A sealing structure for support roller bearing box

Abstract

The utility model discloses a support roller bearing box sealing structure, which relates to the technical field of sealing structures. An axial hole is provided on the bearing box, and a support roller is inserted into the axial hole. There is a gap between the support roller located in the axial hole and the bearing box. The utility model is characterized in that: the sealing structure is annular, and is sleeved on the outer periphery of the support roller. The sealing structure includes a fixing part and a sealing part. A fixing piece is provided on the fixing part, and the fixing piece is used to fix the fixing part on the support roller. The sealing part extends in a trumpet-shaped manner from the side of the fixing part close to the bearing box toward the bearing box. When the extended end of the sealing part abuts against the bearing box, the sealing part expands outward and deforms to be close to the bearing box, so as to block and seal the gap between the support roller and the bearing box. The utility model can seal the gap between the support roller and the bearing box, prevent rolling oil or foreign matter from entering the axial hole of the bearing box, and prevent the contact surface of the support roller bearing box from falling off, thereby reducing production costs.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing structures, in particular to a sealing structure of a support roller bearing box. Background Art

[0002] The existing support roller bearing box has a poor seal, which causes rolling oil or other foreign matter to enter the shaft hole of the bearing box, thereby reducing the viscosity of the lubricating oil and causing insufficient lubrication of the support roller. In the case of insufficient lubrication of the support roller, it is necessary to partially extract the lubricating oil and then re-add high-viscosity lubricating oil to adjust the viscosity of the lubricating oil. However, frequent adjustment of the viscosity of the lubricating oil will lead to an increase in production costs and a waste of funds. Insufficient lubrication will also result in the lack of oil film on the contact surface between the support roller and the internal components of the bearing box, resulting in the contact surface falling off, which will also cause an increase in production costs. Utility Model Content

[0003] The utility model aims to provide a support roller bearing box sealing structure, which overcomes the above-mentioned defects and can seal the gap between the support roller and the bearing box.

[0004] To achieve the above objectives, the solution of the utility model is:

[0005] A support roller bearing box sealing structure, wherein an axial hole is provided on the bearing box, and a support roller is inserted into the axial hole. There is a gap between the support roller located in the axial hole and the bearing box. The sealing structure is annular and is sleeved on the outer periphery of the support roller. The sealing structure comprises a fixing portion and a sealing portion. A fixing piece is provided on the fixing portion, and the fixing piece is used to fix the fixing portion on the support roller. The sealing portion spreads and extends in a trumpet shape from a side of the fixing portion close to the bearing box toward the bearing box. When the extended end of the sealing portion abuts against the bearing box, the sealing portion expands and deforms outwards and is pressed against the bearing box to seal the gap between the support roller and the bearing box.

[0006] Furthermore, an inclined plane is provided on the inner side of the sealing portion, and the inclined plane is used to seal in parallel with the bearing box when the sealing portion is deformed and expanded outward.

[0007] Furthermore, the extended end of the sealing portion is in the form of an arc surface, and the inner side of the arc surface is connected to the inclined plane.

[0008] Furthermore, the fixing piece clamps the fixing portion tightly around the outer circumference of the supporting roller.

[0009] Furthermore, the outer surface of the fixing portion is concave to form a groove, and the fixing piece is a clamp, which is embedded in the groove, and the fixing portion is clamped tightly to the outer periphery of the supporting roller through the clamp.

[0010] Furthermore, the thickness of the sealing portion gradually increases from the extending start end to the extending end end, and an inclined wedge surface is formed on the outer side of the sealing portion.

[0011] Furthermore, the fixing portion and the sealing portion are made of rubber material.

[0012] Furthermore, the bearing box is rotatably provided with a pressure cover at the edge of the shaft hole. The pressure cover is embedded in the side of the bearing box facing the sealing part and is flush with this surface. The extended end of the sealing part is tightly attached to the pressure cover, and when the sealing part rotates with the supporting roller, the pressure cover rotates accordingly.

