Sampling device for engineering geological exploration

Abstract

The invention discloses a sampling device for engineering geological exploration, and relates to the technical field of engineering geological sampling, the sampling device comprises a bearing frame, a mounting frame arranged on the bearing frame, and a sampling unit arranged on the mounting frame, and the sampling unit is used for sampling and collecting geological soil of different depths. A lifting mechanism matched with the sampling unit is arranged on the mounting frame, the lifting mechanism is used for accurately adjusting the depth during sampling operation, and an adjusting mechanism is arranged on the bearing frame and is used for adjusting the position of the mounting frame; by arranging the sampling unit, the soil layer can be rapidly drilled, the drilling efficiency is improved, the geological exploration time is saved, after the preset depth is reached, an operator adjusts the closed state of the soil sampling disc, the sampling drill bit continues to rotate, soil is guided to enter the interior to be stored, and geological soil sampling at different depths is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering geological sampling, in particular to a sampling device for engineering geological exploration. Background Art

[0002] Engineering geological exploration refers to geological surveys and analysis work carried out for the purpose of construction projects. Its main purpose is to evaluate and understand the underground rock structure, geological characteristics and geological structure, so as to determine the geological conditions and potential geological risks of engineering construction. However, geological sampling is one of the tasks. Sampling in geological exploration refers to the collection of underground rock or soil samples for analysis and testing to obtain information about geological characteristics, physical properties and chemical composition. The sampling methods and tools may vary according to the specific exploration purpose and geological conditions.

[0003] The common sampling device for engineering geological exploration at present usually drills a hole at a designated ground location and collects the soil drilled from the hole as a soil sample. Although this sampling device is simple and easy to operate, it is difficult to sample soil at different depths, which makes it difficult to perform subsequent testing of soil samples and affects the sampling accuracy.

[0004] The Chinese patent document announcement number (CN119223671A) "discloses a sampling device for engineering geological exploration, which belongs to the technical field of geological exploration equipment. The sampling device for engineering geological exploration includes a mounting base, and the top center of the mounting base is fixedly connected to a lifting mechanism, and the lifting mechanism is installed on a driving mechanism; a plurality of drill pipes are installed at the bottom of the driving mechanism, and a connecting mechanism is installed at the bottom of one of the drill pipes, and a core pipe is installed at the bottom of the connecting mechanism. The present invention designs a drill pipe, a core pipe and a connecting mechanism. The core pipe is threadedly connected to the connecting mechanism, and is threadedly connected to the drill pipe through the connecting mechanism. Each assembly or disassembly is relatively simple. At the same time, when the staff takes out the core pipe, it can be quickly disassembled into two connected half pipes, and then the geological sample is quickly taken out, which greatly improves the work efficiency. At the same time, it also ensures the continuity and integrity of the sample, which is helpful for subsequent experimental detection." Although the above patent document can ensure the continuity and integrity of the sample, it is difficult to separately sample soil samples at different depths. For this reason, we propose a sampling device for engineering geological exploration. Summary of the invention

[0005] The purpose of the present invention is to provide a sampling device for engineering geological exploration to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a sampling device for engineering geological exploration, comprising:

[0007] The load-bearing frame, the mounting frame arranged on the load-bearing frame, further comprising:

[0008] A sampling unit is arranged on the mounting frame, the sampling unit is used to collect geological soil samples at different depths, the mounting frame is provided with a lifting mechanism matched with the sampling unit, the lifting mechanism is used to accurately adjust the depth during the sampling operation, and;

[0009] The load-bearing frame is provided with an adjusting mechanism, and the adjusting mechanism is used to adjust the position of the mounting frame.

[0010] Preferably, the lifting mechanism includes two loading sleeves slidingly sleeved on a mounting frame, a support plate is fixed on the loading sleeve, a rotating shaft a is rotatably connected to the support plate via a mounting seat, a driving motor is fixed on the support plate via a base, a rotating shaft b is rotatably connected to the support plate via a rotating seat, the rotating shaft b is coaxially fixed with the output shaft of the driving motor, a worm is fixed on the rotating shaft b, a worm wheel meshingly connected to the worm is fixed on the rotating shaft a, at least two toothed plates are fixed on the mounting frame, and a spur gear a meshingly connected to the toothed plate is fixed on the rotating shaft a.

