Seamless steel pipe three-roller skew rolling sizing equipment

Abstract

The utility model discloses seamless steel tube three-roller skew rolling sizing equipment, which relates to the technical field of seamless steel tube three-roller skew rolling sizing and comprises a shell, a connecting frame is connected to the inner wall of the shell, a first skew roller is mounted on the inner side of the connecting frame, and a connecting shaft penetrates through the inner side of the first skew roller. And one side of the outer wall of the connecting shaft is sleeved with a second inclined roller. According to the seamless steel pipe sizing device, through the arrangement of the first inclined roller, the second inclined roller, the connecting shaft, the connecting frame, the shell and the like, people can adjust the position of the second inclined roller on the connecting shaft according to the length of a seamless steel pipe needing to be sized, and then the second inclined roller and the connecting shaft are fixed through the lantern ring and the first bolt; two sets of assemblies formed by the three first inclined rollers and the three second inclined rollers are located on the same horizontal line, and the seamless steel pipe is subjected to inclined rolling operation, so that the seamless steel pipe is not prone to being bent to a small degree, the workload of follow-up straightening operation is effectively reduced, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-roller oblique rolling and sizing of seamless steel pipes, in particular to a three-roller oblique rolling and sizing device for seamless steel pipes. Background Art

[0002] With the development of industrial technology and the progress of the times, the production process of seamless steel pipes is complicated. After the seamless steel pipes are quenched, they need to be rolled by oblique rollers to complete the sizing work. Therefore, they need to be completed by specific roller oblique rolling sizing equipment, and this type of equipment includes two-roller oblique rolling sizing equipment and three-roller oblique rolling sizing equipment.

[0003] The existing three-roller oblique rolling and sizing equipment for seamless steel pipes, during use, uses a group of components consisting of three oblique rollers to perform rolling and sizing operations on seamless steel pipes. Due to the high flexibility of the steel pipes after quenching, it is easy to cause a small degree of bending, which will increase the workload of subsequent straightening operations. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing three-roller oblique rolling and sizing equipment for seamless steel pipes uses a group of components consisting of three oblique rollers to perform rolling and sizing operations on seamless steel pipes during use. Due to the large flexibility of the steel pipes after quenching, a small degree of bending phenomenon is easily caused, which increases the workload of subsequent straightening operations. A three-roller oblique rolling and sizing equipment for seamless steel pipes is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A three-roller cross-rolling sizing device for seamless steel pipes, comprising:

[0007] A shell, the inner wall of the shell is connected to a connecting frame, and a first bevel roller is installed on the inner side of the connecting frame, a connecting shaft passes through the inner side of the first bevel roller, and a second bevel roller is sleeved on one side of the outer wall of the connecting shaft, a bearing is sleeved on the end of the connecting shaft, and a connecting piece is connected to the outer wall of the bearing, and the connecting piece is connected to the connecting frame through a second bolt, a steel pipe body is arranged inside the shell, and the outer wall of the steel pipe body abuts against the outer wall of the first bevel roller, a ring is connected to one end of the second bevel roller, and the ring is connected to the connecting shaft through a first bolt.

[0008] Preferably, a reserved groove is provided on the inner side of the connecting frame.

[0009] Preferably, the reserved groove and the connecting shaft are slidably connected, and the reserved groove and the connecting frame form an integrated structure through slotting.

[0010] Preferably, the inner wall of the second inclined roller is provided with a threaded area.

[0011] Preferably, the second oblique roller forms a movable structure with the connecting shaft through the threaded area, and the transverse axis of the second oblique roller coincides with the transverse axis of the first oblique roller.

[0012] Preferably, the bearing forms a detachable structure through a connecting plate, a second bolt and a connecting frame.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by arranging the first oblique roller, the second oblique roller, the connecting shaft, the connecting frame, the shell, etc., people can adjust the position of the second oblique roller on the connecting shaft according to the length of the seamless steel pipe of required diameter, and then complete the fixing work of the second oblique roller and the connecting shaft through the collar and the first bolt, so that there are two groups of components consisting of three first oblique rollers and three second oblique rollers, which are on the same horizontal line, and the seamless steel pipe is subjected to oblique rolling operation, so that the seamless steel pipe is not prone to small degree bending, which effectively reduces the workload of subsequent straightening operations and saves time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the distribution structure of the oblique rollers in the utility model;

[0017] Figure 3 It is a schematic diagram of the enlarged structure of point A in the utility model.

