CN201428735Y

CN201428735Y - Radial bearing

Info

Publication number: CN201428735Y
Application number: CN2009200200159U
Authority: CN
Inventors: 于陈良; 于海洋
Original assignee: ANQIU CITY PETROLEUM DRILLING MACHINERY FACTORY
Current assignee: ANQIU CITY PETROLEUM DRILLING MACHINERY FACTORY
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-03-24
Anticipated expiration: 2019-03-31

Abstract

The utility model discloses a radial bearing, which comprises an outer ring. An inner ring matched with the outer ring is arranged in the outer ring. The internal surface of the outer ring is coated with a hard alloy layer. The external surface of the inner ring is correspondingly coated with a hard alloy layer. Since the hard alloy layers are added on the contact surfaces of the inner ring and the outer ring of the radial bearing, the utility model has the advantages that the contact surfaces of the inner ring and the outer ring of the radial bearing have the performances of corrosion resistance, impact resistance and large bearable load, the service life of the radial bearing is prolonged, the performances of the radial bearing are guaranteed even through the radial bearing is used underharsh conditions, and the work efficiency of the machinery is greatly improved.

Description

A kind of radial bearing

Technical field

The utility model relates to a kind of bearing, is a kind of radial bearing specifically.

Background technique

In petroleum production machinery, radial bearing is a bearing commonly used, and the use of radial bearing can suppress radially moving with inclination of axle, and axle has been played the certain protection effect.But running up mechanically, radial bearing is applied very big axial and radial force, so, radial bearing is worn easily, be corroded so that damage, greatly reduce its working life, particularly in the petroleum production operation, if radial bearing damages, whole drilling rod need be proposed in oil well during replacing, exploitation work can not be continued, reduced the working efficiency of rig, improved cost of winning, so it is stronger corrosion-resistant that radial bearing is had, shock resistance, it is big to bear load, the characteristic of long service life is a present radial bearing problem to be solved.

The model utility content

Problem to be solved in the utility model provides a kind of corrosion-resistant, shock resistance, bear that load is big, the radial bearing of long service life.

For addressing the above problem, the technical solution adopted in the utility model is: a kind of radial bearing, comprise the outer ring, and be provided with the inner ring that matches with the outer ring in the outer ring, it is characterized in that: the internal surface of described outer ring scribbles hard alloy layer, and the outer surface correspondence of described inner ring scribbles hard alloy layer.

As a kind of improvement:

Described hard alloy layer is the coating that is fused into one and constituted by the hard alloy blocks of rule and scolder and affix.

As further improvement:

The thickness of described hard alloy layer is at least 2.5mm.

Described hard alloy layer covers 60% of inner surface area and inner ring exterior surface area respectively.

The utility model has increased hard alloy layer at the surface of contact of the inside and outside circle of radial bearing, make the surface of contact of the inside and outside circle of radial bearing corrosion-resistant, shock resistance arranged, born the big performance of load, also just increase the working life of radial bearing, even under harsh conditions, use, also can guarantee it self performance, improve mechanical working efficiency largely.

Below in conjunction with the drawings and specific embodiments the utility model is further specified.

Description of drawings

Accompanying drawing 1 is the utility model embodiment's a structural representation;

Accompanying drawing 2 is the structural representation of radial bearing outer ring among the utility model embodiment;

Accompanying drawing 3 is the structural representation of radial bearing inner ring among the utility model embodiment.

Among the figure: 1, outer ring; 2, inner ring; 3, hard alloy layer.

Embodiment

Shown in accompanying drawing 2 and accompanying drawing 3, a kind of radial bearing, comprise outer ring 1, be provided with the inner ring 2 that matches with the outer ring in the outer ring 1, the internal surface of outer ring 1 scribbles hard alloy layer 3, the outer surface correspondence of inner ring 2 scribbles hard alloy layer 3, and hard alloy layer 3 is the coatings that fused into one and constituted by the hard alloy blocks of rule and scolder and affix.

The thickness of hard alloy layer 3 is at least 2.5mm, and the utility model adopts the thickness of 2.5mm, and two-layer like this adding is exactly 5mm together, guarantees the wear resistance and the corrosion resistance of radial bearing surface of contact, has guaranteed the working life of radial bearing.In addition, alloy-layer is by after well-regulated hard alloy blocks and scolder and the affix fusing, is coated on the radial bearing, and alloy layer thickness increases, and certainly will cause the increase of cost of production, so that the thickness of hard alloy layer 3 also is difficult for is blocked up.

As shown in Figure 1, for guaranteeing that radial bearing is not corroded, should the area coverage of the inside and outside circle surface of contact of radial bearing will be guaranteed, generally between 50%-70%, hard alloy layer 3 of the present utility model cover respectively outer ring 1 inner surface area and inner ring 2 outer surfaces area 60%, so both can guarantee the corrosion resistance of radial bearing, save material again, reduce cost of production.

Claims

1, a kind of radial bearing, comprise outer ring (1), be provided with the inner ring (2) that matches with the outer ring in the outer ring (1), it is characterized in that: the internal surface of described outer ring (1) scribbles hard alloy layer (3), and the outer surface correspondence of described inner ring (2) scribbles hard alloy layer (3).

2, a kind of radial bearing as claimed in claim 1 is characterized in that: the thickness of described hard alloy layer (3) is at least 2.5mm.

3, a kind of radial bearing as claimed in claim 1 is characterized in that: described hard alloy layer (3) covers 60% of outer ring (1) inner surface area and inner ring (2) exterior surface area respectively.