Deep groove ball bearing for agricultural machinery

Abstract

This utility model discloses a deep groove ball bearing for agricultural machinery, including an inner bearing ring, an outer bearing ring, and a sealing assembly. The outer bearing ring is fitted outside the inner bearing ring, and a set of rolling balls is installed between the outer and inner bearing rings. A common seal is installed on the non-exposed end face of the bearing. The sealing assembly is installed on the exposed end face of the bearing and includes an inner seal, an outer seal, and a pressure plate. The outer seal is laterally stacked and connected to the outside of the inner seal, and the pressure plate is fixedly connected to the outer bearing ring, fixing the inner and outer seals. This utility model features a specially designed sealing assembly structure for the exposed end of the bearing. The sealing assembly adopts a multi-step, multi-sealing layer design, which has excellent anti-mud and water intrusion sealing characteristics, and can well meet the needs of agricultural machinery equipment in harsh environments. The sealing assembly of this utility model is easy to install, disassemble, and replace, which facilitates maintenance after damage and saves maintenance costs for customers.

Description

Technical Field

[0001] This utility model relates to the field of bearing product technology, and more specifically, to a deep groove ball bearing for agricultural machinery. Background Technology

[0002] Bearings are crucial transmission components in modern equipment, and deep groove ball bearings are a significant category, widely used in agricultural machinery. Agricultural machinery operates in harsh environments, with bearings often exposed to mud and water. User feedback indicates that conventional deep groove ball bearings suffer from poor sealing at the exposed ends, leading to easy damage and failure of the seals. This results in a shorter bearing lifespan, impacting the normal operation of agricultural machinery. Furthermore, conventional deep groove ball bearings require complete replacement after seal failure, which is time-consuming, labor-intensive, and incurs substantial maintenance costs. Therefore, companies are considering designing a deep groove ball bearing specifically for agricultural machinery to meet market demand. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a deep groove ball bearing for agricultural machinery. This utility model has a specially designed sealing combination structure for the exposed end of the bearing. The sealing combination adopts a multi-step, multi-sealing layer design, which has excellent sealing characteristics against mud and water intrusion. It can well meet the needs of agricultural machinery equipment in harsh environments. The sealing combination of this utility model is easy to install, disassemble and replace, which not only facilitates maintenance after damage, but also saves maintenance costs for customers.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A deep groove ball bearing for agricultural machinery includes an inner bearing ring, an outer bearing ring, and a sealing assembly. The outer bearing ring is fitted onto the outside of the inner bearing ring. A set of rolling balls is installed between the outer bearing ring and the inner bearing ring. A common seal is installed on the non-exposed end face of the bearing. The sealing assembly is installed on the exposed end face of the bearing. The sealing assembly includes an inner seal, an outer seal, and a pressure plate. The outer seal is laterally stacked and connected to the outside of the inner seal. The pressure plate is fixedly connected to the outer bearing ring, and the inner and outer seals are fixed by the pressure plate.

[0006] Furthermore, the inner sealing element includes a first skeleton and a first sealing body. The first skeleton is made of metal material, and the first sealing body covers and connects to the outside of the first skeleton. The first sealing body has a lip at the outer diameter end of the first skeleton, and a first horizontal sealing lip and a first vertical sealing lip at the inner diameter end of the first skeleton. A first step is provided on the outer wall of the inner ring of the bearing. The first vertical sealing lip abuts against the step surface of the first step, and the first horizontal sealing lip abuts against the side wall surface of the first step. A third step is provided on the inner wall of the outer ring of the bearing. The first sealing body is adapted to be installed in the space within the third step, and the lip abuts against the inner wall of the third step.

[0007] Furthermore, the outer seal includes a second skeleton and a second sealing body. The second skeleton is made of metal material, and the second sealing body covers the inner diameter end of the second skeleton. The second sealing body forms a second vertical sealing lip at the inner diameter end of the second skeleton. A second step is provided on the outer wall of the inner ring of the bearing, and the second vertical sealing lip abuts against the step surface of the second step.

[0008] Furthermore, the second vertical sealing lip adopts a comb-shaped lip body.

[0009] Furthermore, the diameter of the second step is smaller than that of the first step, and the inner seal also has a second transverse sealing lip formed at the inner diameter end of the first skeleton, the second transverse sealing lip abutting against the side of the outer seal.

