CN201141397Y - High-speed support roller bearing group component - Google Patents

Abstract

The utility model relates to a high speed backing roll bearing constituent, which belongs to the backing roll in various stretching and straightening machines. The bearing constituent mainly solves the problems that in the prior backing roll bearing constituent, the straightening speed is 350 m/min, and leakage and heating of the lubricating oil are easy to happen, which can cause the burning damage of the bearing; the service life of the working roll is short, the maintenance or the grinding are difficult, thus the working stability of the stretching and straightening machine is severely influenced, and the improvement of the straightening speed is difficult. The high speed backing roll bearing constituent comprises a shaft and a shaft sleeve, the shaft and the shaft sleeve are used as the inner ring and the outer ring of a cylindrical roller bearing, a four-step cylindrical surface is arranged on the shaft, a holding frame and a cylindrical roller are installed on the steps of the shaft, an end cover is installed outside the cylindrical roller, an O-ring is installed on the outer diameter of the end cover, a seal used for the shaft is installed on the inner diameter, and a gasket and a hole retaining ring are installed outside the end cover in sequence. The high speed backing roll bearing constituent has the advantages of high assembly precision, strong bearing capacity, small starting torque, quick and convenient installation, simple maintenance and grinding and long service life, thereby providing a reliable guarantee for high speed straightening.

Description

High speed back-up roll bearing constituent element

Technical field

The utility model relates to the support roll in various types of stretching-bending straighteners.

Background technique

Development along with society, the demand of accurate flat cold-rolled sheet constantly increases, straightness to thin plate requires strict more, stretching-bending straightener (be called for short straightening machine) is the equipment for straightening that improves plate shape the best known at present, thereby it is widely used, for reducing cost, improve output, by improving aligning speed is unique channel, the highest aligning speed of domestic present employing is 350m/min, but following problem often appears in the support roll of one of its critical component: 1, when aligning speed is 350m/min, the support roll rotating speed can be near 2000RPM, lubricating grease leaks easily, the plate face of making dirty on the one hand, and the scarce lubricating grease of bearing race internal cause causes heating and then burns bearing to death on the other hand; When 2, resistance tight when sealing or bearing itself is big, situation with motionless work roll will occur if aligning thickness is thin plate below the 0.2mm, skidding between them will cause that the plate face pulls, and the working life of work roll will be very short; 3, maintenance or reconditioning difficulty mainly are because original structure dismounting difficulty is easy to dismount badly, and particularly Mi Feng breakage can cause foreign matters such as the dirt of intaking in the support roll after the reconditioning, and the stuck situation of bearing will frequently take place.Above problem has had a strong impact on the working stability of straightening machine, and it is very difficult to rethink raising aligning speed.

Summary of the invention

The purpose of this utility model is to provide a kind of assembly precision height; Bearing capacity is strong; Detent torque is very little; Quick and easy for installation; Maintenance and reconditioning are simple and easy, the high speed back-up roll bearing constituent element of long service life.

Technical solution of the present utility model is: a kind of back-up roll bearing constituent element, comprise axle and axle sleeve, it is characterized in that described bearing constituent element also comprises retainer, cylindrical roller, end cap, O type circle, rubber seal, packing ring, hole back-up ring, axle and axle sleeve are as roller bearing inner ring and outer ring, axle is provided with four step cylndrical surface, retainer and cylindrical roller are housed on the pillow block rank, end cap is equipped with in the cylindrical roller outside, O type circle is housed on the end cap external diameter, axle is housed with sealing on the internal diameter, packing ring and hole back-up ring are housed outside the end cap successively.

Retainer described in the utility model technical solution is contained on the cylinder step on the axle, and cylindrical roller is packed in the breach of two misarrangement positions on the retainer excircle.

Rubber seal described in the utility model technical solution is thin lip shape.

Axle two ends described in the utility model technical solution are provided with and cooperate the fixedly plane of usefulness and the radial hole of using with bolton with roller seat.

Retainer described in the utility model technical solution adopts brass material to make.

