Energy-saving coal mine directional reaming drilling device

Abstract

The invention discloses an energy-saving coal mine directional chambering drilling device, and particularly relates to the technical field of mining industry, the energy-saving coal mine directional chambering drilling device comprises a connecting column, the outer circle wall surface of the connecting column is fixedly sleeved with a mounting disc, and a plurality of roller bits are arranged on the top surface of the mounting disc. Then, due to the fact that the bearing block and the sliding frame can slide, an inclined groove in the surface of the sliding frame can convert the downward movement force of the bearing block into the transverse movement force of the mounting blocks in the sliding process, then the multiple mounting blocks can drive the multiple roller bits to rotate at the same time, and therefore the use distance of the multiple roller bits can be adjusted; and the reaming device is suitable for different coal mine holes, so that the using diameter of the reaming device is adjusted, and workers are prevented from frequently replacing the reaming device.

Description

Technical Field

[0001] This invention relates to the field of mining technology, specifically to an energy-saving directional reaming drilling device for coal mines. Background Technology

[0002] Mining refers to the extraction of naturally occurring minerals, such as solids, liquids, or gases, including underground or above-ground extraction, mine operation, and all auxiliary work generally carried out at or near a mine site aimed at processing raw materials, such as crushing, beneficiation, and treatment. It also includes preparatory work necessary to enable the sale of raw materials, but excludes the collection, purification, and distribution of water, as well as geological exploration and construction activities.

[0003] In existing technologies, coal mines often need to enlarge pre-drilled holes during mining operations. This process typically requires the use of rock reamers. Existing rock reamers generally achieve hole enlargement through rotary cutting or differential pressure expansion. However, different models of reamers need to be selected based on the diameter of the hole to be enlarged. Consequently, during hole enlargement in coal mines, workers need to change different models of reamers at different locations. Because the rock reamers used in mining are relatively large, frequent changes require a significant amount of time, which in turn affects their effectiveness. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an energy-saving directional reaming drilling device for coal mines, thereby solving the problems mentioned in the background section.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] An energy-saving directional drilling device for coal mines includes a connecting column. A mounting plate is fixedly sleeved on the outer circular wall of the connecting column. A plurality of roller cone drill bits are arranged on the top surface of the mounting plate, along with a plurality of second secondary cutting edges. A plurality of first secondary cutting edges are arranged on the bottom surface of the mounting plate. A plurality of first positioning frames are fixedly installed on the top surface of the mounting plate, with each pair of first positioning frames forming a group. A mounting block is rotatably connected between two pairs of first positioning frames. The outer circular wall of the mounting block is rotatably connected to the roller cone drill bits. Two slides are fixedly installed on one side of the mounting block, and a receiving block is slidably connected between the two slides; an adjusting cover is threadedly connected to the top surface of the mounting plate, and a connecting frame is rotatably connected to the top surface of the adjusting cover, with the outer circular wall of the connecting frame fixedly installed with the receiving block; a first linkage component is provided on the top surface of the mounting plate to facilitate angle adjustment of multiple second auxiliary blades when the adjusting cover rotates; a second linkage component is provided on the bottom surface of the mounting plate to facilitate angle adjustment of multiple first auxiliary blades when the adjusting cover rotates.

[0007] By adopting the above technical solution, the adjusting cover is rotated, causing it to move up and down along the surface of the mounting disc thread. This causes the connecting frame to move up and down accordingly. Since the connecting frame and the adjusting cover can rotate relative to each other, the connecting frame will not rotate due to the rotation of the adjusting cover. This will cause multiple receiving blocks to move downwards. Then, since the receiving blocks and the slide can slide, the inclined groove on the surface of the slide will convert the downward force of the receiving blocks into the lateral force of the mounting blocks during the sliding process. As a result, multiple mounting blocks will simultaneously drive multiple roller cone drill bits to rotate, thereby adjusting the spacing between the multiple roller cone drill bits to meet different usage requirements. During this process, multiple second auxiliary cutting edges and multiple first auxiliary cutting edges will also adjust their angles together. Then, when the adjusting cover rotates, the angles of multiple roller cone drill bits, multiple second auxiliary cutting edges, and multiple first auxiliary cutting edges can be adjusted simultaneously to adapt to different coal mine holes. This achieves the effect of adjusting the working diameter of the hole enlarging device and avoiding frequent replacements by the workers.

