Drilling device and method for branch shaft blasting construction in mine

Abstract

The present application provides a mine branch chute blasting construction drilling device and method, belongs to the technical field of mine construction, and is used for solving the problem that the drilling angle of a drilling machine cannot be adjusted in the prior art. The drilling device comprises a drilling base, a drilling direction adjusting mechanism, a drilling transmission mechanism and a drilling feeding mechanism. The drilling direction adjusting mechanism adjusts the drilling direction. The drilling transmission mechanism comprises a drilling base plate, a drilling power source and a universal coupling. A plurality of transmission wheels are rotatably arranged on the drilling base plate. The transmission wheels comprise at least one driving wheel and a plurality of driven wheels. The position of the driving wheel is fixed, and the position of the driven wheel can be adjusted. The center of the driven wheel is provided with a through shaft hole. The shaft hole is in sliding fit with the drill rod and can drive the drill rod to rotate. Power is transmitted between the driving wheel, the driven wheel and the drilling power source. The drilling feeding mechanism provides extrusion force to the tail end of the drill rod. The present application combines the method to realize the adjustment of the drilling angle and solves the problem that the drilling angle of the drilling machine cannot be adjusted in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of mining construction technology, and in particular relates to a drilling device and method for blasting construction of branch ore passages in mines. Background Technology

[0002] Branch ore passes are important structures in underground mining, connecting the main pass to different sections and used for transporting ore or waste rock. As a key component of the mine's transportation system, the construction quality and efficiency of branch ore passes directly affect the mine's production capacity and safety.

[0003] To address the problems of low efficiency and difficulty in ensuring quality in traditional branch ore well construction, the applicant proposed a new construction method that combines drilling and blasting techniques to achieve efficient and precise construction of branch ore wells.

[0004] In actual construction, to ensure precise alignment between the branch ore pass and the main ore pass, before drilling the blasting borehole group for blasting, the applicant first drills a reference hole along the design axis of the branch ore pass. After the drill rod penetrates the soil through the reference hole and enters the main ore pass, the drilling angle of the drill rod is adjusted according to the deviation of the reference hole's axis relative to the design axis / center of the main ore pass, and the hole is re-drilled until the drilling meets the standard. Then, the remaining holes of the blasting borehole group are drilled parallel to the reference hole for blasting.

[0005] In the above process, in order to ensure the convenience of branch well construction, firstly, the drilling angle of the drilling rig must be adjustable, and secondly, in subsequent drilling, the blast holes of the blasting hole group must be kept parallel. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a drilling device and method for blasting construction of mine branch ore passes, which solves the problem that the drilling angle of the drilling rig cannot be adjusted in the prior art.

[0007] To achieve the above and other related objectives, the present invention provides a drilling device and method for blasting construction of branch ore passes in mines.

[0008] Among them, the drilling device for blasting construction of branch ore passages in mines includes a drilling base, a drilling direction adjustment mechanism, a drilling transmission mechanism and a drilling feed mechanism;

[0009] The drilling direction adjustment mechanism is connected between the drilling transmission mechanism and the drilling base, and adjusts the pitch angle of the drilling direction relative to the horizontal plane and the rotation angle about the vertical axis.

[0010] The drilling transmission mechanism includes a drilling base plate, a drilling power source, and a universal coupling. Multiple transmission wheels are rotatably arranged on the drilling base plate, and a transmission structure is provided on the outer periphery of the transmission wheels.

[0011] The transmission wheel includes at least one driving wheel and multiple driven wheels. The driving wheel is fixed at the position of the drilling substrate, and the driven wheels are adjustable at the position of the drilling substrate. The driven wheel has a through shaft hole at its center. The shaft hole has a polygonal cross-section and slides with the drill rod, and can drive the drill rod to rotate.

[0012] The driving wheel and the driven wheel are powered synchronously through the transmission structure, and the driving wheel and the drilling power source are powered through the universal coupling.

[0013] The drilling feed mechanism is rotatably connected to the tail end of the drill rod and provides extrusion force to the tail end of the drill rod.

[0014] Optionally, the drilling direction adjustment mechanism includes a rotary table and a pitch telescopic cylinder;

[0015] The rotating disk is rotatably mounted on the drilling base. The outer ring of the rotating disk is a gear ring. The drilling base is provided with a gear driven by a motor and meshing with the gear ring, thereby adjusting the rotation angle of the drilling direction around the vertical axis.

