CN215467053U

CN215467053U - Vertical strip mill stand

Info

Publication number: CN215467053U
Application number: CN202121163382.1U
Authority: CN
Inventors: 郭园; 李军
Original assignee: Nanjing Iron and Steel Co Ltd
Current assignee: Nanjing Iron and Steel Co Ltd
Priority date: 2021-05-27
Filing date: 2021-05-27
Publication date: 2022-01-11
Anticipated expiration: 2031-05-27

Abstract

The utility model discloses a vertical strip steel rolling mill frame which comprises a gap bridge arranged between two vertical rolls, wherein a button head guide surface is formed on the upper surface of the gap bridge, and the button head of a steel strip is gradually jacked upwards and guided into a vertical roll hole pattern by the button head guide surface along the advancing direction of the steel strip. The gap bridge is arranged between the two vertical rolls, and the buckle head of the advancing steel strip is pushed up by the buckle head guide surface of the gap bridge to smoothly enter the vertical roll pass, so that the difficulty in biting the vertical roll pass caused by the buckle head of the steel strip is avoided. Saves the time for shearing the steel belt buckle head and processing the waste, and improves the yield of the steel belt.

Description

Vertical strip mill stand

Technical Field

The utility model relates to strip steel rolling equipment, in particular to a strip steel vertical rolling mill frame.

Background

When the strip steel is normally produced, the strip steel enters the vertical roll pass from rough rolling in a straight state in a normal state. However, the head of the steel strip rolled by the roughing mill bends downward due to rough rolling adjustment or the like, and is generally called a buckle. The steel belt of the buckle head is difficult to feed into the vertical roll hole pattern, even the head of the steel belt directly impacts the roll collar of the vertical roll, thereby changing the running direction of the steel belt and generating waste.

Specifically, the steel belt buckle can cause the following two situations to happen:

1. the steel belt buckle head causes difficulty in gripping the vertical roll hole pattern, the steel belt needs to be withdrawn to the vertical shear, and the steel belt buckle head is sheared off and then enters the vertical roll again for rolling. Under the condition, the buckle head part is manually cut off, so that the production rhythm is disturbed, the halt delay time is prolonged, and the yield of the steel belt is reduced.

2. The steel strip is buckled and the roll collar of the vertical roll is smashed, so that the steel strip changes the advancing direction and enters the lower part of the vertical roll mill to generate waste, and the waste in treatment not only increases the shutdown delay time, but also reduces the yield of the steel strip.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects of the prior art, the utility model provides the strip steel vertical rolling mill frame which can ensure that the head of a steel strip can smoothly enter a vertical roll pass.

The technical scheme is as follows: the utility model relates to a vertical strip steel rolling mill frame which comprises a gap bridge arranged between two vertical rolls, wherein a button head guide surface is formed on the upper surface of the gap bridge, and the button head of a steel strip is gradually jacked upwards and guided into a vertical roll hole pattern by the button head guide surface along the advancing direction of the steel strip.

Wherein, the button head guide surface comprises an uphill guide surface which is obliquely arranged upwards along the advancing direction of the steel strip and a horizontal guide surface which is connected with the top end of the uphill guide surface. The uphill guide surface is a slope extending upwards in an inclined mode, when the steel strip moves forwards at the position, the buckle head of the steel strip is jacked upwards by the uphill guide surface while moving forwards, then the steel strip is transited to the horizontal guide surface to move horizontally, and the steel strip enters the vertical roll hole type.

Specifically, the horizontal guide surface is flush with the lower edge of the vertical roll hole type. So that the button head can directly and smoothly enter the vertical roll hole pattern.

In one embodiment of the utility model, the strip mill stand further comprises a plurality of tie rods, and the two vertical rolls are connected through the tie rods. Whereby the draw bar positions the two vertical rolls to form the main part of the frame.

In one embodiment of the utility model, the bridge is fixed to the tie rod.

In one embodiment of the utility model, a clamping groove is arranged at the lower part of the gap bridge and clamped on the pull rod through the clamping groove. Thereby facilitating installation and removal.

