Multifunctional portable geological exploration soil sampler

Abstract

The invention relates to a multifunctional portable geological exploration soil sampler which comprises a soil sampling head, a connecting rod, a guide sleeve, a movable rod and a weighting rod, the soil sampling head is detachably connected to one end of the connecting rod, the other end of the connecting rod is movably sleeved with the guide sleeve, the guide sleeve can reciprocate in the axial direction of the connecting rod, a limiting structure is arranged between the guide sleeve and the connecting rod, and one end of the movable rod is detachably connected to the end, away from the soil sampling head, of the guide sleeve. The weighting rod is detachably connected to the other end of the movable rod. The multifunctional portable geological prospecting soil sampler is convenient to use, soil sampling can be achieved only by inserting the soil sampler into a hole position and continuously operating the weighting rod in the vertical direction, other extra power devices are not needed, overall operation is simple and reliable, all parts are detachable, and when transportation or carrying is needed, the multifunctional portable geological prospecting soil sampler is convenient to use. All the parts can be detached, and the situation that transportation is not changed due to the fact that the overall length is large is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of geological prospecting soil samplers, in particular to a multifunctional portable geological prospecting soil sampler. Background Art

[0002] "Geological exploration" refers to the investigation and research activities that use various means and methods to survey and detect geology, determine the appropriate bearing layer, determine the foundation type according to the bearing capacity of the bearing layer, and calculate the foundation parameters. It is to discover industrially significant mineral deposits during the mineral survey, to ascertain the quality and quantity of minerals, as well as the technical conditions for mining and utilization, and to provide the mineral reserves and geological data needed for mine construction design. It is to investigate and study the geological conditions such as rocks, strata, structures, minerals, hydrology, and landforms in a certain area. In geological exploration, it is necessary to use a soil sampler to sample and test the soil in the exploration area.

[0003] There are many kinds of equipment or devices for soil sampling on the market, but they all have different disadvantages. For example: 1. Soil sampling is carried out by drilling holes in the mountains with drilling equipment, but the drilling equipment is difficult to carry and maintain, has high cost, and requires power supply, and cannot be sampled in places without power supply; 2. Sampling is carried out with Luoyang shovel and probe, but this method cannot take cores and the exploration depth is insufficient; 3. Sampling is carried out with backpack drill, but the backpack drill is large and inconvenient for individuals to carry, and sampling is impossible without water source and power supply.

[0004] Based on this, it is necessary to design a soil collecting device that is easy to carry and use. Summary of the invention

[0005] Based on this, the purpose of the present invention is to overcome the deficiencies of the prior art and provide a multifunctional portable geological prospecting soil sampler.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A multifunctional portable geological prospecting soil sampler, comprising:

[0008] Soil collecting head, connecting rod, guide sleeve, movable rod and weighting rod;

[0009] The soil-taking head is detachably connected to one end of the connecting rod. The guiding sleeve is movably sleeved on the other end of the connecting rod. The guiding sleeve can reciprocate axially along the connecting rod. A limiting structure is arranged between the guiding sleeve and the connecting rod. The limiting structure is used to prevent the guiding sleeve from disengaging from the connecting rod in the direction away from the soil-taking head. One end of the movable rod is detachably connected to the end of the guiding sleeve away from the soil-taking head. The interior of the movable rod is hollow for the connecting rod to extend into. The weighting rod is detachably connected to the other end of the movable rod.

[0010] As an implementation manner, the weighting rod includes a plurality of rod bodies and a plurality of universal joints. The plurality of rod bodies are arranged in sequence along their axial directions. The ends of adjacent two rod bodies are connected by one of the universal joints.

[0011] As an implementation manner, the universal joint includes a first universal joint fork, a second universal joint fork and a cross shaft. The first universal joint fork is connected to the second universal joint fork through the cross shaft. A movable fixing component is arranged on the first universal joint fork. When the axes of the first universal joint fork and the second universal joint fork are parallel, the fixing component can move to a fixed position to fix the first universal joint fork and the second universal joint fork.

[0012] As an implementation manner, the fixing component is a fixing sleeve. When the fixing sleeve moves to the fixed position, the fixing sleeve covers the outside of the fork parts of the first universal joint fork and the second universal joint fork.

[0013] As an implementation manner, the limiting structure includes a limiting ring and a limiting protrusion. The limiting ring is arranged at one end of the guiding sleeve close to the soil-taking head. The limiting protrusion is arranged at the other end of the connecting rod. The size of the limiting protrusion is larger than the inner diameter of the limiting ring. The inner peripheral wall of the limiting ring is fitted to the outer peripheral wall of the connecting rod.

