A hole expansion device for geological exploration

Abstract

The present invention discloses a reaming device for geological exploration, which relates to the field of geological exploration reaming, and includes a bottom drill assembly, a mud discharge pipe, and a reaming assembly. The mud discharge pipe is arranged at the top of the bottom drill assembly, and the circumferential outer wall of the mud discharge pipe is fixedly connected to a second spiral blade; a movable pipe, one end of the movable pipe is inserted into the interior of the mud discharge pipe, and the end of the movable pipe away from the mud discharge pipe is provided with a fixed cylinder, a movable groove is provided inside the mud discharge pipe, and the bottom end of the movable pipe is fixedly connected to a limit ring. The present invention can effectively drain mud when drilling for geological exploration, ensuring that the mud does not generate a large Y-axis resistance to the bottom drill assembly, and at the same time can ensure good stability during the drilling process, facilitating the subsequent reaming work of the reaming assembly, and can also efficiently flush the first drill bit and the second drill bit in the bottom drill assembly through high-pressure water flow during the drilling process.

Description

Technical Field

[0001] The present invention relates to the field of geological exploration hole expansion, in particular to a hole expansion device for geological exploration. Background Art

[0002] Geological exploration is the investigation and research activity that uses various means and methods to survey and detect the geology, determine the appropriate bearing layer, determine the foundation type based on the bearing capacity of the bearing layer, and calculate the foundation parameters. It is the investigation and research of the rocks, strata, structure, minerals, hydrology, landforms, and other geological conditions within a specific area to determine the quality and quantity of the minerals, as well as the technical conditions for mining and utilization, and to provide the mineral reserves and geological data needed for mine construction design. During the geological exploration process, drilling and expanding holes in the sampling area are necessary to facilitate soil sampling and testing.

[0003] A search revealed a Chinese invention patent with publication number CN104234628A, which discloses a reamer for geological exploration. The reamer comprises a belt and a drill pipe, which is fixedly connected to the center of the belt by means of a crossbar. Multiple reaming rods are fixedly connected between the inner wall of the belt and the outer wall of the drill pipe. Multiple alloy blocks are evenly distributed on the lower end surface of the belt and the outer wall of the reaming rods. The reaming rods are symmetrically arranged about the center of the drill pipe, and both the drill pipe and the reaming rods are hollow and interconnected. The crossbars comprise multiple, upper and lower double-layer structures, symmetrically arranged about the central axis of the drill pipe. The reaming rods include a support plate with an L-shaped end face and an inclined plate mounted on the inner side of the two straight plates of the support plate. A triangular hollow channel is formed between the inclined plate and the two straight plates of the support plate, which is connected to the drill pipe. The inclined plate has multiple water outlets connected to the hollow channel, and the alloy blocks are evenly distributed on the end surface of a straight plate of the support plate. This invention achieves excellent reaming results and highly secures the connection between the reaming rods, the drill pipe, and the belt.

[0004] However, the above invention has the following shortcomings: during the drilling and reaming process, because the bottom drill rod is not equipped with a mud removal structure, as the drilling continues to deepen, the outer wall of the drill rod is easily blocked by mud, which not only increases the vertical resistance of the soil during drilling, but also easily damages the drill bit. At the same time, the entire reamer cannot adjust the reaming width during reaming, resulting in the inner diameter of the reamed hole not meeting the needs of people in different scenarios. Therefore, there is an urgent need for a geological exploration reaming device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a hole-reaming device for geological exploration to solve the problems raised in the above-mentioned background technology.

[0006] The technical solution of the present invention is: a hole enlarging device for geological exploration, comprising:

[0007] bottom drill assembly;

[0008] A mud discharge pipe, the mud discharge pipe is arranged on the top of the bottom drill assembly, and a second spiral blade is fixedly connected to the circumferential outer wall of the mud discharge pipe;

[0009] A movable tube, one end of which is inserted into the interior of the mud discharge pipe, a fixing cylinder is provided at the end of the movable tube away from the mud discharge pipe, a movable groove is provided inside the mud discharge pipe, and a bottom end of the movable tube is fixedly connected to a limiting ring;

[0010] A hole-expanding assembly, the hole-expanding assembly being arranged on the circumferential outer wall of the fixed cylinder;

[0011] The top of the fixed cylinder is fixedly connected to a docking cylinder, a threaded groove is provided on the outer wall of the top circumference of the docking cylinder, and a mounting hole is provided at one end of the docking cylinder close to the threaded groove;

[0012] An adjusting component is arranged inside the fixing cylinder.

