Drill pipe assembly

Abstract

The present invention relates to a drilling pipe mechanism, comprising: two drill pipes, a limiting block, a pin, and a retaining ring. Each drill pipe has a hole, and the two drill pipes are connected to each other, so that the holes of the two drill pipes are interconnected to form a pin insertion channel. In addition, the limiting block is formed inside the pin insertion channel, and the pin can simultaneously penetrate the holes of the two drill pipes to prevent the two drill pipes from separating from each other. The retaining ring is disposed inside the pin insertion channel and is arranged at intervals with the limiting block. The stop portion and the limiting block respectively contact different sides of the pin, thereby the stop portion and the limiting block can jointly restrict the pin to be located inside the pin insertion channel to prevent the pin from separating from the pin insertion channel, thereby preventing the two drill pipes from separating from each other and increasing the connection strength between the two drill pipes.

Description

Technical Field

[0001] The present invention relates to a drilling pipe mechanism for excavating foundation piles, and more particularly to a drilling pipe mechanism that prevents two drilling pipes from separating from each other. Prior Technology

[0002] With the rapid development of urban construction, before building high-rise buildings, drilling rigs need to drill downwards to form pile holes. Then, piles are buried inside the pile holes to build a solid foundation, which can effectively prevent high-rise buildings from tilting and collapsing.

[0003] Please refer to Figure 1A. During the process of excavating a foundation 64 inside a pile hole 63 by a drilling rig, construction workers will place a conventional excavation drilling mechanism 60 inside the pile hole 63. This allows the plurality of drill pipes 61 of the conventional excavation drilling mechanism 60 to be close to the hole wall of the pile hole 63. The plurality of drill pipes 61 can then work together to stabilize the hole wall of the pile hole 63 to prevent the collapse of soil or rock from damaging the drilling rig 40. In addition, the plurality of drill pipes 61 can also isolate different groundwater layers, so that groundwater is blocked by the plurality of drill pipes 61 and does not accumulate inside the pile hole 63. This avoids excessive groundwater accumulation inside the pile hole 63, which would affect the excavation of the foundation 64 by the drilling rig 40, thereby ensuring the quality and safety of the project.

[0004] Please refer to Figure 1B. In the conventional excavation drilling mechanism 60, each pair of drill pipes 61 are connected to each other by a plurality of pins 62. When the drilling machine 40 excavates the foundation 64, the drilling machine 40 rotates, causing the plurality of drill pipes 61 to vibrate. The vibrating drilling action of the pins 62 makes it easy for the pins 62 to move axially relative to the drill pipes 61. When the pins 62 are displaced under the influence of the vibration of the drill pipes 61, the stability of the pins 62 connected between the two drill pipes 61 will be weakened, thereby increasing the possibility that the pins 62 will detach from the two drill pipes 61 at the same time. Once the pins 62 detach from the drill pipes 61 during the excavation of the foundation 64 by the drilling machine 40, the connection strength between the two drill pipes 61 will be significantly reduced, which will affect the stability of the hole wall of the pile hole 63. This will not only increase the risk of soil or rock collapse, but may also have an adverse impact on construction safety and project quality. Summary of the Invention

[0005] The main objective of this invention is to improve the structural stability of the excavation drilling pipe mechanism, thereby effectively overcoming the lack of displacement of the pin relative to the drilling pipe caused by the vibration of the drilling pipe during the excavation of the foundation by the drilling machine. The improved excavation drilling pipe mechanism can ensure that the pin can be stably connected to the two drilling pipes under the high-speed rotation of the drilling machine, thereby avoiding the separation of the two drilling pipes. Compared with the drilling machine excavating the foundation, it not only improves the stability of the hole wall, but also reduces the risk of soil or rock collapse.

[0006] To achieve the above objectives, the present invention provides a drilling pipe mechanism, which includes: a first drill pipe, a second drill pipe, a limiting block, a pin, and a retaining ring.

[0007] The first drill pipe has a first hole, and the inside of the first hole has a buckle groove. The second drill pipe has a second hole and is connected to the first drill pipe, such that the first hole is aligned with the second hole to form a pin insertion channel.

