Drill rod structure of horizontal directional drilling machine

Abstract

The utility model provides a horizontal directional drilling machine drill rod structure, which relates to the technical field of drilling machine drill rods, and comprises a drill rod body, the front end face of the drill rod body is fixedly connected with a sleeve, the front end face of the sleeve is fixedly connected with a plurality of fixing rods at equal intervals, and the rear end face of the drill rod body is provided with a butt joint groove. An inner cylinder is fixedly connected to the inner surface of the butt joint groove, a ring block is arranged on the outer surface of the inner cylinder, and a plurality of limiting holes are formed in the rear end face of the ring block at equal intervals. During use, the outer surface of the sleeve is in threaded connection with the ring block, and the ring block is located between the butt joint groove and the inner cylinder and is tightly attached to the inner surface of the butt joint groove, so that the sealing protection effect is achieved, sludge in a construction site can be prevented from entering the butt joint annular groove and being hardened, and the follow-up butt joint effect is prevented from being affected; and the butt joint effect of the drill rods is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling rig drill rods, in particular to a horizontal directional drilling rig drill rod structure. Background Art

[0002] Horizontal directional drilling crossing construction is driven by the drilling rig to rotate the drill pipe, provide tension and torque, mud is injected through the drill pipe, the entire drill string rotates, and the front end of the reamer is subjected to tension and torque.

[0003] Horizontal directional drilling crossing construction is driven by the drilling rig to rotate the drill pipe, provide tension and torque, mud is injected through the drill pipe, the entire drill string rotates, and the front end of the reamer is subjected to tension and torque.

[0004] In the prior art, such as Chinese patent CN220101210U, a drill rod structure for a horizontal directional drilling rig includes a drill rod body, an inner cylinder is arranged inside the drill rod body, a sleeve is fixedly connected to the left end of the drill rod body, a circular arc surface is arranged at the left end of the sleeve, an outer bevel is arranged on the outer side of the sleeve, a slot is provided at the right end of the drill rod body, a through slot is provided on the outer side of the slot, an inner bevel is provided at the opening of the slot, a threaded cylinder is fixedly connected to the left end of the inner cylinder, and a threaded groove is provided at the right end of the inner cylinder; a sleeve is arranged on the outer side of the threaded connection structure for covering, and the sleeve is plugged and combined with the adjacent drill rod during the connection process, a guide structure is formed during the assembly process to prevent lateral deviation during the threaded connection process, and a through slot structure is arranged on the outer side of the slot to remove impurities and stains in the slot during the insertion of the sleeve to prevent stains from getting stuck in the joint.

[0005] In the above patent, during the process of connecting two drill rods, the sleeve is inserted into the slot, and after the threaded barrel contacts the threaded groove, one of the drill rods is rotated to perform threaded fixing. During the combined connection process, the impurities in the sleeve and the slot are squeezed out from the through groove under the action of the outer inclined surface, which has a good docking effect. However, if the sludge impurities in the slot are hardened and tightly attached to the through groove, it is difficult for the drill rod to squeeze out the hardened sludge impurities, affecting the docking effect of the drill rod. Utility Model Content

[0006] The utility model aims to solve the problem in the prior art that if the sludge impurities in the slots are hardened and tightly attached to the through grooves, it is difficult for the drill rod to squeeze out the hardened sludge impurities, which affects the docking effect of the drill rod, and proposes a drill rod structure for a horizontal directional drilling rig.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a drill rod structure of a horizontal directional drilling rig, comprising: a drill rod body, the front end face of the drill rod body is fixedly connected to a sleeve, the front end face of the sleeve is equidistantly fixedly connected to a plurality of fixing rods, the rear end face of the drill rod body is provided with a docking groove, the inner surface of the docking groove is fixedly connected to an inner tube, the outer surface of the inner tube is provided with a ring block, and the rear end face of the ring block is equidistantly provided with a plurality of limit holes.

[0008] Preferably, the inner surface of the sleeve is provided with a first internal thread, the outer surface of the inner cylinder is provided with an external thread, and the first internal thread matches the external thread.

[0009] Preferably, the inner surface of the ring block is provided with a second internal thread, and the second internal thread matches the external thread.

[0010] Preferably, the first internal thread and the second internal thread are both female threads, and the external thread is a male thread.

[0011] Preferably, the outer diameter of the ring block is equal to the inner diameter of the docking groove, and the outer diameter of the sleeve is equal to the inner diameter of the docking groove.

[0012] Preferably, the drill rod body is hollow, the sleeve is connected to the drill rod body, and the inner tube is connected to the drill rod body.

