CN203948488U - A special bearing for tension leveling machine - Google Patents

Abstract

A special bearing for a withdrawal and straightening machine comprises a mandrel, an outer ring, a middle retainer ring, a rolling body, a retainer, a thrust ball bearing, a spring retainer ring, a sealing retainer ring, an O-shaped sealing ring, a steel rib-shaped rubber sealing ring and a plug. The two ends of the mandrel are respectively provided with a thrust ball bearing, the mandrel is sleeved with an outer ring, and the outer ring is supported on the thrust ball bearings at the two ends of the mandrel and is positioned through a spring retainer ring. A middle retainer ring is arranged between the outer ring and the mandrel, three retainers are respectively arranged between the outer rings on two sides of the middle retainer ring and the mandrel, and six groups of rolling bodies are respectively arranged in the retainers on two sides. An O-shaped sealing ring and a sealing retainer ring are arranged between the two ends of the outer ring and the thrust ball bearing for sealing, steel rib type rubber sealing rings are arranged at the two ends of the mandrel, and a lubricating channel plug is arranged at the two ends of the mandrel. The utility model discloses a rolling element does not receive the flange restriction, and the inside free state that becomes of rolling element bearing, axial force transmit through the axle and give thrust ball bearing, eliminate axial force, and the bearing can be in normal operation under the uneven condition of atress.

Description

A kind of withdrawal straightening machine special bearing

Technical field

The utility model relates to bearing manufacturing technology field, particularly relates to a kind of withdrawal straightening machine special bearing.

Background technique

Withdrawal straightening machine upper support bearing before improving, employing four row completely fill roller, Packed structure is established at two ends.Because there is following problem in bearing structure; 1) bearing roller is full dress, so limit speed is not high.2) bearing can not bear axial force, and when bearing is subject to axial force, rolling element end face and rib produce friction, makes rolling element tired, and causes bearing failure.Therefore 3) axle is provided with raceway, reduces the intensity of axle and counter-bending.4) in use oiling of bearing, makes bearing lose efficacy in advance because lubricating factor.As shown in Figure 2.

Model utility content

The technical problems to be solved in the utility model is, provide on a kind of axle raceway manufacturing procedure simple, man-hour is short, raceway size easily guarantees, the rate of reducing the number of rejects and seconds, save cost of production, rolling element is not limited by rib, stops rolling element and presss from both sides the withdrawal straightening machine special bearing of stubbornly refusing rotation and causing bearing locking phenomenon.

The technological scheme adopting is:

A withdrawal straightening machine special bearing, comprises axle, outer ring, guide ring, rolling element, retainer, thrust ball bearing, check ring, Sealing shield ring, O RunddichtringO, reinforcing bar type rubber seal, plug.Thrust ball bearing is all equipped with at described axle two ends, axle overcoat outer ring, and described outer ring is supported on the thrust ball bearing at axle two ends, and locates by check ring.Intermediate portion between described outer ring and axle arranges a guide ring, lays respectively three steel pressing cages between outer ring, guide ring both sides and axle, and six groups of rolling elements are respectively charged in the retainer of guide ring both sides.Between two ends, described outer ring and thrust ball bearing, fill O RunddichtringO and Sealing shield ring sealing.Described axle two ends are equipped with reinforcing bar type rubber seal and are awarded thrust ball bearing sealing, and the plug of lubrication channel is also equipped with at axle two ends.

Above-mentioned two ends, outer ring are provided with slope.

The utility model and in the past old airframe bearing (see figure 2) possess following advantage by contrast: 1) rolling element is provided with retainer, improve bearing limit speed; 2) rolling element increases to six row by four row, improves bearing capacity; 3) add the diameter of macro-axis, the intensity of raising axle and counter-bending.4) at bearing two ends, be provided with two thrust ball bearings, solve the problem of axial force.5) at axle two ends, be provided with oilhole, regularly repack with grease assurance bearing can be worked under good lubricating condition.6) on design slope, two ends, outer ring, reduce bearing edge stressed, improve bearing life.

Accompanying drawing explanation

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

Fig. 2 is four row full complement bearing structural representations before improving.

