Multi-purpose hole enlarging drill bit and use method

Abstract

The present invention discloses a multi-purpose reaming drill bit and a method of using the multi-purpose reaming drill bit, comprising a reaming drill bit body, wherein the reaming drill bit body is provided with an internal chamber of the drill bit, a guide head is fixedly connected to the top surface of the internal chamber of the drill bit, a pick installation step is provided through the inner wall of the internal chamber of the drill bit and the side of the reaming drill bit body, a pick installation step is slidably connected to the inner wall of the pick installation step, a threaded tube is fixedly connected to the side of the pick installation step close to the internal chamber of the drill bit, a threaded rod is threadedly connected to the inner wall of the threaded tube, and a rotating rod is fixedly connected to the end of the threaded rod. In use, the effect of facilitating the adjustment of the diameter of the reaming drill bit is achieved, avoiding the bad situation that the reaming diameter can only be changed by replacing the drill bit, effectively saving construction costs, achieving the purpose of facilitating the satisfaction of different reaming diameter requirements during the construction process, effectively improving work efficiency, being more convenient to use, and having good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel support construction equipment, and in particular to a multi-purpose hole-reaming drill bit and a use method thereof. Background Art

[0002] Because constant resistance anchor cables have the characteristics of energy absorption and large deformation, they are increasingly used in mine tunnels, tunnels and slope support. However, before installing constant resistance anchor cables, it is necessary to first use a pneumatic anchor drill or a crawler anchor drill to drill anchor cable holes, and then expand the holes to a certain depth to install constant resistance devices. Different specifications of anchor cables require different specifications of constant resistance devices, so a multi-purpose expansion drill bit that can change the expansion diameter is required during the expansion construction.

[0003] Existing reaming drill bits on the market generally have fixed diameters, and it is difficult to adjust the diameter of the reaming drill bits. If the diameter of the reaming needs to be changed at the construction site, the only option is to replace the reaming drill bits with different diameters, which is very troublesome to operate and also increases the construction cost. It is difficult to meet the demand for different reaming diameters during the construction process, which reduces the construction efficiency and is very inconvenient to use. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a multi-purpose reaming drill bit and a method of use, which solves the problem that the existing reaming drill bits are difficult to adjust the reaming drill bit diameter and are difficult to meet the requirements for different reaming diameters during construction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The camming head is provided with a toothed groove, and the toothed groove is provided with a toothed groove on the top surface of the toothed groove.

[0007] Preferably, a connecting block is fixedly connected to the bottom surface of the reaming drill body, a base is slidably connected to the side of the connecting block, a spring is fixedly connected to the middle of the bottom surface of the connecting block, and a support block is fixedly connected to the bottom surface of the spring.

[0008] Preferably, buffer blocks are fixedly connected to the left and right sides of the bottom surface of the connecting block, and the buffer blocks are made of rubber. The base is a box-shaped structure, and the middle part of the top surface of the base is in a through state.

[0009] Preferably, the number of the pick mounting steps is three, and the angle between every two pick mounting steps is one hundred and twenty degrees.

[0010] Preferably, the three threaded tubes, threaded rod, rotating rod, rotating hole and hand-held knob are located in different horizontal planes.

[0011] Preferably, the anti-slip strip is made of rubber.

[0012] A multi-purpose hole-reaming drill bit, and a method of using the same is as follows;

[0013] S1. By rotating the hand-held knob, the rotating rod is driven to rotate, and then the threaded rod is driven to rotate. Under the action of the thread of the threaded pipe, the threaded pipe is pushed to move horizontally, thereby driving the pick part to extend from the pick installation step. By adjusting the extension length of the three pick parts, the expansion diameter can be adjusted;

[0014] S2. When the main body of the reaming drill bit vibrates, it will drive the connecting block to descend and compress the spring, and the spring will undergo elastic deformation to absorb the vibration. The connecting block continues to descend, driving the buffer block to touch the bottom of the inner wall of the base, so that the buffer block undergoes elastic deformation to absorb the vibration. During use, the effect of reducing the vibration generated during the reaming operation is achieved, so that the vibration is smaller when the drill bit is used, and at the same time, excessive vibration that affects the reaming accuracy is avoided.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The multi-purpose reaming drill bit rotates the hand-held knob to drive the rotating rod to rotate, and then drives the threaded rod to rotate. Under the action of the thread of the threaded tube, the threaded tube is pushed to move in the horizontal direction, thereby driving the pick part to extend from the pick installation step. By adjusting the extension length of the three pick parts, the reaming diameter can be adjusted. The effect of facilitating the adjustment of the reaming drill bit diameter is achieved during use, avoiding the bad situation that the reaming diameter can only be changed by replacing the drill bit, effectively saving construction costs, and achieving the purpose of facilitating meeting the needs of different reaming diameters during the construction process, effectively improving work efficiency, and being more convenient to use and more practical.