[0011] Preferably, the adjustment mechanism includes a plurality of mounting seats fixed on the load-bearing frame, two of which are rotatably connected to threaded rods, a servo motor a is fixed to the load-bearing frame through a base plate, the output shaft of the servo motor a is coaxially fixed to the threaded rod, the mounting frame is threadedly connected to the threaded rod through a thread groove, and guide rods are fixed to the other two mounting seats, and the mounting frame and the guide rods are slidably penetrated.

[0012] Preferably, a slideway is provided on the load-bearing frame, a sliding sleeve slidably connected to the load-bearing frame is fixed on the mounting frame, a sliding rod is rotatably connected to the sliding sleeve, the sliding rod slides in the slideway, a positioning groove connected to the slideway is provided on the load-bearing frame, and a positioning block slidably connected to the positioning groove is fixed on the sliding rod.

[0013] Preferably, a channel connected to the slideway is provided on the load-bearing frame, a roller is rotatably connected to the slide rod, and the roller is slidably connected to the channel.

[0014] Preferably, the sampling unit includes a load-bearing bracket fixed on the support plate, a servo motor b is fixed on the load-bearing bracket, a spiral rod is coaxially fixed on the output shaft of the servo motor b, a sampling drill bit is fixed on the spiral rod, the sampling drill bit is provided with circumferentially distributed serrated grooves, and an adjustment part is arranged inside the sampling drill bit.

[0015] Preferably, the adjusting member includes a soil sampling plate fixed in the sampling drill bit, a shell is fixed in the sampling drill bit, a positioning ring is fixed on the soil sampling plate, a closing plate is rotatably connected in the positioning ring, a soil sampling groove is provided on the closing plate, a micro motor is fixed in the shell, a spur gear b is fixed on the output shaft of the micro motor, a toothed ring meshing with the spur gear b is fixed on the closing plate, and a limit member matched with the adjusting member is arranged in the shell.

[0016] Preferably, a sampling groove is provided on the sampling drill bit, a cover plate is rotatably connected to the sampling groove via a rotating rod, at least two limiting plates are fixed in the sampling drill bit, and a slot is provided on the cover plate to be engaged with the limiting plates.

[0017] Preferably, the limiting member includes a connecting rod that slides through the shell through an additional plate, an extrusion block is fixed to one end of the connecting rod, a limiting groove that is engaged with the extrusion block is opened on the closing disk, a spring is sleeved on the connecting rod, one end of the spring is fixed to the extrusion block, and the other end of the spring is fixed to the additional plate, an electric push rod is fixed in the shell, and a connecting plate is fixed to the end of the electric push rod adjacent to the connecting rod.

[0018] Preferably, a handle is fixed on the load-bearing frame, a plurality of universal wheels are fixed on the load-bearing frame, a protective frame is fixed on the load-bearing frame, and the servo motor b is located inside the protective frame.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The present invention achieves the goal of quickly drilling deep into the soil layer by setting up a sampling unit, which can not only significantly improve the efficiency of the drilling operation, but also greatly save the time required for drilling in geological exploration. When the soil in the exploration borehole is acted upon by the spiral rod, the soil will be transported to the outside of the borehole. When the predetermined depth is reached and sampling is required, the operator can adjust the closed state of the soil sampling plate through the adjustment part, and then the sampling drill bit will continue to rotate, so that the soil will be guided into the sampling drill bit for storage, so that geological soil at different depths can be successfully sampled.

[0021] (2) The present invention can flexibly respond to sampling requirements at various depths through the lifting mechanism, and can meet specific operating conditions by adjusting the drilling depth. The mechanism relies on the self-locking function of the worm gear to effectively prevent the support plate from shifting during operation. It not only has the advantage of high adjustment accuracy, but also performs very well in terms of stability, thereby ensuring the accuracy and reliability of the entire sampling process.

