CN202914525U - Strengthened tapered roller bearing - Google Patents

Abstract

The utility model relates to a strengthened tapered roller bearing, which comprises two inner rings, an inner spacing ring, an outer ring, two retainers and rollers, wherein the two inner rings are arranged in the outer ring side by side, the inner spacing ring is arranged between the two inner rings, the two retainers are arranged between the outer ring and the two inner ring, a dual rolling path is arranged on the inner wall of the outer ring, two rolling paths are arranged on the outer walls of the two inner rings respectively, the rollers are arranged in the retainers, the two retainers form components with corresponding inner rings respectively, and the components are assembled in the two rows of the rolling path of the outer ring. Compared with the prior art, the strengthened biserial tapered bearing is adopted to replace a common tapered bearing, is suitable for the heavy duty requirement of the coal machine industry, and is applied to coal cutter to enable the coal cutter to make improvement and reach the advanced level both at home and abroad.

Description

A reinforced tapered roller bearing

technical field

The invention relates to a bearing, in particular to a reinforced tapered roller bearing.

Background technique

The coal shearer is a large complex system integrating machinery, electricity and hydraulic pressure, and the working environment is harsh. If a failure occurs, the entire coal mining work will be interrupted, resulting in huge economic losses. With the development of the coal industry, the shearer has more and more functions, and its own structure and composition are becoming more and more complicated, so the reasons for the failure are also complicated. In the coal machine industry, bearings are an important part of coal shearers. When used under heavy load conditions, ordinary tapered bearings are usually used. This kind of bearings bears a small load and is not strong in impact resistance, so the service life is short.

Contents of the invention

The object of the present invention is to provide a reinforced double-row tapered roller bearing with long service life, large load and strong impact resistance in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions: a reinforced tapered roller bearing, which is characterized in that it includes two inner rings, an inner spacer ring, an outer ring, two cages, and rollers. Two inner rings are arranged side by side in the outer ring, the inner spacer ring is arranged between the two inner rings, the two cages are arranged between the outer ring and the two inner rings, and the inner wall of the outer ring is provided with double row rollers The outer walls of the two inner rings are each provided with a raceway, the rollers are arranged in the cage, and the two cages are respectively assembled with the corresponding inner rings in the double-row raceways of the outer ring.

The outer diameter of the outer ring is provided with an oil filling hole, and the end face of the inner ring is provided with an oil groove, so that the bearing can be fully lubricated during use.

There are multiple rollers, which are evenly installed in the pockets of the cage.

The diameter of described roller is 52.4mm, and the quantity of roller is 60.

The inner ring is made of carburized steel for infiltration quenching treatment.

The rated dynamic load of the bearing is Cr 3780kN, and the rated static load is Cor 7000kN.

Compared with the prior art, the utility model has the following advantages:

1. Reinforced tapered roller bearings are used to replace ordinary tapered bearings, which can withstand greater loads and have a service life of more than one year, which reduces the cost of the enterprise and improves work efficiency, making the shearer a new level and reaching the advanced level at home and abroad. level;

2. With reinforced tapered roller bearings, the static and dynamic loads can reach Cr 3780kN and Cor 7000kN respectively, and the carrying capacity is 20% higher than that of ordinary bearings, which is very suitable for the heavy load requirements of the coal mining industry;

3. Carburizing steel is used for carburizing and quenching to form the characteristics of inner softness and outer rigidity, so that the bearing can withstand large impact loads, does not break, has high strength and rigidity, and is durable.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model is described in detail below in conjunction with specific embodiments.

Example

As shown in Figure 1, a reinforced tapered roller bearing includes an outer ring 1, two inner rings 2, an inner spacer ring 3, several rollers 4, and two cages 5. The two inner rings 2 are arranged side by side in the outer ring 1, the inner spacer 3 is arranged between the two inner rings 2, the two cages 5 are arranged between the outer ring 1 and the two inner rings 2, the outer The outer diameter of the ring 1 is provided with a groove, the inner wall of the outer ring 1 is provided with a double-row raceway, and each of the two inner rings 2 is provided with a raceway, and the above-mentioned several rollers 4 are evenly installed on the cage 5 The pocket, and the assembly composed of the inner ring 2 are assembled into the double-row raceways of the outer ring.

The outer diameter of the outer ring 1 is provided with an oil filling hole, and the end face of the inner ring is provided with an oil groove, so that the bearing can be fully lubricated during use; The number is increased to 60 grains, which improves the bearing capacity of the bearing. The rated dynamic and static loads can reach Cr 3780kN and Cor 7000kN respectively, which is 20% higher than ordinary bearings; the inner and outer rings and rollers are made of carburized steel Carburized and quenched to form the characteristics of inner softness and outer rigidity, so that the bearing can withstand a large impact load, without fragmentation, high strength and rigidity, and durable. The utility model adopts reinforced double-row conical bearings to replace ordinary conical bearings, which is very suitable for the heavy load requirements of the coal mining machine industry. It is applied to the swinging planetary head of the coal mining machine, which makes the coal mining machine reach a new level and reach the advanced level at home and abroad.

Claims (4)

1. A reinforced tapered roller bearing, characterized in that it comprises two inner rings, an inner spacer, an outer ring, two cages, and rollers, and the two inner rings are arranged side by side in the outer ring, so that The inner spacer ring is arranged between the two inner rings, the two cages are arranged between the outer ring and the two inner rings, the inner wall of the outer ring is provided with double-row raceways, and the outer walls of the two inner rings are each provided with a The raceway, the rollers are arranged in the cage, and the two cages are respectively assembled with the corresponding inner ring in the double-row raceway of the outer ring. 2. A reinforced tapered roller bearing according to claim 1, characterized in that, the outer diameter of the outer ring is provided with an oil filling hole, and the end surface of the inner ring is provided with an oil groove. 3. A reinforced tapered roller bearing according to claim 1, characterized in that there are a plurality of said rollers, which are evenly installed in the pockets of the cage. 4. A reinforced tapered roller bearing according to claim 3, characterized in that, the diameter of the rollers is 52.4 mm, and the number of rollers is 60.

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