[0017] 2. When the main body of the reaming drill bit vibrates, it will drive the connecting block to descend and compress the spring. The spring will undergo elastic deformation to absorb the vibration. The connecting block will continue to descend, driving the buffer block to touch the bottom of the inner wall of the base, causing the buffer block to undergo elastic deformation to absorb the vibration. This can reduce the vibration generated during the reaming operation, making the drill bit more comfortable to use and avoiding excessive vibration that affects the reaming accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the reaming drill bit of the present invention;

[0019] Figure 2 It is a top cross-sectional view of the structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the anti-slip strip structure of the present invention;

[0021] Figure 4 It is a front cross-sectional view of the guide head structure of the present invention;

[0022] Figure 5 It is a front cross-sectional view of the local structure of the present invention.

[0023] In the figure: 1 reaming drill body, 2 drill internal chamber, 3 guide head, 4 pick mounting step, 5 pick portion, 6 threaded tube, 7 threaded rod, 8 rotating rod, 9 rotating hole, 10 hand-held knob, 11 anti-slip strip, 12 first guide hole, 13 second guide hole, 14 connecting block, 15 base, 16 spring, 17 support block, 18 buffer block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1: Reference Figure 1-4A multi-purpose reaming drill bit and a method of using the same include a reaming drill bit body 1, a drill bit internal chamber 2 is provided inside the reaming drill bit body 1, a guide head 3 is fixedly connected to the top surface of the drill bit internal chamber 2, a pick mounting step 4 is provided through the inner wall of the drill bit internal chamber 2 and the side of the reaming drill bit body 1, the number of the pick mounting steps 4 is three, and the angle between every two pick mounting steps 4 is 120 degrees, a pick portion 5 is slidably connected to the inner wall of the pick mounting step 4, and a threaded tube is fixedly connected to the side of the pick portion close to the drill bit internal chamber 2 6, the inner wall of the threaded tube 6 is threadedly connected with a threaded rod 7, and the end of the threaded rod 7 is fixedly connected with a rotating rod 8. A rotating hole 9 is opened through the inner wall of the internal chamber 2 of the drill bit and the side of the reaming drill body 1, and the surface of the rotating rod 8 is rotatably connected to the inner wall of the rotating hole 9, and the end of the rotating rod 8 is fixedly connected with a hand-held knob 10. The three threaded tubes 6, the threaded rod 7, the rotating rod 8, the rotating hole 9 and the hand-held knob 10 are located at different horizontal planes. By being arranged at different horizontal planes, the normal extension and retraction of the pick 5 can be ensured. The surface of the hand-held knob 10 is fixedly connected with an anti-slip strip 11. The anti-slip strip 11 is made of rubber material, so that the user's hand is not easy to slip when turning the hand-held knob 10, and it is more convenient to use. The top and bottom surfaces of the reaming drill bit body 1 are penetrated with a first guide hole 12, and the left and right sides of the guide head 3 are transversely penetrated with a second guide hole 13. By setting the first guide hole 12 and the second guide hole 13, the heat dissipation efficiency during the reaming process can be improved to avoid damage caused by overheating. By rotating the hand-held knob 10, the rotating rod 8 is driven to rotate, and then the threaded rod 7 is driven to rotate. Under the action of the thread of the threaded tube 6, the threaded tube 6 is pushed to move horizontally, thereby driving the pick 5 to extend from the pick installation step 4. By adjusting the extension length of the three picks 5, the reaming diameter can be adjusted. In use, the effect of facilitating the adjustment of the diameter of the reaming drill bit is achieved, avoiding the bad situation that the reaming diameter can only be changed by replacing the drill bit, effectively saving construction costs, and achieving the purpose of facilitating meeting the requirements for different reaming diameters during construction, effectively improving work efficiency, and being more convenient to use and having better practicality.

