Dismounting device of seamless steel pipe cold-rolling mill ring hole pattern

Abstract

The utility model discloses a dismounting device for a ring pass of a seamless steel tube cold-rolling mill, belongs to the technical field of cold-rolling mills, and solves the problem that the whole ring pass needs to be replaced because the ring pass is gradually damaged under long-term and multi-time rigid collision. Comprising a connecting cylinder used for being in transmission connection with the cold rolling mill and an annular hole pattern, bearing columns are integrally formed at the two ends of the annular hole pattern, embedding columns are integrally formed at the ends, away from the annular hole pattern, of the bearing columns, and embedding grooves allowing the embedding columns to be inserted therein are formed in the connecting cylinder. A torque wrench or other tools are used for applying force to the bolt for dismounting, an operator can conveniently take out the sealing plate and replace the ring hole type, it is guaranteed that even if the bolt is broken, acting force can be transmitted through the design of staggering the central axis, slipping is avoided, and after installation is completed, the bolt is connected and fixed through threads. And by arranging the sealing ring and the limiting ring, the connection stability is enhanced, impact is relieved, and it is ensured that the bolt is not prone to loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of cold rolling mills, in particular to a disassembly device for a ring hole type of a seamless steel pipe cold rolling mill. Background Art

[0002] The ring pass of the seamless steel pipe cold rolling mill is an important tool used in the production of seamless steel pipes, which determines the dimensional accuracy and surface quality of the steel pipe. The ring pass is a set of dies with different inner diameters and profiles installed on the cold rolling mill. By rolling the round billet multiple times, its diameter is gradually reduced and the uniformity of the wall thickness and the surface finish of the pipe are improved.

[0003] Since the ring hole is mainly used to adjust the steel pipe, it is also the position most prone to rigid collision. For the processing plant, the processing of seamless steel pipes through the ring hole of the cold rolling mill requires high-intensity work 24 hours a day. As a result, the ring hole will gradually be damaged under long-term and multiple rigid collisions, which requires the ring hole to be completely replaced.

[0004] Therefore, a disassembly device for the ring pass profile of a seamless steel pipe cold rolling mill is proposed to solve or alleviate the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a disassembly device for the ring hole type of a seamless steel pipe cold rolling mill.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A disassembly device for the ring hole type of a seamless steel pipe cold rolling mill comprises a connecting cylinder for transmission connection with the cold rolling mill, and a ring hole type, both ends of the ring hole type are integrally formed with receiving columns, the end of the receiving column away from the ring hole type is integrally formed with an embedded column, an embedding groove for inserting the embedded column is provided in the connecting cylinder, and the ring hole type, the receiving column, and the embedded column form a stepped structure, an eccentric ring block eccentrically arranged therewith is integrally formed on the end face of the receiving column, and an eccentric ring groove for accommodating the eccentric ring block is provided on the connecting cylinder.

[0008] Preferably, the central axis of the embedding groove and the central axis of the connecting tube are arranged in a staggered manner.

[0009] Preferably, an open groove communicating with the embedding groove is formed on the outer side of the connecting tube, and a sealing plate detachably connected to the embedding column is embedded in the open groove.

[0010] Preferably, the sealing plate is provided with a plurality of through holes, the embedded column is provided with a plurality of threaded holes coaxially arranged with the through holes, the threaded holes are threadedly connected with bolts penetrating the through holes, and the screw heads of the bolts are in contact with the sealing plate.

[0011] Preferably, the plurality of through holes and threaded holes are distributed in a rectangular array.

[0012] Preferably, the interference fit of the receiving column has a limiting ring, and the limiting ring is arranged to interfere with the connecting tube and the ring hole.

[0013] Preferably, the outer ring of the receiving column on one side protrudes outward to form a convex ring, and a sealing ring is embedded between the convex ring and the connecting tube.

