A bearing housing for the eccentric part of a single-high bar 330 roller box

Abstract

This utility model relates to the field of bearing housing technology and discloses an eccentrically mounted bearing housing for a 330mm single-bar roll box, aiming to solve problems such as large deviation in the clamping force of the bearing outer ring, large axial fluctuation of the roll shaft, and short service life of the roll box in the prior art. The bearing housing includes a first annular portion and a second annular portion fixedly connected. The first annular portion has a first sector-shaped area and a second sector-shaped area. The first sector-shaped area has nine circular holes evenly distributed, and the second sector-shaped area has two symmetrically opened U-shaped openings. Corresponding threaded holes are provided at corresponding positions on the second annular portion. This utility model, by optimizing the bearing housing structure design, increases the number of fixing points, making the force on the bearing outer ring more uniform, reducing the axial fluctuation of the roll shaft, improving product quality, extending the service life of the roll box, and reducing maintenance costs and production downtime.

Description

Technical Field

[0001] This utility model relates to the field of bearing housing technology, and in particular to a bearing housing mounted on the eccentric part of a single-high-bar 330 roller box. Background Technology

[0002] In existing technologies, due to the eccentric design of the roll box in single-high-strength bar mills, only nine M12*30 screws are used to position and tighten the bearing around the gland, leaving a 120° range without bolts. This results in a large deviation in the force applied to the outer ring of the bearing. If the outer ring of the bearing cannot bear force evenly, it will cause large axial fluctuations in the roll shaft, leading to problems such as substandard quality of finished steel bars. In severe cases, it can cause bearing damage, forcing the replacement of the roll box, which is time-consuming and labor-intensive each time. Furthermore, before the modification, the online service life of the roll box was short; large axial fluctuations in the roll shaft were detected every 3-6 months, requiring replacement of the roll box. This also led to decreased production efficiency and increased maintenance costs due to malfunctions. Therefore, an eccentric bearing housing for the 330 roll box of single-high-strength bar mills was developed. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide an eccentric bearing housing for a single-high bar 330 roll box, so as to solve the problems of uneven force on the outer ring of the bearing, large axial fluctuation of the roll shaft, and short service life of the roll box in the prior art.

[0004] To achieve the aforementioned objectives of this utility model, the technical solution adopted is as follows: A bearing housing for the eccentric part of a 330mm high-bar roller box includes a bearing housing body. The bearing housing body includes a first annular part and a second annular part that are fixedly connected. The first annular part is divided into a first sector area and a second sector area. Nine circular holes are installed at equal intervals on the first sector area. Two U-shaped openings are symmetrically opened on the second sector area. A first threaded hole is coaxially opened on the second annular part at the position corresponding to the circular holes, and a second threaded hole is opened at the position corresponding to the U-shaped opening.

[0005] As a further improvement of this utility model, the diameter of the second threaded hole is smaller than the diameter of the first threaded hole.

[0006] As a further improvement of this utility model, the included angle between the two U-shaped openings and the included angle between the U-shaped opening and the adjacent circular hole are both 40°, and the included angle between two adjacent circular holes is 30°.

[0007] As a further improvement of this utility model, the diameter of the first annular portion is larger than the diameter of the second annular portion.

[0008] As a further improvement of this utility model, a first shaft hole is provided in the middle of the first annular portion, and a second shaft hole is provided in the middle of the second annular portion.

[0009] As a further improvement of this utility model, the diameter of the first shaft hole is smaller than the diameter of the second shaft hole.

[0010] As a further improvement of this utility model, an annular reinforcing rib is embedded in the middle of the first annular portion.

[0011] The beneficial effects of this utility model are: 1. This utility model, by setting a first sector area and a second sector area in the first annular part, adds two U-shaped openings and corresponding second threaded holes on the basis of retaining the original nine circular holes, so that the distribution of fixing points is more uniform, and solves the problem of uneven force caused by the absence of bolts in the original 120° range, so that the outer ring of the bearing can be subjected to uniform force.

[0012] 2. By optimizing the hole angle distribution, the included angle between the two U-shaped openings and the included angle between the U-shaped opening and the adjacent circular hole are both 40°, and the included angle between two adjacent circular holes is 30°. This ensures the force balance in the entire circumferential direction, reduces the axial fluctuation of the roll shaft, and improves the quality of the finished steel bars.

[0013] 3. The annular reinforcing ribs embedded in the first annular part enhance the overall structural strength of the bearing housing, extend its service life, reduce the frequency of roller box replacement, and lower maintenance costs and production downtime.

