Groove drilling rod

Abstract

The utility model relates to the technical field of mine coal mining, in particular to a grooving drill rod which solves the problems that in the prior art, due to the fact that polygonal matched insertion and key connection are low in connection strength, a drill rod is prone to falling off in the using process, and economic losses and potential safety hazards are caused. A grooving drill rod comprises a rod body, an external threaded rod and an internal threaded ring, the top of the external threaded rod is connected with a top column through a cylinder, the top column is connected to one end of the rod body, the internal threaded ring is connected to the other end of the rod body, and the edge of the top of the internal threaded ring is connected with a convex ring matched with the cylinder. By adopting the threaded connection design of the external threaded rod and the internal threaded ring, combining the close fit of the cylinder and the convex ring and the reinforced connection of the fixed screw rod, the connecting strength of the drill rod is obviously enhanced, the loosening or falling phenomenon caused by overlarge torsion in the use process is effectively prevented, and the service life of the drill rod is prolonged. And the safety and the reliability of drilling operation are improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, and in particular to a grooved drill rod. Background Technology

[0002] Grooved drill pipes, as an important tool, occupy a vital position in the mining and coal mining industry. As a core component in the drilling process, their quality and connection method have a decisive impact on the efficiency and safety of the entire drilling operation. Especially in the critical stage of deep mining, existing drill pipe equipment is gradually revealing significant limitations when dealing with deep hole drilling.

[0003] Chinese patent document CN208619059U discloses a twist drill rod. By employing a separate design for the double-helix drill rod body, insertion end, and storage end, and using a polygonal mating insertion and key connection, the drill rod does not reverse during rotation, solving the problem of the drill rod coming off during rotation. However, while this solution eliminates the use of threaded connections and solves the problem of rod coming off during rotation, it introduces new challenges: the polygonal mating insertion and key connection have relatively low connection strength, making the drill rod prone to falling off during use, causing unnecessary economic losses and safety hazards.

[0004] Therefore, to address the shortcomings of existing technologies, we urgently need a slotted drill pipe to solve this problem. This slotted drill pipe should significantly improve drilling efficiency and quality, while better meeting the needs of deep mining, providing strong support for the sustainable development of the coal mining industry. Utility Model Content

[0005] The purpose of this utility model is to provide a grooved drill rod that solves the problem of eliminating the use of threaded connections. While solving the problem of drill rod slippage during rotation, it also brings new challenges: due to the low connection strength of polygonal mating insertion and keyed connections, the drill rod is prone to falling off during use, causing unnecessary economic losses and safety hazards.

[0006] To achieve the above objectives, this utility model provides a grooved drill rod, comprising a rod body, an externally threaded rod, and an internally threaded ring. The top of the externally threaded rod is connected to a top post via a cylinder, the top post being connected to one end of the rod body. The internally threaded ring is connected to the other end of the rod body, and a convex ring adapted to the cylinder is connected to the top edge of the internally threaded ring.

[0007] The end of the top column and the end of the external threaded rod are detachably connected by a connecting structure.

[0008] The cylinder has several protrusions on its outer ring, which are connected to the side wall of the cylinder by an elastic structure. The inner ring of the protrusion ring has several circular holes that are adapted to the protrusions.

[0009] The diameter of the external threaded rod is matched with the inner diameter of the internal threaded ring, and the length of the external threaded rod is the same as the depth of the internal threaded ring.

[0010] One end of the top column is connected to a top outer ring, and one end of the internal threaded ring is connected to a bottom outer ring. A limit sleeve is provided between the bottom outer ring and the top outer ring.

[0011] The height of the convex ring is the same as the height of the cylinder, and a rubber ring is connected to the top edge of the convex ring.

[0012] The connecting structure includes several fixing screws located at the bottom of the bottom outer ring, with one end of each fixing screw threaded through the bottom outer ring and threadedly connected to the top outer ring.

[0013] This utility model discloses a grooved drill rod that enhances the connection stability between the rod bodies through a combination design of an externally threaded rod, an internally threaded ring, a cylinder, and a convex ring, as well as a top column and connecting structure, ensuring stable performance even under high-intensity working environments. This design not only improves the safety and reliability of drilling operations but also simplifies the installation and disassembly process, greatly increasing work efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the bottom outer ring and fixing screw of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the convex ring and circular hole in an embodiment of the present invention.