[0014] As an implementation manner, the soil-taking head is threadedly connected to the connecting rod through a connecting disc. The connecting disc and the soil-taking head are detachably connected by a wing screw.

[0015] As an implementation manner, the soil-taking head is of a cylindrical or shovel-shaped structure.

[0016] As an implementation manner, a soil-shoveling edge is arranged on the soil-taking head.

[0017] As an implementation manner, the material of the soil-taking head is high manganese alloy steel.

[0018] As an implementation manner, a pressure sensor and a distance sensor are arranged on the top of the connecting disc.

[0019] The multi-functional portable soil sampler of the present application is convenient to use. Simply insert the soil sampler into the hole position and continuously operate the weight rod in the vertical direction to achieve soil sampling. No other additional power device is required. The overall operation is simple and reliable, and all parts are detachable. When transportation or handling is needed, each part can be disassembled to avoid inconvenience in transportation due to the long overall length. It can be seen that the soil sampler of the present application has good portability. The soil sampler of the present application can take cores and samples. The diameter of the soil sampling head is 6-10 cm, which is convenient to carry. The exploration depth can reach 15-20 meters, and it can explore to the moderately weathered massive rock stratum. Compared with the prior art, its operation is simple, without the need for power supply or water source, and it is portable and reliable.

[0020] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0021] Figure 1 It is an exploded view of the soil sampler in the embodiment of the present application;

[0022] Figure 2 It is a structural schematic diagram of the assembled soil sampler in the embodiment of the present application;

[0023] Figure 3 It is a partial schematic diagram of the guide sleeve in cooperation with the limit structure in the embodiment of the present application;

[0024] Figure 4 It is a partial schematic diagram of the guide sleeve hammering the soil sampling head in the embodiment of the present application;

[0025] Figure 5 It is a partial schematic diagram of the adjacent two rod bodies in the weight rod being parallel (removing the fixing components) in the embodiment of the present application;

[0026] Figure 6 It is a partial schematic diagram of the adjacent two rod bodies in the weight rod being inclined (removing the fixing components) in the embodiment of the present application;

[0027] Figure 7 It is a partial schematic diagram of the fixing component in the initial position in the embodiment of the present application;

[0028] Figure 8 It is a partial schematic diagram of the fixing component in the fixed position in the embodiment of the present application;

[0029] Figure 9 It is an exploded view of the soil sampling head, connecting plate and connecting rod in the embodiment of the present application;

[0030] Explanation of the Reference Numerals:

[0031] 1. Soil head; 11. Shoveling blade; 2. Connecting rod; 3. Guide sleeve; 4. Movable rod; 5. Weight rod; 51. Rod body; 52. Universal joint; 521. First universal joint fork; 522. Second universal joint fork; 5201. Fork part; 5202. Shaft part; 5203. Positioning ring; 523. Cross shaft; 53. Fixed part; 23. Limit structure; 231. Limit ring; 232. Limit protrusion; 6. Connecting plate; 61. Wing nut. Detailed implementation mode

[0032] To further illustrate each embodiment, the present invention provides drawings. These drawings are part of the disclosure of the present invention, mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Embodiment 1:

[0035] Please refer to Figures 1 to 9 , this embodiment provides a multi-functional portable geological exploration soil sampler, which includes: a soil head 1, a connecting rod 2, a guide sleeve 3, a movable rod 4, and a weight rod 5 arranged in sequence from bottom to top.

[0036] As Figures 1 - 4 shown, the soil head 1 is detachably connected to one end of the connecting rod 2. The function of the soil head 1 is to insert into the soil to take soil samples, and it can have various settings. For example, it can be a shovel-shaped structure or a cylindrical structure, and the user can replace it according to actual needs. In this embodiment, the soil head 1 is a cylindrical structure. The cylindrical soil head 1 can ensure the integrity of the soil after sampling and is not easy to fall off. Specifically, the cylindrical structure is a structure with one end open and the other end closed. The soil head 1 and the connecting rod 2 can adopt a detachable connection method of threaded connection, which is convenient for replacing the soil head 1 and can also ensure the integrity of sampling. The soil sampled by the soil head 1 can be directly taken for testing by simply disassembling the soil head 1.

