A sampling and excavation device for geological exploration

Abstract

The present invention discloses a sampling and excavation device for geological exploration, comprising an excavation support, a driving machine arranged on the excavation support and a sampling tube arranged at the bottom of the driving machine, wherein the bottom of the sampling tube is connected with a sampling auxiliary device, and the driving machine can drive the sampling tube and the sampling auxiliary device to rotate for sampling. The sampling and excavation device for geological exploration, wherein the sampling auxiliary device can realize soil sampling of the underground layer, and can also detect whether there are cavities underground while working, so that two layers of soil can be separated to avoid soil sliding, so that when the sampling is completed, the staff can detect the depth of the cavity according to the marking position and the rotation speed of the drill rod, so that when collating the data, the structure of the sample soil can be more accurately analyzed according to the depth of the cavity and the soil depth, thereby analyzing the structure of the underground soil.

Description

Technical Field

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

[0002] Geological exploration can be broadly understood as geological work, which is the investigation and research work of geological conditions such as rocks, stratigraphic structures, minerals, groundwater, and landforms in a certain area using geological exploration methods such as surveying and mapping, geophysical exploration, geochemical prospecting, drilling, pit exploration, sampling and testing, and geological remote sensing based on the needs of economic construction, national defense construction, and scientific and technological development.

[0003] When geological survey is used, sampling and excavation equipment is needed to sample the soil. When the equipment is used, it mainly uses a drilling pipe with an excavation function to drill at the location where drilling is required. When encountering rocks, the front side of the sampling tube will drill a hole along the position of the rock, allowing the sampling tube to continue to move downward. After the drilling is completed, the drilling tube is taken out from the soil. According to the length and position of the soil, the coating structure of the pattern at different depths of the sample position can be judged;

[0004] However, when encountering underground holes during sampling, the current drilling and excavation equipment continues to rotate downward. During the rotation, the soil inside moves downward, and when passing through the hole, it will be squeezed upward again according to the squeezing force of the soil, resulting in a difference between the length and depth of the sample taken and the depth of the soil, thus affecting the detection data. To this end, we propose a sampling and excavation device for geological exploration. Summary of the invention

[0005] The object of the present invention is to provide a sampling and excavation device for geological exploration to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: a sampling and excavation device for geological exploration, comprising an excavation support, a driving machine arranged on the excavation support, and a sampling tube arranged at the bottom of the driving machine, wherein a sampling auxiliary device is connected to the bottom of the sampling tube, and the driving machine can drive the sampling tube and the sampling auxiliary device to rotate for sampling;

[0007] The sampling auxiliary device comprises a sampling drill bit connected to the bottom of the sampling tube, and the bottom of the sampling drill bit is connected to a pressure detector 1, a fixing groove is arranged in the sampling drill bit, and a covering component is connected inside the fixing groove, and the covering component can control the opening and closing of the bottom of the sampling drill bit;

[0008] The sampling drill bit is provided with a placement groove on the outside, a covering piece is provided inside the placement groove, a connecting device is provided on the covering assembly, and the covering assembly can drive the connecting device to take the covering piece out of the placement groove.

[0009] Preferably, the covering assembly comprises a rotating gear ring rotatably connected to the interior of the fixing groove, and a plurality of driving gears are meshedly connected to the interior of the rotating gear ring, and a fixing rod is connected to the center of the driving gear, and both ends of the fixing rod are rotatably connected to the interior of the fixing groove;

[0010] A driving device is connected to the outside of any one of the driving gears, and the driving device can drive the fixing rod to rotate, and the driving device can cover the outside of the fixing groove;

[0011] The outer side of the fixed rod is sleeved with a rotating piece, and a plurality of the rotating pieces are arranged in sequence;

[0012] The rotating piece at the bottom is connected to the connecting device.

[0013] Preferably, the driving device includes a connecting gear meshingly connected to the outer side of the driving gear, a double-headed motor is connected to the center of the connecting gear, and a covering member that can cover the outer side of the fixing groove is connected to the top of the double-headed motor.

