Drilling and soil sampling device for roadbed compactness detection

Abstract

The utility model provides a drilling soil sampling device for roadbed compactness detection, a twist drill is sleeved in the middle of a sheath, two ends of the twist drill penetrate through two ends of the sheath, the twist drill is connected with the lower end of a rotating handle through an upper end connecting block, a collecting mechanism is arranged on the inner side of the upper end of the sheath, and the collecting mechanism is detachably connected with the upper end of the sheath through a lower end fixing column of the collecting mechanism. A scraping rod is arranged on the inner side of the collecting disc, the scraping rod extends into the inner side of a thread of the twist drill and is used for scraping a soil sample taken by the twist drill, a fixing mechanism is arranged on the outer side of the sheath, and the sheath is arranged above a soil sampling point through the fixing mechanism. The problems that a drilling and soil sampling device is not easy to disassemble and replace and soil sampling is inconvenient are solved.

Description

Technical Field

[0001] This utility model relates to the field of roadbed construction testing, and in particular to a drilling and soil sampling device for testing the compaction degree of roadbed. Background Technology

[0002] The roadbed is the foundation of a track or pavement, a geotechnical structure formed through excavation or filling. Its main function is to provide the necessary conditions for track or pavement laying and train or vehicle operation, and to bear the static and dynamic loads of the track, locomotives, rolling stock, pavement, and traffic loads, while simultaneously transferring and dispersing these loads deep into the ground. In longitudinal profile, the roadbed must ensure the required elevation of the line; in horizontal plane, the roadbed connects with bridges and tunnels to form a complete and continuous line. In civil engineering, the roadbed plays a crucial role in terms of construction volume, land area, and investment. After roadbed compaction, it is necessary to sample and test the compacted soil; therefore, a drilling and soil sampling device for roadbed compaction testing is required.

[0003] Existing drilling and soil sampling devices for roadbed compaction testing are difficult to disassemble and replace due to their integral auger structure. Furthermore, the sampling process requires manual scraping of soil from the auger grooves on the outer side of the auger, which increases the labor intensity of the workers. Therefore, there is an urgent need for a drilling and soil sampling device for roadbed compaction testing. Utility Model Content

[0004] The main purpose of this utility model is to provide a drilling and soil sampling device for roadbed compaction testing, which solves the problems of the drilling and soil sampling device being difficult to disassemble and replace and the soil sampling being inconvenient.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a drilling and soil sampling device for roadbed compaction testing, wherein an auger is sleeved in the middle of the protective sleeve, with its two ends penetrating both ends of the protective sleeve; the auger is connected to the lower end of the throttle handle through an upper connecting block; a collection mechanism is provided on the inner side of the upper end of the protective sleeve; the collection mechanism is detachably connected to the upper end of the protective sleeve through a lower fixing post; a scraper is provided on the inner side of the collection disc, which extends into the inner side of the auger thread to scrape off the soil sample taken by the auger; a fixing mechanism is provided on the outer side of the protective sleeve, and the protective sleeve is positioned above the soil sampling point through the fixing mechanism.

[0006] In the preferred embodiment, the outer ring of the upper connecting block of the auger is evenly provided with multiple connecting keys, and the lower end of the throttle is provided with multiple corresponding connecting grooves. The auger is engaged with the throttle through the connecting keys and connecting grooves, which is used to limit the relative rotation between the auger and the throttle.

[0007] The outer diameter of the connecting block and the inner diameter of the lower end of the throttle are interference fit.

[0008] In the preferred embodiment, the upper end of the sheath is provided with a stepped surface, and the stepped surface is provided with an embedding hole. The lower surface of the collection tray abuts against the stepped surface, and the fixing post is inserted into the embedding hole to form a detachable connection structure. The embedding hole and the fixing post correspond one-to-one, and the number of them is at least two.

[0009] In a preferred embodiment, the height of the outer edge of the collection tray is greater than the distance from the stepped surface to the upper end of the sheath, for removing the collection tray.

[0010] In a preferred embodiment, the diameter of the first through hole at the lower end of the sheath is equal to the maximum outer diameter of the auger, and the middle part of the collecting plate is provided with a second through hole, the diameter of which is equal to the diameter of the first through hole. The auger is disposed in the first and second through holes.

[0011] In a preferred embodiment, the fixing mechanism includes a connecting frame, a rotating column, a support sleeve, and a fixing rod. The fixing mechanism is connected to the outer wall of the sheath through the connecting frame. The connecting frame contains a rotating column. The upper end of the support sleeve is rotatably connected to the rotating column, and the lower end is threadedly connected to the upper end of the fixing rod.

[0012] In the preferred embodiment, the fixing mechanism is evenly arranged around the perimeter of the sheath, and there are three of them. The lower ends of the fixing rods are symmetrically inserted into the ground to form a triangular fixing structure.

