A core sampling device for geological prospecting and exploration

Abstract

The present invention discloses a core sampling device for geological prospecting and exploration, which relates to the technical field of core sampling, including: a sampling tube, a fan-shaped groove is provided on the sampling tube along the length direction thereof, a plurality of rock powder collection boxes are arranged in the fan-shaped groove; a rock powder collection mechanism is movably arranged on the upper side of each of the rock powder collection boxes in the fan-shaped groove, and each of the rock powder collection mechanisms is used to scrape the inner wall of the core hole section to collect rock powder. When sampling, the present invention places the sampling tube in the hole section for core drilling sampling, and then uses the rock powder collection mechanism to collect rock powder from the inner wall of the core hole section, and the collected rock powder automatically falls into the rock powder collection box located below the rock powder collection mechanism for collection, thereby achieving one-time completion of the simultaneous rock powder collection of different areas inside the core hole section, which is convenient to use.

Description

Technical Field

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

[0002] As is known to all, core sampling, also known as core drilling sampling, is a sampling work carried out on the core or ore core obtained by drilling. It is generally done manually or mechanically, according to a certain sampling length, the core is split into two halves or four parts along the long axis, and then half or one quarter of it is taken as a sample. The premise for determining the quality of core sampling is the core sampling rate. If the geological conditions make the core sampling rate unable to meet the sampling requirements, or if the mineral composition is not uniform and causes selective wear, so that the useful minerals in the core are enriched or depleted, it is necessary to collect rock powder from the same hole section while performing core sampling, so as to use the analysis results of the two to determine the ore crystal position at that location. The present application provides a core sampling device for geological prospecting and exploration, which is used to collect rock powder from the hole section of core drilling sampling.

[0003] For example, the authorization announcement number is CN215004362U, the authorization announcement date is 2021.12.03, and the name is a core sampling device that is easy to use for geological prospecting and exploration. Its specific structure includes a base, one end of the base is penetrated by a threaded fixing rod, and the threaded fixing rod is sleeved with a gasket. A fixing block is fixedly installed on the lower surface of the base, and the lower surface of the fixing block is fixedly connected to a first support rod. A rotating bolt is provided on one side of the outer shell of the first support rod, one end of the rotating bolt is fixedly connected to a rotating shaft, and the other end of the rotating shaft is fixedly connected to the rotating rod, and the surface of the rotating rod A fixing groove is sleeved, a first limit block is fixedly connected to one side of the outer surface of the rotating rod, a support leg is fixedly connected to the surface of the rotating rod, a stop block is arranged inside the outer shell of the first support rod, a conical block is fixedly connected to the bottom of the outer shell of the first support rod, a connecting rod is fixedly connected to the lower surface of the base, and a roller is arranged at the lower end of the connecting rod.... For another example, the authorization announcement number is CN210571467U, and the name is a core sampling device for geological prospecting and exploration; for another example, the authorization announcement number is CN214538610U, and the name is a core sampling device for geological prospecting and exploration.

[0004] As in the above application, the core sampling devices used in geological prospecting and exploration in the prior art are all core drilling sampling, that is, taking out columnar core samples. However, as explained above, in actual use, when the geological conditions make the core sampling rate unable to meet the sampling requirements, it is necessary to collect rock powder in the same hole section while carrying out core sampling, so as to use the analysis results of both to determine the ore crystal position at that location. However, the prior art lacks automatic rock powder sampling measures inside the hole section, and manual operation is required by the staff, which makes sampling inconvenient. For this reason, the present application provides a core sampling device for geological prospecting and exploration for collecting and sampling rock powder in the hole section of core drilling sampling. Summary of the invention

[0005] The purpose of the present invention is to provide a core sampling device for geological prospecting and exploration to solve the above-mentioned shortcomings in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a core sampling device for geological prospecting and exploration, comprising: a sampling tube, a fan-shaped groove is opened on the sampling tube along its length direction, and a plurality of rock powder collection boxes are arranged in the fan-shaped groove; a rock powder collection mechanism is movably arranged on the upper side of each rock powder collection box in the fan-shaped groove, and each rock powder collection mechanism is used to scrape the inner wall of the core hole section to collect rock powder.

