Soil layer sampling device for geology

Abstract

The geological soil layer sampling device comprises a supporting frame and a sampling mechanism, a bottom plate is arranged at the bottom of a stand column of the supporting frame, a through hole is formed in 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] The invention relates to the field of sampling equipment, in particular to a geological soil layer sampling device. Background Art

[0002] Geology refers generally to the nature and characteristics of the earth, mainly referring to the material composition, structure, tectonic structure, and development history of the earth, including the differentiation of the earth's spheres, physical properties, chemical properties, rock properties, mineral composition, the production status 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 survey the geological conditions of the project's surroundings in advance. At present, a sampling device is commonly used to sample the soil, and then take it back to the laboratory for geological analysis. There are many types of sampling devices at present. For example, the patent document with publication number CN 215811718 U discloses a geological soil layer sampling device. The device includes a U-shaped plate, the lower wall of the U-shaped plate is plugged into a hollow shaft, a vertical shaft is arranged inside the hollow shaft, and the two ends of the vertical shaft extend to the outside of the hollow shaft on both sides, and the outer surface of the vertical shaft located inside the hollow shaft is sleeved with spiral leaves, and one end of the vertical shaft located outside the hollow shaft is fixedly connected with a ratchet. When the hollow shaft is located in the geological soil layer, by rotating the rotating plate clockwise, the vertical shaft can be rotated, and then the spiral leaves can be rotated, and then the soil can be sampled, and it is ensured that the sample will not be exposed.

[0004] The main disadvantage of this device is that it lacks an auxiliary support device, requiring the user to hold the device with hands at all times when in use, and manual sampling is time-consuming and laborious. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies of the existing sampling equipment, the technical problem to be solved by the present invention is to provide a geological soil layer sampling device which is firmly fixed and easy to use.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A geological soil sampling device comprises a support frame and a sampling mechanism arranged on the support frame, the support frame comprises at least two columns, the bottom of the columns are fixedly connected to a base plate, and the base plate is provided with a through hole; a fixing mechanism is provided above the base plate, the fixing mechanism comprises an insertion rod that can pass through the through hole, a pedal fixed to the top of the insertion rod and a support spring supported between the pedal and the base plate, in a natural state, the elastic force of the support spring causes the lower end of the insertion rod to be located in the through hole; a locking mechanism is fixedly connected to the side of the insertion rod, and the locking mechanism comprises a sliding member slidably connected to the column and a fastener that can be fixed to the column.

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

[0009] Furthermore, three support springs are provided between the pedal board and the bottom plate of the fixing mechanism, and the three support springs are rotationally symmetrically arranged around the axis of the insertion rod.

[0010] Furthermore, the bottom plate is a rectangular plate body, and a through hole is respectively arranged at both ends in the length direction of the bottom plate, and a group of fixing mechanisms is correspondingly arranged above each through hole.

[0011] Furthermore, a slide groove extending along the axial direction of the column is provided at the lower end thereof near the base plate, the sliding member of the locking mechanism slides and is inserted into the slide groove, and a connecting portion with an external thread is provided at one end passing through the slide groove, and the fastener is a nut matching the connecting portion, and the fixed connection between the rod and the column is achieved by tightening the nut so that it is pressed and fixed to the outer wall of the column.

[0012] Furthermore, the column is provided with two sliding grooves, which are respectively slidably connected to the sliding parts on the two plug rods on the left and right sides. The cross-section of the sliding groove is L-shaped with both ends passing through the side walls of the column, and the two sliding grooves are rotationally symmetrically arranged around the axis of the column. The sliding part is 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 upright posts vertically fixed at both ends of the crossbeam, and 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 beam, and its output end extends downward. The sampling tube is coaxially fixed to the output end of the electric push rod, and the lower end of the sampling tube is an open structure.

[0015] Furthermore, a bottom ring is provided at the lower opening of the sampling tube, the periphery of the bottom ring is an annular cutting edge structure, and a sealing cover which can be snap-fitted or threadedly connected to the bottom ring is provided on the bottom ring.

[0016] Furthermore, a push plate is coaxially slidably arranged 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, and a handle is provided at the upper end of the push rod located outside the sampling tube.

