KR100758459B1 - Sealed rolling bearing box of roller shaft in plating bath - Google Patents

Abstract

The present invention relates to a bearing which is assembled to the shaft portion of the rollers for guiding the steel sheet 7 in the plating bath in a steel mill in a steel mill, and more specifically, the shaft (1) shaft portion (1a) of the roller (1) in the plating solution bath (5) Instead of the sliding bearing 50 to be assembled to the roller bearing (11) is used instead of the roller shaft (1a) with a small wear of the roller bearing, the sealing of the roller shaft in the plating liquid bath configured to prevent the internal penetration of the plating liquid (5a) to improve durability It relates to a rolling bearing box (10).

Sliding Bearings, Rolling Bearings, Rollers, Wear, Sealed

Description

Sealed rolling bearing box of roller shaft in plating bath {A SEALED ROLLING BEARING BOX ON THE SHAFT OF ROLLERS IN A PLANTING SOLUTION POT}

1 is a side schematic view of a roller installation in a conventional plating solution bath;

Figure 2 is a front view of the roller facility in the conventional plating solution bath;

3 is a cross-sectional view of the sliding bearing of the conventional roller equipment in the plating solution bath.

4 is a cross-sectional view of a worn roller shaft of a roller installation in a conventional plating solution bath;

5 is a cross-sectional view of the sealed rolling bearing box of the roller shaft in the plating solution bath according to the present invention;

6 is a perspective view of a rotor in a sealed rolling bearing box of a roller shaft in a plating solution bath according to the present invention; And

7 is an exploded perspective view of the sealed rolling bearing box of the roller shaft in the plating solution bath according to the present invention.

Explanation of symbols on the main parts of the drawings

 1 .... Roller 4 .... Air Injection

 5 .... Plating bath 6 .... Furnace

 7 .... steel plate 8, 9 .... roller

10 .... Sealed rolling bearing box of roller shaft in plating bath                 

11 .... rolling bearing 12 .... rotor

13 .... bellows 14 .... carbon ring

15 .... ring spring 16 .... stator

17 .... House 19 .... Cover

21 .... ring spring 50 .... sliding bearing

The present invention relates to a bearing that is assembled to the shaft portion of the rollers for guiding the steel plate in the plating bath in a steel mill in a steel mill, and more specifically, wear with a roller shaft instead of a sliding bearing assembled to the shaft portion of the roller in the plating solution bath The present invention relates to a sealed rolling bearing box of a roller shaft in a plating liquid bath, which uses less rolling bearings and is configured to prevent internal penetration of the plating liquid to improve durability.

1 is a side schematic view of a conventional roller facility 70 in a plating solution bath, FIG. 2 is a front view of a roller facility 70 in a conventional plating solution bath, and FIG. 3 is a roller facility 70 in a conventional plating solution bath. 4 is a cross-sectional view of the worn roller shaft 1a of the roller installation 70 in a conventional plating liquid bath.

1 to 4, the plating process of coating the coating film on the surface of the steel sheet 7 by using the roller facility 70 in the conventional galvanizing bath (5) is generally the exit of the heating furnace (6) In the process of applying a coating film layer having a uniform thickness on both sides of the steel sheet 7 with an air spraying device 4 on the surface of the steel sheet 7 passing through the bath (5), the roller facility 70 performs such a plating function Rotation to flatten the bending or torsional deformation of the sink roller (1) for switching the direction of the steel sheet (7) in the bath (5) and the steel sheet (7) generated from the top of the sink roller (2) in the device having Guide rollers (8) (9).

Since the rollers are rotated in the hot galvanizing solution 5a at about 450 ° C. in the galvanizing bath 5, most of them are sliding metal bearings, that is, sliding, made of a metal material having excellent heat resistance, corrosion resistance and abrasion resistance. The bearing 50 is used.

As shown in FIG. 3, the conventional sliding bearings 50 are assembled to the bearing portions of the respective rollers, and all have the same structure. The sliding bearing 50 has a sleeve 54 is installed in the bearing portion, the bush 53 and the frame housing 52 is installed around the stop bearing 50, the stopper 51 for preventing the roller from being pushed in the axial direction Is installed.

However, since the conventional sliding bearing 50 is subjected to a high tension of about 4 to 7 Ton / mm 2 in the steel sheet 7 and the roller 1 as a sliding method, in order to overcome this, the sliding bearing 50 The sleeve 54 and the bush 53, which are the parts of the wire, are made of a material having excellent corrosion resistance, heat resistance, and abrasion resistance, such as the STELLITE series.

However, despite the use of a material having excellent corrosion resistance, heat resistance and abrasion resistance as described above, the rollers of the tub 5 are rotated due to the high load received while rotating. As the sleeve 54 and the bush 53 of the roller bearing portion rotate in a sliding manner with each other, wear occurs on the roller shaft 1a, and as the rollers continue to rotate, the wear amount increases.

When wear is formed in the bearing parts of the rollers as described above, vibration is generated in the air injected from the compressed air injection device 4 that determines the amount of plating deposition on the tub 5, and the vibration of the steel sheet 7 itself is generated. Generated, resulting in poor plating.

