Rock core in-situ coring device for mine exploration

Abstract

The invention relates to the technical field of rock core coring, in particular to an in-situ rock core coring device for mine exploration. Comprising a drilling machine, the drilling machine is provided with a rotation driving module, the rotation driving module is rotationally connected with an outer pipe, an inner pipe is slidably and rotationally connected into the outer pipe, and the inner pipe is slidably connected with two semicircular shells which are distributed in a mirror image mode and make contact with each other in a limited mode; the clamping assemblies are arranged in the two semicircular shells in a linear mode and used for clamping a rock core, each clamping assembly comprises a sliding shell which is connected into the two semicircular shells in a limiting and sliding mode, the sliding shell is connected with a plurality of connecting rods in a sealing and sliding mode, and the connecting rods are fixedly connected with arc-shaped plates. When the collected rock core is stored, the rock core is stored in a multi-point fixing mode, longitudinal extrusion force borne by the rock core is dispersed, shear force borne by the rock core is reduced, the possibility of rock core breakage is reduced, and the integrity of the rock core is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rock core extraction, and in particular to an in-situ rock core extraction device for mine exploration. Background Art

[0002] When conducting mine exploration, accurately assessing the location, size and grade of underground ore bodies is crucial to effective resource development. Core sampling, as a technical means to directly obtain underground rock samples, occupies a core position in modern mine exploration. The core obtained by coring can provide the most direct and representative distribution of underground rock formations, which makes the distribution of mine minerals clearer. Traditional coring devices usually include components such as a drill bit, an outer tube and an inner tube. During the drilling process, the rock is broken by rotating the drill bit, and the formed core is pushed into the inner tube for preservation. However, in actual operation, when the core enters the inner tube, it will face significant longitudinal pressure, which not only increases the shear force on the core, but also causes fragile or structurally unstable cores to break, thereby reducing the integrity of the core. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an in-situ coring device for mine exploration.

[0004] The technical solution of the present invention is: an in-situ coring device for mining exploration, comprising: A drilling rig, wherein the drilling rig is equipped with a rotary drive module, the rotary drive module is rotatably connected to an outer tube, the outer tube is slidably and rotatably connected to an inner tube, the inner tube is limitedly slidably connected to two semicircular shells that are mirror-distributed and contact each other, the inner tube is detachably equipped with a connecting piece, and the connecting piece is used to limit the two semicircular shells; The clamping assemblies arranged in a straight line are all arranged in the two semicircular shells for clamping the core, and the clamping assemblies include: A sliding shell is limitedly and slidably connected in the two semicircular shells, a damper is provided between the sliding shell and the semicircular shells, the sliding shell is sealingly and slidably connected to a plurality of connecting rods, and the connecting rods are fixedly connected to arc plates; A sliding ring is sealingly and slidingly connected in the sliding shell, and a tension spring is fixedly connected between the sliding ring and the sliding shell; A trigger assembly is arranged on all the sliding shells and is used to move adjacent arc-shaped plates.

[0005] Preferably, a plurality of elastic blocks are fixedly connected to one side of the arc-shaped plate close to the axis of the sliding shell, and the elastic blocks are inclined upward from a side close to an adjacent arc-shaped plate to a side away from an adjacent arc-shaped plate.

[0006] Preferably, the trigger component comprises: The connecting shells, the number of which is the same as the number of the sliding shells, are respectively fixed to the adjacent sliding rings, all the connecting shells and all the sliding shells are arranged alternately, and the uppermost side of all the connecting shells and all the sliding shells is the connecting shell; The number of rotating rings is consistent with the number of connecting shells, and they are respectively rotatably connected in adjacent connecting shells, and a first torsion spring is fixed between the two. The rotating rings are fixed with two pull ropes, and the pull ropes pass through the adjacent connecting shells on the side away from the adjacent rotating ring connection part and are located on the outside of the adjacent connecting shells. The sliding shell is fixed to the two pull ropes of the adjacent connecting shell on the lower side.

[0007] Preferably, the trigger component further includes: The rotating module is installed on the lower side of the connecting member, and the output shaft of the rotating module is fixedly connected to the two pull ropes in the uppermost connecting shell.

[0008] Preferably, it also includes: Two elastic telescopic plates are respectively fixed in the two semicircular shells, the telescopic portion of the elastic telescopic plate is used to limit the connecting shell, the telescopic portion of the elastic telescopic plate is provided with an inclined surface, the inclined surface of the elastic telescopic portion of the elastic telescopic plate and the connecting shell are pressed against each other, the inclined surface of the elastic telescopic portion of the elastic telescopic plate and the sliding shell are pressed against each other, the connecting shell is slidably connected to two sliding blocks, the pull rope is used to press the adjacent sliding blocks, the sliding blocks are provided with an inclined surface, the sliding blocks and the inclined surface of the elastic telescopic portion of the elastic telescopic plate adjacent to the inclined surface are pressed against each other; A limiting ring is slidingly connected in the two semicircular shells, a first spring is arranged between the limiting ring and the lower part of the inner side of one of the semicircular shells, the limiting ring is located between the lowermost sliding shell and the two semicircular shells, and the limiting ring is used to push the sliding shell to move.

[0009] Preferably, it also includes: The number of the limiting rods is the same as the number of the connecting shells, and they are respectively slidably and rotatably connected to the adjacent connecting shells. A second torsion spring is fixedly connected between the limiting rods and the adjacent connecting shells. The rotating ring is provided with circumferentially distributed limiting grooves, and the limiting grooves of the rotating ring are used to limit the adjacent limiting rods; The number of the limit columns is consistent with the number of the connecting shells, and they are respectively slidably connected to the adjacent connecting shells. Damping is arranged between the limit columns and the connecting shells. A limit slide is arranged on the limit column. The limit rod is fixedly connected with a limit pin. The limit pin of the limit rod slides in a limited manner in the limit slide of the adjacent limit column. The connecting shell is fixedly connected with a blocking column, and the blocking column is used to limit the movement of the limit rod.

[0010] Preferably, it also includes: A first fixed shell is fixedly connected to the side wall of the inner tube, a first sliding rod is sealingly and slidably connected inside the first fixed shell, and a second spring is fixedly connected between the first and second sliding rods; A limit block is fixedly connected to the first sliding rod, the limit block is used to push the limit column to move, the limit block is provided with an inclined surface, and the inclined surface of the limit block is used to guide the limit column.

