CN101968081B - Cantilever shaft supporting device - Google Patents

Abstract

The cantilever shaft supporting device of the present invention includes a shaft, a bearing seat, a bearing cap, at least four rolling bearings, two sleeves, two sealing rings and two pressing rings. The rolling bearing is located in the bearing seat, the inner ring is fastened to the shaft, and the outer ring is fastened to the bearing seat. There are two radial through holes on the same plane and perpendicular to each other on the bearing seat. The two radial through holes are located in the rolling bearing. The end part is connected with the inner cavity of the rolling bearing, there is a gap between the first sleeve and the end face of the rolling bearing, and there is a gap between the bearing cap and the end face of the rolling bearing. The cantilever shaft support device, lubricating oil enters the rolling bearing through two through holes on the bearing seat, not only has the advantages of the traditional support device, but also has strong bearing capacity, small friction loss, convenient and quick lubrication, and continuous lubrication can be realized.

Description

Cantilever shaft support

technical field

The invention relates to a load-carrying cantilever shaft supporting device.

Background technique

Cantilever shaft support devices are widely used in many fields such as mechanical equipment, metallurgy, hydropower and water conservancy, mining machinery, railways, construction machinery, steel, packaging, petrochemical, instrumentation, and precision instruments. The currently used cantilever shaft supporting device mainly includes a bearing seat for support, a cantilever shaft and a bearing. When lubricating the bearing, it is always necessary to remove the bearing for lubrication, which is very inconvenient. Moreover, most of the bearing capacity is very limited, and for some places where there are instantaneous impact loads, the service life of the bearings is often greatly reduced.

Contents of the invention

In order to overcome the inconvenience of bearing lubrication and the shortcoming of insufficient instantaneous load carrying capacity, the purpose of the present invention is to provide a cantilever shaft support device which is not only extremely convenient to lubricate, but also greatly strengthens the instantaneous load carrying capacity.

The cantilever shaft supporting device of the present invention includes a shaft, a bearing seat, a bearing cover, at least four rolling bearings, two sleeves, two sealing rings and two pressing rings. The rolling bearing is located in the bearing seat. The inner ring of the rolling bearing is fastened to the shaft, and the outer ring is fastened to the bearing seat. There are two radial through holes on the same plane and perpendicular to each other on the bearing seat. The two radial through holes are located in the rolling bearing The end of the bearing is connected with the inner cavity of the rolling bearing. A first sleeve is installed on one side of the bearing seat. The inner ring of the first sleeve is fastened to the shaft, and the outer ring rotates relative to the bearing seat. The first sleeve and There is a first sealing ring between the bearing seats, the first sealing ring is pressed axially by the first pressure ring, and there is a gap between the first sleeve and the end face of the rolling bearing; the second sleeve is installed on the other side of the bearing seat, The inner ring of the second sleeve is fastened to the shaft, and the outer ring and the bearing cover rotate relatively. A second sealing ring is arranged between the second sleeve and the bearing cover, and the second sealing ring is axially compressed by the second pressure ring. There is a gap between the bearing cover and the end face of the rolling bearing.

In the cantilever shaft support device of the present invention, lubricating oil enters the rolling bearing through two through holes on the bearing seat, so that lubrication can be performed even in the working state, and the gap between the two ends of the rolling bearing can ensure complete lubrication of the outer edge of the ball bearing. The use of at least four rolling bearings can not only greatly enhance the bearing capacity, but also enable the bearing housing to achieve a certain degree of buffering when subjected to instantaneous impact loads, greatly enhancing the bearing capacity of the rolling bearings.

The invention has simple structure, convenient and fast lubrication, and can realize continuous lubrication; the axial bearing capacity is greatly enhanced, and the fatigue life of the bearing is also greatly increased; when supported on one side, it can bear large radial force and has good stability.

Description of drawings

Fig. 1 is a schematic diagram of a cantilever shaft supporting device of the present invention.

Figure 2 is a schematic diagram of the bearing seat, in which Figure a is an axial sectional view, and Figure b is a view along the direction A of Figure a.

In the figure: 1. shaft, 2. bearing housing, 3. bearing cover, 4. rolling bearing, 5. first sleeve, 6. second sleeve, 7. first sealing ring, 8. second sealing ring, 9 . The first pressure ring, 10. The second pressure ring, 11, 12. are respectively radial through holes, and 13, 14. are respectively gaps.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

1 and 2, the cantilever shaft support device of the present invention includes a shaft 1, a bearing housing 2, a bearing cover 3, at least four rolling bearings 4, two sleeves 5, 6, two sealing rings 7, 8 and two A pressure ring 9,10. The rolling bearing 4 is located in the bearing seat 2. The inner ring of the rolling bearing 4 is fastened to the shaft 1, and the outer ring is fastened to the bearing seat 2. The bearing seat 2 is provided with two radial through holes 11, 12 on the same plane and perpendicular to each other. , two radial through holes 11, 12 are located at the end of the rolling bearing 4, and communicate with the inner cavity of the rolling bearing 4, a first sleeve 5 is installed on one side of the bearing seat 2, and the inner ring of the first sleeve 5 is connected with the inner ring of the rolling bearing 4. The shaft is fastened, the outer ring and the bearing seat 2 rotate relatively, and the first sealing ring 7 is arranged between the first sleeve 5 and the bearing seat 2, and the first sealing ring 7 is axially compressed by the first pressure ring 9. There is a gap 13 between a sleeve 5 and the end face of the rolling bearing 4; a second sleeve 6 is installed on the other side of the bearing seat 2, the inner ring of the second sleeve 6 is fastened to the shaft, and the outer ring and the bearing cover 3 rotate relatively. A second sealing ring 8 is arranged between the second sleeve 6 and the bearing cap 3 , and the second sealing ring 8 is axially compressed by the second pressure ring 10 , and there is a gap 14 between the bearing cap 3 and the end surface of the rolling bearing 4 .

Claims (1)

1. cantilevered axle support device; It is characterized in that comprising axle (1), bearing support (2), bearing cap (3), at least four rolling bearings (4), two sleeves (5,6), two seal rings (7,8) and two pressure rings (9,10), rolling bearing (4) is positioned at bearing support (2), and the inner ring of rolling bearing (4) is fastening with axle (1); Outer ring and bearing support (2) are fastening; Have two on the bearing support (2) and be in same plane, orthogonal radial direction through hole (11,12), two radial direction through hole (11,12) are positioned at the end of rolling bearing (4), and are communicated with the inner chamber of rolling bearing (4); Side at bearing support (2) is equipped with first sleeve (5); The inner ring of first sleeve (5) is fastening with axle, and outer ring and bearing support (2) relatively rotate, and are provided with first seal ring (7) between first sleeve (5) and the bearing support (2); First seal ring (7) is through first pressure ring (9) axial compression, at the end face gapped (13) of first sleeve (5) with rolling bearing (4); The opposite side of bearing support (2) is equipped with second sleeve (6); The inner ring of second sleeve (6) is fastening with axle; Outer ring and bearing cap (3) relatively rotate; Be provided with second seal ring (8) between second sleeve (6) and the bearing cap (3), second seal ring (8) is through second pressure ring (10) axial compression, at the end face gapped (14) of bearing cap (3) with rolling bearing (4).

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