[0007] As a further description of the above technical solution: the rock powder collection mechanism has two working states: a first working state: the rock powder collection mechanism is retracted to the inner area of ​​the fan-shaped groove; a second working state: the rock powder collection mechanism protrudes to the outer area of ​​the fan-shaped groove.

[0008] As a further description of the above technical solution: the rock powder collection mechanism includes a side frame, the bottom end of the side frame is rotatably connected in the fan-shaped groove through an articulated frame, and the top end of the side frame is rotatably provided with a collection hob.

[0009] As a further description of the above technical solution: a gear is rotatably provided at the tail end of the side frame, and the gear is rotatably connected to the collecting hobbing gear via a transmission belt.

[0010] As a further description of the above technical solution: a composite adjustment component is arranged in the sampling tube, and the composite adjustment component includes a first driving member and a second driving member, the second driving member is used to synchronously drive each of the rock powder collection mechanisms to switch between a first working state and a second working state, and the first driving member is used to synchronously drive the collection rolling teeth on each of the rock powder collection mechanisms to rotate and collect rock powder.

[0011] As a further description of the above technical solution: the second driving member is a sleeve, which is movably embedded in the sampling tube, and an adjustment opening is provided on the fan-shaped groove at a position relative to each of the rock powder collection mechanisms. An adjustment connecting rod is rotatably connected to the sleeve, and the adjustment connecting rod passes through the adjustment opening and is rotatably connected to the side frame.

[0012] As a further description of the above technical solution: the first driving member is a gear rod, the gear rod is movably embedded in the sampling tube, and the gear rod is evenly distributed with tooth grooves, and the tooth grooves are meshed with the gear through an adjustment opening.

[0013] As a further description of the above technical solution: a driving unit is arranged at the top of the sampling tube, and the driving unit is respectively connected to the gear rod and the sleeve seat for transmission, and the driving unit is used to synchronously drive the gear rod to reciprocate and lift and adjust and the sleeve seat to move downward with steady pressure.

[0014] As a further description of the above technical solution: a plurality of collection box storage cavities are opened on the fan-shaped groove along its length direction, and each of the rock powder collection boxes is rotatably arranged in the collection box storage cavity.

[0015] As a further description of the above technical solution: an adjustment mechanism is also provided in the sampling tube, the adjustment mechanism is transmission-connected with each of the rock powder collection boxes, and the adjustment mechanism is used to synchronously drive each of the rock powder collection boxes to rotate and adjust.

[0016] In the above technical scheme, a core sampling device for geological prospecting and exploration provided by the present invention places a sampling tube in the core drilling sampling hole section during sampling, and then uses a rock powder collection mechanism to collect rock powder from the inner wall of the core hole section. The collected rock powder automatically falls into a rock powder collection box located below the rock powder collection mechanism for collection, thereby achieving one-time completion of simultaneous rock powder collection of different areas inside the core hole section, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure of a core sampling device for geological prospecting and exploration provided by an embodiment of the present invention;

[0019] Figure 2 A side view of a core sampling device for geological prospecting and exploration provided by an embodiment of the present invention;

[0020] Figure 3A schematic diagram of the structure of a sampling tube provided in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the assembly structure of a rock dust collection mechanism provided by an embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the structure of a rock dust collection mechanism provided by an embodiment of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a rock dust collection box provided in an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of the structure of a composite regulating component provided in an embodiment of the present invention;

[0025] Figure 8 A schematic diagram of the structure of an adjustment shaft provided in an embodiment of the present invention;

[0026] Fig. 9 A schematic diagram of the structure of a drive unit provided by an embodiment of the present invention;