[0016] One side of the drilling base plate is directly hinged to the rotating disk, and the other side is hinged to the rotating disk through a pitch telescopic cylinder. The pitch angle of the drilling direction relative to the horizontal plane is adjusted by the extension amount of the pitch telescopic cylinder.

[0017] Optionally, the drilling feed mechanism includes a feed plate, which has the same structure as the drilling base plate and is arranged in parallel. The feed plate and the drilling base plate are also connected by a telescopic cylinder.

[0018] The feed plate is provided with feed abutment wheels, which correspond one-to-one with driven wheels. Each feed abutment wheel includes a feed wheel seat and a feed wheel body. The feed wheel seat is fixedly connected to the feed plate, and the feed wheel body is rotatably engaged with the feed wheel seat. The feed wheel body has a concave cavity on the side facing the drilling base plate. The cross-section of the concave cavity matches the drill rod, and the bottom surface of the concave cavity abuts against the tail end of the drill rod.

[0019] Optionally, the bottom of the concave cavity is penetrated through the feed abutment wheel, the cross-section of the penetration area is smaller than the cross-section of the concave cavity, and a pipe connector is rotatably connected to the end of the feed abutment wheel, with the cross-section of the penetration area located inside the pipe connector.

[0020] Optionally, the concave cavity is provided with a sealing groove at its edge, and a sealing membrane is provided at the opening of the sealing groove. Liquid is sealed inside the groove. When the concave cavity abuts against the end of the drill rod, the sealing membrane is pushed into the sealing groove.

[0021] Optionally, the universal coupling is a flexible shaft, with its two ends connected to the drive wheel and the output shaft of the drilling power source, respectively.

[0022] Alternatively, the universal coupling includes an input rod, an output rod, and a connecting rod, wherein the input rod and the connecting rod, and the connecting rod and the output rod are all connected by a cross hinge;

[0023] The cross hinge includes a cross rod and a hinge frame. There are two sets of cross rods. The two ends of one axis of each set of cross rods are rotatably connected to the hinge frame. The two sets of cross rods are located on both sides of the hinge frame. The two ends of the other axis of each set of cross rods are rotatably connected to the power input shaft and the power output shaft.

[0024] Optionally, the drilling substrate is provided with multiple parallel drive wheel mounting grooves, the mounting grooves including a main groove that penetrates the drilling substrate and auxiliary grooves located on both sides of the main groove;

[0025] The transmission wheel includes a rotating base and a rotating wheel body. The rotating wheel body is rotatably mounted on the rotating base. The rotating base has mounting holes around its perimeter, which are aligned with the auxiliary groove. The central area of ​​the rotating base is aligned with the main groove of the drilling substrate.

[0026] The installation position of the drive wheel can be adjusted along the mounting groove.

[0027] Optionally, the length of the connecting rod can be adjusted.

[0028] Optionally, the connecting rod is a telescopic cylinder, or the connecting rod is composed of two structural components connected together, and the overall length of the connecting rod is adjusted by adjusting the length of the mating area;

[0029] The connecting rod includes a first rod and a second rod. The first rod and the second rod have a mating area. The first rod has a row of threaded holes along its axis, and the second rod has a locking groove along its axis. After adjusting the mating area, the locking groove and the threaded holes are aligned. The first rod and the second rod are connected and fixed by bolts. The first rod has a sliding cavity at its center for the second rod to be inserted into. The sliding cavity has a threaded hole on one side and a through groove through the first rod on the other side. The threaded hole and through groove of the first rod are aligned with the locking groove of the second rod. The rod body on the through groove side of the first rod is the nut clamping surface, and the space between the clamping surface and the sliding cavity is a clamping body.

[0030] The transmission structure consists of chain teeth arranged around the circumference of the transmission wheels, and the transmission wheels are synchronized with each other via a chain.

[0031] The drilling method for blasting construction of branch ore passes in mines, using the drilling equipment for blasting construction of branch ore passes as described above, includes the following steps:

[0032] According to the design plan of the branch pass, the drilling device for blasting construction of the mine branch pass is set in the starting section and the drilling base of the drilling rig is initially adjusted to adjust the drilling angle.

