Quick-replacement drill bit connecting structure for mining engineering

Abstract

The utility model relates to the field of mining drill bit connecting structures, and discloses a quick-change drill bit connecting structure for mining engineering, which comprises a drill bit body and a connecting block, the drill bit body is detachably mounted at the bottom end of the connecting block, a circular threaded groove is formed in the middle of the bottom of the connecting block, and a threaded block is fixed at the top end of the drill bit body. A fixed groove is formed in the middle of the top of the threaded block, a middle groove communicated with the threaded groove is formed in the top of the connecting block, a fixed block is arranged in the middle groove in a liftable mode, the bottom of the fixed block is movably inserted in the fixed groove, and a spring is fixedly connected to the top end of the fixed block and the inner top wall of the middle groove. When the mining drill bit is disassembled and assembled, a large number of bolts do not need to be disassembled and assembled, time consumed for disassembling and assembling the mining drill bit is short, when the mining drill bit is damaged, the mining drill bit can be rapidly replaced, construction efficiency of mining engineering can be improved, stability of connection of the mining drill bit is high, and the situation that the mining drill bit falls off can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of drilling bit connection structures for mining, and in particular to a quick-change drilling bit connection structure for mining engineering. Background Technology

[0002] Mining drill bits are widely used in drilling operations for various mineral deposits, including blasting holes in metallurgical, coal, chemical, building materials, and mining projects. During mining operations, mining drill bits play a crucial role in breaking rocks and forming wellbores. They are a major component of drilling equipment, primarily functioning to break rocks and create wellbores. Rotary drill bits are currently the most commonly used type in the mining industry. Driven by machinery, the rotating drill bit rotates, causing the entire bit to move centripetally. Through cutting and grinding, it fractures and breaks the rock, thus driving the downward drilling process.

[0003] Mining drill bits are typically fixedly connected to the drill bit connection section of the drilling rig. Currently, these drill bits are usually secured to the drill bit connection section using numerous bolts. Disassembling and assembling these drill bits requires removing and installing a large number of bolts, which is time-consuming. Furthermore, it is difficult to quickly replace damaged drill bits, impacting the efficiency of mining operations. Therefore, this paper proposes a quick-change drill bit connection structure for mining engineering to address these problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a quick-change drill bit connection structure for mining engineering, which aims to improve the existing technology that requires the removal and installation of a large number of bolts when disassembling and assembling mining drill bits, which is time-consuming and makes it difficult to quickly replace mining drill bits when they are damaged, thus affecting the construction efficiency of mining engineering.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick-change drill bit connection structure for mining engineering, comprising a drill bit body and a connecting block. The drill bit body is detachably installed at the bottom of the connecting block. A circular threaded groove is formed in the middle of the bottom of the connecting block. A threaded block is fixed at the top of the drill bit body. The threaded block is threaded into the inside of the threaded groove. A fixed groove is formed in the middle of the top of the threaded block. A central groove communicating with the threaded groove is formed at the top of the connecting block. A fixed block is vertically movable inside the central groove. The bottom of the fixed block is movably inserted into the central groove. A spring is fixedly connected to the top of the fixed block and the inner top wall of the central groove. A side hole communicating with the central groove is formed on one side of the connecting block. A horizontal lifting bolt is detachably connected to the side end of the fixed block. The lifting bolt is vertically movable inside the side hole.

[0006] As a further description of the above technical solution:

[0007] The top of the connecting block is fixed with the drill shaft, and the center points of the drill bit body, the connecting block and the drill shaft are located on the same vertical line.

[0008] As a further description of the above technical solution:

[0009] The top of the threaded block contacts the inner top wall of the threaded groove, and the spring is in a contracted state.

[0010] As a further description of the above technical solution:

[0011] The fixed groove is square, the size of the middle groove is adapted to the size of the fixed groove, the inner sidewall of the middle groove is aligned with the inner sidewall of the fixed groove, and the size of the fixed block is adapted to the size of the fixed groove.

[0012] As a further description of the above technical solution:

[0013] A square guide groove is provided in the middle of the top of the fixed block. A vertical limiting post is fixed on the inner top wall of the groove. The bottom of the limiting post is movably inserted into the inside of the guide groove. The size of the guide groove is adapted to the size of the limiting post. The spring is movably sleeved on the outside of the limiting post.

[0014] As a further description of the above technical solution:

[0015] The fixed block has a slot on its side wall that communicates with the side hole. The side end of the lifting bolt is threaded into the inside of the slot. A hexagonal block is fixed to the side end of the lifting bolt away from the fixed block. The side end of the hexagonal block contacts the side end of the connecting block.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, if it is necessary to connect a mining drill bit, the hexagonal block is pushed upward to raise the fixed block, then the threaded block is threaded into the inside of the threaded groove. The hexagonal block is released until the fixed block is inserted into the fixed groove, and the lifting bolt is removed to complete the connection of the mining drill bit. If it is necessary to disassemble the mining drill bit, the lifting bolt is threaded into the inside of the slot, then the hexagonal block is pushed upward until the fixed block is disengaged from the fixed groove. The drill bit body is rotated until the threaded block is disengaged from the threaded groove, and the hexagonal block is released to complete the disassembly of the mining drill bit. When disassembling and assembling the mining drill bit, it is not necessary to remove or install a large number of bolts, and the disassembly and assembly of the mining drill bit is relatively quick. When the mining drill bit is damaged, it can be quickly replaced, which can improve the construction efficiency of mining projects.

