A geological drilling device for mining

Abstract

The present invention relates to the field of geological drilling technology, and specifically discloses a geological drilling device for use in mining, comprising a three-dimensionally adjustable drive device, wherein a mounting plate is fixedly mounted at the bottom end of the drive device, a central shaft is rotatably mounted within the mounting plate, a rotating cylinder is rotatably mounted within a groove defined within the bottom end of the mounting plate, and a drill bit is fixedly mounted at the end of the central shaft extending from the rotating cylinder, and a spiral feed trough is defined on the outer wall of the drill bit. A soil feed gap is defined between the rotating cylinder and the drill bit. By defining a soil feed gap between the drill bit and the rotating cylinder, the present invention allows soil generated during drilling by the drill bit to enter the rotating cylinder and be transported along the rotating cylinder to the outside of the blasthole via a spiral blade. Thus, the soil can be transported dry, thereby preventing excessive moisture content in the blasthole after mud circulation, which could affect the explosive performance or blasting effect of the explosive in the blasthole.

Description

Technical Field

[0001] The invention relates to the technical field of geological drilling, in particular to geological drilling equipment used in mine development. Background Art

[0002] Mining refers to the process of excavating mineral resources from the surface or underground. Usually, equipment such as tunnel boring machines are used to crush and mine the minerals. Due to the complex geological structure of my country, the construction section is narrow and the rock strength is high during the mining process. The construction efficiency of tunnel boring machines is low, resulting in high equipment costs and large mechanical wear. At this time, blasting operations are required to crush the rocks.

[0003] For example, Chinese patent number CN107386978B discloses a three-axis grooving and drilling rock breaking device for coal mine rock tunnels, comprising a drill rod arranged on an adjusting bracket, wherein the long direction of the drill rod is horizontal and one end is connected to a horizontal drive mechanism, and the drill rod is arranged in parallel and spaced apart on the adjusting bracket in multiple pieces, and the horizontal drive mechanism drives the drill rod to move horizontally and perform drilling operations, and the spatial position of the drill rod on the adjusting bracket is adjustable. The present invention has a simple structure and can perform drilling construction at high speed and high quality while ensuring safety, drilling three holes at a time, thereby increasing the number of holes drilled per unit time, reducing drilling time, ensuring the uniformity of parallelism and angles between the holes, making the integrity of the blastholes better, reducing the depth error along the blastholes, improving the utilization rate of blasting energy, improving the blasting process, reducing the consumption of man-hours, and reducing construction costs.

[0004] However, in the above scheme, during the process of drilling the blasthole, the rock in the hole is cut with the aid of high-pressure water, and the rock powder in the blasthole is discharged simultaneously by flushing the blasthole with high-pressure water, which makes the water content in the blasthole after the slotting is completed too high. The presence of water will not only dilute or soak the explosives, reduce their explosive performance, and require more explosives to achieve the desired blasting effect, thereby increasing the blasting cost, but the incompressibility of water will hinder the effective transfer of explosive energy to the rock, reduce the degree of rock fragmentation, and lead to poor blasting effect. Summary of the Invention

[0005] The object of the present invention is to provide a geological drilling device for mining to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: A geological drilling device for mining, comprising a three-dimensionally adjustable driving device, wherein a mounting plate is fixedly mounted on the bottom end of the driving device, a central shaft is rotatably mounted in the mounting plate, a rotating cylinder sleeved outside the central shaft is rotatably mounted in a groove formed in the bottom end of the mounting plate, a drill bit is fixedly mounted on the end of the central shaft extending from the rotating cylinder, a spiral feed trough is formed on the outer wall of the drill bit, a soil feeding gap is formed between the rotating cylinder and the drill bit, a soil discharge channel is formed on the outer wall of the upper end of the rotating cylinder, and a spiral piece fixedly mounted on the outer wall of the central shaft is provided between the soil feeding gap and the soil discharge channel;

[0007] The utility model further comprises a driving assembly, wherein the driving assembly is used for driving the central shaft to rotate along its axis.