[0008] The aforementioned limiting blocks are formed inside the aforementioned pin insertion channel and are spaced apart in the aforementioned buckle groove. The aforementioned pin is inserted into the aforementioned pin insertion channel, such that the aforementioned pin is simultaneously located inside the aforementioned first hole and inside the aforementioned second hole to prevent the aforementioned first drill pipe from separating from the aforementioned second drill pipe. The aforementioned buckle is disposed in the aforementioned buckle groove and is spaced apart in the aforementioned stop block. It has a deformable part located inside the aforementioned buckle groove and a stop part located inside the aforementioned pin insertion channel. The aforementioned stop part and the limiting block respectively contact different sides of the aforementioned pin, such that the aforementioned stop part and the limiting block can jointly prevent the aforementioned pin from separating from the aforementioned pin insertion channel.

[0009] In one embodiment, the limiting block is located inside the second hole and contacts one end of the pin, while the stop portion contacts the other opposite end of the pin, such that the pin is located between the limiting block and the stop portion.

[0010] In another embodiment, the limiting block is located inside the first hole and the second hole, and forms a limiting through hole. The pin has a rod that can pass through the limiting through hole and a head with a profile larger than the rod. The head is located between the limiting block and the stop, so that the opposite sides of the head can be contacted by the limiting block and the stop, respectively.

[0011] The aforementioned limiting through hole has a through hole in the central region of the limiting block and an alignment hole around the through hole. The rod has a body that can pass through the through hole and an alignment block extending from the body. The alignment block can pass through the alignment hole simultaneously with the body. When the alignment block passes through the alignment hole, the pin rotates relative to the limiting block, causing the alignment block to move away from the alignment hole and become adjacent to the limiting block.

[0012] In the two embodiments described above, the first drill pipe has a first tube body and a plurality of first connecting sleeves. The first tube body forms a plurality of first connecting spaces, and each of the first connecting spaces is used to accommodate one of the first connecting sleeves. Each of the first connecting sleeves forms the first hole and the retaining ring groove. The second drill pipe has a second tube body and a plurality of second connecting sleeves. The second tube body forms a plurality of second connecting spaces to accommodate one of the second connecting sleeves in a one-to-one manner. Each of the second connecting sleeves forms the second hole.

[0013] Furthermore, the first tube has a first connecting ring portion forming the first connecting space and a first tube portion with a thickness greater than the first connecting ring portion. The first connecting ring portion is formed on the outer edge of the first tube portion. The second tube has a second connecting ring portion forming the second connecting space and a second tube portion with a thickness greater than the second connecting ring portion. The second connecting ring portion is formed on the inner edge of the second tube portion. When the first drill pipe is connected to the second drill pipe, the first connecting ring portion is located on the outer edge of the second connecting ring portion, and the combined thickness of the first connecting ring portion and the second connecting ring portion is equal to the thickness of the first tube portion and the thickness of the second tube portion.

[0014] Furthermore, the first connecting sleeve has a first shaft portion and a first wheel portion with a profile larger than the first shaft portion. The first connecting space has a first inner region near the inner edge of the first tube and a first outer region near the outer edge of the first tube. The profile of the first inner region is smaller than that of the first outer region and is used to accommodate the first shaft portion. The first wheel portion is welded to the first outer region, such that the first wheel portion is located inside the first outer region.

[0015] The second connecting sleeve has a second shaft portion and a second wheel portion with a profile larger than the second shaft portion. The second connecting space has a second inner region near the inner edge of the second tube and a second outer region near the outer edge of the second tube. The profile of the second inner region is larger than that of the second outer region and is used to accommodate the second wheel portion. The second shaft portion is welded to the second outer region, such that the second shaft portion is located inside the second outer region.