[0008] Preferably, the first linkage component includes: a plurality of second positioning frames, each of which is fixedly installed on the top surface of the connecting frame, with every two second positioning frames forming a group, and a second mounting sleeve rotatably and slidably connected between the two second positioning frames, with second sliding grooves respectively opened on both sides of the inner side of the second mounting sleeve, and a plurality of positioning posts fixedly installed on the outer circular wall of the connecting post, the positions of the positioning posts being opposite to the positions of the second mounting sleeves, the positioning posts being slidably connected to the inner wall of the second sliding grooves, and one side of the second mounting sleeve being fixedly installed with the second secondary blade.

[0009] By adopting the above technical solution, when the adjusting cover rotates downward and opens the multiple roller cone drill bits in a facing principle, the connecting frame will drive the multiple second positioning frames to move downward simultaneously. Then, since the positions of the multiple positioning pins are fixed, the positioning pins will slide along the inner wall of the second slide groove. At this time, the second slide groove will convert the downward force of the connecting frame into a thrust, thereby causing the multiple second mounting sleeves to drive the multiple second auxiliary cutting edges to rotate simultaneously and move away from each other. This achieves the goal of facilitating the simultaneous adjustment and use of multiple second auxiliary cutting edges when the adjusting cover rotates to adjust the multiple roller cone drill bits.

[0010] Preferably, the second linkage component includes: a plurality of first mounting sleeves, all of which are disposed on the bottom surface of the mounting plate; the outer circular wall of the connecting column is rotatably connected to the plurality of first mounting sleeves; one side of the first mounting sleeve is fixedly installed to the first secondary blade; a plurality of limiting holes are opened on the top surface of the mounting plate; a receiving rod is slidably connected inside the limiting holes; a connecting ring is fixedly installed on the inner top surface of the adjusting cover; the connecting ring is rotatably connected to the receiving rod; rollers are rotatably connected to both sides of the receiving rod; and first sliding grooves are opened on both sides of the inner surface of the first mounting sleeves; the inner wall of the first sliding groove is slidably connected to the roller.

[0011] By adopting the above technical solution, when the adjusting cover rotates downward, it drives multiple receiving rods to move downward simultaneously. At this time, since multiple receiving rods can rotate with the connecting ring, the multiple receiving rods will not cause motion interference due to the rotation of the adjusting cover. Then, the multiple downward-moving receiving rods will drive multiple rollers to slide inside the first slide groove. At this time, the inclined surface of the inner wall of the first slide groove will convert the downward moving force of the receiving rods into a thrust, and drive multiple first mounting sleeves and first secondary cutting edges to rotate away from each other simultaneously. This achieves the goal of facilitating the simultaneous adjustment and use of multiple first secondary cutting edges when adjusting the roller cone drill bit by rotating the adjusting cover.

[0012] Preferably, a plurality of threaded posts are fixedly installed on the top surface of the mounting plate, and threaded caps are threadedly connected to the outer circular wall of the threaded posts. A support plug is rotatably connected to the top surface of the threaded caps. A positioning hole is opened on the bottom surface of the mounting block, and the inner circular wall of the positioning hole is movably sleeved with the support plug.

[0013] By adopting the above technical solution, the threaded transmission between the threaded cap and the threaded post can cause the threaded cap to move the support plug upward or downward. Then, after multiple mounting blocks are rotated and used, the support plug can extend into the positioning hole and lock the mounting block to limit and fix its adjustment angle.

[0014] Preferably, a first protective cover is detachably installed on the top of the mounting plate, the inner wall surface of the first protective cover being movably connected to the mounting block and the second mounting sleeve respectively, and a second protective cover is detachably installed on the bottom surface of the mounting plate, the inner wall surface of the second protective cover being movably connected to the first mounting sleeve.

[0015] By adopting the above technical solution, the first and second protective covers can protect the connecting parts of the first and second auxiliary cutting edges and the roller cone drill bit during use, preventing soil or dust from entering the borehole and causing jamming that would affect its use.

[0016] Preferably, a plurality of first protective sleeves are fixedly installed on the outer circular wall of the second protective cover, the first protective sleeves are elastically connected to the second protective cover, and the positions of the first protective sleeves correspond to the positions of the first secondary cutting edge. A plurality of second protective sleeves are fixedly installed on the outer circular wall of the first protective cover, the roller cone drill bit is elastically connected to the first protective cover, the positions of the second protective sleeves correspond to the positions of the second secondary cutting edge, a plurality of first limiting covers are fixedly installed on the outer circular wall of the first protective cover, a first winding stop is fixedly installed on one side of the mounting block, the first winding stop is slidably connected to the first limiting cover, a plurality of second limiting covers are fixedly installed on the top surface of the mounting plate, and a second winding stop is fixedly installed on the other side of the mounting block, the second winding stop is slidably connected to the second limiting cover.

