Coal mine geological drilling device with deviation prevention function

Abstract

This invention discloses a coal mine geological drilling device with anti-deviation function, belonging to the field of geological drilling technology. The coal mine geological drilling device includes a support base, drill rod, outriggers, a drive assembly, a first anti-deviation assembly, and a second anti-deviation assembly. A limit seat is provided on the support base, and the top of the outriggers has a boss. The drive assembly includes a hydraulic rod, a connecting plate, and a motor. The first anti-deviation assembly includes a first wedge, a first spring, and a fixing block. The second anti-deviation assembly includes a cylinder, a pressure plate, multiple second wedges, multiple inserts, and multiple second springs, all located within a cavity. This invention provides a coal mine geological drilling device with anti-deviation function, which can prevent horizontal deviation during drilling operation and vertical deviation, ensuring drilling accuracy and work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of geological drilling technology, specifically relating to a coal mine geological drilling device with anti-deviation function. Background Technology

[0002] A coal mine is an area where humans extract coal resources in coal-rich areas. They are generally divided into underground coal mines and open-pit coal mines. When the coal seam is far from the surface, underground tunnels are typically dug to extract the coal; this is an underground coal mine. When the coal seam is very close to the surface, the surface soil is typically stripped away to extract the coal; this is an open-pit coal mine. Drilling or exploration utilizes deep drilling mechanical engineering techniques to extract coal resources, or to obtain geological profiles and samples for experiments to obtain relevant data.

[0003] However, during drilling, the rotation and lifting of the drill rod in coal mine geological drilling equipment will generate vibration or displacement, which makes the drilling equipment prone to vertical and horizontal deviations during operation, thus affecting the working efficiency and drilling accuracy of the drill rod. Summary of the Invention

[0004] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a coal mine geological drilling device with anti-deviation function. Its purpose is to prevent not only horizontal deviation of the drilling device during operation, but also vertical deviation of the drilling device during operation, thereby ensuring the drilling accuracy and working efficiency of the drill rod.

[0005] To achieve the above objectives, the present invention provides a coal mine geological drilling device with anti-deviation function, the coal mine geological drilling device including a support base, drill rod, outriggers, drive assembly, first anti-deviation assembly and second anti-deviation assembly; The support base is provided with a limiting seat, the support leg is slidably inserted into the limiting seat in the vertical direction, and the top of the support leg has a boss for contacting and limiting the limiting seat, and the support leg has a cavity inside. The drive assembly includes hydraulic rods, a connecting plate, and a motor. A plurality of hydraulic rods are spaced apart on the support base, and the top end of each hydraulic rod is connected to the connecting plate. The motor is located on the connecting plate, and the output shaft of the motor is connected to the drill rod for transmission. The drill rod passes vertically through the connecting plate and the support base. The first anti-deviation component includes a first wedge, a first spring, and a fixing block. The first wedge and the fixing block are both located on the bottom surface of the connecting plate. The first spring is sandwiched between the first wedge and the fixing block. The first wedge is slidably arranged. The inclined surface of the first wedge abuts against the boss. When the boss contacts the limiting seat, the first wedge is located on one side of the boss. The second anti-deviation assembly includes a cylinder, a pressure plate, multiple second wedges, multiple inserts, and multiple second springs. The cylinder, the pressure plate, the multiple second wedges, and the multiple second springs are all located in the cavity. The piston rod of the cylinder is driven to the pressure plate to drive the pressure plate to rise and fall. The inclined surface of each second wedge is in contact with the pressure plate. Each second wedge is slidably arranged in the cavity in the horizontal direction and fixedly connected to the corresponding insert to drive one end of the insert to extend horizontally out of the outer peripheral wall of the drill rod. The second spring is clamped between the corresponding second wedge and the corresponding inner wall of the cavity.

[0006] Optionally, a rotatable roller is provided on the boss, and the roller contacts the inclined surface of the first wedge block.

[0007] Optionally, both sides of the bottom of the first wedge block have rounded corners.

[0008] Optionally, the limiting seat includes a limiting plate and two support plates, the limiting plate and the two support plates are arranged in a U-shape, and the limiting plate is parallel and spaced apart from the support seat.

[0009] Optionally, a third spring is fitted at the top of the support leg, and the third spring is sandwiched between the boss and the limiting plate.

