A sampling device for mine rock mass survey

Abstract

The present invention relates to the technical field of rock and soil sampling devices, and specifically to a sampling device for rock mass exploration in mines, comprising an outer pipe joint, an outer pipe, a drilling bit and an inner pipe, wherein the inner pipe and the lower end of the outer pipe joint are movably connected; an end of the inner pipe away from the outer pipe joint is threadedly connected to a retaining spring seat, a conical retaining spring groove is provided inside the retaining spring seat, and a sampling retaining spring is movably installed inside the conical retaining spring groove; an end of the retaining spring seat away from the inner pipe is provided with a plurality of cutting grooves distributed along the axial direction of the retaining spring seat; a cutting ring is rotatably connected to the retaining spring seat, and a plurality of arc-shaped cutting knives with one end rotatably connected to the cutting ring are provided inside the cutting ring; the problem that the existing sampling device is not convenient for cutting the rock core connected to the rock mass, making it difficult to take out the rock core during sampling is effectively solved; the present invention is easy to use, can effectively improve the sampling efficiency, and facilitates the removal of the rock core sample by cutting the rock core and the rock mass.

Description

Technical Field

[0001] The invention relates to the technical field of rock and soil sampling devices, and in particular to a sampling device for mining rock mass exploration. Background Art

[0002] In key areas such as mine rock surveying, geological exploration, and mineral resource assessment, core sampling is a core technical means of obtaining the physical and mechanical parameters of underground rock masses and accurately analyzing geological structures. Its importance is self-evident. Current mainstream core sampling devices, such as single-action double-barrel drill bits and rope coring drill bits, primarily rely on hollow drill rods for core drilling operations.

[0003] However, in actual operation, the existing core sampling device uses a sampling tube to collect cores, but has shortcomings in the key link of cutting off the core connected to the rock mass;

[0004] Because existing devices lack an efficient and convenient cutting mechanism, core truncation is extremely difficult, making core extraction an extremely challenging process. Currently, most existing devices use a pull-and-pull core-breaking method to separate the core. This method involves applying axial tension to the core after drilling is completed, using the drill rig's pull-and-pull system to attempt to break the core at a weak point.

[0005] However, this method is extremely inefficient in core cutting and extraction. Each core cut often requires multiple, complex operations such as lifting the drill and hammering the drill bit. Especially in deep-hole operations, a single cut is extremely time-consuming, seriously impacting work progress. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the existing technology, the present invention provides a sampling device for mine rock survey, which effectively solves the problem that the existing sampling device is not convenient for cutting the core connected to the rock body, making it difficult to remove the core during sampling.

[0007] The technical solution provided by the present invention is:

[0008] A sampling device for mining rock mass exploration, comprising an outer pipe joint, an outer pipe having one end threadedly connected to the outer pipe joint, a drilling bit having one end threadedly connected to the outer pipe, and an inner pipe located inside the outer pipe;

[0009] The inner tube and the lower end of the outer tube joint are movably connected;

[0010] One end of the inner tube away from the outer tube joint is threadedly connected to a circlip seat, a conical circlip groove is provided inside the circlip seat, and a sampling circlip is movably installed inside the conical circlip groove;

[0011] The end of the circlip seat away from the inner tube is provided with a plurality of cutting grooves distributed along the axial direction of the circlip seat;

[0012] A cutting ring is rotatably connected to the retaining spring seat, and a plurality of arc-shaped cutting knives are arranged inside the cutting ring, one end of which is rotatably connected to the cutting ring;

[0013] The cutting ring rotates to make the arc-shaped cutting knife contact the side wall of the cutting groove, and then pushes the movable end of the arc-shaped cutting knife to swing to a position close to the axis of the retaining spring seat;

[0014] The cutting ring is driven to rotate by a driving structure.

[0015] Preferably, the swing end of the arc-shaped cutting knife is fixedly provided with an arc-shaped cutting blade, and the cross-section of the cutting blade is set to be an isosceles triangle.

[0016] Preferably, the driving structure comprises a driving ring fixedly connected to the inside of the drilling bit, and a plurality of guide plates for driving the cutting ring to rotate are fixedly connected to the inside of the driving ring;

[0017] A plurality of guide shafts matching the guide plates are fixedly connected to the outer side of the cutting ring;

[0018] The lower end of the outer tube joint is rotatably connected to a rotating rod, the rotating rod and the inner tube are slidably connected, and an elastic member is provided between the rotating rod and the inner tube, the elastic member is used to push the inner tube to slide in a direction close to the outer tube joint;

[0019] A one-way bearing is installed between the outer pipe joint and the rotating rod;

[0020] The retaining spring seat is provided with a reset structure for pushing the cutting ring to reset.