[0013] Preferably, the bottom drill assembly includes a drill pipe, the circumferential outer wall of the drill pipe is fixedly connected to a connecting plate, the bottom of the connecting plate is provided with a mounting groove, a first drill bit and a second drill bit are arranged inside the mounting groove, the specification of the first drill bit is larger than the second drill bit, the first drill bit is close to the bottom of the connecting plate, one side outer wall of the connecting plate is fixedly connected with equidistantly distributed protrusions, the number of the connecting plates is six groups, the connecting plates and another group of the connecting plates form a flow guide channel, the top of the drill pipe is fixedly connected to a docking joint, the cross-section of the docking joint is an isosceles trapezoid, and the docking joint is threadedly connected to the mud discharge pipe.

[0014] Preferably, a mud drainage groove is provided on the circumferential outer wall of the drill pipe, and the mud drainage groove is provided in the middle of the two groups of connecting plates. An annular groove is provided on the top of the drill pipe, and the mud drainage groove is communicated with the annular groove.

[0015] Preferably, the circumferential inner wall of the drill pipe is provided with diversion grooves distributed in a circular shape at equal distances, the circumferential inner wall of the diversion groove is fixedly connected to an injector, the circumferential outer wall of the drill pipe is provided with a liquid outlet hole, the liquid outlet hole is connected to the diversion groove, one end of the injector extends to the outside of the liquid outlet hole, one end of the injector is fixedly connected to ring blocks distributed in a circular shape at equal distances, and two groups of the ring blocks form a dispersion groove.

[0016] Preferably, the reaming assembly includes a lower circular plate fixedly connected to the circumferential outer wall of the movable tube and an upper circular plate fixedly connected to the top of the fixed cylinder, the top outer wall of the lower circular plate is fixedly connected to a third rotating seat distributed in a circular shape at equal distances, the third rotating seat is rotatably connected to the second reaming rod, the bottom of the upper circular plate is fixedly connected to a fourth rotating seat distributed in a circular shape at equal distances, the fourth rotating seat is rotatably connected to the first reaming rod, the length of the first reaming rod is smaller than the second reaming rod, the first reaming rod is located above the second reaming rod, the width of the second reaming rod is larger than the first reaming rod, one side outer wall of the first reaming rod is fixedly connected to a fourth drill bit distributed in an equal distance, one side outer wall of the second reaming rod is fixedly connected to a third drill bit distributed in an equal distance, the inner diameter of the third drill bit is larger than the fourth drill bit, one end of the second reaming rod is fixedly connected to a rotating head, one end of the first reaming rod is provided with a first rotating seat, the rotating head is located inside the first rotating seat, a rotating shaft is inserted into the interior of the first rotating seat, and the first rotating seat is rotatably connected to the rotating head via the rotating shaft.

[0017] Preferably, one side of each of the first reaming rod and the second reaming rod is fixedly connected with an arc block, and the circumferential outer wall of the arc block is provided with tooth grooves distributed in a circular shape at equal distances, and the cross section of the tooth groove is triangular.

[0018] Preferably, the adjustment assembly includes a threaded sleeve fixedly connected to the circumferential inner wall of the docking tube, the top inner wall of the movable tube is fixedly connected to a second fixed seat, the top of the second fixed seat is rotatably connected to a threaded rod, the threaded rod is engaged with the threaded sleeve, the top outer wall of the threaded rod is fixedly connected to a first fixed seat, the top of the first fixed seat is provided with a docking groove, and the cross-section of the docking groove is a regular hexagon.

[0019] Preferably, a first spiral blade is fixedly connected to the circumferential inner wall of the drill pipe.

