Novel horizontal directional drilling bit

Abstract

The utility model relates to the technical field of engineering machinery, in particular to a novel horizontal directional drill bit which mainly comprises a drill rod body, the bottom end of the drill rod body is connected with a drill bit connecting end, the top end of the drill rod body is provided with a fixed connecting end, and a bottom drilling assembly is arranged at the bottom end of the outer side of the drill rod body. The top end of the bottom drilling assembly is connected with the middle drilling assembly, the top end of the middle drilling assembly is connected with the top end drilling assembly, the top end of the top end drilling assembly is connected with the pipe connecting pile casing, and the fixed connecting assembly penetrates through the interior of the fixed connecting end. According to the novel horizontal directional drilling bit, through common connection of the bottom drilling assembly, the middle drilling assembly and the top end drilling assembly, when the drilling bit and a dragging pipe are dragged back, rotation can be conducted, stones are smashed and pushed, the success probability that the drill increases back-supporting pipes in uncertain geology or mountains is increased, and the drilling efficiency is improved. And the fixed connecting assembly and the reinforcing assembly are matched for use, reinforcing is conducted after connection, and the connecting stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a novel horizontal directional drilling bit. Background Art

[0002] Horizontal directional drilling (HDD) has revolutionized the traditional construction method, which disrupted the lives of surrounding residents and damaged the environment, traffic, and surrounding building foundations, thanks to its advantages of rapid construction speed, high precision, low cost, and minimal impact on surrounding traffic, the environment, and residents' daily lives. Horizontal directional drilling (HDD) is now increasingly widely used in urban underground infrastructure construction (including the laying of pipelines for water, electricity, telecommunications, natural gas, and coal gas). The HDD drill bit, an essential reaming tool in HDD construction, plays a key role in the final hole quality, efficiency, and cost of the construction process.

[0003] In trenchless pipe laying construction, if isolated rocks, caves, piles of large pebbles, miscellaneous fills, etc. are encountered, it is difficult for the geological report to make an accurate geological description. In complex geology, two situations may occur: one is that the horizontal directional drilling construction may fail, and the other is that the guidance is basically normal, there is resistance to hole expansion, but it can also pass through various levels of hole expansion. Although the mud wall is protected, there is still the possibility of debris or collapsed blocks in the hole, which may lead to failure of pipe pulling and the horizontal directional drilling drill bit cannot be pulled back. This needs to be optimized and improved. Utility Model Content

[0004] The purpose of the utility model is to provide a novel horizontal directional drilling bit to solve the problems raised by the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A new type of horizontal directional drilling bit, comprising:

[0007] A drill rod body, wherein the bottom end of the drill rod body is connected to the drill bit connection end, and the top end of the drill rod body is provided with a fixed connection end;

[0008] The bottom drilling assembly is arranged at the outer bottom end of the drill pipe body, the top end of the bottom drilling assembly is connected to the middle drilling assembly, the top end of the middle drilling assembly is connected to the top drilling assembly, and the top end of the top drilling assembly is connected to the pipe casing;

[0009] A fixed connection component is provided, wherein the fixed connection component runs through the interior of the fixed connection end, a reinforcement component is provided inside the fixed connection component, and the outer top end of the fixed connection component is connected to the casing connection component.

[0010] Preferably, a bottom drilling assembly is provided at the outer bottom end of the drill rod body, and the bottom drilling assembly includes a bottom connecting block, the bottom connecting block is provided at the outer bottom end of the drill rod body, and a gear shaft 1 is provided inside the bottom connecting block.

[0011] Preferably, a middle drilling assembly is provided at the top of the bottom connecting block, and the middle drilling assembly includes a diamond drill block, the diamond drill block is welded to the top of the bottom connecting block, and broken teeth are welded on the outer wall of the diamond drill block.

[0012] Preferably, the top end of the diamond drill block is connected to a top drilling assembly, and the top drilling assembly includes a push plate, the push plate is connected to the top end of the diamond drill block, and a second gear shaft is provided on the inner side of the push plate.

