High-speed steel roller

Abstract

The high-speed steel roller comprises a roller body and a sealing ring, the inner edge of the sealing ring is tightly attached to the outer wall of a roller neck of the roller body and fixedly connected to the roller neck of the roller body, the inner edge of the sealing ring is lower than the outer edge of the sealing ring, a flat face is arranged between the bottom of the inner edge of the sealing ring and the bottom of the outer edge of the sealing ring, and a labyrinth ring is connected to the inner edge of the sealing ring. The thickness of the labyrinth ring is smaller than that of the inner edge of the sealing ring, the outer wall of the labyrinth ring and the upper end face of the inner edge form a first step face, the upper end of the labyrinth ring is provided with a second step face, the upper end face of the second step face is provided with a plurality of evenly-distributed arc-shaped grooves, and the straight face of the sealing ring is provided with an annular water seal groove and an annular oil seal groove which are coaxial. The radius of the annular water seal groove is smaller than that of the annular oil seal groove, and the depth of the annular water seal groove is smaller than that of the annular oil seal groove. The roller and the labyrinth ring are integrally arranged, and the roller is effectively prevented from being broken due to labyrinth rotation in the operation process of the rolling mill, so that the service life of the roller is prolonged, and the roller breaking accident caused by serious rotation abrasion is basically eradicated.

Description

Technical Field

[0001] The utility model belongs to the technical field of iron and steel metallurgy, in particular to a high-speed steel roller. Background Art

[0002] During the use of the rolling mill rolls, there are many additional spare parts for the rolls, the gap is large, and the mechanical sealing of the roll structure is poor, which makes it easy for the rolls to break, and the rolls and the labyrinth to separate and rotate and slip, affecting the utilization rate and operation rate. Chinese utility model CN205089830U discloses a sealing assembly of a roll and a bearing, which includes a bearing, a roll, a sealing gland, a labyrinth ring and a skeleton seal; wherein the roll is supported on a bearing, and a labyrinth groove is provided on it; the bearing includes an outer ring, and one end of the sealing gland is connected to the outer ring of the bearing; the labyrinth ring is integrally arranged on the sealing gland and inserted into the labyrinth groove; the skeleton seal is arranged between the sealing gland and the roll. The sealing assembly of the roll and the bearing adopts a labyrinth ring seal to prevent the intrusion of water and iron sheets. The above-mentioned device has a large clearance between the roll and the labyrinth, and a small amount of oil, water and dust still enter the labyrinth between the rolls, resulting in low efficiency of the rolls, serious waste, increased costs, and a short operation cycle of the online rolling mill, and labyrinth rotation and roll breakage events are prone to occur. Summary of the invention

[0003] The technical problem solved by the utility model is that during the use of the rolling mill rolls, the additional spare parts of the rolls increase and the gaps are large, the mechanical sealing of the roll structure is poor, the rolls are easily broken, and the rolls separate from the maze and rotate and slip, which affects the utilization rate and operation rate.

[0004] The utility model provides a high-speed steel rolling roller, characterized in that it comprises a rolling roller and a sealing ring, the inner edge of the sealing ring is tightly attached to the outer wall of the rolling roller neck and is fixedly connected to the rolling roller neck, the inner edge height of the sealing ring is lower than the outer edge, the bottom of the inner edge of the sealing ring and the bottom of the outer edge are flat surfaces, a labyrinth ring is connected to the inner edge of the sealing ring, the thickness of the labyrinth ring is less than the thickness of the inner edge of the sealing ring, the outer wall of the labyrinth ring and the upper end surface of the inner edge form a first step surface, the upper end of the labyrinth ring is provided with a second step surface, the upper end surface of the second step surface is provided with a plurality of evenly distributed arc grooves, a coaxial annular water seal groove and annular oil seal groove are provided on the flat surface of the sealing ring, the radius of the annular water seal groove is smaller than that of the annular oil seal groove, and the depth of the annular water seal groove is smaller than the depth of the annular oil seal groove.

[0005] The depth of the annular water seal groove is 10 mm and the width is 12 mm.

[0006] The depth of the annular oil seal groove is 20 mm.

[0007] The highest point of the sealing ring is 49 mm above the outer edge.

[0008] There are four arc-shaped grooves.

[0009] The depth of the arc-shaped groove is the same as the height of the second step surface.

