Sampling device for geological exploration

Abstract

The invention belongs to the technical field of underground soil sampling, and particularly discloses a sampling device for geological exploration, the sampling device comprises a diaphragm type bottom blocking mechanism, a casing assembly, a lifting mechanism and a sample receiving assembly, the diaphragm type bottom blocking mechanism comprises an annular soil breaking shovel, an opening and closing blocking assembly and a blocking driving assembly. According to the diaphragm type bottom blocking mechanism, through six sets of opening and closing blocking assemblies which are annularly arranged, elastic thin plates can be automatically spliced into a circle when an arc-shaped swing rod is unfolded, and the elastic thin plates can retract into a driving ring with the thin wall thickness when the arc-shaped swing rod is folded; by means of the thin-wall baffle opening and closing design, the blocking effect can be guaranteed, meanwhile, the wall thickness of the driving ring is controlled within a small range, and therefore the resistance for inserting the sampling barrel into the ground is reduced.

Description

Technical Field

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

[0002] In geological exploration, collecting soil samples from the shallow surface is a simple but tedious task, especially in remote and harsh areas such as the Gobi Desert. Because the sampling points are numerous and relatively remote, unmanned sampling devices are now being used more and more widely. This operating mode is to install the sampling device on a vehicle, and after reaching the target location, it is placed in the sampling area through the lifting device on the vehicle, and then automatically completed sampling before being hoisted back to the vehicle.

[0003] The Gobi region has high temperatures during the day and low temperatures at night, making it unsuitable for manual outdoor work. Therefore, the comfort and safety of operators staying in the vehicle are more guaranteed. In addition, the surface of the Gobi region is relatively small and there are no plants blocking it. The vehicle passability in unpaved areas is also relatively good (compared to mountainous areas). Therefore, the Gobi region is relatively suitable for the use of unmanned sampling equipment.

[0004] During general soil sampling, since soil is more likely to stick together, the sleeve is driven into the ground and then pulled out directly, and the soil inside the sleeve can be taken out along with it. However, the Gobi region is mostly sandy soil with low viscosity. When the sleeve is pulled out, the sand inside can easily slide off, making it difficult to ensure the stability of machine sampling. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes an underground sampling device for Gobi sandy soil working conditions; in order to solve the problem that sand easily slips out of the sampling tube, the present invention proposes a diaphragm-type bottom blocking mechanism, which can automatically form a circle of elastic thin plates when the arc-shaped swing arm is unfolded through six groups of opening and closing blocking components arranged in a ring, and can retract into a driving ring with a thinner wall when the arc-shaped swing arm is folded; this thin-walled baffle opening and closing design can ensure the sealing effect while controlling the wall thickness of the driving ring within a smaller range, thereby reducing the resistance to inserting the sampling tube into the ground.

[0006] Moreover, since the target samples do not include surface soil samples, in order to prevent the surface soil samples from falling into the lifting sample box when the samples are collected, the present invention also proposes a closed auger mechanism, which simultaneously realizes the sliding control of the square lock block through the rotation direction of the auger motor, and utilizes the auger motor originally used to drive the spiral blades to simultaneously realize the flipping direction limitation and unlocking of the flip baffle, which can prevent the surface soil samples from falling and entering the lifting sample box when the samples are collected, and allow the surface soil samples to fall and fall to the ground after the samples are collected.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a sampling device for geological exploration, including a diaphragm-type bottom blocking mechanism, a housing assembly, a lifting mechanism, and a sample receiving assembly. The diaphragm-type bottom blocking mechanism includes an annular earth-breaking shovel, an opening and closing blocking assembly, and a blocking drive assembly. The annular earth-breaking shovel is rotatably arranged on the blocking drive assembly. The opening and closing blocking assembly is annularly arranged between the annular earth-breaking shovel and the blocking drive assembly. The lifting mechanism is arranged in the housing assembly. The sample receiving assembly is arranged in the housing assembly. The blocking drive assembly is arranged on the lifting mechanism. Furthermore, the blocking drive assembly includes a driving ring and a driving gear ring, the driving gear ring is fixed in the driving ring, the annular earth-breaking shovel is rotatably arranged at the bottom of the driving ring, and the opening and closing blocking assembly is evenly distributed in six groups in a ring.

[0008] The expansion and folding of the opening and closing blocking assembly can be driven by the relative rotation between the annular earth-breaking blade and the driving ring.

[0009] Preferably, the annular earth-breaking shovel is provided with a countersunk groove, and rotating pins are evenly distributed in a ring on the countersunk groove. The opening and closing blocking assembly includes an arc-shaped swing rod, an elastic thin plate and an anti-slip elastic rope. The arc-shaped swing rod is rotatably arranged on the rotating pin, and the end of the arc-shaped swing rod is provided with a fan-shaped gear part that meshes with the driving gear ring. One side of the elastic thin plate is provided on the arc-shaped swing rod, and a hollow interlayer is provided on the driving ring. The elastic thin plate is slidably arranged in the hollow interlayer, and the anti-slip elastic rope is arranged on the other side of the elastic thin plate, and the anti-slip elastic rope is located in the hollow interlayer.

