Ejector head with nose part resistant to high-temperature deformation

Abstract

The utility model relates to the technical field of top heads, and discloses a top head with a nose part resistant to high-temperature deformation, which comprises a top head nose part and a top head tail part, the top head nose part is matched with the top head tail part, a thread part is arranged at the end of the top head nose part, the total thread pitch of the thread part is 50mm, and the top head nose part is matched with the top head tail part. A plurality of internal thread bushings are fixedly connected to one side of the plug nose part, and a plurality of circular grooves matched with the internal thread bushings are formed in one side of the plug tail part. The threaded part with the total screw pitch of 50mm is arranged at the end head of the plug nose part, so that an oxide layer at the end head reaches a certain thickness, the temperature rise time of the plug nose part can be effectively prevented in the steel pipe rolling process, the high-temperature deformation resistance of the plug nose part is improved, the service life of the plug is prolonged, and the service life of the plug is prolonged. And through the internal thread sleeve, the circular groove and the first bolt, quick installation between the plug nose part and the plug tail part is facilitated, replacement of the plug nose part is facilitated, the whole plug does not need to be replaced, and the replacement and use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mandrels, in particular to a mandrel with a nose resistant to high-temperature deformation. Background Technique

[0002] The steel plant is an important industrial field, and various equipment and machines are required in its production process; among them, the piercing mandrel is a common equipment in the steel plant. One end of the piercing mandrel is connected to the piercing power equipment, and while driving the piercing mandrel to move, it rotates, so that the steel pipe can be pierced.

[0003] However, when the mandrel rolls steel grades such as P5, the nose of the mandrel is prone to melting and deformation and fails, and the entire mandrel needs to be replaced, resulting in high use costs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a mandrel with a nose resistant to high-temperature deformation, and solve the problems put forward in the background technique.

[0005] The embodiment of the present application provides a mandrel with a nose resistant to high-temperature deformation, including a mandrel nose and a mandrel tail. The mandrel nose is adapted to the mandrel tail. A threaded portion is provided at the end of the mandrel nose, and the total pitch of the threaded portion is 50 mm. A plurality of internal threaded sleeves are fixedly connected to one side of the mandrel nose. A plurality of circular grooves matching the internal threaded sleeves are provided on one side of the mandrel tail. A bolt I is penetrated and threadedly connected inside the circular groove, and the bolt I is adapted to the internal threaded sleeve.

[0006] By adopting the above technical solution, a threaded portion with a total pitch of 50 mm is provided at the end of the mandrel nose, so that the oxide layer at this place reaches a certain thickness, which can effectively prevent the temperature rise time of the mandrel nose during the steel pipe rolling process, increase the high-temperature deformation resistance of the mandrel nose. Insert the internal threaded sleeve into the corresponding circular groove, and screw the bolt I into the internal threaded sleeve, then the quick installation between the mandrel nose and the mandrel tail can be completed, which is convenient for replacing the mandrel nose.

[0007] Optionally, an installation shaft passes through the inside of the mandrel tail, and a plurality of positioning members are fixedly connected to the inner wall of the mandrel tail. A plurality of positioning rods are fixedly connected to the outer wall of one end of the installation shaft inside the mandrel tail. A positioning groove matching the positioning rod is provided on the side of the positioning member away from the inner wall of the mandrel tail. One end of the positioning rod is inside the positioning groove. Half-threaded holes I are symmetrically provided on the front and rear inner walls of the positioning groove. Half-threaded holes II are symmetrically provided on the front and rear sides of the positioning rod. A matching bolt II is threadedly connected inside the half-threaded hole I and the half-threaded hole II.

[0008] By adopting the above technical solution, the end of the installation shaft is inserted into the interior of the tail of the top head, the end of the positioning rod enters into the positioning groove of the corresponding positioning member, and then the second bolt is screwed into the first half-threaded hole and the second half-threaded hole, thus completing the rapid installation of the installation shaft, and the positioning member and the positioning rod enhance the anti-torsion ability between the tail of the top head and the installation shaft.

[0009] Optionally, the number of the internal thread sleeves is equal to that of the circular grooves, and each internal thread sleeve corresponds to each circular groove one by one.

[0010] By adopting the above technical solution, the stability of the installation of the nose of the top head and the tail of the top head is ensured.

[0011] Optionally, the nose of the top head and the internal thread sleeve are integrally formed by casting.

[0012] By adopting the above technical solution, the connection strength between the nose of the top head and the internal thread sleeve is ensured.

[0013] Optionally, the number of the positioning members is equal to that of the positioning rods, and each positioning member corresponds to each positioning rod one by one.

[0014] By adopting the above technical solution, the anti-torsion ability between the tail of the top head and the installation shaft is ensured.

[0015] Optionally, an installation hole is provided on the installation shaft.