[0016] The invention is characterized by inserting the pin wire first into the pin insertion channel, and then setting the retaining ring in the retaining ring groove. The stop part and the limiting block of the retaining ring respectively contact different sides of the pin, so that the stop part and the limiting block can jointly prevent the pin from separating from the pin insertion channel. In this way, even if the drill pipe vibrates during the drilling machine's excavation of the foundation, the stop part and the limiting block respectively contacting different sides of the pin can effectively prevent the pin from moving inside the pin insertion channel, ensuring that the pin can be stably connected to the first drill pipe and the second drill pipe under the high-speed rotation of the drilling machine, thereby avoiding the situation where the first drill pipe separates from the second drill pipe. Compared with the drilling machine's excavation of the foundation, it not only improves the stability of the pile hole wall, but also reduces the risk of soil or rock collapse, avoiding potential risks and adverse effects caused by the loosening of the drill pipe. Simple Explanation of the Diagram

[0017] Figure 1A is a schematic diagram of a conventional excavation drilling mechanism placed inside a pile hole; Figure 1B is a cross-sectional view of a conventional excavation drill pipe mechanism; Figure 2 is a perspective view of the excavation drilling mechanism of the present invention; Figure 3 is a cross-sectional perspective view of the excavation drill pipe mechanism of the present invention in a first preferred embodiment; Figure 4 is a partial exploded view of the excavation drill pipe mechanism of the present invention in a first preferred embodiment; Figure 5 is a partial cross-sectional view of the excavation drill pipe mechanism of the present invention in a first preferred embodiment; Figure 6 is a partial exploded cross-sectional view of the excavation drill pipe mechanism of the present invention in the first preferred embodiment; Figure 7A is a schematic diagram of the excavation drilling mechanism installed inside the pile hole in the first preferred embodiment of the present invention; Figure 7B is a schematic diagram showing the vibration generated by the drill pipe during the excavation of the foundation by the drilling rig; Figure 8 is a partial exploded view of the excavation drill pipe mechanism of the present invention in a second preferred embodiment; Figure 9 is a partial cross-sectional view of the excavation drill pipe mechanism of the present invention in a second preferred embodiment; Figure 10 is a partial exploded view of the excavation drill pipe mechanism of the present invention in a third preferred embodiment; Figure 11 is a partial cross-sectional view of the excavation drill pipe mechanism of the present invention in a third preferred embodiment; Figure 12 is a partial exploded view of the excavation drill pipe mechanism of the present invention in a fourth preferred embodiment; and Figure 13 is a partial cross-sectional view of the excavation drilling mechanism in the fourth preferred embodiment of the present invention. Implementation

[0018] To facilitate a deeper and more detailed understanding of the structure, use, and features of the present invention, preferred embodiments are described below in conjunction with the accompanying drawings:

[0019] Please refer to Figures 2, 3, 4, 5, and 6. In the first preferred embodiment, the excavation drilling mechanism 1 of the present invention mainly consists of a first drill pipe 10, a second drill pipe 20, and a plurality of connecting devices 30. The first drill pipe 10 has a first pipe body 11 and a plurality of first connecting sleeves 12. The first pipe body 11 is a hollow cylinder. From top to bottom, the first pipe body 11 is sequentially provided with a first pipe section 111 and a first connecting ring section 112 with a thickness less than the first pipe section 111. The first connecting ring section 112 is formed on the outer edge of the first pipe section 111. A plurality of first connecting spaces 113 are formed through the first connecting ring section 112 and arranged in a ring-like interval along the first connecting ring section 112. Each first connecting space 113 is used to accommodate one of the first connecting sleeves 12. In this embodiment, a portion of the first connecting space 113 is located near the inner edge of the first connecting sleeve 12 and is designated as a first inner... Region 113a, and the remaining space of the first connecting space 113 is set as a first outer region 113b with a larger outline than the first inner region 113a, near the outer edge of the first connecting sleeve 12. The first connecting sleeve 12 is provided with a first shaft portion 121 and a first wheel portion 122 with a larger outline than the first shaft portion 121, so that the first connecting sleeve 12 has a multi-segment column appearance. Furthermore, the first connecting sleeve 12 extends from the first shaft portion 121 toward the first wheel portion 122 to form a first hole 123 located inside the first connecting sleeve 12. The first hole 123 is recessed at the end away from the first shaft portion 121 to form a buckle groove 124, as shown in the figure. When the first connecting sleeve 12 is located inside the first connecting space 113, the first inner region 113a is used to accommodate the first shaft portion 121, and the first wheel portion 122 is welded to the first outer region 113b, so that the first wheel portion 122 is located inside the first outer region 113b.

