Soil layer sampling device for geology

Abstract

The utility model discloses a geologic soil layer sampling device in the field of sampling equipment, which comprises a support frame and a sampling mechanism, a bottom plate is arranged at the bottom of a vertical column of the support frame, a through hole is arranged on the bottom plate, and a fixing mechanism is arranged above the bottom plate. The fixing mechanism comprises an inserting rod capable of penetrating through the through hole, a pedal fixed to the top of the inserting rod and a supporting spring supported between the pedal and the bottom plate, and in the natural state, the lower end of the inserting rod is located in the through hole through the elastic force of the supporting spring; a locking mechanism is fixedly connected to the side portion of the inserting rod and comprises a sliding piece connected with the stand column in a sliding mode and a fastening piece capable of being fixed to the stand column. Before sampling, a user can step on a pedal to press an insertion rod into soil, so that the support frame is fixed, and the stability of the whole device during sampling is ensured; and the locking mechanism can fix the insertion rod when the insertion rod is inserted in place or the insertion rod is retracted, so that the insertion stability when the equipment is fixed and the safety of the insertion rod when the equipment is retracted are ensured.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment, and in particular to a soil sampling device for geological applications. Background Technology

[0002] Geology refers to the properties and characteristics of the Earth, mainly including its material composition, structure, tectonics, and developmental history. This includes the Earth's strata differentiation, physical properties, chemical properties, rock properties, mineral composition, the occurrence and contact relationships of rock strata and rock masses, the Earth's tectonic development history, biological evolution history, climate change history, and the occurrence and distribution patterns of mineral resources.

[0003] When developing and constructing water conservancy and hydropower projects, it is necessary to conduct a geological survey of the surrounding area in advance. Currently, sampling devices are commonly used to collect soil samples, which are then taken back to the laboratory for geological analysis. There are many types of sampling devices available. For example, patent document CN 215811718 U discloses a soil sampling device for geology. This device includes a U-shaped plate with a hollow shaft inserted into its lower wall. A vertical shaft is installed inside the hollow shaft, with both ends extending upwards and downwards to the outside of the hollow shaft. A spiral blade is fitted onto the outer surface of the vertical shaft inside the hollow shaft, and a ratchet is fixedly connected to the end of the vertical shaft outside the hollow shaft. When the hollow shaft is located in the geological soil layer, rotating the rotating plate clockwise rotates the vertical shaft, which in turn rotates the spiral blade, allowing for soil sampling while ensuring the sample remains concealed.

[0004] The main drawback of this device is that it lacks auxiliary support devices, requiring the user to hold the device by hand during use, and manual sampling is time-consuming and laborious. Utility Model Content

[0005] To overcome the above-mentioned shortcomings of existing sampling equipment, the technical problem to be solved by this utility model is to provide a geological soil sampling device that is securely fixed and easy to use.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A soil sampling device for geological applications includes a support frame and a sampling mechanism mounted on the support frame. The support frame includes at least two columns, with a base plate fixedly connected to the bottom of each column. The base plate has through holes. A fixing mechanism is provided above the base plate. The fixing mechanism includes a rod that can pass through the through holes, a foot pedal fixed to the top of the rod, and a support spring supporting the rod between the foot pedal and the base plate. In its natural state, the elastic force of the support spring keeps the lower end of the rod within the through holes. A locking mechanism is fixedly connected to the side of the rod. The locking mechanism includes a sliding member that is slidably connected to the column and a fastener that can be fixed to the column.

[0008] Furthermore, the insertion rod includes a tapered section in the lower half and a cylindrical section in the upper half.

[0009] Furthermore, the fixing mechanism has three support springs between the foot pedal and the base plate, and the three support springs are arranged symmetrically about the axis of the insert rod.

[0010] Furthermore, the base plate is a rectangular plate with a through hole at each end along its length, and a set of fixing mechanisms is provided above each through hole.

[0011] Furthermore, the lower end of the column near the base plate is provided with a sliding groove extending along its axis. The sliding member of the locking mechanism slides through the sliding groove, and a connecting part with external threads is provided at one end passing through the sliding groove. The fastener is a nut that matches the connecting part. By tightening the nut, it is pressed and fixed against the outer wall of the column to achieve a fixed connection between the insertion rod and the column.

