CN219262991U

CN219262991U - Novel dustproof and waterproof type bearing

Info

Publication number: CN219262991U
Application number: CN202222841182.8U
Authority: CN
Inventors: 马景玉; 宋兴; 廖庆平; 荣超
Original assignee: Tongling Daily Flying Technology Co ltd
Current assignee: Tongling Daily Flying Technology Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-06-27
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a novel dustproof and waterproof bearing, which relates to the technical field of bearings and comprises an outer ring and an inner ring, wherein a plurality of rollers are arranged in a movable gap between an inner annular wall of the inner ring and an outer annular wall of the outer ring, the upper end and the lower end of the inner ring are fixedly connected with sealing rings, annular cavities are arranged on the sealing rings, an annular filter screen is fixedly connected with an inner cavity of each annular cavity, two layers of waterproof and breathable films and a drying layer positioned between the two layers of waterproof and breathable films are arranged below the annular filter screen, and the novel dustproof and waterproof bearing also comprises a centrifugal opening and closing unit. According to the utility model, the waterproof and breathable film and the drying layer are additionally arranged in the bearing, the waterproof and breathable film is used for intercepting water or larger water drops in moisture, the drying layer is used for drying the treated moisture, the drying effect on the moisture can be improved, and the centrifugal opening and closing unit is arranged, so that the moisture can be isolated from entering the bearing when the bearing is not in operation, and the air can conveniently enter the bearing to carry out heat dissipation treatment when the bearing is in operation.

Description

Novel dustproof and waterproof type bearing

Technical Field

The utility model relates to the technical field of bearings, in particular to a novel dustproof and waterproof bearing.

Background

The bearing is an important part in modern mechanical equipment, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the motion process and ensuring the rotation precision, is widely applied to motor and automobile manufacturing industries, the inner ring of the bearing and a rotating shaft are generally assembled through transition or interference, the inner ring can be driven to rotate at high speed through high-speed rotation of the rotating shaft, and a roller in the bearing moves in a movable gap between the inner ring and the outer ring to reduce friction.

The existing bearing adopts an annular shielding plate to seal a roller movable gap between an outer ring and an inner ring, dust can be effectively prevented from entering the bearing, but the shielding plate influences heat dissipation of the bearing, and according to the problem, chinese patent document with the authority of CN211145129U discloses a high-temperature-resistant bearing at a high rotating speed, which discloses a dustproof mechanism, the dustproof mechanism comprises a filter screen, a frame, a buckling groove, a frame groove, a buckle and the like, the bearing is enabled to have a dustproof function under the condition of ensuring good heat dissipation, but the bearing has some defects, such as the filter screen cannot well play a role of preventing water and moisture, external water or moisture can enter the bearing through a filter screen hole, the moisture content of lubricating oil in the bearing is increased, oil oxidation is accelerated, oil emulsification is enabled, the use performance of the oil is seriously affected, corrosion and rust of the bearing are easily caused when water or moisture is accumulated in the bearing, and the service life of the bearing is reduced.

Disclosure of Invention

An object of the application is to provide a novel dustproof and waterproof formula bearing, add waterproof ventilated membrane and dry layer inside the bearing, utilize waterproof ventilated membrane to hold back great drop of water or moisture in, and utilize dry layer to dry the moisture after to handling, can improve the drying effect to the moisture, and set up the centrifugation unit that opens and shuts, during non-working, can realize the shielding of arc sunshade to annular filter screen through reset spring's elasticity effect, isolated moisture gets into inside the bearing, the during operation drives the effect of centrifugal force that produces when the sealing ring carries out high-speed rotation through the pivot and makes arc sunshade remove, in the annular filter screen exposes the air, make things convenient for the air to get into the inside heat dissipation treatment that carries out of bearing.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a novel dustproof waterproof formula bearing, includes outer lane and the inner circle that coaxial and coplanar set up, be provided with a plurality of roller in the activity space between the inner wall of inner circle and the outer wall of outer lane, and a plurality of the upper and lower side of roller sets up respectively and is used for right the spacing frame of roller carries out spacing, the equal fixedly connected with sealing ring of upper and lower extreme of inner circle, just be equipped with the annular chamber on the sealing ring, the inner chamber fixedly connected with annular filter screen of annular chamber, just the below of annular filter screen is provided with two-layer waterproof ventilated membrane and is located two desiccation layer between the waterproof ventilated membrane, waterproof ventilated membrane annular filter screen with desiccation layer with the activity space is located same vertical space, still includes centrifugal opening and shutting unit, can realize right the shielding seal of annular filter screen, and utilize the inner circle drives the effect that the centrifugal force that produces when the sealing ring is rotatory makes the annular filter screen communicate with each other with the outside air.

