CN210461386U - Sealed double-row tapered roller bearing - Google Patents

Abstract

The utility model discloses a sealed double-row tapered roller bearing, which comprises an outer ring, an inner ring, a roller and a sealing ring, wherein an outer sealing groove is arranged on the outer ring, the side wall of the outer sealing groove, which is far away from the roller, is inclined from the groove bottom to the notch to one side, which is far away from the roller, to form an outer guide wall, the outer edge of the sealing ring is provided with a skirt edge, the outer edge of the skirt edge is jointed with the inner edge of the outer ring, a lug is arranged on the outer edge of the skirt edge, a groove is arranged between the skirt edge and the sealing ring, one side of the skirt edge, which is far away from the roller, is bent and extended to form a limiting part, the lug is clamped with the outer sealing groove to prevent the sealing ring from being separated from the bearing in the bearing operation process, after long-time operation, the sealing ring has poor sealing performance, the sealing ring needs to be replaced, the, the sealing ring can be conveniently taken out, and the skirt edge can be more conveniently installed or taken out by the obliquely arranged outer guide wall.

Description

Sealed double-row tapered roller bearing

Technical Field

The utility model belongs to the technical field of the bearing, concretely relates to canned type double-row tapered roller bearing.

Background

The sealing device of the bearing can prevent the invasion of impurities such as dust, moisture, metal powder and the like from the outside and prevent the leakage of grease in the bearing. With the development of the technology, the sealing requirements of the bearing are higher and higher aiming at different working occasions, and the double-row tapered roller is a bearing commonly used in modern production and generally comprises an inner ring, an outer ring, a roller and a sealing ring.

The existing bearing is usually sealed by using a rubber sealing ring, after the bearing is operated for a long time, the sealing performance of the sealing ring is poor, the sealing ring needs to be replaced, but the existing sealing ring needs to be difficult to take down after being installed, and the bearing can be damaged when the existing sealing ring is taken down.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a sealed double-row tapered roller bearing which is more convenient to install or take down a sealing ring.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a canned type double row tapered roller bearing, includes outer lane, inner circle, roller and sealing washer, be equipped with the outer seal groove that supplies the sealing washer installation on the outer lane, the lateral wall that the roller was kept away from to the outer guide wall of the lopsidedness formation of keeping away from the roller by tank bottom to notch in the outer seal groove, the outer department of following of sealing washer is equipped with the shirt rim, the outer edge of shirt rim with the outer lane in along laminating setting and the shirt rim along be equipped with the lug of outer seal groove joint, be equipped with the recess that axial cross-section is the U-shaped between shirt rim and the sealing washer, the opening orientation of recess sets up towards the direction of keeping away from the roller, the shirt rim is kept away from the roller lateral buckling extension and.

Among the above-mentioned technical scheme, the lug prevents with the joint of outer seal groove that the sealing washer breaks away from the bearing at the bearing operation in-process, after long-time operation, the sealing washer leakproofness worsens, need change the sealing washer, remove the spacing cooperation of spacing portion with the outer lane earlier during the change, operate spacing portion again and press the shirt rim to the axis direction, make the recess of U-shaped produce deformation, in order to remove the joint state of shirt rim and outer lane, make things convenient for taking out of sealing washer, the installation of slope setting outer guide wall messenger shirt rim or take out more conveniently.

As a further setting of the utility model, circle in and be equipped with first flange and second flange, first flange is located one side that the second flange is close to the roller, there is the clearance to form the inside seal groove that supplies the sealing washer installation between first flange and the second flange.

Among the above-mentioned technical scheme, compare in directly including going up the fluting, the inner seal groove that is formed by first flange and second flange reduces the radial width of sealing washer under the unchangeable condition of inner and outer lane distance, makes the sealing washer operation more stable.

As a further setting of the utility model, the lateral wall that the inside seal groove is close to the roller is first butt joint wall, and the lateral wall of keeping away from the roller is second butt joint wall, second butt joint wall is by notch to tank bottom to the lopsidedness of keeping away from the roller, the interior department of following of sealing washer is equipped with the sealing part that is located the inside seal groove and axial cross-section is the zigzag, the sealing part is including the first seal section, second seal section and the third seal section that connect gradually, first seal section is connected with the sealing washer with the second seal section common end.