[0010] The elastic thin plate is an elastic thin plate. When the arc-shaped swing arm is in a folded state, the elastic thin plate retracts into the hollow interlayer; when the arc-shaped swing arm is in an unfolded state, the elastic thin plate unfolds and lies flat; through the synchronous unfolding of six sets of opening and closing blocking components, the bottom of the drive ring can be closed, thereby preventing the soil above the elastic thin plate from sliding out naturally when the sampling tube is taken out from the ground.

[0011] As a further preferred embodiment of the present invention, a cutting edge is provided at the bottom of the annular earth-breaking shovel, and external vertical plates are evenly distributed in an annular pattern on the outer wall of the annular earth-breaking shovel.

[0012] Due to the presence of the external vertical plate, the annular breaker blade has a large rotational resistance in the soil. Therefore, when the soil has a fixed effect on the annular breaker blade, the rotary drive device can realize the telescopic drive of the opening and closing blocking component when driving the sampling tube and the drive ring to rotate.

[0013] Furthermore, it also includes a closed auger mechanism, which includes an opening and closing auger assembly, a locking and releasing assembly and an auger motor, and the locking and releasing assembly is arranged at the bottom of the opening and closing auger assembly.

[0014] The closed auger mechanism can isolate shallow soil samples by limiting the flip angle of the flip baffle, thereby preventing shallow soil samples from entering the lifting sample box when the lifting sample box is used to collect target samples.

[0015] Preferably, the opening and closing auger assembly includes an auger sleeve, an auger shaft, a flip baffle and an elastic sheet. The output shaft of the auger motor is connected to the auger shaft. The auger sleeve is rotatably arranged on the outside of the auger shaft. A spiral blade is provided on the auger sleeve. A flip baffle is provided with a flip shaft. The flip baffle is rotatably arranged on the bottom edge of the spiral blade through the flip shaft. The elastic sheet is arranged between the spiral blade and the flip baffle.

[0016] Under the elastic force of the elastic sheet, the flip baffle has a natural tendency to return to the vertical direction. However, when the flip baffle is subjected to a thrust from the soil, it can also overcome the elastic force of the elastic sheet and deflect.

[0017] As a further preference of the present invention, the locking release assembly includes a limiting chain disc and a cam, the limiting chain disc is rotatably arranged on the auger shaft, the auger shaft is provided with a bottom chain disc matching the limiting chain disc, and the cam is fixed to the bottom of the auger shaft. Through the cooperation of the limiting chain disc and the bottom chain disc, the relative rotation angle of the auger shaft and the auger sleeve can be limited.

[0018] As a further preferred embodiment of the present invention, the locking release assembly also includes a square locking block and a flap unlocking spring. A square sliding sleeve is provided at the bottom of the auger sleeve. The square locking block is engaged and slidably arranged in the square sliding sleeve. A flap unlocking spring is provided between the square locking block and the square sliding sleeve. A fan-shaped groove is provided on the square locking block, and a fan-shaped boss is provided on the flip baffle. The rotation angle of the flip baffle can be limited by the cooperation of the fan-shaped groove and the fan-shaped boss.

[0019] The extension and retraction of the square locking block can be controlled by the rotation of the cam. When the fan-shaped groove and the fan-shaped boss are combined, the flip angle of the flip baffle is rigidly limited. At this time, the flip baffle can only flip toward the inner side of the spiral blade and cannot flip toward the outer side of the spiral blade; when the fan-shaped groove and the fan-shaped boss are separated, the flip direction of the flip baffle is no longer restricted.

[0020] Through the telescopic design of the square locking block, when the auger motor drives the spiral blade to rotate in the forward direction (that is, the soil in the sampling cylinder is transported to the top of the spiral blade), the flip baffle is automatically used to achieve a one-way blocking effect to prevent the soil from falling; and when the auger motor drives the spiral blade to rotate in the reverse direction (that is, the soil in the sampling cylinder is transported to the bottom of the spiral blade), the flip direction restriction of the flip baffle is automatically released, so that the soil sample temporarily stored above can fall; through the above structural design, the locking and unlocking control of the flip baffle can be automatically achieved by switching the rotation direction of the auger motor.

[0021] Furthermore, the housing assembly includes a bottom plate, folding legs and an outer shell, the folding legs are arranged below the bottom plate, and the outer shell is arranged above the bottom plate.

[0022] Preferably, the lifting mechanism includes a fixed plate, a telescopic push rod, a driving source, a lifting push plate and a rotary drive assembly, the fixed plate is fixedly connected to the outer shell, the auger motor is arranged on the fixed plate, the telescopic push rod is arranged on the fixed plate, the driving source is arranged on the outer shell, the lifting push plate is arranged on the telescopic part of the telescopic push rod, and the rotary drive assembly is arranged on the lifting push plate.

