A double-raceway durable rolling bearing

Abstract

The utility model relates to the field of bearings, and discloses a double-raceway durable rolling bearing, comprising an outer shaft ring, an inner shaft ring is arranged through the middle of the outer shaft ring, a clamping pad is arranged at the connection position between the outer shaft ring and the front side of the inner shaft ring, and a sealing groove is provided on the front side of the outer shaft ring. In the utility model, through the provided clamping pad and sealing lip, a bow end is cleverly provided at one end of the clamping pad, and a concave groove is specially provided on the outer side of the sealing groove, so that the bow end can be properly embedded in the concave groove, ensuring that the bow end can be tightly fitted with the inner shaft ring when the bearing is operating, thereby enhancing the sealing effect. In addition, three sealing lips are fixedly connected to the inner side of the clamping pad of the bearing, and the three sealing lips are respectively located on one side of the clamping pad and are tightly attached to the outer side of the inner shaft ring, ensuring that the sealing lip can effectively seal the front side of the sealed bearing during the operation of the bearing, preventing foreign matter from entering the bearing during use, thereby improving the service life and durability of the bearing.

Description

Technical Field

[0001] The utility model relates to the field of bearings, in particular to a double-raceway durable rolling bearing. Background Art

[0002] Land preparation machinery, such as shield machines, agricultural seeders, land preparation machinery, etc., all use various types of bearings. Bearings are an important part of mechanical equipment. They can reduce the friction between the moving parts of the equipment, support the rotating shaft, enable it to rotate freely, and ensure the precise movement of the equipment and reduce energy loss. In land preparation machinery, the role of bearings is particularly critical because these machines often need to withstand high loads, high precision and high reliability requirements.

[0003] According to the authorized patent publication number: CN114151441A, a rolling bearing disclosed includes a first inner ring and a second inner ring, a first outer ring is provided on the outer side of the first inner ring, a first bearing frame is provided between the first inner ring and the first outer ring, and a plurality of first rollers are provided in the first bearing frame; a second outer ring is provided on the outer side of the second inner ring, a second bearing frame is provided between the second inner ring and the second outer ring, and a plurality of second rollers are provided in the second bearing frame; a plurality of first arc grooves are provided at intervals on the right end face of the second inner ring along the circumferential direction of the first inner ring, and a first arc plate is provided on the left end face of the second inner ring extending leftwards, The first arc plate is connected in the first arc groove by sliding along the left-right direction; the first inner ring is provided with a first radial adjustment component, and the second inner ring is provided with a second radial adjustment component; the rolling bearing can not only change the distance between the first inner ring and the second inner ring according to the axial length of different rotating shafts, but also can be used on rotating shafts with different diameters. However, the rolling bearing still has shortcomings. Land preparation machinery usually works outdoors and is exposed to dust, soil, grass clippings and other environments. These foreign particles can easily enter the bearing and cause wear and failure. Therefore, it is necessary to design a double-raceway durable rolling bearing with good sealing. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a double-raceway durable rolling bearing, which solves the problem that foreign matter can easily enter due to the poor sealing performance of the current bearing.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a double-raceway durable rolling bearing, comprising an outer shaft ring, an inner shaft ring is arranged through the middle of the outer shaft ring, a snap-fit ​​pad is arranged at the connection position between the outer shaft ring and the front side of the inner shaft ring, a sealing groove is opened on the front side of the outer shaft ring, one end of the snap-fit ​​pad is fitted on the outer side of the inner shaft ring, and the other end of the snap-fit ​​pad is arranged inside the sealing groove, one end of the snap-fit ​​pad located in the sealing groove is fixedly connected with a bow end, the bow end is embedded in a concave groove, the concave groove is arranged on the outer side of the sealing groove, three sealing lips are fixedly connected to the inner side of the snap-fit ​​pad, and the three sealing lips are all fitted on the outer side of the inner shaft ring on the side away from the snap-fit ​​pad.

[0006] Preferably, a first raceway and a second raceway are respectively provided between the upper and lower sides of the outer shaft ring and the inner shaft ring.

[0007] Preferably, two rolling bodies are arranged on the front and rear sides of the first and second raceways.

