Mine branch draw shaft drilling transmission mechanism

Abstract

The utility model provides a mine branch draw shaft drilling transmission mechanism, belongs to the technical field of mine construction, and is used for drilling a plurality of parallel blast holes in the branch draw shaft construction process. The transmission mechanism comprises a drilling power source and a universal coupling, a plurality of transmission wheels are rotationally arranged on the drilling base plate, and transmission structures are arranged on the peripheries of the transmission wheels; the transmission wheels 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 on the drilling base plate can be adjusted, penetrating shaft holes are formed in the centers of the driven wheels, the sections of the shaft holes are polygonal, and the shaft holes are in sliding fit with the drilling rod. The driving wheel and the driven wheel synchronize power through a transmission structure, and power is transmitted between the driving wheel and the drilling power source through a universal coupling. The mechanism effectively solves the problem of drilling parallel blast holes in branch draw shaft construction, improves the construction efficiency and accuracy, has the advantages of simple structure, convenience in operation, high adaptability and the like, and remarkably improves the automation level of mining.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine construction, in particular to a mining branch chute drilling transmission mechanism. Background Art

[0002] Branch chutes are crucial structures in underground mining, connecting the main chute with various intermediate sections and used to transport ore or waste rock. As a key component of a mine's transportation system, the construction quality and efficiency of branch chutes directly impact a mine's production capacity and safety.

[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] Specifically, branch chutes are formed by drilling multiple sets of parallel blastholes and filling them with blasting cartridges. During construction, to ensure the quality of the branch chutes formed by blasting meets standards, the blastholes must be parallel to each other, but this is difficult to achieve with conventional drilling rigs. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a mining branch chute drilling transmission mechanism for solving the problem of how to drill parallel blastholes during the construction of the branch chute.

[0006] To achieve the above-mentioned and other related purposes, the present invention provides a mining branch chute drilling transmission mechanism, comprising a drilling base and a drilling substrate, wherein the drilling substrate has the freedom to pitch relative to the horizontal plane and to rotate about a vertical axis relative to the drilling base, and is characterized in that:

[0007] It also includes a drilling power source and a universal coupling;

[0008] A plurality of transmission wheels are rotatably provided on the drilling substrate, and a transmission structure is provided on the outer periphery of the transmission wheels;

[0009] 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 is adjustable. A through-hole is provided at the center of the driven wheel, and the axial hole has a polygonal cross section and is in sliding engagement with the drill rod.

[0010] 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.

[0011] Optionally, the universal coupling is a flexible shaft, with two ends respectively connected to the axle of the driving wheel and the output shaft of the drilling power source.

[0012] Optionally, the universal joint comprises 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 via a cross hinge;

[0013] The cross hinge includes a cross rod and an articulated frame. The cross rods are divided into two groups. The two ends of one 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. The two ends of the other 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, the length of the connecting rod is adjustable.

[0015] Optionally, the transmission structure is a sprocket arranged on the circumference of the transmission wheel, and the transmission wheels are synchronized by a chain.

[0016] Optionally, a plurality of parallel transmission wheel mounting grooves are provided on the drilling base plate, and the mounting grooves include a main groove running through the drilling base plate and auxiliary grooves located on both sides of the main groove;

[0017] The transmission wheel includes a rotating seat and a rotating wheel body, the rotating wheel body is rotatably mounted on the rotating seat, the rotating seat is provided with mounting holes around it, the mounting holes are aligned with the auxiliary grooves, and the center area of ​​the rotating seat is aligned with the main groove of the drilling substrate;

[0018] The installation position of the transmission wheel can be adjusted along the installation groove.

[0019] Optionally, the connecting rod is a telescopic cylinder;

[0020] Alternatively, 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 fitting area.

[0021] Optionally, the connecting rod includes a first rod and a second rod, and in the matching area of ​​the first rod and the second rod, a row of threaded holes is provided on the first rod along the axis, and a locking groove is provided 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.