[0010] Furthermore, a flange protrudes from one side of the pressure plate body, and a sealing mounting cavity is formed on the inner side of the flange. The outer seal is fitted into the sealing mounting cavity, and the second skeleton of the outer seal has an elbow at its outer diameter end, which is flush with the flange.

[0011] Furthermore, the pressure plate body is installed with its flange end facing the inner seal, and the sealing and pressing are achieved by the flange abutting against the inner seal.

[0012] Furthermore, the inner wall of the outer ring of the bearing is provided with a fourth step, and the pressure plate body is adapted to be installed inside the fourth step.

[0013] Furthermore, the pressure plate body has a plurality of screw holes evenly distributed along the same circumference, and countersunk screws are fitted into the screw holes. The pressure plate body is fixed to the outer ring of the bearing by the countersunk screws.

[0014] The beneficial effects of this utility model are:

[0015] This utility model features a specially designed sealing assembly structure for the exposed end of the bearing. The sealing assembly adopts a multi-step, multi-sealing layer design, which has excellent sealing characteristics against mud and water intrusion and can well meet the needs of agricultural machinery equipment in harsh environments. The sealing assembly consists of two sealing components, inner and outer, and adopts an unconventional overlapping and pressing installation design. The sealing assembly is easy to install, disassemble and replace, which not only facilitates maintenance after damage but also saves customers maintenance costs. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the structure of a deep groove ball bearing for agricultural machinery in this embodiment;

[0017] Figure 2 For this embodiment Figure 1 Enlarged view of point A in the image;

[0018] Figure 3 This is a three-dimensional structural diagram of the pressure plate body in this embodiment.

[0019] Reference numerals: Inner ring of bearing 1, First step 11, Second step 12, Outer ring of bearing 2, Third step 21, Fourth step 22, Roller ball 3, Ordinary seal 4, Sealing assembly 5, Inner seal 51, First skeleton 511, First sealing body 512, Lip 5121, First transverse sealing lip 513, Second transverse sealing lip 514, First vertical sealing lip 515, Outer seal 52, Second skeleton 521, Elbow 5211, Second sealing body 522, Second vertical sealing lip 523, Pressure plate body 53, Flange 531, Sealing mounting cavity 532, Screw hole 533, Countersunk screw 534. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-3The deep groove ball bearing for agricultural machinery shown includes an inner ring 1, an outer ring 2, and a sealing assembly 5. The outer ring 2 is fitted onto the outside of the inner ring 1, and a set of rolling balls 3 are installed between the outer ring 2 and the inner ring 1. This structure forms the main body of the deep groove ball bearing. Generally, when bearings are used on agricultural machinery, both sides are not exposed to the external environment. Therefore, the sealing requirements for the non-exposed and exposed end faces are significantly different. To reduce the cost of the bearing, this invention installs a common seal 4 on the non-exposed end face of the bearing. The common seal 4 is a conventional sealing choice, and its structure will not be described in detail here. For the exposed end face in harsh muddy environments, this invention designs and installs a sealing assembly 5 to solve the problem. The sealing assembly 5 includes an inner seal 51, an outer seal 52, and a pressure seal 53. The disc body 53 and the outer seal 52 are laterally stacked and connected to the outside of the inner seal 51. The pressure plate body 53 is fixedly connected to the outer ring 2 of the bearing. The inner seal 51 and the outer seal 52 are fixed by the pressure plate body 53. The combination of the inner seal 51 and the outer seal 52 can form a multi-layer sealing effect to meet the sealing requirements of the bearing product on the exposed end face. At the same time, the inner seal 51 and the outer seal 52 are fixed by the pressure plate body 53. After the pressure plate body 53 is removed, the inner seal 51 and the outer seal 52 can be easily removed and replaced. In this way, when the seal is damaged, it is not necessary to replace the entire bearing product. Only the corresponding sealing module needs to be replaced. This design not only facilitates the maintenance after the bearing seal is damaged, but also saves maintenance costs for customers (statistics on agricultural machinery equipment have found that the probability of seal damage is higher than that of bearing damage itself).