[0017] By adopting the above technical solution, the first protective sleeve, the second protective sleeve, the first winding baffle, and the second winding baffle facilitate further shielding and sealing of the gaps between the first and second protective sleeves and multiple second auxiliary blades, multiple first auxiliary blades, and multiple mounting blocks when they are in use, preventing soil or dust inside the mine hole from entering the interior of the first and second protective sleeves and affecting their use.

[0018] Preferably, the surfaces of the connecting column, the mounting plate, the first protective cover, and the second protective cover are all electroplated with a corrosion-resistant coating.

[0019] By adopting the above technical solution, it is convenient to provide rust and corrosion protection for the device when it is not applicable.

[0020] In summary, the present invention has the following main beneficial effects:

[0021] 1. This invention allows the connecting frame to move up and down by rotating the adjusting cover. Since the receiving block and the slide can slide together, the inclined groove on the surface of the slide will convert the downward force of the receiving block into the lateral force of the mounting block during the sliding process. As a result, multiple mounting blocks will simultaneously drive multiple roller cone drill bits to rotate, thereby adjusting the spacing between the multiple roller cone drill bits to adapt to different coal mine holes. This achieves the effect of adjusting the diameter of the hole enlarging device and avoiding frequent replacement by the workers.

[0022] 2. In this invention, when the adjusting cover rotates downward to open multiple roller cone drill bits facing each other, the connecting frame will drive multiple second positioning frames to move downward simultaneously. Since the positions of multiple positioning pins are fixed, the positioning pins will slide along the inner wall of the second slide groove. At this time, the second slide groove will convert the downward force of the connecting frame into a thrust, thereby causing multiple second mounting sleeves to drive multiple second auxiliary cutting edges to rotate simultaneously and move away from each other. This achieves the effect of facilitating the simultaneous adjustment and use of multiple second auxiliary cutting edges when adjusting multiple roller cone drill bits by rotating the adjusting cover.

[0023] 3. When the adjusting cover rotates downwards, the present invention drives multiple receiving rods to move downwards simultaneously. Since the multiple receiving rods and the connecting ring can rotate, the multiple receiving rods will not cause motion interference due to the rotation of the adjusting cover. Then, the multiple downward-moving receiving rods will drive multiple rollers to slide inside the first slide groove. At this time, the inclined surface of the inner wall of the first slide groove will convert the downward moving force of the receiving rods into a thrust, and drive multiple first mounting sleeves and first secondary cutting edges to rotate away from each other simultaneously. This achieves the effect of facilitating the adjustment of the roller cone drill bit by rotating the adjusting cover, and driving multiple first secondary cutting edges to be adjusted and used simultaneously.

[0024] 4. The present invention enables the threaded transmission between the threaded cap and the threaded post to move the support plug upward or downward through the threaded cap. Thus, the support plug can extend into the positioning hole after multiple mounting blocks are rotated and used, and lock the mounting block to limit and fix its adjustment angle.

[0025] 5. The present invention, through the first protective cover and the second protective cover, can protect the connecting parts of the first secondary cutting edge, the second secondary cutting edge and the roller cone drill bit when they are in use, and prevent soil or dust inside the mine hole from entering and causing jamming, which would affect the performance of the drill bit.

[0026] 6. The present invention, through the first protective sleeve, the second protective sleeve, the first winding baffle and the second winding baffle, facilitates the further shielding and sealing of the gaps between the multiple second auxiliary blades, multiple first auxiliary blades and multiple mounting blocks and the first and second protective sleeves when they are used, so as to prevent soil or dust inside the mine hole from entering the interior of the first and second protective sleeves and affecting the effect of use. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the first protective cover structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the mounting disk structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the receiving rod structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the roller cone drill bit structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the mounting block structure of the present invention;

[0033] Figure 7 This is a schematic diagram of the connecting frame structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the second mounting sleeve structure of the present invention.