[0022] (3) The present invention can easily adjust the front and rear positions of the sampling unit by setting an adjustment mechanism, so that accurate drilling and sampling operations can be performed at different front and rear positions without moving the entire device. This adjustment mechanism significantly improves the flexibility of the device, enabling it to adapt to a variety of different working environments and conditions. Therefore, the device is very suitable for occasions where drilling and sampling work needs to be performed at multiple different positions, and can meet the actual needs of sampling work at various adjacent positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a side view structural schematic diagram of the present invention;

[0025] Figure 3 It is a bottom view structural schematic diagram of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the lifting mechanism of the present invention;

[0027] Figure 5 It is a schematic diagram of the explosion structure of the loading sleeve of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the sampling drill bit of the present invention;

[0029] Figure 7 This is a schematic diagram of the explosion structure at the sampling drill bit of the present invention;

[0030] Figure 8 It is a schematic diagram of the side section structure of the housing of the present invention;

[0031] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure of the middle A area;

[0032] Fig.10 It is a schematic diagram of the structure of the closing disk of the present invention in different states.

[0033] In the figure: 1, load-bearing frame; 2, mounting frame; 3, sampling unit; 4, lifting mechanism; 5, adjustment mechanism; 6, loading sleeve; 7, support plate; 8, mounting seat; 9, rotating shaft a; 10, driving motor; 11, rotating seat; 12, rotating shaft b; 13, worm; 14, worm wheel; 15, toothed plate; 16, spur gear a; 17, mounting seat; 18, threaded rod; 19, servo motor a; 20, threaded groove; 21, guide rod; 22, slideway; 23, sliding sleeve; 24, sliding rod; 25, positioning groove; 26, positioning block; 27, channel; 28, roller; 29, load-bearing bracket ; 30. servo motor b; 31. screw rod; 32. sampling drill bit; 33. serrated groove; 34. adjusting part; 35. soil plate; 36. housing; 37. positioning ring; 38. closing plate; 39. soil trough; 40. micro motor; 41. spur gear b; 42. toothed ring; 43. sampling trough; 44. cover plate; 45. limiting plate; 46. slot; 47. additional plate; 48. connecting rod; 49. extrusion block; 50. limiting groove; 51. spring; 52. electric push rod; 53. connecting plate; 54. handle; 55. universal wheel; 56. protective frame; 57. limiting part. DETAILED DESCRIPTION

[0034] 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.

[0035] Example 1

[0036] See also Figure 1 - Fig.10 , a sampling device for engineering geological exploration shown in the figure includes a load-bearing frame 1, a mounting frame 2 arranged on the load-bearing frame 1, a handle 54 is fixed on the load-bearing frame 1, and the addition of the handle 54 facilitates the user to push the device to move, a plurality of universal wheels 55 are fixed on the load-bearing frame 1, and the setting of the universal wheels 55 makes it easier for the user to push the device to move, and also includes a sampling unit 3 arranged on the mounting frame 2, and the sampling unit 3 is used to sample and collect geological soil at different depths, and a lifting mechanism 4 matched with the sampling unit 3 is arranged on the mounting frame 2, and the lifting mechanism 4 is used to accurately adjust the depth during the sampling operation, and an adjusting mechanism 5 is arranged on the load-bearing frame 1, and the adjusting mechanism 5 is used to adjust the position of the mounting frame 2;

[0037] In this solution, the height of the sampling unit 3 can be adjusted according to different depth requirements through the lifting mechanism 4, and the lifting mechanism 4 meets the sampling work requirements at different depths, thereby improving the geological soil sampling effect, and the adjustment mechanism 5 can adjust the front and rear spacing of the sampling unit 3 within the specified range, thereby greatly improving the flexibility of geological exploration sampling, and the sampling unit 3 can sample and collect soil at different depths, thereby ensuring that soil samples at different depths can be collected, ensuring the accuracy of soil sampling, and improving the sampling efficiency.

