A bench drilling device for open pit coal mines

Abstract

The utility model discloses an open -pit coal mine is with stope drilling device belongs to drilling device technical field. Including drilling frame and moving trolley, the bottom end symmetrical installation of drilling frame has moving trolley, the outer wall on drilling frame installs screw rod moving subassembly, the outside of drilling frame of screw rod moving subassembly one side is provided with the lifting frame, and the lifting frame is connected with screw rod moving subassembly, the top end symmetrical installation of lifting frame has the fixed frame, the outer wall on fixed frame all movable mounting has the rotary arm, the outer wall on rotary arm all installs the connecting frame. The utility model not only has realized that drilling device carries out the quick and efficient punching operation to coal mine, has facilitated to the punching angle convenient flexible regulation, has facilitated to the punching position convenient multistage regulation, has increased the range of coal mine punching, and has facilitated the stable fixing of drilling device in the drilling convenient, avoided the deviation of drilling device when punching, influenced the effect of punching.

Description

Technical Field

[0001] This utility model relates to the field of drilling device technology, specifically a drilling device for open-pit coal mines. Background Technology

[0002] Mining is the technology and science of extracting mineral resources from within the Earth's crust and on its surface. In a broader sense, mining also includes the extraction of coal and oil. The mining industry is an important raw material industry; metallic ores are the main raw materials for the smelting industry, while non-metallic ores are important chemical raw materials and building materials. A mine refers to an independent production and management unit with a defined mining boundary for extracting ore. Most mines also include ore dressing plants. During the mining process, drilling equipment is usually used to drill through the geological strata.

[0003] For example, the open-pit mining drilling device disclosed in the authorization announcement number CN223387254U includes a mounting plate, on both sides of which are connected to a first fixing rod. The mounting plate is slidably connected to the first fixing rod. Multiple limiting holes are equally spaced on the first fixing rod, and a locking block is engaged in one of the limiting holes. The locking block is slidably connected to the mounting plate.

[0004] Although it enables the locking block to slide out of the limiting hole when drilling is required in low-lying local areas, allowing the mounting plate to slide downward on the first fixed rod, the mounting plate drives the drill rod to move downward, thereby further extending the drilling depth of the drilling equipment. This facilitates drilling operations in low-lying local areas, making the drilling equipment more flexible and convenient to use, and improving work efficiency.

[0005] However, this does not solve the problem that existing drilling devices of this type are generally not conducive to convenient and rapid drilling operations in coal mines. They are not convenient and flexible in adjusting the drilling angle or the drilling position, which affects the drilling range in coal mines. They are also not convenient and stable in fixing the drilling device during drilling, and the drilling device is prone to displacement during drilling, which affects the drilling effect. Utility Model Content

[0006] The purpose of this utility model is to provide a drilling device for open-pit coal mines, in order to solve the problems mentioned in the background art, such as the inconvenience of drilling devices for convenient and rapid drilling operations in coal mines, the inconvenience of convenient and flexible adjustment of drilling angle, the inconvenience of convenient multi-level adjustment of drilling position, which affects the drilling range in coal mines, the inconvenience of convenient and stable fixing of drilling devices during drilling, and the tendency of drilling devices to deviate during drilling, which affects the drilling effect.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A drilling device for open-pit coal mines includes a drilling frame and a moving trolley. The moving trolley is symmetrically mounted on the bottom end of the drilling frame. A screw moving assembly is mounted on the outer wall of the drilling frame. A lifting frame is provided on the outside of the drilling frame on one side of the screw moving assembly, and the lifting frame is connected to the screw moving assembly. Fixed frames are symmetrically mounted on the top end of the lifting frame. Rotating arms are movably mounted on the outer wall of each fixed frame. Connecting frames are mounted on the outer wall of each rotating arm. Mounting frames are provided on the outside of each connecting frame. A servo motor is mounted on the top end of each mounting frame. A spiral drill head is mounted on the output end of each servo motor. A first electric push rod is mounted on the outer wall of the connecting frame. A drive shaft is mounted on the output end of the first electric push rod. A limit plate is slidably mounted on the outer wall of the connecting frame on one side of the drive shaft. Limit rails are symmetrically mounted on the outer wall of the connecting frame on one side of the limit plate.

