A mining drilling apparatus for coal mining

Abstract

This invention relates to the field of coal mine drilling, and more particularly to a drilling and excavation device for coal mining. The device includes a base with side plates fixedly connected to both ends. A drive motor is fixedly mounted on one side plate, and a drive screw is provided at the output end of the drive motor. A transverse support is rotatably connected to the drive screw, and a transmission component is located in the center of the transverse support. A drilling component and an excavation component are mounted on the other side plate. The drilling and excavation components of this invention form a combined integrated structure, eliminating the need to replace equipment during switching, enabling "drilling while drilling," thereby significantly improving the efficiency of coal seam drilling and excavation, and effectively preventing gas leakage and improving drilling safety.

Description

Technical Field

[0001] This invention relates to the field of coal mine drilling technology, and in particular to a drilling equipment for coal mining. Background Technology

[0002] Complex geological structures have a significant impact on the safe production of coal mines. Water hazards in coal mines are a major factor affecting safe production. Therefore, during the mining process, it is necessary to conduct geological exploration of the underground working space, obtain stratigraphic data by drilling holes at appropriate locations in the roadways using drilling equipment, and analyze and study the drilling operations to provide technical support for coal seam mining and ensure safe production.

[0003] In existing technologies, drilling equipment used in coal mine exploration first uses drill rods to drill into the coal seam to detect methane gas. Once methane is detected, the drill rods are pulled out and the methane is discharged. Then, excavation equipment is used for large-area excavation. During this process, the drilling equipment and the excavation equipment work independently. The adjustment and switching of different equipment affects the efficiency of drilling and excavation in the coal seam. At the same time, before excavation, methane is prone to leak from the previous drill holes, posing a safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a drilling and excavation device for coal mining, aiming to solve the above-mentioned technical problems.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A drilling and excavation device for coal mining includes a base with side plates fixedly connected to both ends. A drive motor is fixedly installed on one side plate, and a drive screw is provided at the output end of the drive motor. A transverse support is threadedly rotatably connected to the drive screw, and a transmission component is provided in the center of the transverse support. A drilling component and an excavation component are provided on the other side plate.

[0007] The drilling assembly includes a drill rod, a drill bit is fixedly mounted at the front end of the drill rod, an air guide channel is provided inside the drill rod along the axial direction, the tail end of the drill rod is connected to one end of a ventilation hose through a rotating connector, an air pump is fixedly mounted at the upper end of the base, the other end of the ventilation hose is connected to the air pump, and the ventilation hose is connected to the air guide channel.

[0008] The excavation assembly includes an excavation rod that is rotatably engaged with a rod sleeve on a side plate. An excavation disc is fixedly mounted at the front end of the excavation rod. Excavation cutters are evenly arranged on the end face of the excavation disc. A soil discharge pipe is fixedly mounted inside the excavation rod along the axial direction. A drilling rod coaxially passes through the soil discharge pipe and extends out from the center of the excavation disc.

[0009] The transmission component is sequentially connected to the drilling component and the excavation component. The transmission component first drives the drilling component to excavate into the coal seam and extract the gas, and then the transmission component drives the excavation component to excavate into the coal seam and discharge the loose soil.

[0010] As a further aspect of the present invention: a vent hole is provided through the front end face of the drill bit, the vent hole is connected to the air guide cavity, a plug is slidably installed in the vent hole, a fixing plate is fixedly provided on the inner wall of the drill bit, and a return spring is provided between the plug and the fixing plate.

[0011] As a further embodiment of the present invention: the soil discharge pipe includes an inner sleeve and an outer sleeve arranged coaxially, and there is a certain gap between the outer wall of the inner sleeve and the inner wall of the outer sleeve to form a soil discharge channel. The two ends of the inner sleeve are fixedly connected to the outer sleeve through a connecting frame. A discharge spiral blade is provided on the outer wall of the inner sleeve. The outer sleeve is coaxially fixed inside the excavation rod, and the drilling rod slides coaxially through the inner sleeve.