[0013] In a preferred embodiment, the scraper rod has an inclined surface at its top end facing the direction of rotation and upward movement of the auger.

[0014] Alternatively, the scraper is a hollow open slot with its opening facing the direction of rotation and upward movement of the auger. A soil receiving plate is also provided on the outer side of the upper end of the sheath. Through holes are provided on the side wall of the collection plate at the tail end of the scraper and the side wall of the sheath, respectively, to connect the collection plate and the soil receiving plate.

[0015] In the preferred embodiment, the lower end of the soil receiving plate is provided with an internal thread, and the corresponding location on the outer wall of the sheath is provided with an external thread, and the soil receiving plate is connected to the outer thread of the sheath.

[0016] In a preferred embodiment, the throttle has an S-shaped structure, with the upper grip connected to the lower throttle via a T-shaped protrusion ring.

[0017] This utility model provides a drilling and soil sampling device for roadbed compaction testing. An auger is fitted in the middle of a protective sleeve, with both ends penetrating both ends of the sleeve. The auger is connected to the lower end of the throttle handle via an upper connecting block. A collection mechanism is provided on the inner side of the upper end of the protective sleeve, and this mechanism is detachably connected to the upper end of the protective sleeve via a lower fixing post. A scraper is provided on the inner side of the collection disc, extending into the inner thread of the auger to scrape away the soil sample taken by the auger. A fixing mechanism is provided on the outer side of the protective sleeve, and the protective sleeve is positioned above the soil sampling point via this fixing mechanism. Rotating the throttle handle scrapes away the soil sample from the inner surface of the rotating auger. The auger and throttle handle, and the collection disc and protective sleeve are all detachable structures, solving the problems of difficult disassembly and replacement of drilling and soil sampling devices and inconvenient soil sampling. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is an overall appearance and structural diagram of Embodiment 1 of this utility model;

[0020] Figure 2 This is a cross-sectional view of the overall device according to Embodiment 1 of this utility model;

[0021] Figure 3 This is the overall structural diagram of Embodiment 1 of this utility model under explosion mode;

[0022] Figure 4 This is a diagram showing the connection structure between the spiral rotor and the throttle handle in Embodiment 1 of this utility model;

[0023] Figure 5 This is a cross-sectional view of the throttle portion of Embodiment 1 of this utility model;

[0024] Figure 6 This is a disassembled structural diagram of the fixing mechanism in Embodiment 1 of this utility model;

[0025] Figure 7 This is the overall appearance and structural diagram of Embodiment 2 of this utility model;

[0026] Figure 8 This is a partial cross-sectional view of Embodiment 2 of this utility model;

[0027] Figure 9 This is a disassembled structural diagram of the soil receiving plate and sheath in Embodiment 2 of this utility model.

[0028] In the diagram: 1. Spiral drill; 101. Connecting block; 102. Connecting key; 2. Sheath; 201. Embedded hole; 202. First through hole; 203. External thread; 3. Rotary handle; 301. Connecting groove; 302. T-shaped protruding ring; 303. Collecting mechanism; 4. Fixing column; 401. Collecting plate; 402. Scraper; 403. Second through hole; 404. Fixing mechanism; 5. Connecting frame; 501. Rotating column; 502. Support sleeve; 503. Fixing rod; 504. Soil receiving plate; 6. Internal thread; 601. Detailed Implementation

[0029] Example 1

[0030] like Figures 1-6As shown, a drilling and soil sampling device for roadbed compaction testing includes an auger 1 fitted in the middle of a sheath 2, with both ends of the auger 1 penetrating both ends of the sheath 2. The auger 1 is connected to the lower end of a throttle 3 via an upper connecting block 101. A collection mechanism 4 is provided on the inner side of the upper end of the sheath 2. The collection mechanism 4 is detachably connected to the upper end of the sheath 2 via a lower fixing post 401. A scraper 403 is provided on the inner side of a collection disc 402. The scraper 403 extends into the inner thread of the auger 1 and is used to scrape away the soil sample taken by the auger 1. A fixing mechanism 5 is provided on the outer side of the sheath 2, and the sheath 2 is positioned above the soil sampling point via the fixing mechanism 5.

[0031] This application uses a spiral drill 1 to drill soil under a designated sampling spiral, and forms a soil sampling channel with the inner wall of the sheath 2 through the threaded groove. The reverse rotation brings the soil sample to be tested out of the ground, and the scraper 403 scrapes the soil sample away from the inner surface of the spiral drill 1 thread and drops it into the collection tray 402. The collection tray 402 has a detachable tenon and mortise structure, which makes it easy to completely remove the soil sample for testing. The upper end of the spiral drill 1 and the handle 3 are also detachably connected, which makes it easy to replace the spiral drill 1 and facilitates the maintenance and replacement of the device.