[0011] Preferably, it also includes: The second fixed shell is fixed to the lower side of the inner tube side wall, the second fixed shell is sealingly and slidably connected to a second sliding rod, a side of the second sliding rod outside the second fixed shell is provided with an inclined surface, and an oil guide pipe is connected between the second fixed shell and the first fixed shell.

[0012] Preferably, it also includes: a third fixed shell, fixedly connected to the side wall of the inner tube, wherein the oil guide pipe between the second fixed shell and the first fixed shell is divided into two sections by the third fixed shell and respectively communicated with two sides of the third fixed shell, and the third fixed shell is sealingly and slidably connected with a first sliding plate and a second sliding plate, wherein the second sliding plate is located on one side of the third fixed shell close to the communicating portion between the upper oil guide pipe and the second fixed shell; a third sliding plate, sealingly and slidingly connected to the second fixed shell, the third sliding plate being located between the second sliding rod and the communicating portion between the second fixed shell and the upper oil guide pipe, and a third spring being fixedly connected between the third sliding plate and the second sliding rod; The locking assembly is disposed in the third fixed shell and is used to control the movement of the first sliding plate and the second sliding plate.

[0013] Preferably, the locking assembly comprises: A first elastic telescopic rod is fixedly connected to the second sliding plate, a telescopic end of the first elastic telescopic rod is fixedly connected to the first sliding plate, a limiting hole is arranged at the telescopic end of the first elastic telescopic rod, a second elastic telescopic rod is fixedly connected to the inner circumference of the third fixed shell, the telescopic end of the second elastic telescopic rod is used to limit the limiting hole of the telescopic end of the first elastic telescopic rod, a limiting protrusion is fixedly connected to the telescopic end of the second elastic telescopic rod, and the fixing part of the first elastic telescopic rod is used to squeeze the limiting protrusion of the telescopic end of the second elastic telescopic rod.

[0014] The beneficial effect is that the present invention preserves the collected rock cores by fixing the rock cores at multiple points, thereby dispersing the longitudinal squeezing force on the rock cores, reducing the shear force on the rock cores, reducing the possibility of the rock cores breaking, and improving the integrity of the rock cores.

[0015] Through the cooperation of the limiting ring and the elastic expansion plate, after the core is clamped, the elastic block is pressed again to improve the stability and effectiveness of clamping various parts of the core and ensure that the gravity of the core can be evenly dispersed.

[0016] By detecting the continuity of the core when it enters the inner tube, when encountering a fault, the core that has entered the semicircular shell continues to move upward to ensure that the core that enters the semicircular shell after the fault ends does not contact the core that initially enters the semicircular shell, thereby protecting the original state at the fault. After the fault ends, the core that enters the semicircular shell is clamped immediately to protect the core that enters the semicircular shell subsequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the inner tube and the connecting piece of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the inner tube and the semicircular shell of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating module and the limiting ring of the present invention; Figure 5 It is an exploded view of the inner tube and the semicircular shell of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the elastic telescopic plate and the second fixed shell of the present invention; Figure 7 An exploded view of the sliding shell and the connecting shell of the present invention; Figure 8 An exploded view of the internal parts of the connecting shell of the present invention; Fig. 9 is a cross-sectional view of the second fixed shell and the third fixed shell of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the limiting rod and the limiting column of the present invention; Fig.11 An exploded view of the limit rod and the limit block of the present invention; Fig.12 is a cross-sectional view of the first fixed shell and the third fixed shell of the present invention; Fig.13 The exploded view of the first elastic telescopic rod and the second elastic telescopic rod of the present invention.

[0018] In the figure: 1-drilling rig, 101-rotation drive module, 102-outer tube, 2-inner tube, 201-connecting piece, 3-semicircular shell, 4-sliding shell, 6-connecting rod, 7-arc plate, 8-elastic block, 9-sliding ring, 10-connecting shell, 1001-sliding block, 11-rotating ring, 12-pull rope, 13-rotating module, 14-elastic telescopic plate, 15-limiting ring, 16-limiting rod, 17-limiting column, 1701-blocking column, 18-first fixed shell, 19-first sliding rod, 20-limiting block, 21-second fixed shell, 22-second sliding rod, 24-third fixed shell, 25-first sliding plate, 26-second sliding plate, 27-first elastic telescopic rod, 28-second elastic telescopic rod, 29-third sliding plate. DETAILED DESCRIPTION

[0019] The technical solution is further described below in conjunction with specific embodiments. It should be noted that the words indicating directions such as up, down, left, and right mentioned in this document are only for the positions of the structures shown in the corresponding drawings. The serial numbers assigned to the components in this document, such as first, second, etc., are only used to distinguish the objects described and do not have any order or technical meaning.

[0020] Example 1: A core in-situ coring device for mining exploration, see Figure 1-Figure 4 and Figure 6-Figure 8 , including: a drilling rig 1, the drilling rig 1 is equipped with a rotating drive module 101, the rotating drive module 101 is rotatably connected to an outer tube 102, the outer tube 102 is slidably and rotatably connected to an inner tube 2, the inner tube 2 is limitedly slidably connected to two semicircular shells 3 distributed in a mirror image and contacting each other, the inner tube 2 is detachably installed with a connecting piece 201, the connecting piece 201 is used to limit the two semicircular shells 3; the clamping components arranged in a straight line are all arranged in the two semicircular shells 3, for clamping the core, the clamping components include: a sliding shell 4, limitedly slidably connected in the two semicircular shells 3, a damping is arranged between the sliding shell 4 and the semicircular shell 3, the sliding shell 4 is sealed and slidably connected to a plurality of connecting rods 6, and the connecting rods 6 are fixedly connected to an arc plate 7; a sliding ring 9, sealed and slidably connected in the sliding shell 4, a tension spring is fixedly connected between the sliding ring 9 and the sliding shell 4; a trigger component is arranged on all sliding shells 4, for moving adjacent arc plates 7.