[0020] Preferably, the circumferential outer wall of the threaded rod is fixedly connected to a sleeve, the bottom of the sleeve is rotatably connected to a first movable rod, the end of the first movable rod away from the sleeve is rotatably connected to a second movable rod, and the bottom end of the second movable rod is rotatably connected to a second rotating seat.

[0021] Preferably, the circumferential inner wall of the fixed cylinder is fixedly connected with a partition, the top of the partition is provided with blocking grooves distributed at equal distances, the inner walls on both sides of the blocking groove are rotatably connected with blocking plates, and the second rotating seat is fixedly connected to the top outer wall of the blocking plate.

[0022] The present invention provides a geological exploration hole enlarging device through improvement, which has the following improvements and advantages compared with the prior art:

[0023] First, the present invention can effectively drain soil during geological exploration drilling, ensuring that the soil will not generate a large Y-axis resistance to the bottom drill assembly. At the same time, it can ensure good stability during the drilling process, facilitating the subsequent reaming work of the reaming assembly. Specifically, by providing a bottom drill assembly, a docking sleeve and a mounting hole, when the staff needs to reame the geology, they can first fix the docking sleeve with the external drill rod through the threaded groove, and then when the external drilling rig is started, it can drive the entire reaming device to rotate. When the reaming device is started, the drill pipe will first contact the soil. Since the circumferential outer wall of the drill pipe is fixedly connected with connecting plates distributed in a circular shape at equal distances, and the bottom of the connecting plate is an arc surface structure, the friction between the drill pipe and the soil is reduced during the drilling process, making the entire drilling work smoother. At the same time, during the drilling process, the specifications of the first drill bit and the second drill bit arranged on the outer wall of the connecting plate are gradually reduced, thereby dispersing the shear force of the first drill bit on the soil, and also avoiding the situation where the second drill bit is too large, resulting in the first drill bit not being able to fully contact the soil and affecting its continuous drilling.

[0024] Secondly, the present invention can efficiently flush the first drill bit and the second drill bit in the bottom drill assembly through high-pressure water flow during the drilling process, thereby avoiding the situation where a lot of soil adheres to the outer wall of the drill pipe and makes it impossible to rotate. In the process of flushing the first drill bit, the dispersion groove surrounded by multiple groups of annular blocks can realize the direct flushing of the first drill bit by the high-pressure water flow, thereby improving the cleaning effect of the drill bit. Specifically, by providing a diverter groove, an ejector, annular blocks and a dispersion groove, the staff can fix the external water pipe to the mounting hole while starting the hole expansion equipment. Then the high-pressure water flow flows into the drill pipe through the docking tube, the movable pipe and the mud discharge pipe. The high-pressure water flow flowing into the drill pipe will be accelerated by the first spiral blade, thereby making the impact force of the ejected water flow stronger. The high-pressure water flow flows into the ejector through the diverter groove, and finally the high-pressure water flow is ejected through the ejector. In the process of high-pressure water flow ejection, the dispersion groove can not only make the high-pressure water flow evenly ejected, but also change the impact direction of the high-pressure water flow, thereby realizing direct flushing of the drill bit, further improving the cleaning effect of the drill bit.

[0025] Third, the present invention can adjust the inner diameter of the reaming hole, so that the entire reaming device can produce holes with different inner diameters, thereby meeting people's needs for reaming holes with different diameters and expanding the scope of application of the equipment. Specifically, by providing a reaming assembly, before the staff needs to conduct geological exploration, they can first insert the external rotating rod into the first fixed seat, and then rotate the rotating rod to drive the first fixed seat and the threaded rod to rotate. During the rotation of the threaded rod, the movable tube at the bottom thereof will be driven to rise and fall. During the lifting of the movable tube, the angle between the first reaming rod and the second reaming rod can be changed, thereby achieving the adjustment of the inner diameter of the reaming hole of the entire reaming device. In the process of lifting the threaded rod, the sleeve fixed on the outer wall thereof can be lifted and lifted together. During the lifting of the sleeve, the first movable rod and the second movable rod at the bottom thereof can be driven to move, so that the angle between the first movable rod and the second movable rod changes. When the sleeve rises, the movable tube will also rise together, thereby increasing the inner diameter of the reaming hole of the reaming assembly. At the same time, the elevation angle of the blocking plate will also increase, thereby increasing the amount of water flow and ensuring the subsequent flushing effect of the bottom drill assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0029] Figure 3 For the present invention Figure 1 Schematic diagram of the enlarged structure at B in the middle;

[0030] Figure 4 It is a schematic diagram of the top view of the structure of the present invention;

[0031] Figure 5 It is a schematic diagram of the overall half-section structure of the present invention;

[0032] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0033] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at D in the middle;

[0034] Figure 8 It is a schematic diagram of the overall split structure of the present invention.