[0014] 4. This utility model has a reasonable structural design, is easy to manufacture and install, and can be directly applied to the renovation of existing single-high bar 330 roller boxes and the production of new equipment. It has high practical value and promising prospects for promotion. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the second-view structure of the present invention; Figure 3 This is a schematic diagram of the structure in Embodiment 2 of this utility model.

[0016] In the figure: 1. Bearing housing body; 2. First annular portion; 3. Second annular portion; 4. First sector area; 5. Second sector area; 6. Circular hole; 7. U-shaped opening; 8. First threaded hole; 9. Second threaded hole; 10. First shaft hole; 11. Second shaft hole; 12. Annular reinforcing rib. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0019] Example 1 like Figures 1-2 As shown, a bearing housing for the eccentric part of a 330 single-bar roller box includes a bearing housing body 1. The bearing housing body 1 includes a first annular part 2 and a second annular part 3 that are fixedly connected. The diameter of the first annular part 2 is larger than the diameter of the second annular part 3, forming a stepped structure, which facilitates installation and positioning.

[0020] The first annular portion 2 is divided into a first sector area 4 and a second sector area 5. Nine circular holes 6 are installed at equal intervals on the first sector area 4, and the included angle between two adjacent circular holes 6 is 30°. Two U-shaped openings 7 are symmetrically opened on the second sector area 5. The included angle between the two U-shaped openings 7 and the included angle between the U-shaped opening 7 and the adjacent circular hole 6 are both 40°, making the distribution of fixed points on the entire circumference more uniform.

[0021] The second annular portion 3 is provided with a first threaded hole 8 at the position corresponding to the circular hole 6, and a second threaded hole 9 at the position corresponding to the U-shaped opening 7. The diameter of the second threaded hole 9 is smaller than the diameter of the first threaded hole 8, so that the appropriate bolt size can be selected according to the force requirements of different positions.

[0022] The first annular portion 2 has a first shaft hole 10 in the middle, and the second annular portion 3 has a second shaft hole 11 in the middle. The diameter of the first shaft hole 10 is smaller than the diameter of the second shaft hole 11, so as to adapt to shaft components of different diameters.

[0023] Example 2 Based on the structure of Embodiment 1, in Embodiment 2, an annular reinforcing rib 12 is embedded in the middle of the first annular portion 2, which enhances the overall structural strength of the bearing seat and improves its load-bearing capacity and service life.

[0024] In use, this utility model uses a bolt to fix the original position through the circular hole 6 and the first threaded hole 8. At the same time, it adds fixation in areas where there were no fixed points through the U-shaped opening 7 and the second threaded hole 9, making the bearing outer ring more uniformly stressed, effectively reducing the axial fluctuation of the roll shaft, improving product quality, and extending the service life of the roll box.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, component disassembly or combination, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bearing housing for the eccentric part of a 330mm high-bar roller box, comprising a bearing housing body, characterized in that: The bearing housing body includes a first annular portion and a second annular portion that are fixedly connected. The first annular portion is divided into a first sector area and a second sector area. Nine circular holes are installed at equal intervals on the first sector area. Two U-shaped openings are symmetrically opened on the second sector area. A first threaded hole is coaxially opened on the second annular portion at the position corresponding to the circular holes, and a second threaded hole is opened at the position corresponding to the U-shaped opening.

2. The bearing housing for the eccentric part of a single-high-bar 330 roller box according to claim 1, characterized in that: The diameter of the second threaded hole is smaller than the diameter of the first threaded hole.

3. The bearing housing for the eccentric part of a single-high bar 330 roller box according to claim 1, characterized in that: The included angle between the two U-shaped openings and the included angle between the U-shaped opening and the adjacent circular hole are both 40°, and the included angle between two adjacent circular holes is 30°.

4. The bearing housing for the eccentric part of a single-high bar 330 roller box according to claim 1, characterized in that: The diameter of the first annular portion is larger than the diameter of the second annular portion.

5. A bearing housing for the eccentric part of a single-high bar 330 roller box according to claim 1, characterized in that: The first annular portion has a first shaft hole in its middle, and the second annular portion has a second shaft hole in its middle.

6. A bearing housing for the eccentric part of a single-high bar 330 roller box according to claim 5, characterized in that: The diameter of the first shaft hole is smaller than the diameter of the second shaft hole.

7. A bearing housing for the eccentric part of a single-high-bar 330 roller box according to claim 1, characterized in that: The first annular portion has an embedded annular reinforcing rib in the middle.

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