[0017] The beneficial effects of the present invention are as follows: by arranging a fixing mechanism consisting of an insertion rod, a pedal and a supporting spring on the bottom plate of the support frame, the insertion rod can be pressed into the soil by stepping on the pedal before sampling, so as to fix the support frame without having to hold the equipment all the time, thereby ensuring the stability of the entire device during sampling; in addition, by arranging a locking mechanism between the insertion rod and the column of the support frame, the insertion rod can be fixed when the insertion rod is inserted into place or when the insertion rod is retracted, thereby ensuring the stability of the insertion when fixing the equipment and preventing the sharp part of the lower end of the insertion rod from being exposed and injuring people when the equipment is recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the fixed structure of the present invention;

[0020] Figure 3 is a cross-sectional view of the lower end of the column of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the sampling tube of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the lower end of the sampling tube of the present invention.

[0023] Marked in the figure are, 1-support frame, 2-sampling mechanism, 3-fixing mechanism, 4-locking mechanism, 11-column, 12-bottom 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, 33-support spring, 41-sliding part, 42-fastener, 43-connecting part. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings.

[0025] It should be noted that if there are directional indication terms in the present invention, such as up, down, left, right, front, and back directions and orientation terms, they are for the purpose of facilitating the description of the relative position relationship between components, and are not specific to the absolute position of the related components or the position relationship between components. They are only used to explain the relative position relationship and movement of the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly. If there are terms related to quantity in the present invention, such as "multiple", "multiple", "several", etc., they specifically refer to two or more.

[0026] like Figure 1 , Figure 2As shown, a geological soil layer sampling device provided by the present invention includes a support frame 1 and a sampling mechanism 2 arranged on the support frame 1, the support frame 1 includes at least two columns 11, the bottom of the column 11 is fixedly connected to a base plate 12, and the base plate 12 is provided with 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 pedal 32 fixed to the top of the insertion rod 31 and a support spring 33 supported between the pedal 32 and the base plate 12, in a natural state, the elastic force of the support 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 to a locking mechanism 4, the locking mechanism 4 includes a sliding member 41 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 solution disclosed in the prior art. The present invention mainly improves the support frame 1 that provides support for the sampling mechanism 2, and specifically ensures the stable connection between the bottom plate 12 and the ground soil by setting a fixing mechanism 3 and a locking mechanism 4. The through hole 13 passes through the upper and lower surfaces of the bottom 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 play a guiding and limiting role for the insertion rod 31.

[0027] The use process of the present invention is as follows: when sampling, the device is first moved to the sampling position, and the bottom plate 12 is used to place the device on a flat ground, and then the foot is stepped on the pedal 32, and the insertion rod 31 is inserted into the soil with downward force. At the same time, the sliding member 41 overcomes the elastic force of the support spring 33 and slides downward along the column 11. When the insertion is in place, 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 retracting the insertion rod 31. After that, all the insertion rods 31 are inserted according to the above process. The equipment is firmly installed in the soil and fixed therein to ensure the stability of sampling. After sampling, first loosen the fastener 42, and then use your hands or tools 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, and finally the rod 31 is fixed to the column 11 by the fastener 42 to prevent the sharp part of the lower end of the rod 31 from being exposed and injuring people. After all the rods 31 are pulled out of the soil and fixed 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] In order to improve the stability of the installation structure of the insertion rod 31 itself, three support springs 33 are provided between the pedal 32 of the fixing mechanism 3 and the base plate 12. The three support springs 33 are rotationally symmetrically arranged around the axis of the insertion rod 31, which can provide uniform supporting force for the pedal 32 and improve the stability of the inserted rod 31.

[0030] In order to facilitate the insertion of the rod 31 into the soil and ensure stable insertion with the soil, the rod 31 includes a conical section at the lower half and a cylindrical section at the upper half. The conical section is used for the rod 31 to break the soil, and the cylindrical section is closely fitted with the surrounding soil to increase friction.

[0031] In order to further increase the connection parts between the bottom plate 12 and the soil, the bottom plate 12 can be set as a rectangular plate body, and a through hole 13 is respectively set at both ends in the length direction, and a set of fixing mechanisms 3 is correspondingly set above each through hole 13. Using multiple fixing mechanisms 3 to plug and fix with the soil can increase the connection points, improve the balance of the force on the bottom plate 12, and help to enhance the stability of the support frame 1.