[0032] In the preferred embodiment, the upper connecting block 101 of the auger drill 1 is uniformly provided with a plurality of connecting keys 102 on the outer ring, and the lower end of the throttle 3 is provided with a plurality of corresponding connecting grooves 301. The auger drill 1 is engaged with the throttle 3 through the connecting keys 102 and the connecting grooves 301, which is used to limit the relative rotation between the auger drill 1 and the throttle 3.

[0033] The outer diameter of the connecting block 101 and the inner diameter of the lower end of the throttle 3 are interference fit.

[0034] The auger 1 is ensured to rotate with the throttle 3 by multiple connecting keys 102 without relative rotation. Its interference fit structure restricts the vertical relative movement between the two. The keyway connection structure is simple, safe and reliable, ensuring the reliability of the transmission between the throttle 3 and the auger 1 while facilitating disassembly and assembly.

[0035] In the preferred embodiment, the upper end of the sheath 2 is provided with a stepped surface, and an embedding hole 201 is provided on the stepped surface. The lower surface of the collection tray 402 abuts against the stepped surface, and the fixing post 401 is inserted into the embedding hole 201 to form a detachable connection structure. The embedding hole 201 corresponds one-to-one with the fixing post 401, and the number of them is at least two.

[0036] In a preferred embodiment, the height of the outer edge of the collection tray 402 is greater than the distance from the stepped surface to the upper end of the sheath 2, which is used to remove the collection tray 402.

[0037] The collection tray 402 restricts its relative rotation with the sheath 2 through the connection of multiple pairs of fixing posts 401 and embedding holes 201, and its protruding outer edge serves as a gripping part for easy and quick disassembly and assembly.

[0038] In a preferred embodiment, the diameter of the first through hole 202 at the lower end of the sheath 2 is equal to the maximum outer diameter of the auger drill 1, and the middle part of the collecting plate 402 is provided with a second through hole 404, the diameter of the second through hole 404 is equal to the diameter of the first through hole 202, and the auger drill 1 is disposed in the first through hole 202 and the second through hole 404.

[0039] The spiral space formed by the inner surface of the first through hole 202 and the inner surface of the spiral drill 1 forms a soil sampling channel. The size of the two through holes is closely matched to prevent the soil sample from falling. Similarly, the second through hole 404 allows the soil sample scraped by the scraper 403 to fall completely into the collection tray 402, preventing it from falling through the first through hole 202 and the second through hole 404.

[0040] In a preferred embodiment, the fixing mechanism 5 includes a connecting frame 501, a rotating column 502, a support sleeve 503, and a fixing rod 504. The fixing mechanism 5 is connected to the outer wall of the sheath 2 through the connecting frame 501. The connecting frame 501 is provided with a rotating column 502. The upper end of the support sleeve 503 is rotatably connected to the rotating column 502, and the lower end is threadedly connected to the upper end of the fixing rod 504.

[0041] In the preferred embodiment, the fixing mechanism 5 is evenly arranged around the sheath 2, and there are three of them. The lower ends of the fixing rods 504 are symmetrically inserted into the ground to form a triangular fixing structure.

[0042] When in use, adjust the height of the corresponding fixing mechanism 5 according to the flatness of the surrounding land at the test point. The method is to rotate the fixing rod 504 and adjust the length of its upper threaded part extending out of the lower end of the support sleeve 503, thereby adjusting the relative support height of the sheath 2 at that point. After the three fixing mechanisms 5 are adjusted, insert them obliquely into the corresponding soil surface to form a support structure.

[0043] In the preferred embodiment, the scraper 403 has an inclined surface at its top end facing the upward rotation direction of the auger 1, which facilitates the scraping of soil samples.

[0044] In the preferred embodiment, the throttle 3 has an S-shaped structure, with its upper grip 302 rotatably connected to the lower throttle 3 via a T-shaped protruding ring 303. The relative rotation structure at the grip 302 facilitates worker gripping, and the S-shaped structure extends the rotation arm, forming a force-saving rotation structure.

[0045] Example 2

[0046] Further explanation in conjunction with Example 1, such as Figures 7-9 The structure shown is as follows: Alternatively, the scraper 403 is a hollow open slot with its opening facing the rotational upward direction of the auger 1. The outer side of the upper end of the sheath 2 is also provided with a soil receiving plate 6. The side wall of the collection plate 402 at the tail end of the scraper 403 and the side wall of the sheath 2 are respectively provided with through holes for connecting the collection plate 402 and the soil receiving plate 6.

[0047] In the preferred embodiment, the lower end of the soil receiving plate 6 is provided with an internal thread 601, and the corresponding location on the outer wall of the sheath 2 is provided with an external thread 203, and the soil receiving plate 6 is threadedly connected to the outer side of the sheath 2.

