Mine branch draw shaft blasting construction drilling device and method

Abstract

The invention provides a mine branch draw shaft blasting construction drilling device and method, belongs to the technical field of mine construction, and aims to solve 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 rotationally arranged on the drilling base plate and comprise at least one driving wheel and a plurality of driven wheels, the positions of the driving wheels are fixed, the positions of the driven wheels can be adjusted, and through shaft holes are formed in the centers of the driven wheels; the shaft hole is in sliding fit with the drill rod and can drive the drill rod to rotate; power is transmitted among the driving wheel, the driven wheel and the drilling power source; the drilling feeding mechanism provides extrusion force for the tail end of the drill rod. The device is combined with the method to adjust the drilling angle, and the problem that the drilling angle of a drilling machine in the prior art cannot be adjusted is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of mine construction, and in particular relates to a drilling device and method for blasting construction of a mine branch chute. Background Art

[0002] Branch chutes are important structures in underground mining. They connect the main chutes with different middle sections and are used to transport ore or waste rock. As a key component of the mine transportation system, the construction quality and efficiency of branch chutes directly affect the production capacity and safety of the mine.

[0003] In order to solve the problems of low efficiency and difficulty in ensuring quality in the construction of traditional branch chutes, the applicant proposed a new construction method that combines drilling and blasting technology to achieve efficient and precise construction of branch chutes.

[0004] In the actual construction process, in order to accurately connect the branch chute with the main chute, before the official drilling of the blasting hole group, the applicant first drilled a reference hole along the design axis of the branch chute. After the drill rod penetrated the soil from the reference hole and entered the main chute, the drilling angle of the drill rod was adjusted according to the deviation of the axis of the reference hole relative to the design axis / center of the main chute, and the hole was re-drilled until the hole met the standard. Then the remaining holes of the blasting hole group were drilled parallel to the reference hole for blasting.

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

[0006] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a drilling device and method for blasting construction of a mine branch chute, which is used to solve the problem that the drilling angle of the drilling rig in the prior art cannot be adjusted.

[0007] In order to achieve the above-mentioned purpose and other related purposes, the present invention provides a drilling device and method for blasting construction of a mine branch chute.

[0008] Among them, the drilling device for blasting construction of branch chute in mine 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 around the vertical axis; 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, and a transmission structure is arranged on the outer periphery of the transmission wheel; The transmission wheel includes at least one driving wheel and a plurality of driven wheels, wherein the driving wheel is fixed at the position of the drilling substrate, and the position of the driven wheel can be adjusted. A through shaft hole is arranged at the center of the driven wheel, and the shaft hole has a polygonal cross section. The shaft hole is slidably matched with the drill rod and can drive the drill rod to rotate; The driving wheel and the driven wheel are synchronized with each other through the transmission structure, and the driving wheel and the drilling power source are transmitted with power through the universal coupling; The drilling feeding mechanism is rotatably connected to the rear end of the drill rod and provides extrusion force to the rear end of the drill rod.

[0009] Optionally, the drilling direction adjustment mechanism includes a rotating disk and a pitch telescopic cylinder; The rotating disk is rotatably mounted on the drilling base, the outer ring of the rotating disk is a gear ring, and the drilling base is provided with a gear driven by a motor and meshing with the gear ring, so as to adjust 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.

[0010] Optionally, the drilling feed mechanism comprises a feed plate, the feed plate has the same structure as the pitch plate and is arranged in parallel, and the feed plate and the pitch plate are also connected via a telescopic cylinder; A feed abutment wheel is provided on the feed plate, and the feed abutment wheel corresponds to the driven wheel one by one. The 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 matched with the feed wheel seat. A concave cavity is provided on the side of the feed wheel body facing the drilling substrate, and the cross-section of the concave cavity matches the drill rod, and the bottom surface of the concave cavity abuts against the rear end of the drill rod.

[0011] Optionally, the bottom of the concave cavity is penetrated on the feed abutment wheel, and the cross-section of the penetration area is smaller than the cross-section of the concave cavity. The end of the feed abutment wheel is rotatably connected to a pipe connector, and the cross-section of the penetration area is located inside the pipe connector.

