阅读说明：本技术 全效密封节能静音托辊 (Full-effect sealed energy-saving mute carrier roller ) 是由 赵红平 丁加新 高勇 薛冬 孙宇 于 2020-07-07 设计创作，主要内容包括：全效密封节能静音托辊,有托辊和两侧的轴承座,轴承座内均设置有全效密封节能静音轴承,全效密封节能静音轴承的一侧端面设有迷宫密封结构,迷宫密封结构的入口设有V形入口逆向密封结构,开口朝向迷宫密封的入口。迷宫密封结构的出口设有V形出口逆向密封结构,一支延伸逆向堵住迷宫密封结构的入口,另一支逆向堵向迷宫密封结构和保持架的连接口。另一侧单层接触式密封圈内圈密封唇设置在轴承内圈凹槽内。保持架为工程塑料质。迷宫密封结构为对扣的外、内密封环形成的通道,轴承座有外扩的台肩,设置密封盖,密封盖与台肩有甩水间隙。本托辊噪音小,不进杂质,不漏油,节省成本,承载能力大运行更顺畅。(The full-effect sealed energy-saving mute carrier roller is provided with a carrier roller and bearing seats on two sides, wherein a full-effect sealed energy-saving mute bearing is arranged in each bearing seat, a labyrinth seal structure is arranged on one side end face of each full-effect sealed energy-saving mute bearing, a V-shaped inlet reverse seal structure is arranged at an inlet of each labyrinth seal structure, and an opening faces to an inlet of each labyrinth seal. The outlet of the labyrinth seal structure is provided with a V-shaped outlet reverse seal structure, one outlet extends to reversely block the inlet of the labyrinth seal structure, and the other outlet extends to reversely block a connecting port of the labyrinth seal structure and the retainer. And the inner ring sealing lip of the single-layer contact sealing ring at the other side is arranged in the groove of the bearing inner ring. The retainer is made of engineering plastic. The labyrinth seal structure is a channel formed by the buckled outer and inner seal rings, the bearing seat is provided with an outward-expanded circular bead, a seal cover is arranged, and a water throwing gap is formed between the seal cover and the circular bead. The roller has the advantages of low noise, no impurity, no oil leakage, cost saving, high bearing capacity and smooth operation.)

1. The full-effect sealed energy-saving mute carrier roller is provided with a carrier roller (2) and bearing blocks (1) fixed on two sides of the carrier roller (2); a full-effect sealed energy-saving mute bearing (3) is arranged in each bearing seat (1);

the full-effect sealed energy-saving mute bearing (3) comprises a bearing inner ring (3-1), a bearing outer ring (3-2), a retainer (3-3) and a plurality of balls (3-4); a retainer (3-3) is arranged between the bearing inner ring (3-1) and the bearing outer ring (3-2), and balls (3-4) are arranged in pockets of the retainer (3-3); a single-layer rubber contact type sealing structure (8) is arranged on the end face of one side of the full-effect sealing energy-saving mute bearing (3); the method is characterized in that:

the end surface of the other side of the full-effect sealing energy-saving mute bearing (3) is provided with a labyrinth sealing structure (4);

an inlet reverse sealing structure (12) is arranged at the inlet of the labyrinth sealing structure (4);

an outlet reverse sealing structure (6) is arranged at the outlet of the labyrinth sealing structure (4);

the bearing inner ring (3-1) is fixed on the supporting shaft (29).

2. The full-effect sealing energy-saving mute idler according to claim 1, wherein:

the inner ring sealing lip of the single-layer contact type sealing ring (8-2) is arranged in the bearing inner ring groove (17).

3. The full-effect sealing energy-saving mute idler according to claim 1, wherein:

the retainer (3-3) is made of engineering plastics.

4. The full-effect sealing energy-saving mute idler according to claim 1, wherein:

the labyrinth seal structure (4) comprises a labyrinth seal channel formed by an external seal ring (4-1) and an internal seal ring (4-3) which are buckled with each other;

the inlet reverse sealing structure (12) is V-shaped, and the opening faces to the inlet of the labyrinth seal (4);

the outlet reverse sealing structure (6) is V-shaped, one outlet extends to reversely block the inlet of the labyrinth sealing structure (4), and the other outlet reversely blocks a connecting port at the labyrinth sealing structure (4) and the retainer (3-3).