[0032] Regarding the specific structure of the locking mechanism 4, the preferred solution of the present invention is as follows: Figure 2 As shown, a slide groove 14 extending along the axial direction of the column 11 is provided at the lower end thereof near the base plate 12, the sliding member 41 of the locking mechanism 4 slides and is inserted into the slide groove 14, and a connecting portion 43 with an external thread is provided at one end passing through the slide groove 14, the fastener 42 is a nut matching the connecting portion 43, and the fixed connection between the insertion rod 31 and the column 11 is achieved by tightening the nut so that it is pressed and fixed to the outer wall of the column 11. The working process of the locking mechanism 4 is: when it is necessary to insert the insertion rod 31, the nut is loosened first, and then the insertion rod 31 is pressed down by stepping on the pedal with the foot. At this time, the sliding member 41 will slide downward along the slide groove 14. When the support spring 33 is compressed to the limit, or the insertion rod 31 touches the hard rock and cannot be pressed down, the sliding member 41 is tightened by the nut, and the friction between the nut and the surface of the column 11, the sliding member 41 and the inner wall of the slide groove 14, and the insertion rod 31 and the inner wall of the through hole 13 is used to fix the insertion rod 31; when the sampling is completed and the equipment needs to be moved, the nut is loosened, the insertion rod 31 is pulled up, and after the insertion rod 31 is reset under the elastic force of the support spring 33, the nut is tightened to fix the insertion rod 31.

[0033] For the solution of providing a fixing mechanism 3 on both the left and right sides of the column 11, two slide grooves 14 can be provided on the column 11. The two slide grooves 14 are slidably connected to the sliding members 41 on the two insertion rods 31 on the left and right sides, respectively. The two slide grooves 14 are independent of each other, which can ensure that each insertion rod 31 can independently control the insertion timing and insertion depth, avoid mutual interference, and improve the flexibility of equipment fixation. For the specific structure of the slide groove 14, two parallel slides passing through the column 11 can be used. This form of slide groove 14 has a simple structure, but it may not be easy to turn the nut due to the obstruction of the opposite fixing mechanism 3. Therefore, the preferred solution is, Figure 2 , Figure 3As shown, the cross section of the slide groove 14 is L-shaped with both ends penetrating the side wall of the column, and the two slide grooves 14 are arranged rotationally symmetrically around 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 respectively pass through the slide grooves 14 on the front and back sides of the column 11. In this way, the connecting parts 43 of the sliding members 41 can be located on the front and back sides of the column 11, and will not be blocked by the fixing mechanism 3, which can improve the convenience of screwing the nut.

[0034] Regarding the specific structure of the support frame 1 and the pickup mechanism 2, the present invention provides an embodiment, such as Figure 1 , Figure 4 As shown, the support frame 1 includes a horizontally arranged crossbeam 15 and two columns 11 vertically fixed at both ends of the crossbeam 15. The sampling mechanism 2 is installed in the middle of the crossbeam 15, and its axis is 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 to the middle of the crossbeam 15, and its output end extends downward. 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 sampling tube 22 and the output end of the electric push rod 21 can be set to be detachably connected, such as by bolt connection, so that sampling tubes 22 of different specifications can be easily replaced. For mountainous areas where it is inconvenient to connect to electricity, a battery can be used to power the electric push rod 21. When sampling, the electric push rod 21 is used to push the sampling tube 22 downward, 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 closely fits the inner wall of the sampling tube 22. After reaching a predetermined depth, the electric push rod 21 is used to pull the sampling tube 22 upward to pull out the sampling tube 22. The soil inside is taken out together with the sampling tube 22 under the action of friction. In order to increase the friction between the soil and the inner wall of the sampling tube 22, anti-skid ribs or grooves can be provided on the inner wall of the sampling tube 22.

[0035] like Figure 5 As shown, in order to facilitate the insertion of the sampling tube 22 into the soil, a bottom ring 23 may be provided at the lower opening of the sampling tube 22. The periphery of the bottom ring 23 is an annular cutting edge structure, and a sealing cover 24 which can be snap-fitted or threadedly connected thereto is provided on the bottom ring 23. The annular cutting edge structure of the bottom ring 23 can increase the smoothness of the sampling tube 22 being inserted into the soil. The sealing cover 24 can seal the lower opening of the sampling tube 22 after the sampling is completed, which can prevent the soil sample from falling off on the one hand, and can also protect the annular cutting edge of the bottom ring 23 on the other hand, to prevent the cutting edge from being damaged or scratching people.

[0036] Further, such as Figure 4As shown, a push plate 25 is coaxially slidably arranged in 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; a push rod 26 is also included, and a sliding hole 27 is arranged at the center of the top of the sampling tube 22, and the lower end of the push rod 26 passes through the sliding hole 27 and is fixedly connected to the push plate 25, and a handle 28 is arranged at the upper end of the push rod 26 outside the sampling tube 22. When designing the connection mode between the sampling tube 22 and the output end of the electric push rod 21, it is necessary to leave space for the moving range of the push rod 26. During the sampling process, the push plate 25 and the push rod 26 will rise with the soil entering the sampling tube 22, and during this period, it can be judged whether the amount of soil in the sampling tube 22 meets the standard by the mark set on the push rod 26; after the sampling is completed, the handle 28 can be held to push the push rod 26 downward, and the soil in the sampling tube 22 can be pushed out by the push plate 25, which can ensure the integrity of the sample and facilitate geological analysis.

