Drilling rig for coal mine

Abstract

The invention discloses a coal mine drilling device, and relates to the technical field of soil layer drilling equipment, the coal mine drilling device comprises two transverse plates, a pair of vertical plates is slidably connected between the two transverse plates, the bottom surfaces of the two vertical plates are slidably connected with a protective shell, the top surface of the protective shell is fixedly connected with a drilling machine, the drilling machine is provided with a drilling rod, and the drilling rod penetrates through the protective shell and extends into the ground; level gauges are fixedly installed on the side walls of the two transverse plates correspondingly, supporting assemblies are symmetrically installed on the bottom faces of the transverse plates, a cylinder is fixedly installed in the protective shell, the bottom of the cylinder makes contact with the ground, a scraping assembly is installed in the cylinder, a first driving assembly is installed in the transverse plates and is in transmission connection with a vertical plate, and a second driving assembly is installed in the vertical plate. The second driving assembly is in transmission connection with the protective shell. The device is high in adjustability, can quickly complete point position transfer, and is provided with a scraping assembly, so that a soil sample can be transferred, and accumulation is prevented; and the height can be adjusted through the supporting assembly, the whole body is kept horizontal, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of soil layer drilling equipment, in particular to a drilling device for coal mines. Background Art

[0002] Due to the important impact of complex geological structures on coal mine production and safety, the application of drilling technology has become the most important source of geological data. In addition, accidents such as water seepage, roof collapse, and fire often occur underground in coal mines. The application of drilling technology has important practical significance in avoiding water disasters, waste of resources and projects, and gas accidents. When mining coal, it is necessary to conduct geological exploration of the mining site to detect the location of the coal mine. Various parameters and hydrogeological materials can also be collected to provide a reliable theoretical basis for geological exploration design and construction.

[0003] In the process of geological exploration, coal mine drilling equipment is needed to drill samples for research. Existing coal mine drilling equipment needs to be disassembled and reinstalled as a whole when changing the location, which is time-consuming and labor-intensive. In addition, the soil samples taken out are prone to accumulation, resulting in slow progress of drilling work.

[0004] Therefore, there is an urgent need for a drilling device for coal mines to solve the problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to provide a drilling device for coal mines to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides a drilling device for coal mines, comprising two horizontal plates, a pair of vertical plates are slidably connected between the two horizontal plates, protective shells are slidably connected to the bottom surfaces of the two vertical plates, a drilling rig is fixedly connected to the top surface of the protective shell, a drill rig is installed on the drilling rig, the drill rod passes through the protective shell and extends into the ground, levels are fixedly installed on the side walls of the two horizontal plates, support assemblies are symmetrically installed on the bottom surfaces of the horizontal plates, a cylinder is fixedly installed in the protective shell, the bottom of the cylinder is in contact with the ground, a scraping assembly is installed in the cylinder, a first driving assembly is installed in the horizontal plate, the first driving assembly is transmission-connected to the vertical plates, a second driving assembly is installed in the vertical plates, and the second driving assembly is transmission-connected to the protective shell.

[0007] Preferably, the first driving assembly includes a first motor fixedly connected to the inner wall of the horizontal plate, the output shaft of the first motor is fixedly connected to a first transmission wheel, the first transmission wheel is connected to a second transmission wheel via a transmission belt, the first transmission wheel and the second transmission wheel are both rotatably connected to the inner wall of the horizontal plate, a fixed block is fixedly connected to the transmission belt, the fixed block extends out of the horizontal plate and is fixedly connected to the ends of the two vertical plates.

[0008] Preferably, the second driving assembly includes a second motor fixedly connected to the inner wall of the vertical plate, the output shaft of the second motor is fixedly connected to a screw, one end of the screw away from the second motor is rotatably connected to the inner wall of the vertical plate, a slider passes through the screw and is threadedly connected, the slider is slidably connected to the inner wall of the vertical plate, a connecting plate is fixedly connected to the bottom of the slider, and the bottom of the connecting plate is fixedly connected to the protective shell.

[0009] Preferably, a first slide groove is formed on the side wall of the horizontal plate, the fixed block is slidably connected to the first slide groove, a second slide groove is formed on the bottom of the vertical plate, the connecting plate is located in the second slide groove and is slidably connected to the second slide groove.