[0035] Reference numerals:

[0036] 1. Bottom drill assembly; 1001. Drill pipe; 1002. Liquid outlet; 1003. Ring block; 1004. Dispersion groove; 1005. First drill bit; 1006. Bump; 1007. Guide channel; 1008. Second drill bit; 1009. Mud discharge groove; 1010. Connecting plate; 1011. Ring groove; 1012. Diverter groove; 1013. Ejector; 1014. First spiral blade; 1015. Butt joint; 2. Mud discharge pipe; 3. Reaming assembly; 3001. First reaming rod; 3002. Arc block; 3003. Tooth groove; 3004. Rotating shaft; 3005. Second reaming rod; 3006. Third Drill bit; 3007, fourth drill bit; 3008, rotating head; 3009, first rotating seat; 4, fixed tube; 5, docking tube; 6, threaded groove; 7, mounting hole; 8, adjustment assembly; 8001, threaded rod; 8002, sleeve; 8003, first fixed seat; 8004, first movable rod; 8005, second movable rod; 8006, blocking plate; 8007, blocking groove; 8008, second rotating seat; 8009, second fixed seat; 8010, threaded sleeve; 8011, lower circular plate; 8012, upper circular plate; 9, movable tube; 10, movable groove; 11, limiting ring; 12, second spiral blade. DETAILED DESCRIPTION

[0037] The present invention is described in detail below, clearly and completely describing the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] The present invention provides a geological exploration hole enlarging device through improvement. The technical solution of the present invention is:

[0039] like Figures 1 to 8 As shown, an embodiment of the present invention provides a hole-reaming device for geological exploration, comprising:

[0040] The bottom drill assembly 1 can first contact the soil to perform rapid drilling work;

[0041] The mud discharge pipe 2 is arranged at the top of the bottom drill assembly 1. The outer circumferential wall of the mud discharge pipe 2 is fixedly connected with a second spiral blade 12. The mud generated during the drilling process can be transported upward through the second spiral blade 12 to facilitate the subsequent hole expansion work;

[0042] The movable tube 9 has one end inserted into the interior of the mud discharge pipe 2. A fixing tube 4 is provided at the end of the movable tube 9 away from the mud discharge pipe 2. A movable groove 10 is provided inside the mud discharge pipe 2. The bottom end of the movable tube 9 is fixedly connected to a limiting ring 11 to prevent the movable tube 9 from being directly pulled out of the interior of the mud discharge pipe 2.

[0043] The hole enlarging component 3 is arranged on the circumferential outer wall of the fixed cylinder 4, and can perform subsequent hole enlarging work, meeting people's hole enlarging needs;

[0044] The top of the fixed cylinder 4 is fixedly connected to the docking cylinder 5, and the outer wall of the top circumference of the docking cylinder 5 is provided with a threaded groove 6. The end of the docking cylinder 5 close to the threaded groove 6 is provided with a mounting hole 7, which is convenient for the staff to fix the external water pipe to the mounting hole 7;

[0045] The adjusting component 8 is arranged inside the fixed tube 4 and can adjust the inner diameter of the hole expansion component 3.