[0013] After adopting the above scheme, the beneficial effects of the utility model are:

[0014] The sealing portion of the sealing component of the utility model extends in a trumpet shape from the fixed portion close to the bearing box side toward the bearing box. When the extended end of the sealing portion abuts against the bearing box, the sealing portion expands and deforms outwards and fits tightly against the bearing box to seal the gap between the support roller and the bearing box, thereby preventing rolling oil or foreign matter from entering the axial hole of the bearing box, maintaining the viscosity of the lubricating oil, reducing the number of times the viscosity of the lubricating oil is adjusted, and allowing an oil film to form on the contact surface between the support roller and the inside of the bearing box to prevent the contact surface from falling off, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is an overall cross-sectional view of the utility model;

[0017] Figure 3 yes Figure 2 A magnified image of point A;

[0018] Figure 4 It is a schematic diagram of the use of the utility model;

[0019] Figure 5 yes Figure 4 A cross-sectional view of

[0020] Figure 6 yes Figure 5 Enlarged view of point B.

[0021] Description of labels:

[0022] 10. Support roller; 20. Bearing box; 21. Shaft hole; 22. Pressure cover; 23. Gap; 30. Sealing structure; 31. Fixing part; 311. Groove; 32. Fixing piece; 321. Clamp; 33. Sealing part; 331. Inclined plane; 332. Arc surface; 333. Wedge surface. DETAILED DESCRIPTION

[0023] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 6 As shown, the utility model provides a support roller 10 bearing box 20 sealing structure 30, the bearing box 20 is provided with an axial hole 21, the support roller 10 is inserted into the axial hole 21, and a gap 23 is provided between the support roller 10 located in the axial hole 21 and the bearing box 20. The sealing structure 30 is annular, and is sleeved on the outer periphery of the support roller 10. The sealing structure 30 includes a fixing part 31 and a sealing part 33. The fixing part 31 is provided with a fixing piece 32, and the fixing piece 32 is used to fix the fixing part 31 on the support roller 10. The sealing part 33 is close to the bearing from the fixing part 31. One side of the box 20 extends in a trumpet shape toward the bearing box 20. When the extended end of the sealing portion 33 abuts against the bearing box 20, the sealing portion 33 expands and deforms outward to fit tightly against the bearing box 20, so as to seal the gap 23 between the support roller 10 and the bearing box 20, thereby preventing rolling oil or foreign matter from entering the axial hole 21 of the bearing box 20, maintaining the viscosity of the lubricating oil, reducing the number of times the viscosity of the lubricating oil is adjusted, and forming an oil film on the contact surface between the support roller 10 and the inner side of the bearing box 20 to prevent the contact surface from falling off, thereby reducing production costs.

[0025] Furthermore, an inclined plane 331 is provided on the inner side of the sealing portion 33, and the inclined plane 331 is used to be parallel to and tightly sealed with the bearing box 20 when the sealing portion 33 is deformed outwardly; the extended end of the sealing portion 33 is an arc surface 332, and the inner side of the arc surface 332 is connected to the inclined plane 331; specifically, the arc surface 332 at the extended end of the sealing portion 33 always maintains a tight state with the bearing box 20 when the sealing portion 33 is deformed outwardly, thereby having a better sealing performance and preventing the sealing portion 33 from being in contact with the bearing box 20 when the sealing portion 33 is deformed outwardly. A gap 23 is generated between the sealing portion 33 and the arc surface 332, and the stress concentration when the sealing portion 33 expands outward is reduced, so that the sealing portion 33 is more likely to expand and deform outward when it abuts against the bearing box 20; and the inner side of the arc surface 332 is connected to the inclined plane 331, and when the sealing portion 33 pushes against the bearing box 20 and gradually expands and deforms outward, the inclined plane 331 gradually becomes parallel to and tightly attached to the side of the bearing box 20 that is abutted, thereby increasing the contact area with the bearing box 20 and the sealing area, so as to obtain a better sealing effect and prevent local aging of the seal.

[0026] Furthermore, the fixing member 32 clamps the fixing portion 31 to the outer periphery of the supporting roller 10, so that when the sealing structure 30 of the utility model is aged, the fixing member 32 can be loosened and removed to replace the sealing structure 30 of the utility model. Specifically, the outer surface of the fixing portion 31 is concave to form a groove 311, and the fixing member 32 is a clamp 321, which is embedded in the groove 311 to prevent the clamp 321 from moving and misaligning. The fixing portion 31 is clamped to the outer periphery of the supporting roller 10 by the clamp 321.

