Novel piercing plug

Abstract

The utility model relates to the technical field of steel pipe piercing plugs, and discloses a novel piercing plug, which comprises a plug, the plug sequentially comprises a head part, a rolling section part and a mounting part, the outer wall of the head part is provided with an external thread I, the outer wall of the rolling section part is provided with an external thread II, the thread depths of all parts of the external thread I are consistent, and the mounting part is provided with an external thread II. The thread depth, away from the first external thread, of the second external thread is gradually shallower to zero, and a protection assembly is arranged on one side of the mounting part and used for reducing instantaneous impact force borne by the ejector head. The first external thread with the consistent thread depth is arranged at the top, and the second external thread with the thread depth gradually reduced to zero is arranged at the rolling section part, so that the steel pipe can be smoothly perforated, the rolling section part is prevented from causing thread-shaped scratches on the inner wall of the steel pipe, the steel pipe perforating quality is improved, and the service life of the steel pipe is prolonged. And the defect that scratches are easily caused in the perforating process is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe piercing plugs, in particular to a novel piercing plug. Background Art

[0002] Steel mills are an important industrial field, and various equipment and machines are required in the production process; among them, piercing plugs are a common type of equipment in steel mills. One end of the piercing plug is connected to a piercing power machine. While the piercing plug moves and rotates, the steel pipe can be perforated.

[0003] However, the thread depth of the reaming part (rolling section) of the traditional piercing plug is consistent. When perforating the steel pipe, if the thread depth is too deep, the inner wall of the steel pipe will show thread-shaped scratches, which have defects in piercing and result in low quality of the inner wall of the steel pipe. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a novel piercing plug to solve the problems raised in the background art.

[0005] The embodiment of the present application provides a novel piercing plug, including a plug head. The plug head sequentially includes a head, a rolling section part and an installation part. An external thread one is provided on the outer wall of the head, and an external thread two is provided on the outer wall of the rolling section part. The thread depth of each part of the external thread one is consistent. The thread depth of the external thread two gradually becomes shallower until it is zero away from the external thread one. A protection component is provided on one side of the installation part. The protection component is used to reduce the instantaneous impact force received by the plug head, and the protection component includes a connection part and a protection part.

[0006] By adopting the above technical solutions, an external thread one with a consistent thread depth is provided at the plug head and an external thread two with a gradually shallower thread depth until it is zero is provided at the rolling section part. While the steel pipe can be successfully perforated, it can prevent the rolling section part from causing thread-shaped scratches on the inner wall of the steel pipe and improve the quality of steel pipe piercing.

[0007] Optionally, the connection part is fixedly connected to one side of the installation part, and a groove is opened on the side of the connection part away from the installation part. One end of the protection part is inside the groove, and the protection part is adapted to the groove. A sliding shaft penetrates through and is slidably connected to the protection part. A spring is sleeved on the sliding shaft. Both ends of the sliding shaft are fixedly installed on the inner wall of the groove. One end of the spring contacts the inner wall of the groove, and the other end of the spring contacts the protection part.

[0008] By adopting the above technical solutions, the limiting effect of the sliding shaft enables the protection part to only move horizontally along the groove. The elastic force of the spring can buffer the displacement of the protection part, so that when the plug head receives a large instantaneous impact force, the force can be buffered to protect the plug head.

[0009] Optionally, a slot is provided at one end of the protective member outside the groove, and a mounting shaft is provided on one side of the protective member close to the slot. One end of the mounting shaft is inside the slot, and the mounting shaft is adapted to the slot. A plurality of first threaded shafts are fixedly connected to one side of the protective member around the slot. An installation ring is fixedly connected to the outer wall of the mounting shaft. A plurality of second threaded shafts are fixedly connected to one side of the installation ring. An internal threaded sleeve is sleeved on the first threaded shaft, and the first threaded shaft, the second threaded shaft and the internal threaded sleeve are all adapted to each other.

[0010] By adopting the above technical solution, insert the end of the mounting shaft into the slot and rotate the internal threaded sleeve so that a part of the internal threaded sleeve is screwed onto the second threaded shaft, then the installation between the mounting shaft and the top head can be completed.

[0011] Optionally, the head, the rolling section and the installation section are all integrally formed by casting.

[0012] By adopting the above technical solution, the strength of the top head is increased.

[0013] Optionally, the number of the first threaded shafts, the second threaded shafts and the internal threaded sleeves is equal, and each of the first threaded shafts, each of the second threaded shafts and each of the internal threaded sleeves corresponds to each other.

[0014] By adopting the above technical solution, the stability of the installation between the mounting shaft and the top head is increased.

[0015] Optionally, a mounting hole is provided on the mounting shaft.