[0012] As a further aspect of the present invention: a first groove and a first gear are provided on the outer wall of the drill rod, and a second groove and a second gear are provided on the outer wall of the excavation rod. The first gear and the second gear have the same number of teeth, and the outer diameters of the first gear and the second gear are equal.

[0013] As a further embodiment of the present invention: the transmission assembly includes a transmission collar, an inner ring gear groove is fixedly provided on the inner wall of the transmission collar, the inner ring gear meshes with a first gear or a second gear, an outer ring gear is fixedly provided on the outer wall of the transmission collar, a rotary motor is fixedly provided on the side wall of the transverse support, a rotary gear is provided at the output end of the rotary motor, the rotary gear meshes with the outer ring gear, and a plurality of sets of electric slide rails are evenly arranged circumferentially on the outer wall of the transmission collar, and a positioning clamp is slidably installed in each set of electric slide rails, the positioning clamp corresponding to a first clamping groove or a second clamping groove, and all the positioning clamps slide synchronously radially to clamp and fix the drill rod or excavation rod.

[0014] As a further embodiment of the present invention: the transmission collar has rotating annular protrusions extending outward at both ends, and the transverse support has a limiting rotating groove in the center, and the rotating annular protrusions are adapted to be rotatably installed in the limiting rotating groove.

[0015] As a further embodiment of the present invention: a support slide rod is fixedly provided between the side plates, the transverse support is slidably installed on the support slide rod, and a collection box is fixedly provided on the upper end of the base.

[0016] The beneficial effects of this invention are as follows: By setting up a drilling assembly, an excavation assembly, and a transmission assembly, during drilling, the transmission assembly drives the drill rod to rotate and excavate into the coal seam. During the excavation process, when methane gas is detected, the air pump draws gas through the ventilation hose, opening the air passage and extracting the methane gas. This allows for venting without removing the drill rod, preventing methane gas leakage from the borehole. During excavation, the transmission assembly switches to drive the excavation assembly, driving the excavation rod to rotate and excavate a large area of ​​the coal seam. During excavation, loose soil is simultaneously discharged using a soil discharge pipe. The transmission assembly not only enables flexible switching and adjustment between the drilling and excavation processes, but also forms a combined integrated structure between the drilling and excavation assemblies. No equipment replacement is required during switching, enabling "drilling as you explore," which greatly improves the efficiency of coal seam drilling and excavation, and effectively prevents methane leakage, thus improving drilling safety. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is another overall structural schematic diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the installation of the drilling rod and the excavation rod in this invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the drilling rod and the excavation rod in this invention.

[0022] Figure 5 This is a schematic diagram of the material discharge pipe in this invention.

[0023] Figure 6 This is a schematic diagram of the internal structure of the drill rod in this invention.

[0024] Figure 7 This is a schematic diagram of the transmission component in this invention.

[0025] Figure 8 This is a schematic diagram of the installation of the transmission collar in this invention.

[0026] In the diagram: 1. Base; 2. Side plate; 3. Drive motor; 4. Drive screw; 5. Horizontal movement bracket; 501. Limiting rotation groove; 6. Transmission assembly; 601. Transmission collar; 602. Inner ring tooth groove; 603. Outer ring gear; 604. Electric slide rail; 605. Positioning clamp; 606. Rotating ring protrusion; 7. Drilling assembly; 701. Drill rod; 702. Drill bit; 7021. Vent hole; 7022. Plug; 7023. Fixing plate; 7024. Return spring; 703. First clamping groove 704. First gear; 705. Ventilation hose; 706. Air duct; 707. Rotary connector; 8. Excavation assembly; 801. Excavation rod; 802. Excavation disc; 803. Excavating cutter head; 804. Second clamping groove; 805. Second gear; 806. Soil discharge pipe; 8061. Inner sleeve; 8062. Outer sleeve; 8063. Connecting frame; 8064. Discharge auger; 9. Rotary motor; 901. Rotary gear; 10. Support slide bar; 11. Collection box; 12. Air pump. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 and Figure 2 As shown, the present invention is a drilling and excavation equipment for coal mining, including a base 1, with side plates 2 fixedly connected to both ends of the base 1. A drive motor 3 is fixedly installed on one side plate 2, and a drive screw 4 is provided at the output end of the drive motor 3. A transverse support 5 is threadedly connected to the drive screw 4, and a transmission component 6 is provided in the center of the transverse support 5. A drilling component 7 and an excavation component 8 are provided on the other side plate 2.

