A mine drilling rig having a borehole direction guiding device

Abstract

The application discloses a mine exploitation drilling machine with a drilling direction guiding device, and belongs to the technical field of mine exploitation equipment. The mine exploitation drilling machine comprises a first guiding device and a second guiding device. The first guiding device comprises a first guiding rod, and a fiber torque sensor and a guide bead are mounted on the inner wall of the first guiding rod. The second guiding device comprises a second guide rod, one end of the second guide rod is fixedly connected with a rotating ball, the other end of the second guide rod is provided with a blocking ring, a guide sleeve is sleeved on the second guide rod, sliding grooves are uniformly distributed on the outer side of the guide sleeve, first sliding blocks are arranged in the sliding grooves, and the first sliding blocks are hingedly connected with first hydraulic cylinders. The mine exploitation drilling machine with the drilling direction guiding device is provided, the first direction guiding device and the second direction guiding device are arranged to guide the drilling direction, the second hydraulic cylinder and the third hydraulic cylinder are arranged to adjust the initial drilling angle of the drilling machine, the dust collecting cover and the dust collecting box are arranged to prevent dust raising, and the water mist spraying system can form larger particle groups from dust particles.

Description

Technical Field

[0001] This invention relates to the field of mining equipment technology, and in particular to a mining drilling rig with a drilling direction guidance device. Background Technology

[0002] In open-pit mining operations, rock drilling is a crucial link between blasting and ore extraction, and its quality directly determines blasting efficiency and mining profitability. Drilling equipment, as the core tool, uses drill bits harder than rock to create cylindrical boreholes in the target rock mass through rotary cutting or rotary compression, meeting the blasting design requirements. The depth, diameter, and verticality of these boreholes directly affect the amount of explosives loaded, the distribution of blasting energy, and the ore crushing effect.

[0003] However, in actual mining, traditional drilling equipment relies on support frames for erection and fixation, lacking a drill bit correction structure, which has significant limitations. Open-pit mines exhibit complex lithological distributions due to geological tectonic movements: within the same mining area, the rock may contain interlayers of high-hardness granite and weak shale, or have dense fractures and fault structures. When the drill bit drills, the lateral compressive force generated at the interface between hard and soft rock, or the stress concentration at fractures, can disrupt the drill bit's stress balance, causing drilling deviation.

[0004] Such drilling deviation has multiple negative impacts. From an engineering quality perspective, tilted or bent blast holes prevent explosives from being evenly distributed within the ore, significantly increasing the proportion of large ore pieces after blasting. In some mines, the proportion of large pieces even soars from normal levels, increasing secondary crushing costs. From a safety perspective, deviated boreholes may cause uncontrolled flyrock during blasting, posing a threat to surrounding equipment and personnel. From a mining efficiency perspective, boreholes with excessive deviation require rework, leading to longer single-cycle operation times and severely restricting mine production capacity. Therefore, there is an urgent need to design a mining drilling rig with a borehole direction guidance device to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a mining drilling rig with a drilling direction guidance device. The rig is equipped with a first direction guidance device and a second direction guidance device to guide the drilling direction. Guide beads on the inner wall of the first guide rod significantly reduce the resistance during drill rod feed through rolling friction, while simultaneously constraining the drill rod axis direction and reducing drilling deviation. The second direction guidance device corrects the drilling direction of the roller cone drill bit by changing the extension and retraction of the first hydraulic cylinder at different positions, reducing the drilling deviation rate. The second and third hydraulic cylinders can adjust the initial drilling angle of the drilling rig, and a laser positioning device ensures the drill bit stays within the specified range. Drilling is performed at a fixed location to enhance environmental adaptability and reduce errors caused by manual positioning; a spiral-shaped slag discharge chute can reduce drill jamming caused by rock debris accumulation; dust hoods and dust collection boxes prevent dust from being stirred up, and the water mist spray system in the dust collection box can cause dust particles to adhere to the surface of water droplets through inertial collision, interception, and agglomeration, forming larger particle clusters, thereby accelerating dust settling and improving the working environment; a fiber optic torque sensor and a hydraulic unloading device are installed, which can unload the hydraulic motor when the fiber optic torque sensor detects abnormal data, preventing drill rod breakage.