[0046] Furthermore, the bottom drill assembly 1 includes a drill pipe 1001, the circumferential outer wall of the drill pipe 1001 is fixedly connected to a connecting plate 1010, the bottom of the connecting plate 1010 is provided with a mounting groove, the inside of the mounting groove is provided with a first drill bit 1005 and a second drill bit 1008, the specification of the first drill bit 1005 is larger than the second drill bit 1008, the first drill bit 1005 is close to the bottom of the connecting plate 1010, one side of the outer wall of the connecting plate 1010 is fixedly connected with equidistantly distributed protrusions 1006, the number of the connecting plates 1010 is six groups, the connecting plates 1010 and another group of connecting plates 1010 are surrounded by a guide channel 1007, the top of the drill pipe 1001 is fixedly connected to a docking joint 1015, the docking joint 1 The cross section of 015 is an isosceles trapezoid, and the butt joint 1015 is threadedly connected to the mud discharge pipe 2. Since the circumferential outer wall of the drill pipe 1001 is fixedly connected with the connecting plates 1010 distributed in a circle at equal distances, and the bottom of the connecting plate 1010 is an arc structure, the friction between the drill bit and the soil is reduced during the drilling process, making the entire drilling work smoother. At the same time, during the drilling process, the specifications of the first drill bit 1005 and the second drill bit 1008 set on the outer wall of the connecting plate 1010 are gradually reduced, so that the shear force of the first drill bit 1005 on the soil can be dispersed, and the situation that the second drill bit 1008 is too large, resulting in the first drill bit 1005 being unable to fully contact the soil and affecting its continuous drilling, is avoided.

[0047] Furthermore, a mud discharge groove 1009 is provided on the circumferential outer wall of the drill pipe 1001, and the mud discharge groove 1009 is provided in the middle of the two sets of connecting plates 1010. An annular groove 1011 is provided on the top of the drill pipe 1001. The mud discharge groove 1009 is connected to the annular groove 1011, and the mud generated during the drilling process of the bottom drill assembly 1 can be transported upward and dispersed from the annular groove 1011 to avoid mud accumulation and blockage.

[0048] Furthermore, the circumferential inner wall of the drill pipe 1001 is provided with diverter grooves 1012 which are distributed in a circular pattern at equal distances. The circumferential inner wall of the diverter groove 1012 is fixedly connected to an injector 1013. The circumferential outer wall of the drill pipe 1001 is provided with a liquid outlet 1002 which is connected to the diverter groove 1012. One end of the injector 1013 extends to the outside of the liquid outlet 1002. One end of the injector 1013 is fixedly connected to ring blocks 1003 which are distributed in a circular pattern at equal distances. Two groups of ring blocks 1003 form a dispersion groove 1004. The high-pressure water flows into the injector 1013 through the diverter groove 1012, and finally the high-pressure water flows out through the injector 1013. During the process of high-pressure water flow spraying, the dispersion groove 1004 can not only make the high-pressure water flow evenly sprayed, but also change the impact direction of the high-pressure water flow, thereby achieving direct impact on the drill bit and further improving the cleaning effect of the drill bit.

[0049] Furthermore, the reaming assembly 3 includes a lower circular plate 8011 fixedly connected to the circumferential outer wall of the movable tube 9, and an upper circular plate 8012 fixedly connected to the top of the fixed cylinder 4. The top outer wall of the lower circular plate 8011 is fixedly connected to a third rotating seat distributed in a circular shape at equal distances. The third rotating seat is rotatably connected to the second reaming rod 3005. The bottom of the upper circular plate 8012 is fixedly connected to a fourth rotating seat distributed in a circular shape at equal distances. The fourth rotating seat is rotatably connected to the first reaming rod 3001. The length of the first reaming rod 3001 is smaller than that of the second reaming rod 3005. The first reaming rod 3001 is located above the second reaming rod 3005. The width of the second reaming rod 3005 is greater than that of the first reaming rod 3001. Since the second reaming rod 3005 is arranged below the first reaming rod 3001, Therefore, the pressure exerted during hole reaming is greater, so that the width of the second reaming rod 3005 is greater than that of the first reaming rod 3001. The outer wall of one side of the first reaming rod 3001 is fixedly connected with the fourth drill bit 3007 distributed at equal distances, and the outer wall of one side of the second reaming rod 3005 is fixedly connected with the third drill bit 3006 distributed at equal distances. The inner diameter of the third drill bit 3006 is greater than that of the fourth drill bit 3007. One end of the second reaming rod 3005 is fixedly connected with a rotating head 3008, and one end of the first reaming rod 3001 is provided with a first rotating seat 3009. The rotating head 3008 is located inside the first rotating seat 3009. The interior of the first rotating seat 3009 is plugged with a rotating shaft 3004, and the first rotating seat 3009 is rotatably connected to the rotating head 3008 through the rotating shaft 3004.

