Waterproof and dustproof bearing suitable for conveyor carrier roller

Abstract

The waterproof and dustproof bearing comprises an inner ring, an outer ring, two retainers, a plurality of balls and a plurality of rivets, the balls are sequentially located between the two retainers, the two retainers and the balls are fixed through the rivets, and the inner ring and the outer ring are fixed through the rivets. A rolling structure composed of the two retainers and the balls is located between the inner ring and the outer ring, the rolling structure is rotationally connected with the inner ring and the outer ring, a first sealing structure is arranged on one side between the inner ring and the outer ring, and a second sealing structure is arranged on the other side between the inner ring and the outer ring. The rolling structure is located between the first sealing structure and the second sealing structure, and the problem that in the using process of a carrier roller bearing on an existing conveyor, water vapor, dust, chippings and silt easily enter the bearing is solved.

Description

Technical Field

[0001] The utility model belongs to the field of conveyor roller bearings and relates to a waterproof and dustproof bearing suitable for conveyor rollers. Background Art

[0002] Roller bearings include open roller bearings and sealed roller bearings. Open roller bearings are the most common type of roller bearings. Open bearings are also called flat bearings, which means that the bearings themselves are not sealed. Before installing the open roller bearings, lubricating grease is added to the inside of the roller bearings according to the actual situation. The sealed roller bearings add a sealing cover on both sides of the bearing to achieve the purpose of sealing the cage, balls and lubricating oil. Open roller bearings have certain price advantages over sealed roller bearings in terms of cost, but open roller bearings have worse performance than sealed roller bearings. After a period of use, they are prone to ore debris, water vapor, etc., which leads to the consumption of lubricating oil, which in turn affects the service life of the bearings and ultimately affects the service life of the rollers.

[0003] In order to protect the bearings, the two sides of the rollers are recessed so that one end of the roller bearing is located outside. Although this arrangement can reduce the contact between the bearings and water vapor and debris to a certain extent, it also makes it difficult to remove and replace the bearings after they are damaged. Therefore, when the roller bearings are damaged, the entire roller needs to be replaced, which leads to high costs. In addition, the existing rollers are generally used in mines, ores, and factories with a lot of dust. During the transportation process, there are also washed ores and stones carrying a lot of mud and water vapor. These impurities are easy to enter the interior of the roller bearings. The water vapor, mud and dust that enter cause the lubricating oil to be consumed, and it is also easy to cause the ball and the retaining frame to be stuck, which further damages the entire roller bearing. Therefore, in order to solve the above-mentioned technical problems, the technical solution of the present application is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a waterproof and dustproof bearing suitable for conveyor rollers, thereby solving the above-mentioned technical problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A waterproof and dustproof bearing suitable for a conveyor roller comprises an inner ring, an outer ring, two retaining frames, a plurality of balls, and a plurality of rivets. The plurality of balls are sequentially arranged between the two retaining frames. The two retaining frames and the plurality of balls are fixed by the plurality of rivets. A rolling structure composed of the two retaining frames and the plurality of balls is arranged between the inner ring and the outer ring. The rolling structure is rotatably connected to the inner ring and the outer ring respectively. A first sealing structure is arranged on one side between the inner ring and the outer ring, a second sealing structure is arranged on the other side between the inner ring and the outer ring, and the rolling structure is arranged between the first sealing structure and the second sealing structure.

[0007] The working principle of the utility model is as follows: the application improves the existing open roller bearing by setting a first sealing structure on one side of the bearing, the first sealing structure is located on the side of the bearing that fits the roller, and setting a second sealing structure on the other side of the bearing, the second sealing structure is located on the outside of the roller, the second sealing structure has a stronger sealing effect than the first sealing structure, so that both sides of the bearing can achieve the same sealing protection, while reducing the cost required for preparing the second sealing structure on both sides of the bearing, and wrapping the rolling structure inside through the first sealing structure and the second sealing structure, thereby preventing external water vapor, mud, and dust from entering the rolling structure, thereby preventing the lubricating oil between the rolling structures from being consumed, and also preventing the ball and the retaining frame from being stuck, thereby also preventing the entire roller bearing from being completely damaged.