[0021] In the above scheme, the problem of the longitudinal extrusion force gradually increasing when the core enters the inner tube 2 is solved; a rotating drill bit is installed on the lower side of the outer tube 102, and the two semicircular shells 3 contact each other to form a complete cylindrical shell. The lower side of the connecting member 201 supports the semicircular shell 3, and the upper side of the connecting member 201 is connected to the salvage assembly. The sliding shell 4 is a circular shell. The damping between the sliding shell 4 and the semicircular shell 3 is used to delay the movement of the sliding shell 4. The connecting rod 6 and the arc plate 7 are used to clamp the core. The number of clamping components is based on The adjustment is changed according to the length of the collected core. The longer the length of the collected core, the more clamping components are needed. Hydraulic oil is injected between the sliding ring 9 and the sliding shell 4. The connecting rod 6 is located in the hydraulic oil in the sliding shell 4. The tension spring between the sliding ring 9 and the sliding shell 4 is used to drive the sliding ring 9 to reset. The hydraulic oil in the sliding shell 4 is squeezed by the sliding ring 9, thereby pushing the connecting rod 6 out. When the connecting rod 6 drives the arc plate 7 to clamp the core, the force applied by all the arc plates 7 to the core is the same, so that the clamping force of the arc plate 7 on the core is uniform and stable.

[0022] See also Figure 6-Figure 8 A plurality of elastic blocks 8 are fixedly connected to one side of the arc plate 7 close to the axis of the sliding shell 4 , and the elastic blocks 8 are inclined upward from the side close to the adjacent arc plate 7 to the side away from the adjacent arc plate 7 .

[0023] In the above scheme, the elastic block 8 is used to clamp the rock core to reduce the impact on the rock core. The inclined elastic block 8 will deform upward when in contact with the rock core, thereby applying an oblique upward force to the rock core while clamping the rock core. When the rock core moves downward due to its own gravity, the oblique upward elastic block 8 and the rock core squeeze each other, further increasing the oblique upward supporting force of the elastic block 8 on the rock core, thereby improving the stability of the elastic block 8 clamping the rock core.

[0024] See also Figure 4-Figure 8 The trigger assembly includes: connecting shells 10, the number of which is consistent with the number of sliding shells 4, which are respectively fixed to adjacent sliding rings 9, all connecting shells 10 and all sliding shells 4 are arranged alternately, and the uppermost side of all connecting shells 10 and all sliding shells 4 is the connecting shell 10; rotating rings 11, the number of which is consistent with the number of connecting shells 10, which are respectively rotatably connected in adjacent connecting shells 10, and a first torsion spring is fixedly connected therebetween, the rotating ring 11 is fixedly connected to two pull ropes 12, the pull rope 12 passes through the adjacent connecting shell 10 away from the side of the connecting portion of the pull rope 12 with the adjacent rotating ring 11 and is located on the outside of the adjacent connecting shell 10, and the sliding shell 4 is fixedly connected to the two pull ropes 12 of the adjacent connecting shell 10 on the lower side.

[0025] In the above scheme, the winding directions of the two pull ropes 12 of the rotating ring 11 are the same. When the two pull ropes 12 are pulled, the rotating ring 11 rotates. After the pull ropes 12 are completely pulled down, the rotating ring 11 stops rotating. At this time, pulling the pull ropes 12 can drive the connecting shell 10 to move through the rotating ring 11. The length of the pull ropes 12 can be adjusted according to the situation to change the distance between multiple fixed points of the core.

[0026] See also Figure 4 and Figure 5 The trigger assembly further includes: a rotating module 13 installed at the lower side of the connecting member 201 , and an output shaft of the rotating module 13 is fixedly connected to the two pull ropes 12 in the uppermost connecting shell 10 .

[0027] In the above scheme, the output shaft of the rotating module 13 can be installed with a rope winding wheel, which is fixedly connected to the pull rope 12 in the connecting shell 10 through the rope winding wheel to reel in the pull rope 12. The rotating module 13 is located at the uppermost side of the two semicircular shells 3, and the pull rope 12 fixedly connected to the output shaft of the rotating module 13 passes through the interior of the two semicircular shells 3.

[0028] See also Figure 5-Figure 8 , also includes: two elastic telescopic plates 14, which are respectively fixed in the two semicircular shells 3, the telescopic part of the elastic telescopic plate 14 is used to limit the connecting shell 10, the telescopic part of the elastic telescopic plate 14 is provided with an inclined surface, the inclined surface of the telescopic part of the elastic telescopic plate 14 and the connecting shell 10 are squeezed against each other, the inclined surface of the telescopic part of the elastic telescopic plate 14 and the sliding shell 4 are squeezed against each other, the connecting shell 10 is slidably connected to two sliding blocks 1001, the pull rope 12 is used to squeeze adjacent sliding blocks 1001, the sliding blocks 1001 are provided with inclined surfaces, the inclined surfaces of the sliding blocks 1001 and the inclined surfaces of the telescopic parts of the adjacent elastic telescopic plates 14 are squeezed against each other; a limiting ring 15, which is slidingly connected in the two semicircular shells 3 in a limited position, a first spring is provided between the limiting ring 15 and the lower part of the inner side of one of the semicircular shells 3, the limiting ring 15 is located between the lowermost sliding shell 4 and the two semicircular shells 3, and the limiting ring 15 is used to push the sliding shell 4 to move.

[0029] In the above scheme, the inclined surface of the uppermost sliding block 1001 in the initial state contacts the inclined surface of the telescopic portion of the elastic telescopic plate 14, and the sliding block 1001 moves toward the axis of the connecting shell 10 under the action of the inclined surface of the telescopic portion of the elastic telescopic plate 14, so that the pull rope 12 is bent when it passes through the sliding block 1001 and is rolled up. When the pull rope 12 is straightened, the pull rope 12 drives the sliding block 1001 to move away from the axis of the connecting shell 10, and causes the sliding block 1001 to squeeze the telescopic portion of the elastic telescopic plate 14, thereby causing the telescopic portion of the elastic telescopic plate 14 to contract. When the sliding ring 9 moves and is located at the extreme sliding position of the sliding shell 4, the distance between the connecting shell 10 and the sliding shell 4 is smaller than the thickness of the telescopic portion of the elastic telescopic plate 14, so that the telescopic end of the elastic telescopic plate 14 cannot enter between the connecting shell 10 and the sliding shell 4. In the initial state, the plane of the telescopic portion of the elastic telescopic plate 14 limits the connecting shell 10, and the first spring of the limiting ring 15 is initially in a stored force state. After the uppermost sliding shell 4 and the connecting shell 10 are moved away, the first spring of the limiting ring 15 drives the limiting ring 15 to move upward to push the lower sliding shell 4 and the connecting shell 10 upward.