5. The full-effect sealing energy-saving mute idler according to claim 4, wherein:

the outer sealing ring (4-1) comprises an outer sealing ring annular part (4-1-1) with an integral structure, an outer sealing ring inner ring flanging (4-1-2) and an outer sealing ring outer ring flanging (4-1-3) which are bent at two sides;

the outer sealing ring (4-1) is fixedly connected with the bearing inner ring (3-1);

the inner sealing ring (4-3) comprises an inner sealing ring annular part (4-3-1) with an integral structure, and an inner sealing ring inner ring flanging (4-3-2) and an inner sealing ring outer ring flanging (4-3-3) which are bent at two sides;

the inner sealing ring (4-3) is fixedly clamped with the bearing outer ring (3-2);

the elastic middle sealing ring (4-2) comprises a middle sealing ring annular part (4-2-1) with an integral structure, middle sealing ring outer ring sealing lips (4-2-2) with two bent sides and middle sealing ring inner ring extension parts (4-2-3);

the middle sealing ring (4-2) is positioned between the outer sealing ring (4-1) and the inner sealing ring (4-3) and is fixedly connected with the inner sealing ring (4-3);

the outer ring sealing lip (4-2-2) of the middle sealing ring extends towards the inlet of the labyrinth sealing structure (4) to form an inlet reverse sealing structure (12);

the extension part (4-2-3) of the inner ring of the middle sealing ring extends to the outlet of the labyrinth sealing structure (4) to form an outlet reverse sealing structure (6).

6. The full-effect sealing energy-saving mute idler according to claim 5, wherein:

the V-shaped angle of the inlet reverse sealing structure (12) is 45-60 degrees;

an angle S formed between one branch and the other branch of the outlet reverse sealing structure (6) and the two radial sides of the bearing inner ring (3-1) is 55-60 degrees, and an angle T is 55-60 degrees.

7. The full-effect sealing energy-saving mute idler according to claim 6, wherein:

the angle R is 45 degrees, S is 55 degrees, and T is 55 degrees; or the angle R is 60 degrees, S is 60 degrees, and the angle T is 60 degrees; or the angle R is 50 °, S is 57 °, and T is 57 °.

8. The full-effect sealing energy-saving mute idler according to claim 5, wherein:

the end face of the annular part (4-1-1) of the outer sealing ring is provided with a zinc coating (7).

9. The full-effect sealing energy-saving mute idler according to claim 1, wherein:

the bearing seat (1) is provided with an outward-expanding shoulder (20), the sealing cover (9) is arranged at the shoulder (20), the sealing cover (9) is fixed on the supporting shaft (29), and a gap (21) is formed between the sealing cover (9) and the shoulder (20).

10. The full-effect sealing energy-saving mute idler according to claim 9, wherein: the inner side of the middle hole of the sealing cover (9) is integrally provided with a sealing cover bearing inner ring annular rib (19) which corresponds to the position of the bearing inner ring (3).

11. The full-effect sealing energy-saving mute idler according to claim 9, wherein:

the shoulder (20) has an outward expansion angle P of 3-5 degrees.

12. The full-effect sealing energy-saving mute idler according to claim 11, wherein:

the angle P is 3 °, or the angle P is 5 °, or the angle P is 4 °.

13. The full-effect sealing energy-saving mute idler according to claim 1, wherein: the sealing surface of the bearing outer ring (3-2) is carbonized.

Technical Field

The invention belongs to the technical field of carrier rollers in the field of machine manufacturing, and particularly relates to a full-effect sealing energy-saving mute carrier roller.

Background

Idler rollers are one of the important components in belt conveyors, particularly large belt conveyors used in coal mines. The carrier roller has the functions of supporting the weight of the conveying belt and materials, the carrier roller is flexible and reliable in operation, the friction force between the conveying belt and the carrier roller is reduced, the service life of the conveying belt accounting for more than 25% of the total cost of the conveyor is played as a key role, when the carrier roller operates, the outer ring of the bearing rotates, the inner ring is relatively static, the rotating speed of the belt conveyor is low, and the bearing capacity of the bearing and the carrier roller is high.

The prior carrier roller and original seal bearing 23 comprises as shown in fig. 1 and 2:

when the bearing is sealed, a plurality of sealing elements (a plurality of sealing elements such as the isolating ring 22, the original sealing bearing 23, the retainer ring 24, the outer sealing ring 25, the inner sealing ring 26, the end cover, the shaft cover and the like and combination forms thereof) are needed, the manufacturing cost is high, the assembly is complex, the weight is heavy, and much labor is consumed.