[0023] By extending and retracting the telescopic push rod, the lifting push plate can be driven to move up and down, thereby realizing the functions of inserting the annular earth-breaking shovel, the driving ring and the sampling tube into the ground and taking them out from the ground.

[0024] As a further preference of the present invention, the rotary drive assembly includes a rotary drive device and a sampling cylinder. The sampling cylinder is rotatably arranged in the lifting push plate. The drive ring is fixed to the sampling cylinder. The rotary drive device is arranged on the lifting push plate. The sampling cylinder can be driven to rotate by the rotary drive device.

[0025] As a further preferred embodiment of the present invention, the sample receiving assembly includes a sliding device and a lifting sample box, the sliding device is arranged on the bottom plate, the lifting sample box is arranged on the sliding device, and the inner ring of the lifting sample box is evenly distributed with internal vertical plates that cooperate with the external vertical plates.

[0026] The lifting sample box can be combined with the external vertical plate through the internal vertical plate. When the annular soil-breaking shovel is not inside the soil, the rotation of the annular soil-breaking shovel is still restricted, thereby achieving the technical effect of the folding opening and closing blocking component.

[0027] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The relative rotation between the annular earth-breaking blade and the driving ring can drive the opening and closing blocking assembly to unfold and fold.

[0028] (2) The elastic sheet is an elastic sheet. When the arc-shaped swing arm is in a folded state, the elastic sheet retracts into the hollow interlayer; when the arc-shaped swing arm is in an unfolded state, the elastic sheet unfolds and lays flat; by synchronously unfolding the six sets of opening and closing blocking components, the bottom of the driving ring can be closed, thereby preventing the soil above the elastic sheet from sliding out naturally when the sampling tube is taken out from the ground.

[0029] (3) Due to the existence of the external vertical plate, the annular breaker blade has a large rotational resistance in the soil. Therefore, when the soil has a fixed effect on the annular breaker blade, the rotary drive device can realize the telescopic drive of the opening and closing blocking component when driving the sampling tube and the drive ring to rotate.

[0030] (4) The closed auger mechanism can isolate shallow soil samples by limiting the flip angle of the flip baffle, thereby preventing shallow soil samples from entering the lifting sample box when the lifting sample box is used to collect the target sample.

[0031] (5) Under the elastic force of the elastic sheet, the flip baffle has a natural tendency to return to the vertical direction. However, when the flip baffle is pushed by the soil, it can also overcome the elastic force of the elastic sheet and deflect.

[0032] (6) The extension and retraction of the square lock block can be controlled by the rotation of the cam. When the fan-shaped groove and the fan-shaped boss are combined, the flip angle of the flip baffle is rigidly limited. At this time, the flip baffle can only flip toward the inner side of the spiral blade and cannot flip toward the outer side of the spiral blade; when the fan-shaped groove and the fan-shaped boss are separated, the flip direction of the flip baffle is no longer restricted.

[0033] (7) Through the telescopic design of the square lock block, when the auger motor drives the spiral blade to rotate in the forward direction (that is, the soil in the sampling tube is transported to the top of the spiral blade), the flip baffle can automatically achieve a one-way blocking effect to prevent the soil from falling; and when the auger motor drives the spiral blade to rotate in the reverse direction (that is, the soil in the sampling tube is transported to the bottom of the spiral blade), the flip direction restriction of the flip baffle is automatically released, so that the soil sample temporarily stored above can fall. Through the above structural design, the locking and unlocking control of the flip baffle can be automatically achieved by switching the rotation direction of the auger motor.

[0034] (8) By extending and retracting the telescopic push rod, the lifting push plate can be driven up and down, thereby realizing the function of inserting the annular earth-breaking blade, the driving ring and the sampling tube into the ground and taking them out from the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A three-dimensional diagram of a sampling device for geological exploration proposed by the present invention; Figure 2This is a front view of a sampling device for geological exploration proposed by the present invention; Figure 3 This is a left side view of a sampling device for geological exploration proposed by the present invention; Figure 4 for Figure 2 A cross-sectional view along the cutting line AA; Figure 5 for Figure 3 A cross-sectional view along the cutting line BB; Figure 6 for Figure 5 A cross-sectional view along the cutting line CC; Figure 7 This is a schematic diagram of the exploded structure of part of the closed auger mechanism; Figure 8 It is a schematic diagram of the exploded structure of a part of the structure of the diaphragm bottom blocking mechanism; Figure 9 It is a schematic diagram of the exploded structure of part of the lifting mechanism; Figure 10 for Figure 5 A partial enlarged view of point Ⅰ in the middle; Figure 11 for Figure 6 A partial enlarged view of the middle II; Figure 12 for Figure 4 A partial enlarged view of point III in the middle; Figure 13 This is a schematic diagram of the position of the lifting sample box when receiving samples; Figure 14 This is a simplified top view of the opening and closing blocking component; Figure 15 Schematic diagram of the flipping of the flip baffle.