[0030] When the device is used for coring, the outer tube 102 is first drilled normally to the set depth through the rotating drive module 101, and then the drilling of the outer tube 102 is temporarily stopped and the pre-assembled inner tube 2 is sent into the outer tube 102 through the salvage assembly. After the inner tube 2 is sent to the specified position, the outer tube 102 is controlled to continue drilling, and the inner tube 2 moves synchronously and rotates relative to the outer tube 102. The inner tube 2 does not rotate. During the drilling of the outer tube 102, the core gradually enters between the two semicircular shells 3 through the opening on the lower side of the inner tube 2. During this process, the rotating module 13 rotates synchronously to reel in the pull rope 12 in the uppermost connecting shell 10. During the reeling process of the pull rope 12, the pull rope 12 drives the rotating ring 11 to rotate, and the first torsion spring of the rotating ring 11 accumulates force. After the core enters between the two semicircular shells 3, the core continues to move upward through the middle of the limit ring 15 and enters the middle of the sliding shell 4 and the connecting shell 10.

[0031] After the core enters the middle of the uppermost sliding shell 4 and the connecting shell 10, the pull rope 12 in the uppermost connecting shell 10 is completely moved out. Thereafter, when the pull rope 12 is rolled up, the pull rope 12 generates a pulling force on the rotating ring 11. The pulling force on the rotating ring 11 acts on the connecting shell 10, but the connecting shell 10 is limited by the telescopic part of the elastic telescopic plate 14, so that the connecting shell 10 does not move directly upward, so that under the rolling action of the rotating module 13 on the pull rope 12, the pull rope 12 gradually straightens and drives the sliding block 1001 to move in a direction away from the axis of the connecting shell 10, and the sliding block 1001 squeezes the elastic telescopic plate 14. The telescopic part of the plate 14, the telescopic part of the elastic telescopic plate 14 is retracted, so that the plane of the telescopic part of the elastic telescopic plate 14 releases the limit on the connecting shell 10, and then the connecting shell 10 moves upward and contacts with the inclined surface of the telescopic part of the elastic telescopic plate 14. In the process of the connecting shell 10 moving upward, the connecting shell 10 continues to squeeze the inclined surface of the telescopic part of the elastic telescopic plate 14. At the same time, the connecting shell 10 drives the adjacent sliding ring 9 to move upward. At this time, the damping between the semicircular shell 3 and the sliding shell 4 prevents the sliding shell 4 from moving directly upward, and the sliding ring 9 slides relative to the sliding shell 4, and the tension spring of the sliding ring 9 accumulates force.

[0032] When the sliding ring 9 and the sliding shell 4 slide relative to each other, the sliding ring 9 squeezes the hydraulic oil in the sliding shell 4, and the connecting rod 6 is pushed out by the hydraulic oil in the sliding shell 4, so that the connecting rod 6 drives the arc plate 7 and the elastic block 8 thereon to move toward the direction of the rock core in the middle of the sliding shell 4, and the rock core is clamped by the elastic block 8. When the elastic block 8 clamps the rock core, the elastic block 8 deforms toward the direction of the adjacent arc plate 7, so that the elastic block 8 generates an upward force when clamping the rock core, thereby improving the stability of its clamping of the rock core.

[0033] After the elastic block 8 clamps the core, the sliding ring 9 cannot move upward any further, so that the connecting shell 10 can drive the sliding shell 4 to move upward through the sliding ring 9, and the sliding shell 4 overcomes the damping between it and the semicircular shell 3. Thereafter, the connecting shell 10, the sliding ring 9 and the sliding shell 4 move upward synchronously. During this process, the elastic force of the first spring on the limit ring 15 is released, and the limit ring 15 is driven to move upward. The connecting shell 10 squeezes the telescopic part of the elastic telescopic plate 14 to the limit, so that the telescopic part of the elastic telescopic plate 14 and the side of the connecting shell 10 are in contact. Relative sliding, then after the connecting shell 10 is out of contact with the telescopic part of the elastic telescopic plate 14, the telescopic part of the elastic telescopic plate 14 extends outward under the action of its own elastic force, so that the sliding shell 4 contacts the inclined surface of the telescopic part of the elastic telescopic plate 14, and then under the mutual extrusion of the inclined surface of the telescopic part of the elastic telescopic plate 14 and the sliding shell 4, the sliding shell 4 generates a force to move downward, and the sliding ring 9 and the sliding shell 4 slide relative to each other, so that the hydraulic oil in the sliding shell 4 is squeezed again, thereby increasing the clamping force of the arc plate 7 and the elastic block 8 thereon on the rock core.

[0034] After the sliding shell 4 contacts the inclined surface of the telescopic part of the elastic telescopic plate 14, the inclined surface of the telescopic part of the elastic telescopic plate 14 slides relative to the sliding shell 4, so that the telescopic part of the elastic telescopic plate 14 is squeezed by the sliding shell 4. After the telescopic part of the elastic telescopic plate 14 is fully retracted, the telescopic part of the elastic telescopic plate 14 slides relative to the side of the sliding shell 4. Then, in the process of the sliding shell 4 moving upward, the sliding shell 4 and the telescopic part of the elastic telescopic plate 14 gradually lose contact. Then, the rotating module 13 drives the uppermost connecting shell 10 and the sliding shell 4 to move upward synchronously with the core. The core is clamped by the arc plate 7 and the elastic block 8, and the shear force between the cores entering the two semicircular shells 3 is dispersed, thereby reducing the risk of the core breaking due to continuous upward push from the lower side.