[0038] Further Figure 6-10 As shown, it is worth specifically explaining that the sampling unit 3 includes a load-bearing bracket 29 fixed on the support plate 7, a servo motor b30 fixed on the load-bearing bracket 29, a protective frame 56 fixed on the load-bearing bracket 29, and the servo motor b30 is located inside the protective frame 56. The setting of the protective frame 56 protects the servo motor b30, ensures the service life of the servo motor b30, and prevents damage caused by collision. A spiral rod 31 is coaxially fixed on the output shaft of the servo motor b30, and a sampling drill bit 32 is fixed on the spiral rod 31. The sampling drill bit 32 is provided with a There are circumferentially distributed sawtooth grooves 33, and a sampling groove 43 is provided on the sampling drill bit 32. A cover plate 44 is rotatably connected in the sampling groove 43 through a rotating rod. When it is necessary to collect soil samples in the sampling drill bit 32, the soil samples in the sampling drill bit 32 can be collected by opening the cover plate 44. At least two limiting plates 45 are fixed in the sampling drill bit 32, and a card slot 46 is provided on the cover plate 44 to be engaged with the limiting plate 45. By adding the limiting plate 45 and the card slot 46, it is ensured that the cover plate 44 maintains relative stability in the engaged state to avoid the cover plate 44 from loosening;

[0039] Among them, an adjusting member 34 is arranged in the sampling drill bit 32, and the adjusting member 34 includes a soil sampling disc 35 fixed in the sampling drill bit 32, a housing 36 is fixed in the sampling drill bit 32, a positioning ring 37 is fixed on the soil sampling disc 35, a closing disc 38 is rotatably connected in the positioning ring 37, and a soil sampling groove 39 is provided on the closing disc 38, a micro motor 40 is fixed in the housing 36, a spur gear b41 is fixed on the output shaft of the micro motor 40, a toothed ring 42 meshingly connected with the spur gear b41 is fixed on the closing disc 38, and a limiter 57 adapted to the adjusting member 34 is arranged in the housing 36;

[0040] It should be noted that, in the process of geological exploration sampling, by using the sampling unit 3, the goal of quickly drilling deep into the soil layer can be achieved. This method can not only significantly improve the efficiency of the drilling operation, but also greatly save the time required for drilling in geological exploration. When the soil in the exploration borehole is subjected to the force of the spiral rod 31, the soil will be transported to the outside of the borehole. Once the predetermined depth is reached and sampling is required, the operator can adjust the closed state of the soil sampling plate 35 through the adjustment member 34, and then the sampling drill bit 32 will continue to rotate, so that the soil will be guided into the sampling drill bit 32 for storage. In this way, geological soil at different depths can be successfully sampled, thereby providing valuable samples for geological analysis and research;

[0041] It should also be noted that a blade is provided on the bottom surface of the soil plate 35, which can ensure that the soil plate 35 rotates at a high speed following the sampling drill bit 32, and ensure that the soil groove 39 is consistent with the groove on the soil plate 35, so that the soil can smoothly enter the sampling drill bit 32 for storage;

[0042] The working principle of the sampling unit 3 for sampling soil at different depths is as follows: the spiral rod 31 is driven by the servo motor b30 to rotate synchronously, driving the sampling drill bit 32 to rotate synchronously, and the ground soil is broken by the opening of the sawtooth groove 33. When the sampling drill bit 32 penetrates to the specified depth position, the spur gear b41 is driven by the micro motor 40 to rotate synchronously, and the meshing transmission effect between the spur gear b41 and the toothed ring 42 is utilized to make the closing disk 38 rotate along the positioning ring 37 after being subjected to force, until the soil sampling groove 39 on the closing disk 38 is in a coincidence with the soil sampling disk 35. The soil sampling disk 35 follows the sampling drill bit 32 to rotate synchronously at high speed, causing the soil to enter the sampling drill bit 32, and then the soil sampling work is completed.

[0043] For further information, see Fig. 9 - Fig.10 The limiting member 57 shown in the figure includes a connecting rod 48 that is slidably penetrated through the housing 36 through the additional plate 47, an extrusion block 49 is fixed to one end of the connecting rod 48, a limiting groove 50 that is engaged with the extrusion block 49 is provided on the closing plate 38, a spring 51 is sleeved on the connecting rod 48, one end of the spring 51 is fixed to the extrusion block 49, and the other end of the spring 51 is fixed to the additional plate 47, an electric push rod 52 is fixed in the housing 36, and a connecting plate 53 is fixed to one end of the electric push rod 52 adjacent to the connecting rod 48;

[0044] It should be noted that, by setting the arc surface of the extrusion block 49, it is ensured that when the closing plate rotates, the elastic action of the spring 51 can make the closing plate automatically engage and limit its position after rotating forty-five degrees. When the limiting state of the closing plate needs to be released, the electric push rod 52 is driven, and the connecting plate 53 is used as a transmission to pull up the connecting rod 48 and the extrusion block 49, thereby realizing the limiting state of the closing plate, thereby achieving precise limiting of the closing plate to ensure the normal use of the closing plate.