[0029] like Figure 2 and Figure 4 As shown, the drilling assembly 7 includes a drill rod 701, a drill bit 702 fixedly mounted at the front end of the drill rod 701, a gas guide channel 706 arranged inside the drill rod 701 along the axial direction, and the tail end of the drill rod 701 connected to one end of a ventilation hose 705 via a rotating connector 707. An air pump 12 is fixedly mounted on the upper end of the base 1, and the other end of the ventilation hose 705 is connected to the air pump 12. The ventilation hose 705 is connected to the gas guide channel 706.

[0030] like Figure 3 and Figure 4As shown, the excavation assembly 8 includes an excavation rod 801, which is rotatably engaged with a rod sleeve on the side plate 2. An excavation disc 802 is fixedly installed at the front end of the excavation rod 801. Excavation cutter heads 803 are evenly arranged on the end face of the excavation disc 802. A soil discharge pipe 806 is fixedly installed inside the excavation rod 801 along the axial direction. A drilling rod 701 coaxially passes through the soil discharge pipe 806 and extends out from the center of the excavation disc 802.

[0031] The transmission component 6 is successively connected to the drilling component 7 and the excavation component 8. The transmission component 6 first drives the drilling component 7 to tunnel into the coal seam and extract the gas. Then the transmission component 6 drives the excavation component 8 to tunnel into the coal seam and discharge the loose soil.

[0032] Specifically, by setting up a drilling assembly 7, an excavation assembly 8, and a transmission assembly 6, during drilling, the transmission assembly 6 drives the drill rod 701 to rotate and excavate into the coal seam. During the excavation process, when methane gas is detected by the drill bit 702, the air pump 12 extracts gas through the ventilation hose 705, opening the air passage 706 and extracting the methane gas. This allows for venting without removing the drill rod 701, preventing methane gas leakage from the borehole. During excavation, the transmission assembly 6 switches to drive the excavation assembly 8, driving the excavation rod 801 to rotate and excavate a large area of ​​the coal seam. During excavation, the soil discharge pipe 806 simultaneously discharges loose soil. The transmission assembly 6 not only enables flexible switching and adjustment between the drilling and excavation processes, but also forms a combined integrated structure with the drilling assembly 7 and the excavation assembly 8. No equipment replacement is required during switching, enabling "exploration and excavation simultaneously," which greatly improves the efficiency of coal seam drilling and excavation, and effectively avoids methane leakage, thus improving drilling safety.

[0033] like Figure 6 As shown, a vent hole 7021 is provided through the front end face of the drill bit 702. The vent hole 7021 is connected to the air guide cavity 706. A plug 7022 is slidably installed in the vent hole 7021. A fixing plate 7023 is fixedly installed on the inner wall of the drill bit 702. A return spring 7024 is provided between the plug 7022 and the fixing plate 7023.

[0034] Specifically, during the drilling process of drill bit 702 into the coal seam, when no gas is detected, the air pump 12 does not start. At this time, the plug 7022, under the pushing action of the return spring 7024, will abut against the vent 7021, completely blocking the vent 7021 and preventing soil from entering the air guide channel 706 through the vent 7021 and causing blockage. When drill bit 702 penetrates the gas layer and detects gas, drill rod 701 immediately stops working. When the air pump 12 starts, it draws air from the air passage 706 using the vent hose 705, creating a negative pressure in the air passage 706. Under the suction of the negative pressure, the plug 7022 will overcome the pushing action of the return spring 7024 and slide out from the vent hole 7021. At this time, the gas can enter the air passage 706 through the vent hole 7021 and be discharged through the vent hose 705, thus realizing the automatic opening and closing function of the air passage 706.

