CN112588831A

CN112588831A - Equal-width rolling roller

Info

Publication number: CN112588831A
Application number: CN202011343574.0A
Authority: CN
Inventors: 陈宝气; 陆聪; 陈东荣; 马先富; 蔡国庆; 刘爽
Original assignee: Guangxi Liuzhou Iron and Steel Group Co Ltd
Current assignee: Guangxi Liuzhou Iron and Steel Group Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-04-02

Abstract

The invention discloses an equal-width rolling roller, which comprises a middle roller body and rollers with roller necks at two ends, wherein bearing seats are arranged at the roller necks of the rollers, inner end covers are arranged at the two ends of the bearing seats close to the inner sides of the roller bodies through bolts, a flexible arc-shaped bent distance ring with one end abutting against the roller bodies is arranged between each inner end cover and the roller necks of the rollers, an oil seal is arranged between one radial bent section of the distance ring and each inner end cover, a water seal is arranged between one radial bent section of the distance ring and each inner end cover, and the water seal is embedded in a groove of each inner end cover; under the condition that the distance between the bearing seats at the two ends is not changed, the axial width of the inner end cover is reduced, the axial width of the distance ring is reduced, and the length of the roller body of the roller is increased. Compared with the prior art, the invention can solve the problems that the existing cold rolling temper mill has limited roll body length and is not suitable for the production of multi-specification rolled steel.

Description

Equal-width rolling roller

Technical Field

The invention relates to the technical field of steel rolling steel plate production, in particular to an equal-width rolling roller for a cold rolling temper mill.

Background

The roll of the general cold rolling leveling unit comprises a working roll, a supporting roll and other rolls, the length of a roll body of the roll is limited, and the rolling width which can be met is limited, for example, a cold rolling 1250 leveling unit, two ends of the working roll, the supporting roll and other rolls are arranged on a machine body of the unit through bearing blocks at two ends, as shown in figures 1 and 2, one side of the roll close to an A end is connected with a transmission device, one side of the roll close to a B end is connected with an operating device, the roll comprises the roll body 1-1, L1=1250 mm and roll necks 1-2 at two ends, a bearing block 8 is arranged at the roll neck 1-2 of the roll, the distance between the centers of the bearing blocks at two ends of the roll is L2, L2=2240 mm, an inner end cover 3 is arranged at the inner side of the two bearing blocks 8 close to the roll body through bolts 2, a flexible arc-shaped bent distance ring 4 with one end abutting against the longitudinal surface of the shaft, a gland 6 is arranged between the radial bending section of the distance ring 4 and the inner end cover 3, an oil seal 7 is arranged between the radial bending section of the distance ring 4 and the inner end cover 3, a water seal 5 is arranged at the position of the gland 6 and the distance ring 4, the distance between the end surface of the inner end cover 3 connected with the bearing seat 8 and the end surface of one side of the inner end cover 3 close to the roller body is b1, namely the axial width of the inner end cover is b1, b1=118 mm, the distance between the two ends of the distance ring 4 is b2, namely the axial width of the distance ring is b2, b2=155 mm, and the length L1 of the roller body is 1250 mm at the moment, so that the rolling width is only 1000 mm. Along with market demands, the steel rolling specification rolled by the whole unit is single, the operation rate of the rolling mill is low, the rolling mill is not suitable for production demands, wide strip steel larger than 1000 mm cannot be produced, guarantee cannot be provided for more flexibly adjusting the product structure in cold rolling, and serious restriction is brought to production. Therefore, how to upgrade and change becomes very urgent and necessary.

Disclosure of Invention

The invention aims to solve the problem that the conventional cold rolling temper mill has a limited roller body and is not suitable for producing rolled steel with multiple specifications.

In order to solve the problems, the technical scheme of the invention is as follows: the equal-width rolling roller comprises a middle roller body and rollers with roller necks at two ends, wherein bearing seats are arranged at the roller necks of the rollers, inner end covers are arranged at the two ends of the bearing seats close to the inner sides of the roller bodies through bolts, a flexible arc-shaped bent distance ring with one end abutting against the roller bodies is arranged between each inner end cover and the roller necks of the rollers, an oil seal is arranged between one radial bent section of each distance ring and the inner end cover, a water seal is arranged between one radial bent section of each distance ring and the inner end cover, and the water seal is embedded in a groove of the inner end cover; under the condition that the distance between the bearing seats at the two ends is not changed, the axial width of the inner end cover is reduced, the axial width of the distance ring is reduced, and the length of the roller body of the roller is increased.

In the above technical solution, a more specific solution may be: the oil seal is a framework oil seal.

Further: the distance ring is made of 42CrMo material.

Further: the water seal is a V-shaped water seal made of a fluororubber material.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

the equal-width rolling roller has the advantages that the distance between the two bearing seats is unchanged, namely other equipment of a unit is not changed, only the original gland is removed, only the water seal is left, the water seal design is embedded in the groove of the inner end cover, the inner end cover with small size can be used, the width of the distance ring made of flexible materials is naturally and correspondingly reduced, the length of the roller body of the roller can be increased, the other equipment is unchanged, the input cost is low, the effect is obvious, the purchase benefit of the equipment is reduced by more than 1000 ten thousand yuan, after the device is put into use, the equal-width rolling production can be carried out, the device is suitable for the size change of various band steel, the market variety requirement is effectively solved, the production rhythm is improved, the guarantee is provided for adjusting the product structure, the risk that the edge part of the roller is concentrated and easy to fatigue and.

