A drill bit structure for soil sampling

Abstract

This utility model discloses a drill bit structure for soil sampling, belonging to the field of soil sampling technology. It includes: a support rod with a through groove inside; and a movable component disposed within the through groove of the support rod. In this utility model, by incorporating an adjustment component and a movable component, the threaded cylinder drives the rotating sleeve to move synchronously, changing the distance between the handle and the drill bit, thereby adjusting the length of the support rod. This increases the depth to which the drill bit penetrates the soil, enabling sampling at different depths and improving the sampling range of the drill bit structure. As the drill bit penetrates deeper into the soil, a conical block blocks the drill bit, reducing contamination from soil in other locations and minimizing the impact on subsequent sample analysis. Furthermore, when removing the sample, simply pushing the conical block removes the sample from the drill bit, reducing the difficulty of sample removal and demonstrating the ease of use of the drill bit structure.

Description

Technical Field

[0001] This utility model belongs to the field of soil sampling technology, and in particular relates to a drill bit structure for soil sampling. Background Technology

[0002] Soil sampling refers to the methods of collecting soil samples, including sampling layout and sampling techniques. When collecting profile soil samples, it should be done after the profile observation and recording are completed. Before sampling, the profile should be repaired and cleaned, and the top layer of loose soil should be removed. Then, samples should be taken from the central typical part layer by layer from top to bottom. In order to improve the convenience of sampling, sampling equipment will be used for sampling.

[0003] Most current sampling equipment uses soil drills. These devices have an opening in the drill bit. As the drill moves deeper into the soil, soil enters the drill bit. As the drill continues to go deeper, the soil inside the drill bit is removed from the grooves around the drill bit. When the drill bit reaches the appropriate position, it continues to move down a certain distance, so that the soil inside the drill bit is the soil at the sampling location. Then the drill bit is removed, and at this point, the drill bit contains the sample. However, because the upper layer of soil passes through the inside of the drill bit, there will be residue inside the drill bit, which will contaminate the sample and reduce the results of subsequent sample research. Furthermore, the sample is inside the drill bit, and tools are needed to remove the sample, which is not convenient. Therefore, a soil sampling drill bit structure is provided. Utility Model Content

[0004] The purpose of this invention is to address the problem that soil sampling drill bits are easily contaminated by soil from other locations during sampling, and to propose a new drill bit structure for soil sampling.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a soil sampling drill bit structure, comprising: a support rod, wherein a through groove is provided inside the support rod, a drill bit is connected to one end of the support rod, and a thread is provided on the outer surface of the support rod; a movable component, wherein the movable component is disposed in the through groove of the support rod for blocking the sampling port of the drill bit; and an adjusting component, wherein the adjusting component is disposed outside the support rod for adjusting the length of the support rod; wherein the adjusting component includes a threaded cylinder and a rotating sleeve, the threaded cylinder is sleeved outside the support rod, the inner wall thread of the threaded cylinder is adapted to the thread on the outer surface of the support rod, a limiting ring is fixedly installed on the upper surface of the threaded cylinder, the limiting ring is T-shaped, and the threaded cylinder moves on the outer surface of the support rod to change the total length of the support rod.

[0006] As a further description of the above technical solution:

[0007] Two handles are fixedly installed on the outer surface of the rotating sleeve. A limit groove is provided on the lower surface of the rotating sleeve. The limit groove is adapted to the limit ring. The lower surface of the rotating sleeve is rotatably connected to the upper surface of the threaded cylinder.

[0008] As a further description of the above technical solution:

[0009] A retaining ring is fixedly installed on the inner wall of the limiting groove. The retaining ring is detachable and is used to fix the limiting ring in the limiting groove. The retaining ring blocks the limiting ring, ensuring the stability of the connection between the rotating sleeve and the threaded cylinder, while not affecting the rotation of the limiting ring in the limiting groove.

[0010] As a further description of the above technical solution:

[0011] The inner ring of the rotating sleeve has the same size as the outer ring of the support rod. An mounting plate is fixedly installed on the outer surface of the rotating sleeve, and a positioning spring is fixedly installed on the side wall of the mounting plate.

[0012] As a further description of the above technical solution:

[0013] A fixed plate is fixedly installed at one end of the positioning spring, and a positioning pin is fixedly installed on the side wall of the fixed plate. One end of the positioning pin passes through the interior of the positioning spring and extends to the outside of the other side wall of the mounting plate. The positioning pin integrates the movable component and the adjustment component into a whole, preventing the movable component from moving independently.

