CN2050503U - Centripetal push double-layer kingpin bearing - Google Patents

Abstract

The utility model discloses a high efficiency, durable, heavy-load centripetal push double-layer needle bearing which is suitable for various load-carrying vehicles and machines. The centripetal push double-layer needle bearing is characterized in that components which are used to bear radial and axial loads are an inner and an outer layer needle bodies with bearing center sleeves; the axis lines of the inner and the outer layer needle bodies are mutually parallel, the axis lines of the inner and the outer layer needle bodies and a bearing inner ring are formed into a 10 DEG-12 DEG angle; the outer surface of each needle body is provided with two to three spiral shallow oil ditches; the bearing center sleeves and the outer ring are provided with two to three small through holes, and the outer surfaces of the bearing outer ring and the center sleeves are provided with roller paths. The centripetal push double-layer needle bearing can bear large radial and axial loads, and the utility model has the advantages of small abrasion and power consumption, long service life and high limit speed.

Description

Centripetal push double-layer kingpin bearing

The invention belongs to a kind of mechanical bearings---the double-deck needle bearing of centripetal thrust force specifically, is a kind of double-deck needle bearing of centripetal thrust force that is applicable to all kinds of load-carrying vehicles and machinery.

Centripetal thrust force garden taper roller bearing is arranged in the prior art, the combination needle bearing, the centripetal thrust force roller bearing all is an individual layer rolling body type bearing.They are in heavy duty, under the high-speed case, the rapid variation of usability, and the life-span shortens more, and the wearing and tearing power consumption increases severely.

The object of the present invention is to provide a kind of bearing capacity height, can bear axial, radial load simultaneously, but and the high speed long-term operation, working life is longer, and the wearing and tearing power consumption is reduced to existing various radial-thrust bearing greatly.

For achieving the above object, the present invention has done following improvement to existing combination needle bearing: with the needle roller structural reform of former single belt retainer is the needle roller body of bilayer zone retainer, and adds a bearing middle cover to separate between two-layer needle roller body and retainer thereof; Remove the thrust garden post roller part in the combination needle bearing; Change the needle roller body into the needle roller body axis becomes 10 °～12 ° with the bearing inner race axis angle by former axis and bearing inner race parallel axes; Two to three shallow oil ducts of spiral will be opened on the needle roller external surface; On bearing middle cover and bearing outer ring, open two to three small through hole.

The advantage of the double-deck needle bearing of the centripetal thrust force that the present invention proposes is tangible, because with the needle roller structural reform of single belt retainer is the needle roller body of bilayer zone retainer, and between two-layer needle roller body and retainer, add a bearing middle cover to separate, original once rolling is become twice rolling, the rotational velocity of every layer of needle roller body is descended greatly, the comprehensive friction factor of whole bearing reduces greatly, and improve working life greatly, and load reaches uniform; Owing to change former needle roller body axis and bearing inner race parallel axes into the needle roller body axis becomes 10 °～12 ° with the bearing inner race axis angle, and remove thrust garden post roller part, make the axis of bilayer zone retainer become the needle roller body at 10 °～12 ° of angles both to bear radially with the bearing inner race axis, bear thrust load again; Owing to have two to three shallow oil ducts of spiral on the needle roller surface, have two to three small through hole on bearing middle cover and the bearing outer ring, the lubricating condition of each parts of bearing is improved greatly.In a word, the wearing and tearing power consumption of the above-mentioned improved bearing of process reduces greatly than the other types bearing, and improve working life greatly, and running is steady, and limit speed is higher, can be widely used in all kinds of load-carrying vehicles and machinery, can be designed to the series product of standard.

Below in conjunction with just the present invention of accompanying drawing---the embodiment of the double-deck needle bearing of centripetal thrust force is described in further detail, thereby more can embody details of the present invention and advantage.

Referring to accompanying drawing, this is the present invention---the embodiment of the double-deck needle bearing of centripetal thrust force.It is by bearing inner race (1), internal layer cages for needle (2), and internal layer needle roller body (3), bearing middle cover (4), outer needle roller body retainer (5), outer needle roller body (6), bearing outer ring (7) is formed.The internal surface of bearing inner race (1) cooperates with axle journal, and internal layer needle roller body (3) and retainer (2) thereof are equipped with in the outside of bearing inner race (1); Internal layer needle roller body (3) outside bearing set middle cover (4); Outer needle roller body (6) and retainer (5) are equipped with in bearing middle cover (4) outside; Bearing outer ring (7) is sleeved on the outside of outer needle roller body (6).The axis of inside and outside layer needle roller body (3), (6) becomes 10 °～12 ° angles with the axis of bearing inner race (1), and the axis of inside and outside layer needle roller body is parallel to each other; Have two to three shallow oil ducts of spiral on the outer surface of inside and outside layer needle roller body; Have two to three small through hole on bearing middle cover (4) and the bearing outer ring (7); The outer surface of bearing inner race (1) and bearing middle cover (4) has the raceway of needle roller.This bearing can bear very big radial and axial load, and its wearing and tearing power consumption only is a thrust of the same type garden taper roller bearing simultaneously, 1/10～1/5 of combination needle bearing; Be thrust of the same type garden taper roller bearing working life, more than five times of roller bearing of combination, and limit speed can be enhanced about more than once.

Claims (2)

1, a kind of double-deck needle bearing of centripetal thrust force that is suitable for all kinds of load-carrying vehicles and machinery, it includes the bearing inner race that cooperates with axle journal, internal layer needle roller body and the retainer thereof that is installed in the bearing inner race outer surface, be contained in the bearing middle cover between inside and outside layer needle roller body and the retainer, be contained in outer needle roller body and retainer thereof on the outer surface of bearing middle cover, be sleeved on the bearing outer ring on the outer needle roller body.The invention is characterized in:

(1) inside and outside layer needle roller body and retainer thereof are housed between the above-mentioned inside and outside circle of bearing, and between inside and outside layer needle roller body and retainer thereof, a bearing middle cover are housed in addition;

(2) described inside and outside layer needle roller body axis is parallel to each other and becomes 10 °～12 ° angles with the axis of bearing inner race.

(3) have two to three shallow oil ducts of spiral on the described needle roller external surface, have two to three small through hole on bearing middle cover and the bearing outer ring;

(4) have raceway on the outer surface of described bearing inner race and bearing middle cover.

2, according to the double-deck needle bearing of the described centripetal thrust force of claim 1, it is characterized in that the internal surface of above-mentioned bearing inner race cooperates with axle journal, its outer surface contacts with internal layer liquid needle body; The outer surface that above-mentioned internal layer needle roller body and retainer thereof are contained in bearing inner race; Above-mentioned bearing middle cover is contained between inside and outside layer needle roller body and the retainer thereof; Have two to three shallow oil ducts of spiral on the outer surface of above-mentioned inside and outside layer needle roller body; Above-mentioned inside and outside layer needle roller body axis is parallel to each other and becomes 10 °～12 ° angles with the bearing inner race axis; Have raceway on the outer surface of above-mentioned bearing inner race and bearing middle cover; The outer surface of above-mentioned bearing middle cover contacts with outer needle roller body; Above-mentioned outer needle roller body and retainer are sleeved on the outer surface of bearing middle cover; Above-mentioned bearing outer ring is sleeved on outer needle roller body and the retainer thereof; Have two to three small through hole on above-mentioned bearing middle cover and the bearing outer ring.

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