[0020] Furthermore, the second drill pipe 20 is located below the first drill pipe 10, and the second drill pipe 20 has a second pipe body 21 and a plurality of second connecting sleeves 22. The second pipe body 21 is hollow cylindrical, and from bottom to top, the second pipe body 21 has a second pipe section 211 and a second connecting ring section 212 with a thickness less than the second pipe section 211. The second connecting ring section 212 is formed on the inner edge of the second pipe section 211, and a plurality of second connecting spaces 213 are formed through the second connecting ring section 212 in a ring-shaped interval. Each second connecting space 213 is used to accommodate one of the second connecting sleeves 22. In this embodiment, a partial space of the second connecting space 213 near the inner edge of the second connecting sleeve 22 is set as a second inner region 213a. The remaining space of the second connecting space 213 is located near the outer edge of the second connecting sleeve 22 and is set as a second outer region 213b with a contour smaller than the second inner region 213a. The second connecting sleeve 22 has a second shaft portion 221 and a second wheel portion 222 with a contour larger than the second shaft portion 221, so that the second connecting sleeve 22 has a multi-segment columnar appearance. Furthermore, the second connecting sleeve 22 forms a second hole 223 located inside the second connecting sleeve 22, extending from the second shaft portion 221 toward the second wheel portion 222. As shown in the figure, when the second connecting sleeve 22 is located inside the second connecting space 213, the second inner region 213a is used to accommodate the second wheel portion 222, while the second shaft portion 221 is welded to the second outer region 213b, so that the second shaft portion 221 is located inside the second outer region 213b.

[0021] Please refer to Figures 4 and 5. The lower end of the first drill pipe 10 is connected to the upper end of the second drill pipe 20. The first connecting part of the first drill pipe 10 is inserted between the second pipe part 211 and the second connecting ring part 212 of the second drill pipe 20. Thus, the first connecting ring part 112 is located on the periphery of the second connecting ring part 212. Therefore, the first hole 123 of each first drill pipe 10 is connected to one of the second holes 223 of each second drill pipe 20 to form a plurality of pin insertion channels T. In this embodiment, when the first drill pipe 10 is connected to the second drill pipe 20, the thickness formed by the first connecting ring part 112 and the second connecting ring part 212 is equal to the thickness of the first pipe part 111 and the thickness of the second pipe part 211.

[0022] Please refer to Figures 4, 5, and 6. Each connecting device 30 is disposed in one of the pin-through channels T. Each connecting device 30 mainly consists of a limiting block 31, a pin 32, and a retaining ring 33. As shown, the limiting block 31 extends from the second drill pipe 20 into the second hole 223 of the second drill pipe 20, so that the limiting block 31 is formed inside the pin-through channel T. The limiting blocks 31 are then spaced apart in the retaining ring groove 124 of the first drill pipe 10. In addition, the pin 32 is inserted into the pin-through channel T, so that the pin 32 moves from the first hole 123 of the first drill pipe 10 toward the inside of the second hole 223. The entire pin 32 passes through the retaining ring groove 124, allowing one end of the pin 32 to contact the limiting block 31. Thus, the pin 32 is simultaneously located inside the first hole 123 and the second hole 223 to prevent the first drill tube 10 from separating from the second drill tube 20. The retaining ring 33 has two spaced-apart stop portions 331, and each retaining ring 33 has a deformable deformable portion 332 between the two stop portions 331. The deformable portion 332 is located inside the retaining ring groove 124, while the two stop portions 331 are located inside the pin penetration channel T so as to contact the other end of the pin 32, so that the pin 32 is located between the limiting block 31 and the two stop portions 331.

[0023] Please refer to Figures 7A and 7B for a specific application of the excavation drilling mechanism 1. A drilling rig 40 excavates a foundation 50, forming a pile hole 51. Next, the excavation drilling mechanism 1 is placed inside the pile hole 51, with the first and second drill pipes 10 and 20 of the mechanism close to the hole wall. The first and second drill pipes 10 and 20 together stabilize the hole wall to prevent soil or rock collapse that could damage the drilling rig 40. The drilling rig 40 continues excavating the foundation. During the process of drilling rig 40, the first and second drill pipes 10 and 20 will vibrate. When the first and second drill pipes 10 and 20 are vibrating, the two stop portions 331 of the retaining ring 33 and the limiting block 31 respectively contact the opposite sides of the pin 32 to prevent the pin 32 from moving inside the pin passage T. This ensures that the pin 32 can be stably connected to the first drill pipe 10 and the second drill pipe 20 under the high-speed rotation of the drilling rig 40, thereby preventing the first drill pipe 10 from detaching from the second drill pipe 20.