[0035] It should be noted that the detection of methane gas is achieved using a methane sensor. The probe of the methane sensor is embedded in the drill bit 702, so that the methane detection function can be realized simultaneously during the drilling process of the drill bit 702. The methane sensor and its setting method are widely used in the field of coal mine drilling and are known in the existing technology, so they will not be described in detail here.

[0036] like Figure 5 As shown, the soil discharge pipe 806 includes an inner sleeve 8061 and an outer sleeve 8062 arranged coaxially. There is a certain gap between the outer wall of the inner sleeve 8061 and the inner wall of the outer sleeve 8062 to form a soil discharge channel. The two ends of the inner sleeve 8061 are fixedly connected to the outer sleeve 8062 through a connecting bracket 8063. A discharge spiral blade 8064 is provided on the outer wall of the inner sleeve 8061. The outer sleeve 8062 is coaxially fixed inside the excavation rod 801. The drilling rod 701 slides coaxially through the inner sleeve 8061.

[0037] Specifically, by setting up a soil discharge pipe 806, during the excavation process, the excavating rod 801 will drive the front end of the excavating disc 802 to rotate and dig into the coal seam. Since the outer sleeve 8062 is fixedly connected to the excavating rod 801, the excavating rod 801 will drive the soil discharge pipe 806 to rotate and move synchronously. The soil broken and dispersed by the excavating blades will enter the soil discharge channel between the inner sleeve 8061 and the outer sleeve 8062 through the through hole in the center of the excavating disc 802. The inner sleeve 8061 will rotate synchronously with the outer sleeve 8062. The continuously rotating discharge spiral blade 8064 will continuously transport loose soil to the rear until the soil is discharged from the tail end of the soil discharge pipe 806, thus realizing the soil discharge process synchronously during the excavation process.

[0038] like Figure 3As shown, the outer wall of the drill rod 701 is provided with a first clamping groove 703 and a first gear 704, and the outer wall of the excavation rod 801 is provided with a second clamping groove 804 and a second gear 805. The first gear 704 and the second gear 805 have the same number of teeth, and the outer diameters of the first gear 704 and the second gear 805 are equal.

[0039] like Figure 7 As shown, the transmission assembly 6 includes a transmission collar 601. An inner ring gear groove 602 is fixedly provided on the inner wall of the transmission collar 601. The inner ring gear meshes with the first gear 704 or the second gear 805. An outer ring gear 603 is fixedly provided on the outer wall of the transmission collar 601. A rotary motor 9 is fixedly provided on the side wall of the transverse support 5. A rotary gear 901 is provided at the output end of the rotary motor 9. The rotary gear 901 meshes with the outer ring gear 603. Several sets of electric slide rails 604 are evenly arranged circumferentially on the outer wall of the transmission collar 601. A positioning clamp 605 is slidably installed in each set of electric slide rails 604. The positioning clamp 605 corresponds to the first clamping groove 703 or the second clamping groove 804. All positioning clamps 605 slide radially synchronously to clamp and fix the drill rod 701 or the excavation rod 801.

[0040] Specifically, by setting up the transmission component 6, during the drilling process, the drive motor 3 drives the drive screw 4 to rotate, causing the transverse support 5 to perform linear displacement until the inner ring gear meshes with the first gear 704. At this time, the positioning clamp 605 moves radially and abuts against the first clamping groove 703, clamping and fixing the drill rod 701. The rotary motor 9 drives the rotary gear 901 to rotate. Since the outer ring gear 603 meshes with the rotary gear 901, the outer ring gear 603 will drive the transmission collar 60 1. The drilling rod 701 rotates as a whole, and in conjunction with the linear movement of the transverse support 5, the drilling rod 701 can rotate and drill. Similarly, during the excavation process, the transverse support 5 adjusts its displacement until the inner ring gear meshes with the second gear 805. At this time, the positioning clamp 605 abuts against the second clamping groove 804 to clamp and fix the excavating rod 801, thus realizing the rotational excavation process of the excavating rod 801. This allows for flexible switching of transmission between the drilling assembly 7 and the excavating assembly 8.

