CN202510548U - Roller knuckle bearing - Google Patents

Abstract

The utility model relates to a roller joint bearing, which is used in mechanical equipment and belongs to the field of general machinery. It is mainly composed of a bearing inner ring, a bearing outer ring and rollers. The inner surface of the bearing outer ring is an inner spherical surface; The outer surface of the inner ring of the bearing is an outer spherical surface; there are two arc-shaped raceways on the outer surface of the inner ring of the bearing; the rollers are installed on the cage, and are installed on the two arc-shaped raceways together with the cage ; There are sealing rings on both sides of the outer ring of the bearing, and two vertical oil delivery holes are opened on the upper end of the outer ring of the bearing. The utility model can be used for swinging motion with small load and high rotating speed, and has long service life.

Description

A roller joint bearing

technical field

The utility model relates to a roller joint bearing, which is used in mechanical equipment and belongs to the field of general machinery. the

Background technique

Joint bearings are widely used in engineering machinery, engineering hydraulic cylinders, forging machine tools, water conservancy machinery and other industries. Joint bearings can withstand radial loads, axial loads, or combined radial and axial loads. They are generally used for low-speed swing motions and low-speed rotary motions, and can also be used for tilting motions within a certain angle range. However, for movements with small swing and high speed, when ordinary joint bearings are used, the joint bearings often fail due to wear and pitting. the

At present, the spherical sliding contact area of ordinary joint bearings is large, and when the rotating speed of the bearing is high, the temperature of the lubricating oil will increase, so that the joint bearings will fail due to the failure of the lubricating oil. It can be considered to replace the sliding friction of the joint bearing with rolling friction, and the ordinary roller is easy to cause the loss of lubricating oil. When the bearing speed is high, it is easy to cause the failure of the bearing due to improper lubrication. Therefore, there is an urgent need to carry out structural transformation of the existing joint bearings so that they can be better applied to mechanical devices with small loads and high rotational speeds. the

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a roller joint bearing, which is used for a mechanical device with a small load and a high rotational speed for swinging motion. the

The technical solution adopted by the utility model is: the utility model is a roller joint bearing, which is mainly composed of a bearing inner ring, a bearing outer ring and rollers. The inner surface of the bearing outer ring is an inner spherical surface; the outer surface of the bearing inner ring is an outer spherical surface, and two arc-shaped raceways are arranged on the outer surface of the bearing inner ring; the rollers are installed on the cage, It is installed on two arc-shaped raceways together with the cage; there are sealing rings on both sides of the outer ring of the bearing, and two vertical oil delivery holes are opened on the upper end of the outer ring of the bearing, and the outlet of the lower end of the oil delivery hole is set on the bearing The position where the outer ring corresponds to the middle of the roller. the

The roller is drum-shaped, the middle part of the roller is a cylinder, and the two ends are arc-shaped; the radius of curvature of the arcs at both ends of the roller is smaller than that of the arc-shaped raceway on the inner surface of the outer ring of the bearing. the

The advantages of the utility model are: 1. A roller joint bearing of the utility model can be used for a swing motion with a small load and a high speed; 2. The service life of the roller joint bearing is long; 3. The utility model adopts There is a certain gap between the cylinder in the middle of the spherical roller and the arc track of the outer ring of the bearing and the inner ring of the bearing, which can store lubricating oil in practical applications. the

Description of drawings

Fig. 1 is the structural representation of a kind of roller joint bearing of the present utility model;

Fig. 2 is a structural schematic diagram of the roller of the utility model.

In the figure, 1 oil delivery hole, 2 bearing outer ring, 3 roller, 4 cage, 5 arc-shaped raceway, 6 bearing inner ring, 7 sealing ring. the

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. the

As shown in Figure 1, a roller joint bearing of the utility model is mainly composed of a bearing inner ring 6, a bearing outer ring 2 and a roller 3, the inner surface of the bearing outer ring 2 is an inner spherical surface; the bearing inner ring The outer surface of 6 is an outer spherical surface, and two arc-shaped raceways 5 are arranged on the outer surface of the inner ring 6 of the bearing; the roller 3 is installed on the cage 4, and is installed together with the cage 4 On the raceway 5; the two sides of the bearing outer ring 2 are provided with a sealing ring 7, and two vertical oil delivery holes 1 are opened on the upper end of the bearing outer ring 2, and the outlet of the lower end of the oil delivery hole 1 is set on the bearing outer ring 2 The position corresponding to the middle of roller 3. the

As shown in Figure 2, the roller 3 is in the shape of a waist drum, the middle part _of the roller 3 is a cylinder, and the two ends are arc-shaped; 2 The radius of curvature r ₁ of the arc raceway on the inner surface is small.

Claims (2)

1. a roller knuckle bearing mainly is made up of bearing inner race (6), bearing outer ring (2) and roller (3), and it is characterized in that: said bearing outer ring (2) internal surface is an inner ball surface; The outer surface of said bearing inner race (6) is an outer spherical surface; On the outer surface of bearing inner race (6), be provided with two arcuate groove (5); Said roller (3) is installed on the retainer (4), and is installed on two arcuate groove (5) with retainer (4); Bearing outer ring (2) both sides are provided with seal ring (7), have two vertical oil transportation holes (1) in the upper end of bearing outer ring (2), and the lower end outlet of oil transportation hole (1) is arranged on bearing outer ring (2) and corresponding position, roller (3) middle part.

2. a kind of roller knuckle bearing according to claim 1 is characterized in that: described roller (3) is the waist drum shape, and roller (3) middle part is a cylindrical body, and two ends are circular-arc; The radius of curvature r of the two end part circular arc of roller (3) ₂Radius of curvature r than bearing outer ring (2) internal surface arcuate groove ₁Little.

Images