[0027] Fig.10 A schematic diagram of the internal structure of a drive unit provided in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Sampling tube; 10. Fan-shaped groove; 11. Collection box storage chamber; 12. Adjustment opening; 2. Rock powder collection box; 21. Box body; 22. Annular seat; 23. Engaging groove; 24. Strip air bag; 25. Elastic air bag; 3. Rock powder collection mechanism; 31. Side frame; 32. Collection hobbing gear; 33. Gear; 34. Transmission belt; 35. Adjustment connecting rod; 4. Adjustment shaft; 41. Annular convex tooth; 5. Composite adjustment component; 51. Gear rod; 511. Tooth groove; 52. Sleeve; 6. Drive unit; 61. Install side frame; 62. First piston tube; 621. First adjustment piston; 622. Light rod; 623. One-way air inlet valve; 63. Second piston tube; 631. Second adjustment piston; 632. Pressure relief valve; 633. Adjustment rod; 64. Drive motor; 641. Drive disk; 642. Drive connecting rod. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] See also Figure 1-10The embodiment of the present invention provides a technical solution: a core sampling device for geological prospecting and exploration, comprising: a sampling tube 1, a fan-shaped groove 10 is opened on the sampling tube 1 along its length direction, and a plurality of rock powder collecting boxes 2 are arranged in the fan-shaped groove 10; a rock powder collecting mechanism 3 is movably arranged on the upper side of each rock powder collecting box 2 in the fan-shaped groove 10, and each rock powder collecting mechanism 3 is used to scrape the inner wall of the core hole section to collect rock powder.

[0032] The present embodiment provides a core sampling device for geological prospecting and exploration. Specifically, it is used to collect rock powder from the hole section of the core drilling sampling when the geological conditions make the core sampling rate unable to meet the sampling requirements, so as to determine the ore crystal position at the location by using the analysis results of the two. The sampling tube 1 is a cylindrical tubular structure, and the sampling tube 1 is provided with a fan-shaped groove 10 along its length, wherein the fan-shaped groove 10 is a strip groove structure with a fan-shaped cross section, and a plurality of rock powder collection boxes 2 are arranged at equal distances in the fan-shaped groove 10. Optionally, the opening of the rock powder collection box 2 is upward for collecting the collected rock powder. A rock powder collecting mechanism 3 is provided on the upper side of each rock powder collecting box 2 in the fan-shaped groove 10. Optionally, the rock powder collecting mechanism 3 includes an electric motor, which is fixed in the fan-shaped groove 10, and a collecting roller is connected to the output end of the electric motor, that is, when collecting, the sampling tube 1 is built into the hole section of the core drilling sampling, and then the rock powder collecting mechanism 3 is used to collect rock powder from the inner wall of the core hole section, and the collected rock powder automatically falls into the rock powder collecting box 2 located below the rock powder collecting mechanism 3 for collection, thereby realizing the one-time completion of synchronous rock powder collection of different areas inside the core hole section, which is easy to use.

[0033] In another embodiment provided by the present invention, the rock powder collection mechanism 3 has two working states: a first working state: the rock powder collection mechanism 3 is retracted to the inner area of ​​the fan-shaped groove 10; a second working state: the rock powder collection mechanism 3 protrudes to the outer area of ​​the fan-shaped groove 10. The rock powder collection mechanism 3 includes a side frame 31, the bottom end of the side frame 31 is rotatably connected to the fan-shaped groove 10 via a hinged frame, and a collection gear hob 32 is rotatably provided at the top end of the side frame 31. A gear 33 is rotatably provided at the tail end of the side frame 31, and the gear 33 and the collection gear hob 32 are rotatably connected via a transmission belt 34. Specifically, the rock powder collection mechanism 3 is rotatably provided in the fan-shaped groove 10 along the length direction of the fan-shaped groove 10, that is, the side frame 31 is rotatably connected to the fan-shaped groove 10 via a hinged frame.

[0034] When the angle between the side frame 31 and the sampling tube 1 is less than 45° after being rotated and adjusted by the articulated frame, the collection rolling gear 32 rotatably arranged at the top of the side frame 31 is built into the inner area of ​​the fan-shaped groove 10 on the sampling tube 1, that is, the rock powder collection mechanism 3 is in the first working state at this time, that is, the collection rolling gear 32 will not contact the inner wall of the core hole section, so that when the sampling tube 1 is taken out from below and the sampling tube 1 is taken out, the rock powder collection mechanism 3 is adjusted to be in the first working state, preventing the collection rolling gear 32 from contacting the inner wall of the core hole section, thereby affecting the sampling accuracy.

