CN202402475U

CN202402475U - Low-friction three-row cylindrical roller bearing

Info

Publication number: CN202402475U
Application number: CN2012200044222U
Authority: CN
Inventors: 郝文路; 赵俊飞; 杨书菊
Original assignee: LUOYANG XINQIANGLIAN SLEWING BEARING CO Ltd
Current assignee: LUOYANG XINQIANGLIAN SLEWING BEARING CO Ltd
Priority date: 2012-01-06
Filing date: 2012-01-06
Publication date: 2012-08-29
Anticipated expiration: 2022-01-06

Abstract

A low-friction three-row cylindrical roller bearing comprises an outer ring, an inner ring, a sealing ring, a radial retainer and a thrust retainer. A radial roller, a first thrust roller and a second thrust roller are disposed between the inner ring and the outer ring, a drainage groove which is of a V-shaped structure is arranged on each of the radial retainer and the thrust retainer, and both two inclined planes of each drainage groove are provided with guiding grooves. The guiding grooves are symmetrically arranged on the two opposite inclined planes of each drainage groove, lubricating oil flows through the bottom of each groove and uniformly flows to two sides of the drainage groove along the guiding grooves arranged on the two inclined planes of the drainage groove under a work condition that the bearing is in heavy load, running stability of the bearing is maintained by the aid of order flowing of the lubricating oil, accordingly, instability of disordered motion of the lubricating oil can be greatly reduced in a guiding process, and a vibration reduction effect of the bearing is improved.

Description

A kind of low friction three-row cylinder roller bearing

Technical field

The utility model relates to a kind of extra large size bearing, a kind of specifically low friction three-row cylinder roller bearing.

Background technique

At present; Bear at the same time axially, often adopt the three-row cylinder roller bearing as rotary supporting part in the working environment of radial load and tilting moment; Conventional three-row cylinder roller bearing in use has following drawback: one of which, radial roller do not have the gap and are arranged on radially in the raceway groove; Retainer is positioned at outside the groove; This structure radial roller that in use weares and teares is very fast, just makes radial roller heavy wear in the very short time, the working life of therefore having reduced this class bearing using; Two, each end face of the used retainer of each rolling element is smooth surface; Lubricant oil is infused between retainer and the bearing enclose and is used to lubricate; Yet extra large size bearing is in use really not so and since this class bearing in use need bear bigger axially, radial load and tilting moment, load is carried on the retainer greatly; Be easy to make the damage of retainer, the working life of having reduced extra large size bearing.

The model utility content

The purpose of the utility model is to be the deficiency that solves the problems of the technologies described above, and a kind of low friction three-row cylinder roller bearing is provided, and this bearing has significantly reduced vibration, improves antiwhip.

The utility model is the deficiency that solves the problems of the technologies described above; The technological scheme that is adopted is: a kind of low friction three-row cylinder roller bearing; Comprise outer ring, inner ring, seal ring, radially retainer and thrust retainer; Between inner ring and outer ring, be provided with radial roller, the first thrust roller and the second thrust roller, the first thrust roller and the second thrust roller thrust retainer through separately respectively are arranged in the thrust raceway groove; Described radially retainer is provided with the support body I of annular; On the circumferential surface of support body I, evenly be provided with the pocket hole that radial roller is installed; Described thrust retainer is provided with the support body II of annular; On the end face of support body II, evenly be provided with the pocket hole of installed thrust roller; It is characterized in that: described radial roller is arranged on radially in the raceway groove through retainer radially, and radially axial two end faces of retainer contact with the sidewall of raceway groove radially, and the axial two ends of radial roller have the gap with the sidewall of raceway groove radially;

On upper-end surface, lower end surface and the inner peripheral surface of support body I, all evenly be provided with the drainage trough I; Spacing is 20-30 ㎜ between the groove top of two adjacent drainage trough I; The drainage trough I that wherein is arranged on support body I upper-end surface and lower end surface radially is provided with along the support body I, and the drainage trough I of support body I inner peripheral surface axially is provided with along the support body I, and described drainage trough I is a V-shaped groove; The angle of V-shaped groove is 160 °; Groove depth 1.5-2 ㎜ are arranged with the guide slot I on two plane of inclination of V-shaped groove, the direction of guide slot I is extended to the groove top from the bottom land of drainage trough I;

On upper-end surface, lower end surface and the inner peripheral surface of support body II, all evenly be provided with the drainage trough II; Spacing is 20-30 ㎜ between the groove top of two adjacent drainage trough II; The drainage trough II that wherein is arranged on support body II upper-end surface and lower end surface radially is provided with along the support body II, and the drainage trough II of support body II inner peripheral surface axially is provided with along the support body II, and described drainage trough II is a V-shaped groove; The angle of V-shaped groove is 160 °; Groove depth 1.5-2 ㎜ are arranged with the guide slot II on two plane of inclination of V-shaped groove, the direction of guide slot II is extended to the groove top from the bottom land of drainage trough II.