[0012] Optionally, a sealing groove is provided at the edge of the inner concave cavity, a sealing film is provided at the notch of the sealing groove, liquid is encapsulated in the groove, and when the inner concave cavity abuts against the rear end of the drill pipe, the sealing film is pushed into the sealing groove.

[0013] Optionally, the universal coupling is a flexible shaft, with two ends respectively connected to the driving wheel and the output shaft of the drilling power source; Or, the universal coupling comprises an input rod, an output rod and a connecting rod, and the input rod and the connecting rod, and the connecting rod and the output rod are connected via a cross hinge; The cross hinge includes a cross rod and an articulated frame. The cross rod is divided into two groups. Both ends of an axis of each of the two groups of cross rods are rotatably connected to the articulated frame. The two groups of cross rods are respectively located on both sides of the articulated frame. Both ends of another axis of each of the two groups of cross rods are rotatably connected to the power input shaft and the power output shaft.

[0014] Optionally, a plurality of parallel transmission wheel mounting grooves are provided on the drilling substrate, and the mounting grooves include a main groove penetrating the drilling substrate and auxiliary grooves located on both sides of the main groove; The transmission wheel comprises a rotating seat and a rotating wheel body, wherein the rotating wheel body is rotatably mounted on the rotating seat, mounting holes are arranged around the rotating seat, the mounting holes are aligned with the auxiliary grooves, and the central area of ​​the rotating seat is aligned with the main groove for drilling the substrate; The installation position of the transmission wheel can be adjusted along the installation groove.

[0015] Optionally, the length of the connecting rod is adjustable.

[0016] Optionally, the connecting rod is a telescopic cylinder, or the connecting rod is formed by connecting two structural members, and the overall length of the connecting rod is adjusted by adjusting the length of the matching area; The connecting rod comprises a first rod and a second rod, wherein a row of threaded holes are arranged on the first rod along the axis in the matching area of ​​the first rod and the second rod, and a locking groove is arranged on the second rod along the axis. After adjusting the matching area, the locking groove and the threaded hole are aligned, and the first rod and the second rod are connected and fixed by bolts, and a sliding cavity for inserting the second rod is arranged at the center of the first rod, and a threaded hole is arranged on one side of the sliding cavity, and a through groove penetrating the rod body of the first rod is arranged on the other side, and the threaded hole and the through groove of the first rod are aligned with the locking groove of the second rod, and the rod body on one side of the through groove of the first rod is a nut pressing surface, and a pressing body is between the pressing surface and the sliding cavity; The transmission structure is a sprocket disposed on the circumference of the transmission wheel, and the transmission wheels are synchronized by chains.

[0017] The method for drilling holes by blasting construction of a branch chute of a mine adopts the drilling hole device for blasting construction of a branch chute of a mine as described above, and comprises the following steps: According to the design plan of the branch chute, the mine branch chute blasting construction drilling device is set at the drilling section and the drilling base of the drilling rig is preliminarily adjusted to adjust the drilling angle; The drilling base is provided with only one drill rod, and a reference hole is drilled toward the main well along the design axis of the branch well. After the drill rod penetrates the main well, the drilling angle of the drill rod is adjusted according to the position of the drill rod in the main well and the drill is re-entered until the drill rod is aligned with the main well. After centering, the angle of the drilling base is fixed, and according to the distribution of the blasting hole group, a plurality of drill rods are arranged on the drilling base to form a blast hole group by parallel drilling.

[0018] As described above, the drilling device and method for blasting construction of a mine branch chute of the present invention have at least the following beneficial effects: Significantly improves construction efficiency and quality. Through the drilling direction adjustment mechanism, the drilling angle can be flexibly adjusted to ensure accurate docking of the drill holes. The design of the drilling transmission mechanism ensures the stable transmission of power and the precise control of the drill rod, and realizes the parallel drilling of the blastholes. The drilling feed mechanism provides a stable extrusion force for the drill rod, which improves the drilling efficiency. The overall device has a simple structure and is easy to operate, which effectively solves the problem of the non-adjustable drilling angle of the drilling rig in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is an overall schematic diagram of the present invention.