[0022] Optionally, a sliding cavity for inserting the second rod is provided at the center of the first rod, and a threaded hole is provided on one side of the sliding cavity, and a through groove penetrating the rod body of the first rod is provided on the other side. The threaded hole and the through groove of the first rod are aligned with the locking groove of the second rod.

[0023] Optionally, the rod body on one side of the first rod passing through the slot is a nut pressing surface, and a pressing body is between the pressing surface and the sliding cavity.

[0024] As described above, the mining branch chute drilling transmission mechanism of the present invention has at least the following beneficial effects:

[0025] By designing a drilling baseplate with pitch and vertical rotational freedom, combined with a drilling power source and universal coupling, flexible operation of the mine branch chute drilling drive mechanism is achieved. In particular, the design of the drive wheel, including a fixed-position driving wheel and an adjustable driven wheel, as well as the sliding fit of the polygonal cross-section shaft hole and the drill rod, ensures stable power transmission and flexible positioning of the drill rod. This mechanism effectively solves the problem of drilling parallel blastholes in branch chute construction, improving construction efficiency and accuracy. It boasts simple structure, convenient operation, and strong adaptability, significantly enhancing the level of automation in mining operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is an overall schematic diagram of the utility model.

[0027] Figure 2 Shown is a schematic diagram of the main part of the utility model.

[0028] Figure 3 Shown is a schematic diagram of the present invention drilling into a substrate.

[0029] Figure 4 Shown is a partial cutaway schematic diagram of the universal coupling of the present invention.

[0030] Figure 5 Shown is a schematic diagram of the driven wheel of the utility model.

[0031] Figure 6 Shown is a schematic cross-sectional view of the universal coupling of the present invention.

[0032] Figure 7 Shown is a schematic diagram of the construction scene of the utility model.

[0033] Figure 8 Shown is a schematic diagram of a feeding mechanism that is compatible with the present utility model.

[0034] Among them: drilling base 80, drilling substrate 81, main groove 811, auxiliary groove 812, driving force 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. DETAILED DESCRIPTION

[0035] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0036] See also Figures 1 to 8 . 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 this utility model. Therefore, they have no substantive 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 this utility model without affecting the efficacy and purpose that can be achieved by this utility model. 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 this utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this utility model without substantially changing the technical content.

[0037] The following embodiments are for illustration only and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0038] For this example, please refer to Figure 1 The embodiment of the mining branch chute drilling transmission mechanism provided by the present invention includes a drilling base 80 and a drilling base plate 81. The drilling base 80 is equivalent to the frame of the drilling rig, and the drilling base plate 81 has the freedom of pitch relative to the horizontal plane and rotation around the vertical axis relative to the drilling base 80. The related operating mechanism and principle are not the improvement content of the present invention. The main improvements of the present invention are:

[0039] It also includes a drilling power source 82 and a universal coupling 83. The input and output ends of the universal coupling 83 are relatively flexible, and the coupling body can automatically adapt to the position and angle changes of the power input mechanism and the target drive mechanism shaft;

[0040] A plurality of transmission wheels are rotatably provided on the drilling substrate 81, and a transmission structure is provided on the periphery of the transmission wheel, which can be a sprocket, a pulley or the like, and the power synchronization between the transmission wheels is achieved through the transmission structure;

[0041] There are many types of transmission wheels, including at least one driving wheel 84 and multiple driven wheels 85. The driving wheel 84 is fixed at the position of the drilling base plate 81, and the position of the driven wheel 85 is adjustable. The center of the driven wheel 85 is provided with a through-hole, the axial hole has a polygonal cross-section, and the axial hole is slidably engaged with the drill rod.

[0042] 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 via a universal coupling 83. The universal coupling 83 is used because the output shaft of the drilling power source 82 is fixed, while the driving wheel 84 needs to adjust the pitch angle and other parameters according to the drilling base 81, so the axis of the driving wheel 84 will be variable.

[0043] Combine Figure 7 In the process of underground mining, in order to improve the efficiency of ore transportation, a middle section 21 usually realizes the lowering and transportation of ore through the main chute 20. The main chute 20 serves as 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 limitations, it is impossible to directly use the main chute 20 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 24 must be designed and constructed based on 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 drilling and blasting construction method, which simply 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 design 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.