[0016] By adopting the above technical solution, it is convenient to connect the top head with the piercing power equipment.

[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, a threaded portion with a total pitch of 50 mm is provided at the end of the nose of the top head, so that the oxide layer at this place reaches a certain thickness, which can effectively prevent the nose of the top head from heating up during the steel pipe rolling process, enhance the anti-high temperature deformation ability of the nose of the top head, increase the service life of the top head, and through the internal thread sleeve, the circular groove and the first bolt, it is convenient for the rapid installation between the nose of the top head and the tail of the top head, convenient for the replacement of the nose of the top head, without replacing the whole top head, and reduces the replacement and use cost.

[0019] 2. In the technical solution of the present application, the end of the installation shaft is inserted into the interior of the tail of the top head, the end of the positioning rod enters into the positioning groove of the corresponding positioning member, and then the second bolt is screwed into the first half-threaded hole and the second half-threaded hole, thus completing the rapid installation of the installation shaft, and the positioning member and the positioning rod enhance the anti-torsion ability between the tail of the top head and the installation shaft, and ensure the stability of the piercing of the top head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objectives, and advantages of the present utility model will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 Structural schematic diagram of the present utility model;

[0022] Figure 2 Structural schematic diagram of the disassembly of the nose end and the tail end of the top head of the present utility model;

[0023] Figure 3 Cross-sectional view of the main view of the tail end of the top head of the present utility model;

[0024] Figure 4 Cross-sectional view of the side view of the tail end of the top head of the present utility model;

[0025] Figure 5 For the present utility model Figure 4 Enlarged view of A in

[0026] In the figure: 1, nose end of the top head; 2, tail end of the top head; 3, threaded part; 4, mounting shaft; 5, mounting hole; 6, internal thread sleeve; 7, circular groove; 8, bolt one; 9, positioning part; 10, positioning rod; 11, positioning groove; 12, half-threaded hole one; 13, half-threaded hole two; 14, bolt two. Specific embodiments

[0027] 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.

[0028] Please refer to Figure 1-2 , the present utility model provides a technical solution: including a nose end 1 of the top head and a tail end 2 of the top head. The nose end 1 of the top head is adapted to the tail end 2 of the top head. A threaded part 3 is provided at the end of the nose end 1 of the top head. The total pitch of the threaded part 3 is 50 mm. A plurality of internal thread sleeves 6 are fixedly connected to one side of the nose end 1 of the top head. A plurality of circular grooves 7 matching the internal thread sleeves 6 are provided on one side of the tail end 2 of the top head. A bolt one 8 is penetrated and threadedly connected inside the circular groove 7. The bolt one 8 is adapted to the internal thread sleeve 6;

[0029] In this technical solution, by providing a threaded portion 3 with a total pitch of 50 mm at the end of the nose portion 1 of the plug, the oxide layer at this location reaches a certain thickness, which can effectively prevent the temperature rise of the nose portion 1 of the plug during the steel pipe rolling process, increase the high-temperature deformation resistance of the nose portion 1 of the plug, increase the service life of the plug, and by inserting the internal threaded sleeve 6 into the corresponding circular groove 7 and screwing the first bolt 8 into the internal threaded sleeve 6, the quick installation between the nose portion 1 of the plug and the tail portion 2 of the plug can be completed, facilitating the replacement of the nose portion 1 of the plug without replacing the entire plug, reducing the replacement and usage cost.

[0030] In some technical solutions, such as Figure 3-5 As shown, an installation shaft 4 passes through the inside of the tail portion 2 of the plug, and a plurality of positioning members 9 are fixedly connected to the inner wall of the tail portion 2 of the plug. A plurality of positioning rods 10 are fixedly connected to the outer wall of one end of the installation shaft 4 located inside the tail portion 2 of the plug. A positioning groove 11 matching the positioning rod 10 is provided on one side of the positioning member 9 away from the inner wall of the tail portion 2 of the plug. One end of the positioning rod 10 is located inside the positioning groove 11. Semi-threaded holes one 12 are symmetrically provided on the front and rear inner walls of the positioning groove 11, and semi-threaded holes two 13 are symmetrically provided on the front and rear sides of the positioning rod 10. A matching second bolt 14 is threadedly connected inside the semi-threaded hole one 12 and the semi-threaded hole two 13.

[0031] During use, by inserting the end of the installation shaft 4 into the inside of the tail portion 2 of the plug, the end of the positioning rod 10 is made to enter the positioning groove 11 of the corresponding positioning member 9, and then the second bolt 14 is screwed into the semi-threaded hole one 12 and the semi-threaded hole two 13, the quick installation of the installation shaft 4 can be completed, and the positioning member 9 and the positioning rod 10 increase the anti-torsion ability between the tail portion 2 of the plug and the installation shaft 4, ensuring the stability of the plug piercing.