[0033] The drilling base is equipped with only one drill rod. A reference hole is drilled from the branch chute to the main chute. After the drill rod enters the main chute, the drilling angle of the drill rod is adjusted according to its position in the main chute and the drill rod is re-drilled until it is aligned with the main chute.

[0034] After centering, the angle of the drilling base is fixed, and multiple drill rods are set on the drilling base according to the distribution of the blasting hole group, and parallel drilling is carried out to form the blasting hole group.

[0035] As described above, the drilling device and method for blasting construction of mine branch ore passes of the present invention have at least the following beneficial effects:

[0036] This significantly improves construction efficiency and quality. The drilling direction adjustment mechanism allows for flexible adjustment of the drilling angle, ensuring precise borehole alignment. The design of the drilling transmission mechanism guarantees stable power transmission and precise control of the drill rod, enabling parallel drilling of the blast holes. The drilling feed mechanism provides stable extrusion pressure to the drill rod, improving drilling efficiency. The overall device has a simple structure and is easy to operate, effectively solving the problem of non-adjustable drilling angles in existing technologies. Attached Figure Description

[0037] Figure 1 The diagram shown is an overall schematic diagram of the present invention.

[0038] Figure 2 The diagram shown is a partial schematic of the present invention.

[0039] Figure 3 The diagram shows the transmission relationship of the drilling substrate in this invention.

[0040] Figure 4 The diagram shown is a schematic diagram of the drilling substrate of the present invention.

[0041] Figure 5 The diagram shown is a schematic of the universal coupling of the present invention.

[0042] Figure 6 The diagram shown is a schematic of the driven wheel 85 of the present invention.

[0043] Figure 7 The diagram shown is a cross-sectional view of the universal coupling of the present invention.

[0044] Figure 8 This is a side view of the overall structure of the present invention.

[0045] Figure 9 The diagram shown is a side cross-sectional view of the drilling substrate and feed plate of the present invention.

[0046] Figure 10 This invention is shown as Figure 9 A magnified view of a portion of point D in the middle.

[0047] Figure 11 The diagram shown illustrates the working scenario of this invention.

[0048] The components include: drilling base 80, drilling base plate 81, main groove 811, auxiliary groove 812, power source 82, universal coupling 83, input rod 831, cross rod 8310, hinge frame 8312, connecting rod 832, threaded hole 8321, sliding cavity 8322, through groove 8323, locking groove 8326, clamping body 8327, output rod 833, driving wheel 84, driven wheel 85, rotating seat 851, rotating wheel body 852, rotating disk 90, pitch telescopic cylinder 91, feed plate 92, feed abutment wheel 93, feed wheel seat 930, concave cavity 931, sealing groove 932, sealing membrane 933, pipe connector 934, and feed wheel body 935. Detailed Implementation

[0049] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0050] Please see Figures 1 to 11 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0051] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0052] Please refer to this embodiment. Figure 1 The present invention provides a drilling device for blasting construction of branch ore passes in mines, used for constructing branch ore passes. For a better understanding of this device, please refer to [link to relevant documentation]. Figure 11First, let's briefly introduce the background related to the construction of branch ore passes. In underground mining, to improve ore transportation efficiency, the main ore pass 20 is typically used for the lowering and exiting of the primary section 21. The main ore pass 20 serves as the main channel for ore transportation, with its bottom connected to the transport equipment to ensure smooth ore transport. However, due to geographical limitations, the main ore pass 20 cannot be directly used for lowering other sections 22 in the mine. Therefore, branch ore passes are needed to guide the ore from these sections to the main ore pass 20. The construction of branch ore passes is a complex project. Since each section is located underground with complex geological conditions, the connection method of the branch ore passes must be designed and constructed based on detailed exploration results. During construction, the starting point of the branch ore pass is located in another section 22, while the exit point connects to the main ore pass 20. The entire branch ore pass is located deep underground. Furthermore, branch ore passes often extend at an angle, further increasing the difficulty of construction. Based on the above issues, the applicant adopted a blasting construction method, which, in simple terms, includes the following steps: determining the axis of a branch ore passage based on the positions of the main ore passage 20 and a certain intermediate section 22, with the branch ore passage connecting the main ore passage 20 and the certain intermediate section 22; using the design axis of the branch ore passage as a reference line 23, drilling a group of blasting holes from the intermediate section towards the main ore passage 20; filling the blasting hole group with explosive charges and detonating them, with the blasting debris falling into the main ore passage to form a branch ore passage.