[0050] Furthermore, one side of the first reaming rod 3001 and the second reaming rod 3005 is fixedly connected with an arc block 3002, and the circumferential outer wall of the arc block 3002 is provided with tooth grooves 3003 distributed in a circular shape at equal distances, and the cross-section of the tooth grooves 3003 is triangular, which ensures the rigidity of the connection between the first reaming rod 3001 and the second reaming rod 3005, and avoids the connection from breaking during the drilling process.

[0051] Furthermore, the adjustment component 8 includes a threaded sleeve 8010 fixedly connected to the inner wall of the circumference of the docking tube 5, the top inner wall of the movable tube 9 is fixedly connected to the second fixed seat 8009, the top of the second fixed seat 8009 is rotatably connected to the threaded rod 8001, the threaded rod 8001 is engaged with the threaded sleeve 8010, and the top outer wall of the threaded rod 8001 is fixedly connected to the first fixed seat 8003. The top of the first fixed seat 8003 is provided with a docking groove, and the cross-section of the docking groove is a regular hexagon. During the lifting and lowering process of the sleeve 8002, the first movable rod 8004 and the second movable rod 8005 at the bottom thereof can be driven to move, so that the angle between the first movable rod 8004 and the second movable rod 8005 changes. When the sleeve 8002 rises, the movable tube 9 will also rise together, thereby increasing the inner diameter of the reaming assembly 3.

[0052] Furthermore, a first spiral blade 1014 is fixedly connected to the inner circumferential wall of the drill pipe 1001 , and the first spiral blade 1014 can accelerate the water flow, ensuring that the water flow can be ejected from the bottom of the bottom drill assembly 1 at high pressure.

[0053] Furthermore, the circumferential outer wall of the threaded rod 8001 is fixedly connected to the sleeve 8002, the bottom of the sleeve 8002 is rotatably connected to the first movable rod 8004, the end of the first movable rod 8004 away from the sleeve 8002 is rotatably connected to the second movable rod 8005, and the bottom end of the second movable rod 8005 is rotatably connected to the second rotating seat 8008.

[0054] Furthermore, a partition is fixedly connected to the circumferential inner wall of the fixed cylinder 4, and blocking grooves 8007 are equally spaced on the top of the partition. The inner walls on both sides of the blocking groove 8007 are rotatably connected to blocking plates 8006, and the second rotating seat 8008 is fixedly connected to the top outer wall of the blocking plate 8006. By adjusting the elevation angle of the blocking plate 8006, the water flow rate inside the entire fixed cylinder 4 can be adjusted, and it can be adjusted together with the adjustment of the hole expansion component 3.

