A coal mine rock splitting device

Abstract

This invention discloses a rock splitting device for coal mining, relating to the field of mining technology. It includes a mobile support frame, a hydraulic pump station, a longitudinal guide rail mechanism, a horizontal rotation drive mechanism, a tunneling and splitting mechanism, and a hydraulic propulsion mechanism. The mobile support frame is a frame structure supporting the aforementioned mechanisms. The hydraulic pump station transmits and controls pressure to the hydraulic pump body through high and low pressure oil pipes. The horizontal rotation drive mechanism drives the tunneling and splitting mechanism to rotate horizontally. The longitudinal guide rail mechanism guides the movement path of the drive motor. The hydraulic propulsion mechanism propels the tunneling and splitting mechanism, achieving the effect of the helical tunneling rod following and the splitting blocks tracking and splitting the borehole area. This invention, by setting up a tunneling and splitting mechanism and scientifically designing the connection mechanism between the drill bit, the helical tunneling rod, and the splitting blocks, greatly reduces the number of splitting operation steps in coal mining, effectively saves coal mining time, improves coal mining efficiency and accuracy, and reduces the workload of operators.

Description

Technical Field

[0001] This invention relates to the field of mining technology, and in particular to a rock splitting device for coal mining. Background Technology

[0002] With the modernization of mining in my country, the industrialization and intelligence of the mining production environment are constantly being upgraded. Currently, the coal mining industry typically uses mechanized mining and blasting methods to extract coal resources. During the mining process, it is often necessary to further break up large blocks of ore that hinder mining or to further divide large blocks of raw material. In order to improve the efficiency of breaking up and dividing, and at the same time to prevent gas leakage and shock, and to improve the safety level of mining in all aspects, mechanical crushing is often used for breaking up and dividing operations.

[0003] In existing mechanical crushing methods, hydraulic rock splitters are commonly used to divide and break up ores or blocks. A hydraulic rock splitter consists of several main parts, including a pump station, a drilling device, a splitting device, an adjusting device, and a hydraulic cylinder. Existing technologies such as the Chinese patent CN104612581B "Silent Rock Drilling and Splitting Integrated Machine" and the Chinese patent CN113356848A "Mining Auxiliary Splitting System" both require drilling multiple through holes in the ore or block material before the splitting process begins. These through holes must form linear circular openings. The drilling device is then removed, and an adjusting device controls the splitting device to drill into the relevant through holes. A pump station is activated, outputting high-pressure oil to drive a hydraulic cylinder, which moves the intermediate wedge towards the hole. The intermediate wedge generates thrust, pushing two opposing wedges apart, thus enlarging the drilled hole in the ore or block material. Utilizing the brittle nature of the ore or block material, when the wedges separate the through holes, the released strong splitting force quickly separates the ore or block material as a whole.

[0004] However, existing hydraulic rock splitters have the following drawbacks: they require drilling holes one by one using the drilling device, and the process of changing the drilling and splitting devices is cumbersome. This is not conducive to improving the accuracy of drilling and splitting operations, saving the overall time of the rock splitting process, or reducing the workload of the operator.

[0005] Therefore, there is an urgent need for a rock splitting device for coal mining that can solve the defects and problems existing in the current technology. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] In view of the shortcomings and deficiencies of existing technologies, this invention provides a rock splitting device for coal mining, featuring a modular design with fewer components, a simpler structure, and a high degree of modularity. By scientifically and rationally designing the connection mechanism between the drill bit, the auger, and the splitting blocks, the splitting operation steps for ore or raw blocks are reduced. The splitting blocks, with their cross-sectional width increasing linearly, improve the splitting efficiency of ore or raw blocks. The scientifically and rationally designed first and second force-applying heads increase the drilling speed. The through-hole coincides with the inner tangent circle of the outer limiting tube, allowing the inner limiting tube to pass through the positioning plate, thereby increasing the maximum drilling depth and accuracy of the drill bit.