[0012] Furthermore, the column is provided with two sliding grooves, which are slidably connected to the sliding parts on the two inserts on the left and right sides respectively. The cross-section of the sliding groove is L-shaped with both ends penetrating the side wall of the column, and the two sliding grooves are symmetrically arranged around the axis of the column. The sliding parts are also L-shaped, and the connecting parts of the two sliding parts pass through the sliding grooves on the front and back of the column respectively.

[0013] Furthermore, the support frame includes a horizontally arranged crossbeam and two vertical columns fixed at both ends of the crossbeam. The sampling mechanism is installed in the middle of the crossbeam, and its axis is perpendicular to the length direction of the crossbeam.

[0014] Furthermore, the sampling mechanism includes an electric push rod and a sampling tube. The electric push rod is vertically fixed to the middle of the crossbeam, and its output end extends downward. The sampling tube is coaxially fixedly connected to the output end of the electric push rod, and the lower end of the sampling tube is an open structure.

[0015] Furthermore, the sampling tube has a bottom ring at its lower opening, the periphery of which has an annular cutting edge structure, and a sealing cap that can be snapped or threaded onto the bottom ring.

[0016] Furthermore, a push plate is coaxially slidably disposed inside the sampling tube, and the outer edge of the push plate forms a sealed sliding fit with the inner wall of the sampling tube; it also includes a push rod, and a sliding hole is provided at the center of the top of the sampling tube. The lower end of the push rod passes through the sliding hole and is fixedly connected to the push plate. A handle is provided at the upper end of the push rod outside the sampling tube.

[0017] The beneficial effects of this utility model are as follows: By setting a fixing mechanism consisting of an insertion rod, a foot pedal, and a support spring on the base plate of the support frame, the insertion rod can be pressed into the soil by stepping on the foot pedal before sampling to fix the support frame, eliminating the need to hold the equipment continuously and ensuring the stability of the entire device during sampling; in addition, by setting a locking mechanism between the insertion rod and the column of the support frame, the insertion rod can be fixed when it is inserted into place or retracted, ensuring the stability of the insertion when fixing the equipment, and preventing the sharp end of the insertion rod from being exposed and causing injury when retracting the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the fixing structure of this utility model;

[0020] Figure 3 This is a sectional view of the lower end of the column of this utility model;

[0021] Figure 4 This is a schematic diagram of the sampling tube of this utility model;

[0022] Figure 5 This is a schematic diagram of the lower end of the sampling tube of this utility model.

[0023] The diagram is labeled as follows: 1-support frame, 2-sampling mechanism, 3-fixing mechanism, 4-locking mechanism, 11-column, 12-base plate, 13-through hole, 14-slide groove, 15-crossbeam, 21-electric push rod, 22-sampling tube, 23-bottom ring, 24-sealing cover, 25-push plate, 26-push rod, 27-slide hole, 28-handle, 31-insertion rod, 32-pedal foot, 33-support spring, 41-sliding part, 42-fastener, 43-connecting part. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these are used to describe the relative positional relationships between components and are not specific references to the absolute positions of related components or the positional relationships between components. They are only used to explain the relative positional relationships and movement of components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity, such as "many," "multiple," or "several," these specifically refer to two or more.

[0026] like Figure 1 , Figure 2As shown, the present invention provides a soil sampling device for geology, comprising a support frame 1 and a sampling mechanism 2 disposed on the support frame 1. The support frame 1 includes at least two columns 11, and a base plate 12 is fixedly connected to the bottom of the columns 11. The base plate 12 has a through hole 13. A fixing mechanism 3 is provided above the base plate 12. The fixing mechanism 3 includes an insertion rod 31 that can pass through the through hole 13, a foot pedal 32 fixed to the top of the insertion rod 31, and a support spring 33 supporting the foot pedal 32 and the base plate 12. In the natural state, the elastic force of the support spring 33 keeps the lower end of the insertion rod 31 located in the through hole 13. A locking mechanism 4 is fixedly connected to the side of the insertion rod 31. The locking mechanism 4 includes a sliding member 41 that is slidably connected to the column 11 and a fastener 42 that can be fixed to the column 11. The sampling mechanism 2 can adopt any scheme disclosed in the prior art. The present invention mainly improves the support frame 1 that provides support for the sampling mechanism 2. Specifically, it ensures the stable connection between the base plate 12 and the ground soil by setting a fixing mechanism 3 and a locking mechanism 4. The through hole 13 penetrates the upper and lower surfaces of the base plate 12, and its inner diameter is close to the outer diameter of the insertion rod 31, so that when the insertion rod 31 is pressed down, the through hole 13 can guide and limit the insertion rod 31.

