A multi-layer soil sampling device for highway construction

Abstract

This invention relates to the field of soil sampling technology and discloses a multi-layer soil sampling device for highway construction. The device includes a connecting mechanism installed on the outer wall of a frame, comprising a connecting plate fixedly connected to the outer wall of the frame, with a fixed cylinder fixedly connected to the end of the connecting plate away from the frame; a scraping mechanism installed on the inner wall of the connecting mechanism; and a control mechanism installed on the outer wall of the scraping mechanism. By using connecting bags, when the stripping rod is inserted into the soil, some connecting bags will shrink. During this shrinkage, other connecting bags will open outwards due to the pushing force of the limiting plate. This disrupts the internal structure of the soil, causing it to fall into the receiving chamber. This method prevents the tipping plate from directly compressing the soil, avoids soil mixed with gravel sliding and rubbing along the outer wall of the screw, significantly reduces abrasive wear on the screw from gravel, and extends the screw's service life.

Description

Technical Field

[0001] This invention relates to the field of soil sampling technology, specifically to a multi-layer soil sampling device for highway construction. Background Technology

[0002] Sampling and testing of subgrade soil layers is a necessary step in highway construction quality control. By obtaining soil samples at different depths and conducting physical and mechanical property tests, data can be provided for assessing key indicators such as subgrade compaction, bearing capacity, and moisture content. This directly affects the design quality and construction safety of highway projects. The emergence of mechanical sampling devices has improved sampling efficiency to some extent. Currently, common mechanical sampling devices typically use sampling tubes with drill bits for sampling.

[0003] During actual sampling operations, the scraper and the soil adhering to the outer wall of the screw are in surface contact. When the scraper pushes the soil, the soil clods do not peel off directly, but slide along the outer wall of the screw. If the soil contains gravel, the gravel will continuously rub and scrape against the outer wall of the screw, generating abrasive wear, causing continuous mechanical damage to the screw, significantly shortening the screw's service life and reducing the reliability of equipment operation. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a multi-layer soil sampling device for highway construction, including a frame, a sliding plate slidably connected to the outer wall of the frame, a motor fixedly connected to the top of the sliding plate, a handle fixedly connected to the top of the frame, a screw rotatably connected to the side of the sliding plate away from the handle, and a rotatably connected end of the motor away from the handle to the end of the screw near the handle. The device also includes: A connecting mechanism is installed on the outer wall of the frame. The connecting mechanism includes a connecting plate that is fixedly connected to the outer wall of the frame. A fixing cylinder is fixedly connected to the end of the connecting plate that is away from the frame. The scraping mechanism is installed on the inner wall of the connecting mechanism; The control mechanism is installed on the outer wall of the scraping mechanism. The operator holds the handle to move the device to the detection point and starts the motor, which drives the screw to rotate.

[0005] Preferably, the connecting mechanism includes: The connecting components are installed on the outer wall of the frame. The material receiving assembly is installed on the inner wall of the connecting assembly; The soil carried out by the screw falls into the receiving assembly through the scraping mechanism.

[0006] Preferably, the scraping mechanism includes: A positioning component is installed on the outer wall of the connecting component. The scraping component is installed on the outer wall of the positioning component; When the soil is squeezed and scraped, the pressure generated by the soil will drive the scraping component to rotate.

[0007] Preferably, the control mechanism includes: The control component is installed on the outer wall of the scraping component; A sliding component is installed on the outer wall of the positioning component; When the soil comes into contact with the sliding component, the pressure generated by the soil can drive the sliding component to rotate.

[0008] Preferably, the connecting assembly includes a fixing rod that is fixedly connected to the inner wall of the fixing cylinder; When the positioning component is squeezed, it will rotate about 25 degrees around the fixed rod as the rotation center.

[0009] Preferably, the receiving assembly includes a receiving cylinder fixedly connected to the inner wall of the fixed cylinder, and a receiving cavity is provided in the inner wall of the receiving cylinder; The soil scraped off by the scraping mechanism falls into the receiving chamber.