[0008] This invention achieves the effect of spiral tunneling rod following and splitting block tracking the splitting borehole, which greatly reduces the splitting operation steps in coal mines, effectively saves coal mining time, improves coal mining efficiency and accuracy, reduces the workload of operators, and effectively solves the technical problems existing in the prior art mentioned in the background art.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the present invention employs a rock splitting device for coal mining, comprising: a movable support frame, a hydraulic pump station, a longitudinal guide rail mechanism, a horizontal rotation drive mechanism, a tunneling and splitting mechanism, and a hydraulic propulsion mechanism.

[0011] The mobile support frame is a frame structure with limit components and a buffer mechanism installed at the bottom. The hydraulic pump station is installed inside, and one side is equipped with a longitudinal guide rail mechanism, a horizontal rotation drive mechanism, a tunneling and splitting mechanism and a hydraulic propulsion mechanism.

[0012] The longitudinal guide rail mechanism includes: a guide rail, a stepper motor, a lead screw, and a movable seat. The back of the guide rail is fixedly connected to one side of the movable support frame. The stepper motor is located at the top of the guide rail. The output end of the stepper motor is threadedly connected to and drives the movable seat through the lead screw. The movable seat is slidably mounted on the guide rail.

[0013] The horizontal rotation drive mechanism is detachably connected to the movable seat. The horizontal rotation drive mechanism includes: a drive motor, a drive bevel gear, and a mounting end. One side of the drive motor is connected to the mounting end, and the output end of the drive motor is connected to the drive bevel gear.

[0014] The tunneling and splitting mechanism includes: a driven bevel gear, a splitting block, a spiral tunneling rod, and a drill bit. The tunneling and splitting mechanism meshes with a driving bevel gear through a driven bevel gear fixed at the top. The bottom of the driven bevel gear is coaxially fixedly connected to the top of the splitting block. The bottom of the splitting block is coaxially fixedly connected to the top of the spiral tunneling rod. The bottom of the spiral tunneling rod is coaxially fixedly connected to the top of the drill bit.

[0015] The hydraulic propulsion component includes a hydraulic pump body and a hydraulic rod. The side of the hydraulic pump body is fixedly connected to the top of the longitudinal guide rail mechanism, and the bottom of the hydraulic pump body is connected through the hydraulic rod. The bottom of the hydraulic rod is connected to the driven bevel gear bearing.

[0016] The hydraulic pump station is connected to the hydraulic pump body via high and low pressure oil pipes to transmit and control hydraulic pressure.

[0017] This invention discloses a rock splitting device for coal mining. By designing a connection mechanism between the drill bit, the auger, and the splitting block, the device reduces the number of steps required for splitting ore or raw blocks. The splitting block, with its cross-sectional width increasing linearly, improves the splitting efficiency of ore or raw blocks. The device also enhances drilling speed by incorporating a first and second force-applying head. Furthermore, the device's design, with the through-hole coinciding with the inner tangent circle of the outer limiting tube, increases the maximum drilling depth and accuracy. Finally, the device achieves the effect of the auger following the rock and the splitting block tracking the splitting drill hole, effectively solving the technical problems existing in the prior art.

[0018] Optionally, the cross-sectional outer contour of the splitting block is rhomboid, with the bottom cross-sectional outer contour having the smallest width and the top cross-sectional outer contour having the largest width, and the cross-sectional width increasing linearly, with the size increasing in the range of 6-30mm, thereby improving splitting efficiency.

[0019] Optionally, the external thread diameter of the auger tunneling rod increases linearly from bottom to top, with the bottom external thread diameter equal to the outer diameter of the drill bit and the top external thread diameter equal to the outer contour width of the splitting block cross-section. The external thread diameter of the auger tunneling rod increases in the range of 3-6 mm, thereby improving tunneling efficiency.