[0022] like Figure 1 and Figure 2 As shown, the inner seal 51 includes a first skeleton 511 and a first sealing body 512. The first skeleton 511 is made of metal, and the first sealing body 512 is attached to the outside of the first skeleton 511 (the first sealing body 512 is made of rubber and is installed by adhesive bonding). The first sealing body 512 has a lip 5121 formed at the outer diameter end of the first skeleton 511, and a first transverse sealing lip 513 and a first vertical sealing lip 515 formed at the inner diameter end of the first skeleton 511. A first step 11 is provided on the outer wall of the bearing inner ring 1. Since the bearing inner ring 1 rotates during use, ... The sealing of the inner ring 1 of this bearing is the most important. The first step 11 of the inner ring 1 is designed to fit the inner seal 51. The first vertical sealing lip 515 abuts against the step surface of the first step 11, and the first horizontal sealing lip 513 abuts against the side wall surface of the first step 11, forming two seals on the step, one horizontal and one vertical. A third step 21 is provided on the inner wall of the outer ring 2 of the bearing. The opening of the third step 21 forms an inner hole space. The first sealing body 512 is fitted into the inner space of the third step 21, and the lip 5121 abuts against the inner wall of the third step 21 to form a seal in the direction of the inner wall of the outer ring 2 of the bearing.

[0023] like Figure 1 and Figure 2 As shown, the outer seal 52 includes a second skeleton 521 and a second sealing body 522. The second skeleton 521 is made of metal. The second sealing body 522 covers the inner diameter end of the second skeleton 521 and forms a second vertical sealing lip 523 at the inner diameter end of the second skeleton 521. A second step 12 is provided on the outer wall of the bearing inner ring 1. The second step 12 is specially designed for the outer seal 52. After the outer seal 52 is installed, the second vertical sealing lip 523 abuts against the step surface of the second step 12. The diameter of the second step 12 is smaller than that of the first step 11, that is, the first step 11 is higher than the second step 12. This creates a stepped sealing effect. The second vertical sealing lip 523 adopts a comb-shaped lip body, which is characterized by having multiple strip-shaped lips, thus forming a better surface seal. The inner sealing element 51 also forms a second horizontal sealing lip 514 at the inner diameter end of the first skeleton 511. After the outer sealing element 52 is installed, the second horizontal sealing lip 514 abuts against the side of the outer sealing element 52, forming a lateral seal between the two sealing elements. Under the above design, the combination of the inner sealing element 51 and the outer sealing element 52 forms a stepped multi-layer sealing effect to prevent mud and water from seeping in. This design can meet the usage requirements of bearing products in harsh mud and water environments.

[0024] like Figure 2 and Figure 3As shown, a flange 531 protrudes from one side of the pressure plate body 53. A sealing mounting cavity 532 is formed inside the flange 531. The outer seal 52 is fitted into the sealing mounting cavity 532. The second skeleton 521 of the outer seal 52 has an elbow 5211 at its outer diameter end. The elbow 5211 is flush with the flange 531. The outer seal 52 is snapped onto the pressure plate body 53 and is installed integrally with the pressure plate body 53. The inner diameter end of the outer seal 52 is the inner diameter end of the component. At the radial position, the pressure plate body 53 is installed with its flange 531 facing the inner seal 51. Sealing and tightening are achieved by the flange 531 abutting against the inner seal 51. To facilitate the installation and fixation of the pressure plate body 53, a fourth step 22 is provided on the inner wall of the bearing outer ring 2. This fourth step 22 forms an inner space for the installation of the pressure plate body 53. The pressure plate body 53 is fitted into the inner side of the fourth step 22. Several screw holes 533 are evenly distributed along the same circumference on the surface of the pressure plate body 53. The pressure plate body 53 is fitted with countersunk screws 534. The countersunk screws 534 are fixed to the outer ring 2 of the bearing. There are no less than 3 countersunk screws 534. The pressure plate body 53 is fixed with screws for easy disassembly. When installing the sealing assembly 5 of this utility model, the inner seal 51 is installed first, and then the outer seal 52 is installed into the pressure plate body 53. The pressure plate body 53 is then aligned with the inner seal 51 and installed. The pressure plate body 53 is fixed with screws, and at the same time, the pressure plate body 53 presses and fixes the inner seal 51. When replacing the sealing assembly 5 of this utility model, the pressure plate body 53 is removed first. Since the outer seal 52 is installed into the pressure plate body 53, the outer seal 52 is pulled out after the pressure plate body 53 is removed. The outer seal 52 can be separated by pressing the outer seal 52 directly. After the inner seal 51 loses its top pressure fixing force, it can be removed from the inside by slightly hooking it. If the appearance of the inner seal 51 is good, the inner seal 51 can also be replaced without disassembly.