[0010] Preferably, the positioning assembly includes a rotating plate rotatably connected to the end of the fixed rod away from the fixed cylinder, and a plurality of positioning plates are fixedly connected to the side of the rotating plate away from the motor; Among them, several positioning plates are arranged in a linear array along the outer wall of the rotating plate.

[0011] Preferably, the scraping assembly includes a rotating rod rotatably connected to the inner wall of the positioning plate, and a plurality of peeling rods rotatably connected to the outer wall of the rotating rod; Each rotating rod has several peeling rods, and a torsion spring is installed at the intersection of the rotating rod and the positioning plate, and a torsion spring is installed at the intersection of the rotating rod and the peeling rod.

[0012] Preferably, the control assembly includes a plurality of connecting bags fitted onto the outer wall of the peeling rod, and a plurality of limiting plates are fixedly connected to the outer wall of the peeling rod; The connecting bag is made of elastic fiber blended fabric, and a connecting bag is set between every two peeling rods. When the connecting bag is damaged, it can be removed from the peeling rod.

[0013] Preferably, the sliding assembly includes a flip plate rotatably connected to the outer wall of the rotating plate, a limit plate fixedly connected to the outer wall of the rotating plate, a slide rod slidably connected to the outer wall of the rotating plate, a positioning rod fixedly connected to the side of the slide rod near the rotating plate, and an elastic plate fixedly connected to the outer wall of the positioning rod. A torsion spring is installed at the junction of the flipping plate and the rotating plate. In the initial state, the end of the flipping plate is in contact with the sliding rod. When the soil comes into contact with the flipping plate, the resulting thrust will cause the flipping plate to rotate, thereby causing the sliding rod to slide.

[0014] The present invention has the following beneficial effects: (1) By setting up connecting bags, when the stripping rod is inserted into the soil, some connecting bags will shrink. During the shrinkage of the connecting bags, other connecting bags will be pushed outward by the limiting plate. This will destroy the internal structure of the soil and cause the soil to fall into the receiving chamber on its own. In this way, the flipping plate is prevented from directly squeezing the soil, and the soil mixed with gravel will be prevented from sliding and rubbing along the outer wall of the screw, reducing the abrasive wear of the gravel on the screw and extending the service life of the screw.

[0015] (2) By setting up a flip plate, when the soil is too compacted, the soil will come into contact with the surface of the flip plate as the screw rotates. The flip plate will be pushed by the soil, thus rotating in the direction of moving closer to the limiting plate. At this time, the rotating limiting plate will push the sliding rod to slide. The sliding rod will cause multiple rotating rods to rotate. During the rotation, the rotating rod will apply a push force to the soil in the direction of moving closer to the fixed cylinder through the peeling rod, so that the soil on the screw falls off. In this way, it is prevented that the overly compacted soil cannot fall off and cause the device to jam. At the same time, it can also prevent the traditional rigid scraper from squeezing the soil when the soil is relatively wet, causing a large amount of water to be released, thus improving the authenticity of the detection.

[0016] (3) By setting multiple connecting bags, the increased compression of the connecting bags will cause them to shrink and force the other connecting bags to unfold again. In this way, the harder substances in the soil will not directly exert pressure on the connecting bags, thus avoiding the overload of a single connecting bag, which will not be able to deform and will tear and break.

[0017] (4) By setting a rotating rod, when multiple connecting bags are squeezed by soil, one of the connecting bags on the rotating rod will always remain in an unfolded state. In this way, the peeling rod can rotate continuously, preventing a large amount of soil from sticking to the connecting bags, and at the same time accelerating the falling speed of the soil. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the fixed cylinder of the present invention; Figure 3 This is a schematic diagram of the internal structure of the fixed cylinder of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the overall structure of the control component of the present invention; Figure 6 This is a schematic diagram of the overall structure of the flip plate of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point D; Figure 8 This is a schematic diagram of the bottom structure of the connecting plate of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram of the distribution of the limiting plates in this invention; Figure 11 For the present invention Figure 10 Enlarged diagram of point C in the middle.