[0014] Preferably, the cover comprises a screw connected to the top of the double-headed motor, a positioning groove rotatably connected to the top of the screw is provided on the top of the sampling drill bit, a moving block is sleeved on the outer side of the screw, and the outer side of the moving block is slidably connected to the inner wall of the positioning groove:

[0015] One side of the moving block passes through a positioning groove and is connected with a moving ring, and the moving ring is slidably connected to the inside of the sampling drill bit.

[0016] Preferably, the connecting device comprises a rotating rod arranged on the bottom rotating plate, one end of the rotating rod close to the inner wall of the sampling drill bit is connected to a micro motor 1, and the micro motor 1 is arranged on the rotating plate through a motor frame;

[0017] The other end of the rotating rod is connected to a vertical cylinder, the bottom of the vertical cylinder is connected to a sampling structure, and the sampling structure can take the covering sheet out from the inside of the placement groove.

[0018] Preferably, the sampling structure comprises a support frame arranged at the bottom of the vertical cylinder, and a support plate is arranged inside the support frame, one side of the support plate is connected to a second micro motor, and an output end of the second micro motor is rotatably connected to the support frame, and the second micro motor is arranged outside the support frame through a motor frame;

[0019] The support plate is provided with a groove, and a second micro cylinder is provided at the bottom of the groove, and a clamping plate is connected to the output end of the second micro cylinder;

[0020] The bottom of the sampling drill bit is provided with a connecting groove connected with the placement groove, and the clamping plate can drive the covering sheet to be taken out from the bottom of the connecting groove.

[0021] Preferably, the sampling structure comprises a support frame arranged at the bottom of the vertical cylinder, and a support plate is arranged inside the support frame, one side of the support plate is connected to a second micro motor, and an output end of the second micro motor is rotatably connected to the support frame, and the second micro motor is arranged outside the support frame through a motor frame;

[0022] The support plate is provided with a groove, and a second micro cylinder is provided at the bottom of the groove, the output end of the second micro cylinder is connected with a clamping plate, and a second micro pressure detector is provided inside the groove;

[0023] The bottom of the sampling drill bit is provided with a connecting groove connected with the placement groove, and the clamping plate can drive the covering sheet to be taken out from the bottom of the connecting groove;

[0024] The support plate is provided with a push rod, and the push rod can drive the cover sheet to move;

[0025] A support member is arranged inside the placement groove, and the support member is used to position the covering sheet, and the push rod can drive the support member to move.

[0026] Preferably, the support member includes a vertical groove arranged inside the placement groove, and a compression spring is arranged inside the vertical groove, and one side of the compression spring is connected to the movable plate.

[0027] Preferably, the covering sheet is made of elastic material.

[0028] Preferably, the communicating groove is arranged in a cross shape.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The sampling auxiliary device provided in the equipment of the present invention can realize the sampling of the soil in the underground layer, and can also detect whether there are holes in the underground while working, so as to separate the two layers of soil and prevent the soil from sliding. When the sampling is completed, the staff can detect the depth of the hole according to the marked position and the rotation speed of the drill rod, so that when collating the data, the structure of the sample soil can be more accurately analyzed according to the depth of the hole and the soil depth, thereby analyzing the structure of the underground soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the top view of the structure of the sampling drill bit of the present invention;

[0033] Figure 3 The main cross-sectional view of the sampling drill bit of the present invention is shown in FIG. Figure 1 ;

[0034] Figure 4It is a top view and cross-sectional schematic diagram of the sampling drill bit of the present invention;

[0035] Figure 5 This is a bottom view of the structure of the structural covering assembly of the present invention;

[0036] Figure 6 This is a schematic diagram of the bottom view of the sampling drill bit structure of the present invention;

[0037] Figure 7 This is a schematic diagram of the main structure of the structural connection device of the present invention;

[0038] Figure 8 It is a schematic diagram of the main view of the sampling structure of the structure of the present invention;

[0039] Fig. 9 The main cross-sectional view of the sampling drill bit of the present invention is shown in FIG. Figure 2 ;

[0040] Fig.10 The main cross-sectional view of the sampling drill bit of the present invention is shown in FIG. Figure 3 .

