Geotechnical engineering investigation drilling machine soil sampler and soil sampling method

Abstract

The invention discloses a geotechnical engineering investigation drilling machine soil sampler and a soil sampling method, relates to the technical field of geotechnical engineering investigation detection equipment, and is suitable for sampling soil such as sandy soil, sludge and soft soil. According to the technical scheme, the device comprises a sampling barrel, a sampling mechanism is fixedly connected to the interior of the sampling barrel, a sampling drill rod is arranged on the lower portion of the sampling mechanism, a collecting cavity is formed in the sampling barrel, a soil scraping plate is arranged on the upper portion of the collecting cavity, the soil scraping plate is rotationally connected with the sampling barrel, and the soil scraping plate is in threaded connection with the sampling drill rod. The soil scraping plate arranged on the upper portion of the collecting cavity can scrape a soil sample carried by the sampling drill rod, the scraped soil sample can fall on the surface of the sieve plate, due to the fact that the soil scraping plate is in threaded connection with the sampling drill rod, the soil scraping plate can be driven by the sampling drill rod to rotate when scraping the soil sample, and then the sieve plate arranged on the lower portion can be driven to rotate. Large particles and impurities in the soil sample can be filtered through rotation of the sieve plate.

Description

Technical Field

[0001] The invention relates to the technical field of geotechnical engineering investigation and detection equipment, and in particular to a geotechnical engineering investigation drilling rig soil sampling device and a soil sampling method, which are suitable for sampling sand, silt, soft soil and the like. Background Art

[0002] With the advancement of science and technology, traditional soil sampling methods can no longer meet the requirements of modern geotechnical engineering for sampling accuracy and efficiency. Therefore, a geotechnical engineering survey drill rig soil sampler has been developed, which can go deep underground to collect representative soil samples. These samples are crucial for understanding geological structures, evaluating foundation stability, and monitoring soil quality. Through advanced drilling technology and sampling methods, the geotechnical engineering survey drill rig soil sampler has realized the automation and intelligence of the sampling process, greatly improved the sampling efficiency and accuracy, and provided reliable data support for geotechnical engineering surveys.

[0003] However, in actual use of the existing device, when the soil sampling drill bit is sampling soil, there may be impurities in the soil sample, and depending on the different soil sampling locations, agglomerated soil samples may appear in the collected samples. In order to perform preliminary processing on the soil samples, a geotechnical engineering survey drill rig soil sampling device and a soil sampling method are proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that when a soil sampling drill is used to sample soil, impurities and the like are inevitably present in the soil sample, and depending on the sampling position, agglomerated soil samples may appear in the sample collected, which brings trouble to the subsequent sample processing. While sampling, in order to perform preliminary processing on the soil sample, a geotechnical engineering survey drill soil sampling device and soil sampling method are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A soil sampling device and soil sampling method for a geotechnical engineering survey drill rig, comprising a sampling barrel, a sampling mechanism fixedly connected inside the sampling barrel, a sampling drill rod arranged at the lower part of the sampling mechanism, a collecting chamber arranged inside the sampling barrel, a scraper plate arranged at the upper part of the collecting chamber, the scraper plate and the sampling barrel are rotatably connected, the scraper plate and the sampling drill rod are threadedly connected, two vibration shells are symmetrically arranged at the upper part of the scraper plate, a third motor is arranged inside the vibration shell, a first transmission wheel is arranged at the output end of the third motor, the first transmission wheel is transmission-connected with a transmission belt, the transmission belt is transmission-connected with a second transmission wheel at a side away from the first transmission wheel, a second eccentric shaft is fixedly connected to a side of the second transmission wheel close to the third motor, the second eccentric shaft is rotationally connected to a connecting member, a connecting rod is rotationally connected to the bottom of the connecting member, a sieve plate is fixedly connected to the bottom of the connecting rod, a rotating mechanism is arranged at the bottom of the sampling barrel, a soil-breaking drill bit is arranged at the lower part of the rotating mechanism, and a control mechanism is arranged inside the soil-breaking drill bit;