[0020] The attached diagram lists the components represented by each number as follows: In the diagram: 12. Motor; 13. Screw; 14. Frame; 15. Sliding plate; 16. Handle; 2. Connecting mechanism; 21. Connecting assembly; 211. Connecting plate; 212. Fixing cylinder; 22. Receiving assembly; 221. Receiving cylinder; 222. Receiving chamber; 3. Scraping mechanism; 31. Positioning assembly; 311. Rotating plate; 312. Positioning plate; 32. Scraping assembly; 321. Rotating rod; 322. Peeling rod; 4. Control mechanism; 41. Control assembly; 411. Connecting bag; 412. Limiting plate; 42. Sliding assembly; 421. Flipping plate; 422. Sliding rod; 423. Limiting plate; 424. Positioning rod; 425. Elastic plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, please refer to Figures 1-10This invention relates to a multi-layer soil sampling device for highway construction, comprising a frame 14, a sliding plate 15 slidably connected to the outer wall of the frame 14, a motor 12 fixedly connected to the top of the sliding plate 15, a handle 16 fixedly connected to the top of the frame 14, a screw 13 rotatably connected to the side of the sliding plate 15 away from the handle 16, and a rotatably connected end of the motor 12 away from the handle 16 to the end of the screw 13 near the handle 16. The device also includes: The connecting mechanism 2 is installed on the outer wall of the frame 14. The connecting mechanism 2 includes a connecting plate 211 fixedly connected to the outer wall of the frame 14. A fixing cylinder 212 is fixedly connected to the end of the connecting plate 211 away from the frame 14. Scraping mechanism 3 is installed on the inner wall of connecting mechanism 2; Control mechanism 4 is installed on the outer wall of scraping mechanism 3; The operator holds the handle 16 to move the device to the detection point and starts the motor 12. When the motor 12 is working, it will drive the screw 13 to rotate.

[0023] The connecting mechanism 2 includes: Connecting component 21 is installed on the outer wall of frame 14; The receiving component 22 is installed on the inner wall of the connecting component 21; The soil carried out by the screw 13 falls into the material receiving assembly 22 through the scraping mechanism 3.

[0024] Example 2, please refer to Figures 2-11 This invention relates to a multi-layer soil sampling device for highway construction. Based on Embodiment 1, the scraping mechanism 3 includes: Positioning component 31 is installed on the outer wall of connecting component 21; Scraping component 32 is installed on the outer wall of positioning component 31; When the soil is squeezed and scraped by the component 32, the pressure generated by the soil will drive the scraping component 32 to rotate.

[0025] Control mechanism 4 includes: Control component 41 is installed on the outer wall of scraping component 32; Sliding component 42 is installed on the outer wall of positioning component 31; When the soil comes into contact with the sliding component 42, the pressure generated by the soil can drive the sliding component 42 to rotate.

[0026] The connecting assembly 21 includes a fixing rod 213 that is fixedly connected to the inner wall of the fixing cylinder 212; When the positioning component 31 is squeezed, it will rotate about 25 degrees around the fixed rod 213 as the rotation center.

[0027] The receiving assembly 22 includes a receiving cylinder 221 fixedly connected to the inner wall of the fixed cylinder 212, and a receiving cavity 222 is provided on the inner wall of the receiving cylinder 221; The soil scraped off by the scraping mechanism 3 will fall into the receiving chamber 222.

[0028] The positioning assembly 31 includes a rotating plate 311 rotatably connected to the end of the fixed rod 213 away from the fixed cylinder 212, and a plurality of positioning plates 312 are fixedly connected to the side of the rotating plate 311 away from the motor 12. Among them, several positioning plates 312 are arranged in a linear array along the outer wall of the rotating plate 311.