[0041] In the figure: 1- bracket; 10- driving machine; 11- sampling tube; 2- sampling auxiliary device; 20- sampling drill; 21- pressure detector 1; 22- fixing groove; 3- covering assembly; 23- placing groove; 24- covering sheet; 4- connecting device; 30- rotating gear ring; 31- driving gear; 32- fixing rod; 33- driving device; 34- rotating sheet; 330- connecting gear; 331- double-headed motor; 332- covering member; 333- screw rod; 334- Positioning groove; 335-moving block; 336-moving ring; 40-rotating rod; 41-micro motor one; 42-vertical cylinder; 43-sampling structure; 430-support frame; 431-support plate; 432-micro motor two; 433-groove; 434-micro cylinder two; 435-clamp; 436-connecting groove; 437-pressure detector two; 438-top rod; 44-support member; 440-vertical groove; 441-compression spring; 442-moving plate. DETAILED DESCRIPTION

[0042] 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.

[0043] See also Figure 1-10The present invention provides a technical solution: a sampling and excavation device for geological exploration, comprising an excavation support 1, a driving machine 10 fixed on the excavation support 1, and a sampling tube 11 arranged at the bottom of the driving machine 10, a sampling auxiliary device 2 is connected to the bottom of the sampling tube 11, and the driving machine 10 can drive the sampling tube 11 and the sampling auxiliary device 2 to rotate for sampling;

[0044] The sampling auxiliary device 2 includes a sampling drill bit 20 connected to the bottom of the sampling tube 11. The sampling drill bit 20 is movably connected to the bottom of the sampling tube 11 through a thread, which is convenient for disassembly and installation. A pressure detector 21 is fixed to the bottom of the sampling drill bit 20. A fixing groove 22 is provided in the sampling drill bit 20, and a cover component 3 is connected inside the fixing groove 22. The cover component 3 can control the opening and closing of the bottom of the sampling drill bit 20.

[0045] A placement groove 23 is arranged outside the sampling drill bit 20, and the top of the placement groove 23 is connected to the outside. The staff can place the sample drill bit inside the placement groove 23 through the cover sheet 24. The cover sheet 24 is arranged inside the placement groove 23. The cover assembly 3 is provided with a connecting device 4, and the cover assembly 3 can drive the connecting device 4 to take the cover sheet 24 out of the placement groove 23.

[0046] When in use, the cover sheet 24 is configured to be made of an elastic material, so that the cover sheet 24 can be easily unfolded and used;

[0047] When in use, the bracket 1 is installed at the position where sampling is required, and then the sampling drill bit 20 is connected to the sampling tube 11, and then the sampling tube 11 is connected to the bottom of the driving machine 10, so that when the driving machine 10 is working, it can drive the sampling tube 11 and the sampling drill bit 20 to enter the soil layer for sampling, and the bottom of the sampling drill bit 20 is set to be special-shaped to avoid contact with stones and slipping during sampling;

[0048] Furthermore, when in use, the sampling tube 11 can be stacked according to the sampling depth;

[0049] When sampling, when the pressure detector at the bottom of the sampling drill bit 20 cannot detect the pressure, the cover assembly 3 is opened to cover the bottom of the sampling drill bit 20 to prevent the bottom from entering without soil. During the descent, the soil moves downward inside the sampling tube 11, and the cover assembly 3 can drive the connecting device 4 to move while moving. The connecting device 4 can take out the cover sheet 24 inside the placement groove 23 to make it located at the bottom of the cover assembly 3;

[0050] When the pressure detector 21 detects the pressure value again, it means that a soil layer is encountered, and the cover assembly 3 opens and returns to the initial position, and the connecting device 4 does not fix the cover sheet 24, so that the soil layer rises again, and the lower soil layer and the upper soil layer are separated by the cover sheet 24. In this way, when the sampling is completed, the staff can take out the sample inside the sampling tube 11, and the structure of the bottom of the soil layer can be judged according to the length of the sample, and the height of the hole at the bottom of the soil layer can be judged according to the position of the cover sheet 24 and the descending speed of the sampling tube 11. In this way, the soil layer structure can be analyzed according to the soil length inside the sampling tube 11 and the height of the hole, reducing the error caused by the hole;

[0051] Moreover, the covering sheet 24 can also cover two layers of soil when in use. In this way, when a relatively small hole is needed for sampling, and the diameter of the bottom soil layer at the sampling depth is smaller than the diameter of the sampling tube 11 and the drill bit, the covering sheet 24 can be used to cover it to prevent the soil below from being squeezed into the soil hole and affecting the analysis of the staff.