[0055] Working principle: When the staff needs to expand the geological surface, they can first connect the docking sleeve 5 to the external drill rod through the threaded groove 6, and then when the external drilling rig is started, it can drive the entire expansion device to rotate. When the expansion device is started, the drill pipe 1001 will first come into contact with the soil. Since the circumferential outer wall of the drill pipe 1001 is fixedly connected with the connecting plates 1010 distributed in a circular shape at equal distances, and the bottom of the connecting plate 1010 is an arc surface structure, the friction between the drill pipe 1001 and the soil is reduced during the drilling process, making the entire drilling work smoother. At the same time, the first drill bit 1005 and the second drill bit 1008 arranged on the outer wall of the connecting plate 1010 are arranged in a regular manner during the drilling process. The grid gradually decreases, so it can disperse the shear force of the first drill bit 1005 on the soil, and also avoid the situation that the second drill bit 1008 is too large, which causes the first drill bit 1005 to be unable to fully contact the soil and affect its continuous drilling. While starting the hole expansion equipment, the staff can fix the external water pipe to the installation hole 7, and then the high-pressure water flows into the drill pipe 1001 through the docking tube 5, the movable pipe 9, and the mud discharge pipe 2. The high-pressure water flowing into the drill pipe 1001 will be accelerated by the first spiral blade 1014, so that the impact force of the ejected water flow will be stronger. The high-pressure water flows into the ejector 1013 through the diverter groove 1012, and finally the high-pressure water flows through The ejector 1013 sprays out, and in the process of high-pressure water flow spraying, the dispersion groove 1004 can not only make the high-pressure water flow sprayed evenly, but also change the impact direction of the high-pressure water flow, thereby achieving direct impact on the drill bit, further improving the cleaning effect of the drill bit. Before the staff needs to conduct geological exploration, they can first insert the external rotating rod into the first fixed seat 8003, and then rotate the rotating rod to drive the first fixed seat 8003 and the threaded rod 8001 to rotate. In the process of the threaded rod 8001 rotating, it will drive the movable tube 9 at the bottom thereof to rise and fall, and in the process of the movable tube 9 rising and falling, the angle between the first reaming rod 3001 and the second reaming rod 3005 can be increased. The change occurs, thereby realizing the adjustment of the inner diameter of the hole expansion of the entire hole expansion equipment, and the sleeve 8002 fixed on the outer wall of the threaded rod 8001 can be lifted and lowered together during the lifting and lowering of the threaded rod 8001. During the lifting and lowering of the sleeve 8002, the first movable rod 8004 and the second movable rod 8005 at the bottom thereof can be driven to move, so that the angle between the first movable rod 8004 and the second movable rod 8005 changes, and when the sleeve 8002 rises, the movable tube 9 also rises together, thereby increasing the inner diameter of the hole expansion of the hole expansion assembly 3. At the same time, the elevation angle of the blocking plate 8006 also increases, thereby increasing the amount of water flow, thereby ensuring the subsequent flushing effect of the bottom drill assembly 1.

[0056] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hole enlarging device for geological exploration, characterized in that: include: bottom drill assembly (1); A mud discharge pipe (2), the mud discharge pipe (2) being arranged at the top of the bottom drill assembly (1), and a second spiral blade (12) being fixedly connected to the circumferential outer wall of the mud discharge pipe (2); A movable tube (9), one end of the movable tube (9) is inserted into the interior of the mud discharge tube (2), a fixed tube (4) is provided at one end of the movable tube (9) away from the mud discharge tube (2), a movable groove (10) is provided inside the mud discharge tube (2), and the bottom end of the movable tube (9) is fixedly connected to a limiting ring (11); A hole expansion assembly (3), the hole expansion assembly (3) being arranged on the circumferential outer wall of the fixed cylinder (4); The top of the fixed cylinder (4) is fixedly connected to a docking cylinder (5), a threaded groove (6) is provided on the outer circumferential wall of the top end of the docking cylinder (5), and a mounting hole (7) is provided at one end of the docking cylinder (5) close to the threaded groove (6); The adjusting assembly (8) is arranged inside the fixing cylinder (4), and the bottom drill assembly (1) includes a drill pipe (1001), and the outer circumferential wall of the drill pipe (1001) is fixedly connected to a connecting plate (1010), and the bottom of the connecting plate (1010) is provided with a mounting groove, and a first drill bit (1005) and a second drill bit (1008) are arranged inside the mounting groove, the specification of the first drill bit (1005) is larger than that of the second drill bit (1008), and the first drill bit (1005) is close to the second drill bit (1008). The bottom of the connecting plate (1010) and the outer wall of one side of the connecting plate (1010) are fixedly connected with equidistantly distributed protrusions (1006), the number of the connecting plates (1010) is six groups, the connecting plates (1010) and another group of connecting plates (1010) form a flow guide (1007), the top of the drill pipe (1001) is fixedly connected with a butt joint (1015), the cross section of the butt joint (1015) is an isosceles trapezoid, and the butt joint (1015) is threadedly connected to the mud discharge pipe (2) The outer circumferential wall of the drill pipe (1001) is provided with a mud discharge groove (1009), and the mud discharge groove (1009) is provided in the middle of the two groups of connecting plates (1010). The top of the drill pipe (1001) is provided with an annular groove (1011), and the mud discharge groove (1009) is connected to the annular groove (1011). The inner circumferential wall of the drill pipe (1001) is provided with diversion grooves (1012) distributed in a circular shape at equal distances, and the inner circumferential wall of the diversion groove (1012) is fixedly connected to the ejector (1013). A liquid outlet hole (1002) is provided on the circumferential outer wall of the drill pipe (1001), the liquid outlet hole (1002) is connected to the diversion groove (1012), one end of the injector (1013) extends to the outside of the liquid outlet hole (1002), one end of the injector (1013) is fixedly connected to ring blocks (1003) distributed in a circular shape at equal distances, two groups of the ring blocks (1003) surround a dispersion groove (1004), and a first spiral blade (1014) is fixedly connected to the circumferential inner wall of the drill pipe (1001).