[0035] Reference numerals: 1. Connecting post; 2. Mounting disc; 3. Rotary cone drill bit; 4. First protective cover; 5. First secondary cutting edge; 6. Second secondary cutting edge; 7. First feed cutter; 8. Second feed cutter; 9. Second protective cover; 10. First protective sleeve; 11. Adjusting cover; 12. Connecting frame; 13. First mounting sleeve; 14. First slide groove; 15. First positioning frame; 16. First limit cover; 17. Receiving rod; 18. Roller; 19. Threaded cap; 20. Mounting block; 21. First take-up stop; 22. Threaded post; 23. Second take-up stop; 24. Second limit cover; 25. Receiving block; 26. Positioning hole; 27. Support plug; 28. Slide; 29. ​​Limiting hole; 30. Connecting ring; 31. Second protective sleeve; 32. Second mounting sleeve; 33. Second slide groove; 34. Positioning post; 35. Second positioning frame. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8An energy-saving directional drilling device for coal mines includes: a connecting column 1, a mounting plate 2 fixedly sleeved on the outer circular wall of the connecting column 1, a plurality of roller cone drill bits 3 arranged on the top surface of the mounting plate 2, a plurality of second auxiliary cutting edges 6 arranged on the top surface of the mounting plate 2, and a plurality of first auxiliary cutting edges 5 arranged on the bottom surface of the mounting plate 2; a plurality of first positioning frames 15 fixedly installed on the top surface of the mounting plate 2, each pair of first positioning frames 15 forming a group, and a mounting block 20 rotatably connected between two first positioning frames 15, the outer circular wall of the mounting block 20 being rotatably connected to the roller cone drill bits 3, two slides 28 fixedly installed on one side of the mounting block 20, and a receiving block 25 slidably connected between the two slides 28; an adjusting cover 11 threadedly connected to the top surface of the mounting plate 2, the top surface of the adjusting cover 11... A connecting frame 12 is rotatably connected, and the outer circular wall of the connecting frame 12 is fixedly installed with the receiving block 25. A first linkage component is provided on the top surface of the mounting plate 2, facilitating angle adjustment of multiple second auxiliary blades 6 when the adjusting cover 11 rotates. A second linkage component is provided on the bottom surface of the mounting plate 2, facilitating angle adjustment of multiple first auxiliary blades 5 when the adjusting cover 11 rotates. By rotating the adjusting cover 11, the adjusting cover 11 moves up and down along the threaded surface of the mounting plate 2, thereby causing the connecting frame 12 to move up and down accordingly. Since the connecting frame 12 and the adjusting cover 11 can rotate relative to each other, the connecting frame 12 will not rotate due to the rotation of the adjusting cover 11, and will cause multiple receiving blocks 25 to move downwards. Then, due to the rotation of the receiving blocks 25 and... The slides 28 can slide between each other. During this sliding process, the inclined grooves on the surface of the slides 28 will convert the downward force of the receiving block 25 into the lateral force of the mounting block 20. This causes multiple mounting blocks 20 to simultaneously drive multiple roller cone drill bits 3 to rotate, thus adjusting the spacing between the drill bits 3 to meet different usage requirements. During this process, multiple second auxiliary cutting edges 6 and multiple first auxiliary cutting edges 5 will adjust their angles simultaneously. Then, when the adjusting cover 11 rotates, the angles of the drill bits 3, multiple second auxiliary cutting edges 6, and multiple first auxiliary cutting edges 5 can be adjusted simultaneously to adapt to different coal mine boreholes. This achieves the effect of adjusting the working diameter of the hole-reaming device, avoiding frequent replacements by workers. (First linkage) The component includes: several second positioning frames 35, all of which are fixedly installed on the top surface of the connecting frame 12. Each pair of second positioning frames 35 forms a group, and a second mounting sleeve 32 is rotatably and slidably connected between the two second positioning frames 35. Second sliding grooves 33 are respectively opened on both sides of the inner surface of the second mounting sleeve 32. Several positioning posts 34 are fixedly installed on the outer circular wall of the connecting post 1, with the positions of the positioning posts 34 opposite to the positions of the second mounting sleeves 32. The positioning posts 34 are slidably connected to the inner wall of the second sliding grooves 33. One side of the second mounting sleeve 32 is fixedly installed to the second auxiliary cutting edge 6. When the adjusting cover 11 rotates and moves downwards, causing the multiple roller cone drill bits 3 to open in a facing direction, the connecting frame 12 will drive the multiple second positioning frames 35 to move downwards simultaneously.Since the positions of multiple positioning pins 34 are fixed, the positioning pins 34 will slide along the inner wall of the second slide groove 33. At this time, the second slide groove 33 will convert the downward force of the connecting frame 12 into a thrust, thereby causing multiple second mounting sleeves 32 to drive multiple second auxiliary cutting edges 6 to rotate simultaneously and move away from each other. This facilitates the simultaneous adjustment of multiple second auxiliary cutting edges 6 when the adjusting cover 11 rotates to adjust multiple roller cone drill bits 3. The second linkage component includes: several first mounting sleeves 13, which are all set on the bottom surface of the mounting plate 2. The outer circular wall of the connecting pin 1 is rotatably connected to several first mounting sleeves 13. One side of the first mounting sleeve 13 is fixedly installed with the first auxiliary cutting edge 5. Several limiting holes 29 are opened on the top surface of the mounting plate 2. The receiving rod 17 is slidably connected inside the limiting hole 29. A connecting ring 30 is fixedly installed on the inner top surface of the adjusting cover 11. The connecting ring 30 and the receiving rod 17 are connected to the receiving rod 17. The connecting rod 17 is rotatably connected, and rollers 18 are rotatably connected to both sides of the connecting rod 17. First sliding grooves 14 are respectively opened on both sides of the interior of the first mounting sleeve 13. The inner wall of the first sliding groove 14 is slidably connected to the rollers 18. When the adjusting cover 11 rotates downwards, it drives multiple connecting rods 17 to move downwards simultaneously. At this time, since multiple connecting rods 17 can rotate with the connecting ring 30, the multiple connecting rods 17 will not cause movement interference due to the rotation of the adjusting cover 11. Then, the multiple downward-moving connecting rods 17 will drive multiple rollers 18 to slide inside the first sliding grooves 14. At this time, the inclined surface of the inner wall of the first sliding groove 14 will convert the downward moving force of the connecting rods 17 into a thrust, and drive multiple first mounting sleeves 13 and first secondary cutting edges 5 to rotate simultaneously away from each other. This achieves the goal of facilitating the simultaneous adjustment of multiple first secondary cutting edges 5 when the adjusting cover 11 rotates to adjust the roller cone drill bit 3.