In addition, when the roller was initially introduced into the bath 5, the degree of vibration was a slight vibration level. However, if the amount of wear increases as time passes, the vibration is increased by the wear part formed in the bearing part of the sliding bearing 50. As a result, the impact that the shaft portion of the roller and the inner surface of the sliding bearing 50 collide with each other deepens, causing an accident that the shaft portion of the roller is broken, so that the sliding bearing 50 needs to be replaced frequently, and the shaking degree is severe. In this case, the tub 5 or the entire peripheral equipment is developed to be shaken, which causes a problem of stopping the equipment operation itself.

In addition, when the rollers are shaken, the plating liquid in the bath 5 is shaken, and ash or debris 7a, which is an impurity that floats on the water surface, is easily adhered to the plating film layer on the surface of the steel sheet 7, so that the plating property of the steel sheet 7 is increased. There is a problem with this deterioration.

The present invention has been proposed in order to solve the conventional problems as described above, by installing a rolling bearing instead of sliding bearings on the shafts of the plurality of rollers installed in the plating bath for the plating process of the steel sheet to make point contact with the rollers. It is an object of the present invention to provide a sealed rolling bearing box of a roller shaft in a plating liquid bath configured to induce extension of the life of the rollers and to ensure sealing even in the plating liquid bath to prevent gap penetration of the plating liquid.

The present invention as a technical configuration for achieving the above object, in the bearing assembled to the roller shaft portion for guiding the steel plate in the plating bath during the steel plate plating process, the rotational force coupled to the roller shaft to rotate Rotor for sending out the plating liquid to the outside; A stator coupled to the shaft in close contact with the rotor to prevent inflow of plating solution; A spring member disposed on the outer circumferential portion of the stator so as to elastically support the stator at a side of the stator such that a gap is not formed; A rolling bearing coupled to the shaft at the spring member side and having a cover assembled at the side thereof; And a housing surrounding the rotor, the stator, the spring member, and the rolling bearing, which induces point contact with the roller shaft and prevents penetration of the plating liquid to prevent wear of the roller shaft. By providing.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

5 is a cross-sectional view of the sealed rolling bearing box 10 (hereinafter referred to as rolling bearing box 10) of the roller shaft in the plating solution bath according to the present invention, Figure 6 is a rotor in the rolling bearing box 10 according to the present invention 12 is a perspective view, Figure 7 is an exploded perspective view of a rolling bearing box 10 according to the present invention.

5 to 7, the rolling bearing box 10 according to the present invention is largely in close contact with the rotor 12, the rotor 12 coupled to rotate with the shaft of the rollers installed in the plating bath during the steel plate plating process Stator 16 is coupled to the roller shaft to prevent the inflow of plating liquid, a spring member 13 for elastically supporting the stator from the side of the stator 16, the spring member 13 is coupled to the shaft in the side It comprises a rolling bearing 11 and a housing 17 surrounding the rotor 12, the stator 16, the spring member 13 and the rolling bearing 11 on the side cover 19 is assembled.

The rolling bearing box 10 according to the present invention is installed in the same configuration in the shaft portion (8a) (9a) of the rollers (1) (8) and (9) installed in the plating solution bath (5), here for convenience of explanation For the configuration of the rolling bearing box 10 mounted on the shaft of the roller 1 will be described in more detail.

Looking at the rolling bearing box 10 according to the present invention with reference to the drawings in more detail, the rotor 12 is rotated by being coupled to the shaft (1a) of the roller (1). Since the roller 1 is disposed in contact with the steel sheet 7 and rotated by the progress of the steel sheet 7, the rotor 12 is rotated by the rotation of the roller 1 according to the progress of the steel sheet 7. .

The rotor 12 pushes the plating liquid 5a in the plating liquid bath 5 outward with the rotational force generated during rotation, and thus the plating liquid 5a enters into the rolling bearing box 10 according to the present invention. This is primarily blocked.

On the other hand, the stator 16 is installed on the side of the rotor 12 to be in close contact with the rotor 12 to prevent the inflow of the plating liquid 5a. The spring member 13 is installed on the side so as to be circumscribed around the shaft 1a so as to push the stator 16 elastically so that no gap occurs in the inner diameter of the stator 16.                     

The spring member 13 is used to have a high elastic value to increase the compressive force for the stator 16, in the present invention used a bellows of high elastic value as the spring member (13).

In addition, the rolling member 11 is coupled to the roller shaft (1a) and the cover 19 is assembled on the side of the spring member 13, the rotor 12, the stator 16, the spring The member 13 and the rolling bearing 11 are separated from the plating liquid 5a by the housing 17 surrounding them. The cover 19 is screwed into the housing 17 or seals the side of the rolling bearing 11 by welding. In addition, the lock nut 18 is engaged with the male screw portion 1b at the end of the roller shaft 1a to support the roller shaft 1a inside the cover 19.