[0021] Preferably, the reset structure includes a reset ring slidably connected to the outer side wall of the retaining spring seat, the reset ring is fixedly connected to a plurality of reset plates distributed along the axial direction of the reset ring, and the reset plates are fixedly connected to a plurality of reset shafts;

[0022] The cutting ring is provided with a plurality of reset grooves for driving the cutting ring to rotate, the reset shaft is slidably connected to the inside of the reset grooves, and the reset grooves are arranged obliquely;

[0023] A reset spring is sleeved between the cutting ring and the reset ring.

[0024] Preferably, a limit plate is fixedly connected to the retaining spring seat via bolts, a retaining ring is fixedly connected to one end of the limit plate, and a limit groove is provided inside the reset ring and is slidably connected to the limit plate.

[0025] Preferably, a force tube is sleeved on the inner tube for pushing the reset ring to move closer to the cutting ring, and the force tube slides axially along the inner tube;

[0026] A compression spring is sleeved between the booster tube and the inner tube;

[0027] The upper end of the inner tube is provided with a plurality of support springs for supporting the booster tube;

[0028] A control mechanism for controlling the sliding of the boost tube is provided on the inner side of the outer tube.

[0029] Preferably, the control mechanism comprises at least one conical control groove provided on the side wall of the booster tube, wherein a ball is movably provided inside the conical control groove;

[0030] The side wall of the inner tube is provided with a force receiving groove for receiving the ball and a reset receiving groove located below the force receiving groove;

[0031] A control ring for pushing the balls to slide inside the control groove is fixedly mounted on the inner wall of the outer tube.

[0032] Preferably, a force block is fixedly connected to the lower end of the force tube.

[0033] Preferably, the sampling retaining spring is a non-closed conical structure.

[0034] Preferably, one end of the sampling clamp is configured as a V-shaped slot, and the other end is configured as a V-shaped plate that matches the slot.

[0035] The beneficial effects of the present invention are:

[0036] The present invention solves the problem that the sampling device is inconvenient for cutting the core connected to the rock mass, making it difficult to remove the core during sampling, by adding an outer pipe joint, an outer pipe, a drilling drill bit, an inner pipe, a retaining spring seat, a conical retaining spring groove, a sampling retaining spring, a cutting groove, a cutting ring and an arc-shaped cutting knife. The cutting ring is rotated to push the arc-shaped cutting knife toward the inner pipe, thereby squeezing the arc-shaped cutting knife into the core of the inner pipe, thereby pinching and cutting the core, thereby achieving the purpose of cutting the core connected to the rock mass.

[0037] By adding a driving ring, a guide plate, a guide shaft, a rotating rod and a one-way bearing, the rotation of the driving ring is controlled by the relative sliding of the outer tube and the inner tube;

[0038] By adding a reset ring, a reset plate, a reset shaft, a reset groove and a reset spring, the problem of the inconvenience of retracting the arc-shaped cutting knife during sampling, which makes it inconvenient to sample the core, is solved;

[0039] By adding a booster tube, a compression spring and a control mechanism, when the outer tube and the inner tube slide relative to each other, the compression spring pushes the booster tube to hit the reset ring, thereby providing impact force to enable the arc-shaped cutting knife to cut the core.

[0040] The present invention is easy to use, can effectively improve sampling efficiency, and facilitates taking out core samples by cutting the core and the rock body. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 It is a schematic cross-sectional view of the present invention;

[0044] Figure 3 This invention Figure 2 A partial enlarged schematic diagram in the middle;

[0045] Figure 4 This invention Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0046] Figure 5 is a schematic cross-sectional view of a drilling bit of the present invention;

[0047] Figure 6 Is a schematic diagram of the explosion of the present invention;

[0048] Figure 7 Is a schematic diagram of the drive ring of the present invention;

[0049] Figure 8 This is a schematic diagram of the arc-shaped cutting knife in use;

[0050] Figure 9 This is a schematic diagram of the installation position of the reset ring of the present invention;

[0051] Figure 10 This is a schematic cross-sectional view of the afterburner tube of the present invention;

[0052] Figure 11 This invention Figure 10 A partial enlarged schematic diagram of point C in the middle;

[0053] Figure 12 The present invention is a schematic cross-sectional view of the circlip seat;

[0054] Figure 13 This invention Figure 12 A partial enlarged schematic diagram of point D in the middle;

[0055] Figure 14 It is a schematic diagram of the sampling retaining spring of the present invention.