[0035] After the sliding shell 4 is out of contact with the telescopic part of the elastic telescopic plate 14, the telescopic part of the elastic telescopic plate 14 extends and resets under the action of its own elasticity. In the above process, the limit ring 15 continues to move upward and pushes all the sliding shells 4 and the connecting shell 10 on its upper side to move upward. However, due to the damping of the semicircular shell 3 on the sliding shell 4, the movement speed of the limit ring 15 is reduced, so that after the uppermost sliding shell 4 is out of contact with the telescopic part of the elastic telescopic plate 14, the subsequent sliding shell 4 and connecting shell 10 moving upward will not immediately contact the telescopic part of the elastic telescopic plate 14, but after the telescopic part of the elastic telescopic plate 14 is reset, the subsequent connecting shell 10 moving upward can contact the telescopic part of the elastic telescopic plate 14 and be limited by the telescopic part of the elastic telescopic plate 14, and at the same time, the sliding block 1001 on the subsequent upward connecting shell 10 is squeezed by the inclined surface of the telescopic part of the elastic telescopic plate 14, so that the sliding block 1001 moves in the direction close to the axis of the connecting shell 10.

[0036] After the subsequent upwardly moving connecting shell 10 and the telescopic part of the elastic telescopic plate 14 are limited, the limiting ring 15 stops moving, and then the uppermost sliding shell 4 moving upward together with the core pulls the pull rope 12 on its lower side (the action here is consistent with the action of the pull rope 12 on the rotating ring 11 being wound up), and the rotating module 13 continues to wind up the pull rope 12 on its adjacent connecting shell 10 until the pull rope 12 on the rotating ring 11 in the subsequent upwardly moving connecting shell 10 is completely wound up, and the pull rope 12 drives the subsequent connecting shell 10 and the sliding shell 4 to move upward (the action here is consistent with the action of the pull rope 12 driving the uppermost connecting shell 10 and the sliding shell 4 to move upward When the connecting shell 10 and the sliding shell 4 move upward, the connecting shell 10 is blocked by the telescopic part of the elastic telescopic plate 14, and the pull rope 12 squeezes the telescopic part of the elastic telescopic plate 14 to shrink. The pull rope 12 will apply a downward pulling force to the previous sliding shell 4 again, so that the hydraulic oil in the previous sliding shell 4 is squeezed again. When the subsequent arc plate 7 and the elastic block 8 clamp the rock core, the previous arc plate 7 and the elastic block 8 are pressed again, thereby improving the strength of the arc plate 7 and the elastic block 8 on each sliding shell 4 to clamp the rock core, and ensuring the stability and effectiveness of the arc plates 7 and the elastic blocks 8 on the adjacent sliding shells 4 to clamp the rock core.

[0037] In the process of the core continuously entering the two semicircular shells 3, the above-mentioned actions are continuously repeated, so that the arc plates 7 and elastic blocks 8 on the multiple sliding shells 4 clamp the core in sections, reducing the shear force between the cores. After completing the collection of the core, the rotary drive module 101 is turned off to stop the drilling of the outer tube 102, and the inner tube 2 is taken out through the salvage assembly. Then, the connecting piece 201 is removed, and the semicircular shell 3 is taken out from the inner tube 2 to obtain the core. After the core is taken out from the semicircular shell 3, the tension of the tension spring of the sliding ring 9 is released, driving the sliding ring 9 to reset, and the elastic force of the first torsion spring of the rotating ring 11 is released, driving the rotating ring 11 to rotate, and the rotating ring 11 rotates to rewind the pull rope 12 thereon. Thereafter, when the device needs to be used, it can be assembled again.

[0038] Example 2: Based on Example 1, please refer to Figure 9-11, and also includes: limit rods 16, the number of which is consistent with the number of connecting shells 10, which are respectively slidably and rotatably connected to adjacent connecting shells 10, a second torsion spring is fixedly connected between the limit rods 16 and the adjacent connecting shells 10, and a circumferentially distributed limit groove is provided on the rotating ring 11, and the limit groove of the rotating ring 11 is used to limit the adjacent limit rods 16; limit columns 17, the number of which is consistent with the number of connecting shells 10, which are respectively slidably connected to adjacent connecting shells 10, a damping is provided between the limit column 17 and the connecting shell 10, a limit slideway is provided on the limit column 17, a limit pin is fixedly connected to the limit rod 16, and the limit pin of the limit rod 16 slides in the limit slideway of the adjacent limit column 17, and a blocking column 1701 is fixedly connected to the connecting shell 10, and the blocking column 1701 is used to limit the movement of the limit rod 16.

[0039] In the above scheme, the second torsion spring on the limit rod 16 is initially in a torsion storage and stretched state, and a hemispherical surface is provided on the limit rod 16, so that the limit rod 16 can smoothly enter the limit groove of the rotating ring 11, and the limit slide of the limit column 17 is initially in a limit state with the limit pin of the limit rod 16, and the blocking column 1701 is initially in a limit state with the limit rod 16. When the limit column 17 slides into the connecting shell 10, the limit slide of the limit column 17 releases the limit on the limit pin of the limit rod 16, and the limit rod 16 rotates first under the torsion force of the second torsion spring thereon, so that the blocking column 1701 releases the limit on the limit rod 16, and then the limit rod 16 slides into the connecting shell 10 under the tension of the second torsion spring thereon, and enters the limit groove of the rotating ring 11, and the damping between the limit column 17 and the connecting shell 10 is used to ensure that the limit column 17 can remain stable when it is not squeezed.

[0040] See also Figure 6 and Figure 9-12 , and also includes: a first fixed shell 18, fixedly connected to the side wall of the inner tube 2, a first sliding rod 19 is sealingly and slidably connected in the first fixed shell 18, and a second spring is fixedly connected between the two; a limit block 20, fixedly connected to the first sliding rod 19, the limit block 20 is used to push the limit column 17 to move, the limit block 20 is provided with an inclined surface, and the inclined surface of the limit block 20 is used to guide the limit column 17.

[0041] In the above scheme, hydraulic oil is filled in the first fixed shell 18, and the second spring of the first sliding rod 19 is used to drive the first sliding rod 19 to reset. When the limit block 20 pushes the limit column 17 to move to the right, the limit slide of the limit column 17 gradually releases the limit on the limit pin of the limit rod 16. At this time, the limit pin of the limit rod 16 is limited by the limit block 20. When the limit block 20 moves to the left, the limit block 20 releases the limit on the limit pin of the limit rod 16, and then the limit rod 16 can move under the action of the second torsion spring thereon. In the initial state, the limit block 20 pushes the uppermost limit column 17, and the limit column 17 releases the limit on the limit pin of the limit rod 16. At the same time, the limit block 20 replaces the limit column 17 to limit the limit pin of the limit rod 16.