[0044] 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. When drilling the blast hole group, it is also necessary to ensure that the individual blast holes in the blast hole group are parallel, so that the designed cross section and path of the branch chute can be accurately blasted out during blasting. In the prior art, when encountering such a scenario, each blast hole is drilled independently, which not only has low drilling efficiency, but also makes it difficult to ensure the parallelism index between the holes.

[0045] However, when using the method of this embodiment, each drill rod can be matched with a driven wheel 85, which drives the drill rod in rotation. The power of each driven wheel is synchronously input by the driving wheel 84, allowing each drill rod to drill synchronously, thereby improving efficiency. Furthermore, each driven wheel 85 is mounted on the drilling base 81. By adjusting the spacing and position of each driven wheel 85, the position of each drill hole can be adjusted, improving construction flexibility. Moreover, due to the restraining effect of the driven wheels 85 on the drill rods, the technical solution of this embodiment can also ensure that each drill rod drills in parallel, thereby ensuring that the blastholes in the blasthole group are parallel to each other, and thus ensuring that the construction quality of the branch chute meets the design requirements.

[0046] In this embodiment, the universal joint 83 is a flexible shaft, with its ends connected to the axle of the driving wheel 84 and the output shaft of the drilling power source 82, respectively. A flexible shaft is a very low-rigid, elastic shaft that allows for free bending and transmission. It is used to connect two shafts with different axes, or two shafts that are not aligned in the same direction or have relative motion, to transmit rotational motion and torque. It can flexibly transmit rotational motion and torque to any location.

[0047] Considering the limited ability of the flexible shaft to transmit torque, in another possible embodiment, see Figure 1 、 Figure 2 and Figure 4 The universal joint 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.

[0048] The cross hinge includes a cross rod 8310 and an articulated frame 8312. The cross rod 8310 is divided into two groups. The two ends of one axis of each group 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. The two ends of the other axis of each group of cross rods 8310 are rotatably connected to the power input shaft and the power output shaft.

[0049] 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 degrees 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. The input rod 831 and the output rod 833 have a relatively flexible connection position and angle, which can adapt to the changes in the axis of the driving wheel 84 caused by adjusting the pitch or rotation angle of the drilling base 81. In this way, the drilling angle can be adjusted without adjusting the entire drilling rig, facilitating the construction process.

[0050] This embodiment Figure 4 As shown, the length of the connecting rod 832 can be adjusted, further increasing the flexibility of the universal joint 83.

[0051] This embodiment Figure 2 As shown, the transmission structure is a sprocket arranged on the circumference of the transmission wheel. The power between each transmission wheel is synchronized through the chain. In order to increase the stability and reliability of power transmission, a multi-layer sprocket structure can be set to connect multiple chains.

[0052] This embodiment can be found in Figure 3 , a plurality of parallel transmission wheel mounting grooves are provided on the drilling base plate 81, and the mounting grooves include a main groove 811 penetrating the drilling base plate 81 and auxiliary grooves 812 located on both sides of the main groove 811;

[0053] The transmission wheel includes a rotating seat 851 and a rotating wheel body 852. The rotating wheel body 852 is rotatably mounted 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 and can be fixedly connected by bolts. The center 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. Figure 8 As shown, the tail end of the drill rod is also provided with a feed abutment mechanism 93, which abuts the tail end of the drill rod to form a feed force for drilling. In simple terms, the tail end of the drill rod is rotatably connected to a plate, and pressure is provided to the plate to provide a ready-made abutment force. Considering that the abutment mechanism 93 is not an improvement point of the present invention, it will not be described in detail here;

[0054] The installation position of the transmission wheel can be adjusted along the installation groove.

[0055] 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.

[0056] In this embodiment, the connecting rod 832 is a telescopic cylinder, such as an electric cylinder or a pneumatic cylinder;

[0057] Alternatively, the connecting rod 832 is formed by connecting two structural members, such as Figure 4 and Figure 6 As shown, the overall length of the connecting rod 832 is adjusted by adjusting the length of the fitting area.

