CN202621566U - Supporting roller of scale-breaking drawing and straightening device - Google Patents

Abstract

The utility model discloses a supporting roller which is used for a scale-breaking drawing and straightening device. A separating ring is arranged on a shaft. Needle bearings are arranged on two sides of the separating ring. A jacket is arranged outside the separating ring and the needle bearings in interference fit mode. Housing washers are arranged in the position of an inner hole step of the jacket and on two sides of the needle bearings. A thrust roller bearing and a shaft washer are sequentially fixed on the outer side of each housing washer. An O-shaped ring and a sealing ring one are respectively arranged between each shaft washer and the shaft and between each shaft washer and the jacket. A washer is arranged between the sealing rings one. Stop rings for holes are clamped in the positions of the outer side steps of the inner holes of the jacket. Stop rings for the shaft, preventing the shaft washers from axially moving, are fixed in a locating groove of the shaft. Sealing rings two are arranged in shaft shoulders of the shaft. According to the supporting roller, the needle bearings are adopted to bear radial force, the thrust roller bearings arranged at the two ends are adopted to bear axial force, a structure style of combination of rigidity sealing and rubber sealing is adopted, and therefore manufacture accuracy, rotation accuracy and abrasion resistance are good, stability at utilization time is high, sealing is reliable, and machining and installing efficiency and installing accuracy can be effectively improved at the same time.

Description

Scale breading straightening machine backing roll

Technical field

The utility model relates to metallurgy industry scale breading straightening machine technology field, is a kind of backing roll that is used for scale breading straightening machine specifically.

Background technology

In the modern metallurgical industry, novel scale breading straightening machine has merged flattening and tension straingtening technology, has the effect of scale breading, stretching, bending, aligning.Its principle is: the band steel when crooked, applies tension force simultaneously on the minor diameter roller, owing to crookedly exist simultaneously with distortion, makes the band central core produce plastic elongation, has improved belt plate shape.Its technology is: 1, make the band steel produce certain percentage elongation; After the band steel gets into scale breading straightening machine; Under the drive of scale breading straightening machine, make band steel fibre layer carry out positive and negative both direction and act on stretching-compression-stretching back and forth; Make each fiber of band steel sectional layer produce permanent plastic deformation, extended uniformly.The band steel through repeatedly stretching, bending, makes all internal fiber length after plastic deformation, be tending towards equal under stretching and the effect of crooked compound action power, makes the band steel obtain glacing flatness preferably.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, makes iron scale peel off easily or crackle, and acid solution is very easy to enter into the crackle of iron oxide cortex simultaneously, has improved the speed and the effect of pickling.Strip through scale breading straightening machine belongs to preliminary working; Thickness of slab is thicker, and mass ratio is relatively poor, and the scale breading backing roll uses on scale breading straightening machine roller box; Play the key effect of supporting; According to the position of the effect and the use thereof of scale breading backing roll, require the backing roll good seal performance used on the scale breading straightening machine, bear radially, axial shock loading is big.

As shown in Figure 2, what installed the backing roll inside on original scale breading straightening machine is journal bearing 14 (needle bearing of band Internal and external cycle), the deep groove ball bearing 15 of standard, but this frame mode; What mainly bear is radial load; The axial force that can bear is smaller, in use, and reason such as the axial float of, strip bad, equipment precision owing to template; The scale breading backing roll will receive very big axial force; If the backing roll axially loaded does not reach requirement, phenomenon then can appear burning to death, stuck etc., influence the life-span of backing roll.Simultaneously original inside configuration frictional force is bigger, can produce relatively between working roll and the backing roll and slide, and backing roll and working roll linear velocity do not match, and cause roll surface wearing more serious.

Summary of the invention

For overcoming the deficiency of prior art; The goal of the invention of the utility model is to provide a kind of scale breading straightening machine backing roll; To improve bearing capacity and the wearability of roll surface thereof of backing roll on radial and axial, improve its combination property, thereby reach the purpose that improves its service life.