[0042] See also Figure 6 and Fig. 9 , and also includes: a second fixed shell 21, fixed to the lower side of the side wall of the inner tube 2, the second fixed shell 21 is sealed and slidably connected to a second sliding rod 22, the second sliding rod 22 is located on one side outside the second fixed shell 21 and is provided with an inclined surface, and an oil guide pipe is connected between the second fixed shell 21 and the first fixed shell 18.

[0043] In the above scheme, hydraulic oil is filled in the second fixed shell 21, and hydraulic oil is filled in the oil guide pipe between the second fixed shell 21 and the first fixed shell 18. When the core enters the inner tube 2, the inclined surface of the second sliding rod 22 is squeezed by the core, causing the second sliding rod 22 to move into the second fixed shell 21.

[0044] See also Figure 6 , Fig. 9 and Fig.12 , further comprising: a third fixed shell 24, fixedly connected to the side wall of the inner tube 2, the oil guide pipe between the second fixed shell 21 and the first fixed shell 18 is divided into two sections by the third fixed shell 24, and respectively communicated with the two sides of the third fixed shell 24, the third fixed shell 24 is sealingly and slidably connected with a first sliding plate 25 and a second sliding plate 26, the second sliding plate 26 is located on one side of the third fixed shell 24 close to the communicating portion between the upper oil guide pipe and the second fixed shell 21; a third sliding plate 29, sealingly and slidably connected to the second fixed shell 21, the third sliding plate 29 is located between the second sliding rod 22 and the communicating portion between the second fixed shell 21 and the upper oil guide pipe, and a third spring is fixedly connected between the third sliding plate 29 and the second sliding rod 22; a locking assembly, arranged in the third fixed shell 24, for controlling the movement of the first sliding plate 25 and the second sliding plate 26.

[0045] In the above scheme, hydraulic oil is filled in the third fixed shell 24, and the oil guide pipe between the second fixed shell 21 and the first fixed shell 18 is divided into two sections by the third fixed shell 24. Subsequently, the oil guide pipe between the second fixed shell 21 and the third fixed shell 24 is named No. 1 oil guide pipe, and the oil guide pipe between the first fixed shell 18 and the third fixed shell 24 is named No. 2 oil guide pipe. Hydraulic oil is filled between the first sliding plate 25 and the upper side of the third fixed shell 24, and hydraulic oil is filled between the second sliding plate 26 and the lower side of the third fixed shell 24. The cross-sectional area of ​​the No. 1 oil guide pipe between the second fixed shell 21 and the third fixed shell 24 is smaller than the cross-sectional area of ​​the third sliding plate 29. When the second sliding rod 22 moves into the second fixed shell 21, the hydraulic oil in the second fixed shell 21 cannot be pushed out in time by the third sliding plate 29, thereby compressing the third spring of the third sliding plate 29.

[0046] See also Fig. 9 , Fig.12 and Fig.13 The locking assembly includes: a first elastic telescopic rod 27, which is fixedly connected to the second sliding plate 26, the telescopic end of the first elastic telescopic rod 27 is fixedly connected to the first sliding plate 25, the telescopic end of the first elastic telescopic rod 27 is provided with a limiting hole, the inner circumference of the third fixed shell 24 is fixedly connected to the second elastic telescopic rod 28, the telescopic end of the second elastic telescopic rod 28 is used to limit the limiting hole of the telescopic end of the first elastic telescopic rod 27, the telescopic end of the second elastic telescopic rod 28 is fixedly connected to the limiting protrusion, and the fixed part of the first elastic telescopic rod 27 is used to squeeze the limiting protrusion of the telescopic end of the second elastic telescopic rod 28.

[0047] In the above scheme, the elastic coefficient of the second elastic telescopic rod 28 is greater than the elastic coefficient of the second spring of the first sliding rod 19, and the elastic coefficient of the second elastic telescopic rod 28 is less than the elastic coefficient of the third spring of the third sliding plate 29. The telescopic end of the second elastic telescopic rod 28 is provided with a hemispherical surface, which is used to enable the telescopic end of the second elastic telescopic rod 28 to smoothly enter the limiting hole of the telescopic end of the first elastic telescopic rod 27. The cross-section of the limiting protrusion at the telescopic end of the second elastic telescopic rod 28 is a triangle.

[0048] When the core enters the inner tube 2, the core squeezes the inclined surface of the second sliding rod 22, causing the second sliding rod 22 to slide to the left. Then the core continues to move upward, and the second sliding rod 22 moves to compress the third spring thereon. Then the elastic force of the third spring on the second sliding rod 22 is gradually released and pushes the third sliding plate 29 to move slowly to the left.

[0049] During the movement of the third sliding plate 29, the hydraulic oil entering the third fixed shell 24 pushes the second sliding plate 26 upward, and the first elastic telescopic rod 27 is compressed. When the fixed part of the first elastic telescopic rod 27 contacts the limiting protrusion of the telescopic end of the second elastic telescopic rod 28, the first elastic telescopic rod 27 squeezes the limiting protrusion of the telescopic end of the second elastic telescopic rod 28, causing the telescopic end of the second elastic telescopic rod 28 to shrink, thereby releasing the limiting hole of the telescopic end of the second elastic telescopic rod 28 from the limiting hole of the telescopic end of the first elastic telescopic rod 27. Subsequently, the telescopic end of the first elastic telescopic rod 27 is released under the action of its own elastic force and pushes the first sliding plate 25 to move upward. In this process, the telescopic end of the first elastic telescopic rod 27 and the telescopic end of the second elastic telescopic rod 28 slide relative to each other, and the first sliding plate 25 pushes the hydraulic oil on its upper side into the first fixed shell 18 through the No. 2 oil guide pipe of the third fixed shell 24. The hydraulic oil entering the first fixed shell 18 pushes the first sliding rod 19 to move left and compresses the second spring thereon.