[0053] In the above process, when determining the axis of the branch chute, it is essential to ensure that the axis of the branch chute intersects with the axis of the main chute 20. This ensures that the constructed branch chute is aligned with the main chute, preventing partial overlap. While the pitch angle error of the branch chute is not critical, the lateral angle error is crucial. To achieve this alignment requirement, before formal drilling, a reference hole 24 is drilled along the axis of the branch chute (design axis). The reference hole 24 penetrates the soil at a certain midpoint 22 and enters the main chute 20. The angle difference (mainly lateral deviation) between the axis of the reference hole 24 (actual construction axis) and the design axis is measured. A central plane can be determined using the axis of the main chute 20 and the design axis of the branch chute. The deviation between the actual construction axis and this plane is measured. Ideally, the actual construction axis should coincide with this plane. After adjusting the drilling angle based on the angle difference, the reference hole 24 is re-drilled until its axis (actual construction axis) is located in the central plane. Next, without changing the drilling angle of the drilling equipment, simply move the drilling equipment horizontally to drill the remaining holes of the blasting hole group parallel to the reference hole 24.

[0054] During the above process, when drilling reference hole 24, the drilling angle needs to be adjusted according to the measured parameters to ensure that the axis of reference hole 24 conforms to the axis of the branch chute. After the reference hole 24 is accurately drilled, more holes should be drilled in parallel with reference hole 24 to fill explosive cartridges for blasting.

[0055] This drilling device includes a drilling base 80, a drilling direction adjustment mechanism, a drilling transmission mechanism, and a drilling feed mechanism. The drilling base 80 is set in a certain middle section 22 according to the planning drawings and the results of the field survey. The initial drilling direction of the drilling direction adjustment mechanism is set according to the planned direction of the branch well, and then drilling is carried out.

[0056] In theory, as long as the drill pipe advances along the design axis of the branch well from a certain middle section towards the main well, when the drill pipe breaks through the borehole wall of the main well, its axis should be the same as the design parameters, that is, the drill pipe axis should be aligned with the main well, or in other words, the drill pipe axis should intersect the main well axis. This ensures that subsequent branch wells drilled using this borehole will accurately align with the main well. However, in reality, even if the design parameters are strictly followed during the initial drilling, situations often arise where the drill pipe is not aligned with the main well when it breaks through the borehole wall. If subsequent construction is based on this borehole, it may lead to misalignment between the branch well and the main well, or the branch well grazing the sidewall of the main well. The drilling direction adjustment mechanism is connected between the drilling transmission mechanism and the drilling base 80. Using the previous drilling result as a reference, the pitch angle of the drilling direction relative to the horizontal plane and the rotation angle around the vertical axis are adjusted for re-drilling until the drilled reference hole is aligned with the design axis of the branch well.

[0057] The drilling transmission mechanism includes a drilling base plate 81, a drilling power source 82, and a universal coupling 83. Multiple transmission wheels are rotatably arranged on the drilling base plate 81. The outer periphery of the transmission wheels is provided with a transmission structure, which can be chain teeth to form a sprocket, or a pulley, to synchronize power through a chain or belt.

[0058] The transmission wheel includes at least one driving wheel 84 and multiple driven wheels 85. The driving wheel 84 is fixed at the position of the drilling substrate 81, and the driven wheel 85 can be adjusted at the position of the drilling substrate 81. The driven wheel 85 has a through shaft hole at its center. The shaft hole has a polygonal cross section and slides with the drill rod, and can drive the drill rod to rotate.

[0059] The driving wheel 84 and the driven wheel 85 are synchronized through a transmission structure, and the driving wheel 84 and the drilling power source 82 are connected through a universal coupling 83.

[0060] The drilling feed mechanism is rotatably connected to the tail end of the drill pipe and provides extrusion force to the tail end of the drill pipe.