[0027] The usage process of this utility model is as follows: When sampling, first move the equipment to the sampling position, place the equipment on a flat ground using the base plate 12, then step on the foot pedal 32 and forcefully insert the insertion rod 31 into the soil. At the same time, the sliding member 41 overcomes the elastic force of the support spring 33 and slides downward along the column 11. After insertion, the sliding member 41 is locked and fixed to the column 11 by the fastener 42 to prevent the elastic force of the support spring 33 from causing the insertion rod 31 to retract. Then, follow the above process to insert all the insertion rods 31. Insert the rod into the soil and fix it in place to ensure stable installation of the equipment and stable sampling. After sampling, first loosen the fastener 42, then use your hand or a tool to pry the pedal 32 upwards. Under the elastic force of the support spring 33, the rod 31 returns to its initial position. At this time, the lower end of the rod 31 retracts into the through hole 13. Finally, fix the rod 31 to the column 11 with the fastener 42 to prevent the sharp part of the lower end of the rod 31 from being exposed and causing injury. After pulling all the rods 31 out of the soil and fixing them in place according to the above process, the equipment can be removed.

[0028] For the fixing mechanism 3, the present invention provides the following preferred solutions:

[0029] To improve the stability of the mounting structure of the insertion rod 31, three support springs 33 are provided between the foot pedal 32 of the fixing mechanism 3 and the base plate 12. The three support springs 33 are symmetrically arranged around the axis of the insertion rod 31, which can provide uniform support force for the foot pedal 32 and improve the stability of pressing the insertion rod 31.

[0030] To facilitate the insertion of the insertion rod 31 into the soil and ensure a stable connection, the insertion rod 31 includes a tapered lower section and a cylindrical upper section. The tapered section is used to break through the soil, while the cylindrical section ensures close contact with the surrounding soil, increasing friction.

[0031] To further increase the connection points between the base plate 12 and the soil, the base plate 12 can be configured as a rectangular plate with a through hole 13 at each end along its length. A set of fixing mechanisms 3 is correspondingly arranged above each through hole 13. Using multiple fixing mechanisms 3 to connect and fix to the soil increases the number of connection points, improves the stress balance of the base plate 12, and helps to enhance the stability of the support frame 1.

[0032] Regarding the specific structure of the locking mechanism 4, the preferred embodiment of this utility model is as follows: Figure 2 As shown, the lower end of the column 11 near the base plate 12 is provided with a sliding groove 14 extending along its axis. The sliding member 41 of the locking mechanism 4 slides through the sliding groove 14, and a connecting part 43 with external threads is provided at one end passing through the sliding groove 14. The fastener 42 is a nut that matches the connecting part 43. By tightening the nut, it is pressed and fixed to the outer wall of the column 11 to achieve a fixed connection between the insertion rod 31 and the column 11. The working process of the locking mechanism 4 is as follows: When it is necessary to insert the rod 31, first loosen the nut, then press the rod 31 up and down by stepping on the pedal. At this time, the sliding part 41 will slide down along the slide groove 14. When the support spring 33 is compressed to the limit, or the rod 31 touches a hard rock and cannot be pressed down, the sliding part 41 is tightened by the nut. The friction between the nut and the surface of the column 11, the sliding part 41 and the inner wall of the slide groove 14, and the rod 31 and the inner wall of the through hole 13 are used to fix the rod 31. When the sampling is completed and the equipment needs to be moved, loosen the nut, pull the rod 31 up, and after the rod 31 returns to its original position under the elastic force of the support spring 33, tighten the nut to fix the rod 31.

[0033] For the design with fixing mechanisms 3 on both the left and right sides of the column 11, two sliding grooves 14 can be provided on the column 11. These two grooves 14 are slidably connected to the sliding parts 41 on the two insertion rods 31 on the left and right sides, respectively. The two sliding grooves 14 are independent of each other, ensuring that each insertion rod 31 can independently control the insertion timing and depth, avoiding mutual interference and improving the flexibility of equipment fixing. Regarding the specific structure of the sliding grooves 14, two parallel tracks passing through the column 11 can be used. This type of sliding groove 14 has a simple structure, but due to the obstruction of the opposing fixing mechanisms 3, it may be difficult to tighten the nuts. Therefore, the preferred solution is as follows: Figure 2 , Figure 3As shown, the cross-section of the slide groove 14 is L-shaped, penetrating the sidewalls of the column at both ends, and the two slide grooves 14 are arranged symmetrically about the axis of the column 11. The sliding member 41 is also L-shaped, and the connecting parts 43 of the two sliding members 41 pass through the slide grooves 14 on the front and back sides of the column 11, respectively. This allows the connecting parts 43 of the sliding members 41 to be located on both sides of the column 11, without being obstructed by the fixing mechanism 3, thus improving the convenience of turning the nut.

