A mouth ring for a rotary drilling pipe

Abstract

The utility model relates to rotary drilling rod technical field, the present application discloses a kind of mouthpiece rings for rotary drilling rod, including mouthpiece ring body, connection groove is set up in the inside of mouthpiece ring body, connection lug is respectively set up in the both ends of mouthpiece ring body, bolt is inserted in the connection lug of mouthpiece ring body, nut is fixed in the inside of the connection groove of the both sides of mouthpiece ring body, bolt and nut are threadedly connected, the utility model is designed as split type structure by whole mouthpiece ring, when needing to replace, just loosen the bolt of connecting structure, mouthpiece ring can be detached from the side of drill rod and install new, whole drill rod group does not need to be disassembled.This makes replacement operation time shorten from several hours to ten minutes, greatly improves maintenance efficiency, reduces equipment downtime, solves the problem that existing mouthpiece ring is generally whole annular structure, and maintenance personnel replaces the process of mouthpiece ring is extremely tedious, time-consuming and laborious.

Description

Technical Field

[0001] This utility model application relates to the field of rotary drilling rod technology, specifically a protective ring for rotary drilling rods. Background Technology

[0002] Rotary drilling rods are the core transmission and pressure-bearing components of rotary drilling rigs, specifically designed for efficient cast-in-place pile construction. Their main body is a multi-section telescopic steel structure, connected section by section by high-strength threads. The internal structure is a square or hexagonal key bar structure, which can transmit the huge torque and pressure of the drilling rig's power head to the drill bit at the bottom without loss, while also enabling rapid lifting of drill cuttings. Drill rods must remain reliable under extreme working conditions such as severe wear, mud corrosion, and high-load impact. Their performance directly determines the drilling depth, efficiency, and hole quality, making them an indispensable key component in modern foundation engineering construction.

[0003] Existing end rings are usually integral circular structures, which need to be fitted onto the end of the drill rod during installation. When the end ring wears out due to long-term use and needs to be replaced, maintenance personnel must disassemble the entire drill rod assembly section by section in order to remove the worn end ring from the end of the drill rod and replace it with a new one. For rotary drilling rigs with multi-layer drill rods, this process is extremely cumbersome, time-consuming, and labor-intensive, resulting in high construction costs, long equipment downtime, and seriously affecting construction efficiency. Summary of the Invention

[0004] To address the problem that existing end rings are typically integral circular structures, making replacement extremely cumbersome, time-consuming, and labor-intensive for maintenance personnel, this invention provides an end ring for rotary drilling rods to solve the aforementioned issues.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A protective ring for rotary drilling rods includes a protective ring body, a connecting groove inside the protective ring body, connecting ears at both ends of the protective ring body, bolts inserted into the connecting ears of the protective ring body, and nuts fixed inside the connecting grooves on both sides of the protective ring body, with the bolts and nuts threadedly connected.

[0006] Furthermore, the protective ring body includes a first half-ring and a second half-ring, both of which are semi-circular rings.

[0007] Furthermore, a sealing groove is provided on the top surface of the protective ring body, and an O-ring is provided inside the sealing groove.

[0008] Furthermore, the material of the protective ring body is high-strength alloy steel, and the protective ring body is provided with a locking block inside.

[0009] Furthermore, the connecting groove is formed inside both sides of the protective ring body, and the length of the bolt is less than the length of the connecting groove.

[0010] Furthermore, the O-ring inside the sealing groove is made of surface-hardened high-manganese steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, by designing the integral end ring as a split structure, when replacement is needed, simply loosen the bolts connecting the structure to remove the end ring from the side of the drill pipe and install a new one, without disassembling the entire drill pipe assembly. This reduces replacement time from several hours to just a few minutes, greatly improving maintenance efficiency, reducing equipment downtime, and solving the problem that existing end rings are usually integral circular structures, making the replacement process extremely cumbersome, time-consuming, and labor-intensive for maintenance personnel.

[0012] 2. In this utility model, the separate blocks are tightly connected into one unit by bolt connection, which ensures the overall rigidity and load-bearing capacity of the protective ring. The separate design does not affect its original protection, guidance and sealing functions. At the same time, the design of the sealing groove ensures that the separate design also has high connection strength. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the front-end three-dimensional structure according to an embodiment of this application; Figure 2 yes Figure 1 A three-dimensional schematic diagram of the back-end structure in the embodiment shown; Figure 3 yes Figure 1 The diagram shown is a three-dimensional representation of the structure after the front end is opened in the embodiment shown. Figure 4 yes Figure 1 The illustrated embodiment is a three-dimensional schematic diagram of the structure after the back end is opened.