[0045] This plan provides the following geological soil sampling process:

[0046] First, the staff pushes the device to the designated sampling position, and after locking the universal wheel 55, when the sampling position of the front and rear positions needs to be adjusted, the servo motor a19 is driven to make the threaded rod 18 rotate synchronously, and the threaded transmission between the threaded rod 18 and the mounting frame 2 is used to make the mounting frame 2 perform translational movement after being subjected to force, until the sampling unit 3 is adjusted to a suitable position;

[0047] Secondly, the support plate 7 is moved downward by the lifting unit until the sampling drill bit 32 contacts the ground, and the servo motor b30 is driven to make the spiral rod 31 and the sampling drill bit 32 rotate synchronously, and the driving motor 10 and the servo motor b30 are driven synchronously to work;

[0048] Then, when the required sampling depth is reached, the servo motor b30 and the drive motor 10 stop driving, and the micro motor 40 drives the closing plate to rotate until the closing plate rotates forty-five degrees, so that the soil sampling groove 39 and the soil sampling plate 35 are in a matching state, and then the servo motor b30 drives the sampling drill bit 32 and the soil sampling plate 35 to rotate synchronously at a high speed, and then the soil enters the sampling drill bit 32;

[0049] Finally, after the soil sampling is completed, the sampling unit 3 is raised to the ground by the lifting unit, and the cover plate 44 is opened so that the cover plate 44 is turned along the axis of the rotating rod after being subjected to force, so that the soil collected in the sampling drill bit 32 can be sampled and taken.

[0050] Embodiment 2: Based on Embodiment 1, according to Figure 1 - Figure 4As shown, it is worth specifically explaining that the lifting mechanism 4 includes two loading sleeves 6 slidably sleeved on the mounting frame 2, a support plate 7 is fixed on the loading sleeve 6, a rotating shaft a9 is rotatably connected to the support plate 7 through a mounting seat 8, a driving motor 10 is fixed on the support plate 7 through a base, a rotating shaft b12 is rotatably connected to the support plate 7 through a rotating seat 11, the rotating shaft b12 is coaxially fixed with the output shaft of the driving motor 10, a worm 13 is fixed on the rotating shaft b12, a worm wheel 14 meshingly connected to the worm 13 is fixed on the rotating shaft a9, at least two toothed plates 15 are fixed on the mounting frame 2, and a spur gear a16 meshingly connected to the toothed plate 15 is fixed on the rotating shaft a9;

[0051] It should be noted that the lifting mechanism 4 can flexibly respond to sampling requirements at various depths, and can meet specific operating conditions by adjusting the drilling depth. The mechanism relies on the self-locking function of the worm gear 14 and the worm 13 to effectively prevent the support plate 7 from being displaced during the operation process. It not only has the advantage of high adjustment accuracy, but also performs very well in terms of stability, ensuring the accuracy and reliability of the entire sampling process.

[0052] The working principle of the lifting mechanism 4 for adjusting the drilling depth is as follows: through the drive of the driving motor 10, the rotating shaft b12 is rotated synchronously, driving the worm 13 to rotate synchronously, and utilizing the meshing transmission effect between the worm 13 and the worm wheel 14, the rotating shaft a9 is rotated synchronously, and then the two spur gears a16 are driven to rotate synchronously, and utilizing the meshing transmission effect between the spur gear a16 and the toothed plate 15, the support plate 7 is subjected to force and then the loading sleeve 6 performs a linear lifting motion on the mounting frame 2, thereby achieving the purpose of adjusting different drilling depths.