[0026] Example 2: Reference Figure 1-5A multi-purpose reaming drill bit and a method of using the same include a reaming drill bit body 1, a drill bit internal chamber 2 is provided inside the reaming drill bit body 1, a guide head 3 is fixedly connected to the top surface of the drill bit internal chamber 2, a pick mounting step 4 is provided through the inner wall of the drill bit internal chamber 2 and the side of the reaming drill bit body 1, the number of the pick mounting steps 4 is three, and the angle between every two pick mounting steps 4 is 120 degrees, a pick portion 5 is slidably connected to the inner wall of the pick mounting step 4, a threaded tube 6 is fixedly connected to the side of the pick portion close to the drill bit internal chamber 2, and the threaded tube 6 The inner wall is threadedly connected with a threaded rod 7, and the end of the threaded rod 7 is fixedly connected with a rotating rod 8. A rotating hole 9 is provided through the inner wall of the internal chamber 2 of the drill bit and the side of the reaming drill body 1, and the surface of the rotating rod 8 is rotatably connected to the inner wall of the rotating hole 9. A hand-held knob 10 is fixedly connected to the end of the rotating rod 8. The three threaded tubes 6, the threaded rod 7, the rotating rod 8, the rotating hole 9 and the hand-held knob 10 are located at different horizontal planes. By being arranged at different horizontal planes, the normal extension and retraction of the pick 5 can be ensured. The surface of the hand-held knob 10 is fixedly connected with an anti-slip strip 11, and the anti-slip strip 11 is made of rubber material. The invention is made so that the user's hand is not easy to slip when turning the hand-held knob 10, and it is more convenient to use. The top and bottom surfaces of the reaming drill bit body 1 are penetrated with a first guide hole 12, and the left and right surfaces of the guide head 3 are transversely penetrated with a second guide hole 13. By setting the first guide hole 12 and the second guide hole 13, the high-pressure water in the drill rod can improve the heat dissipation efficiency during the reaming process, avoid damage caused by overheating, and reduce dust during the reaming process. By rotating the hand-held knob 10, the rotating rod 8 is driven to rotate, and then the threaded rod 7 is driven to rotate. Under the action of the thread of the threaded tube 6, the threaded tube 6 is pushed to move horizontally, thereby driving the pick 5 to extend from the pick installation step 4. By adjusting the extension length of the three picks 5, the reaming diameter can be adjusted. In use, the effect of facilitating the adjustment of the diameter of the reaming drill bit is achieved, avoiding the bad situation that the reaming diameter can only be changed by replacing the drill bit, effectively saving the construction cost, and achieving the purpose of facilitating the satisfaction of different reaming diameter requirements during the construction process, effectively improving the work efficiency, and being more convenient to use and having better practicality.

[0027] A connecting block 14 is fixedly connected to the bottom surface of the reaming drill body 1, and a base 15 is slidably connected to the side of the connecting block 14. A spring 16 is fixedly connected to the middle part of the bottom surface of the connecting block 14, and a supporting block 17 is fixedly connected to the bottom surface of the spring 16. Buffer blocks 18 are fixedly connected to the left and right sides of the bottom surface of the connecting block 14, and the buffer blocks 18 are made of rubber. The base 15 is a box-shaped structure, and the middle part of the top surface of the base 15 is in a through state. When the reaming drill body 1 vibrates, the connecting block 14 will be driven to descend and compress the spring 16, and the vibration will be absorbed by the elastic deformation of the spring 16. The connecting block 14 continues to descend, driving the buffer block 18 to touch the bottom of the inner wall of the base 15, so that the buffer block 18 undergoes elastic deformation to absorb vibration, which achieves the effect of facilitating the reduction of vibration generated during the reaming operation during use, making the drill bit more comfortable to use and avoiding excessive vibration that affects the reaming accuracy.

[0028] During use: by rotating the hand-held knob 10, the rotating rod 8 is driven to rotate inside the rotating hole 9, and then the threaded rod 7 is driven to rotate. Under the action of the thread of the threaded tube 6, the threaded tube 6 is pushed to move horizontally, thereby driving the pick part 5 to extend and retract in the pick installation step 4. By adjusting the extension length of the three pick parts 5, the expansion diameter can be adjusted.

[0029] A multi-purpose hole-reaming drill bit, and a method of using the same is as follows;

[0030] S1. By rotating the hand-held knob 10, the rotating rod 8 is driven to rotate, and then the threaded rod 7 is driven to rotate. Under the action of the thread of the threaded tube 6, the threaded tube 6 is pushed to move horizontally, thereby driving the pick 5 to extend from the pick installation step 4. By adjusting the extension length of the three picks 5, the diameter of the expanded hole can be adjusted;

[0031] S2. When the reaming drill body 1 vibrates, it will drive the connecting block 14 to descend and compress the spring 16. The spring 16 will undergo elastic deformation to absorb the vibration. The connecting block 14 will continue to descend, driving the buffer block 18 to contact the bottom of the inner wall of the base 15, so that the buffer block 18 will undergo elastic deformation to absorb the vibration. This can reduce the vibration generated during the reaming operation, making the drill more comfortable to use and avoiding excessive vibration that affects the reaming accuracy.