[0010] The sealing ring is fixed to the roll neck by welding.

[0011] The utility model has the following beneficial effects. The roller and the labyrinth ring are arranged in one piece, which effectively prevents the labyrinth from self-rotating and breaking the roller during the operation of the rolling mill, thereby extending the service life of the roller, eliminating the gap between the roller and the labyrinth, improving the operating rate, reducing the rolling cost, further reducing the roller diameter and the labyrinth pollution, greatly extending the online use period of the high-speed steel roller labyrinth, and basically eliminating the roller breakage accident caused by severe self-rotation wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 , schematic diagram of the high-speed steel roller sealing ring of the utility model. DETAILED DESCRIPTION

[0013] In order to clearly illustrate the technical features of this solution, the solution is described below through specific implementation methods and in combination with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the utility model.

[0014] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, 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 on the present invention.

[0015] A high-speed steel roller comprises a roller and a sealing ring, wherein the inner edge 1 of the sealing ring is in close contact with the outer wall of the roller neck and is fixedly connected to the roller neck. In this embodiment, the sealing ring is welded to the roller neck. The inner edge 1 of the sealing ring is lower than the outer edge 2, and a flat surface is formed between the bottom of the inner edge 1 of the sealing ring and the bottom of the outer edge 2. A labyrinth ring 3 is connected to the inner edge 1 of the sealing ring, and the thickness of the labyrinth ring 3 is less than the thickness of the inner edge 1 of the sealing ring. The outer wall of the labyrinth ring 3 and the upper end face of the inner edge 1 form a first step surface 7, and a second step surface 8 is provided at the upper end of the labyrinth ring 3. The upper end face of the second step surface 8 is provided with a plurality of evenly distributed arc grooves 6. In this embodiment, four arc grooves 6 are provided, and the depth of the arc groove 6 is the same as the height of the second step surface 8. In this embodiment, the highest point of the sealing ring is 49 mm higher than the outer edge. The straight surface of the sealing ring is provided with a coaxial annular water seal groove 4 and an annular oil seal groove 5, the radius of the annular water seal groove 4 is smaller than that of the annular oil seal groove 5, and the depth of the annular water seal groove 4 is smaller than that of the annular oil seal groove 5. In this embodiment, the depth of the annular water seal groove 4 is 10 mm, the width is 12 mm, and the depth of the annular oil seal groove 5 is 20 mm. The roller and the labyrinth ring 3 of the utility model are arranged in one piece, which effectively prevents the roller from breaking due to the self-rotation of the labyrinth during the operation of the rolling mill, thereby extending the service life of the roller and basically preventing the roller from breaking due to severe self-rotation wear.

[0016] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0017] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A high speed steel roll, characterized in that: Including rollers and sealing rings, The inner edge of the sealing ring is in close contact with the outer wall of the roller neck and is fixedly connected to the roller neck. The inner edge height of the sealing ring is lower than the outer edge, and there is a flat surface between the bottom of the inner edge and the bottom of the outer edge of the sealing ring. A labyrinth ring is connected to the inner edge of the sealing ring, and the thickness of the labyrinth ring is less than the thickness of the inner edge of the sealing ring. The outer wall of the labyrinth ring and the upper end surface of the inner edge form a first step surface, and a second step surface is provided at the upper end of the labyrinth ring. A plurality of evenly distributed arc grooves are provided on the upper end surface of the second step surface. Coaxial annular water seal grooves and annular oil seal grooves are provided on the flat surface of the sealing ring, the radius of the annular water seal groove is smaller than that of the annular oil seal groove, and the depth of the annular water seal groove is less than the depth of the annular oil seal groove.

2. The high speed steel roll according to claim 1, characterized in that: The annular water seal groove has a depth of 10 mm and a width of 12 mm.

3. The high speed steel roll according to claim 1, characterized in that: The depth of the annular oil seal groove is 20 mm.

4. The high speed steel roll according to claim 1, characterized in that: The highest point of the sealing ring is 49 mm above the outer edge.

5. The high speed steel roll according to claim 1, characterized in that: There are four arc-shaped grooves.

6. The high speed steel roll according to claim 1, characterized in that: The depth of the arc-shaped groove is the same as the height of the second step surface.

7. The high speed steel roll according to claim 1, characterized in that: The sealing ring is welded to the roll neck.

Images