Rough rolling vertical roll inlet guide table roller device of hot-rolled strip rolling mill

Abstract

The utility model discloses a hot rolled strip mill rough rolling vertical roll inlet guide table roller device, which comprises a lower guide table, a positioning steel plate, a lower shaft seat, an upper shaft seat and a roller, the lower guide table is provided with a notch, the positioning steel plate is arranged on the lower guide table, the lower shaft seat is welded on the positioning steel plate, the upper shaft seat is arranged on the lower shaft seat through a bolt, and the roller is arranged on the upper shaft seat through a bolt. And the roller is arranged between the lower shaft seat and the upper shaft seat and is positioned in the notch. The utility model relates to the field of hot-rolled plate production equipment design, in particular to a hot-rolled plate strip rolling mill rough rolling vertical roll inlet guide table roller device.

Description

Technical Field

[0001] The utility model relates to the field of hot-rolled plate production equipment design, in particular to a guide table roller device for an inlet of a rough rolling vertical roll of a hot-rolled plate and strip rolling mill. Background Art

[0002] The lower guide table at the entrance of the rough rolling vertical roll mill of the hot strip mill is installed in the middle of the vertical rolls, between the entrance frame rolls and the exit frame rolls, and is used to smoothly guide the strip head into the vertical roll mill and the subsequent flat roll mill.

[0003] At present, there are the following problems in the use of the entrance lower guide device:

[0004] 1. The entrance guide used in the current line is an integral steel frame structure made of thick steel plates. When the head and tail of the strip enter the rolling mill, the lower surface of the strip will inevitably come into contact and friction with the upper surface of the guide table. This friction is sliding friction. When rolling certain softer steel grades, the lower surface of the strip is very likely to come into contact with the upper surface of the guide table to produce sliding friction, resulting in scratches on the lower surface of the head or tail of the strip, which seriously affects the surface quality and yield rate of the strip.

[0005] 2. The upper surface of the guide table is easy to wear and requires a long replacement time. Utility Model Content

[0006] The technical problem to be solved by the utility model is that the steel head and tail are easily scratched and the surface of the guide table is easily worn.

[0007] In order to solve the above problems, the technical solution adopted by the utility model is as follows: The utility model is a guide table roller device for the entrance of the rough rolling vertical roll of a hot-rolled plate and strip rolling mill, comprising a lower guide table, a positioning steel plate, a lower shaft seat, an upper shaft seat and a roller, the lower guide table is provided with a notch, the positioning steel plate is arranged on the lower guide table, the lower shaft seat is welded on the positioning steel plate, the upper shaft seat is installed on the lower shaft seat by bolts, and the roller is installed between the lower shaft seat and the upper shaft seat and is located in the notch.

[0008] Furthermore, the positioning steel plates are symmetrically provided in multiple groups, the lower shaft seats and upper shaft seats are symmetrically provided in multiple groups, and the notches and rollers are provided in two groups.

[0009] Furthermore, the roller is made of alloy steel.

[0010] Furthermore, a water spray pipe is provided above the roller.

[0011] Preferably, the roller is an integral structural product with bearings, axles and a wheel body.

[0012] The beneficial effects achieved by the utility model using the above structure are as follows:

[0013] The contact between the lower surface of the strip and the surface of the guide table changes from sliding friction to rolling friction, and the friction mechanism undergoes a qualitative change; the positioning strip can make the roller device bear force well, and the roller bearing is designed to have a high load; the roller device is easy to replace as a whole. According to calculations, it takes no more than 30 minutes to replace the roller device once. On the premise of avoiding scratches on the surface of the strip, the production efficiency is improved and the subsequent processes are carried out smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the guide roller device for the roughing vertical roll entrance of the hot-rolled plate and strip rolling mill proposed by the utility model;

[0015] Figure 2 This is a structural schematic diagram of another angle of the guide roller device for the entrance of the rough rolling vertical roll of the hot-rolled plate and strip rolling mill proposed by the utility model.

[0016] Among them, 1. lower guide platform, 2. positioning steel plate, 3. lower shaft seat, 4. upper shaft seat, 5. roller, 6. notch. DETAILED DESCRIPTION

[0017] like Figure 1~Figure 2 As shown, the utility model is a guide table roller device for the entrance of the rough rolling vertical roll of a hot-rolled plate and strip rolling mill, comprising a lower guide table 1, a positioning steel plate 2, a lower shaft seat 3, an upper shaft seat 4 and a roller 5. The lower guide table 1 is provided with a notch 6, the positioning steel plate 2 is arranged on the lower guide table 1, the lower shaft seat 3 is welded on the positioning steel plate 2, the upper shaft seat 4 is installed on the lower shaft seat 3 by bolts, and the roller 5 is installed between the lower shaft seat 3 and the upper shaft seat 4 and is located in the notch 6.

[0018] There are multiple groups of positioning steel plates 2 symmetrically, multiple groups of lower shaft seats 3 and upper shaft seats 4 symmetrically, two groups of notches 6 and rollers 5, and rollers 5 are made of alloy steel, with surface heat treatment, and heat treatment hardness of HRC40 or above to increase the wear resistance of the rollers. The automatic dry oil lubrication of the roller 5 bearing is achieved through the lubricating oil channel in the middle of the roller shaft. A water spray pipe (not shown in the figure) is provided above the roller 5 to cool and clean the roller. A downward inclined chip removal groove is opened below the roller 5, and the oxidized iron scale can be flushed into the slag flushing groove below with the cooling water through the chip removal groove.

[0019] When in use, a slot 6 is opened at an appropriate position of the lower guide platform 1 at the entrance to make room for the installation of the roller 5. A chip groove is opened obliquely downward below the roller 5, and the oxidized iron scale can be washed into the slag groove below with the cooling water through the chip groove. The positioning steel plate 2 is fixed on the lower guide platform 1 at the entrance by welding. The positioning steel plate 2 also serves as a guide for the guide platform to prevent the head of the intermediate steel billet from hitting the roller 5, causing the roller 5 bearing to be damaged and ineffective. The lower shaft seat 3 is welded on the positioning steel plate 2, and the roller 5 is installed between the upper shaft seat 4 and the lower shaft seat 3.

[0020] When replacing the roller 5 device, loosen the bolts between the upper and lower shaft seats 3, remove the upper shaft seat 4, and the roller 5 device can be directly lifted out from above.

[0021] It should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A roller device for the roughing vertical roll entrance of a hot strip mill, characterized in that: It includes a lower guide platform, a positioning steel plate, a lower shaft seat, an upper shaft seat and a roller. The lower guide platform is provided with a slot. The positioning steel plate is arranged on the lower guide platform. The lower shaft seat is welded on the positioning steel plate. The upper shaft seat is installed on the lower shaft seat by bolts. The roller is installed between the lower shaft seat and the upper shaft seat and is located in the slot.

2. The hot strip mill roughing vertical roll inlet guide roller device according to claim 1, characterized in that: The positioning steel plates are symmetrically provided in multiple groups, the lower shaft seats and the upper shaft seats are symmetrically provided in multiple groups, and the notches and rollers are provided in two groups.

3. The hot strip mill roughing vertical roll inlet guide roller device according to claim 2, characterized in that: The roller is made of alloy steel.

4. The hot strip mill roughing vertical roll inlet guide roller device according to claim 3, characterized in that: A water spray pipe is arranged above the roller.

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