[0020] Figure 2 Shown is a partial schematic diagram of the present invention.

[0021] Figure 3 It shows a schematic diagram of the transmission relationship of drilling into the substrate of the present invention.

[0022] Figure 4 Shown is a schematic diagram of drilling into a substrate according to the present invention.

[0023] Figure 5 Shown is a schematic diagram of the universal coupling of the present invention.

[0024] Figure 6 Shown is a schematic diagram of the driven wheel 85 of the present invention.

[0025] Figure 7 Shown is a schematic cross-sectional view of the universal coupling of the present invention.

[0026] Figure 8 It is a side overall schematic diagram of the present invention.

[0027] Fig. 9 Shown is a side cross-sectional schematic diagram of a drilling base plate and a feed plate of the present invention.

[0028] Fig.10 Shown as the present invention Fig. 9 A partial enlarged schematic diagram of point D in the middle.

[0029] Fig.11 Shown is a schematic diagram of the working scenario of the present invention.

[0030] Among them: drilling base 80, drilling base plate 81, main groove 811, auxiliary groove 812, feed power source 82, universal joint 83, input rod 831, cross rod 8310, articulated frame 8312, connecting rod 832, threaded hole 8321, sliding cavity 8322, through groove 8323, locking groove 8326, pressing body 8327, output rod 833, driving wheel 84, driven wheel 85, rotating seat 851, rotating wheel body 852, rotating disk 90, pitch and telescopic cylinder 91, feed plate 92, feed abutment wheel 93, feed wheel seat 930, concave cavity 931, sealing groove 932, sealing film 933, pipe connector 934, feed wheel body 935. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] See also Figures 1 to 11 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0033] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0034] For this example, please refer to Figure 1 The drilling device for blasting construction of a branch chute in a mine provided by the present invention is used for constructing a branch chute. For easier understanding of the device, please refer to Fig.10First, let's briefly introduce the background related to the construction of branch chutes. In the process of underground mining, in order to improve the efficiency of ore transportation, a middle section 21 usually uses the main chute 20 to lower and transport the ore. The main chute 20 is the main channel for ore transportation, and its bottom is connected to the transportation equipment to ensure that the ore can be transported out smoothly. However, for other middle sections 22 in the mine, due to geographical restrictions, the main chute 20 cannot be used directly to lower the ore. Therefore, it is necessary to set up branch chutes to guide the ore in these middle sections to the main chute 20. The setting of branch chutes is a complicated project. Since each middle section is located underground and the geological conditions are complex, the connection method of the branch chute must be designed and constructed according to detailed exploration results. During the construction process, the starting end of the branch chute is located in the other middle section 22, and the outlet end is connected to the main chute 20. The entire branch chute is deep underground. In addition, the branch chute often extends obliquely, which further increases the difficulty of construction. Based on the above problems, the applicant adopted a blasting construction method, which, in brief, includes the following steps: according to the positions of the main chute 20 and a certain middle section 22, the axis of the branch chute is determined, and the branch chute connects the main chute 20 and a certain middle section 22; with the designed axis of the branch chute as the reference line 23, a blasting hole group is drilled from the middle section to the main chute 20; blasting cartridges are filled into the blasting hole group and detonated, and the blasting debris falls into the main chute to form a branch chute.

[0035] In the above process, when determining the axis of the branch chute, it is necessary to ensure that the axis of the branch chute intersects with the axis of the main chute 20, so that the constructed branch chute can be aligned with the main chute to prevent the main chute and the branch chute from only partially overlapping. Of course, the error of the pitch angle of the branch chute is not important; what is important is the error of the lateral angle of the branch chute. In order to achieve the above alignment requirements, before the formal drilling, a reference hole 24 is first drilled along the axis (design axis) of the branch chute. The reference hole 24 penetrates the soil from a certain middle section 22 and enters the main chute 20. The angle difference (mainly lateral deviation) of the axis (actual construction axis) of the reference hole 24 relative to the design axis is measured. A central plane can be determined by the axis of the main chute 20 and the design axis of the branch chute, and the deviation of the actual construction axis from the plane is measured. Ideally, the actual construction axis should coincide with the plane. After adjusting the drilling angle of the drilling equipment according to the angle difference, the reference hole 24 is re-drilled until the axis (actual construction axis) of the reference hole 24 is located in the central plane. Next, the drilling angle of the drilling equipment is not changed, and the drilling equipment is only translated to drill the remaining holes of the blasting hole group parallel to the reference hole 24 .