[0020] Optionally, the drill bit includes: a breaker head, a central breaker end, a first force-applying head, and a second force-applying head. The central breaker end is frustum-shaped, and its centerline is coaxial with the drill bit. The sides of the breaker head have chamfered cut surfaces. The breaker heads are arranged linearly at equal intervals about the axis of the drill bit. The first force-applying head is fixed at the bottom center of the breaker head, and the second force-applying head is fixed at the bottom center of the central breaker end. The first and second force-applying heads are elliptical, which increases pressure and improves drilling speed.

[0021] Optionally, a stabilizing frame is fixed to the side of the top of the guide rail, and the hydraulic pump body passes through the stabilizing frame; retaining grooves are respectively opened on the opposite inner walls of the guide rail, a retaining plate is integrally formed on one side of the movable seat, one side of the retaining plate is fitted with the guide rail, and a locking block is vertically fixed on the other side of the retaining plate; the movable seat and the mounting end are connected by bolts; the mounting end includes: a bayonet, a limiting plate and a threaded hole, the bayonet is set at one end of the drive motor, and the retaining groove is fitted with the limiting plate to maintain the movement path of the limiting plate.

[0022] Optionally, a connecting plate is fixedly connected to the top of the drive motor, a hydraulic rod passes through the connecting plate, and bearings are installed at the connection between the hydraulic rod and the connecting plate, as well as at the connection between the driven bevel gear and the connecting plate.

[0023] Optionally, a buffer mechanism is connected to the top end of the connecting plate. The buffer mechanism includes a balance plate, an inner limiting tube, an outer limiting tube, and a spring. Inner limiting tubes are fixedly installed at both ends of the bottom of the balance plate. An outer limiting tube is coaxially and tangentially connected to the outer wall of the inner limiting tube. The surfaces of the inner and outer limiting tubes are covered with a telescopic spring, which can buffer the movement of the connecting plate.

[0024] Optionally, the limiting component is a positioning plate, which is fixedly installed at one end of the bottom of the movable support frame. The top of the positioning plate has a through hole corresponding to the outer limiting tube. The through hole coincides with the inscribed circle of the outer limiting tube, so that the inner limiting tube passes through the positioning plate, thereby increasing the maximum drilling depth of the drill bit and maintaining the accuracy of the driving motor's moving path. The telescopic spring and the bottom of the outer limiting tube are both fixedly connected to the positioning plate.

[0025] Optionally, the bottom of the mobile support frame is provided with a support plate, and the hydraulic pump station is mounted on the support plate; at least three self-locking casters are installed at the bottom of one end of the mobile support frame.

[0026] Optionally, the hydraulic pump station includes: an oil tank, a power motor, an oil pressure gauge, and a pressure regulating handle. The power motor is installed on the top of the oil tank, the oil pressure gauge is installed on the side of the oil tank, and the pressure regulating handle is installed on the back of the oil tank. Driven by the power motor, the oil tank delivers hydraulic oil to the high and low pressure oil pipes.

[0027] (III) Beneficial Effects

[0028] This invention discloses a rock splitting device for coal mining. Compared with existing technologies, it features a modular design, fewer components, a simpler structure, and a high degree of modularity. This significantly reduces the number of splitting steps in coal mining, effectively saving mining time, improving mining efficiency and accuracy, and reducing operator workload. Specifically, this invention offers the following advantages:

[0029] 1. This invention, by setting up a tunneling and splitting mechanism and scientifically designing the connection mechanism between the drill bit, the auger tunneling rod, and the splitting block, enables the auger tunneling rod to follow and the splitting block to track and split the drilled part during the drilling process of the drill bit into the rock or block. This greatly reduces the number of steps in splitting the ore or block, effectively saves coal mining time, and improves coal mining efficiency.

[0030] 2. By setting a splitting block with a linearly increasing cross-sectional width, the present invention can enhance the splitting degree of the splitting block on the ore or block, improve the splitting efficiency of the ore or block, and increase the pressure per unit area of ​​the ore or block by direct contact between the first and second force-applying heads of the ellipsoid and the ore or block, thereby increasing the drilling speed.