[0036] Among them, 1. Diaphragm bottom blocking mechanism, 2. Closed auger mechanism, 3. Casing assembly, 4. Lifting mechanism, 5. Sample receiving assembly, 6. Annular earth-breaking shovel, 7. Opening and closing blocking assembly, 8. Blocking drive assembly, 9. Blade, 10. Countersunk groove, 11. Rotating pin, 12. External vertical plate, 13. Arc-shaped swing rod, 14. Elastic thin plate, 15. Anti-slip elastic rope, 16. Drive ring, 17. Drive gear ring, 18. Fan-shaped gear part, 19. Hollow interlayer, 20. Opening and closing auger assembly, 21. Locking release assembly, 22. Auger sleeve, 23. Auger center shaft, 24. Flip Turn baffle, 25. Elastic sheet, 26. Limiting tooth plate, 27. Square locking block, 28. Flip unlocking spring, 29. Cam, 30. Spiral blade, 31. Square sliding sleeve, 32. Bottom tooth plate, 33. Flip plate shaft, 34. Fan-shaped boss, 35. Fan-shaped groove, 36. Bottom plate, 37. Folding legs, 38. Housing, 39. Fixed plate, 40. Telescopic push rod, 41. Driving source, 42. Lifting push plate, 43. Rotary drive assembly, 44. Rotary drive device, 45. Sampling cylinder, 46. Sliding device, 47. Lifting sample box, 48. Internal vertical plate, 49. Auger motor.

[0037] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0040] like Figures 1 to 12As shown, the present invention proposes a sampling device for geological exploration, including a diaphragm bottom blocking mechanism 1, a housing assembly 3, a lifting mechanism 4 and a sample receiving assembly 5. The diaphragm bottom blocking mechanism 1 includes an annular earth-breaking shovel 6, an opening and closing blocking assembly 7 and a blocking drive assembly 8. The annular earth-breaking shovel 6 is rotatably arranged on the blocking drive assembly 8. The opening and closing blocking assembly 7 is annularly arranged between the annular earth-breaking shovel 6 and the blocking drive assembly 8. The lifting mechanism 4 is arranged in the housing assembly 3, the sample receiving assembly 5 is arranged in the housing assembly 3, and the blocking drive assembly 8 is arranged on the lifting mechanism 4. The blocking drive assembly 8 includes a driving ring 16 and a driving ring gear 17. The driving ring gear 17 is fixed to the driving ring 16. The annular earth-breaking blade 6 is rotatably arranged at the bottom of the driving ring 16. Six groups of opening and closing blocking assemblies 7 are evenly distributed in a ring.

[0041] The relative rotation between the annular earth-breaking blade 6 and the driving ring 16 can drive the opening and closing blocking assembly 7 to be unfolded and folded.

[0042] The annular earth-breaking shovel 6 is provided with a countersunk groove 10, and rotating pins 11 are evenly distributed in an annular manner on the countersunk groove 10. The opening and closing blocking assembly 7 includes an arc-shaped swing rod 13, an elastic thin plate 14 and an anti-slip elastic rope 15. The arc-shaped swing rod 13 is rotatably arranged on the rotating pin 11, and the end of the arc-shaped swing rod 13 is provided with a fan-shaped gear portion 18 meshing with the drive ring gear 17. One side of the elastic thin plate 14 is provided on the arc-shaped swing rod 13, and a hollow interlayer 19 is provided on the drive ring 16. The elastic thin plate 14 is slidably arranged in the hollow interlayer 19, and the anti-slip elastic rope 15 is arranged on the other side of the elastic thin plate 14, and the anti-slip elastic rope 15 is located in the hollow interlayer 19.

[0043] The elastic sheet 14 is an elastic sheet. When the arc-shaped swing arm 13 is in a folded state, the elastic sheet 14 retracts into the hollow interlayer 19; when the arc-shaped swing arm 13 is in an unfolded state, the elastic sheet 14 is unfolded and laid flat; through the synchronous unfolding of the six groups of opening and closing blocking components 7, the bottom of the drive ring 16 can be closed, thereby preventing the soil above the elastic sheet 14 from sliding out naturally when the sampling tube 45 is taken out from the ground.

[0044] The bottom of the annular earth-breaking blade 6 is provided with a cutting edge 9 , and the outer wall of the annular earth-breaking blade 6 is provided with external vertical plates 12 evenly distributed in an annular manner.

[0045] Due to the presence of the external vertical plate 12, the annular breaker 6 has a large rotational resistance in the soil. Therefore, when the soil has a fixing effect on the annular breaker 6, the rotary drive device 44 can realize the telescopic drive of the opening and closing blocking component 7 when driving the sampling tube 45 and the drive ring 16 to rotate.