[0008] Preferably, the spiral sheet is provided with three sections, wherein the pitch and cross-section of the lower section are constant, the pitch and cross-section of the middle section gradually decrease, the pitch of the upper section is consistent with the lower section and the cross-section is constant, a sliding cylinder that can be slid and adjusted is installed in the rotating cylinder, and the sliding cylinder is also divided into three sections that can fit with the spiral sheet, a plurality of groups of drainage holes are provided on the inner wall of the sliding cylinder corresponding to the middle section of the spiral sheet, a square groove that can be connected to the drainage hole is provided on the inner wall of the rotating cylinder, conductive carbon black is fixedly installed in the square groove, and the conductive carbon black is connected to the external power circuit through the circuit buried in the rotating cylinder.

[0009] Preferably, a rotatable rotating ring is installed in the annular groove opened in the rotating cylinder, a plurality of arc grooves distributed in an annular pattern are opened on the outer wall of the rotating ring, and an annular groove is also opened in the rotating cylinder located below the annular groove, a plurality of sliding blocks that can slide centrifugally or centrifugally are slidably installed on the top surface of the annular groove, and a pin shaft that can slide in the arc groove is fixedly installed on the outer wall of the sliding block, and a rotating rod is rotatably installed between the sliding block and the top surface of the sliding cylinder.

[0010] Preferably, a pumping channel is opened in the central shaft, and the pumping channel is connected to the outside through a recessed hole at the bottom end of the drill bit. A filter is provided at the bottom end of the pumping channel, and the top end of the central shaft is connected to an external pumping device, and the external pumping device is connected to the power circuit where the conductive carbon black is located through an electrical signal.

[0011] Preferably, the driving assembly includes a central gear fixedly mounted on the outer wall of the central shaft and a rotatable driving gear, the inner top surface of the inner groove at the bottom end of the mounting plate rotates with two transmission gears that are meshed with the central gear, the inner wall of the rotating cylinder is provided with a gear ring that is meshed with the transmission gear, and the driving gear is driven by a servo motor mounted on the mounting plate.

[0012] Preferably, a sliding sleeve and a sliding ring that can slide are slidably installed in the interlayer opened on the outer wall of the rotating cylinder, a spring is provided between the sliding sleeve and the sliding ring, and an outer support block that can slide centrifugally or centripetally is slidably installed on the outer wall of the bottom end of the rotating cylinder, and the outer support block is rotatably connected to the sliding sleeve through a support rod.

[0013] Preferably, a water-blocking rod with a diameter smaller than that of the drainage hole is fixedly installed in the drainage hole through a connecting pin, and the gap between the water-blocking rod and the drainage hole is filled with filter cotton.

[0014] Preferably, a plurality of support blocks are fixedly mounted on the bottom end of the rotating cylinder, and the support blocks are in rolling contact with the drill bit via balls.

[0015] Preferably, a plurality of air flow holes are provided in the drill bit, and an air transmission channel is provided in the rotating cylinder. One end of the air transmission channel leads to the soil gap, and the other end is connected to the external air supply equipment, and the air transmission channel passes through the square groove where the conductive carbon black is located.

[0016] Preferably, a plurality of grinding protrusions are integrally formed on the outer wall of the drill bit.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a soil entry gap between the drill bit and the rotating drum to allow the debris generated during the drill bit excavation to enter the rotating drum and be transported along the rotating drum to the outside of the blasthole through the spiral blade. The debris can be transported in a dry soil transportation manner, avoiding the excessive water content in the blasthole after mud circulation that affects the explosive performance or blasting effect of the explosive in the blasthole, reducing the amount of explosives used while improving the blasting effect on the working surface.

[0019] 2. The present invention compresses the slag in the sliding cylinder through the mutual cooperation between the spiral blade and the sliding cylinder, and detects the water content in the slag through the resistance change after the conductive carbon black absorbs water. When the water content of the slag is too high, the moisture in the blasthole can be discharged, and the compression of the slag can be released after the water content in the blasthole drops to a preset value, so as to maximize the transportation efficiency of the slag and avoid reducing the transportation efficiency of the slag by the device due to excessive compression and drying of the slag.