When a plurality of sealing elements are used, the original bearing seat 27 is in a long straight cylindrical shape, and the original sealing bearing 23 is positioned in the depth of the original bearing seat 27, so that the bearing supporting roller has poor bearing capacity.

The original sealing bearing 28 is of a rubber and framework sealing structure (single-layer rubber contact type sealing structure 8), the sealing lip is simple in structure and easy to lift up water, silt, air, impurities and the like, and the sealing lip is easy to lift up to leak oil.

The metal retainer of the bearing is easy to generate heat and generate noise, and the end face of the bearing is easy to rust.

Disclosure of Invention

The technical problems to be solved by the invention are as follows: the full-effect sealed energy-saving mute carrier roller provided with the mute energy-saving bearing is provided for overcoming the defects in the prior art, and has the advantages of mute energy conservation, light weight and better sealing effect.

The technical scheme is as follows:

a full-effect sealed energy-saving silent carrier roller is composed of a carrier roller and bearing blocks fixed to both sides of carrier roller. And a full-effect sealed energy-saving mute bearing is arranged in each bearing seat.

The full-effect sealed energy-saving mute bearing comprises a bearing inner ring, a bearing outer ring, a retainer and a plurality of balls. A retainer is arranged between the bearing inner ring and the bearing outer ring, and balls are arranged in a pocket of the retainer. One side end face of the full-effect sealing energy-saving mute bearing is provided with a single-layer rubber contact type sealing structure.

The technical key points are as follows:

and a labyrinth seal structure is arranged on the other end face of the full-effect sealed energy-saving mute bearing.

The inlet of the labyrinth seal structure is provided with an inlet reverse seal structure.

The outlet of the labyrinth seal structure is provided with an outlet reverse seal structure.

The bearing inner ring is fixed on the supporting shaft.

The inner ring sealing lip of the single-layer contact type sealing ring is arranged in the groove of the bearing inner ring.

The retainer is made of engineering plastics.

The labyrinth seal structure comprises a labyrinth seal channel formed by the outer seal ring and the inner seal ring which are buckled with each other.

The inlet reverse sealing structure is V-shaped, and the opening faces to the inlet of the labyrinth seal.

The reverse sealing structure of the outlet is V-shaped, one extends to reversely block the inlet of the labyrinth sealing structure, and the other reversely blocks a connecting port at the labyrinth sealing structure and the retainer.

The outer seal ring comprises an outer seal ring annular part of an integrated structure, and an outer seal ring inner ring flanging and an outer seal ring outer ring flanging which are bent at two sides.

The outer sealing ring is fixedly connected with the bearing inner ring.

The inner sealing ring comprises an inner sealing ring annular part of an integrated structure, and an inner sealing ring inner ring flanging and an inner sealing ring outer ring flanging which are bent at two sides.

The inner sealing ring is fixedly clamped with the bearing outer ring.

The elastic middle sealing ring comprises a middle sealing ring annular part, a middle sealing ring outer ring sealing lip and a middle sealing ring inner ring extension part, wherein the middle sealing ring annular part and the middle sealing ring outer ring sealing lip are of an integral structure, and the two sides of the middle sealing ring outer ring sealing lip and the two sides of the middle sealing ring inner ring.

The middle sealing ring is positioned between the outer sealing ring and the inner sealing ring and is fixedly connected with the inner sealing ring.

The sealing lip of the outer ring of the middle sealing ring extends towards the inlet of the labyrinth sealing structure to form an inlet reverse sealing structure.

The extension part of the inner ring of the middle sealing ring extends to the outlet of the labyrinth sealing structure to form an outlet reverse sealing structure.

The V-shaped angle of the inlet reverse sealing structure is 45-60 degrees.

An angle S formed between one branch and the other branch of the outlet reverse sealing structure and the two radial sides of the bearing inner ring is 55-60 degrees, and an angle T is 55-60 degrees.

The bearing seat has an outward-expanded shoulder, the sealing cover is arranged at the shoulder and fixed on the supporting shaft, and a gap is reserved between the sealing cover and the shoulder.