[0056] In the figure, 1. outer pipe joint; 2. outer pipe; 3. drilling bit; 4. inner pipe; 5. retaining ring seat; 6. conical retaining ring groove; 7. sampling retaining ring; 8. cutting groove; 9. cutting ring; 10. arc-shaped cutting knife; 11. cutting blade; 12. driving ring; 13. guide plate; 14. guide shaft; 15. rotating rod; 16. one-way bearing; 17. reset ring; 18. reset plate; 19. reset shaft; 20. reset groove; 21. reset spring; 22. limit plate; 23. retaining ring; 24. limit groove; 25. booster tube; 26. compression spring; 27. conical control groove; 28. ball; 29. booster accommodating groove; 30. reset accommodating groove; 31. control ring; 32. support spring; 33. booster block; 34. V-shaped plate. DETAILED DESCRIPTION

[0057] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0058] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in 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.

[0059] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present invention, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0060] It should also be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. The illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0061] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples. However, one skilled in the art will appreciate that the aspects described can be practiced without these specific details.

[0062] Example 1

[0063] Refer to the instruction manual Figure 1-14 A sampling device for mining rock mass exploration includes an outer pipe joint 1, an outer pipe 2 having one end threadedly connected to the outer pipe joint 1, a drilling bit 3 having one end threadedly connected to the outer pipe 2, and an inner pipe 4 located inside the outer pipe 2, the inner pipe 4 being movably connected to the lower end of the outer pipe joint 1;

[0064] The end of the inner tube 4 away from the outer tube joint 1 is threadedly connected to a circlip seat 5, a conical circlip groove 6 is formed inside the circlip seat 5, and a sampling circlip 7 is movably installed inside the conical circlip groove 6;

[0065] When in use, the drilling bit 3 is driven to rotate for sampling, and the drilled cylindrical core passes through the retaining spring seat 5 and the sampling retaining spring 7 and enters the inner tube 4. When the drilling bit 3 reaches a predetermined depth, the device is pulled upward, and the sampling retaining spring 7 is clamped on the outer edge of the core. The device is pulled upward, and the sampling retaining spring 7 slides downward inside the conical retaining spring groove 6. After being guided by the conical retaining spring groove 6, the sampling retaining spring 7 clamps the core.

[0066] The sampling retaining spring 7 is a non-closed conical structure, which is convenient for clamping the core. One end of the sampling retaining spring 7 is set to a V-shaped groove, and the other end is matched with the groove. A V-shaped plate 34 is provided, so that when the sampling retaining spring 7 slides inside the conical retaining spring groove 6, the V-shaped plate 34 guides one end of the V-shaped plate 34 to be clamped into the groove.

[0067] The end of the circlip seat 5 away from the inner tube 4 is provided with a plurality of cutting grooves 8 distributed along the axial direction of the circlip seat 5;

[0068] A cutting ring 9 is rotatably connected to the circlip seat 5, and a plurality of arc-shaped cutting knives 10 are arranged inside the cutting ring 9, one end of which is rotatably connected to the cutting ring 9;

[0069] The swing end of the arc-shaped cutting knife 10 is fixed with an arc-shaped cutting blade 11, and the cross section of the cutting blade 11 is set to an isosceles triangle. By adding the cutting blade 11, it is convenient to separate the core and the rock mass;

[0070] The cutting ring 9 rotates to make the arc-shaped cutting knife 10 contact the side wall of the cutting groove 8, and then pushes the movable end of the arc-shaped cutting knife 10 to swing to a position close to the axis of the retaining spring seat 5;

[0071] When in use, the cutting ring 9 is pushed to rotate, so that the swing end of the arc-shaped cutting knife 10 fits against the side wall of the cutting groove 8. After being guided by the cutting groove 8, the arc-shaped cutting knife 10 swings to a position close to the center of the retaining spring seat 5, thereby cutting off the core stuck inside the retaining spring seat 5, making it easier to take out the sampling core.