[0024] Please refer to Figures 8 and 9. In the second preferred embodiment, the difference from the first preferred embodiment lies in the structural features of the limiting block 31 and the pin 32 of the connecting mechanism. The structural features of the first drill pipe 10 and the second drill pipe 20 are the same as in the first preferred embodiment. Therefore, in this embodiment, the structural features of the first and second drill pipes 10 and 20 will not be described again. As shown in the figures, the limiting block 31 forms a circular limiting through hole 311, and a portion of the pin 32 is a rod 321 with a profile smaller than the limiting through hole 311. The remaining part of the pin 32 is set as a head 322 with a profile larger than that of the limiting through hole 311, so that the profile of the head 322 is larger than that of the rod 321, and the rod 321 has a cylindrical appearance. When the pin 32 is inserted into the pin insertion channel T, the rod 321 can pass through the limiting through hole 311, while the head 322 cannot pass through the limiting through hole 311, so that the head 322 is located between the two stops 331 of the limiting block 31 and the buckle 33, and thus the opposite sides of the head 322 can be contacted by the limiting block 31 and the stops 331 respectively.

[0025] Please refer to Figures 10 and 11. In the third preferred embodiment, the difference from the second preferred embodiment lies in the appearance of both the limiting through hole 311 of the limiting block 31 and the rod body 321 of the pin 32. As shown in the figures, the limiting through hole 311 has a through hole 312 in the central region of the limiting block 31 and an alignment hole 313 around the through hole 312. The through hole 312 is circular, while the alignment hole 313 is fan-shaped. The rod body 321 has a cylindrical body 32. 1a and a aligning block portion 321b extending from the body portion 321a. The aligning block portion 321b has a fan-shaped appearance. The pin 32 is inserted into the pin insertion channel T. The body portion 321a passes through the insertion hole portion 312, and the aligning block portion 321b passes through the alignment hole portion 313. When the aligning block portion 321b passes through the alignment hole portion 313, the pin 32 can rotate relative to the limiting block 31, so that the aligning block portion 321b moves away from the alignment hole portion 313 and is adjacent to the limiting block 31.

[0026] Please refer to Figures 12 and 13. In the fourth preferred embodiment, the difference from the third preferred embodiment is the position of the limiting block 31. The limiting block 31 extends from the first drill pipe 10 to the inside of the first hole 123 of the first drill pipe 10, so that the inside of the first hole 123 is provided with a buckle groove 124 and the limiting block 31. The way the pin 32 is inserted into the pin insertion channel T is the same as in the third preferred embodiment.

[0027] The embodiments described above are only for the purpose of illustrating the present invention and are not intended to limit it. Various simple modifications and variations without departing from the invention should still be included in the following patent application scope.

[0028] 1: Excavation and drilling mechanism 10: First Drill Casing 11:First tube body 111: First Department 112: First connecting ring 113: First Connecting Space 113a: First Inner Region 113b: First Outer Region 12: First connecting sleeve 121: First shaft section 122: First Round 123: First hole 124: Buckle groove 20: Second Drill Pipe 21:Second tube body 211: Second Department 212: Second connecting ring 213: Second Connecting Space 213a: Second Inner Region 213b: Second outer region 22: Second connecting sleeve 221: Second shaft section 222: Second Round 223: Second hole 30: Connecting device 31: Limiting block 311: Limiting through hole 312: Through-hole section 313: Alignment Hole Section 32: Pin 321: Rod 321a: Body 321b: Alignment Block 322: Head and Body 33: Buckle 331: Stop section 332: Deformation section 40: Drilling machine 50: Foundation 51: Pile Hole T: Pin insertion channel 60: Familiar Excavation Drilling Mechanism 61: Drill pipe 62: Pin 63: Pile Hole 64: Foundation

