Reducing joint for drill rod

Abstract

The utility model discloses a reducing joint for a drill rod, which relates to the technical field of reducing joints for drill rods and comprises a joint rod, a threaded joint is arranged at the upper end of the joint rod, a threaded groove is arranged on the inner side of the lower end of the joint rod, and an upper bolt hole is arranged at the upper end of the joint rod. Through the arrangement of the upper bolt hole, the lower bolt hole and the connecting bolt, drill rods with different diameters are connected to the threaded connector and the threaded groove respectively, after the drill rods are rotated in place, the bolt holes in the drill rods are accurately aligned with the upper bolt hole and the lower bolt hole, then the connecting bolt penetrates into the upper bolt hole and the lower bolt hole, and the drill rods are connected with the threaded connector and the threaded groove. The drill rod and the connector rod are connected stably, looseness or too tight rotation between the drill rod and the connector rod due to rotation operation is avoided, the connection stability of the drill rod and the reducer union is guaranteed, and then the operation safety of the drill rod is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of reducing joints for drill pipes, specifically reducing joints used for drill pipes. Background Technology

[0002] During drilling, reducer joints are needed to connect drill rods of different diameters, allowing them to rotate synchronously and complete the drilling and mining operations. The reducer joints transmit power and torque from the upper drill rod to the lower drill rod, ensuring smooth drilling operations.

[0003] When using existing reducing couplings, the coupling is connected to the drill pipe via threads. During the rotation of the drill pipe, the drill bit and the reducing coupling are prone to loosening or excessive tightening, which makes it impossible to guarantee the connection stability between the drill pipe and the reducing coupling, thus affecting the safety of the drill pipe operation. Utility Model Content

[0004] The technical problem this utility model aims to solve is to overcome existing defects and provide a reducing joint for drill rods. Through the provided upper bolt hole, lower bolt hole, and connecting bolt, drill rods of different diameters are connected to the threaded joint and threaded groove respectively. After the drill rod is rotated into position, the bolt holes on the drill rod are precisely aligned with the upper and lower bolt holes. Then, the connecting bolt is inserted into the upper and lower bolt holes, ensuring a stable connection between the drill rod and the joint rod. This prevents loosening or excessive tightness between the drill rod and the joint rod due to rotation, ensuring the stability of the connection between the drill rod and the reducing joint, and thus guaranteeing the safety of drill rod operation. This effectively solves the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reducing connector for drill pipes, comprising a connector rod, wherein a threaded connector is provided at the upper end of the connector rod, a threaded groove is provided on the inner side of the lower end of the connector rod, an upper bolt hole is provided at the upper end of the connector rod, a lower bolt hole is provided at the lower end of the connector rod, and a connecting bolt is provided in both the upper bolt hole and the lower bolt hole.

[0006] The connector rod has symmetrically arranged wrench slots on its outer side, and coolant holes are arranged vertically on its inner side.

[0007] The connecting bolts are threaded to both the upper bolt hole and the lower bolt hole, and the threaded joint and the joint rod are an integral structure.

[0008] One end of the connecting bolt is provided with an internal hexagonal groove, and the threaded joint has a frustum-shaped structure.

[0009] The connector rod and the rough drill rod are connected by the threaded connector, the connecting bolt, and the upper bolt hole.

[0010] The connector rod and the fine drill rod are connected through the threaded groove, the connecting bolt, and the lower bolt hole.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the provision of upper bolt holes, lower bolt holes, and connecting bolts, allows drill rods of different diameters to be connected to threaded joints and threaded grooves respectively. After the drill rod is rotated into position, the bolt holes on the drill rod are precisely aligned with the upper and lower bolt holes. Then, the connecting bolts are inserted into the upper and lower bolt holes, ensuring a stable connection between the drill rod and the joint rod. This prevents loosening or excessive tightness between the drill rod and the joint rod due to rotation, ensuring the stability of the connection between the drill rod and the reducing joint, and thus guaranteeing the safety of the drill rod operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0015] Figure 3 This utility model Figure 1 A side view of the connecting bolts.

[0016] In the diagram: 1. Connector rod; 2. Wrench slot; 3. Threaded connector; 4. Connecting bolt; 5. Lower bolt hole; 6. Threaded groove; 7. Coolant hole; 8. Upper bolt hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3 This embodiment provides a technical solution: a reducing connector for drill pipe, including a connector rod 1, a threaded connector 3 at the upper end of the connector rod 1, a threaded groove 6 on the inner side of the lower end of the connector rod 1, an upper bolt hole 8 at the upper end of the connector rod 1, a lower bolt hole 5 at the lower end of the connector rod 1, and connecting bolts 4 are provided in both the upper bolt hole 8 and the lower bolt hole 5.