[0031] 3. By setting the through hole to coincide with the inner circle of the outer limiting tube, the present invention enables the inner limiting tube to pass through the positioning plate, thereby increasing the maximum drilling depth of the drill bit and improving the drilling splitting strength. On the other hand, it also helps to maintain the accuracy of the drive motor's movement path. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the rock splitting device for coal mining according to the present invention;

[0033] Figure 2 This is a diagram of the drill bit connection mechanism of the present invention;

[0034] Figure 3 This is a diagram of the spiral tunneling rod mechanism of the present invention;

[0035] Figure 4 This is a diagram of the guide rail mechanism of the present invention;

[0036] Figure 5 For the present invention Figure 4 Enlarged view of A in the middle;

[0037] Figure 6 This is a side view of the present invention.

[0038] [Explanation of Labels in the Attached Image]

[0039] 1. Mobile support frame; 101. Casters; 2. Guide rail; 201. Retaining groove; 3. Stepper motor; 4. Lead screw; 5. Moving seat; 501. Retaining plate; 502. Locking block; 503. Docking hole; 6. Drive motor; 601. Bayonet; 602. Limiting plate; 603. Threaded hole; 604. Bolt; 7. Drive bevel gear; 8. Connecting plate; 9. Driven bevel gear; 10. Splitting block; 11. Spiral tunneling rod; 12. Drill bit; 121. Crusher head; 122. First force-applying head; 123. Central crushing end; 124. Second force-applying head; 13. Hydraulic rod; 14. Stabilizer frame; 15. Hydraulic pump body; 16. High and low pressure oil pipes; 17. Oil tank; 171. Oil pressure gauge; 172. Pressure adjustment handle; 18. Power motor; 19. Positioning plate; 20. Balance plate; 21. Inner limit tube; 22. Outer limit tube; 23. Telescopic spring. Detailed Implementation

[0040] To better explain and facilitate understanding of the present invention, a detailed description of the invention is provided below with reference to the accompanying drawings and specific embodiments. In this document, directional terms such as "up," "down," "left," and "right" are used interchangeably. Figure 1 The orientation is used as a reference.

[0041] A rock splitting device for coal mining includes: a movable support frame, a hydraulic pump station, a longitudinal guide rail mechanism, a horizontal rotation drive mechanism, a tunneling and splitting mechanism, and a hydraulic propulsion mechanism.

[0042] The mobile support frame is a frame structure with limit components and a buffer mechanism installed at the bottom. The hydraulic pump station is installed inside, and one side is equipped with a longitudinal guide rail mechanism, a horizontal rotation drive mechanism, a tunneling and splitting mechanism and a hydraulic propulsion mechanism.

[0043] The longitudinal guide rail mechanism includes: a guide rail, a stepper motor, a lead screw, and a movable seat. The back of the guide rail is fixedly connected to one side of the movable support frame. The stepper motor is located at the top of the guide rail. The output end of the stepper motor is threadedly connected to and drives the movable seat through the lead screw. The movable seat is slidably mounted on the guide rail.

[0044] The horizontal rotation drive mechanism is detachably connected to the movable seat. The horizontal rotation drive mechanism includes: a drive motor, a drive bevel gear, and a mounting end. One side of the drive motor is connected to the mounting end, and the output end of the drive motor is connected to the drive bevel gear.

[0045] The tunneling and splitting mechanism includes: a driven bevel gear, a splitting block, a spiral tunneling rod, and a drill bit. The tunneling and splitting mechanism meshes with a driving bevel gear through a driven bevel gear fixed at the top. The bottom of the driven bevel gear is coaxially fixedly connected to the top of the splitting block. The bottom of the splitting block is coaxially fixedly connected to the top of the spiral tunneling rod. The bottom of the spiral tunneling rod is coaxially fixedly connected to the top of the drill bit.

[0046] The hydraulic propulsion component includes a hydraulic pump body and a hydraulic rod. The side of the hydraulic pump body is fixedly connected to the top of the longitudinal guide rail mechanism, and the bottom of the hydraulic pump body is connected through the hydraulic rod. The bottom of the hydraulic rod is connected to the driven bevel gear bearing.