[0010] Preferably, the scraping assembly comprises a disc rotatably connected to the inner wall of the cylinder, a through hole is provided at the center of the disc, the drill rod is adapted to the through hole, a scraper is fixedly connected to the bottom surface of the disc, and the bottom of the scraper contacts the inner bottom surface of the cylinder.

[0011] Preferably, a first roller is fixedly connected to the top surface of the disc, the drill rod passes through the first roller and is rotatably connected to the first roller, the first roller is connected to the second roller via a belt drive, the second roller is fixedly connected to the output shaft of the third motor, the third motor is fixedly connected to a support plate, and the support plate is fixedly connected to the inner wall of the cylinder.

[0012] Preferably, the side wall of the cylinder is provided with an opening, and the side wall of the protective shell is provided with a sample outlet, and the sample outlet is arranged corresponding to the opening.

[0013] Preferably, the support assembly includes a threaded rod detachably connected to the bottom surface of the cross plate, the bottom of the threaded rod extends into the support leg, the top of the support leg is rotatably connected with a nut, the threaded sleeve is arranged on the threaded rod and threadedly connected to the threaded rod, and the bottom of the support leg is fixedly connected with a support foot.

[0014] Preferably, an anchor rod is fixedly connected to the bottom surface of the support foot, and the anchor rod is inserted into the ground.

[0015] Preferably, the supporting legs are symmetrically provided with limiting grooves, the bottom of the threaded rod is fixedly connected to a limiting rod, and both ends of the limiting rod extend into the limiting grooves and are slidably connected to the limiting grooves.

[0016] The present invention discloses the following technical effects: when in use, the horizontal plate is propped up by the support assembly, and the support assembly is fine-tuned by observing the level to keep the horizontal plate horizontal, so as to be suitable for different terrains. Then, the height of the horizontal plate is adjusted by the support assembly to make the protective shell contact the ground. The drill rig drives the drill rod to rotate and drill downward, and the soil sample taken out enters the protective shell. The soil sample around the drill rod is taken away by the scraper assembly, and the soil sample is sent out by centrifugal force to prevent accumulation and improve efficiency; the vertical plate is driven to move by the first drive assembly, and the protective shell is driven to move by the second drive assembly, so that it can be quickly transferred to another point without re-disassembly and reassembly, which greatly improves work efficiency. The present invention has strong adjustable performance, can quickly complete the transfer of points, and is equipped with a scraper assembly, which can transfer soil samples to prevent accumulation; the height can be adjusted by the support assembly, and the whole can be kept horizontal, and the scope of application is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the horizontal plate of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the horizontal plate of the present invention when viewed from above;

[0021] Figure 4 It is a schematic diagram of the internal structure of the vertical plate of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the protective shell of the present invention when viewed from above;

[0023] Figure 6 This is a schematic diagram of the internal structure of Yuantong of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the supporting leg of the present invention;

[0025] Figure 8 It is a side view of the round tube of the present invention;

[0026] In the figure: 1. horizontal plate; 2. vertical plate; 3. drilling rig; 4. protective shell; 5. drill rod; 6. support foot; 7. anchor rod; 8. support leg; 9. level; 10. first motor; 11. first transmission wheel; 12. transmission belt; 13. fixed block; 14. second transmission wheel; 15. first slide groove; 16. second motor; 17. lead screw; 18. slider; 19. connecting plate; 20. second slide groove; 21. cylinder; 22. sample outlet; 23. scraper; 24. first roller; 25. belt; 26. second roller; 27. third motor; 28. support plate; 29. ​​threaded rod; 30. nut; 31. limit groove; 32. limit rod; 33. disc; 34. opening. DETAILED DESCRIPTION

[0027] Coal mine drilling equipment is an important equipment for underground coal mine operations, mainly used for geological exploration, gas extraction, water hazard prevention, etc. With the continuous advancement of coal mining technology, the structure and technical level of coal mine drilling equipment are also constantly improving.