[0061] During drilling, the drive wheel 84 first drives a drill rod to drill. After the drill bit end with the drill rod emerges from the borehole wall of the main chute, the drilling direction is adjusted according to the position of the drill bit end in the main chute, and drilling is repeated until the drill rod axis is in the center of the main chute, that is, the drill rod axis intersects the axis of the main chute, and this angle is kept constant.

[0062] Then, the driving wheel 84 drives several driven wheels 85 to rotate, each driven wheel 85 carrying a drill rod. These drill rods drill parallel to each other into the branch ore pass. After drilling is completed, explosive charges are loaded into these holes and then detonated, thus forming the branch ore pass. This device simplifies the construction process, improves drilling efficiency, ensures that the axis of each blast hole conforms to the design parameters of the branch ore pass, and that the overall branch ore pass formed by the blasting meets design requirements and is accurately aligned with the main ore pass.

[0063] Further, please refer to Figure 1 , Figure 2 and Figure 8 The drilling direction adjustment mechanism includes a rotating disk 90 and a pitch telescopic cylinder 91. The rotating disk 90 is rotatably mounted on the drilling base 80. The outer ring of the rotating disk 90 is a gear ring. The drilling base 80 is provided with a gear driven by a motor and meshing with the gear ring, thereby adjusting the rotation angle of the drilling direction around the vertical axis. One side of the drilling base plate 81 is directly hinged to the rotating disk 90, and the other side is hinged to the rotating disk 90 through the pitch telescopic cylinder 91. The pitch angle of the drilling direction relative to the horizontal plane is adjusted by the extension amount of the pitch telescopic cylinder 91.

[0064] When the pitch extension cylinder 91 extends or retracts, the pitch angle of the drilling base plate 81 can be adjusted, thereby adjusting the pitch drilling angle of the drill rod. When the motor drives the rotating disk 90 to rotate, the lateral angle of the drilling base plate 81 can be adjusted, thereby adjusting the lateral drilling angle of the drill rod. If the drilling error is too large, it may be necessary to move the drilling base 80 and reposition the starting point. The initial drilling position and angle are determined by combining the positions of the main chute and branch chute with the actual survey results. After drilling from a certain section to the main chute, the drilling direction is adjusted appropriately according to the drill bit's exit from the main chute, and the hole is re-drilled to ensure that the drill rod can be connected to the axis of the main chute.

[0065] Please refer to this embodiment. Figures 8-10 The drilling feed mechanism includes a feed plate 92, which has the same structure as the drilling base plate and is arranged in parallel. The feed plate 92 and the drilling base plate are also connected by a telescopic cylinder. When the telescopic cylinder retracts, the distance between the feed plate 92 and the drilling base plate decreases. The feed plate 92 presses against the tail end of the drill rod and can provide extrusion force to the drill rod, which serves as the feed force for drilling.

[0066] In order to achieve the contact between the feed plate 92 and the tail end of the drill rod, the feed plate 92 is provided with a feed abutment wheel 93. The feed abutment wheel 93 corresponds one-to-one with the driven wheel 85. The feed abutment wheel 93 includes a feed wheel seat 930 and a feed wheel body 935. The feed wheel seat 930 is fixedly connected to the feed plate 92, and the feed wheel body 935 is rotatably engaged with the feed wheel seat 930. The feed wheel body 935 is provided with a concave cavity 931 on the side facing the drilling plate 81. The cross section of the concave cavity 931 matches the drill rod, and the bottom surface of the concave cavity 931 abuts against the tail end of the drill rod.

[0067] During operation, the tail end of the drill rod is pushed into the feed wheel body 935 through the concave cavity 931. When the driven wheel 85 drives the drill rod to rotate, the feed plate 92 abuts against the tail end of the drill rod through the feed wheel body 935. The tail end of the drill rod then rotates in conjunction with the feed wheel body 935 and the feed plate 92. This provides feed force to the drill rod while ensuring the rotational drilling of the drill rod.

[0068] This embodiment can be referred to. Figure 10 The bottom of the concave cavity 931 is penetrated on the feed abutment wheel 93. The cross section of the penetration area 939 is smaller than the cross section of the concave cavity 931. A pipe connector 934 is rotatably connected to the end of the feed abutment wheel 93. The cross section of the penetration area 939 is located inside the pipe connector 934.

