CN2546104Y

CN2546104Y - Anti oil contamination straightening machine supporting roller

Info

Publication number: CN2546104Y
Application number: CN 02217195
Authority: CN
Inventors: 王军; 戴德文; 王振华
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2002-04-29
Filing date: 2002-04-29
Publication date: 2003-04-23
Anticipated expiration: 2012-04-29

Abstract

Disclosed is a supporting roller of an oil pollution prevention straightener, which includes a supporting roller outer cover, a supporting roller inner bushing, an end cap and a ball bearing; the ball bearing is arranged between the supporting roller outer cover and the supporting roller inner bushing, and the two ends are fixed and limited by the end cap; at least one groove for placing the sealing element is opened on the side wall of the supporting roller inner bushing; the side wall of the end cap and the inner ring of the end cap are respectively provided with a groove; a contact sealing piece is disposed between the supporting roller outer cover and the end cap, which comprises a sealing skeleton, an upper auxiliary lip and a spring which is arranged on the outer side face. Prepressing rubber sealing pieces are added on the supporting roller inner bushing and the inner ring of the end cap, which can avoid the oil seepage at the joint position, and the inner bushing has no oil hole; the utility model facilitates the assembling of the supporting roller effectively, eliminates the processing error and improves the comprehensive sealing effect and the service life of the supporting roller; the contact sealing design can avoid the oil from seeping at the joint of the supporting roller outer cover and the end cap; and the grease supplying method adopts the pre-filling form to extend the maintenance period and realize the sealing design with zero maintenance.

Description

Anti-greasy dirt straightener backing roll

Technical field

The utility model relates to a kind of straightener backing roll.

Background technology

The characteristics that both at home and abroad hot rolling line of iron and steel enterprise all has high-speed production, works continuously, control accuracy is high, finishing production line particularly, as last procedure of hot rolling technology control end product quality, the stable of its finishing leveller equipment performance will directly have influence on finished product output and quality.Along with the competition in market is growing more intense, each enterprise is all in the further raising of pursuing product quality and perfect.Yet we at first run into be exactly the greasy dirt coiled sheet problem that caused of finishing straightener day by day obviously and outstanding, perplex and hamper the further raising of product quality and rhythm of production.No pretension and uncompensated form that existing straightener backing roll design is adopted, mainly there are the following problems:

1. poor sealing performance, adopt the oiling design of on-the-spot oil nozzle, short period in the actual use refuels and the method for on-the-spot oil pump oil supply though satisfied, but half opening steel sealing ring does not have the compression seal effect behind oiling or replacing backing roll, drier oil all can overflow respectively from the inside and outside circle of end cap in the back that is squeezed at every turn, and the process working roll pollutes the surface of steel plate, not only formed the quality objection of a large amount of greasy dirt coiled sheets, and had influence on normal rhythm of production, cause an equipment difficult problem that is difficult to overcome.

2. maintenance time is long, the backing roll of prior art, it is to the oiling design of the on-the-spot oil nozzle of grease design employing, short period in the actual use refuels and the method for on-the-spot oil pump oil supply though satisfied, but, influenced effective performance of production capacity owing in batches big (HM06 is that 140, HM07.2 are that 252, HM08 are 50) makes maintenance time long.

3. maintenance period is short, the oil nozzle oiling that backing roll the adopted design of prior art, although the short period in having realized using refuels, after the high strength coupling of backing roll and working roll makes each oiling or changes backing roll, drier oil all is almost completely to overflow after being squeezed, and pass through surface and the lasting a few days that working roll pollutes steel plate, caused a large amount of greasy dirt coiled sheets.Overflowing of drier oil must cause short maintenance period, increased production cost virtually, and has influence on the normal production schedule and rhythm of production.

4. difficulty of processing height, the backing roll of prior art has 5 tank filler sleeves such as branch such as grade (generally having only the 5mm diameter) formation oiling chamber and communicates (as shown in Figure 1) with the rolling element oil pocket on the inner ring circumference, as process the grease operation of just can't carrying out normally giving not in place, difficulty (oil filler point must connect) also can take place in assembling.

In today of competition of market economy fierceness, straightener greasy dirt coiled sheet problem has become one of the bottleneck of the uncontrollable factor of the product quality of eliminating the effects of the act.

Summary of the invention

The purpose of this utility model is to design a kind of backing roll overcoat and end cap seam crossing oil impregnate avoided; Ease of assembly, sealing intensity height, sealing position wearing clearance compensation ability are strong, sealing effectiveness is stablized lasting, non-maintaining straightener backing roll.

