CN2201186Y

CN2201186Y - 4-range conical roller bearing for rolling mill

Info

Publication number: CN2201186Y
Application number: CN 93239722
Authority: CN
Inventors: 文恒; 郑远中; 张秀萍; 何雷
Original assignee: CHENGDU HEAVY BEARING INST
Current assignee: CHENGDU HEAVY BEARING INST
Priority date: 1993-12-17
Filing date: 1993-12-17
Publication date: 1995-06-21
Anticipated expiration: 2003-12-17

Abstract

The utility model relates to a four-row conical roller bearing, which is a special bearing for the supporting roller of a large scale rolling machine with a medium plate, composed of an inner ring, an outer ring, a second outer ring, a roller, a big gasket of a cage, a small gasket of a cage, a supporting column, an inner spacing ring, an outer spacing ring, etc. Owing to the adoption of a newly suggested limit designing method, the diameter and the length of the roller are enlarged and the number for positioning rollers is reduced. When the outside diameter of the bearing is 1220 mm, inner diameter is 750 mm, and width is 840 mm, the diameter of the roller is 140.597, the length of the roller is 151.9 mm, and the half-cone angle of the roller psi is 1 DEG and 15 seconds; the number of each row of the rollers is 22 to make the rated dynamic load of a novel bearing reaches to 27060 KN which is 1.45 times greater than that an original value 18590KN and is 3.5 times greater than that of the original value.

Description

4-range conical roller bearing for rolling mill

A kind of four-row tapered roller bearing belongs to extra large size bearing.Be mainly used in iron and steel metallurgical industry cut deal large-sized rolling mills and make the backing roll special bearing.

The four-row tapered roller bearing of dress usefulness adopts the product of out-of-date methods design more on the past milling train, and promptly the bearing roller diameter is little, and length is short, quantity rated loads many, bearing are low.Domestic each steel mill adopts this kind bearing short service life, and general 3～6 months, damaged in long 6～8 months, cause Bearing Consumption many, it is long non-cutting time that roll change consumes accumulation, influences output of a factory, cost.

The purpose of this utility model is for addressing the above problem, a kind of novel four-row tapered roller bearing is provided, and its dynamic load increases, ILS.

The purpose of this utility model realizes with following mode.Adopt the new limit design method that proposes, the product structure of design is compared with existing bearing of the same type, and roller diameter and length increase, roller quantity reduces, be the novel following formation of four-row tapered roller bearing: have 8, two inner rings 6 in 4, one second outer rings, two outer rings; Between two inner rings, establish cone spacer 7; Between the outer ring and second outer ring, establish two outer ring spacers 9; Every row circumferentially evenly are provided with a plurality of rollers 3 between inner ring and outer ring, each roller centre is passed a pillar 2, the two ends that every pillar stretches out roller are that retainer small washer 1 and retainer large washer 5 be connected and fixed with two porous annulus that are axle with the bearing rotating shaft respectively, it is characterized in that bearing outside diameter D is 1220mm, inner diameter d is 750mm, the wide B of bearing is 840mm, the diameter △ of roller 3 is 140.597mm, the length L of liquid 3 is 151.9mm, the semi-cone angle ψ of roller 3 be 1 ° 15 ', it is 22 that roller 3 is provided with quantity Z at circumferential every row.

Fig. 1 the utility model structure chart

Fig. 2 roller 3 part drawings

Fig. 3 pillar 2 and retainer small washer 1 riveted joint figure

See Fig. 1, sequence number 1～9, the title of label symbol D, d, B is described in the above, and in addition, the utility model has also adopted and has increased the poor of roller 3 ball basal planes and inner ring rib sphere curvature radius; The roller belts convexity, inner ring 6 end faces are driven radially oil groove of crescent, and interior pore area spiral is surveyed groove.

See Fig. 2, △ is a roller diameter, and L is a roller length, and ψ is the roller semi-cone angle.

See Fig. 3, pillar 2 adopts riveted structure with retainer small washer 1.

The utility model is owing to adopt above-mentioned new structural shape, and the bearing rated load of design reaches 27060KN, is 1.45 times of initial value 18590KN, and the rated life time is 3.5 times of initial value.

Claims

1, a kind of four-row tapered roller bearing for rolling mill has two outer rings (4), one second outer ring (8), two inner rings (6); Between two inner rings, establish cone spacer (7); Between the outer ring and second outer ring, establish two outer ring spacers (9); Every row circumferentially evenly are provided with a plurality of rollers (3) between inner ring and outer ring, each roller centre is passed a pillar (2), the two ends that every pillar stretches out roller are that retainer small washer (1) and retainer large washer (5) be connected and fixed with two porous annulus that are axle with the bearing rotating shaft respectively, it is characterized in that bearing outside diameter (D) is 1220mm, internal diameter (d) is 750mm, bearing wide (B) is 840mm, the diameter (Δ) of roller (3) is 140.597mm, the length (L) of roller (3) is 151.9mm, the semi-cone angle (ψ) of roller (3) be 1 ° 15 ', every row roller (3) is 22 in that quantity Z circumferentially is set.

2,, it is characterized in that pillar (2) and retainer small washer (1) adopt riveted structure by the described roller bearing of claim 1.