the fixed plate 42 to achieve precise adjustment. The other end is provided with a rotary handle 432 for applying a rotary force to adjust the distance between the bottom plate 41 and the fixed plate 42. The threaded segment 431 of the pressing screw 43 has high machining quality, and the pitch and number of threads can be designed according to the adjustment requirements to realize the dual functions of fine adjustment and rapid adjustment. The rotary handle 432 can have an ergonomic design, and the surface can have anti-slip texture or be coated with rubber material to improve the comfort and torque output efficiency of user operation. The material of the pressing screw 43 can have high strength, wear resistance and fatigue resistance to meet the scene requirements of multiple adjustments and high-frequency use.

[0085] The end of the threaded section 431 of the pressing screw 43 is in direct contact with the positioning hole 411 of the bottom plate 41, and the distance between the bottom plate 41 and the fixed plate 42 is adjusted by rotating the pressing screw 43, so as to change the position of the sampling fixing device 20. The relationship between the rotating direction of the pressing screw 43 and the adjustment result needs to be marked on the device, for example, a direction arrow or a scale mark can be provided to provide intuitive operation guidance for the user.

[0086] The height-integrated piercing thickness adjusting device 40 is formed by the combination of the bottom plate 41, the fixed plate 42 and the pressing screw 43, the space relationship between the bottom plate 41 and the fixed plate 42 is controlled by the precise rotation adjustment of the pressing screw 43, and effective support is provided for the dynamic position adjustment of the positioning plate 21 and the pressing plate 22; the modular design allows quick disassembly and replacement of parts, adapts to the piercing needs of biological soil crusts of different thicknesses, has high reliability and durability, and provides precise adjustment guarantee for the operation of the whole device.

[0087] In an embodiment of the utility model, the two ends of the fixed plate 42 can be stepped faces 422, and the fixed plate 42 can be fixedly connected with the side plate 31 through the stepped faces 422 and the locking piece. The stepped faces 422 are in contact with the inner surface of the side plate 31 in a stepped structure, and the contact area is increased through the hierarchical design of the steps, so as to improve the positioning accuracy of the fixed plate 42 during installation. The stepped faces 422 can be formed by casting or mechanical processing, to ensure that the surface flatness and dimensional accuracy meet the assembly requirements. The two ends of the fixed plate 42 can be fixedly connected with the side plate 31 of the positioning frame body 30 through the locking piece, and the locking piece can be selected from structures such as screws, buckles or spring clamps, which need to have high strength and corrosion resistance to adapt to long-term use under high load conditions. The locking piece can form multi-point support when combined with the stepped face of the fixed plate 42, further improving the anti-vibration ability of the whole device.

[0088] The fixed plate 42 can maintain a vertical relationship with the side plate 31 after being connected, to ensure that the piercing thickness adjusting device 40 can accurately adjust the position of the sampling fixing device 20 during work. The installation position of the locking piece can be limited by the pre-set hole position, and the gap between the locking piece and the fixed plate 42 needs to be accurately calculated to ensure the movement range and stability of the fixed plate 42. The combination of the stepped face 422 and the locking piece forms a reliable support structure under stress, so that the fixed plate 42 will not shift or loosen during the piercing thickness adjustment process, thereby providing structural guarantee for the efficient operation of the device.

[0089] In an embodiment of the present application, the pressing screw 43 can include a rotary handle 432, which is arranged on the pressing screw 43 at an end away from the threaded segment 431, and is used to provide a rotary force and a pressing force on the adjustable biological soil crust piercing device, so as to provide a user with a greater operating torque to achieve accurate adjustment. The rotary handle 432 can have a T shape, a cross shape or a wheel shape, and the shape is optimized according to ergonomics to improve the user's gripping comfort and operating stability. The outer surface of the rotary handle 432 can be provided with anti-slip textures or coated with rubber materials, so as to still provide good gripping force under the condition of wet hands or poor environment.