[0016] By adopting the above technical solution, it is convenient to connect the mounting shaft with the perforating power machinery.

[0017] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0018] 1. In the technical solution of the present application, an external thread one with a consistent thread depth is provided at the top head, and an external thread two with a gradually decreasing thread depth until it becomes zero is provided at the rolling section. While being able to smoothly perforate the steel pipe, it prevents the rolling section from causing threaded scratches on the inner wall of the steel pipe, improves the quality of steel pipe perforation, and effectively avoids the generation of scratch defects during the perforation process.

[0019] 2. In the technical solution of the present application, through the limiting effect of the sliding shaft, the protective member can only move horizontally along the groove. Through the elastic force of the spring, the displacement amount of the protective member can be buffered, so that when the top head receives a large instantaneous impact force, force buffering can be carried out to protect the top head and increase its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objects and advantages of the present invention will become more apparent:

[0021] Figure 1 is a schematic structural view of the present utility model;

[0022] Figure 2 is a sectional view of the connection part and the protection part of the present utility model seen from the front;

[0023] Figure 3 is a schematic structural view of the protection part and the installation shaft of the present utility model;

[0024] Figure 4 For the present utility model Figure 3 is an enlarged view of A in the present utility model.

[0025] In the figure: 1, the top head; 2, the head; 3, the rolling section; 4, the installation part; 5, the first external thread; 6, the second external thread; 7, the connection part; 8, the protection part; 9, the installation shaft; 10, the installation ring; 11, the installation hole; 12, the groove; 13, the sliding shaft; 14, the spring; 15, the slot; 16, the first threaded shaft; 17, the second threaded shaft; 18, the internal thread sleeve. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0027] Please refer to Figure 1 , the present utility model provides a technical solution: including a top head 1, the top head 1 successively includes a head 2, a rolling section 3 and an installation part 4. The outer wall of the head 2 is provided with a first external thread 5, and the outer wall of the rolling section 3 is provided with a second external thread 6. The thread depth of each part of the first external thread 5 is the same, and the thread depth of the second external thread 6 gradually becomes shallower until it is zero away from the first external thread 5. One side of the installation part 4 is provided with a protection assembly, and the protection assembly is used to reduce the instantaneous impact force received by the top head 1, and the protection assembly includes a connection part 7 and a protection part 8;

[0028] In this technical solution, by providing a first external thread 5 with the same thread depth at the top head 1 and a second external thread 6 with a gradually shallower thread depth until it is zero at the rolling section 3, while being able to smoothly pierce the steel pipe, it is possible to prevent the rolling section 3 from causing thread-like scratches on the inner wall of the steel pipe, improve the quality of piercing the steel pipe, and effectively avoid the generation of scratch defects during the piercing process.

[0029] In some technical solutions, such as Figure 1-2As shown, the connecting part 7 is fixedly connected to one side of the mounting part 4, and a groove 12 is formed on the side of the connecting part 7 away from the mounting part 4. One end of the protection part 8 is inside the groove 12, and the protection part 8 is adapted to the groove 12. A sliding shaft 13 penetrates and is slidably connected to the protection part 8. A spring 14 is sleeved on the sliding shaft 13. Both ends of the sliding shaft 13 are fixedly installed on the inner wall of the groove 12. One end of the spring 14 contacts the inner wall of the groove 12, and the other end of the spring 14 contacts the protection part 8.

[0030] During use, due to the limiting effect of the sliding shaft 13, the protection part 8 can only move horizontally along the groove 12. The elastic force of the spring 14 can buffer the displacement of the protection part 8, so that when the top head 1 receives a large instantaneous impact force, force buffering can be carried out to protect the top head 1 and increase its service life.

[0031] In some technical solutions, such as Figure 1 , Figure 3 and Figure 4 As shown, a slot 15 is formed at one end of the protection part 8 outside the groove 12, and a mounting shaft 9 is arranged on one side of the protection part 8 close to the slot 15. One end of the mounting shaft 9 is inside the slot 15, and the mounting shaft 9 is adapted to the slot 15. A plurality of first threaded shafts 16 are fixedly connected to the side of the protection part 8 around the slot 15. A mounting ring 10 is fixedly connected to the outer wall of the mounting shaft 9. A plurality of second threaded shafts 17 are fixedly connected to one side of the mounting ring 10. An internal threaded sleeve 18 is sleeved on the first threaded shaft 16. The first threaded shaft 16, the second threaded shaft 17 and the internal threaded sleeve 18 are all adapted to each other.

[0032] During use, by inserting the end of the mounting shaft 9 into the slot 15, rotating the mounting shaft 9 to align the first threaded shaft 16 with the second threaded shaft 17, and then rotating the internal threaded sleeve 18 so that a part of the internal threaded sleeve 18 is screwed onto the second threaded shaft 17, the installation between the mounting shaft 9 and the top head 1 can be completed, and the installation and use are convenient.