[0018] Figure 4 This is a schematic diagram of the top column and top outer ring of an embodiment of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the limiting sleeve and sealing ring according to an embodiment of the present invention.

[0020] In the diagram: 1. External threaded rod; 2. Rod body; 3. Internal threaded ring; 4. Limiting sleeve; 5. Bottom outer ring; 6. Fixing screw; 7. Convex ring; 8. Round hole; 9. Cylindrical ring; 10. Protrusion; 11. Top post; 12. Top outer ring; 13. Sealing ring. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Example 1

[0023] Please see Figure 1-5 As shown, a grooved drill rod of this embodiment includes a rod body 2, an external thread rod 1 and an internal thread ring 3. The top of the external thread rod 1 is connected to a top post 11 via a cylinder 9. The top post 11 is connected to one end of the rod body 2. The internal thread ring 3 is connected to the other end of the rod body 2. A convex ring 7 that is adapted to the cylinder 9 is connected to the top edge of the internal thread ring 3.

[0024] The end of the top column 11 and the end of the external threaded rod 1 are detachably connected by a connecting structure.

[0025] When connecting the two rods 2, firstly, one end of the externally threaded rod 1 is threaded to the inner wall of the internally threaded ring 3, while the cylinder 9 enters the interior of the convex ring 7 to ensure a tight fit between the two. The top post 11 is connected to one end of the rod 2, while the internally threaded ring 3 is connected to the other end of the rod 2. After the externally threaded rod 1 and the internally threaded ring 3 are initially connected, the end of the top post 11 and the end of the externally threaded rod 1 are further reinforced by a detachable connection structure. This design not only achieves a stable connection between the rods but also allows for quick assembly and disassembly as needed, improving operational flexibility. The entire process, through precise design, ensures a tight fit between the components, enabling the rod 2 to withstand significant torque during use without easily loosening or falling off.

[0026] The design incorporates an externally threaded rod 1, an internally threaded ring 3, a cylinder 9, and a convex ring 7, along with a top column 11 and a connecting structure, further enhancing the stability of the connections between the rods and ensuring stable performance even under high-intensity working conditions. This design not only improves the safety and reliability of drilling operations but also simplifies the installation and disassembly process, significantly increasing work efficiency.

[0027] Example 2

[0028] Please see Figure 1-5As shown in this embodiment, a grooved drill rod has a cylindrical outer ring 9 with several protrusions 10. The protrusions 10 are connected to the sidewall of the cylindrical 9 via an elastic structure. The inner ring 7 has several circular holes 8 that mate with the protrusions 10. Specifically, the arrangement of the protrusions 10 on the outer ring 9, the elastic structure connecting them to the sidewall, and the circular holes 8 on the inner ring 7, ensures that during operation, when the cylindrical 9 enters the circular ring 7, the protrusions 10 retract via the elastic structure and pop out and lock after entering the circular holes 8. This enhances the connection stability between the rod bodies 2, preventing loosening or detachment during use.

[0029] One end of the top post 11 is connected to a top outer ring 12, and the outer ring of one end of the internal threaded ring 3 is connected to a bottom outer ring 5. A limiting sleeve 4 is provided between the bottom outer ring 5 and the top outer ring 12, and sealing rings 13 are connected to both ends of the limiting sleeve 4. Specifically, the setting of the limiting sleeve 4 between the bottom outer ring 5 and the top outer ring 12, where one end of the top post 11 is connected to the top outer ring 12, and the outer ring of the internal threaded ring 3 is connected to the bottom outer ring 5, further enhances the strength and stability of the connection when the two rods 2 are connected during operation. This prevents damage to the connection due to uneven stress and improves the reliability and durability of the entire drill pipe system.

[0030] The connecting structure includes several fixing screws 6 located at the bottom of the bottom outer ring 5. One end of each fixing screw 6 is threaded through the bottom outer ring 5 and threadedly connected to the top outer ring 12. Specifically, by tightening the fixing screws 6 during operation, the bottom outer ring 5 and the top outer ring 12 are securely connected together. This further strengthens the connection between the rods 2, ensuring stable performance even under high-intensity working environments and preventing separation or loosening due to excessive torque.