[0028] The main components of the drilling device for coal mines: The drilling device for coal mines is usually composed of multiple key components, each of which has its own unique functions and uses, working together to complete the drilling task. The following is a detailed introduction to its main components: The drill bit is the most direct working component of the drilling device, which is used to break rocks and form boreholes. According to the material and design, the drill bit can be divided into many types to meet different drilling needs and geological conditions. Common drill bit types include PDC drill bits, diamond drill bits, etc. PDC drill bits are suitable for hard rock and soft coal drilling, with the characteristics of wear resistance and high efficiency; diamond drill bits are suitable for harder rock drilling, with higher hardness and service life. The drill rod is a key component connecting the drill bit and the power system. It not only transmits torque and propulsion, but also is responsible for bringing the cuttings generated during the drilling process out of the ground. The types and specifications of drill rods are diverse to meet the needs of different geological conditions and drilling processes. Common drill rod types include spiral drill rods, wide blade spiral drill rods, triangular drill rods, cable drill rods, etc. These drill rods have different structural characteristics and performances, which can meet the needs of different drilling conditions. The frame is the supporting structure of the drilling rig, which is used to fix and support the various components of the drilling rig. The design of the frame should meet the stability and reliability requirements of the drilling operation and be able to withstand various forces and vibrations during the drilling process. Common frame types include crawler frames, directional drilling rig frames, etc., to meet the needs of different operating environments and drilling processes. The power system is the "heart" of the drilling rig and provides the required power for the drilling operation. Depending on the type and size of the drilling rig, the power system may include an electric motor, an internal combustion engine, or a hydraulic system. These power sources drive the drill bit to rotate through a transmission mechanism while providing sufficient propulsion to penetrate deep into the ground. The choice of the power system should be determined according to the specific needs and geological conditions of the drilling operation to ensure the efficiency and safety of the drilling operation. The control system is the "brain" of the drilling rig, responsible for monitoring and adjusting various parameters of the drilling rig, such as speed, propulsion, drilling depth, etc. Modern drilling rigs are usually equipped with advanced electronic control systems that can achieve precise drilling control and data recording. The control system can monitor various parameters in the drilling process in real time and adjust them as needed to ensure the accuracy and stability of the drilling operation. In addition to the above core components, the drilling rig also includes some auxiliary components, such as mud circulation system, drilling tower, winch, etc. The mud circulation system is used to send mud into the borehole to cool the drill bit, remove rock cuttings and maintain the hole wall. The drilling tower is used to support the drill rod and provide an operating platform. The winch is used to lift and lower the drill rod and perform other auxiliary operations. These auxiliary components play an important auxiliary role in the drilling process to ensure the smooth progress of the drilling operation.

[0029] Working principle of drilling device for coal mine: The working principle of drilling device for coal mine is to use mechanical force and impact force to penetrate the geological structure layer and form a borehole. The following is a detailed introduction to its working principle: The drilling process is achieved by rotating the drill bit and the pressure pump. First, the power system drives the drill bit to rotate, generate cutting force, break the rock and form a borehole. At the same time, the pressure pump applies pressure to the drill bit through the drill rod to increase the drilling depth. During the drilling process, the drill rod continuously transmits torque and propulsion force to bring the cuttings out of the borehole to the ground. Mud circulation is an important part of the drilling process. The mud is sent into the borehole through the mud pump to form a circulating flow. The main function of the mud is to cool the drill bit, remove the cuttings and maintain the hole wall. The mud circulates in the borehole, brings the cuttings out of the ground, and is processed and reused through the mud circulation system. The circulation speed and flow rate of the mud should be determined according to the specific needs and geological conditions of the drilling operation to ensure the efficiency and safety of the drilling operation. Measurement while drilling is an important technology in the drilling process. Through the measurement while drilling system, the trajectory, depth, lithology and other information of the borehole can be monitored in real time. This information is of great significance for controlling the drilling direction, adjusting drilling parameters and evaluating the drilling effect. The measurement while drilling system usually uses sensors and data processing technology to transmit the measurement data to the ground control room in real time for operators to analyze and make decisions. Directional drilling is an advanced drilling technology that can achieve precise control of the drilling trajectory. The directional drilling system usually consists of a directional instrument, a guide drill and a control system. By adjusting the inclination angle and azimuth of the guide drill, the trajectory and depth of the borehole can be controlled. Directional drilling technology has the advantages of high drilling efficiency, large drilling depth, and controllable drilling trajectory. It has been widely used in underground drilling operations in coal mines.