For realizing above-mentioned purpose, on the axle of the utility model spacer ring is housed, needle bearing is installed in the both sides of spacer ring; Overcoat is interference fitted in outside spacer ring and the needle bearing; And seat ring is equipped with in the endoporus step place of its external sleeve and the both sides of needle bearing respectively, and the outside of seat ring is fixed with thrust roller bearing, blowout patche successively, and blowout patche is equipped with O type circle, sealing ring one respectively with axle, outer inner room; One of sealing ring is provided with packing ring; The hole is stuck in the step place, the outside of overcoat endoporus with back-up ring, is fixed with in the locating slot of axle and prevents the axially movable shaft block ring of blowout patche, in the shaft shoulder of axle sealing ring two is housed.

The utility model compared with prior art has the following advantages.

(1) adopt needle bearing to come bearing radial force; Two ends adopt thrust roller bearing to bear axial force, and conserve space is under the prerequisite that improves radial force; Strengthened axially loaded; Simultaneously on original basis, increase the wall thickness of outer ring, the diameter of axle, thus the stability of the integral rigidity that has improved backing roll when using.

(2) mode that adopts rigid seal and rubber seal to make up, good seal performance.

(3) version of employing bearing constituent element reduces the accumulation of error and friction factor, thereby has improved the product accuracy of manufacture, running accuracy and wearability.

(4) adopt the version of this bearing constituent element, in process, can reduce the number of parts of processing, assembling, improved processing and efficiency of assembling and assembly precision.

Description of drawings

Fig. 1 is the structure diagram of the utility model.

Fig. 2 is the structure diagram of original scale breading backing roll.

The specific embodiment

As shown in Figure 1, on the axle 10 spacer ring 7 is housed, needle bearing 9 is installed in the both sides of spacer ring 7; Overcoat 8 is interference fitted in outside spacer ring 7 and the needle bearing 9; Seat ring 11 is equipped with in the endoporus step place of its external sleeve 8 and the both sides of needle bearing 9, and the outside of seat ring 11 is fixed with thrust roller bearing 12, blowout patche 13 successively, and blowout patche 13 and axle 10,8 in overcoat are equipped with O type circle 6, sealing ring 1 respectively; One 4 of sealing rings are provided with packing ring 5; Be used to prevent that blowout patche 13 axially movable holes are stuck in the step place, the outside of overcoat 8 endoporus with back-up ring 3, be fixed with in the locating slot of axle 10 and prevent blowout patche 13 axially movable shaft block rings 2, in the shaft shoulder of axle 10 sealing ring 21 is housed.

In the utility model scale breading backing roll, axle 10 two ends are installed on the roller seat of scale breading straightener roller box, and fixing, and with the fixing anti-rotation of the pin-and-hole at two ends, use axis 10 does not rotate; Overcoat 8 contacts with another parts working roll in the roller box, through phase mutual friction between the two, makes overcoat 8 rotations; After the overcoat 8 stressed rotations, needle bearing 9 also begins rotation, and spacer ring 7 is rotation thereupon also, and at this moment needle bearing 9 bears outside whole radial loads to whole backing roll basically; When the strip poor quality who is aligning, axial float or other reason produce axial force to backing roll; Axial force is delivered to thrust roller bearing 12 by seat ring 11; Be delivered to blowout patche 13 again, by the transmission amount of shaft block ring 2 limit axial, at this moment thrust roller bearing 12 has born the axial force of most at last; And alleviated the axial impact intensity of force, thereby realized the process of whole backing roll bearing radial force and axial force.Its sealing is played with back-up ring 3, sealing ring 1, packing ring 5 in sealing ring 21, O type circle 6, hole.

Claims (1)

1. scale breading straightening machine backing roll; Comprise axle (10); It is characterized in that: on the axle (10) spacer ring (7) is housed; Needle bearing (9) is installed in the both sides of spacer ring (7), and overcoat (8) is interference fitted in outside spacer ring (7) and the needle bearing (9), and respectively seat ring (11) is equipped with in the endoporus step place of its external sleeve (8) and the both sides of needle bearing (9); The outside of seat ring (11) is fixed with thrust roller bearing (12), blowout patche (13) successively; Between blowout patche (13) and axle (10), overcoat (8) O type circle (6), sealing ring one (4) are housed respectively, are provided with packing ring (5) between sealing ring one (4), the hole is stuck in the step place, the outside of overcoat (8) endoporus with back-up ring (3); Be fixed with in the locating slot of axle (10) and prevent the axially movable shaft block ring of blowout patche (13) (2), in the shaft shoulder of axle (10) sealing ring two (1) is housed.

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