[0035] When the angle between the side frame 31 and the sampling tube 1 is greater than 45° after being rotated and adjusted by the articulated frame, the collection rolling gear 32 rotatably arranged at the top of the side frame 31 protrudes to the outer area of ​​the fan-shaped groove 10 on the sampling tube 1, that is, the rock powder collection mechanism 3 is in the second working state at this time, that is, the collection rolling gear 32 contacts the inner wall of the core hole section to collect rock powder. Further, when the angle between the side frame 31 and the sampling tube 1 is rotated and adjusted from 45° to 90°, the collection rolling gear 32 rotatably arranged at the top of the side frame 31 will continue to protrude to the outer area of ​​the fan-shaped groove 10 on the sampling tube 1, thereby meeting the dynamic adjustment demand for collecting rock powder and preventing the fixed rock powder collection mechanism 3 from having a gap with the collection rolling gear 32 on the rock powder collection mechanism 3 when the inner wall of the core hole section is worn during rock powder collection, so that continuous rock powder collection cannot be achieved.

[0036] In another embodiment provided by the present invention, a composite adjustment component 5 is provided in the sampling tube 1, and the composite adjustment component 5 includes a first driving member and a second driving member, the second driving member is used to synchronously drive each rock powder collection mechanism 3 to switch between a first working state and a second working state, and the first driving member is used to synchronously drive the collection rolling gear 32 on each rock powder collection mechanism 3 to rotate and collect rock powder.

[0037] The second driving member is a sleeve 52, which is movably embedded in the sampling tube 1. An adjustment opening 12 is provided on the fan-shaped groove 10 at a position relative to each rock powder collection mechanism 3. An adjustment connecting rod 35 is rotatably connected to the sleeve 52. The adjustment connecting rod 35 passes through the adjustment opening 12 and is rotatably connected to the side frame 31.

[0038] The first driving member is a gear rod 51 , which is movably embedded in the sampling tube 1 , and has tooth grooves 511 evenly distributed on the gear rod 51 , which mesh with the gear 33 through the adjustment opening 12 .

[0039] Specifically, a through hole is opened at the center position of the sampling tube 1, and the sleeve 52 is slidably embedded in the through hole. The sleeve 52 is a vertical rod with a U-shaped end face. An adjusting link 35 is rotatably connected to the sleeve 52 on one side relative to the fan-shaped groove 10. The adjusting link 35 penetrates the adjusting opening 12 and is rotatably connected to the side frame 31. When the sleeve 52 moves up, the side frame 31 is driven to rotate and deflect upward by the adjusting link 35, so that the collection rolling gear 32 at the top of the side frame 31 is built into the inner area of ​​the fan-shaped groove 10 on the sampling tube 1. When the sleeve 52 moves down, the side frame 31 is driven to rotate and deflect downward by the adjusting link 35, so that the collection rolling gear 32 at the top of the side frame 31 protrudes from the outer area of ​​the fan-shaped groove 10 on the sampling tube 1, that is, the collection rolling gear 32 contacts the inner wall of the core hole section to collect rock powder.

[0040] The gear rod 51 is movably embedded in the sampling tube 1, that is, the gear rod 51 is movably embedded in the cavity formed between the sleeve 52 and the through hole opened at the center position of the sampling tube 1. The lifting and lowering adjustment of the gear rod 51 and the sleeve 52 are independent of each other and do not interfere with each other. When the gear rod 51 is lifted and lowered, the tooth groove 511 thereon meshes with the gear 33 to drive the gear 33 to rotate. The rotation of the gear 33 drives the collection hobbing gear 32 at the top of the side frame 31 to rotate through the transmission belt 34, so that the inner wall of the core hole section is collected by the rotation of the collection hobbing gear 32, and the collected rock powder is collected by the rock powder collection box 2.

[0041] By setting the first driving member and the second driving member, it is possible to synchronously drive multiple rock powder collecting mechanisms 3 to rotate and adjust, thereby realizing switching between the first working state and the second tooling state, without the need to adjust one by one, and it is more convenient to use. At the same time, by setting the second driving member, it is possible to synchronously drive the collecting rollers 32 on multiple rock powder collecting mechanisms 3 to rotate and collect rock powder, without the need to configure multiple independent driving mechanisms for driving, and it is easy to use, thereby realizing synchronous completion of adjustment and rock powder collection, thereby improving work efficiency.