On the other hand, between the stator 17 and the spring member 13, the carbon ring 14 and the carbon ring 14, which are disposed to be coupled to the roller shaft 1a to prevent penetration of the plating solution 5a, are elastically lateral. A supporting ring spring 15 is additionally installed.

In addition, the carbon ring 14 is divided into three parts, and the carbon rings 14a and 14b to elastically support the separated carbon rings 14a, 14b and 14c on the roller shaft 1a. A ring spring 21 is provided in the groove 14d formed in the outer circumferential portion of the 14c).

Hereinafter, the operation of the rolling bearing box 10 according to the present invention will be described with reference to the drawings.

Referring to FIG. 6, since the rotor 12 in the rolling bearing box 10 according to the present invention is key-coupled integrally with the roller shaft 1a, as described above, the rollers are moved along the advancement of the steel plate 7. Are rotated so that the roller shaft 1a is rotated.

When the rotor 12 is rotated, the galvanizing solution 5a which is about to enter the rolling bearing box 10 side is pushed by the rotational force of the rotor 12 to prevent penetration of the galvanizing solution 5a primarily. .

In addition, since the stator 16 is coupled to the roller shaft 1a to be in close contact with the side of the rotor 12, the zinc plating solution 5a is not easily introduced into the rolling bearing box 10 according to the present invention.

On the other hand, since the bellows 13 having a high elasticity as a spring member supports the stator 16 while pushing the stator 16 to the outside, the zinc plating solution 5a further enters the rolling bearing box 10 according to the present invention. can not do.

In addition, the carbon ring 14 disposed between the stator 16 and the bellows 13 seals between the stator 16 and the bellows 13, thereby secondarily infiltrating the zinc plating solution 5a. To prevent. On the other hand, the carbon ring 14 is separated into three parts, and is in close contact with the roller shaft 1a at right angles by a ring spring 21 that is elastically supported at its outer circumference to prevent penetration of the zinc plating solution 5a. do. In addition, even when the roller shaft 1a and the carbon ring 14 are rubbed and the inner part of the carbon ring 14 is worn, the carbon ring 14 is always provided by the axial compression force of the ring spring 21. Close contact with the shaft 1a enhances the sealing effect.

On the other hand, the rolling bearing 11 is supported so that the roller shaft (1a) can be smoothly rotated while making point contact with the roller shaft (1a), the roller shaft than when using a conventional sliding bearing (50) The wear amount of (1a) is remarkably reduced, and as a result, vibration and vibration phenomena as in the prior art are significantly reduced during the plating operation.

As described above, the roller 1 may be used for a long time while the sealing of the zinc plating solution 1a is reliably maintained by the action of the rolling bearing box 10 according to the present invention.

According to the sealed rolling bearing box of the roller shaft in the plating bath according to the present invention as described above, the wear amount of the roller shaft is significantly reduced than when using the conventional sliding bearing, the damage of the roller shaft is less, and thus the roller Since the number of years of use increases compared to the conventional, there is a useful effect of reducing the maintenance and replacement costs.

In addition, according to the sealed rolling bearing box of the roller shaft in the plating liquid bath according to the present invention, since the vibration and vibration is hardly generated during the plating operation than when using a conventional sliding bearing, there is a useful effect that the plating effect is improved.

In addition, according to the sealed rolling bearing box of the roller shaft in the plating bath according to the present invention, the sealing is securely maintained to prevent wear and damage due to the zinc plating solution has a useful effect that can be used for a long time.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (4)

In the bearing assembled to the roller shaft portion for guiding the steel plate in the plating solution bath during the steel plate plating process, A rotor (12) coupled to the roller shaft so as to rotate out of the plating liquid with a rotational force according to the rotation of the roller; A stator 16 coupled to the shaft in close contact with the rotor to prevent inflow of plating solution; A spring member 13 disposed on the outer circumferential portion of the stator 16 so as to elastically support the stator so that no gap is formed; A rolling bearing (11) coupled to the shaft at the side of the spring member (13) and having a cover (19) assembled at the side; And Sealed rolling of the roller shaft in the plating bath including a housing (17) surrounding the rotor, the stator, the spring member and the rolling bearing to induce point contact with the roller shaft and prevent infiltration of the plating liquid to prevent wear of the roller shaft Bearing box. The method of claim 1, The spring member 13 is a sealed rolling bearing box of the roller shaft in the plating solution bath, characterized in that the bellows. The method of claim 1 further comprising Between the stator 17 and the spring member 13 further includes a carbon ring 14 coupled to the shaft and a ring spring 15 for elastically supporting the carbon ring to prevent penetration of the plating liquid. Sealed rolling bearing box of the roller shaft in the plating solution bath, characterized in that. The method of claim 3, wherein The carbon ring 14 is divided into three, and the ring spring 21 is inserted into the groove 14d formed on the outer circumferential surface of the carbon ring 14a, 14b, 14c to elastically support the triangular carbon ring 14a, 14b, 14c. Thus, the carbon ring 14 is sealed rolling bearing box of the roller shaft in the plating liquid bath, characterized in that the inner surface is worn close to the roller shaft (1a) by friction with the roller shaft (1a).

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