[0047] The hydraulic pump station is connected to the hydraulic pump body via high and low pressure oil pipes to transmit and control hydraulic pressure.

[0048] This invention discloses a rock splitting device for coal mining. By designing a connection mechanism between the drill bit, the auger, and the splitting block, the device reduces the number of steps required for splitting ore or raw blocks. The splitting block, with its cross-sectional width increasing linearly, improves the splitting efficiency of ore or raw blocks. The device also enhances drilling speed by incorporating a first and second force-applying head. Furthermore, the device's design, with the through-hole coinciding with the inner tangent circle of the outer limiting tube, increases the maximum drilling depth and accuracy. Finally, the device achieves the effect of the auger following the rock and the splitting block tracking the splitting drill hole, effectively solving the technical problems existing in the prior art.

[0049] To better understand the above technical solutions, the technical solutions in 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. These embodiments are intended to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. 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.

[0050] like Figure 1 The diagram shown is a three-dimensional representation of the present invention, comprising: a movable support frame 1, a hydraulic pump station, a longitudinal guide rail mechanism, a horizontal rotation drive mechanism, a tunneling and splitting mechanism, and a hydraulic propulsion component. The hydraulic pump station transmits and controls pressure to the hydraulic pump body 15 via high and low pressure oil pipes 16. The horizontal rotation drive mechanism drives the tunneling and splitting mechanism to rotate horizontally. In conjunction with the hydraulic propulsion component, the tunneling and splitting mechanism can simultaneously perform splitting operations during rock drilling, thereby improving splitting efficiency. The longitudinal guide rail mechanism includes a guide rail 2 and a stepper motor 3. The longitudinal guide rail mechanism guides the movement path of the drive motor 6. The output end of the stepper motor 3... A movable seat 5 is threadedly connected to a lead screw 4; a horizontal rotation drive mechanism is detachably connected to the movable seat 5. The horizontal rotation drive mechanism includes a drive motor 6 and a mounting end fixed to one side of the drive motor 6. The mounting end is connected to the movable seat 5 by bolts 604. The output end of the drive motor 6 is connected to a drive bevel gear 7. The tunneling and splitting mechanism meshes with the drive bevel gear 7 through a driven bevel gear 9 fixed at the top. The tunneling and splitting mechanism includes a splitting block 10 welded to the bottom of the driven bevel gear 9, a spiral tunneling rod 11, and a drill bit 12. The bottom of the splitting block 10 is coaxially welded to the top of the spiral tunneling rod 11, and the bottom of the spiral tunneling rod 11 is fixed to the drill bit 12.

[0051] The hydraulic pump station includes an oil tank 17, a power motor 18 is connected through the top of the oil tank 17, an oil pressure gauge 171 is installed on the side of the oil tank 17, a pressure regulating handle 172 is connected to one side of the oil tank 17, the oil tank 17 supplies oil to the high and low pressure oil pipes 16, and the power motor 18 generates hydraulic power.

[0052] The hydraulic propulsion component includes a hydraulic pump body 15, with a hydraulic rod 13 connected through the bottom of the hydraulic pump body 15. The bottom of the hydraulic rod 13 is connected to the bearing of the driven bevel gear 9. After the hydraulic pump body 15 is started, a tunneling force can be applied to the top of the driven bevel gear 9 through the hydraulic rod 13.

[0053] The rock splitting device also includes a movable support frame 1. A support plate is welded to the bottom of the movable support frame 1. The bottom of the hydraulic pump station is fixed to the movable support frame 1 through the support plate. The movable support frame 1 is a frame structure. At least three casters 101 are installed at the bottom of one end of the movable support frame 1. The casters 101 are self-locking rollers. The movable support frame 1 can improve the ease of movement of the splitting device. The self-locking casters 101 can quickly stop the movable support frame 1, which is convenient for parking and positioning of the splitting device. A positioning plate 19 is welded to one end of the movable support frame 1. A through hole is opened at the top of the positioning plate 19 facing the outer limit tube 22. The through hole coincides with the inner circle of the outer limit tube 22, which allows the inner limit tube 21 to pass through the positioning plate 19, increasing the maximum drilling depth that the drill bit 12 can drill. This is beneficial to improving the drilling and splitting strength. On the other hand, it is beneficial to maintain the accuracy of the movement path of the drive motor 6.