[0052] The cover assembly 3 includes a rotating gear ring 30 rotatably connected to the interior of the fixed groove 22, the rotating gear is rotatably connected to the interior of the fixed groove 22 through a bearing, and a plurality of driving gears 31 are meshed and connected inside the rotating gear ring 30, and a fixing rod 32 is fixedly connected at the center of the driving gear 31, and both ends of the fixing rod 32 are rotatably connected to the interior of the fixed groove 22 through bearings;

[0053] A driving device 33 is connected to the outside of any driving gear 31, and the driving device 33 can drive the fixing rod 32 to rotate, and the driving device 33 can cover the outside of the fixing groove 22;

[0054] A rotating piece 34 is sleeved on the outer side of the fixed rod 32, and a plurality of rotating pieces 34 are stacked in height in sequence;

[0055] The bottom rotating piece 34 is connected to the connecting device 4 .

[0056] The driving device 33 includes a connecting gear 330 meshingly connected to the outer side of the driving gear 31. The outer side of the connecting gear 330 is arranged in a fan shape. A double-headed motor 331 is fixedly connected to the center of the connecting gear 330. A covering member 332 is connected to the top of the double-headed motor 331 to cover the outer side of the fixing groove 22.

[0057] The cover 332 includes a screw rod 333 fixedly connected to the top of the double-headed motor 331, and a positioning groove 334 rotatably connected to the top of the screw rod 333 is provided on the top of the sampling drill bit 20. The top of the screw rod 333 is rotatably connected to the inside of the positioning groove 334 through a bearing. A moving block 335 is sleeved on the outside of the screw rod 333, and the outside of the moving block 335 is slidably connected to the inner wall of the positioning groove 334:

[0058] A moving ring 336 is fixedly connected to one side of the moving block 335 through the positioning groove 334, and the moving ring 336 is slidably connected to the inside of the sampling drill bit 20;

[0059] When the pressure detector cannot detect the pressure value, the double-headed motor 331 is turned on, and the double-headed motor 331 drives the screw rod 333 to rotate, and the screw rod 333 drives the moving block 335 to move inside the positioning groove 334, so that the moving ring 336 moves along the inside of the moving groove until the fixed groove 22 leaks out, and at the same time, the double-headed motor 331 drives the connecting gear 330 to rotate, and the connecting gear 330 drives the driving gear 31 to rotate, and the driving gear 31 drives the rotating gear ring 30 to rotate, and the rotating gear ring 30 drives other driving gears 31 to rotate at the same time, so that multiple fixed rods 32 rotate at the same time, and the fixed rod 32 drives the rotating piece 34 to rotate, and multiple rotating pieces 34 rotate out of the fixed groove 22 and merge, so that the bottom of the sampling drill bit 20 can be covered.

[0060] The connecting device 4 includes a rotating rod 40 fixed on the bottom rotating piece 34, and one end of the rotating rod 40 close to the inner wall of the sampling drill bit 20 is fixed with a micro motor 41, and the micro motor is fixed on the rotating piece 34 through a motor frame;

[0061] The other end of the rotating rod 40 is fixedly connected to a vertical cylinder 42, and the bottom of the vertical cylinder 42 is connected to a sampling structure 43, and the sampling structure 43 can take the cover sheet 24 out of the placement groove 23;

[0062] Implementation method 1:

