CN209294243U - A kind of double-row self-aligning roller bearing - Google Patents

Abstract

The utility model relates to technical field of bearings, especially a kind of double-row self-aligning roller bearing, including outer ring and inner ring, the inside of outer ring is arranged in the inner ring, the inner sidewall of the outer ring is the first spherical raceway, symmetrical second spherical raceway is provided tiltedly on the inner ring lateral wall and positioned at two sides, rolling element is equipped between two the second spherical raceways and the first spherical raceway, middle baffle is equipped between two rolling elements, two column retainers are symmetrically connected on the middle baffle, the rolling element is fixed on corresponding retainer, the position that the retainer corresponds to each roller on rolling element is equipped with limited block, the roller is equipped with the limiting slot to match with limited block, the limited block is connected in limiting slot.The utility model structure is simple, and long service life is worthy to be popularized.

Description

A kind of double-row self-aligning roller bearing

Technical field

The utility model relates to technical field of bearings more particularly to a kind of double-row self-aligning roller bearings.

Background technique

Concrete mixer is also known as concrete mixing and transporting car, is the specialized truck for transporting build concrete, class All mixing drums of device cylinder type are on truck to deliver mixed concrete.It can remain that mixing drum turns during transportation It is dynamic, it will not be solidified with the concrete for guaranteeing delivered, and bearing is one of the main component on cement mixing lathe main shaft.Traditional It is combined mating installation using 22224CCW33 self-aligning roller bearing on cement mixing lathe main shaft, due to cement mixing lathe main shaft Load it is larger, cause former bearing load carrying capacity smaller, bearing service life is very short, and therefore, we have proposed a kind of biserials Self-aligning roller bearing.

Utility model content

Purpose of the utility model is to solve existing in the prior art service life short disadvantage, and a kind of biserial proposed Self-aligning roller bearing.

To achieve the goals above, the utility model adopts the technical scheme that

A kind of double-row self-aligning roller bearing, including outer ring and inner ring are designed, the inside of outer ring is arranged in the inner ring, described The inner sidewall of outer ring is the first spherical raceway, on the inner ring lateral wall and is located at two sides and is provided tiltedly with symmetrical second spherical surface rolling Road is equipped with rolling element, is equipped with middle baffle, institute between two rolling elements between two the second spherical raceways and the first spherical raceway It states and is symmetrically connected with two column retainers on baffle, the rolling element is fixed on corresponding retainer, and the retainer is corresponding The position of each roller on rolling element is equipped with limited block, and the roller is equipped with the limiting slot to match with limited block, institute Limited block is stated to be connected in limiting slot.

Preferably, first spherical raceway is identical as the second spherical raceway radius, and is correspondingly arranged, in the rolling element The rolling surface of roller be spherical structure, and it is identical as the spherical radius of the first spherical raceway and the second spherical raceway.

Preferably, the aligning angle of the rolling element is 4-5 degree, and rolls intracorporal roller and carry out chamfered.

Preferably, the outer ring is equipped with oil filler point.

Preferably, the limited block is hemisphere jut.

The utility model proposes a kind of double-row self-aligning roller bearing, beneficial effect is:

1, the double-row self-aligning roller bearing significantly improves bearing maneuvering load, its service life is improved compared with holding with primitive axis；

2, the double-row self-aligning roller bearing significantly improves the aligning performance of bearing, promotes product service performance；

3, the double-row self-aligning roller bearing improves the lubrication of contact position in inner part operation process, reduces bearing friction, drop Low running noise.

Detailed description of the invention

Fig. 1 be the utility model proposes a kind of double-row self-aligning roller bearing broken section structural schematic diagram；

Fig. 2 is enlarged structure schematic diagram at the A of Fig. 1.

In figure: outer ring 1, oil filler point 11, inner ring 2, rolling element 3, limiting slot 31, retainer 4, limited block 41, middle baffle 5.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.

Referring to Fig.1-2, a kind of double-row self-aligning roller bearing, including outer ring 1 and inner ring 2, inner ring 2 are arranged in outer ring 1 Portion, outer ring 1 are equipped with oil filler point 11, and the inner sidewall of outer ring 1 is the first spherical raceway, on 2 lateral wall of inner ring and are located at two and roll It is tiltedly equipped with symmetrical second spherical raceway, is equipped with rolling element 3 between two the second spherical raceways and the first spherical raceway, first Spherical raceway is identical as the second spherical raceway radius, and is correspondingly arranged, and the rolling surface of the roller in rolling element 3 is spherical structure, And it is identical as the spherical radius of the first spherical raceway and the second spherical raceway, the aligning angle of rolling element 3 is 4-5 degree, and is rolled Roller in body 3 carries out chamfered, and the roller in rolling element 3, which uses, is increased in size design, experience Zhengyuan concrete mixer It is 490KN that self-aligning roller bearing dynamic load rating is used on main shaft；Rated static load is 688KN, this double-row self-aligning roller bearing Dynamic load rating be 631.4KN；Rated static load is 782.2KN, keeps the bearing capacity of bearing bigger, widens 1 width of outer ring Size design keeps the aligning performance of bearing itself more preferable, 1.5 degree of common aligning angle, the tune of this double-row self-aligning roller bearing Heart angle 4-5 degree.

It is equipped with middle baffle 5 between two rolling elements 3, two column retainers 4 are symmetrically connected on middle baffle 5, rolling element 3 is fixed On corresponding retainer 4, the position of each roller on the corresponding rolling element 3 of retainer 4 is equipped with limited block 41, sets on roller There is the limiting slot 31 to match with limited block 41, limited block 41 is connected in limiting slot 31, and limited block 41 is hemisphere jut, limit The design of block 41 and limiting slot 31 improves the lubrication of roller end face and 4 contact position of retainer, reduces Bearing inner friction, guidance Roller preferably moves, and improves the lubrication of contact position in double-row self-aligning roller bearing inner part operation process, reduces bearing friction, Reduce running noise.

The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (5)

1. a kind of double-row self-aligning roller bearing, including outer ring (1) and inner ring (2), the inner ring (2) is arranged in the interior of outer ring (1) Portion, the inner sidewall of the outer ring (1) are the first spherical raceway, on inner ring (2) lateral wall and are located at two sides and are provided tiltedly with pair The second spherical raceway claimed, is equipped with rolling element (3), feature exists between two the second spherical raceways and the first spherical raceway In, middle baffle (5) are equipped between two rolling elements (3), are symmetrically connected with two column retainers (4) on the middle baffle (5), it is described Rolling element (3) is fixed on corresponding retainer (4), the position of each roller on the retainer (4) corresponding rolling element (3) It is equipped with limited block (41), the roller is equipped with the limiting slot (31) to match with limited block (41), the limited block (41) It is connected in limiting slot (31).

2. a kind of double-row self-aligning roller bearing according to claim 1, which is characterized in that first spherical raceway and Two spherical raceway radiuses are identical, and are correspondingly arranged, and the rolling surface of the roller in the rolling element (3) is spherical structure, and with the The spherical radius of one spherical raceway and the second spherical raceway is identical.

3. a kind of double-row self-aligning roller bearing according to claim 1, which is characterized in that the aligning of the rolling element (3) Angle is 4-5 degree, and the roller in rolling element (3) carries out chamfered.

4. a kind of double-row self-aligning roller bearing according to claim 1, which is characterized in that the outer ring (1) is equipped with note Oilhole (11).

5. a kind of double-row self-aligning roller bearing according to claim 1, which is characterized in that the limited block (41) is spherical shape Protrusion.