[0010] Optionally, a rotatable roller is provided on the bottom surface of the pressure plate, and the roller contacts the inclined surface of the second wedge block.

[0011] Optionally, there are multiple support legs, multiple limiting seats, multiple first anti-deviation components and multiple second anti-deviation components, and each of the multiple support legs, multiple limiting seats, multiple first anti-deviation components and multiple second anti-deviation components corresponds to one another.

[0012] Optionally, the drill rod is provided with a cavity, a water guide hole, and a water inlet. The cavity is used to fill cooling water. The diameter of the water guide hole is smaller than the diameter of the cavity. The water guide hole is located below the cavity. The bottom end of the water guide hole penetrates through the bottom of the drill rod. A shut-off valve is provided on the water inlet. The water inlet is connected to the cavity.

[0013] Optionally, the bottom of the support base has a plurality of spaced-apart wheels.

[0014] Optionally, a connecting frame is provided on the side of the support base, and a handle is provided on the connecting frame.

[0015] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0016] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: In the coal mine geological drilling device with anti-deviation function provided in this embodiment of the invention, during coal mine geological drilling, the drive assembly is first activated, and the hydraulic rod drives the connecting plate, motor, and drill rod to move downwards. The motor then synchronously drives the drill rod to rotate, thereby realizing drilling. At the same time, the connecting plate drives the first wedge block to move downwards. During the downward movement of the first wedge block, it squeezes the boss, causing the boss and the support leg to move vertically downwards (while the first wedge block overcomes the elastic force of the first spring and moves horizontally relative to the boss). This ultimately allows the support leg to be vertically inserted into the coal mine geology, thereby achieving horizontal positioning of the drilling device, preventing horizontal deviation during the operation of the drilling device, and ensuring the drilling accuracy of the drill rod. When the boss contacts the limiting seat, the outrigger completes its vertical descent (i.e., vertical insertion and positioning are completed). At this time, the first wedge block moves to one side of the boss. After that, when the drill rod continues to move down for drilling, the first wedge block will no longer squeeze the boss and the outrigger to move down, thus avoiding the problem of the outrigger being squeezed down and causing the hydraulic rod to become less efficient (it can also avoid the outrigger being inserted too deeply, which would be not conducive to subsequent extraction).

[0017] Furthermore, when the boss contacts the limiting seat, the cylinder drives the pressure plate to move down. The pressure plate then overcomes the elastic force of the second spring and presses down on multiple second inclined wedges, causing multiple inserts to move horizontally outward and insert into the coal mine geology. This ultimately achieves vertical positioning of the drilling device, preventing vertical displacement during the operation of the drilling device (i.e., the device will not move upward during operation, thus preventing the drill rod from spinning idly), and improving the working efficiency of the drill rod.

[0018] In other words, the coal mine geological drilling device with anti-deviation function provided by the embodiments of the present invention can not only prevent the horizontal deviation of the drilling device during operation, but also prevent the vertical deviation of the drilling device during operation, thus ensuring the drilling accuracy and working efficiency of the drill rod. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a coal mine geological drilling device with anti-deviation function provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the support leg provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the drill pipe provided in an embodiment of the present invention; Figure 4 yes Figure 3 First enlarged view of the area; Figure 5 yes Figure 3 The second enlarged view of the area.

[0020] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Support base; 11. Limiting seat; 111. Limiting plate; 112. Support plate; 12. Boss; 13. Traveling wheel; 14. Connecting frame; 15. Handle; 2. Drill rod; 21. Water guide hole; 22. Water inlet; 23. Mounting hole; 24. First chamber; 25. Second chamber; 26. Third chamber; 3. Outrigger; 31. Third spring; 4. Drive assembly; 41. Hydraulic rod; 42. Connecting plate; 43. Motor; 5. First anti-deviation assembly; 51. First inclined plate 52. Wedge block; 53. First spring; 54. Fixing block; 6. Second anti-deviation assembly; 65. Cylinder; 66. Pressure plate; 67. Second inclined wedge block; 68. Insert plate; 69. Second spring; 70. Energy storage assembly; 71. First movable plate; 72. Second movable plate; 73. Centrifugal drive module; 74. Inclined wedge block; 75. Slider; 86. Fourth spring; 87. Sealing assembly; 88. Block; 89. Fifth spring; 80. Sealing plate; 81. Counterweight ball; 82. Set screw. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] Example: Figure 1 This is a schematic diagram of the structure of a coal mine geological drilling device with anti-deviation function provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the coal mine geological drilling device includes a support base 1, a drill rod 2, outriggers 3, a drive assembly 4, a first anti-deviation assembly 5, and a second anti-deviation assembly 6.