[0063] The sampling structure 43 includes a support frame 430 fixed to the bottom of the vertical cylinder 42, and a support plate 431 is arranged inside the support frame 430, a second micro motor 432 is fixed to one side of the support plate 431, and the output end of the second micro motor 432 is rotatably connected to the support frame 430 through a bearing, and the second micro motor 432 is fixed to the outside of the support frame 430 through a motor frame;

[0064] The support plate 431 is provided with a groove 433, and a second micro cylinder 434 is fixed to the bottom of the groove 433, and a clamping plate 435 is fixedly connected to the output end of the second micro cylinder 434;

[0065] A connecting groove 436 connected to the placement groove 23 is provided at the bottom of the sampling drill bit 20. The clamping plate 435 can drive the covering sheet 24 to be taken out from the bottom of the connecting groove 436, and the moving ring 336 can also cover the connecting groove 436.

[0066] When a plurality of cover sheets 24 are stacked vertically inside the placement groove 23;

[0067] The clamping plate 435 is located at the bottom of the cover sheet 24. The micro cylinder 434 drives the clamping plate 435 to slide inside the groove 433, so as to clamp the bottom of the cover sheet 24. When the bottom rotating sheet 34 rotates out of the fixed groove 22, the micro motor 41 and the rotating rod 40 rotate, and the clamping plate 435 can pull the cover sheet 24 out of the placement groove 23 and the connecting groove 436. When the rotating sheet 34 does not rotate;

[0068] When the micro motor 1 41 is turned on, the micro motor 1 41 drives the rotating rod 40 to continue rotating, so that the rotating piece 34 can be completely pulled out from the inside of the placement groove 23;

[0069] Thus, the connecting groove 436 can drive the outer side of the cover sheet 24 to support it, and then the second micro cylinder 434 is opened to release the clamping plate 435 from pulling the cover sheet 24, and at the same time, the second micro motor 432 is turned on to rotate the support plate 431 and the clamping plate 435 to the top of the cover sheet 24;

[0070] When the cover sheet 24 is pulled out, the top cover sheet 24 falls to the position of the connecting groove 436, so that the clamping plate 435 can be moved to the inside of the connecting groove 436, and the cover sheet 24 is clamped by the vertical cylinder 42 micro motor 432, and used reciprocatingly;

[0071] When the pressure detector 21 detects pressure;

[0072] The double-headed motor 331 is turned on to drive the rotating piece 34, the rotating rod 40 and the supporting plate 431 to return to the inside of the fixed groove 22, and then the moving ring 336 moves down to cover the fixed groove 22, so that the soil can lift the covering piece 24 and continue to enter the sampling tube 11.

[0073] Implementation method 2:

[0074] The sampling structure 43 includes a support frame 430 fixed to the bottom of the vertical cylinder 42, and a support plate 431 is arranged inside the support frame 430, a second micro motor 432 is fixedly connected to one side of the support plate 431, and the output end of the second micro motor 432 is rotatably connected to the support frame 430 through a bearing, and the second micro motor 432 is fixed to the outside of the support frame 430 through a motor frame;

[0075] The support plate 431 is provided with a groove 433, and a second micro cylinder 434 is fixed at the bottom of the groove 433, a clamping plate 435 is fixedly connected to the output end of the second micro cylinder 434, and a second micro pressure detector 437 is fixed inside the groove 433;

[0076] The bottom of the sampling drill bit 20 is provided with a connecting groove 436 connected with the placement groove 23, and the clamping plate 435 can drive the covering sheet 24 to be taken out from the bottom of the connecting groove 436;

[0077] A push rod 438 is fixed on the support plate 431, and the push rod 438 can drive the cover sheet 24 to move;

[0078] A support member 44 is disposed inside the placement groove 23, and the support member 44 positions the cover sheet 24, and the top rod 438 can drive the support member 44 to move;

[0079] The support member 44 includes a vertical slot 440 disposed inside the placement slot 23, and a compression spring 441 is fixed inside the vertical slot 440, and a moving plate 442 is fixed at one end of the compression spring 441;

[0080] When a plurality of cover sheets 24 are stacked in a front-to-back manner inside the placement groove 23;