[0007] After the sampling drill rod drills into the ground to obtain soil samples, the sampling drill rod is driven to move upward by the sampling mechanism. During the upward movement of the sampling drill rod, the threaded scraper plate scrapes off the soil sample carried by the sampling drill rod, and the soil sample falls onto the surface of the sieve plate. Then the third motor is started, and the second eccentric shaft is driven to rotate by the third motor. The rotation of the second eccentric shaft drives the rotating connecting piece to rotate, and the rotation of the connecting piece drives the connecting rod to move up and down, thereby driving the fixedly connected sieve plate to vibrate. The agglomerated soil sample is broken by the vibration of the sieve plate and falls into the bottom of the collecting chamber. Two movable plates are provided on one side of the collecting chamber, and the upper and lower parts of the collecting chamber can be opened by the movable plates.

[0008] The above technical solution further includes:

[0009] The sampling mechanism comprises a sampling shell fixedly connected to the inside of the sampling cylinder, a first motor is arranged in the sampling shell, and a sampling component is arranged at the output end of the first motor.

[0010] The sampling assembly includes a second gear arranged at the output end of the first motor, the second gear is meshedly connected with a third gear, the third gear is rotationally connected to the sampling housing, the third gear is threadedly connected with a threaded rod, and the bottom of the threaded rod is fixedly connected to a sampling drill rod.

[0011] The rotating mechanism comprises a rotating shell fixedly connected to the bottom of the sampling tube, a fourth motor is arranged inside the rotating shell, and a rotating assembly is arranged at the output end of the fourth motor.

[0012] The rotating assembly includes a sixth gear disposed at the output end of the fourth motor, the lower portion of the sixth gear is meshedly connected with the first gear, the first gear is rotationally connected to the rotating housing, and a soil-breaking drill bit is fixedly connected to the bottom of the sampling barrel.

[0013] The control mechanism includes a control housing fixedly connected to the earth-breaking drill bit, a second motor is arranged inside the control housing, a control component is arranged at the output end of the second motor, and a notch is arranged at the bottom of the control housing, and the diameter of the notch is larger than the diameter of the sampling drill rod.

[0014] The control component includes a fourth gear arranged at the output end of the second motor, the lower part of the fourth gear is meshedly connected with a fifth gear, the bottom of the fifth gear is rotatably connected with five first eccentric shafts, the lower parts of the five first eccentric shafts are rotatably connected with a movable baffle, and the movable baffle is rotatably connected to the control housing.

[0015] A top cover is fixedly connected to the top of the sampling cylinder, and two handles are arranged on the upper part of the top cover.

[0016] A method for using a geotechnical engineering survey drilling rig soil sampler comprises the following steps:

[0017] Step 1: Bring the device to the sampling location, place the device vertically on the ground, start the rotating mechanism, drive the earth-breaking drill bit to rotate through the rotating mechanism, and break the soil through the earth-breaking drill bit and insert it into the ground;

[0018] Step 2: After the earth-breaking drill bit is controlled to move downward to the sampling depth, the control mechanism is started to open the notch at the bottom of the earth-breaking drill bit through the control mechanism;

[0019] Step 3: Start the sampling mechanism, and drive the sampling drill rod at the bottom to move downward through the sampling mechanism. The sampling drill rod moves downward and extends from the bottom of the earth-breaking drill bit to take samples;

[0020] Step 4: Control the sampling drill rod to move upward into the sampling tube. During the upward movement of the sampling drill rod, the threaded scraper plate scrapes off the soil sample carried by the sampling drill rod, and the scraped soil sample falls on the sieve plate. Then start the vibration mechanism, and the sieve plate is driven by the vibration mechanism to vibrate up and down to break up the agglomerated soil sample in the sample. Finally, the large particles and impurities in the soil sample are filtered out through the sieve plate.

