CN204553571U - A kind of roller turntable bearing with dust-proof cover - Google Patents

Abstract

The utility model relates to a roller slewing bearing with a dust cover, which comprises an inner ring, an outer ring, a roller and a cage, the roller is arranged between the outer ring and the inner ring through the cage, and the inner ring and the outer ring Both ends of the roller slewing bearing are provided with sealing rings that can close the inner cavity of the bearing. The sealing rings at both ends of the roller slewing bearing are provided with dust covers. The dust covers are fixed on the outer ring and the inner ring. The outer cover is set on the outside of the sealing ring, one end of the outer cover is fixed on the outer ring, and the other dust-proof end of the outer cover has a gap with the outer surface of the inner ring. The dust ring is set In the outer cover body, the dust retaining ring is fixed on the inner ring, and there is a gap between the outer end surface of the dust retaining ring and the outer cover body. The roller slewing bearing of the utility model has a dustproof cover, which is arranged outside the sealing ring, and the dustproof cover can effectively prevent debris such as large particles of dust from damaging the sealing mechanism of the bearing, thereby improving the service life of the bearing.

Description

A roller slewing bearing with a dust cover

technical field

The utility model relates to the technical field of extra-large bearings, in particular to a roller slewing bearing with a dust cover. the

Background technique

At present, in the field of heavy-duty machinery technology, the bearing is the core of the equipment, because it not only has the function of supporting extremely heavy load rotation, but also bears a huge overturning moment to adapt to the transfer of long-distance heavy-duty goods. Its strong bearing capacity is widely used in large-scale lifting equipment. Because the working environment of large-scale lifting equipment is usually relatively harsh, the existing bearings only have a single sealing structure (as shown in Figure 1), which cannot effectively deal with External debris such as large particles of dust and iron scale invade and accumulate near the sealing structure, thereby reducing the service life of the bearing, increasing the user's use cost, and reducing lubricant consumption.

Utility model content

The purpose of this utility model is to solve the shortcomings of the above technical problems and provide a roller slewing bearing with a dust cover, which can effectively prevent large particles of dust and other sundries from damaging the sealing mechanism of the bearing, thereby improving the service life of the bearing.

In order to solve the deficiencies of the above technical problems, the utility model adopts a technical solution as follows: a roller slewing bearing with a dust cover, including an inner ring, an outer ring, rollers and a cage, and the rollers are arranged through the cage Between the outer ring and the inner ring, and both ends of the inner ring and the outer ring are respectively provided with sealing rings that can seal the inner cavity of the bearing, and the sealing rings at both ends of the roller slewing bearing are provided with dust covers to prevent dust The cover is composed of an outer cover body fixed on the outer ring and a dust-proof ring fixed on the inner ring. The outer cover body is set outside the sealing ring. One end of the outer cover body is fixed on the outer ring. There is a gap with the outer surface of the inner ring, the dust retaining ring is arranged in the outer cover, the dust retaining ring is fixed on the inner ring and there is a gap between the outer end surface of the dust retaining ring and the outer cover.

For the convenience of installation, the dust-proof ring is connected with an installation ring for fixing it on the inner ring, one end of the installation ring is fixedly sleeved on the inner ring by fastening bolts, and the other end of the installation ring is connected from the outer cover body to the inner ring. The gap between the rings extends into and is fixedly connected with the dust ring.

There are many shapes of the dust-shielding ring. As one of them, the ring body of the dust-shielding ring is arranged perpendicular to the axial direction of the outer ring, and the dust-shielding end of the outer cover body is parallel to the ring body of the dust-shielding ring.

As another shape, the ring body of the dust-shielding ring is a conical ring body, and the dust-shielding end of the outer cover body and the ring body of the dust-shielding ring are parallel to each other.

Beneficial effect

The roller slewing bearing of the utility model has a dustproof cover, which is arranged outside the sealing ring, and the dustproof cover can effectively prevent debris such as large particles of dust from damaging the sealing mechanism of the bearing, thereby improving the service life of the bearing.

Description of drawings

Fig. 1 is a schematic diagram of a sealing structure of a slewing bearing in the prior art;

Fig. 2 is a structural schematic diagram I of the dust cover of the roller slewing bearing of the present invention;

Fig. 3 is the structure schematic diagram II of the dust cover of the roller slewing bearing of the present invention;

Marks in the figure: 1. Inner ring, 2. Outer ring, 3. Seal ring, 4. Outer cover body, 5. Dust-proof ring, 6. Mounting ring.