[0008] Preferably, a retainer is sleeved on the outer side of the middle part of the rolling body.

[0009] Preferably, retaining spring grooves are provided at both upper and lower ends of the front side of the outer shaft ring.

[0010] Preferably, the rolling elements on the upper and lower sides are in angular contact with the outer shaft ring and the inner shaft ring.

[0011] Beneficial Effects

[0012] The utility model provides a double-raceway durable rolling bearing. Compared with the prior art, it has the following beneficial effects:

[0013] 1. In the utility model, through the provision of the snap-fit ​​pad and the sealing lip, one end of the snap-fit ​​pad is cleverly provided with a bowed end, and a concave groove is specially provided on the outer side of the sealing groove, so that the bowed end can be properly embedded in the concave groove, ensuring that the bowed end can be closely fitted with the inner shaft ring when the bearing is in operation, thereby enhancing the sealing effect. In addition, three sealing lips are fixedly connected to the inner side of the snap-fit ​​pad of the bearing, and the three sealing lips are respectively located on one side of the snap-fit ​​pad and closely fitted with the outer side of the inner shaft ring, ensuring that the sealing lip can effectively seal the front side of the sealed bearing during the operation of the bearing, preventing foreign matter from entering the bearing during use, and improving the service life and durability of the bearing;

[0014] 2. In the utility model, by setting up raceway 1 and raceway 2, since raceway 1 and raceway 2 are respectively located on the upper and lower sides of the outer shaft ring and the inner shaft ring, and two rolling elements are arranged on the front and rear sides inside each raceway, this design significantly increases the rolling contact area of ​​the bearing, thereby improving the bearing's load-bearing capacity. The angular contact between the rolling elements on the upper and lower sides and the outer shaft ring and the inner shaft ring provides higher contact rigidity, so that the bearing can better maintain its shape when bearing load, reduce deformation, and thus improve the stability of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a double-raceway durable rolling bearing proposed by the utility model;

[0016] Figure 2 It is a side sectional view of a double-raceway durable rolling bearing proposed by the utility model;

[0017] Figure 3 This is a front view of a double-raceway durable rolling bearing proposed by the utility model;

[0018] Figure 4 A double-raceway durable rolling bearing proposed by the utility model Figure 2 A is an enlarged view of the middle image.

[0019] Legend:

[0020] 1. Outer shaft ring; 2. Inner shaft ring; 3. Rolling element; 4. Cage; 5. Raceway 1; 6. Raceway 2; 7. Circlip groove; 8. Sealing groove; 9. Sealing lip; 10. Snap-fit ​​pad; 11. Bow end; 12. Concave groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model provides two technical solutions, which specifically include the following embodiments:

[0023] Embodiment 1:

[0024] A double-raceway durable rolling bearing comprises an outer shaft ring 1, an inner shaft ring 2 is arranged through the middle of the outer shaft ring 1, a snap-fitting pad 10 is arranged at the connection position between the outer shaft ring 1 and the front side of the inner shaft ring 2, a sealing groove 8 is opened on the front side of the outer shaft ring 1, one end of the snap-fitting pad 10 is fitted and arranged on the outer side of the inner shaft ring 2, and the other end of the snap-fitting pad 10 is arranged inside the sealing groove 8, and a bowed end 11 is fixedly connected to one end of the snap-fitting pad 10 located in the sealing groove 8, and the shape and position design of the bowed end 11 enable it to better adapt to the shape of the inner shaft ring 2, thereby providing a tighter seal when the bearing is running, helping to prevent lubricating oil leakage and external foreign matter from entering the bearing, thereby improving the durability and performance of the bearing, the bowed end 11 is embedded in a concave groove 12, and the concave groove 12 is arranged on the outer side of the sealing groove 8, and three sealing lips 9 are fixedly connected to the inner side of the snap-fitting pad 10, and the sealing lip 9 is made of rubber, and the three sealing lips 9 are all fitted and arranged on the outer side of the inner shaft ring 2 on the side away from the snap-fitting pad 10.