[0014] As a further description of the above technical solution:

[0015] The movable component includes a movable rod, the outer surface of which is slidably connected to the inner wall of the through groove of the support rod, one end of which extends to the outer surface of the upper surface of the support rod, and a limit plate is fixedly installed at one end of the movable rod.

[0016] As a further description of the above technical solution:

[0017] The other end of the movable rod extends to the drill bit, and a conical block is fixedly installed at the other end of the movable rod. A positioning hole is provided on the outer surface of the movable rod. The positioning hole is compatible with the positioning rod. The conical block can reduce the resistance between the drill bit and the soil during sampling, making it easier for the drill bit to enter the deep soil.

[0018] As a further description of the above technical solution:

[0019] The outer surface of the conical block is provided with a sliding groove, and a limiting strip is fixedly installed on the inner surface of the drill bit. A stop block is fixedly installed at one end of the limiting strip. The limiting strip is slidably connected to the inner wall of the sliding groove. The stop block is located at the sampling port of the drill bit and blocks the stroke of the conical block to prevent the conical block from detaching from the drill bit.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] In this invention, by incorporating an adjustment component and a movable component, the positioning pin is pulled out of the positioning hole. By rotating the threaded cylinder, the threaded cylinder drives the rotating sleeve to move synchronously, thereby changing the distance between the handle and the drill bit. This allows for adjustment of the length of the support rod, increasing the depth of the drill bit structure into the soil and enabling sampling of soil at different depths. This improves the sampling range of the drill bit structure. As the drill bit penetrates deeper into the soil, a conical block blocks the drill bit. During sampling, the conical block is retracted into the drill bit before sampling, minimizing soil contamination from other locations during drill bit movement. This reduces the impact on subsequent sample analysis. Furthermore, removing the sample only requires pushing the conical block, reducing the difficulty of sample removal and demonstrating the ease of use of the drill bit structure. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a drill bit used for soil sampling.

[0023] Figure 2 This is a three-dimensional structural diagram of the support rod in a soil sampling drill bit.

[0024] Figure 3 This is a partial three-dimensional structural diagram of a movable component in a soil sampling drill bit structure.

[0025] Figure 4 This is a schematic diagram of the exploded structure of the adjustment component in a soil sampling drill bit.

[0026] Figure 5 In a soil sampling drill bit structure Figure 4 A magnified structural diagram of point A in the middle.

[0027] Figure 6 This is a schematic diagram of the exploded structure of the rotating sleeve in a soil sampling drill bit.

[0028] Figure 7 This is a schematic cross-sectional view of a soil sampling drill bit structure.

[0029] Legend:

[0030] 1. Support rod; 2. Drill bit; 3. Movable assembly; 31. Movable rod; 32. Positioning hole; 33. Conical block; 34. Slide groove; 35. Limiting plate; 4. Adjusting assembly; 41. Threaded cylinder; 42. Limiting ring; 43. Rotating sleeve; 44. Handle; 45. Retaining ring; 46. Mounting plate; 47. Positioning spring; 48. Fixed plate; 49. Positioning pin; 410. Limiting groove; 5. Limiting strip; 6. Stop block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] In specific implementation, such as Figures 1-7 As shown, this utility model provides a technical solution: a soil sampling drill bit structure, including a support rod 1, the support rod 1 having a through groove inside, one end of the support rod 1 being connected to and mounted with a drill bit 2, and the outer surface of the support rod 1 having threads; a movable component 3, the movable component 3 being disposed in the through groove of the support rod 1 for blocking the sampling port of the drill bit 2; and an adjusting component 4, the adjusting component 4 being disposed outside the support rod 1 for adjusting the length of the support rod 1; wherein, the adjusting component 4 includes a threaded cylinder 41 and a rotating sleeve 43, the threaded cylinder 41 being sleeved outside the support rod 1, the inner wall thread of the threaded cylinder 41 being adapted to the thread on the outer surface of the support rod 1, a limiting ring 42 being fixedly installed on the upper surface of the threaded cylinder 41, the limiting ring 42 being T-shaped, and the outer surface of the rotating sleeve 43 being... Two handles 44 are fixedly installed. The lower surface of the rotating sleeve 43 is provided with a limiting groove 410. The limiting groove 410 is adapted to the limiting ring 42. The lower surface of the rotating sleeve 43 is rotatably connected to the upper surface of the threaded cylinder 41. A retaining ring 45 is fixedly installed on the inner wall of the limiting groove 410. The retaining ring 45 is detachable and used to fix the limiting ring 42 in the limiting groove 410. The inner ring of the rotating sleeve 43 has the same size as the outer ring of the support rod 1. An installation plate 46 is fixedly installed on the outer surface of the rotating sleeve 43. A positioning spring 47 is fixedly installed on the side wall of the installation plate 46. A fixing plate 48 is fixedly installed on one end of the positioning spring 47. A positioning pin 49 is fixedly installed on the side wall of the fixing plate 48. One end of the positioning pin 49 passes through the interior of the positioning spring 47 and extends to the outside of the other side wall of the installation plate 46.