[0029] The scraping assembly 32 includes a rotating rod 321 rotatably connected to the inner wall of the positioning plate 312, and a plurality of peeling rods 322 rotatably connected to the outer wall of the rotating rod 321. Each rotating rod 321 has several peeling rods 322. A torsion spring 1 is provided at the intersection of the rotating rod 321 and the positioning plate 312, and a torsion spring 2 is provided at the intersection of the rotating rod 321 and the peeling rod 322.

[0030] The control component 41 includes several connecting bags 411 sleeved on the outer wall of the peeling rod 322, and several limiting plates 412 are fixedly connected to the outer wall of the peeling rod 322. The connecting bag 411 is made of elastic fiber blended fabric. A connecting bag 411 is set between every two peeling rods 322. When the connecting bag 411 is damaged, it can be removed from the peeling rod 322. By setting a rotating rod 321, when multiple connecting bags 411 are squeezed by the soil, one of the connecting bags 411 on the rotating rod 321 will always remain in an open state. In this way, the peeling rod 322 can rotate continuously, preventing a large amount of soil from sticking to the connecting bag 411, and also accelerating the soil falling speed.

[0031] The sliding assembly 42 includes a flip plate 421 rotatably connected to the outer wall of the rotating plate 311, a limit plate 423 fixedly connected to the outer wall of the rotating plate 311, a slide rod 422 slidably connected to the outer wall of the rotating plate 311, a positioning rod 424 fixedly connected to the side of the slide rod 422 near the rotating plate 311, and an elastic plate 425 fixedly connected to the outer wall of the positioning rod 424. A torsion spring is provided at the intersection of the flipping plate 421 and the rotating plate 311. In the initial state, the end of the flipping plate 421 is in contact with the sliding rod 422. When the soil comes into contact with the flipping plate 421, the resulting thrust will cause the flipping plate 421 to rotate, thereby causing the sliding rod 422 to slide. By setting the connecting bag 411, when the stripping rod 322 is inserted into the soil, some of the connecting bags 411 will shrink. During the shrinkage of the connecting bags 411, other connecting bags 411 will be pushed outward by the limiting plate 412. This will destroy the internal structure of the soil and cause the soil to fall into the receiving chamber 222 on its own. In this way, the flipping plate 421 is prevented from directly squeezing the soil, and the soil mixed with gravel is prevented from sliding and rubbing along the outer wall of the screw 13, reducing the abrasive wear of the gravel on the screw 13 and extending the service life of the screw 13.

[0032] One specific application of this embodiment is as follows: When the work begins, the operator moves the device to the test location by holding the handle 16. When the test location is reached, the operator fixes the bottom of the device to the ground. After fixing, the operator starts the motor 12 to make the sliding plate 15 slide downward. At the same time, the screw 13 will also start to rotate. As the screw 13 rotates continuously, it will enter the soil layer.

[0033] After drilling to the designated soil depth, the operator controls the screw 13 to rotate in the opposite direction, synchronously driving the sliding plate 15 to lift upwards; the soil attached to the outer wall of the screw 13 then comes into contact with the stripping rods 322, and multiple stripping rods 322 are directly embedded into the soil. As the embedment depth of the stripping rods 322 increases, the connecting bag 411 adheres to the soil surface, and the soil squeezes the connecting bag 411 to contract towards the rotating rod 321; the contracting connecting bag 411 causes the two stripping rods 322 to move closer together, tearing the soil and disrupting its dense structure. When some connecting bags 411 contract, their surface limiting plates 412 push against the limiting plates 412 of the adjacent peeling rods 322, causing another set of peeling rods 322 to expand outward, and the corresponding connecting bags 411 are stretched. After the expanded connecting bags 411 are subjected to increased soil pressure, they contract back towards the rotating rod 321, and the limiting plates 412 push the previous set of peeling rods to reopen. This cycle is repeated so that the multiple sets of connecting bags 411 on the same rotating rod 321 always maintain an alternating state of one set expanding and one set contracting.