[0008] Furthermore: the first sealing structure includes a first annular groove arranged on one side of the inner wall of the outer ring, a second annular groove arranged on the outer wall of the inner ring, and a first sealing assembly, the inner ring of the first sealing assembly abuts against the second annular groove, and the outer ring of the first sealing assembly abuts against the first annular groove.

[0009] Furthermore: the first sealing assembly includes a first rubber part and a first metal part, both of which are annular parts, the first metal part is embedded in the first rubber part, the upper end surface of the first rubber part is respectively provided with a first isolation groove and a second isolation groove, the second isolation groove abuts against the top of the first annular groove, and the lower end surface of the first rubber part is provided with a third isolation groove, and the third isolation groove abuts against the bottom of the second annular groove.

[0010] Furthermore: the inner ring of the first rubber member is provided with a first extrusion ring, the first extrusion ring is interference fit with the inner wall of the second annular groove, the outer ring of the lower end surface of the first rubber member is provided with a first chamfer, the inner ring of the lower end surface of the first rubber member is provided with a second chamfer, and the second chamfer is close to the third isolation groove.

[0011] Further: the second sealing structure includes a third annular groove, a second sealing assembly, and a third sealing assembly arranged on the other side of the inner wall of the outer ring, the inner ring of the second sealing assembly abuts against the inner ring, the outer ring of the second sealing assembly abuts against the third annular groove, the inner ring of the third sealing assembly abuts against the inner ring, and the second sealing assembly and the third sealing assembly are rotatable and sealedly connected.

[0012] Further: the second sealing assembly includes a second rubber part and a second metal part, both of which are annular parts, the second metal part is embedded in the second rubber part, the upper end surface of the second rubber part is provided with a fourth isolation groove, the lower end surface of the second rubber part is provided with a fifth isolation groove, the fifth isolation groove abuts against the bottom of the third annular groove, the inner ring of the second rubber part is provided with a second extrusion ring, the second extrusion ring is interference fit with the inner ring, the inner ring of the second rubber part is provided with a third chamfer, and the third chamfer is close to the second extrusion ring.

[0013] Further: the third sealing assembly includes a third metal part, the third metal part is an annular part, a fourth annular groove is provided near the edge of the lower end surface of the third metal part, the inner wall of the fourth annular groove abuts the inner ring, the outer wall of the fourth annular groove is rotatably and sealedly connected to the inner ring of the second sealing assembly, a fifth annular groove is provided at the edge of the lower end surface of the third metal part, and the bottom of the fifth annular groove abuts the upper end surface of the second sealing assembly.

[0014] Furthermore, the inner walls and outer walls on both sides of the inner ring and the outer ring are respectively provided with rounded corners.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0016] 1. A waterproof and dustproof bearing suitable for conveyor rollers, which has a stronger sealing effect than the first sealing structure by setting a second sealing structure, so that both sides of the bearing can achieve the same sealing protection, while reducing the cost required to prepare the second sealing structure on both sides of the bearing;

[0017] 2. In the present invention, the first sealing structure and the second sealing structure are sealed layer by layer to prevent water vapor, mud, and dust from entering the interior of the bearing, thereby extending the service life of the bearing and ultimately extending the service life of the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work, including:

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the inner ring in the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the outer ring in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the first sealing component in the utility model;

[0023] Figure 5 It is a structural schematic diagram of the second sealing component in the utility model;

[0024] Figure 6 It is a structural schematic diagram of the third sealing component in the utility model;

[0025] Figure 7-Figure 8 It is a structural schematic diagram of a sample of a roller bearing of the utility model;

[0026] Markings in the figure: 1-inner ring, 2-outer ring, 3-cage, 4-ball, 5-rivet, 6-first annular groove, 7-second annular groove, 8-first rubber part, 9-first metal part, 10-first isolation groove, 11-second isolation groove, 12-third isolation groove, 13-first extrusion ring, 14-first chamfer, 15-second chamfer, 16-third annular groove, 17-second rubber part, 18-second metal part, 19-fourth isolation groove, 20-fifth isolation groove, 21-second extrusion ring, 22-third chamfer, 23-third metal part, 24-fourth annular groove, 25-fifth annular groove, 26-rounded corner. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0029] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0031] Embodiment 1