[0030] Technical features of drilling devices for coal mines: Drilling devices for coal mines have a variety of technical features that enable them to adapt to different geological conditions and drilling needs. The following is a detailed introduction to its main technical features: Drilling devices for coal mines usually have strong drilling capabilities and can drill deeper boreholes. With the continuous advancement of drilling technology, the drilling capacity of modern drilling rigs has developed to more than 2,000 meters. This enables drilling devices for coal mines to meet the drilling needs of different depths and complex geological conditions. Modern drilling devices for coal mines usually use measurement while drilling systems and directional drilling technology to achieve accurate measurement and control of drilling trajectories. By real-time monitoring of the trajectory, depth, lithology and other information of the borehole, operators can adjust the drilling parameters in time to ensure the accuracy and stability of the borehole. Drilling devices for coal mines have strong adaptability and can adapt to different geological conditions and drilling needs. By selecting suitable drill bits and drill rods, and adjusting drilling parameters, it can adapt to drilling in rock formations of different hardness, different inclinations and different thicknesses. In addition, the drilling rig can also be equipped with different auxiliary components and tools to meet the needs of different working environments and drilling processes. Modern coal mine drilling rigs are usually equipped with advanced electronic control systems and automation devices, which can realize the automation and intelligence of drilling operations. Through the control system, various parameters of the drilling rig, such as rotation speed, propulsion force, mud circulation speed, etc., can be monitored and adjusted in real time. At the same time, automatic recording and analysis of data can be achieved to improve the efficiency and accuracy of drilling operations. With the continuous improvement of environmental awareness, the environmental protection of coal mine drilling rigs has also received more and more attention. Modern drilling rigs usually use environmentally friendly mud and materials to reduce the impact on the environment. At the same time, advanced mud treatment technology and equipment can be used to reuse and treat mud and reduce waste emissions.

[0031] Application of Coal Mine Drilling Devices: Coal mine drilling devices have been widely used in underground coal mine operations, mainly for geological exploration, gas extraction, water hazard prevention and control, etc. The following is a detailed introduction to its application: Geological exploration is an important task before coal mining. Through drilling, we can understand the geological structure of coal mines, the distribution of coal seams and rock strata. Coal mine drilling devices can drill deeper boreholes to obtain underground information and provide reliable geological basis for coal mining. Gas is a harmful gas in the coal mining process and needs to be extracted and treated. Coal mine drilling devices can drill into boreholes in coal seams and extract gas from the ground for treatment. Through reasonable borehole layout and extraction parameter settings, efficient and safe gas extraction can be achieved. Water hazard problems are often encountered in coal mining, which need to be prevented and controlled. Coal mine drilling devices can drill into boreholes in aquifers to conduct hydrogeological exploration and drainage operations. Through reasonable borehole layout and drainage parameter settings, the groundwater level can be effectively lowered to prevent water hazard accidents. In addition to the above applications, the drilling device for coal mines can also be used for other operations. For example, it can be used for engineering operations such as grouting reinforcement and anchor support; it can be used for geological disaster prevention and control such as landslide control and slope support; it can also be used for the construction of various small and medium diameter drilling holes such as anchors, anchor cable holes and inclined drainage holes for ground landslide control and slope support.

[0032] Development trend of drilling equipment for coal mines: With the continuous advancement of coal mining technology and the continuous improvement of environmental protection requirements, the development trend of drilling equipment for coal mines will present the following characteristics: In the future, drilling equipment for coal mines will pay more attention to efficiency, and reduce drilling costs by optimizing drilling parameters, improving drilling speed and efficiency. At the same time, advanced automation and intelligent technologies will be adopted to realize the automation and intelligent control of drilling operations, and improve the efficiency and accuracy of drilling operations. Intelligence is an important development direction for drilling equipment for coal mines in the future. By introducing advanced sensors, data processing and artificial intelligence technologies, real-time monitoring, intelligent analysis and decision-making of drilling operations can be achieved. This will help improve the efficiency and safety of drilling operations and reduce manual intervention and costs. Environmental protection is another important development direction for drilling equipment for coal mines in the future. With the continuous improvement of environmental awareness, drilling equipment for coal mines will pay more attention to environmental protection performance, use environmentally friendly mud and materials, and reduce the impact on the environment. At the same time, advanced mud treatment technology and equipment will be used to reuse and treat mud and reduce waste emissions. In the future, the drilling equipment for coal mines will pay more attention to multifunctionality to adapt to different geological conditions and drilling needs. By adding different auxiliary components and tools, it is possible to combine and switch multiple drilling processes and operating methods. This will help improve the flexibility and adaptability of drilling operations and meet the needs of different operating environments and drilling processes. Standardization is one of the development trends of drilling equipment for coal mines in the future. By formulating unified technical standards and specifications, it can ensure that the quality and performance of drilling equipment meet relevant requirements and improve the reliability and safety of drilling operations. At the same time, it can also promote the exchange and cooperation of drilling technology and promote the continuous innovation and development of drilling technology.