[0054] like Figure 5 The present invention is shown. Figure 4 In the enlarged view of A, the guide rail 2 limits the movement of the movable seat 5 on both sides. The two opposite inner walls of the guide rail 2 are respectively provided with retaining grooves 201. One side of the movable seat 5 is integrally formed with a retaining plate 501. A locking block 502 is vertically welded to the side of the retaining plate 501. A mating hole 503 is provided on the side of the locking block 502. The mating hole 503 and the threaded hole 603 are coaxially adapted and aligned to facilitate the connection between the bolt 604 and the movable seat 5 and the mounting end.

[0055] like Figure 3 The diagram shows the spiral tunneling rod mechanism of the present invention. The outer contour of the cross-section of the splitting block 10 is rhomboid. The outer contour of the bottom cross-section of the splitting block 10 has the smallest width and the outer contour of the top cross-section has the largest width. The cross-sectional width of the splitting block 10 increases linearly, which can enhance the splitting degree of the splitting block 10 on the ore block. The size increase range is 6-30mm, which improves the splitting efficiency of the ore. The installation end includes a bayonet 601, a limiting plate 602 and a threaded hole 603. The bayonet 601 is opened at one end of the drive motor 6. The limiting plate 602 is tangentially matched with the retaining groove 201, which can limit the movement path of the limiting plate 602 through the retaining groove 201.

[0056] The external thread diameter of the spiral tunneling rod increases linearly from bottom to top. The bottom external thread diameter is equal to the outer diameter of the drill bit, and the top external thread diameter is equal to the outer contour width of the cross-section of the splitting block. The external thread diameter of the spiral tunneling rod increases in the range of 3-6 mm, thereby improving tunneling efficiency.

[0057] like Figure 2 The diagram shows the drill bit connection mechanism of the present invention. The drill bit 12 includes: a crushing head 121 and a central crushing end 123, a first force-applying head 122 and a second force-applying head 124. The central crushing end 123 is frustum-shaped, and its center line is coaxial with the drill bit 12. The side of the crushing head 121 has a chamfered cut surface. The crushing heads 121 are arranged linearly at equal intervals about the central axis of the spiral tunneling rod 11. The first force-applying head 122 is welded to the middle position of the bottom of the crushing head 121, and the second force-applying head 124 is fixed to the middle position of the bottom of the central crushing end 123. Through the direct contact between the first force-applying head 122 and the second force-applying head 124 and the ore, the elliptical first force-applying head 122 and the second force-applying head 124 help to increase the pressure of the force per unit area on the ore and improve the drilling speed.

[0058] like Figure 4 The diagram shows the guide rail mechanism of the present invention. A stabilizer 14 is fixed to the side of the guide rail 2. The hydraulic pump body 15 passes through the interior of the stabilizer 14. A connecting plate 8 is fixed to the top of the drive motor 6. The hydraulic rod 13 moves through the connecting plate 8. Bearings are installed at the connection between the hydraulic rod 13 and the connecting plate 8, and at the connection between the driven bevel gear 9 and the connecting plate 8, respectively. This allows the driven bevel gear 9 to rotate relative to the hydraulic rod 13, so that the rotation of the driven bevel gear 9 does not affect the pressure applied by the hydraulic rod 13 to the connecting plate 8.

[0059] like Figure 6 The diagram shows a side view of the present invention. A buffer mechanism is connected to the top of the connecting plate 8. The buffer mechanism includes a balance plate 20. Inner limiting tubes 21 are welded to both ends of the bottom of the balance plate 20. An outer limiting tube 22 is coaxially and tangentially connected to the outer wall of the inner limiting tube 21. The surfaces of the inner limiting tube 21 and the outer limiting tube 22 are covered with a telescopic spring 23. Both the telescopic spring 23 and the outer limiting tube 22 are fixed to the positioning plate 19. The telescopic spring 23 can buffer the movement of the connecting plate 8.