Detailed ways

As shown in the figure: a roller slewing bearing with a dust cover, including an inner ring 1, an outer ring 2, rollers and a cage, the rollers are arranged between the outer ring 2 and the inner ring 1 through the cage, and The two ends of the inner ring 1 and the outer ring 2 are respectively provided with sealing rings 3 that can close the inner cavity of the bearing, and the sealing rings 3 at both ends of the roller slewing bearing are provided with dust covers, and the dust covers are fixed on the outer ring The outer cover body 4 on the inner ring 1 is composed of the outer cover body 4 and the dust ring 5 fixed on the inner ring 1, the outer cover body 4 is set outside the sealing ring 3, one end of the outer cover body 4 is fixed on the outer ring 2, the other end of the outer cover body 4 There is a gap between a dust-shielding end and the outer surface of the inner ring 1, the dust-shielding ring 5 is arranged in the outer cover body 4, the dust-shielding ring 5 is fixed on the inner ring 1 and between the outer end surface of the dust-shielding ring 5 and the outer cover body 4 with gaps. For the convenience of installation and disassembly, the dust-proof ring 5 is connected with an installation ring 6 for fixing it on the inner ring 1, and one end of the installation ring 6 is fixedly sleeved on the inner ring 1 by fastening bolts, and the installation ring 6 The other end protrudes from the gap between the outer cover body 4 and the inner ring 1 and is fixedly connected with the dust ring 5 . The shape of the dust retaining ring can be many kinds, as one of them, as shown in Figure 2: the ring body of the dust retaining ring is arranged perpendicular to the axial direction of the outer ring, the dust retaining end of the outer cover body and the ring of the dust retaining ring bodies parallel to each other. As shown in FIG. 3 : as another shape, the ring body of the dust-shielding ring is a conical ring body, and the dust-shielding end of the outer cover body and the ring body of the dust-shielding ring are parallel to each other.

The roller slewing bearing of the utility model has a dust cover, and the dust cover is arranged outside the sealing ring, and a curved channel is formed between the outer cover body of the dust cover and the dust retaining ring, so that the dust cover will not affect the normal operation of the bearing. Rotation can effectively prevent large particles of dust and other sundries from easily entering and damaging the sealing mechanism of the bearing, which can improve the service life of the bearing.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. the roller turntable bearing with dust-proof cover, comprise inner ring (1), outer ring (2), roller and retainer, roller is arranged between outer ring (2) and inner ring (1) by retainer, and the two ends of inner ring (1) and outer ring (2) are respectively equipped with the seal ring (3) can closing bearing cavity, it is characterized in that: two ends seal ring (3) place of described roller turntable bearing is provided with dust-proof cover, dust-proof cover is made up of the outer outlet body (4) be fixed on outer ring (2) and the dust retaining ring (5) be fixed on inner ring (1), described outer outlet body (4) is located at the outside of seal ring (3), one end of outer outlet body (4) is fixed on outer ring (2), another dust-break end and inner ring (1) outer surface of outer outlet body (4) have gap, described dust retaining ring (5) is arranged in outer outlet body (4), dust retaining ring (5) is fixed on inner ring (1) and goes up and have gap between the exterior edge face of dust retaining ring (5) and outer outlet body (4).

2. a kind of roller turntable bearing with dust-proof cover as claimed in claim 1, it is characterized in that: described dust retaining ring (5) is connected with the installing ring (6) for being fixed on inner ring (1), one end of installing ring (6) is located on inner ring (1) by clamping bolt fixed cover, and the other end of installing ring (6) stretches into from the gap between outer outlet body (4) with inner ring (1) and is fixedly connected with dust retaining ring (5).

3. a kind of roller turntable bearing with dust-proof cover as claimed in claim 1, is characterized in that: the ring body of described dust retaining ring (5) is arranged perpendicular to the axis of outer ring (2), and the dust-break end of outer outlet body (4) and the ring body of dust retaining ring (5) are parallel to each other.

4. a kind of roller turntable bearing with dust-proof cover as claimed in claim 1, it is characterized in that: the ring body of described dust retaining ring (5) is taper ring body, the dust-break end of outer outlet body (4) and the ring body of dust retaining ring (5) are parallel to each other.