[0019] like Figure 1-3As shown, when connecting the drill rod, the coarse drill rod is connected to the threaded connector 3. The coarse drill rod is rotated and tightened into place along the threaded connector 3, so that the bolt hole on the coarse drill rod is precisely positioned with the upper bolt hole 8. Then, the connecting bolt 4 is tightened into the upper bolt hole 8, so that the coarse drill rod and the threaded connector 3 are stably connected. This prevents the coarse drill rod from becoming loose or over-tightened due to the rotation of the connector rod 1, and facilitates the disassembly and replacement of the drill rod. Similarly, the fine drill rod is connected to the connector rod 1 through the threaded groove 6. After the fine drill rod is rotated into place, the bolt hole on the fine drill rod is precisely aligned with the lower bolt hole 6. The connecting bolt 4 is rotated and tightened into the lower bolt hole 5, so that the connector rod 1 is stably connected to the coarse and fine drill rods. This can prevent the coarse or fine drill rod from being over-tightened or loosened during rotation, and ensure the connection stability between the drill rod and the connector rod 1.

[0020] The connector rod 1 has symmetrically arranged wrench slots 2 on its outer side, and coolant holes 7 are arranged vertically on its inner side.

[0021] The connecting bolt 4 is connected to both the upper bolt hole 8 and the lower bolt hole 5 by threads, and the threaded connector 3 and the connector rod 1 are an integral structure.

[0022] One end of the connecting bolt 4 is provided with an internal hexagonal groove, and the threaded connector 3 has a frustum-shaped structure.

[0023] The connector rod 1 is connected to the coarse drill rod through the threaded connector 3, the connecting bolt 4, and the upper bolt hole 8.

[0024] The connector rod 1 is connected to the fine drill rod through the threaded groove 6, the connecting bolt 4, and the lower bolt hole 5.

[0025] The working principle of the reducing joint for drill pipe provided by this utility model is as follows: Figures 1-3 As shown, when connecting the drill rod, the coarse drill rod is connected to the threaded connector 3. The coarse drill rod is rotated and tightened into place along the threaded connector 3, so that the bolt hole on the coarse drill rod is precisely positioned with the upper bolt hole 8. Then, the connecting bolt 4 is tightened into the upper bolt hole 8, so that the coarse drill rod and the threaded connector 3 are stably connected. This prevents the coarse drill rod from becoming loose or over-tightened due to the rotation of the connector rod 1, and facilitates the disassembly and replacement of the drill rod. Similarly, the fine drill rod is connected to the connector rod 1 through the threaded groove 6. After the fine drill rod is rotated into place, the bolt hole on the fine drill rod is precisely aligned with the lower bolt hole 6. The connecting bolt 4 is rotated and tightened into the lower bolt hole 5, so that the connector rod 1 is stably connected to the coarse and fine drill rods. This can prevent the coarse or fine drill rod from being over-tightened or loosened during rotation, and ensure the connection stability between the drill rod and the connector rod 1.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A reducing joint for drill pipes, comprising a joint rod (1), characterized in that: The upper end of the connector rod (1) is provided with a threaded connector (3), the inner side of the lower end of the connector rod (1) is provided with a threaded groove (6), the upper end of the connector rod (1) is provided with an upper bolt hole (8), the lower end of the connector rod (1) is provided with a lower bolt hole (5), and a connecting bolt (4) is provided in both the upper bolt hole (8) and the lower bolt hole (5).

2. The reducing joint for drill pipe according to claim 1, characterized in that: The connector rod (1) is symmetrically provided with wrench slots (2) on the outside, and a coolant hole (7) is vertically provided on the inside of the connector rod (1).

3. The reducing joint for drill pipe according to claim 1, characterized in that: The connecting bolt (4) is connected to the upper bolt hole (8) and the lower bolt hole (5) by threads, and the threaded joint (3) and the joint rod (1) are an integral structure.

4. The reducing joint for drill pipe according to claim 1, characterized in that: One end of the connecting bolt (4) is provided with an internal hexagonal groove, and the threaded joint (3) has a frustum-shaped structure.

5. The reducing joint for drill pipe according to claim 1, characterized in that: The connector rod (1) is connected to the rough drill rod through the threaded connector (3), the connecting bolt (4), and the upper bolt hole (8).

6. The reducing joint for drill pipe according to claim 1, characterized in that: The connector rod (1) is connected to the fine drill rod through the threaded groove (6), the connecting bolt (4), and the lower bolt hole (5).

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