For achieving the above object, the anti-greasy dirt straightener backing roll of the utility model design comprises cover, end cap, ball, seal in backing roll overcoat, the backing roll; Between described ball was arranged at and overlaps in backing roll overcoat, the backing roll, two ends were fixing spacing by end cap; Have the groove that at least one places seal on the described backing roll sidewall of the inside race; Described end cap sidewall has the groove that at least one can place seal; Between backing roll overcoat and end cap, contact seal is set.

Further, described end cap inner ring has the groove that at least one can place seal.

Described contact labyrinth seal comprises the sealing skeleton and goes up secondary lip and the spring that is arranged at lateral surface; The secondary lip of described sealing skeleton has a step.The outside secondary lip and on step can prevent dust, its skeleton has also increased the intensity of rubber seal and has prevented oil sealing to deviate from, but preloading spring compensate for wear amount is set.

Between overcoat and end cap, adopt the contact labyrinth seal that pretension, compensate function is arranged and have steel plate frame, on backing roll overcoat convex wall, have groove simultaneously; Except realizing dual function, multi-level sealing, elimination, compensation process and assemble error.

Described seal is the precompressed rubber seal.

Advantage of the present utility model is, adopt the non-maintaining multi-level pressure-resistant seal design and the Seal Design of pretension compensation, by pretension, compensate function being arranged and having the contact labyrinth seal design of steel skeleton, avoid backing roll overcoat and end cap seam crossing oil impregnate; Simultaneously set up the precompressed rubber seal, avoided the oil impregnate of interior cover of backing roll and backing roll end cap seam crossing at the contact position and the backing roll end cap inner ring place of backing roll inner ring both sides; And interior cover is not processed oil filler point; Made things convenient for effectively backing roll assembling, eliminated mismachining tolerance, the comprehensive sealing effect and the service life of simultaneously having improved backing roll again; Adopt pre-filling form and non-maintaining design for the grease mode, maintenance period is prolonged.The utlity model has that sealing intensity height, sealing position wearing clearance compensation ability are strong, sealing effectiveness is stablized lasting, non-maintaining advantage.

Description of drawings

Fig. 1 is the structural representation of existing straightener backing roll.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is the local enlarged diagram of existing straightener backing roll.

Fig. 4 is a local enlarged diagram of the present utility model.

The specific embodiment

As Fig. 2, shown in Figure 4, the anti-greasy dirt straightener backing roll of the utility model design comprises cover 5, end cap 3, ball 4 in backing roll overcoat 1, the backing roll; Described ball 4 is arranged at and overlaps in backing roll overcoat 1, the backing roll between 5, and two ends are fixing spacing by end cap 3; Have the groove 51 that to place seal 6 on cover 5 sidewalls in the described backing roll; Described end cap 3 sidewalls have the groove 31 that can place seal 7, end cap 3 inner rings have a groove 32, between backing roll overcoat 1 and end cap 3, contact seal 2 is set, contact seal 2 comprises sealing skeleton 21 and goes up secondary lip 22 and the spring 23 that is arranged at lateral surface that secondary lip 22 has a step 221; Described

seal

6,7 is the precompressed rubber seal.

Full-bodied high temperature-resistant grease is filled in the oil pocket 8 that overlaps in the ball 4 and backing roll overcoat 1, backing roll on the anti-greasy dirt straightener backing roll between 5 in advance, can reaches non-maintaining.Adopt full-bodied high temperature-resistant grease, can avoid the emulsification of grease.

Claims

1. anti-greasy dirt straightener backing roll comprises cover, end cap, ball in backing roll overcoat, the backing roll; Between described ball was arranged at and overlaps in backing roll overcoat, the backing roll, two ends were fixing spacing by end cap; It is characterized in that: have the groove that at least one places seal on the described backing roll sidewall of the inside race; Described end cap sidewall has at least one groove of placing seal; Between backing roll overcoat and end cap, contact seal is set.

2. anti-greasy dirt straightener backing roll as claimed in claim 1 is characterized in that: described end cap inner ring has the groove of a placement seal.

3. anti-greasy dirt straightener backing roll as claimed in claim 1 or 2 is characterized in that: described contact seal comprises the sealing skeleton and goes up secondary lip and the spring that is arranged at lateral surface.

4. anti-greasy dirt straightener backing roll as claimed in claim 3 is characterized in that: on the secondary lip of described sealing skeleton a step is arranged.

5. anti-greasy dirt straightener backing roll as claimed in claim 1 or 2, it is characterized in that: described seal is the precompressed rubber seal.

6. anti-greasy dirt straightener backing roll as claimed in claim 3, it is characterized in that: described seal is the precompressed rubber seal.