[0027] The support base 1 is provided with a limiting seat 11, the support leg 3 is slidably inserted into the limiting seat 11 in the vertical direction, and the top of the support leg 3 has a boss 12 for contacting and limiting the limiting seat 11, and the support leg 3 has a cavity inside.

[0028] The drive assembly 4 includes hydraulic rods 41, connecting plate 42 and motor 43. Multiple hydraulic rods 41 are spaced apart on the support base 1, and the top of each hydraulic rod 41 is connected to the connecting plate 42. The motor 43 is located on the connecting plate 42, and the output shaft of the motor 43 is connected to the drill rod 2 for transmission. The drill rod 2 passes vertically through the connecting plate 42 and the support base 1.

[0029] The first anti-deviation component 5 includes a first wedge block 51, a first spring 52, and a fixing block 53. The first wedge block 51 and the fixing block 53 are both located on the bottom surface of the connecting plate 42. The first spring 52 is sandwiched between the first wedge block 51 and the fixing block 53. The first wedge block 51 is slidably arranged. The inclined surface of the first wedge block 51 abuts against the boss 12. When the boss 12 contacts the limiting seat 11, the first wedge block 51 is located on one side of the boss 12 (i.e., the horizontal side, at which time the inclined surface of the first wedge block 51 no longer abuts against the boss 12).

[0030] Figure 2 This is a cross-sectional view of the support leg provided in an embodiment of the present invention, such as... Figure 2 As shown, the second anti-deviation assembly 6 includes a cylinder 61, a pressure plate 62, multiple second wedges 63, multiple inserts 64, and multiple second springs 65. The cylinder 61, pressure plate 62, multiple second wedges 63, and multiple second springs 65 are all located in the cavity. The piston rod of the cylinder 61 is connected to the pressure plate 62 to drive the pressure plate 62 to rise and fall. The inclined surfaces of each second wedge 63 are in contact with the pressure plate 62. Each second wedge 63 is slidably arranged in the cavity in the horizontal direction and is fixedly connected to the corresponding insert 64 to drive one end of the insert 64 to extend horizontally out of the outer peripheral wall of the drill rod 2. The second springs 65 are clamped between the corresponding second wedge 63 and the corresponding inner wall of the cavity.

[0031] In the coal mine geological drilling device with anti-deviation function provided in this embodiment of the invention, during coal mine geological drilling, the drive component 4 is first activated, and the hydraulic rod 41 drives the connecting plate 42, the motor 43, and the drill rod 2 to move downward. The motor 43 then synchronously drives the drill rod 2 to rotate, thereby realizing drilling. At the same time, the connecting plate 42 drives the first wedge block 51 to move downward. During the downward movement of the first wedge block 51, it squeezes the boss 12, causing the boss 12 and the support leg 3 to move vertically downward (while the first wedge block 51 overcomes the elastic force of the first spring 52 and moves horizontally relative to the boss 12). This ultimately allows the support leg 3 to be vertically inserted into the coal mine geology, thereby achieving horizontal positioning of the drilling device, preventing horizontal deviation during the operation of the drilling device, and ensuring the drilling accuracy of the drill rod 2. When the boss 12 contacts the limiting seat 11, the support leg 3 completes its vertical descent (i.e., vertical insertion and positioning is completed). At this time, the first wedge block 51 moves to one side of the boss 12. After that, when the drill rod 2 continues to move down for drilling, the first wedge block 51 will no longer squeeze the boss 12 and the support leg 3 to move down, thus avoiding the problem of the support leg 3 being squeezed down and causing the efficiency of the hydraulic rod 41 to decrease (it can also avoid the support leg 3 being inserted too deeply, which is not conducive to subsequent extraction).