[0033] Pull the positioning pin 49 outward by the fixed plate 48 to disengage it from the positioning hole 32. Then rotate the threaded cylinder 41. Under the action of the thread, the threaded cylinder 41 moves to the upper end of the support rod 1. At this time, the threaded cylinder 41 drives the rotating sleeve 43 to move synchronously. At this time, the positioning pin 49 and the positioning hole 32 may not be aligned. After the threaded cylinder 41 is adjusted to the appropriate position, the rotating sleeve 43 rotates under the limit of the limiting ring 42 to align the positioning pin 49 with the positioning hole 32. Then, the positioning pin 49 is inserted into the positioning hole 32 under the action of the positioning spring 47. This increases the length of the support rod 1 with the cooperation of the threaded cylinder 41. When the threaded cylinder 41 moves, the movable rod 31 and the conical block 33 remain stationary. At this time, the conical block 33 is partially located below the drill bit 2 and partially located inside the drill bit 2 under the obstruction of the stop block 6, thus blocking the sampling port of the drill bit 2.

[0034] like Figures 3-7 As shown, the movable component 3 includes a movable rod 31. The outer surface of the movable rod 31 is slidably connected to the inner wall of the through groove of the support rod 1. One end of the movable rod 31 extends to the outer surface of the upper surface of the support rod 1. A limiting plate 35 is fixedly installed at one end of the movable rod 31. The other end of the movable rod 31 extends to the drill bit 2. A conical block 33 is fixedly installed at the other end of the movable rod 31. A positioning hole 32 is provided on the outer surface of the movable rod 31. The positioning hole 32 is adapted to the positioning rod. A sliding groove 34 is provided on the outer surface of the conical block 33. A limiting strip 5 is fixedly installed on the inner surface of the drill bit 2. A stop block 6 is fixedly installed at one end of the limiting strip 5. The limiting strip 5 is slidably connected to the inner wall of the sliding groove 34. The stop block 6 is located at the sampling port of the drill bit 2.

[0035] Using handle 44, the rotating sleeve 43 drives the support rod 1 and drill bit 2 into the soil via the threaded cylinder 41. The conical block 33 reduces the friction between the drill bit 2 and the soil. Once the drill bit 2 has penetrated a suitable distance into the soil, the positioning pin 49 is disengaged from the positioning hole 32. Then, the movable rod 31 is pulled upwards towards the support rod 1. At this time, the movable rod 31 drives the conical block 33 to move towards the top of the drill bit 2 under the constraint of the sliding groove 34 and the limiting strip 5. Once the upper surface of the conical block 33 is in contact with the inner wall of the top surface of the drill bit 2, the positioning pin 49 is inserted into the movable rod. The drill bit 2 is moved into the positioning hole 32 of the drill bit 31, thereby fixing the conical block 33 by fixing the movable rod 31. Then the drill bit 2 continues to move into the soil a certain distance. At this time, the sampling port of the drill bit 2 is no longer blocked by the conical block 33. During the movement of the drill bit 2, the soil enters the drill bit 2 through the sampling port. Then the drill bit 2 is pulled out of the soil. After aligning the drill bit 2 with the place where the sample is placed, the positioning pin 49 is pulled out from the positioning hole 32. Then the movable rod 31 drives the conical block 33 to move towards the bottom of the drill bit 2. As the conical block 33 moves, the soil sample in the drill bit 2 will be pushed out.

[0036] Working principle: The positioning pin 49 is pulled outward by the fixed plate 48, so that the positioning pin 49 is disengaged from the positioning hole 32. Then the threaded cylinder 41 is rotated. Under the action of the thread, the threaded cylinder 41 moves to the upper end of the support rod 1. At this time, the threaded cylinder 41 drives the rotating sleeve 43 to move synchronously. After the threaded cylinder 41 is adjusted to the appropriate position, the rotating sleeve 43 rotates under the limit of the limiting ring 42, so that the positioning pin 49 is aligned with the positioning hole 32. Then, the positioning pin 49 is inserted into the positioning hole 32 under the action of the positioning spring 47, thereby increasing the length of the support rod 1 with the cooperation of the threaded cylinder 41. At the same time, the conical block 33 is located outside the drill bit 2, blocking the sampling port of the drill bit 2.