Preferably, the centrifugal opening and closing unit comprises a plurality of arc-shaped fixing blocks fixedly connected with the sealing ring in a circumference manner and arc-shaped sliding blocks arranged on the sealing ring in a sliding manner, wherein the arc-shaped fixing blocks are fixedly connected with the arc-shaped sliding blocks through reset springs, positioning columns penetrating through the axes of the reset springs are fixedly connected to the arc-shaped fixing blocks, one ends of the positioning columns penetrate through the arc-shaped sliding blocks and are in sliding connection with the arc-shaped sliding blocks, the outer ends of the arc-shaped sliding blocks are fixedly connected with arc-shaped shielding plates through connecting rods, and the arc-shaped shielding plates cover the annular filter screen.

Preferably, the bottom of arc sunshade fixedly connected with first elasticity is wear-resisting to be filled up, just the lower extreme of first elasticity is wear-resisting to be filled up with the upper end slip conflict of sealing ring.

Preferably, the outer surfaces of the annular filter screen, the sealing ring, the arc-shaped fixing block, the arc-shaped shielding plate, the arc-shaped sliding block, the connecting rod, the positioning column and the reset spring are all provided with corrosion-resistant coatings.

Preferably, the lower end of the sealing ring is fixedly connected with a second elastic wear-resistant gasket, and the lower end of the second elastic wear-resistant gasket is in sliding contact with the upper end of the outer ring.

In summary, the utility model has the technical effects and advantages that:

1. the utility model has reasonable structure, the waterproof and breathable film and the drying layer are additionally arranged in the bearing, the waterproof and breathable film is used for intercepting water or larger water drops in moisture, the drying layer is used for drying the treated moisture, the drying effect on the moisture can be improved, the centrifugal opening and closing unit is arranged, when the bearing is not in operation, the arc-shaped shielding plate can shield the annular filter screen through the elastic action of the reset spring, the moisture is isolated from entering the bearing, when the bearing is in operation, the arc-shaped shielding plate is moved through the action of the centrifugal force generated when the rotating shaft drives the sealing ring to rotate at high speed, the annular filter screen is exposed in the air, and the air is convenient to enter the bearing for heat dissipation treatment;

2. according to the bearing, the first elastic wear-resistant pad and the second elastic wear-resistant pad are arranged, so that the sealing performance of the bearing is improved, and moisture is prevented from entering the bearing through gaps among the components.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a split structure of the present utility model;

FIG. 3 is a schematic view of the centrifugal switch unit in FIG. 2 according to the present utility model;

FIG. 4 is a schematic cross-sectional elevation view of the seal ring of FIG. 2 in accordance with the present utility model.

In the figure: 1. an outer ring; 2. an inner ring; 3. a seal ring; 4. an annular filter screen; 5. a centrifugal opening and closing unit; 51. an arc-shaped fixed block; 52. an arc-shaped shielding plate; 53. an arc-shaped sliding block; 54. a connecting rod; 55. positioning columns; 56. a return spring; 6. a waterproof breathable film; 7. an annular cavity; 8. a second resilient wear washer; 9. a limit frame; 10. and (5) drying the layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: the novel dustproof and waterproof bearing shown by referring to figures 1-4 comprises an outer ring 1 and an inner ring 2 which are coaxially arranged on the same plane, a plurality of rollers are arranged in a movable gap between an inner annular wall of the inner ring 2 and an outer annular wall of the outer ring 1, a limiting frame 9 for limiting the rollers is respectively arranged on the upper side and the lower side of the plurality of rollers, a sealing ring 3 is fixedly connected to the upper end and the lower end of the inner ring 2, an annular cavity 7 is arranged on the sealing ring 3, an annular filter screen 4 is fixedly connected to an inner cavity of the annular cavity 7, two layers of waterproof and breathable films 6 and a drying layer 10 positioned between the two layers of waterproof and breathable films 6 are arranged below the annular filter screen 4, the waterproof and breathable films 6, the annular filter screen 4 and the drying layer 10 are positioned in the same vertical space, a centrifugal opening and closing unit 5 is also included, shielding and sealing of the annular filter screen 4 can be realized, the sealed annular filter screen 4 is communicated with the outside air by utilizing the centrifugal force generated when the inner ring 2 drives the sealing ring 3 to rotate, the bearing is arranged on a rotating shaft which rotates at high speed during working, when the rotating shaft does not rotate at high speed, the centrifugal opening and closing unit 5 shields the annular filter screen 4, moisture can be prevented from entering the bearing to influence the service performance of oil products, when the rotating shaft works, in order to facilitate the heat dissipation of the rotating shaft, the centrifugal opening and closing unit 5 arranged on the sealing ring 3 can be driven to rotate at high speed by the high speed, the sealed annular filter screen 4 is communicated with the outside air by the centrifugal force, at the moment, the outside air can enter the bearing through the annular filter screen 4, the waterproof and breathable film 6 positioned outside, the drying layer 10 and the waterproof and breathable film 6 positioned inside in sequence, the annular filter screen 4 plays a role in filtering dust, the waterproof and breathable film 6 located outside is used for intercepting water or larger water drops in the moisture, the drying layer 10 is used for drying the moisture passing through the waterproof and breathable film 6 located outside, the drying effect on the moisture can be improved, the inside of the bearing is radiated by using dry gas, meanwhile, the moisture in the lubricating oil agent is not increased, the oil performance is prevented from being influenced, the waterproof and breathable film 6 located inside is used for preventing the lubricating oil agent from contacting with the drying layer 10, and the pollution to the drying layer 10 is avoided.