[0037] The guiding sleeve 3 is movably sleeved on the other end of the connecting rod 2. The guiding sleeve 3 can reciprocate axially along the connecting rod 2. The guiding sleeve 3 can be fitted to the outer peripheral wall of the connecting rod 2, so as to move axially along the connecting rod 2 to guide the movement of the movable rod 4 and the weighting rod 5. The guiding sleeve 3 moves to a position close to the soil sampling head 1. A limiting structure 23 is provided between the guiding sleeve 3 and the connecting rod 2. Specifically, the limiting structure 23 can prevent the guiding sleeve 3 from disengaging from the connecting rod 2 in the direction away from the soil sampling head 1 (i.e., the upward direction). The movement of the guiding sleeve 3 in the direction close to the soil sampling head 1 is not restricted by the limiting structure. During disassembly, after the soil sampling head 1 is disassembled from the connecting rod 2, the guiding sleeve 3 can be slid out in the direction close to the soil sampling head 1.

[0038] One end of the movable rod 4 is detachably connected to the end of the guiding sleeve 3 away from the soil sampling head 1. The inside of the movable rod 4 is hollow for the connecting rod 2 to extend into. The weighting rod 5 is detachably connected to the other end of the movable rod 4. It can be understood that the movable rod 4 and the weighting rod 5 can reciprocate axially along the connecting rod 2 following the guiding sleeve 3. The inside of the movable rod 4 is hollow. When moving axially along the connecting rod 2, the connecting rod 2 can extend into the movable rod 4, thus increasing the movement stroke. The weighting rod 5 has a relatively large weight and can play a role in increasing the impact force, making it more labor-saving and convenient for users to operate. In this embodiment, both ends of the movable rod 4 are threadedly connected to the guiding sleeve 3 and the weighting rod 5 respectively, and the disassembly and assembly are simple.

[0039] One of the usage methods of the multifunctional portable geological exploration soil sampler of the present application is as follows:

[0040] At the position to be sampled, insert the soil sampling head 1 of the soil sampler towards the ground into the soil. Then hold the weighting rod 5 and continuously operate the weighting rod 5 reciprocally in the vertical direction. When operating the weighting rod 5 to move downward, the movable rod 4 and the guiding sleeve 3 can also move downward, so that the end of the guiding sleeve 3 hammers the end of the soil sampling head 1 (as Figure 4 shown), inserting the soil sampling head 1 deeper into the soil. When operating the weighting rod 5 to move upward, the movable rod 4 and the guiding sleeve 3 can also move upward, and the guiding sleeve 3 moves away from the soil sampling head 1 to store gravitational potential energy for the next hammering. Due to the existence of the weighting rod 5 with a relatively large weight, the gravitational potential energy that can be stored when moving it upward is greater, so that less effort is required for the user when moving it downward. The distance that the guiding sleeve 3 moves away from the soil sampling head 1 is restricted by the limiting structure 23, so the guiding sleeve 3 will not disengage from the connecting rod 2 (as Figure 3 shown). As can be seen from the above, by continuously operating the weighting rod 5 up and down, the guiding sleeve 3 can repeatedly hammer the soil sampling head 1, so that the soil sampling head 1 continuously penetrates into the soil to sample the soil. At this time, a hole is formed on the ground by the hammering of the soil sampling head 1.

[0041] After the soil collecting head 1 is filled with soil, the soil collecting device can be pulled out from the hole position, and the connecting rod 2 can be operated to move in the direction away from the guide sleeve 3. At this time, the soil collecting head 1 will also move with the connecting rod 2. Due to the existence of the limiting structure 23, the connecting rod 2 will be limited by the limiting structure 23 when it moves away from the guide sleeve 3 to the predetermined position. At this time, the movement of the connecting rod 2 and the soil collecting head 1 stops instantly, and the soil in the soil collecting head 1 is separated from the soil collecting head 1 due to inertia. Therefore, by continuously operating the connecting rod 2 to move back and forth, the soil in the soil collecting head 1 can be slowly separated from the soil collecting head 1, thereby obtaining soil and completing the soil collection at the depth of the hole position. Of course, the soil collecting head 1 filled with soil can also be completely disassembled from the connecting rod 2 and directly replaced with a new soil collecting head 1. The disassembled soil collecting head 1 can be sent to the detection site for detection.

[0042] After the soil of the soil sampling head 1 is cleared or a new soil sampling head 1 is replaced, the soil sampling device can be inserted into the formed hole again to perform soil sampling again until the required sampling depth is reached.