Among the above-mentioned technical scheme, the second butt wall that the slope set up makes the installation of sealing or takes out more convenient, whether the sealing can select to contact with the inner seal groove according to the in-service use condition, when the bearing rotational speed is higher, the sealing does not contact with the inner seal groove, make sealing and inner seal groove form labyrinth seal, guarantee certain leakproofness when reducing frictional force, when the bearing rotational speed is lower, the one end and the first butt wall butt of sealing washer are kept away from to first seal segment, the one end butt of keeping away from the second seal segment of third seal segment is on the second butt wall, make the inside complete sealing of whole bearing, the sealing of zigzag has certain deformability, guarantee the leakproofness of sealing.

As a further setting of the utility model, the size of contained angle between first seal section and the second seal section is less than the contained angle between second seal section and the third seal section.

Among the above-mentioned technical scheme, make the deflection between third seal segment and the second seal segment bigger, when third seal segment and first butt wall and second butt wall butt, the circumstances that the butt insecure sealed inefficacy that leads to can not appear

As the utility model discloses a further setting, the contained angle of outer guide wall and external seal groove tank bottom is 135 ~150, the contained angle of second butt wall and internal seal groove tank bottom is 120 ~ 135.

Among the above-mentioned technical scheme, outer guide wall can make things convenient for the shirt rim installation or take out at above-mentioned angle within range, can prevent again that the shirt rim from breaking away from at the bearing operation in-process, and the second butt wall has both made things convenient for sealed end installation or takes out and can prevent again that the sealing from breaking away from at the operation in-process at above-mentioned angle within range.

The present invention will be further described with reference to the accompanying drawings.

Drawings

FIG. 1 is a sectional view of an embodiment of the present invention;

fig. 2 is an enlarged view of portion i of fig. 1.

Detailed Description

When terms such as "upper" and "lower", "right" and "left" or similar relative expressions are used in the present embodiment, these refer only to the accompanying drawings and are not necessarily actual usage.

The utility model discloses a concrete embodiment is shown in fig. 1-2, a canned type double row tapered roller bearing, including outer lane 01, inner circle 02, roller 03 and sealing washer 04, be equipped with the outer seal groove 011 that supplies sealing washer 04 installation on the outer lane 01, the lateral wall that roller 03 was kept away from to the outer seal groove 011 is formed outer guide wall 0111 by tank bottom to notch to the one side slope of keeping away from roller 03, the outer department of following of sealing washer 04 is equipped with shirt rim 041, the outer edge of shirt rim 041 sets up and the outer edge of shirt rim 041 is equipped with the lug 0411 with outer seal groove 011 joint with the interior laminating of the interior edge of outer lane 01, be equipped with axial cross section for the recess 0412 of U-shaped between shirt rim 041 and the sealing washer 04, the opening of recess 0412 sets up towards the direction of keeping away from roller 03, one side bending type that roller 03 was kept away from to the shirt rim 041 extends the. The convex block 0411 is clamped with the outer sealing groove 011 to prevent the sealing ring 04 from being separated from the bearing in the bearing operation process, after long-time operation, the sealing property of the sealing ring 04 is deteriorated, the sealing ring 04 needs to be replaced, the limiting matching between the limiting part 0413 and the outer ring 01 is firstly removed during replacement, then the limiting part 0413 is operated to press the skirt edge 041 in the axial direction, so that the U-shaped groove 0412 is deformed to remove the clamping state between the skirt edge 041 and the outer ring 01, the sealing ring 04 is convenient to take out, the skirt edge 041 is more convenient to mount or take out due to the obliquely arranged outer guide wall 0111, the inner ring 02 is provided with a first blocking edge 021 and a second blocking edge 022, the first blocking edge 021 is positioned on one side of the second blocking edge 022 close to the 03, and a gap exists between the first blocking edge 021 and the second blocking edge 022 to form an inner sealing groove. Compare in direct grooving on inner circle 02, the inner seal groove 023 that is formed by first flange 021 and second flange 022 is under the unchangeable condition of inner and outer lane 01 distance, reduce the radial width of sealing washer 04, make the operation of sealing washer 04 more stable, the lateral wall that inner seal groove 023 is close to roller 03 is first butt wall 0231, the lateral wall of keeping away from roller 03 is second butt wall 0232, second butt wall 0232 is by notch to tank bottom to the one side slope of keeping away from roller 03, the interior edge department of sealing washer 04 is equipped with and is located inner seal groove 023 and axial cross-section is the sealing part 042 of zigzag, sealing part 042 includes first sealing section 0421, second sealing section 0422 and the third sealing section 0423 that connects gradually, first sealing section 0421 is connected with sealing washer 04 with the public end of second sealing section 0422. The installation or the extraction that the second butt wall 0232 that the slope set up made sealing part 042 are more convenient, sealing part 042 can be selected according to the in service use case whether to contact with interior seal groove 023, in this embodiment, the one end and the first butt wall 0231 butt that sealing washer 04 was kept away from to first seal segment 0421, the one end butt that keeps away from second seal segment 0422 of third seal segment 0423 is on second butt wall 0232, make the inside complete sealing of whole bearing, the sealing part 042 of zigzag has certain deformability, guarantee sealing part 042's leakproofness, the size of the contained angle between first seal segment 0421 and the second seal segment 0422 is less than the contained angle between second seal segment 0422 and the third seal segment 0423. Make the deflection between third seal segment 0423 and the second seal segment 0422 bigger, when third seal segment 0423 and first butt wall 0231 and second butt wall 0232 butt, can not appear the firm condition that leads to sealed inefficacy of butt, the contained angle of outer guide wall 0111 and outer seal groove 011 tank bottom is 135, and the contained angle of second butt wall 0232 and interior seal groove 023 tank bottom is 120. The outer guide wall 0111 can facilitate installation or taking out of the skirt edge 041 in the angle range and can prevent the skirt edge 041 from being separated in the running process of the bearing, and the second abutting wall 0232 can facilitate installation or taking out of the sealing part 042 and can prevent the sealing part 042 from being separated in the running process in the angle range.