The utility model adopts cylindrical roller to bear radial load and thrust load, two ends adopt light-duty axle to reach the splendid effect of sealability with rubber seal and in conjunction with little gap rigid seal, because cylindrical roller has the brass retainer guiding of optimization to isolate, no matter be underloading or heavy duty, its rotational resistance is all relatively very little.Such sealing and bearing structure guarantee can not skid between plate and work roll when the thin plate of aligning 0.1～0.2mm, and belt speed is in 450m/min the time, and bearing can be worked reliably.More domestic straightening machines adopt water spray technology, and general support roll sealing is often only adopted clearance seal in order to satisfy the little purpose of resistance, and the possibility of water inlet will be very big in the bearing like this.The characteristics of sealing configuration of the present utility model are: little gap rigid seal (packing ring) can keep off the water dust of the overwhelming majority outside, after even the water dust of minute quantity enters, also can be touched the formula rubber seal blocks, when water dust gather a certain amount of after, can throw away from the matching gap between packing ring and roller shell under the centrifugal action that high speed rotating produced, thereby avoid the destruction of water dust rubber seal.Thereby this sealing configuration reliability under the water dust working environment is high.The plane and the hole at axle two ends are that back-up roll bearing constituent element and roller seat are used with bolton, and this structural type has following advantage: 1. install fast; 2. the location accurately can not become flexible.Because the utility model assembly precision height, bearing capacity is strong, detent torque is little, quick and easy for installation, maintenance and reconditioning is simple and easy, long service life, therefore, for aligning at a high speed provides reliable guarantee.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the schematic perspective view of retainer;

Fig. 3 is that Figure 1A-A is to cut-away view.

The tool present embodiment

As shown in Figure 1, 2, 3, the back-up roll bearing constituent element comprises axle 2 and axle sleeve 1, also includes retainer 3, cylindrical roller 4, end cap 5, O type circle 6, rubber seal 7, packing ring 8 and hole back-up ring 9, axle 2 and axle sleeve 1 are as the inner ring and the outer ring of roller bearing, axle 2 is provided with four step cylndrical surface, retainer 3 and cylindrical roller 4 are housed on the step of axle 2, step cylndrical surface on the axle 2 is as the raceway of roller bearing, and guiding cylindrical roller 4 is played in its bi-side; Retainer 3 is contained on the step cylndrical surface of axle on 2 vertically, retainer 3 peripheries circle is gone up the breach of being arranged by two misarrangement positions and is formed, as shown in Figure 2, cylindrical roller 4 indentation, there on the retainer 3 of radially packing into is separated adjacent cylindrical roller 4 by retainer 3, retainer 3 is axially by cylindrical roller 4 location at two ends, radial bore is located with the step of axle 2, and retainer 3 adopts brass materials to make, therefore, no matter underloading is heavy duty still, the rotational resistance of cylindrical roller 4 is all relatively very little; End cap 5 is equipped with in the outside of cylindrical roller 4, O type circle 6 is housed on end cap 5 external diameters, axle rubber seal 7 is housed on the internal diameter, rubber seal 7 is thin lip shape, end cap 5 outsides are equipped with packing ring 8 and hole back-up ring 9 successively, and packing ring 8 is the rigid seal packing ring, and this little gap rigid seal packing ring 8 can keep off the water dust of the overwhelming majority outside, after even the water dust of minute quantity enters, also can be touched formula rubber seal 7 and block.When water dust gather a certain amount of after, can be under the centrifugal action that high speed rotating produced throw away, thereby avoid the destruction of water dust rubber seal 7 from the matching gap of 1 on packing ring 8 and axle sleeve; Stretch out at axle 2 to be provided with on the two ends of axle sleeve 1 and cooperate the fixedly plane of usefulness and the radial hole of using with bolton with roller seat, as shown in Figure 3.

Claims (5)

1, a kind of high speed back-up roll bearing constituent element, comprise axle (2) and axle sleeve (1), it is characterized in that described back-up roll bearing constituent element also comprises retainer (3), cylindrical roller (4), end cap (5), O type circle (6), rubber seal (7), packing ring (8) and hole back-up ring (9), axle (2) and axle sleeve (1) are as the inner ring and the outer ring of roller bearing, axle (2) is provided with four step cylndrical surface, retainer (3) and cylindrical roller (4) are housed on axle (2) step, end cap (5) is equipped with in cylindrical roller (4) outside, on end cap (5) external diameter O type circle (6) is housed, axle is housed with rubber seal (7) on the internal diameter, packing ring (8) and hole back-up ring (9) are housed outside the end cap (5) successively.

2, high speed back-up roll bearing constituent element according to claim 1 is characterized in that said retainer (3) is contained on the cylinder step of axle on (2), and cylindrical roller (4) is packed in the breach of two misarrangement positions on retainer (3) excircle.

3, high speed supporting roller bearing unit according to claim 1 is characterized in that said rubber seal (7) is thin lip shape.

4, high speed supporting roller bearing unit according to claim 1 is characterized in that said axle (2) two ends are provided with and cooperates the fixedly plane of usefulness and the radial hole of using with bolton with roller seat.

5, high speed supporting roller bearing unit according to claim 1 is characterized in that said retainer (3) adopts brass material to make.

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