[0048] The soil receiving plate 6 is connected to the internal space of the collection plate 402 through the corresponding through holes on the side wall of the collection plate 402 and the side wall of the protective sleeve 2 via the scraper 403. The soil sample scraped by the scraper 403 first enters the soil receiving plate 6 through the through hole. After it is full, the subsequent soil sample continues to be stored in the collection plate 402, realizing simple separation of the surface and inner layers of the soil sample, which is convenient for soil stratification analysis. The threaded structure at the lower end of the soil receiving plate 6 facilitates the accurate positioning of the height of the soil sample in the through hole and makes it easy to disassemble and assemble.

[0049] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A drilling and soil sampling device for testing the compaction degree of roadbed, characterized in that: The auger (1) is fitted in the middle of the sheath (2), with its two ends penetrating both ends of the sheath (2). The auger (1) is connected to the lower end of the throttle (3) through the upper connecting block (101). The sheath (2) has a collection mechanism (4) on the inner side of the upper end. The collection mechanism (4) is detachably connected to the upper end of the sheath (2) through its lower fixing post (401). The collection disc (402) has a scraper (403) on the inner side. The scraper (403) extends into the inner side of the thread of the auger (1) and is used to scrape the soil sample taken by the auger (1). The sheath (2) has a fixing mechanism (5) on the outer side. The sheath (2) is set above the soil sampling point through the fixing mechanism (5).

2. The drilling and soil sampling device for roadbed compaction testing according to claim 1, characterized in that: The upper connecting block (101) of the auger (1) is uniformly provided with multiple connecting keys (102) on the outer ring, and the lower end of the throttle (3) is provided with multiple corresponding connecting grooves (301). The auger (1) is engaged with the throttle (3) through the connecting keys (102) and connecting grooves (301) to limit the relative rotation between the auger (1) and the throttle (3). The outer diameter of the connecting block (101) and the inner diameter of the lower end of the throttle (3) are interference fit.

3. The drilling and soil sampling device for roadbed compaction testing according to claim 1, characterized in that: The upper end of the sheath (2) is provided with a stepped surface, and an embedding hole (201) is provided on the stepped surface. The lower surface of the collection tray (402) abuts against the stepped surface, and the fixing post (401) is inserted into the embedding hole (201) to form a detachable connection structure. The embedding hole (201) corresponds one-to-one with the fixing post (401), and there are at least two of them.

4. The drilling and soil sampling device for roadbed compaction testing according to claim 3, characterized in that: The outer edge height of the collection tray (402) is greater than the distance from the stepped surface to the upper end of the sheath (2), which is used to remove the collection tray (402).

5. The drilling and soil sampling device for roadbed compaction testing according to claim 1, characterized in that: The diameter of the first through hole (202) at the lower end of the sheath (2) is equal to the maximum outer diameter of the auger drill (1). The middle part of the collection plate (402) is provided with a second through hole (404), the diameter of the second through hole (404) is equal to the diameter of the first through hole (202), and the auger drill (1) is set in the first through hole (202) and the second through hole (404).

6. The drilling and soil sampling device for roadbed compaction testing according to claim 1, characterized in that: The fixing mechanism (5) includes a connecting frame (501), a rotating column (502), a support sleeve (503), and a fixing rod (504). The fixing mechanism (5) is connected to the outer wall of the sheath (2) through the connecting frame (501). The connecting frame (501) is provided with a rotating column (502). The upper end of the support sleeve (503) is rotatably connected to the rotating column (502), and the lower end is threadedly connected to the upper end of the fixing rod (504).

7. The drilling and soil sampling device for roadbed compaction testing according to claim 6, characterized in that: The fixing mechanism (5) is evenly arranged around the sheath (2), and there are three of them. The lower end of the fixing rod (504) is symmetrically inserted into the ground to form a triangular fixing structure.

8. The drilling and soil sampling device for roadbed compaction testing according to claim 1, characterized in that: The scraper (403) has an inclined surface at its top end in the direction of rotation and upward movement of the auger (1); Alternatively, the scraper (403) is a hollow open slot with its opening facing the direction of rotation and upward movement of the auger (1). The outer side of the upper end of the sheath (2) is also provided with a soil receiving plate (6). The side wall of the collection plate (402) at the tail end of the scraper (403) and the side wall of the sheath (2) are provided with through holes to connect the collection plate (402) and the soil receiving plate (6).

9. The drilling and soil sampling device for roadbed compaction testing according to claim 8, characterized in that: The soil receiving plate (6) has an internal thread (601) at its lower end, and the outer wall of the sheath (2) has an external thread (203) at the corresponding location. The soil receiving plate (6) is connected to the outer thread of the sheath (2).

10. The drilling and soil sampling device for roadbed compaction testing according to claim 1, characterized in that: The throttle (3) has an S-shaped structure, and its upper handle (302) is rotatably connected to the lower throttle (3) through a T-shaped protrusion (303).

Images