2. The hole-exploring device for geological exploration according to claim 1, characterized in that: The reaming assembly (3) comprises a lower circular plate (8011) fixedly connected to the outer circumferential wall of the movable tube (9), and an upper circular plate (8012) fixedly connected to the top of the fixed cylinder (4); the top outer wall of the lower circular plate (8011) is fixedly connected to a third rotating seat distributed in a circular shape with equal distances; the third rotating seat is rotatably connected to a second reaming rod (3005); the bottom of the upper circular plate (8012) is fixedly connected to a fourth rotating seat distributed in a circular shape with equal distances; the fourth rotating seat is rotatably connected to a first reaming rod (3001); the length of the first reaming rod (3001) is smaller than that of the second reaming rod (3005); the first reaming rod (3001) is located above the second reaming rod (3005); the width of the second reaming rod (3005) is larger than that of the first reaming rod (3001); 01), a fourth drill bit (3007) distributed at equal distances is fixedly connected to an outer wall of one side of the first reaming rod (3001), a third drill bit (3006) distributed at equal distances is fixedly connected to an outer wall of one side of the second reaming rod (3005), the inner diameter of the third drill bit (3006) is larger than that of the fourth drill bit (3007), one end of the second reaming rod (3005) is fixedly connected to a rotating head (3008), one end of the first reaming rod (3001) is provided with a first rotating seat (3009), the rotating head (3008) is located inside the first rotating seat (3009), a rotating shaft (3004) is inserted into the interior of the first rotating seat (3009), and the first rotating seat (3009) is rotatably connected to the rotating head (3008) through the rotating shaft (3004).

3. The hole-exploring device for geological exploration according to claim 2, characterized in that: One side of each of the first reaming rod (3001) and the second reaming rod (3005) is fixedly connected to an arc block (3002), and the circumferential outer wall of the arc block (3002) is provided with tooth grooves (3003) distributed in a circular shape at equal distances, and the cross section of the tooth grooves (3003) is triangular.

4. The hole-exploring device for geological exploration according to claim 3, characterized in that: The adjustment assembly (8) comprises a threaded sleeve (8010) fixedly connected to the inner circumferential wall of the docking tube (5); the top inner wall of the movable tube (9) is fixedly connected to a second fixing seat (8009); the top of the second fixing seat (8009) is rotatably connected to a threaded rod (8001); the threaded rod (8001) is meshed with the threaded sleeve (8010); the top outer wall of the threaded rod (8001) is fixedly connected to a first fixing seat (8003); a docking groove is provided on the top of the first fixing seat (8003); and the cross section of the docking groove is a regular hexagon.

5. The hole-exploring device for geological exploration according to claim 4, characterized in that: The circumferential outer wall of the threaded rod (8001) is fixedly connected to a sleeve (8002), the bottom of the sleeve (8002) is rotatably connected to a first movable rod (8004), one end of the first movable rod (8004) away from the sleeve (8002) is rotatably connected to a second movable rod (8005), and the bottom end of the second movable rod (8005) is rotatably connected to a second rotating seat (8008).

6. The hole-exploring device for geological exploration according to claim 5, characterized in that: A partition is fixedly connected to the circumferential inner wall of the fixed cylinder (4), and blocking grooves (8007) distributed at equal distances are provided on the top of the partition. The inner walls on both sides of the blocking groove (8007) are rotatably connected to blocking plates (8006), and the second rotating seat (8008) is fixedly connected to the top outer wall of the blocking plate (8006).

Images