[0032] The utility model discloses a waterproof and dustproof bearing suitable for conveyor rollers, such as Figure 1-Figure 8 As shown, it includes an inner ring 1, an outer ring 2, two retaining frames 3, a plurality of balls 4, and a plurality of rivets 5. The plurality of balls 4 are sequentially located between the two retaining frames 3. The two retaining frames 3 and the plurality of balls 4 are fixed by the plurality of rivets 5. A rolling structure composed of the two retaining frames 3 and the plurality of balls 4 is located between the inner ring 1 and the outer ring 2. The rolling structure is rotatably connected to the inner ring 1 and the outer ring 2 respectively. A first sealing structure is provided on one side between the inner ring 1 and the outer ring 2, and a second sealing structure is provided on the other side between the inner ring 1 and the outer ring 2. The rolling structure is located between the first sealing structure and the second sealing structure.

[0033] The inner wall and the outer wall on both sides of the inner ring 1 and the outer ring 2 are respectively provided with rounded corners 26 .

[0034] The specific implementation method of this embodiment is as follows: rollers are generally used in mines, ores, and factories with a lot of dust. During the transportation process, there are also washed ores and stones carrying a lot of mud and water vapor. These impurities are easy to enter the interior of the roller bearing. The entering water vapor, mud and dust cause the lubricating oil to be consumed, and it is also easy to cause the ball and the retaining frame to be stuck, thereby completely damaging the entire roller bearing. The existing roller end is set to be recessed, so that one side of the bearing is directly in contact with the inner wall of the roller, but water vapor, mud and dust are still easy to enter, but the other side of the bearing is less affected by water vapor, mud and dust, but the other side of the bearing is directly located outside and is directly impacted by water vapor, mud and dust. Therefore, different sealing structures are required for the two sides of the bearing, so that both sides of the bearing can achieve sealing protection.

[0035] The present application improves the existing open roller bearing by providing a first sealing structure on one side of the bearing, the first sealing structure being located on the side of the bearing that is in contact with the roller, and providing a second sealing structure on the other side of the bearing, the second sealing structure being located on the outside of the roller. The second sealing structure has a stronger sealing effect than the first sealing structure, so that both sides of the bearing can achieve the same sealing protection, while reducing the cost required to prepare the second sealing structure on both sides of the bearing.

[0036] The rolling structure is wrapped inside by the first sealing structure and the second sealing structure, thereby preventing external water vapor, mud, and dust from entering the rolling structure, thereby preventing the lubricating oil between the rolling structures from being consumed, and preventing the balls and the retaining frame from being stuck, thereby preventing the entire roller bearing from being completely damaged.

[0037] Preferably, before installing the first sealing structure and the second sealing structure, the lubricating oil is fully filled into the rolling structure, and then the first sealing structure and the second sealing structure on both sides are respectively installed between the inner ring and the outer ring.

[0038] The inner and outer walls on both sides of the inner and outer rings are provided with rounded corners to facilitate the subsequent transportation and use of the bearings.

[0039] Embodiment 2

[0040] The utility model discloses a waterproof and dustproof bearing suitable for conveyor rollers, such as Figure 1-Figure 4 As shown, the first sealing structure includes a first annular groove 6 arranged on one side of the inner wall of the outer ring 2, a second annular groove 7 arranged on the outer wall of the inner ring 1, and a first sealing assembly, the inner ring of the first sealing assembly abuts against the second annular groove 7, and the outer ring of the first sealing assembly abuts against the first annular groove 6.

[0041] The first sealing assembly includes a first rubber member 8 and a first metal member 9. Both the first rubber member 8 and the first metal member 9 are annular members. The first metal member 9 is embedded in the first rubber member 8. The upper end surface of the first rubber member 8 is provided with a first isolation groove 10 and a second isolation groove 11, respectively. The second isolation groove 11 abuts against the top of the first annular groove 6. The lower end surface of the first rubber member 8 is provided with a third isolation groove 12, which abuts against the bottom of the second annular groove 7.

[0042] The inner ring of the first rubber member 8 is provided with a first extrusion ring 13, and the first extrusion ring 13 is interference fit with the inner wall of the second annular groove 7. The outer ring of the lower end surface of the first rubber member 8 is provided with a first chamfer 14, and the inner ring of the lower end surface of the first rubber member 8 is provided with a second chamfer 15, and the second chamfer 15 is close to the third isolation groove 12.