[0013] Preferably, the number of the fixing rods is the same as the number of the limiting holes, and the diameter of the fixing rods is equal to the diameter of the limiting holes.

[0014] Compared with the prior art, the advantages and positive effects of the utility model are:

[0015] 1. In the utility model, when in use, a ring block is threadedly connected to the outer surface of the sleeve, the ring block is located between the docking groove and the inner tube, and is tightly fitted with the inner surface of the docking groove, which plays a role of sealing protection, and can prevent sludge in the construction site from entering the docking annular groove, hardening and affecting the subsequent docking effect, thereby improving the docking effect of the drill rod.

[0016] 2. In the utility model, when in use, the inner surface of the sleeve rotates along the inner surface of the inner tube, and its outer surface fits with the inner surface of the docking groove, playing a guiding role to prevent the position from shifting during the docking process. The ring block and the sleeve have the same diameter, and the outer surfaces are tightly fitted with the inner surface of the docking groove, so that after the two drill pipe bodies are docked, they play a sealing role to prevent sludge and impurities from entering the connection gap, and the utility model is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a drill rod structure of a horizontal directional drilling rig is proposed for the utility model;

[0018] Figure 2 A rear view of a drill rod structure of a horizontal directional drilling rig is proposed for the utility model;

[0019] Figure 3 A schematic diagram of the inner tube structure of a drill rod structure of a horizontal directional drilling rig is proposed for the utility model;

[0020] Figure 4 The utility model provides a schematic diagram of a ring block structure of a drill rod structure of a horizontal directional drilling rig.

[0021] Legend: 1. Drill pipe body; 2. Sleeve; 3. Fixed rod; 4. First internal thread; 5. Inner tube; 6. External thread; 7. Ring block; 8. Second internal thread; 9. Limit hole; 10. Docking groove. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a drill pipe structure of a horizontal directional drilling rig, comprising: a drill pipe body 1, a sleeve 2 is fixedly connected to the front end face of the drill pipe body 1, a plurality of fixed rods 3 are equidistantly fixedly connected to the front end face of the sleeve 2, a docking groove 10 is provided on the rear end face of the drill pipe body 1, an inner cylinder 5 is fixedly connected to the inner surface of the docking groove 10, a ring block 7 is provided on the outer surface of the inner cylinder 5, and a plurality of limit holes 9 are equidistantly provided on the rear end face of the ring block 7. A first internal thread 4 is provided on the inner surface of the sleeve 2, an external thread 6 is provided on the outer surface of the inner cylinder 5, and the first internal thread 4 matches the external thread 6. A second internal thread 8 is provided on the inner surface of the ring block 7, and the second internal thread 8 matches the external thread 6. Both the first internal thread 4 and the second internal thread 8 are female threads, and the external thread 6 is a male thread. The drill pipe body 1 is hollow, the sleeve 2 is connected to the drill pipe body 1, and the inner cylinder 5 is connected to the drill pipe body 1. The number of the fixing rods 3 is the same as the number of the limiting holes 9 , and the diameter of the fixing rods 3 is equal to the diameter of the limiting holes 9 .

[0025] The effect achieved by the entire embodiment 1 is that when two drill rod bodies 1 are butted against each other, the sleeve 2 on the front surface of one of the drill rod bodies 1 is correspondingly inserted into the butt groove 10 on the rear inner side of the adjacent drill rod body 1, and the plurality of fixing rods 3 are correspondingly inserted into the plurality of limiting holes 9, the thickness of the ring block 7 is greater than the length of the fixing rod 3, and the length of the fixing rod 3 is the same as the depth of the limiting hole 9, which plays a limiting role, and then the drill rod is rotated, and the ring block 7 is driven by the plurality of fixing rods 3 to rotate on the surface of the external thread 6 on the outer side of the inner tube 5 through the second internal thread 8 on the inner side thereof, so that the drill rod 1 is not rotated. It moves along the surface of the inner tube 5 toward the inside of the docking groove 10, and at the same time, the inner surface of the sleeve 2 is threadedly rotated on the outer surface of the outer thread 6 through the first internal thread 4 until the ring block 7 contacts the deep part of the docking groove 10, which plays a role in docking and fixing. The ring block 7 is threadedly connected to the outer surface of the sleeve 2, and the ring block 7 is located between the docking groove 10 and the inner tube 5, and fits tightly with the inner surface of the docking groove 10, which plays a role in sealing and protection, and can prevent sludge in the construction site from entering the docking annular groove, hardening, and affecting the subsequent docking effect, thereby improving the docking effect of the drill rod.