[0013] Preferably, a fixed connection component is passed through the interior of the fixed connection end, and the fixed connection component includes a connecting rod, the connecting rod passes through the interior of the fixed connection end, and a fixing nut is provided on the left side of the exterior of the connecting rod, and a through hole is opened on the left side of the interior of the connecting rod.

[0014] Preferably, the top end of the push plate is connected to a pipe casing, and a casing connecting assembly is provided on the inner side of the pipe casing.

[0015] Preferably, the casing connection assembly includes a fixing plate connected to the middle portion of the inner wall of the pipe casing, and the bottom end of the fixing plate is connected to a butt joint.

[0016] Preferably, the interior of the connecting rod is connected to a reinforcement component, and the reinforcement component includes a steel cable, the steel cable passes through the interior of the through hole, and the rear end of the steel cable is connected to a threaded end, and a reinforcement nut is provided on the outside of the threaded end.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model can rotate the drill bit and the tube when they are pulled back by connecting the bottom drilling assembly, the middle drilling assembly and the top drilling assembly, thereby crushing and pushing stones, and improving the probability of successfully returning the tube when drilling in uncertain geological conditions or mountains.

[0019] By using the fixed connection component and the reinforcement component in conjunction with each other, the connection can be reinforced after use to improve the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the utility model;

[0022] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;

[0023] Figure 4 It is a schematic diagram of the partial connection three-dimensional structure of the connecting component and the reinforcing component of the present invention.

[0024] In the figure: 1. Drill pipe body; 2. Drill bit connecting end; 3. Bottom drilling assembly; 301. Bottom connecting block; 302. Gear shaft 1; 4. Middle drilling assembly; 401. Diamond drill block; 402. Broken teeth; 5. Top drilling assembly; 501. Push plate; 502. Gear shaft 2; 6. Casing; 7. Fixed connecting end; 8. Fixed connecting assembly; 801. Connecting rod; 802. Fixing nut; 803. Through hole; 9. Casing connecting assembly; 901. Fixing plate; 902. Butt joint; 10. Reinforcement assembly; 1001. Steel cable; 1002. Threaded end; 1003. Reinforcement nut. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0027] Example 1:

[0028] See also Figure 1-4 , the utility model provides a technical solution: a new type of horizontal directional drilling bit, comprising;

[0029] A drill rod body 1, the bottom end of the drill rod body 1 is connected to a drill bit connection end 2, and the top end of the drill rod body 1 is provided with a fixed connection end 7;

[0030] The bottom drilling assembly 3 is arranged at the outer bottom end of the drill pipe body 1. The top of the bottom drilling assembly 3 is connected to the middle drilling assembly 4. The top of the middle drilling assembly 4 is connected to the top drilling assembly 5. The top of the top drilling assembly 5 is connected to the pipe casing 6.

[0031] A fixed connection component 8 is provided, which is inserted into the fixed connection end 7. A reinforcement component 10 is provided inside the fixed connection component 8. A casing connection component 9 is connected to the outer top of the fixed connection component 8.

[0032] By connecting the bottom drilling assembly 3, the middle drilling assembly 4 and the top drilling assembly 5 together, the drill bit and the drag tube can be rotated when being dragged back, crushing and pushing stones, thereby increasing the probability of successfully returning the tube in uncertain geology or mountains. The inner side can be connected and reinforced after use through the coordinated use of the fixed connection assembly 8 and the reinforcement assembly 10 to improve the stability of the connection.