[0020] 3. The present invention dries the compacted inner wall of the blasthole through a high-temperature dry air flow, so that a dry waterproof layer is formed on the inner wall of the blasthole. This not only prevents moisture in the soil layer from penetrating into the blasthole and affecting the explosives, but also further compresses the compacted soil layer on the inner wall of the blasthole and reserves cracks perpendicular to the blasthole, thereby increasing the impact force of the shock wave on the inner wall of the blasthole during blasting, and improving the refraction and reflection ability of the crack to the stress wave without affecting the starting direction of the crack. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a side view of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 3 is a side sectional view of the present invention;

[0024] Figure 4 It is a cross-sectional view of the three-dimensional structure of the present invention;

[0025] Figure 5 is a three-dimensional structural cross-sectional view of the drive assembly of the present invention;

[0026] Figure 6 For the present invention Figure 4 A partial enlarged view of point A in the middle;

[0027] Figure 7 For the present invention Figure 4 A partial enlarged view of point B in the middle;

[0028] Figure 8 For the present invention Figure 3 A partial enlarged view of point C in the middle.

[0029] In the figure: 1. driving device; 2. mounting plate; 3. rotating cylinder; 4. drill bit; 5. central shaft; 6. spiral plate; 7. sliding cylinder; 8. central gear; 9. transmission gear; 10. driving gear; 11. rotating rod; 12. sliding block; 13. rotating ring; 14. sliding sleeve; 15. conductive carbon black; 16. water-blocking rod; 17. drainage hole; 18. spring; 19. sliding ring; 20. support rod; 21. outer support block; 22. air flow hole; 23. rotating fan; 24. support block; 25. gas transmission channel. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figures 1 to 8The present invention provides a technical solution: a geological drilling device for mining, comprising a driving device 1 capable of three-dimensional adjustment, a mounting plate 2 fixedly mounted at the bottom end of the driving device 1, a central shaft 5 rotatably mounted in the mounting plate 2, a rotating cylinder 3 sleeved on the outside of the central shaft 5 rotatably mounted in a groove defined in the bottom end of the mounting plate 2, a drill bit 4 fixedly mounted on the end of the central shaft 5 extending out of the rotating cylinder 3, a spiral feed trough defined on the outer wall of the drill bit 4, a soil feed gap defined between the rotating cylinder 3 and the drill bit 4, a soil discharge channel defined on the upper outer wall of the rotating cylinder 3, a spiral piece 6 fixedly mounted on the outer wall of the central shaft 5 between the soil feed gap and the soil discharge channel;

[0032] It also includes a driving assembly for driving the central shaft 5 to rotate along its axis.

[0033] When this device is used, the drill bit 4 is first moved to the preset drilling position through the driving device 1, and the drill bit 4 is made perpendicular to the working surface. Then, the central axis 5 is driven by the driving component to drive the drill bit 4 to rotate together, and the drill bit 4 is rotated by the driving device 1 while moving in the direction of drilling. When the drill bit 4 enters the soil layer, the dust and debris generated during drilling will be squeezed to the surrounding areas, and the debris will be gathered upward through the spiral feeding trough opened on the outer wall of the drill bit 4 until the debris is immersed in the soil feeding gap between the drill bit 4 and the rotating cylinder 3. Then, the debris is transported along the central axis 5 to the upper end of the rotating cylinder 3 through the spiral blades 6 in the rotating cylinder 3 until the debris is discharged through the soil discharge channel opened on the outer wall of the rotating cylinder 3, completing the discharge of debris during the drilling process until the depth of the blasthole reaches the preset depth, and the drilling of the blasthole is completed.

[0034] In this way, by opening a soil entry gap between the drill bit 4 and the rotating cylinder 3, the debris generated when the drill bit 4 excavates enters the rotating cylinder 3 and is transported to the outside of the blasthole along the rotating cylinder 3 through the spiral blade 6. The debris can be transported by dry soil transportation, avoiding the excessive water content in the blasthole after mud circulation that affects the explosive performance or blasting effect of the explosives in the blasthole, reducing the amount of explosives used and improving the blasting effect on the working face.

[0035] Furthermore, the spiral piece 6 is set to three sections, wherein the pitch and cross-section of the lower section are constant, the pitch and cross-section of the middle section gradually decrease, and the pitch of the upper section is consistent with the lower section and the cross-section is constant. A sliding cylinder 7 that can be slid and adjusted is installed in the rotating cylinder 3, and the sliding cylinder 7 is also divided into three sections that can fit with the spiral piece 6. The sliding cylinder 7 has multiple groups of drainage holes 17 on the inner wall corresponding to the middle section of the spiral piece 6, and the inner wall of the rotating cylinder 3 is provided with a square groove that can be connected to the drainage hole 17. Conductive carbon black 15 is fixedly installed in the square groove, and the conductive carbon black 15 is connected to the external power circuit through the circuit buried in the rotating cylinder 3.