The beneficial effect of the utility model is:

One of which, original three-row roller bearing all directly are positioned at radial roller radially in the raceway groove; Radial roller two ends vertically contact with raceway groove inwall radially; Under heavy load, be easy to wearing and tearing; The radial roller of the utility model is arranged on radially in the raceway groove through retainer radially, radially retainer radially Roller Shaft to two ends contact with the inwall of raceway groove radially, radial roller two ends vertically have the gap with the inwall of raceway groove radially; This kind combination cooperates the retainer of special construction to play good effect; On upper-end surface, lower end surface and the inner peripheral surface of radially retainer and thrust retainer, all evenly be provided with drainage trough respectively; Described drainage trough is a V-shaped groove, when the angle of V-shaped groove is 160 °, and groove depth 1.5-2 ㎜; Spacing is 20-30 ㎜ between the groove top of two adjacent drainage troughs; The oil film better effects if that form this moment, the drainage trough of this structure and in loading process, can play beyond thought effect simultaneously, as the oil film in the V-shaped groove can produce a kind of elastic resistance in extrusion process when receiving strong load or enormous impact; This drag is not only subdued a part of load; And in the power transmittance process, avoid retainer directly to receive more energetically and damage, thereby improved this class bearing effectiveness in vibration suppression greatly, improve antiwhip and working life.

Two, on two opposing inclined faces of drainage trough, be symmetrical set guide slot, lubricant oil is stored in the groove, when this retainer receives certain load; Lubricant oil relies on flowing in order of lubricant oil to keep the stability of bearing operation, so can reduce the unstability of lubricant oil disordered motion greatly in the guided procedure through bottom land and evenly mobile to both sides along the guide slot of two plane of inclination settings; Improve the effectiveness in vibration suppression of this class bearing, and owing to be provided with guide slot, faster in the speed of retainer and bearing enclose surface of contact formation oil film; Evidence: this structure makes bearing reduce friction more than 50% in inside; Reduce heating, the conventional Temperature bearing has reduced by 15-20 ℃ in the using process, reduces noise and reaches 10 decibels; Significantly reduce vibration, improved antiwhip.

The drainage trough that three, is provided with on this retainer also helps the storage and the revolution of lubricant oil; Reduce the friction between retainer and the raceway; The lubricant oil that the arc oil duct stores can constantly discharge lubricant oil when pivoting support turns round, keep good lubricating effect, and the arc oil duct has effectively improved the lubrication effect of pivoting support; Reduce the wearing and tearing between roller and the raceway, increase the life-span of pivoting support.

Description of drawings

Fig. 1 is the structure sectional view of the utility model.

Fig. 2 is the set-up mode schematic representation of radial roller in the utility model.

Fig. 3 is the plan view of retainer radially.

Fig. 4 is the plan view of retainer radially.

Fig. 5 is the partial enlarged drawing of A among Fig. 3.

Fig. 6 is the partial enlarged drawing of B among Fig. 3.

Fig. 7 is the partial enlarged drawing of C among Fig. 4.

Fig. 8 is the structural representation of drainage trough I.

Fig. 9 is the plan view of thrust retainer.

Figure 10 is the left view of thrust retainer.

Figure 11 is the partial enlarged drawing of D among Fig. 8.

Figure 12 is the partial enlarged drawing of E among Fig. 9.

Figure 13 is the structural representation of drainage trough II.

Mark among the figure: 1, outer ring, 2, inner ring, 201, first inner ring, 202, second inner ring, 3, seal ring; 4, radial roller, 5, retainer radially, 501, the support body I, 502, the drainage trough I; 503, guide slot I, 6, raceway groove radially, 7, the first thrust roller, 8, the second thrust roller; 9, thrust retainer, 901, the support body II, 902, the drainage trough II, 903, the guide slot II.

Embodiment

As shown in the figure, a kind of low friction three-row cylinder roller bearing comprises inner ring 2, outer ring 1 and seal ring 3, between inner ring 2 and outer ring 1, is provided with the first thrust roller 7, the second thrust roller 8 and radial roller 4, and is as shown in Figure 1; Fig. 1 is the sectional view of this bearing; Because bearing is a symplex structure; Fig. 1 is merely the half the of bearing; Be made up of outer ring, inner ring and seal ring, inner ring 2 is made up of first inner ring 201 and second inner ring, 202 two-part, on the inner peripheral surface of outer ring 1, is provided with positioning boss; The upper and lower end face of positioning boss constitutes two thrust raceways with first inner ring and second inner ring respectively; The first thrust roller and the second thrust roller are arranged in the raceway separately through the thrust retainer respectively, constitute between the outer peripheral surface of positioning boss and first inner ring 201 and second inner ring 202 on the outer ring 1 radially in the raceway groove 6, and be as shown in Figure 2: radial roller 4 is arranged on radially in the raceway groove 6 through retainer 5 radially; Radially axial two end faces of retainer 5 contact with the sidewall of raceway groove 6 radially, and the axial two ends of radial roller 4 have the gap with the sidewall of raceway groove 6 radially;