[0014] The utility model has the following beneficial effects:

[0015] The utility model is convenient for operators to use torque wrenches or other tools to apply force to the bolts for disassembly and installation. This operation separates the bolts from the threaded holes, making it easier for the bolts to be pushed out. The operator can then insert a finger into the through hole for operation. The sealing plate can be removed by hand force combined with friction force. The embedded column and the eccentric ring block can be smoothly separated here. After that, the ring hole type can be replaced by simply removing the sealing ring and prying off the limit ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0018] Figure 3 It is a cross-sectional view of the utility model;

[0019] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0020] Figure 5 for Figure 4 The enlarged view of point D in the middle;

[0021] Figure 6 for Figure 3 Enlarged view of point C in the middle;

[0022] Figure 7 for Figure 6 Enlarged view of point E in the middle.

[0023] 1. Ring hole type; 101. Support column; 1011. Convex ring; 1012. Sealing ring; 102. Embedded column; 104. Threaded hole; 2. Connecting tube; 201. Embedded groove; 203. Eccentric ring groove; 204. Eccentric ring block; 3. Open groove; 4. Closing plate; 401. Bolt; 5. Limiting ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Disassembly device for ring hole type of seamless steel pipe cold rolling mill, such as Figure 1 and 3 As shown, it includes a connecting cylinder 2 for transmission connection with a cold rolling mill, and a ring hole type 1, both ends of the ring hole type 1 are integrally formed with receiving columns 101, and the end of the receiving column 101 away from the ring hole type 1 is integrally formed with an embedded column 102, and an embedded groove 201 for inserting the embedded column 102 is provided in the connecting cylinder 2, and the central axis of the embedded groove 201 is staggered with the central axis of the connecting cylinder 2. At the same time, the central axis of the connecting cylinder 2 is the same as the central axis of the ring hole type 1, and both are cylindrical, and the ring hole type 1, the receiving column 101, and the embedded column 102 form a stepped structure, as shown in FIG. Figure 5 and 7 As shown, the interference fit of the receiving column 101 has a limit ring 5, and the limit ring 5 is set in abutment with the connecting tube 2 and the ring hole type 1. The outer ring of the receiving column 101 on one side protrudes outward to form a circle of convex ring 1011, and a sealing ring 1012 is embedded between the convex ring 1011 and the connecting tube 2. An eccentric ring block 204 eccentrically set with it is integrally formed on the end face of the receiving column 101, and an eccentric ring groove 203 for accommodating the eccentric ring block 204 is opened on the connecting tube 2.

[0026] like Figure 2 and 4 As shown in Figures 6, an open groove 3 connected to the embedding groove 201 is provided on the outer side of the connecting tube 2, and a sealing plate 4 detachably connected to the embedding column 102 is embedded in the open groove 3. A plurality of through holes are provided on the sealing plate 4, and a plurality of threaded holes 104 coaxially arranged with the through holes are provided on the embedding column 102. Bolts 401 passing through the through holes are threadedly connected to the threaded holes 104, and the screw heads of the bolts 401 are in conflict with the sealing plate 4. The plurality of through holes and threaded holes 104 are distributed in a rectangular array.

