阅读说明：本技术 一种链条用多层组合密封外置滚轮结构 (Multilayer combined sealing external roller structure for chain ) 是由 巫新锋 于 2020-12-01 设计创作，主要内容包括：本发明公开了一种多层组合密封免润滑滚轮结构,包括滚轮,其特征在于,所述滚轮的内侧壁上开设有滚轮内孔,所述滚轮内孔内安装有轴承,所述轴承的内圈套设在轴承座上,所述轴承座的一端与滚轮的一端密封连接,所述滚轮的另一端密封连接有防尘盖并将轴承座的另一端罩设在滚轮内。本发明的滚轮结构免润滑,轴向无串动现象,滚轮径向跳动小,传动平稳性提高,密封性能好。(The invention discloses a multilayer combined sealing lubrication-free roller structure which comprises a roller and is characterized in that a roller inner hole is formed in the inner side wall of the roller, a bearing is installed in the roller inner hole, the inner ring of the bearing is sleeved on a bearing seat, one end of the bearing seat is connected with one end of the roller in a sealing mode, the other end of the roller is connected with a dust cover in a sealing mode, and the other end of the bearing seat is covered in the roller. The roller structure of the invention has the advantages of no lubrication, no axial movement phenomenon, small radial runout of the roller, improved transmission stability and good sealing performance.)

1. The utility model provides a lubricated gyro wheel structure is exempted from in multilayer composite seal, includes gyro wheel (1), its characterized in that, gyro wheel hole (2) have been seted up on the inside wall of gyro wheel (1), install bearing (3) in gyro wheel hole (2), the inner circle cover of bearing (3) is established on bearing frame (4), the one end of bearing frame (4) and the one end sealing connection of gyro wheel (1), the other end sealing connection of gyro wheel (1) has shield (5) and establishes the other end cover of bearing frame (4) in gyro wheel (1).

2. The roller structure of claim 1, wherein two labyrinth sealing rings (6) are tightly arranged between one end of the bearing (3) far away from the dust cover (5) and the roller inner hole (2), two limit blocks (7) and (8) are tightly arranged at one end of the bearing (3) close to the dust cover (5), one side of one limit block (7) is embedded in the roller (1), and the other limit block (8) is embedded in the bearing seat (4).

3. The multilayer combined sealing and lubrication-free roller structure as claimed in claim 2, wherein a first O-ring (9) is arranged between the dust cover (5) and the roller (1) in a sealing manner.

4. The multi-layer combined sealing lubrication-free roller structure according to claim 3, wherein the inner hole of the bearing (3) and the outer diameter of the bearing seat (4) and the outer diameter of the bearing (3) and the inner hole (2) of the roller are in interference fit.

5. The multilayer combined sealing and lubrication-free roller structure as claimed in claim 4, wherein the bearing seat (4) is sleeved on a shaft, a second O-ring (10) is arranged between the bearing seat (4) and the shaft, and the bearing seat (4) and the shaft are kept static.

6. The structure of the multilayer combined seal lubrication-free roller according to claim 5, wherein the roller inner hole (2) is pre-filled with lubricating grease.

Technical Field

The invention relates to the technical field of mechanical transmission, in particular to a multi-layer combined sealing lubrication-free roller structure.

Background

There are two conventional ways of mounting the roller to the shaft:

the first traditional mode is as follows: the roller is sleeved on the shaft in an empty way (as shown in figure 1);

the traditional mode two: the rolling wheel is internally provided with a rolling bearing, and the bearing is directly sleeved on the shaft (as shown in figure 2).

However, these two conventional approaches have some drawbacks, such as:

the first traditional mode is as follows: the lubricating property between the roller and the pin shaft is poor, and the roller and the pin shaft are easy to wear; dust, slurry and the like easily enter between the rolling shafts to cause the roller to be blocked, and the axial movement is large;

the traditional mode two: after the rolling bearing is installed, the problem that the rolling bearing is improved in comparison with the traditional mode is solved, however, the inner ring of the bearing is sleeved on the shaft in a hollow mode, the roller has large jumping, dust, slurry and the like easily enter the space between the bearing and the shaft to cause the roller to be blocked, the lubricating property is poor, and the axial movement is large.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a multi-layer combined sealing lubrication-free roller structure which is free of lubrication, free of axial movement, small in radial runout of a roller, improved in transmission stability and good in sealing performance.

The technical scheme adopted by the invention is as follows:

the utility model provides a lubricated gyro wheel structure is exempted from in multilayer composite seal, includes the gyro wheel, its characterized in that, the gyro wheel hole has been seted up on the inside wall of gyro wheel, install the bearing in the gyro wheel hole, the inner circle cover of bearing is established on the bearing frame, the one end of bearing frame and the one end sealing connection of gyro wheel, the other end sealing connection of gyro wheel has the shield and establishes the other end cover of bearing frame in the gyro wheel.