[0006] To achieve the above objectives, the present invention provides a mining drilling rig with a drilling direction guidance device, comprising a first guiding device and a second guiding device. The first guiding device includes a first guiding rod, on the inner wall of which an optical fiber torque sensor and a guide bead are installed. The second guiding device includes a second guiding rod, one end of which is fixedly connected to a rotating ball, and the other end of which is fitted with a retaining ring. A guide sleeve is fitted on the second guiding rod, and grooves are evenly distributed on the outer side of the guide sleeve. A first slider is provided in the groove, and the first slider is hinged to a first hydraulic cylinder.

[0007] Preferably, the first guide rod is fixedly installed on the support frame, the top of the support frame is provided with a first motor, the first motor is connected to the first threaded rod through a transmission structure, the first threaded rod is fitted with a second slider, the second slider has a threaded hole that meshes with the first threaded rod, the second slider is fixedly connected to the slide plate, the slide plate is equipped with a hydraulic motor, the hydraulic motor is connected to the drill rod, the drill rod and the first guide rod are coaxially arranged, and the hydraulic motor is connected to the hydraulic unloading device.

[0008] Preferably, the top of the rotating ball is provided with a first mounting groove, the roller cone drill bit is threadedly connected to the first mounting groove, the rotating ball is connected to the reaming drill bit, the reaming drill bit is provided with a second mounting groove, the top of the second mounting groove cooperates with the rotating ball, and the first hydraulic cylinder is hingedly installed in the second mounting groove.

[0009] Preferably, the reaming drill bit is connected to the drill rod, and the reaming drill bit is evenly distributed with slag discharge grooves and teeth. The slag discharge grooves are spiral-shaped, and the teeth include flat teeth and pointed teeth.

[0010] Preferably, a hinge block is fixedly connected to the middle of the support frame. The top of the hinge block is hinged to the second hydraulic cylinder, the middle of the hinge block is hinged to the first connecting rod, the bottom of the first connecting rod near the hinge block is hinged to the third hydraulic cylinder, the second hydraulic cylinder is hinged to the first connecting rod, and both the first connecting rod and the third hydraulic cylinder are hinged to the support block. The support block is fixedly installed on the vehicle body.

[0011] Preferably, the bottom of the support frame is provided with a U-shaped support leg, and a laser positioning device is installed at the center of the bottom of the U-shaped support leg.

[0012] Preferably, a dust collection hood is installed at the end of the first guide rod. The dust collection hood is a telescopic structure. A suction pipe is installed on the side wall of the dust collection hood and is connected to the dust collection box. The dust collection box is connected to a negative pressure fan. A water mist spraying system is installed on the top of the inner wall of the dust collection box. A second motor is installed inside the side wall of the dust collection box and is connected to a transmission rod. Two turbines are installed on the transmission rod. Both turbines mesh with worm gears. Both worm gears are fixedly connected to a second threaded rod. A scraper is installed on the second threaded rod and has threaded holes that mate with the second threaded rod. Weight sensors are arrayed inside the bottom plate of the dust collection box. A door is opened on the side wall of the dust collection box away from the second motor.

[0013] Preferably, the roller cone drill bit is equipped with an inclination sensor and an azimuth sensor. The laser positioning device, fiber optic torque sensor, weight sensor, inclination sensor, and azimuth sensor interact with the control system. The control system is connected to the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the first motor, the hydraulic unloading device, the second motor, and the hydraulic motor.

[0014] Therefore, the present invention employs the above-mentioned mining drilling rig with a drilling direction guidance device, which has the following beneficial effects:

[0015] (1) A first direction guiding device and a second direction guiding device are set to guide the drilling direction. The guide bead set on the inner wall of the first guide rod significantly reduces the resistance when the drill rod is fed through rolling friction, while constraining the axis direction of the drill rod and reducing the drilling deviation. The second direction guiding device corrects the drilling direction of the roller cone drill bit by changing the extension and retraction of the first hydraulic cylinder at different positions, thereby reducing the drilling deviation rate.

[0016] (2) The second and third hydraulic cylinders can be set to adjust the initial drilling angle of the drilling rig. The laser positioning device can make the drill bit drill in the specified position, enhance environmental adaptability, and reduce the error caused by manual positioning.

[0017] (3) Setting up a spiral-shaped slag discharge chute can reduce drill jamming caused by the accumulation of rock debris;

[0018] (4) Setting up dust collection hoods and dust collection boxes can prevent dust from being raised. The water mist spraying system in the dust collection box can cause dust particles to adhere to the surface of water droplets through inertial collision, interception, and agglomeration, forming larger particle clusters, thereby accelerating dust settling and improving the working environment.