[0081] The clamping plate 435 is located at the bottom of the cover sheet 24. The micro cylinder 434 drives the clamping plate 435 to slide inside the groove 433, so as to clamp the bottom of the cover sheet 24. When the bottom rotating sheet 34 rotates out of the fixed groove 22, the micro motor 41 and the rotating rod 40 rotate, and the clamping plate 435 can pull the cover sheet 24 out of the placement groove 23 and the connecting groove 436. When the rotating sheet 34 does not rotate;

[0082] When the micro motor 1 41 is turned on, the micro motor 1 41 drives the rotating rod 40 to continue rotating, so that the rotating piece 34 can be completely pulled out from the inside of the placement groove 23;

[0083] Thus, the connecting groove 436 can drive the outer side of the cover sheet 24 to support it, and then the second micro cylinder 434 is opened to release the clamping plate 435 from pulling the cover sheet 24, and at the same time, the second micro motor 432 is turned on to rotate the support plate 431 and the clamping plate 435 to the top of the cover sheet 24;

[0084] The compression spring 441 drives the movable plate 442 to squeeze the covering piece 24, so that when the support plate 431 rotates back to the fixed groove 22 from the outside, the front side of the push rod 438 on the support plate 431 squeezes the outside of the covering plate, and the rear side squeezes the movable plate 442, and the movable plate 442 is squeezed into the vertical groove 440 until the covering piece 24 on the rear side falls into the groove 433 and is detected by the pressure detector 437, and the squeezing stops, and this squeezing will not affect the rotating piece 34 entering the fixed groove 22, and then the clamping plate 435 can clamp the covering piece 24, and when the covering piece 24 is pulled out, the movable plate 442 is pushed out by the compression spring 441, and the force of the compression spring 441 is relatively small, squeezing the rear side of the covering piece 24 to prevent the covering piece 24 from falling into the connecting groove 436, and the clamping plate 435 supports it and is used reciprocatingly;

[0085] When the pressure detector 21 detects pressure;

[0086] The double-headed motor 331 is turned on to drive the rotating piece 34, the rotating rod 40 and the supporting plate 431 to return to the inside of the fixed groove 22, and then the moving ring 336 moves down to cover the fixed groove 22, so that the soil can lift the covering piece 24 and continue to enter the sampling tube 11.

[0087] In this solution, the circuit operation is an existing conventional circuit, and the circuits and controls involved in the present invention are all existing technologies, which will not be described in detail here.

[0088] 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.

[0089] 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 and excavation device for geological exploration, comprising an excavation support (1), a driving machine (10) arranged on the excavation support (1) and a sampling tube (11) arranged at the bottom of the driving machine (10), characterized in that: The bottom of the sampling tube (11) is connected to a sampling auxiliary device (2), and the driving machine (10) can drive the sampling tube (11) and the sampling auxiliary device (2) to rotate for sampling; The sampling auxiliary device (2) comprises a sampling drill bit (20) connected to the bottom of the sampling tube (11), and the bottom of the sampling drill bit (20) is connected to a pressure detector (21), a fixing groove (22) is arranged inside the sampling drill bit (20), and a cover component (3) is connected inside the fixing groove (22), and the cover component (3) can control the opening and closing of the bottom of the sampling drill bit (20); The sampling drill bit (20) is provided with a placement groove (23) on the outside, a cover sheet (24) is provided inside the placement groove (23), a connecting device (4) is provided on the cover assembly (3), and the cover assembly (3) can drive the connecting device (4) to take the cover sheet (24) out of the placement groove (23); The covering assembly (3) comprises a rotating gear ring (30) rotatably connected to the interior of the fixing groove (22), and a plurality of driving gears (31) are meshedly connected to the interior of the rotating gear ring (30), and a fixing rod (32) is connected to the center of the driving gear (31), and both ends of the fixing rod (32) are rotatably connected to the interior of the fixing groove (22); A driving device (33) is connected to the outside of any one of the driving gears (31), and the driving device (33) can drive the fixing rod (32) to rotate, and the driving device (33) can cover the outside of the fixing groove (22); A rotating piece (34) is sleeved on the outer side of the fixing rod (32), and a plurality of the rotating pieces (34) are arranged in sequence; The rotating piece (34) at the bottom is connected to the connecting device (4); The connecting device (4) comprises a rotating rod (40) arranged on the bottom rotating plate (34), one end of the rotating rod (40) close to the inner wall of the sampling drill bit (20) is connected to a micro motor (41), and the micro motor (41) is arranged on the rotating plate (34) through a motor frame; The other end of the rotating rod (40) is connected to a vertical cylinder (42), the bottom of the vertical cylinder (42) is connected to a sampling structure (43), and the sampling structure (43) can take the cover sheet (24) out of the placement groove (23); The sampling structure (43) comprises a support frame (430) arranged at the bottom of the vertical cylinder (42), and a support plate (431) is arranged inside the support frame (430), one side of the support plate (431) is connected to a second micro motor (432), and the output end of the second micro motor (432) is rotatably connected to the support frame (430), and the second micro motor (432) is arranged outside the support frame (430) through a motor frame; The support plate (431) is provided with a groove (433), and a second micro cylinder (434) is provided at the bottom of the groove (433), and the output end of the second micro cylinder (434) is connected to a clamping plate (435); The bottom of the sampling drill bit (20) is provided with a connecting groove (436) connected to the placement groove (23), and the clamping plate (435) can drive the covering sheet (24) to be taken out from the bottom of the connecting groove (436).