[0033] Example 2:

[0034] like Figure 1-3 As shown, a novel horizontal directional drilling drill bit disclosed in Example 2 of the present invention has a structure that is basically the same as that in Example 1, except that a bottom drilling assembly 3 is provided at the outer bottom end of the drill pipe body 1, and the bottom drilling assembly 3 includes a bottom connecting block 301, which is provided at the outer bottom end of the drill pipe body 1, and a first gear shaft 302 is provided inside the bottom connecting block 301, and a middle drilling assembly 4 is provided at the top of the bottom connecting block 301, and the middle drilling assembly 4 includes a diamond drill block 401, which is welded to the top of the bottom connecting block 301, and a broken tooth 402 is welded to the outer wall of the diamond drill block 401, and a top drilling assembly 5 is connected to the top of the diamond drill block 401, and the top drilling assembly 5 includes a push plate 501, which is connected to the top of the diamond drill block 401, and a second gear shaft 502 is provided on the inner side of the push plate 501;

[0035] The connection between the bottom connecting block 301, the diamond drill block 401 and the push plate 501 is welded, and then connected to the drill pipe body 1 through the first gear shaft 302 and the second gear shaft 502, forming an integral drilling during horizontal drilling. After drilling is completed, the drag pipe connected to the rear end of the pipe casing 6 is dragged back. At this time, the crushing teeth 402 on the outer side of the diamond drill block 401 will crush the gravel after rotation, and the push plate 501 at the top will push larger stones when rotating, so that they are pushed to the rear of the pipe through rotation, reducing resistance and increasing the probability of successful pipe dragging.

[0036] Example 3:

[0037] like Figure 2 and Figure 4As shown, a novel horizontal directional drilling drill bit disclosed in Example 3 of the present invention has a structure that is basically the same as that in Example 2, except that a fixed connection assembly 8 is passed through the interior of the fixed connection end 7, and the fixed connection assembly 8 includes a connecting rod 801, which passes through the interior of the fixed connection end 7, and a fixing nut 802 is provided on the left side of the exterior of the connecting rod 801, and a through hole 803 is opened on the left side of the interior of the connecting rod 801, the top of the pushing plate 501 is connected to the pipe casing 6, and the inner side of the pipe casing 6 is provided with a casing connecting assembly 9, the casing connecting assembly 9 includes a fixing plate 901, the fixing plate 901 is connected to the middle part of the inner wall of the pipe casing 6, and the bottom end of the fixing plate 901 is connected to the docking joint 902;

[0038] The connecting rod 801 passes through the interior of the fixed connection end 7, and then the outside of the connecting rod 801 is connected to the docking joint 902. The fixing plate 901 at the top of the docking joint 902 is fixed to the inside of the pipe casing 6. This connection allows the pipe casing 6 and the push plate 501 to be fixed together, and then the fixing nut 802 is screwed on the outside of the connecting rod 801 to be fixed.

[0039] Example 4:

[0040] like Figure 4 As shown, a novel horizontal directional drilling drill bit disclosed in Example 3 of the present invention has a structure that is basically the same as that of Example 3, except that a reinforcing assembly 10 is connected to the interior of the connecting rod 801, and the reinforcing assembly 10 includes a steel cable 1001, which passes through the interior of the through hole 803, and a threaded end 1002 is connected to the rear end of the steel cable 1001, and a reinforcing nut 1003 is provided on the outside of the threaded end 1002;

[0041] After the external connection fixing nut 802 of the connecting rod 801 is fixed, in order to prevent slipping, a steel cable 1001 is passed through the inside of the through hole 803, and then fixed to the outside of the threaded end 1002 through the reinforcement nut 1003. At this time, the two ends of the steel cable 1001 are connected, and the sliding of the fixing nut 802 is restricted by the steel cable 1001, thereby improving the fastening effect.

[0042] The specific solution is as follows: the connecting rod 801 is passed through the interior of the fixed connecting end 7, and then the outer side of the connecting rod 801 is connected with a docking joint 902, and the fixing plate 901 at the top of the docking joint 902 is fixed to the inside of the pipe casing 6, so that the pipe casing 6 and the push plate 501 are fixed together, and then the fixing nut 802 is screwed on the outer side of the connecting rod 801 to be fixed, and the top of the pipe casing 6 is connected to the trustee, and the outer side of the connecting rod 801 is fixed with the fixing nut 802. In order to prevent it from slipping, the steel cable 1001 is passed through the inside of the through hole 803, and then fixed to the outer side of the threaded end 1002 by the reinforcing nut 1003. At this time, the two ends of the steel cable 1001 are connected Then, the sliding of the fixing nut 802 is limited by the steel cable 1001 to improve the fastening effect. Then, the connection between the bottom connecting block 301, the diamond drill block 401 and the push plate 501 is welded. Then, it is connected to the drill pipe body 1 through the gear shaft 1 302 and the gear shaft 2 502. During horizontal drilling, an integral drilling is formed. The drill bit connecting end 2 is connected to an adapted drill bit for drilling. After drilling is completed, the drag pipe connected to the rear end of the pipe casing 6 is dragged back. At this time, the crushing teeth 402 on the outside of the diamond drill block 401 will crush the gravel after rotation, and the push plate 501 at the top will push the larger stones when rotating, so that they are pushed to the rear of the pipe through rotation, reducing resistance and increasing the probability of successful pipe dragging.

