KR200296039Y1 - Vertical Roll Choke Sealing Device for Hot Rolling - Google Patents

Abstract

The present invention relates to a sealing device for blocking impurities flowing into the bearing (30) through the journal portion 20 of the vertical roll for hot rolling, the configuration of the coupling (10) is coupled to the shaft coupling end (10) ), A bearing 30 fitted to the journal portion 20 between the coupling 10 and the roll 70, a choke 60 for surrounding the bearing 30 and surrounding the bearing 30 and fixing the roll 70, In the vertical roll for hot rolling is assembled to the end plate 40 fixed to the end retainer 50, the end retainer 50 is coupled to the choke 60 to support the bearing 30 to maintain the same interval, the end It is coupled along the outer surface of the plate 40 and one side is provided with an outer shielding film 80 in close contact with the end of the coupling 10 and the other side of the inner shielding film in close contact with the outer peripheral surface of the journal (20) ( 82 is formed and the concave groove 84 is provided in the connecting portion 83 connecting the two blocking films 81 and 82. It said outer barrier film (81) inside the vertical roll chocks sealing apparatus for hot-rolling the elastic body is embedded.

Description

Sealing Device of Choak in Hot Roll

The present invention relates to an oil sealing device of a vertical roll for hot rolling, and more particularly, to a sealing device for a vertical roll choke for hot rolling that blocks impurities flowing into a bearing through a journal to prevent burnout of the bearing.

The general rolling process is divided into hot rolling and cold rolling, and hot rolling is a process of forming a sheet shape by first rolling a hot slab from a heating furnace, and cold rolling is rolling a thick plate of hot rolled plate shape at room temperature. It is the process of producing the thickness and width that the consumer needs.

Of course, the heat treatment is performed to increase the processability of the material during the cold rolling process, and the process of pickling or width cutting to remove scale generated during the heat treatment is performed, thereby brightening the process of being shipped to the product.

The present invention relates to a sealing device for a vertical roll choke used in a factory for hot rolling a slab during the rolling process, the assembly structure of the vertical roll used in the hot rolling is coupled to the driving body as shown in FIG. Cuff ring 10 having a roll 70 end coupled to a shaft, bearing 30 fitted to roll journal 20 between roll 70 and a coupling, and surrounding the bearing from the outside to fix the roll End retainer 50 bolted to choke 60, choke 60, surrounding journal portion 20, and supporting bearings at the same spacing, and end plate 40 fixed to end retainer 50. The bolt is coupled to the coupling and is assembled with an oil seal 80 that seals between the coupling 10 and the end plate 40.

However, the sealing device assembled with the above structure has a structure for sealing between the rotating cuff ring 10 and the end plate 40 to remove the scale generated on the surface of the slab during the rolling of the heated slab during hot rolling. In order to spray the high pressure water on the surface of the slab, the high pressure water is removed by the high pressure water spray, and some scales are scattered into the gap between the rotating coupling 10 and the oil seal 80, and the bearings are along the surface of the journal 10. There was a problem in that the bearing was sucked into the grease, mixed with the grease, rotated, and the bearing life was shortened or, in the severe case, the bearing was burned out and the bearing was replaced early.

Therefore, the technical problem to be solved by this paper is to prevent the above-mentioned problem from being introduced from the slab by the high-pressure water injection into the roll journal to reduce the bearing life and burnout. An oil sealing device for a roll is provided.

1 is a plan view showing the assembled state of the hot rolled roll

Figure 2 is an assembly cross-sectional view of a roll showing a conventional sealing device

Figure 3 is a detailed cross-sectional view of a roll showing a conventional sealing device

Figure 4 is an assembly cross-sectional view of the roll provided with the present design

5 is a detailed view of portion A of FIG.