[0090] The rotary handle 432 is integrally formed with the threaded segment 431 through the pressing screw 43, or is fixed to the screw rod by welding and threaded connection, and the connection part needs to have high structural strength to avoid damage caused by stress concentration during operation. The length of the rotary handle 432 needs to be accurately designed, and the diameter or width needs to provide sufficient operating radius to reduce the torque applied by the user, while not affecting the movement range of other components. The end of the rotary handle 432 can be designed as a smooth arc to avoid injury to the user due to excessive force. The use of the rotary handle 432 effectively simplifies the adjustment operation process of the device and improves the piercing thickness adjustment efficiency and accuracy.

[0091] In an embodiment of the present application, the inner wall of the positioning frame body 30 is provided with an elastic device (not shown in the figure), and the positioning plate 21 can be provided with a resilient force by the elastic device when placed in the inside of the positioning frame body 30. The direction of the resilient force is the direction approaching the piercing thickness adjustment device 40. The elastic device can be a spring, a rubber pad or other elastic materials, and the setting position needs to correspond to the stress point of the positioning plate to ensure that the resilient force can be uniformly applied. The elastic coefficient of the elastic device can be optimized according to the pressure range of the piercing operation, which can provide sufficient resilient force and will not hinder the normal movement of the device. The elastic device can be connected to the inner wall of the positioning frame body 30 by embedding, pasting or screwing, and the end part can be designed as a spherical or arc surface to increase the stress area, thereby reducing wear and stress concentration. The elastic device can quickly reset the positioning plate to the initial position after the piercing operation is completed, avoiding displacement accumulation or deformation of the positioning plate 21 due to long-term stress. The durability of the elastic device needs to meet the high-frequency operation requirement, and a protective coating can be added to the surface to improve the corrosion resistance and service life.

[0092] In an embodiment of the present application, the two ends of the side plate 31 can include a fixed buckle 311, and the two side plates 31 can be fixedly connected through the fixed buckles 311 to form a rectangular positioning frame body 30. The fixed buckle 311 can be a buckle, a zipper or a hinge structure, and the material thereof needs to have excellent toughness and durability, such as engineering plastics or metal alloys. The combination mode of the fixed buckle 311 and the side plate 31 can adopt an embedded mode or a threaded connection, and the connection part needs to be reinforced to avoid loosening or falling off due to long-term use.

[0093] The shape and size of the fixed buckle 311 can be accurately matched with the interface part of the side plate 31, and the closed state thereof needs to be able to completely lock the side plate to form the rectangular positioning frame body 30. The closing and loosening of the fixed buckle 311 can be realized through simple manual operation to facilitate the quick disassembly and maintenance of the device. The design of the fixed buckle 311 also needs to consider the spatial relationship with other components to avoid interference with the operation of the device due to the protruding part of the fixed buckle 311 during the operation process.

[0094] In an optional embodiment, a thickness scale stripe is arranged on the inner wall of the side plate 31. The thickness scale stripe serves to provide an intuitive reference for the adjustment of the piercing thickness, and the markings of the scale stripe are based on millimeters or other precision units, and the distribution thereof needs to be uniform and clear. The font and lines are formed by using a non-fading paint or a laser etching technology to ensure the visibility during long-term use. The position of the scale stripe can correspond to the adjustment range of the piercing thickness adjustment device 40, and the maximum scale and the minimum scale should cover the possible piercing depth range of the sampling fixing device 20.

[0095] The color of the thickness scale stripe can be contrasted with the inner wall of the side plate 31, such as the combination of black scale and silver side plate background, to ensure that it can be clearly read under different lighting conditions. The scale stripe can be used in cooperation with an auxiliary scale to provide more accurate adjustment basis for the user. The layout of the scale stripe needs to consider the curved surface structure of the side plate 31, and the visual error is avoided through adhesion or segmented design, so as to improve the reading accuracy. Through the combination of the thickness scale stripe and the piercing thickness adjustment device 40, the adjustment operation of the device becomes more intuitive and efficient, reduces the operation complexity of the user, and improves the accuracy and repeatability of the experimental results.

[0096] It should be appreciated that the present application is not limited to the details of construction and arrangement of the components set forth in the description of the application. The present application is capable of other embodiments and of being practiced or being carried out in various ways. Variations and modifications of the described embodiments are considered to be within the scope of the present application. It should be understood that the present application is well suited to accomplishing the objects and advantages described above, and those that are too numerous to be mentioned, and the application encompasses those resulting from non- limiting combinations and sub-combinations of the elements found in the detailed description.