[0033] In some technical solutions, such as Figure 1 As shown, the head 2, the rolling section 3 and the mounting part 4 are all integrally formed by casting.

[0034] During use, the integrally formed head 2, rolling section 3 and mounting part 4 by casting increase the strength of the top head 1.

[0035] In some technical solutions, as shown in Figure 4 As shown, the number of the first threaded shafts 16, the second threaded shafts 17 and the internal threaded sleeves 18 is equal, and each first threaded shaft 16, each second threaded shaft 17 and each internal threaded sleeve 18 correspond to each other.

[0036] In use, through the mutually corresponding threaded shaft 16, threaded shaft 17 and internal threaded sleeve 18, the stability of the installation between the installation shaft 9 and the top head 1 is increased.

[0037] In some technical solutions, such as Figure 1 and Figure 3 as shown, an installation hole 11 is provided on the installation shaft 9.

[0038] In use, the installation shaft 9 can be conveniently connected to the perforating power machine through the installation hole 11.

[0039] Working principle: During the installation process, insert the end of the installation shaft 9 into the slot 15, rotate the installation shaft 9 to align the threaded shaft 16 with the threaded shaft 17, and then rotate the internal threaded sleeve 18 so that a part of the internal threaded sleeve 18 is screwed onto the threaded shaft 17, and the installation between the installation shaft 9 and the top head 1 can be completed; during use, by setting the external thread 1 5 with the same thread depth at the top head 1 and setting the external thread 2 6 with a gradually decreasing thread depth until it becomes zero at the rolling section 3, while the steel pipe can be smoothly perforated, it can prevent the rolling section 3 from causing threaded scratches on the inner wall of the steel pipe, improve the quality of the steel pipe perforation, and through the limiting effect of the sliding shaft 13, the protection part 8 can only move horizontally along the groove 12, and the elastic force of the spring 14 can buffer the displacement of the protection part 8, so that when the top head 1 receives a large instantaneous impact force, the force can be buffered to protect the top head 1.

[0040] The above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A novel perforating plug, comprising a plug (1), characterized in that: The plug (1) comprises a head (2), a rolling section (3) and a mounting section (4) in sequence; the outer wall of the head (2) is provided with an external thread 1 (5); the outer wall of the rolling section (3) is provided with an external thread 2 (6); the thread depth of the external thread 1 (5) is consistent at all locations; the thread depth of the external thread 2 (6) gradually becomes shallower as it moves away from the external thread 1 (5) until it reaches zero; a protective component is provided on one side of the mounting section (4); the protective component is used to reduce the instantaneous impact force on the plug (1); and the protective component comprises a connecting portion (7) and a protective member (8).

2. A novel perforating plug according to claim 1, characterized in that: The connecting portion (7) is fixedly connected to one side of the mounting portion (4), and a groove (12) is provided on a side of the connecting portion (7) away from the mounting portion (4); one end of the protective member (8) is located inside the groove (12), and the protective member (8) is adapted to the groove (12); a sliding shaft (13) passes through and is slidably connected to the protective member (8); a spring (14) is sleeved on the sliding shaft (13); two ends of the sliding shaft (13) are fixedly mounted to the inner wall of the groove (12); one end of the spring (14) contacts the inner wall of the groove (12), and the other end of the spring (14) contacts the protective member (8).

3. A novel perforating plug according to claim 2, characterized in that: A slot (15) is provided at one end of the protective member (8) outside the groove (12), and a mounting shaft (9) is provided on a side of the protective member (8) close to the slot (15), one end of the mounting shaft (9) is inside the slot (15), and the mounting shaft (9) is matched with the slot (15), a plurality of threaded shafts (16) are fixedly connected to one side of the protective member (8) around the slot (15), a mounting ring (10) is fixedly connected to the outer wall of the mounting shaft (9), and a plurality of threaded shafts (17) are fixedly connected to one side of the mounting ring (10), an internal threaded sleeve (18) is sleeved on the threaded shaft (16), and the threaded shaft (16) and the threaded shaft (17) are matched with the internal threaded sleeve (18).

4. A novel perforating plug according to claim 1, characterized in that: The head portion (2), the rolled section portion (3) and the mounting portion (4) are all integrally formed by casting.

5. A novel perforating plug according to claim 3, characterized in that: The number of the threaded shaft one (16), the threaded shaft two (17) and the internal threaded sleeve (18) is equal, and each threaded shaft one (16), each threaded shaft two (17) and each internal threaded sleeve (18) correspond to each other.

6. A novel perforating plug according to claim 3, characterized in that: The mounting shaft (9) is provided with a mounting hole (11).

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