[0043] The specific implementation of this embodiment is as follows: the first metal part is embedded in the first rubber part to enhance the strength of the first rubber part and prevent the first rubber part from being easily damaged by gravel, slag, and mud during use.

[0044] When some mud, water vapor and dust enter the outside of the first rubber member, the first isolation groove provided on the first rubber member is convenient for collecting the mud, water vapor and dust, thereby preventing the mud, water vapor and dust from directly entering the bearing.

[0045] The second isolation groove provided on the first rubber member is used to collect the mud, water vapor and dust entering between the first rubber member and the first annular groove, thereby preventing the mud, water vapor and dust from entering the bearing through the gap between the first rubber member and the first annular groove.

[0046] The first extrusion ring provided on the first rubber member is used to prevent mud, water vapor and dust from entering the interior of the bearing through the gap between the first rubber member and the inner ring.

[0047] The third isolation groove provided on the first rubber member is used to prevent the mud, water vapor and dust which enter between the first rubber member and the inner ring from entering the interior of the bearing again.

[0048] The first chamfer and the second chamfer provided on the first rubber member are for facilitating the installation of the first rubber member and the first annular groove and the second annular groove.

[0049] Embodiment 3

[0050] The utility model discloses a waterproof and dustproof bearing suitable for conveyor rollers, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, the second sealing structure includes a third annular groove 16, a second sealing assembly, and a third sealing assembly arranged on the other side of the inner wall of the outer ring. The inner ring of the second sealing assembly abuts against the inner ring 1, the outer ring of the second sealing assembly abuts against the third annular groove 16, the inner ring of the third sealing assembly abuts against the inner ring 1, and the second sealing assembly and the third sealing assembly are rotatably and sealedly connected.

[0051] The second sealing assembly includes a second rubber member 17 and a second metal member 18. Both the second rubber member 17 and the second metal member 18 are annular members. The second metal member 18 is embedded in the second rubber member 17. The upper end surface of the second rubber member 17 is provided with a fourth isolation groove 19. The lower end surface of the second rubber member 17 is provided with a fifth isolation groove 20. The fifth isolation groove 20 abuts against the bottom of the third annular groove 16. The inner ring of the second rubber member 17 is provided with a second extrusion ring 21. The second extrusion ring 21 is interference fit with the inner ring 1. The inner ring of the second rubber member 17 is provided with a third chamfer 22. The third chamfer 22 is close to the second extrusion ring 21.

[0052] The third sealing assembly includes a third metal part 23, which is an annular part. A fourth annular groove 24 is provided near the edge of the lower end surface of the third metal part 23, the inner wall of the fourth annular groove 24 abuts against the inner ring 1, and the outer wall of the fourth annular groove 24 is rotatably and sealingly connected to the inner ring of the second sealing assembly. A fifth annular groove 25 is provided at the edge of the lower end surface of the third metal part 23, and the bottom of the fifth annular groove 25 abuts against the upper end surface of the second sealing assembly.

[0053] The specific implementation of this embodiment is as follows: the second metal piece is embedded in the second rubber piece to enhance the strength of the second rubber piece and prevent the second rubber piece from being easily damaged by gravel, slag, and mud during use.

[0054] The fourth isolation groove provided on the second rubber part is to prevent mud, water vapor and dust from entering the joint between the second rubber part and the inner ring. At the same time, the fourth isolation groove is sealed by the fifth annular groove on the third metal part, so that the fourth isolation groove is located inside the fifth annular groove, and at the same time, mud, water vapor and dust are reduced from entering the fourth isolation groove.

[0055] The second extrusion ring arranged on the second rubber part is used to seal the fitting between the second rubber part and the inner ring to prevent mud, water vapor and dust from entering the interior of the bearing. At the same time, the second extrusion ring fits against the outer wall of the fourth annular groove on the third metal part to achieve a rotating and sealed connection between the second rubber part and the third metal part.

[0056] The fifth isolation groove provided on the second rubber member is to prevent mud, water vapor and dust from entering the interior of the bearing from the connection between the second rubber member and the third annular groove.