[0042] In another embodiment provided by the present invention, a driving unit 6 is provided at the top of the sampling tube 1, and the driving unit 6 is respectively connected to the gear rod 51 and the sleeve 52 for transmission. The driving unit 6 is used to synchronously drive the gear rod 51 to reciprocate and adjust the lifting and lowering and the sleeve 52 to move downward with stable pressure. The stable downward movement is that the sleeve 52 moves downward stably at a preset pressure state, that is, the sleeve 52 keeps stably driving the rock powder collection mechanism 3 to rotate and deflect, so that the collection rolling teeth 32 on the rock powder collection mechanism 3 contact the inner wall of the core hole section.

[0043] Specifically, the driving unit 6 includes an installation side frame 61, which is fixed at the top of the sampling tube 1. The side of the installation side frame 61 is fixed with a first piston tube 62 and a second piston tube 63 through a clamp frame. A first adjusting piston 621 is arranged on the inner side of the first piston tube 62. The bottom of the first adjusting piston 621 is connected with a light rod 622. The light rod 622 passes through the first piston tube 62 and is connected to the top of the gear rod 51. A one-way air intake valve 623 is arranged on one side of the bottom of the first piston tube 62. The other side of the bottom of the first piston tube 62 is connected to the top of the second piston tube 63 through an air guide pipe. A pressure relief valve 632 is arranged on the top of the second piston tube 63. A second adjusting piston 631 is slidingly arranged inside the second piston tube 63. The bottom of the second adjusting piston 631 is connected with an adjusting rod 633. The adjusting rod 633 passes through the second piston tube 63 and is connected to the sleeve 52.

[0044] A driving motor 64 is installed on the top of the side frame 61, and a driving disk 641 is rotatably connected to the output shaft of the driving motor 64. A driving connecting rod 642 is eccentrically rotatably connected to the driving disk 641. The bottom end of the driving connecting rod 642 is rotatably connected to the top of the first regulating piston 621 through a hinge seat.

[0045] The driving motor 64 drives the driving disk 641 to rotate, and the driving disk 641 cooperates with the driving connecting rod 642 on it to drive the first adjusting piston 621 to reciprocate and rise and fall a certain distance. The first adjusting piston 621 reciprocates and rises and falls to cooperate with the light rod 622 to drive the gear rod 51 to rise and fall. When the gear rod 51 is raised and lowered, the tooth groove 511 thereon meshes with the gear 33 to drive the gear 33 to rotate. The rotation of the gear 33 drives the collection hobbing gear 32 at the top of the side frame 31 to rotate through the transmission belt 34, so that the inner wall of the core hole section is collected by the rotation of the collection hobbing gear 32. At the same time, when the first adjusting piston 621 rises and falls on the inner side of the first piston tube 62, it cooperates with the one-way air intake valve 623 to absorb external air and inject it into the second piston tube 63 through the air guide pipe, thereby increasing the air pressure in the second piston tube 63. Under the action of the air pressure, the second piston The second regulating piston 631 in the tube 63 moves downward, thereby driving the sleeve 52 to move downward through the second regulating piston 631 and the regulating rod 633. When the sleeve 52 moves downward, the side frame 31 is driven to rotate and deflect downward through the adjusting connecting rod 35, so that the collection rolling gear 32 at the top of the side frame 31 protrudes out of the outer area of ​​the fan-shaped groove 10 on the sampling tube 1, that is, the collection rolling gear 32 contacts the inner wall of the core hole section to collect rock powder. Optionally, the pressure relief valve 632 includes a center hole at the top of the second piston tube 63, and a sealing plug is movably inserted in the center hole. The sealing plug is located in the inner area of ​​the second piston tube 63 and is provided with a supporting spring. When the pressure in the second piston tube 63 is too large, the supporting spring is automatically squeezed to drive the sealing plug to move upward, thereby realizing automatic deflation. Furthermore, a reset spring is provided on the regulating rod 633, and the elastic force of the reset spring is used to drive the driver to move upward and reset. The gear rod 51 is synchronously driven to reciprocately lift and lower and the sleeve 52 is driven downward at a stable pressure by a single driving unit 6. The gear rod 51 is raised and lowered to synchronously drive the collection rollers 32 on multiple rock powder collection mechanisms 3 to rotate and collect rock powder. The sleeve 52 is moved downward at a stable pressure to synchronously drive multiple rock powder collection mechanisms 3 to rotate and adjust, and the first working state and the second tooling state are switched, so that the collection rollers 32 on the rock powder collection mechanisms 3 are dynamically adjusted to contact with the inner wall of the core hole section at a stable pressure.