[0041] like Figure 8 As shown, the transmission collar 601 has rotating ring protrusions 606 extending outward at both ends, and the transverse support 5 has a limiting rotating groove 501 in the center. The rotating ring protrusions 606 are adapted to be rotatably installed in the limiting rotating groove 501.

[0042] Specifically, by utilizing the rotational engagement between the rotating ring protrusion 606 and the limiting rotating groove 501, the transmission collar 601 is constrained within the limiting rotating groove 501, enabling it to move synchronously with the transverse support 5. Furthermore, the transmission collar 601 can achieve an independent rotation process, thereby enabling the rotary tunneling process.

[0043] like Figure 2 As shown, a support slide rod 10 is fixedly installed between the side plates 2, the transverse support 5 is slidably installed on the support slide rod 10, and a collection box 11 is fixedly installed on the upper end of the base 1.

[0044] Specifically, the transverse support 5 slides on the support slide rod 10 during the linear movement. The function of the support slide rod 10 is to ensure the stability of the transverse support 5 during the displacement process. The collection box 11 can be used to collect and contain the loose soil discharged from the soil discharge pipe 806.

[0045] It should be noted that scale lines are provided on the outer surface of the support slide bar 10, so that the excavation depth of the drilling component 7 and the excavation component 8 can be directly monitored by the displacement change of the transverse support 5 before and after excavation.

[0046] The working principle of this invention is as follows: Figures 1-8As shown, during use, the base 1 is moved to the coal seam to be drilled and firmly fixed. During drilling, the drive motor 3 drives the drive screw 4 to rotate, causing the transverse support 5 to move linearly until the inner ring gear meshes with the first gear 704. At this time, the positioning clamp 605 moves radially and abuts against the first clamping groove 703, clamping and fixing the drill rod 701. The rotary motor 9 drives the rotary gear 901 to rotate, and the outer ring gear 603 drives the transmission collar 601 and the drill rod 701 to rotate as a whole. In conjunction with the linear movement of the transverse support 5, the rotary drilling process of the drill rod 701 can be realized. When the drill bit 702 detects methane gas during the tunneling process, the air pump 12 draws air through the ventilation hose 705, causing the air guide cavity 706 to open and draw out the methane gas, thus eliminating the need for extraction. The drilling rod 701 can achieve air venting; during the excavation process, the transverse support 5 is adjusted until the inner ring gear meshes with the second gear 805. At this time, the positioning clamp 605 abuts against the second clamping groove 804 to clamp and fix the excavating rod 801, which can realize the rotation excavation process of the excavating rod 801. The excavating rod 801 will drive the front end excavating disc 802 to rotate to achieve large-area excavation. The soil broken and dispersed by the digging blade will enter the soil discharge channel between the inner sleeve 8061 and the outer sleeve 8062 from the through hole in the center of the excavating disc 802. The inner sleeve 8061 will rotate synchronously with the outer sleeve 8062. The continuously rotating discharge spiral blade 8064 will continuously transport loose soil to the rear until the soil is discharged from the tail end of the soil discharge pipe 806. Thus, the soil discharge process can be realized simultaneously during the excavation process. The discharged soil will fall directly into the collection box 11 for collection.