[0026] Embodiment 2, as Figure 1-Figure 4 As shown, the outer diameter of the ring block 7 is equal to the inner diameter of the docking groove 10 , and the outer diameter of the sleeve 2 is equal to the inner diameter of the docking groove 10 .

[0027] The effect achieved by the entire embodiment 2 is that, when in use, the inner surface of the sleeve 2 rotates along the inner surface of the inner tube 5, and its outer surface fits with the inner surface of the docking groove 10, playing a guiding role to prevent the position from shifting during the docking process. The ring block 7 has the same diameter as the sleeve 2, and the outer surface is tightly fitted with the inner surface of the docking groove 10, so that after the two drill pipe bodies 1 are docked, they play a sealing role to prevent sludge and impurities from entering the connection gap, and the practicality is high.

[0028] Working principle: When two drill rod bodies 1 are butted against each other, the sleeve 2 on the front surface of one of the drill rod bodies 1 is correspondingly inserted into the inner butt joint groove 10 on the rear inner side of the adjacent drill rod body 1, and the plurality of fixing rods 3 are correspondingly inserted into the plurality of limiting holes 9 first. The thickness of the ring block 7 is greater than the length of the fixing rod 3, and the length of the fixing rod 3 is the same as the depth of the limiting hole 9, which plays a limiting role. Then, the drill rod is rotated, and the ring block 7 is driven by the plurality of fixing rods 3 to rotate on the surface of the external thread 6 on the outer side of the inner tube 5 through the second internal thread 8 on the inner side thereof, so that it moves along the surface of the inner tube 5 toward the inside of the butt joint groove 10. At the same time, the inner surface of the sleeve 2 is threadedly rotated on the outer surface of the external thread 6 through the first internal thread 4 until the ring block 7 contacts the deep part of the butt joint groove 10, which plays a role. The role of docking and fixing is that a ring block 7 is threadedly connected to the outer surface of the sleeve 2. The ring block 7 is located between the docking groove 10 and the inner tube 5 and fits tightly with the inner surface of the docking groove 10, which plays a role of sealing protection. It can prevent sludge in the construction site from entering the docking annular groove and hardening, which will affect the subsequent docking effect, thereby improving the docking effect of the drill pipe. The inner surface of the sleeve 2 rotates along the inner surface of the inner tube 5, and its outer surface fits with the inner surface of the docking groove 10, which plays a guiding role and prevents the position from shifting during the docking process. The ring block 7 has the same diameter as the sleeve 2, and the outer surfaces are tightly fitted with the inner surface of the docking groove 10, so that after the two drill pipe bodies 1 are docked, they play a sealing role to prevent sludge and impurities from entering the connection gap, which is highly practical.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A drill rod structure for a horizontal directional drilling rig, characterized in that: include: A drill rod body (1), wherein the front end face of the drill rod body (1) is fixedly connected to a sleeve (2), the front end face of the sleeve (2) is equidistantly fixedly connected to a plurality of fixing rods (3), the rear end face of the drill rod body (1) is provided with a docking groove (10), the inner surface of the docking groove (10) is fixedly connected to an inner tube (5), the outer surface of the inner tube (5) is provided with a ring block (7), and the rear end face of the ring block (7) is equidistantly provided with a plurality of limiting holes (9).

2. The drill rod structure of a horizontal directional drilling rig according to claim 1, characterized in that: The inner surface of the sleeve (2) is provided with a first internal thread (4), and the outer surface of the inner tube (5) is provided with an external thread (6), and the first internal thread (4) matches the external thread (6).

3. The drill rod structure of the horizontal directional drilling rig according to claim 2, characterized in that: The inner surface of the ring block (7) is provided with a second internal thread (8), and the second internal thread (8) matches the external thread (6).

4. The drill rod structure of the horizontal directional drilling rig according to claim 3, characterized in that: The first internal thread (4) and the second internal thread (8) are both female threads, and the external thread (6) is a male thread.

5. The drill rod structure of the horizontal directional drilling rig according to claim 3, characterized in that: The outer diameter of the ring block (7) is equal to the inner diameter of the docking groove (10), and the outer diameter of the sleeve (2) is equal to the inner diameter of the docking groove (10).

6. The drill rod structure of a horizontal directional drilling rig according to claim 1, characterized in that: The drill rod body (1) is hollow, the sleeve (2) is connected to the drill rod body (1), and the inner tube (5) is connected to the drill rod body (1).

7. The drill rod structure of a horizontal directional drilling rig according to claim 1, characterized in that: The number of the fixing rods (3) is the same as the number of the limiting holes (9), and the diameter of the fixing rods (3) is equal to the diameter of the limiting holes (9).

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