[0053] For further information, see Figure 1 - Figure 2 The adjustment mechanism 5 shown in the figure includes a plurality of mounting seats 17 fixed on the load-bearing frame 1, wherein two mounting seats 17 are rotatably connected with threaded rods 18, a servo motor a19 is fixed on the load-bearing frame 1 through a base plate, an output shaft of the servo motor a19 is coaxially fixed with the threaded rod 18, a mounting frame 2 is threadedly connected with the threaded rod 18 through a thread groove 20, and guide rods 21 are fixed on the other two mounting seats 17, and the mounting frame 2 and the guide rod 21 are slidably arranged to penetrate;

[0054] It should be noted that, through the setting of the adjustment mechanism 5, the user can easily adjust the front and rear positions of the sampling unit 3. This innovative design enables accurate drilling and sampling operations to be performed at different front and rear positions without moving the entire device. This adjustment mechanism significantly improves the flexibility of the device, enabling it to adapt to a variety of different working environments and conditions. Therefore, the device is very suitable for occasions where drilling and sampling work needs to be performed at multiple different positions. It has a very wide range of applications and can meet the actual needs of sampling work at various adjacent positions, thereby providing users with great convenience and efficient workflow.

[0055] It should also be noted that the length of the guide rod 21 is consistent with that of the threaded rod 18, thereby ensuring the stability and smoothness of the installation frame 2 during translation, and also preventing the installation frame 2 from getting stuck due to excessive movement. In addition, the spiral rod 31 and the guide rod 21 are located on the same horizontal plane, further improving the stability of the installation frame 2 during movement.

[0056] Embodiment 3

[0057] See also Figure 1 and Figure 5 This embodiment further illustrates other embodiments, and the difference lies in that the connection components between the mounting frame 2 and the load-bearing frame 1 are optimized.

[0058] Specifically, a slideway 22 is provided on the load-bearing frame 1, a sliding sleeve 23 slidably connected to the load-bearing frame 1 is fixed on the mounting frame 2, a sliding rod 24 is rotatably connected to the sliding sleeve 23, the sliding rod 24 slides in the slideway 22, and the sliding rod 24 slides in the slideway 22, providing a basic guide for the mounting frame 2, a positioning groove 25 connected to the slideway 22 is provided on the load-bearing frame 1, a positioning block 26 slidably connected to the positioning groove 25 is fixed on the sliding rod 24, and the additional positioning block 26 and the positioning groove 25 can ensure that the sliding sleeve 23 always maintains a stable translation state during translation, and prevents the sliding sleeve 23 from being unstable during translation;

[0059] It should be noted that a channel 27 connected to the slide 22 is provided on the load-bearing frame 1, and a roller 28 is rotatably connected to the slide bar 24. The roller 28 is slidably connected to the channel 27. By adding the roller 28 and the channel 27, the smoothness of the translational movement of the mounting frame 2 is further enhanced, thereby reducing the compressive pressure on the slide bar 24.

[0060] The servo motor a19, servo motor b30, drive motor 10, micro motor 40 and electric push rod 52 can all be purchased from the market and equipped with separate power supplies. They are mature technologies in this field and have been fully disclosed, so they will not be repeated in the specification.

[0061] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0062] 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 sampling device for engineering geological exploration, comprising: A load-bearing frame (1), and a mounting frame (2) disposed on the load-bearing frame (1); It is characterized by further comprising: A sampling unit (3) is arranged on the mounting frame (2), the sampling unit (3) is used to collect geological soil samples at different depths, the mounting frame (2) is provided with a lifting mechanism (4) matched with the sampling unit (3), the lifting mechanism (4) is used to accurately adjust the depth during the sampling operation, and; An adjustment mechanism (5) is provided on the load-bearing frame (1), and the adjustment mechanism (5) is used to adjust the position of the mounting frame (2).

2. A sampling device for engineering geological exploration according to claim 1, characterized in that: The lifting mechanism (4) comprises a mounting frame (2) on which two loading sleeves (6) are slidably sleeved, a support plate (7) is fixed on the loading sleeve (6), a rotating shaft a (9) is rotatably connected to the support plate (7) via a mounting seat (8), a driving motor (10) is fixed on the support plate (7) via a base, a rotating shaft b (12) is rotatably connected to the support plate (7) via a rotating seat (11), the rotating shaft b (12) is coaxially fixed with the output shaft of the driving motor (10), a worm (13) is fixed on the rotating shaft b (12), a worm wheel (14) meshingly connected to the worm (13) is fixed on the rotating shaft a (9), at least two toothed plates (15) are fixed on the mounting frame (2), and a spur gear a (16) meshingly connected to the toothed plate (15) is fixed on the rotating shaft a (9).