Embodiment

A withdrawal straightening machine special bearing, comprises axle 1, outer ring 2, guide ring 6, rolling element 4, retainer 5, thrust ball bearing 3, check ring 9, Sealing shield ring 7, O RunddichtringO 8, reinforcing bar type rubber seal 10, plug 11.Thrust ball bearing 3 is all equipped with at described axle 1 two ends, axle 1 overcoat outer ring 2, and described outer ring 2 is supported on the thrust ball bearing 3 at axle two ends, and locates by check ring 9.Intermediate portion between described outer ring 2 and axle 1 arranges a guide ring 6, lays respectively 5, six groups of rolling elements 4 of three steel pressing cages and be respectively charged in the retainer 5 of guide ring 6 both sides between guide ring 6 outer rings, both sides and axle.

2 two ends, described outer ring are provided with and reduce stressed slope 12, bearing edge, 3 dress O RunddichtringOs 8 of 2 two ends, outer ring and thrust ball bearing and Sealing shield ring 7 sealings.Described axle 1 two ends are equipped with reinforcing bar type rubber seal 10 and are awarded thrust ball bearing sealing, and the plug 11 of lubrication channel is also equipped with at axle 1 two ends, forms a kind of withdrawal straightening machine special bearing.

The utility model adopts six row rolling elements to replace former four row completely to fill the technological scheme of rolling element, press Fig. 2 when bearing bearing load is uneven, at this moment stressed heavy rolling element can produce axial force and rib generation friction, makes rolling element end face premature fatigue, and causes bearing to lose efficacy in advance.

Press Fig. 1 when bearing bearing load is uneven, rolling element is not limited by rib, and in the inner one-tenth of bearing free state, responsive to axial force, in axle, passes to thrust ball bearing by axle, eliminates axial force, and bearing can run well the in the situation that of unbalance stress.

By Fig. 2 structure axle neutral position, be provided with four raceways, in course of working, four row raceways are processed respectively, and operation is loaded down with trivial details, and man-hour is oversize, and the uniformity of raceway size is difficult to assurance, and reject rate is very high, cause cost of production to increase.Raceway diameter dimension is little, and when bearing load, the counter-bending reduction of axle narrows down furrow width, causes rolling element to be stubbornly refused to rotate by folder, causes bearing locking, causes shutdown, affects user and produces.

By the whole neutral position of Fig. 1 structure axle, be raceway, the disposable size that is worked into, operation is simple, and man-hour is short, and raceway size is very easy to guarantee, and the rate of reducing the number of rejects and seconds is saved cost of production.Without rib raceway diameter dimension, strengthen, improve the counter-bending and intensity of axle, rolling element is not limited by rib, stops rolling element folder and stubbornly refuses rotation and cause the phenomenon that bearing dies of a sudden illness to occur.

Claims (2)

1. a withdrawal straightening machine special bearing, comprise axle (1), outer ring (2), guide ring (6), rolling element (4), retainer (5), thrust ball bearing (3), check ring (9), Sealing shield ring (7), O RunddichtringO (8), reinforcing bar type rubber seal (10), plug (11), thrust ball bearing (3) is all equipped with at axle (1) two ends described in it is characterized in that, axle (1) overcoat outer ring (2), outer ring (2) is supported on the thrust ball bearing (3) at axle two ends, and by check ring (9) location, intermediate portion between outer ring (2) and axle (1) arranges a guide ring (6), between guide ring (6) outer ring, both sides and axle, lay respectively three steel pressing cages (5), six groups of rolling elements (4) are respectively charged in the retainer (5) of guide ring (6) both sides, between (2) two ends, outer ring and thrust ball bearing (3), fill O RunddichtringO (8) and Sealing shield ring (7) sealing, axle (1) two ends are equipped with reinforcing bar type rubber seal (10) and are awarded thrust ball bearing sealing, the plug (11) of lubrication channel is also equipped with at axle (1) two ends.

2. a kind of withdrawal straightening machine special bearing according to claim 1, is characterized in that described two ends, outer ring (2) are provided with slope (12).