[0032] Furthermore, when the boss 12 contacts the limiting seat 11, the cylinder 61 drives the pressure plate 62 to move downward. The pressure plate 62 then overcomes the elastic force of the second spring 65 and presses down on multiple second inclined wedges 63, causing multiple inserts 64 to move horizontally outward and insert into the coal mine geology. This ultimately achieves vertical positioning of the drilling device, preventing vertical displacement during the operation of the drilling device (i.e., the device will not move upward during operation, thus preventing the drill rod 2 from spinning idly), and improving the working efficiency of the drill rod 2.

[0033] In other words, the coal mine geological drilling device with anti-deviation function provided by the embodiments of the present invention can not only prevent the horizontal deviation of the drilling device during operation, but also prevent the vertical deviation of the drilling device during operation, thus ensuring the drilling accuracy and working efficiency of the drill rod 2.

[0034] For example, the support leg 3 has an upper-facing socket, and the insert 64 is movably inserted into the corresponding socket.

[0035] It is easy to understand that after drilling is completed, cylinder 61 will drive pressure plate 62 to move upward, and second spring 65 will drive second wedge block 63 to return to horizontal position, thereby completing the retraction and reset of insert 64. Afterward, drive assembly 4 will drive drill rod to move upward, and first spring 52 will drive first wedge block 51 to return to horizontal position on connecting plate 42, so that first wedge block 51 moves to face boss 12. Then, outrigger 3 is pulled out, thus preparing outrigger 3 for the next operation.

[0036] Specifically, there are multiple support legs 3, limiting seats 11, first anti-deviation components 5, and second anti-deviation components 6, with each of the multiple support legs 3, multiple limiting seats 11, multiple first anti-deviation components 5, and multiple second anti-deviation components 6 corresponding one-to-one. Preferably, there are four support legs 3, four limiting seats 11, four first anti-deviation components 5, and four second anti-deviation components 6, which are evenly spaced.

[0037] See also Figure 1 The bottom of the support base 1 has multiple spaced-apart wheels 13, which facilitates the transfer of the coal mine geological drilling equipment.

[0038] Furthermore, a connecting frame 14 is provided on the side of the support base 1, and a handle 15 is provided on the connecting frame 14 to facilitate the movement of the coal mine geological drilling device.

[0039] For example, the handle 15 has anti-slip threads.

[0040] In one implementation of the present invention, a rotatable roller is provided on the boss 12, and the roller contacts the inclined surface of the first wedge block 51, thereby reducing the friction between the boss 12 and the first wedge block 51.

[0041] In addition, both sides of the bottom of the first wedge block 51 are rounded to prevent the right-angled edge of the first wedge block 51 from damaging the roller when the first wedge block 51 moves to one side of the boss 12.

[0042] Similarly, a rotatable roller is provided on the bottom surface of the pressure plate 62, and the roller contacts the inclined surface of the second wedge block 63.

[0043] It should be noted that the bottom of the cavity has a horizontal slide rail, which facilitates the horizontal sliding of the second wedge block 63.

[0044] In this embodiment, the limiting seat 11 includes a limiting plate 111 and two support plates 112. The limiting plate 111 and the two support plates 112 are arranged in a U-shape, and the limiting plate 111 is parallel and spaced apart from the support seat 1. The two support plates 112 can raise the limiting plate 111, allowing for faster limiting of the boss 12 during downward movement. Furthermore, the U-shaped arrangement of the limiting plate 111 and the two support plates 112 provides structural stability and more stable sliding support for the support leg 3.

[0045] For example, the top of the support leg 3 is slidably engaged with the limiting plate 111, and the bottom of the support leg 3 is slidably engaged with the support base 1.

[0046] Furthermore, a third spring 31 is fitted onto the top of the support leg 3, and the third spring 31 is sandwiched between the boss 12 and the limiting plate 111.

[0047] It is easy to understand that after drilling is completed and multiple inserts 64 are retrieved and the first wedge block 51 is reset, the third spring 31 will exert an upward force on the boss 12 and the support leg 3, making it easier to pull out the support leg 3 in the subsequent process.

