CN218890999U

CN218890999U - Front and rear door roller of twenty high rolling mill

Info

Publication number: CN218890999U
Application number: CN202222830761.2U
Authority: CN
Inventors: 王生; 赵轩; 杨祥明
Original assignee: Anhui Xinke Copper Co Ltd
Current assignee: Anhui Xinke Copper Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-21
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a twenty-high rolling mill front and rear door roller, which relates to the technical field of roller mounting equipment and comprises a bracket, a mandrel and rollers, wherein the mandrel is connected with the bracket, the bracket is provided with a mounting groove for mounting the rollers, the rollers are sleeved on the mandrel, the mandrel is provided with a cylindrical roller bearing, the rollers are connected with the outer ring of the cylindrical roller bearing, the inner ring of the cylindrical roller bearing is connected with the mandrel, and two sides of the cylindrical roller bearing are provided with gaskets. The cylindrical roller bearing bears radial force and rotation torque transmitted by the working roller of the rolling mill, and when the cylindrical roller bearing rotates, the contact area of the roller, the outer ring and the inner ring is large, so that the loss of the bearing after receiving the radial force is reduced, and the service life of the roller is prolonged.

Description

Front and rear door roller of twenty high rolling mill

Technical Field

The utility model relates to the technical field of roller mounting equipment, in particular to a front and rear door roller of a twenty-high rolling mill.

Background

The twenty-high rolling mill is the main equipment for rolling and producing thin strips, the diameter of the working roll surface is 52mm, the rolling production speed is generally 200m/min, and the working rolls rotating at high speed drive the rollers at the two side ends of the front door and the rear door to rotate during production. The two rollers mainly stabilize the working roller on the rolling center line to prevent the axial movement of the working roller.

Referring to fig. 3 and 4, the existing roller is vertically installed and used, the upper end and the lower end of the needle bearing 8 in the bracket are limited and supported by the copper sheet 9, the mandrel with the diameter of only 30mm is an external processing piece, the processing technical requirement of the mandrel is very high, the processing cost is higher, but because the contact surface of the mandrel and the needle in the bearing is very small, lubricating oil is less limited by the structure, so that the bearing lubrication condition is poor, the shaft surface is very easy to be worn to generate peeling pits, the copper sheet 9 at the upper end and the lower end also forms certain resistance to the rotation of the roller, the copper sheet 9 is also very easy to be worn and thinned, the upper gap and the lower gap of the roller on the bracket are gradually increased, the roller moves up and down due to different stress during production, the bearing in the roller is further affected, and the other roller bracket is also worn due to the rotation of the copper sheet 9.

Disclosure of Invention

In order to solve one of the technical problems, the utility model provides the front and rear door rollers of the twenty-high rolling mill, radial force and rotation torque transmitted by working rollers of the rolling mill are born by the cylindrical roller bearings, and the contact area of the rollers, the outer ring and the inner ring is large, so that the loss of the bearings after the radial force is received is reduced, and the service life of the rollers is prolonged.

In order to achieve the above purpose, the technical scheme adopted by the utility model for solving the technical problems is as follows: the twenty-high rolling mill front and back door roller comprises a bracket, a mandrel and rollers, wherein the mandrel is connected with the bracket, the bracket is provided with a mounting groove for mounting the rollers, the rollers are sleeved on the mandrel, cylindrical roller bearings are arranged on the mandrel, the rollers are connected with the outer rings of the cylindrical roller bearings, the inner rings of the cylindrical roller bearings are connected with the mandrel, and gaskets are arranged on the two sides of the cylindrical roller bearings.

As still further aspects of the present utility model, the gasket is a steel sheet.

As a still further aspect of the present utility model, the inner diameter of the steel sheet is adapted to the outer diameter of the mandrel, and the outer diameter of the steel sheet is smaller than the outer diameter of the inner ring of the cylindrical roller bearing.

As still further aspects of the present utility model, one side of the steel sheet abuts against a groove wall of the mounting groove, and the other side of the steel sheet abuts against an inner ring end face of the cylindrical roller bearing.

As a still further scheme of the utility model, the number of the cylindrical roller bearings is two, and the two cylindrical roller bearings are sleeved on the mandrel in parallel.