The inner side of the middle hole of the sealing cover is integrally provided with a sealing cover bearing inner ring annular rib which corresponds to the position of the bearing inner ring.

The shoulder has an outward expansion angle P of 3-5 degrees.

The advantages are that:

the engineering plastic retainer has low noise, self-lubricating function and smooth operation.

The bearing is not easy to rust after being galvanized and blackened.

The sealing lip has more perfect structure, can not be lifted, can not enter water and can not leak oil.

The bearing is provided with a labyrinth seal structure sealing element, the manufacturing cost is low, the assembly is simple, the labor is saved, and the external seal of the carrier roller is needed. First confined space, second confined space and third confined space are outside reverse barb setting, can prevent that air, water and the impurity in the outside from getting into the bearing, have improved lubricating property and anti-pollution performance.

A plurality of sealing elements outside the bearing are eliminated, the bearing seat is shallower and shorter, and the bearing support roller bearing capacity is improved.

The bearing seat and the bearing assembly are integrated and simplified, the total weight of the carrier roller is reduced, the inertia is reduced, and the energy consumption is greatly reduced.

The installation time is simple, equipment and personnel are reduced, and the enterprise operation cost is reduced.

The bearing seat assembly does not need to be added with lubricating grease, secondary pollution gaps are reduced,

the wide-temperature operation is carried out at the temperature of-45 ℃ to 150 ℃, and the wide-temperature operation is suitable for the operation of various conveying machinery working conditions.

Through detection, the roller meets MT821-2006 standard, GB/T10595-2009 belt conveyor standard requirements and MT821-2006 technical conditions for a coal mine belt conveyor roller, the total damping coefficient of the roller is reduced by about 40%, the running noise is reduced by 20-30%, and the lubricating performance is improved by 20%.

Drawings

Fig. 1 is a schematic structural diagram of an original carrier roller.

Fig. 2 is a schematic structural diagram of an original sealed bearing.

Fig. 3 is a schematic view of the structure of the idler of the present invention.

Fig. 4 is an enlarged schematic view of the idler, bearing and bearing housing of the present invention.

Fig. 5 is a schematic view of the structure of the bearing of the present invention.

Fig. 6 is a partially enlarged schematic view of the upper half of fig. 5.

Fig. 7 is a schematic structural view of a bearing housing of the present invention.

Fig. 8 is a schematic structural view of a cage of the bearing of the present invention.

Fig. 9 is a view from direction K in fig. 8.

Fig. 10 is a schematic view showing a half structure of a cage of a bearing according to the present invention.

Fig. 11 is a sectional view a-a in fig. 10.

Fig. 12 is a sectional view B-B in fig. 10.

FIG. 13 is an enlarged partial view of the labyrinth seal.

The bearing comprises a bearing seat 1, a carrier roller 2, a full-effect sealing energy-saving mute bearing 3, a labyrinth sealing structure 4, a contact sealing lip 5, a bearing inner ring 3-1, a bearing outer ring 3-2, a retainer 3-3, balls 3-4, a roller path 3-5, an outer sealing ring 4-1, a middle sealing ring 4-2, an inner sealing ring 4-3, an outer sealing ring annular part 4-1-1, an outer sealing ring inner ring flanging 4-1-2, an outer sealing ring outer ring flanging 4-1-3, a middle sealing ring annular part 4-2-1, a middle sealing ring outer ring sealing lip 4-2-2, a middle sealing ring inner ring extension part 4-2-3, an inner sealing ring annular part 4-3-1, an inner sealing ring inner ring flanging 4-3-2, an inner sealing ring outer ring flanging 4-3-3, The sealing structure comprises an outlet reverse sealing structure 6, a zinc coating 7, a single-layer rubber contact type sealing structure 8, a sealing cover 9, a bearing outer ring first groove 10, a framework 8-1, a single-layer contact type sealing ring 8-2, a wrapping sealing lip 11, an inlet reverse sealing structure 12, a first sealing space 13, a second sealing space 14, a third sealing space 15, a bearing outer ring second groove 16, a bearing inner ring groove 17, a sealing cover reinforcing rib 18, a sealing cover bearing inner ring annular rib 19, a shoulder 20, a gap 21, a separating ring 22, an original sealing bearing 23, a retainer ring 24, an outer sealing ring 25, an inner sealing ring 26, an original bearing seat 27, a sealing groove 28 and a supporting shaft 29.

Detailed Description