[0050] After the first sliding rod 19 moves to the left, the first sliding rod 19 drives the limit block 20 thereon to move to the left, so that the limit block 20 releases the squeeze on the adjacent limit column 17 and releases the limit on the upper limit pin of the adjacent limit rod 16. At this time, the torsion of the second torsion spring of the limit rod 16 is released, driving the limit rod 16 to rotate, so that the limit rod 16 avoids the blocking column 1701, and then the limit rod 16 can slide into the connecting shell 10 under the elastic force of the second torsion spring thereon, so that the limit rod 16 is on the rotating ring 11. The adjacent limit grooves limit the rotating ring 11, so that the rotating ring 11 stops rotating. At this time, the rock core has moved to the uppermost connecting shell 10. After the rotating ring 11 stops rotating, the uppermost pull rope 12 can be rolled up to directly drive the sliding shell 4 to move upward through the rotating ring 11, the connecting shell 10 and the sliding ring 9, and clamp the rock core (here, the actions in Example 1 are repeated when the sliding ring 9 and the sliding shell 4 move, and the subsequent actions when the rock core enters the two semicircular shells 3 are consistent with the actions in Example 1).

[0051] If a rock fault is encountered, the rock core entering the two semicircular shells 3 will be faulted. When the rock core moves completely into the two semicircular shells 3, the limit on the second sliding rod 22 is released. At this time, the elastic force of the second spring on the first sliding rod 19 is released, and the first sliding rod 19 moves to the right, pushing the hydraulic oil in the first fixed shell 18 back into the third fixed shell 24 through the No. 2 oil guide pipe thereon. The hydraulic oil entering the third fixed shell 24 pushes the first sliding plate 25 to move downward, and the first sliding plate 25 drives the second sliding plate 26 to move downward synchronously through the first elastic telescopic rod 27. The second sliding plate 26 pushes the hydraulic oil on its lower side back into the second fixed shell 21 through the No. 1 oil guide pipe of the third fixed shell 24. The hydraulic oil entering the second fixed shell 21 pushes the third sliding plate 29 to move to the right, and the third sliding plate 29 pushes the second sliding rod 22 to reset through the third spring thereon.

[0052] When the fault distance is small, when the fault ends and a new rock core continues to pass through the inner tube 2 into the two semicircular shells 3, the rock core squeezes the inclined surface of the second sliding rod 22 (the above action is repeated here), and finally the sliding shell 4 and the connecting shell 10 corresponding to the first sliding rod 19 move upward and clamp the new rock core entering the two semicircular shells 3.

[0053] When the fault distance is large, the outer tube 102 continues to drill downward, the rock core that has entered the two semicircular shells 3 continues to move upward, the sliding shell 4 and the connecting shell 10 move upward synchronously, and when the pull rope 12 in the connecting shell 10 that contacts the telescopic part of the elastic telescopic plate 14 is completely moved out, the pull rope 12 drives the connecting shell 10 and the sliding shell 4 to move upward (the action of the parts in the connecting shell 10 and the sliding shell 4 here is consistent with the action in Example 1, but at this time there is no rock core in the connecting shell 10 and the sliding shell 4).

[0054] When the connecting shell 10 moves upward, the connecting shell 10 drives the limiting rod 16 to move upward, and the limiting pin of the limiting rod 16 is blocked by the limiting block 20, so that the limiting rod 16 rotates, and the second torsion spring of the limiting rod 16 continues to twist and accumulate force, and the limiting rod 16 avoids the blocking column 1701. After the connecting shell 10 and the sliding shell 4 are moved away, the subsequent connecting shell 10 and the sliding shell 4 continue to move upward, and the connecting shell 10 drives the limiting rod 16, the limiting column 17 and the blocking column 1701 thereon to move upward synchronously. When the limiting column 17 contacts the inclined surface of the limiting block 20, the limiting column 17 is guided by the inclined surface of the limiting block 20, so that the limiting column 17 The positioning column 17 moves toward the connecting shell 10 and releases the limit on the upper limit pin of the limit rod 16, and then the limit block 20 limits the limit pin of the limit rod 16, and then repeats the above action until the fault ends and a new core enters the inner tube 2. At this time, the core squeezes the second sliding rod 22 (here is the same as the action when the core squeezes the second sliding rod 22), so that the first sliding rod 19 moves to the left, and the limit block 20 releases the limit on the limit pin of the limit rod 16 (the above action of the limit rod 16 limiting the limit groove on the rotating ring 11 is repeated later), and finally the core that enters the two semicircular shells 3 again is clamped.

[0055] When a fault is encountered again, the above-mentioned action is repeated. By detecting whether there is a core entering the two semicircular shells 3, the clamping of the core is controlled. When a fault is encountered, the core that first enters the two semicircular shells 3 and the core that subsequently enters the two semicircular shells 3 maintain a relative position unchanged, so that the collected core can maintain the most original state of the fault, thereby improving the accuracy of collecting the core. By detecting the time when the core enters the inner tube 2, when clamping the core, it can be accurately clamped from the initial section of the core, thereby improving the protection effect of the core.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A core in-situ coring device for mine exploration, characterized in that: include: A drilling rig (1), the drilling rig (1) being equipped with a rotation drive module (101), the rotation drive module (101) being rotationally connected to an outer tube (102), the outer tube (102) being slidably and rotationally connected to an inner tube (2), the inner tube (2) being limitedly slidably connected to two semicircular shells (3) that are mirror-distributed and in contact with each other, the inner tube (2) being detachably equipped with a connecting piece (201), the connecting piece (201) being used to limit the position of the two semicircular shells (3); The clamping components arranged in a straight line are all arranged in the two semicircular shells (3) and are used to clamp the rock core. The clamping components include: A sliding shell (4) is connected in a limited sliding manner in the two semicircular shells (3), a damper is provided between the sliding shell (4) and the semicircular shells (3), the sliding shell (4) is sealingly and slidingly connected to a plurality of connecting rods (6), and the connecting rods (6) are fixedly connected to an arc-shaped plate (7); A sliding ring (9) is sealingly and slidingly connected in the sliding shell (4), and a tension spring is fixedly connected between the sliding ring (9) and the sliding shell (4); A trigger assembly is arranged on all the sliding shells (4) and is used to move adjacent arc-shaped plates (7).

2. The in-situ coring device for mining exploration according to claim 1 is characterized in that: A plurality of elastic blocks (8) are fixedly connected to one side of the arc-shaped plate (7) close to the axis of the sliding shell (4), and the elastic blocks (8) are inclined upward from a side close to the adjacent arc-shaped plate (7) to a side away from the adjacent arc-shaped plate (7).