[0057] The third chamfer provided on the second rubber member facilitates installation of the second rubber member and the inner ring.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made by any technician familiar with the field within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A waterproof and dustproof bearing suitable for conveyor rollers, comprising an inner ring (1), an outer ring (2), two retaining frames (3), a plurality of balls (4), and a plurality of rivets (5), wherein the plurality of balls (4) are sequentially located between the two retaining frames (3), the two retaining frames (3) and the plurality of balls (4) are fixed by the plurality of rivets (5), a rolling structure composed of the two retaining frames (3) and the plurality of balls (4) is located between the inner ring (1) and the outer ring (2), and the rolling structure is rotatably connected to the inner ring (1) and the outer ring (2), respectively, and characterized in that: A first sealing structure is provided on one side between the inner ring (1) and the outer ring (2), a second sealing structure is provided on the other side between the inner ring (1) and the outer ring (2), and the rolling structure is located between the first sealing structure and the second sealing structure; The first sealing structure comprises a first annular groove (6) provided on one side of the inner wall of the outer ring (2), a second annular groove (7) provided on the outer wall of the inner ring (1), and a first sealing component, wherein the inner ring of the first sealing component abuts against the second annular groove (7), and the outer ring of the first sealing component abuts against the first annular groove (6); The first sealing component comprises a first rubber member (8) and a first metal member (9), the first rubber member (8) and the first metal member (9) are both annular members, the first metal member (9) is embedded in the first rubber member (8), the upper end surface of the first rubber member (8) is respectively provided with a first isolation groove (10) and a second isolation groove (11), the second isolation groove (11) is in contact with the top of the first annular groove (6), the lower end surface of the first rubber member (8) is provided with a third isolation groove (12), the third isolation groove (12) is in contact with the bottom of the second annular groove (7); The second sealing structure comprises a third annular groove (16) arranged on the other side of the inner wall of the outer ring, a second sealing assembly, and a third sealing assembly, wherein the inner ring of the second sealing assembly abuts against the inner ring (1), the outer ring of the second sealing assembly abuts against the third annular groove (16), the inner ring of the third sealing assembly abuts against the inner ring (1), and the second sealing assembly and the third sealing assembly are rotatably and sealingly connected; The second sealing assembly comprises a second rubber member (17) and a second metal member (18). The second rubber member (17) and the second metal member (18) are both annular members. The second metal member (18) is embedded in the second rubber member (17). The upper end surface of the second rubber member (17) is provided with a fourth isolation groove (19). The lower end surface of the second rubber member (17) is provided with a fifth isolation groove (20). The fifth isolation groove (20) abuts against the bottom of the third annular groove (16). The inner ring of the second rubber member (17) is provided with a second extrusion ring (21). The second extrusion ring (21) is interference-fitted with the inner ring (1). The inner ring of the second rubber member (17) is provided with a third chamfer (22). The third chamfer (22) is close to the second extrusion ring (21).

2. The waterproof and dustproof bearing suitable for conveyor rollers according to claim 1 is characterized in that: The inner ring of the first rubber member (8) is provided with a first extrusion ring (13), the first extrusion ring (13) is interference-fitted with the inner wall of the second annular groove (7), the outer ring of the lower end surface of the first rubber member (8) is provided with a first chamfer (14), the inner ring of the lower end surface of the first rubber member (8) is provided with a second chamfer (15), and the second chamfer (15) is close to the third isolation groove (12).

3. The waterproof and dustproof bearing suitable for conveyor rollers according to claim 1 is characterized in that: The third sealing assembly comprises a third metal part (23), which is an annular part. A fourth annular groove (24) is provided near the edge of the lower end surface of the third metal part (23), the inner wall of the fourth annular groove (24) abuts against the inner ring (1), the outer wall of the fourth annular groove (24) is rotatably and sealingly connected to the inner ring of the second sealing assembly, and a fifth annular groove (25) is provided at the edge of the lower end surface of the third metal part (23), the bottom of the fifth annular groove (25) abuts against the upper end surface of the second sealing assembly.

4. The waterproof and dustproof bearing suitable for conveyor rollers according to claim 1, characterized in that: The inner walls and outer walls on both sides of the inner ring (1) and the outer ring (2) are respectively provided with rounded corners (26).

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