3. The sampling device for engineering geological exploration according to claim 1, characterized in that: The adjustment mechanism (5) comprises a plurality of mounting seats (17) fixed on a load-bearing frame (1), wherein two of the mounting seats (17) are rotatably connected to threaded rods (18), a servo motor a (19) is fixed to the load-bearing frame (1) via a base plate, an output shaft of the servo motor a (19) is coaxially fixed to the threaded rod (18), the mounting frame (2) is threadedly connected to the threaded rod (18) via a thread groove (20), and guide rods (21) are fixed to the other two mounting seats (17), and the mounting frame (2) and the guide rod (21) are slidably interwoven.

4. The sampling device for engineering geological exploration according to claim 1, characterized in that: The load-bearing frame (1) is provided with a slideway (22); the mounting frame (2) is fixed with a sliding sleeve (23) which is slidably connected to the load-bearing frame (1); the sliding sleeve (23) is rotatably connected with a sliding rod (24); the sliding rod (24) slides in the slideway (22); the load-bearing frame (1) is provided with a positioning groove (25) which is connected to the slideway (22); the sliding rod (24) is fixed with a positioning block (26) which is slidably connected to the positioning groove (25).

5. A sampling device for engineering geological exploration according to claim 4, characterized in that: The load-bearing frame (1) is provided with a channel (27) connected to the slideway (22); the slide bar (24) is rotatably connected to a roller (28); and the roller (28) is slidably connected to the channel (27).

6. A sampling device for engineering geological exploration according to claim 2, characterized in that: The sampling unit (3) comprises a load-bearing bracket (29) fixed on the support plate (7), a servo motor b (30) fixed on the load-bearing bracket (29), a spiral rod (31) coaxially fixed on the output shaft of the servo motor b (30), a sampling drill bit (32) fixed on the spiral rod (31), the sampling drill bit (32) being provided with circumferentially distributed sawtooth grooves (33), and an adjusting member (34) being arranged inside the sampling drill bit (32).

7. A sampling device for engineering geological exploration according to claim 6, characterized in that: The adjusting member (34) comprises a soil collecting plate (35) fixed in the sampling drill bit (32), a housing (36) fixed in the sampling drill bit (32), a positioning ring (37) fixed on the soil collecting plate (35), a closing plate (38) rotatably connected in the positioning ring (37), a soil collecting groove (39) provided on the closing plate (38), a micro motor (40) fixed in the housing (36), a spur gear b (41) fixed on the output shaft of the micro motor (40), a toothed ring (42) meshingly connected with the spur gear b (41) fixed on the closing plate (38), and a limiter (57) matched with the adjusting member (34) is provided in the housing (36).

8. The sampling device for engineering geological exploration according to claim 6, characterized in that: The sampling drill bit (32) is provided with a sampling groove (43), a cover plate (44) is rotatably connected to the sampling groove (43) via a rotating rod, at least two limiting plates (45) are fixed in the sampling drill bit (32), and a clamping groove (46) is provided on the cover plate (44) for clamping connection with the limiting plates (45).

9. The sampling device for engineering geological exploration according to claim 7, characterized in that: The limiting member (57) includes a connecting rod (48) slidingly penetrated through the housing (36) through an additional plate (47), one end of the connecting rod (48) is fixed with an extrusion block (49), the closing disk (38) is provided with a limiting groove (50) engaged with the extrusion block (49), a spring (51) is sleeved on the connecting rod (48), one end of the spring (51) is fixed to the extrusion block (49), and the other end of the spring (51) is fixed to the additional plate (47), an electric push rod (52) is fixed in the housing (36), and a connecting plate (53) is fixed to the end of the electric push rod (52) adjacent to the connecting rod (48).

10. The sampling device for engineering geological exploration according to claim 6, characterized in that: A handle (54) is fixed on the load-bearing frame (1), a plurality of universal wheels (55) are fixed on the load-bearing frame (1), a protective frame (56) is fixed on the load-bearing bracket (29), and the servo motor b (30) is located inside the protective frame (56).

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