[0038] Based on the above embodiments, refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 8Several threaded posts 22 are fixedly installed on the top surface of the mounting plate 2. Threaded caps 19 are threadedly connected to the outer circular wall of each threaded post 22. A support plug 27 is rotatably connected to the top surface of each threaded cap 19. A positioning hole 26 is provided on the bottom surface of the mounting block 20. The inner circular wall of the positioning hole 26 is movably fitted with the support plug 27. Through the threaded transmission between the threaded cap 19 and the threaded post 22, the threaded cap 19 can drive the support plug 27 to move upwards or downwards. Furthermore, after multiple mounting blocks 20 have been rotated and used, the support plug 27 can extend into the positioning hole 26 and lock the mounting block 20, limiting and fixing its adjustment angle. The top of the mounting plate 2 is detachable. A first protective cover 4 is detachably installed, and its inner wall is movably connected to the mounting block 20 and the second mounting sleeve 32. A second protective cover 9 is detachably installed on the bottom surface of the mounting plate 2, and its inner wall is movably connected to the first mounting sleeve 13. The first and second protective covers 4 and 9 protect the connecting parts of the first secondary cutting edge 5, the second secondary cutting edge 6, and the roller cone drill bit 3 during use, preventing soil or dust from entering the borehole and causing jamming, thus affecting operation. Several first protective sleeves 10 are fixedly installed on the outer circular wall of the second protective cover 9, and the first protective sleeves 10 are elastically connected to the second protective cover 9. A protective sleeve 10 corresponds to the position of the first secondary cutting edge 5. Several second protective sleeves 31 are fixedly installed on the outer circular wall of the first protective cover 4. The roller cone drill bit 3 is elastically connected to the first protective cover 4. The position of the second protective sleeve 31 corresponds to the position of the second secondary cutting edge 6. Several first limiting covers 16 are fixedly installed on the outer circular wall of the first protective cover 4. A first winding stop cover 21 is fixedly installed on one side of the mounting block 20. The first winding stop cover 21 is slidably connected to the first limiting cover 16. Several second limiting covers 24 are fixedly installed on the top surface of the mounting disc 2. A second winding stop cover 23 is fixedly installed on the other side of the mounting block 20. The second winding... The baffle 23 is slidably connected to the second limiting cover 24. Through the first protective sleeve 10, the second protective sleeve 31, the first winding baffle 21, and the second winding baffle 23, it is convenient to further shield and seal the gap between the multiple second secondary blades 6, multiple first secondary blades 5, and multiple mounting blocks 20 and the first protective cover 4 and the second protective cover 9 when they are in use, so as to prevent soil or dust inside the mine hole from entering the interior of the first protective cover 4 and the second protective cover 9 and affecting their use. The surfaces of the connecting column 1, the mounting plate 2, the first protective cover 4, and the second protective cover 9 are all electroplated with a corrosion-resistant coating, which is convenient for rust and corrosion protection when the device is not in use.