[0072] The cutting ring 9 is driven to rotate by a driving structure, which includes a driving ring 12 fixedly connected to the inside of the drilling bit 3, and a plurality of guide plates 13 for driving the cutting ring 9 to rotate are fixedly connected to the inside of the driving ring 12;

[0073] A plurality of guide shafts 14 cooperating with guide plates 13 are fixedly connected to the outside of the cutting ring 9. The guide plates 13 are tilted inside the driving ring 12 so that when the driving ring 12 slides in the direction close to the guide shafts 14, the guide plates 13 push the guide shafts 14 through their inclined surfaces, thereby driving the cutting ring 9 to rotate;

[0074] The lower end of the outer tube joint 1 is rotatably connected to a rotating rod 15, and the rotating rod 15 is slidably connected to the inner tube 4. A limiting groove is provided inside the inner tube 4. The end of the rotating rod 15 close to the inner tube 4 is fixedly connected to a limiting block. The limiting block is provided with a sliding block slidably connected to the limiting groove. An elastic member is provided between the rotating rod 15 and the inner tube 4. The elastic member is used to push the inner tube 4 to slide in a direction close to the outer tube joint 1. In this embodiment, the elastic member is a tension spring.

[0075] A one-way bearing 16 is installed between the outer pipe joint 1 and the rotating rod 15. Under the action of the one-way bearing 16, the rotating rod 15 rotates forward inside the outer pipe joint 1. When the rotating rod 15 rotates reversely inside the outer pipe joint 1, the rotating rod 15 and the outer pipe joint 1 are relatively fixed under the action of the one-way bearing 16, so that the rotating rod 15 cannot rotate reversely inside the outer pipe joint 1.

[0076] When the drilling bit 3 is working, the guide plate 13 is located below the guide shaft 14. At this time, when the drilling bit 3 is working, it drives the drive ring 12 and the guide plate 13 to rotate synchronously. At this time, the guide plate 13 and the guide shaft 14 do not interfere with each other.

[0077] After the drill bit 3 reaches the predetermined position, the device is pulled upward. At this time, the outer tube joint 1 and the outer tube 2 move upward, and the sampling retaining spring 7 slides downward inside the conical retaining spring groove 6. After being guided by the conical retaining spring groove 6, the sampling retaining spring 7 clamps the core. At this time, the outer tube joint 1 and the outer tube 2 move upward, and the retaining spring seat 5 is fixed at the current position, thereby driving the driving ring 12 to move upward through the drilling drill bit 3, so that the guide plate 13 and the guide shaft 14 contact each other, and after being guided by the guide plate 13, the cutting ring 9 is driven to rotate in the opposite direction through the guide plate 13 and the guide shaft 14, so that the swing end of the arc cutting knife 10 fits the side wall of the cutting groove 8, and after being guided by the cutting groove 8, the arc cutting knife 10 swings to a position close to the center of the retaining spring seat 5, thereby cutting off the core stuck in the retaining spring seat 5.

[0078] The retaining spring seat 5 is provided with a reset structure for pushing the material-breaking ring 9 to reset. The reset structure includes a reset ring 17 slidably connected to the outer wall of the retaining spring seat 5. The reset ring 17 is fixedly connected to a plurality of reset plates 18 distributed along the axial direction of the reset ring 17. The reset plates 18 are each fixedly connected to a plurality of reset shafts 19.

[0079] The cutting ring 9 is provided with a plurality of reset grooves 20 for driving the cutting ring 9 to rotate. The reset shaft 19 is slidably connected to the reset groove 20. The reset groove 20 is tilted.

[0080] A return spring 21 is provided between the cutting ring 9 and the return ring 17;

[0081] A limiting plate 22 is fixedly connected to the retaining spring seat 5 by bolts, and a retaining ring 23 is fixedly connected to one end of the limiting plate 22. A limiting groove 24 is provided inside the reset ring 17 and is slidably connected to the limiting plate 22. The bolt connection makes it easy to install and disassemble. In this way, the reset ring 17 is restricted so that the reset ring 17 can only slide axially along the retaining spring seat 5 on the retaining spring seat 5.

[0082] In the initial state, the guide plate 13 is located below the guide shaft 14, and the guide plate 13 is located below the guide shaft 14 without interfering. Under the action of the reset spring 21, the reset ring 17 is pushed to move away from the cutting ring 9. At this time, under the action of the reset groove 20 and the reset shaft 19, the cutting ring 9 is pushed to rotate forward. At this time, the arc-shaped cutting knife 10 is guided by the retaining spring seat 5 so that the arc-shaped cutting knife 10 is located inside the cutting ring 9, so that the arc-shaped cutting knife 10 does not affect the sampling of the core.

[0083] Example 2

[0084] The inner tube 4 is provided with a booster tube 25 for pushing the reset ring 17 to move closer to the cutting ring 9. The booster tube 25 slides axially along the inner tube 4. A slide groove is provided on the inner side of the booster tube 25. A slider that cooperates with the slide groove is detachably mounted on the outer wall of the inner tube 4 by bolts, so that the booster tube 25 can only slide axially along the inner tube 4.