[0043] In the above-mentioned usage mode, the effect of vertical drilling can be achieved. Of course, it can be understood that, according to the actual situation, horizontal or inclined drilling can also be performed. That is to say, when in use, the soil sampling head 1 is aligned with the sampling position, and the weighting rod 5 is reciprocated horizontally or obliquely to achieve the same effect as the above-mentioned vertical drilling and sample the soil.

[0044] It can be seen from the above settings that the multifunctional portable geological exploration soil sampler of the present application is easy to use. It only needs to insert the soil sampler into the hole and continuously operate the weighting rod 5 in the vertical direction to achieve soil sampling. No other additional power device is required. The overall operation is simple and reliable, and all parts are detachable. When transportation or handling is required, the parts can be disassembled to avoid the instability of transportation due to the long overall length. It can be seen that the soil sampler of the present application is more portable. The soil sampler of the present application can be used for coring and sampling. The diameter of the soil sampling head 1 is 6-10cm, which is easy to carry. The exploration depth can reach 15-20 meters, and it can explore medium-weathered block rock layers. Compared with the existing technology, it is simple to operate, does not require power or water, and is portable and reliable.

[0045] The length of the weighting rod 5 can be designed according to actual needs to meet the exploration depth. The weighting rod 5 can also be set to multiple. When multiple weighting rods 5 are used, it may be more complicated to disassemble and assemble, and the use efficiency cannot be improved. Figures 1 - 6As shown, preferably, in this embodiment, the weight rod 5 includes multiple rod bodies 51 and several universal joints 52. The multiple rod bodies 51 are arranged in sequence along their axial directions, and the ends of adjacent two rod bodies 51 are connected by a universal joint 52. With the weight rod 5 arranged in this way, according to the usage requirements, an appropriate number of rod bodies 51 can be selected, and the universal joint 52 is used to connect between adjacent two rod bodies 51, so that adjacent two rod bodies 51 can rotate relative to each other in multiple directions. When it is necessary to store the weight rod 5, the multiple rod bodies 51 can be folded with each other, thus completing the storage, reducing the total length, and facilitating carrying and handling. The number of rod bodies 51 theoretically has no upper limit and can be increased or decreased specifically according to the actual usage scenario. Among them, the weight rod 5 is threadedly connected to the end of the movable rod 4 through the end of its first rod body 51 away from the universal joint 52, and when it is necessary to disassemble, the movable rod 4 can be directly screwed. It should be noted that for the convenience of carrying and using, the rod body of the weight rod 5 connected to the movable rod 4 is heavier than the other rod bodies, that is to say, the weight of the other rod bodies is relatively lighter, and the weight of the rod body connecting the movable rod is relatively heavier, so that the operation can be facilitated and it is more labor-saving during carrying.

[0046] Among them, the universal joint 52 can adopt the structure in the prior art. For example, the universal joint 52 includes a first universal joint fork 521, a second universal joint fork 522 and a cross shaft 523. The first universal joint fork 521 is connected to the second universal joint fork 522 through the cross shaft 523, thereby enabling the first universal joint fork 521 and the second universal joint fork 522 to rotate in any direction. As Figures 7 - 8 shown, both the first universal joint fork 521 and the second universal joint fork 522 have a shaft portion 5202 and a fork portion 5201. The fork portion 5201 is arranged on one side of the shaft portion 5202. The fork portion 5201 of the first universal joint fork 521 is connected to two opposite shafts of the cross shaft 523, and the fork portion 5201 of the second universal joint fork 522 is connected to the other two opposite shafts of the cross shaft 523, thus realizing universal rotation. The shaft portion 5202 of the first universal joint fork 521 is threadedly connected to the end of a rod body 51, and the shaft portion 5202 of the second universal joint fork 522 is threadedly connected to the end of another rod body 51.

[0047] To avoid the inconvenience caused by the relative movement of two adjacent rod bodies 51 during operation, preferably, in this embodiment, a movable fixing member 53 is provided on the first universal joint fork 521. When the axes of the first universal joint fork 521 and the second universal joint fork 522 are parallel, the fixing member 53 can move to a fixed position to fix the first universal joint fork 521 and the second universal joint fork 522. By setting it in this way, when the soil sampler extends into the hole to be sampled, as the depth increases, the rod bodies 51 enter the hole one by one. At this time, gradually move the corresponding fixing member 53 on the universal joint head about to enter the hole to the fixed position, so that the universal joint head is fixed, and the two rod bodies 51 connected to the universal joint head are relatively fixed, making it more convenient for users to use. It can be understood that when the soil sampler needs to be taken out, the rod bodies 51 are pulled out of the hole one by one. At this time, gradually move the corresponding fixing member 53 on the universal joint head coming out of the hole to the initial position, so that the two rod bodies 51 connected to the universal joint head can rotate relative to each other, which is convenient for storage.