[0046] It also includes a closed auger mechanism 2, which includes an opening and closing auger assembly 20, a locking and releasing assembly 21 and an auger motor 49. The locking and releasing assembly 21 is arranged at the bottom of the opening and closing auger assembly 20.

[0047] The closed auger mechanism 2 can isolate shallow soil samples by limiting the flip angle of the flip baffle 24, thereby preventing shallow soil samples from entering the lifting sample box 47 when the lifting sample box 47 is used to collect target samples.

[0048] The opening and closing auger assembly 20 includes an auger sleeve 22, an auger central shaft 23, a flip baffle 24 and an elastic sheet 25. The output shaft of the auger motor 49 is connected to the auger central shaft 23. The auger sleeve 22 is rotatably arranged on the outside of the auger central shaft 23. A spiral blade 30 is provided on the auger sleeve 22, and a flip baffle 24 is provided with a flip shaft 33. The flip baffle 24 is rotatably arranged on the bottom edge of the spiral blade 30 through the flip shaft 33. The elastic sheet 25 is arranged between the spiral blade 30 and the flip baffle 24.

[0049] Under the elastic force of the elastic sheet 25 , the flip baffle 24 naturally tends to return to the vertical direction. However, when the flip baffle 24 is pushed by the soil, it can overcome the elastic force of the elastic sheet 25 and deflect.

[0050] The locking release assembly 21 includes a limiting chain disc 26 and a cam 29. The limiting chain disc 26 is rotatably arranged on the auger shaft 23. The auger shaft 23 is provided with a bottom chain disc 32 that matches the limiting chain disc 26. The cam 29 is fixed to the bottom of the auger shaft 23. Through the cooperation of the limiting chain disc 26 and the bottom chain disc 32, the relative rotation angle of the auger shaft 23 and the auger sleeve 22 can be limited.

[0051] The locking release assembly 21 also includes a square locking block 27 and a flap unlocking spring 28. A square sleeve 31 is provided at the bottom of the auger sleeve 22. The square locking block 27 is engaged and slidably arranged in the square sleeve 31. A flap unlocking spring 28 is provided between the square locking block 27 and the square sleeve 31. A fan-shaped groove 35 is provided on the square locking block 27, and a fan-shaped boss 34 is provided on the flip baffle 24. The cooperation of the fan-shaped groove 35 and the fan-shaped boss 34 can limit the rotation angle of the flip baffle 24.

[0052] The extension and retraction of the square locking block 27 can be controlled by the rotation of the cam 29. When the fan-shaped groove 35 and the fan-shaped boss 34 are combined, the flip angle of the flip baffle 24 is rigidly limited. At this time, the flip baffle 24 can only flip toward the inside of the spiral blade 30 and cannot flip toward the outside of the spiral blade 30; when the fan-shaped groove 35 and the fan-shaped boss 34 are separated, the flip direction of the flip baffle 24 is no longer restricted.

[0053] Through the telescopic design of the square locking block 27, when the auger motor 49 drives the spiral blade 30 to rotate forward (that is, to transport the soil in the sampling cylinder 45 to the top of the spiral blade 30), the flip baffle 24 is automatically used to achieve a one-way blocking effect to prevent the soil from falling; and when the auger motor 49 drives the spiral blade 30 to rotate reversely (that is, to transport the soil in the sampling cylinder 45 to the bottom of the spiral blade 30), the flip direction restriction of the flip baffle 24 is automatically released, so that the soil sample temporarily stored above can fall; through the above-mentioned structural design, the locking and unlocking control of the flip baffle 24 can be automatically achieved by switching the rotation direction of the auger motor 49.

[0054] The housing assembly 3 includes a bottom plate 36 , folding legs 37 and a shell 38 . The folding legs 37 are arranged below the bottom plate 36 , and the shell 38 is arranged above the bottom plate 36 .

[0055] The lifting mechanism 4 includes a fixed plate 39, a telescopic push rod 40, a driving source 41, a lifting push plate 42 and a rotating drive assembly 43. The fixed plate 39 is fixedly connected to the outer shell 38, the auger motor 49 is arranged on the fixed plate 39, the telescopic push rod 40 is arranged on the fixed plate 39, the driving source 41 is arranged on the outer shell 38, the lifting push plate 42 is arranged on the telescopic part of the telescopic push rod 40, and the rotating drive assembly 43 is arranged on the lifting push plate 42.

[0056] By extending and retracting the telescopic push rod 40 , the lifting push plate 42 can be driven to move up and down, thereby realizing the function of inserting the annular earth-breaking blade 6 , the driving ring 16 and the sampling tube 45 into the ground and taking them out from the ground.

[0057] The rotary drive assembly 43 includes a rotary drive device 44 and a sampling cylinder 45. The sampling cylinder 45 is rotatably arranged in the lifting push plate 42. The drive ring 16 is fixed to the sampling cylinder 45. The rotary drive device 44 is arranged on the lifting push plate 42. The rotary drive device 44 can drive the sampling cylinder 45 to rotate.