[0033] Coal mine drilling equipment is an important equipment for underground coal mine operations. It has the characteristics of strong drilling ability, measurable and controllable drilling trajectory, strong adaptability, high degree of automation and good environmental protection. It has been widely used in geological exploration, gas extraction, water hazard prevention and control. In the future, with the continuous advancement of coal mining technology and the continuous improvement of environmental protection requirements, coal mine drilling equipment will show a development trend of high efficiency, intelligence, environmental protection, multi-function and standardization. This will help improve the efficiency and safety of drilling operations, reduce drilling costs, and promote the continuous innovation and development of coal mining technology.

[0034] In the development process of coal mine drilling equipment, there are many innovation opportunities and challenges. The following is a specific analysis of these innovations and challenges: Technological innovation is an important driving force for the development of coal mine drilling equipment. By developing new drill bits, drill rods, mud circulation systems and other key components, drilling efficiency can be improved and drilling costs can be reduced. For example, the use of new wear-resistant materials and coating technologies can extend the service life of drill bits and drill rods; by optimizing mud formulas and circulation systems, the cooling and cuttings carrying capacity of mud can be improved. The application of intelligent technology has brought revolutionary changes to coal mine drilling equipment. By introducing sensors, data processing and artificial intelligence technologies, real-time monitoring, intelligent analysis and decision-making of drilling operations can be achieved. For example, using a measurement while drilling system to monitor the borehole trajectory and lithology information in real time, the drilling parameters can be adjusted in time to ensure the accuracy and stability of the borehole; through data analysis technology, potential risks in the drilling process can be predicted and preventive measures can be taken in advance. Multifunctional design is an important development direction for future coal mine drilling equipment. By adding different auxiliary components and tools, a variety of drilling processes and operation methods can be combined and switched. For example, the combination of directional drilling technology and grouting reinforcement technology can achieve precise control of the drilling trajectory and improve the grouting reinforcement effect; the combination of drilling equipment and anchor support equipment can realize the integrated operation of drilling, grouting and support. The complexity of coal mine geological conditions has brought great challenges to drilling operations. The parameters such as hardness, inclination and thickness of rock formations under different geological conditions vary greatly, which puts high demands on the performance and adaptability of drilling equipment. Therefore, how to select appropriate drilling parameters and auxiliary components according to different geological conditions has become an urgent problem to be solved. With the continuous improvement of environmental protection requirements, the environmental performance of drilling equipment for coal mines has also become a focus of attention. A large amount of waste mud and rock cuttings will be generated during traditional drilling operations, which will cause certain pollution to the environment. Therefore, how to use environmentally friendly mud and materials to reduce the impact on the environment, and how to reuse and treat mud have become important challenges in the research and development and production of drilling equipment for coal mines. The underground working environment of coal mines is complex and changeable, which puts high demands on the safety performance of drilling equipment. How to ensure the stability and reliability of the drilling device during operation and prevent safety accidents has become an important issue in the research and development and production of drilling devices for coal mines. Therefore, it is necessary to strengthen the safety design and protection measures of the drilling device and improve the safety awareness and operating skills of the operators.

[0035] Coal mine drilling equipment is an important equipment for underground coal mine operations, with broad application prospects and development potential. Through technological innovation, the application of intelligent technology and multifunctional design, the efficient, intelligent and environmentally friendly development of coal mine drilling equipment can be promoted. However, in terms of the complexity of geological conditions, increased environmental protection requirements and improved safety performance requirements, coal mine drilling equipment still faces some challenges. Therefore, it is necessary to continuously strengthen technological research and development and innovation, improve the performance and adaptability of drilling equipment, so as to meet the needs of coal mining and environmental protection requirements. At the same time, it is also necessary to strengthen safety management and protective measures to ensure the safety and reliability of drilling operations.