[0048] Among them, the fixing member 53 can be set in various ways. Preferably, in this embodiment, the fixing member 53 is a fixed sleeve. When the fixed sleeve moves to the fixed position, the fixed sleeve covers the outer sides of the fork part 5201 of the first universal joint fork 521 and the fork part 5201 of the second universal joint fork 522, as Figure 8 shown, thereby restricting the rotation of the first universal joint fork 521 and the second universal joint fork 522. As Figure 7 shown, when the fixed sleeve is in the initial position, it is sleeved on the shaft part 5202 of the first universal joint fork 521, and the first universal joint fork 521 and the second universal joint fork 522 can rotate relative to each other. When the soil sampler is in use, the first universal joint fork 521 is located above the second universal joint fork 522, and the fixed sleeve can naturally fall to the fixed position under the action of gravity, thereby covering the outer sides of the fork part 5201 of the first universal joint fork 521 and the fork part 5201 of the second universal joint fork 522 to fix the first universal joint fork 521 and the second universal joint fork 522. The user manually moves the fixed sleeve to the initial position, so that the first universal joint fork 521 and the second universal joint fork 522 can rotate relative to each other. It can be understood that a positioning ring 5203 is provided on the shaft part 5202 of the second universal joint fork 522. When the fixed sleeve moves downward to the fixed position, it can be fixed by the positioning ring 5203 to avoid excessive displacement distance. Through the fixed sleeve set as above, it is convenient to use. When the user adjusts two adjacent rod bodies 51 to be in a parallel state, the axes of the first universal joint fork 521 and the second universal joint fork 522 connecting the two rod bodies 51 are parallel. At this time, the fixed sleeve can slide down to the fixed position under the action of gravity, so that the first universal joint fork 521 and the second universal joint fork 522 are fixed, and thus the two rod bodies 51 are relatively fixed, which is convenient for the user to operate.

[0049] In this embodiment, the limiting structure 23 can limit the guiding sleeve 3 from detaching from the connecting rod 2, and there can be various ways of setting it. Preferably, in this embodiment, the limiting structure 23 includes a limiting ring 231 and a limiting protrusion 232. The limiting ring 231 is arranged at one end of the guiding sleeve 3 close to the soil sampling head 1, and the limiting protrusion 232 is arranged at the other end of the connecting rod 2. The size of the limiting protrusion 232 is larger than the inner diameter of the limiting ring 231, and the inner peripheral wall of the limiting ring 231 is fitted to the outer peripheral wall of the connecting rod 2. By setting it in this way, the movement of the guiding sleeve 3 in the direction away from the soil sampling head 1 will be limited by the limiting protrusion 232, thereby preventing the guiding sleeve 3 from detaching from the connecting rod 2. The inner peripheral wall of the limiting ring 231 is fitted to the outer peripheral wall of the connecting rod 2, which can enable the guiding sleeve 3 to move along the axial direction of the connecting rod 2 and reduce the deviation of the movement. In this embodiment, the limiting protrusion 232 is a cylindrical structure arranged at the end of the connecting rod 2.

[0050] To avoid damage to the soil sampling head 1 caused by the direct hammering of the guiding sleeve 3 on the soil sampling head 1, as Figure 1 、 2 and shown in 9, preferably, in this embodiment, the soil sampling head 1 is threadedly connected to the connecting rod 2 through a connection plate 6. The connection plate 6 and the soil sampling head 1 are detachably connected by a wing screw 61. In this way, when the weight rod 5 is operated to move downward, the guiding sleeve 3 can make the soil sampling head 1 insert downward into the soil by hammering the connection plate 6. On the other hand, the connection plate 6 and the soil sampling head 1 are detachably connected by a wing screw 61, which can make the disassembly and assembly of the soil sampling head 1 more convenient.

[0051] Preferably, a soil shoveling edge 11 is arranged on the soil sampling head 1, and the soil shoveling edge 11 can be inserted into the soil more easily. Such a setting can make the user more labor-saving and more practical.