[0036] During the above process, when drilling the reference hole 24, it is necessary to adjust the drilling angle according to the measured parameters to ensure that the axis of the reference hole 24 is consistent with the axis of the branch chute; after the reference hole 24 is accurately drilled, more holes should be drilled in parallel with the reference hole 24 to fill the explosive cartridges for blasting.

[0037] The 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 field survey results. The initial drilling direction of the drilling direction adjustment mechanism is set according to the planned direction of the branch chute, and then drilling is carried out.

[0038] Theoretically, as long as the drill rod is drilled from a certain middle section to the main well along the design axis of the branch well, when the drill rod breaks through the hole wall of the main well, its axis should be the same as the design parameter, that is, the drill rod axis is aligned with the main well, or the drill rod axis crosses the main well axis. In this way, when the subsequent drilling is carried out, the branch well formed can be accurately docked with the main well. However, the actual situation is that although the design parameters are strictly followed during the initial drilling, the drill rod and the main well are often not aligned when the drill rod breaks through the hole wall of the main well. If the subsequent construction is based on the drilling, it may cause the branch well obtained by the construction to be not aligned with the main well, and the branch well may pass through the side wall of the main well. The drilling direction adjustment mechanism is connected between the drilling transmission mechanism and the drilling base 80. With reference to the previous drilling result, the drilling direction pitch angle relative to the horizontal plane and the rotation angle around the vertical axis are adjusted to re-drill until the reference hole drilled is consistent with the design axis of the branch well.

[0039] The drilling transmission mechanism includes a drilling base plate 81, a drilling power source 82 and a universal coupling 83. A plurality of transmission wheels are rotatably arranged on the drilling base plate 81. A transmission structure is arranged on the outer periphery of the transmission wheel, which may be a sprocket to form a sprocket or a pulley to synchronize power through a chain or a belt; The transmission wheel includes at least one driving wheel 84 and a plurality of driven wheels 85. The driving wheel 84 is fixed at the position of the drilling substrate 81, and the position of the driven wheel 85 at the drilling substrate 81 can be adjusted. A through shaft hole is arranged at the center of the driven wheel 85. The shaft hole has a polygonal cross section. The shaft hole is slidably matched with the drill rod and can drive the drill rod to rotate. The driving wheel 84 and the driven wheel 85 are synchronized by a transmission structure, and the driving wheel 84 and the drilling power source 82 are transmitted by a universal coupling 83; The drilling feed mechanism is rotatably connected to the rear end of the drill rod and provides extrusion force to the rear end of the drill rod.

[0040] During drilling, the driving wheel 84 first drives a drill rod to drill, and after the drill bit end of the drill rod drills out of the hole wall of the main chute, the drilling direction is adjusted according to the position of the drill bit end in the main chute, and the hole is drilled again until the drill axis is in the middle of the main chute, that is, the drill rod axis intersects with the axis of the main chute, and the angle is kept unchanged; Then, the driving wheel 84 drives the remaining multiple driven wheels 85 to rotate, and each driven wheel 85 has a drill rod, and these drill rods are drilled into the branch chute in parallel with each other. After the drilling is completed, blasting cartridges are loaded into these holes and then detonated to form a branch chute. Through the above-mentioned device, the construction process can be simplified, the drilling efficiency can be improved, and it can be ensured that the axis of a single blast hole during construction meets the design parameters of the branch chute, and the overall branch chute formed by the blasting of the blast hole meets the design requirements and is accurately aligned with the main chute.