[0032] In some technical solutions, such as Figure 2 As shown, the number of internal threaded sleeves 6 is equal to the number of circular grooves 7, and each internal threaded sleeve 6 corresponds to each circular groove 7 one by one.

[0033] During use, through the one-to-one corresponding internal threaded sleeve 6 and circular groove 7, the stability of the installation of the nose portion 1 of the plug and the tail portion 2 of the plug is ensured.

[0034] In some technical solutions, such as Figure 2 As shown, the nose portion 1 of the plug and the internal threaded sleeve 6 are integrally formed by casting.

[0035] During use, the connection strength between the nose portion 1 of the plug and the internal threaded sleeve 6 is ensured.

[0036] In some technical solutions, such as Figure 4 As shown, the number of positioning members 9 is equal to the number of positioning rods 10, and each positioning member 9 corresponds to each positioning rod 10 one by one.

[0037] In use, the anti-torsion ability between the tail 2 of the plug and the mounting shaft 4 is ensured by the corresponding positioning members 9 and positioning rods 10.

[0038] In some technical solutions, such as Figure 1-3 As shown, a mounting hole 5 is provided on the mounting shaft 4.

[0039] In use, the plug can be conveniently connected to the perforating power equipment through the mounting hole 5.

[0040] Working principle: During use, by providing a threaded portion 3 with a total pitch of 50 mm at the end of the nose 1 of the plug, the oxide layer at this location reaches a certain thickness, which can effectively prevent the nose 1 of the plug from heating up during the steel pipe rolling process, increase the high-temperature deformation resistance of the nose 1 of the plug, and increase the service life of the plug; during installation, by inserting the internal thread sleeve 6 into the corresponding circular groove 7 and screwing the first bolt 8 into the internal thread sleeve 6, the quick installation between the nose 1 of the plug and the tail 2 of the plug can be completed, facilitating the replacement of the nose 1 of the plug. Insert the end of the mounting shaft 4 into the inside of the tail 2 of the plug, so that the end of the positioning rod 10 enters the positioning groove 11 of the corresponding positioning member 9, and then screw the second bolt 14 into the first half-threaded hole 12 and the second half-threaded hole 13, and the quick installation of the mounting shaft 4 can be completed. Moreover, the positioning member 9 and the positioning rod 10 increase the anti-torsion ability between the tail 2 of the plug and the mounting shaft 4.

[0041] 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, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, 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 plug with a nose portion resistant to high temperature deformation, comprising a plug nose portion (1) and a plug tail portion (2), characterized in that: The plug nose (1) is matched with the plug tail (2); a threaded portion (3) is provided at the end of the plug nose (1); the total pitch of the threaded portion (3) is 50 mm; a plurality of internal threaded sleeves (6) are fixedly connected to one side of the plug nose (1); a plurality of circular grooves (7) matching the internal threaded sleeves (6) are provided on one side of the plug tail (2); a bolt (8) is passed through the inside of the circular groove (7) and is threadedly connected; the bolt (8) is matched with the internal threaded sleeve (6).

2. A plug with a nose portion resistant to high temperature deformation according to claim 1, characterized in that: A mounting shaft (4) passes through the interior of the plug tail (2), and a plurality of positioning members (9) are fixedly connected to the inner wall of the plug tail (2); a plurality of positioning rods (10) are fixedly connected to the outer wall of one end of the mounting shaft (4) located inside the plug tail (2); a positioning groove (11) matching the positioning rod (10) is provided on the side of the positioning member (9) away from the inner wall of the plug tail (2); one end of the positioning rod (10) is located inside the positioning groove (11); a semi-threaded hole 1 (12) is symmetrically provided on the front and rear inner walls of the positioning groove (11); a semi-threaded hole 2 (13) is symmetrically provided on the front and rear sides of the positioning rod (10); and a matching bolt 2 (14) is connected to the inner threads of the semi-threaded hole 1 (12) and the semi-threaded hole 2 (13).

3. The plug with a nose portion resistant to high temperature deformation according to claim 1, characterized in that: The number of the internal thread sleeves (6) and the number of the circular grooves (7) are equal, and each of the internal thread sleeves (6) corresponds to each of the circular grooves (7) on a one-to-one basis.

4. The plug with a nose portion resistant to high temperature deformation according to claim 1, characterized in that: The plug nose (1) and the internal thread sleeve (6) are integrally formed by casting.

5. The plug with a nose portion resistant to high temperature deformation according to claim 2, characterized in that: The number of the positioning members (9) and the number of the positioning rods (10) are equal, and each positioning member (9) corresponds one-to-one to each positioning rod (10).

6. The plug with a nose portion resistant to high temperature deformation according to claim 2, characterized in that: The mounting shaft (4) is provided with a mounting hole (5).

Images