[0039] Working principle: Please refer to Figures 1-8As shown, by rotating the adjusting cover 11, the adjusting cover 11 moves up and down along the threaded surface of the mounting plate 2, thereby causing the connecting frame 12 to move up and down accordingly. At this time, since the connecting frame 12 and the adjusting cover 11 can rotate relative to each other, the connecting frame 12 will not rotate due to the rotation of the adjusting cover 11, and will drive multiple receiving blocks 25 to move downward. Then, since the receiving blocks 25 and the slide 28 can slide, the inclined groove on the surface of the slide 28 will convert the downward force of the receiving blocks 25 into the lateral movement of the mounting block 20 during the sliding process. The force of the multiple mounting blocks 20 will simultaneously drive the multiple roller cone drill bits 3 to rotate, thereby adjusting the spacing between the multiple roller cone drill bits 3 to meet different usage requirements. During this process, the multiple second auxiliary cutting edges 6 and the multiple first auxiliary cutting edges 5 will adjust their angles together. Then, when the adjusting cover 11 rotates, the angles of the multiple roller cone drill bits 3, the multiple second auxiliary cutting edges 6, and the multiple first auxiliary cutting edges 5 can be adjusted simultaneously to adapt to different coal mine holes, thereby achieving the effect of adjusting the diameter of the hole enlarging device and avoiding frequent replacement by the workers.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving directional reaming drilling device for coal mines, characterized in that, include: A connecting column is provided with a mounting plate fixedly sleeved on its outer circular wall surface. The top surface of the mounting plate is provided with a number of roller cone drill bits, the top surface of the mounting plate is provided with a number of second auxiliary cutting edges, and the bottom surface of the mounting plate is provided with a number of first auxiliary cutting edges. Several first positioning frames are fixedly installed on the top surface of the mounting plate. Every two first positioning frames form a group. A mounting block is rotatably connected between the two first positioning frames. The outer circular wall of the mounting block is rotatably connected to the roller cone drill bit. Two slides are fixedly installed on one side of the mounting block. A receiving block is slidably connected between the two slides. The top surface of the mounting plate is threaded with an adjustment cover, and the top surface of the adjustment cover is rotatably connected with a connecting frame. The outer circular wall of the connecting frame is fixedly installed with the receiving block. The top surface of the mounting plate is equipped with a first linkage component, which facilitates the angle adjustment of multiple second auxiliary blades when the adjustment cover rotates; The bottom surface of the mounting plate is equipped with a second linkage component, which facilitates the angle adjustment of multiple first secondary blades when the adjustment cover rotates.

2. The energy-saving directional reaming drilling device for coal mines according to claim 1, characterized in that, The first linkage component includes: several second positioning frames, each fixedly mounted on the top surface of the connecting frame, with two second positioning frames forming a group. A second mounting sleeve is rotatably and slidably connected between the two second positioning frames. A second sliding groove is provided on both sides of the inner side of the second mounting sleeve. Several positioning pins are fixedly mounted on the outer circular wall of the connecting column. The position of the positioning pins is opposite to the position of the second mounting sleeve. The positioning pins are slidably connected to the inner wall of the second sliding groove. One side of the second mounting sleeve is fixedly mounted to the second auxiliary cutting edge. When the adjusting cover rotates and moves downward, causing multiple roller cone drill bits to open in a facing direction, the connecting frame will drive multiple second positioning frames to move downward simultaneously. Since the positions of the multiple positioning pins are fixed, the positioning pins will slide along the inner wall of the second sliding groove. At this time, the second sliding groove will convert the downward force of the connecting frame into a thrust, thereby causing multiple second mounting sleeves to drive multiple second auxiliary cutting edges to rotate simultaneously and move away from each other. This facilitates the simultaneous adjustment and use of multiple second auxiliary cutting edges when the adjusting cover rotates to adjust multiple roller cone drill bits.