[0041] For further information, see Figure 1 , Figure 2 and Figure 7 The drilling direction adjustment mechanism includes a rotating disk 90 and a pitch telescopic cylinder 91; the rotating disk 90 is rotatably installed on the drilling base 80, the outer ring of the rotating disk 90 is a gear ring, and the drilling base 80 is provided with a gear driven by a motor and meshing with the gear ring, so as to adjust 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, and the pitch angle of the drilling direction relative to the horizontal plane is adjusted by the extension amount of the pitch telescopic cylinder 91.

[0042] When the pitch telescopic cylinder 91 is extended and retracted, the pitch angle of the drilling base 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 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 position and angle of the initial drilling are determined by the position of the main chute and the branch chute, combined with the actual survey results. After drilling from a certain middle section to the main chute, the drilling direction is appropriately adjusted according to the situation of the drill bit drilling out of 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.

[0043] For this example, please refer to Figure 7-Figure 9 The drilling feed mechanism includes a feed plate 92. The feed plate 92 has the same structure as the pitch plate and is arranged in parallel. The feed plate 92 and the pitch plate are also connected by a telescopic cylinder. When the telescopic cylinder contracts, the distance between the feed plate 92 and the pitch plate decreases. The feed plate 92 presses against the rear end of the drill rod and can provide a squeezing force to the drill rod, which serves as a feed force for drilling. In order to achieve the abutment of the feed plate 92 against the rear end of the drill rod, a feed abutment wheel 93 is provided on the feed plate 92. The feed abutment wheel 93 corresponds to the driven wheel 85 one by one. 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 matched with the feed wheel seat 930. The feed wheel body 935 is provided with a concave cavity 931 on the side facing the drilling substrate 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 rear end of the drill rod.

[0044] During operation, the rear end of the drill rod is pushed into the feed wheel body 935 from the inner concave cavity 931. When the driven wheel 85 drives the drill rod to rotate, the feed plate 92 abuts against the rear end of the drill rod through the feed wheel body 935, and the rear end of the drill rod rotates and cooperates with the feed wheel body 935 and the feed plate 92. Thus, the feed force is provided to the drill rod, and the rotation drilling of the drill rod is ensured.

[0045] This embodiment can be found in Fig. 9 On the feed abutment wheel 93 , the bottom of the concave cavity 931 is penetrated, the cross-section of the penetration area 939 is smaller than the cross-section of the concave cavity 931 , the end of the feed abutment wheel 93 is rotatably connected with a pipe connector 934 , and the cross-section of the penetration area 939 is located inside the pipe connector 934 .

[0046] In the above embodiment, when the rear end of the drill rod abuts against the inner concave cavity 931, the hollow structure inside the drill rod can be connected to the outside through the penetration area 939 and the pipe connector 934, so that coolant or abrasive materials can be passed through the drill rod to improve the drilling effect. The rotatably connected pipe connector 934 can be connected to a water pipe. During the rotation of the drill rod, the pipe connector 934 will not rotate, thereby preventing the water pipe from twisting. Figure 1 , the tail ends of two drill pipes in the modified figure illustrate the connecting pipes of the pipe connector 934.

[0047] Furthermore, if Fig. 9 As shown, a sealing groove 932 is provided at the edge of the inner concave cavity 931 , a sealing film 933 is provided at the notch of the sealing groove 932 , and liquid is encapsulated in the groove. When the inner concave cavity 931 abuts against the rear end of the drill pipe, the sealing film 933 is pushed into the sealing groove 932 .

[0048] When the rear end of the drill pipe is pushed into the sealing groove 932, the liquid in the concave cavity 931 will be squeezed, and the hydraulic pressure will increase, so that it can tightly stick to both sides of the rear end of the drill pipe, thereby ensuring the sealing effect of the rotating rod abutment, preventing coolant or other liquids from flowing out from the gap between the drill pipe and the feed wheel body 935, and cannot be effectively delivered to the drill bit through the hollow structure in the center of the drill pipe.