[0008] Optionally, limit blocks are slidably installed on the outer wall of the limiting rail near the limiting plate, and the limit blocks are connected to the limiting plate. The first electric push rod is movably connected to the limiting plate via a drive shaft. A flip shaft is movably installed on the outer wall of the limiting plate, and the flip shaft extends to the outside of the connecting frame. A bushing is movably fitted on the surface of the flip shaft, and the bushing is connected to the limiting plate. The flip shaft is also connected to the mounting frame. A sliding groove is provided on the outer wall of the connecting frame on one side of the flip shaft, and the sliding groove is slidably connected to the flip shaft.

[0009] Optionally, a fixing plate is installed on the top of the connecting frame on the side away from the first electric push rod. A limit groove is provided on the outer wall of the fixing plate. A drive block is installed on the end of the flip shaft near the limit groove. A limit wheel is movably installed on the outer wall of the drive block, and the limit wheel is slidably connected to the limit groove.

[0010] Optionally, a second electric push rod is installed at the top of each of the fixed frames, and a transmission is installed at the output end of each of the second electric push rods.

[0011] Optionally, a slider is installed on the top of the fixed frame on one side of the transmission block, and a slide rail is slidably installed on the top of the slider.

[0012] Optionally, a rack is installed at the top of each slide rail, and the transmission block is connected to the rack.

[0013] Optionally, a rotating shaft is movably mounted on the top of the fixing frame on one side of the rack, and the rotating shaft is connected to the rotating arm.

[0014] Optionally, a gear is fitted onto the rotating shaft surface on one side of the rack, and the rack meshes with the gear.

[0015] Optionally, support frames are symmetrically installed on the side wall of the drilling frame. Each support frame has a threaded sleeve installed at its top. A threaded rod is movably installed inside each threaded sleeve, and the threaded rod extends to the outside of the support frame. The threaded sleeve and the threaded rod are threadedly connected. A handwheel is installed at the top of each threaded rod, and a fixing plate is installed at the bottom of each threaded rod on the side away from the handwheel.

[0016] Optionally, a control panel is installed on the side wall of the drilling frame away from the lifting frame, and the output end of the control panel is electrically connected to the input ends of the lead screw moving assembly, the first electric push rod, the servo motor, and the second electric push rod.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the drilling device not only realizes convenient and fast drilling operations in coal mines, but also facilitates convenient and flexible adjustment of the drilling angle and multi-level adjustment of the drilling position, increasing the drilling range in coal mines. In addition, it facilitates convenient and stable fixing of the drilling device during drilling, avoiding deviation of the drilling device during drilling and affecting the drilling effect.

[0018] The first electric push rod drives the limit plate to rotate via the drive shaft. The limit plate drives the tilting shaft to move via the bushing. The tilting shaft drives the drive block to move. The drive block with the limit wheel slides inside the limit groove. The limit wheel drives the drive block to rotate. The drive block drives the tilting shaft to rotate. The tilting shaft drives the mounting frame to rotate. The mounting frame drives the servo motor and the spiral drill head to rotate to a suitable angle. The screw moving assembly drives the lifting frame to move. The lifting frame drives the fixed frame, connecting frame, mounting frame, servo motor, and spiral drill head to move conveniently to the surface of the coal mine that needs to be drilled. Two sets of servo motors drive two sets of spiral drill heads to rotate, so as to facilitate convenient drilling operations of the two sets of spiral drill heads in the coal mine. This realizes convenient and fast drilling operations of the drilling device in the coal mine, facilitates convenient and flexible adjustment of the drilling angle, facilitates two sets of drilling operations at one time, and improves the efficiency of drilling in the coal mine.