It should be noted that the desiccant layer 10 may be a desiccant layer filled with a granular desiccant, and the waterproof and breathable membrane 6 located on the outside may be arranged to avoid deliquescence caused by excessive water absorption of the desiccant layer 10.

As a preferred implementation manner in this embodiment, as shown in fig. 2 and fig. 3, the centrifugal opening and closing unit 5 includes a plurality of arc fixing blocks 51 fixedly connected to the sealing ring 3 along a circumference and arc sliding blocks 53 slidably disposed on the sealing ring 3, the arc fixing blocks 51 are fixedly connected to the arc sliding blocks 53 through a reset spring 56, a positioning column 55 penetrating through the axis of the reset spring 56 is fixedly connected to the arc fixing blocks 51, one end of the positioning column 55 penetrates through the arc sliding blocks 53 and is slidably connected to the arc sliding blocks 53, the outer end of the arc sliding blocks 53 is fixedly connected to the arc shielding plates 52 through a connecting rod 54, the arc shielding plates 52 cover the annular filter 4, when the rotating shaft drives the sealing ring 3 to rotate at a high height, the arc sliding blocks 53 move along the positioning column 55 due to centrifugal action, the arc sliding blocks 53 move close to the arc shielding plates 51 through the connecting rod 54, and finally the outer end of the arc shielding plates 52 are in contact with the inner wall of the arc fixing blocks 51, the arc shielding plates 52 cannot cover the annular filter 4, and moisture can be prevented from entering the annular filter screen through the reset spring bearing 52 when the rotating shaft stops, and the annular filter screen is prevented from entering the annular filter screen through the reset spring bearing 53.

In this embodiment, the bottom of the arc-shaped shielding plate 52 is fixedly connected with the first elastic wear-resistant pad, and the lower end of the first elastic wear-resistant pad is in sliding contact with the upper end of the sealing ring 3, so that a good sealing effect can be achieved, and moisture is prevented from entering the bearing through the gap between the arc-shaped sliding block 53 and the sealing ring 3.

In this embodiment, the outer surfaces of the annular filter screen 4, the sealing ring 3, the arc-shaped fixing block 51, the arc-shaped shielding plate 52, the arc-shaped sliding block 53, the connecting rod 54, the positioning column 55 and the reset spring 56 are all provided with corrosion-resistant coatings, so that the service lives of the components can be prolonged, and the ZS-711 inorganic corrosion-resistant coating can be selected, and has good wear resistance and acid and alkali corrosion resistance.

As a preferred implementation manner in this embodiment, as shown in fig. 4, the lower end of the sealing ring 3 is fixedly connected with the second elastic wear-resistant gasket 8, and the lower end of the second elastic wear-resistant gasket 8 is in sliding contact with the upper end of the outer ring 1, so that the second elastic wear-resistant gasket 8 has a good sealing effect, and moisture is prevented from entering the bearing from the gap between the sealing ring 3 and the outer ring 1.