[0049] This embodiment is a specific setting mode of the universal coupling 83. In one embodiment, the universal coupling 83 is a flexible shaft, and its two ends are respectively connected to the driving wheel 84 and the output shaft of the drilling power source 82. The flexible shaft is a shaft with very low rigidity and elasticity that can be freely bent and transmitted. It is used to connect two shafts with different axes and 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; Considering the limited ability of the flexible shaft to transmit torque, in another possible implementation, Figure 2-Figure 4The 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 connected by a cross hinge. The cross hinge includes a cross rod 8310 and an articulated frame 8312. The cross rod 8310 is divided into two groups. Both ends of one axis of each of the two groups of cross rods 8310 are rotatably connected to the articulated frame 8312. The two groups of cross rods 8310 are respectively located on both sides of the articulated frame 8312. Both ends of the other axis of each of the two groups of cross rods 8310 are rotatably connected to the power input shaft and the power output shaft.

[0050] In the above embodiment, at the cross hinge, the input rod 831 and the connecting rod 832, as well as the output rod 833 and the connecting rod 832, each have two directions of rotational freedom. Through the cross hinges at both ends of the connecting rod 832, the universal coupling 83 as a whole has a relatively rich degree of freedom, and the input rod 831 and the output rod 833 have a relatively flexible connection position and connection angle, which can adapt to the change of the axis of the driving wheel 84 caused by adjusting the pitch or rotation angle of the drilling substrate 81. In this way, the drilling angle can be adjusted without adjusting the drilling rig as a whole, which facilitates the construction process.

[0051] For this example, please refer to Figure 3 A plurality of parallel transmission wheel mounting grooves are provided on the drilling substrate 81, and the mounting grooves include a main groove 811 penetrating the drilling substrate 81 and auxiliary grooves 812 located on both sides of the main groove 811; The transmission wheel includes a rotating seat 851 and a rotating wheel body 852. The rotating wheel body 852 is rotatably installed on the rotating seat 851. The rotating seat 851 is provided with mounting holes around it. The mounting holes are aligned with the auxiliary grooves 812. The central area of ​​the rotating seat 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. When drilling, the rotating wheel body 852 drives the drill rod to rotate. A feed abutment mechanism is provided at the rear end of the drill rod to abut the rear end of the drill rod to form a feed force for drilling. The installation position of the transmission wheel can be adjusted along the installation groove.

[0052] In the above embodiment, the main improvement is that the installation position of each transmission wheel can be adjusted between each main groove 811 of the drilling base plate 81 and within the same main groove 811 as needed. The purpose is to adjust the mutual distance and arrangement relationship between each drill rod to cope with different blast hole group designs.

[0053] In this embodiment, the length of the connecting rod 832 can be adjusted. The connecting rod 832 is a telescopic cylinder, or the connecting rod 832 is formed by connecting two structural members, and the overall length of the connecting rod 832 is adjusted by adjusting the length of the matching area; Specifically, the connecting rod 832 includes a first rod and a second rod, and the first rod and the second rod have a matching area, a row of threaded holes 8321 are arranged along the axis of the first rod, and a locking groove 8326 is arranged along the axis of the second rod. After adjusting the matching area, the locking groove 8326 and the threaded hole 8321 are aligned, and the first rod and the second rod are connected and fixed by bolts. A sliding cavity 8322 for inserting the second rod is arranged at the center of the first rod. On the sliding cavity 8322, a threaded hole 8321 is arranged on one side, and a through groove 8323 penetrating the rod body of the first rod is arranged on the other side. 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 one side of the through groove 8323 of the first rod is a nut pressing surface, and a pressing body 8327 is between the pressing surface and the sliding cavity 8322. When the length needs to be adjusted, the bolt is taken out, the matching length between the first rod and the second rod is adjusted, and then the bolt is inserted to fasten the two into one. Compared with directly using the telescopic cylinder as the connecting rod 832, this method has greater strength and better torque transmission performance.