[0019] When it is necessary to adjust the drilling position in the coal mine, the second electric push rod drives the rack to move through the transmission block. The rack drives the gear to rotate, the gear drives the rotating shaft to rotate, the rotating shaft drives the rotating arm to rotate, the rotating arm drives the connecting frame to rotate, and the connecting frame drives the mounting frame, servo motor, and spiral drill head to rotate conveniently. This realizes convenient multi-position adjustment of the drilling position in the coal mine, facilitates convenient multi-level adjustment of the drilling position, and increases the drilling range in the coal mine.

[0020] Two sets of handwheels are manually rotated to facilitate the rotation of the threaded rod. The threaded sleeve drives the threaded rod to move, and the threaded rod drives the fixed plate to move to the ground. This allows the two sets of fixed plates to provide stable support for the auger drill head, preventing it from shifting during drilling. This achieves convenient and stable fixing of the drilling device during drilling, avoiding deviation that could affect the drilling effect. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0022] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the flipping shaft of this utility model; Figure 4 This is a three-dimensional structural diagram of the limiting plate of this utility model; Figure 5 This is a three-dimensional structural diagram of the rack of this utility model; Figure 6 This is a three-dimensional structural diagram of the handwheel of this utility model; Figure 7 This is a three-dimensional structural diagram of the connecting frame of this utility model.

[0023] Figure label: 1. Drilling frame; 2. Moving trolley; 3. Lifting frame; 4. Fixed frame; 5. Connecting frame; 6. Mounting frame; 7. Servo motor; 8. Spiral drill head; 9. Support frame; 10. Control panel; 11. First electric push rod; 12. Drive shaft; 13. Limiting plate; 14. Limiting block; 15. Limiting rail; 16. Slide groove; 17. Tilting shaft; 18. Bushing; 19. Fixed plate; 20. Limiting groove; 21. Drive block; 22. Limiting wheel; 23. Second electric push rod; 24. Transmission block; 25. Slider; 26. Rack; 27. Gear; 28. Rotating shaft; 29. ​​Rotating arm; 30. Threaded sleeve; 31. Handwheel; 32. Threaded rod; 33. Fixed plate; 34. Lead screw moving assembly; 35. Slide rail.

[0024] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0025] The following is a detailed description of an open-pit coal mine drilling device provided by this utility model, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; for some known technologies, those skilled in the art can also use other alternative methods to implement the invention. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0026] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0027] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0028] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0029] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0030] like Figures 1 to 7 As shown, an embodiment of this utility model provides a drilling device for open-pit coal mines, including a drilling frame 1 and a moving trolley 2. The moving trolley 2 is symmetrically mounted on the bottom end of the drilling frame 1. A screw moving assembly 34 is mounted on the outer wall of the drilling frame 1. A lifting frame 3 is provided on the outside of the drilling frame 1 on one side of the screw moving assembly 34, and the lifting frame 3 is connected to the screw moving assembly 34. Fixed frames 4 are symmetrically mounted on the top end of the lifting frame 3. Rotating arms 29 are movably mounted on the outer wall of each fixed frame 4. Connecting frames 5 are mounted on the outer wall of each rotating arm 29. Mounting frames 6 are provided on the outside of each connecting frame 5. Each of the top sections is equipped with a servo motor 7, and each of the output ends of the servo motor 7 is equipped with a spiral drill head 8. A first electric push rod 11 is installed on the outer wall of the connecting frame 5, and a drive shaft 12 is installed on the output end of the first electric push rod 11. A limit plate 13 is slidably installed on the outer wall of the connecting frame 5 on one side of the drive shaft 12. Limit rails 15 are symmetrically installed on the outer wall of the connecting frame 5 on one side of the limit plate 13. Limit blocks 14 are slidably installed on the outer wall of the limit rails 15 on the side closest to the limit plate 13, and the limit blocks 14 are connected to the limit plate 13. The first electric push rod 11 is movably connected to the limit plate 13 via the drive shaft 12.