[0052] Preferably, the material of the soil sampling head 1 is manganese alloy steel. Manganese alloy steel is a high-strength steel, which is mainly used in harsh working conditions that need to withstand impact, extrusion, material wear, etc. Therefore, the soil sampling head 1 made of this material has good durability and is not easily damaged.

[0053] Embodiment Two:

[0054] The difference between this embodiment and the first embodiment is that a pressure sensor and a distance sensor are provided on the top of the connecting plate 6. By setting the distance sensor and the pressure sensor, it plays a role in real-time viewing of the sampling state of the soil sampling cylinder, achieving the improvement of the versatility of the sampler. Specifically, the connecting plate 6 is threadedly connected to the connecting rod 2 through the pressure sensor, and the distance sensor is arranged on the top of the connecting plate 6. It can be electrically connected to the pressure sensor and the distance sensor through an external detection device, so as to monitor the hammering force applied to the soil sampling head 1 in real time for each time, and monitor the reaction force generated by the back shock of the soil sampling head 1 in real time. Through this data, the distribution of the soil at a deeper depth can be indirectly obtained. For example, whether it is pure soil or mixed with sand and gravel. Different types of sand and gravel have different hardnesses and different reaction forces generated by back shock. Therefore, the general range of the types of sand and gravel can also be preliminarily judged. The distance sensor can synchronously monitor the downward displacement in real time, and the difficulty of sampling can be indirectly known according to the monitoring degree, so as to indirectly judge the moisture content and hardness of the soil.

[0055] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A multifunctional portable soil sampler for geological exploration, characterized in that, Comprising: A soil-taking head, a connecting rod, a guiding sleeve, a movable rod, and a weighting rod; The soil-taking head is detachably connected to one end of the connecting rod, the guiding sleeve is movably sleeved on the other end of the connecting rod, the guiding sleeve can reciprocally move along the axial direction of the connecting rod, a limiting structure is arranged between the guiding sleeve and the connecting rod, and the limiting structure is used to prevent the guiding sleeve from disengaging from the connecting rod in the direction away from the soil-taking head. One end of the movable rod is detachably connected to the end of the guiding sleeve far from the soil-taking head, the interior of the movable rod is hollow for the connecting rod to extend into, and the weighting rod is detachably connected to the other end of the movable rod.

2. The multi-functional portable geological exploration soil sampler according to claim 1, characterized in that: The weighting rod comprises a plurality of rod bodies and a plurality of universal joints. The plurality of rod bodies are arranged in sequence along their axial directions, and the ends of two adjacent rod bodies are connected by one of the universal joints.

3. The multi-functional portable geological exploration soil sampler according to claim 2, characterized in that: The universal joint comprises a first universal joint fork, a second universal joint fork, and a cross shaft. The first universal joint fork is connected to the second universal joint fork through the cross shaft. A movable fixing member is arranged on the first universal joint fork. When the axes of the first universal joint fork and the second universal joint fork are parallel, the fixing member can move to a fixed position to fix the first universal joint fork and the second universal joint fork.

4. The multi-functional portable geological exploration soil sampler according to claim 3, characterized in that: The fixing member is a fixing sleeve. When the fixing sleeve moves to the fixed position, the fixing sleeve covers the outside of the fork parts of the first universal joint fork and the second universal joint fork.

5. The multi-functional portable geological exploration soil sampler according to claim 1, characterized in that: The limiting structure comprises a limiting ring and a limiting protrusion. The limiting ring is arranged at one end of the guiding sleeve close to the soil-taking head, and the limiting protrusion is arranged at the other end of the connecting rod. The size of the limiting protrusion is larger than the inner diameter of the limiting ring, and the inner peripheral wall of the limiting ring is fitted to the outer peripheral wall of the connecting rod.

6. The multi-functional portable geological exploration soil sampler according to any one of claims 1-5, characterized in that: The soil-taking head is threadedly connected to the connecting rod through a connection plate, and the connection plate and the soil-taking head are detachably connected by a wing screw.

7. The multi-functional portable geological exploration soil sampler according to claim 6, characterized in that: The soil-taking head is of a cylindrical or shovel-shaped structure.

8. The multi-functional portable geological exploration soil sampler according to claim 7, characterized in that: A soil-shoveling edge is arranged on the soil-taking head.

9. The multi-functional portable geological exploration soil sampler according to claim 8, characterized in that: The material of the soil-taking head is manganese alloy steel.

10. The multi-functional portable geological exploration soil sampler according to claim 6, characterized in that: A pressure sensor and a distance sensor are arranged on the top of the connection plate.

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