[0054] This embodiment is an embodiment of a method for drilling holes for blasting construction of a branch chute in a mine, using the above-mentioned drilling hole device for blasting construction of a branch chute in a mine, and includes the following steps: According to the design plan of the branch chute, a drilling device for blasting construction of the mine branch chute is set at the starting drilling section and the drilling base 80 of the drilling rig is preliminarily adjusted 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 the site survey results should be combined to ensure that the deviation is not too large and that the drill rod can be drilled out of the main chute, so as to observe the drill rod drilling point to provide a reference for the subsequent adjustment of the drill rod drilling angle and position; During initial drilling, only one drill rod is provided on the drilling base 80, preferably at the center of the drilling base 80, and a reference hole is drilled toward the main well along the design axis of the branch well. After the drill rod penetrates the main well, the drilling angle of the drill rod is adjusted according to the position of the drill rod in the main well and the drill is re-entered until the drill rod is aligned with the main well; After centering, the angle of the drilling base 80 is fixed, and multiple drill rods are arranged on the drilling base 80 according to the distribution of the blast hole group, and drilled in parallel to form a blast hole group. If the initial drill rod is located at the center of the drilling base 80, when the blast hole group is officially drilled, the remaining drill rods should be arranged in parallel with the initial drill rod as the center, so that when the blast hole group is drilled and blasted, the axis of the branch chute formed by blasting can be ensured to be accurate and can be aligned with the main chute.

[0055] In summary, the present invention effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0056] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may 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 a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A drilling device for blasting construction of a branch mine chute, characterized in that: It comprises a drilling base (80), 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 (80) to adjust the pitch angle of the drilling direction relative to the horizontal plane and the rotation angle around the vertical axis; The drilling transmission mechanism comprises a drilling base plate (81), a drilling power source (82) and a universal coupling (83); a plurality of transmission wheels are rotatably arranged on the drilling base plate (81); and a transmission structure is arranged on the outer periphery of the transmission wheel; The transmission wheel comprises at least one driving wheel (84) and a plurality of driven wheels (85), wherein the driving wheel (84) is fixed at a position on the drilling substrate (81), and the position of the driven wheel (85) on the drilling substrate (81) can be adjusted, and a through-going shaft hole is arranged at the center of the driven wheel (85), the shaft hole has a polygonal cross section, and the shaft hole is slidably matched with the drill rod and can drive the drill rod to rotate; The driving wheel (84) and the driven wheel (85) are synchronized by the transmission structure, and the driving wheel (84) and the drilling power source (82) are transmitted by the universal coupling (83); The drilling feeding mechanism is rotatably connected to the rear end of the drill rod and provides extrusion force to the rear end of the drill rod.

2. The drilling device for blasting construction of a branch mine chute according to claim 1, characterized in that: The drilling direction adjustment mechanism comprises a rotating disk (90) and a pitch and 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; a gear driven by a motor and meshing with the gear ring is provided on the drilling base (80), so as to adjust 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) via a pitch telescopic cylinder (91), and the pitch angle of the drilling direction relative to the horizontal plane is adjusted by the extension amount of the pitch telescopic cylinder (91).

3. The drilling device for blasting construction of a branch mine chute as claimed in claim 2, characterized in that: The drilling feed mechanism comprises a feed plate (92), the feed plate (92) having the same structure as the pitch plate and being arranged in parallel, and the feed plate (92) and the pitch plate are also connected via a telescopic cylinder; A feed abutment wheel (93) is provided on the feed plate (92), the feed abutment wheel (93) corresponds to the driven wheel (85) one by one, the feed abutment wheel (93) comprises a feed wheel seat (930) and a feed wheel body (935), the feed wheel seat (930) is fixedly connected to the feed plate (92), the feed wheel body (935) is rotatably matched with the feed wheel seat (930), and an inner concave cavity (931) is provided on the side of the feed wheel body (935) facing the drilling substrate (81), the cross section of the inner concave cavity (931) matches the drill rod, and the bottom surface of the inner concave cavity (931) abuts against the rear end of the drill rod.

4. The drilling device for blasting construction of a branch mine chute as claimed in claim 3, characterized in that: The bottom of the concave cavity (931) is penetrated on the feed abutment wheel (93), and the cross-section of the penetration area is smaller than the cross-section of the concave cavity (931). The end of the feed abutment wheel (93) is rotatably connected to a pipe connector (934), and the cross-section of the penetration area is located inside the pipe connector (934).