[0019] (5) A fiber optic torque sensor and a hydraulic unloading device are installed. When the fiber optic torque sensor detects abnormal data, the hydraulic unloading device can unload the hydraulic motor to prevent the drill rod from breaking.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a mining drilling rig with a drilling direction guidance device according to the present invention;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of a rotary drill bit and a reamer bit for a mining drilling rig with a drilling direction guiding device according to the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the second guiding device of a mining drilling rig with a drilling direction guiding device according to the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the first hydraulic cylinder and the second guide rod of a mining drilling rig with a drilling direction guiding device according to the present invention;

[0025] Figure 5 This is a schematic diagram of the dust collection box structure of a mining drilling rig with a drilling direction guiding device according to the present invention;

[0026] Figure 6 This is a schematic diagram of the scraper drive structure of a mining drilling rig with a drilling direction guidance device according to the present invention.

[0027] Figure Labels

[0028] 1. Support block; 2. First connecting rod; 3. Second hydraulic cylinder; 4. Third hydraulic cylinder; 5. Support frame; 6. Support leg; 7. First motor; 8. First threaded rod; 9. Slide plate; 10. Hydraulic motor; 11. Drill rod; 12. First guide rod; 13. Dust collection hood; 14. Dust suction pipe; 15. Roller cone drill bit; 16. Reamer drill bit; 17. Tooth; 18. Slag discharge trough; 19. Rotating ball; 20. First mounting slot; 21. Second guide rod; 22. Guide sleeve; 23. First hydraulic cylinder; 24. Retaining ring; 25. Second mounting slot; 26. First slider; 27. Dust collection box; 28. Water mist spray system; 29. ​​Second motor; 30. Transmission rod; 31. Turbine; 32. Worm gear; 33. Second threaded rod; 34. Scraper; 35. Negative pressure fan; 36. Box door. Detailed Implementation

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] Example 1

[0032] like Figures 1 to 6As shown, this invention provides a mining drilling rig with a drilling direction guidance device, including a first guiding device and a second guiding device, which can guide the drilling direction of the drilling rig. The first guiding device includes a first guiding rod 12, and the drill rod 11 is coaxially arranged with the first guiding rod 12. An optical fiber torque sensor and guide beads are installed on the inner wall of the first guiding rod 12. The optical fiber torque sensor can detect the torque of the drill rod 11 and promptly detect situations where the drill rod 11 is stuck or overloaded. The optical fiber torque sensor is connected to a control system, and the control system can control a hydraulic unloading device to unload according to the data detected by the optical fiber torque sensor, preventing the drill rod 11 from breaking. The guide beads form a rolling support structure. The multi-point support of the guide beads can limit the radial sway of the drill rod 11, ensure the initial accuracy of the drilling direction, and reduce the frictional resistance between the drill rod 11 and the inner wall of the first guiding rod, making the rotation of the drill rod 11 smoother and reducing energy loss. The first guiding rod 12 is fixedly installed on a support frame 5, and the support frame 5 provides support for the first guiding rod 12.

[0033] A first motor 7 is mounted on the top of the support frame 5. The first motor 7 is connected to a first threaded rod 8 via a transmission structure. When the first motor 7 is started, it drives the first threaded rod 8 to rotate via the transmission structure. A second slider is fitted onto the first threaded rod 8. The second slider has a threaded hole that meshes with the first threaded rod 8. The second slider is fixedly connected to a slide plate 9. Rotation of the first threaded rod 8 causes the second slider to move the slide plate 9 along the direction of the first threaded rod 8. A hydraulic motor 10 is mounted on the slide plate 9. The hydraulic motor 10 is connected to the drill rod 11 and can drive the drill rod 11 to rotate. The hydraulic motor 10 is connected to a hydraulic unloading device. When the system pressure exceeds the set value, the unloading overflow valve opens, and the hydraulic oil returns directly to the oil tank. When the drill rod 11 is stuck or overloaded, the hydraulic unloading device automatically relieves pressure to prevent the hydraulic motor 10 from burning out.