[0034] If the soil is compacted, it will press against the outer wall of the tilting plate 421 when the screw 13 rotates. As the pressure on the tilting plate 421 increases, it rotates away from the rotating rod 321, and the torsion spring is compressed and stores energy. During the rotation of the tilting plate 421, it pushes the sliding rod 422 towards the limiting plate 423, and the sliding rod 422 squeezes the elastic plate 425 to deform and store energy. The protrusions on the surface of the sliding rod 422 simultaneously push against the peeling rod 322, causing the peeling rod 322 to rotate. The rotating rod 321 rotates synchronously with the peeling rod, pushing the soil towards the inner wall of the fixed cylinder 212, peeling off the soil from the outer wall of the screw 13. The peeled soil falls into the receiving chamber 222. After the soil is peeled off, the operator takes out the soil sample from the receiving chamber 222, resets the sampling depth, and uses the screw 13 to take soil again. Repeating the above process can complete the multi-layer soil sampling.

[0035] By setting up connecting bags 411, when the stripping rod 322 is inserted into the soil, some connecting bags 411 will shrink. During the shrinkage of connecting bags 411, other connecting bags 411 will be pushed outward by the limiting plate 412. This will destroy the internal structure of the soil and cause the soil to fall into the receiving chamber 222 on its own. In this way, the flipping plate 421 is prevented from directly squeezing the soil, and the soil mixed with gravel is prevented from sliding and rubbing along the outer wall of the screw 13, reducing the abrasive wear of the gravel on the screw 13 and extending the service life of the screw 13.

[0036] By setting a rotating rod 321, when multiple connecting bags 411 are squeezed by the soil, one of the connecting bags 411 on the rotating rod 321 will always remain in an unfolded state. In this way, the peeling rod 322 can rotate continuously, preventing a large amount of soil from sticking to the connecting bags 411, and also accelerating the falling speed of the soil.

[0037] By setting the flip plate 421, when the soil is too compacted, as the screw 13 rotates, the soil will come into contact with the surface of the flip plate 421. The flip plate 421 will be pushed by the soil, thus rotating in the direction of moving closer to the limiting plate 423. At this time, the rotating limiting plate 423 will push the sliding rod 422 to slide. The sliding sliding rod 422 will cause multiple rotating rods 321 to rotate. During the rotation, the rotating rods 321 will apply a pushing force to the soil in the direction of moving closer to the fixed cylinder 212 through the peeling rod 322, so that the soil on the screw 13 falls off. In this way, it is prevented that the overly compacted soil cannot fall off and cause the device to jam. At the same time, it can also prevent the traditional rigid scraper from squeezing the soil when the soil is relatively wet, causing a large amount of water to be released, thus improving the accuracy of the detection.

[0038] By setting multiple connecting bags 411, the increased compression of the connecting bags 411 will cause them to contract and force the other connecting bags 411 to unfold again. In this way, the harder substances in the soil will not directly exert pressure on the connecting bags 411, and the single connecting bag 411 will not be overloaded, unable to deform, and thus tear and break.

[0039] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only to the technical solutions and their full scope and equivalents.

Claims

1. A multi-layer soil sampling device for highway construction, comprising a frame (14), a sliding plate (15) slidably connected to the outer wall of the frame (14), a motor (12) fixedly connected to the top of the sliding plate (15), a handle (16) fixedly connected to the top of the frame (14), a screw (13) rotatably connected to the side of the sliding plate (15) away from the handle (16), and the end of the motor (12) away from the handle (16) being rotatably connected to the end of the screw (13) near the handle (16), characterized in that, Also includes: The connecting mechanism (2) is installed on the outer wall of the frame (14). The connecting mechanism (2) includes a connecting plate (211) fixedly connected to the outer wall of the frame (14). A fixing cylinder (212) is fixedly connected to one end of the connecting plate (211) away from the frame (14). A scraping mechanism (3) is installed on the inner wall of the connecting mechanism (2); Control mechanism (4), which is installed on the outer wall of scraping mechanism (3); The operator holds the handle (16) to move the device to the detection point and starts the motor (12). When the motor (12) is working, it will drive the screw (13) to rotate.