The utility model discloses do not confine the above-mentioned embodiment to, the general technical personnel in this field can adopt other multiple embodiments to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope.

Claims (5)

1. The utility model provides a canned type double-row tapered roller bearing, includes outer lane, inner circle, roller and sealing washer, be equipped with the outer seal groove that supplies the sealing washer installation on the outer lane, its characterized in that: the lateral wall that the roller was kept away from to the outer seal groove forms outer guide wall by tank bottom to notch to the lopsidedness of keeping away from the roller, the outer border department of sealing washer is equipped with the shirt rim, the outer border of shirt rim sets up and the outer of shirt rim is equipped with the lug with outer seal groove joint along the laminating with the interior of outer lane, be equipped with the recess that axial cross-section is the U-shaped between shirt rim and the sealing washer, the opening orientation of recess sets up towards the direction of keeping away from the roller, the shirt rim is kept away from the roller lateral buckling and is extended the spacing portion of formation and the spacing complex of outer lane outside terminal surface.

2. The sealed type double row tapered roller bearing according to claim 1, wherein: the inner ring is provided with a first flange and a second flange, the first flange is positioned on one side of the second flange close to the roller, and a gap is formed between the first flange and the second flange to form an inner sealing groove for installing a sealing ring.

3. The sealed type double row tapered roller bearing according to claim 2, wherein: the utility model discloses a sealing ring, including inner seal groove, roller, sealing part, first seal section, second seal section and third seal section, the lateral wall that inner seal groove is close to the roller is first butt joint wall, and the lateral wall of keeping away from the roller is the second butt joint wall, second butt joint wall is by notch to tank bottom to the lopsidedness of keeping away from the roller, the interior department of following of sealing ring is equipped with the sealing portion that is located inner seal groove and axial cross-section is the zigzag, the sealing portion is including the first seal section, second seal section and the third seal section that connect gradually, the common end and the sealing washer of first seal section and.

4. The sealed type double row tapered roller bearing according to claim 3, wherein: the size of an included angle between the first sealing section and the second sealing section is smaller than an included angle between the second sealing section and the third sealing section.

5. The sealed type double row tapered roller bearing according to claim 3 or 4, wherein: the included angle between the outer guide wall and the bottom of the outer sealing groove ranges from 135 degrees to 150 degrees, and the included angle between the second abutting wall and the bottom of the inner sealing groove ranges from 120 degrees to 135 degrees.

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