[0036] According to the above embodiment, when the slag rises along the spiral piece 6 in the rotating cylinder 3, the specific Figure 3When the slag enters the middle section of the spiral piece 6, the sliding cylinder 7 is driven by the external component to slide to the lowest end so that the inner wall of the sliding cylinder 7 is completely fitted with the outer wall of the spiral piece 6. Since the pitch and cross-section of the fins in the middle section of the spiral piece 6 are gradually reduced, the slag entering the middle section of the spiral piece 6 is squeezed and compressed. At this time, if there is moisture in the slag, the squeezed moisture can enter the square groove through the drainage hole 17 and be absorbed by the conductive carbon black 15. When the conductive carbon black 15 absorbs water, the water molecules will fill the gaps between the carbon black particles, resulting in closer contact between the carbon black particles, thereby reducing the resistivity. The moisture content in the slag can be detected by the ammeter in the external power circuit. If the moisture content exceeds the preset value, it is necessary to use drilling or compressed air drainage methods to drain the moisture in the blasthole, and after drainage, the blasthole is waterproofed to prevent further moisture from penetrating into the blasthole. If there is no moisture in the slag or the moisture content does not reach the preset value, the sliding cylinder 7 is driven upward by the external component, so that the middle and lower sections of the sliding cylinder 7 correspond to the upper and middle sections of the spiral piece 6 respectively, so that the outer wall of the spiral piece 6 no longer fits the inner wall of the sliding cylinder 7, and the compression of the slag is released, so as to achieve the purpose of improving the efficiency of slag transportation.

[0037] In this way, the slag in the sliding cylinder 7 is compressed by the mutual cooperation between the spiral blade 6 and the sliding cylinder 7, and the water content in the slag is detected by the resistance change after the conductive carbon black 15 absorbs water. The moisture in the blast hole can be discharged when the water content of the slag is too high, and the compression of the slag is released after the water content in the blast hole is reduced to a preset value, so that the transportation efficiency of the slag is maximized, avoiding the reduction of the transportation efficiency of the slag by the device due to excessive compression of the dry slag.

[0038] It is worth mentioning that when the moisture content in the slag is low, the external component can be used to drive the rotating cylinder 3 to slide back and forth in the gap, so as to perform multiple segmented screening of the moisture content in the slag, thereby avoiding the sudden increase in the water content in the blasthole caused by drilling through groundwater during drilling, which affects the blasting effect of the explosives.

[0039] Furthermore, a rotatable rotating ring 13 is installed in the annular groove opened in the rotating cylinder 3, and a plurality of arc grooves distributed in an annular pattern are opened on the outer wall of the rotating ring 13. An annular groove is also opened in the rotating cylinder 3 located below the annular groove, and a plurality of sliding blocks 12 that can slide centrifugally or centrifugally are slidably installed on the top surface of the annular groove, and a pin shaft that can slide in the arc groove is fixedly installed on the outer wall of the sliding block 12, and a rotating rod 11 is rotatably installed between the sliding block 12 and the top surface of the sliding cylinder 7.

[0040] According to the above embodiment, a specific embodiment of driving the sliding cylinder 7 to slide is provided. When the external structure such as the motor and the gear transmission drives the rotating ring 13 to rotate, see the specific embodiment. Figure 4 and Figure 5At this time, the sliding block 12 begins to move centrifugally or centripetally along the center of the circle where the axis of the rotating cylinder 3 is located under the action of the pin shaft on its outer wall. When the sliding block 12 moves centrifugally, the inclination angle between the rotating rod 11 and the sliding block 12 gradually increases, which can pull the sliding cylinder 7 up. When the sliding block 12 moves centrifugally, the inclination angle between the rotating rod 11 and the sliding block 12 gradually approaches 90 degrees, which can drive the sliding cylinder 7 down, completing the driving of the sliding cylinder 7 to slide up and down.

[0041] Furthermore, a pumping channel is opened in the central axis 5, and the pumping channel is connected to the outside through the concave hole at the bottom end of the drill bit 4. A filter is provided at the bottom end of the pumping channel. The top end of the central axis 5 is connected to the external pumping equipment, and the external pumping equipment is connected to the power circuit where the conductive carbon black 15 is located through an electrical signal.