[0048] In this embodiment, the drill rod 2 is provided with a cavity, a water guide hole 21 and a water inlet 22. The cavity is used to fill cooling water. The diameter of the water guide hole 21 is smaller than the diameter of the cavity. The water guide hole 21 is located below the cavity. The bottom end of the water guide hole 21 penetrates the bottom of the drill rod 2. A shut-off valve is provided on the water inlet 22. The water inlet 22 is connected to the cavity.

[0049] In the above embodiment, the water inlet 22 can store water in the cavity when the drill rod 2 is not started, and the cooling water can flow out during subsequent drilling to cool the drill rod 2 and wet the coal mine geology.

[0050] Specifically, Figure 3 This is a cross-sectional view of the drill pipe provided in an embodiment of the present invention. Figure 4 yes Figure 3 The first enlarged partial image, combined with Figure 3 and Figure 4 As shown, the drill rod 2 is provided with a cavity, a water guide hole 21, a water inlet 22 and a mounting hole 23. The diameter of the water guide hole 21 is smaller than the diameter of the cavity. The water guide hole 21 is located below the cavity. The bottom end of the water guide hole 21 penetrates the bottom of the drill rod 2. A shut-off valve is provided on the water inlet 22 (that is, the shut-off valve controls the opening and closing of the water inlet 22). The mounting hole 23 is connected to the water guide hole 21.

[0051] The drill pipe 2 is equipped with an energy storage assembly 7 and a sealing assembly 8. The energy storage assembly 7 includes a first movable plate 71, a second movable plate 72, at least two centrifugal drive modules 73, and multiple fourth springs 74. The first movable plate 71 and the second movable plate 72 are slidably inserted into the cavity in the vertical direction and are horizontally spaced to divide the cavity into a first chamber 24, a second chamber 25, and a third chamber 26 in sequence. The two centrifugal drive modules 73 are symmetrically arranged along the axis of the drill pipe 2, and each centrifugal drive module 73 includes a wedge block. 731 and slider 732 are arranged in the first chamber 24. The wedge block 731 is slidable horizontally in the first chamber 24, and the slider 732 is slidable vertically in the first chamber 24. The bottom of the slider 732 is connected to the first movable plate 71. The inclined surface of the wedge block 731 abuts against the slider 732 to drive the slider 732 to move downward. Multiple fourth springs 74 are located in the second chamber 25 and sandwiched between the first movable plate 71 and the second movable plate 72. The top ends of the water inlet 22 and the water guide hole 21 are connected to the third chamber 26. The sealing component 8 is located in the mounting hole 23 and is used to control the opening and closing of the water guide hole 21.

[0052] Before use, firstly, release the seal of the shut-off valve on the inlet 22 and add cooling water to the third chamber 26 through the inlet 22. As the cooling water is gradually added, the amount of cooling water in the third chamber 26 gradually increases, causing the second movable plate 72 to move upwards and the fourth spring 74 to be compressed. The slider 732 and the first movable plate 71 also move upwards, causing the two wedge blocks 731 to move closer to the axis of the drill rod 2. At this time, the sealing assembly 8 seals the guide hole 21, preventing cooling water from flowing out. Then, the shut-off valve seals the inlet 22, finally completing the water storage in the third chamber 26 (at this point, the space corresponding to the third chamber 26 is at its maximum, with a large water storage capacity) and the energy storage of the fourth spring 74.

[0053] When coal mine geological drilling is required, the drive assembly 4 is activated, causing the drill rod 2 to accelerate and rotate while moving downward relative to the support seat 1. At this time, the sealing assembly 8 releases the seal on the water guide hole 21. Because the seal on the water guide hole 21 is released, the fourth spring 74 extends and pushes the second movable plate 72 downward, allowing cooling water to flow out of the water guide hole 21 at a higher pressure. This prevents impurities from clogging the water guide hole 21 during drilling, while also achieving impact and thorough wetting of the rock or other harder geological formations, thereby improving drilling efficiency. Furthermore, this process cools the drill rod 2, extending its service life. Simultaneously, as the drill rod 2 accelerates to high speed, the wedge block 731 moves horizontally outward to generate centrifugal force. During this horizontal outward movement, the pusher block 732 and the first movable plate 71 move downward, compressing the fourth spring 74 and compensating for the lost elastic potential energy. This ensures that the fourth spring 74 always has a large elastic potential energy to act on the cooling water, thus ensuring that the cooling water always flows out of the water guide hole 21 at a higher pressure.