[0021] The present invention has the following beneficial effects:

[0022] 1. In the present invention, after the device completes sampling, the sampling drill rod can be driven to move up and back to the inside of the sampling tube through the sampling mechanism. During the upward movement of the sampling drill rod, the scraper plate arranged on the upper part of the collecting chamber can scrape off the soil sample carried by the sampling drill rod, and the scraped soil sample can fall onto the surface of the sieve plate. Since the scraper plate and the sampling drill rod are threadedly connected, the scraper plate can rotate under the drive of the sampling drill rod when scraping off the soil sample, and then the sieve plate arranged at the lower part can be driven to rotate. The large particles and impurities in the soil sample can be filtered out through the rotation of the sieve plate, and the sieve plate can also be driven to vibrate up and down through the vibration mechanism while rotating, so that the agglomerated soil sample can be broken up, which is convenient for subsequent processing, and the screening effect of the sieve plate can be further improved through vibration.

[0023] 2. In the present invention, the sampling drill rod is arranged inside the sampling tube. When sampling, the soil is first broken by the soil-breaking drill bit. When the soil-breaking drill bit moves to the preset sampling depth, the movable baffle can be driven to rotate by the control mechanism, thereby opening the notch at the bottom of the control shell. At this time, the sampling drill rod is driven downward by the sampling mechanism to sample the soil at the preset depth, which effectively avoids the mixing of soil samples from multiple soil layers and affects the sampling effect of the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a geotechnical engineering survey drilling rig soil sampler proposed by the present invention;

[0025] Figure 2 It is a schematic diagram of the overall structure of the device in the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the sampling tube in the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the sampling shell in the present invention;

[0028] Figure 5 A top view of the control mechanism in the present invention;

[0029] Figure 6 It is a schematic diagram of the internal structure of the control housing in the present invention;

[0030] Figure 7 It is a schematic diagram of the internal structure of the vibration housing in the present invention;

[0031] Figure 8 It is a schematic diagram of the internal structure of the rotating shell in the present invention.

[0032] In the figure: 1. sampling tube; 2. rotating shell; 3. earth-breaking drill bit; 4. sampling shell; 5. threaded rod; 6. sampling drill rod; 7. collecting chamber; 8. sieve plate; 9. scraper plate; 10. vibration shell; 11. control shell; 12. first gear; 13. first motor; 14. second gear; 15. third gear; 16. second motor; 17. fourth gear; 18. fifth gear; 19. movable baffle; 20. first eccentric shaft; 21. third motor; 22. first transmission wheel; 23. second transmission wheel; 24. transmission belt; 25. second eccentric shaft; 26. connecting piece; 27. connecting rod; 28. top cover; 29. ​​fourth motor; 30. sixth gear. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] like Figures 1 - 8 As shown, a soil sampling device and soil sampling method for geotechnical engineering survey drilling rig proposed by the present invention include a sampling barrel 1, a sampling mechanism is fixedly connected inside the sampling barrel 1, a sampling drill rod 6 is arranged at the lower part of the sampling mechanism, a collecting chamber 7 is arranged inside the sampling barrel 1, a scraper plate 9 is arranged at the upper part of the collecting chamber 7, the scraper plate 9 is rotatably connected to the sampling barrel 1, the scraper plate 9 is threadedly connected to the sampling drill rod 6, two vibration shells 10 are symmetrically arranged on the upper part of the scraper plate 9, a third motor 21 is arranged inside the vibration shell 10, and a first sensor 21 is arranged at the output end of the third motor 21. The driving wheel 22 is connected to the first transmission wheel 22 with a transmission belt 24, the transmission belt 24 is connected to the second transmission wheel 23 on the side away from the first transmission wheel 22, the second transmission wheel 23 is fixedly connected to the second eccentric shaft 25 on the side close to the third motor 21, the second eccentric shaft 25 is rotatably connected to the connecting member 26, the bottom of the connecting member 26 is rotatably connected to a connecting rod 27, the bottom of the connecting rod 27 is fixedly connected to a sieve plate 8, a rotating mechanism is provided at the bottom of the sampling tube 1, a ground-breaking drill bit 3 is provided at the lower part of the rotating mechanism, and a control mechanism is provided inside the ground-breaking drill bit 3.