[0034] The second guiding device includes a second guide rod 21. One end of the second guide rod 21 is fixedly connected to the rotating ball 19, and the other end is equipped with a retaining ring 24. A guide sleeve 22 is fitted onto the second guide rod 21. The retaining ring 24 can limit the guide sleeve 22 to prevent it from falling off the second guide rod 21. The outer side of the guide sleeve 22 is evenly distributed with sliding grooves, and a first slider 26 is provided in the sliding groove. The first slider 26 is hinged to the first hydraulic cylinder 23. The extension and retraction of the first hydraulic cylinder 23 at different positions can cause the second guide rod 21 to tilt in different directions.

[0035] The top of the rotating ball 19 is provided with a first mounting groove 20, and the roller cone drill bit 15 is threadedly connected to the first mounting groove 20, so that the roller cone drill bit 15 can change the drilling direction as the rotating ball 19 rotates. The rotating ball 19 is connected to the reaming drill bit 16, which is provided with a second mounting groove 25. The top of the second mounting groove 25 mates with the rotating ball 19, allowing the rotating ball 19 to rotate within the second mounting groove 25, thereby changing the direction of the roller cone drill bit 15. The first hydraulic cylinder 23 is hinged and installed within the second mounting groove 25. When the extension and retraction of the first hydraulic cylinder 23 at different positions are different, the second guide rod 21 can be offset to different directions.

[0036] The reaming bit 16 is connected to the drill rod 11. Rotation of the drill rod 11 causes the reaming bit 16 and the roller cone bit 15 to rotate, thus achieving drilling. The reaming bit 16 is evenly distributed with slag discharge grooves 18 and teeth 17. The slag discharge grooves 18 are spiral-shaped. The teeth 17 include flat teeth and pointed teeth. The teeth 17 can enlarge the hole drilled by the roller cone bit 15. The pointed teeth are used to impact and break hard rocks, and the flat teeth are used to cut soft rocks. The slag discharge grooves 18 can discharge the broken rocks along the grooves to avoid blockage affecting the drilling progress.

[0037] A hinge block is fixedly connected to the middle of the support frame 5. The top of the hinge block is hinged to the second hydraulic cylinder 3, the middle of the hinge block is hinged to the first connecting rod 2, and the bottom of the first connecting rod 2 near the hinge block is hinged to the third hydraulic cylinder 4. The second hydraulic cylinder 3 is hinged to the first connecting rod 2, and both the first connecting rod 2 and the third hydraulic cylinder 4 are hinged to the support block 1. The support block 1 is fixedly mounted on the vehicle body. The extension and retraction of the second hydraulic cylinder 3 can adjust the angle between the support frame 5 and the first connecting rod 2, and the extension and retraction of the third hydraulic cylinder 4 can adjust the angle between the first connecting rod 2 and the support block 1, thereby adjusting the initial drilling angle of the drilling rig.

[0038] The support frame 5 is equipped with a U-shaped support leg 6 at its bottom, which supports the support frame 5 and enhances the drilling rig's anti-overturning ability. A laser positioning device is installed at the center of the bottom of the U-shaped support leg. The laser positioning device is connected to the control system, which can control the movement of the vehicle body based on the data detected by the laser positioning device to achieve precise positioning and avoid errors caused by manual positioning. A dust collection hood 13 is installed at the end of the first guide rod 12. A dust suction pipe 14 is installed on the side wall of the dust collection hood 13 and is connected to the dust collection box 27. The dust collection hood 13 can be connected to the dust collection box 27 through the dust suction pipe 14 to collect the discharged rock debris, avoid dust, and improve the working environment.

[0039] The dust collection box 27 is connected to the negative pressure fan 35. The negative pressure fan 35 creates a negative pressure environment inside the dust collection box 27, thereby drawing the rock debris generated during drilling into the dust collection box 27 through the dust collection hood 13 and the suction pipe 14. A water mist spraying system 28 is installed on the top of the inner wall of the dust collection box 27. When the fine water droplets sprayed by the water mist spraying system 28 come into contact with the dust particles in the dust collection box 27, the dust adheres to the surface of the water droplets through inertial collision, interception, and agglomeration, forming larger particle clusters, thereby accelerating the dust settling.

[0040] A second motor 29 is installed inside the side wall of the dust collection box 27. The second motor 29 is connected to the transmission rod 30, and two turbines 31 are installed on the transmission rod 30. Both turbines 31 mesh with worm gears 32, and both worm gears 32 are fixedly connected to the second threaded rod 33. When the second motor 29 is started, it drives the turbines 31 to rotate. The turbines 31, through meshing with the worm gears 32, drive the worm gears 32 to rotate, thereby causing the second threaded rod 33 to rotate.