5. The drilling device for blasting construction of a branch mine chute as claimed in claim 4, characterized in that: The edge of the inner concave cavity (931) is provided with a sealing groove (932), the notch of the sealing groove (932) is provided with a sealing film (933), and liquid is encapsulated in the groove. When the inner concave cavity (931) abuts against the rear end of the drill rod, the sealing film (933) is pushed into the sealing groove (932).

6. The drilling device for blasting construction of a branch mine chute according to claim 1, characterized in that: The universal coupling (83) is a flexible shaft, and its two ends are respectively connected to the driving wheel (84) and the output shaft of the drilling power source (82); Alternatively, the universal coupling (83) comprises an input rod (831), an output rod (833) and a connecting rod (832), and the input rod (831) and the connecting rod (832), and the connecting rod (832) and the output rod (833) are both connected via a cross hinge; The cross hinge comprises a cross rod (8310) and an articulated frame (8312), wherein the cross rod (8310) is divided into two groups, and the two ends of one axis of each of the two groups of cross rods (8310) are rotatably connected to the articulated frame (8312), and the two groups of cross rods (8310) are respectively located on both sides of the articulated frame (8312), and the two ends of the other axis of each of the two groups of cross rods (8310) are rotatably connected to the power input shaft and the power output shaft.

7. The drilling device for blasting construction of a branch mine chute according to claim 1, characterized in that: The drilling base plate (81) is provided with a plurality of parallel transmission wheel installation grooves, the installation grooves comprising a main groove (811) penetrating the drilling base plate (81) and auxiliary grooves (812) located on both sides of the main groove (811); The transmission wheel comprises a rotating seat (851) and a rotating wheel body (852); the rotating wheel body (852) is rotatably mounted on the rotating seat (851); mounting holes are arranged around the rotating seat (851); the mounting holes are aligned with the auxiliary grooves (812); and the central area of ​​the rotating seat (851) is aligned with the main groove (811) of the drilling substrate (81); The installation position of the transmission wheel can be adjusted along the installation groove.

8. The drilling device for blasting construction of a branch mine chute according to claim 1, characterized in that: The length of the connecting rod (832) can be adjusted.

9. The drilling device for blasting construction of a branch mine chute as claimed in claim 8, characterized in that: The connecting rod (832) is a telescopic cylinder, or the connecting rod (832) is formed by connecting two structural parts, and the overall length of the connecting rod (832) is adjusted by adjusting the length of the matching area; The connecting rod (832) comprises a first rod and a second rod. In the matching area of ​​the first rod and the second rod, a row of threaded holes (8321) are arranged along the axis of the first rod, and a locking groove (8326) is arranged along the axis of the second rod. After adjusting the matching area, the locking groove (8326) and the threaded hole (8321) are aligned, and the first rod and the second rod are connected and fixed by bolts. A sliding cavity (8322) for inserting the second rod is arranged at the center of the first rod. The sliding cavity (8322) has a threaded hole (8321) on one side and a through groove (8323) penetrating the rod body of the first rod on the other side. 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 one side of the through groove (8323) of the first rod is a nut pressing surface, and a pressing body (8327) is between the pressing surface and the sliding cavity (8322). The transmission structure is a sprocket disposed on the circumference of the transmission wheel, and the transmission wheels are synchronized by chains.

10. A method for drilling holes for blasting construction of a branch chute of a mine, using the drilling hole device for blasting construction of a branch chute of a mine as claimed in claim 1, characterized in that: The following steps are involved: According to the design plan of the branch chute, the mine branch chute blasting construction drilling device is set at the drilling section and the drilling base (80) of the drilling machine is preliminarily adjusted to adjust the drilling angle; The drilling base (80) is provided with only one drill rod, and a reference hole is drilled toward the main chute along the design axis of the branch chute. After the drill rod penetrates the main chute, the drilling angle of the drill rod is adjusted according to the position of the drill rod in the main chute and the drill is re-entered until the drill rod is aligned with the main chute; After centering, the angle of the drilling base (80) is fixed, and according to the distribution of the blast hole group, a plurality of drill rods are arranged on the drilling base (80) to drill in parallel to form a blast hole group.

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