[0027] When the utility model needs to be disassembled and installed, the operator applies force to the bolt 401 with the help of a torque wrench or other tools, so that the screw portion of the bolt 401 is loosened from the threaded hole 104, so that the bolt 401 is pushed out from the threaded hole 104 and the through hole, and then the operator inserts a finger into the through hole, and uses the force of the hand to drive the sealing plate 4 to leave the opening groove 3 by friction. At this time, the embedded column 102 and the eccentric ring block 204 will not be hindered, and they can be smoothly removed from the embedded groove 201 and the eccentric ring groove 203. To leave, you only need to further remove the sealing ring 1012, and then pry the limiting ring 5 off the receiving column 101 to replace a new ring hole type 1, and by pressurizing, put the old limiting ring 5 on the outer ring of the receiving column 101 on the new ring hole type 1, and then put on the sealing ring 1012, insert the eccentric ring block 204 into the eccentric ring groove 203, and insert the embedded column 102 into the embedded groove 201. Since the central axis of the embedded groove 201 is staggered with the central axis of the connecting tube 2, the transmission effect of the connecting tube 2 is In the process of the ring hole type 1 being driven by the force to rotate, even if the bolt 401 is broken, the embedded column 102 can still realize the force transmission in the embedded groove 201, instead of the friction and slipping in the coaxial setting state. In addition, the eccentric ring block 204 is embedded in the eccentric ring groove 203, which also strengthens the force transmission between the connecting tube 2 and the receiving seat. After the embedded column 102 is completely immersed in the embedded groove 201, it is necessary to keep the connecting tube 2 in a state of conflict with the receiving column 101, so that the threaded hole 104 and the through hole It can be coaxially arranged, and then the bolt 401 is passed through the through hole and threadedly connected to the threaded hole 104 to complete the installation of the ring hole type 1. In this process, the setting of the sealing ring 1012 makes it have a certain buffering effect when the limit ring and the connecting tube 2 collide, avoiding excessive rigid collision to damage the end face of the connecting tube 2, and the two sides of the limit ring 5 respectively contact the ring hole type 1 and the connecting tube 2, so that the bolt 401 can be subjected to the force in the tangential direction, so that it can remain bitten in the threaded hole 104 and is not easy to loosen and fall off.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A disassembly device for the ring pass of a seamless steel pipe cold rolling mill, characterized in that: The invention comprises a connecting cylinder (2) for connecting with a cold rolling mill transmission, and an annular hole (1), wherein both ends of the annular hole (1) are integrally formed with receiving columns (101), and an end of the receiving column (101) away from the annular hole (1) is integrally formed with an embedded column (102), an embedded groove (201) for inserting the embedded column (102) is provided in the connecting cylinder (2), and the annular hole (1), the receiving column (101), and the embedded column (102) form a stepped structure, an eccentric ring block (204) eccentrically arranged therewith is integrally formed on the end face of the receiving column (101), and an eccentric ring groove (203) for accommodating the eccentric ring block (204) is provided on the connecting cylinder (2).

2. The disassembly device for the ring pass of a seamless steel pipe cold rolling mill according to claim 1, characterized in that: The central axis of the embedding groove (201) and the central axis of the connecting tube (2) are arranged in a staggered manner.

3. The disassembly device for the ring pass of a seamless steel pipe cold rolling mill according to claim 1, characterized in that: An open groove (3) communicating with the embedding groove (201) is provided on the outer side of the connecting tube (2), and a sealing plate (4) detachably connected to the embedding column (102) is embedded in the open groove (3).

4. The disassembly device for the ring pass of a seamless steel pipe cold rolling mill according to claim 3, characterized in that: The sealing plate (4) is provided with a plurality of through holes, the embedded column (102) is provided with a plurality of threaded holes (104) coaxially arranged with the through holes, the threaded holes (104) are internally threadedly connected with bolts (401) passing through the through holes, and the screw heads of the bolts (401) are in contact with the sealing plate (4).

5. The disassembly device for the ring pass of a seamless steel pipe cold rolling mill according to claim 4, characterized in that: The plurality of through holes and threaded holes (104) are distributed in a rectangular array.

6. The disassembly device for the ring pass of a seamless steel pipe cold rolling mill according to claim 1, characterized in that: The receiving column (101) has an interference fit with a limit ring (5), and the limit ring (5) is arranged to abut against the connecting tube (2) and the ring hole (1).

7. The disassembly device for the ring pass of a seamless steel pipe cold rolling mill according to claim 6, characterized in that: The outer circle of the receiving column (101) on one side protrudes outward to form a convex ring (1011), and a sealing ring (1012) is embedded between the convex ring (1011) and the connecting tube (2).

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