Has the advantages that: the gap bridge is arranged between the two vertical rolls, and the buckle head of the advancing steel strip is pushed up by the buckle head guide surface of the gap bridge to smoothly enter the vertical roll pass, so that the difficulty in biting the vertical roll pass caused by the buckle head of the steel strip is avoided. Saves the time for shearing the steel belt buckle head and processing the waste, and improves the yield of the steel belt.

Drawings

FIG. 1 is a schematic view of the structure of the vertical strip mill stand as viewed in the horizontal direction;

FIG. 2 is a schematic view of the vertical strip mill stand viewed horizontally at another angle;

FIG. 3 is a schematic view of the vertical strip mill stand viewed obliquely below;

FIG. 4 is a schematic perspective view of a bridge;

FIG. 5 is a front view of the bridge;

fig. 6 is a left side view of the bridge of fig. 5.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

It should be noted that the vertical rolling mill stand with steel strip in the embodiment is obtained by improving the existing vertical rolling mill stand with short stress.

Specifically, referring to fig. 1-3, two vertical rolls 1 of the vertical strip mill stand are connected by two pull rods 3, respectively, so that the roll collars of the two vertical rolls 1 are combined into a vertical roll pass. In use, the stand is assembled in front of a rolling mill. In order to solve the problem of difficult vertical roll hole type engagement caused by a steel belt buckle head, the utility model arranges a gap bridge 2 between two vertical rolls 1.

Referring to fig. 4-6, in the present embodiment, the bridge 2 is an arch bridge frame made by cutting, bending and welding steel plates, and has a substantially symmetrical structure. The upper surface is the button head guide surface of the utility model, and the steel plate is cut and bent into the shape as shown in the figure, so that the ascending guide surface 21 and the horizontal guide surface 22 are smoothly connected and transited. Symmetrical arch doors are cut on the two side wall steel plates, and the distance between the two arch doors is consistent with the distance between the two pull rods 3 at the lower part. After being welded into a whole, the two arch doors form clamping grooves 23 respectively and can be directly clamped and fixed on the two pull rods 3 at the lower part.

When the bridge 2 is placed directly on the tie rod 3, the horizontal guide surface 22 is flush with the lower edge of the vertical roll pass. Therefore, during rolling, the button head of the steel strip can be pushed upwards by the ascending guide surface 21 and is guided by the horizontal guide surface 22 to enter the vertical roll pass smoothly. After the rolling mill is disassembled after the frame is used, the gap bridge 2 can be directly taken down, and the gap bridge is extremely convenient to assemble and disassemble.

Of course, in other embodiments, the gap bridge 2 may be configured in other shapes as long as it has a button head guide surface to guide the steel strip button head to the vertical roll pass, and the installation and fixation manner is adjusted according to the arrangement requirement of the actual rolling mill, for example, a bracket may be additionally provided to support, or the gap bridge may be connected to the pull rod 3 by other connection manners.

Claims

1. The vertical strip mill stand is characterized by comprising a gap bridge (2) arranged between two vertical rolls (1), wherein a button head guide surface is formed on the upper surface of the gap bridge (2), and the button head of a steel strip is gradually jacked upwards and guided into a vertical roll pass by the button head guide surface along the advancing direction of the steel strip.

2. The vertical strip mill stand according to claim 1, characterized in that the button head guide surface comprises an uphill guide surface (21) arranged obliquely upward in the advancing direction of the strip and a horizontal guide surface (22) connected to the top end of the uphill guide surface (21).

3. The vertical strip mill stand according to claim 2, characterized in that the horizontal guide surfaces (22) are flush with the lower edges of the vertical roll pass.

4. The vertical strip mill stand according to claim 1, characterized in that it further comprises a plurality of tie rods (3), the two vertical rolls (1) being connected by said tie rods (3).

5. The vertical strip mill stand according to claim 4, characterized in that the gap bridge (2) is fixed to the tie rod (3).

6. The vertical strip mill stand according to claim 4, characterized in that the lower part of the bridge (2) is provided with a slot (23) and is clamped on the pull rod (3) through the slot (23).