[0025] When working, one end of the snap-fit ​​pad 10 is cleverly provided with a bowed end 11, and a recessed groove 12 is specially opened on the outer side of the sealing groove 8, so that the bowed end 11 can be properly embedded in the recessed groove 12, ensuring that when the bearing is operating, the bowed end 11 can fit tightly against the inner shaft ring 2, thereby enhancing the sealing effect. In addition, three sealing lips 9 are fixedly connected to the inner side of the snap-fit ​​pad 10 of the bearing. The three sealing lips 9 are respectively located on one side of the snap-fit ​​pad 10 and are tightly attached to the outer side of the inner shaft ring 2, ensuring that during the operation of the bearing, the sealing lips 9 can effectively seal the front side of the sealed bearing to prevent foreign matter from entering the bearing during use, thereby improving the service life and durability of the bearing.

[0026] Embodiment 2:

[0027] On the basis of the first embodiment, a raceway 1 5 and a raceway 2 6 are respectively provided between the upper and lower sides of the outer shaft ring 1 and the inner shaft ring 2. Two rolling bodies 3 are arranged on the front and rear sides of the raceway 1 5 and the raceway 2 6. A retainer 4 is sleeved on the outer side of the middle of the rolling body 3. The specific model of the retainer 4 is nylon PA66. The function of the retainer 4 is to keep the rolling body 3 in the correct position. A retaining spring groove 7 is provided at both the upper and lower ends of the front side of the outer shaft ring 1. The retaining spring groove 7 is used to engage with the retaining spring. After the retaining spring is installed, it can prevent the bearing from displacement. The rolling bodies 3 on the upper and lower sides are connected with the outer shaft ring 1 and The inner shaft ring 2 has angular contact. Raceway 1 5 and raceway 2 6 are located on the upper and lower sides of the outer shaft ring 1 and the inner shaft ring 2 respectively, and two rolling elements 3 are arranged on the front and rear sides of each raceway. The rolling elements 3 are specifically spherical balls. This design significantly increases the rolling contact area of ​​the bearing, thereby improving the bearing's load-bearing capacity. The angular contact between the rolling elements 3 on the upper and lower sides and the outer shaft ring 1 and the inner shaft ring 2 provides higher contact rigidity, so that the bearing can better maintain its shape when bearing load, reduce deformation, and thus improve the stability of the bearing.

[0028] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application should be included in the protection scope of the present application.

Claims

1. A double-raceway durable rolling bearing, comprising an outer shaft ring (1), characterized in that: An inner shaft ring (2) is arranged through the middle of the outer shaft ring (1); a snap-fit ​​pad (10) is arranged at the front connecting position between the outer shaft ring (1) and the inner shaft ring (2); a sealing groove (8) is opened on the front side of the outer shaft ring (1); one end of the snap-fit ​​pad (10) is arranged on the outer side of the inner shaft ring (2); the other end of the snap-fit ​​pad (10) is arranged inside the sealing groove (8); one end of the snap-fit ​​pad (10) located in the sealing groove (8) is fixedly connected to a bow end (11); the bow end (11) is embedded in a concave groove (12); the concave groove (12) is arranged on the outer side of the sealing groove (8); three sealing lips (9) are fixedly connected to the inner side of the snap-fit ​​pad (10); the three sealing lips (9) are all arranged on the outer side of the inner shaft ring (2) on the side away from the snap-fit ​​pad (10).

2. A double-raceway durable rolling bearing according to claim 1, characterized in that: A first raceway (5) and a second raceway (6) are respectively provided between the upper and lower sides of the outer shaft ring (1) and the inner shaft ring (2).

3. A double-raceway durable rolling bearing according to claim 2, characterized in that: Two rolling bodies (3) are arranged on both the front and rear sides of the first raceway (5) and the second raceway (6).

4. A double-raceway durable rolling bearing according to claim 3, characterized in that: A retainer (4) is sleeved on the outer side of the middle part of the rolling body (3).

5. The double-raceway durable rolling bearing according to claim 1, characterized in that: The upper and lower ends of the front side of the outer shaft ring (1) are both provided with retaining ring grooves (7).

6. The double-raceway durable rolling bearing according to claim 3, characterized in that: The contact modes of the rolling bodies (3) on the upper and lower sides with the outer shaft ring (1) and the inner shaft ring (2) are both angular contact.

Images