[0058] Specifically, the connecting rod 832 includes a first rod and a second rod, a matching area of ​​the first rod and the second rod, a row of threaded holes 8321 are provided along the axis of the first rod, and a locking groove 8326 is provided 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.

[0059] A sliding cavity 8322 for inserting the second rod is provided at the center of the first rod. A threaded hole 8321 is provided on one side of the sliding cavity 8322, and a through groove 8323 that passes through the rod body of the first rod is provided 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.

[0060] The rod body on one side of the first rod passing through the slot 8323 is the nut pressing surface, and the pressing body 8327 is between the pressing surface and the sliding cavity 8322.

[0061] When the length needs to be adjusted, the bolts are removed, the length of the first and second rods is adjusted, and then the bolts are inserted to tighten the two rods together. Compared with directly using a telescopic cylinder as the connecting rod 832, this method has greater strength and better torque transmission performance.

[0062] In summary, the present invention effectively overcomes various shortcomings in the prior art, can produce beneficial technical effects, and has significant progress.

[0063] 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 skilled in 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 one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A mining branch chute drilling transmission mechanism, comprising a drilling base (80) and a drilling substrate (81), wherein the drilling substrate (81) has the freedom of pitching relative to a horizontal plane and rotating about a vertical axis relative to the drilling base (80), and is characterized in that: Also included is a drilling power source (82) and a universal coupling (83); A plurality of transmission wheels are rotatably provided on the drilling base plate (81), and a transmission structure is provided on the outer periphery of the transmission wheel; The transmission wheel includes 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 base plate (81), and the position of the driven wheel (85) on the drilling base plate (81) is adjustable, and a through-hole is provided at the center of the driven wheel (85), the hole having a polygonal cross section, and the hole is in sliding engagement with the drill rod; 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).

2. The mine branch chute drilling transmission mechanism according to claim 1, characterized in that: The universal coupling (83) is a flexible shaft, with two ends respectively connected to the wheel axle of the driving wheel (84) and the output shaft of the drilling power source (82).

3. The mine branch chute drilling transmission mechanism according to claim 1, characterized in that: The universal coupling (83) includes an input rod (831), an output rod (833), and a connecting rod (832), wherein the input rod (831) and the connecting rod (832), and the connecting rod (832) and the output rod (833) are connected via a cross hinge; The cross hinge includes 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.

4. The mine branch chute drilling transmission mechanism according to claim 3, characterized in that: The length of the connecting rod (832) can be adjusted.

5. The mine branch chute drilling transmission mechanism according to claim 1, characterized in that: The transmission structure is a sprocket arranged on the circumference of the transmission wheel, and the transmission wheels are synchronized by a chain.

6. The mine branch chute drilling transmission mechanism according to claim 1, characterized in that: The drilling base plate (81) is provided with a plurality of parallel transmission wheel mounting grooves, wherein the mounting grooves include 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), wherein the rotating wheel body (852) is rotatably mounted on the rotating seat (851), and mounting holes are provided around the rotating seat (851), wherein 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.

7. The mine branch chute drilling transmission mechanism according to claim 4, characterized in that: The connecting rod (832) is a telescopic cylinder; Alternatively, 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 fitting area.

8. The mine branch chute drilling transmission mechanism according to claim 7, characterized in that: The connecting rod (832) includes 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 provided on the first rod along the axis, and a locking groove (8326) is provided on the second rod along the axis. 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.

9. The mine branch chute drilling transmission mechanism according to claim 8, characterized in that: A sliding cavity (8322) is provided at the center of the first rod for inserting the second rod. A threaded hole (8321) is provided on one side of the sliding cavity (8322), and a through groove (8323) that passes through the rod body of the first rod is provided 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.

10. The mine branch chute drilling transmission mechanism according to claim 9, characterized in that: The rod body on one side of the first rod passing through the slot (8323) is a nut pressing surface, and a pressing body (8327) is located between the pressing surface and the sliding cavity (8322).

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