[0031] A rotating shaft 17 is movably mounted on the outer wall of the limiting plate 13, and the rotating shaft 17 extends to the outside of the connecting frame 5. A bushing 18 is movably fitted on the surface of the rotating shaft 17, and the bushing 18 is connected to the limiting plate 13. The rotating shaft 17 is also connected to the mounting frame 6. A sliding groove 16 is provided on the outer wall of the connecting frame 5 on one side of the rotating shaft 17, and the sliding groove 16 is slidably connected to the rotating shaft 17. A fixing plate 19 is installed on the top of the connecting frame 5 on the side away from the first electric push rod 11. A limiting groove 20 is provided on the outer wall of the fixing plate 19. A driving block 21 is installed on the end of the rotating shaft 17 near the limiting groove 20. A limiting wheel 22 is movably mounted on the outer wall of the driving block 21, and the limiting wheel 22 is slidably connected to the limiting groove 20.

[0032] The drilling frame 1 is manually pushed to the location in the open-pit coal mine where drilling is required, supported by the movable support of the mobile trolley 2. The control panel 10 is activated to open the first electric push rod 11. Supported by the connecting frame 5, the first electric push rod 11 drives the limiting plate 13 to rotate via the drive shaft 12. The limiting block 14 slides on the surface of the limiting rail 15 to limit and support the limiting plate 13. The limiting plate 13 drives the rotating shaft 17 to move via the bushing 18. The sliding groove 16 provides sliding support for the rotating shaft 17. The rotating shaft 17 drives the drive block 21 to move. The drive block 21 drives the limiting wheel 22 to move. With the movable support of the drive block 21 for the limiting wheel 22, the limiting wheel 22 slides inside the limiting groove 20. With the limiting groove 20 limiting the limiting wheel 22, the limiting wheel 22 drives the drive block 21 to rotate. The drive block 21 drives the rotating shaft 17 to rotate. The bushing 18 provides movable support for the rotating shaft 17.

[0033] The rotating shaft 17 drives the mounting frame 6 to rotate, and the mounting frame 6 drives the servo motor 7 and the spiral drill head 8 to rotate to a suitable angle. When the two sets of spiral drill heads 8 rotate to the suitable drilling angle, the control panel 10 opens the lead screw moving assembly 34 to facilitate the movement of the lifting frame 3. The lifting frame 3 then moves the fixed frame 4, connecting frame 5, mounting frame 6, servo motor 7, and spiral drill head 8 to the surface of the coal mine that needs to be drilled. The control panel 10 then opens the two sets of servo motors 7 to facilitate the rotation of the two sets of spiral drill heads 8, allowing the two sets of spiral drill heads 8 to perform convenient drilling operations on the coal mine. This enables the drilling device to perform convenient and rapid drilling operations on the coal mine, facilitates convenient and flexible adjustment of the drilling angle, and allows for two sets of drilling operations to be performed at once, thus improving the efficiency of drilling in the coal mine.

[0034] Each fixed frame 4 has a second electric push rod 23 installed at its top. Each output end of the second electric push rod 23 has a transmission block 24 installed. Each fixed frame 4 on one side of the transmission block 24 has a slider 25 installed at its top. Each slider 25 has a slide rail 35 slidably installed at its top. Each slide rail 35 has a rack 26 installed at its top. The transmission block 24 is connected to the rack 26. Each fixed frame 4 on one side of the rack 26 has a rotating shaft 28 movably installed at its top. The rotating shaft 28 is connected to the rotating arm 29. A gear 27 is fitted on the surface of the rotating shaft 28 on one side of the rack 26. The rack 26 and the gear 27 mesh with each other.