[0069] In the above embodiment, when the drill rod tail end abuts against the concave cavity 931, the hollow structure inside the drill rod can communicate with the outside through the through area 939 and the pipe connector 934, thereby allowing coolant or abrasive materials to be passed into the drill rod, improving the drilling effect. The rotatable pipe connector 934 can be connected to a water pipe. During the rotation of the drill rod, the pipe connector 934 will not rotate, thus preventing the water pipe from twisting. (See reference...) Figure 1 The diagram shows the connecting pipe of pipe connector 934 at the tail ends of two drill rods.

[0070] Furthermore, such as Figure 10 As shown, the concave cavity 931 has a sealing groove 932 on its edge, and a sealing membrane 933 is provided at the opening of the sealing groove 932. The groove is filled with liquid. When the concave cavity 931 abuts against the end of the drill rod, the sealing membrane 933 is pushed into the sealing groove 932.

[0071] When the drill rod end is pushed into the sealing groove 932, it will squeeze the liquid in the concave cavity 931, and the hydraulic pressure will rise, which can tightly adhere to both sides of the drill rod end, thereby ensuring the sealing effect at the joint of the rotating rod, preventing coolant or other liquids from flowing out from the gap between the drill rod and the feed wheel 935, and preventing them from being effectively delivered to the drill bit through the hollow structure in the center of the drill rod.

[0072] This embodiment describes a specific configuration of the universal coupling 83. In one embodiment, the universal coupling 83 is a flexible shaft, with its two ends connected to the drive wheel 84 and the output shaft of the drilling power source 82, respectively. A flexible shaft is a shaft with low rigidity, elasticity, and the ability to bend freely for transmission. It is used to connect two shafts with different axes, not in the same direction, or with relative motion to transmit rotational motion and torque. It can flexibly transmit rotational motion and torque to any position.

[0073] Considering the limited torque transmission capability of flexible shafts, in another possible implementation, such as Figures 2-5 The universal coupling 83 includes an input rod 831, an output rod 833 and a connecting rod 832. The input rod 831 and the connecting rod 832, and the connecting rod 832 and the output rod 833 are all connected by a cross hinge.

[0074] The cross hinge includes a cross rod 8310 and a hinge frame 8312. There are two sets of cross rods 8310. The two ends of one axis of each set of cross rods 8310 are rotatably connected to the hinge frame 8312. The two sets of cross rods 8310 are located on both sides of the hinge frame 8312. The two ends of the other axis of each set of cross rods 8310 are rotatably connected to the power input shaft and the power output shaft.

[0075] In the above embodiment, at the cross hinge, the input rod 831 and connecting rod 832, as well as the output rod 833 and connecting rod 832, each have two degrees of rotational freedom in two directions. Through the cross hinges at both ends of the connecting rod 832, the universal coupling 83 as a whole has relatively rich degrees of freedom. The input rod 831 and output rod 833 have relatively flexible connection positions and connection angles, which can adapt to the changes in the axis of the drive wheel 84 caused by adjusting the pitch or rotation angle of the drilling base plate 81. In this way, the drilling angle can be adjusted without adjusting the entire drilling equipment, which facilitates the construction process.

[0076] Please refer to this embodiment. Figure 4 The drilling substrate 81 is provided with multiple parallel drive wheel mounting grooves, including a main groove 811 that penetrates the drilling substrate 81 and auxiliary grooves 812 located on both sides of the main groove 811.

[0077] The transmission wheel includes a rotating base 851 and a rotating wheel body 852. The rotating wheel body 852 is rotatably mounted on the rotating base 851. The rotating base 851 has mounting holes around its perimeter, which are aligned with the auxiliary groove 812. The central area of ​​the rotating base 851 is aligned with the main groove 811 of the drilling substrate 81. The relationship between the drill rod and the rotating wheel body 852 is that they can slide along the axis but cannot rotate relative to each other. During drilling, the rotating wheel body 852 drives the drill rod to rotate. A feed abutment mechanism is provided at the tail end of the drill rod to abut against the tail end of the drill rod to form a drilling feed force. The installation position of the transmission wheel can be adjusted along the mounting groove.

[0078] In the above embodiments, the main improvement is that the installation position of each transmission wheel can be adjusted as needed between each main groove 811 of the drilling substrate 81 and within the same main groove 811. The purpose is to adjust the mutual distance and arrangement relationship between each drill rod, so as to cope with different borehole group designs.