6 is a perspective view of a sealing device provided with the present design

Explanation of symbols on the main parts of the drawings

10 coupling 11 cover

20: journal portion 30: bearing

40: unpreferred 50: end retainer

51: Bolt 60: Choke

70: roll 80: sealing device

81: external barrier 82: internal barrier

83: connecting portion 84: concave groove

85: elastic body 86: fixing bolt

The configuration for achieving the above technical problem is a coupling coupled to the driving body and the roll end is coupled to the shaft end, the bearing fitted to the bearing journal portion fitted to the roll journal between the coupling and the roll outside It consists of an end plate fixed along the outer surface of the end retainer end retainer, which is enclosed in the support and secures the roll, and is bolted to the choke to surround the outer circumferential surface of the journal unit 20 and support the bearing to maintain the same distance. In the vertical roll for hot rolling is assembled along the outer surface of the end plate is coupled to the outer side of the cuff ring close to one side and the inner side of the barrier is in close contact with the outer peripheral surface of the journal portion It is formed and the connection portion connecting the inner and outer barrier membrane is provided with a concave groove The interior of the protection film is consists of a seed-Filing device with an elastomer of the same phenomenon.

Hereinafter, described in detail with reference to the embodiment as follows.

Of course, the subject matter is not limited to the above-described embodiment. It is fixed along the outer surface of the end retainer 50 and is coupled with a plurality of bolts 86 in a round disc shape along the outer surface of the end plate 40 assembled in a roll journal 20 fitted shape. A protruding outer blocking film 81 is provided along the side end of the cuff ring 10, and on the other side, a protruding inner blocking film 82 is formed along the outer circumferential surface of the journal unit 20. A concave groove 84 is continuously provided in the connection portion 83 connecting the outer shielding film 81 and the outer shielding film 81, and the leaf spring of the same phenomenon so that the outer shielding film 82 retains elasticity inside the outer shielding film 82. A cover that is formed to protrude along the outer surface of the end of the sealing device and the roll-side coupling (70), which is provided continuously (85) to form a circular shape and narrows the gap between the end plate (40) and the cuff ring (10) It consists of (11).

Hereinafter, the operation will be described.

In the process of hot rolling with hot rolling vertical roll equipped with sealing device equipped with the present design, when the high pressure water is injected to remove the scale of the slab, the scale is separated from the slab by the pressure of the high pressure water coupling (10). When scattered between the end plate 40 and the end plate 40, the scattered scale first collides with the cover 11 provided to protrude along the outer surface of the end of the cuff ring 10, and is scattered to the outside and the cover 11 and the end plate. The scale flowing into the gap between the 40 is fixed to the end plate 40 and the inflow into the journal portion 20 is blocked by the outer blocking film 81 in close contact with the coupling 10.

If some scale flows inward even in the secondary blocking, the scale is collected in the concave groove 84 formed in the connecting portion 83 connecting the external blocking film 81 and the internal blocking film 82 to prevent further inflow. The third blocking is made.

When the fine scale flows inward despite the tertiary blocking, the scale is prevented from flowing into the journal by the internal blocking film 82 in close contact with the scale by the internal blocking film 82 in close contact with the outer peripheral surface of the scale. The journal unit 20 is to be prevented from flowing into.

In addition, the outer spring 81 in contact with the side surface of the coupling 10 receives heat due to rotation to prevent elasticity and loss of the restoring force to form a plate spring 85 inside the outer shielding film to form a plate spring (85) By the coupling of the coupling 10 and the outer shielding film 81 by the tension of) will be doubled the effect of blocking the inflow of the scale.

The effect of this paper is to prevent scale dust from the slab from flowing into the roll journal, to prevent the shortening of bearing life, and to prevent burnout of the bearing and to increase the replacement cycle of the bearing. .

Claims (1)

Coupling 10 is pivotally coupled to the drive body, the end of the roll 70 is coupled to the shaft 10, the bearing 30 is fitted to the roll journal portion 20 between the coupling and the roll 70, the journal The choke 60 which supports the bearing 30 fitted to the part 20 from the outside and fixes the roll 70, and is coupled to the choke 60, surrounds the outer circumferential surface of the journal part 20, and the bearing 30 is formed. In the vertical roll for hot rolling composed of the end retainer 50, the end plate 40 fixed along the outer surface of the end retainer 50 to maintain the same distance, the outside of the end plate 40 It is coupled along the side and one side is provided with an outer blocking film 81 in close contact along the end of the coupling 10 and the other side is formed with an inner blocking film 82 in close contact along the outer circumferential surface of the journal portion (20) And a concave groove 84 is formed in the connecting portion 83 connecting the inner blocking film 82 and the outer blocking film 81. Is hot rolled and the sealing device of the vertical roll chocks, characterized in that the embedded inside the elastic body 85 of the outer barrier film (81).