2. The multi-layer soil sampling device for highway construction according to claim 1, characterized in that: The connecting mechanism (2) includes: A connecting component (21) is installed on the outer wall of the frame (14); A receiving assembly (22) is installed on the inner wall of the connecting assembly (21); The soil carried out by the screw (13) falls into the material receiving assembly (22) through the scraping mechanism (3).

3. The multi-layer soil sampling device for highway construction according to claim 2, characterized in that: The scraping mechanism (3) includes: Positioning component (31), which is installed on the outer wall of connecting component (21); A scraping assembly (32) is installed on the outer wall of the positioning assembly (31); When the soil is squeezed and scraped by the component (32), the pressure generated by the soil will drive the scraping component (32) to rotate.

4. The multi-layer soil sampling device for highway construction according to claim 3, characterized in that: The control mechanism (4) includes: A control component (41) is installed on the outer wall of the scraping component (32); A sliding component (42) is mounted on the outer wall of the positioning component (31); When the soil comes into contact with the sliding component (42), the pressure generated by the soil can drive the sliding component (42) to rotate.

5. A multi-layer soil sampling device for highway construction according to claim 4, characterized in that: The connecting assembly (21) includes a fixing rod (213) that is fixedly connected to the inner wall of the fixing cylinder (212); When the positioning component (31) is squeezed, it will rotate about 25 degrees around the fixed rod (213) as the rotation center.

6. A multi-layer soil sampling device for highway construction according to claim 5, characterized in that: The receiving assembly (22) includes a receiving cylinder (221) fixedly connected to the inner wall of the fixed cylinder (212), and a receiving cavity (222) is provided on the inner wall of the receiving cylinder (221). The soil scraped off by the scraping mechanism (3) will fall into the receiving chamber (222).

7. A multi-layer soil sampling device for highway construction according to claim 6, characterized in that: The positioning assembly (31) includes a rotating plate (311) rotatably connected to the end of the fixed rod (213) away from the fixed cylinder (212), and a plurality of positioning plates (312) are fixedly connected to the side of the rotating plate (311) away from the motor (12). Among them, several positioning plates (312) are arranged in a linear array along the outer wall of the rotating plate (311).

8. A multi-layer soil sampling device for highway construction according to claim 7, characterized in that: The scraping assembly (32) includes a rotating rod (321) rotatably connected to the inner wall of the positioning plate (312), and a plurality of peeling rods (322) rotatably connected to the outer wall of the rotating rod (321). Each rotating rod (321) has several peeling rods (322), and a torsion spring is provided at the intersection of the rotating rod (321) and the positioning plate (312), and a torsion spring is provided at the intersection of the rotating rod (321) and the peeling rod (322).

9. A multi-layer soil sampling device for highway construction according to claim 8, characterized in that: The control component (41) includes a plurality of connecting bags (411) sleeved on the outer wall of the peeling rod (322), and a plurality of limiting plates (412) are fixedly connected to the outer wall of the peeling rod (322). The connecting bag (411) is made of elastic fiber blended fabric. A connecting bag (411) is provided between every two peeling rods (322). When the connecting bag (411) is damaged, the connecting bag (411) can be removed from the peeling rod (322).

10. A multi-layer soil sampling device for highway construction according to claim 7, characterized in that: The sliding assembly (42) includes a flip plate (421) rotatably connected to the outer wall of the rotating plate (311), a limit plate (423) fixedly connected to the outer wall of the rotating plate (311), a slide rod (422) slidably connected to the outer wall of the rotating plate (311), a positioning rod (424) fixedly connected to the side of the slide rod (422) near the rotating plate (311), and an elastic plate (425) fixedly connected to the outer wall of the positioning rod (424). Among them, a torsion spring is provided at the junction of the flipping plate (421) and the rotating plate (311). In the initial state, the end of the flipping plate (421) is in contact with the sliding rod (422). When the soil comes into contact with the flipping plate (421), the generated thrust will cause the flipping plate (421) to rotate, thereby causing the sliding rod (422) to slide.

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