CN202715636U - Supporting roller component of scale-breaking withdrawal and straightening machine - Google Patents

Abstract

The utility model discloses a supporting roller component of a scale-breaking withdrawal and straightening machine and is applicable to a scale-breaking stretch bending straightening machine. An outer ring has a full roller path structure, and a rolling body is arranged between a shaft and the outer ring. The supporting roller component of the scale-breaking withdrawal and straightening machine is characterized in that thrust bearings are arranged between the shaft and the outer ring and on two sides of the rolling body; a sealing seat with an O-shaped ring is arranged on the side face of each thrust bearing; two lines of contact type sealing rings are arranged between the sealing seats and the outer ring; a sealing cover is arranged at the end of the outer ring and contacted with a retaining ring; axial impact is transferred to a base through a bearing and the retaining ring; and slopes are formed at two ends of a roll surface of the outer ring. The carrying capacity, abrasion resistance, impact resistance and sealing performance of a supporting roller are greatly improved, the service life of the supporting roller is greatly prolonged, scale removal and plate type improvement effects of the scale-breaking withdrawal and straightening machine are greatly improved, the supporting roller component is long in service life and extremely-low in maintenance cost, can meet high-efficiency and high-speed using requirements of the conventional scale-breaking withdrawal and straightening unit, is maintenance-free in a normal service life range and convenient to install and use, and can be repeatedly sharpened, and the service life can be maximized.

Description

Scale breading withdrawal straightening machine supporting roller component

Technical field

The utility model relates to metallurgy industry scale breading withdrawal straightening machine technical field, is the supporting roller component for scale breading pickling unit stretch bending-straightening machine specifically.

Background technology

The equipment that the scale breading stretching-bending straightener is taken over from the past and set a new course for the future as hot rolling, between cold rolling plays the important and pivotal role in the high speed of de-scaling, high efficiency and aspect the improving of plate shape.In the Metallurgical Industry, novel scale breading withdrawal straightening machine has merged flattening and tension straingtening technology, has the effect of scale breading, stretching, bending, aligning.Its principle is: when the band steel is crooked on the minor diameter roller, apply simultaneously tension force, because bending and distortion exist simultaneously, so that the band central core produces plastic elongation, improved belt plate shape.Its technology is: 1, make with steel and produce certain percentage elongation, after the band steel enters the scale breading withdrawal straightening machine, under the drive of scale breading withdrawal straightening machine, making band steel fibre layer carry out positive and negative both direction acts on back and forth, stretch-compression-stretch, make each fiber of strip section layer produce permanent plastic deformation, extended uniformly.The band steel through multi-drawing, bending, makes all internal fiber length be tending towards equal after plastic deformation under stretching and the effect of crooked compound action power, makes the band steel obtain preferably glacing flatness.2, the iron scale on broken hot-strip top layer makes the band steel reach better pickling effect, improves pickling speed.Stretcher strain has reduced the compactness extent of iron scale, so that iron scale peels off or crackle easily, acid solution is very easy to enter into the crackle of iron oxide cortex simultaneously, has improved speed and the effect of pickling.Strip through the scale breading withdrawal straightening machine belongs to preliminary working, thickness of slab is thicker, mass ratio is relatively poor, the scale breading backing roll uses on scale breading withdrawal straightening machine roller box, play the key effect of supporting, according to the position of effect and the use thereof of scale breading backing roll, require the backing roll good seal performance used on the scale breading withdrawal straightening machine, bear radially, axial shock loading is large.

The scale breading backing roll is as the critical component that draws in the tender machine, directly have influence on the effect of de-scaling, template improvement, and there are the problems such as not wear-resisting, low carrying in existing backing roll design always, has greatly restricted and has existingly broken phosphorus straightener production efficiency and de-scaling, template improves quality.

Existing scale breading backing roll mainly contains two kinds of structures, and a kind of is rolling element to be installed as load bearing component between axle and outer ring.As shown in Figure 2, sequence number 10 is axle, and 11 is back-up ring, and 12 is seal receptacle, and 13 is rolling element, and 14 is the outer ring, and 15 are sealing, and 16 is O type circle, and 17 is passage.This backing roll adopts full roller carrying to add the dustproof structure of ventilation, and bearing capacity is strengthened greatly, but axial carrying capacity is poor, and conventional bulk heat treatmet is adopted in outer ring 14, and wearability is not good, and outer ring 14 impact resistances are relatively poor; Meanwhile, ventilation is dustproof to have high input, difficult maintenance, and dust-proof effect is undesirable; And the dustproof design result of use of employing is not good.In using at the scene, exist easily stuck, the early failure phenomena such as break.