As a still further proposal of the utility model, the end surfaces of the two cylindrical roller bearings which are far away from each other are respectively provided with a steel sheet which is abutted with the groove wall of the mounting groove, and the sum of the thickness of the two cylindrical roller bearings and the thickness of the two steel sheets is equal to the thickness of the mounting groove.

As a still further proposal of the utility model, the mandrel is provided with a fixed jackscrew, and the bracket is provided with a fixed bolt.

The beneficial effects of the utility model are as follows:

the cylindrical roller bearing bears radial force and rotation torque transmitted by the working roller of the rolling mill, and when the cylindrical roller bearing rotates, the contact area of the roller, the outer ring and the inner ring is large, so that the loss of the bearing after receiving the radial force is reduced, and the service life of the roller is prolonged; the external diameter of steel sheet is less than the external diameter of cylindrical roller bearing's inner circle to prevent the steel sheet and the outer lane contact of pivoted cylindrical tube bearing, the steel sheet is not rotated along with the outer lane, prevents the steel sheet wearing and tearing attenuation, thereby prevents the gyro wheel not hard up in the use, and the steel sheet does not seal the intermediate position of outer lane and inner circle, in the cylindrical roller bearing of the lubricating oil entering openness of being convenient for, make cylindrical roller bearing lubricate fully, cylindrical roller bearing is difficult for wearing and tearing.

Drawings

FIG. 1 is a schematic cross-sectional view of the front and rear gate rollers of the twenty-high rolling mill of the present utility model.

Fig. 2 is a schematic view of another view cross-section structure of fig. 1.

Fig. 3 is a schematic cross-sectional view of a prior art twenty-high rolling mill front and rear door roller.

Fig. 4 is a schematic view of another view cross-section structure of fig. 3.

In the accompanying drawings: the steel sheet steel rolling device comprises a 1-bracket, a 2-roller body, a 3-mandrel, a 4-cylindrical roller bearing, a 5-steel sheet, a 6-fixed jackscrew, a 7-fixed bolt, an 8-needle roller bearing and a 9-copper sheet.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Specific implementations of the utility model are described in detail below in connection with specific embodiments.

As shown in figure 1, the twenty-high rolling mill front and back door roller comprises a bracket 1, a mandrel 3 and a roller 2, wherein the mandrel 3 is connected with the bracket 1, a mounting groove 10 for mounting the roller 2 is formed in the bracket 1, the roller 2 is sleeved on the mandrel 3, a cylindrical roller bearing 4 is arranged on the mandrel 3, the roller 2 is tightly matched with the outer ring of the cylindrical roller bearing 4, the inner ring of the cylindrical roller bearing 4 is connected with the mandrel 3, and when the roller 2 rotates, the outer ring and the inner ring of the cylindrical roller bearing 4 connected with the roller 2 relatively rotate, so that rotation between the roller 2 and the mandrel 3 is realized, gaskets are arranged on two sides of the cylindrical roller bearing 4, and the roller 2 is limited in the mounting groove 10 and used for adjusting gaps through the arrangement of the gaskets.

During the use, support 1 installs on the rolling mill, and gyro wheel 2 on the support 1 is stable the work roll on rolling center line, prevents its axial float, and gyro wheel 2 rotates along with the work roll to the outer lane and the inner circle of the cylindrical roller bearing 4 that is connected with gyro wheel 2 rotate relatively, and then take place relative rotation between gyro wheel 2 and the dabber 3, bear radial force and the rotatory moment of torsion that the rolling mill work roll transmitted through cylindrical roller bearing 4, and during the rotation of cylindrical roller bearing 4, roller and outer lane, inner circle area of contact are big, thereby reduce the loss after bearing 4 received radial force, increase gyro wheel 2's life.

Specifically, referring to fig. 1, the gasket is a steel sheet 5, and the steel gasket has high rigidity and good wear resistance, so that the service life of the whole roller is prolonged.