[0042] According to the above embodiment, when the current of the circuit where the conductive carbon black 15 is located rises to a value exceeding the preset value, the external pumping equipment extracts the water in the blast hole from the concave hole at the bottom of the drill bit 4 through the pumping channel opened in the central axis 5, and filters the mud mixed with the slag and water through the filter screen, so that large particles of slag can still pass through the inlet layer into the sliding cylinder 7, and when the mud enters the central axis 5, it will drive the inclined rotating fan 23 to rotate, continuously scraping the surface of the filter screen to prevent the filtered slag from clogging the filter screen.

[0043] Furthermore, the driving assembly includes a central gear 8 fixedly mounted on the outer wall of the central axis 5 and a rotatable driving gear 10. The inner top surface of the inner groove at the bottom end of the mounting plate 2 rotates with two transmission gears 9 that are meshed with the central gear 8. The inner wall of the rotating cylinder 3 is provided with a gear ring that is meshed with the transmission gear 9. The driving gear 10 is driven by a servo motor mounted on the mounting plate 2.

[0044] According to the above embodiment, a specific embodiment of a driving assembly is provided. When an external driving member such as a motor and a gear drives the driving gear 10 to rotate, see FIG. Figure 4 When the driving gear 10 drives the central shaft 5 and the central gear 8 to rotate clockwise together, the rotating cylinder 3 can be driven to rotate counterclockwise through the transmission gears 9 on both sides. That is, when the drill bit 4 rotates clockwise, the rotating cylinder 3 and the sliding cylinder 7 rotate counterclockwise together. Not only can the defects on the inner wall of the blasthole be smoothed by the outer wall of the rotating cylinder 3, avoiding the defects on the inner wall of the blasthole hindering the stress wave and blasting gas generated during blasting from affecting the crack length and expansion rate, thereby reducing the blasting effect, but also the transportation efficiency of the slag can be further improved by increasing the friction between the slag and the sliding cylinder 7.

[0045] Furthermore, a sliding sleeve 14 and a sliding ring 19 are slidably installed in the interlayer opened on the outer wall of the rotating cylinder 3, a spring 18 is provided between the sliding sleeve 14 and the sliding ring 19, and an outer support block 21 that can slide centrifugally or centripetally is slidably installed on the outer wall of the bottom end of the rotating cylinder 3, and the outer support block 21 is rotatably connected to the sliding sleeve 14 through a support rod 20.

[0046] According to the above embodiment, since the rotating cylinder 3 rotates in the opposite direction when the drill bit 4 rotates, the sliding ring 19 is driven by an electric control or a cylinder to slide along the interlayer of the outer wall of the rotating cylinder 3, and the spring 18 is compressed to push the sliding sleeve 14 to slide along the interlayer together, and the outer support block 21 is driven by the support rod 20 to slide centrifugally along the outer wall of the bottom end of the rotating cylinder and expand to fit with the inner wall of the blasthole. The outer support block 21 can be used to smooth the inner wall of the blasthole when the rotating cylinder 3 rotates, and due to the elastic transmission between the sliding ring 19 and the sliding sleeve 14 through the spring 18, the outer support block 21 always exerts a certain pressure on the inner wall of the blasthole when it fits with the inner wall of the blasthole, which can compact the soil layer on the inner wall of the blasthole and discharge the air in the soil layer, so that the soil layer on the inner wall of the blasthole can reduce the absorption of the explosion shock wave by the soil compression during blasting. On the basis of avoiding the influence of the defects of the inner wall of the blasthole on the explosion effect, the blasting effect of the explosive is further improved, thereby increasing the shear force of the shock wave in the blasthole on the working surface.

[0047] Furthermore, a water-blocking rod 16 having a diameter smaller than that of the drainage hole 17 is fixedly installed in the drainage hole 17 via a connecting pin, and the gap between the water-blocking rod 16 and the drainage hole 17 is filled with filter cotton.

[0048] According to the above embodiment, it can be seen that when the slag enters the middle section of the spiral blade 6 and is compressed, the moisture in the slag will enter the square groove where the conductive carbon black 15 is located through the drainage hole 17. By setting a water-blocking rod 16 with a diameter smaller than the drainage hole 17, the drainage hole 17 with a larger aperture can be prevented from being blocked by large particles of slag, so that the drainage hole 17 can be set as a hydrophobic hole with a larger aperture, thereby increasing the rate at which moisture enters the square groove and contacts the conductive carbon black 15, and the filter cotton in the gap between the water-blocking rod 16 and the drainage hole 17 can not only filter the large particles in the mud, but also play a role in blocking the drainage hole 17 when the sliding cylinder 7 slides upward.