[0036] After the sampling drill rod 6 drills into the ground to obtain the soil sample, the sampling drill rod 6 is driven to move upward by the sampling mechanism. During the upward movement of the sampling drill rod 6, the threaded scraper plate 9 scrapes the soil sample in the sampling drill rod 6, and the soil sample falls onto the surface of the sieve plate 8. Then the third motor 21 is started, and the second eccentric shaft 25 is driven to rotate by the third motor 21. The rotation of the second eccentric shaft 25 drives the rotatably connected connecting piece 26 to rotate, and the rotation of the connecting piece 26 drives the connecting rod 27 to move up and down, thereby driving the fixedly connected sieve plate 8 to vibrate. The agglomerated soil sample is vibrated and broken through the sieve plate 8 and falls into the bottom of the collecting chamber 7. Two movable plates are provided on one side of the collecting chamber 7, and the upper and lower parts of the collecting chamber 7 can be opened by the movable plates. A top cover 28 is fixedly connected to the top of the sampling tube 1, and two handles are provided on the top of the top cover 28.

[0037] The sampling mechanism includes a sampling shell 4 fixedly connected to the inside of the sampling tube 1, a first motor 13 is arranged in the sampling shell 4, a sampling assembly is arranged at the output end of the first motor 13, the sampling assembly includes a second gear 14 arranged at the output end of the first motor 13, the second gear 14 is meshedly connected with a third gear 15, the third gear 15 is rotationally connected to the sampling shell 4, the third gear 15 is threadedly connected to a threaded rod 5, and a sampling drill rod 6 is fixedly connected to the bottom of the threaded rod 5.

[0038] In this embodiment, after the earth-breaking drill bit 3 drills into the ground to a specified depth, the first motor 13 is started, and the second gear 14 can be driven to rotate by the first motor 13. The rotation of the second gear 14 drives the meshing third gear 15 to rotate, and the rotation of the third gear 15 can drive the threaded rod 5 connected in threaded connection to rotate and move downward, thereby driving the sampling drill rod 6 fixedly connected to the bottom of the threaded rod 5 to rotate and move downward. After the sampling drill rod 6 moves down and inserts into the soil, the soil sample can remain in the thread of the sampling drill rod 6. Then the first motor 13 is controlled to reverse, which can drive the sampling drill rod 6 to move up and back into the sampling tube 1.

[0039] During the upward movement of the sampling drill rod 6, the scraper plate 9 arranged at the upper part of the collecting chamber 7 can scrape off the soil sample of the sampling drill rod 6 thread, and the scraped soil sample can fall onto the surface of the sieve plate 8. Since the scraper plate 9 is threadedly connected to the sampling drill rod 6, the scraper plate 9 can rotate under the drive of the sampling drill rod 6 when scraping off the soil sample, and then drive the sieve plate 8 arranged at the lower part to rotate. The large particles of impurities in the soil sample can be filtered out by the rotation of the sieve plate 8, and the sieve plate 8 can also drive the first transmission wheel 22 to rotate through the third motor 21 while the sieve plate 8 rotates. The rotation of the wheel 22 drives the second transmission wheel 23 connected through the transmission belt 24 to rotate, and the rotation of the second transmission wheel 23 drives the fixedly connected second eccentric shaft 25 to rotate. The rotation of the second eccentric shaft 25 drives the rotatably connected connecting piece 26 to rotate. The rotation of the connecting piece 26 can drive the rotatably connected connecting rod 27 to move up and down, thereby driving the sieve plate 8 fixedly connected to the bottom to vibrate up and down. The vibration of the sieve plate 8 can break up the agglomerated soil sample, which is convenient for subsequent processing, and the screening effect of the sieve plate 8 can be further improved by vibration.

[0040] Embodiment 2

[0041] like Figures 1 - 8 As shown, based on the first embodiment, the rotating mechanism includes a rotating shell 2 fixedly connected to the bottom of the sampling barrel 1, a fourth motor 29 is arranged inside the rotating shell 2, a rotating assembly is arranged at the output end of the fourth motor 29, and the rotating assembly includes a sixth gear 30 arranged at the output end of the fourth motor 29, the lower part of the sixth gear 30 is meshedly connected with the first gear 12, the first gear 12 is rotationally connected to the rotating shell 2, and a ground-breaking drill bit 3 is fixedly connected to the bottom of the sampling barrel 1.