[0060] The steps for using the rock splitting device for coal mining according to the present invention are as follows:

[0061] S1: Move the mobile support frame 1 to the ore to be split and brake each caster 101;

[0062] S2: Connect the external power supply, start the stepper motor 3, drive motor 6 and power motor 18, and adjust the pressure in the high and low pressure oil pipes 16 to the expected pressure through the pressure adjustment handle 172;

[0063] S3: Stepper motor 3 rotates through traction screw 4, thereby causing moving seat 5 to move vertically along the edge of guide rail 2. The output end of drive motor 6 drives drive bevel gear 7 to rotate, and drive bevel gear 7 further drives driven bevel gear 9 to rotate.

[0064] S4: The driven bevel gear 9 sequentially drives the splitting block 10, the spiral tunneling rod 11 and the drill bit 12 to rotate in the horizontal direction, so that the drill bit 12 can drill holes in the ore during its downward movement.

[0065] S5: When the height of the hole in the ore is greater than the sum of the heights of the spiral tunneling rod 11 and the drill bit 12, the fracture block 11 further expands and splits the hole, causing cracks to appear in the rock.

[0066] S6: Repeat the above steps until the ore is split into blocks that meet the volume requirements.

[0067] In step S2 above, the expected pressure is the component of the pressure generated by the hydraulic rod 13, which does not exceed the supporting force of the moving seat 5 on the drive motor 6, thereby reducing the degree of wear between the moving seat 5 and the lead screw 4.

[0068] It should be noted that in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise expressly specified. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0069] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," or "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this invention, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rock splitting device for coal mining, characterized in that... include: Mobile support frame, hydraulic pump station, longitudinal guide rail mechanism, horizontal rotation drive mechanism, tunneling and splitting mechanism, and hydraulic propulsion mechanism. The mobile support frame is a frame structure with limit components and a buffer mechanism installed at the bottom. The hydraulic pump station is installed inside, and one side is equipped with a longitudinal guide rail mechanism, a horizontal rotation drive mechanism, a tunneling and splitting mechanism and a hydraulic propulsion mechanism. The longitudinal guide rail mechanism includes: a guide rail, a stepper motor, a lead screw, and a movable seat. The back of the guide rail is fixedly connected to one side of the movable support frame. The stepper motor is located at the top of the guide rail. The output end of the stepper motor is threadedly connected to and drives the movable seat through the lead screw. The movable seat is slidably mounted on the guide rail. The horizontal rotation drive mechanism is detachably connected to the movable seat. The horizontal rotation drive mechanism includes: a drive motor, a drive bevel gear, and a mounting end. One side of the drive motor is connected to the mounting end, and the output end of the drive motor is connected to the drive bevel gear. The tunneling and splitting mechanism includes: a driven bevel gear, a splitting block, a spiral tunneling rod, and a drill bit. The tunneling and splitting mechanism meshes with a driving bevel gear through a driven bevel gear fixed at the top. The bottom of the driven bevel gear is coaxially fixedly connected to the top of the splitting block. The bottom of the splitting block is coaxially fixedly connected to the top of the spiral tunneling rod. The bottom of the spiral tunneling rod is coaxially fixedly connected to the top of the drill bit. The hydraulic propulsion component includes a hydraulic pump body and a hydraulic rod. The side of the hydraulic pump body is fixedly connected to the top of the longitudinal guide rail mechanism, and the bottom of the hydraulic pump body is connected through the hydraulic rod. The bottom of the hydraulic rod is connected to the driven bevel gear bearing. The hydraulic pump station is connected to the hydraulic pump body via high and low pressure oil pipes to transmit and control hydraulic pressure.