[0018] 2. In this utility model, the threaded block is threadedly connected inside the threaded groove, and the fixed block is inserted into the fixed groove, which can achieve a stable fixed connection between the threaded block and the drill bit body. The connection of the mining drill bit is highly stable and can prevent the mining drill bit from falling off. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a quick-change drill bit connection structure for mining engineering proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of a connecting block for a quick-change drill bit connection structure in mining engineering, as proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the internal structure of a fixed block for a quick-change drill bit connection structure in mining engineering proposed in this utility model;

[0022] Figure 4 This utility model proposes a quick-change drill bit connection structure for mining engineering. Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0023] Legend:

[0024] 1. Drill bit body; 2. Connecting block; 3. Hexagonal block; 4. Drill rig spindle; 5. Threaded groove; 6. Threaded block; 7. Fixed groove; 8. Middle groove; 9. Fixed block; 10. Spring; 11. Side hole; 12. Lifting bolt; 13. Slot; 14. Guide groove; 15. Limiting post. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-3This utility model provides an embodiment of a quick-change drill bit connection structure for mining engineering, comprising a drill bit body 1 and a connecting block 2. The drill bit body 1 is detachably installed at the bottom end of the connecting block 2, and a drill shaft 4 is fixed at the top end of the connecting block 2. The center points of the drill bit body 1, the connecting block 2, and the drill shaft 4 are located on the same vertical line, allowing the connecting block 2 and the drill bit body 1 to rotate along the axis with the drill shaft 4. A circular threaded groove 5 is provided in the middle of the bottom of the connecting block 2, and a threaded block 6 is fixed at the top end of the drill bit body 1. The threaded block 6 is threaded into the inside of the threaded groove 5. A fixed groove 7 is provided in the middle of the top of the threaded block 6. A middle groove 8 communicating with the threaded groove 5 is provided in the top of the connecting block 2. A fixed block 9 is provided in the middle groove 8. The bottom of the fixed block 9 is movably inserted into the inside of the fixed groove 7. A spring 10 is fixedly connected to the top of the fixed block 9 and the inner top wall of the middle groove 8. A side hole 11 communicating with the middle groove 8 is provided on one side of the connecting block 2. A horizontal lifting bolt 12 is detachably connected to the side end of the fixed block 9. The lifting bolt 12 can be raised and lowered inside the side hole 11.

[0027] The side wall of the fixed block 9 is provided with a slot 13 that communicates with the side hole 11. The side end of the lifting bolt 12 is threaded into the inside of the slot 13. A hexagonal block 3 is fixed to the side end of the lifting bolt 12 away from the fixed block 9. The side end of the hexagonal block 3 contacts the side end of the connecting block 2. The lifting bolt 12 can be rotated by turning the hexagonal block 3 with a wrench. The lifting bolt 12 can be raised by pushing the hexagonal block 3 upward with a wrench.

[0028] Reference Figures 2-4 The top of the threaded block 6 contacts the inner top wall of the threaded groove 5, and the spring 10 is in a contracted state, so that the bottom end of the spring 10 exerts downward pressure on the fixed block 9, which can prevent the fixed block 9 from rising accidentally and prevent the fixed block 9 from dislodging from the fixed groove 7.

[0029] Reference Figures 2-4 The fixed groove 7 is square, and the size of the middle groove 8 is adapted to the size of the fixed groove 7. The inner sidewall of the middle groove 8 is aligned with the inner sidewall of the fixed groove 7. The size of the fixed block 9 is adapted to the size of the fixed groove 7. Through the guiding effect of the middle groove 8 on the fixed block 9, the fixed block 9 can be raised and lowered stably, which can prevent the fixed block 9 from rotating unexpectedly relative to the connecting block 2. The fixed block 9 is inserted into the interior of the fixed groove 7, which can prevent the threaded block 6 and the drill bit body 1 from rotating unexpectedly relative to the connecting block 2.

[0030] Reference Figures 3-4A square guide groove 14 is provided in the middle of the top of the fixed block 9. A vertical limiting post 15 is fixed on the inner top wall of the middle groove 8. The bottom of the limiting post 15 is movably inserted into the inside of the guide groove 14. The size of the guide groove 14 is adapted to the size of the limiting post 15. Through the guiding effect of the limiting post 15 on the fixed block 9, the fixed block 9 can be raised and lowered stably, which can prevent the fixed block 9 from rotating unexpectedly relative to the connecting block 2. The spring 10 is movably sleeved on the outside of the limiting post 15, and the spring 10 can be stably extended and retracted.

