RU2399446C1 - Sealing device of forming roll support - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to the field of rolling equipment, namely to sealing devices of working rolls supports, and may be used, for instance in sealing devices of bearing supports of machines and mechanisms. Sealing device of forming roll support comprises bearing unit, nozzle, arranged on shaft journal, cover of bearing with seat for installation of sealing collar, including body, radial and end grips with working edges interacting with according surfaces of nozzles. End grip is connected to radial grip in its end part and is arranged with curvilinear shape, which faces radial surface of nozzle with its concave side, end surface of which is arranged as inclined. Ratio of rigidities in end and radial grips makes 1:3.

EFFECT: invention makes it possible to preserve sealing properties of collar in process of measurement of relative position of rubbing surfaces of roll, and also to increase durability of sealing device and to increase efficiency.

2 dwg

Description

The invention relates to the field of rolling equipment, specifically to sealing devices of bearings of work rolls, and can be used in sealing devices of bearing bearings of machines and mechanisms.

Known as an analogue is the design of the sealing device of the support of the rolling roll (see, for example, RF patent No. 2059903, class F16J 15/32, 03/29/1993). This sealing device comprises a cover with a sealing assembly located in it, including two cuffs, one of which, with its working edge, is in contact with the end surface of the roll, and the other with its working edge is in contact with the radial surface of the roll neck. The disadvantage of this device is that two cuffs are used to seal two surfaces, which makes it difficult to use in tight spaces.

Of the known designs of sealing devices, the closest in technical essence (prototype) is a rolling roll sealing device containing a bearing cover with a seat for installing a sealing collar, including a housing, radial and end lips with working edges interacting with the respective surfaces of the rolling roll (see patent RF №2169873, CL 7 F16J 15/32, 12.12.1998).

This sealing device supports the rolling roll allows for reliable sealing of the friction surfaces at a certain fixed position of the end and radial surfaces of the roll.

A disadvantage of the known design of the sealing device (prototype) is that when changing the position of the friction surfaces of the roll relative to the lip of the cuff, the latter are not able to provide reliable working contact with the end and radial surfaces of the roll with their working edges.

The technical result of the proposed sealing device supporting the roll is to maintain the sealing properties of the cuff in the process of changing the relative position of the friction surfaces of the roll, increasing the durability of the sealing device, increasing efficiency.

The technical result of the proposed sealing device of the support of the rolling roll is achieved by the fact that the end sponge is connected to the radial sponge in its end part and is made of a curved shape, the concave side facing the radial surface of the nozzle, the end surface of which is made inclined, while the ratio of the stiffness of the end and radial jaws is 1: 3.

The claimed sealing device of the bearing of the rolling roll is shown in the drawings, where

- figure 1 shows the sealing device of the support of the rolling roll in one extreme position of the work roll;

- figure 2 is a sealing device supporting the roll in the opposite extreme position of the work roll.

In the pillow 1 with the bearing 2 of the rolling roll 3 and the nozzle 4, a cover 5 is installed with a sealing sleeve 6 located in it, consisting of a housing 7, a radial lip 8 with a working edge 9 and a face lip 10 with a working edge 11. The end lip 10, being a continuation radial sponge 8, connected to it in its end part and made in cross-section in the form of a curved shape with a concave surface 12 facing the radial surface 13 of the nozzle 4, the end surface 14 of which is made inclined, while the stiffness ratio 1st butt 10 and radial 8 jaws is 1: 3.

The operation of the device is as follows.

In the process, the mechanical sponge 10, being the first stage of the bearing sealing assembly 2, prevents mainly the scale contained in the coolant from entering the bearing cavity 2. The radial lip 8, by contacting its working edge 9 with the corresponding surface of the nozzle 4, finally protects the bearing 2 from penetration of coolant. During the installation of the roll 3 (especially on high-quality rolling mills), axial movements are possible relative to the pillow 1 with the cover 5 and the sealing collar 6. When the roll 3 is moved to the leftmost position (Fig. 1), in which the collar 6 is removed from the nozzle 4 on the maximum distance, the end sponge 10 is in contact with the portion of the inclined surface 14 of the nozzle 4, closest to the working edge 11. In the process of moving the roll 3 to the extreme right position (figure 2), the working edge 9 of the radial sponge 8 slides along the radial surface 13 on cages 4, and the working edge 11 of the end jaw 10, moving along the inclined surface 14 of the nozzle 4, is in contact with it in the area farthest from the cuff 6. Due to this embodiment of the device, the contact stresses in the working edge of the end jaw practically do not change with significant axial movements of the roll .

Thus, the proposed sealing device of the support of the rolling roll, comprising a bearing assembly, a nozzle located on the neck of the roll, a bearing cover with a socket for installing a sealing collar, including a housing, a radial and end lip with working edges interacting with the respective surfaces of the nozzle, characterized in that the end sponge is connected to the radial sponge in its end part and is made of a curved shape, the concave side facing the radial surface of the nozzle, torus the new surface of which is made inclined, while the ratio of the stiffnesses of the end and radial jaws is 1: 3, it allows preserving the sealing properties of the cuff with significant changes in the position of the rubbing surfaces, increasing the durability of the sealing device, increasing its efficiency by ensuring guaranteed interaction of the working edges of the cuff with the surfaces of the sealing devices.

Claims (1)

A sealing device for a support of a rolling roll, comprising a bearing assembly, a nozzle located on the neck of the roll, a bearing cover with a socket for installing a sealing collar, including a housing, a radial and end lips with working edges interacting with respective surfaces of the nozzle, characterized in that the end lip is connected with a radial sponge in its end part and made of a curved shape, with a concave side facing the radial surface of the nozzle, the end surface of which you full inclined, while the ratio of the stiffness of the end and radial jaws is 1: 3.

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