[0041] A scraper 34 is mounted on the second threaded rod 33. The scraper 34 has a threaded hole that mates with the second threaded rod 33. Rotation of the second threaded rod 33 causes the scraper 34 to move along the direction of the second threaded rod 33. Weight sensors are arrayed inside the bottom plate of the dust collection box 27. A door 36 is opened on the side wall of the dust collection box 27 away from the second motor 29. The weight sensors interact with the control system, and the second motor 29 is connected to the control system. When the data detected by the weight sensors exceeds a set threshold, the control system controls the second motor 29 to start, causing the scraper 34 to push the deposited rock debris inside the dust collection box 27 out through the door 36.

[0042] The roller cone drill bit 15 is equipped with an inclination sensor and an azimuth sensor. These sensors interact with the control system, detecting the inclination and azimuth angles of the drill bit 15 and transmitting the measured data to the control system. The control system is connected to the first hydraulic cylinder 23, the second hydraulic cylinder 3, the third hydraulic cylinder 4, the first motor 7, and the hydraulic motor 10. The control system can control the second hydraulic cylinder 3, the third hydraulic cylinder 4, the first motor 7, and the hydraulic motor 10, and adjust the extension and retraction length of the first hydraulic cylinder 23 at different positions based on the measured inclination and azimuth angle data. This changes the drilling angle of the roller cone drill bit 15, corrects its deviation, and prevents changes in drilling direction due to uneven rock properties.

[0043] The formula for calculating the correction angle is as follows:

[0044]

[0045] Where Δθ is the correction angle, Δθ v Δθ is the difference between the measured tilt angle and the design tilt angle.h This is the azimuth deviation angle.

[0046] The azimuth deviation must first be converted into a plane angle difference. The calculation formula is as follows:

[0047]

[0048] Where ΔY is the deviation of the horizontal projection onto the Y-axis, and ΔX is the deviation of the horizontal projection onto the X-axis.

[0049] When using the mining drilling rig with a drilling direction guidance device provided by this invention, the second hydraulic cylinder 3 and the third hydraulic cylinder 4 are adjusted according to the data detected by the laser positioning device, so that the roller cone drill bit 15 is placed at a predetermined angle and position. The first motor 7 and the hydraulic motor 10 are started to make the roller cone drill bit 15 drill. During the drilling process, the guide ball inside the first guide rod 12 contacts the drill rod 11. The guide ball significantly reduces the resistance of the drill rod 11 during feeding through rolling friction, and at the same time constrains the axial direction of the drill rod 11, reducing drilling deviation. The control system controls the first hydraulic cylinder 23 at different positions to extend and retract to different lengths according to the data measured by the tilt sensor and the azimuth sensor, so that the second guide rod 21 deflects at different angles, thereby correcting the roller cone drill bit 15 and making the roller cone drill bit 15 drill at the predetermined angle. This avoids the lateral extrusion force generated at the interface between soft and hard rock or the stress concentration at the fracture, which would disrupt the force balance of the roller cone drill bit 15 and cause drilling deviation.

[0050] During drilling, the negative pressure fan 35 and the water mist spray system 28 are activated. The negative pressure fan 35 creates a negative pressure environment inside the dust collection box 27, thereby drawing the rock debris generated during drilling into the dust collection box 27 through the dust collection hood 13 and the suction pipe 14. When the fine water droplets sprayed by the water mist spray system 28 come into contact with the dust particles inside the dust collection box 27, they cause the dust to adhere to the surface of the water droplets through inertial collision, interception, and agglomeration, forming larger particle clusters, thus accelerating dust settling. When the data detected by the weight sensor inside the bottom plate of the dust collection box 27 exceeds the set threshold, the control system controls the second motor 29 to start, causing the scraper 34 to push the deposited rock debris inside the dust collection box 27 out of the box door 36.

[0051] When the fiber optic torque sensor detects that the drill rod 11 is stuck or overloaded, the control system controls the hydraulic unloading device to unload the load and prevent the drill rod 11 from breaking.