[0025] The bearing product of the present invention is only installed on one side end face. If there is an installation environment with both ends exposed, the ordinary seal 4 at the other end can be replaced with the sealing assembly 5 (with corresponding processing modifications to the bearing inner ring 1 and bearing outer ring 2).

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A deep groove ball bearing for agricultural machinery, characterized in that, The bearing includes an inner ring (1), an outer ring (2), and a sealing assembly (5). The outer ring (2) is fitted onto the outside of the inner ring (1). A set of roller balls (3) is installed between the outer ring (2) and the inner ring (1). A common seal (4) is installed on the non-exposed end face of the bearing. The sealing assembly (5) is installed on the exposed end face of the bearing. The sealing assembly (5) includes an inner seal (51), an outer seal (52), and a pressure plate (53). The outer seal (52) is laterally overlapped and connected to the outside of the inner seal (51). The pressure plate (53) is fixedly connected to the outer ring (2) of the bearing. The inner seal (51) and the outer seal (52) are fixed by the pressure plate (53).

2. The deep groove ball bearing for agricultural machinery according to claim 1, characterized in that, The inner sealing element (51) includes a first skeleton (511) and a first sealing body (512). The first skeleton (511) is made of metal material. The first sealing body (512) covers and is connected to the outside of the first skeleton (511). The first sealing body (512) forms a lip (5121) at the outer diameter end of the first skeleton (511). The first sealing body (512) forms a first horizontal sealing lip (513) and a first vertical sealing lip (515) at the inner diameter end of the first skeleton (511). A first step (11) is provided on the outer wall of the inner ring (1) of the bearing. The first vertical sealing lip (515) abuts against the step surface of the first step (11). The first horizontal sealing lip (513) abuts against the side wall surface of the first step (11). A third step (21) is provided on the inner wall of the outer ring (2) of the bearing. The first sealing body (512) is adapted to be installed in the space inside the third step (21). The lip (5121) abuts against the inner wall of the third step (21).

3. The deep groove ball bearing for agricultural machinery according to claim 2, characterized in that, The outer seal (52) includes a second skeleton (521) and a second sealing body (522). The second skeleton (521) is made of metal material. The second sealing body (522) covers the inner diameter end of the second skeleton (521). The second sealing body (522) forms a second vertical sealing lip (523) at the inner diameter end of the second skeleton (521). A second step (12) is provided on the outer wall of the bearing inner ring (1). The second vertical sealing lip (523) abuts against the step surface of the second step (12).

4. The deep groove ball bearing for agricultural machinery according to claim 3, characterized in that, The second vertical sealing lip (523) adopts a comb-shaped lip body.

5. The deep groove ball bearing for agricultural machinery according to claim 3, characterized in that, The diameter of the second step (12) is smaller than that of the first step (11). The inner seal (51) also has a second transverse lip (514) formed at the inner diameter end of the first skeleton (511). The second transverse lip (514) abuts against the side of the outer seal (52).

6. The deep groove ball bearing for agricultural machinery according to claim 1, characterized in that, The pressure plate body (53) has a flange (531) protruding from one side of the plate surface. A sealing installation cavity (532) is formed inside the flange (531). The outer seal (52) is fitted into the sealing installation cavity (532). The second skeleton (521) of the outer seal (52) has an elbow (5211) at the outer diameter end. The elbow (5211) is flush with the flange (531).

7. The deep groove ball bearing for agricultural machinery according to claim 6, characterized in that, The pressure plate body (53) is installed with its flange (531) facing the inner seal (51), and the sealing and pressing are achieved by the flange (531) abutting against the inner seal (51).

8. The deep groove ball bearing for agricultural machinery according to claim 1, characterized in that, The inner wall of the outer ring (2) of the bearing is provided with a fourth step (22), and the pressure plate (53) is adapted to be installed inside the fourth step (22).

9. The deep groove ball bearing for agricultural machinery according to claim 1, characterized in that, The pressure plate body (53) has a number of screw holes (533) evenly distributed along the same circumference on the plate surface. The screw holes (533) are fitted with countersunk screws (534). The pressure plate body (53) is fixed to the outer ring (2) of the bearing by the countersunk screws (534).

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