[0049] Furthermore, a plurality of support blocks 24 are fixedly mounted on the bottom end of the rotating cylinder 3 , and the support blocks 24 are in rolling contact with the drill bit 4 via balls.

[0050] According to the above embodiment, it can be seen that by arranging a support block 24 in the soil clearance between the rotating cylinder 3 and the drill bit 4, the installation of the rotating cylinder 3 is no longer only provided by the mounting plate 2 to provide pulling force, and the pressure of the rotating cylinder 3 during operation can be shared by the supporting force provided by the drill bit 4, and the ball bearings between the support block 24 and the drill bit 4 can reduce the friction between the two when they rotate in opposite directions, thereby improving the stability of the device during operation.

[0051] Furthermore, a plurality of air flow holes 22 are provided in the drill bit 4, and an air supply channel 25 is provided in the rotating cylinder 3. One end of the air supply channel 25 leads to the soil gap, and the other end is connected to the external air supply equipment, and the air supply channel 25 passes through the square groove where the conductive carbon black 15 is located.

[0052] According to the above embodiment, when the external gas supply equipment delivers high-temperature dry gas to the gas delivery channel 25, the specific Figure 8 After the outer support block 21 compacts the inner wall of the blasthole by rotating, high-pressure and high-temperature dry gas is injected into the gas transmission channel 25 through the external gas supply equipment. When the dry gas enters the soil gap, part of the gas will enter the bottom of the drill bit 4 through the air flow hole 22 and flow out along the outer wall of the drill bit 4 and the inner wall of the blasthole. The compacted inner wall of the blasthole can be dried to form a water-proof layer on the inner wall of the blasthole, thereby preventing moisture in the soil from penetrating into the blasthole and affecting the explosives. The gas reaches the bottom of the drill bit 4. The gas in the groove will also be diverted to the rotating fan 23, which will blow the rotating fan 23 to accelerate its rotation when it enters the central axis 5, further improving the cleaning ability of the rotating fan 23 on the filter. At the same time, since the gas transmission channel 25 passes through the square groove where the conductive carbon black 15 is located, when the sliding cylinder 7 moves upward, that is, when the moisture content of the slag is stopped, the dry gas can be used to dry the conductive carbon black 15, so as to avoid the conductive carbon black 15 reaching saturation after absorbing water for a long time and becoming desensitized to the increase in moisture in the soil layer, thereby improving the accuracy of moisture content monitoring.

[0053] In this way, the compacted inner wall of the blasthole is dried by the high-temperature dry air flow, so that a dry waterproof layer is formed on the inner wall of the blasthole. This not only prevents moisture in the soil layer from seeping into the blasthole and affecting the explosives, but also further compresses the compacted soil layer on the inner wall of the blasthole, and reserves cracks perpendicular to the blasthole, thereby increasing the impact force of the shock wave on the inner wall of the blasthole during blasting, and improving the crack's refraction and reflection ability to stress waves without affecting the starting direction of the crack.

[0054] Furthermore, a plurality of grinding protrusions are integrally formed on the outer wall of the drill bit 4 .

[0055] According to the above embodiment, it can be seen that the grinding and extrusion capabilities of the drill bit 4 can be improved by integrally forming multiple grinding protrusions on the outer wall of the drill bit 4, so that the drill bit 4 can combine drilling by grinding or impacting when dealing with harder geological layers or other special geological layers, thereby improving the scope of application of the device.