[0035] When it is necessary to adjust the drilling position in the coal mine, the control panel 10 is activated to open the second electric push rod 23. Supported by the fixed frame 4, the second electric push rod 23 drives the rack 26 to move via the transmission block 24. The slide rail 35 slides inside the slider 25 to limit and support the rack 26. Under the meshing of the rack 26 and the gear 27, the rack 26 drives the gear 27 to rotate, and the gear 27 drives the rotating shaft 28 to rotate. The fixed frame 4 provides movable support for the rotating shaft 28, which drives the rotating arm 29 to rotate. The rotating arm 29 drives the connecting frame 5 to rotate, and the connecting frame 5 drives the mounting frame 6, the servo motor 7, and the spiral drill head 8 to conveniently rotate. This realizes convenient multi-position adjustment of the drilling position in the coal mine, facilitates convenient multi-level adjustment of the drilling position, and increases the drilling range in the coal mine.

[0036] Support frames 9 are symmetrically installed on the side wall of the drilling frame 1. Threaded sleeves 30 are installed at the top of each support frame 9. Threaded rods 32 are movably installed inside each threaded sleeve 30, extending to the outside of the support frame 9. The threaded sleeves 30 and threaded rods 32 are threadedly connected. Handwheels 31 are installed at the top of each threaded rod 32. Fixed discs 33 are installed at the bottom of each threaded rod 32 on the side away from the handwheels 31. A control panel 10 is installed on the side wall of the drilling frame 1 on the side away from the lifting frame 3. The output end of the control panel 10 is electrically connected to the input ends of the lead screw moving assembly 34, the first electric push rod 11, the servo motor 7, and the second electric push rod 23.

[0037] Two sets of handwheels 31 are manually rotated to facilitate the rotation of the threaded rod 32. Under the limiting position of the threaded sleeve 30 by the support frame 9, and with the threaded connection between the threaded sleeve 30 and the threaded rod 32, the threaded sleeve 30 drives the threaded rod 32 to move, and the threaded rod 32 drives the fixed plate 33 to move, so that the fixed plate 33 can be moved to the ground. This facilitates the stable fixing and support of the spiral drill head 8 with the cooperation of the two sets of fixed plates 33, preventing the spiral drill head 8 from shifting during drilling. This achieves convenient and stable fixing of the drilling device during drilling, avoiding the drilling device from shifting during drilling and affecting the drilling effect.

[0038] The working principle of the technical solution provided by this utility model is as follows: The first electric push rod 11 drives the limiting plate 13 to rotate via the drive shaft 12. The limiting plate 13 drives the flip shaft 17 to move via the bushing 18. The flip shaft 17 drives the drive block 21 to move. The drive block 21 with the limiting wheel 22 slides inside the limiting groove 20. The limiting wheel 22 drives the drive block 21 to rotate. The drive block 21 drives the flip shaft 17 to rotate. The flip shaft 17 drives the mounting frame 6 to rotate. The mounting frame 6 drives the servo motor 7 and the spiral drill head 8 to rotate to a suitable angle. The screw moving assembly 34 drives the lifting frame 3 to move. The lifting frame 3 drives the fixed frame 4, the connecting frame 5, the mounting frame 6, the servo motor 7, and the spiral drill head 8 to move conveniently to the surface of the coal mine that needs to be drilled. The two sets of servo motors 7 drive the two sets of spiral drill heads 8 to rotate, so as to facilitate the two sets of spiral drill heads 8 to... In the coal mine, a convenient drilling operation is performed. When the drilling position needs to be adjusted, the second electric push rod 23 drives the rack 26 to move via the transmission block 24. The rack 26 drives the gear 27 to rotate, the gear 27 drives the rotating shaft 28 to rotate, the rotating shaft 28 drives the rotating arm 29 to rotate, the rotating arm 29 drives the connecting frame 5 to rotate, and the connecting frame 5 drives the mounting frame 6, the servo motor 7, and the spiral drill head 8 to rotate conveniently. Two sets of handwheels 31 are manually rotated to facilitate the rotation of the threaded rod 32. The threaded sleeve 30 drives the threaded rod 32 to move, and the threaded rod 32 drives the fixed plate 33 to move, so that the fixed plate 33 can be moved to the ground. This allows the spiral drill head 8 to be stably fixed and supported with the cooperation of the two sets of fixed plates 33, preventing the spiral drill head 8 from shifting during drilling, thus completing the use of the drilling device.