[0018] Legend:

[0019] 1. Shell; 2. First oblique roller; 3. Connecting frame; 4. Reserved groove; 5. Steel pipe body; 6. Connecting shaft; 7. Second oblique roller; 8. Threaded area; 9. Ring; 10. First bolt; 11. Bearing; 12. Connecting plate; 13. Second bolt. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-3A three-roller cross-rolling sizing device for seamless steel pipes comprises a housing 1, the inner wall of the housing 1 is connected with a connecting frame 3, and a first cross-roll 2 is installed on the inner side of the connecting frame 3, a connecting shaft 6 is passed through the inner side of the first cross-roll 2, and a second cross-roll 7 is sleeved on one side of the outer wall of the connecting shaft 6, a bearing 11 is sleeved on the end of the connecting shaft 6, and a connecting piece 12 is connected to the outer wall of the bearing 11, and the connecting piece 12 is connected to the connecting frame 3 through a second bolt 13, and the bearing 11 is connected to the connecting frame 3 through the connecting piece 12 and the second bolt 13. The housing 1 is a removable structure, the inner ring of the bearing 11 is connected to the connecting shaft 6, and the outer ring of the bearing 11 is connected to the connecting plate 12, so that the second bolt 13 can connect the connecting plate 12 with the connecting frame 3, thereby completing the positioning work between the connecting shaft 6 and the oblique rollers distributed outside thereof. The steel pipe body 5 is arranged inside the housing 1, and the outer wall of the steel pipe body 5 abuts against the outer wall of the first oblique roller 2. One end of the second oblique roller 7 is connected to a collar 9, and the collar 9 is connected to the connecting shaft 6 through a first bolt 10;

[0022] A reserved groove 4 is provided on the inner side of the connecting frame 3. Through the setting of the reserved groove 4, the inner side is convenient for passing the connecting shaft 6, so that the connecting shaft 6 can move up and down along the inner side of the reserved groove 4 to complete the adjustment work. The reserved groove 4 and the connecting shaft 6 are slidably connected, and the reserved groove 4 forms an integrated structure with the connecting frame 3 through the grooving. According to the diameter of the seamless steel pipe, people can adjust the position of the connecting shaft 6 in the reserved groove 4, so as to facilitate the adaptation of seamless steel pipes of more specifications for use. The inner wall of the second bevel roller 7 is provided with a threaded area 8. The second bevel roller 7 and the connecting shaft 6 form a moving structure through the threaded area 8, and the transverse axis of the second bevel roller 7 coincides with the transverse axis of the first bevel roller 2. According to the length of the seamless steel pipe to be sized, the position of the second bevel roller 7 on the connecting shaft 6 is adjusted, and the second bevel roller 7 is manually rotated to perform a threaded connection operation with the connecting shaft 6, and then the second bevel roller 7 and the connecting shaft 6 are fixed by the ring 9 and the first bolt 10.

[0023] Working principle: When in use, first, the staff can adjust the position of the connecting shaft 6 in the reserved groove 4 according to the diameter of the seamless steel pipe, so as to facilitate the adaptation of seamless steel pipes of more specifications for use, so that the connecting shaft 6 can move up and down along the inner side of the reserved groove 4 to complete the adjustment work. During this period, the bearing 11 moves up and down with the connecting shaft 6, and people use the second bolt 13 to connect the connecting plate 12 on the outside of the bearing 11 to the connecting frame 3, thereby completing the positioning work between the connecting shaft 6 and the oblique rollers distributed on its outside. Subsequently, people adjust the position of the second oblique roller 7 on the connecting shaft 6 according to the length of the seamless steel pipe to be sizing, and manually rotate the second oblique roller 7 to perform a threaded connection operation with the connecting shaft 6, and then complete the fixing work of the second oblique roller 7 and the connecting shaft 6 through the ring 9 and the first bolt 10. Finally, the steel pipe body 5 is transported to the inside of the device through the conveying device for roller oblique rolling sizing.

[0024] 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 three-roller cross-rolling sizing device for seamless steel pipes, comprising: A shell (1), characterized in that: the inner wall of the shell (1) is connected to a connecting frame (3), and a first inclined roller (2) is installed on the inner side of the connecting frame (3), a connecting shaft (6) passes through the inner side of the first inclined roller (2), and a second inclined roller (7) is sleeved on one side of the outer wall of the connecting shaft (6), a bearing (11) is sleeved on the end of the connecting shaft (6), and a connecting plate (12) is connected to the outer wall of the bearing (11), and the connecting plate (12) is connected to the connecting frame (3) through a second bolt (13), a steel pipe body (5) is arranged inside the shell (1), and the outer wall of the steel pipe body (5) abuts against the outer wall of the first inclined roller (2), one end of the second inclined roller (7) is connected to a collar (9), and the collar (9) is connected to the connecting shaft (6) through a first bolt (10).

2. The three-roller cross-rolling sizing equipment for seamless steel pipes according to claim 1, characterized in that: A reserved groove (4) is provided on the inner side of the connecting frame (3).

3. The three-roller cross-rolling sizing equipment for seamless steel pipes according to claim 2 is characterized in that: The reserved groove (4) and the connecting shaft (6) are slidably connected, and the reserved groove (4) forms an integrated structure with the connecting frame (3) through slotting.

4. The three-roller cross-rolling sizing equipment for seamless steel pipes according to claim 1, characterized in that: The inner wall of the second inclined roller (7) is provided with a threaded area (8).

5. The three-roller cross-rolling sizing equipment for seamless steel pipes according to claim 1, characterized in that: The second inclined roller (7) forms a movable structure with the connecting shaft (6) through the threaded area (8), and the transverse axis of the second inclined roller (7) coincides with the transverse axis of the first inclined roller (2).

6. The three-roller cross-rolling sizing equipment for seamless steel pipes according to claim 1, characterized in that: The bearing (11) forms a detachable structure through a connecting plate (12), a second bolt (13) and a connecting frame (3).

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