[0046] In another embodiment provided by the present invention, a plurality of collection box storage cavities 11 are provided on the fan-shaped groove 10 along the length direction thereof, and each rock powder collection box 2 is rotatably disposed in the collection box storage cavity 11 .

[0047] For details, see Figure 3 as well as Figure 6A collection box storage cavity 11 is provided on the fan-shaped groove 10, and the rock powder collection box 2 includes a box body 21 with a fan-shaped structure. An annular seat 22 is integrally formed at the center of the box body 21. The box body 21 is rotatably arranged in the collection box storage cavity 11 through the annular seat 22, that is, the annular seat 22 is rotatably sleeved on the sleeve seat 52, and the box body 21 with a fan-shaped structure is adapted to the fan-shaped groove 10, and the circumferential side of the annular seat 22 is provided with an engaging groove 23 at equal angles in an annular shape. An adjusting mechanism is also provided in the sampling tube 1, and the adjusting mechanism is transmission-connected to each rock powder collection box 2, and the adjusting mechanism is used to synchronously drive each rock powder collection box 2 to rotate and adjust. Specifically, the adjustment mechanism is an adjustment shaft rod 4, which is rotatably arranged in the sampling tube 1, and an annular convex tooth 41 is arranged on the circumferential side of the adjustment shaft rod 4 and at the corresponding position of each rock powder collection box 2, and the annular convex tooth 41 is meshed with the meshing groove 23 on the circumferential side of the annular seat 22. When in use, the adjustment shaft rod 4 is rotated and adjusted, and the annular seat 22 is driven to rotate by the annular convex tooth 41 on the outer side of the adjustment shaft rod 4 cooperating with the meshing groove 23, and the box body 21 is driven to rotate and adjust by the annular seat 22, so that the box body 21 is located in the collection box storage cavity 11 on the sampling tube 1 or in the fan-shaped groove 10 on the sampling tube 1, that is, after the sampling tube 1 is placed or the sampling is completed, the box bodies 21 on multiple rock powder collection boxes 2 are synchronously driven by the adjustment shaft rod 4 to rotate and adjust and be built into the collection box storage cavity 11 on the sampling tube 1, thereby realizing the storage and protection of the box body 21 on the rock powder collection box 2, and mixing occurs when placing and taking out the sampling tube 1, which affects the accuracy of sampling.

[0048] In another embodiment provided by the present invention, an abutment plate is provided in the collection box storage chamber 11. When the box body 21 rotates to the fan-shaped groove 10 on the sampling tube 1, a side wall of the box body 21 abuts against the abutment plate, and an elastic airbag 25 is provided on one side wall of the box body 21. An arc-shaped groove is provided on the side of the box body 21, and a strip airbag 24 is provided in the arc-shaped groove. The strip airbag 24 is connected to the elastic airbag 25. That is, when the box body 21 rotates to the fan-shaped groove 10 on the sampling tube 1, the side wall of the box body 21 abuts against the abutment plate. An elastic airbag 25 is provided on one side wall of the box body 21. An arc-shaped groove is provided on the side of the box body 21. A strip airbag 24 is provided in the arc-shaped groove. The strip airbag 24 is connected to the elastic airbag 25. When the box body 21 is in the groove 10, one side wall of the box body 21 abuts against the abutment plate, and the elastic airbag 25 is squeezed at this time. The gas inside the elastic airbag 25 is injected into the strip airbag 24, and the strip airbag 24 abuts against the inner wall of the core hole segment, thereby sealing the gap between the box body 21 and the inner wall of the core hole segment, preventing the rock powder collection mechanism 3 located on the upper side from falling into the box body 21 at the adjacent bottom when collecting rock powder and causing mixing, thereby further improving the accuracy of the collected rock powder samples.