[0036] In the future, the drilling equipment for coal mines will continue to develop towards a more efficient, intelligent, environmentally friendly, multi-functional and safer direction. This will help promote the continuous innovation and development of coal mining technology, improve the efficiency and safety of coal mining, and make greater contributions to the sustainable development of the coal mining industry. At the same time, it also provides a broad market and development space for the research and development and production of drilling equipment for coal mines.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Reference Figure 1-Figure 8 As shown, this embodiment provides a drilling device for coal mines, including two horizontal plates 1, a pair of vertical plates 2 are slidably connected between the two horizontal plates 1, a protective shell 4 is slidably connected to the bottom surfaces of the two vertical plates 2, a drilling rig 3 is fixedly connected to the top surface of the protective shell 4, a drill rod 5 is installed on the drilling rig 3, the drill rod 5 passes through the protective shell 4 and extends into the ground, a level 9 is fixedly installed on the side walls of the two horizontal plates 1, a support assembly is symmetrically installed on the bottom surface of the horizontal plate 1, a cylinder 21 is fixedly installed in the protective shell 4, the bottom of the cylinder 21 is in contact with the ground, a scraping assembly is installed in the cylinder 21, a first driving assembly is installed in the horizontal plate 1, the first driving assembly is transmission-connected to the vertical plate 2, a second driving assembly is installed in the vertical plate 2, and the second driving assembly is transmission-connected to the protective shell 4.

[0040] When in use, the horizontal plate 1 is propped up by the support assembly, and the support assembly is fine-tuned by observing the level 9 to keep the horizontal plate 1 horizontal, so as to be suitable for different terrains. Then, the height of the horizontal plate 1 is adjusted by the support assembly to make the protective shell 4 contact the ground. The drilling rig 3 drives the drill rod 5 to rotate and drill downward, and the soil sample taken out enters the protective shell 4. The soil sample around the drill rod 5 is taken away by the scraping assembly, and the soil sample is sent out by centrifugal force to prevent accumulation and improve efficiency; the vertical plate 2 is driven to move by the first driving assembly, and the protective shell 4 is driven to move by the second driving assembly, and then it can be quickly transferred to another point without re-disassembly and reassembly, which greatly improves work efficiency. The present invention has strong adjustable performance, can quickly complete the transfer of points, and is equipped with a scraping assembly, which can transfer soil samples to prevent accumulation; the height can be adjusted by the support assembly, and the whole can be kept horizontal, and the scope of application is wide.

[0041] Further optimized solution, the first driving assembly includes a first motor 10 fixedly connected to the inner wall of the horizontal plate 1, the output shaft of the first motor 10 is fixedly connected to the first transmission wheel 11, the first transmission wheel 11 is connected to the second transmission wheel 14 through the transmission belt 12, the first transmission wheel 11 and the second transmission wheel 14 are both rotatably connected to the inner wall of the horizontal plate 1, the transmission belt 12 is fixedly connected to a fixed block 13, the fixed block 13 extends out of the horizontal plate 1 and is fixedly connected to the ends of the two vertical plates 2. The first motor 10 drives the first transmission wheel 11 to rotate, the first transmission wheel 11 drives the second transmission wheel 14 to rotate through the transmission belt 12, the transmission belt 12 drives the fixed block 13 to move, the fixed block 13 drives the horizontal plate 1 to move, and then the lateral position is adjusted, and the forward and reverse movement of the fixed block 13 is achieved by the forward and reverse rotation of the first motor 10.

[0042] Further optimized solution, the second drive assembly includes a second motor 16 fixedly connected to the inner wall of the vertical plate 2, the output shaft of the second motor 16 is fixedly connected to a lead screw 17, the end of the lead screw 17 away from the second motor 16 is rotatably connected to the inner wall of the vertical plate 2, a slider 18 is passed through and threadedly connected to the lead screw 17, the slider 18 is slidably connected to the inner wall of the vertical plate 2, a connecting plate 19 is fixedly connected to the bottom of the slider 18, and the bottom of the connecting plate 19 is fixedly connected to the protective shell 4. The second motor 16 drives the lead screw 17 to rotate, the lead screw 17 drives the slider 18 to move, the slider 18 drives the connecting plate 19 to move, the connecting plate 19 drives the protective shell 4 to move, and the protective shell 4 drives the drilling rig 3 to move, thereby completing the longitudinal adjustment of the drilling rig 3.