[0058] The sample receiving assembly 5 includes a sliding device 46 and a lifting sample box 47. The sliding device 46 is arranged on the bottom plate 36, and the lifting sample box 47 is arranged on the sliding device 46. The inner ring of the lifting sample box 47 is evenly distributed with internal vertical plates 48 that cooperate with the external vertical plates 12.

[0059] The lifting sample box 47 can be combined with the external vertical plate 12 through the internal vertical plate 48. When the annular breaker 6 is not inside the soil, the rotation of the annular breaker 6 is still restricted, thereby achieving the technical effect of the folding and opening and closing blocking component 7.

[0060] like Figure 13As shown, the area between the height of the flip baffle 24 and the height of the opening and closing blocking assembly 7 is the target area M for sampling. By controlling the maximum extension amplitude of the telescopic push rod 40, the depth of the M area relative to the ground surface can be controlled. By controlling the retraction amplitude of the telescopic push rod 40 when the sample is received, the height of the M area itself can be controlled. The soil sample below the M area will fall under the action of its own weight when the sampling tube 45 is moved out of the ground. The soil sample below the M area will be blocked above by the flip baffle 24. When the reverse flip restriction of the flip baffle 24 is released, the soil sample above the M area can fall.

[0061] like Figure 14 As shown, six groups of elastic sheets 14 consisting of three arcuate sides can form a complete circle, wherein the three arcuate sides a, b, and c are completely equal (which can be regarded as a variation of the equilateral triangle shown by the dotted line), so that b can only coincide with a after folding; point A represents the rotation center of the arcuate swing arm 13, that is, the position of the sector gear portion 18, and point B represents the position of the anti-slip elastic rope 15. The anti-slip elastic rope 15 continuously applies tension to the elastic sheet 14 at point B, so when the arcuate swing arm 13 is folded, the elastic sheet 14 will retract toward the hollow interlayer 19.

[0062] like Figure 15 As shown, under the elastic force of the elastic sheet 25, the flip baffle 24 has a natural tendency to reset to the vertical direction; when the fan-shaped boss 34 and the fan-shaped groove 35 are combined, the flip baffle 24 can only flip within the range of α (equivalent to a one-way valve plate), and the soil sample can pass through the flip baffle 24 from left to right, but cannot move from right to left; when the fan-shaped boss 34 and the fan-shaped groove 35 are separated, the flipping direction of the flip baffle 24 is not restricted, and the soil sample can freely pass through the flip baffle 24.

[0063] In specific use, since the sampling tube 45 rotates only within a certain range, the rotation drive device 44 can be driven by a motor and a gear, or a push rod or other driving forms; The lifting push plate 42 is driven to move up and down by a telescopic push rod 40 fixed on the fixed plate 39: When the telescopic push rod 40 is a hydraulic push rod, the driving source 41 is a small hydraulic pump. The advantage of hydraulic drive is large thrust, but the disadvantage is high cost. When the telescopic push rod 40 is a pneumatic push rod, the driving source 41 is a small air pressure pump. The advantage of air pressure drive is low cost, but the disadvantage is low thrust; When the telescopic push rod 40 is an electric push rod, the driving source 41 is a battery (the driving source 41 can also be eliminated and powered directly by a cable). The characteristic of electric drive is that the thrust and cost are relatively balanced. In specific use, the above or other appropriate main driving methods can be selected according to the working conditions.

[0064] After the housing assembly 3 is installed at the target sampling position, the height of the bottom plate 36 from the ground surface can be adjusted by adjusting the angle of the folding legs 37 .

[0065] The extension of the telescopic push rod 40 pushes the lifting push plate 42 downward, and at the same time drives the sampling cylinder 45 and the diaphragm bottom blocking mechanism 1 downward together. The annular soil breaking blade 6 is inserted into the soil through the blade 9. When the sampling cylinder 45 stops, the depth at which the opening and closing blocking assembly 7 is located is the bottom depth of the target sample. The sampling barrel 45 is then rotated by the rotary drive device 44. Since the annular earth-breaking blade 6 is now inserted into the ground and is difficult to rotate under the action of the external vertical plate 12, and the drive ring 16 is fixedly connected to the sampling barrel 45, the drive ring 16 and the annular earth-breaking blade 6 rotate relative to each other. At the same time, the drive ring 17 rotates itself and engages with the sector gear portion 18, causing the arc-shaped swing arm 13 to rotate and expand around the rotating pin 11 as the axis. When the arc-shaped swing arm 13 rotates and unfolds, it can overcome the elastic force of the anti-detachment elastic rope 15 and pull the elastic sheet 14 out of the hollow interlayer 19 until it forms a circle; at this time, there is still an excess part of the elastic sheet 14 located in the hollow interlayer 19; the function of the anti-detachment elastic rope 15 is to prevent the elastic sheet 14 from being completely pulled out of the hollow interlayer 19. As long as the elastic sheet 14 is not completely pulled out of the hollow interlayer 19, the elastic sheet 14 will retract along its own path when the arc-shaped swing arm 13 is folded.