The working principle of the utility model is as follows: when the rotating shaft works, in order to facilitate heat dissipation, the rotating shaft can be rotated at a high speed to drive the centrifugal opening and closing unit 5 arranged on the sealing ring 3 to rotate at a high speed, the shielded annular filter screen 4 is communicated with external air through the action of the centrifugal force, at the moment, the external air can enter the bearing through the annular filter screen 4 and sequentially passes through the annular filter screen 4, the waterproof and breathable membrane 6 positioned at the outside, the drying layer 10 and the waterproof and breathable membrane 6 positioned at the inside, the annular filter screen 4 plays a role of filtering dust, the waterproof and breathable membrane 6 positioned at the outside plays a role of intercepting larger water drops in water or moisture, the drying layer 10 is used for drying the moisture passing through the waterproof and breathable membrane 6 positioned at the outside, the heat dissipation is carried out inside the bearing by utilizing the dried air, meanwhile, the increase of moisture in the lubricating oil agent is not caused, the performance of oil products is prevented from being influenced, the waterproof and breathable film 6 positioned inside is arranged to prevent lubricating oil from contacting the drying layer 10, so that pollution to the drying layer 10 is avoided, when the rotating shaft drives the sealing ring 3 to rotate at high height, the arc-shaped sliding block 53 moves along the positioning column 55 to compress the reset spring 56 because of the centrifugal effect, the arc-shaped sliding block 53 moves to drive the arc-shaped shielding plate 52 to move close to the arc-shaped fixed block 51 through the connecting rod 54, the outer end of the arc-shaped shielding plate 52 finally contacts with the inner wall of the arc-shaped fixed block 51, at the moment, the arc-shaped shielding plate 52 cannot shield the annular filter screen 4, at the moment, the annular filter screen 4 is communicated with the outside air, heat can be dissipated to the bearing, when the rotating shaft stops rotating, the arc-shaped sliding block 53 drives the arc-shaped shielding plate 52 to reset to shield the annular filter screen 4 through the elastic force of the reset spring 56, moisture is prevented from entering the bearing interior.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a novel dustproof waterproof formula bearing, includes outer lane (1) and inner circle (2) that coaxial and coplanar set up, be provided with a plurality of roller in the activity space between the inner ring wall of inner circle (2) and the outer ring wall of outer lane (1), and a plurality of the upper and lower side of roller sets up respectively and is used for right spacing frame (9) are carried out to the roller, its characterized in that: the utility model discloses a waterproof and breathable inner ring structure, including inner circle (2), ring (3) and inner ring (4), the upper and lower end of inner circle (2) is all fixedly connected with sealing ring (3), just be equipped with annular chamber (7) inner chamber fixedly connected with annular filter screen (4), just the below of annular filter screen (4) is provided with two-layer waterproof ventilated membrane (6) and is located two desiccation layer (10) between waterproof ventilated membrane (6), waterproof ventilated membrane (6) annular filter screen (4) with desiccation layer (10) with the activity space is located same vertical space, still includes centrifugal opening and shutting unit (5), can realize right the shielding seal of annular filter screen (4), and utilize inner circle (2) drive centrifugal force that produces when sealing ring (3) are rotatory makes the annular filter screen (4) that are sheltered from communicate with each other with the outside air.

2. The novel dustproof and waterproof bearing according to claim 1, wherein: the centrifugal opening and closing unit (5) comprises a plurality of arc-shaped fixing blocks (51) which are fixedly connected with the sealing ring (3) in a circumference manner and arc-shaped sliding blocks (53) which are arranged on the sealing ring (3) in a sliding manner, wherein the arc-shaped fixing blocks (51) are fixedly connected with the arc-shaped sliding blocks (53) through reset springs (56), positioning columns (55) which penetrate through the axes of the reset springs (56) are fixedly connected to the arc-shaped fixing blocks (51), one ends of the positioning columns (55) penetrate through the arc-shaped sliding blocks (53) and are in sliding connection with the arc-shaped sliding blocks (53), the outer ends of the arc-shaped sliding blocks (53) are fixedly connected with the arc-shaped sliding blocks (52) through connecting rods (54), and the arc-shaped sliding blocks (52) cover the annular filter screen (4).

3. The novel dustproof and waterproof bearing according to claim 2, wherein: the bottom of the arc-shaped shielding plate (52) is fixedly connected with a first elastic wear-resistant pad, and the lower end of the first elastic wear-resistant pad is in sliding contact with the upper end of the sealing ring (3).

4. The novel dustproof and waterproof bearing according to claim 2, wherein: the outer surfaces of the annular filter screen (4), the sealing ring (3), the arc-shaped fixing block (51), the arc-shaped shielding plate (52), the arc-shaped sliding block (53), the connecting rod (54), the positioning column (55) and the reset spring (56) are all provided with corrosion-resistant coatings.

5. A novel dustproof and waterproof bearing according to any one of claims 1 to 3, characterized in that: the lower end of the sealing ring (3) is fixedly connected with a second elastic wear-resistant gasket (8), and the lower end of the second elastic wear-resistant gasket (8) is in sliding contact with the upper end of the outer ring (1).