Claims

1. A drilling mechanism, comprising: a first drill pipe having a first hole, the interior of which has a retaining ring groove; a second drill pipe having a second hole, the second drill pipe being connected to the first drill pipe such that the first hole aligns with the second hole to form a pin insertion channel; a limiting block formed inside the pin insertion channel and spaced apart from the retaining ring groove; a pin inserted into the pin insertion channel such that the pin is simultaneously located inside both the first hole and the second hole to prevent the first drill pipe from separating from the second drill pipe; and a retaining ring disposed in the retaining ring groove and spaced apart from the limiting block, having a deformable portion located inside the retaining ring groove and a stop portion located inside the pin insertion channel; wherein... The aforementioned stop and the limiting block respectively contact different sides of the aforementioned pin, so that the aforementioned stop and the limiting block can jointly prevent the aforementioned pin from separating from the aforementioned pin insertion channel.

2. The excavation drilling mechanism as described in claim 1, wherein, The aforementioned limiting block is located inside the aforementioned second hole and contacts one end of the aforementioned pin, while the aforementioned stop portion contacts the other opposite end of the aforementioned pin, such that the aforementioned pin is located between the aforementioned limiting block and the stop portion.

3. The excavation drilling mechanism as described in claim 1, wherein, The aforementioned limiting block is located inside the aforementioned first hole and the aforementioned second hole, and forms a limiting through hole through it. The aforementioned pin is provided with a rod that can pass through the aforementioned limiting through hole and a head with a profile larger than the aforementioned rod. The aforementioned head is located between the aforementioned limiting block and the stop portion, so that the opposite sides of the aforementioned head can be contacted by the aforementioned limiting block and the stop portion respectively.

4. The excavation drilling mechanism as described in claim 3, wherein, The aforementioned limiting through hole has a through hole in the central region of the aforementioned limiting block and an alignment hole around the through hole. The aforementioned rod has a body that can pass through the through hole and an alignment block extending from the body. The alignment block can pass through the alignment hole simultaneously with the body. When the alignment block passes through the alignment hole, the aforementioned pin rotates relative to the aforementioned limiting block, causing the alignment block to move away from the alignment hole and become adjacent to the aforementioned limiting block.

5. The excavation drilling mechanism as described in claim 1, wherein, The first drill pipe has a first tube body and a plurality of first connecting sleeves. The first tube body forms a plurality of first connecting spaces, and each of the first connecting spaces is used to accommodate one of the first connecting sleeves. Each of the first connecting sleeves forms the first hole and a retaining ring groove. The second drill pipe has a second tube body and a plurality of second connecting sleeves. The second tube body forms a plurality of second connecting spaces to accommodate one of the second connecting sleeves in a one-to-one manner. Each of the second connecting sleeves forms the second hole.

6. The excavation drilling mechanism as described in claim 5, wherein, The first tube has a first connecting ring portion forming the first connecting space and a first tube portion with a thickness greater than the first connecting ring portion. The first connecting ring portion is formed on the outer edge of the first tube portion. The second tube has a second connecting ring portion forming the second connecting space and a second tube portion with a thickness greater than the second connecting ring portion. The second connecting ring portion is formed on the inner edge of the second tube portion. When the first drill pipe is connected to the second drill pipe, the first connecting ring portion is located on the outer edge of the second connecting ring portion, and the thickness formed by the first connecting ring portion and the second connecting ring portion together is equal to the thickness of the first tube portion and the thickness of the second tube portion.

7. The excavation drilling mechanism as described in claim 5, wherein, The first connecting sleeve has a first shaft portion and a first wheel portion with a profile larger than the first shaft portion. The first connecting space has a first inner region near the inner edge of the first tube and a first outer region near the outer edge of the first tube. The profile of the first inner region is smaller than that of the first outer region and is used to accommodate the first shaft portion. The first wheel portion is welded to the first outer region, such that the first wheel portion is located inside the first outer region. The second connecting sleeve has a second shaft portion and a second wheel portion with a profile larger than the second shaft portion. The second connecting space has a second inner region near the inner edge of the second tube and a second outer region near the outer edge of the second tube. The profile of the second inner region is larger than that of the second outer region and is used to accommodate the second wheel portion. The second shaft portion is welded to the second outer region, such that the second shaft portion is located inside the second outer region.

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