[0027] Specifically, the thickness of the sealing portion 33 gradually increases from the extending start end to the extending end, and an inclined wedge surface 333 is formed on the outer side of the sealing portion 33. The thickness of the sealing portion 33 at the extending start end is small, and the sealing portion 33 is easy to bend when it abuts against the bearing box 20, making it easier for the sealing portion 33 to expand and deform outward, and the external inclined wedge surface 333 can guide the rolling oil or foreign matter outward, and the rolling oil or foreign matter slides toward the initial end of the sealing portion 33 along the inclined wedge surface 333.

[0028] Specifically, the fixing portion 31 and the sealing portion 33 are made of rubber material. The sealing portion 33 made of rubber material is easier to deform and also has elasticity and strong restoring force, so that the extended end of the sealing portion 33 always rests on the bearing box 20, which can better play a sealing effect, and the fixing portion 31 made of rubber material can be more firmly clamped on the support roller 10.

[0029] Furthermore, the bearing box 20 is rotatably provided with a pressure cover 22 at the edge of the shaft hole 21, and the pressure cover 22 is embedded in the side of the bearing box 20 facing the sealing part 33 and is flush with this side. The extended end of the sealing part 33 is tightly attached to the pressure cover 22, and when the sealing part 33 rotates with the support roller 10, the pressure cover 22 rotates accordingly. Specifically, if the extended end of the sealing part 33 directly abuts against the bearing box 20, when the support roller 10 rotates, the extended end of the sealing part 33 and the bearing box 20 rotate relative to each other, so that friction occurs between the extended end of the sealing part 33 and the bearing box 20, thereby causing wear of the extended end of the sealing part 33, reducing the service life of the sealing structure 30 of the utility model. Therefore, the pressure cover 22 rotates with the sealing part 33, which can reduce the friction of the extended end of the sealing part 33, and can also play a sealing role, and increase the service life of the sealing part 33.

[0030] Specifically, the sealing portion 33 and the fixing portion 31 are integrally formed so that the sealing portion 33 is not easily broken when it is deformed and expanded outward.

[0031] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0032] Meanwhile, the directions such as front, back, left, and right involved in this embodiment are only used as a reference for directions and do not represent directions in actual use. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A support roller bearing box sealing structure, wherein the bearing box is provided with an axial hole, the support roller is inserted into the axial hole, and there is a gap between the support roller in the axial hole and the bearing box, characterized in that: The sealing structure is annular and is sleeved on the outer circumference of the support roller. The sealing structure includes a fixed portion and a sealing portion. The fixed portion is provided with a fixing piece, which is used to fix the fixed portion on the support roller. The sealing portion extends in a trumpet shape from the side of the fixed portion close to the bearing box toward the bearing box. When the extended end of the sealing portion abuts against the bearing box, the sealing portion expands outward and deforms to fit tightly against the bearing box to seal the gap between the support roller and the bearing box.

2. A support roller bearing box sealing structure according to claim 1, characterized in that: An inclined plane is arranged on the inner side of the sealing part, and the inclined plane is used for sealing in parallel with the bearing box when the sealing part is deformed outwardly.

3. A support roller bearing box sealing structure as claimed in claim 2, characterized in that: The extended end of the sealing portion is in the form of an arc surface, and the inner side of the arc surface is connected to the inclined plane.

4. A support roller bearing box sealing structure according to claim 1, characterized in that: The fixing piece clamps the fixing portion tightly around the outer circumference of the supporting roller.

5. A support roller bearing box sealing structure as claimed in claim 4, characterized in that: The outer surface of the fixing part is concave to form a groove, and the fixing piece is a clamp, which is embedded in the groove, and the fixing part is clamped tightly on the outer periphery of the supporting roller through the clamp.

6. A support roller bearing box sealing structure according to claim 1, characterized in that: The thickness of the sealing portion gradually increases from the extending start end to the extending end end, and an inclined wedge surface is formed on the outer side of the sealing portion.

7. A support roller bearing box sealing structure according to claim 1, characterized in that: The fixing part and the sealing part are made of rubber material.

8. A support roller bearing box sealing structure according to claim 1, characterized in that: The bearing box is rotatably provided with a pressure cover at the edge of the shaft hole. The pressure cover is embedded in the side of the bearing box facing the sealing part and is flush with this surface. The extended end of the sealing part is tightly attached to the pressure cover, and when the sealing part rotates with the supporting roller, the pressure cover rotates accordingly.

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