[0039] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A drilling device for open-pit coal mines, characterized in that: The device includes a drilling frame and a moving trolley. The moving trolley is symmetrically mounted on the bottom end of the drilling frame. A lead screw moving assembly is mounted on the outer wall of the drilling frame. A lifting frame is provided on the outside of the drilling frame on one side of the lead screw moving assembly, and the lifting frame is connected to the lead screw moving assembly. Fixed frames are symmetrically mounted on the top end of the lifting frame. Rotating arms are movably mounted on the outer wall of each fixed frame. Connecting frames are mounted on the outer wall of each rotating arm. Mounting frames are provided on the outside of each connecting frame. Servo motors are mounted on the top end of each mounting frame. Spiral drill heads are mounted on the output end of each servo motor. A first electric push rod is mounted on the outer wall of the connecting frame. A drive shaft is mounted on the output end of the first electric push rod. A limit plate is slidably mounted on the outer wall of the connecting frame on one side of the drive shaft. Limit rails are symmetrically mounted on the outer wall of the connecting frame on one side of the limit plate.

2. The open-pit coal mine drilling device according to claim 1, characterized in that: Limiting blocks are slidably installed on the outer wall of the limiting rail near the limiting plate, and the limiting blocks are connected to the limiting plate. The first electric push rod is movably connected to the limiting plate via a drive shaft. A flipping shaft is movably installed on the outer wall of the limiting plate, and the flipping shaft extends to the outside of the connecting frame. A bushing is movably fitted on the surface of the flipping shaft, and the bushing is connected to the limiting plate. The flipping shaft is also connected to the mounting frame. A sliding groove is provided on the outer wall of the connecting frame on one side of the flipping shaft, and the sliding groove is slidably connected to the flipping shaft.

3. The open-pit coal mine drilling device according to claim 2, characterized in that: Each of the connecting frames has a fixed plate installed on the top of the side away from the first electric push rod. Each fixed plate has a limit groove on its outer wall. Each of the flipping shafts has a drive block installed at the end near the limit groove. Each drive block has a limit wheel movably installed on its outer wall, and the limit wheel is slidably connected to the limit groove.

4. The open-pit coal mine drilling device according to claim 3, characterized in that: Each of the fixed frames is equipped with a second electric push rod at its top, and each of the second electric push rods is equipped with a transmission block at its output end.

5. The open-pit coal mine drilling device according to claim 4, characterized in that: Each of the fixed frames on one side of the transmission block is equipped with a slider, and each slider is slidably mounted with a slide rail.

6. The open-pit coal mine drilling device according to claim 5, characterized in that: Each slide rail is equipped with a rack at its top, and the transmission block is connected to the rack.

7. The open-pit coal mine drilling device according to claim 6, characterized in that: A rotating shaft is movably mounted on the top of the fixed frame on one side of the rack, and the rotating shaft is connected to the rotating arm.

8. The open-pit coal mine drilling device according to claim 7, characterized in that: A gear is fitted onto the rotating shaft surface on one side of the rack, and the rack meshes with the gear.

9. The open-pit coal mine drilling device according to claim 8, characterized in that: Support frames are symmetrically installed on the side wall of the drilling frame. Each support frame has a threaded sleeve at its top. A threaded rod is movably installed inside each threaded sleeve, and the threaded rod extends to the outside of the support frame. The threaded sleeve and the threaded rod are threadedly connected. A handwheel is installed at the top of each threaded rod, and a fixing plate is installed at the bottom of each threaded rod on the side away from the handwheel.

10. The open-pit coal mine drilling device according to claim 9, characterized in that: A control panel is installed on the side wall of the drilling frame away from the lifting frame, and the output end of the control panel is electrically connected to the input ends of the lead screw moving assembly, the first electric push rod, the servo motor, and the second electric push rod.

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