Claims

1. An adjustable biological soil crust puncture device, characterized in that, include: At least one sampling device is used to puncture and collect the biological soil crust; A sampling and fixing device includes multiple evenly distributed fixing positions, which are used to place and fix the sampling piece; The positioning frame body is formed by four side plates, and the sampling fixing device is set inside the positioning frame body and can move relative to the axis of the positioning frame body. The puncture thickness adjustment device is detachably connected to one side of the positioning frame body and is used to adjust the position of the sampling fixing device in the positioning frame body. The puncture thickness adjustment device adjusts the position of the sampling fixing device in the positioning frame body to control the protrusion length of the sampling piece from the side of the positioning frame body away from the puncture thickness adjustment device, thereby adjusting the puncture thickness of the biological soil crust.

2. The adjustable biological soil crust puncture device according to claim 1, characterized in that, The sampled items include: Sampling cylinder body; A fixed boss is provided at one end of the sampling cylinder body and is fixedly connected to the sampling cylinder body; The puncture teeth are located at the other end of the sampling cylinder body and are integrally formed and connected to the sampling cylinder body. After the piercing teeth puncture the biological soil crust, a portion of the biological soil crust remains inside the sampling tube body.

3. The adjustable biological soil crust puncture device according to claim 2, characterized in that, The sampling cylinder body includes: A strip-shaped observation window is provided on the side wall of the sampling tube body; Measuring scale stripes are set around the periphery of the bar-shaped observation window to observe and measure the thickness of the biological soil crust remaining inside the sampling tube body.

4. The adjustable biological soil crust puncture device according to claim 1, characterized in that, The sampling and fixing device includes: The positioning plate has multiple fixed positions evenly distributed on it. The fixed positions are placement openings opened on the positioning plate. The sampling element partially passes through the placement opening and is attached to the placement opening by the fixing boss of the sampling element. A pressure plate is positioned on one side of the positioning plate near the fixed protrusion, and the other side abuts against the puncture thickness adjustment device. Together with the positioning plate, the pressure plate clamps the fixed protrusion to fix the sample in the placement opening.

5. The adjustable biological soil crust puncture device according to claim 4, characterized in that, The puncture thickness adjustment device includes: A base plate is disposed on the side of the pressure plate away from the positioning plate and abuts against the pressure plate; the base plate includes positioning holes. The fixing plate has two ends that are fixedly connected to the opposite side plates of the positioning frame body, including screw holes; A pressing screw, including a threaded section, is disposed at one end of the pressing screw. The pressing screw is fixedly connected to the fixing plate through the threaded section and the threaded hole, and the end of the threaded section abuts in the positioning hole. The pressing screw adjusts the distance between the plane of the fixing plate and the base plate through the screw hole and the threaded section, thereby adjusting the position of the sampling fixing device in the positioning frame body.

6. The adjustable biological soil crust puncture device according to claim 5, characterized in that, The two ends of the fixing plate are stepped surfaces, and the fixing plate is fixedly connected to the side plate through the stepped surfaces and locking components.

7. The adjustable biological soil crust puncture device according to claim 5, characterized in that, The pressing screw includes a pressing handle disposed at one end of the pressing screw away from the threaded section, for providing rotational force and pressing force on the adjustable biological soil crust piercing device.

8. The adjustable biological soil crust puncture device according to claim 5, characterized in that, An elastic device is provided on the inner wall of the positioning frame body. When the positioning plate is placed inside the positioning frame body, the elastic device provides a rebound force. The direction of the rebound force is close to the direction of the puncture thickness adjustment device.

9. The adjustable biological soil crust puncture device according to claim 1, characterized in that, The side panels have fixing buckles at both ends, and the side panels are fixedly connected to each other through the fixing buckles to form a rectangular positioning frame body.

10. The adjustable biological soil crust puncture device according to claim 9, characterized in that, The inner wall of the side plate is provided with thickness scale stripes.

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