Roller box of finishing mill

Abstract

The utility model is suitable for the technical field of metallurgical equipment, and provides a roller box of a finishing mill. Comprising a box body; the roller shafts are rotationally arranged in the box body, one end of each roller shaft penetrates through an adjacent through hole in the side wall of the box body, and a step is arranged on each roller shaft; the inner sliding ring is arranged on one side of the step, the roller shaft is rotationally sleeved with the inner sliding ring, the side, close to the step, of the inner sliding ring abuts against the outer wall of the box body, the inner sliding ring covers the through hole, and the inner sliding ring seals the through hole; the outer slip ring abuts against one side, far away from the through hole, of the outer side of the inner slip ring, and the outer slip ring is arranged on the outer side of the roller shaft in a sleeving mode; an annular groove is formed in the inner side of the inner sliding ring, and a sealing ring is arranged in the annular groove. And a fixing mechanism for fixing the inner slip ring. According to the utility model, the annular groove is formed in the roller shaft, and the sealing ring is arranged in the annular groove, so that oil leakage is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a roller box for a finishing mill. Background Art

[0002] A finishing mill is a piece of equipment used in the metal rolling process to transform metal billets into finished products with precise dimensions and surface quality. Typically used in cold or hot rolling processes, finishing mills are capable of producing highly precise metal sheets, strips, tubes, wires, and more.

[0003] The main functions of the inner slip rings in finishing mills are to prevent oil leakage from the roll journals and to position the rolls (ensuring the roll's rolling centerline). Due to problems with the inner slip rings, significant amounts of lubricating oil can leak. Currently, the roll boxes in finishing mills rely on the precision of the fit between the inner slip rings and the shaft to prevent the lubricating oil in the oil film bearings from escaping from the mating surfaces between the inner slip rings and the roll shaft. Accidents such as steel blockage can cause the mill roll rings (rollers) to loosen, resulting in a loss of axial compression from the inner slip rings. This creates a large gap between the roll shaft and the inner slip rings due to relative motion and wear, disrupting the fit between the roll shaft, the inner slip ring, and the shaft, leading to frequent oil leaks. To address this technical issue, a finishing mill roll box is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a finishing mill roll box to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A finishing mill roll box, comprising: a box body;

[0007] Rotating a plurality of roller shafts disposed inside the box, one end of each roller shaft passing through adjacent through holes on the side wall of the box, and a step being disposed on the roller shaft;

[0008] An inner sliding ring is provided on one side of the step, the inner sliding ring is rotatably sleeved on the roller shaft, and the inner sliding ring is in contact with the outer wall of the box body on the side close to the step, and the inner sliding ring covers the through hole and seals the through hole;

[0009] The outer sliding ring is in contact with the outer sliding ring on the side of the inner sliding ring away from the through hole, and the outer sliding ring is sleeved on the outer side of the roller shaft; an annular groove is provided on the inner side of the inner sliding ring, and a sealing ring is provided inside the annular groove;

[0010] and a fixing mechanism for fixing the inner slip ring.

[0011] This solution provides an annular groove on the inner side of the inner sliding ring, a sealing ring is provided inside the annular groove, and the sealing ring is sleeved on the outer side of the roller shaft, thereby increasing the sealing effect and reducing the occurrence of oil leakage from the lubricating oil inside the box through the through hole during operation.

[0012] As a further solution of the present invention, the sealing ring is an O-type sealing ring. This arrangement is easy to implement and has a good sealing effect.

[0013] As a further solution of the present invention: the inner slip ring includes a first ring body and a second ring body, the second ring body is arranged at one end of the first ring body close to the box body, and the outer diameter of the second ring body is larger than that of the first ring body.

[0014] As a further solution of the present invention: the thickness of the second ring body is smaller than that of the first ring body.

[0015] As a further solution of the present invention: a chamfer is provided on the inner side of one end of the first ring body close to the second ring body.

[0016] As a further solution of the present invention: the annular groove is arranged inside the first ring body.

[0017] As a further solution of the present invention: the fixing mechanism includes a limiting ring, which is installed on the box body, and one side of the limiting ring abuts against the side of the outer sliding ring away from the through hole.

[0018] As a further solution of the present invention: the limiting ring is fixed on the box body by means of threads.

[0019] As a further solution of the present invention: the fixing mechanism further includes a locking ring, the locking ring abuts against the side of the limiting ring away from the outer sliding ring, and the locking ring is fixedly installed on the box body.