[0054] In other words, the drill rod 2 provided in this embodiment of the invention can allow cooling water to flow out at a higher pressure during coal mine geological drilling, thereby avoiding the situation where impurities block the water guide hole 21 during the drilling process, improving drilling efficiency and extending the service life of the drill rod 2.

[0055] It is easy to understand that when cooling water flows out of the guide hole 21 at high pressure, the high-pressure cooling water easily washes away impurities in the guide hole 21, keeping it unobstructed. Furthermore, the high-pressure water has a strong impact force and a large flow rate, resulting in better wetting of rocks or other harder geological formations and better cooling of the drill rod 2. In addition, this coal mine geological drilling device can easily complete water and energy storage before rotation and drain water during high-speed rotation, avoiding the problem of directly supplying and draining water to the drill rod 2 during rotation.

[0056] For example, the slider 732 is provided with rotatably arranged ball bearings, thereby reducing the friction between it and the inclined surface. In addition, the inner wall of the first chamber 24 is provided with a horizontal slide rail and a vertical slide rail, wherein the wedge block 731 slides with the horizontal slide rail and the slider 732 slides with the vertical slide rail.

[0057] In this embodiment, the water guide hole 21 includes a central section and multiple branch sections. The central section is coaxial with the axis of the drill rod 2, and both ends of the central section are connected to the third chamber 26 and the top ends of each branch section, respectively. The bottom ends of each branch section penetrate the bottom of the drill rod 2. The multiple branch sections can increase the outlet area and wetting area of ​​the cooling water, resulting in better cooling of the drill rod 2, especially its ends, and better wetting of the coal seam geology.

[0058] For example, multiple branch segments are arranged at circumferential intervals along the central segment and form a certain angle with the central segment.

[0059] In addition, sealing rings are fitted on the outer peripheral walls of the first movable plate 71 and the second movable plate 72 to prevent cooling water leakage during the sliding of the movable plates.

[0060] In one implementation of the present invention Figure 5 yes Figure 3 The second enlarged view, as shown Figure 5 As shown, the sealing assembly 8 includes a plug 81, a fifth spring 82, a sealing plate 83, and a counterweight ball 84 (with a relatively large mass). The plug 81 is inserted into the mounting hole 23, the fifth spring 82 is clamped between the plug 81 and the sealing plate 83, and the counterweight ball 84 is located on the sealing plate 83. The sealing plate 83 is slidably arranged in the mounting hole 23. The drill rod 2 is configured such that when the drill rod 2 is not rotated, the sealing plate 83 seals the water guide hole 21; when the drill rod 2 rotates, the sealing plate 83 moves away from the water guide hole 21 to release the seal on the water guide hole 21.

[0061] It is easy to understand that when the drill rod 2 is not rotating, the fifth spring 82 remains in its natural state (or slightly compressed), and the sealing plate 83 maintains the seal on the water guide hole 21. When the drill rod 2 rotates, the counterweight ball 84 continues to rotate and moves outward, causing the fifth spring 82 to compress (the elasticity of the fifth spring 82 provides centrifugal force for the counterweight ball 84 during rotation), thereby automatically moving the sealing plate 83 outward, ultimately automatically releasing the seal on the water guide hole 21. When the drill rod 2 stops rotating, the fifth spring 82 pushes the automatic sealing plate 83 to reset, thus sealing the water guide hole 21, at which point water can be stored in the third chamber 26.

[0062] In other words, the sealing component 8 can automatically seal and unseal the water guide hole 21, greatly reducing costs and control difficulty.

[0063] For example, the mounting hole is arranged radially, and when the sealing plate seals the water guide hole, the side of the sealing plate facing away from the second spring abuts against the inner wall of the water guide hole.

[0064] Furthermore, the sealing assembly also includes a set screw 85, which is inserted into the plug 81, and one end of the set screw passes through the fifth spring 82 and abuts against the sealing plate 83 so that the sealing plate 83 maintains a seal on the water guide hole.

[0065] It is easy to understand that the set screw can achieve the inner push of the sealing plate, thereby locking the sealing plate outward. At this time, even if the drill pipe rotates, the sealing plate will not move outward, which can be used for coal mine geology with low hardness (that is, there is no need to cool the drill pipe or wet the coal mine geology).