3. The energy-saving directional reaming drilling device for coal mines according to claim 2, characterized in that, The second linkage component includes: several first mounting sleeves, all of which are disposed on the bottom surface of the mounting plate; the outer circular wall of the connecting column is rotatably connected to the several first mounting sleeves; one side of each first mounting sleeve is fixedly installed to a first secondary blade; several limiting holes are provided on the top surface of the mounting plate; a receiving rod is slidably connected inside each limiting hole; a connecting ring is fixedly installed on the inner top surface of the adjusting cover; the connecting ring is rotatably connected to the receiving rod; rollers are rotatably connected to both sides of the receiving rod; first sliding grooves are provided on both sides of the inner surface of each first mounting sleeve; the inner wall of each first sliding groove is slidably connected to the roller; and adjustment... When the cover rotates downwards, it drives multiple receiving rods to move downwards simultaneously. Since the multiple receiving rods can rotate with the connecting ring, the multiple receiving rods will not interfere with each other due to the rotation of the adjusting cover. Then, the multiple downward-moving receiving rods will drive multiple rollers to slide inside the first slide groove. At this time, the inclined surface of the inner wall of the first slide groove will convert the downward moving force of the receiving rods into a thrust, and drive multiple first mounting sleeves and first secondary cutting edges to rotate away from each other simultaneously. This makes it convenient to adjust the roller cone drill bit by rotating the adjusting cover, and drive multiple first secondary cutting edges to be adjusted and used simultaneously.

4. The energy-saving directional reaming drilling device for coal mines according to claim 1, characterized in that: The mounting plate has several threaded posts fixedly installed on its top surface. The outer circular wall of each threaded post is threaded with a threaded cap. The top surface of the threaded cap is rotatably connected to a support plug. The bottom surface of the mounting block has a positioning hole. The inner circular wall of the positioning hole is movably sleeved with the support plug. Through the threaded transmission between the threaded cap and the threaded post, the threaded cap can drive the support plug to move up or down. After multiple mounting blocks are rotated and used, the support plug can extend into the positioning hole and lock the mounting block to limit and fix its adjustment angle.

5. The energy-saving directional reaming drilling device for coal mines according to claim 3, characterized in that: The top of the mounting plate is detachably equipped with a first protective cover, the inner wall of which is movably connected to the mounting block and the second mounting sleeve respectively. The bottom surface of the mounting plate is detachably equipped with a second protective cover, the inner wall of which is movably connected to the first mounting sleeve. Through the first and second protective covers, the connecting parts of the first secondary cutting edge, the second secondary cutting edge and the roller cone drill bit can be protected when in use, preventing soil or dust inside the mine hole from entering and causing jamming and affecting use.

6. The energy-saving directional reaming drilling device for coal mines according to claim 5, characterized in that: Several first protective sleeves are fixedly installed on the outer circular wall of the second protective cover. The first protective sleeves are elastically connected to the second protective cover and correspond to the position of the first secondary cutting edge. Several second protective sleeves are fixedly installed on the outer circular wall of the first protective cover. The roller cone drill bit is elastically connected to the first protective cover, and the position of the second protective sleeve corresponds to the position of the second secondary cutting edge. Several first limiting covers are fixedly installed on the outer circular wall of the first protective cover. A first winding baffle is fixedly installed on one side of the mounting block and is slidably connected to the first limiting cover. Several second limiting covers are fixedly installed on the top surface of the mounting plate. A second winding baffle is fixedly installed on the other side of the mounting block and is slidably connected to the second limiting cover. Through the first protective sleeves, second protective sleeves, first winding baffles, and second winding baffles, it is convenient to further shield and seal the gaps between the first and second protective covers when multiple second secondary cutting edges, multiple first secondary cutting edges, and multiple mounting blocks are used, preventing soil or dust inside the mine hole from entering the interior of the first and second protective covers and affecting their use.

7. The energy-saving directional reaming drilling device for coal mines according to claim 5, characterized in that: The surfaces of the connecting column, mounting plate, first protective cover and second protective cover are all electroplated with a corrosion-resistant coating, which facilitates rust and corrosion protection when the device is not in use.

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