[0031] Several protrusions 10 are provided on the outer ring of the cylinder 9. The protrusions 10 are connected to the side wall of the cylinder 9 through an elastic structure. Several circular holes 8 are provided on the inner ring of the convex ring 7 to match the protrusions 10. During operation, when the cylinder 9 enters the convex ring 7, the protrusions 10 contract through the elastic structure and pop out and lock after entering the circular holes 8. This enhances the connection stability between the rods 2 and prevents loosening or detachment during use. One end of the top column 11 is connected to a top outer ring 12, and one end of the inner threaded ring 3 is connected to a bottom outer ring 5. A limit sleeve 4 is provided between the bottom outer ring 5 and the top outer ring 12, and sealing rings 13 are connected to both ends of the limit sleeve 4. During operation, when the two rods 2 are connected, the limit sleeve 4 further enhances the strength and stability of the connection. This prevents damage to the connection due to uneven force and improves the reliability and durability of the entire drill pipe system. The connecting structure includes several fixing screws 6 located at the bottom of the bottom outer ring 5. One end of each fixing screw 6 is threaded through the bottom outer ring 5 and threadedly connected to the top outer ring 12. During operation, tightening the fixing screws 6 securely connects the bottom outer ring 5 and the top outer ring 12 together. This further strengthens the connection between the rods 2, ensuring stable performance even under high-intensity working conditions and preventing separation or loosening due to excessive torque.

[0032] Example 3

[0033] Please see Figure 1-5 As shown in this embodiment, a grooved drill rod has an external thread rod 1 whose diameter matches the inner diameter of an internal threaded ring 3, and whose length matches the depth of the internal threaded ring 3. Specifically, by matching the diameter of the external thread rod 1 to the inner diameter of the internal threaded ring 3 and ensuring that the length of the external thread rod 1 matches the depth of the internal threaded ring 3, a tight fit between the external thread rod 1 and the internal threaded ring 3 is ensured during operation. This improves the overall stability of the drill rod structure, allowing the rod body 2 to withstand greater torque without easily loosening or falling off.

[0034] The height of the convex ring 7 is the same as the height of the cylinder 9. A rubber ring is connected to the top edge of the convex ring 7. Specifically, by ensuring that the height of the convex ring 7 is the same as the height of the cylinder 9 and that a rubber ring is connected to the top edge of the convex ring 7, during operation, when the cylinder 9 is inserted into the convex ring 7, the rubber ring increases the friction while ensuring that the heights of the two are consistent. This improves the sealing and stability of the connection, reduces loosening caused by vibration or impact, and enhances the safety and reliability of the overall structure.

[0035] By matching the diameter of the external threaded rod 1 with the inner diameter of the internal threaded ring 3, and ensuring that the length of the external threaded rod 1 is the same as the depth of the internal threaded ring 3, a tight fit between the external threaded rod 1 and the internal threaded ring 3 is ensured during operation. This improves the overall stability of the drill pipe structure, allowing the rod body 2 to withstand greater torque without easily loosening or falling off. Furthermore, by ensuring that the height of the convex ring 7 is the same as the height of the cylinder 9, and that a rubber ring is connected to the top edge of the convex ring 7, the rubber ring increases friction when the cylinder 9 is inserted into the convex ring 7 during operation, while also ensuring that the heights of the two are consistent. This improves the sealing and stability of the connection, reduces loosening caused by vibration or impact, and enhances the safety and reliability of the overall structure.

[0036] This solution includes the following workflow:

[0037] One end of the externally threaded rod 1 is threaded to the inner wall of the internally threaded ring 3, while the cylinder 9 enters the interior of the convex ring 7, ensuring a tight fit between the two. The outer ring of the cylinder 9 is provided with several protrusions 10, which are connected to the side wall of the cylinder 9 through an elastic structure. When the cylinder 9 is inserted into the convex ring 7, the protrusions 10 contract through the elastic structure and pop out and lock after entering the circular hole 8 opened in the inner ring of the convex ring 7, further enhancing the stability of the connection. The top post 11 is connected to one end of the rod body 2, while the internally threaded ring 3 is connected to the other end of the rod body 2. The diameter of the externally threaded rod 1 matches the inner diameter of the internally threaded ring 3, and its length is the same as the depth of the internally threaded ring 3, ensuring a tight fit between the externally threaded rod 1 and the internally threaded ring 3. After the initial connection is completed, one end of the top post 11 is connected to a top outer ring 12, and one end of the outer ring of the internally threaded ring 3 is connected to a bottom outer ring 5. A limiting sleeve 4 is provided between the bottom outer ring 5 and the top outer ring 12, further enhancing the strength and stability of the connection. Furthermore, the height of the convex ring 7 is the same as the height of the cylinder 9, and a rubber ring is connected to the top edge of the convex ring 7. When the cylinder 9 is inserted into the convex ring 7, the rubber ring increases the friction and ensures that the two are at the same height. Finally, through several fixing screws 6 included in the connecting structure, one end of the fixing screw 6 is threaded through the bottom outer ring 5 and threadedly connected to the top outer ring 12. After tightening the fixing screw 6, the bottom outer ring 5 and the top outer ring 12 are firmly connected, further strengthening the connection between the rods 2.

[0038] The advantages of this grooved drill rod are reflected in several aspects: By adopting a combined design of an externally threaded rod 1, an internally threaded ring 3, a cylinder 9, and a convex ring 7, the problem of low connection strength in traditional polygonal fit insertion and keyed connections is solved, effectively preventing the drill rod from falling off due to excessive torque during use, reducing unnecessary economic losses and safety hazards; the design of the protrusion 10 on the outer ring of the cylinder 9 and the circular hole 8 on the inner ring of the convex ring 7 enhances the connection stability between the rod bodies 2, preventing loosening or falling off during use, and improving overall safety and reliability; the design of the diameter of the externally threaded rod 1 matching the inner diameter of the internally threaded ring 3 ensures the stability of the overall drill rod structure, enabling the rod body 2 to withstand greater torque without easily falling off. The limiting sleeve 4 set between the top outer ring 12 and the bottom outer ring 5 further enhances the strength and stability of the connection, preventing damage to the connection due to uneven force, and improving the reliability and durability of the entire drill pipe system; the rubber ring connected at the top edge of the convex ring 7 not only increases friction, but also ensures the height consistency between the cylinder 9 and the convex ring 7, thereby improving the sealing and stability of the connection, reducing loosening caused by vibration or impact, and enhancing the safety and reliability of the overall structure; the bottom outer ring 5 and the top outer ring 12 are firmly connected by the fixing screw 6, further strengthening the connection between the rod bodies 2, ensuring stable performance even in high-intensity working environments, and preventing separation or loosening due to excessive torque.

[0039] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A grooving drill rod characterized by, The utility model relates to a kind of telescopic rod, including: Rod body, outer thread rod and inner thread ring, the top of the outer thread rod is connected with top column by cylinder, the top column is connected in one end of rod body, the inner thread ring is connected in the other end of rod body, the top edge of the inner thread ring is connected with the convex ring matched with cylinder; The end of the top column and the end of the outer thread rod are detachably connected by connecting structure.

2. A grooving drill rod according to claim 1, characterized in that The outer circle of the cylinder is provided with several protrusions, the protrusions are connected with the side wall of cylinder by elastic structure, the inner circle of the convex ring is provided with several round holes matched with the protrusions.

3. A grooving drill rod according to claim 1, characterized in that The diameter of the outer thread rod is matched with the inner diameter of the inner thread ring, and the length of the outer thread rod is the same as the depth of the inner thread ring.

4. A grooving drill rod according to claim 2, wherein One end of the top column is connected with top outer ring, the outer circle of one end of the inner thread ring is connected with bottom outer ring, and a limiting sleeve is arranged between the bottom outer ring and the top outer ring.

5. A grooving drill rod according to claim 3, wherein The height of the convex ring is the same as the height of the cylinder, and a rubber ring is connected at the top edge of the convex ring.

6. A grooving drill rod according to claim 4, wherein The connecting structure includes several fixed screws arranged at the bottom of the bottom outer ring, and one end of the fixed screw is threaded through the bottom outer ring and threadedly connected with the top outer ring.

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