[0066] Based on the soft characteristics of sand, the arc-shaped swing arm 13 can be fully expanded. When the expanded opening and closing blocking assembly 7 is assembled into a circle, the sampling tube 45 and the diaphragm-type bottom blocking mechanism 1 are taken out from the ground as a whole through the retraction of the telescopic push rod 40. Due to the blocking of the opening and closing blocking assembly 7, the soil sample below the opening and closing blocking assembly 7 will fall directly from the annular earth-breaking shovel 6, while the soil sample above the opening and closing blocking assembly 7 will not fall; when the sampling tube 45 stops again, the area between the flip baffle 24 and the opening and closing blocking assembly 7 is the target area for sampling, and the shallow soil sample above the flip baffle 24 will also be discarded in subsequent processes.

[0067] During the rising process of the sampling cylinder 45, the auger motor 49 is started and rotates the auger shaft 23. Due to the cooperation between the bottom toothed disc 32 and the limit toothed disc 26, there is a small relative rotation angle between the auger sleeve 22 and the auger shaft 23. When the two rotate relative to each other, the cam 29 supports the square locking block 27, and the square locking block 27 slides toward the outside of the square sliding sleeve 31. When the relative rotation angle between the two reaches the limit, the fan-shaped boss 34 and the fan-shaped groove 35 are combined. At this time, the rotation angle of the flip baffle 24 is limited by the fan-shaped groove 35 and can only flip toward the inside of the spiral blade 30. Therefore, when the spiral blade 30 rotates following the auger sleeve 22, it will transport the surface soil sample it contacts upward. At this time, the soil sample can push the flip baffle 24 into the interior of the spiral blade 30, but because the flip baffle 24 cannot flip back, the soil that has entered the top of the spiral blade 30 cannot fall back.

[0068] Then, the lifting sample box 47 is moved horizontally to the bottom of the annular breaker 6 through the sliding device 46, and the internal vertical plate 48 and the external vertical plate 12 are combined by the rising of the lifting sample box 47. Then, the sampling tube 45 is rotated in the opposite direction. At this time, although the annular breaker 6 has left the ground, it is in a state of being locked by the internal vertical plate 48. Therefore, when the driving ring 16 and the annular breaker 6 rotate relative to each other, the arc-shaped swing arm 13 will rotate and fold toward the edge position, and at the same time, the elastic thin plate 14 will retract toward the hollow interlayer 19.

[0069] After the opening and closing sealing component 7 is opened, the soil sample between the opening and closing sealing component 7 and the flip baffle 24 will fall into the lifting sample box 47; after completing the collection of the target soil sample, the lifting sample box 47 can be moved horizontally according to the reverse steps. A sampling window is also provided on the outer shell 38, and the sample can be transferred manually or automatically.

[0070] Then start the auger motor 49 in reverse. First, the auger sleeve 22 and the auger shaft 23 will rotate relative to each other. After the square locking block 27 loses the support of the cam 29, it will slide toward the center position of the auger shaft 23 under the elastic force of the flap unlocking spring 28, and separate the fan-shaped boss 34 and the fan-shaped groove 35. At this time, the flipping direction of the flip baffle 24 is no longer restricted. Therefore, when the auger sleeve 22 continues to rotate, it will transport the surface soil sample above itself downward, so that it will fall back to the ground through the annular breaker 6.

[0071] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0072] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A sampling device for geological exploration, characterized in that: The invention comprises a diaphragm bottom blocking mechanism (1), a housing assembly (3), a lifting mechanism (4) and a sample receiving assembly (5), wherein the diaphragm bottom blocking mechanism (1) comprises an annular earth-breaking shovel (6), an opening and closing blocking assembly (7) and a blocking drive assembly (8), wherein the annular earth-breaking shovel (6) is rotatably arranged on the blocking drive assembly (8), and the opening and closing blocking assembly (7) is annularly arranged between the annular earth-breaking shovel (6) and the blocking drive assembly (8), the lifting mechanism (4) is arranged in the housing assembly (3), the sample receiving assembly (5) is arranged in the housing assembly (3), and the blocking drive assembly (8) is arranged on the lifting mechanism (4); The blocking drive assembly (8) includes a driving ring (16) and a driving gear ring (17), wherein the driving gear ring (17) is fixed to the driving ring (16), the annular earth-breaking blade (6) is rotatably arranged at the bottom of the driving ring (16), and the opening and closing blocking assembly (7) is evenly distributed in an annular manner with six groups; The annular earth-breaking shovel (6) is provided with a countersunk groove (10), and a rotating pin (11) is evenly distributed in an annular manner on the countersunk groove (10). The opening and closing blocking assembly (7) comprises an arc-shaped swinging rod (13), an elastic thin plate (14) and an anti-slip elastic rope (15). The arc-shaped swinging rod (13) is rotatably arranged on the rotating pin (11), and the end of the arc-shaped swinging rod (13) is provided with a fan-shaped gear portion (18) meshing with the driving gear ring (17). One side of the elastic thin plate (14) is provided on the arc-shaped swinging rod (13), and a hollow interlayer (19) is provided on the driving ring (16). The elastic thin plate (14) is slidably arranged in the hollow interlayer (19), and the anti-slip elastic rope (15) is provided on the other side of the elastic thin plate (14), and the anti-slip elastic rope (15) is located in the hollow interlayer (19).