Another kind of making for installation shaft is rotation and load bearing component, and as shown in Figure 3, sequence number 18 is axle, and 19 is blowout patche, and 20 is end cap, and 21 is that seal receptacle one, 22 is that seal receptacle two, 23 is bearing, and 24 is the outer ring, and 25 are ring, and 26 is sealing ring, and 27 is O type circle, and 28 is collar.The backing roll of this structure adopts surface heat treatment process, solved well that backing roll shown in Figure 2 is not wear-resisting, shock resistance is poor, the problem of easy initial failure, but employing loading ability of bearing, it is little that its load illustrates 2 supporting roller structure, and axial carrying capacity is poor, can't be applied to the use occasion of high-mechanic and limited space.

Summary of the invention

For overcoming the deficiencies in the prior art, goal of the invention of the present utility model is to provide a kind of scale breading withdrawal straightening machine supporting roller component, with effective bearing capacity and sealing property of improving backing roll, the significantly anti-wear performance of improving product and impact resistance.

For achieving the above object, the technical solution of the utility model is: the outer ring is full roller path structure, rolling element is contained between axle and the outer ring, it is characterized in that: between axle and the outer ring, the both sides of rolling element are equipped with thrust bearing, be contained in the side of thrust bearing with the seal receptacle of O type circle, be provided with the biserial contact sealing ring between seal receptacle and the outer ring, seal cover is equipped with in the end of outer ring, seal cover contacts with back-up ring, and axial impact is delivered on the pedestal by bearing, back-up ring, and there is the slope at the roll surface two ends of outer ring.

The utility model compared with prior art, backing roll bearing capacity, service life, anti-wear performance, impact resistance and sealing property all significantly improve, improved greatly the effect that scale breading draws tender machine de-scaling, template to improve, higher service life and extremely low maintenance cost more can adapt to contemporary scale breading and draw efficient, the instructions for use at a high speed of tender unit, and the utility model is non-maintaining within normal service life, it is convenient to install, easy to use, repeatedly reconditioning is to reach maximum service life.

Description of drawings

Fig. 1 is the utility model structure diagram.

Fig. 2 is a kind of prior art structure diagram.

Fig. 3 is another kind of prior art structure diagram.

The specific embodiment

As shown in Figure 1, outer ring 5 is full roller path structure, 5 roll surface two ends, outer ring are provided with slope or circular arc, rolling element 4 is contained between axle 1 and the outer ring 5, between axle 1 and the outer ring 5, the both sides of rolling element 4 are equipped with thrust bearing 6, be contained in the side of thrust bearing 6 with the seal receptacle 3 of O type circle 7, be provided with biserial contact sealing ring 8 between seal receptacle 3 and the outer ring 5, seal cover 9 is equipped with in the end of outer ring 5, seal cover 9 contacts with back-up ring 2, axial impact is delivered on the pedestal by bearing 6, back-up ring 2, and 2 pairs of seal receptacles of back-up ring 3 carry out axial location.

Outer ring of the present utility model 5 raceways are full raceway, through-hole type structure, adopt a grinding, when the uniformity that guarantees each raceway, whole difficulty of processing reduce, machining accuracy and bearing capacity significantly improve, stress distribution is more reasonable, 5 outer mold surface two ends, outer ring are provided with slope or circular arc, optimized the roll body stress distribution, significantly having reduced outer ring 5 step place stress concentrates, Effective Raise its fatigue life, outer ring 5 outer surfaces, raceway inner surface adopt the heat treatment mode of surperficial mid frequency induction hardening, and wearability, the bulk heat treatmet that impact resistance is more traditional double; The two ends design thrust bearing 6 of rolling element 4 significantly improves axial carrying and shock resistance; Design back-up ring 2 on the axle, final impulsive force can be delivered on the pedestal, avoids outer ring 5 is impacted; The two ends of outer ring 5 are provided with biserial contact sealing ring 8 and seal cover 9, and mechanical seal is combined with contacting sealing, and sealing property is better.Smear an amount of extreme pressure grease in the raceway of outer ring 5, under top load, also can guarantee absorption and the lubricant effect of lubricating grease, and play certain cooling effect.

Claims (2)

1. scale breading withdrawal straightening machine supporting roller component, outer ring (5) is roller path structure, rolling element (4) is contained between axle (1) and outer ring (5), it is characterized in that: between axle (1) and outer ring (5), thrust bearing (6) is equipped with in the both sides of rolling element (4), be contained in the side of thrust bearing (6) with the seal receptacle (3) of O type circle (7), be provided with biserial contact sealing ring (8) between seal receptacle (3) and outer ring (5), seal cover (9) is equipped with in the end of outer ring (5), seal cover (9) contacts with back-up ring (2), and axial impact is by bearing (6), back-up ring (2) is delivered on the pedestal.

2. scale breading withdrawal straightening machine supporting roller component according to claim 1, it is characterized in that: there is the slope at the roll surface two ends of outer ring (5).

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