[0042] The control mechanism includes a control housing 11 fixedly connected to the inside of the earth-breaking drill bit 3, a second motor 16 is arranged inside the control housing 11, a control component is arranged at the output end of the second motor 16, a notch is arranged at the bottom of the control housing 11, and the diameter of the notch is larger than the diameter of the sampling drill rod 6, the control component includes a fourth gear 17 arranged at the output end of the second motor 16, a fifth gear 18 is meshedly connected to the lower part of the fourth gear 17, five first eccentric shafts 20 are rotatably connected to the bottom of the fifth gear 18, and a movable baffle 19 is rotatably connected to the lower part of the five first eccentric shafts 20, and the movable baffle 19 is rotatably connected to the control housing 11.

[0043] In this embodiment, the sampling drill rod 6 is arranged inside the sampling tube 1. When sampling, the fourth motor 29 is first started. The fourth motor 29 can drive the sixth gear 30 to rotate. The rotation of the sixth gear 30 drives the meshing first gear 12 to rotate, and the rotation of the first gear 12 can drive the fixedly connected earth-breaking drill bit 3 to rotate, thereby breaking the soil. When the earth-breaking drill bit 3 moves to the preset sampling depth, the second motor 16 can be started. The fourth gear 17 is driven to rotate by the second motor 16. The rotation of the fourth gear 17 drives the meshing fifth gear 18 to rotate. The rotation of the fifth gear 18 can drive the five first eccentric shafts 20 rotatably connected at the bottom to rotate, and the rotation of the first eccentric shaft 20 can drive the rotatably connected movable baffle 19 to rotate, opening the notch at the bottom of the control housing 11. At this time, the sampling drill rod 6 is driven downward by the sampling mechanism to sample the soil at the preset depth, effectively avoiding the mixing of soil samples from multiple soil layers and affecting the sampling effect of the samples.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soil sampling device for a geotechnical engineering survey drilling rig, comprising a sampling tube (1), characterized in that: A sampling mechanism is fixedly connected inside the sampling tube (1), a sampling drill rod (6) is arranged at the lower part of the sampling mechanism, a collecting chamber (7) is arranged inside the sampling tube (1), a scraper plate (9) is arranged at the upper part of the collecting chamber (7), the scraper plate (9) is rotatably connected to the sampling tube (1), the scraper plate (9) is threadedly connected to the sampling drill rod (6), two vibration shells (10) are symmetrically arranged at the upper part of the scraper plate (9), a third motor (21) is arranged inside the vibration shell (10), a first transmission wheel (22) is arranged at the output end of the third motor (21), and the first transmission wheel (22) drives A transmission belt (24) is connected, and the transmission belt (24) is transmission-connected to a second transmission wheel (23) at a side away from the first transmission wheel (22), and a second eccentric shaft (25) is fixedly connected to the side of the second transmission wheel (23) close to the third motor (21), and the second eccentric shaft (25) is rotationally connected to a connecting member (26), and a connecting rod (27) is rotationally connected to the bottom of the connecting member (26), and a sieve plate (8) is fixedly connected to the bottom of the connecting rod (27), and a rotating mechanism is provided at the bottom of the sampling tube (1), and a ground-breaking drill bit (3) is provided at the lower part of the rotating mechanism, and a control mechanism is provided inside the ground-breaking drill bit (3); After the sampling drill rod (6) drills into the ground to obtain soil samples, the sampling drill rod (6) is driven to move upwards by the sampling mechanism. During the upward movement of the sampling drill rod (6), the scraper plate (9) connected by thread scrapes off the soil sample in the thread of the sampling drill rod (6), and the soil sample falls onto the surface of the sieve plate (8). Then, the third motor (21) is started, and the second eccentric shaft (25) is driven to rotate by the third motor (21). The rotation of the second eccentric shaft (25) drives the rotatably connected connecting member (26) to rotate, and the rotation of the connecting member (26) drives the connecting rod (27) to move up and down, thereby driving the fixedly connected sieve plate (8) to vibrate, and the agglomerated soil sample is broken by the vibration of the sieve plate (8) and falls into the bottom of the collecting chamber (7).