[0015] The meanings of the reference numerals in the figure are as follows: 1. Protective ring body; 11. First half ring; 12. Second half ring; 2. Connecting groove; 3. Bolt; 4. Nut; 5. Sealing groove. Detailed Implementation

[0016] To make the purpose, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0017] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A protective ring for rotary drilling rods includes a protective ring body 1, a connecting groove 2 inside the protective ring body 1, connecting ears at both ends of the protective ring body 1, a bolt 3 inserted into the connecting ears of the protective ring body 1, and nuts 4 fixed inside the connecting grooves 2 on both sides of the protective ring body 1. The bolt 3 and the nut 4 are threadedly connected, and the protective ring body 1 is fixed by the bolt 3 and the nut 4.

[0018] Specifically, the protective ring body 1 includes a first half-ring 11 and a second half-ring 12. The first half-ring 11 and the second half-ring 12 are both semi-circular rings with the same shape. The protective ring body 1 is made of high-strength alloy steel. The protective ring body 1 has a locking block inside. The connecting groove 2 is opened inside both sides of the protective ring body 1. The length of the bolt 3 is less than the length of the connecting groove 2, so that the bolt 3 is set inside the connecting groove 2.

[0019] As an optimization solution, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a sealing groove 5 is provided on the top surface of the protective ring body 1, and an O-ring is provided inside the sealing groove 5 so that the sealing ring fixes the first half ring 11 and the second half ring 12.

[0020] Specifically, the O-ring inside the sealing groove 5 is made of surface-hardened high-manganese steel, which enhances the fixing strength after the first half-ring 11 and the second half-ring 12 are joined together.

[0021] Working principle: The protective ring body 1 is a protective ring body 1 composed of two arc-shaped split blocks, a first half-ring 11 and a second half-ring 12. The mating ends of the two half-rings are respectively provided with connecting ears with through holes. By passing high-strength bolts 3 and nuts 4 through the connecting ears and tightening them, the two half-rings can be firmly combined into a complete ring structure.

[0022] A sealing groove 5 is provided on the end face of the protective ring body 1 for installing an O-ring to achieve a seal with adjacent components.

[0023] When it is necessary to replace the worn guard ring body 1, the operator only needs to use a hex screwdriver to unscrew the bolt 3 connecting the two half rings, pull out the bolt 3, then separate the first half ring 11 and the second half ring 12 from the side of the drill rod and remove them. After cleaning the installation area, put the new first half ring 11 and the second half ring 12 together from both sides of the drill rod, align them with the positions of the connecting grooves 2 on both sides, insert the bolt 3 and tighten it, so that the bolt 3 is threadedly connected to the nut 4, and the replacement is completed. The whole process does not require loosening or disassembling any other part of the drill rod.

[0024] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A retaining ring for rotary drilling rods, comprising a retaining ring body (1), characterized in that: The protective ring body (1) is composed of two arc-shaped split blocks symmetrically arranged and assembled. The protective ring body (1) has a connecting groove (2) inside. The protective ring body (1) has connecting ears at both ends. Bolts (3) are inserted into the connecting ears of the protective ring body (1). Nuts (4) are fixed inside the connecting grooves (2) on both sides of the protective ring body (1). The bolts (3) and nuts (4) are threadedly connected.

2. The retaining ring for rotary drilling rods according to claim 1, characterized in that: The protective ring body (1) includes a first half-ring (11) and a second half-ring (12), both of which are semi-circular rings.

3. The retaining ring for rotary drilling rods according to claim 1, characterized in that: The top surface of the protective ring body (1) is provided with a sealing groove (5), and an O-ring is provided inside the sealing groove (5).

4. The retaining ring for rotary drilling rods according to claim 1, characterized in that: The material of the protective ring body (1) is high-strength alloy steel, and the protective ring body (1) is provided with a locking block inside.

5. A retaining ring for rotary drilling rods according to claim 1, characterized in that: The connecting groove (2) is opened inside both sides of the protective ring body (1), and the length of the bolt (3) is less than the length of the connecting groove (2).

6. A retaining ring for rotary drilling rods according to claim 3, characterized in that: The O-ring inside the sealing groove (5) is made of surface-hardened high manganese steel.

Images