[0020] As a further solution of the present invention: the locking ring is fixedly mounted on the box body by bolts.

[0021] Compared with the prior art, the beneficial effect of the present invention is that an annular groove is provided on the inner side of the inner sliding ring, a sealing ring is provided inside the annular groove, and the sealing ring is sleeved on the outer side of the roller shaft, thereby increasing the sealing effect and reducing the occurrence of oil leakage from the lubricating oil inside the box through the through hole during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a finishing mill roll box in an embodiment of the present utility model.

[0023] Figure 2 This is a schematic structural diagram of an inner slip ring in a roller box of a finishing mill in an embodiment of the present utility model.

[0024] In the figure: 1-box, 2-roller shaft, 3-limiting ring, 4-inner sliding ring, 5-outer sliding ring, 6-locking ring, 11-through hole, 41-annular groove, 42-first ring body, 43-second ring body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1 、 Figure 2 As shown, Figure 1 This is a structural schematic diagram of a finishing mill roll box in an embodiment of the present utility model. Figure 2 This is a schematic diagram of the structure of an inner slip ring in a finishing mill roll box according to an embodiment of the present invention. The main functions of the inner slip ring in a finishing mill are, first, to prevent oil leakage from the roll neck and, second, to position the roll (to ensure the rolling centerline of the roll). Due to problems with the inner slip ring, a large amount of lubricating oil leaks. Currently, the roll boxes in finishing mills rely on the precision of the fit between the inner slip ring and the shaft to ensure that the lubricating oil in the oil film bearing does not leak from the mating surface between the inner slip ring and the roll shaft. Due to accidents such as steel blockage, the mill roll ring (roller) becomes loose, resulting in the loss of the axial clamping force of the inner slip ring. The relative motion between the roll shaft and the inner slip ring causes wear and tear, resulting in a large gap. This disrupts the fit between the roll shaft, the inner slip ring, and the shaft, leading to frequent oil leakage accidents. To address this technical problem, a finishing mill roll box is proposed.

[0027] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0028] Example 1

[0029] See also Figures 1 and 2, the utility model embodiment 1 provides a structural diagram of a finishing mill roll box, the finishing mill roll box, comprising: a box body 1, a plurality of roller shafts 2 are rotatably arranged inside the box body 1, one end of the roller shaft 2 is arranged through a through hole 11 on the side wall of the box body 1, a step is provided on the roller shaft 2, and an inner slip ring 4 is provided on one side of the step, the inner slip ring 4 is rotatably sleeved on the roller shaft 2, and the side of the inner slip ring 4 close to the step is in contact with the outer wall of the box body 1, the inner slip ring 4 covers the through hole 11, the inner The slip ring 4 seals the through hole 11. The outer side of the inner slip ring 4, away from the through hole 11, contacts the outer slip ring 5. The outer slip ring 5 is sleeved on the outer side of the roller shaft 2. The present invention also includes a fixing mechanism for fixing the inner slip ring 4. The inner side of the inner slip ring 4 is provided with an annular groove 41. The inner side of the annular groove 41 contains a sealing ring. The sealing ring is sleeved on the outer side of the roller shaft 2. This improves the sealing effect and reduces the occurrence of lubricating oil leakage from the box 1 through the through hole 11 during operation. The number of roller shafts 2 can be two or three.

[0030] The utility model provides an annular groove 41 inside the roller shaft 2 and a sealing ring inside the annular groove 41 , thereby eliminating oil leakage.

[0031] As a preferred embodiment of the present invention, the sealing ring may be an O-ring.

[0032] like Figure 2 As shown, as a preferred embodiment of the present invention, the inner slip ring 4 includes a first ring body 42 and a second ring body 43. The second ring body 43 is arranged at one end of the first ring body 42 close to the box body 1. The outer diameter of the second ring body 43 is larger than that of the first ring body 42, and the thickness of the second ring body 43 is smaller than that of the first ring body 42. The second ring body 43 is attached to the end wall of the box body 1 by setting it, so as to achieve sealing.

[0033] like Figure 2 As shown in FIG. 4 , as a preferred embodiment of the present invention, a chamfer is provided on the inner side of one end of the first ring body 42 close to the second ring body 43 , so as to facilitate installation.

[0034] As a preferred embodiment of the present invention, the annular groove 41 is provided inside the first ring body 42 .

[0035] As a preferred embodiment of the present invention, the fixing mechanism includes a limit ring 3, which is mounted on the box body 1. One side of the limit ring 3 abuts against the side of the outer slip ring 5 away from the through hole 11. In this way, the outer slip ring 5 is fixedly mounted on the box body 1.