[0034] Regarding the specific structure of the support frame 1 and the part-retrieving mechanism 2, this utility model provides an embodiment, such as... Figure 1 , Figure 4 As shown, the support frame 1 includes a horizontally arranged crossbeam 15 and two vertical columns 11 fixed at both ends of the crossbeam 15. The sampling mechanism 2 is installed in the middle of the crossbeam 15, with its axis perpendicular to the length direction of the crossbeam 15. The sampling mechanism 2 includes an electric push rod 21 and a sampling tube 22. The electric push rod 21 is vertically fixed in the middle of the crossbeam 15, with its output end extending downwards. The sampling tube 22 is coaxially fixedly connected to the output end of the electric push rod 21, and the lower end of the sampling tube 22 is an open structure. The output end of the sampling tube 22 and the electric push rod 21 can be detachably connected, for example, by bolts, to facilitate the replacement of sampling tubes 22 of different specifications. In mountainous areas where access to electricity is inconvenient, a battery can be used to power the electric push rod 21. During sampling, the electric push rod 21 is used to push the sampling tube 22 downwards, and the soil enters from the lower end of the sampling tube 22. As the sampling tube 22 descends, the soil inside is compressed and tightly adheres to the inner wall of the sampling tube 22. After reaching the predetermined depth, the electric push rod 21 is used to pull the sampling tube 22 upwards, thus removing the sampling tube 22. The soil inside is removed along with the sampling tube 22 under the action of friction. To increase the friction between the soil and the inner wall of the sampling tube 22, anti-slip ribs or grooves can be provided on the inner wall of the sampling tube 22.

[0035] like Figure 5 As shown, to facilitate the insertion of the sampling tube 22 into the soil, a bottom ring 23 can be provided at the lower opening of the sampling tube 22. The periphery of the bottom ring 23 has an annular cutting edge structure, and a sealing cap 24 is provided on the bottom ring 23 that can be snapped or threaded onto it. The annular cutting edge structure of the bottom ring 23 can increase the smoothness of the insertion of the sampling tube 22 into the soil. The sealing cap 24 can seal the lower opening of the sampling tube 22 after sampling, which can prevent soil samples from falling out and also protect the annular cutting edge of the bottom ring 23, preventing damage to the cutting edge or injury to people.

[0036] Furthermore, such as Figure 4As shown, a push plate 25 is coaxially slidably disposed inside the sampling tube 22, and the outer edge of the push plate 25 forms a sealed sliding fit with the inner wall of the sampling tube 22. It also includes a push rod 26. A sliding hole 27 is provided at the center of the top of the sampling tube 22. The lower end of the push rod 26 passes through the sliding hole 27 and is fixedly connected to the push plate 25. A handle 28 is provided at the upper end of the push rod 26 outside the sampling tube 22. When designing the connection method between the sampling tube 22 and the output end of the electric push rod 21, space must be left for the movement range of the push rod 26. During the sampling process, the push plate 25 and the push rod 26 will rise as the soil enters the sampling tube 22. During this period, the mark set on the push rod 26 can be used to determine whether the amount of soil in the sampling tube 22 meets the standard. After sampling, the handle 28 can be held to push the push rod 26 downwards, and the push plate 25 can be used to push out the soil in the sampling tube 22, which can ensure the integrity of the sample and facilitate geological analysis.

[0037] In summary, the geological soil sampling device provided by this utility model, by setting a fixing mechanism 3 consisting of an insertion rod 31, a foot pedal 32, and a support spring 33 on the base plate 12 of the support frame 1, allows the insertion rod 31 to be pressed into the soil by stepping on the foot pedal 32 before sampling, thus fixing the support frame 1. At the same time, the locking mechanism set between the insertion rod 31 and the column 11 is used to fix the insertion rod 31, saving manpower and material resources, ensuring the firmness of the support frame 1 and the stability of the sampling process, as well as the safety of the insertion rod 31 when recovering the equipment, and has good practicality and application value.