[0079] In this embodiment, the length of the connecting rod 832 is adjustable. The connecting rod 832 is a telescopic cylinder, or the connecting rod 832 is composed of two structural components connected together, and the overall length of the connecting rod 832 is adjusted by adjusting the length of the mating area.

[0080] Specifically, the connecting rod 832 includes a first rod and a second rod, and a mating area between the first and second rods. The first rod has a row of threaded holes 8321 along its axis, and the second rod has a locking groove 8326 along its axis. After adjusting the mating area, the locking groove 8326 and the threaded holes 8321 are aligned. The first and second rods are then connected and fixed by bolts. The center of the first rod has a sliding cavity 8322 for the second rod to be inserted. One side of the sliding cavity 8322 has a threaded hole 8321, and the other side has a through groove 8323 that penetrates the first rod. The threaded hole 8321 and the through groove 8323 of the first rod are aligned with the locking groove 8326 of the second rod. The rod body on the side of the through groove 8323 of the first rod serves as the nut clamping surface, and the space between the clamping surface and the sliding cavity 8322 is a clamping body 8327. When the length needs to be adjusted, the bolts are removed, the mating length between the first and second rods is adjusted, and then the bolts are inserted to tighten them into one unit. This method offers greater strength and better torque transmission performance compared to directly using a telescopic cylinder as the connecting rod 832.

[0081] This embodiment is an example of a drilling method for blasting construction of a branch mine pass, employing the above-mentioned drilling device for blasting construction of a branch mine pass, and including the following steps:

[0082] According to the design plan of the branch pass, a drilling device for blasting construction of the mine branch pass is set up in the starting section, and the drilling rig's drilling base is initially adjusted by 80 degrees to adjust the drilling angle, which is taken as the initial drilling angle. When setting the initial starting point and drilling angle, the design plan and geological survey results should be considered to ensure that the deviation is not too large, and to ensure that the drill pipe can be drilled out of the main pass so as to observe the drill pipe exit point and provide a reference for subsequent adjustment of the drill pipe's drilling angle and position.

[0083] During the initial drilling, only one drill rod is set on the drilling base 80, preferably at the center of the drilling base 80. A reference hole is drilled along the design axis of the branch chute to the main chute. After the drill rod enters the main chute, the drilling angle of the drill rod is adjusted according to its position in the main chute and the drill rod is re-drilled until it is aligned with the main chute.

[0084] After centering, fix the angle of the drilling base 80. According to the distribution of the blast hole group, set multiple drill rods on the drilling base 80 and drill in parallel to form the blast hole group. If the initial drill rod is located at the center of the drilling base 80, when drilling the blast hole group, the remaining drill rods should be set in parallel with the initial drill rod as the center. In this way, when drilling the blast hole group and blasting, it can be ensured that the axis of the branch ore formed by blasting is accurate and can be aligned with the main ore.

[0085] In summary, the present invention effectively overcomes the various shortcomings of the prior art, produces beneficial technical effects, and has made significant progress.

[0086] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A drilling device for blasting operations in a mine branch chute, characterized in that: It includes a drilling base, a drilling direction adjustment mechanism, a drilling transmission mechanism, and a drilling feed mechanism; The drilling direction adjustment mechanism is connected between the drilling transmission mechanism and the drilling base to adjust the pitch angle of the drilling direction relative to the horizontal plane and the rotation angle of the drilling direction about the vertical axis; the drilling direction adjustment mechanism includes a rotating disk and a pitch telescopic cylinder. The drilling transmission mechanism includes a drilling base plate, a drilling power source, and a universal coupling. Multiple transmission wheels are rotatably mounted on the drilling base plate, and a transmission structure is provided on the outer periphery of the transmission wheels. The universal coupling is a flexible shaft, with its two ends connected to the drive wheel and the output shaft of the drilling power source, respectively. The transmission wheel includes at least one driving wheel and multiple driven wheels. The driving wheel is fixed at the position of drilling into the substrate, and the driven wheels can be adjusted at the position of drilling into the substrate. A through shaft hole is provided in the center of the driven wheel. The shaft hole has a polygonal cross section and slides with the drill rod, and can drive the drill rod to rotate. The driving wheel and the driven wheel are synchronized through a transmission structure, and the driving wheel and the drilling power source are connected through a universal coupling. The drilling feed mechanism is rotatably connected to the tail end of the drill rod and provides extrusion force to the tail end of the drill rod; The drilling feed mechanism includes a feed plate, which has the same structure as the drilling base plate and is arranged in parallel. The feed plate and the drilling base plate are connected by a telescopic cylinder. The feed plate is provided with feed abutment wheels, which correspond one-to-one with driven wheels. Each feed abutment wheel includes a feed wheel seat and a feed wheel body. The feed wheel seat is fixedly connected to the feed plate, and the feed wheel body is rotatably engaged with the feed wheel seat. The feed wheel body has a concave cavity on the side facing the drilling base plate. The cross-section of the concave cavity matches the drill rod, and the bottom surface of the concave cavity abuts against the tail end of the drill rod.