On upper-end surface, lower end surface and the inner peripheral surface of support body I 501, all evenly be provided with drainage trough I 502; Spacing is 20-30 ㎜ between the groove top of two adjacent drainage trough I 502; The drainage trough I 502 that wherein is arranged on support body I 501 upper-end surfaces and lower end surface radially is provided with along support body I 501, and the drainage trough I 502 of support body I 501 inner peripheral surfaces axially is provided with along support body I 501, and described drainage trough I 502 is a V-shaped groove; The angle of V-shaped groove is 160 °; Groove depth 1.5-2 ㎜ are arranged with guide slot I 503 on two plane of inclination of V-shaped groove, the direction of guide slot I 503 is extended to the groove top from the bottom land of drainage trough I 502;

On upper-end surface, lower end surface and the inner peripheral surface of support body II 901, all evenly be provided with drainage trough II 902; Spacing is 20-30 ㎜ between the groove top of two adjacent drainage trough II 902; The drainage trough II 902 that wherein is arranged on support body II 901 upper-end surfaces and lower end surface radially is provided with along support body II 901, and the drainage trough II 902 of support body II 901 inner peripheral surfaces axially is provided with along support body II 901, and described drainage trough II 902 is a V-shaped groove; The angle of V-shaped groove is 160 °; Groove depth 1.5-2 ㎜ are arranged with guide slot II 903 on two plane of inclination of V-shaped groove, the direction of guide slot II 903 is extended to the groove top from the bottom land of drainage trough II 902.

The utility model is provided with guide slot I guide slot II on drainage trough I and drainage trough II, the shape of guide slot I guide slot II is preferably used arcuate furrow, and other groove shape structures all can; During bearing working, lubricant oil is stored in drainage trough I and the drainage trough II, when this retainer receives certain load; Lubricant oil evenly flows to both sides through the bottom land of drainage trough and the guide slot that is provided with along two plane of inclination, relies on flowing in order of lubricant oil to keep the stability of bearing operation, so can reduce the unstability of lubricant oil disordered motion greatly in the guided procedure; Improve the effectiveness in vibration suppression of this class bearing, and owing to be provided with guide slot, faster in the speed of retainer and bearing enclose surface of contact formation oil film; Evidence: this structure makes bearing reduce friction more than 50% in inside; Reduce heating, the conventional Temperature bearing has reduced by 15-20 ℃ in the using process, reduces noise and reaches 10 decibels; Significantly reduce vibration, improved antiwhip.

Claims

1. one kind is hanged down friction three-row cylinder roller bearing; Comprise outer ring (1), inner ring (2), seal ring (3), radially retainer (5) and thrust retainer (9); Between inner ring (2) and outer ring (1), be provided with radial roller (4), the first thrust roller (7) and the second thrust roller (8), the first thrust roller (7) and the second thrust roller (8) the thrust retainer (9) through separately respectively are arranged in the thrust raceway groove; Described radially retainer (5) is provided with the support body I (501) of annular; On the circumferential surface of support body I (501), evenly be provided with the pocket hole that radial roller is installed; Described thrust retainer (9) is provided with the support body II (901) of annular; On the end face of support body II (901), evenly be provided with the pocket hole of installed thrust roller; It is characterized in that: described radial roller (4) is arranged on radially in the raceway groove (6) through retainer (5) radially, and radially axial two end faces of retainer (5) contact with the sidewall of raceway groove (6) radially, the axial two ends of radial roller (4) and radially the sidewall of raceway groove (6) have the gap;

On upper-end surface, lower end surface and the inner peripheral surface of support body I (501), all evenly be provided with drainage trough I (502); Spacing is 20-30 ㎜ between the groove top of two adjacent drainage trough I (502); The drainage trough I (502) that wherein is arranged on support body I (501) upper-end surface and lower end surface radially is provided with along support body I (501); The drainage trough I (502) of support body I (501) inner peripheral surface axially is provided with along support body I (501); Described drainage trough I (502) is a V-shaped groove, and the angle of V-shaped groove is 160 °, groove depth 1.5-2 ㎜; On two plane of inclination of V-shaped groove, be arranged with guide slot I (503), the direction of guide slot I (503) is extended to the groove top from the bottom land of drainage trough I (502);

On upper-end surface, lower end surface and the inner peripheral surface of support body II (901), all evenly be provided with drainage trough II (902); Spacing is 20-30 ㎜ between the groove top of two adjacent drainage trough II (902); The drainage trough II (902) that wherein is arranged on support body II (901) upper-end surface and lower end surface radially is provided with along support body II (901); The drainage trough II (902) of support body II (901) inner peripheral surface axially is provided with along support body II (901); Described drainage trough II (902) is a V-shaped groove, and the angle of V-shaped groove is 160 °, groove depth 1.5-2 ㎜; On two plane of inclination of V-shaped groove, be arranged with guide slot II (903), the direction of guide slot II (903) is extended to the groove top from the bottom land of drainage trough II (902).