[0066] In addition, the plug can be engaged with the drill pipe thread to adjust the initial spring force.

[0067] In other embodiments of the present invention, the sealing assembly may also employ a drive element (cylinder or linear module) and a plug to control the opening and closing of the water guide hole. Alternatively, the sealing assembly may be directly configured as a valve such as a solenoid valve.

[0068] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A coal mine geological drilling device with anti-deviation function, characterized in that, The coal mine geological drilling device includes a support base, drill rod, outriggers, drive assembly, first anti-deviation assembly, and second anti-deviation assembly. The support base is provided with a limiting seat, the support leg is slidably inserted into the limiting seat in the vertical direction, and the top of the support leg has a boss for contacting and limiting the limiting seat, and the support leg has a cavity inside. The drive assembly includes hydraulic rods, a connecting plate, and a motor. A plurality of hydraulic rods are spaced apart on the support base, and the top end of each hydraulic rod is connected to the connecting plate. The motor is located on the connecting plate, and the output shaft of the motor is connected to the drill rod for transmission. The drill rod passes vertically through the connecting plate and the support base. The first anti-deviation component includes a first wedge, a first spring, and a fixing block. The first wedge and the fixing block are both located on the bottom surface of the connecting plate. The first spring is sandwiched between the first wedge and the fixing block. The first wedge is slidably arranged. The inclined surface of the first wedge abuts against the boss. When the boss contacts the limiting seat, the first wedge is located on one side of the boss. The second anti-deviation assembly includes a cylinder, a pressure plate, multiple second wedges, multiple inserts, and multiple second springs. The cylinder, the pressure plate, the multiple second wedges, and the multiple second springs are all located in the cavity. The piston rod of the cylinder is driven to the pressure plate to drive the pressure plate to rise and fall. The inclined surface of each second wedge is in contact with the pressure plate. Each second wedge is slidably arranged in the cavity in the horizontal direction and fixedly connected to the corresponding insert to drive one end of the insert to extend horizontally out of the outer peripheral wall of the drill rod. The second spring is clamped between the corresponding second wedge and the corresponding inner wall of the cavity.

2. The coal mine geological drilling device with deviation prevention function according to claim 1, characterized in that, A rotatable roller is provided on the boss, and the roller contacts the inclined surface of the first wedge block.

3. The coal mine geological drilling device with deviation prevention function according to claim 2, characterized in that, The bottom two sides of the first wedge block have rounded corners.

4. A coal mine geological drilling device with anti-deviation function according to claim 1, characterized in that, The limiting seat includes a limiting plate and two support plates. The limiting plate and the two support plates are arranged in a U-shape, and the limiting plate is parallel and spaced apart from the support seat.

5. A coal mine geological drilling device with anti-deviation function according to claim 4, characterized in that, A third spring is fitted at the top of the support leg, and the third spring is sandwiched between the boss and the limiting plate.

6. A coal mine geological drilling device with anti-deviation function according to claim 1, characterized in that, The bottom surface of the pressure plate is provided with rotatable rollers, which are in contact with the inclined surface of the second wedge block.

7. A coal mine geological drilling device with anti-deviation function according to claim 1, characterized in that, There are multiple support legs, multiple limit seats, multiple first anti-deviation components and multiple second anti-deviation components, and each of the multiple support legs, multiple limit seats, multiple first anti-deviation components and multiple second anti-deviation components corresponds to one another.

8. A coal mine geological drilling device with anti-deviation function according to any one of claims 1-7, characterized in that, The drill rod is provided with a cavity, a water guide hole and a water inlet. The cavity is used to fill cooling water. The diameter of the water guide hole is smaller than the diameter of the cavity. The water guide hole is located below the cavity. The bottom end of the water guide hole penetrates through the bottom of the drill rod. A shut-off valve is provided on the water inlet. The water inlet is connected to the cavity.

9. A coal mine geological drilling device with anti-deviation function according to any one of claims 1-7, characterized in that, The bottom of the support base has multiple spaced-apart wheels.

10. A coal mine geological drilling device with anti-deviation function according to claim 9, characterized in that, A connecting frame is provided on the side of the support base, and a handle is provided on the connecting frame.

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