[0032] In summary, the multi-purpose reaming drill bit, by rotating the hand-held knob 10, drives the rotating rod 8 to rotate, and then drives the threaded rod 7 to rotate, and the threaded tube 6 is pushed to move in the horizontal direction under the action of the thread of the threaded tube 6, thereby driving the pick portion 5 to extend from the pick mounting step 4, and the diameter of the hole can be adjusted by adjusting the extension length of the three pick portions 5. The effect of facilitating the adjustment of the diameter of the reaming drill bit is achieved during use, avoiding the bad situation that the diameter of the hole can only be changed by replacing the drill bit, effectively saving construction costs, and achieving the purpose of facilitating meeting the needs of different hole expansion diameters during the construction process, effectively improving work efficiency, and making It is more convenient to use and has better practicality. When the reaming drill body 1 vibrates, it will drive the connecting block 14 to descend and compress the spring 16. The spring 16 undergoes elastic deformation to absorb the vibration. The connecting block 14 continues to descend, driving the buffer block 18 to touch the bottom of the inner wall of the base 15, so that the buffer block 18 undergoes elastic deformation to absorb the vibration. During use, it is easy to reduce the vibration generated during the reaming operation, making it more comfortable to use the drill bit, while avoiding excessive vibration that affects the reaming accuracy, and solving the problem that it is difficult to adjust the diameter of the reaming drill bit in the existing reaming drill bit, and it is difficult to meet the requirements for different reaming diameters during construction.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-purpose reaming drill bit, comprising a reaming drill bit body (1), characterized in that: The reaming drill bit body (1) is provided with a drill bit internal chamber (2), the top surface of the drill bit internal chamber (2) is fixedly connected with a guide head (3), the inner wall of the drill bit internal chamber (2) and the side of the reaming drill bit body (1) are provided with a pick tooth installation step (4), the inner wall of the pick tooth installation step (4) is slidably connected with a pick tooth portion (5), the side of the pick tooth portion close to the drill bit internal chamber (2) is fixedly connected with a threaded tube (6), the inner wall of the threaded tube (6) is threadedly connected with a threaded rod (7), and the end of the threaded rod (7) is fixedly connected to the inner wall of the threaded tube (6). A rotating rod (8) is fixedly connected, a rotating hole (9) is formed through the inner wall of the internal chamber (2) of the drill bit and the side of the reaming drill bit body (1), and the surface of the rotating rod (8) is rotatably connected to the inner wall of the rotating hole (9), a hand-held knob (10) is fixedly connected to the end of the rotating rod (8), and an anti-slip strip (11) is fixedly connected to the surface of the hand-held knob (10), a first guide hole (12) is formed through the top and bottom surfaces of the reaming drill bit body (1), and a second guide hole (13) is formed through the left and right sides of the guide head (3); The bottom surface of the reamer drill body (1) is fixedly connected to a connection block (14), the side of the connection block (14) is slidably connected to a base (15), the middle of the bottom surface of the connection block (14) is fixedly connected to a spring (16), and the bottom surface of the spring (16) is fixedly connected to a support block (17); The left side and the right side of the bottom surface of the connection block (14) are both fixedly connected with a buffer block (18), and the buffer block (18) is made of rubber. The base (15) is a box-shaped structure, and the middle part of the top surface of the base (15) is in a through state.

2. A multi-purpose reaming drill bit according to claim 1, characterized in that: The number of the pick mounting steps (4) is three, and the angle between every two pick mounting steps (4) is one hundred and twenty degrees.

3. A multi-purpose reaming drill bit according to claim 2, characterized in that: The three threaded tubes (6), the threaded rod (7), the rotating rod (8), the rotating hole (9) and the hand-held knob (10) are located at different horizontal planes.

4. A multi-purpose reaming drill bit according to claim 1, characterized in that: The anti-slip strip (11) is made of rubber material.

5. A method for using a multi-purpose reaming drill bit, based on the multi-purpose reaming drill bit according to any one of claims 1 to 4, comprising the following steps: S1. By rotating the hand-held knob (10), the rotating rod (8) is driven to rotate, and then the threaded rod (7) is driven to rotate, and the threaded tube (6) is pushed to move in the horizontal direction under the action of the thread of the threaded tube (6), thereby driving the pick part (5) to extend from the pick installation step (4). By adjusting the extension length of the three pick parts (5), the diameter of the expanded hole can be adjusted; S2. When the reaming drill bit body (1) vibrates, it drives the connecting block (14) to descend and compress the spring (16), so that the spring (16) undergoes elastic deformation to absorb the vibration. The connecting block (14) continues to descend, driving the buffer block (18) to contact the bottom of the inner wall of the base (15), so that the buffer block (18) undergoes elastic deformation to absorb the vibration.

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