[0085] A compression spring 26 is installed between the booster tube 25 and the inner tube 4;

[0086] The upper end of the inner tube 4 is provided with a plurality of support springs 32 for supporting the booster tube 25;

[0087] In the initial state, under the action of the compression spring 26, the force tube 25 is pulled toward the bottom of the inner tube 4. At the same time, the support spring 32 pushes the force tube 25 away from the bottom of the inner tube 4. As a result, when the force tube 25 is in the initial position, under the action of the support spring 32, the bottom of the force tube 25 and the upper end of the reset ring 17 are not in contact.

[0088] A control mechanism for controlling the sliding movement of the boosting tube 25 is provided on the inner side of the outer tube 2. The control mechanism includes at least one tapered control groove 27 formed in the side wall of the boosting tube 25. A ball 28 is movably disposed within the tapered control groove 27. The ball 28 can slide within the tapered control groove 27. In this embodiment, there are two tapered control grooves 27, and the two tapered control grooves 27 are symmetrically distributed along the axis of the boosting tube 25 to improve stability.

[0089] The side wall of the inner tube 4 is provided with a force receiving groove 29 for receiving the ball 28 and a reset receiving groove 30 located below the force receiving groove 29;

[0090] A control ring 31 is fixedly mounted on the inner wall of the outer tube 2 for pushing the balls 28 to slide inside the control groove.

[0091] In the specific implementation of this embodiment, in the initial state, the boosting tube 25 is pushed by the supporting spring 32 so that the bottom of the boosting tube 25 and the upper end of the reset ring 17 are not in contact;

[0092] After the drilling bit 3 reaches the predetermined position, the device is pulled upward, at this time the outer pipe joint 1 and the outer tube 2 move upward, the sampling retaining spring 7 slides downward inside the conical retaining spring groove 6, and after being guided by the conical retaining spring groove 6, the sampling retaining spring 7 clamps the core, at this time the outer pipe joint 1 and the outer tube 2 move upward, the retaining spring seat 5 is fixed in the current position, thereby driving the driving ring 12 to move upward through the drilling bit 3, so that the guide plate 13 and the guide shaft 14 are in contact, and after being guided by the guide plate 13, the cutting ring 9 is driven to rotate in the opposite direction through the guide plate 13 and the guide shaft 14, so that the swing end of the arc cutting knife 10 fits the side wall of the cutting groove 8, and after being guided by the cutting groove 8, the arc cutting knife 10 swings to a position close to the center of the retaining spring seat 5;

[0093] Initial state, at this time, one end of the ball 28 contacts the inner wall of the inner tube 4;

[0094] When the outer tube joint 1 and the outer tube 2 move upward, the control ring 31 first contacts the ball 28, and then the control ring 31 pushes the force tube 25 upward synchronously through the ball 28, thereby stretching the compression spring 26, until the force tube 25 slides upward until the ball 28 and the force receiving groove 29 are at the same height. Then, under the action of the control ring 31, the ball 28 is pushed into the force receiving groove 29, and then the ball 28 and the control ring 31 are out of contact.

[0095] At this time, under the action of the compression spring 26, the force tube 25 is pulled to slide in the direction close to the reset ring 17. After the top of the force tube 25 contacts the support spring 32, the force tube 25 compresses the support spring 32. Subsequently, the bottom of the force tube 25 hits the top of the reset ring 17, thereby providing instantaneous pressure, so that the reset ring 17 can push the cutting ring 9 to twist, thereby providing the arc-shaped cutting knife 10 with force to cut the sampling core.

[0096] Subsequently, under the action of the support spring 32, the force tube 25 is pushed upward a certain distance, so that the bottom of the force tube 25 and the upper end of the reset ring 17 are not in contact, so that the supporting force of the support spring 32 and the tension of the compression spring 26 are in a balanced state. At this time, the ball 28 is located above the reset receiving groove 30.

[0097] If the sampling core inside the inner tube 4 is not separated from the rock mass, the outer tube joint 1 and the outer tube 2 are pushed downward. When the outer tube joint 1 and the outer tube 2 move downward, the control ring 31 contacts the ball 28, and then the ball 28 is pushed by pushing the control ring 31, thereby driving the force tube 25 to slide downward. After the ball 28 and the reset receiving groove 30 are at the same height, the ball 28 is pushed into the reset receiving groove 30 by the action of the control ring 31, and then the ball 28 and the control ring 31 are separated. At this time, the force tube 25 is pushed upward for a certain distance under the supporting force of the support spring 32. At this time, the ball 28 moves upward, and the ball 28 slides out from the reset receiving groove 30, and the control ring 31 is located below the ball 28; this reciprocating operation makes it easy for the arc-shaped cutting knife 10 to cut the core.