2. The drilling device for blasting construction of branch ore passes in mines as described in claim 1, characterized in that: The rotating disk is rotatably mounted on the drilling base. The outer ring of the rotating disk is a gear ring. The drilling base is provided with a gear driven by a motor and meshing with the gear ring, thereby adjusting the rotation angle of the drilling direction around the vertical axis. One side of the drilling base plate is directly hinged to the rotating disk, and the other side is hinged to the rotating disk through a pitch telescopic cylinder. The pitch angle of the drilling direction relative to the horizontal plane is adjusted by the extension amount of the pitch telescopic cylinder.

3. The drilling device for blasting construction of branch ore passes in mines as described in claim 1, characterized in that: The bottom of the concave cavity is penetrated through the feed abutment wheel, and the cross-section of the penetration area is smaller than the cross-section of the concave cavity. A pipe connector is rotatably connected to the end of the feed abutment wheel, and the cross-section of the penetration area is located inside the pipe connector.

4. The drilling device for blasting construction of branch ore passes in mines as described in claim 3, characterized in that: The concave cavity has a sealing groove at its edge, and a sealing membrane is provided at the opening of the sealing groove. Liquid is sealed inside the groove. When the concave cavity abuts against the end of the drill rod, the sealing membrane is pushed into the sealing groove.

5. The drilling device for blasting construction of branch ore passes in mines as described in claim 1, characterized in that: The universal coupling includes an input rod, an output rod, and a connecting rod, and the input rod and the connecting rod, as well as the connecting rod and the output rod, are connected by a cross hinge. The cross hinge includes a cross rod and a hinge frame. There are two sets of cross rods. The two ends of one axis of each set of cross rods are rotatably connected to the hinge frame. The two sets of cross rods are located on both sides of the hinge frame. The two ends of the other axis of each set of cross rods are rotatably connected to the power input shaft and the power output shaft.

6. The drilling device for blasting construction of branch ore passes in mines as described in claim 1, characterized in that: The drilling substrate is provided with multiple parallel drive wheel mounting slots, the mounting slots including a main slot that penetrates the drilling substrate and auxiliary slots located on both sides of the main slot; The transmission wheel includes a rotating base and a rotating wheel body. The rotating wheel body is rotatably mounted on the rotating base. The rotating base has mounting holes around its perimeter, which are aligned with the auxiliary groove. The central area of ​​the rotating base is aligned with the main groove of the drilling substrate. The installation position of the drive wheel can be adjusted along the mounting groove.

7. The drilling device for blasting construction of branch ore passes in mines as described in claim 5, characterized in that: The length of the connecting rod is adjustable.

8. A drilling method for blasting construction of branch ore passes in mines, employing the drilling device for blasting construction of branch ore passes as described in claim 1, characterized in that, Includes the following steps: According to the design plan of the branch pass, the drilling device for blasting construction of the mine branch pass is set in the starting section and the drilling base of the drilling rig is initially adjusted to adjust the drilling angle. The drilling base is equipped with only one drill rod. A reference hole is drilled from the branch chute to the main chute. After the drill rod enters the main chute, the drilling angle of the drill rod is adjusted according to its position in the main chute, and the drill rod is re-drilled until it is aligned with the main chute. After alignment, the angle of the drilling base is fixed. According to the distribution of the blasting hole group, multiple drill rods are set on the drilling base and drilled in parallel to form a blasting hole group.

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