[0043] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0044] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A new type of horizontal directional drilling bit, characterized in that: include: A drill rod body (1), wherein the bottom end of the drill rod body (1) is connected to a drill bit connection end (2), and the top end of the drill rod body (1) is provided with a fixed connection end (7); A bottom drilling assembly (3) is provided at the outer bottom end of the drill rod body (1); the top end of the bottom drilling assembly (3) is connected to a middle drilling assembly (4); the top end of the middle drilling assembly (4) is connected to a top drilling assembly (5); and the top end of the top drilling assembly (5) is connected to a pipe casing (6); A fixed connection component (8) is provided, the fixed connection component (8) is passed through the interior of the fixed connection end (7), a reinforcement component (10) is provided inside the fixed connection component (8), and a casing connection component (9) is connected to the outer top end of the fixed connection component (8).

2. A novel horizontal directional drilling bit according to claim 1, characterized in that: A bottom drilling assembly (3) is provided at the outer bottom end of the drill rod body (1), and the bottom drilling assembly (3) includes a bottom connecting block (301). The bottom connecting block (301) is provided at the outer bottom end of the drill rod body (1), and a gear shaft (302) is provided inside the bottom connecting block (301).

3. A novel horizontal directional drilling bit according to claim 2, characterized in that: A middle drilling assembly (4) is provided at the top of the bottom connecting block (301), and the middle drilling assembly (4) comprises a diamond drill block (401), the diamond drill block (401) is welded to the top of the bottom connecting block (301), and broken teeth (402) are welded on the outer wall of the diamond drill block (401).

4. A novel horizontal directional drilling bit according to claim 3, characterized in that: The top end of the diamond drill block (401) is connected to a top drilling assembly (5), and the top drilling assembly (5) includes a push plate (501), the push plate (501) is connected to the top end of the diamond drill block (401), and a second gear shaft (502) is provided on the inner side of the push plate (501).

5. A novel horizontal directional drilling bit according to claim 1, characterized in that: The interior of the fixed connection end (7) is penetrated by a fixed connection assembly (8), and the fixed connection assembly (8) includes a connecting rod (801), the connecting rod (801) is penetrated by the interior of the fixed connection end (7), and a fixing nut (802) is provided on the left side of the exterior of the connecting rod (801), and a through hole (803) is opened on the left side of the interior of the connecting rod (801).

6. A novel horizontal directional drilling bit according to claim 4, characterized in that: The top end of the push plate (501) is connected to a pipe casing (6), and a casing connecting assembly (9) is provided on the inner side of the pipe casing (6).

7. A novel horizontal directional drilling bit according to claim 6, characterized in that: The casing connection assembly (9) comprises a fixing plate (901), the fixing plate (901) is connected to the middle portion of the inner wall of the pipe casing (6), and the bottom end of the fixing plate (901) is connected to a docking joint (902).

8. A novel horizontal directional drilling bit according to claim 5, characterized in that: The interior of the connecting rod (801) is connected to a reinforcement assembly (10), and the reinforcement assembly (10) includes a steel cable (1001), the steel cable (1001) passes through the interior of the through hole (803), and the rear end of the steel cable (1001) is connected to a threaded end (1002), and the outside of the threaded end (1002) is provided with a reinforcement nut (1003).

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