Further, a lubricated gyro wheel structure is exempted from in multilayer composite seal, a serial communication port, the bearing keep away from the one end of shield with the tight pad is equipped with two labyrinth sealing rings between the gyro wheel hole, the one end that the bearing is close to the shield closely is equipped with two stoppers, one of them one side embedding of stopper in the gyro wheel, another the stopper embedding in the bearing frame.

Further, the multilayer combined sealing lubrication-free roller structure is characterized in that a first O-shaped ring is arranged between the dustproof cover and the roller in a sealing mode.

Further, a lubricated gyro wheel structure is exempted from in multilayer combination seal, its characterized in that, bearing hole and bearing frame external diameter, bearing external diameter all adopt interference fit with the gyro wheel hole.

Further, a lubricated gyro wheel structure is exempted from in multilayer combination seal, its characterized in that, the bearing frame suit is epaxial, be equipped with second O type circle between bearing frame and the axle, bearing frame and axle remain static, eliminate radial clearance among the traditional mounting means, make the roller drive more steady.

Further, the roller structure is characterized in that the roller inner hole is prefilled with lubricating grease.

The invention has the advantages that:

1. the labyrinth seal ring can bear axial pressure and can seal a grease lubrication bearing exposed to an extreme pollution environment, so that the axial movement of the roller is avoided;

2. introducing a bearing seat structure, and making the bearing seat into a closed type to prevent dust and granular bulk materials from entering the roller;

3. the bearing inner hole is in interference fit with the outer diameter of the bearing seat, and the outer diameter of the bearing is in interference fit with the inner hole of the roller, the bearing seat and the shaft are kept static, and the radial clearance in the traditional installation mode is eliminated, so that the roller transmission is more stable;

4. the roller is filled with lubricating grease in advance, and due to the multi-layer combined sealing structure, the lubricating grease in the roller cannot run off, the bearing is sufficiently lubricated, the lubricating-free effect in the using process is achieved, the service life of the roller is greatly prolonged, and the maintenance cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a first conventional method.

Fig. 2 is a schematic structural diagram of a conventional system two.

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

In the figure: gyro wheel 1, gyro wheel hole 2, bearing 3, bearing frame 4, shield 5, labyrinth sealing ring 6, stopper 7, stopper 8, first O type circle 9, second O type circle 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1.

As shown in fig. 3, a lubricated gyro wheel structure is exempted from in multilayer combination seal, including gyro wheel 1, seted up gyro wheel hole 2 on the inside wall of gyro wheel 1, installed bearing 3 in the gyro wheel hole 2, the inner circle cover of bearing 3 is established on bearing frame 4, the one end of bearing frame 4 and the one end contact of gyro wheel 1 are connected, the other end sealing connection of gyro wheel 1 has shield 5 and establishes the other end cover of bearing frame 4 in gyro wheel 1.

Further, bearing 3 keeps away from between the one end of shield 5 and the gyro wheel hole 2 tight pad be equipped with two labyrinth sealing rings 6, and bearing 3 is close to the one end of shield 5 and closely is equipped with two stopper 7, 8, and in one of them stopper 7's one side embedding gyro wheel 1, in another stopper 8 embedding bearing frame 4.

Further, a first O-shaped ring 9 is arranged between the dustproof cover 5 and the roller 1 in a sealing mode.

Further, the inner hole of the bearing 3 and the outer diameter of the bearing seat 4, and the outer diameter of the bearing 3 and the inner hole 2 of the roller wheel all adopt interference fit.

Further, the bearing seat 4 is sleeved on the shaft, the second O-shaped ring 10 is arranged between the bearing seat 4 and the shaft, the bearing seat 4 and the shaft are kept static, radial gaps in the traditional installation mode are eliminated, and roller transmission is stable.

Further, the roller inner hole 2 is pre-filled with lubricating grease.

When the invention is used, the bearing seat 4, the shaft and the inner ring of the bearing 3 keep relatively static, and the roller 1, the dust cover 5 and the outer ring of the bearing 3 keep relatively static; one end of the bearing seat 4 is in contact connection with one end of the roller 1, and the two labyrinth seal rings 6 are combined, so that dust and granular bulk materials can be effectively prevented from entering the roller from two ends of one end of the roller 1, and the dust cover 5 can be used for effectively preventing dust and granular bulk materials from entering the roller from two ends of the other end of the roller 1. Compared with two traditional structures shown in the figures 1 and 2, the structure has the advantages of wide application range, stable performance and long service life.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.