[0043] In a further optimized solution, a first slide groove 15 is provided on the side wall of the horizontal plate 1, the fixing block 13 is slidably connected to the first slide groove 15, a second slide groove 20 is provided on the bottom of the vertical plate 2, and the connecting plate 19 is located in the second slide groove 20 and is slidably connected to the second slide groove 20. The provision of the first slide groove 15 and the second slide groove 20 facilitates the movement of the horizontal plate 1 and the connecting plate 19, and improves the smoothness of the adjustment.

[0044] In a further optimized solution, the scraping assembly includes a disc 33 rotatably connected to the inner wall of the cylinder 21, a through hole is provided in the center of the disc 33, the drill rod 5 is adapted to the through hole, a scraper 23 is fixedly connected to the bottom surface of the disc 33, and the bottom of the scraper 23 contacts the inner bottom surface of the cylinder 21. The scraper 23 is driven to move by the rotation of the disc 33, and the scraper 23 scrapes the soil sample and sends the soil sample out under the action of centrifugal force.

[0045] In a further optimized solution, the top surface of the disc 33 is fixedly connected with the first roller 24, the drill rod 5 passes through the first roller 24 and is rotatably connected with the first roller 24, the first roller 24 is connected with the second roller 26 through the belt 25, the second roller 26 is fixedly connected with the output shaft of the third motor 27, the third motor 27 is fixedly connected with the support plate 28, and the support plate 28 is fixedly connected with the inner wall of the cylinder 21. The support plate 28 plays a fixing role for the third motor 27, the third motor 27 drives the second roller 26 to rotate, the second roller 26 drives the first roller 24 to rotate through the belt 25, and the first roller 24 drives the disc 33 to rotate, thereby achieving the scraping work.

[0046] In a further optimized solution, the side wall of the cylinder 21 is provided with an opening 34, and the side wall of the protective shell 4 is provided with a sample outlet 22, which is arranged corresponding to the opening 34. Under the action of centrifugal force, the soil sample is thrown out from the opening 34 of the cylinder and scattered at the sample outlet 22 of the protective shell 4, which is convenient for collection and processing; the setting of the protective shell 4 can reduce the soil sample from being blown away, and at the same time, the operator does not need to take samples around the drill rod 5, thereby improving safety.

[0047] Further optimized solution, the support assembly includes a threaded rod 29 detachably connected to the bottom surface of the horizontal board 1, the bottom of the threaded rod 29 extends into the support leg 8, the top of the support leg 8 is rotatably connected with a nut 30, the threaded sleeve is arranged on the threaded rod 29 and is threadedly connected to the threaded rod 29, and the bottom of the support leg 8 is fixedly connected with a support foot 6. The nut 30 is rotated forward or reversely to move the threaded rod 29 upward or downward along the support leg 8 to adjust the height of the horizontal board 1, and the support foot 6 expands the contact area with the ground and improves stability.

[0048] Further optimizing the scheme, the bottom surface of the support leg 6 is fixedly connected with an anchor rod 7, and the anchor rod 7 is inserted into the ground. The anchor rod 7 is inserted into the ground, which further improves the stability of the structure and facilitates the smooth progress of the drilling work.

[0049] In a further optimized solution, a limiting groove 31 is symmetrically provided in the leg 8, a limiting rod 32 is fixedly connected to the bottom of the threaded rod 29, and both ends of the limiting rod 32 extend into the limiting groove 31 and are slidably connected to the limiting groove 31. The setting of the limiting rod 32 and the limiting groove 31 prevents the threaded rod 29 from rotating, which facilitates the adjustment work.