[0036] As a preferred embodiment of the present invention, the limiting ring 3 is fixedly mounted on the box body 1 by screw threads. This arrangement is easy to implement.

[0037] As a preferred embodiment of the present invention, in order to be able to lock the limit ring 3, the fixing mechanism also includes a locking ring 6, which abuts against the side of the limit ring 3 away from the outer slip ring 5. The locking ring 6 is fixedly installed on the box body 1, thereby locking the position of the limit ring 3 and improving the stability of the installation of the inner slip ring 4 and the outer slip ring 5.

[0038] As a preferred embodiment of the present invention, the locking ring 6 can be fixedly mounted on the box body 1 by means of bolts.

[0039] For example, this utility model has been applied to a high-speed wire mill for metal products at Panzhihua Rail and Beam Plant. Through improvements, oil leaks caused by internal slip rings have been eliminated. This has reduced oil consumption by 20 barrels per year, eliminated 12 roll shafts, reduced 12 internal slip rings, and reduced maintenance labor costs by 360 man-hours, achieving significant economic benefits.

[0040] Direct benefits:

[0041] (1) Reduce spare parts (materials) consumption:

[0042] Roller shaft: 11,500 yuan / piece × 12 pieces = 138,000 yuan

[0043] Inner slip ring: 2000 yuan / piece × 12 pieces = 24000 yuan

[0044] Lubricating oil: 3,000 yuan / barrel × 20 barrels = 60,000 yuan

[0045] (2) Labor: 238 yuan / piece × 360 pieces = 79,680 yuan

[0046] Total annual profit: 247,600 yuan

[0047] Conclusion: (1) Reduced downtime and improved production efficiency. (2) Reduced spare parts and oil consumption. (3) Can be promoted in Panzhihua Iron and Steel and other units, with significant social effects.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0049] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A finishing mill roll box, characterized in that: include: Box (1); A plurality of roller shafts (2) are rotatably arranged inside the box body (1), one end of each roller shaft (2) being arranged through adjacent through holes (11) on the side wall of the box body (1), and a step being arranged on the roller shaft (2); An inner slip ring (4) is provided on one side of the step, the inner slip ring (4) is rotatably sleeved on the roller shaft (2), and the inner slip ring (4) contacts the outer wall of the box body (1) close to the step side, and the inner slip ring (4) covers the through hole (11), and the inner slip ring (4) seals the through hole (11); The outer sliding ring (5) is in contact with the outer side of the inner sliding ring (4) away from the through hole (11), and the outer sliding ring (5) is sleeved on the outer side of the roller shaft (2); an annular groove (41) is provided on the inner side of the inner sliding ring (4), and a sealing ring is provided inside the annular groove (41); and a fixing mechanism for fixing the inner slip ring (4).

2. A finishing mill roll box according to claim 1, characterized in that: The sealing ring is an O-type sealing ring.

3. The finishing mill roll box according to claim 1, characterized in that: The inner slip ring (4) comprises a first ring body (42) and a second ring body (43), wherein the second ring body (43) is arranged at one end of the first ring body (42) close to the box body (1), and the outer diameter of the second ring body (43) is larger than that of the first ring body (42).

4. A finishing mill roll box according to claim 3, characterized in that: The thickness of the second ring body (43) is smaller than that of the first ring body (42).

5. A finishing mill roll box according to claim 4, characterized in that: A chamfer is provided on the inner side of one end of the first ring body (42) close to the second ring body (43).

6. A finishing mill roll box according to claim 5, characterized in that: The annular groove (41) is arranged inside the first ring body (42).

7. The finishing mill roll box according to claim 1, characterized in that: The fixing mechanism comprises a limiting ring (3), which is mounted on the box body (1), and one side of the limiting ring (3) abuts against a side of the outer slip ring (5) away from the through hole (11).

8. A finishing mill roll box according to claim 7, characterized in that: The limiting ring (3) is fixedly mounted on the box body (1) via threads.

9. A finishing mill roll box according to claim 8, characterized in that: The fixing mechanism further comprises a locking ring (6), the locking ring (6) abutting against a side of the limiting ring (3) away from the outer slip ring (5), and the locking ring (6) is fixedly mounted on the box body (1).

10. A finishing mill roll box according to claim 9, characterized in that: The locking ring (6) is fixedly mounted on the box body (1) by means of bolts.

Images