RU2462321C1 - Forming roll support seal - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: proposed seal comprises cover and sealing V-like annular cuffs including case, jaw with working edges to get in contact with baffle and adapter fitted on bearing bush. Working edges are pressed against sealed surface by elastic properties of the jaws. Gaps resulting from wear of cuff working edges are ruled out by providing the proposed device with elastic ring elements with cross-section shaped to circle or ring fitted with interference between cuff case and jaw.

EFFECT: higher efficiency.

1 dwg

Description

The invention relates to rolling production and can be used in the bearings of rolling rolls of sheet, high-quality and wire mills.

Known as an analogue is the design of the sealing device of the support of the rolling roll (see, for example, Overview, "Metallurgical Production", issue 4, M., 1990, p.19-22). This sealing device comprises annular V-cuffs installed in the lid between the nozzles mounted on a trunnion-sleeve, including a housing and an elastic sponge with a working edge. A disadvantage of the known device is that the cuffs do not have the ability to adjust the preload of the working edge after its wear.

Of the known sealing devices, the closest in technical essence (prototype) is the sealing device of the support of the rolling roll, comprising a cover with ring end V-shaped cuffs, including a housing, a sponge with working edges and located between the fender and nozzle fixed to the axle bushing, end surfaces which are in contact with the working edges of the cuffs (see RF patent No. 2147948, class B21B 31/02, 04/20/1999).

This sealing device supports the rolling roll allows you to equalize the contact pressure between the cuffs during axial movements.

A disadvantage of the known design of the sealing device (prototype) is that the pressing of the working edges to the sealing surface is due to the elastic properties of the sponge. In the process of wear of the working edges of the cuff, the pressing force in the contact zone with the working surfaces weakens, which leads to a loss of the sealing properties of the device.

The technical result of the proposed sealing device support rolling roll is to maintain the sealing properties of the cuff and increase the durability of the sealing device in the process of wear of the working edges of the cuff.

The technical result of the proposed sealing device supporting the rolling roll is achieved by the fact that the device is equipped with elastic ring elements installed with an interference fit between the cuff body and the sponge.

As an example, in the drawing - figure 1 shows the sealing device of the support of the rolling roll.

In the pillow 1 there is a bearing assembly consisting of an insert sleeve 2 and in contact with a sleeve 3 of a pin 4 mounted on the neck of the roll 3, on which the nozzle 5 and the chipper 6 are fixed. In the cover 7, end V-ring annular cuffs 8 are installed, including a housing 9 and elastic jaws 10 with working edges 11 in contact with the nozzle 5 and the chipper 6. Between the body 9 and the jaw 10 are located tightened ring elastic elements 12, 13. One of the elements 12 can be made in cross section, for example, in the form of a circle, the other element 13 is in the form of a ring. Other embodiments of the annular element are possible.

The operation of the device is as follows.

During operation of the sealing device, the working edges 11, in contact with the nozzle 5 and the chipper 6, are subject to wear. The elastic elements 12, 13, due to their interference fit, act on the jaws 10, trying to press them against the contacting surfaces of the nozzle 5 and the chipper 6, thus ensuring reliable sealing of the friction surfaces.

Thus, the proposed sealing device of the support of the rolling roll due to the creation on the working edge of the cuff of an additional constant pressing force allows you to extend the cuff after wear of the working edges.

Claims (1)

The sealing device of the support of the rolling roll, comprising a cover with annular end V-shaped cuffs, including a housing and a sponge with working edges, and located between the chipper and nozzle fixed on the axle sleeve, the end surfaces of which are in contact with the working edges of the cuffs, characterized in that it equipped with elastic ring elements made in cross section in the form of a circle or ring and installed with an interference fit between the cuff body and the sponge.