2. A sampling device for geological exploration according to claim 1, characterized in that: The bottom of the annular earth-breaking shovel (6) is provided with a blade portion (9), and the outer wall of the annular earth-breaking shovel (6) is provided with external vertical plates (12) evenly distributed in an annular manner.

3. A sampling device for geological exploration according to claim 2, characterized in that: It also includes a closed auger mechanism (2), the closed auger mechanism (2) including an opening and closing auger assembly (20), a locking and releasing assembly (21), and an auger motor (49), wherein the locking and releasing assembly (21) is arranged at the bottom of the opening and closing auger assembly (20).

4. A sampling device for geological exploration according to claim 3, characterized in that: The opening and closing auger assembly (20) comprises an auger sleeve (22), an auger shaft (23), a flip baffle (24) and an elastic sheet (25); the output shaft of the auger motor (49) is connected to the auger shaft (23); the auger sleeve (22) is rotatably arranged outside the auger shaft (23); a spiral blade (30) is provided on the auger sleeve (22); a flip baffle (24) is provided with a flip shaft (33); the flip baffle (24) is rotatably arranged on the bottom edge of the spiral blade (30) via the flip shaft (33); and the elastic sheet (25) is arranged between the spiral blade (30) and the flip baffle (24).

5. The sampling device for geological exploration according to claim 4, characterized in that: The locking release assembly (21) includes a limiting toothed disc (26) and a cam (29), wherein the limiting toothed disc (26) is rotatably arranged on the auger central shaft (23), and the auger central shaft (23) is provided with a bottom toothed disc (32) matching the limiting toothed disc (26), and the cam (29) is fixed to the bottom of the auger central shaft (23). Through the cooperation of the limiting toothed disc (26) and the bottom toothed disc (32), the relative rotation angle of the auger central shaft (23) and the auger sleeve (22) can be limited.

6. The sampling device for geological exploration according to claim 5, characterized in that: The locking release assembly (21) further comprises a square locking block (27) and a flap unlocking spring (28); a square sliding sleeve (31) is provided at the bottom of the auger sleeve (22); the square locking block (27) is engaged and slidably arranged in the square sliding sleeve (31); a flap unlocking spring (28) is provided between the square locking block (27) and the square sliding sleeve (31); a fan-shaped groove (35) is provided on the square locking block (27); a fan-shaped boss (34) is provided on the flip baffle (24); and the rotation angle of the flip baffle (24) can be limited by the cooperation of the fan-shaped groove (35) and the fan-shaped boss (34).

7. The sampling device for geological exploration according to claim 6, characterized in that: The housing assembly (3) comprises a bottom plate (36), folding legs (37) and an outer shell (38), wherein the folding legs (37) are arranged below the bottom plate (36) and the outer shell (38) is arranged above the bottom plate (36).

8. The sampling device for geological exploration according to claim 7, characterized in that: The lifting mechanism (4) includes a fixed plate (39), a telescopic push rod (40), a driving source (41), a lifting push plate (42) and a rotating driving assembly (43), wherein the fixed plate (39) is fixedly connected to the housing (38), the auger motor (49) is arranged on the fixed plate (39), the telescopic push rod (40) is arranged on the fixed plate (39), the driving source (41) is arranged on the housing (38), the lifting push plate (42) is arranged on the telescopic part of the telescopic push rod (40), and the rotating driving assembly (43) is arranged on the lifting push plate (42).

9. The sampling device for geological exploration according to claim 8, characterized in that: The rotary drive assembly (43) includes a rotary drive device (44) and a sampling cylinder (45). The sampling cylinder (45) is rotatably arranged in the lifting push plate (42). The drive ring (16) is fixed to the sampling cylinder (45). The rotary drive device (44) is arranged on the lifting push plate (42). The sampling cylinder (45) can be driven to rotate by the rotary drive device (44).

10. The sampling device for geological exploration according to claim 9, characterized in that: The sample receiving assembly (5) includes a sliding device (46) and a lifting sample box (47), wherein the sliding device (46) is arranged on the bottom plate (36), and the lifting sample box (47) is arranged on the sliding device (46), and the lifting sample box (47) is evenly distributed in an inner ring with internal vertical plates (48) that cooperate with the external vertical plates (12).

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