2. A geotechnical engineering survey drill soil sampler according to claim 1, characterized in that: The sampling mechanism comprises a sampling housing (4) fixedly connected to the interior of the sampling cylinder (1), a first motor (13) is arranged in the sampling housing (4), and a sampling assembly is arranged at the output end of the first motor (13).

3. A geotechnical engineering survey drill soil sampler according to claim 2, characterized in that: The sampling assembly comprises a second gear (14) arranged at the output end of the first motor (13); the second gear (14) is meshedly connected with a third gear (15); the third gear (15) is rotationally connected to a sampling housing (4); the third gear (15) is threadedly connected with a threaded rod (5); and the bottom of the threaded rod (5) is fixedly connected with a sampling drill rod (6).

4. The earth-collecting device for geotechnical engineering survey drilling rig according to claim 1, characterized in that: The rotating mechanism comprises a rotating shell (2) fixedly connected to the bottom of the sampling tube (1), a fourth motor (29) is arranged inside the rotating shell (2), and a rotating assembly is arranged at the output end of the fourth motor (29).

5. The earth-collecting device for geotechnical engineering survey drilling rig according to claim 4, characterized in that: The rotating assembly comprises a sixth gear (30) arranged at the output end of the fourth motor (29); the lower part of the sixth gear (30) is meshedly connected with the first gear (12); the first gear (12) is rotationally connected to the rotating housing (2); and the bottom of the sampling tube (1) is fixedly connected with a soil-breaking drill bit (3).

6. The earth-collecting device for geotechnical engineering investigation drilling rig according to claim 1, characterized in that: The control mechanism comprises a control housing (11) fixedly connected to the inside of the earth-breaking drill bit (3), a second motor (16) is arranged inside the control housing (11), and a control component is arranged at the output end of the second motor (16).

7. The earth-collecting device for geotechnical engineering investigation drilling rig according to claim 6, characterized in that: The control assembly comprises a fourth gear (17) arranged at the output end of the second motor (16); the fourth gear (17) is meshedly connected to a fifth gear (18) at its lower portion; the fifth gear (18) is rotatably connected to five first eccentric shafts (20) at its lower portion; the five first eccentric shafts (20) are rotatably connected to a movable baffle (19) at their lower portions; and the movable baffle (19) is rotatably connected to a control housing (11).

8. The earth-collecting device for geotechnical engineering investigation drilling rig according to claim 1, characterized in that: A top cover (28) is fixedly connected to the top of the sampling cylinder (1), and two handles are arranged on the upper part of the top cover (28).

9. The method for using a geotechnical engineering survey drill soil sampler according to claim 1, characterized in that: The following steps are involved: Step 1: Bring the device to the sampling location, place the device vertically on the ground, start the rotating mechanism, drive the earth-breaking drill bit (3) to rotate through the rotating mechanism, and break the soil through the earth-breaking drill bit (3) and insert it into the ground; Step 2: After the earth-breaking drill bit (3) is controlled to move downward to the sampling depth, the control mechanism is started to open the movable baffle (19) at the bottom of the earth-breaking drill bit (3); Step 3: Start the sampling mechanism, and drive the sampling drill rod (6) at the bottom to move downward through the sampling mechanism, so that the sampling drill rod (6) moves downward and extends from the bottom of the earth-breaking drill bit (3) to perform sampling; Step 4: Control the sampling drill rod (6) to move upward into the sampling tube (1). During the upward movement of the sampling drill rod (6), the threaded scraper plate (9) scrapes off the soil sample carried by the sampling drill rod (6). The scraped soil sample falls on the sieve plate (8). Then, the vibration mechanism is started to drive the sieve plate (8) to vibrate up and down to break up the agglomerated soil sample in the sample. Finally, the large particles and impurities in the soil sample are filtered out through the sieve plate (8).

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