[0050] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A drilling device for coal mines, characterized in that: The invention comprises two horizontal plates (1), a pair of vertical plates (2) are slidably connected between the two horizontal plates (1), a protective shell (4) is slidably connected to the bottom surfaces of the two vertical plates (2), a drilling rig (3) is fixedly connected to the top surface of the protective shell (4), a drill rod (5) is installed on the drilling rig (3), the drill rod (5) passes through the protective shell (4) and extends into the ground, a level (9) is fixedly installed on the side walls of the two horizontal plates (1), a support assembly is symmetrically installed on the bottom surface of the horizontal plate (1), a cylinder (21) is fixedly installed in the protective shell (4), the bottom of the cylinder (21) is in contact with the ground, a scraping assembly is installed in the cylinder (21), a first driving assembly is installed in the horizontal plate (1), the first driving assembly is in transmission connection with the vertical plate (2), a second driving assembly is installed in the vertical plate (2), the second driving assembly is in transmission connection with the protective shell (4).

2. The coal mine drilling device according to claim 1, characterized in that: The first driving assembly comprises a first motor (10) fixedly connected to the inner wall of the transverse plate (1); the output shaft of the first motor (10) is fixedly connected to a first transmission wheel (11); the first transmission wheel (11) is connected to a second transmission wheel (14) via a transmission belt (12); the first transmission wheel (11) and the second transmission wheel (14) are both rotatably connected to the inner wall of the transverse plate (1); a fixing block (13) is fixedly connected to the transmission belt (12); the fixing block (13) extends out of the transverse plate (1) and is fixedly connected to the ends of the two vertical plates (2).

3. The coal mine drilling device according to claim 2, characterized in that: The second driving assembly comprises a second motor (16) fixedly connected to the inner wall of the vertical plate (2); the output shaft of the second motor (16) is fixedly connected to a lead screw (17); one end of the lead screw (17) away from the second motor (16) is rotatably connected to the inner wall of the vertical plate (2); a slider (18) passes through and is threadedly connected to the lead screw (17); the slider (18) is slidably connected to the inner wall of the vertical plate (2); a connecting plate (19) is fixedly connected to the bottom of the slider (18); and the bottom of the connecting plate (19) is fixedly connected to the protective shell (4).

4. The coal mine drilling device according to claim 3, characterized in that: The side wall of the horizontal plate (1) is provided with a first sliding groove (15), the fixed block (13) is slidably connected to the first sliding groove (15), the bottom of the vertical plate (2) is provided with a second sliding groove (20), and the connecting plate (19) is located in the second sliding groove (20) and is slidably connected to the second sliding groove (20).

5. The coal mine drilling device according to claim 1, characterized in that: The scraping assembly comprises a disc (33) rotatably connected to the inner wall of the cylinder (21), a through hole is provided at the center of the disc (33), the drill rod (5) is adapted to the through hole, a scraper (23) is fixedly connected to the bottom surface of the disc (33), and the bottom of the scraper (23) contacts the inner bottom surface of the cylinder (21).

6. The coal mine drilling device according to claim 5, characterized in that: A first roller (24) is fixedly connected to the top surface of the disc (33); the drill rod (5) passes through the first roller (24) and is rotationally connected to the first roller (24); the first roller (24) is connected to a second roller (26) via a belt (25); the second roller (26) is fixedly connected to the output shaft of a third motor (27); the third motor (27) is fixedly connected to a support plate (28); and the support plate (28) is fixedly connected to the inner wall of the cylinder (21).

7. The coal mine drilling device according to claim 6, characterized in that: The side wall of the cylinder (21) is provided with an opening (34), and the side wall of the protective shell (4) is provided with a sample outlet (22), and the sample outlet (22) is arranged corresponding to the opening (34).

8. The coal mine drilling device according to claim 1, characterized in that: The support assembly comprises a threaded rod (29) detachably connected to the bottom surface of the horizontal plate (1); the bottom of the threaded rod (29) extends into the support leg (8); the top of the support leg (8) is rotatably connected to a nut (30); the threaded sleeve is arranged on the threaded rod (29) and is threadably connected to the threaded rod (29); and the bottom of the support leg (8) is fixedly connected to a support foot (6).

9. The coal mine drilling device according to claim 8, characterized in that: The bottom surface of the support foot (6) is fixedly connected with an anchor rod (7), and the anchor rod (7) is inserted into the ground.

10. The coal mine drilling device according to claim 8, characterized in that: The supporting legs (8) are symmetrically provided with limiting grooves (31), the bottom of the threaded rod (29) is fixedly connected to a limiting rod (32), and both ends of the limiting rod (32) extend into the limiting groove (31) and are slidably connected to the limiting groove (31).

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