[0052] Therefore, this invention employs a mining drilling rig with a drilling direction guidance device, comprising a first direction guidance device and a second direction guidance device to guide the drilling direction. The guide beads on the inner wall of the first guide rod significantly reduce the resistance during drill rod feed through rolling friction, while simultaneously constraining the drill rod axis direction and reducing drilling deviation. The second direction guidance device corrects the drilling direction of the roller cone drill bit by changing the extension and retraction of the first hydraulic cylinder at different positions, reducing the drilling deviation rate. The second and third hydraulic cylinders can adjust the initial drilling angle of the drilling rig, and the laser positioning device ensures that the drill bit stays within the specified range. Drilling is performed at a fixed location to enhance environmental adaptability and reduce errors caused by manual positioning; a spiral-shaped slag discharge chute can reduce drill jamming caused by rock debris accumulation; dust hoods and dust collection boxes prevent dust from being stirred up, and the water mist spray system in the dust collection box can cause dust particles to adhere to the surface of water droplets through inertial collision, interception, and agglomeration, forming larger particle clusters, thereby accelerating dust settling and improving the working environment; a fiber optic torque sensor and a hydraulic unloading device are installed, which can unload the hydraulic motor when the fiber optic torque sensor detects abnormal data, preventing drill rod breakage.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A mine drilling rig having a borehole direction guiding device, characterized in that: The device includes a first guiding device and a second guiding device. The first guiding device includes a first guiding rod, on the inner wall of which an optical fiber torque sensor and a guide bead are installed. The second guiding device includes a second guiding rod, one end of which is fixedly connected to a rotating ball, and the other end of which is fitted with a retaining ring. A guide sleeve is fitted on the second guiding rod, and grooves are evenly distributed on the outer side of the guide sleeve. A first slider is provided in the groove, and the first slider is hinged to a first hydraulic cylinder. The first guide rod is fixedly installed on the support frame. The top of the support frame is equipped with a first motor. The first motor is connected to the first threaded rod through a transmission structure. A second slider is sleeved on the first threaded rod. The second slider has a threaded hole that meshes with the first threaded rod. The second slider is fixedly connected to the slide plate. A hydraulic motor is installed on the slide plate. The hydraulic motor is connected to the drill rod. The drill rod and the first guide rod are coaxially arranged. The hydraulic motor is connected to the hydraulic unloading device. The top of the rotating ball is provided with a first mounting groove, the roller cone drill bit is threadedly connected to the first mounting groove, the rotating ball is connected to the reaming drill bit, the reaming drill bit is provided with a second mounting groove, the top of the second mounting groove is engaged with the rotating ball, and the first hydraulic cylinder is hingedly installed in the second mounting groove. The reaming drill bit is connected to the drill rod. The reaming drill bit is evenly distributed with slag discharge grooves and teeth. The slag discharge grooves are spiral-shaped, and the teeth include flat teeth and pointed teeth. A hinge block is fixedly connected to the middle of the support frame. The top of the hinge block is hinged to the second hydraulic cylinder, the middle of the hinge block is hinged to the first connecting rod, the bottom of the first connecting rod near the hinge block is hinged to the third hydraulic cylinder, the second hydraulic cylinder is hinged to the first connecting rod, and both the first connecting rod and the third hydraulic cylinder are hinged to the support block. The support block is fixedly installed on the vehicle body.

2. A mine drilling rig having a borehole direction guide according to claim 1, characterised in that: The support frame has U-shaped support legs at the bottom, and a laser positioning device is installed at the center of the bottom of the U-shaped support legs.

3. A mine drilling rig having a borehole direction guide according to claim 2, characterised in that: A dust collection hood is installed at the end of the first guide rod. The dust collection hood is a telescopic structure. A suction pipe is installed on the side wall of the dust collection hood and is connected to the dust collection box. The dust collection box is connected to a negative pressure fan. A water mist spraying system is installed on the top of the inner wall of the dust collection box. A second motor is installed inside the side wall of the dust collection box and is connected to a transmission rod. Two turbines are installed on the transmission rod. Both turbines mesh with worm gears. Both worm gears are fixedly connected to a second threaded rod. A scraper is installed on the second threaded rod and has threaded holes that mate with the second threaded rod. Weight sensors are arrayed inside the bottom plate of the dust collection box. A door is opened on the side wall of the dust collection box away from the second motor.

4. A mine drilling rig having a borehole direction guide according to claim 3, characterised in that: The roller cone drill bit is equipped with an inclination sensor and an azimuth sensor. The laser positioning device, fiber optic torque sensor, weight sensor, inclination sensor and azimuth sensor interact with the control system. The control system is connected to the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder, the first motor, the hydraulic unloading device, the second motor and the hydraulic motor.

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