[0049] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A core sampling device for geological prospecting and exploration, characterized in that: The sampling tube (1) comprises: a sampling tube (1), wherein a fan-shaped groove (10) is provided on the sampling tube (1) along its length direction, and a plurality of rock powder collection boxes (2) are arranged in the fan-shaped groove (10); A rock powder collecting mechanism (3) is movably arranged on the upper side of each rock powder collecting box (2) in the fan-shaped groove (10), and each rock powder collecting mechanism (3) is used to scrape the inner wall of the core hole section to collect rock powder; the rock powder collecting mechanism (3) has two working states: a first working state: the rock powder collecting mechanism (3) is retracted to the inner area of ​​the fan-shaped groove (10); a second working state: the rock powder collecting mechanism (3) is protruded to the outer area of ​​the fan-shaped groove (10); The rock powder collection mechanism (3) comprises a side frame (31), the bottom end of the side frame (31) is rotatably connected to the fan-shaped groove (10) through an articulated frame, the top end of the side frame (31) is rotatably provided with a collection rolling gear (32), the tail end of the side frame (31) is rotatably provided with a gear (33), and the gear (33) and the collection rolling gear (32) are rotatably connected through a transmission belt (34), and a composite adjustment component (5) is provided in the sampling tube (1), and the composite adjustment component (5) comprises a first driving member and a second driving member, the second driving member is used to synchronously drive each of the rock powder collection mechanisms (3) to switch between a first working state and a second working state, and the first driving member is used to synchronously drive each of the rock powder collection mechanisms (3) to switch between a first working state and a second working state. The collecting hob (32) on the rock powder collecting mechanism (3) rotates to collect rock powder, the second driving member is a sleeve (52), the sleeve (52) is movably embedded in the sampling tube (1), an adjustment opening (12) is provided on the fan-shaped groove (10) at a position relative to each of the rock powder collecting mechanisms (3), an adjustment connecting rod (35) is rotatably connected to the sleeve (52), the adjustment connecting rod (35) passes through the adjustment opening (12) and is rotatably connected to the side frame (31), the first driving member is a gear rod (51), the gear rod (51) is movably embedded in the sampling tube (1), and the gear rod (51) is evenly distributed with tooth grooves (511), and the tooth grooves (511) are meshed with the gear (33) through the adjustment opening (12); A driving unit (6) is provided at the top end of the sampling tube (1), and the driving unit (6) is respectively connected to the gear rod (51) and the sleeve (52) in a transmission manner, and the driving unit (6) is used to synchronously drive the gear rod (51) to reciprocate and lift and adjust and the sleeve (52) to move downward at a stable pressure; The driving unit includes an installation side frame, which is fixed to the top of the sampling tube. The side of the installation side frame is fixed with a first piston tube and a second piston tube through a clamp frame. A first adjusting piston is arranged on the inner side of the first piston tube. A light rod is connected to the bottom of the first adjusting piston. The light rod passes through the first piston tube and is connected to the top of the gear rod. A one-way air intake valve is arranged on one side of the bottom of the first piston tube. The other side of the bottom of the first piston tube is connected to the top of the second piston tube through an air guide pipe. A pressure relief valve is arranged on the top of the second piston tube. A second adjusting piston is slidingly arranged inside the second piston tube. An adjusting rod is connected to the bottom of the second adjusting piston. The adjusting rod passes through the second piston tube and is connected to a sleeve. A driving motor is arranged on the top of the installation side frame. A driving disk is rotatably connected to the output shaft of the driving motor. A driving connecting rod is eccentrically rotatably connected to the driving disk. The bottom end of the driving connecting rod is rotatably connected to the top of the first adjusting piston through a hinge seat.

2. A core sampling device for geological prospecting and exploration according to claim 1, characterized in that: The fan-shaped groove (10) is provided with a plurality of collection box storage cavities (11) along its length direction, and each of the rock powder collection boxes (2) is rotatably arranged in the collection box storage cavity (11).

3. A core sampling device for geological prospecting and exploration according to claim 2, characterized in that: The sampling tube (1) is also provided with an adjustment mechanism, the adjustment mechanism being transmission-connected to each of the rock powder collection boxes (2), and the adjustment mechanism being used to synchronously drive each of the rock powder collection boxes (2) to rotate and adjust.

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