2. The rock splitting device for coal mining according to claim 1, characterized in that: The cross-sectional outer contour of the splitting block is rhomboid. The bottom cross-sectional outer contour of the splitting block has the smallest width, and the top cross-sectional outer contour has the largest width. The cross-sectional width increases linearly, with the size increasing from 6 to 30 mm, thereby improving splitting efficiency.

3. The rock splitting device for coal mining according to claim 2, characterized in that: The external thread diameter of the spiral tunneling rod increases linearly from bottom to top. The bottom external thread diameter is equal to the outer diameter of the drill bit, and the top external thread diameter is equal to the outer contour width of the cross-section of the splitting block. The external thread diameter of the spiral tunneling rod increases in the range of 3-6 mm, thereby improving tunneling efficiency.

4. The rock splitting device for coal mining according to claim 3, characterized in that: Preferably, the drill bit includes: a breaker head, a central breaker end, a first force-applying head, and a second force-applying head. The central breaker end is frustum-shaped, and its center line is coaxial with the drill bit. The sides of the breaker head have chamfered cut surfaces. The breaker heads are arranged linearly at equal intervals about the axis of the drill bit. The first force-applying head is fixed at the bottom center of the breaker head, and the second force-applying head is fixed at the bottom center of the central breaker end. The first and second force-applying heads are elliptical, which increases pressure and improves drilling speed.

5. The rock splitting device for coal mining according to claim 4, characterized in that: A stabilizing frame is fixed to the side of the top of the guide rail, and the hydraulic pump body passes through the stabilizing frame; retaining grooves are respectively opened on the opposite inner walls of the guide rail; a retaining plate is integrally formed on one side of the movable seat, one side of the retaining plate is fitted with the guide rail, and a locking block is vertically fixed on the other side of the retaining plate; the movable seat and the mounting end are connected by bolts; the mounting end includes: a bayonet, a limiting plate and a threaded hole; the bayonet is set at one end of the drive motor; the retaining groove is fitted with the limiting plate to maintain the movement path of the limiting plate.

6. The rock splitting device for coal mining according to claim 5, characterized in that: A connecting plate is fixedly connected to the top of the drive motor, and a hydraulic rod passes through the connecting plate. Bearings are installed at the connection points of the hydraulic rod and the connecting plate, as well as at the connection points of the driven bevel gear and the connecting plate.

7. The rock splitting device for coal mining according to claim 6, characterized in that: A buffer mechanism is connected to the top end of the connecting plate. The buffer mechanism includes a balance plate, an inner limiting tube, an outer limiting tube, and a spring. Inner limiting tubes are fixedly installed at both ends of the bottom of the balance plate. An outer limiting tube is coaxially and tangentially connected to the outer wall of the inner limiting tube. The surfaces of the inner and outer limiting tubes are covered with a telescopic spring, which can buffer the movement of the connecting plate.

8. The rock splitting device for coal mining according to claim 7, characterized in that: The limiting component is a positioning plate, which is fixedly installed at one end of the bottom of the movable support frame. The top of the positioning plate has a through hole corresponding to the outer limiting tube. The through hole coincides with the inscribed circle of the outer limiting tube, so that the inner limiting tube passes through the positioning plate, thereby increasing the maximum drilling depth of the drill bit and maintaining the accuracy of the driving motor's moving path. The telescopic spring and the bottom of the outer limiting tube are both fixedly connected to the positioning plate.

9. The rock splitting device for coal mining according to claim 8, characterized in that: The bottom of the mobile support frame is provided with a support plate, and the hydraulic pump station is installed on the support plate; at least three self-locking casters are installed at the bottom of one end of the mobile support frame.

10. The rock splitting device for coal mining according to claim 9, characterized in that: The hydraulic pump station includes an oil tank, a power motor, an oil pressure gauge, and a pressure regulating handle. The power motor is installed on the top of the oil tank, the oil pressure gauge is installed on the side of the oil tank, and the pressure regulating handle is installed on the back of the oil tank. Driven by the power motor, the oil tank delivers hydraulic oil to the high and low pressure oil pipes.

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