3. The in-situ coring device for mining exploration according to claim 1, characterized in that: The trigger component comprises: The number of connecting shells (10) is the same as the number of the sliding shells (4), and they are respectively fixed to adjacent sliding rings (9); all the connecting shells (10) and all the sliding shells (4) are arranged in a staggered manner, and the uppermost side of all the connecting shells (10) and all the sliding shells (4) is the connecting shell (10); The number of rotating rings (11) is the same as the number of the connecting shells (10), and they are respectively rotatably connected in adjacent connecting shells (10), and a first torsion spring is fixedly connected between the two. The rotating ring (11) is fixedly connected to two pull ropes (12), and the pull ropes (12) pass through the adjacent connecting shell (10) on a side away from the connecting portion of the adjacent rotating ring (11) and are located outside the adjacent connecting shell (10). The sliding shell (4) is fixedly connected to the two pull ropes (12) of the adjacent connecting shell (10) at the lower side.

4. The in-situ coring device for mining exploration according to claim 3 is characterized in that: The trigger component also includes: The rotating module (13) is installed on the lower side of the connecting member (201), and the output shaft of the rotating module (13) is fixedly connected to the two pull ropes (12) in the uppermost connecting shell (10).

5. The in-situ coring device for mining exploration according to claim 3 is characterized in that: include: Two elastic telescopic plates (14) are respectively fixed in the two semicircular shells (3); the telescopic portion of the elastic telescopic plate (14) is used to limit the connection shell (10); the telescopic portion of the elastic telescopic plate (14) is provided with an inclined surface; the inclined surface of the telescopic portion of the elastic telescopic plate (14) and the connection shell (10) are pressed against each other; the inclined surface of the telescopic portion of the elastic telescopic plate (14) and the sliding shell (4) are pressed against each other; the connection shell (10) is slidably connected to two sliding blocks (1001); the pull rope (12) is used to press the adjacent sliding blocks (1001); the sliding blocks (1001) are provided with an inclined surface; the sliding blocks (1001) and the inclined surfaces of the telescopic portions of the elastic telescopic plates (14) adjacent to the inclined surfaces are pressed against each other; A limiting ring (15) is slidably connected in the two semicircular shells (3), a first spring is provided between the limiting ring (15) and the lower portion of the inner side of one of the semicircular shells (3), the limiting ring (15) is located between the lowermost sliding shell (4) and the two semicircular shells (3), and the limiting ring (15) is used to push the sliding shell (4) to move.

6. The in-situ coring device for mining exploration according to claim 3 is characterized in that: include: The number of limiting rods (16) is the same as the number of the connecting shells (10), and they are respectively slidably and rotatably connected to adjacent connecting shells (10); a second torsion spring is fixedly connected between the limiting rods (16) and the adjacent connecting shells (10); the rotating ring (11) is provided with circumferentially distributed limiting grooves; the limiting grooves of the rotating ring (11) are used to limit the adjacent limiting rods (16); The number of the limiting columns (17) is the same as the number of the connecting shells (10), and they are respectively slidably connected to adjacent connecting shells (10); a damper is arranged between the limiting columns (17) and the connecting shells (10); a limiting slide is arranged on the limiting column (17); a limiting pin is fixedly connected to the limiting rod (16); the limiting pin of the limiting rod (16) slides in a limited manner in the limiting slide of the adjacent limiting column (17); the connecting shell (10) is fixedly connected to a blocking column (1701); the blocking column (1701) is used to limit the movement of the limiting rod (16).

7. The in-situ coring device for mining exploration according to claim 6 is characterized in that: include: A first fixed shell (18) is fixedly connected to the side wall of the inner tube (2), a first sliding rod (19) is sealingly and slidably connected inside the first fixed shell (18), and a second spring is fixedly connected between the first and second sliding rods; A limit block (20) is fixedly connected to the first sliding rod (19), the limit block (20) is used to push the limit column (17) to move, the limit block (20) is provided with an inclined surface, and the inclined surface of the limit block (20) is used to guide the limit column (17).

8. The in-situ coring device for mining exploration according to claim 7, characterized in that: include: The second fixed shell (21) is fixedly connected to the lower side of the side wall of the inner tube (2); the second fixed shell (21) is sealingly and slidably connected to a second sliding rod (22); a side of the second sliding rod (22) located outside the second fixed shell (21) is provided with an inclined surface; an oil guide pipe is connected between the second fixed shell (21) and the first fixed shell (18).

9. The in-situ coring device for mining exploration according to claim 8, characterized in that: include: a third fixed shell (24) fixedly connected to the side wall of the inner tube (2); an oil guide pipe between the second fixed shell (21) and the first fixed shell (18) is divided into two sections by the third fixed shell (24) and respectively communicated with two sides of the third fixed shell (24); a first sliding plate (25) and a second sliding plate (26) are sealingly and slidably connected to the third fixed shell (24); the second sliding plate (26) is located on one side of the third fixed shell (24) close to the communicating portion of the oil guide pipe on the third fixed shell (24) and the second fixed shell (21); a third sliding plate (29) sealingly and slidably connected to the second fixed shell (21), the third sliding plate (29) being located between the second sliding rod (22) and the communicating portion between the second fixed shell (21) and the upper oil guide pipe, and a third spring being fixedly connected between the third sliding plate (29) and the second sliding rod (22); A locking assembly is arranged in the third fixed shell (24) and is used to control the movement of the first sliding plate (25) and the second sliding plate (26).

10. The in-situ coring device for mine exploration according to claim 9, characterized in that: The locking assembly comprises: A first elastic telescopic rod (27) is fixedly connected to the second sliding plate (26); a telescopic end of the first elastic telescopic rod (27) is fixedly connected to the first sliding plate (25); a limiting hole is arranged at the telescopic end of the first elastic telescopic rod (27); a second elastic telescopic rod (28) is fixedly connected to the inner peripheral side of the third fixed shell (24); the telescopic end of the second elastic telescopic rod (28) is used to limit the limiting hole of the telescopic end of the first elastic telescopic rod (27); a limiting protrusion is fixedly connected to the telescopic end of the second elastic telescopic rod (28); and a fixed portion of the first elastic telescopic rod (27) is used to squeeze the limiting protrusion of the telescopic end of the second elastic telescopic rod (28).

Images