[0098] The lower end of the force tube 25 is fixedly connected to a force block 33 to provide greater impact force.

[0099] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A sampling device for mining rock mass exploration, comprising an outer pipe joint, an outer pipe having one end threadedly connected to the outer pipe joint, a drilling bit having one end threadedly connected to the outer pipe, and an inner pipe located inside the outer pipe; It is characterized in that The inner tube and the lower end of the outer tube joint are movably connected; One end of the inner tube away from the outer tube joint is threadedly connected to a circlip seat, a conical circlip groove is provided inside the circlip seat, and a sampling circlip is movably installed inside the conical circlip groove; The end of the circlip seat away from the inner tube is provided with a plurality of cutting grooves distributed along the axial direction of the circlip seat; A cutting ring is rotatably connected to the retaining spring seat, and a plurality of arc-shaped cutting knives are arranged inside the cutting ring, one end of which is rotatably connected to the cutting ring; The cutting ring rotates to make the arc-shaped cutting knife contact the side wall of the cutting groove, and then pushes the movable end of the arc-shaped cutting knife to swing to a position close to the axis of the retaining spring seat; The cutting ring is driven to rotate by a driving structure; The driving structure includes a driving ring fixedly connected to the inside of the drilling bit, and a plurality of guide plates fixedly connected to the inside of the driving ring for driving the cutting ring to rotate; A plurality of guide shafts matching the guide plates are fixedly connected to the outer side of the cutting ring; The lower end of the outer tube joint is rotatably connected to a rotating rod, the rotating rod and the inner tube are slidably connected, and an elastic member is provided between the rotating rod and the inner tube, the elastic member is used to push the inner tube to slide in a direction close to the outer tube joint; A one-way bearing is installed between the outer pipe joint and the rotating rod; The retaining spring seat is provided with a reset structure for pushing the broken material ring to reset; The reset structure includes a reset ring slidably connected to the outer wall of the retaining spring seat, the reset ring is fixedly connected to a plurality of reset plates distributed along the axial direction of the reset ring, and the reset plates are each fixedly connected to a plurality of reset shafts; The cutting ring is provided with a plurality of reset grooves for driving the cutting ring to rotate, the reset shaft is slidably connected to the inside of the reset grooves, and the reset grooves are arranged obliquely; A reset spring is provided between the cutting ring and the reset ring; The inner tube is provided with a force tube for pushing the reset ring to move closer to the cutting ring, and the force tube slides axially along the inner tube; A compression spring is installed between the booster tube and the inner tube; The upper end of the inner tube is provided with a plurality of support springs for supporting the booster tube; A control mechanism for controlling the sliding of the boost tube is provided on the inner side of the outer tube.

2. A sampling device for mining rock mass exploration according to claim 1, characterized in that: The swing end of the arc-shaped cutting knife is fixedly provided with an arc-shaped cutting blade, and the cross section of the cutting blade is arranged to be an isosceles triangle.

3. The sampling device for mining rock mass exploration according to claim 1, characterized in that: The retaining spring seat is fixedly connected to a limit plate via bolts, one end of the limit plate is fixedly connected to a retaining ring, and a limit groove is provided inside the reset ring and is slidably connected to the limit plate.

4. A sampling device for mining rock mass exploration according to claim 1, characterized in that: The control mechanism includes at least one conical control groove provided on the side wall of the booster tube, wherein a ball is movably arranged inside the conical control groove; The side wall of the inner tube is provided with a force receiving groove for receiving the ball and a reset receiving groove located below the force receiving groove; A control ring for pushing the balls to slide inside the control groove is fixedly mounted on the inner wall of the outer tube.

5. The sampling device for mining rock mass exploration according to claim 1, characterized in that: The lower end of the boosting tube is fixedly connected with a boosting block.

6. The sampling device for mining rock mass exploration according to claim 1, characterized in that: The sampling clamping spring is a non-closed conical structure.

7. A sampling device for mining rock mass exploration according to claim 6, characterized in that: One end of the sampling clamping spring is arranged as a V-shaped slot, and the other end is a V-shaped plate matched with the slot.

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