Claims

1. A soil layer sampling device for geology, comprising a support frame (1) and a sampling mechanism (2) arranged on the support frame (1), characterized in that: The support frame (1) comprises at least two columns (11), the bottom of the column (11) is fixedly connected with a bottom plate (12), the bottom plate (12) is provided with a through hole (13); the top of the bottom plate (12) is provided with a fixing mechanism (3), the fixing mechanism (3) comprises an insertion rod (31) which can pass through the through hole (13), a stepping plate (32) fixed to the top of the insertion rod (31) and a supporting spring (33) supported between the stepping plate (32) and the bottom plate (12), in the natural state, the elastic force of the supporting spring (33) makes the lower end of the insertion rod (31) located in the through hole (13); the side of the insertion rod (31) is fixedly connected with a locking mechanism (4), the locking mechanism (4) comprises a sliding piece (41) which is in sliding connection with the column (11) and a fastener (42) which can be fixed with the column (11).

2. A soil layer sampling device for geotechnical use as claimed in claim 1, wherein: The insertion rod (31) comprises a tapered section in the lower half and a cylindrical section in the upper half.

3. A soil layer sampling device for geotechnical use as claimed in claim 1, wherein: Three supporting springs (33) are arranged between the stepping plate (32) and the bottom plate (12) of the fixing mechanism (3), and the three supporting springs (33) are rotationally symmetrical about the axis of the insertion rod (31).

4. A soil layer sampling device for geotechnical use as claimed in claim 1, wherein: The bottom plate (12) is a rectangular plate body, and one through hole (13) is arranged at each end of the length direction of the bottom plate (12), and a group of fixing mechanisms (3) are correspondingly arranged above each through hole (13).

5. A soil layer sampling device for geological use according to claim 4, characterized in that: The lower end of the column (11) is provided with a sliding groove (14) extending along the axis direction, the sliding piece (41) of the locking mechanism (4) is slidingly inserted into the sliding groove (14), and a threaded connecting portion (43) is arranged at one end of the sliding groove (14), the fastener (42) is a nut matched with the connecting portion (43), and the fixed connection between the insertion rod (31) and the column (11) is realized by rotating the nut to press and fix the outer wall of the column (11).

6. A soil layer sampling device for geological use according to claim 5, characterized in that: Two sliding grooves (14) are arranged on the column (11) and are in sliding connection with the sliding pieces (41) on the two insertion rods (31) on the left and right sides, respectively, the cross section of the sliding groove (14) is L-shaped with the two ends penetrating the side wall of the column, and the two sliding grooves (14) are rotationally symmetrical about the axis of the column (11), and the sliding piece (41) is also L-shaped, and the connecting portions (43) of the two sliding pieces (41) are respectively out of the sliding grooves (14) on the front and back surfaces of the column (11).

7. A soil layer sampling device for geotechnical use according to any one of claims 1 to 6, wherein: The support frame (1) comprises a horizontal cross beam (15) and two columns (11) vertically fixed at both ends of the cross beam (15), and the sampling mechanism (2) is installed in the middle of the cross beam (15) and the axis thereof is perpendicular to the length direction of the cross beam (15).

8. A soil layer sampling device for geological use according to claim 7, characterized in that: The sampling mechanism (2) comprises an electric push rod (21) and a sampling pipe (22), the electric push rod (21) is vertically fixed in the middle of the cross beam (15) and the output end thereof extends downward, and the sampling pipe (22) is coaxially fixed to the output end of the electric push rod (21) and the lower end of the sampling pipe (22) is in open structure.

9. A soil layer sampling device for geological use according to claim 8, characterized in that: A bottom ring (23) is arranged at the lower end opening of the sampling pipe (22), the periphery of the bottom ring (23) is in annular blade structure, and a sealing cover (24) which can be clamped or screwed with the bottom ring (23) is arranged on the bottom ring (23).

10. A soil layer sampling device for geological use according to claim 8, characterized in that: The sampling tube (22) is provided with a push plate (25) sliding coaxially in the sampling tube (22), the outer edge of the push plate (25) is in sealing sliding fit with the inner wall of the sampling tube (22); a push rod (26) is further included, a sliding hole (27) is arranged at the top center of the sampling tube (22), the lower end of the push rod (26) penetrates through the sliding hole (27) and is fixedly connected with the push plate (25), and the upper end of the push rod (26) located outside the sampling tube (22) is provided with a handle (28).

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