Referring to fig. 1 and 2, the inner diameter of the steel sheet 5 is matched with the outer diameter of the mandrel 3, the steel sheet 5 is ensured to be sleeved on the mandrel 3, the outer diameter of the steel sheet 5 is smaller than the outer diameter of the inner ring of the cylindrical roller bearing 4, so that the steel sheet 5 is prevented from contacting with the outer ring of the cylindrical tube bearing 4 which rotates, the steel sheet 5 is prevented from being worn and thinned along with the outer ring when the steel sheet 5 is used for limiting, the roller 2 is prevented from loosening in the using process, the steel sheet 5 does not seal the middle position of the outer ring and the inner ring, lubricating oil is convenient to enter the cylindrical roller bearing 4 which is open, the cylindrical roller bearing 4 is fully lubricated, and the cylindrical roller bearing 4 is not easy to wear.

Referring to fig. 1 and 2, one side of the steel sheet 5 is abutted with the groove wall of the installation groove 10, and the other side of the steel sheet 5 is abutted with the inner ring end surface of the cylindrical roller bearing 4, so that the clamping work of the steel sheet 5 on the cylindrical roller bearing 4 is realized, and the roller 2 on the cylindrical roller bearing 4 is ensured to be stably installed in the installation groove 10.

Referring to fig. 1 and 2, in this embodiment, the number of the cylindrical roller bearings 4 is two, the two cylindrical roller bearings 4 are sleeved on the mandrel 3 in parallel, and the two cylindrical roller bearings 4 bear radial force and rotational torque transmitted by the working roller of the rolling mill, so as to ensure that the roller 2 works stably.

Specifically, referring to fig. 1 and 2, the end surfaces of the two cylindrical roller bearings 4 far from each other are respectively provided with a steel sheet 5 abutting against the groove wall of the installation groove 10, the support and installation of the cylindrical roller bearings 4 are realized through the steel sheet 5, and the sum of the thicknesses of the two cylindrical roller bearings 4 and the thicknesses of the two steel sheets 5 is equal to the thickness of the installation groove 10, so that the roller 2 is ensured to be positioned at the middle position of the installation groove 10 for working.

Referring to fig. 1, a fixed jackscrew 6 is arranged on a mandrel 3, stable installation of the mandrel 3 is achieved through the fixed jackscrew 6, the fixed jackscrew 6 is in threaded connection with the mandrel 3, a fixing bolt 7 is arranged on a support 1, connection between the support 1 and a rolling mill is achieved through the fixing bolt 7, the number of the fixing bolts 7 is four, and four fixing bolts 7 are respectively arranged at four corners of the support 1.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a twenty high rolling mill front and back door gyro wheel, includes support (1), dabber (3) and gyro wheel (2), dabber (3) are connected with support (1), be equipped with mounting groove (10) of installation gyro wheel (2) on support (1), gyro wheel (2) cover is established on dabber (3), its characterized in that, be equipped with cylindrical roller bearing (4) on dabber (3), gyro wheel (2) are connected with the outer lane of cylindrical roller bearing (4), the inner circle and the dabber (3) of cylindrical roller bearing (4) are connected, the both sides of cylindrical roller bearing (4) are equipped with the gasket.

2. Twenty-high rolling mill front and rear door roller according to claim 1, characterized in that the shim is a steel sheet (5).

3. The twenty-high rolling mill front and rear door roller according to claim 2, characterized in that the inner diameter of the steel sheet (5) is adapted to the outer diameter of the mandrel (3), the outer diameter of the steel sheet (5) being smaller than the outer diameter of the inner ring of the cylindrical roller bearing (4).

4. A twenty-high rolling mill front and rear door roller according to claim 3, characterized in that one side of the steel sheet (5) is in abutment with the wall of the mounting groove (10), and the other side of the steel sheet (5) is in abutment with the inner ring end face of the cylindrical roller bearing (4).

5. Twenty-high rolling mill front and rear door roller according to any of claims 2-4, characterized in that the number of cylindrical roller bearings (4) is two, two cylindrical roller bearings (4) being sleeved in parallel on the mandrel (3).

6. Twenty-high rolling mill front and rear door roller according to claim 5, characterized in that the end faces of the two cylindrical roller bearings (4) facing away from each other are respectively provided with steel sheets (5) abutting against the groove walls of the mounting groove (10), the sum of the thickness of the two cylindrical roller bearings (4) and the thickness of the two steel sheets (5) being equal to the thickness of the mounting groove (10).

7. The twenty-high rolling mill front and rear door roller according to claim 6, characterized in that the mandrel (3) is provided with a fixed jackscrew (6), and the bracket (1) is provided with a fixed bolt (7).