[0047] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A drilling and excavation device for coal mining, comprising a base (1), wherein side plates (2) are fixedly connected to both ends of the base (1), characterized in that, A drive motor (3) is fixedly installed on one side plate (2), and a drive screw (4) is provided at the output end of the drive motor (3). A transverse support (5) is threadedly connected to the drive screw (4), and a transmission component (6) is provided in the center of the transverse support (5). A drilling component (7) and an excavation component (8) are provided on the other side plate (2). The drilling assembly (7) includes a drill rod (701), a drill bit (702) is fixedly installed at the front end of the drill rod (701), a gas guide channel (706) is provided inside the drill rod (701) along the axial direction, the tail end of the drill rod (701) is connected to one end of a ventilation hose (705) through a rotating connector (707), an air pump (12) is fixedly installed at the upper end of the base (1), the other end of the ventilation hose (705) is connected to the air pump (12), and the ventilation hose (705) is connected to the gas guide channel (706); The excavation assembly (8) includes an excavation rod (801), which is rotatably engaged with a rod sleeve on the side plate (2). An excavation disc (802) is fixedly installed at the front end of the excavation rod (801), and excavation cutter heads (803) are evenly arranged on the end face of the excavation disc (802). A soil discharge pipe (806) is fixedly installed inside the excavation rod (801) along the axial direction. The drilling rod (701) coaxially passes through the soil discharge pipe (806) and extends out from the center of the excavation disc (802). The transmission component (6) is successively connected to the drilling component (7) and the excavation component (8). The transmission component (6) first drives the drilling component (7) to tunnel into the coal seam and extract the gas. Then the transmission component (6) drives the excavation component (8) to tunnel into the coal seam and discharge the loose soil.

2. The excavation and drilling equipment for coal mining according to claim 1, characterized in that, A vent hole (7021) is provided through the front end face of the drill bit (702), the vent hole (7021) is connected to the air guide cavity (706), a plug (7022) is slidably installed in the vent hole (7021), a fixing plate (7023) is fixedly provided on the inner wall of the drill bit (702), and a return spring (7024) is provided between the plug (7022) and the fixing plate (7023).

3. The excavation and drilling equipment for coal mining according to claim 1, characterized in that, The soil discharge pipe (806) includes an inner sleeve (8061) and an outer sleeve (8062) arranged coaxially. There is a certain gap between the outer wall of the inner sleeve (8061) and the inner wall of the outer sleeve (8062) to form a soil discharge channel. The two ends of the inner sleeve (8061) are fixedly connected to the outer sleeve (8062) through a connecting frame (8063). A discharge spiral blade (8064) is provided on the outer wall of the inner sleeve (8061). The outer sleeve (8062) is coaxially fixed inside the excavation rod (801). The drilling rod (701) slides coaxially through the inner sleeve (8061).

4. The excavation and drilling equipment for coal mining according to claim 1, characterized in that, The drill rod (701) has a first clamping groove (703) and a first gear (704) on its outer wall, and the excavating rod (801) has a second clamping groove (804) and a second gear (805) on its outer wall. The first gear (704) and the second gear (805) have the same number of teeth, and the outer diameters of the first gear (704) and the second gear (805) are equal.

5. The excavation and drilling equipment for coal mining according to claim 4, characterized in that, The transmission assembly (6) includes a transmission collar (601), on the inner wall of which an inner ring gear groove (602) is fixedly provided. The inner ring gear meshes with a first gear (704) or a second gear (805). An outer ring gear (603) is fixedly provided on the outer wall of the transmission collar (601). A rotary motor (9) is fixedly provided on the side wall of the transverse support (5). A rotary gear (901) is provided at the output end of the rotary motor (9). The gear (901) meshes with the outer ring gear (603). Several sets of electric slide rails (604) are evenly arranged on the outer wall of the transmission collar (601) in the circumferential direction. Each set of electric slide rails (604) is slidably installed with a positioning clamp (605). The positioning clamp (605) corresponds to the first clamping groove (703) or the second clamping groove (804). All the positioning clamps (605) slide radially synchronously to clamp and fix the drill rod (701) or the excavation rod (801).

6. The excavation and drilling equipment for coal mining according to claim 5, characterized in that, The transmission collar (601) has rotating ring protrusions (606) extending outward at both ends. The transverse support (5) has a limiting rotating groove (501) in the center. The rotating ring protrusions (606) are adapted to be rotatably installed in the limiting rotating groove (501).

7. The excavation and drilling equipment for coal mining according to claim 1, characterized in that, A support slide rod (10) is fixedly installed between the side plates (2), the transverse support (5) is slidably installed on the support slide rod (10), and a collection box (11) is fixedly installed on the upper end of the base (1).

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