Drawings

FIG. 1 is a front view of the prior art;

FIG. 2 is an enlarged view at B of FIG. 1;

FIG. 3 is a front view of an embodiment of the present invention;

FIG. 4 is an enlarged view at D of FIG. 3;

the labels in the figure are: the roller comprises a roller 1, a roller body 1-1, a roller neck 1-2, a bolt 2, an inner end cover 3, a distance ring 4, a water seal 5, a pressure plate 6, an oil seal 7 and a bearing seat 8.

Detailed Description

The embodiments of the invention will be described in further detail with reference to the accompanying drawings:

taking a roll of a 1250 temper mill as an example, the constant-width rolling roll shown in fig. 3 and 4 comprises a roll body 1-1 and a roll 1 with a roll neck 1-2 at two ends, wherein the length of the roll body is L3, a bearing seat 8 is arranged at the roll neck 1-2 of the roll, the distance between the centers of the bearing seats at the two ends of the roll is L4, an inner end cover 3 is arranged at the inner side of the two bearing seats 8 close to the roll body through bolts 2, a flexible arc-shaped bent distance ring 4 with one end abutting against the longitudinal surface of a shaft shoulder of the roll body 1-1 is arranged between the inner end cover 3 and the roll neck 1-2 of the roll, an oil seal 7 is arranged between the bent radial section of the distance ring 4 and the inner end cover 3, the oil seal is a skeleton type oil seal, a water seal 5 is arranged between the bent radial section of the distance ring 4 and the inner end cover 3, the water seal 5 is embedded in a groove of the inner end cover 3, and the end face connected with the bearing seat, i.e. the axial width b3=78 mm of the inner end cap 3, the distance between the two ends of the distance ring 4 is b4, i.e. the axial width b4=115 mm of the distance ring 4, i.e. the distance L4 between the chock centers of the two ends of the roll is equal to the distance L2 between the chock centers of the two ends of the roll of the prior art, L4= L2=1250 mm, the axial width of the inner end cap 3 is reduced from b1 of the prior art to b3, i.e. 118 mm to 78 mm, the axial width of the distance ring 4 is also reduced from b2 of the prior art to b4, i.e. 155 mm to 115 mm, the length L3 of the roll body 1-1 can be increased from 1250 mm to 1350 mm of the prior art L1, L3= L1+ (b 2-b4) + (b 1-b3) +10 }. 2=1350, and equal width rolling is realized.

The distance ring 4 is made of 42CrMo material, so that the fixed distance between the bearing inner ring and the end part of the roller is ensured, and the play is prevented; and the oil seal 7 and the water seal 5 are matched with each other for sealing, so that foreign matters are prevented from entering. The water seal 5 is a V-shaped water seal made of fluororubber material, so that the matching sealing effect of the end part of the inner end cover 3 and the end part of the distance ring 4 is ensured, and foreign matters such as water are prevented from entering to influence the bearing lubrication. The inner end cover 3 is an integral inner end cover, the complexity of the inner end cover is optimized, the integral inner end cover is designed, and the oil seal 7 and the water seal 5 are directly designed on the groove and the concave part of the inner end cover, so that the thickness of the end cover is shortened, and the length of the roller body of the roller is prolonged.

The equal-width rolling roller has the advantages that the distance between two bearing seats 8 is unchanged, namely other equipment of a unit is not changed, only the original gland 6 is removed, only the water seal 5 is left, the water seal design is embedded in the groove of the inner end cover 3, namely, the inner end cover with small size can be used, the width of the distance ring 4 made of flexible material is naturally and correspondingly reduced, the length of the roller body of the roller can be increased, other equipment is unchanged, the investment cost is low, the effect is obvious, the purchasing benefit of the equipment can be reduced by more than 1000 ten thousand yuan, the equal-width rolling roller is put into a cold-rolled willow strip 1250 tandem mill and a 1250 temper mill, after the equal-width rolling roller is used, the equal-width rolling production can be carried out, the size change of strip steel in various forms is adapted, the market variety requirement is effectively solved, the production rhythm is improved, the guarantee is provided for adjusting the, the surface quality of the strip steel is improved.

Claims

1. The utility model provides an equal width rolling roller, includes the roll of middle roll body and both ends roll neck, the bearing frame is installed the roll neck department of roll, both ends the bearing frame is close to the inboard of roll body is installed the inner end cover through the bolt, the inner end cover with be equipped with between the roll neck one end support in the crooked distance ring of the flexible arc of roll body, the crooked radial one section of distance ring with be equipped with the oil blanket between the inner end cover, its characterized in that: a water seal is arranged between a section of the distance ring in the bending radial direction and the inner end cover, and the water seal is embedded in a groove of the inner end cover; under the condition that the distance between the bearing seats at the two ends is not changed, the axial width of the inner end cover is reduced, the axial width of the distance ring is reduced, and the length of the roller body of the roller is increased.

2. The equal-width rolling roll according to claim 1, characterized in that: the oil seal is a framework oil seal.

3. The equal-width rolling roll according to claim 1 or 2, characterized in that: the distance ring is made of 42CrMo material.

4. The equal-width rolling roll according to claim 3, characterized in that: the water seal is a V-shaped water seal made of a fluororubber material.