2. A sampling and excavation device for geological exploration according to claim 1, characterized in that: The driving device (33) comprises a connecting gear (330) meshingly connected to the outside of the driving gear (31); a double-headed motor (331) is connected at the center of the connecting gear (330); and a covering member (332) capable of covering the outside of the fixing groove (22) is connected to the top of the double-headed motor (331).

3. A sampling and excavation device for geological exploration according to claim 2, characterized in that: The cover member (332) includes a screw rod (333) connected to the top of the double-headed motor (331); the top of the sampling drill bit (20) is provided with a positioning groove (334) rotatably connected to the top of the screw rod (333); a moving block (335) is sleeved on the outer side of the screw rod (333); and the outer side of the moving block (335) is slidably connected to the inner wall of the positioning groove (334): One side of the moving block (335) passes through the positioning groove (334) and is connected to a moving ring (336), and the moving ring (336) is slidably connected to the inside of the sampling drill bit (20).

4. The sampling and excavation device for geological exploration according to claim 1, characterized in that: The sampling structure (43) comprises a support frame (430) arranged at the bottom of the vertical cylinder (42), and a support plate (431) is arranged inside the support frame (430), one side of the support plate (431) is connected to a second micro motor (432), and the output end of the second micro motor (432) is rotatably connected to the support frame (430), and the second micro motor (432) is arranged outside the support frame (430) through a motor frame; The support plate (431) is provided with a groove (433), and a second micro cylinder (434) is provided at the bottom of the groove (433); an output end of the second micro cylinder (434) is connected to a clamping plate (435), and a second micro pressure detector (437) is provided inside the groove (433); The bottom of the sampling drill bit (20) is provided with a connecting groove (436) connected to the placement groove (23), and the clamping plate (435) can drive the covering sheet (24) to be taken out from the bottom of the connecting groove (436); The support plate (431) is provided with a push rod (438), and the push rod (438) can drive the cover sheet (24) to move; A support member (44) is provided inside the placement groove (23), and the support member (44) is used to position the cover sheet (24). The top rod (438) can drive the support member (44) to move.

5. A sampling and excavation device for geological exploration according to claim 4, characterized in that: The support member (44) comprises a vertical groove (440) arranged inside the placement groove (23), and a compression spring (441) is arranged inside the vertical groove (440), and one side of the compression spring (441) is connected to a moving plate (442).

6. The sampling and excavation device for geological exploration according to claim 1, characterized in that: The material of the covering sheet (24) is configured to be elastic.

7. The sampling and excavation device for geological exploration according to claim 4, characterized in that: The communication groove (436) is arranged in a cross shape.

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