[0056] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and drawings can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description will be given here.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A geological drilling device for mining, comprising a driving device (1) capable of three-dimensional adjustment, characterized in that: The bottom end of the driving device (1) is fixedly mounted with a mounting plate (2), a central shaft (5) is rotatably mounted in the mounting plate (2), a rotating cylinder (3) sleeved on the outside of the central shaft (5) is rotatably mounted in a groove provided in the bottom end of the mounting plate (2), a drill bit (4) is fixedly mounted on the end of the central shaft (5) extending out of the rotating cylinder (3), and a spiral feed trough is provided on the outer wall of the drill bit (4), a soil feeding gap is provided between the rotating cylinder (3) and the drill bit (4), a soil discharge channel is provided on the outer wall of the upper end of the rotating cylinder (3), and a spiral piece (6) fixedly mounted on the outer wall of the central shaft (5) is provided between the soil feeding gap and the soil discharge channel; Also included is a drive assembly, the drive assembly being used to drive the central shaft (5) to rotate along its axis; The spiral piece (6) is set to three sections, wherein the pitch and cross-section of the lower section are constant, the pitch and cross-section of the middle section are gradually reduced, and the pitch of the upper section is consistent with the lower section and the cross-section is constant. A sliding cylinder (7) that can be slidably adjusted is installed in the rotating cylinder (3), and the sliding cylinder (7) is also divided into three sections that can fit with the spiral piece (6). The inner wall of the sliding cylinder (7) corresponding to the middle section of the spiral piece (6) is provided with a plurality of groups of drainage holes (17). The inner wall of the rotating cylinder (3) is provided with a square groove that can be connected to the drainage hole (17). Conductive carbon black (15) is fixedly installed in the square groove, and the conductive carbon black (15) is connected to the external power circuit through a circuit buried in the rotating cylinder (3).

2. The geological drilling equipment for mining according to claim 1, characterized in that: A rotatable rotating ring (13) is installed in a first annular groove provided in the rotating cylinder (3), a plurality of annularly distributed arc grooves are provided on the outer wall of the rotating ring (13), a second annular groove is further provided in the rotating cylinder (3) below the first annular groove, a plurality of sliding blocks (12) capable of centrifugal or centrifugal sliding are slidably installed on the top surface of the second annular groove, and a pin shaft capable of sliding in the arc groove is fixedly installed on the outer wall of the sliding block (12), and a rotating rod (11) is rotatably installed between the sliding block (12) and the top surface of the sliding cylinder (7).

3. The geological drilling equipment for mining according to claim 2, characterized in that: A water pumping channel is provided in the central shaft (5), and the water pumping channel is connected to the outside through a recessed hole at the bottom end of the drill bit (4). A filter is provided at the bottom end of the water pumping channel. The top end of the central shaft (5) is connected to an external water pumping device, and the external water pumping device is connected to the power supply circuit where the conductive carbon black (15) is located through an electrical signal.

4. The geological drilling equipment for mining according to claim 2, characterized in that: The driving assembly comprises a central gear (8) fixedly mounted on the outer wall of the central shaft (5) and a rotatable driving gear (10); two transmission gears (9) are rotatably mounted on the inner top surface of the inner groove at the bottom end of the mounting plate (2), both of which are meshed with the central gear (8); a gear ring is provided on the inner wall of the rotating cylinder (3) and is meshed with the transmission gear (9); and the driving gear (10) is driven by a servo motor mounted on the mounting plate (2).

5. The geological drilling equipment for mining according to claim 1, characterized in that: A sliding sleeve (14) and a sliding ring (19) capable of sliding are slidably installed in an interlayer provided on the outer wall of the rotating cylinder (3), a spring (18) is provided between the sliding sleeve (14) and the sliding ring (19), an outer support block (21) capable of centrifugal or centripetal sliding is slidably installed on the outer wall of the bottom end of the rotating cylinder (3), and the outer support block (21) is rotatably connected to the sliding sleeve (14) via a support rod (20).

6. The geological drilling equipment for mining according to claim 5, characterized in that: A water blocking rod (16) having a diameter smaller than that of the drainage hole (17) is fixedly installed in the drainage hole (17) via a connecting pin, and a gap between the water blocking rod (16) and the drainage hole (17) is filled with filter cotton.

7. The geological drilling equipment for mining according to claim 6, characterized in that: A plurality of support blocks (24) are fixedly mounted on the bottom end of the rotating cylinder (3), and the support blocks (24) are in rolling contact with the drill bit (4) via balls.

8. The geological drilling equipment for mining according to claim 1, characterized in that: A plurality of air flow holes (22) are provided in the drill bit (4), and an air delivery channel (25) is provided in the rotating cylinder (3). One end of the air delivery channel (25) is connected to the soil gap, and the other end is connected to an external air supply device. The air delivery channel (25) passes through the square groove where the conductive carbon black (15) is located.

9. The geological drilling equipment for mining according to any one of claims 1 to 8, characterized in that: The outer wall of the drill bit (4) is integrally formed with a plurality of grinding protrusions.

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