[0031] Working principle: To connect a mining drill bit, push the hexagonal block 3 upwards with a wrench to raise the lifting bolt 12 and the stationary block 9, causing the spring 10 to contract until the bottom of the stationary block 9 is inside the central groove 8. Then, rotate the drill bit body 1 to thread the threaded block 6 into the threaded groove 5 until the top of the threaded block 6 contacts the inner top wall of the threaded groove 5, making the stationary groove 7 connected and aligned with the central groove 8. Then, release the hexagonal block 3. The elastic force of the spring 10 causes the spring 10 to extend, and the bottom of the spring 10 causes the stationary block 9 and the lifting bolt 12 to descend until the bottom of the stationary block 9 is inserted into the stationary groove 7, thus fixing the drill bit body 1 in place. Finally, rotate the hexagonal block 3 with a wrench to rotate the lifting bolt 12, causing the lifting bolt 12 to disengage from the slot 13. Remove the lifting bolt 12 to complete the connection of the mining drill bit. If it is necessary to disassemble the mining drill bit, turn the wrench to rotate the hexagonal block 3 to connect the lifting bolt 12 to the inside of the slot 13. Then, push the hexagonal block 3 upward with the wrench to drive the lifting bolt 12 and the fixed block 9 to rise, causing the spring 10 to contract until the fixed block 9 is disengaged from the fixed slot 7. Then, rotate the drill bit body 1 to drive the threaded block 6 to rotate until the threaded block 6 is disengaged from the threaded groove 5. Then, release the hexagonal block 3. The elastic force of the spring 10 will cause the spring 10, the fixed block 9 and the lifting bolt 12 to return to their original positions, thus completing the disassembly of the mining drill bit. When disassembling and assembling the mining drill bit, it is not necessary to remove or install a large number of bolts. The disassembly and assembly of the mining drill bit is relatively quick. When the mining drill bit is damaged, it can be quickly replaced, which can improve the construction efficiency of mining projects.

[0032] The threaded block 6 is threaded into the inside of the threaded groove 5, which can achieve a fixed connection to the drill bit body 1. The fixed block 9 is inserted into the inside of the fixed groove 7, which can prevent the threaded block 6 and the drill bit body 1 from rotating unexpectedly relative to the connecting block 2. The threaded block 6 and the drill bit body 1 can achieve a stable fixed connection, and the connection of the mining drill bit is highly stable, which can prevent the mining drill bit from falling off.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-change drill bit connection structure for mining engineering, comprising a drill bit body (1) and a connecting block (2), characterized in that: The drill bit body (1) is detachably mounted at the bottom end of the connecting block (2), a circular threaded groove (5) is formed in the middle of the bottom of the connecting block (2), a threaded block (6) is fixed at the top end of the drill bit body (1), the threaded block (6) is threadedly sleeved in the threaded groove (5), a positioning groove (7) is formed in the middle of the top of the threaded block (6), a middle groove (8) is formed in the top of the connecting block (2) and communicates with the threaded groove (5), a positioning block (9) is movably arranged in the middle groove (8), the bottom of the positioning block (9) is movably inserted into the positioning groove (7), a spring (10) is fixedly connected between the top end of the positioning block (9) and the inner top wall of the middle groove (8), a side hole (11) is formed in one side of the connecting block (2) and communicates with the middle groove (8), and a horizontal lifting pin (12) is detachably connected to the side end of the positioning block (9) and movably arranged in the side hole (11).

2. The quick-change bit connection structure for mining engineering according to claim 1, characterized in that: The top end of the connecting block (2) is fixed with a drilling machine rotating shaft (4), and the center points of the drill bit body (1), the connecting block (2) and the drilling machine rotating shaft (4) are located on the same vertical line.

3. The quick-change bit connection structure for mining engineering according to claim 1, characterized in that: The top end of the threaded block (6) is in contact with the inner top wall of the threaded groove (5), and the spring (10) is in a contracted state.

4. The quick-change bit connection structure for mining engineering according to claim 1, characterized in that: The positioning groove (7) is square-shaped, the size of the middle groove (8) is matched with the size of the positioning groove (7), the inner side wall of the middle groove (8) is aligned with the inner side wall of the positioning groove (7), and the size of the positioning block (9) is matched with the size of the positioning groove (7).

5. The quick-change bit connection structure for mining engineering according to claim 1, characterized in that: A square-shaped guide groove (14) is formed in the middle of the top of the positioning block (9), a vertical limiting column (15) is fixed to the inner top wall of the middle groove (8), the bottom of the limiting column (15) is movably inserted into the guide groove (14), the size of the guide groove (14) is matched with the size of the limiting column (15), and the spring (10) is movably sleeved outside the limiting column (15).

6. The quick-change bit connection structure for mining engineering according to claim 1, characterized in that: A slot (13) is formed in the side wall of the positioning block (9) and communicates with the side hole (11), the side end of the lifting pin (12) is threadedly connected to the inside of the slot (13), a hexagonal block (3) is fixed to the side end of the lifting pin (12) away from the positioning block (9), and the side end of the hexagonal block (3) is in contact with the side end of the connecting block (2).

Images