[0037] In summary, the geological soil sampling device provided by the present invention has a fixing mechanism 3 consisting of an insertion rod 31, a pedal 32 and a support spring 33 arranged on the bottom plate 12 of the support frame 1. Before sampling, the insertion rod 31 can be pressed into the soil by stepping on the pedal 32 to fix the support frame 1. At the same time, the insertion rod 31 is fixed by a locking mechanism arranged between the insertion rod 31 and the column 11, which saves manpower and material resources, ensures 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 the equipment is recovered, and has good practicality and application value.

Claims

1. A geological soil sampling device, 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 columns (11) is fixedly connected to a base plate (12), and the base plate (12) is provided with a through hole (13); a fixing mechanism (3) is provided above the base plate (12), and the fixing mechanism (3) comprises an insertion rod (31) that can pass through the through hole (13), a pedal (32) fixed to the top of the insertion rod (31), and a support spring (33) supported between the pedal (32) and the base plate (12), and in a natural state, the elastic force of the support spring (33) causes the lower end of the insertion rod (31) to be located in the through hole (13); a locking mechanism (4) is fixedly connected to the side of the insertion rod (31), and the locking mechanism (4) comprises a sliding member (41) slidably connected to the column (11) and a fastener (42) that can be fixed to the column (11).

2. A geological soil sampling device as claimed in claim 1, characterized in that: The insertion rod (31) comprises a conical section at the lower half and a cylindrical section at the upper half.

3. A geological soil sampling device as claimed in claim 1, characterized in that: Three support springs (33) are arranged between the pedal (32) of the fixing mechanism (3) and the bottom plate (12), and the three support springs (33) are arranged rotationally symmetrically around the axis of the insertion rod (31).

4. A geological soil sampling device as claimed in claim 1, characterized in that: The bottom plate (12) is a rectangular plate body, and each of the two ends in the length direction is provided with a through hole (13), and a group of fixing mechanisms (3) is correspondingly arranged above each through hole (13).

5. A geological soil sampling device as claimed in claim 4, characterized in that: A slide groove (14) extending along the axial direction of the column (11) is provided at the lower end thereof near the base plate (12); a sliding member (41) of the locking mechanism (4) is slidably inserted into the slide groove (14), and a connecting portion (43) with an external thread is provided at one end passing through the slide groove (14); the fastener (42) is a nut matching the connecting portion (43); and the fixed connection between the insertion rod (31) and the column (11) is achieved by tightening the nut so that the nut is pressed and fixed to the outer wall of the column (11).

6. A geological soil sampling device as claimed in claim 5, characterized in that: The column (11) is provided with two slide grooves (14), which are respectively slidably connected to the sliding members (41) on the two insertion rods (31) on the left and right sides. The cross section of the slide groove (14) is L-shaped with both ends passing through the side walls of the column, and the two slide grooves (14) are rotationally symmetrically arranged around 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) respectively pass through the slide grooves (14) on the front and back sides of the column (11).

7. A geological soil sampling device according to any one of claims 1 to 6, characterized in that: The support frame (1) comprises a horizontally arranged crossbeam (15) and two upright posts (11) vertically fixed at both ends of the crossbeam (15); the sampling mechanism (2) is installed in the middle of the crossbeam (15), and its axis is perpendicular to the length direction of the crossbeam (15).

8. A geological soil sampling device as claimed in claim 7, characterized in that: The sampling mechanism (2) comprises an electric push rod (21) and a sampling tube (22); the electric push rod (21) is vertically fixed to the middle of the crossbeam (15), and its output end extends downward; 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.

9. A geological soil sampling device as claimed in claim 8, characterized in that: A bottom ring (23) is provided at the lower opening of the sampling tube (22), the periphery of the bottom ring (23) is an annular cutting edge structure, and a sealing cover (24) which can be snap-fitted or threadedly connected thereto is provided on the bottom ring (23).

10. A geological soil sampling device as claimed in claim 8, characterized in that: A push plate (25) is coaxially slidably arranged 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), and 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), and a handle (28) is provided at the upper end of the push rod (26) located outside the sampling tube (22).

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