[0037] Then, using handle 44, the rotating sleeve 43 drives the support rod 1 and drill bit 2 into the soil via the threaded cylinder 41. Under the action of the conical block 33, the friction between the drill bit 2 and the soil is reduced. After the drill bit 2 has penetrated to an appropriate distance into the soil, the positioning pin 49 is disengaged from the positioning hole 32 again. Then, the movable rod 31 is pulled upwards towards the support rod 1. At this time, the movable rod 31 drives the conical block 33 to move towards the top of the drill bit 2 under the limitation of the sliding groove 34 and the limiting strip 5. After the upper surface of 3 is attached to the inner wall of the top surface of the drill bit 2, the positioning pin 49 is inserted into the positioning hole 32 of the movable rod 31, thereby fixing the conical block 33 by fixing the movable rod 31. Then, the drill bit 2 continues to move into the soil a distance, so that the soil enters the drill bit 2 through the sampling port. Then, the drill bit 2 is pulled out of the soil. After aligning the drill bit 2 with the place where the sample is placed, the movable rod 31 drives the conical block 33 to move towards the bottom of the drill bit 2, pushing out the soil sample in the drill bit 2.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drill bit structure for soil sampling, characterized in that: include: A support rod (1) is provided with a through groove inside the support rod (1), and a drill bit (2) is connected to one end of the support rod (1). The outer surface of the support rod (1) is provided with threads. The movable component (3) is disposed in the through groove of the support rod (1) and is used to block the sampling port of the drill bit (2); Adjustment component (4), which is disposed outside the support rod (1) and is used to adjust the length of the support rod (1); The adjusting component (4) includes a threaded cylinder (41) and a rotating sleeve (43). The threaded cylinder (41) is sleeved on the outside of the support rod (1). The inner wall thread of the threaded cylinder (41) is adapted to the thread on the outer surface of the support rod (1). A limiting ring (42) is fixedly installed on the upper surface of the threaded cylinder (41). The limiting ring (42) is set in a T-shape.

2. The drill bit structure for soil sampling according to claim 1, characterized in that, Two handles (44) are fixedly installed on the outer surface of the rotating sleeve (43). A limiting groove (410) is provided on the lower surface of the rotating sleeve (43). The limiting groove (410) is adapted to the limiting ring (42). The lower surface of the rotating sleeve (43) is rotatably connected to the upper surface of the threaded cylinder (41).

3. The soil sampling drill bit structure according to claim 2, characterized in that, A retaining ring (45) is fixedly installed on the inner wall of the limiting groove (410). The retaining ring (45) can be disassembled and is used to fix the limiting ring (42) in the limiting groove (410).

4. The drill bit structure for soil sampling according to claim 3, characterized in that, The inner ring of the rotating sleeve (43) has the same size as the outer ring of the support rod (1). An mounting plate (46) is fixedly installed on the outer surface of the rotating sleeve (43), and a positioning spring (47) is fixedly installed on the side wall of the mounting plate (46).

5. The soil sampling drill bit structure according to claim 4, characterized in that, One end of the positioning spring (47) is fixedly mounted with a fixing plate (48), and a positioning pin (49) is fixedly mounted on the side wall of the fixing plate (48). One end of the positioning pin (49) passes through the interior of the positioning spring (47) and extends to the outside of the other side wall of the mounting plate (46).

6. The soil sampling drill bit structure according to claim 5, characterized in that, The movable component (3) includes a movable rod (31), the outer surface of which is slidably connected to the inner wall of the through groove of the support rod (1), one end of which extends to the outer surface of the upper surface of the support rod (1), and a limit plate (35) is fixedly installed on one end of the movable rod (31).

7. The drill bit structure for soil sampling according to claim 6, characterized in that, The other end of the movable rod (31) extends to the drill bit (2), and a conical block (33) is fixedly installed on the other end of the movable rod (31). A positioning hole (32) is provided on the outer surface of the movable rod (31), and the positioning hole (32) is adapted to the positioning rod.

8. The soil sampling drill bit structure according to claim 7, characterized in that, The outer surface of the conical block (33) is provided with a sliding groove (34), and a limiting strip (5) is fixedly installed on the inner surface of the drill bit (2). A stop block (6) is fixedly installed at one end of the limiting strip (5). The limiting strip (5) is slidably connected to the inner wall of the sliding groove (34), and the stop block (6) is located at the sampling port of the drill bit (2).

Images